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Article

Polysaccharide-Rich Red Algae (Gelidium amansii) Hot-Water Extracts Alleviate Abnormal Hepatic Lipid Metabolism without Suppression of Glucose Intolerance in a Streptozotocin/Nicotinamide-Induced Diabetic Rat Model

by
Shing-Hwa Liu
1,2,3,
Chia-Yu Ku
4 and
Meng-Tsan Chiang
4,*
1
Institute of Toxicology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
2
Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
3
Department of Pediatrics, College of Medicine, National Taiwan University Hospital, Taipei 10051, Taiwan
4
Department of Food Science, National Taiwan Ocean University, Keelung 20224, Taiwan
*
Author to whom correspondence should be addressed.
Molecules 2022, 27(4), 1447; https://doi.org/10.3390/molecules27041447
Submission received: 28 January 2022 / Revised: 12 February 2022 / Accepted: 18 February 2022 / Published: 21 February 2022
(This article belongs to the Special Issue Functional Food and Their Pharmaceutical Properties)
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Abstract

This study was designed to investigate the effects of polysaccharide-rich red algae (Gelidium amansii) hot-water extracts (GHE) on lipid and glucose metabolism in rats with streptozotocin (STZ)/nicotinamide (NA)-induced diabetes. Rats were divided into three groups: NC—normal control group), DM—diabetic group, and DG—diabetic group supplemented with GHE (5%). The experimental diet and drinking water were available ad libitum for 10 weeks. After the 10-week feeding duration, the body weight, liver weight, total adipose tissue weight, and hepatic TBARS and cholesterol levels were significantly increased, and hepatic glycogen content and adipose lipolysis rate were significantly decreased in the DM group, which could be effectively reversed by supplementation of GHE. However, GHE supplementation could not improve the glucose intolerance in DM rats. It was interesting to note that GHE supplementation could decrease the liver glucose-6-phosphotase activity, which was increased in DM rats. Taken together, these results suggested that GHE feeding may ameliorate abnormal hepatic lipid metabolism, but not glucose intolerance, in diabetic rats induced by STZ/NA.
Keywords: red algae hot-water extracts; polysaccharide-rich; diabetic rats; glucose metabolism red algae hot-water extracts; polysaccharide-rich; diabetic rats; glucose metabolism

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MDPI and ACS Style

Liu, S.-H.; Ku, C.-Y.; Chiang, M.-T. Polysaccharide-Rich Red Algae (Gelidium amansii) Hot-Water Extracts Alleviate Abnormal Hepatic Lipid Metabolism without Suppression of Glucose Intolerance in a Streptozotocin/Nicotinamide-Induced Diabetic Rat Model. Molecules 2022, 27, 1447. https://doi.org/10.3390/molecules27041447

AMA Style

Liu S-H, Ku C-Y, Chiang M-T. Polysaccharide-Rich Red Algae (Gelidium amansii) Hot-Water Extracts Alleviate Abnormal Hepatic Lipid Metabolism without Suppression of Glucose Intolerance in a Streptozotocin/Nicotinamide-Induced Diabetic Rat Model. Molecules. 2022; 27(4):1447. https://doi.org/10.3390/molecules27041447

Chicago/Turabian Style

Liu, Shing-Hwa, Chia-Yu Ku, and Meng-Tsan Chiang. 2022. "Polysaccharide-Rich Red Algae (Gelidium amansii) Hot-Water Extracts Alleviate Abnormal Hepatic Lipid Metabolism without Suppression of Glucose Intolerance in a Streptozotocin/Nicotinamide-Induced Diabetic Rat Model" Molecules 27, no. 4: 1447. https://doi.org/10.3390/molecules27041447

APA Style

Liu, S.-H., Ku, C.-Y., & Chiang, M.-T. (2022). Polysaccharide-Rich Red Algae (Gelidium amansii) Hot-Water Extracts Alleviate Abnormal Hepatic Lipid Metabolism without Suppression of Glucose Intolerance in a Streptozotocin/Nicotinamide-Induced Diabetic Rat Model. Molecules, 27(4), 1447. https://doi.org/10.3390/molecules27041447

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