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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
9062
|
pubmed:dateCreated |
1997-6-2
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pubmed:abstractText |
It is usually considered that red-cell mass is controlled by erythropoietin-driven bone marrow red-cell production, and no physiological mechanisms can shorten survival of circulating red cells. In adapting to acute plethora in microgravity, astronauts' red-cell mass falls too rapidly to be explained by diminished red-cell production. Ferrokinetics show no early decline in erythropolesis, but red cells radiolabelled 12 days before launch survive normally. Selective destruction of the youngest circulating red cells-a process we call neocytolysis-is the only plausible explanation. A fall in erythropoietin below a threshold is likely to initiate neocytolysis, probably by influencing surface-adhesion molecules. Recognition of neocytolysis will require re-examination of the pathophysiology and treatment of several blood disorders, including the anaemia of renal disease.
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pubmed:keyword | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
AIM
|
pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0140-6736
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:day |
10
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pubmed:volume |
349
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1389-90
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:9149714-Adaptation, Physiological,
pubmed-meshheading:9149714-Apoptosis,
pubmed-meshheading:9149714-Erythrocyte Aging,
pubmed-meshheading:9149714-Erythrocyte Volume,
pubmed-meshheading:9149714-Erythropoiesis,
pubmed-meshheading:9149714-Homeostasis,
pubmed-meshheading:9149714-Humans,
pubmed-meshheading:9149714-Space Flight,
pubmed-meshheading:9149714-Weightlessness
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pubmed:year |
1997
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pubmed:articleTitle |
Neocytolysis: physiological down-regulator of red-cell mass.
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pubmed:affiliation |
Baylor College of Medicine, Department of Medicine, Houston, TX 77030, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Review
|