Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1995-7-12
pubmed:abstractText
Pineal tissue calcifications (male, ages 14, 47, 62, 82), which were metallographically embedded and polished at controlled levels and studied by transmission electron microscopy and microanalytic spectroscopy, showed age-related differences. Results show that concentrically arranged crescent-shaped lamellae increase in number and decrease in width with age. Calcium (Ca) and phosphorus (P) per point measurements in dark and light lamellae at various distances from the core show Ca/P molar ratios between 1.49-1.62 in the 82-year-old specimen as compared to 1.26 to 1.41 in the younger specimens. The 62-year-old specimens show a decrease in P and an increase in Ca from periphery to center. These data and other descriptive details suggest that the sum of these changes represent remodelling of the mineralogical structure within the same calcification throughout the life span.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0742-3098
pubmed:author
pubmed:issnType
Print
pubmed:volume
18
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
12-20
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Age-related differences in the structure of human pineal calcium deposits: results of transmission electron microscopy and mineralographic microanalysis.
pubmed:affiliation
Pineal Research Laboratory, VA Medical Center, Providence, RI 02908, USA.
pubmed:publicationType
Journal Article