| Exercise Training Decreases Adipose Tissue Inflammation in Cachectic Rats. | |
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MedLine Citation:
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PMID: 22266827 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Bearing in mind that cancer cachexia is associated with chronic systemic inflammation and that endurance training has been adopted as a nonpharmacological anti-inflammatory strategy, we examined the effect of 8 weeks of moderate intensity exercise upon the balance of anti- and pro-inflammatory cytokines in 2 different depots of white adipose tissue in cachectic tumour-bearing (Walker-256 carcinosarcoma) rats. Animals were assigned to a sedentary control (SC), sedentary tumour-bearing (ST), sedentary pair-fed (SPF) or exercise control (EC), exercise tumour-bearing (ET), and exercise pair-fed (EPF) group. Trained rats ran on a treadmill (60% VO2max) 60 min/day, 5 days/week, for 8 weeks. The retroperitoneal (RPAT) and mesenteric (MEAT) adipose pads were excised and the mRNA (RT-PCR) and protein (ELISA) expression of IL-1β, IL-6, TNF-α, and IL-10 were evaluated. The number of infiltrating monocytes in the adipose tissue was increased in cachectic rats. TNF-α mRNA in MEAT was increased in the cachectic animals (p<0.05) in relation to SC. RPAT protein expression of all studied cytokines was increased in cachectic animals in relation to SC and SPF (p<0.05). In this pad, IL-10/TNF-α ratio was reduced in the cachectic animals in comparison with SC (p<0.05) indicating inflammation. Exercise training improved IL-10/TNF-α ratio and induced a reduction of the infiltrating monocytes both in MEAT and RPAT (p<0.05), when compared with ST. We conclude that cachexia is associated with inflammation of white adipose tissue and that exercise training prevents this effect in the MEAT, and partially in RPAT. |
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Authors:
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F S Lira; A S Yamashita; J C Rosa; C H Koyama; E C Caperuto; M L Batista Jr; M C L Seelaender |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-20 |
Journal Detail:
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Title: Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme Volume: - ISSN: 1439-4286 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0177722 Medline TA: Horm Metab Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© Georg Thieme Verlag KG Stuttgart · New York. |
Affiliation:
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Cancer Metabolism Research Group, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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