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Hyperinsulinemic response to oral glucose challenge in individuals with posttraumatic stress disorder.

Abstract：

BACKGROUND:Posttraumatic stress disorder (PTSD) is associated with a 2-4 fold increased risk of developing Type 2 diabetes mellitus. However, detailed assessments of glucose metabolism and insulin secretion in a study designed to minimize confounders are lacking. Furthermore, few studies examine potential mechanisms involved. We analyzed data from a case-control study of medically healthy, medication-free adults to determine whether individuals with PTSD had abnormal glucose or insulin response to oral glucose tolerance test (OGTT) compared to controls. Secondarily, we assessed potential mediators such as sleep, cortisol and adiponectin. METHODS:Data was analyzed from 92 age and gender-matched subjects (44 PTSD, 48 controls). Chronic PTSD was diagnosed using the Structured Clinical Interview for DSM-IV and Clinician Administered PTSD Scale. Subjects underwent 75-g OGTT, actigraphy and sleep diary (to quantify sleep duration), polysomnography (to assess slow wave sleep [SWS] and delta power), and overnight blood sampling (for cortisol and adiponectin). RESULTS:At baseline, individuals with PTSD had mildly increased insulin levels (by 19%, compared to controls, p=0.048) that was mediated primarily by weight. In response to OGTT, the PTSD group had higher levels of insulin at 120 min (by 44%, p=0.03) and insulin AUC (by 43%, p=0.015) compared to controls, after adjusting for confounders. Glucose levels were similar in the two groups. Although self-reported sleep duration, SWS, and delta power differed between PTSD subjects and controls, they did not mediate the effects of PTSD status on insulin response. CONCLUSION:In this case-control study, individuals with PTSD had a hyperinsulinemic response to oral glucose challenge compared to controls, suggestive of insulin resistance.

journal_name

Psychoneuroendocrinology

journal_title

Psychoneuroendocrinology

authors

Rao MN,Chau A,Madden E,Inslicht S,Talbot L,Richards A,O'Donovan A,Ruoff L,Grunfeld C,Neylan TC

doi

10.1016/j.psyneuen.2014.07.006

subject

Has Abstract

pub_date

2014-11-01 00:00:00

pages

171-81

eissn

0306-4530

issn

1873-3360

pii

S0306-4530(14)00258-3

journal_volume

49

pub_type

杂志文章

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