Title
Tuberculosis-associated anemia is linked to a distinct inflammatory profile that persists after initiation of antitubercular therapy
Date Issued
2019
Access level
open access
Resource Type
journal article
Author(s)
Gil-Santana L.
Cruz L.A.B.
Miranda P.F.C.
Fukutani K.F.
Silveira-Mattos P.S.
Silva E.C.
Oliveira M.G.
Mesquita E.D.D.
Rauwerdink A.
Cobelens F.
Oliveira M.M.
Kritski A.
Andrade B.B.
Instituto Gonçalo Moniz
Publisher(s)
Nature Publishing Group
Abstract
Pulmonary tuberculosis (PTB) is associated with chronic inflammation and anemia. How anemia impacts systemic inflammation in PTB patients undergoing antitubercular therapy (ATT) is not fully understood. In the present study, data on several blood biochemical parameters were retrospectively analyzed from 118 PTB patients during the first 60 days of ATT. Multidimensional statistical analyses were employed to perform detailed inflammatory profiling of patients stratified by anemia status prior to treatment. Anemia was defined as hemoglobin levels <12.5 g/dL for female and <13.5 g/dL for male individuals. The findings revealed that most of anemia cases were likely caused by chronic inflammation. A distinct biosignature related to anemia was detected, defined by increased values of uric acid, C-reactive protein, and erythrocyte sedimentation rate. Importantly, anemic patients sustained increased levels of several biochemical markers at day 60 of therapy. Preliminary analysis failed to demonstrate association between persistent inflammation during ATT with frequency of positive sputum cultures at day 60. Thus, TB patients with anemia exhibit a distinct inflammatory profile, which is only partially reverted at day 60 of ATT.
Volume
9
Issue
1
Language
English
OCDE Knowledge area
Sistema respiratorio
Scopus EID
2-s2.0-85061065308
PubMed ID
Source
Scientific Reports
ISSN of the container
20452322
Sponsor(s)
The authors would like to thank the study participants. This work was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)/Instituto Nacional de Ciência e Tecnologia (INCT, grant number: 573548/2008–0) and Fundação de Amparo à Pesquisa do Rio de Janeiro (FAPERJ, grant number: E-26/110.974/2011). This study was also financed in part by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) (Finance Code 001). A.K. is the recipient of a career award from CNPq (produtividade em pesquisa) and FAPERJ (Cientistas do Nosso Estado). L.G.-S. was a scientific initiation fellow and M.B.A. received PhD fellowship from Fundação de Amparo à Pesquisa da Bahia (FAPESB) and Fundação Oswaldo Cruz (FIOCRUZ). L.A.B.C. is a research fellow from CNPq. The work from B.B.A. was supported by intramural research program from FIOCRUZ and from the National Institutes of Health (U01AI115940). The funders had no role in study design, data collection and analysis, the decision to publish, or the preparation of the manuscript.
Sources of information:
Directorio de Producción Científica
Scopus