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1.
Arch. argent. pediatr ; 118(3): e241-e245, jun. 2020. tab
Artigo em Inglês, Espanhol | LILACS, BINACIS | ID: biblio-1104227

RESUMO

Introducción: El Helicobacter pylori (HP) causa inflamación local en el estómago y una respuesta inmunitaria humoral sistémica. En los estudios que investigaron la asociación entre la infección por HP y el índice de neutrófilos/linfocitos (INL) y el volumen plaquetario medio (VPM) en adultos, no se observó ninguna relación. Hasta donde sabemos, no se hicieron estudios en niños. Nuestro objetivo fue evaluar la asociación entre los valores de INL y VPM y la infección por HP, la clasificación de la gravedad y el estado antes y después del tratamiento.Población y métodos: En el estudio se incluyeron pacientes de 2 a 18 años de edad con dispepsia y sin enfermedades crónicas sometidos a una endoscopía alta. Se hizo una biopsia endoscópica de la mucosa y se determinaron la presencia de HP y la gravedad de la infección según la clasificación de Sídney.Resultados: Se incluyeron en el estudio 153 pacientes con HP y 211 sin HP; la media de edad fue de 13,3 ± 3,4 años y 13,1 ± 3,5 años, respectivamente. No se observaron diferencias estadísticamente significativas entre los pacientes con y sin HP ni tampoco entre los subgrupos de pacientes con HP según la gravedad en relación con el INL y el VPM (p > 0,05).Conclusiones: No se observó una asociación entre los valores de INL y VPM y la infección por HP, la clasificación de la gravedad ni el estado antes y después del tratamiento.


Introduction: HP causes local inflammation in the stomach and a systemic humoral immune response. No relationship was found in adult studies investigating the association between HP infection and neutrophil/lymphocyte ratio (NLR) and mean platelet volume (MPV). To our knowledge, there is no study in children. We aimed to evaluate the association between NLR and MPV values with HP infection, severity classification, and pre- and post-treatment status.Population and Methods: Patients with dyspepsia aged between 2-18 years and without any chronic diseases undergoing gastroduodenoscopy were included in the study. Endoscopic mucosal biopsy was performed, HP presence and infection severity were determined according to Sydney Classification.Results: 153 patients with HP positivity and 211 patients with HP negativity were included in the study, the mean age of them was 13.3 ± 3.4 years and 13.1 ± 3.5 years, respectively. No statistically significant difference was found between patients with HP positive and negative patients and also between severity subgroups of HP positive patients in terms of NLR and MPV (p > 0.05).Conclusions:There was no association between NLR and MPV values with HP infection, severity classification, or pre- and post-treatment status.


Assuntos
Humanos , Masculino , Feminino , Pré-Escolar , Criança , Adolescente , Helicobacter pylori , Infecções por Helicobacter , Biópsia , Linfócitos , Estudos Transversais , Endoscopia , Volume Plaquetário Médio , Neutrófilos
2.
Arch. argent. pediatr ; 118(2): 139-142, abr. 2020. tab, ilus
Artigo em Inglês, Espanhol | LILACS, BINACIS | ID: biblio-1100250

RESUMO

Antecedentes: La púrpura de Henoch-Schönlein (PHS) es una vasculitis sistémica de vasos pequeños. El objetivo fue evaluar el índice de neutrófilos/linfocitos (INL) en sangre y el volumen plaquetario medio (VPM) en la PHS e investigar la relación con el compromiso renal y gastrointestinal.Métodos: Se incluyeron niños con PHS y controles sanos. Se evaluaron concentración de hemoglobina, recuento de leucocitos, recuento de trombocitos, INL, VPM, velocidad de sedimentación globular y proteína C-reactiva.Resultados: El INL fue significativamente mayor en los pacientes con PHS con hemorragia gastrointestinal (p < 0,001). El valor ideal de corte del INL para predecir la hemorragia gastrointestinal fue 2,05, con 93 % de sensibilidad y 62 % de especificidad. El VPM fue significativamente mayor en los pacientes con PHS con compromiso renal (p = 0,027).Conclusiones: El INL en sangre y el VPM podrían ser útiles para identificar el compromiso renal y gastrointestinal en la PHS


Background: Henoch-Schönlein purpura (HSP) is a systemic small-vessel vasculitis that occurs mainly in children. The aim was to evaluate the blood neutrophil-to-lymphocyte ratio (NLR) and mean platelet volume (MPV) in patients with HSP and to investigate the relationship with gastrointestinal and renal involvement.Methods: Children with HSP and healthy individuals as controls were included. Hemoglobin level, white blood cell count, platelet count, NLR, MPV erythrocyte sedimentation rate and C-reactive protein were evaluated.Results: There were 71 HSP children and 74 controls. NLR was significantly higher in HSP patients with gastrointestinal bleeding than without gastrointestinal bleeding (p < 0,001). The optimal cutoff value of NLR for predicting gastrointestinal bleeding was 2.05, with 93 % sensitivity and 62 % specificity. MPV was significantly higher in HSP patients with renal involvement than without renal involvement (p = 0,027).Conclusions:Blood NLR and MPV may be useful markers to identify gastrointestinal and renal involvement in HSP patients.


Assuntos
Humanos , Masculino , Feminino , Pré-Escolar , Criança , Adolescente , Púrpura de Schoenlein-Henoch/sangue , Linfócitos/patologia , Volume Plaquetário Médio , Neutrófilos/patologia , Púrpura de Schoenlein-Henoch/diagnóstico , Estudos Retrospectivos , Contagem de Linfócitos , Hemorragia Gastrointestinal , Nefropatias
3.
Int. j. morphol ; 37(4): 1527-1533, Dec. 2019. tab, graf
Artigo em Espanhol | LILACS | ID: biblio-1040165

RESUMO

En órganos dañados, el ácido láctico (AL) modifica la respuesta inmune innata e inflamatoria, induciendo una menor expresión de citoquinas pro-inflamatorias, que provocan, la modulación del reclutamiento de células inmunes. El daño por compresión del nervio isquiático (NI) desencadena una respuesta inflamatoria y un aumento exponencial del infiltrado inflamatorio de células inmunes, produciendo la destrucción de axones y pérdida funcional del nervio. El objetivo de este estudio es evaluar el efecto agudo de la inyección de AL, sobre la proporción de células inmunes en la fase inflamatoria temprana, en el sitio de lesión del NI post compresión. Para ello, se utilizaron 15 ratas machos Sprague Dawley adultas, en tres grupos de compresión nerviosa. Un grupo control, un grupo control negativo con placebo (100 µL PBS) y un grupo experimental con inyección de 100 µL de AL [20mM]. Al tercer día los NI se analizaron histológicamente y se estableció la proporción de células inmunes en el sitio de lesión. Los resultados muestran que la inyección intraneural de AL provoca una disminución en el porcentaje de linfocitos y un aumento en el porcentaje de macrófagos. Este es el primer trabajo de inyección intraneural de AL y demuestra el efecto modulador del AL sobre las células inmunes en el sistema nervioso periférico.


