Role Of Interleukin-6 In Pathogenesis Research Articles

Evaluation of Serum Interleukin-6 Level in Vitiligo Patients before and after Phototherapy

Background: Vitiligo is an acquired pigmentary disorder of the skin, resulting from a loss of functioning epidermal melanocytes. Multiple pathogenetic factors have been proposed, including the neural theory, genetic predisposition and impaired anti-oxidative defense. Objective: To evaluate the role of interleukin-6 in pathogenesis of vitiligo and the effect Narrow band-UVB on IL-6 serum levels. Patients and Methods: The study included 30 patients with vitiligo and 30 healthy controls. Each was submitted to thorough history taking, complete general, dermatological examinations including VASI score, and assessment of serum interleukin-6 before and after 16 sessions of NB-UVB. Results: Results of this study showed no statistical significant difference between patients and control as regard age and gender. Our study revealed a statistically significant difference between levels of IL-6 in patients group before and after therapy. Conclusion: Knowing exactly the role of IL-6 is important not only to clarify the pathogenesis of this disease, but also to improve the clinical course of vitiligo (i.e., disease stabilization and/or repigmentation) and the quality-of-life of patients.

The role of interleukin-6 in pathogenesis of chronic periapical lesions

Summary Introduction Cytokine network plays an important role in pathogenesis of chronic periapical lesions. The aim of this study was to determine the concentration of interleukin-6 (IL-6) in tissue homogenates of human periapical lesions and correlate its levels with symptomatology and size of the lesions. Materials and Methods 93 samples of chronic periapical lesions were obtained after extraction of teeth. Samples were divided according to the clinical presentation as symptomatic and asymptomatic, and according to the size as large and small. The concentration of IL-6 was analyzed using ELISA. Results Statistically significant difference in IL-6 concentration was observed in symptomatic lesions compared to asymptomatic (p<0.001). Analysis showed statistically higher concentration in large symptomatic lesions compared to large asymptomatic lesions (p<0.001), and in small symptomatic lesions compared to small asymptomatic (p<0.05). Higher production of IL-6 was observed in large lesions compared to small but this difference was not statistically significant. Conclusion Higher concentration of IL-6 in lesions with expressed clinical symptoms as well as in large lesions indicates that IL-6 is an important factor responsible for the progression of lesions and bone resorption.

Potential role of interleukin-6 in pathogenesis of fatigue in multiple sclerosis (MS) and effects of immunomodulating therapy

Potential role of interleukin-6 in pathogenesis of fatigue in multiple sclerosis (MS) and effects of immunomodulating therapy

Analyses of cytokines and cytokine receptors suggest important role for interleukin-6 in pathogenesis of multiple sclerosis

Analyses of cytokines and cytokine receptors suggest important role for interleukin-6 in pathogenesis of multiple sclerosis

Possible Role of IL-6 in Pathogenesis of Immune Complex-Mediated Glomerulonephritis in NZB/W F1 Mice: Induction of IgG Class Anti-DNA Autoantibody Production

This study demonstrates that interleukin-6 (IL-6) increases the autoantibody production by B cells from NZB/W F1 mice. Splenic B cells were cultured for 5 days in the presence or absence of human IL-6, and then the anti-DNA antibody and immunoglobulin contents in the culture supernatants were measured by ELISA. Adding IL-6 increased IgG anti-DNA antibody production by B cells from old mice (30 weeks), but not from young ones (17 weeks). B cells obtained from both young and old mice produced IgM anti-DNA antibody, which increased when IL-6 was added. The increased anti-DNA antibody production was suppressed by anti-recombinant human IL-6 antibody to the background level, i.e. antibody contents in the absence of IL-6. In contrast, murine IL-5 did not increase IgG anti-DNA antibody production, although it promoted the production of IgM anti-DNA antibody. Furthermore, when IL-5 was added in combination with IL-6, there was an additive increase in IgM, but not in IgG anti-DNA antibody production. Similar results were obtained in the measurement of the immunoglobulin contents. These results suggest the possible role of IL-6 in the pathogenesis of autoimmune disease in NZB/W F1 mice.