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1.
Gac Med Mex ; 154(1): 74-79, 2018.
Artigo em Espanhol | MEDLINE | ID: mdl-29420529

RESUMO

Objective: We investigated the proportion of Vß T cell receptor (TCR) gene expression in peripheral CD3+ lymphocytes in familial and non-familial systemic lupus erythematosus (SLE) patients. Method: The Vß TCR repertoire was studied in 14 families in which several members had SLE. The Vß TCR usage in SLE patients (n = 27) was compared with that in healthy members of these multiplex families (n = 47), in 37 sporadic SLE patients who had no relatives with SLE, and in 15 healthy unrelated controls. Vß TCR repertoire expression was studied by multiparameter flow cytometry with the use of an array of 24 different Vß TCR gene family-specific monoclonal antibodies. Results: We found the same Vß TCR expression profile in the comparisons between sporadic SLE and familial SLE cases and healthy relatives, which included increased expression of Vß 5.2, Vß 11 and Vß 16, and lower expression of Vß 3, Vß 4, Vß 7.1 and Vß 17. Interestingly, solely Vß 17 was differentially expressed among sporadic and familial SLE. Also, increased expression of Vß 9 was the hallmark among familial SLE (casesand h ealthy relatives) in comparison to controls. Conclusion: These results highlight the notion that the final profile of the Vß TCR repertoire seen in familial and non-familial SLE seems to arise from the interaction of genetic, environmental, and immunoregulatory factors. Furthermore, it may contribute to the immunologic abnormalities affecting relatives of SLE patients.


Objetivo: Se investigó la proporción de la expresión génica del receptor variable beta de células T (Vß TCR) en linfocitos periféricos CD3+ en pacientes con lupus eritematoso generalizado (LEG) familiar y no familiar. Método: El repertorio de Vß TCR se estudió en 14 familias que presentaban más de un miembro con LEG. El uso de Vß TCR en pacientes con LEG (n = 27) se comparó con el de los miembros sanos de estas familias (n = 47), con 37 pacientes con LEG esporádico y con 15 controles sanos. La expresión del repertorio de Vß TCR se estudió por citometría de flujo multiparamétrica utilizando un arreglo de 24 diferentes anticuerpos monoclonales específicos de genes familiares para Vß TCR. Resultados: Se encontró el mismo perfil de expresión en las comparaciones entre los casos de LEG esporádico y familiar, así como en los consanguíneos sanos de las familias multicasos, que incluía una expresión incrementada de Vß 5.2, Vß 11 y Vß 16, y una menor expresión de Vß 3, Vß4, Vß 7.1 y Vß 7. De manera interesante, solo Vß 17 se expresó de modo diferente entre casos familiares y esporádicos de LEG. Igualmente, la expresión incrementada de Vß 9 fue el distintivo entre los casos de LEG familiar (casos y consanguíneos sanos) y los controles sanos. Conclusiones: Estos resultados refuerzan la noción de que el perfil final del repertorio Vß TCR observado en LEG familiar y no familiar parece surgir de la interacción de factores genéticos, ambientales e inmunorreguladores, además de que pueden explicar las alteraciones inmunitarias que se observan en los consanguíneos sanos de pacientes con LEG.


Assuntos
Genes Codificadores da Cadeia beta de Receptores de Linfócitos T , Lúpus Eritematoso Sistêmico/sangue , Linfócitos T , Estudos de Casos e Controles , Feminino , Genes Codificadores da Cadeia beta de Receptores de Linfócitos T/genética , Humanos , Lúpus Eritematoso Sistêmico/genética , Masculino
2.
Rev. med. Risaralda ; 22(2): 79-82, jul.-dic. 2016.
Artigo em Espanhol | LILACS | ID: lil-786677

