Document Detail


Ocular dynamics of systemic aqueous extracts of Xylopia aethiopica (African guinea pepper) seeds on visually active volunteers.
MedLine Citation:
PMID:  12738077     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Xylopia aethiopica, African guinea pepper, is an angiosperm belonging to the family Annonecae, and used mainly as spice and in traditional medicine. The ocular dynamics of bolus consumption of 300 mg total dose was undertaken on visually active volunteers with a view to finding its ocular effects or complications. Results showed that the aqueous extract of X. aethiopica was neither a miotic nor a mydriatic, but lowered the intraocular pressure (17.48%), reduced the near point of convergence (31.1%) and increased the amplitude of accommodation (8.98%) which are positively correlated (r=0.95). On the other hand, the systemic extract had no effect on the visual acuity at far and near as well as the phoria status at the appropriate distances. The convergence excess resulted in esophoria and the increased amplitude of accommodation placed greater demand on accommodation mechanism without any discomfort. The nonspecific mechanism of action makes it a safer spice which can be exploited in the management of exophoria and raised intraocular pressure (glaucoma) in instances where the efficacy of the older conventional drugs is insufficient.
Authors:
S A Igwe; J C Afonne; S I Ghasi
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  Journal of ethnopharmacology     Volume:  86     ISSN:  0378-8741     ISO Abbreviation:  J Ethnopharmacol     Publication Date:  2003 Jun 
Date Detail:
Created Date:  2003-05-09     Completed Date:  2003-09-09     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7903310     Medline TA:  J Ethnopharmacol     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  139-42     Citation Subset:  IM    
Affiliation:
Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, Abia State University, P.M.B. 2000, Uturu, Nigeria.
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MeSH Terms
Descriptor/Qualifier:
Adult
Annonaceae*
Convergence, Ocular / drug effects*
Humans
Intraocular Pressure / drug effects*
Male
Nigeria
Plant Extracts / isolation & purification,  pharmacology*
Visual Acuity / drug effects*
Chemical
Reg. No./Substance:
0/Plant Extracts

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


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