Abstract. Widodo A, Lamid M, Effendi MH, Khairullah AR, Riwu KHP, Yustinasari LR, Kurniawan SC, Ansori ANM, Silaen OSM, Dameanti FNAEP. 2022. Antibiotic sensitivity profile of multidrug-resistant (MDR) Escherichia coli isolated from dairy cow's milk in Probolinggo, Indonesia. Biodiversitas 23: 4971-4976. The presence of resistant bacteria in animal products such as milk can be a new threat because it is directly related to the human food chain. Resistant Escherichia coli has been widely studied and detected in farms in developing countries. The aim of present study was to determine the antibiotic resistance profile of E. coli bacteria from dairy cows taken during the milking process from several dairy farms in Probolinggo district, Indonesia. A total of 150 milk samples were obtained from farms and E. coli was isolated and identified on Eosin methylene blue (EMB) media and biochemical test, such as Triple Sugar Iron Agar (TSIA) and indole test, methyl red test, Voges-Proskauer test, and citrate test (IMViC) were also performed. The antibiotic sensitivity profile was screened using the Kirby-Bauer test and results were interpreted according to the CLSI standard. The results showed that 124/150 (82.67%) E. coli bacteria exhibited highest percentage of antibiotic resistance to tetracycline (13.71%), streptomycin (9.68%), trimethoprim (8.87%), chloramphenicol (0.87%), and aztreonam (1.61%). A total of 9/124 (7.26%) E. coli isolates were detected as multidrug-resistant (MDR) and 1/9 (0.81%) E. coli isolate was suspected as extended spectrum ?-lactamase (ESBL) bacteria which was resistant to aztreonam antibiotic. Thus, the threat of multidrug-resistant (MDR) E. coli can come from milk which can affect public health.

Abstract. Widodo A, Lamid M, Effendi MH, Khailrullah AR, Kurniawan SC, Silaen OSM, Riwu KHP, Yustinasari LR, Afnani DA, Dameanti FNAEP, Ramandinianto SC. 2022. Antimicrobial resistance characteristics of multidrug resistance and extended spectrum beta-lactamase producing Escherichia coli from several dairy farms in Probolinggo, Indonesia. Biodiversitas 23: 215-221. Escherichia coli bacteria initially reside in the digestive tract of humans and animals but are able to adapt to new environments that are different from their initial habitat. The pathogenicity of E. coli can occur when these bacteria grow more than normal limits, produce toxins, and are resistant to certain types of antibiotics. The purpose of this study was to investigate the antimicrobial resistance characteristics of MDR and ESBL-producing E. coli from several dairy farms in the Probolinggo district of East Java province, Indonesia. A total of 150 samples consisting of 109 milk and 41 environmental samples from 41 dairy farms were used for isolation. TSIA and IMViC biochemical tests were used to identify E. coli bacteria. Escherichia coli resistance profile was obtained through disc diffusion test on several antibiotics, namely tetracycline, streptomycin, trimethoprim, chloramphenicol and aztreonam. Escherichia coli that was resistant to 3 or more antibiotics was defined as MDR. The results of isolation and identification obtained 124 (82.6%) isolates characterizing E. coli bacteria. The antimicrobial susceptibility test of E. coli showed 9 (7.26%) MDR isolates and 2 (22.22%) ESBL isolates by double-disc synergy test (DDST). MDR E. coli was dominated by the pattern of antimicrobial drug resistance TE-S-W (tetracycline, streptomycin, trimethoprim) with a total of 8 (38.10%) isolates, followed by antimicrobial drug resistance pattern TE-S-W-ATM (tetracycline, streptomycin, trimethoprim, aztreonam) with one (4.76%) E. coli isolates. The pattern of antimicrobial drugs of ESBL E. coli showed in one (11.11%) sample of ESBL E. coli from a milk sample with the pattern of TE-S-W-ATM (tetracycline, streptomycin, trimethoprim, aztreonam) and one (11.11%) sample ESBL E. coli (AL 30) from the environmental sample with a pattern of TE-S-W pattern (tetracycline, streptomycin, trimethoprim). The discovery of MDR E. coli isolates and ESBL E. coli from milk and environmental samples at several dairy farms in Probolinggo district, East Java, Indonesia is a matter of concern and requires real action to reduce antibiotic resistance.

Penelitian ini bertujuan untuk mengetahui aktivitas antibakteri daun sirsak terhadap Staphylococcus aureus. Ekstraksi diproses dengan metode maserasi terlebih dahulu dengan n-heksana kemudian kloroform. Aktivitas antibakteri diukur secara in vitro dengan menggunakan metode difusi agar menggunakan paperdisk. Aktivitas antibakteri diuji dengan analisis variansi (ANOVA) dengan nilai signifikansi 0,5% untuk mengetahui pengobatan mana yang memiliki efek atau berbeda secara signifikan dengan dosis masing-masing 300 mg/ml, 250 mg/ml, 200 mg/ml, 150 mg/ml, 100 mg/ml dan menghasilkan aktivitas antibakteri dengan zona hambat berturut-turut 16,70 mm; 14,05 mm; 11,45 mm; 9,85 mm; 3,00. Hasil pemeriksaan aktivitas antibakteri menunjukkan ekstrak n-heksana dan kloroform dapat menghambat pertumbuhan Staphylococcus aureus pada konsentrasi 250 mg / ml dengan diameter zona hambat 14,05 mm. Ekstrak dengan aktivitas tertinggi ditentukan konsentrasi hambat tumbuh minimum (MIC). Ekstrak kloroform daun sirsak dari bakteri Staphylococcus aureus yang berada pada konsentrasi 100 mg/ml dengan zona hambat 3,00 mm.