RESUMO

Introducción. La agudeza visual se considera como un parámetro visualhabitual que se emplea para evaluar la salud ocular y sirve para detectaralteraciones a bajo costo y reducir la ceguera prevenible o curable. Objetivo.Identificar las alteraciones de la agudeza visual normal, discapacidad moderada o severa y ceguera en los estudiantes de medicina que se encuentran a la mitad de la carrera a través de la toma de agudeza visual. Método. Se utilizó un diseño no experimental, descriptivo, observacional, transversal prospectivo. La muestra se conformó por 308 alumnos de la Universidad Popular Autónoma del Estado de Puebla de la carrera de Medicina que cumplían con los criterios de inclusión. Se aplicó un cuestionario el cual incluía antecedentes personales oftalmológicos y sintomatología oftálmica y se realizó la prueba de agudeza visual con la cartilla de snellen. Resultados. El 88.31 porciento tuvieron una agudeza visual normal, 11.68 porciento de los alumnos presentó déficit de la agudeza visual delos cuales la discapacidad visual moderada se presentó en un 10.71 porciento en el ojo derecho y en un 11.03 porciento en el ojo izquierdo, la categoría de discapacidad severa el porcentaje presentado fue menor al 1% en ambos ojos. Conclusión. En esta universidad la mayoría de los alumnos se encuentran visualmente normales, pero existe la necesidad de establecer programas continuos que permitan ir identificando a aquellos alumnos que han disminuido su agudeza visual para evitar que no se reduzca el aprendizaje y desarrollo de destrezas propias de la carrera de Medicina.


Assuntos
Humanos , Acuidade Visual , Cegueira , Estudantes de Medicina
3.
Medisur ; 14(5): 573-578, sep.-oct. 2016.
Artigo em Espanhol | LILACS | ID: biblio-829216

RESUMO

El hematoma paravesical espontáneo es una complicación infrecuente, con pocos casos reportados en la literatura. Aproximadamente el 2 % de los pacientes que se traten con enoxaparina profiláctica tendrán complicaciones hemorrágicas, de las cuales el 20 % son hematomas retroperitoneales o intracraneales, en dependencia de los factores de riesgo. Por tales razones se presenta el caso de un paciente de 35 años de edad, previamente sano, que fue sometido a una sutura de tendón de Aquiles después de sufrir un trauma, al que se le administró profilácticamente una sola dosis de enoxaparina en el posoperatorio inmediato y 24 horas después comenzó a quejarse de dolor en fosa iliaca derecha y disuria. El ultrasonido abdominal demostró un hematoma paravesical, que fue confirmado por topografía. Se manejó conservadoramente con sonda intravesical por diez días. Se realizó seguimiento del paciente, sin que se encontraran secuelas. Los autores infieren que el sangrado fue secundario a una sobredistensión vesical secundaria a la anestesia que provocó el sangrado de la pared de la vejiga. Este reporte demuestra que la enoxaparina profiláctica puede causar hematomas paravesicales espontáneos asociados a la sobredistención vesical. Sin embargo son necesarios otros reportes similares para confirmar lo anteriormente planteado.


Spontaneous paravesical hematoma is an infrequent complication, with a few reported cases in literature. Approximately 2 % of the patients treated with prophylactic enoxoparin will have hemorrhagic complications, from which 2 0% are retroperitoneal or intracranial hematomas depending on the risk factors. For such reasons it is presented a 35 year old patient, previously healthy, who was performed to a suture of the Achilles tendon after suffering a trauma. He was administered prophylactically a single doses of enoxoparin in the immediate post surgery and 24 hours later he started to complain of pain in the right lower quadrant and dysuria. Abdominal ultrasound showed a paravesical hematoma secondary to anesthesia which caused bleeding of the vesicle walls. This report shows prophylactic exoparin may produce spontaneous paravesical hematomas associated to vesical overdistention. However it is necessary other similar reports to confirm the previous statement.

