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Hematol., Transfus. Cell Ther. (Impr.) ; 44(2): 213-217, Apr.-June 2022. tab
Article in English | LILACS | ID: biblio-1385057


ABSTRACT Introduction The pro-inflammatory immune response underlies severe cases of COVID-19. Antigens of the Duffy blood group systems are receptors for pro-inflammation chemokines. The ACKR1 c.-67T>C gene variation silences the expression of Duffy antigens on erythrocytes and individuals presenting this variant in homozygosity have impaired inflammatory response control. Our aim was to evaluate the association between the ACKR1 c.-67T>C and the severity of COVID-19. Methods This was a retrospective single-center case-control study, enrolling 164 participants who were divided into four groups: 1) Death: COVID-19 patients who died during hospitalization; 2) Hospital Discharge: COVID-19 patients who were discharged for home after hospitalizations; 3) Convalescent Plasma Donors: COVID-19 patients who were not hospitalized, and; 4) Controls: patients with diagnosis other than COVID-19. Patients were genotyped for the ACKR1 c.-67T>C (FY*02 N.01 allele) and the frequency of individuals presenting the altered allele was compared between the groups. Results The groups significantly differed in terms of the percentage of patients presenting at least one FY*02N.01 allele: 36.8% (Death group), 37% (Hospital Discharge group), 16.1% (Convalescent Plasma group) and 16.2% (Control group) (p= 0.027). The self-declared race (p < 0.001) and the occurrence of in hospital death (p= 0.058) were independently associated with the presence of the FY*02N.01 allele. Hypertension (p < 0.001), age (p < 0.001) and the presence of at least one FY*02N.01 allele (p= 0.009) were independently associated with the need for hospitalization. Conclusion There is a suggestive association between the presence of the FY*02N.01 and the severity of COVID-19. This may be a mechanism underlying the worse prognosis for Afro-descendants infected with SARS-CoV-2.

Humans , Male , Middle Aged , Duffy Blood-Group System , COVID-19 , Chemokines , Gene Frequency/genetics
Article in English | WPRIM | ID: wpr-929048


Ovarian cancer is the third-most-common malignant reproductive tumor in women. According to the American Cancer Society, it has the highest mortality rate of gynecological tumors. The five-year survival rate was only 29% during the period from 1975 to 2008 (Reid et al., 2017). In recent decades, the five-year survival rate of ovarian cancer has remained around 30% despite continuous improvements in surgery, chemotherapy, radiotherapy, and other therapeutic methods. However, because of the particularity of the volume and location of ovarian tissue, the early symptoms of ovarian cancer are hidden, and there is a lack of highly sensitive and specific screening methods. Most patients have advanced metastasis, including abdominal metastasis, when they are diagnosed (Reid et al., 2017). Therefore, exploring the mechanism of ovarian cancer metastasis and finding early preventive measures are key to improving the survival rate and reducing mortality caused by ovarian cancer.

B7-H1 Antigen/biosynthesis , Cell Proliferation/drug effects , Chemokines/biosynthesis , Female , Humans , Ovarian Neoplasms/pathology , Survival Rate , Up-Regulation
Arq. Asma, Alerg. Imunol ; 5(4): 361-370, out.dez.2021. ilus
Article in English, Portuguese | LILACS | ID: biblio-1399785


O corpo humano tende sempre a procurar um estado de homeostase, buscando o equilíbrio entre todos os sistemas. O exercício físico está presente na rotina diária de indivíduos, mesmo com objetivos diferentes, porém a influência no sistema imunológico não é muitas vezes abordada como fator relevante. O sistema imune é responsável por proteger o organismo contra infecções e doenças, podendo ser modulado perante a resposta de exercícios físicos regulares. Tendo em vista que, atualmente, existe uma preocupação maior em tornar e manter a imunidade eficiente, a prática regular e moderada do exercício pode contribuir para uma maior eficácia desse sistema, dessa forma, podendo ser considerada uma proteção ao corpo humano. O objetivo dessa revisão foi sintetizar os dados de estudos presentes na literatura que demonstram a influência do exercício físico na resposta do sistema imunológico, tornando possível compreender as alterações moleculares, fisiológicas, metabólicas e celulares que levam a um tipo específico de resposta do organismo humano.

The human body always tends to seek a homeostasis state, trying to balance all systems. Physical exercise is present in the routine of individuals even with different goals, but the influence in the immune system isnt a relevant factor. The immune system is responsible for protecting the human body against some infections and diseases, and could be modulated in response by some regular physical exercise. At the moment there is a greater concern to keep efficient immunity, a practice of regular and moderate exercise can contribute to a better effectiveness of this system, thus, it can be considered a form of protection to the human body. The objective of this review was to synthesize some data from any studies presented in the literature that demonstrate the influence of physical exercise on the immune system response. Making it possible to understand the molecular mechanisms, physiological, metabolic and cellular changes that turn to a specific type of response in the human body.

Humans , Exercise , Immune System , Immunity , Dendritic Cells , Immunoglobulins , Killer Cells, Natural , Lymphocytes , Monocytes , Cytokines , Human Body , Chemokines , Protective Factors , Endurance Training , Homeostasis , Leukocytes , Macrophages , Neutrophils
Arq. bras. cardiol ; 117(4): 715-725, Oct. 2021. tab, graf
Article in Portuguese | LILACS | ID: biblio-1345249


Resumo Fundamentos A L-carnitina (LC) tem muitos efeitos benéficos em animais diabéticos e humanos, mas seu efeito regulatório sobre a quemerina como uma citocina inflamatória e seu receptor no estado diabético são desconhecidos. Objetivos O presente estudo teve como objetivo investigar o efeito regulatório da LC na expressão do receptor semelhante ao de quimiocina 1 e quemerina (CMKLRI) em tecidos adiposo e cardíaco de camundongos diabéticos. Métodos Sessenta camundongos NMARI foram divididos em quatro grupos, incluindo controle, diabético, diabético + suplementação com LC e controle + suplementação com LC. O diabetes foi induzido pela alimentação dos animais com dieta hipercalórica por 5 semanas e injeção de estreptozotocina. Os animais foram tratados com 300 mg/kg de LC por 28 dias. Nos dias 7, 14 e 28 após o tratamento, os níveis de mRNA e proteína da quemerina e CMKLRI nos tecidos cardíacos e adiposos de animais foram determinados utilizando análise por qPCR e ELISA. Os índices de resistência à insulina também foram medidos em todos os grupos experimentais. A diferença com p<0,05 foi considerada significativa. Resultados A expressão de quemerina e CMKLRI aumentou nos tecidos cardíaco e adiposo de camundongos diabéticos nos dias 14 e 28 após a indução do diabetes, concomitantemente com a incidência de resistência à insulina e níveis aumentados de quemerina circulante (p<0,05). O tratamento com LC causou uma diminuição significativa na expressão de ambos os genes nos tecidos estudados e redução dos sintomas de resistência à insulina e dos níveis séricos de quemerina (p<0,05). Conclusão Os resultados sugerem que o tratamento com LC pode diminuir a expressão de quemerina e CKLR1 em tecidos cardíacos e adiposos de animais experimentais obesos e diabéticos.

