Molecular composition of the louse sheath

被引:26
作者
Burkhart, CN
Stankiewicz, BA
Pchalek, I
Kruge, MA
Burkhart, CG
机构
[1] Med Coll Ohio, Dept Med, Sylvania, OH 43560 USA
[2] Univ Toledo, Dept Biol, Toledo, OH 43606 USA
[3] Shell E&P Technol Co, Houston, TX 77025 USA
[4] Lourdes Coll, Dept Chem, Sylvania, OH 43560 USA
[5] So Illinois Univ, Dept Geol, Carbondale, IL 62901 USA
关键词
D O I
10.2307/3285796
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
Plash pyrolysis-gas chromatography/mass spectrometry was used to assess the chemical composition of the head louse's nit sheath. The pyrolyzate of the female insect's secretions, which form a cement-like cylinder holding the egg onto the hair, is dominated by amino acid derivatives and fatty acids. No chitin-specific compounds were detected in the sheath. These results, contrary to previous reports, show that the polymeric complex of the sheath is composed of protein-aceous moieties, possibly cross-linked to aliphatic components. This study constitutes the first chemical characterization of the pyrolysis products of insect (louse) glue and unequivocally confirms that louse sheaths are not chitinous, as suggested by earlier histochemical studies. Development of agents that might loosen nits from the hair shaft is dependent on research that addresses the chemical composition of the nit sheath.
引用
收藏
页码:559 / 561
页数:3
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