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...

Giardia and Cryptosporidium are the most frequent enteric protozoa causing gastroenteritis in humans worldwide. Intense recreational activity at Portuguese river beaches triggered the opportunity for a 2-year seasonal survey of 19 large river basin beaches. A total of 74 samples were collected and processed according to USEPA Method 1623 to detect Cryptosporidium and Giardia (oo)cysts. Faecal i...

BACKGROUND Functional gastrointestinal disorders (FGID) may occur following acute gastroenteritis. This long-term complication has previously not been described after infection with the non-invasive protozoan Giardia lamblia. This study aims to characterize persistent abdominal symptoms elicited by Giardia infection according to Rome II criteria and symptoms scores. METHODS Structured intervi...

RNAs processing other RNAs is very general in eukaryotes, but is not clear to what extent it is ancestral to eukaryotes. Here we focus on pre-mRNA splicing, one of the most important RNA-processing mechanisms in eukaryotes. In most eukaryotes splicing is predominantly catalysed by the major spliceosome complex, which consists of five uridine-rich small nuclear RNAs (U-snRNAs) and over 200 prote...