In damaged organs, lactic acid (LA) modifies the innate and inflammatory immune response, inducing a lower expression of pro-inflammatory cytokines, which provoke the modulation of immune cell recruitment. Damage by compression of the sciatic nerve (SN) triggers an inflammatory response and an exponential increase in the inflammatory infiltrate of immune cells, producing the destruction of axons and functional loss of the nerve. The objective of this study is to evaluate the acute effect of the injection of LA, on the proportion of immune cells in the early inflammatory phase, in the site of SN post-compression injury. For this, 15 adult Sprague Dawley rats were used in three groups of nervous compression. A control group, a negative control group with placebo (100 mL PBS) and an experimental group with injection of 100 mL of LA [20mM]. On the third day, the SNs were histologically analyzed and the proportion of immune cells at the injury site was established. The results show that the intraneural injection of LA causes a decrease in the percentage of lymphocytes and an increase in the percentage of macrophages. This is the first work of intraneural injection of LA and demonstrates the modulating effect of LA on immune cells in the peripheral nervous system.


Assuntos
Animais , Masculino , Ratos , Nervo Isquiático/efeitos dos fármacos , Nervo Isquiático/imunologia , Ácido Láctico/farmacologia , Síndromes de Compressão Nervosa/patologia , Nervo Isquiático/patologia , Linfócitos/efeitos dos fármacos , Citocinas/imunologia , Citocinas/metabolismo , Ratos Sprague-Dawley , Ácido Láctico/administração & dosagem , Inflamação/imunologia , Macrófagos/efeitos dos fármacos
4.
Salud(i)ciencia (Impresa) ; 23(5): 428-437, jun. 2019. tab., ilus.
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-1025191

RESUMO

The purpose of this work was to analyze the prevalence of fetal mortality (FM) in mothers in early adolescence (10-14 years), late adolescence (15-19 years) and in adults (20-34 years), during the period 2014-2016, in the North Department of Santander-Colombia. The factors taken into account were: gestation time, fetal weight, childbirth, basic causes, area of residence, and educational level of the mothers. Method: The study was retrospective, correlational, analytical-comparative. The database was from a secondary public access source of the National Administrative Department of Statistics (DANE-Colombia). The analysis was performed using the following tests: chi-square, Kruskal-Wallis H, Cramer's V coefficient, Goodman and Kruskal's gamma, Tukey's post-hoc procedures and the Bonferroni method based on Student's t-test. Results: The prevalence of FM for the years 2014-2016 was 10.0 per 1000 live births in mothers in early adolescence, 19.2 in mothers in late adolescence and 18.6 in adult mothers. It emerged that the prevalence of FM in pregnancies of under 22 weeks was higher in adult mothers, before delivery and during childbirth (chi-square = 32.023; p = 0.021), and there was a slight negative relationship between mother's age and weight of the fetus (gamma = -0.186; p = 0.014). The prevalence of FM was higher in adult mothers residing in the municipal district (chi-square = 80.18; p = 0.000), in mothers with primary, secondary and professional-level basic education (chi-square = 105.56; p = 0.000), and greater in adult mothers due to obstetric complications and birth trauma


La lepra es una enfermedad infecciosa crónica causada por Mycobacterium leprae, la cual tiene una notoria afinidad por la piel y los troncos nerviosos periféricos. Esta enfermedad se caracteriza por tener una clínica polimorfa que depende de la respuesta inmune del hospedero. La inmunopatogénesis de esta enfermedad aún representa un reto para los investigadores, y un eslabón faltante en su comprensión es el estudio de los micronutrientes, los cuales se ha demostrado que tienen la capacidad de modular la respuesta inmune innata y adaptativa. El objetivo de esta revisión es describir y relacionar algunos nutrientes, como las vitaminas A, D, E, C y B6, el folato, el zinc y el hierro, con la respuesta inmune en la lepra. Además, proponemos que algunos micronutrientes (vitaminas A, D y C y zinc) serían importantes para mitigar la aparición de reacciones lepróticas por medio de la modulación de la respuesta inmune en el hospedero infectado por M. leprae, y que micronutrientes como las vitaminas A, D, B6 y D, el folato, el hierro y el zinc serían importantes para reducir la incidencia de la lepra, dado que promoverían una mejor respuesta inmune en convivientes. Por lo tanto, el estudio del estado nutricional y el aporte suplementario con micronutrientes en convivientes y en afectados con lepra sería clave en la eliminación de esta enfermedad que ha deformado cuerpos y ha destruido sueños a lo largo de los siglos.


Assuntos
Humanos , Vitaminas , Linfócitos , Estado Nutricional , Estresse Oxidativo , Micronutrientes , Imunidade , Inflamação , Hanseníase
5.
Rev. bras. ter. intensiva ; 31(1): 64-70, jan.-mar. 2019. tab
Artigo em Português | LILACS | ID: biblio-1003617

RESUMO

RESUMO Objetivo: Avaliar a razão neutrófilo-linfócito na predição de sepse e mortalidade em pacientes admitidos em uma unidade de terapia intensiva. Métodos: Estudo de caso-controle de pacientes adultos admitidos em terapia intensiva. Foram incluídos como casos pacientes que tiveram sepse como razão de admissão e possuíam exame laboratorial de hemograma prévio. As análises estatísticas realizadas foram curva ROC, regressão logística binária, Mann Whitney e qui-quadrado de Pearson. Foi considerado significativo valor de p < 0,05. Resultados: Os valores de curva ROC foram 0,62 para razão neutrófilo-linfócito, 0,98 para neutrófilos bastonados e 0,51 para leucócitos totais. A presença de razão neutrófilo-linfócito superior a 5,0, o número de leucócitos acima de 12.000mm3/mL e número de neutrófilos bastonados acima 10% foram fatores de risco para sepse, entretanto somente os escores SAPS 3 e SOFA estavam relacionados a mortalidade dos pacientes. Conclusão: A razão neutrófilo-linfócito e os neutrófilos bastonados em combinação com outros parâmetros podem ser marcadores na detecção precoce de sepse em terapia intensiva.


ABSTRACT Objective: To evaluate the neutrophil-lymphocyte ratio as a predictor of sepsis and mortality in patients admitted to an intensive care unit. Methods: Case-control study of adult patients admitted to an intensive care unit. Patients who had sepsis as the reason for admission and who had a previous complete blood count examination were included as case patients. The following statistical analyses were performed: ROC curves, binary logistic regression, and Mann-Whitney and Pearson's chi-square tests. p < 0.05 was considered significant. Results: The ROC curve values were 0.62 for neutrophil-lymphocyte ratio, 0.98 for band neutrophils and 0.51 for total leukocytes. The presence of a neutrophil-lymphocyte ratio greater than 5.0, leukocyte count above 12,000mm3/mL and band neutrophil percentage above 10% were risk factors for sepsis; however, only the SAPS 3 and SOFA score were related to patient mortality. Conclusion: The neutrophil-lymphocyte ratio and band neutrophils in combination with other parameters may be markers for the early detection of sepsis in intensive care units.


