Co-infection may affect transmission and recovery from infection, but remains an understudied element of disease ecology, particularly with regard to antagonism between parasites sharing a host. Helminth and giardia infections are often endemic in the same populations and both occupy the small intestine; yet few studies have examined interactions between these parasites. We report on helminth-g...

The purpose of our study was to investigate the hematological status, vitamin B12 and folic acid absorption and intestinal pathology after Giardia lamblia infection in a rat model. Adult Wistar rats were assigned randomly to receive human giardia cysts orally in the amount of 5 x 10(5) or 1.0 x 10(6) cysts, or none in the controls. The results showed that all the rats injected with giardia cyst...

Giardiasis is an important human parasitic disease. Giardia is a genus composed of binuclear flagellate protozoa. Giardia duodenalis is a parasitic species for a wide range of vertebrates, including humans. Heterogeneity in G. duodenalis has been shown by serological, biochemical, and molecular analysis. In the present study, the possible genetic similarity between Giardia in sheep and humansan...

Factors, and Section 6 Risk Assessment. Section 7 is a summary of the information and research recommendations. Section 8 lists references used to prepare the addendum. Primary references are provided except in instances where information about Giardia and giardiasis has already been summarized in EPA's current Drinking Water Criteria Document on Giardia (U.S. EPA, 1998) or previous criteria do...

Previous analyses of the Giardia genome exposed numerous genes required for meiosis, suggesting that sexual reproduction is occurring in this early-diverging eukaryote. A new study now uncovers direct genetic evidence for recombination in Giardia populations.

conclusions we concluded that ozonized organic extra-virgin olive oil was a growth inhibitor of giardia cysts, and concerning its compatibility with a biological system, it is recommended for further clinical trials. objectives this study was conducted to evaluate the effect of ozonized organic extra-virgin olive oil on the cyst of g. lamblia. methods the olive oil was ozonized based on interna...

The competitive interactions of genetically distinct isolates of Giardia duodenalis with different growth rates were studied in vitro. Electrophoretic analysis of mixed cultures showed that competition between 2 cloned isolates occurs under normal in vitro culture conditions, with faster-growing isolates outcompeting those with slower growth rates. The addition of sublethal concentrations of me...

Most cell cycle regulation research has been conducted in model organisms representing a very small part of the eukaryotic domain. The highly divergent human pathogen Giardia intestinalis is ideal for studying the conservation of eukaryotic pathways. Although Giardia has many cell cycle regulatory components, its genome lacks all anaphase-promoting complex (APC) components. In the present study...