Linked Life Data

7059808

Source:http://linkedlifedata.com/resource/pubmed/id/7059808

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1982-5-12
pubmed:abstractText
In syrian hamsters, elevated night-time pineal melatonin levels are quickly reduced to low daytime levels by exposing the animals to light. The purpose of this study was to determine the lowest light intensity capable of causing a large reduction in night-time levels of pineal melatonin in the male hamster. During the dark phase of the light:dark cycle, groups of hamsters were exposed to one of 8 different intensities of white fluorescent light: 5380, 2798, 151, 20.44, 5.38, 1.08, 0.11 and 0.01 lux. For each light intensity, pineals were collected from 8 hamsters each at 2 min before and at 2, 8 and 32 min after the lights were turned on. Pineal melatonin content was determined by radioimmunoassay. Light intensities of 1.08 lux or greater depressed pineal melatonin content significantly (P less than 0.001). Light intensities of 0.11 or 0.01 lux failed to depress pineal melatonin levels. Thus, the apparent threshold for the action of white fluorescent light on hamster pineal melatonin content lies between l.08 and 0.11 lux.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0006-8993
pubmed:author
pubmed:issnType
Print
pubmed:day
4
pubmed:volume
233
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
75-81
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1982
pubmed:articleTitle
The effect of different light intensities on pineal melatonin content.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't