Assuntos
Humanos , Masculino , Feminino , Idoso , Linfócitos/metabolismo , Sepse/diagnóstico , Unidades de Terapia Intensiva , Neutrófilos/metabolismo , Biomarcadores/sangue , Estudos de Casos e Controles , Modelos Logísticos , Fatores de Risco , Sepse/sangue , Diagnóstico Precoce , Contagem de Leucócitos , Pessoa de Meia-Idade
6.
São Paulo; s.n; s.n; 2019. 72 p. ilus, graf, tab.
Tese em Português | LILACS | ID: biblio-999825

RESUMO

A hipercolesterolemia familial (HF) é uma doença autossômica dominante considerada como uma das formas mais graves de hiperlipidemia, assim como, a principal causa de morbi-mortalidade por ser o principal fator desencadeante da aterosclerose. A alteração primária e mais freqüente da HF incide no gene do receptor da LDL (LDLr), sabe-se que mais de 1600 mutações são descritas na literatura e a principal consequência dessas alterações resultam no comprometimento da remoção da LDL, aumentando a concentração plasmática. Atualmente, o ultrasequenciamento genômico permite gerar muitos dados, que podem identificar novas mutações gênicas de forma eficiente, reprodutiva e rápida. No entanto, somente a validação da nova mutação por atividade funcional pode realmente estabelecer a associação com a doença. O presente estudo tem como objetivo realizar a análise da atividade do receptor da LDL, identificadas através do sequenciamento de alto rendimento, no gene LDLr realizado pelo nosso grupo de pesquisa e correlacionar com dados clínicos, in vitro, in silico e estrutural. Para cumprir esta meta, os linfócitos T dos portadores de HF foram isolados do sangue periférico, cultivados e submetidos a estímulo para a expressão de receptores da LDL, incubados com LDL marcada para avaliação de ligação e interiorização pelas células de cada paciente. Dos 30 pacientes selecionados para esse estudo, 63% apresentaram mutação no LDLR, sendo que quase todas as variantes (p.Gly373Asp, p.Asp601His, p.Ile488Thr, p.Gly549Asp, p.Gly592Glu e Gly681Asp) são localizadas no segundo domínio entre os éxons 7 ao 14. De acordo com o docking molecular a variante p.Gly592Glu (rs137929307), que já foi identificada na população polonesa, espanhola e brasileira, já relacionada com a HF, pode aumentar a interação do LDLr com a ApoB e consequentemente o modo de interação entre as proteínas, no estudo in vitro foi possível notar um aumento tanto na média de fluorescência da ligação e da ligação e interiorização em relação a quantidade de LDLr na superfície celular


Familial hypercholesterolemia (HF) is an autosomal dominant disease considered as one of the most severe forms of hyperlipidemia, as well as the main cause of morbidity and mortality because it is the main triggering factor for atherosclerosis. The primary and more frequent alteration of the HF affects the LDL receptor gene (LDLr), it is known that more than 1600 mutations are described in the literature and the main consequence of these alterations results in the compromise of the LDL removal, increasing the plasma concentration. Nowadays, genomic ultrasequencing allows the generation of many data, which can identify new gene mutations efficiently, reproductively and rapidly. However, only the validation of the new functional activity mutation can actually establish association with the disease. The aim of the present study was to analyze LDL receptor activity, identified by high-throughput sequencing, in the LDLr gene performed by our research group and to correlate with clinical, in vitro, in silico and structural data. To meet this goal, the T lymphocytes from the HF carriers were isolated from the peripheral blood, cultured and challenged for the expression of LDL receptors, incubated with labeled LDL for binding assessment and internalization by the cells of each patient. Of the 30 patients selected for this study, 63% had a mutation in LDLR, and almost all variants (p.Gly373Asp, p.Asp601His, p.Ile488Thr, p.Gly549Asp, p.Gly592Glu and Gly681Asp) are located in the second domain between exons 7 to 14. According to the molecular docking the variant p.Gly592Glu (rs137929307), which has already been identified in the Polish, Spanish and Brazilian population, already related to HF, can increase the interaction of LDLr with ApoB and consequently the mode of interaction between proteins, in the in vitro study it was possible to note an increase in both the mean fluorescence of binding and binding and internalization in relation to the amount of LDLr on the cell surface


Assuntos
Humanos , Masculino , Feminino , Adulto , Receptores de LDL/análise , Estudo de Validação , Lipoproteínas LDL/análise , Linfócitos , Simulação de Acoplamento Molecular/estatística & dados numéricos , Hiperlipoproteinemia Tipo II/classificação
7.
Rev. bras. ortop ; 53(6): 778-782, Nov.-Dec. 2018. tab
Artigo em Inglês | LILACS | ID: biblio-977901

RESUMO

ABSTRACT Objective: The objective of this study was to evaluate the relationship between the neutrophil/lymphocyte ratio and the presence of signs of arthrosis in both hips in patients followed at this medical center. Methods: This was a cross-sectional, retrospective study through the analysis of medical records and database review of patients over 18 years of age with hip arthrosis, followed at the outpatient clinic of this hospital. Results: Regarding the analysis of the Mann-Whitney test to correlate the neutrophil/lymphocyte ratio and laterality, a bi-lateral test result of p = 0.036 was obtained, thus demonstrating a significant difference between the observed groups. When we analyzed the absolute values of neutrophils and lymphocytes, the authors obtained results of p = 0.14 and p = 0.24. Therefore, it was not possible to observe statistically significant differences between the absolute values in the two groups. Conclusion: Considering the interactions between the inflammatory mechanisms in osteoarthritis and the fact that the interaction between neutrophils and lymphocytes has differences in relation to the laterality of the coxarthrosis, it is hypothesized that the inflammatory etiology of unilateral and bilateral osteoarthritis could have different dynamics. However, more in-depth studies with flow cytometry are needed to assess the possible impact of these differences in the inflammatory mechanisms observed in this study.


RESUMO Objetivo: Avaliar a relação entre a razão neutrófilo/linfócito e a presença de sinais de artrose em ambos os quadris em pacientes acompanhados neste serviço. Métodos: Estudo transversal, retrospectivo, que usou análise de prontuários e revisão de banco de dados de pacientes maiores de 18 anos com diagnóstico de artrose de quadril acompanhados no ambulatório deste hospital. Resultado: Com relação à análise do teste de Mann-Whitney para correlacionar a razão neutrófilo/linfócito e a lateralidade, observou-se um resultado de teste bilateral de 0,036, evidenciou desse modo a diferença entre os grupos. Quando os valores absolutos de neutrófilos e linfócitos foram analisados, observaram-se p = 0,14 e p = 0,24, não foi possível observar diferenças estatisticamente significativas entre os valores absolutos nos dois grupos. Conclusões: Considerando-se as interações entre os mecanismos inflamatórios na osteoartrose e o fato de que a interação entre os neutrófilos e os linfócitos tem diferenças com relação à lateralidade da coxartrose, é possível levantar a hipótese de que a etiologia inflamatória da osteoartrose unilateral e da bilateral tem dinâmicas diferentes. Entretanto, são necessários estudos mais aprofundados, com citometria de fluxo, para avaliar o impacto com relação às diferenças nos mecanismos inflamatórios observados nesse estudo.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Osteoartrite , Linfócitos , Inflamação , Neutrófilos
8.
Pesqui. vet. bras ; 38(11): 2019-2022, Nov. 2018. tab
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-976404

