Document Detail

Ovicidal effects of a neem seed extract preparation on eggs of body and head lice.
MedLine Citation:
PMID:  21484346     Owner:  NLM     Status:  Publisher    
The eggs (nits) of head and body lice (Pediculus humanus capitis, Pediculus humanus corporis) were incubated for 5, 10, 15, 20, 30 or 45 min into a neem seed extract contained in a fine shampoo formulation (e.g. Wash Away® Louse), which is known for its significant killing effects of larvae and adults of head lice. The aim of the study was to test whether the developmental stages inside the eggs are also killed after the incubation into the shampoo. It was found that an incubation time of only 5 min was sufficient to prohibit any hatching of larvae, whilst 93 ± 4% of the larvae in the untreated controls of body lice hatched respectively about 76% of the controls in the case of head lice. Apparently, the neem-based shampoo blocked the aeropyles of the eggs, thus preventing the embryos of both races of lice from accessing oxygen and from releasing carbon dioxide. Thus, this product offers a complete cure from head lice upon a single treatment, if the lice (motile stages, eggs) are fully covered for about 10 min.
Heinz Mehlhorn; Fathy Abdel-Ghaffar; Khaled A S Al-Rasheid; Jürgen Schmidt; Margit Semmler
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-12
Journal Detail:
Title:  Parasitology research     Volume:  -     ISSN:  1432-1955     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8703571     Medline TA:  Parasitol Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department Zoology and Parasitology, Heinrich Heine University, 40225, Düsseldorf, Germany,
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