A survey of 95 wild rats which were captured from various locations was conducted to determine the diversity and distribution of ectoparasites and endoparasites infesting wild rat population around the city of Ipoh and Kuala Lumpur. The rodents captured were Rat tus norvegicus and post mortem was carried out immediately after capture, with skin and organs examined for parasite infection. Ectoparasites recovered were blood sucking louse (Polyplax spinulosa) and mites (Myocoptes musculinus). Endoparasites recovered were nematodes (Aspiculuris tetraptera, Trichuris sp., and two strongyles, one of which is Strongyloides sp.) And three intestinal protozoan parasites (Blastocystis sp., Trichomonas sp., and a coccidia). Low diversity of ecto- and endoparasites were observed infecting wild rat population caught in Ipoh as compared to Kuala Lumpur.

OBJECTIVE To investigate the effects of specific cysteine protease (CP) inhibitors on cytopathic changes to porcine intestinal epithelial cells induced by Tritrichomonas foetus isolated from naturally infected cats. SAMPLE T foetus isolates from 4 naturally infected cats and nontransformed porcine intestinal epithelial cells. PROCEDURES T foetus isolates were treated with or without 0.1 to 1.0mM of the CP inhibitors antipain, cystatin, leupeptin, and chymostatin and the vinyl sulfone inhibitors WRR-483 and K11777. In-gel gelatin zymography was performed to evaluate the effects of these inhibitors on CP activity of T foetus isolates. Each treated or untreated isolate was also cocultured with monolayers of porcine intestinal epithelial cells for 24 hours, and cytopathic effects of T foetus were evaluated by light microscopy and crystal violet spectrophotometry. RESULTS Results of in-gel gelatin zymography suggested an ability of WRR-483, K11777, and cystatin to target specific zones of CP activity of the T foetus isolates. These inhibitors had no effect on T foetus growth, and the cytopathic changes to the intestinal epithelium induced by all 4 T foetus isolates were significantly inhibited. CONCLUSIONS AND CLINICAL RELEVANCE This study revealed that certain protease inhibitors were capable of inhibiting regions of CP activity (which has been suggested to cause intestinal cell damage in cats) in T foetus organisms and of ameliorating T foetus–induced cytopathic changes to porcine intestinal epithelium in vitro. Although additional research is needed, these inhibitors might be useful in the treatment of cats with trichomonosis.

Four virgin heifers were experimentally inoculated intravaginally with 7 X 10(6) Tritrichomonas foetus, and 2 heifers served as uninfected controls. The durations of infection were 13, 20, 21, and 28 weeks, respectively. An ELISA that used whole T foetus antigen was used to detect anti-T foetus immunoglobulins (IgA, IgG1, IgG2, and IgM) in vaginal, cervical, and uterine secretions, and sera during the course of infection. The vaginal and cervical antibody responses were characterized by significantly increased T foetus-specific IgA and IgG1 at 7 to 9 weeks of infection, whereas uterine IgA and IgG1 responses peaked at 10 to 12 weeks. The antibody response in serum was predominantly of the IgG1 and IgG2 subclasses. In all reproductive tract regions, IgA persisted at least until the time of T foetus clearance, and usually longer. The next most persistent isotype was IgG1, lasting longest in the vagina, then cervix, and for the shortest time in the uterus. In local secretions, IgG2 was seen only transiently, increasing at weeks 13 to 15 in the vagina, and at weeks 10 to 12 in the cervix. Little IgM, relative to that present before infection, was detected in any secretion or serum, although cervical secretions had the greatest amount. Eight to 12 weeks after clearance, the 4 experimental heifers were inoculated intravaginally with 1 x 10(5) T foetus, transient infections (2 to 3 weeks' duration) were established in only 2 of 4 heifers, as determined by culturing of reproductive tract secretions. The lag times of antibody responses during this reinfection were shorter than in the initial infection, and ELISA optical densities were at least as high as during the primary infection, suggesting an anamnestic response.

he present study was carried out to represent a field problem in squabs of domestic pigeons (columba livia) at Ismailia Province. Squabs were grossly examined and showed typical lesions including yellowish caseous, fibronecrotic patches in mouth due to infection with T. gallinae. Forty squabs were collected and tested individually for the presence of Trichomonas gallinae (T. gallinae). Squabs were divided into equal four groups, the 1st was un-infected control group, the 2nd was T. gallinae infected untreated group, the 3rd and the 4th groups were T. gallinae infected and treated with metronidazole. The obtained results showed that the mortality (%) were 0, 50, 20 and 30 % in 1st, 2nd, 3rd and 4th group, respectively. Body weight was significantly reduced in all groups, although the drugs improved the weight reduction as compared to pre-treatment. Organs' weights were significantly increased after treatment as compared with the control group. Serum biochemical analysis revealed significant elevation in total protein, globulins; β- globulin and γ- globulin but albumin , α-globulin levels and A/G ratio were significantly reduced in infected squabs and increased in treated groups. Serum urea, creatinine and uric acid levels were increased, while, Serum glucose , cholesterol Na, K, Ca, P, Mg and serum iron as well as plasma ChE activity were decreased in both treated and infected groups. Serum AST, ALT, LD, γ -GGT, CK, AP activities were significantly increased in infected groups, Destructive changes in buccal cavity, hyperemia in blood vessels, necrotic changes in the liver with leucocytic infiltration and demylination of brain with preivascular oedema were observed.