Abstract Background L-carnitine (LC) has many beneficial effects on diabetic animals and humans, but its regulatory effect on chemerin as an inflammatory cytokine, and its receptor in diabetes status is unknown. Objectives The present study aimed to investigate the regulatory effect of LC on the expression of chemerin and chemokine-like receptor I (CMKLRI) in adipose and cardiac tissues of diabetic mice. Methods Sixty NMARI mice were divided into four groups including control, diabetic, diabetic + LC supplementation and control + LC supplementation. Diabetes was induced by feeding the animals a high-calorie diet for 5 weeks and injection of Streptozotocin. The animals were treated with 300 mg/kg LC for 28 days. On days 7, 14, and 28 after treatment, the mRNA and protein levels of chemerin and CMKLRI in the cardiac and adipose tissues of the animals were determined using qPCR analysis and ELISA. Insulin resistance indices were also measured in all experimental groups. Differences with p <0.05 were considered significant. Results Chemerin and CMKLRI expressions levels were increased in cardiac and adipose tissues of diabetic mice on days 14 and 28 after diabetes induction, concurrent with the incidence of insulin resistance and increased levels of circulating chemerin (p<0.05). The treatment with LC caused a significant decrease in the expression of both genes in studied tissues and the reduction of insulin resistance symptoms and serum chemerin levels (p<0.05). Conclusion The results suggest that LC treatment were able to downregulate the expression of chemerin and CKLR1 in cardiac and adipose tissues of obese, diabetic experimental animals.

Animals , Mice , Receptors, Chemokine , Diabetes Mellitus, Experimental/drug therapy , Carnitine/pharmacology , Chemokines , Intercellular Signaling Peptides and Proteins , Mice, Obese , Obesity/drug therapy
Arq. neuropsiquiatr ; 79(9): 789-794, Sept. 2021. tab
Article in English | LILACS | ID: biblio-1345328


Abstract Background: Migraines are headaches caused by changes in the trigeminovascular metabolic pathway. Migraine headache attacks are associated with neurovascular inflammation, but their pathophysiological mechanisms have not been fully explained. Objective: To investigate the relationship between serum vaspin, visfatin, chemerin and interleukin-18 (IL-18) levels and the frequency of attacks in migraine headache. Methods: Three groups were established: migraine with aura (n = 50), migraine without aura (n = 50) and control group (n = 50). The migraine diagnosis was made in accordance with the International Classification of Headache Disorders-III beta diagnostic criteria. The analyses on serum vaspin, visfatin, chemerin and IL-18 levels were performed using the enzyme-linked immunosorbent assay method. Results: The serum vaspin, visfatin, chemerin and IL-18 levels were found to be significantly higher in the migraine patients than in the control group (p < 0.01). No statistically significant differences in serum vaspin, visfatin, chemerin and IL-18 levels were found among the migraine patients during attacks or in the interictal period (p>0.05). The serum visfatin and chemerin levels of the migraine patients were positively correlated with their serum IL-18 levels (p < 0.01), while their serum chemerin and visfatin levels were positively correlated with their serum vaspin levels (p < 0.05). Conclusions: This study showed that these biomarkers may be related to migraine pathogenesis. Nonetheless, we believe that more comprehensive studies are needed in order to further understand the role of vaspin, visfatin, chemerin and IL-18 levels in the pathophysiology of migraine headaches.

Resumo Introdução: A migrânea é causada por alterações nas vias metabólicas do sistema trigeminovascular. Crises de migrânea estão associadas à inflamação neurovascular, mas seus mecanismos patofisiológicos ainda não são totalmente explicados. Objetivo: Investigar a relação entre níveis séricos de vaspina, visfatina, quemerina e interleucina-18 (IL-18) e a frequência de crises de migrânea. Métodos: Três grupos foram formados: migrânea com aura (n = 50), migrânea sem aura (n = 50) e grupo controle (n = 50). A migrânea foi diagnosticada de acordo com os critérios da Classificação Internacional das Cefaleias (ICHD-III). As análises dos níveis séricos de vaspina, visfatina, quemerina e IL-18 foram realizadas utilizando-se o método imunoenzimático (ELISA). Resultados: Os níveis séricos de vaspina, visfatina, quemerina e interleucina-18 (IL-18) foram significativamente mais elevados em pacientes com migrânea do que no grupo controle (p < 0.01). Nenhuma diferença estatisticamente significativa foi observada nos níveis séricos de vaspina, visfatina, quemerina e interleucina-18 (IL-18) entre os pacientes com migrânea durante crises ou no período interictal (p>0,05). Os níveis séricos de visfatina e quemerina em pacientes com migrânea se correlacionaram positivamente com os níveis séricos de IL-18 (p < 0,01), ao passo que os níveis séricos de quemerina e visfatina se correlacionaram positivamente com os níveis séricos de vaspina (p < 0,05). Conclusões: Este estudo demonstrou que estes biomarcadores podem estar relacionados à patogênese da migrânea. Contudo, acreditamos que estudos mais abrangentes são necessários a fim de melhor compreendermos o papel dos níveis de vaspina, visfatina, quemerina e IL-18 na fisiopatologia da migrânea.

