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The conjugated plasma proteins of the American cockroach. II. Changes during the molting and clotting processes.
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MedLine Citation:
PMID:  14446368     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Evidence has been presented for the possible transport function of conjugated roach plasma proteins during molting. Extensive changes in these proteins are evident during the premolt stage. The remainder of the instar appears to be devoted to a gradual return to the intermolt stage. This recovery process is characterized principally by a transformation of less mobile lipoproteins to lipoproteins of higher electrophoretic mobilities and may be indicative of a lipoprotein-lipase reaction in insects. This transformation also appears to give rise to a second sex-specific lipoprotein. Significant changes in the glycoproteins at the premolt and ecdysial stages may indicate transport of carbohydrate for storage or utilization. A total of six fractions has been shown to occur in roach plasma in the period from one molt to the next. The process of clotting appeared to be concerned primarily with the blood lipoproteins. These protein fractions reacted to form two new lipoproteins, one of which was the relatively insoluble coagulum network. The second major protein fraction appearing as a result of the coagulation process also was a lipoprotein which contained a lower concentration of carbohydrate than the clot. A possible method of assaying or screening new anticoagulants for insect blood is proposed.
Authors:
A N SIAKOTOS
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of general physiology     Volume:  43     ISSN:  0022-1295     ISO Abbreviation:  J. Gen. Physiol.     Publication Date:  1960 May 
Date Detail:
Created Date:  1960-12-01     Completed Date:  1998-11-01     Revised Date:  2010-06-22    
Medline Journal Info:
Nlm Unique ID:  2985110R     Medline TA:  J Gen Physiol     Country:  Not Available    
Other Details:
Languages:  eng     Pagination:  1015-30     Citation Subset:  OM    
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MeSH Terms
Descriptor/Qualifier:
Blood Proteins*
Insects*
Chemical
Reg. No./Substance:
0/Blood Proteins
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Full Text
Journal Information
Journal ID (nlm-ta): J Gen Physiol
ISSN: 0022-1295
ISSN: 1540-7748
Publisher: The Rockefeller University Press
Article Information
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Copyright © Copyright, 1960, by The Rockefeller Institute
Received Day: 23 Month: 7 Year: 1959
Print publication date: Day: 1 Month: 5 Year: 1960
Volume: 43 Issue: 5
First Page: 1015 Last Page: 1030
ID: 2195046
PubMed Id: 14446368

The Conjugated Plasma Proteins of the American Cockroach : II. Changes during the molting and clotting processes
A. N. Siakotos
From Department of Entomology, Cornell University, Ithaca, New York.
Dr. Siakotos' present address is Physiology Division, Directorate of Medical Research, Chemical Warfare Laboratories, Army Chemical Center, Maryland


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