RESUMO

The use of frozen cells allows studies on diseases and other immunological assays, since it facilitates the logistics of collecting and transporting, including laboratories located in different cities or other countries. The objectives of this study were to verify if the storage in the refrigerator after collection at different times changes the viability of total leukocytes after months of freezing and the ratio of CD4/CD8 is affected by the freezing process. Venous blood of 15 healthy horses was used and the experiment was divided into 2 stages. In the first, the viability of the leukocytes before and after freezing was verified, as well as different storage times in the refrigerator (fresh blood, stored for 24 and 48 hours) before the freezing process. In the second part, the immunophenotyping of the T lymphocytes was performed, in order to observe if after thawing the relationship between LT CD4 and LT CD8 undergoes change. There was no difference between the amounts of viable leucocytes from frozen fresh blood compared to fresh blood before freezing, nor difference between the viability of blood left in the refrigerator (4°C) for 24 hours and fresh blood and fresh frozen blood. There was a decrease in viability of frozen leukocytes after 48 hours left in the freezer for other samples; however, the recovery was 107x cells. Regarding the immunophenotyping of CD2CD4+ and CD2CD8+ double-labeled T lymphocytes in the blood stored in the refrigerator for 24 hours before freezing, no difference was observed between before and after 6 months of freezing. It is concluded that cryopreservation of equine total leukocytes is possible and, although there was a difference between freezing times, even in the less viable sample, sufficient numbers of cells were recovered for other immunological assays.(AU)


A utilização de células congeladas possibilita estudos sobre doenças e outros ensaios imunológicos, pois facilita a logística de coleta e transporte, inclusive para laboratórios localizados em cidades diferentes ou outros países. Os objetivos desse estudo foram verificar se o armazenamento sobre refrigeração em diferentes tempos e a criopreservação alteram a viabilidade de leucócitos totais e se a relação entre LT CD4/CD8 é afetada pelo processo de congelamento. Utilizou-se sangue venoso de 15 cavalos hígidos e o experimento foi dividido em 2 etapas. Na primeira foi analisado se houve alteração na viabilidade dos leucócitos provenientes de amostras de sangue armazenadas em diferentes tempos em geladeira antes e depois de 6 meses de congelamento a -80°C. Na segunda parte, realizou-se a imunofenotipagem dos linfócitos T, com a finalidade de observar se após o descongelamento a relação entre LT CD4 e LT CD8 sofre alteração. Não houve diferença entre a quantidade de leucócitos viáveis da amostra de sangue fresco descongelado em relação ao sangue fresco antes do congelamento, nem diferença entre a viabilidade do sangue deixado em congelador (4°C) por 24 horas e do sangue fresco. Houve uma diminuição da viabilidade dos leucócitos, após o descongelamento de 6 meses (-80°C), das amostras de sangue deixado em geladeira por 48 horas antes do congelamento em relação às outras amostras, porém, a recuperação foi de células x107. Quanto à imunofenotipagem de linfócitos T com dupla marcação CD2CD4+ e CD2CD8+, no sangue armazenado em geladeira por 24 horas antes do congelamento, e não foi observada diferença entre antes ou depois de 6 meses de congelamento. Conclui-se que a criopreservação de leucócitos totais de equinos é possível e, embora tenha havido diferença entre os tempos de congelamento, mesmo na amostra menos viável, houve recuperação de uma quantidade de células suficientes para outros ensaios imunológicos.(AU)


Assuntos
Animais , Sangue/imunologia , Linfócitos/citologia , Criopreservação/métodos , Cavalos/sangue
10.
Mem. Inst. Invest. Cienc. Salud (Impr.) ; 16(2): 12-20, Ago. 2018. ilus
Artigo em Espanhol | LILACS, BDNPAR | ID: biblio-997947

RESUMO

Las plantas de uso en medicina tradicional constituyen una fuente importante de compuestos con actividad inmunomoduladora; entre ellas las especies del género Baccharis, conocidas popularmente como "Jaguareteka´a" en nuestro país, son ampliamente empleadas. En este estudio se evaluó la actividad inmunomoduladora de extractos metanólicos de tres especies del género Baccharis (B. trimera, B. notosergilay B. punctulata) sobre la proliferación de células mononucleares humanas de sangre periférica. Los extractos de las tres especies estudiadas estimularon la proliferación de las células mononucleares. Específicamente, el extracto de B. notosergila estimuló la proliferación celular a todas las concentraciones probadas (5, 10, 25 y 50 µg/mL), mientras que los extractos de B. trimera y B. punctulata mostraron este efecto a 5 y 10 µg/mL. Además, por presentar mayor inducción de la proliferación, se realizó un fraccionamiento con diferentes solventes del extracto metanólico de B. notosergila y B. punctulata. La fracción de acetato de etilo de ambos extractos vegetales aumentó la proliferación celular, sugiriendo que compuestos de polaridad media son los responsables de esta actividad. Estos resultados demuestran que los extractos de B. trimera, B. notosergila y B. punctulata poseen actividad inmunomoduladora sobre células mononucleares humanas y servirán de base a otros estudios para determinar el o los componentes activos de los extractos sobre el sistema inmune(AU)


Plants used in traditional medicine are an important source of compounds with immunomodulatory activity. Species of the genus Baccharis, popularly known as "Jaguareteka'a" in our country, are used in folk medicine for the treatment of liver, gastrointestinal, inflammatory and infectious diseases. In this study, we evaluated the immunomodulatory activity of methanolic extracts of three species of the genus Baccharis (B. trimera, B. notosergila and B. punctulata) on the proliferation of human peripheral blood mononuclear cells. Extracts of the three species studied stimulated the proliferation of mononuclear cells. The extract of B. notosergila stimulated cell proliferation at all concentrations tested, while extracts of B. trimera and B. punctulata stimulated at 5 and 10 µg/mL. In addition, we carried out a separation with different solvents of the methanolic extract of B. notosergila and B. punctulata. The ethyl acetate fraction of both plant extracts induced the proliferation of immune cells. These results show that the extracts of B. trimera, B. notosergila and B. punctulata had immunomodulatory activity on human mononuclear cells. Future work will be required to identify the components responsible for the activity on the immune system(AU)


Assuntos
Células Sanguíneas/efeitos dos fármacos , Extratos Vegetais/farmacologia , Baccharis , Proliferação de Células/efeitos dos fármacos , Imunomodulação/efeitos dos fármacos , Plantas Medicinais , Linfócitos/efeitos dos fármacos , Sobrevivência Celular
11.
Rev. argent. mastología ; 37(134): 69-79, abr. 2018. tab, graf
Artigo em Espanhol | LILACS, BINACIS | ID: biblio-1118117

RESUMO

Introducción Los tumores de mama se encuentran frecuentemente rodeados por células inflamatorias como signo de interacción entre el tumor y el huésped, siendo esta crítica para el desarrollo y progresión del cáncer. Algunas observaciones sugieren el valor pronóstico de los linfocitos estromales intratumorales (tils). Sin embargo, su evaluación no es rutinaria ya que su relevancia clínica aún no se encuentra consolidada. Objetivos Los objetivos de este trabajo son: • la evaluación de la concordancia interobservador de los linfocitos intratumorales (tils); • su relación con la sobrevida libre de enfermedad (sle); • su valoración como factor pronóstico en cáncer de mama Triple Negativo. Material y método Se seleccionaron retrospectivamente pacientes con tumores de mama Triple Negativos operados en el Instituto Alexander Fleming entre 2010-2016 sin tratamiento neoadyuvante, alcanzando una muestra de 65 pacientes. Resultados El porcentaje mediano de tils fue de 30% (12,5-50), y se consideraron como "Tumores ricos en linfocitos" (Lymphocyte Predominant Breast Cancerlpbc) a los de 19 pacientes (29,2%). Tanto la presencia de tils (p>0,01) como la definición del subtipo de lpbc (p=0,03) presentaron asociación estadísticamente significativa con la recurrencia de enfermedad. En el análisis multivariado, presentaron asociación la histología ductal y el valor de tils. Por cada 10% de aumento, disminuye 31% el riesgo de recaída. El valor de tils estratificado en 3 subgrupos (≤20; 30-40; ≥50%) presentó asociación estadísticamente significativa con la Sobrevida Libre de Enfermedad (Log Rank <0,01). Conclusiones En este trabajo se logró describir una característica tumoral y del huésped reproducible, cuya instrumentación podría generalizarle por el potencial valor pronóstico.


