𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Photo-reversal of the circadian rhythm in the proliferative activity of the mouse small intestine

✍ Scribed by Curtis P. Sigdestad; S. Lesher

Publisher
John Wiley and Sons
Year
1971
Tongue
English
Weight
284 KB
Volume
78
Category
Article
ISSN
0021-9541

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Mice (C57Bl) were placed for 35 days in a room with reversed light cycle; lights came on at 1800 hours and off at 0600 hours. At six hour intervals throughout the day three mice were injected with tritiated thymidine and sacrificed 30 minutes later. Crypts were dissected for radioautography and determination of disintegrations per minute per crypt, the number of cells in mitosis and the number of cells synthesizing DNA was determined. The results reported clearly demonstrate reversal of the circadian rhythm in the parameters tested.

πŸ“œ SIMILAR VOLUMES

Development of pacemaker activity and in
Development of pacemaker activity and interstitial cells of cajal in the neonatal mouse small intestine
✍ Louis W.C. Liu; Lars Thuneberg; Jan D. Huizinga πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 720 KB

Intestinal motor patterns are not well developed in premature infants. Similarly, in neonatal mice, irregular motor patterns were observed. Pacemaker cells, identified in the small intestine as interstitial cells of Cajal (ICCs) associated with Auerbach's plexus (ICC-APs), contribute to the generati

Circadian rhythms in mitotic activity an
Circadian rhythms in mitotic activity and3H-thymidine uptake in the duodenum: Effect of isoproterenol on the mitotic rhythm
✍ Scheving, Lawrence E. ;Burns, E. Robert ;Pauly, John E. πŸ“‚ Article πŸ“… 1972 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 541 KB

Mitotic activity in the duodenum of the rat and mouse exhibits a circadian periodicity with a peak in the rat between 1200 and 1500 hours and a sustained trough between 1800 and 0600. Scintillation counts revealed a similar rhythm in the total uptake of 3H-thymidine by the rat duodenum with a sustai

The identification and chemical coding o
The identification and chemical coding of cholinergic neurons in the small and large intestine of the mouse
✍ Sang, Q. ;Young, H.M. πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 558 KB

Background: The recent availability of antisera to the vesicular acetylcholine transporter (VAChT) and choline acetyltransferase (ChAT) that demonstrate peripheral cholinergic neurons has made possible the anatomical identification of cholinergic neurons in the enteric nervous system. In this study,