4.
Arch. méd. Camaguey ; 20(3): 262-270, mayo.-jun. 2016.
Artigo em Espanhol | LILACS | ID: lil-787221

RESUMO

Fundamento: la evaluación de la calidad de vida relacionada con la salud, ha adquirido cada vez más importancia en la práctica de la medicina como indicador reflejo de la calidad de los diferentes tratamientos y sus resultados. En pacientes con enfermedad renal crónica terminal, la hemodiálisis como terapia de reemplazo renal mejora la sobrevida, pero no lo que la persona considera como calidad de vida. Objetivo: establecer el nivel de calidad de vida en pacientes con enfermedad renal crónica bajo hemodiálisis y el área (salud física, psicológica, relaciones sociales, ambiente) en la que presenta niveles bajos. Métodos: se utilizó un diseño no experimental, transversal, descriptivo. Se realizó un muestreo no probabilístico por conveniencia, que incluyó a 67 pacientes con enfermedad crónica terminal, inscritos en la unidad de hemodiálisis de un hospital público de la ciudad de Puebla. Se les aplicó el instrumento Whoqol-bref, para luego ordenar la información en Excel, se recurrió al programa SPSS para realizar pruebas estadísticas. Resultados: la calidad de vida de los pacientes bajo tratamiento de reemplazo renal con hemodiálisis tuvo una calidad baja (23, 88 %) y media (76, 12 %). El dominio menos afectado es el psicológico con 67, 01 puntos y el mayor es el físico con 60, 76. El dominio relacionado con la calidad de vida fue las relaciones sociales (p=0.000). Conclusiones: los pacientes en hemodiálisis presentan una calidad de vida media-baja y el área más afectada es la física, pero existe mayor correlación con las relaciones sociales, a mejor relación social mejor calidad de vida percibe el paciente.


Introduction: the evaluation of the quality of life related to health has assumed importance in the practice of medicine, as an indicator of the different treatments’ qualities and their results. In patients with end-stage chronic kidney disease, hemodialysis as a kidney replacement therapy improves survival, but not necessarily what the person thinks about quality of life. Objective: to establish the level of quality of life in patients with chronic kidney disease on hemodialysis and the area (physical, psychological health, social relations, the environment) in which low levels are presented. Methods: a non-experimental, transversal, and descriptive design was used. A non-probabilistic sample of convenience was carried out. The study was composed of 67 patients with end-stage chronic kidney disease, admitted in a hemodialysis unit of a public hospital in Puebla. Whogol-bref instrument was applied to them. Information was ordered in Excel and SPSS program was used to do statistical tests. Results: patients with kidney replacement treatment on hemodialysis had a low quality of life 23, 88 % and a medium 76, 12 %. The less affected domain was the psychological with 67, 01 points and the most affected one was the physical with 60, 76 %. The domain strongly related to quality of life was social relations (p=0, 000). Conclusion: patients on hemodialysis have a middle-low quality of life and the most affected area is physical. However, there is more correlation with social relations. The better social relation is, the better quality of life the patient gains.

5.
Duazary ; 13(2): 119-125, 2016. tab
Artigo em Espanhol | COLNAL, LILACS | ID: biblio-988491

RESUMO

El síndrome de fragilidad en el adulto mayor implica presentar eventos adversos, mayor necesidad de cuidados, mayor riesgo de evolucionar hacia la discapacidad, dependencia y muerte. El objetivo de la investigación fue determinar el número de adultos mayores que presentan síndrome de fragilidad y el factor más determinante, en una población rural del estado de Puebla, México. Se realizó un estudio descriptivo, observacional, transversal, prospectivo. La muestra estuvo conformada por 200 pacientes mayores de 65 años de edad, registrados en el centro de salud de la comunidad en estudio. Los datos fueron recolectados a través de la aplicación de la escala geriátrica y se aplicaron los criterios cubanos de fragilidad. De los adultos mayores incluidos 52.5% fueron femeninos y 47.5 masculinos. La prevalencia del síndrome de fragilidad fue del 45%, siendo mayor en mujeres. Como factor asociado se encontraron las alteraciones en la movilidad y el equilibrio con un 26.5%. Se concluye que existe una alta prevalencia de adultos mayores frágiles en una comunidad rural de Puebla, México; las alteraciones en la movilidad y el equilibrio son el principal factor detonante, debido a las actividades cotidianas que predominan en las zonas rurales latinoamericanas.


Syndrome of frailty in the elderly, involves presenting adverse events, most in need of care, increased risk of progression to disability, dependency and death. The objective of the research was to determine the number of older adults presenting fragility syndrome and the most determining factor in a rural population of the State of Puebla, Mexico. A descriptive, observational, cross-sectional, prospective study was conducted. The sample was composed of 200 patients over 65 years of age, registered in the study community health center. Data was collected through the application of the geriatric scale and fragility of Cuban criteria were applied. Including older adults 52.5% were female and 47.5 male. The prevalence of fragility Syndrome was 45%, being higher in women. As associated factor found alterations in mobility and balance with a 26.5%. It is concluded that there is a high prevalence of fragile seniors in a rural community in Puebla, Mexico; alterations in mobility and balance are the main detonating factor, due to activities of daily living that predominate in Latin American rural areas.