Introduction Breast tumors are frequently surrounded by inflammatory cells as a sign of interaction between the tumor and host, being this relationship critical for cancer development and progression. Present evidence suggests that tumor infiltrating lymphocytes (tils) may provide prognostic information. Nevertheless, tils description is not generalized as its clinical relevance is not consolidated. Objectives • evaluation of interobserver concordance of intratumoral lymphocytes (tils); • its relationship with Disease Free Survival; • its assessment as a prognostic factor in Triple Negative breast cancer. Materials end method Triple Negative breast cancer patients with surgery in Instituto Alexander Fleming, between 2010-2016, without neoadyuvant treatment, were selected retrospectively. 65 patients were selected. Results In the 65 patients selected, tils median percentage was 30% (12.5-50), and 19 (29.2%) were considered Lymphocyte Predominant Breast Cancer (lpbc). tils percentage (p>0.01) and lpbc subtype (p=0.03) presented significant association with disease recurrence. Multivariate analysis showed that ductal histology and tils percentage are associated with disease recurrence. For every 10% increment in tils, there was a 31% reduction of risk of recurrence. High tils value stratified in 3 subgroups (≤20; 30-40; ≥50%) was associated with better Disease Free Survival (Log Rank 0.01). Conclusions Due to its potential prognostic value and its technical reproducibility, we believe that this tumoral and host characteristic must be generalized.


Assuntos
Humanos , Feminino , Neoplasias da Mama , Linfócitos , Linfócitos do Interstício Tumoral , Neoplasias de Mama Triplo Negativas
12.
Med. interna (Caracas) ; 34(1): 57-60, 2018. ilus
Artigo em Espanhol | LILACS, LIVECS | ID: biblio-1008289

RESUMO

Los linfomas constituyen un grupo diverso de neoplasias malignas, que se originan del sistema linfático(1). Aproximadamente el 85% se agrupan dentro de los denominados Linfomas No Hodgkin (LNH). Los LNH constituyen un numeroso grupo de linfomas derivados de la transformación neoplásica de los linfocitos B, T y Células NK, provenientes de diversas zonas que comprometen los folículos linfáticos en los nódulos linfáticos o en el sistema linfoide extranodal(2). Las localizaciones extra ganglionares primarias representan más de 10% de los casos y los sitios más frecuentes comprenden estómago, intestino delgado, orofaringe, piel, hígado y cerebro; además de otras bastante raras como ano, corazón, músculos y encías. Los linfomas testiculares primarios son muy raros, representan aproximadamente el 5% de todas las neoplasias testiculares malignas, menos del 1% de los LNH y el 4% de los LNH extra nodales(3). Esta neoplasia constituye el tumor maligno testicular más frecuente en sujetos ancianos. La presentación clínica típica es una masa testicular unilateral acompañada en ocasiones de hidrocele y dolor agudo escrotal. A continuación presentamos un caso que requirió de la participación de múltiples especialidades de nuestra institución para un manejo conjunto y finalmente el paciente falleció(AU)


The lymphomas constitute a diverse group of malignant neoplasms, which originate from the lymphatic system(1). Approximately 85% are grouped into the so-called Non-Hodgkin's Lymphomas (NHL). NHL are a large group of lymphomas derived from the neoplastic transformation of B, T and NK cells of different areas with involvement of lymphatic follicles in the lymph nodes or the extranodal lymphoid system(2). The primary extraganglionic sites represent more than 10% of the cases and the most frequent sites include stomach, small intestine, oropharynx, skin, liver and brain; others, quite rare, are anus, heart, muscles and gums.Primary testicular lymphomas are extremely rare, accounting for approximately 5% of all malignant testicular neoplasms, less than 1% of NHL and 4% of extranodal NHL(3). This neoplasm constitutes the most frequent testicular malignant tumor in elderly subjects. The typical clinical presentation is a unilateral testicular mass, sometimes accompanied by hydrocele and acute scrotal pain. We present a case which required the participation of multiple specialties of our institution for management but the patient finally died(AU)


Assuntos
Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Testiculares/etiologia , Linfoma não Hodgkin/patologia , Sistema Linfático/patologia , Linfócitos , Medicina Interna , Oncologia
13.
Arch. argent. pediatr ; 115(6): 576-580, dic. 2017. tab
Artigo em Inglês, Espanhol | LILACS, BINACIS | ID: biblio-1038392

RESUMO

Objetivo.Evaluar la relación entre las variables de volumen plaquetario medio (VPM), índice de neutrófilos/linfocitos (INL) e índice de trombocitos/linfocitos (ITL) y el diagnóstico o la predicción del desenlace en los niños con intoxicación por mordedura de serpiente. Métodos.Se realizó una evaluación retrospectiva de niños con diagnóstico de intoxicación por mordedura de serpiente y un grupo de referencia de sujetos sanos. Se clasificó a los pacientes en tres grupos de intoxicación: leve, moderada y grave. Resultados.Se incluyeron 142 niños en el estudio. La leucocitosis (p= 0, 003), la neutrofilia (p= 0, 026) y la trombocitopenia (p= 0, 034) fueron significativamente más frecuentes en los casos de intoxicación por mordedura de serpiente grave; sin embargo, no se hallaron diferencias estadísticamente significativas en relación con el VPM, el INL y el ITL entre los diferentes grupos de intoxicación por mordedura de serpiente. La media del VPM, el INL y el ITL era significativamente mayor entre los niños con mordedura de serpiente en comparación con los controles sanos. Conclusiones.Según nuestros resultados, el uso del VPM, el INL y el ITL podría servir para el diagnóstico como marcadores inflamatorios en los casos de intoxicación por mordedura de serpiente.


Background: The objective of this study is to evaluate the relationships between the mean platelet volume (MPV), neutrophil to lymphocyte ratio (NLR) and platelet to lymphocyte ratio (PLR) variables and diagnosis or prediction of outcome in children with snakebite envenomation. Methods: Children diagnosed with snakebite envenomation and a control group of healthy subjects were retrospectively evaluated. Patients were classified into three groups as mild, moderate and severe. Results: 142 children were enrolled in the study. Leukocytosis (p= 0.003), neutrophilia (p= 0.026) and thrombocytopenia (p= 0.034) were significantly more common in severe snakebite envenomation, although no statistical significant were found in association with MPV, NLR and PLR between snakebite envenomation groups. The mean MPV, NLR and PLR were found to be significantly higher in children with snakebite compared to than among healthy controls. Conclusions: Our results suggested that MPV, NLR and PLR may be useful for the diagnosis as inflammatory markers in snakebite envenomation.


