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Long-Term Arthralgia after Mayaro Virus Infection Correlates with Sustained Pro-inflammatory Cytokine Response.

ABSTRACT: Mayaro virus (MAYV), an alphavirus similar to chikungunya virus (CHIKV), causes an acute debilitating disease which results in the development of long-term arthralgia in more than 50% of infected individuals. Currently, the immune response and its role in the development of MAYV-induced persistent arthralgia remain unknown. In this study, we evaluated the immune response of individuals with confirmed MAYV infection in a one-year longitudinal study carried out in Loreto, Peru. We report that MAYV infection elicits robust immune responses that result in the development of a strong neutralizing antibody response and the secretion of pro-inflammatory immune mediators. The composition of these inflammatory mediators, in some cases, differed to those previously observed for CHIKV. Key mediators such as IL-13, IL-7 and VEGF were strongly induced following MAYV infection and were significantly increased in subjects that eventually developed persistent arthralgia. Although a strong neutralizing antibody response was observed in all subjects, it was not sufficient to prevent the long-term outcomes of MAYV infection. This study provides initial immunologic insight that may eventually contribute to prognostic tools and therapeutic treatments against this emerging pathogen.

SUBMITTER: Santiago FW

PROVIDER: S-EPMC4619727 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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Long-Term Arthralgia after Mayaro Virus Infection Correlates with Sustained Pro-inflammatory Cytokine Response.

Santiago Felix W FW Halsey Eric S ES Siles Crystyan C Vilcarromero Stalin S Guevara Carolina C Silvas Jesus A JA Ramal Cesar C Ampuero Julia S JS Aguilar Patricia V PV

PLoS neglected tropical diseases 20151023 10

Mayaro virus (MAYV), an alphavirus similar to chikungunya virus (CHIKV), causes an acute debilitating disease which results in the development of long-term arthralgia in more than 50% of infected individuals. Currently, the immune response and its role in the development of MAYV-induced persistent arthralgia remain unknown. In this study, we evaluated the immune response of individuals with confirmed MAYV infection in a one-year longitudinal study carried out in Loreto, Peru. We report that MAYV ...[more]

PMID: 26496497

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Project description:Background and aimsExtraintestinal manifestations [EIMs] such as arthritis/arthralgia are common in inflammatory bowel disease. We performed post hoc analyses of data from the GEMINI studies to evaluate the effect of vedolizumab, a gut-selective anti-trafficking agent, on arthritis/arthralgia.MethodsSustained resolution of baseline arthritis/arthralgia, worsening of baseline arthritis/arthralgia, the occurrence of new arthritis/arthralgia, and the composite of new/worsening arthritis/arthralgia were evaluated. Cox modelling was used for time-to-event analysis. The influence of corticosteroid-tapering was also investigated.ResultsIn Crohn's disease [CD] patients, vedolizumab was significantly less likely than placebo to be associated with new/worsening arthritis/arthralgia (hazard ratio [HR], 0.63; 95% confidence interval [CI], 0.44-0.89). Similar incidences of sustained resolution of arthritis/arthralgia occurred with vedolizumab and placebo. In CD patients on corticosteroids at baseline, a decrease in corticosteroid dose increased the risk of new/worsening arthritis/arthralgia (odds ratio [OR], 7.49; 95% CI, 3.50-15.97) regardless of treatment; and in those achieving corticosteroid-free status, arthritis/arthralgia was less likely with vedolizumab than with placebo [HR, 0.14; 95% CI, 0.05-0.35]. In ulcerative colitis [UC] patients, vedolizumab and placebo showed a similar incidence of new/worsening of arthritis/arthralgia. In UC patients on corticosteroid at baseline, arthritis/arthralgia was more likely in those achieving corticosteroid-free status than in those continuing corticosteroids (HR 2.63 [95% CI 1.13-6.11]); and in those achieving corticosteroid-free status, the incidence of arthritis/arthralgia was similar with vedolizumab and placebo.ConclusionsVedolizumab therapy was associated with a reduced likelihood of new/worsening arthritis/arthralgia in CD and no increased incidence of these events in UC.Studies included [clincialtrials.gov, number]GEMINI 1 [NCT00783718]; GEMINI 2 [NCT00783692]; GEMINI 3 [NCT01224171].

Dataset Information

Long-Term Arthralgia after Mayaro Virus Infection Correlates with Sustained Pro-inflammatory Cytokine Response.

Publications

Long-Term Arthralgia after Mayaro Virus Infection Correlates with Sustained Pro-inflammatory Cytokine Response.

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