INTRODUCTION Giardia lamblia is a flagellated protozoan parasite of man. Only 2 stages i.e. the trophozoite and the cyst forms are observed in the life cycle of Giardia. The Giardia infection is acquired from drinking water or by eating food which is contaminated with cysts. The symptoms of the Giardia infection are foul smelling diarrhoea, flatulence, steatorrhoea, etc. Stool samples from the ...

Giardia intestinalis is a protozoan parasite which infects the gastrointestinal tract of man and animals. It is endemic throughout the world and is transmitted via faecal contamination of drinking water and food. Giardia intestinalis has a relatively simple life cycle alternating between the trophozoite (proliferative form) and the cyst (resting form). The nature of symptoms associated with Gia...

I i t a r a o t A p t t l d s n iardia spp are flagellates that are found in the intestinal tract of humans and domestic and wildlife animals, inluding birds and amphibians, worldwide. The genus Giardia ontains multiple species, which are for the most part morphoogically indistinguishable. Recognized species of this genus are . duodenalis, G. agilis, G. muris, G. microti, G. ardeae, and G. sitt...

An antibody-magnetite method was developed in order to selectively concentrate Giardia cysts from water samples. The indirect technique employed a mouse immunoglobulin G anti-Giardia antibody as a primary antibody and an anti-mouse immunoglobulin G antibody-coated magnetite particle as a secondary labeling reagent. The magnetically labeled cysts were then concentrated by high-gradient magnetic ...

Protozoan parasites of the genus Giardia are one of the earliest lineages of eukaryotic cells. To initiate infection, trophozoites emerge from a cyst in the host. Excystation is blocked by specific cysteine protease inhibitors. Using a biotinylated inhibitor, the target protease was identified and its corresponding gene cloned. The protease was localized to vesicles that release their contents ...

background : the protozoan parasites cryptosporidium spp. and giardia are known to occur widely in both raw and drinking waters. they are two of the causative agents of waterborne out-breaks of gastroenteritis throughout the world. in the present study, a pcr assay and fa were developed for detection of cryptosporidium oocysts and giardia cyst in environmental samples. methods : we have detecte...

There are several drugs available for the treatment of giardiasis in cats, including metronidazole. The purpose of this study was to determine whether metronidazole benzoate administered at a dose of 25 mg/kg, orally, twice a day for 7 days lessens or eliminates Giardia cyst shedding in cats with chronic infection. Twenty-six, adult, laboratory-reared cats were used in this study. Sixteen cats ...

BACKGROUND The protozoan parasites Cryptosporidium spp. and Giardia are known to occur widely in both raw and drinking waters. They are two of the causative agents of waterborne outbreaks of gastroenteritis throughout the world. In the present study, a PCR assay and FA were developed for detection of Cryptosporidium oocysts and Giardia cyst in environmental samples. METHODS We have detected C...

A novel variant-specific surface protein (VSP) from Giardia was identified using the monoclonal antibody 9B10, raised against purified cyst walls. VSP9B10B is preferentially induced during encystation and expressed simultaneously with other VSPs on the surface of encysting trophozoites. These results support the hypothesis that encystation and antigenic variation are processes that are mechanis...

The protozoan parasites Giardia duodenalis, Cryptosporidium spp., and Toxoplasma gondii are pathogens that are resistant to a number of environmental factors and pose significant risks to public health worldwide. Their environmental transmission is closely governed by the physicochemical properties of their cysts (Giardia) and oocysts (Cryptosporidium and Toxoplasma), allowing their transport, ...