| Intrasplenic blood cell kinetics in man before and after brief maximal exercise. | |
| | |
MedLine Citation:
|
PMID: 1325321 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
1. After a 4 min period of maximal exercise in 10 normal subjects (14 studies), there was a consistent decrease in total blood volume and a consistent increase in erythrocyte indices, which were maximal immediately after exercise. Peripheral platelet and leucocyte counts increased, but did not reach maximal values until 5-10 min after the end of exercise. 2. The distributions of 99mTc-labelled erythrocytes (five studies), 111In-labelled platelets (five studies) and 111In-labelled granulocytes (four studies) were monitored with a gamma-camera immediately after injection and before and after maximal exercise performed 60 min after injection. 3. Labelled erythrocytes equilibrated rapidly between the spleen and circulating blood after injection, whereas labelled platelets and granulocytes equilibrated more slowly. After exercise, each cell type was released from the spleen with a time course that was the reciprocal of the time course of the corresponding cell count in peripheral blood. Thus, whereas the radioactivity of 99mTc-labelled erythrocytes in the spleen, which fell to 0.46 (SD 0.09) of the pre-exercise value, increased towards its baseline value as soon as exercise was completed, the radioactivities of 111In-labelled platelets and 111In-labelled granulocytes decreased, to respective minimum values of 0.61 (0.09) and 0.63 (0.09) of the pre-exercise levels, 5-10 min after the end of exercise. The exercise-induced changes in lung radioactivity for each cell type, and their time courses, broadly reflected those in the corresponding cell counts in peripheral blood. Liver radioactivity tended to decrease for each cell type.(ABSTRACT TRUNCATED AT 250 WORDS) |
| | |
Authors:
|
P Allsop; A M Peters; R N Arnot; A W Stuttle; M Deenmamode; M E Gwilliam; M J Myers; G M Hall |
Publication Detail:
|
Type: Clinical Trial; Comparative Study; Controlled Clinical Trial; Journal Article |
Journal Detail:
|
Title: Clinical science (London, England : 1979) Volume: 83 ISSN: 0143-5221 ISO Abbreviation: Clin. Sci. Publication Date: 1992 Jul |
Date Detail:
|
Created Date: 1992-10-06 Completed Date: 1992-10-06 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 7905731 Medline TA: Clin Sci (Lond) Country: ENGLAND |
Other Details:
|
Languages: eng Pagination: 47-54 Citation Subset: IM |
Affiliation:
|
Department of Anaesthetics, Royal Postgraduate Medical School, Hammersmith Hospital, London, U.K. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Cell Count Erythrocyte Indices / physiology Erythrocytes / physiology* Exercise / physiology* Granulocytes / cytology Humans Kinetics Leukocyte Count Liver / cytology Lung / cytology Male Platelet Count Spleen / cytology, physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Systemic and splanchnic haemodynamic effects of pentifylline in rats with portal hypertension.
Next Document: Measurement of pelvic blood flow changes in response to posture in normal subjects and in women with...