Assuntos
Humanos , Pré-Escolar , Criança , Adolescente , Envenenamento , Serpentes , Plaquetas , Linfócitos , Criança , Índice , Volume Plaquetário Médio , Neutrófilos
14.
Iatreia ; 30(2): 117-130, abr.-jun. 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-892649

RESUMO

SUMMARY Introduction: Parkinson's disease (PD) is a neurological disorder associated with the selective loss of dopaminergic (DAergic) neurons. Clinical data suggest that oxidative stress (OS) and dysregulation of glucose (G) metabolism are early events in PD. However, no data are available to explain the molecular connection between glucose metabolism, OS, and neuronal demise in PD. Human lymphocytes share a similar dopaminergic signaling mechanism with DAergic neurons. Further, rotenone (ROT) is a mitochondrial complex I inhibitor that selectively induces apoptosis through OS in dopaminergic neurons and lymphocytes. Thus, to test the hypothesis that G metabolism and OS are linked in dopaminergic system toxicity and PD, human lymphocytes were cultured with ROT in the presence or absence of various concentrations of glucose. Objective: This study examines the response of human lymphocytes to glucose (11, 55, 166, 277, 555 mM G) in the absence or presence of ROT (250 microM). Methods: Light and fluorescence microscopy and immunocytochemistry techniques were used to evaluate morphological and biochemical changes in human lymphocytes. Results: 55 mM G was effective in suppressing ROT-induced apoptosis in lymphocytes via 5 pathways: (i) pentose phosphate pathway (PPP), (ii) glutathione (GSH) pathway, (iii) superoxide dismutase (SOD) and catalase (CAT) antioxidant systems, and (iv) Phosphoinositide 3-kinase (PI3-K) signaling. Additionally, we report for the first time that G rescued lymphocytes from ROT-induced apoptosis by (v) activating NF-kB and down-regulating p53 and caspase-3. Signaling (e.g., LY294002) and metabolic inhibitors of these pathways (e.g., dehydroepiandrosterone (DHEA), L-buthioninesulfoximine (BSO), 1,3-Bis (2-chloroethyl)-1-nitrosourea (BCNU), mercaptosuccinic acid (MS), 3-amino-1,2,4- triazole (AT), sodium diethyldithiocarbamate (DDC)) only partially reversed the protective effect of 55 mM G on lymphocytes exposed to ROT. Conclusion: These data suggest that high G simultaneously triggers cellular signaling and antioxidant systems to ensure global cell protection against stressful conditions in DAergic.


RESUMEN Introducción: la enfermedad de Parkinson (EP) es un trastorno neurológico asociado con la pérdida selectiva de neuronas dopaminérgicas (DAérgicas). Datos clínicos sugieren que el estrés oxidativo (EO) y la desregulación del metabolismo de la glucosa (G) son eventos tempranos en la EP. Sin embargo, no existe información que explique la posible asociación molecular entre el metabolismo de la glucosa, el EO y la muerte neuronal. Los linfocitos humanos comparten mecanismos de señalización DAérgicos comunes. Más aún, la rotenona (ROT) es un inhibidor que selectivamente induce apoptosis vía EO en neuronas DAérgicas y linfocitos. Para evaluar la hipótesis que el metabolismo de la G y el EO están asociados con la toxicidad del sistema DAérgicas y EP, se cultivaron linfocitos humanos con ROT en presencia o ausencia de varias concentraciones de G. Objetivo: este estudio examina la respuesta de los linfocitos a G (11, 55, 166, 277, 555 mM) en ausencia o presencia de ROT (250 microM). Métodos: se utilizaron técnicas de microscopía de luz y fluorescencia e inmunocitoquímica para evaluar los cambios morfológicos y bioquímicos de los linfocitos. Resultados: la G 55 mM fue eficaz en suprimir la apoptosis en linfocitos inducida por ROT vía activación de 5 rutas metabólicas: (i) la vía pentosa fosfato, (ii) la vía glutatión; (iii) los sistemas antioxidantes superóxido dismutasa (SOD) y catalasa (CAT); (iv) fosfoinositol 3 cinasa (PI3-K). Además, se observó por primera vez que la G rescata linfocitos de la apoptosis inducida por ROT vía (v) activación del factor nuclear kappa-B (NFkB) y por regulación a la baja de p53 y de la caspasa-3. Se demostró que los inhibidores de señalización (v.gr. LY294002) e inhibidores metabólicos (v.gr. DHEA, BSO, BCNU, MS, DCC) revierten parcialmente los efectos citoprotectores de la G 55 mM en linfocitos expuestos a ROT. Conclusión: estos hallazgos sugieren que la alta concentración de G induce simultáneamente sistemas de señalización y antioxidantes para asegurar la protección global de la célula contra condiciones estresantes en células DAérgicas.


RESUMO Introdução: a doença de Parkinson (PD) é uma desordem neurológica associada a perda seletiva de neurônios dopaminérgicos (Daergicas). Dados clínicos sugerem que o estresse oxidativo (EO) e a desregulação do metabolismo da glicose (G) são eventos iniciais no PD. No entanto, não há nenhuma informação que explica a possível associação molecular entre o metabolismo da glicose, EO e morte neuronal. Linfócitos humanos compartilham comum Daergicos mecanismos de sinalização. Além disso, a rotenona (ROT) é um inibidor que seletivamente induz apoptose através de EO nos neurônios Daergicas e linfócitos. Para avaliar a hipótese de que o metabolismo do G e EO estão associadas com a toxicidade do Daergicas e sistema de EP, linfócitos humanos com ROT foram cultivados na presença ou ausência de várias concentrações de G. Objetivo: este estudo analisa a resposta dos linfócitos a G (55 11, 166, 277, 555 mM) na ausência ou presença de podridão (250 microM). Métodos: luz e imunocitoquímica, microscopia de fluorescência foram utilizadas técnicas para avaliar as alterações morfológicas e bioquímicas de linfócitos. Resultados: a 55mM G foi eficaz em suprimir a apoptose em linfócitos induzidos por (ROT) a través da ativação de 5 vias metabólicas: (i) a través do fosfato de pentose, (ii) a través de glutationa; (iii) a superóxido dismutase de antioxidante (SOD) e catalase (CAT) sistemas; (iv) Phosphoinositide 3 cinase (PI3-K). Além disso, foi observada pela primeira vez que o G resgata a apoptose de linfócitos induzida por (ROT) via ativação (v) por fator nuclear kappa-B, (NF-kB) e por regulação por baixo de p53 e Caspase-3. Mostrou que inibidores (por exemplo, LY294002), inibidores de sinalização e metabólicos (por exemplo, DHEA, BSO, BCNU, MS, DCC) reverteu parcialmente os efeitos dos tilacoides do G 55 mM de linfócitos expostos à (ROT). Conclusão: estes resultados sugerem que a alta concentração de G induz simultaneamente antioxidantes e sistemas de sinalização para garantir a proteção global da célula de condições estressantes nas células Daergicas.


