鸡胚松果体中N-乙酰转移酶活性节律的个体发生
Ontogeny of N-acetyltransferase activity rhythm in pineal gland of chick embryo.
作者信息
Zeman M, Illnerová H
机构信息
Institute of Animal Physiology, Slovak Academy of Sciences, Prague.
出版信息
Comp Biochem Physiol A Comp Physiol. 1990;97(2):175-8. doi: 10.1016/0300-9629(90)90166-p.
PMID:1982932
Abstract
- N-acetyltransferase was present in pineal glands of 14-day-old chick embryos though no rhythm either in LL, DD or LD 12:12 was observed in this age. 2. Daily rhythm in pineal NAT activity was found in 18-day-old embryos incubated under LD 12:12 and LD 16:8 but no NAT rhythm was detected in DD or LL. 3. NAT rhythm persists for 2 days in constant darkness and it may be circadian in nature. 4. Presence of melatonin (85 +/- 8 pg/mg tissue) was detected in pineals of 18-day-old chick embryos.
摘要
- N-乙酰转移酶存在于14日龄鸡胚的松果体中，不过在这个年龄段，无论是在持续光照、持续黑暗还是12小时光照与12小时黑暗交替的条件下均未观察到节律。2. 在12小时光照与12小时黑暗交替以及16小时光照与8小时黑暗交替条件下孵化的18日龄胚胎的松果体中发现了N-乙酰转移酶活性的每日节律，但在持续黑暗或持续光照条件下未检测到N-乙酰转移酶节律。3. N-乙酰转移酶节律在持续黑暗中持续2天，其性质可能是昼夜节律。4. 在18日龄鸡胚的松果体中检测到褪黑素（85±8皮克/毫克组织）的存在。
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