• Chest · Jun 2016

    High Prevalence and Heterogeneity of Diabetes in TB Patients from South India: A Report from the Effects of Diabetes on Tuberculosis Severity (EDOTS) Study.

    • Hardy Kornfeld, Kim West, Kevin Kane, Satyavani Kumpatla, Rajesh Roy Zacharias, Carlos Martinez-Balzano, Wenjun Li, and Vijay Viswanathan.
    • University of Massachusetts Medical School, Worcester, Massachusetts. Electronic address: Hardy.Kornfeld@umassmed.edu.
    • Chest. 2016 Jun 1; 149 (6): 150115081501-8.

    BackgroundPrevious studies reported an association of diabetes mellitus (DM) with TB susceptibility. Many studies were retrospective, had weak diagnostic criteria for DM, and did not assess other comorbidities. The Effects of Diabetes on Tuberculosis Severity (EDOTS) study is addressing these limitations with a longitudinal comparison of patients with TB who are classified as diabetic or normoglycemic according to World Health Organization criteria. We report interim findings after enrolling 159 of a planned 300 subjects.MethodsA cohort study of patients with TB in South India with DM or normoglycemia defined by oral glucose tolerance test (OGTT) and fasting glucose. Glycohemoglobin (HbA1c), serum creatinine, lipids, and 25-hydroxyvitamin D were measured at enrollment. Patients were monitored monthly during TB treatment, and HbA1c measurement was repeated after 3 months.ResultsOf 209 eligible patients, 113 (54.1%) were classified as diabetic, 44 (21.0%) with impaired glucose tolerance, and 52 (24.9%) as normoglycemic. More patients with diabetes were detected by OGTT than by HbA1c. Diabetes was a newly received diagnosis for 37 (32.7%) in the DM group, and their median HbA1c (6.8%) was significantly lower than in those with previously diagnosed DM (HbA1c, 10.4%). Among 129 patients monitored for 3 months, HbA1c declined in all groups, with the greatest difference in patients with a newly received diagnosis of DM.ConclusionsEarly EDOTS study results reveal a strikingly high prevalence of glycemic disorders in South Indian patients with pulmonary TB and unexpected heterogeneity within the patient population with diabetes and TB. This glycemic control heterogeneity has implications for the TB-DM interaction and the interpretation of TB studies relying exclusively on HbA1c to define diabetic status.Copyright © 2016 American College of Chest Physicians. Published by Elsevier Inc. All rights reserved.

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