Katarzyna Ognik1, Wojciech Dworzański2, Iwona Sembratowicz1, Bartosz Fotschki3, Ewelina Cholewińska4, Piotr Listos5, Jerzy Juśkiewicz3. 1. Department of Biochemistry and Toxicology, Faculty of Biology, Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, Lublin, 20-950, Poland. 2. Chair and Department of Human Anatomy, Medical University of Lublin, Jaczewskiego 4, Lublin, 20-090, Poland. 3. Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, Olsztyn, 10-748, Poland. 4. Department of Biochemistry and Toxicology, Faculty of Biology, Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, Lublin, 20-950, Poland. Electronic address: ewelina.cholewinska@up.lublin.pl. 5. Department of Pathological Anatomy, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Głęboka 30, Lublin, 20-612, Poland.
Abstract
BACKGROUND: In the present study, we hypothesized that feeding rats a high-fat diet negatively affects liver metabolism and function and disturbs the histology of some internal organs. We also postulated that there is a form of chromium whose administration alleviates the negative effects of a high-fat diet in rats. METHODS: To verify the hypotheses, we tested the effect of various forms of chrome (picolinate - Cr-Pic, Chromium(III)-methionine complex - Cr-Met, and chrome nanoparticles - Cr-NPs) applied in the recommended amount of 0.3 mg/kg of BW on growth parameters, body fat, liver metabolism and functional disorders, and histological parameters of selected internal organs in rats fed a standard (S) or high-fat diet (F). The experiment was conducted on 56 male outbred Wistar rats (Rattus norvegicus. Cmdb:WI) randomly divided into eight experimental groups. For eight weeks the rats received a standard or high-fat diet, without Cr or with Cr at 0.3 mg/kg diet in the form of Cr-Pic, Cr-Met or Cr-NPs. RESULTS AND CONCLUSION: The use of a F diet disrupted the lipid-carbohydrate profile, worsened liver metabolism and function, reduced the expression of hepatic PPAR-α and leaded to negative changes in the histological image of internal organs - liver, kidneys and pancreas. The 8-week use of an chromium supplement in a F diet, regardless of the form used, did not improve the ratio of fat tissue to lean tissue, worsened liver function and negatively affected on the histological image of the liver, kidneys and pancreas. However, the most negative changes in lipid-carbohydrate metabolism and liver functioning were observed with CrNPs supplementation.
BACKGROUND: In the present study, we hypothesized that feeding rats a high-fat diet negatively affects liver metabolism and function and disturbs the histology of some internal organs. We also postulated that there is a form of chromium whose administration alleviates the negative effects of a high-fat diet in rats. METHODS: To verify the hypotheses, we tested the effect of various forms of chrome (picolinate - Cr-Pic, Chromium(III)-methionine complex - Cr-Met, and chrome nanoparticles - Cr-NPs) applied in the recommended amount of 0.3 mg/kg of BW on growth parameters, body fat, liver metabolism and functional disorders, and histological parameters of selected internal organs in rats fed a standard (S) or high-fat diet (F). The experiment was conducted on 56 male outbred Wistar rats (Rattus norvegicus. Cmdb:WI) randomly divided into eight experimental groups. For eight weeks the rats received a standard or high-fat diet, without Cr or with Cr at 0.3 mg/kg diet in the form of Cr-Pic, Cr-Met or Cr-NPs. RESULTS AND CONCLUSION: The use of a F diet disrupted the lipid-carbohydrate profile, worsened liver metabolism and function, reduced the expression of hepatic PPAR-α and leaded to negative changes in the histological image of internal organs - liver, kidneys and pancreas. The 8-week use of an chromium supplement in a F diet, regardless of the form used, did not improve the ratio of fat tissue to lean tissue, worsened liver function and negatively affected on the histological image of the liver, kidneys and pancreas. However, the most negative changes in lipid-carbohydrate metabolism and liver functioning were observed with CrNPs supplementation.
Authors: Luciano Brochine; Fernanda Ferreira Dos Santos; Flávia Mallaco Moreira; André Luis do Valle de Zoppa; Paulo Roberto Leme; Luis Orlindo Tedeschi; Sarita Bonagurio Gallo Journal: Biol Trace Elem Res Date: 2022-06-27 Impact factor: 3.738