We undertook a study of the mechanical transmission of parasitic organisms in cockroaches in the Samutprakarn province of Thailand. In this study, 920 cockroaches were obtained from 18 open-air shopping markets in 5 districts and 1 subdistrict of this province. All cockroaches were captured during their feeding time in their natural habitat. Direct wet smear and modified acid-fast bacilli stain...

Parasitic protozoan infections represent a major health burden in the developing world and contribute significantly to morbidity and mortality. These infections are often associated with considerable variability in clinical presentation. An emerging body of work suggests that the intestinal microbiota may help to explain some of these differences in disease expression. The objective of this min...

Protozoa that parasitize the human intestine include Entamoeba histolytica, Blastocystis hominis, Trichomonas hominis, Cryptosporidium parvum, Giardia lamblia, Balantidium coli, Isospora, and other protozoa. Most intestinal protozoan infections can cause acute or chronic diarrhea in healthy individuals and may result in intractable, life-threatening illness in patients in immunosuppressive stat...

Objective : We aimed to evaluate the prevalence of intestinal parasitic in soil three beaches Mosqueiro Island, located State Pará, Brazil, as well compare frequency helminths and protozoa, pathogenic non-pathogenic parasites according analyzed. Methods This is a cross-sectional analytical study conducted during August September 2019, which 155 samples were analyzed by Hoffman’s method. Results...

Molecular, biochemical and genetic characterization of ornithine decarboxylase, S -adenosylmethionine decarboxylase and spermidine synthase establishes that these polyamine-biosynthetic enzymes are essential for growth and survival of the agents that cause African sleeping sickness, Chagas' disease, leishmaniasis and malaria. These enzymes exhibit features that differ significantly between the ...

Protozoan parasites colonize numerous metazoan hosts and insect vectors through their life cycles, with the need to respond quickly and reversibly while encountering diverse and often hostile ecological niches. To succeed, parasites must also persist within individuals until transmission between hosts is achieved. Several parasitic protozoa cause a huge burden of disease in humans and livestock...

Aspartate aminotransferases have been cloned and expressed from Crithidia fasciculata, Trypanosoma brucei brucei, Giardia intestinalis, and Plasmodium falciparum and have been found to play a role in the final step of methionine regeneration from methylthioadenosine. All five enzymes contain sequence motifs consistent with membership in the Ia subfamily of aminotransferases; the crithidial and ...