Humans , Insulin Resistance , Serpins , Migraine Disorders , Chemokines , Interleukin-18 , Nicotinamide Phosphoribosyltransferase
Rev. cuba. hematol. inmunol. hemoter ; 37(1): e1101, ene.-mar. 2021. graf
Article in Spanish | LILACS, CUMED | ID: biblio-1251718


Introducción: Las quimiocinas son proteínas secretadas con tamaño en el rango de 8-10 kDa, con numerosas funciones en la fisiología normal y patológica. El término deriva de las palabras citocinas quimiotácticas, que refleja su importante participación en la quimioatracción de leucocitos. Sin embargo, las evidencias muestran que las quimiocinas tienen muchas otras funciones como la comunicación intercelular, la activación celular y la regulación del ciclo celular. Objetivo: Analizar los conocimientos actuales sobre las quimiocinas y sus receptores, y la significación clínica de estas en la medicina transfusional y el trasplante. Métodos: Se realizó revisión de la literatura, en inglés y español, a través del sitio web PubMed y el motor de búsqueda Google académico de artículos publicados en los últimos 10 años. Se efectuó análisis y resumen de la bibliografía revisada. Análisis y síntesis de la información: La transcripción de la mayoría de los genes de quimiocinas es inducible y se produce en respuesta a estímulos celulares específicos. Las quimiocinas son importantes en la movilización de células progenitoras hematopoyéticas para el trasplante y localización de células progenitoras hematopoyéticas trasplantadas. En los modelos de incompatibilidad ABO, las quimiocinas CXC y CC se producen en niveles elevados. Conclusiones: Muchas son las oportunidades de futuras investigaciones sobre las quimiocinas en la medicina transfusional por la considerable redundancia y superposición en la función biológica de estas moléculas y sus receptores. Son solo una parte de un proceso mucho más grande y complejo dentro de la red de citoquinas y otras moléculas del sistema inmune(AU)

Introduction: Chemokines are secreted proteins with size in the range of 8-10 kDa, with numerous functions in normal and pathological physiology. The term derives from the words chemotactic cytokines, reflecting its important role in the chemoattraction of leukocytes. However, the evidence shows that chemokines have many other functions such as intercellular communication, cell activation and cell cycle regulation. Objetive: To present current knowledge about chemokines and their receptors, and the clinical significance of these in transfusion medicine and transplantation. Method: A review of the literature was made, in English and Spanish, through the PubMed website and the Google academic search engine of articles published in the last 10 years. An analysis and summary of the revised bibliography was made. Developing: The transcription of most of the chemokine genes is inducible and occurs in response to specific cellular stimuli. Chemokines play an important role in the mobilization of hematopoietic progenitor cells for the transplantation and localization of transplanted hematopoietic progenitor cells. In the ABO incompatibility models, the CXC and CC chemokines are produced at high levels. Conclusions: There are many opportunities for future research on chemokines in transfusion medicine due to their considerable redundancy and superposition in the biological function of these molecules and their receptors. They are just one part of a much larger and more complex process within the network of cytokines and other molecules of the immune system(AU)

Humans , Cytokines , Chemokines , Transfusion Medicine , Immune System
Arq. neuropsiquiatr ; 79(3): 189-194, Mar. 2021. tab, graf
Article in English | LILACS | ID: biblio-1285337


ABSTRACT Background: Elevated levels of chemerin can predict future ischemic cerebrovascular disease. Although chemerin is thought to play a role in atherosclerotic inflammation, whether circulating chemerin levels are associated with the severity of atherosclerosis remains to be determined. Objectives: Through the use of carotid Doppler ultrasonography, our aim in this study was to investigate the relationships of serum chemerin levels with carotid intima-media thickness (CIMT) as an indicator of generalized atherosclerosis. Methods: This study compared 40 patients with ischemic stroke and 40 healthy subjects. Measurements were made at end-diastole using color Doppler ultrasonography (CDUS) after a 5-min rest interval in a quiet and dark room. CIMT was defined as the distance between the innermost edge of the luminal echo to the innermost edge of the media/adventitia echo. CIMT was measured in the posterior wall of both common carotid arteries within 1 cm proximally to the bulbus. Three measurements were made on both sides and the average measurement was taken as the CIMT. Serum chemerin levels were determined in all patients and healthy subjects. Results: Serum chemerin levels were significantly higher in the patient group than in the control group (p=0.004). Serum chemerin levels were positively correlated with CIMT (p<0.05). There was a significant difference between the groups with regard to CIMT (p<0.001). Conclusion: Elevated serum chemerin levels appear to be associated with CIMT, thus suggesting that a link exists between chemerin and atherosclerotic ischemic cerebrovascular disease.

RESUMO Introdução: Níveis elevados de chemerin podem prever doenças cerebrovasculares isquêmicas futuras. Embora se acredite que a chemerin desempenhe um papel na inflamação aterosclerótica, ainda não foi determinado se os níveis circulantes de chemerin estão associados à gravidade da aterosclerose Objetivos: Por meio do uso da ultrassonografia Doppler da carótida, nosso objetivo neste estudo foi investigar as relações dos níveis séricos de chemerin com a espessura da íntima-média da carótida (EIMC) como um indicador de aterosclerose generalizada. Métodos: Este estudo comparou 40 pacientes com AVC isquêmico e 40 indivíduos saudáveis. As medidas foram feitas no final da diástole usando ultrassonografia Doppler em cores (USDC), após um intervalo de descanso de 5 minutos em um quarto silencioso e escuro. A EIMC foi definida como a distância entre a borda mais interna do eco luminal e a borda mais interna do eco da mídia/adventícia. EIMC foi medido na parede posterior de ambas as artérias carótidas comuns dentro de 1 cm proximalmente ao bulbo. Três medições foram feitas em ambos os lados e a medição média foi tomada como o EIMC. Os níveis séricos de chemerin foram determinados em todos os pacientes e indivíduos saudáveis. Resultados: Os níveis séricos de chemerin foram significativamente maiores no grupo de pacientes do que no grupo controle (p=0,004). Os níveis séricos de chemerin foram positivamente correlacionados com EIMC (p<0,05). Houve diferença significativa entre os grupos em relação à EIMC (p<0,001). Conclusão: Níveis séricos elevados de chemerin parecem estar associados com a EIMC, sugerindo que existe uma ligação entre chemerin e doença cerebrovascular isquêmica aterosclerótica.

