Document Detail

Hepatoprotection by chemical constituents of the marine brown alga Spatoglossum variabile: A relation to free radical scavenging potential.
MedLine Citation:
PMID:  23406359     Owner:  NLM     Status:  In-Data-Review    
Context: In the course of searching hepatoprotective agents from natural sources, the protective effect of chemical constituents of the marine brown alga Spatoglossum variabile Figaro et DE Notar (Dictyoaceae) against CCl(4)-induced liver damage in Wistar rats was investigated. The compounds were first investigated for in vitro radical scavenging potential and were also tested for β-glucuronidase inhibition to further explore the relationship between hepatoprotection and antiradical potential. Methods: The compounds cinnamic acid esters 1 and 2 and aurone derivatives 3 and 4 were first investigated for in vitro radical scavenging potential against 1,1-diphenyl-2-picrylhydrazyl radicals (DPPH), and superoxide anion radicals. In vivo hepatoprotective studies were performed in seven groups (n = 6) of Wistar rats. The test groups were pretreated with compounds (10 mg/kg body weight, po) orally for 30 min before the intraperitoneal administration of a dose of 20% CCl(4) diluted with dietary cooking oil. Moreover, compounds were also tested for β-glucuronidase inhibition to explore the relationship between hepatoprotection and radical scavenging potential. Results: The test compounds 1-4 were found to exhibit antiradical activity against 1,1-diphenyl-2-picrylhydrazyl radicals with IC(50) values ranging between 54 and 138 µM, whereas aurone derivatives 3 and 4 additionally exhibited superoxide anion scavenging effects with IC(50) values of 95 and 87 µM, respectively. In addition, these compounds were found to be weak inhibitors of xanthine oxidase (IC(50) ≥1000 µM). In animal model, pretreatment with compounds 2-4 significantly blocked the CCl(4)-induced increase in the levels of the serum biochemical markers. Conclusion: It appears that the hepatoprotection afforded by these compounds was mainly due to their radical scavenging activity that protected the cells from the free radicals generated by CCl(4)-induced hepatotoxicity.
Talat Makhmoor; Suad Naheed; Shahida Shujaat; Saima Jalil; Safdar Hayat; M Iqbal Choudhary; Khalid M Khan; Junaid M Alam; Samina Nazir
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pharmaceutical biology     Volume:  51     ISSN:  1744-5116     ISO Abbreviation:  Pharm Biol     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-02-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9812552     Medline TA:  Pharm Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  383-90     Citation Subset:  IM    
Dr Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi ; Karachi , Pakistan.
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