Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
|
pubmed:dateCreated |
1988-11-14
|
pubmed:abstractText |
Purified chick duodenal brush border membrane vesicles (BBMV) were used to assess the effect of vitamin D on intestinal Ca2+ transport and membrane stability. BBMV preparations are right-side-out as judged by a nine-fold increase in accessibility of lactoperoxidase to core material actin in the presence of Triton X-100. Freshly prepared BBMV from vitamin D-deficient chicks support both sodium-dependent glucose transport and Ca2+ uptake. In vivo treatment with 1,25(OH)2D3 results in an 85% increase in the Vmax of Ca2+-uptake from 2.2 to 3.9 nmol/min/mg protein. The Km of Ca2+-uptake (0.9 mM) is independent of the vitamin D status of the chick. The majority of BBMV derived from vitamin D-replete chicks were destabilized and rendered incapable of supporting either sodium-dependent glucose uptake or Ca2+ uptake if they were held at 0-4 degrees C for 2 to 24 h. In 40 separate experiments, 80% of membranes derived from vitamin D-replete chicks showed characteristics of destabilization, whereas only 24% of all control membranes exhibited a lack of viability.
|
pubmed:grant | |
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Calcitriol,
http://linkedlifedata.com/resource/pubmed/chemical/Calcium,
http://linkedlifedata.com/resource/pubmed/chemical/Detergents,
http://linkedlifedata.com/resource/pubmed/chemical/Glucose,
http://linkedlifedata.com/resource/pubmed/chemical/Octoxynol,
http://linkedlifedata.com/resource/pubmed/chemical/Polyethylene Glycols,
http://linkedlifedata.com/resource/pubmed/chemical/Vitamin D
|
pubmed:status |
MEDLINE
|
pubmed:month |
Aug
|
pubmed:issn |
0884-0431
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
1
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
305-11
|
pubmed:dateRevised |
2007-11-14
|
pubmed:meshHeading |
pubmed-meshheading:3503545-Animals,
pubmed-meshheading:3503545-Calcitriol,
pubmed-meshheading:3503545-Calcium,
pubmed-meshheading:3503545-Cell Membrane Permeability,
pubmed-meshheading:3503545-Chickens,
pubmed-meshheading:3503545-Detergents,
pubmed-meshheading:3503545-Duodenum,
pubmed-meshheading:3503545-Glucose,
pubmed-meshheading:3503545-Male,
pubmed-meshheading:3503545-Microvilli,
pubmed-meshheading:3503545-Octoxynol,
pubmed-meshheading:3503545-Polyethylene Glycols,
pubmed-meshheading:3503545-Vitamin D,
pubmed-meshheading:3503545-Vitamin D Deficiency
|
pubmed:year |
1986
|
pubmed:articleTitle |
Vitamin D status and brush border membrane vesicles: 1,25-dihydroxyvitamin D3 induced destabilization.
|
pubmed:affiliation |
Department of Biochemistry, University of California, Riverside 92521.
|
pubmed:publicationType |
Journal Article,
In Vitro,
Research Support, U.S. Gov't, P.H.S.
|