Humans , Carotid Artery Diseases/diagnostic imaging , Chemokines/blood , Atherosclerosis , Carotid Intima-Media Thickness , Carotid Arteries/diagnostic imaging , Risk Factors , Ultrasonography , Carotid Artery, Common/diagnostic imaging
Braz. j. infect. dis ; 25(2): 101575, 2021. tab
Article in English | LILACS | ID: biblio-1278579


ABSTRACT Introduction: Brazilian borreliosis (BB) disease is an infectious disease transmitted by ticks that mimics Lyme disease (LD) from the Northern Hemisphere. The BB clinical picture is characterized by a pathognomonic skin lesion (migratory erythema) and joint, neurological, cardiac and psychiatric symptoms. Innate and Th1/Th17 adaptive immunity seem to play an important role in the pathogenesis of Lyme disease. Objective: The aim of this study was to characterize the role of innate and Th1/Th17 adaptive immunity in BB patients with acute (<3 months) and convalescent (>3 months) disease. Methods: Fifty BB patients (28 with acute and 22 with convalescent disease) without treatment and 30 healthy subjects were evaluated. Levels of 20 cytokines or chemokines associated with innate and Th1/Th17 adaptive immunity were analyzed using Luminex (Millipore Corp., Billerica, MA). Results: Overall, BB patients had increased levels of IL-8 (6.29 vs 2.12 p = 0.002) and MIP-1α/CCL3 (5.20 vs 2.06, p = 0.030), associated with innate immunity, and MIP3B/CCL19 (Th1; 297.86 vs 212.41, p = 0.031) and IL-17A (Th17; 3.11 vs 2.20, p = 0.037), associated with adaptive immunity, compared with the levels of healthy controls. When comparing acute BB vs. convalescent BB subjects vs. healthy controls, IL-1β, IL-8 and MIP-1α/CCL3 (innate mediators) levels were highest in patients in the acute phase of disease (p < 0.05). TNF-α was associated with disseminated symptoms and with humoral reactivity against Borrelia burgdorferi. IL-10 was significantly correlated with IL-6 (r = 0.59, p = 0.003), IL-8 (r = 0.51, p < 0.001), MIP-1α/CCL3 (r = 0.42, p < 0.001) and MIP-3β/CCL19 (r = 0.40, p = 0.002) in all BB patients. Conclusions: This is the first study describing that innate and Th1/Th17 adaptive immunity play a crucial role in BB disease. Furthermore, innate mediators are particularly important in acute BB disease, and TNF-α is associated with evolution of BB symptoms.

Humans , Cytokines , Th17 Cells , Brazil , Chemokines , Adaptive Immunity , Immunity, Innate
Clinics ; 76: e1713, 2021. tab, graf
Article in English | LILACS | ID: biblio-1153987


OBJECTIVES: The chemokine ligand (CCL) 21 regulates the maturation, migration, and function of dendritic cells, and has been implicated in the pathogenesis of asthma. This study aimed to investigate the association between serum CCL21 levels and asthma control. METHODS: The serum levels of CCL21 and other inflammatory cytokines were analyzed in patients with asthma (n=44) and healthy controls (n=35) by enzyme-linked immunosorbent assay. IgE levels and eosinophil counts were determined by turbidimetric inhibition immunoassay and fully automatic blood analysis, respectively. The Asthma Control Test (ACT) questionnaire was used, and spirometry and fractional exhaled nitric oxide (FENO) measurements were performed. A multiple unpaired Student's t-test was performed to analyze the differences in CCL21 and interleukin levels between patients with asthma and healthy controls. The correlation of CCL21 levels with disease severity was evaluated using the Pearson's rank correlation test. RESULTS: Serum CCL21 levels were lower in patients with asthma (254.78±95.66 pg/mL) than in healthy controls (382.95±87.77 pg/mL) (p<0.001). Patients with asthma had significantly higher levels of IL-1β (19.74±16.77 vs. 2.63±5.22 pg/mL), IL-6 (7.55±8.65 vs. 2.37±2.47 pg/mL), and tumor necrosis factor-α (12.70±12.03 vs. 4.82±3.97 pg/mL) compared with the controls. CCL21 levels were positively correlated with the ACT score (rs=0.1653, p=0.0062), forced expiratory volume in 1s (FEV1)/forced vital capacity (rs=0.3607, p<0.0001), and FEV1 (rs=0.2753, p=0.0003), and negatively correlated with FENO (rs=0.1060, p=0.0310). CCL21 levels were negatively correlated with serum IgE levels (rs=0.1114, p=0.0268) and eosinophil counts (rs=0.3476, p<0.0001). CONCLUSIONS: Serum CCL21 levels may be a new biomarker for assessing asthma control.

Humans , Adult , Asthma , Chemokine CCL21/blood , Forced Expiratory Volume , Chemokines , Exhalation , Ligands , Nitric Oxide
Article in Chinese | WPRIM | ID: wpr-878709


Adipokines,the bioactive polypeptides secreted by adipose tissue,are related to the occurrence and development of obesity,metabolic syndrome,renal insufficiency,cardiovascular disease,diabetes mellitus and other diseases.They may be the disease intervention targets and a breakthrough in the study of disease pathogenesis.In this paper,we summarize the latest research progress of the adipokines omentin,chemerin and nesfatin.

Adipokines , Adipose Tissue , Chemokines , Cytokines , Humans , Kidney Diseases , Metabolic Syndrome , Obesity
Article in Chinese | WPRIM | ID: wpr-942291


