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Isohumulones

hdl cholesterol diabetes hyperglycemia

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#1 APBT

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Posted 21 March 2012 - 10:28 PM


I stumbled on isohumulones, which appear to positively impact HDL, TC and hyperglycemia. I was only able to find a single supplemental source. Well, other than beer :-D http://www.thediabet....com/index.html


Br J Nutr. 2005 Apr;93(4):559-67.
Dietary isohumulones, the bitter components of beer, raise plasma HDL-cholesterol levels and reduce liver cholesterol and triacylglycerol contents similar to PPARalpha activations in C57BL/6 mice.

Miura Y, Hosono M, Oyamada C, Odai H, Oikawa S, Kondo K.

Source

Central Laboratories for Key Technology, Kirin Brewery Co. Ltd, Kanazawa-ku, Yokohamashi 236-0004, Japan. yu-miura@kirin.co.jp

Abstract

The effects of dietary isohumulones, the main components accounting for the bitter taste of beer, on lipid metabolism were examined. Young female C57BL/6N mice were fed diets containing isomerized hop extract (IHE), which consists mainly of isohumulones. Administration of IHE with an atherogenic (high-fat and high-cholesterol) diet for 2 weeks resulted in a significant increase in plasma HDL-cholesterol (P<0.01), along with a concomitant reduction in the atherosclerosis index, an increase in liver weight and a decrease in body weight gain in a dose-dependent manner. When animals received IHE with either a cholesterol or a basal diet for 1 week, significant decreases in the liver content of cholesterol (P<0.01) and triacylglycerol (cholesterol diet, P<0.01) were observed. Quantitative analyses of hepatic mRNA levels revealed that IHE administration resulted in up-regulation of mRNA for acyl-CoA oxidase, acyl-CoA synthetase, hydroxymethylglutaryl-CoA synthetase, lipoprotein lipase and fatty acid transport protein, and down-regulation of mRNA for Apo CIII and Apo AI. Administration of purified isohumulones effectively resulted in the same changes as IHE. Administration of fenofibrate, an agonist for PPARalpha, with a cholesterol diet caused marked hepatomegaly, an increase in plasma HDL-cholesterol, a decrease in hepatic cholesterol content, and alterations in hepatic mRNA levels similar to those observed in mice given IHE. Taken together, these results suggest that the modulation of lipid metabolism observed in mice fed diets containing isohumulones is, at least in part, mediated by activation of PPARalpha.

PMID: 15946420 [PubMed - indexed for MEDLINE]


Clin Nutr. 2009 Jun;28(3):278-84. Epub 2009 Apr 23.
Isohumulones, the bitter component of beer, improve hyperglycemia and decrease body fat in Japanese subjects with prediabetes.

Obara K, Mizutani M, Hitomi Y, Yajima H, Kondo K.

Source

Research and Development Laboratory, Kirin Beverage Company Ltd, Yokohama, Japan. k-obara@kirin.co.jp

Abstract

BACKGROUND &#38; AIMS:

A recent study reported that isohumulones, the bitter component of beer, activate peroxisome proliferator-activated receptor alpha (PPARalpha) and PPARgamma in vitro and decrease plasma glucose and lipid levels in diabetic mice. This study was to investigate the efficacy and safety of isohumulones for subjects with prediabetes.
METHODS:

Ninety-four subjects with prediabetes were randomly divided into four groups. A 12-week double-blind dose-finding study was performed in which subjects ingested placebo capsules or test capsules containing 16 mg, 32 mg or 48 mg of isohumulones per day.
RESULT:

After treatment, fasting blood glucose was decreased in the 32 mg and 48 mg groups after 4 weeks, but did not change in the placebo group. HbA1c was also significantly decreased after 4 weeks in the 16 mg group and after 8 weeks in the 32 mg and 48 mg groups. Body mass index (BMI) was significantly decreased in the 48 mg group as compared with the placebo group at 12 weeks. The decrease in total fat area was also significantly greater in the 48 mg group than in the placebo group at 12 weeks.
CONCLUSION:

The present study suggests that ingestion of isohumulones has beneficial effects in diabetes and obesity.

PMID: 19395131 [PubMed - indexed for MEDLINE]







Also tagged with one or more of these keywords: hdl, cholesterol, diabetes, hyperglycemia

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