黄嘌呤
盲肠
次黄嘌呤
直肠
尿酸
大肠
鸟嘌呤
生物化学
化学
嘌呤代谢
内科学
医学
核苷酸
基因
酶
作者
Yutaka Karasawa,Ishi-I Toshiya,Kubota Tohru
出处
期刊:Comparative Biochemistry and Physiology Part A: Physiology
[Elsevier]
日期:1991-01-01
卷期号:100 (1): 227-230
被引量:3
标识
DOI:10.1016/0300-9629(91)90213-v
摘要
1. Absorption of purines and their metabolism by the lower intestine were estimated by using the everted gut sacs from the colo-rectum and caecum of the chicken. 2. Adenine, hypoxanthine and uric acid were appreciably absorbed from the colo-rectum and caecum, and an especially high rate was observed in the absorption of uric acid from the colo-rectum. 3. Guanine was not absorbed unchanged from either the colo-rectum or the caecum and a small amount of xanthine was absorbed only from the caecum. 4. Hypoxanthine was also absorbed in uric acid form, to a much lesser extent, in xanthine form from the colo-rectum and caecum, adenine and xanthine in uric acid form from the colo-rectum and adenine in hypoxanthine form from the colo-rectum and caecum. 5. Adenine was metabolized to hypoxanthine and xanthine, guanine and hypoxanthine to uric acid and xanthine, and xanthine to adenine, in both mucosal fluids of the colo-rectum and caecum. The conversion of guanine to uric acid in the caecum was most active, being almost twice as much as that in the colo-rectum.
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