OBJECTIVE@#To detect the serum level of soluble chemokines CXCL9 and CXCL10 in patients with rheumatoid arthritis (RA), and to analyze their correlation with bone erosion, as well as the clinical significance in RA.@*METHODS@#In the study, 105 cases of RA patients, 90 osteoarthritis (OA) patients and 25 healthy controls in Peking University People's Hospital were included. All the clinical information of the patients was collected, and the serum CXCL9 and CXCL10 levels of both patients and healthy controls were measured by enzyme-linked immune sorbent assay (ELISA). CXCL9 and CXCL10 levels among different groups were compared. The correlation between serum levels with clinical/laboratory parameters and the occurrence of bone erosion in RA were analyzed. Independent sample t test, Chi square test, Mann-Whitney U test, Spearman's rank correlation and Logistic regression were used for statistical analysis.@*RESULTS@#The levels of CXCL9 and CXCL10 were significantly higher in the RA patients [250.02 (126.98, 484.29) ng/L, 108.43 (55.16, 197.17) ng/L] than in the OA patients [165.05 (75.89, 266.37) ng/L, 69.00 (33.25, 104.74) ng/L] and the health controls [79.47 (38.22, 140.63) ng/L, 55.44 (18.76, 95.86) ng/L] (all P < 0.01). Spearman's correlation analysis showed that the level of serum CXCL9 was positively correlated with swollen joints (SJC), rheumatoid factor (RF) and disease activity score 28 (DAS28) (r=0.302, 0.285, 0.289; P=0.009, 0.015, 0.013). The level of serum CXCL10 was positively correlated with tender joints (TJC), SJC, C-reactive protein (CRP), immunoglobulin (Ig) A, IgM, RF, anti-cyclic citrullinated peptide antibody (ACPA), and DAS28 (r=0.339, 0.402, 0.269, 0.266, 0.345, 0.570, 0.540, 0.364; P=0.010, 0.002, 0.043, 0.045, 0.009, < 0.001, < 0.001, 0.006). Serum CXCL9 and CXCL10 levels in the RA patients with bone erosion were extremely higher than those without bone erosion [306.84 (234.02, 460.55) ng/L vs. 149.90 (75.88, 257.72) ng/L, 153.74 (89.50, 209.59) ng/L vs. 54.53 (26.30, 83.69) ng/L, respectively] (all P < 0.01). Logistic regression analysis showed that disease duration, DAS28 and serum level of CXCL9 were correlated with bone erosion in the RA patients (P < 0.05).@*CONCLUSION@#Serum levels of CXCL9 and CXCL10 were remarkably elevated in patients with RA, and correlated with disease activities and occurrence of bone erosion. Chemokines CXCL9 and CXCL10 might be involved in the pathogenesis and bone destruction in RA.

Arthralgia , Arthritis, Rheumatoid/complications , Chemokine CXCL10/blood , Chemokine CXCL9/blood , Chemokines , Humans , Osteoarthritis/complications
Article in English | WPRIM | ID: wpr-888489


OBJECTIVES@#To study the expression of adipokines in children with primary nephrotic syndrome (PNS) before and after treatment and its correlation with blood lipids, as well as the role of adipokines in PNS children with hyperlipidemia.@*METHODS@#A total of 90 children who were diagnosed with incipient PNS or recurrence of PNS after corticosteroid withdrawal for more than 6 months were enrolled as subjects. Thirty children who underwent physical examination were enrolled as the control group. Venous blood samples were collected from the children in the control group and the children with PNS before corticosteroid therapy (active stage) and after urinary protein clearance following 4 weeks of corticosteroid therapy (remission stage). ELISA was used to measure the levels of adipokines. An automatic biochemical analyzer was used to measure blood lipid levels.@*RESULTS@#Compared with the control group, the children with PNS had a significantly lower level of omentin-1 in both active and remission stages, and their level of omentin-1 in the active stage was significantly lower than that in the remission stage (@*CONCLUSIONS@#Omentin-1 may be associated with disease activity, dyslipidemia, and proteinuria in children with PNS. Blood lipid ratios may be more effective than traditional blood lipid parameters in monitoring early cardiovascular risk in children with PNS.

Adipokines , Chemokines , Child , Cytokines/metabolism , GPI-Linked Proteins/metabolism , Humans , Hyperlipidemias , Lectins/metabolism , Lipids , Nephrotic Syndrome/drug therapy , Proteinuria
J. bras. nefrol ; 42(3): 280-289, July-Sept. 2020. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1134858


ABSTRACT Introduction: Glomerular hyperfiltration may lead to proteinuria and chronic kidney disease in unilateral multicystic dysplastic kidney (MCDK). We aimed to investigate the urine neutrophil-gelatinase-associated lipocalin (NGAL), netrin-1, hepcidin, and C-C motif chemokine ligand-2 (MCP-1/CCL-2) levels in patients with MCDK. Methods: Thirty-two patients and 25 controls were included. The urine hepcidin, netrin-1, NGAL, and MCP-1/CCL-2 levels were determined by ELISA. Results: The patients had higher serum creatinine (Cr) levels, urine albumin, and netrin-1/Cr ratio with lower GFR. There were positive correlations between urine protein/Cr, MCP-1/CCL-2/Cr, and netrin-1 with NGAL (r = 0.397, p = 0.031; r = 0.437, p = 0.041, r = 0.323, p = 0.042, respectively). Urine netrin-1/Cr was positively correlated with MCP-1/CCL-2/Cr (r = 0.356, p = 0.045). There were positive associations between the presence of proteinuria and netrin-1/Cr, MCP-1/CCL-2/Cr, and NGAL/Cr [Odds ratio (OR): 1.423, p = 0.037, OR: 1.553, p = 0.033, OR: 2.112, p = 0.027, respectively)]. ROC curve analysis showed that netrin-1/Cr, MCP-1/CCL-2/Cr, and NGAL/Cr had high predictive values for determining proteinuria p = 0.027, p = 0.041, p = 0.035, respectively). Urine hepcidin/Cr was negatively correlated with tubular phosphorus reabsorption and was positively correlated with urine NGAL/Cr (r = -0.418, p = 0.019; r = 0.682, p = 0.000; respectively). Conclusions: MCP-1/CCL-2 may play a role in the development of proteinuria in MCDK. Netrin-1 may be a protective factor against proteinuria-induced renal injury. Urine hepcidin/Cr may reflect proximal tubule damage in MCDK. Urine NGAL/Cr may be a predictor of tubule damage by proteinuria.

