PMID- 16155260 OWN - NLM STAT- MEDLINE DCOM- 20051101 LR - 20230318 IS - 0002-9165 (Print) IS - 0002-9165 (Linking) VI - 82 IP - 3 DP - 2005 Sep TI - Elevated atopy in healthy obese women. PG - 504-9 AB - BACKGROUND: Allergic disorders, including asthma, have increased dramatically in the United States in the past 20 y. Epidemiologic studies have found body mass index (body weight in kg/height squared in m) to be a positive independent correlate of atopy in women but not in men. OBJECTIVE: We investigated the prevalence of atopy among healthy obese and nonobese women and its relation to fat mass (FM), insulin resistance, and plasma concentrations of 17beta-estradiol, interleukin 4 (IL-4), and leptin. DESIGN: A cross-sectional study of 21 obese (> or = 30% body fat) and 22 nonobese (< 30% body fat) women (18-41 y of age) was performed. The following measurements were taken: FM by plethysmography, total and specific immunoglobulin E (IgE) by automated immunosorbent analysis, and blood glucose, insulin, C-peptide, 17beta-estradiol, sex hormone-binding globulin, and IL-4. Insulin sensitivity was determined on the basis of the fasting insulin resistance index and with an oral-glucose-tolerance test. RESULTS: The frequency of specific IgE in the obese group was almost 3 times that in the nonobese group (P = 0.008). The total IgE concentration was not significantly different between groups. Plasma concentrations of 17beta-estradiol, the ratio of 17beta-estradiol to sex hormone-binding globulin, the fasting insulin resistance index, and C-peptide and leptin concentrations were higher in the obese than in the nonobese group (P < 0.05) after adjustment for oral contraceptive use. All factors correlated positively with FM. Logistic regression showed FM to be the only positive predictor of specific IgE (P = 0.01). CONCLUSION: The findings confirm a direct relation between obesity and a T helper 2 cell immune response in women. FAU - Vieira, Victoria J AU - Vieira VJ AD - Department of Animal and Nutritional Sciences, University of New Hampshire, Durham, NH 03824, USA. FAU - Ronan, Anne M AU - Ronan AM FAU - Windt, Mark R AU - Windt MR FAU - Tagliaferro, Anthony R AU - Tagliaferro AR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Clin Nutr JT - The American journal of clinical nutrition JID - 0376027 RN - 0 (Leptin) RN - 0 (Sex Hormone-Binding Globulin) RN - 207137-56-2 (Interleukin-4) RN - 37341-29-0 (Immunoglobulin E) RN - 4TI98Z838E (Estradiol) SB - IM MH - Adipose Tissue/metabolism MH - Adolescent MH - Adult MH - Case-Control Studies MH - Cross-Sectional Studies MH - Estradiol/*blood MH - Female MH - Glucose Tolerance Test MH - Humans MH - Hypersensitivity/blood/*epidemiology/immunology MH - Immunoglobulin E/blood/immunology MH - Insulin Resistance/*physiology MH - Interleukin-4/*blood MH - Leptin/*blood MH - Logistic Models MH - Obesity/blood/immunology/*physiopathology MH - Prevalence MH - Sex Factors MH - Sex Hormone-Binding Globulin/analysis EDAT- 2005/09/13 09:00 MHDA- 2005/11/03 09:00 CRDT- 2005/09/13 09:00 PHST- 2005/09/13 09:00 [pubmed] PHST- 2005/11/03 09:00 [medline] PHST- 2005/09/13 09:00 [entrez] AID - S0002-9165(23)29594-5 [pii] AID - 10.1093/ajcn.82.3.504 [doi] PST - ppublish SO - Am J Clin Nutr. 2005 Sep;82(3):504-9. doi: 10.1093/ajcn.82.3.504.