Assuntos
Idoso , Fragilidade , Idoso
6.
Acta Haematol ; 134(2): 119-24, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25925695

RESUMO

Admission to the intensive care unit (ICU) of a patient who has been grafted with hematopoietic stem cells is a serious event, but the role of the ICU in this setting remains controversial. Data were analyzed from patients who underwent autologous or allogeneic bone marrow transplantation at the Centro de Hematología y Medicina Interna de Puebla, México, between May 1993 and October 2014. In total, 339 patients were grafted: 150 autografts and 189 allografts; 68 of the grafted patients (20%) were admitted to the ICU after transplantation: 27% of the allografted and 11% of the autografted patients (p = 0.2). Two of 17 autografted patients (12%) and 5 of 51 allografted patients (10%) survived. All patients who required insertion of an endotracheal tube died, whereas 7 of 11 patients without invasive mechanical ventilation survived (p = 0.001). Only 10% of the grafted patients survived their stay in the ICU; this figure is lower than those reported from other centers and may reflect several facts, varying from the quality of the ICU support to ICU admission criteria to the initial management of all the grafts in an outpatient setting, which could somehow delay the arrival of patients to the hospital.


Assuntos
Doença Enxerto-Hospedeiro/diagnóstico , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Insuficiência Respiratória/diagnóstico , Sepse/diagnóstico , Adolescente , Adulto , Feminino , Doença Enxerto-Hospedeiro/epidemiologia , Doença Enxerto-Hospedeiro/etiologia , Doença Enxerto-Hospedeiro/terapia , Hospitais Universitários , Humanos , Lactente , Unidades de Terapia Intensiva , Masculino , México/epidemiologia , Pessoa de Meia-Idade , Ambulatório Hospitalar , Prognóstico , Insuficiência Respiratória/epidemiologia , Insuficiência Respiratória/etiologia , Insuficiência Respiratória/terapia , Risco , Sepse/epidemiologia , Sepse/etiologia , Sepse/terapia , Análise de Sobrevida , Transplante Autólogo/efeitos adversos , Transplante Homólogo/efeitos adversos
7.
Rev. Fac. Med. (Bogotá) ; 63(1): 87-92, ene.-mar. 2015. ilus, tab
Artigo em Espanhol | LILACS | ID: biblio-956732

RESUMO

Antecedentes. Las tendencias de obesidad y sobrepeso en México muestran un significativo incremento en las últimas encuestas nacionales. Esto se ve reflejado en el incremento de las enfermedades crónicas no transmisibles, además de un mayor consumo de agentes para pérdida de peso. Objetivo. Encontrar la relación entre el consumo de productos adelgazantes, el sobrepeso y la obesidad en profesores de una universidad privada de Puebla, México. Materiales y métodos. Se realizó un diseño no experimental, transversal descriptivo, utilizando un muestreo probabilístico aleatorio simple, en el que participaron 100 profesionistas; 27 hombres y 73 mujeres. Se aplicó un cuestionario para conocer los hábitos, el consumo de agentes para pérdida de peso, además de mostrárseles modelos anatómicos que determinaron la percepción de la persona con su cuerpo. Finalmente se realizó la medición antropométrica y se obtuvo el cálculo de su índice de masa corporal (IMC). Resultados. El 45% de las personas involucradas presentan sobrepeso y obesidad.38% consumen productos para bajar de peso; de estos, 84,2% eran mujeres. Entre mayor índice de masa corporal (IMC) mayor consumo de productos para bajar de peso (p<0.05). Se observa una relación inversa entre mayor obesidad y menor número de comidas al día, a la par con un menor número de horas de ejercicio. Finalmente, la mayoría de las personas con sobrepeso se perciben con un IMC mayor. Conclusión. El consumo de agentes para pérdida de peso se relaciona con el incremento del sobrepeso y la obesidad en los profesionistas.