Resumo Introdução: A hiperfiltração glomerular pode causar proteinúria e doença renal crônica no rim displásico multicístico unilateral (RDM). Nosso objetivo foi investigar os níveis de lipocalina associada à gelatinase neutrofílica na urina (NGAL), netrina-1, hepcidina e quimiocina C-C com ligante-2 (MCP-1/CCL-2) em pacientes com RDM. Métodos: Trinta e dois pacientes e 25 controles foram incluídos. Os níveis urinários de hepcidina, netrin-1, NGAL e MCP-1/CCL-2 foram determinados por ELISA. Resultados: Os pacientes apresentaram níveis séricos mais elevados de creatinina (Cr), albumina na urina e relação netrina-1/Cr com menor TFG. Houve correlação positiva entre proteína na urina/Cr, MCP-1/CCL-2/Cr e netrina-1 com NGAL (r = 0,397, p = 0,031; r = 0,437, p = 0,041, r = 0,323, p = 0,042, respectivamente). A netrina-1/Cr na urina foi correlacionada positivamente com MCP-1/CCL-2/Cr (r = 0,356, p = 0,045). Houve associações positivas entre a presença de proteinúria e netrina-1/Cr, MCP-1/CCL-2/Cr e NGAL/Cr [Odds ratio (OR): 1,423, p = 0,037, OR: 1,553, p = 0,033, OR: 2,112, p = 0,027, respectivamente) ]. A análise da curva ROC mostrou que netrina-1/Cr, MCP-1/CCL-2/Cr e NGAL/Cr apresentaram altos valores preditivos para determinar a proteinúria p = 0,027, p = 0,041, p = 0,035, respectivamente). A hepcidina/Cr na urina foi correlacionada negativamente com a reabsorção tubular de fósforo e positivamente com a NGAL/Cr na urina (r = -0,418, p = 0,019; r = 0,682, p = 0,000; respectivamente). Conclusões: MCP-1/CCL-2 pode ter participação no desenvolvimento de proteinúria no RDM. A Netrina-1 pode ser um fator protetor contra lesão renal induzida por proteinúria. Hepcidina/Cr na urina pode refletir danos em túbulos proximais no RDM. O valor de NGAL/Cr urinário pode ser um preditor de danos nos túbulos por proteinúria.

Humans , Female , Multicystic Dysplastic Kidney/metabolism , Biomarkers , Proto-Oncogene Proteins , Chemokines , Creatinine , Hepcidins , Lipocalin-2 , Netrin-1 , Ligands
Arq. Asma, Alerg. Imunol ; 4(2): 198-204, abr.jun.2020. ilus
Article in English | LILACS | ID: biblio-1381915


Introduction: Interferon-gamma (IFN-g) signaling is mediated by crosstalk of receptors, such as IFN-g receptor 1 (IFN-g R1), transcription factors, such as signal transducer and activator of transcription 1 (STAT1) and suppressors of cytokine signaling 1 (SOCS1). Here, we evaluated the role of IFN-g signaling in peripheral blood mononuclear cells (PBMCs) from asthma patients and control individuals. Methods: PBMCs from adult healthy nonasthmatic controls (n = 12; male and female, 18-60 years old) and patients diagnosed with asthma (n = 18; male and female, 18-60 years old) were stimulated with IFN-g (0.25, 0.5 and/or 1.0 ng/mL) and, after 24h, the production of CXC motif chemokine 10 (CXCL10) was evaluated (by enzyme linked immunosorbent assay) as well as the expression of IFN-g R1, STAT1 (both by flow cytometry assay) and SOCS1 (by real-time qPCR assay). Results: CXCL10 production was reduced in a dose-dependent manner in PBMCs from asthma patients stimulated with IFN-g when compared to control individuals. While IFN-g induced an increase in IFN-g R1 expression and phosphorylated STAT1 (pSTAT1) activation in PBMCs from the control group, a reduction in both IFN-g R1 and pSTAT1 was observed in PBMCs from asthma patients. IFN-g increased SOCS1 mRNA expression in PBMCs from asthma patients when compared to IFN-g-stimulated cells from control individuals. Conclusion: Taken together, our results demonstrated that IFN-g signaling is downregulated in asthma patients.

Introdução: A sinalização de interferon-gama (IFN-g) é mediada por receptores, como o receptor 1 de IFN-gama (IFN-gR1), fatores de transcrição, como o transdutor de sinal e o ativador de transcrição 1 (STAT1) e supressores de sinalização de citocina 1 (SOCS1). Neste trabalho, avaliamos o papel da sinalização de IFN-g em células mononucleares do sangue periférico (PBMCs) de indivíduos com asma e controle. Métodos: Células mononucleares do sangue periférico (PBMCs) de adultos saudáveis e não asmáticos (n = 12, homens e mulheres, 18-60 anos) e pacientes diagnosticados com asma (n = 18, homens e mulheres, 18-60 anos) foram estimuladas com IFN-g (0,25, 0,5 e/ou 1,0 ng/mL) e após 24 horas a produção de CXCL10 foi avaliada por ensaio de imunoabsorção enzimática (ELISA), bem como o receptor 1 de IFN-g (IFN-g R1). Também foram avaliadas as expressões do transdutor de sinal e ativador da transcrição 1 (STAT1) (por citometria de fluxo) e supressor de expressão de sinalização de citocinas 1 (SOCS1) (por ensaio qPCR em tempo real). Resultados: A produção de CXCL10, uma quimiocina induzida por IFNg, foi reduzida de maneira dependente da dose em PBMCs de pacientes com asma estimulados com IFN-g (0,25-1,0 ng/mL) quando comparado ao grupo controle. Enquanto IFN-g induziu um aumento da expressão de IFN-g R1 e ativação da fosforilação de STAT1 (pSTAT1) em PBMCs do grupo controle, uma redução de ambas (IFN-g R1 e pSTAT1) foi observada em PBMCs de pacientes com asma. O IFN-g aumentou as PBMCs de expressão do mRNA de SOCS1 de pacientes com asma quando comparado às células estimuladas por IFN-g do controle. Conclusão: Em conjunto, nossos resultados demonstraram que a sinalização de IFN-g é sub-regulada em pacientes com asma.

