new modified technique for concentrating intestinal parasites

The present study evaluated the diagnostic performance of a modification of the formol ethyl acetate concentration technique, with the addition of 25% acetic acid as compared with formol ethyl acetate concentration technique [FEA] and fecal parasite concentrator kit Fresh fecal material, free of ova and parasites, was pooled in a ratio of 1:4 with 10% buffered formalin to prepare a standardized specimen. Sufficient volumes of formalin-fixed suspension of Giardia lamblia cysts, Entamoeba histolytica cysts, Cryptosporidium oocysts; Ascaris lumbricoides ova, Necator americanus, Taenia spp. and Hymenolepis nana were used to seed individually 3-ml portions of the fecal specimen. The 3-ml samples were split in three parts, one processed by FEA, a second part with FPC and the third part by the modified FAEA; six smears from each sediment were examined by light microscopy. FAEA technique gave the clearest sediments and the highest numbers in most of the parasites. FAEA resulted in a higher percent-tage of H. nana, Taenia spp., N. americanus, and G. lamblia per one ml of stool compared with FEA method. When compared with FPC, the same results were achieved in addition to E. histolytica

Multilocus genetic analysis of cryptosporidium isolates from Saudi Arabia

A total of 35 Cryptosporidium positive samples were collected from children in Jeddah city. The samples were microscopically examined with Ziehl Neelsen [ZN] and Auramin phenol [AP] staining methods. Cryptosporidium antigen was detected in the faecal samples by using the Cryptosporidium ELISA kit. Cryptosporidium sp. were identified by targeting an 840 bp of the hyper-variable region of the 18S rRNA gene and about 550 of the first domain [N terminal] of the COWP gene. The subgenotypic identification of C. parvum and C. hominis isolates was done by targeting the sporozoite antigen gp 15/45 760 gene. Four sp. were identified; C. hominis 13/35 [37%], C. parvum 15/35 [42.9%], C. meleagridis 1/35[2.9%] and C. muris 1/35 [2.9%]. One isolate was a mixed infection of C. parvum and C. hominis

Farm animals' fascioliasis in Ezbat El-Bakly [tamyia center] Al-Fayoum governorate

To continue the study on fascioliasis in Tamyia Center, some farm animals were investigated for natural infection with Fasciola species by stool examination. The results showed 40% infection in sheep, 20% in buffalos, 6.7% in donkeys and zero% in horses. The overall percentage of infection was 25.5. The sheep [total dose 1800 mg] and the donkey [total dose [4500 mg.] were successfully treated with Mirajid R. On the other hand, one buffalo was successfully treated by a total dose 7500mg, the second one did not cured, but the eggs deposited per gm markedly decreased

Trichomoniasis among women with vaginal discharge in Jeddah city, Saudi Arabia

During the year of 2003, vaginal discharge specimens were collected from 1767 women aged [15-50] in 6 cardinal hospitals in Jeddah city of Saudi Arabia. The samples were examined for Trichomonas vagincilis, a prevalence rate of 12 [0.7%] were positive. Demographic characters did not show significant relation to the infection rate. All accompanied symptoms were insignificant [P > 0.05] except the vaginal consistency which was significant [P < 0.05]. The studied risk factors were insignificant to the T. vaginalis infection. So, the symptoms were neither reliable to diagnose the vaginal trichomoniasis nor specific underlying factors provoke the infection