Letter: High-level of Heteroplasmy in the Mitochondrial Cox1- Minichromosome of the Human Body Louse, Pediculus humanus, and the Human Head Louse, Pediculus capitis

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Letter: High-level of Heteroplasmy in the Mitochondrial Cox1- Minichromosome of the Human Body Louse, Pediculus humanus, and the Human Head Louse, Pediculus capitis

The mitochondrial (mt) genome of bilateral animals typically consists of a single chromosome, ~16 kb long, and contains 37 genes. Variation in mt gene sequence within an individual, i.e. heteroplasmy, is common in bilateral animals but usually occurs at very low levels. In the lineage that led to the human body louse, the typical mt chromosome has fragmented into 18 minichromosomes: each minich...

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Prevalence and Risk Factors Associated with Head Louse (Pediculus humanus capitis) in Central Iran

Background  Recognition of head lice prevalence and related risk factors contributing in spreading the disease is a step forward to the control of this important health problem. This survey was done to determine prevalence and risk factors associated with head louse (Pediculus Humanus Capitis) in Central Iran. Materials and Methods In this descriptive–analytic study, a total of 38,237 suspected...

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The Experimental Infection of the Human Body Louse, Pediculus Humanus Corporis, with Murine and Epidemic Louse-borne Typhus Strains

Experiments are described which demonstrate that human body lice (Pediculus humanus corporis), were infected experimentally with murine and epidemic louse-borne strains of typhus fever by feeding on suitably prepared rabbits. Details of the two methods of infection, the "bleb technique" and the "I.V. technique," are presented. It is concluded that the experimental infection of human lice with t...

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Toxicity of Five Herbal Extracts against Head Louse (Pediculus Humanus Capitis De Geer.: Phthiraptera) in Vitro

Head lice infestation caused by Pediculus humanus capitis De Geer. (Phthiraptera) is one of the most important public health problem in children worldwide. Currently, head lice resistance to chemical pediculicide are increasing, thus new alternative pediculicides from herb or plant are needed for head lice treatment. The aim of this study were to evaluate toxicity of five herbal extracts from A...

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Esterase-mediated malathion resistance in the human head louse, Pediculus capitis (Anoplura: Pediculidae)

Resistance in a dual malathionand permethrin-resistant head louse strain (BR-HL) was studied. BR-HL was 3.6and 3.7-fold more resistant to malathion and permethrin, respectively, compared to insecticide-susceptible EC-HL. S,S,S-Tributylphosphorotrithioate synergized malathion toxicity by 2.1-fold but not permethrin toxicity in BR-HL. Piperonyl butoxide did not synergize malathion or permethrin t...

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ژورنال

عنوان ژورنال: The Open Genomics Journal

سال: 2012

ISSN: 1875-693X

DOI: 10.2174/1875693x01205010014