Humans , Adolescent , Adult , Middle Aged , Asthma , Interferon-gamma , Patients , RNA, Messenger , Enzyme-Linked Immunosorbent Assay , Cells , Control Groups , Cytokines , Chemokines , STAT1 Transcription Factor , Flow Cytometry
Rev. Assoc. Med. Bras. (1992) ; 66(3): 300-306, Mar. 2020. tab, graf
Article in English | LILACS, SES-SP | ID: biblio-1136211


SUMMARY OBJECTIVES To compare the serum concentrations of adipokines resistin and chemerin in children and adolescents with eutrophic and overweight and to evaluate their relationship with anthropometric, biochemical, and blood pressure variables. METHODS a cross-sectional epidemiological study was conducted with 234 students enrolled in public elementary schools in the city of Juiz de Fora / MG. Anthropometric evaluation, biochemistry, and blood pressure measurement were performed. Statistical analyzes included the Student-t or Mann-Whitney tests, Pearson or Spearman correlation, used according to the distribution of the variables, and linear regression analysis, by means of the evaluation of the effect of the independent variables on the serum levels of chemerin and resistin, adjusted for age and sex. For the data analysis, SPSS® software version 21.0 and STATA® version 10.1 were used, assuming a significance level of 5%. RESULTS the concentrations of chemerin were higher in eutrophic individuals than in those with excess weight (p> 0.05). In contrast, levels of resistin were higher in the young with excess weight than in the eutrophic ones (p <0.05). In the multiple linear regression analysis, the levels of chemerin were associated with the values of resistin, systolic, and diastolic blood pressure. Resistance levels maintained association only with BMI and chemerin values. CONCLUSION the adipokines analyzed presented a distinct profile in the groups of children and adolescents with eutrophic and overweight.

RESUMO OBJETIVOS Comparar as concentrações séricas das adipocinas resistina e quemerina em crianças e adolescentes com eutrofia e excesso de peso e avaliar sua relação com as variáveis antropométricas, bioquímicas e a pressão arterial. MÉTODOS Estudo epidemiológico transversal realizado com 234 estudantes matriculados em escolas públicas do ensino fundamental no município de Juiz de Fora/MG. Realizou-se avaliação antropométrica, bioquímica e aferição da pressão arterial. As análises estatísticas compreenderam os testes t de Student ou Mann-Whitney, correlação de Pearson ou Spearman, utilizados de acordo com a distribuição das variáveis, e análise de regressão linear, realizada por meio da avaliação do efeito das variáveis independentes nos níveis séricos de quemerina e resistina, ajustado por idade e sexo. Para a análise dos dados foram utilizados os softwares SPSS® versão 21.0 e Stata® versão 10.1, admitindo-se nível de significância de 5%. RESULTADOS As concentrações de quemerina foram maiores nos indivíduos eutróficos do que nos com excesso de peso (p>0,05). Em contrapartida, os níveis de resistina estiveram maiores nos jovens com excesso ponderal do que nos eutróficos (p<0,05). Na análise de regressão linear múltipla, os níveis de quemerina apresentaram associação com os valores de resistina, pressão arterial sistólica e diastólica. Os níveis de resistina mantiveram associação apenas com os valores de IMC e quemerina. CONCLUSÃO As adipocinas analisadas apresentaram perfil distinto nos grupos de crianças e adolescentes com eutrofia e com excesso de peso.

Humans , Male , Female , Child , Adolescent , Chemokines/blood , Overweight/blood , Adiponectin/blood , Resistin/blood , Anthropometry , Cross-Sectional Studies , Intercellular Signaling Peptides and Proteins , Overweight/complications , Overweight/metabolism , Adipokines
Article in English | WPRIM | ID: wpr-826302


Methylmercury is an environmental pollutant that causes neurotoxicity. Recent studies have reported that the ubiquitin-proteasome system is involved in defense against methylmercury toxicity through the degradation of proteins synthesizing the pyruvate. Mitochondrial accumulation of pyruvate can enhance methylmercury toxicity. In addition, methylmercury exposure induces several immune-related chemokines, specifically in the brain, and may cause neurotoxicity. This summary highlights several molecular mechanisms of methylmercury-induced neurotoxicity.

Animals , Chemokines , Metabolism , Humans , Methylmercury Compounds , Toxicity , Mice , Neurotoxins , Toxicity , Proteolysis , Rats , Saccharomyces cerevisiae
Article in Chinese | WPRIM | ID: wpr-781695


OBJECTIVE@#To study the changes in the serum levels of Chemerin and Omentin-1 in children with Kawasaki disease (KD) in the acute stage after intravenous immunoglobulin (IVIG) treatment and related clinical significance.@*METHODS@#A total of 60 children who were diagnosed with KD from January 2015 to April 2019 were enrolled as subjects. Forty healthy children and 40 children with acute infectious diseases were enrolled as the healthy control group and the infection control group respectively. According to the sensitivity to IVIG treatment, the children with KD were divided into an IVIG sensitive group with 51 children and a non-IVIG sensitive group with 9 children. According to the presence or absence of coronary artery lesion, the children with KD were divided into a CAL group with 13 children and a non-CAL group with 47 children. ELISA was used to measure the serum levels of Omentin-1 and Chemerin before and after the treatment.@*RESULTS@#The children with KD had significantly higher serum levels of Chemerin and Omentin-1 than the healthy control and infection control groups before treatment (P0.05). Before treatment, the non-IVIG sensitive group had a significantly higher serum level of Chemerin than the IVIG sensitive group (P0.05).@*CONCLUSIONS@#High serum levels of Chemerin and Omentin-1 may play an important role in the development and progression of KD. Chemerin may be involved in the development of CAL in children with KD. The serum level of Chemerin may be used as a new index for predicting the sensitivity to IVIG treatment.

Adipokines , Chemokines , Child , Coronary Artery Disease , Humans , Immunoglobulins, Intravenous , Mucocutaneous Lymph Node Syndrome
Article in Chinese | WPRIM | ID: wpr-942120


