Linked Life Data

1685364

Source:http://linkedlifedata.com/resource/pubmed/id/1685364

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1992-3-5
pubmed:abstractText
1. Turkey embryos were incubated in ovo or in long-term shell-less culture (ex ovo) for 14, 18, 22 or 26 days, at which time the concentrations of zinc, copper, iron, manganese and calcium in yolk and yolk sac membrane were determined. 2. Yolk manganese and calcium concentrations increased during incubation in ovo while the concentrations of zinc, copper and iron declined. The concentrations of zinc, copper and iron in yolk from ex ovo embryos did not decline. Yolk calcium concentration increased during incubation ex ovo, although to a much lesser extent than that observed in ovo. 3. The concentration of zinc, copper and iron declined in yolk sac tissue during incubation in ovo whereas no decline was observed for yolk sac tissue from ex ovo embryos. Yolk sac calcium and manganese concentrations increased during incubation in ovo and ex ovo, although the increase in calcium concentration for ex ovo yolk sac was much smaller than that observed in ovo. 4. A peak corresponding to metallothionein (MT) which bound both zinc and copper was isolated from yolk sac cytosol on day 14 of incubation in ovo using gel-permeation column chromatography. 5. Further fractionation of the MT peak by anion exchange chromatography revealed three metal-binding peaks designated MT-1, MT-2a and MT-2b. The majority of the zinc was bound to MT-2a and MT-2b whereas most of the copper was bound to a single peak (MT-2b). 6. The concentrations of zinc and copper in yolk sac cytosol reached a maximum on day 14 of incubation in ovo and declined through to day 28 (hatching).(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0300-9629
pubmed:author
pubmed:issnType
Print
pubmed:volume
100
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1017-23
pubmed:dateRevised
2008-10-30
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Mineral metabolism in the developing turkey embryo--II. The role of the yolk sac.
pubmed:affiliation
U.S. Department of Agriculture, Beltsville Agricultural Research Center, MD 20705.
pubmed:publicationType
Journal Article, Comparative Study