Regulation of blood pressure and glucose metabolism induced by L-tryptophan in stroke-prone spontaneously hypertensive rats

Ardiansyah, Hitoshi Shirakawa, Yuto Inagawa, Takuya Koseki, Michio Komai

研究成果: Article査読

19 被引用数 (Scopus)

抄録

Background: Amino acids have been reported to act as modulators of various regulatory processes and to provide new therapeutic applications for either the prevention or treatment of metabolic disorders. The purpose of the present study is to investigate the effects of single oral dose administration and a continuous treatment of L-tryptophan (L-Trp) on the regulation of blood pressure and glucose metabolism in stroke-prone spontaneously hypertensive rats (SHRSP). Methods. First, male 9-week-old SHRSP were administered 100 mg L-Trpkg -1 body weight in saline to the L-Trp group and 0.9% saline to the control group via a gastric tube as a single oral dose of L-Trp. Second, three groups of SHRSP were fed an AIN-93M-based diet supplemented with L-tryptophan (L-Trp) (0, 200, or 1000 mgkg-1 diet) for 3 weeks as continuous treatment of L-Trp. Results: Single oral dose administration of L-Trp improved blood pressure, blood glucose, and insulin levels. Blood pressure, blood glucose, and insulin levels improved significantly in the L-Trp treatment groups. The administration of L-Trp also significantly increased plasma nitric oxide and serotonin levels. Conclusion: L-Trp by both single oral dose administration and continuous treatment improves glucose metabolism and blood pressure in SHRSP.

本文言語English
論文番号45
ジャーナルNutrition and Metabolism
8
DOI
出版ステータスPublished - 2011

ASJC Scopus subject areas

  • 医学(その他)
  • 内分泌学、糖尿病および代謝内科学
  • 栄養および糖尿病

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