Despite the synergistic effect of Opisthorchis viverrini and Helicobacter pylori co-infection on pathogenesis of severe hepatobiliary abnormalities (HBA) including advanced periductal fibrosis and replace with cholangiocarcinoma (CCA) have been established, the immune response to H. pylori in O. viverrini infected population has never been explored. Hence, this study aimed to investigate the antibody responses to 2 immunogenic H. pylori proteins in O. viverrini-infected patients with HBA and CCA. The risk analysis by multinomial logistic regression revealed that GroEL seropositivity was associated with higher risks of hepatobiliary abnormalities and CCA with adjusted odds ratios (95% confidence intervals) of 2.11 (95% CI=1.20-3.71, P=0.008) and 2.13 (95% CI=1.21-3.75, P=0.009), respectively. These findings indicate that GroEL seropositivity might be a biomarker for early detection of O. viverrini associated HBA and CCA.
The use of synthetic chemical pediculicides is known to have side effects and the occurrence of resistance so plant-based pediculicides are needed to kill Ph. capitis. Eucalyptus and lime oil are known to have an effect in killing Ph. capitis. The purpose of this study was to determine the effectiveness of the combination of eucalyptus and lime oil on the mortality of Ph. capitis. This study was conducted in a true experimental with a post-test-only control group design in May 2021. This study consisted of 5 treatment groups, one group as a positive control (permethrin 1%), one group as a negative control (aquadest), and 3 groups received treatment with a combination of eucalyptus and lime oil in the proportions of 1:3 (25 ml of eucalyptus oil: 75 ml of lime juice), 1:1 (50 ml of eucalyptus oil: 50 ml of lime juice) and 3: 1 (75 ml eucalyptus oil: 25 ml lime juice). It was repeated 3 times so that the total sample was 150 Ph. capitis which was observed every 5 minutes for 1 hour. The research data were analyzed using the Kruskal-Wallis test and continued with the Posthoc Mann-Whitney U test. Mortality of Ph. capitis in the combination group the most effective was the combination of 75% eucalyptus oil and 25% lime oil in the 5th-minute observation of 100% mortality compared to the control group and other groups.
Basil leaf (Ocimum sanctum Linn) are known to have the ability as natural larvicides because there are various compounds including tannins, eugenol, flavonoids, essential oils, hexauronic acid, saponins, pentose, xylose, metal homocytic acid, mulludistin, ursolic acid and methyl clavical. This study aims to determine the effectiveness of basil leaf extract (O. sanctum Linn) on mortality of Aedes agypti larvae. This research is a true experimental type with posttest only with control group design. Aedes aegypti larvae obtained from Balitbangkes Banjarnegara were used in this study as many as 450 larvae. This study consisted of 6 groups with 2 control groups (positive control/temefos 1% and negative control/distilled water) and 4 other groups receiving treatment with basil leaf extract concentrations of 1.5%, 1.8%, 2.1%, and 2.4%. Each group contained 25 larvae of Ae. aegypti with three repetitions and observation time with 10th, 40th, 60th, 120th, 240, 720, and 1440 minute intervals. Larval mortality of Ae. aegypti occurred from the 120th minute with a concentration of 2.4% with a mortality percentage of 5.6%. The results of the Kruskal Wallis test showed that there were differences in the mortality of Ae. aegypti at 60, 120, 240, 720, and 1440 minutes. The LC50 value was 2.329% at 720 minutes while the LC90 test was 7.043% at 720 minutes. Basil leaf extract has not been effective as a larvicide because mortality occurred from the 120th minute.
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