Background. Current tendencies in obesity and overweight in México shows a significant increase in the last National Nutrition and Health Surveys, which is reflected in the rise of chronic non-transmissible diseases and an increase of anti-obesity drugs. Objective. Find the relationship between the consumption of anti-obesity drugs, overweight and obesity in teachers at a private university of Puebla city, in Mexico. Materials and methods. This is a non-experimental, cross-sectional descriptive design, where a simple random probability sampling was used. 100 professional workers at a private university of Puebla city participated, 27 men and 73 women. It was applied a test to each one of them, in order to identify their habits and consume of anti-obesity drugs. Anatomical models were presented to the participants to determinate their self-perception of body image. Finally anthropometric measures were done and body mass index was calculated. Results. 45% of participants presented overweight and obesity; 38% consume anti-obesity drugs, of these, 84.2% are women. It was observed that higher body mass index (BMI) gives a higher consume of anti-obesity drugs (p<0.05). It was determined an inversed relationship between a higher obesity degree and a lower number of meals a day, correlated also with a lower number of exercise hours. Finally people with a healthy BMI, have adequate self-perception of body image and the majority of people with overweight, perceived themselves with a higher BMI. Conclusions. The consumption of anti-obesity drugs is related to the increase of overweight and obesity in professional workers.

8.
Arch Gynecol Obstet ; 290(4): 791-6, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25027813

RESUMO

BACKGROUND: The Sertoli and Leydig cell tumor is an unusual neoplasm that belongs to the sex cord-stromal tumors. Generally these tumors are associated with good prognosis. These tumors usually present virilizing symptoms such as oligomenorrhea or amenorrhea, hirsutism, voice raucity, laryngeal protuberance and clitoromegaly. CASE PRESENTATION: A 12 year old girl referred acute abdominal pain with no other clinical manifestations. An abdominal ultrasound showed a semisolid mass suggestive of ovarian tumor. The diagnosis was confirmed by a computed tomography. A unilateral salpingo oophorectomy was performed and the pathologist reported a Sertoli-Leydig tumor with intermediate differentiation. The outcome was excellent. CONCLUSIONS: These tumors represent a rare condition in children. However, they can occur at any age, therefore it is important to acknowledge the clinical manifestations, diagnostic approach and therapeutic options. In this case the patient presented unusual symptoms which makes it more interesting.


Assuntos
Neoplasias Ovarianas/patologia , Tumor de Células de Sertoli-Leydig/patologia , Dor Abdominal/etiologia , Criança , Feminino , Humanos , Neoplasias Ovarianas/cirurgia , Ovariectomia , Salpingectomia , Tumor de Células de Sertoli-Leydig/cirurgia
9.
Braz J Microbiol ; 44(1): 287-9, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24159318

RESUMO

The quantification of colony forming units (cfu), turbidity, and optical density at 600 nm (OD600) measurements were used to evaluate Mycobacterium tuberculosis growth. Turbidity and OD600 measurements displayed similar growth curves, while cfu quantification showed a continuous growth curve. We determined the cfu equivalents to McFarland and OD600 units.

10.
Inmunología (1987) ; 32(1): 12-16, ene.-mar. 2013. tab
Artigo em Inglês | IBECS | ID: ibc-110480

RESUMO

Several studies have shown that HIV patients tend to develop autoimmune diseases, and have numerous antibodies, such as antiphospholipid antibodies. Antiphospholipid antibodies are the serological markers used in the diagnosis of the antiphospholipid syndrome. However, antiphospholipid antibodies also appear to exist in infectious diseases. Objective: TomeasurethetitersofantiphospholipidantibodiesinhealthyandinHIVpositiveMexican mestizo patients, and correlate them with the patient clinical manifestations to identify possible findings compatible with an autoimmune disease. Material and methods: A case control study was conducted on 50 healthy mixed race Mexican subjects andin50 randomly selectedHIV-positive patients from the (..) (AU)


