Document Detail

Calcium content and concretions of pineal glands of young and old rats. A scanning and X-ray microanalytical study.
MedLine Citation:
PMID:  1878938     Owner:  NLM     Status:  MEDLINE    
Calcium content and pineal concretions were studied in young (2-3 months) and old (28 months) Wistar rats. Samples, deep-frozen by liquid propane isopentane and freeze-dried were analysed by means of X-ray microanalysis in a scanning electron microscope. Total semi-quantitative measurements revealed that pineals of old rats showed a marked increase of calcium compared with the pineals of young rats. It is thus suggested that a calcium-rich environment is responsible for the growth of pineal concretions, which only appear in old rats. Pineal calcifications in rats could thus be an indicator of aging and/or of a degenerating state.
W Humbert; P Pévet
Related Documents :
8280908 - Age, but not pineal status, modulates circadian periodicity of golden hamsters.
18702448 - Effect of housing rats in dim light or long nights on heart rate.
10825648 - Effects of estrogen on the expression of connexin32 and connexin43 mrnas in the suprach...
2863298 - Effect of selective parasympathetic denervation on the daily rhythm of tyrosine transam...
11734188 - Effects of neurotensin receptor activation on brain stimulation reward in fischer 344 a...
6489728 - Sex differences in adrenocortical structure and function. xvii. analysis of adrenal gro...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Cell and tissue research     Volume:  263     ISSN:  0302-766X     ISO Abbreviation:  Cell Tissue Res.     Publication Date:  1991 Mar 
Date Detail:
Created Date:  1991-10-01     Completed Date:  1991-10-01     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0417625     Medline TA:  Cell Tissue Res     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  593-6     Citation Subset:  IM    
CNRS-URA 1332 Neurobiologie des fonctions rythmiques et saisonnières, Laboratoire de Zoologie, Strasbourg, France.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Aging / metabolism*
Calcium / analysis*,  metabolism
Electron Probe Microanalysis
Microscopy, Electron, Scanning
Pineal Gland / chemistry*,  metabolism,  ultrastructure
Rats, Inbred Strains
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Dissociation of photoreceptor cells from the pineal organ of the lamprey, Lampetra japonica.
Next Document:  The fine structure of lamellate cells in the brain of amphioxus (Branchiostoma lanceolatum, Cephaloc...