Cheeraratana Cheeramakaraจีระรัตน์ จีระมะกรApichart Nontprasertอภิชาต นนท์ประเสริฐKriyaporn Songmuaengกริยาพร สองเมืองWanyarat Thanomsakวัลยารัตน์ ถนอมศักดิ์Chutatip Siripanthจุฑาทิพ ศิริพันธุ์Nopachai Suthisaiนภชัย สุทธิสัยCharnnarong Sanghirunชาญณรงค์ แสงหิรัญMahidol University. Faculty of Tropical Medicine. Department of Tropical RadioisotopeMahidol University. Faculty of Tropical Medicine. Department of Clinical Tropical MedicineMahidol University. Faculty of Tropical Medicine. Department of Protozoology2016-02-082021-08-302016-02-082021-08-302016-02-082004https://repository.li.mahidol.ac.th/handle/20.500.14594/63351Joint International Tropical Medicine Meeting 2004: Ambassador Hotel, Thailand 29 November-1 December 2004: abstract. Bangkok: Faculty of Tropical Medicine, Mahidol University; 2004. p.217.Axenic culture of Giardia lamblia trophozites in vitro was conducted from patients infected with Giardia lamblia. The cholinesterase (ChE) and acetylcholinesterase (AChE) activities were determined in cultured Giardia trophozoites. The enzyme activities were found in boh tissue-bound and tissue-free forms. There was low ChE and AChE enzyme activities in trophozoites (1.6095 ± 1.0981; 0.9626 ± 0.1322; 0.1387 ± 0.0783; 0.0752 ± 0.0877 Units/ mg protein, respectively). The tissue-bound and tissue-free ChE enzymes were found in a greater amount than tissue-bound and tissue-free AChE enzymes. The presence of these enzymesin Giardia may involved in the motility of Giardia trophozoites.engMahidol UniversityAcetylcholinesteraseCholinesteraseProceeding Poster