Varios estudios han demostrado que los pacientes con VIH tienden a desarrollar enfermedades autoinmunes, presentando diversos anticuerpos como los anticuerpos antifosfolípidos. Los anticuerpos antifosfolípido son los marcadores serológicos que se emplean en el diagnóstico del síndrome antifosfolípido. Sin embargo los anticuerpos antifosfolípido también suelen existir en enfermedades infecciosas específicas. Objetivo: Medir los títulos de anticuerpos antifosfolípido en pacientes mexicanos mestizos sanos y VIH positivos y correlacionarlos con las manifestaciones clínicas de los pacientes para identificar posibles hallazgos compatibles con alguna enfermedad autoinmune. Material y métodos: Se trata de un estudio de casos y controles en el que se evaluaron (..) (AU)


Assuntos
Humanos , Anticorpos Antifosfolipídeos/isolamento & purificação , Infecções por HIV/imunologia , Soropositividade para HIV/imunologia , Anticorpos Anticardiolipina/isolamento & purificação
11.
Artigo em Inglês | LILACS-Express | LILACS, VETINDEX | ID: biblio-1469587

RESUMO

The quantification of colony forming units (cfu), turbidity, and optical density at 600 nm (OD600) measurements were used to evaluate Mycobacterium tuberculosis growth. Turbidity and OD600 measurements displayed similar growth curves, while cfu quantification showed a continuous growth curve. We determined the cfu equivalents to McFarland and OD600 units.

12.
Transfusion ; 46(4): 530-6, 2006 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-16584428

RESUMO

BACKGROUND: The information regarding the minimum number of CD34+ cells that are necessary to reconstitute hematopoiesis in patients undergoing peripheral blood progenitor cell transplantation is quite controversial. Some of the differences in these figures might be due to the selection of antibodies, staining protocols, and acquisition strategies for the flow cytometric enumeration of these cells. STUDY DESIGN AND METHODS: Twenty-seven human umbilical cord blood samples and 33 leukapheresis products were consecutively collected for this study. Cells were stained following two different protocols, both using monoclonal antibodies to CD45 and CD34, and analyzed by the same operator in two different flow cytometers to enumerate the percentage of CD34+ mononuclear cells. RESULTS: Relevant differences in the proportion of cells were encountered, and the correlation between the results yielded by both instruments and protocols, although statistically valid, was suboptimal. CONCLUSIONS: Both interinstrument and interprotocol variation can provide additional explanation for the redundantly reported discrepancies concerning the numbers of CD34 cells that suffice to secure hemopoietic grafting. These results point to the need for new and different standardization approaches in this clinically relevant field.


Assuntos
Antígenos CD34/sangue , Sangue Fetal/citologia , Células-Tronco Hematopoéticas/citologia , Antígenos CD/sangue , Separação Celular/métodos , Corantes , Citometria de Fluxo/métodos , Citometria de Fluxo/normas , Células-Tronco Hematopoéticas/imunologia , Humanos , Recém-Nascido , Reprodutibilidade dos Testes
13.
Cytometry B Clin Cytom ; 70(1): 39-44, 2006 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16353215

RESUMO

On May 3 and 4, 2005, the Second Latin American Consensus Conference for the Immunophenotyping of Hematological Malignancies took place in Queretaro, México, with representatives from 10 countries of the region and two external consultants. This document summarizes the major conclusions for which consensus were achieved. Major differences regarding the recommendations from the first conference, which took place 9 years ago, concern the medical indications and the antibody panels for immunophenotyping. The aim of disseminating these guidelines to the international community is based on the potential interest for other countries with similar socioeconomic conditions.


Assuntos
Citometria de Fluxo/métodos , Neoplasias Hematológicas/metabolismo , Imunofenotipagem/métodos , Anticorpos Monoclonais/imunologia , Coleta de Dados , Corantes Fluorescentes/análise , Neoplasias Hematológicas/imunologia
14.
J Autoimmun ; 26(1): 52-6, 2006 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-16368224

RESUMO

It has been previously shown that certain antibodies to double stranded-DNA are capable to transgress the cell membrane, translocate to the cell nucleus and react with their antigens. When so doing, they signal the penetrated cells to undergo apoptosis. In this study we dissected the two main-streams of apoptotic triggering and found that the neglect, mitochondrial pathway, is definitely involved, but activation of caspases 2 and 8, classically known to be associated to the membrane pathway, also occurs in a small proportion of cells. Our results suggest that penetrating anti-dsDNA antibodies, besides activating neglect apoptosis, may also trigger programmed cell death, perhaps initiated at the cell membrane level.