Assuntos
Humanos , Doença de Parkinson , Linfócitos , Glucose , Doenças do Sistema Nervoso , Microscopia
15.
Med. leg. Costa Rica ; 34(1): 325-231, ene.-mar. 2017. ilus
Artigo em Espanhol | LILACS | ID: biblio-841460

RESUMO

Resumen:Los linfomas son un conjunto de enfermedades neoplásicas que se originan en células del sistema inmunitario, y que afectan específicamente a las células del sistema linfopoyético, que es el encargado de producir los linfocitos. Son considerados como la tercera enfermedad maligna más frecuente de la niñez, representan aproximadamente, el 12% de los casos nuevos de cáncer diagnosticados en los menores de 15 años. De éstos, alrededor de 40% son linfomas de Burkitt.


Abstract:Lymphomas are a set of neoplastic diseases that originate in cells of the immune system and that specifically affect cells lymphopoietic system, which is responsible for producing lymphocytes. They are regarded as the third most common malignant disease of childhood, representing approximately 12% of new cases of cancer diagnosed in children under 15 years. Of these, about 40 % are Burkitt lymphomas.


Assuntos
Humanos , Masculino , Adulto , Linfócitos , Linfoma de Burkitt/diagnóstico , Biópsia de Linfonodo Sentinela , Medicina Legal , Sistema Linfático , Linfoma
16.
Braz. j. med. biol. res ; 50(8): e5163, 2017. graf
Artigo em Inglês | LILACS | ID: biblio-888986

RESUMO

Pseudobrickellia brasiliensis (Asteraceae) is a plant commonly known as arnica-do-campo and belongs to the native flora of the Brazilian Cerrado. The alcoholic extract of the plant has been used as an anti-inflammatory agent in folk medicine, but the biological mechanism of action has not been elucidated. The present study evaluated the composition of P. brasiliensis aqueous extract and its effects on pro-inflammatory cytokine production and lymphocyte proliferation. The extracts were prepared by sequential maceration of P. brasiliensis leaves in ethanol, ethyl acetate, and water. Extract cytotoxicity was evaluated by trypan blue exclusion assay, and apoptosis and necrosis were measured by staining with annexin V-FITC and propidium iodide. The ethanolic (ETA) and acetate (ACE) extracts showed cytotoxic effects. The aqueous extract (AQU) was not cytotoxic. Peripheral blood mononuclear cells stimulated with phorbol myristate acetate and ionomycin and treated with AQU (100 μg/mL) showed reduced interferon (IFN)-γ and tumor necrosis factor (TNF)-α expression. AQU also inhibited lymphocyte proliferative response after nonspecific stimulation with phytohemagglutinin. The aqueous extract was analyzed by liquid chromatography coupled with photodiode array detection and mass spectrometry. Quinic acid and its derivatives 5-caffeoylquinic acid and 3,5-dicaffeoylquinic acid, as well as the flavonoids luteolin and luteolin dihexoside, were detected. All these compounds are known to exhibit anti-inflammatory activity. Taken together, these findings demonstrate that P. brasiliensis aqueous extract can inhibit the pro-inflammatory cytokine production and proliferative response of lymphocytes. These effects may be related to the presence of chemical substances with anti-inflammatory actions previously reported in scientific literature.


Assuntos
Humanos , Anti-Inflamatórios/farmacologia , Asteraceae/química , Proliferação de Células/efeitos dos fármacos , Interferon gama/efeitos dos fármacos , Linfócitos/efeitos dos fármacos , Extratos Vegetais/farmacologia , Fator de Necrose Tumoral alfa/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Cromatografia Líquida de Alta Pressão , Interferon gama/metabolismo , Leucócitos Mononucleares/efeitos dos fármacos , Leucócitos Mononucleares/metabolismo , Extratos Vegetais/química , Fatores de Tempo , Fator de Necrose Tumoral alfa/metabolismo
17.
Repert. med. cir ; 26(3): 138-143, 2017. Ilus.
Artigo em Inglês, Espanhol | LILACS, COLNAL | ID: biblio-907026

RESUMO

Objetivo: determinar la validez diagnóstica de los valores elevados de la relación neutrófiloslinfocitos (RNL) en pacientes con bacteriemia que ingresan a urgencias. Material y métodos: se incluyeron 104 pacientes de los cuales cumplieron los criterios de inclusión 81 y se compararon con pacientes con hemocultivos negativos en relación 1:1. Se construyó la curva de la característica operativa del receptor (ROC) y se determinaron la sensibilidad, especificidad, valores predictivos y razones de probabilidades para las variables de valor absoluto de leucocitos (VAL) y de neutrófilos (VAN), PCR y RNL. Resultados: los únicos marcadores de infección con área bajo la curva (ABC) >0,7 fueron PCR y RNL. Siendo para la RNL en bacteriemia el punto de corte de 13,2 con una ABC de 0,71; sensibilidad 63% y especificidad 71,6%; valor predictivo positivo (VPP) de 69% y valor predictivo negativo (VPN) de 66%. El punto de corte para la PCR en bacteriemia fue de 17,1 con una ABC de 0,73; sensibilidad 66% y especificidad 74,7%; VPP de 73% y VPN de 69%. En el grupo de bacteriemia se encontró diferencia estadística significativa en la variable edad con una media de 68± 17,1 vs 58 ± 21,1 del grupo sin bacteriemia (p=0,001). El promedio de pacientes con TFG <60 ml/min/1.73m2 en el grupo con bacteriemia fue 69,1% al compararse en el grupo sin bacteriemia 46,9%, con un valor de p=0,0042. Conclusión: los valores elevados de la RNL en pacientes que ingresan a urgencias, son un buen predictor y de fácil acceso en bacteriemia.


Objective: To determine the diagnostic value of increased levels of the neutrophil-tolymphocyte ratio (NLR) in patients admitted to the emergency service with bacteremia. Materials and methods: One-hundred-four patients were included, of which 81 were eligible and were compared with patients with negative blood cultures in a 1:1 relationship. Receiving operating characteristic (ROC) curves were constructed and the sensitivity, specificity, predictive values and probability indicators for the absolute leukocyte count (ALC) and neutrophil absolute count (NAC), CRP and NLR were determined. Results: The only infection markers with an area under the curve (AUC) >0.7 were CRP and NLR. The cutoff value for NLR in bacteremia was 13.2 with an AUC of 0.71; which provided a sensitivity of 63%, and a specificity of 71.6%; positive predictive value (PPV) of 69% and negative predictive value (NPV) of 66%. The cutoff value for CRP in bacteremia was 17.1 with an AUC of 0.73; which provided a sensitivity of 66% and a specificity of 74.7%; PPV of 73% and NPV of 69%. A statistically significant difference was found in patients mean age 68± 17.1 years with positive blood cultures vs patients mean age 58 ± 21.1 years with negative blood cultures (p=0.001). The average number of patients with a GFR <60 ml/min/1.73m2 in the positive bacteremia group was 69.1% compared with the negative bacteremia group 46.9%, (p=0.0042). Conclusion: Increased values of NLR in patients admitted to the emergency service are a reliable and accessible predictor in bacteremia.


