Hepar mempunyai peranan yang penting dalam mempertahankan homeostasis metabolisme tubuh. Stres oksidatif akibat aktifitas fisik berat dapat meningkatkan produksi Reactive Oxygen Species (ROS) yang kemudian menyebabkan kondisi patologis pada sel hepatosit, ditandai dengan perubahan struktur dan fungsinya. Penelitian ini bertujuan untuk mengetahui dampak stres oksidatif akibat aktifitas fisik berat terhadap kerusakan sel hepatosit. Penelitian ini menggunakan 16 ekor tikus putih Wistar jantan yang berumur 3 bulan, dengan berat badan antara 150 s.d. 200 gram yang dibagi ke dalam kelompok kontrol dan perlakuan. Aktifitas fisik berat yang berupa renang dengan beban dan intensitas maksimal diberikan pada kelompok kontrol, dilakukan setiap pagi selama 30 hari. Penilaian stres oksidatif ditentukan melalui pengukuran kadar MDA serum menggunakan teknik Thiobarbituric Acid Reactive Substance (TBARS). Perubahan histopatologi sel hepatosit berupa degenerasi sel dinilai berdasarkan klasifikasi sistem skoring NAFLD dari the Pathology Committee of the NASH Clinical Research Network. Rerata kadar MDA pada kelompok kontrol sebesar 42,38 nmol/ml, sedangkan pada kelompok perlakuan sebesar 89,63 nmol/ml. Pada pengamatan histopatologi hepar menunjukkan adanya proses degenerasi sel. Dapat disimpulkan bahwa aktifitas fisik berat dapat menyebabkan degenerasi sel hepatosit melalui mekanisme stres oksidatif.Kata Kunci: Aktifitas fisik berat, degenerasi, sel hepatosit, stres oksidatif.

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Non Steroidal Anti-inflammatory Drugs (NSAID) have been implicated in the etiology of gastritis. Mefenamic acid is a non-selective NSAID used to treat mild to moderate pain and inflammation. Mefenamic acid induces gastritis through its inhibition of prostaglandin that results in increased HCl secretion, decreased mucin, and bicarbonate ion production. This study aimed to investigate the gastroprotective effect of onion peel extract (OPE) against mefenamic acid-induced gastritis. In this study, the gastroprotective effect of OPE was examined through mucosal integrity scoring. A total of 28 male Wistar rats were divided into 4 groups, normal (Group 1), mefenamic acid+NaCMC 0,5% (Group 2), mefenamic acid+OPE 600mg/kg body weight (Group 3), and mefenamic acid+OPE 1200mg/kg body weight (Group 4). All rats were sacrificed on day 15 then all gasters were collected. Histopathological examination was done under a microscope with 100X magnification. Administration of mefenamic acid without OPE at all significantly increased gastric mucosal damage (p<0,05). Administration of OPE 1200mg/kg body weight significantly decreased gastric mucosal damage (p<0,05). Group 4 shows no significant difference (p=0,66) with the normal group (Group 1). This indicates that administration of OPE 1200mg/kg body weight per oral ameliorates mefenamic acid-induced gastritis.

Diazinon has a hepatotoxic effect since it is metabolized in the liver involving Kupffer cells (KCs) activation, increasing reactive oxygen species (ROS). The flavonoids contained in shallot (Allium cepa L.) skin act as antioxidants neutralizing oxidative stress. This study aims to determine the effect of shallot skin ethanol extract (SSEE) on liver MDA level and activated KCs histopathology. The total flavonoids level of SSEE was measured using the aluminum chloride colorimetric method and resulted in 228.1 mg QE/g. Rats were divided into normal, diazinon, and SSEE groups. Diazinon was administered at a dose of 40 mg/kg b.w. for 7 days, followed by SSEE at the dose of 600, 900, and 1,200 mg/kg b.w. for 7 days. Liver malondialdehyde (MDA) level was measured using the MDA-TBA method. The results revealed that diazinon increased liver MDA level (p <0.05), while SSEE at doses of 900 and 1,200 mg/kg b.w. decreased liver MDA level equal to normal (p>0.05). Activated KCs in the SSEE group at a dose of 1,200 mg/kg b.w. was impressively equal to the normal group. In conclusion, SSEE at dose of 1,200 mg/kg b.w. neutralize liver oxidative stress due to diazinon indicated by the decrease of liver MDA level and activated KCs equal to normal.Keywords: antioxidant, diazinon, Kupffer cell, liver, MDA, shallotCorrespondence: rosita.fk@unej.ac.id

Ascaris lumbricoides is nematode which often infest human in the world. The infestation of A. lumbricoides in the human will trigger the formation of Th2 immune responses through increased interleukin-4 released by innate immune cells. Th2 immune response generates B lymphocyte cells to produce IgE antibodies to eliminate A. lumbricoides. Therefore, IL-4 is a marker of Th2 immune response. The purpose of this study was to determine the prevalence of ascariasis and an increase of IL-4 in planters infested with A. lumbricoides as a marker of Th2 immune response. Our study was observational analytic with cross sectional design. 230 planters who were willing to be involved in the study gave stool samples for the diagnosis of ascariasis. 20 people who were positive for ascariasis and 20 people who were negative selected randomly for blood plasma samples. IL-4 levels in blood plasma were measured using ELISA. Differences in IL4 levels between positive and negative ascariasis were analyzed by the Mann Whitney statistical test with p value ≤ 0.05. The prevalence of ascariasis among planters in rural area of Jember was 16,52% which was included low prevalence. Univariate analysis showed that the mean and median levels of IL-4 ascariasis were greater than those of healthy planters. Mann Whitney test results showed that there were differences in levels of IL-4 between ascariasis and healthy planters (p≤0.05). Increased levels of IL-4 in planters with ascariasis indicate that A. lumbricoides infection triggers the formation of Th2 immune response as a mechanism for eliminating A. lumbricoides. Keywords: Interleukin-4, A. lumbricoides, Th2 immune response.