Assuntos
Anticorpos Antinucleares/farmacologia , Proteínas Reguladoras de Apoptose/metabolismo , Apoptose , Membrana Celular/efeitos dos fármacos , Mitocôndrias/efeitos dos fármacos , Anticorpos Monoclonais/farmacologia , Proteínas Reguladoras de Apoptose/análise , Membrana Celular/metabolismo , Fragmentação do DNA , Humanos , Células Jurkat , Leucócitos Mononucleares/química , Leucócitos Mononucleares/efeitos dos fármacos , Mitocôndrias/metabolismo
15.
Curr Pharm Des ; 9(23): 1881-7, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-12871192

RESUMO

The dogmatic and at one time prevalent concept that intact antibody molecules were not able to enter into viable cells has now been modified due to the availability of a large amount of experimental findings and clinical observations that indicate otherwise. Penetration of mature autoantibodies into living cells might participate in the pathogenesis of diverse autoimmune diseases, through inducing apoptosis of healthy tissues and cells, but also by contributing to the breakdown of self-tolerance through presentation of self-antigens to the immune system. Conversely, the penetration of naturally occurring autoantibodies into immature lymphoid cells might have a physiological role in the edition of the immune repertoire in healthy individuals. Increasing interest is being paid to the potential immunotherapeutic role of penetrating antibodies as tools to deliver drugs, isotopes or genes into cells.


Assuntos
Autoanticorpos/imunologia , Doenças Autoimunes/terapia , Imunoglobulina G/imunologia , Animais , Apoptose , Autoantígenos , Doenças Autoimunes/imunologia , Doenças Autoimunes/patologia , Doenças Autoimunes/prevenção & controle , Transporte Biológico Ativo/fisiologia , Permeabilidade da Membrana Celular/efeitos dos fármacos , Permeabilidade da Membrana Celular/fisiologia , Humanos , Tolerância a Antígenos Próprios
16.
Rev. invest. clín ; 52(2): 118-24, mar.-abr. 2000. tab, graf, CD-ROM
Artigo em Espanhol | LILACS | ID: lil-292108

RESUMO

Empleando reacción en cadena de la polimerasa (PCR) se buscaron marcadores moleculares específicos en 75 pacientes consecutivos con leucemia aguda en una sola institución a lo largo de un periodo de cinco años. En leucemia aguda linfoblástica se buscaron BCR/ABL t (9:22), TEL-AML1, t (12:21) y rearreglos clonotípicos de los genes de inmunoglobulinas, en tanto que en leucemia aguda mieloblástica se buscaron PML-RARa t (15:17), AML1-ETO t (8:21) y CBFb-MYH11 (inv16). Se identificaron marcadores moleculares en 15 de 75 casos: cuatro LAL (tres rearreglos de Ig y uno BCR/ABL) y 11 LAM (9 PML/RARa y 2 AML1/ETO). A lo largo de seguimientos de 1 a 60 meses después de haber hecho el diagnóstico, en siete pacientes se eliminó la enfermedad residual evaluada por PCR (ER-PCR) y en ocho persistió. Para pacientes sin o con ER-PCR, la supervivencia (SV) a 30 meses fue de 86 por ciento y 14 por ciento, y la mediana de SV >60 y dos meses, respectivamente (p < 0.01). Seis de los ocho pacientes con ER-PCR fallecieron y en dos se pudo lograr una nueva remisión molecular. Dos de las tres recaídas moleculares pudieron detectarse antes de la recaída hematológica florida. Se concluye que la PCR es útil para vigilar la persistencia de ER en leucemia aguda y en ocasiones, para decidir los tratamientos antileucémicos de rescate, de manera oportuna.


Assuntos
Humanos , Masculino , Feminino , Pré-Escolar , Adolescente , Adulto , Pessoa de Meia-Idade , Leucemia/imunologia , Biomarcadores/sangue , Reação em Cadeia da Polimerase , Leucemia-Linfoma Linfoblástico de Células Precursoras/imunologia , Neoplasia Residual
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