Assuntos
Humanos , Linfócitos , Neutrófilos , Bacteriemia , Emergências , Curva ROC
18.
Pesqui. vet. bras ; 36(12): 1155-1159, Dec. 2016. tab
Artigo em Inglês | LILACS, VETINDEX | ID: biblio-842035

RESUMO

In order to investigate the immune enhancement effects of Ophiopogon japonicus polysaccharide Ophiopogon japonicus (OJPS) on Newcastle disease (ND) live vaccine, chickens vaccinated against ND live vaccine was orally administered with the OJPS at high, medium and low concentrations respectively. In negative control group, chickens were given orally equal volume of physiological saline. On day 14, 21 and 28, the serum antibody titer, erythrocyte-C3b receptor rosette rate (E-C3bRR), erythrocyte-C3b immune complex rosette rate (E-ICRR) and peripheral lymphocyte proliferation were measured. The results showed that at most time points, the antibody titer, peripheral lymphocyte proliferation, E-C3bRR and elimination rate of immune complex of three OJPS administrating groups were significantly higher (P<0.05) than those in negative control group. It indicated that OJPS could significantly improve the immune efficacy of Newcastle disease live vaccine, Ophiopogon japonicus polysaccharide possessed synergistical immunoenhancement.(AU)


Assuntos
Animais , Galinhas/virologia , Doença de Newcastle/imunologia , Ophiopogon/química , Vacinas Virais/análise , Adjuvantes Imunológicos , Anticorpos/sangue , Eritrócitos/imunologia , Linfócitos/imunologia
19.
Rev. bras. reumatol ; 56(6): 497-503, Nov.-Dec. 2016. tab, graf
Artigo em Inglês | LILACS | ID: biblio-830071

RESUMO

ABSTRACT Objective: To characterize the inflammatory profiles of patients with systemic lupus erythematosus receiving standard treatment compared to healthy controls. Patients and methods: Peripheral venous blood was collected from systemic lupus erythematosus patients (n = 14) and controls (n = 18) at enrollment. Blood samples were used for quantification, by flow cytometry, of CD11b (integrin) and Chemokine receptor CXCR2 expression surface antigen in neutrophils and lymphocytes, while cytokines were assayed in serum samples. Purified neutrophils were assayed by their ability to phagocytize human plasma-opsonized zymosan. Results: Patients had a median (interquartile range) disease activity index of 1.0 (0-2.0) characteristic of patients in remission. Interleukin-6 and interleukin-10 serum concentrations were significantly higher in the patient group compared to controls and the phagocytic index of circulating neutrophils was significantly reduced in patients compared to controls. The levels of interleukin-2, interleukin-5, interleukin-8 and tumor necrosis factor alpha did not significantly differ between patients and controls. Flow cytometric analysis revealed that the integrin expression levels were reduced in lymphocytes (but not in neutrophils) obtained from systemic lupus erythematosus patients, while surface expression of the chemokine receptor 2 was similar in both neutrophils and lymphocytes. Conclusion: Systemic lupus erythematosus patients receiving standard treatment presented with elevated systemic levels of interleukin-6 and interleukin-10, reduced neutrophil phagocytic capacity, and reduced lymphocyte expression of integrin even when symptoms were in remission. These alterations to innate immune components may put these individuals at a greater risk for acquiring infections.


RESUMO Objetivo: Caracterizar os perfis inflamatórios de pacientes com lúpus eritematoso sistêmico (LES) que recebiam o tratamento padrão em comparação com controles saudáveis. Pacientes e métodos: Coletou-se o sangue venoso periférico de pacientes com LES (n = 14) e controles (n = 18) no momento da entrada no estudo. As amostras de sangue foram usadas para quantificação, por citometria de fluxo, da expressão dos antígenos de superfície CD11b (integrina) e CXCR2 em neutrófilos e linfócitos, enquanto as citocinas foram avaliadas em amostras de soro. Avaliou-se a capacidade dos neutrófilos purificados de fagocitar zimosan opsonizado com plasma humano. Resultados: Os pacientes apresentavam uma pontuação mediana (intervalo interquartil) no Sledai de 1 (0-2), característica de pacientes em remissão. As concentrações séricas de IL-6 e IL-10 foram significativamente maiores no grupo de pacientes em comparação com os controles; o índice de fagocitose de neutrófilos circulantes estava significativamente reduzido nos pacientes em comparação com os controles. Os níveis de IL-2, IL-5, IL-8 e TNF-α não diferiram significativamente entre pacientes e controles. A análise da citometria de fluxo revelou que os níveis de expressão de CD11b estavam reduzidos nos linfócitos (mas não nos neutrófilos) obtidos de pacientes com LES, enquanto a expressão do receptor de superfície CXCR2 foi semelhante em neutrófilos e linfócitos. Conclusão: Os pacientes com LES que recebiam tratamento padrão apresentaram níveis sistêmicos elevados de IL-6 e IL-10, redução na capacidade fagocítica dos neutrófilos e redução da expressão de CD11b em linfócitos, mesmo quando os sintomas estavam em remissão. Essas alterações nos componentes da imunidade inata podem colocar esses indivíduos em maior risco de adquirir infecções.


Assuntos
Humanos , Linfócitos/imunologia , Citocinas/imunologia , Lúpus Eritematoso Sistêmico/imunologia , Neutrófilos , Biomarcadores/sangue , Estudos de Casos e Controles , Interleucina-6
20.
Clinics ; 71(10): 611-616, Oct. 2016. tab, graf
Artigo em Inglês | LILACS | ID: lil-796863

RESUMO

OBJECTIVES: Pleural effusion is a common diagnostic and clinical problem. The differential diagnosis of pleural effusion may be difficult and may require several procedures, including invasive ones. Certain studies have investigated biochemical parameters to facilitate the diagnosis of exudative pleural effusion; however, it remains a challenging problem in clinical practice. We aimed to investigate the potential role of the neutrophil-lymphocyte ratio, which can be easily obtained by determining the cell count of the pleural fluid, in the differential diagnosis of exudative pleural effusion. METHODS: Records from patients who underwent thoracentesis and pleural fluid analysis between May 1, 2013, and March 1, 2015, were obtained from the electronic database of our hospital. The patients who met the inclusion criteria were divided into five groups according to their diagnosis: malignant pleural effusion, para-malignant pleural effusion, para-pneumonic effusion, tuberculosis-related effusion or other. The neutrophil-lymphocyte ratio value was calculated by dividing the absolute neutrophil count by the absolute lymphocyte count. The patient groups were compared according to the given parameter. RESULTS: A total of 465 patients who met the inclusion criteria among 1616 patients with exudative pleural effusion were included in the study. The mean neutrophil-lymphocyte ratio value was significantly lower in tuberculosis-related pleural effusion compared to malignant, para-pneumonic and para-malignant effusions (p=0.001, p=0.001, p=0.012, respectively). The areas under the curve for tuberculosis pleurisy compared to malignant, para-pneumonic and para-malignant effusions were 0.38, 0.36, and 0.37, respectively. Lower cut-off values had higher sensitivity but lower specificity for tuberculosis pleurisy, while higher cut-off values had higher specificity but lower sensitivity for this condition. CONCLUSION: The pleural fluid neutrophil-lymphocyte ratio, which is an inexpensive, reproducible, and easily calculated hematological parameter, may facilitate the differential diagnosis of pleural effusion.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Linfócitos , Neutrófilos , Derrame Pleural/sangue , Derrame Pleural/diagnóstico , Biomarcadores/sangue , Diagnóstico Diferencial , Exsudatos e Transudatos , Contagem de Leucócitos , Padrões de Referência , Valores de Referência , Reprodutibilidade dos Testes , Estudos Retrospectivos , Sensibilidade e Especificidade , Estatísticas não Paramétricas
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