Document Detail

An increase of uricogenesis in the Kuruma shrimp Marsupenaeus japonicus under nitrite stress.
MedLine Citation:
PMID:  15776415     Owner:  NLM     Status:  MEDLINE    
Kuruma shrimp Marsupenaeus japonicus Bate, under the stress of 0.36 and 1.39 mM nitrite at 30 per thousand (parts per thousand, g kg(-1)) for 48 h, were examined for nucleotide-related compounds, specific activities of xanthine dehydrogenase (XDH), xanthine oxidase (XOD), and uricase. The levels of total nucleotide-related compounds, including xanthine and hypoxanthine, in the gill increased directly with ambient nitrite, whereas the levels of total nucleotide-related compounds, including xanthine and hypoxanthine, in the hepatopancreas were inversely related to ambient nitrite. Specific activity of XOD in the hepatopancreas increased directly with ambient nitrite, whereas no significant difference in uricase activity in the hepatopancreas was observed among three treatments. In another experiment, M. japonicus, following 48 h exposure to 0.36 and 1.39 mM nitrite, were examined for ammonia, urea, and urate levels in tissues. Hemolymph urea and exoskeleton urate levels increased directly with ambient nitrite, whereas hemolymph urate and exoskeleton urea levels were inversely related to ambient nitrite. It is concluded that M. japonicus exhibited uricogenesis and uricolysis, and an increase of uricogenesis occurred for the shrimp under nitrite stress. Urate produced in the hepatopancreas was transported and accumulated in the epidermis, and removed along with the exoskeleton at the time of molting.
Sha-Yen Cheng; Won-Chung Lee; Jiann-Chu Chen
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of experimental zoology. Part A, Comparative experimental biology     Volume:  303     ISSN:  1548-8969     ISO Abbreviation:  J. Exp. Zoolog. Part A Comp. Exp. Biol.     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-03-24     Completed Date:  2005-07-19     Revised Date:  2009-10-05    
Medline Journal Info:
Nlm Unique ID:  101168223     Medline TA:  J Exp Zool A Comp Exp Biol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  308-18     Citation Subset:  IM    
Copyright Information:
(c) 2005 Wiley-Liss, Inc.
Life and Resource Sciences, National Taiwan Ocean University, Keelung, Taiwan, 202, ROC.
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MeSH Terms
Ammonia / blood,  metabolism
Enzyme Activation / drug effects
Gills / metabolism*
Hepatopancreas / metabolism
Hypoxanthine / metabolism
Nitrites / toxicity*
Penaeidae / enzymology*
Urate Oxidase / metabolism*
Urea / blood,  metabolism
Uric Acid / blood,  metabolism
Xanthine / metabolism
Xanthine Dehydrogenase / metabolism*
Xanthine Oxidase / metabolism*
Reg. No./Substance:
0/Nitrites; 57-13-6/Urea; 68-94-0/Hypoxanthine; 69-89-6/Xanthine; 69-93-2/Uric Acid; 7664-41-7/Ammonia; EC Dehydrogenase; EC Oxidase; EC Oxidase

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