Serum Cohn fraction IV-1 supports the growth of Giardia lamblia in vitro

Opsonization in vitro of Giardia lamblia trophozoites.

The ability of peritoneal rabbit macrophages from immunized and nonimmunized animals to phagocytose Giardia lamblia trophozoites in the presence of serum was studied and compared in an in vitro system. The rabbits which served as the source of immune serum and macrophages were injected repeatedly at multiple sites (intramuscularly, subcutaneously, and intradermally) with a mixture of G. lamblia...

Effect of Cecropin–melittin Chimeric Peptide (CM11) on Trophozoite of Giardia lamblia In Vitro

Background and purpose: Antimicrobial peptides (AMP) are one of the most diverse antimicrobial compounds that have received much attention due to the development of drug resistance of pathogens to conventional antibiotics. But, few studies have evaluated anti-parasitic properties of AMP. The present study was conducted to compare the effect of a cecropin–melittin chimeric peptide (CM11) and met...

Giardia Lamblia.

Small-intestinal factors promote encystation of Giardia lamblia in vitro.

Bile salts and fatty acids stimulated differentiation of cultured Giardia lamblia trophozoites into water-resistant cysts at the slightly alkaline pH of the small intestinal lumen. Maximum encystation occurred at pH 7.8. Thus, specific small-intestinal factors may influence encystation in vivo as well as in vitro.

The cytoskeleton of Giardia lamblia.

Giardia lamblia is a ubiquitous intestinal pathogen of mammals. Evolutionary studies have also defined it as a member of one of the earliest diverging eukaryotic lineages that we are able to cultivate and study in the laboratory. Despite early recognition of its striking structure resembling a half pear endowed with eight flagella and a unique ventral disk, a molecular understanding of the cyto...