Document Detail

Induction of transport of organic anions in Malpighian tubules of Rhodnius.
MedLine Citation:
PMID:  765424     Owner:  NLM     Status:  MEDLINE    
1. The ability of Rhodnius Malpighian tubules to transport organic anions such as p-aminohippuric acid (PAH) and amaranth depends on the physiological state of the insect. Unfed insects progressively lose this ability, but the transport mechanisms rapidly become activated after a blood meal. 2. This induction occurs in adults as well as larval instars and is not prevented by decapitation. 3. No increase in rates of excretion of organic anions follows a meal of Ringer's solution or a single injection of 0-1 mumoles of PAH into the haemolymph. 4. Accelerated PAH excretion is induced in insects fed (a) blood plasma alone or a suspension of red blood cells in saline, (b) solutions of serum albumin or casein, and (c) whole or diluted milk. 5. These results show that the ingestion of a protein-rich meal is sufficient to induce an accelerated transport of organic anions such as PAH and they suggest that this induction is not controlled by a hormone released in response to abdominal distension but depends instead on the continued presence in the haemolymph of some product of digestion of the meal.
S H Maddrell; B O Gardiner
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of experimental biology     Volume:  63     ISSN:  0022-0949     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  1975 Dec 
Date Detail:
Created Date:  1976-04-29     Completed Date:  1976-04-29     Revised Date:  2009-11-03    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  755-61     Citation Subset:  IM    
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MeSH Terms
Age Factors
Amaranth Dye / metabolism*
Aminohippuric Acids / metabolism*
Azo Compounds / metabolism*
Biological Transport
Cloaca / metabolism*
Decerebrate State
Food Deprivation
Malpighian Tubules / metabolism*
Rhodnius / metabolism*
Triatominae / metabolism*
Reg. No./Substance:
0/Aminohippuric Acids; 0/Azo Compounds; 915-67-3/Amaranth Dye

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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