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Background: Interleukin 18 (IL-18) exerts pleiotropic roles in many inflammatory-related diseases including parasitic infection. Previous studies have demonstrated the promising therapeutic potential of modulating IL-18 bioactivity in various pathological conditions. However, its involvement during malaria infection has yet to be established. In this study, we demonstrated the effect of modulating IL-18 on the histopathological conditions of malaria infected mice. Methods: Plasmodium berghei ANKA infection in male ICR mice was used as a model for malaria infection. Modulation of IL-18 release was carried out by treatment of malarial mice with recombinant mouse IL-18 (rmIL-18) and recombinant mouse IL-18 Fc chimera (rmIL-18Fc) intravenously. Histopathological study and analysis were performed on major organs including brain, liver, spleen, lungs and kidney. Results: Treatment with rmIL-18Fc resulted in significant improvements on the histopathological conditions of the organs in malaria-infected mice. Conclusion: IL-18 is an important mediator of malaria pathogenesis and targeting IL-18 could prove beneficial in malaria-infected host. [ABSTRACT FROM AUTHOR]

Purpose: To evaluate the activity of the ethanol leaf extract of Piper sarmentosum against toxoplasmosis. Methods: An in vitro anti-Toxoplasma study was conducted using Vero cells as a host for T. gondii. Clindamycin used as the reference drug. Light microscopy technique was used to study the in situ antiparasitic activity of T. gondii. Non-toxic concentrations of the ethanol extract for Vero cells were determined by methyl thiazolyl tetrazolium (MTT) cell proliferation. The presence of Toxoplasma gondii was observed by Giemsa staining. Results: The results showed that significant (p < 0.05) anti-toxoplasma activity of the ethanol extract, though lower than that of clindamycin (control drug), was achieved, with half-maximal inhibitory concentration (IC50) of 12.4 and 7.2 μg/mL for the extract and reference drug, respectively. After 24 hours of exposure to the extract, the inoculated Vero cells showed lower parasitemia and no remarkable morphological changes. Conclusion: The findings demonstrate that the ethanol extract of P. sarmentosum leaves are active against toxoplasmosis in vitro. However, further studies are required to determine the therapeutic significance of these findings in vivo. [ABSTRACT FROM AUTHOR]

Introduction: Worm infection is one of the major global public health problems especially among rural communities. Objectives: to determine the prevalence of intestinal worm infection and factors associated among Semai Aboriginal children aged between 6 to 13 years in Tapah, Malaysia. Methods: A cross-sectional study design was used in this study. The estimated sample size was 508. Data was collected using a validated pretested questionnaire. Faecal samples were also examined. Data was analysed using SPSS version 22. Results: The response rate was 80.9%. The overall mean age of the 411 respondents was 10.1 years(95% CI = 9.89, 10.22). Majority (71.5%) were poor. Prevalence of intestinal worm infections was 60.8% and 57.2% had multiple infections. The multiple logistic regression analysis showed that those with poor hygiene practices were 2.18 times the odds of worm infection when compared with children with good hygiene practices (95% CI = 1.4, 3.4). Similarly, poor attitudes towards prevention of worm infection increased the odds of having worm infection by 1.62 times among Orang Asli children. Children living without toilets had 2.45 times higher odds as compared with those who had proper toilets. Absence of river near by these areas where there is no safe water supply also increases the risk of worm infection among children by 1.84 times among Orang Asli children. Conclusions: the prevalence of worm infection is still very high among rural Aboriginal community. Current control measures should be reassessed to enable introduction of effective measures to reduce the worm infection among Orang Asli children. [ABSTRACT FROM AUTHOR]

Purpose: To detect Strongyloides ratti in faecal samples using conventional methods and to confirm the identification using a sensitive and specific method, namely, polymerase chain reaction (PCR). Methods: A PCR method targeting the small subunit of the rRNA gene was performed in this study for the detection of DNA from Strongyloides ratti (an animal model of S. stercoralis) in faecal samples of wild Brown rats, Rattus norvegicus. Results: Strongyloides ratti was detected in 34.2 % of collected rats by different conventional techniques and confirmed by PCR. The essay presented 100 % sensitivity with Strongyloides universal primer. Conclusion: The findings of this study suggest that the application of PCR with universal primer is a very sensitive methodology to detect S. ratti in faecal material of wild rats infected even with very low parasite burden. [ABSTRACT FROM AUTHOR]