Detrimental metabolic effects of combining long-term cigarette smoke exposure and high-fat diet in mice.

Detrimental metabolic effects of combining long-term cigarette smoke exposure and high-fat diet in mice. Research Abstract Details 

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Detrimental metabolic effects of combining long-term cigarette smoke exposure and high-fat diet in mice. Abstract Text:

Hui Chen,Michelle J Hansen,Jessica E Jones,Ross Vlahos,Gary P Anderson,Margaret J Morris,Hui Chen,Michelle J Hansen,Jessica E Jones,Ross Vlahos,Gary P Anderson,Margaret J Morris,

Obesity and cigarette smoking are both important risk factors for insulin resistance, cardiovascular disease, and cancer. Smoking reduces appetite, which makes many people reluctant to quit. Few studies have documented the metabolic impact of combined smoke exposure (se) and high-fat-diet (HFD). Neuropeptide Y (NPY) is a powerful hypothalamic feeding stimulator that promotes obesity. We investigated how chronic se affects caloric intake, adiposity, plasma hormones, inflammatory mediators, and hypothalamic NPY peptide in animals fed a palatable HFD. Balb/c mice (5 wk old, male) were exposed to smoke (2 cigarettes, twice/day, 6 days/wk, for 7 wk) with or without HFD. Sham-exposed mice were handled similarly without se. Plasma leptin, hypothalamic NPY, and adipose triglyceride lipase (ATGL) mRNA were measured. HFD induced a 2.3-fold increase in caloric intake, increased adiposity, and glucose in both sham and se cohorts. Smoke exposure decreased caloric intake by 23%, with reduced body weight in both dietary groups. Fat mass and glucose were reduced only by se in the chow-fed animals. ATGL mRNA was reduced by HFD in se animals. Total hypothalamic NPY was reduced by HFD, but only in sham-exposed animals; se increased arcuate NPY. We conclude that although se ameliorated hyperphagia and reversed the weight gain associated with HFD, it failed to reverse fat accumulation and hyperglycemia. The reduced ATGL mRNA expression induced by combined HFD and se may contribute to fat retention. Our data support a powerful health message that smoking in the presence of an unhealthy Western diet increases metabolic disorders and fat accumulation.

Detrimental metabolic effects of combining long-term cigarette smoke exposure and high-fat diet in mice. Publishing Authors By Initials

H Chen,MJ Hansen,JE Jones,R Vlahos,GP Anderson,MJ Morris,H Chen,MJ Hansen,JE Jones,R Vlahos,GP Anderson,MJ Morris,

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Detrimental metabolic effects of combining long-term cigarette smoke exposure and high-fat diet in mice. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: American journal of physiology. Endocrinology and

VOLUME: 293

Page Numbers: E1564-71

Journal Abbreviation: Am. J. Physiol. Endocrinol. Me

ISSN: 0193-1849

DAY: 16

MONTH: 10

YEAR: 2007

Detrimental metabolic effects of combining long-term cigarette smoke exposure and high-fat diet in mice. Information

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LANGUAGE: eng

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AFFILIATION: Dept. of Pharmacology, Univ. of New South Wales, NSW 2052, Australia. m.morris@unsw.edu.au).

Country: United States

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MEDLINETA: Am J Physiol Endocrinol Metab

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