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Appl Physiol Nutr Metab. 2017 Aug;42(8):841-849. doi: 10.1139/apnm-2016-0644. Epub 2017 Mar 31.

Shrimp oil extracted from the shrimp processing waste reduces the development of insulin resistance and metabolic phenotypes in diet-induced obese rats.

Author information

1
a Coastal Zones Research Institute Inc. (CZRI), Shippagan, NB E8S 1J2, Canada.
2
b Natural Health Products Program, Aquatic and Crop Resource Development, National Research Council of Canada, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada.
3
c Natural Health Products Program, Aquatic and Crop Resource Development, National Research Council of Canada, 1411 Oxford Street, Halifax, NS B3H 3Y8, Canada.
4
d Novaceutics Consulting, 6501 Oak St, Halifax, NS B3L 1H5, Canada.
5
e Department of Biochemistry and Molecular Biology, Dalhousie University, 5850 College Street, Halifax, NS B3H 4R2, Canada.

Abstract

Diet-induced obesity, insulin resistance, impaired glucose tolerance, chronic inflammation, and oxidative stress represent the main features of type 2 diabetes mellitus. The present study was conducted to examine the efficacy and mechanisms of shrimp oil on glucose homeostasis in obese rats. Male CD rats fed a high-fat diet (52 kcal% fat) and 20% fructose drinking water were divided into 4 groups and treated with the dietary replacement of 0%, 10%, 15%, or 20% of lard with shrimp oil for 10 weeks. Age-matched rats fed a low-fat diet (10 kcal% fat) were used as the normal control. Rats on the high-fat diet showed impaired (p < 0.05) glucose tolerance and insulin resistance compared with rats fed the low-fat diet. Shrimp oil improved (p < 0.05) oral glucose tolerance, insulin response, and homeostatic model assessment-estimated insulin resistance index; decreased serum insulin, leptin, hemoglobin A1c, and free fatty acids; and increased adiponectin. Shrimp oil also increased (p < 0.05) antioxidant capacity and reduced oxidative stress and chronic inflammation. The results demonstrated that shrimp oil dose-dependently improved glycemic control in obese rats through multiple mechanisms.

KEYWORDS:

diet-induced obesity; glucose tolerance; inflammation; insulin sensitivity; obésité d’origine alimentaire; oxidative stress; rat; sensibilité insulinique; stress oxydatif; tolérance au glucose

PMID:
28363036
DOI:
10.1139/apnm-2016-0644
[Indexed for MEDLINE]

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