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dc.contributor.authorMasataka Kogaen_US
dc.contributor.authorSurapol Sa-Nguankiaten_US
dc.contributor.authorChatree Muennooen_US
dc.contributor.authorSomchit Pubampenen_US
dc.contributor.authorSupaporn Nuamtanongen_US
dc.contributor.authorWanna Maipanichen_US
dc.contributor.authorWichit Rojekittikhunen_US
dc.contributor.authorParon Dekumyoyen_US
dc.contributor.authorJitra Waikagulen_US
dc.contributor.otherMahidol Universityen_US
dc.identifier.citationSoutheast Asian Journal of Tropical Medicine and Public Health. Vol.35, No.SUPPL. 1 (2004), 112-115en_US
dc.description.abstractAn investigation was carried out to elucidate the chemotactic attractive behavior of Necator hookworm filariform larvae to inorganic substances in vitro. First, an optimal concentration of these larvae against sodium chloride solutions using the agarose plate assay method was determined. The sodium chloride concentration varied from 0.1 to 1.0 molar solutions. Distilled water ( DW ) was used as control in all experiments. 0.5 molar was found to be an appropriate concentration to examine larval attraction. Then, chloride compounds such as NaCl, KCl, CaCl2 and MgCl2 were tried at 0.5 molar concentration; many larvae were attracted to NaCl and some also to KCl. Therefore, the same experiment was conducted using 0.1 molar chemical concentrations. Many larvae were attracted to NaCl; however, some larvae again moved to KCl. Next, the concentration was changed to a higher range, 1.0 molar, and as a result, NaCl only attracted the larvae. The larvae were not attracted to 1.0 molar of KCl, CaCl2, and MgCl2. Since the chloride anion was found not to attract larvae of this species, another experiment was conducted with 0.5 molar of the sodium compounds, Na2CO3, NaOH, NaHCO3, NaCl, and DW. Na2CO3 had the strongest larval attracting ability. Other sodium compounds also attracted moderate numbers of larvae. In the inorganic substances tried, the sodium cation was found to attract Necator larvae, and thus the sodium cation might have an important role for finding and infecting hosts of Necator hookworm filariform larvae.en_US
dc.rightsMahidol Universityen_US
dc.titleChemotactic attraction of Necator hookworm filariform larvae to sodium chlorideen_US
dc.typeConference Paperen_US
Appears in Collections:Scopus 2001-2005

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