Effect of heat-moisture treated brown rice crackers on postprandial flow-mediated dilation in adults with mild endothelial dysfunction

Autor: Kenichi Watanabe, Masao Hirayama, Somasundaram Arumugam, Masayoshi Sugawara, Hisanori Kato, Sumiko Nakamura, Ken'ichi Ohtsubo, Hitoshi Matsumoto, Yuri Nomi, Noriyuki Homma, Yoshifumi Fujii, Naoto Murohashi, Rajarajan A Thandavarayan, Hiroshi Suzuki, Kazuya Fujihara, Satoru Kodama, Hirohito Sone
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Heliyon, Vol 8, Iss 8, Pp e10284- (2022)
Druh dokumentu: article
ISSN: 2405-8440
DOI: 10.1016/j.heliyon.2022.e10284
Popis: Background: Endothelial dysfunction is an early pathophysiological feature and independent predictor of a poor prognosis in most forms of cardiovascular disease. We evaluated the effect of brown rice crackers (BR-C) on endothelial function. Methods: Effect of heat-moisture treated (HMT) -BR-C on postprandial flow-mediated dilation (FMD) in adults with mild endothelial dysfunction was compared with that of BR-C and white rice crackers (WR-C) in 12 adults with mild endothelial dysfunction (less than 7.0% of FMD) by a randomized, single-blind, three-treatment three-period crossover trial (UMIN 000034898). Since we considered that the FMD increase was associated with the treatment of HMT-BR-C, we examined the effect of three possible factors: postprandial glucose levels, polyphenol content, and polyphenol release from the food matrix. Results: Mean pre-intake baseline FMD values of HMT-BR-C, BR-C, and WR-C were 4.9%, 5.1%, and 4.9%, respectively, and those values 1 h post-intake were 6.3%, 5.1%, and 4.8%, respectively. There was no difference in intergroup comparisons of FMD using Dunnett's multiple comparison test. There was a significant increase in FMD only in HMT-BR-C in intragroup comparisons (P = 0.042 by paired-t test). In comparison with BR-C, no significant difference was noted in the postprandial glucose level nor in the content of total polyphenols and ferulic acid derivatives in HMT-BR-C. However, the 70% ethanol extracted from HMT-BR-C contained a significantly larger amount of free and bound ferulic acids than from BR-C. Conclusion: HMT-BR-C intake increased the postprandial FMD response.
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