Circadian DNA-synthetic Rhythm Accompanied Mitotic Rhythm in Newly Hatched in Chicken Liver : Possible Role of Feeding Regiment

사료섭취가 병아리의 간세포증식 리듬에 미치는 영향

  • Han, Joon-Pyo (Dept. of Food Science and Technology, Hyosung Women's University)
  • 한준표 (효성여자대학교 식품가공학과)
  • Published : 1989.12.30


The division and circadian DNA-synthesis rtythm are studied in chick liver immediately after hatching. The vision function is tested by the mitotic and the $^3H-thymidine$ labelling index The DNA synthesis exhibited a cyclic variation of 12 hours immediately after hatching. The rhythmic changes of DNA synthesis was maintained in the liver of meal-fed chickens, but the DNA synthetic activities decreased gradually in the starved chicken liver. From this time, the rhythm of DNA synthesis was greatly afffected by lighting schedule, all these DNA synthesis of chicken liver was accompained by mitosis.