HLA class II alleles: susceptibility or resistance to cystic echinococcosis in Yemeni patients.

This is the first study dealing with the association between HLA alleles and cystic echinococcosis (CE) in Yemeni patients. The present study aimed to detect the association of HLA-DRB(1) alleles and susceptibility or resistance to CE in Yemeni patients by HLA-DRB(1) typing; first by HLA-DRB(1) amplification using PCR then using the allele-specific probing technique based on the reverse hybridization principle. This case-control study was carried out on 66 unrelated patients with confirmed CE and 66 apparently healthy individuals.

Larvicidal, miracidiacidal and cercaricidal activities of the Egyptian plant Iris pseudacorus.

The larvicidal properties of Iris pseudacorus leaves ethanol extract against second-instar larvae of two mosquito species, Culex pipiens and Aedes caspius (Diptera: Culicidae) were studied. It was observed that the larvicidal effect of this extract was dose-dependent. The LC50 values of I.

Detection of IgA anti-Entamoeba histolytica in the patients' saliva.

E. histolytica is a protozoan parasite with worldwide distribution. The diagnosis of this parasite still depends on the microscopic examination.

Selective identification of the pathogenic E. histolytica in fresh stool samples using polymerase chain reaction (PCR).

Stool samples from 93 individuals clinically presumed to have intestinal amoebiasis and subjected to microscopic examination and DNA extraction. The PCR amplification was performed using two sets of primers that differentiate between pathogenic and nonpathogenic Entamoeba DNA. Of 93 clinically positive cases, 51 (54.

Diagnostic potentials of copro-antigen detection based ELISA, compared to microscopy in intestinal amoebiasis.

Ninety three patients clinically presumed to have intestinal amoebiasis were chosen and stool samples were collected from all of them. Stool samples were subjected to microscopic examination and Entamoeba copro-antigens detection using Entamoeba and Entamoeba II tests. Out of 93 clinically positive samples, 51 (54.

Incidence of Parastrongylus cantonensis larvae in different fresh water snails in Dakahlia Governorate.

Samples of snails were collected from different water bodies in Dakahlia governorate to assess a survey on the naturally infected snails and their infection rate with the Parastrongylus cantonensis larvae. The nematode P. cantonensis is associated in the etiology of eosinophilic meningeoencephalitis of man.