OBJECTIVE@#To elucidate the correlation between CKLF-like MARVEL transmembrane domain containing member 5 (CMTM5) gene and the risk of coronary artery disease (CAD), and to detect the effects of CMTM5 gene expression changes on the ability of adhesion and migration of THP-1 cells.@*METHODS@#Using case-control method, a total of 700 hospitalized patients in Shijitan Hospital were enrolled in this study. CAD were diagnosed by coronary angiography, which was defined as at least one blood vessel diameter stenosis ≥50% according to the result of coronary angiography. Reverse transcription-polymerase chain reaction (RT-PCR) method was used to detect CMTM5 gene expression; enzyme linked immunosorbent assay (ELISA) method to detect the plasma level of CMTM5; and Logistic regression to analyze CMTM5 genes and the risk of CAD. Human vascular endothelial cells (ECs) and THP-1 cells were cultivated, adhesion and Transwells experiments were used to evaluate the chemotactic capabi-lity of CMTM5 gene on THP-1 cells.@*RESULTS@#In this study, 350 CAD patients matched with 350 control patients were included. RT-PCR results revealed CMTM5 mRNA expression in CAD group was 3.45 times compared with control group, which was significantly higher than that in control group (P < 0.05). The levels of CMTM5 plasma protein in CAD group was (206.1±26.9) μg/L, which was significantly higher than that in control group (125.3±15.2) μg/L (P < 0.05). After adjusted for the risk factors of age, gender, BMI, smoking, hypertension, diabetes and hyperlipidemia, Logistic regression analysis results indicated that CMTM5 was the susceptibility factors of CAD, which still had significant correlation with CAD (P < 0.05). Adhesion and Transwells experiments results revealed that the numbers of adhesion and migration of THP-1 cells in CMTM5 overexpression ECs group (EO group) were significantly higher than that in lenti-mock infected ECs group (EO-MOCK group), non-infected ECs group (EN group), lenti-mock infected ECs group (ES-MOCK group), and CMTM5 suppression ECs group (ES group). On the contrary, the numbers of adhesion and migration of THP-1 cells in ES group were significantly lower than that in the other four groups (P < 0.01).@*CONCLUSION@#CMTM5 gene was closely related to the development of CAD. CMTM5 overexpression promoted the adhesion and migration of THP-1, which might play a part in the mechanisms of atherosclerosis and CAD.

Chemokines , Coronary Angiography , Coronary Artery Disease/genetics , Endothelial Cells , Humans , MARVEL Domain-Containing Proteins , Tumor Suppressor Proteins
Article in Chinese | WPRIM | ID: wpr-942086


OBJECTIVE@#To elucidate the correlation between CKLF-like marvel transmembrane domain containing member (CMTM5) gene and the risk of in-stent restenosis (ISR) with coronary artery disease (CAD) patients and to detect the effects and mechanisms of CMTM5-stimulated genes on human vascular endothelial cells (ECs) proliferation and migration.@*METHODS@#A total of 124 hospitalized patients in Shijitan Hospital were enrolled in this study. All the CAD patients were detected with platelet reactivity and grouped into two groups according to platelet reactivity; ISR was conformed by coronary angiography; RT-PCR method was used to detect CMTM5 gene expression; The CMTM5 over expression, reduction and control EC lines were established; Cell count, MTT, Brdu and flow cytometry methods were used to detect the proliferation of ECs, scratch and transwell experiments to test the migration of ECs, Western blot was used to detect signal path expressions.@*RESULTS@#CMTM5 gene expression in HAPR (High on aspirin platelet reactivity) group was 1.72 times compared with No-HAPR group, which was significantly higher than No-HAPR group. HAPR group ISR rate was 25.8% (8 cases), the incidence of No-HAPR ISR group was 9.7% (9 cases), and the results showed that in HAPR group, the incidence of ISR was significantly higher than that in No-HAPR group (P=0.04, OR=0.04, 95%CI=1.16-7.52), which showed that CMTM5 gene was significantly correlated with the risk of ISR. In HAPR group ISR rate was 25.8% (8 cases), the incidence of ISR in No-HAPR group was 9.7% (9 cases), and the results showed that the risk of ISR in HAPR group was significantly higher than that in No-HAPR group. All the results showed that CMTM5 was significantly correlated with the risk of ISR in CAD patients (P < 0.05). CMTM5 overexpression inhibited the proliferation and migration ability of ECs (P < 0.05), PI3K/Akt signaling pathways were involved in the role of regulation on ECs.@*CONCLUSION@#Our results revealed that CMTM5 gene was closely related with ISR, CMTM5 overexpression may repress ECs proliferation and migration through regulating PI3K-Akt signaling.

Chemokines , Coronary Artery Disease/surgery , Coronary Restenosis , Drug-Eluting Stents/adverse effects , Endothelial Cells , Humans , MARVEL Domain-Containing Proteins , Phosphatidylinositol 3-Kinases , Tumor Suppressor Proteins
Braz. j. med. biol. res ; 53(6): e9113, 2020. tab, graf
Article in English | LILACS, ColecionaSUS | ID: biblio-1132518


Chemerin is an adipokine that has been associated with components of metabolic syndrome. It has been described to affect adipocyte metabolism and inflammatory responses in adipose tissue, as well as the systemic metabolism of lipids and glucose. Few epidemiological studies have evaluated classical and genetics cardiovascular risk factors (CVRFs) in the mixed adult rural population in Brazil. Therefore, the present study explored possible associations between CVRFs and chemerin. This cross-sectional study included 508 adults from the rural localities of Lavras Novas, Chapada, and Santo Antônio do Salto in Ouro Preto, Minas Gerais, Southeast Brazil. Demographic, behavioral, clinical, biochemical, anthropometric variables, and 12 single nucleotide polymorphisms (SNPs) linked with metabolic syndrome phenotypes were evaluated for associations with chemerin level. There was a significant association of high triglyceride levels [odds ratio (OR)=1.91, 95%CI: 1.23−2.98], insulin resistance (OR=1.82, 95%CI: 1.03−3.22), age (OR=1.64, 95%CI: 1.08−2.49), and sex (OR=1.99, 95%CI: 1.35−2.95) with high levels of chemerin. High chemerin levels were significantly associated with the genetic polymorphisms rs693 in the APOB gene (OR=1.50, 95%CI: 1.03−2.19) and rs1799983 in the NOS3 gene (OR=1.46, 95%CI: 1.01−2.12) for the AA and GT+TT genotypes, respectively. In the concomitant presence of genotypes AA of rs693 and GT+TT of rs1799983, the chance of presenting high levels of chemerin showed a 2.21-fold increase (95%CI: 1.25−3.88) compared to the reference genotype. The development of classical CVRFs in this population may be influenced by chemerin and by two risk genotypes characteristic of variants in well-studied genes for hypertension and dyslipidemia.

Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Aged, 80 and over , Young Adult , Apolipoproteins B/genetics , Cardiovascular Diseases/genetics , Chemokines/blood , Polymorphism, Single Nucleotide/genetics , Nitric Oxide Synthase Type III/genetics , Rural Population , Brazil , Cardiovascular Diseases/metabolism , Cross-Sectional Studies , Risk Factors , Chemokines/genetics , Genotype