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The aim of this research was to explore the influence of Mozart KV 448 classical music therapy to the neuroglia cells of mice's hippocampus that were exposed to stress during prenatal. This research were employing twenty female mices and twenty male mices. Female mices were estrus synchronized with PMSG and hCG then monomating to the males. Pregnant females were then divided into four groups (P0, P1, P2, P3). P0 was as control, P1 was treated by one minute forced swim test, P2 was treated by one minute forced swim test followed by thirty minutes classical music Mozart KV 448 and P3 was treated by one minute forced swim test followed by sixty minutes classical music Mozart KV 448. This research was carried out for twenty-one days during gestation period. The neuroglia density result was analyzed using ANOVA and Duncan test. The neuroglia activity result was analyzed using Kruskal wallis test and Z test. The histology reading showed degradation of density and activity of hippocampus neuroglia.Keywords: prenatal stress, classical music, Mozart KV 448, neuroglia, hippocampus AbstrakTujuan dari penelitian ini adalah untuk mengetahui pengaruh terapi musik klasik Mozart KV 448 pada densitas dan aktivitas dari sel neuroglia hipokampus anak mencit yang terpapar stres selama prenatal. Penelitian ini menggunakan 20 mencit betina dan 20 mencit jantan. Mencit betina kemudian di sinkronisasi estrus dengan PMSG dan hCG setelah itu dilakukan mono mating. Mencit betina yang positif bunting di bagi menjadi empat kelompok (P0, P1, P2, P3). P0 sebagai kontrol tidak diberikan perlakuan apapun, P1 diberikan terapi forced swim test selama satu menit, P2 diberikan terapi forced swim test selama satu menit diikuti musik klasik Mozart KV 448 selama 30 menit dan P3 diberikan terapi forced swim test selama satu menit diikuti musik klasik Mozart KV 448 selama 60 menit. Penelitian ini dilakukan selama 21 hari periode kebuntingan. Analisis data pada densitas neuroglia menggunakan ANOVA dan uji Duncan selanjutnya untuk aktivitas neuroglia data yang diperoleh berupa skor nilai tingkat perubahan aktivitas antar neuroglia sehingga menggunakan uji Kruskal wallis dan uji Z. Hasil gambaran histologi dari penelitian ini menunjukkan penurunan terhadap densitas dan aktivitas neuroglia hipokampus.

Aim:The aim of this study is to prove the development of artemisinin resistance phenotypically in malaria rodent as an in vivo resistance development model in humans.Materials and Methods:Plasmodium berghei was infected intraperitoneally in mice, then artemisinin was given with “4-day-test” with effective dose (ED) 99% dose for 3 days which begins 48 h after infection (D2, D3, and D4). Parasite development was followed during 5th until 10th days of infection. After parasitemia >2% of red blood cell which contains parasites on 1 mice, that mice were used as donor to be passaged on the new 5 mice. After that, parasitemia was calculated. ED50 and ED90 were examined with parasite clearance time (PCT), recrudescence time (RT), and also morphology development examination of intraerythrocytic cycle of P. berghei with transmission electron microscope.Results:Among the control group compare with the treatment group showed significant differences at α=0.05 on 5th day (D5) until 10th day (D10). The control group of 4th passage (K4) with passage treatment group of 4th passage (P4) on the 10th days (D10) post infection showed no significant differences in the α=0.05. The average percentage of inhibition growth was decreasing which is started from 5th to 10th day post infection in P1, P2, P3, and P4. On the development of P. berghei stage, which is given repeated artemisinin and repeated passage, there was a formation of dormant and also vacuoles in Plasmodium that exposed to the drug.Conclusion:Exposure to artemisinin with repeated passages in mice increased the value of ED50 and ED90, decreased the PCT and RT and also changes in morphology dormant and vacuole formation.

This study was conducted to investigate the protective effect Polygonum minus leaves extract on the histopathological changes on aorta wall of mice (Mus musculus) induced by cadmium chloride. Thirty male mice were divided into five groups and were administered via intragastric gavage with different treatments for 21 days. The treatment were Negative Control (CMC Na 0.5% solution + aquadest), Positive Control (CMC Na0.5% solution + 8 mg/kg bw of mercuric chloride), Treatment 1, 2, and 3 (200, 400, and 800 mg/kg bw of Polygonum minus leaves extract respectively + 8 mg/kg bw of cadmium chloride). The microscopec examine followed analyzed by One Way ANOVA continued with Duncan test for counting the amount of foam cell and the histopathological changes of wall aorta were examined by using Ifora Scoring method was analysed using Kruskal Wallis and continued with Mann-Whitney test. The result showed Polygonum minus leaves extract could protect wall aorta of mice from the damage effect of cadmium chloride. The best dose of Polygonum minus on this research was 400 mg/kg bw.

Abstract. Widodo A, Lamid M, Effendi MH, Tyasningsih W, Wurlina, Al-Arif MA, Raharjo D, Soeharsono, Khairullah AF, Riwu KHP, Yustinasari LR, Kurniawan SC, Silaen OSM, Benjamin MI, Afnani DA. 2023. Potential hazards of multidrug resistance Escherichia coli collected from wastewater on dairy farms in East Java, Indonesia. Biodiversitas 24: 1900-1907. Escherichia coli bacteria initially reside in the digestive tract of humans and animals. This bacterium is treated with antibiotics, but this treatment may trigger antibiotic resistance. Antibiotic resistance genes found in E. coli can transfer to other bacteria, especially in the case of the emergence of multidrug resistance (MDR) bacteria. E. coli is a significant environmental contaminant on dairy farms and is frequently linked to genes that encode extended-spectrum beta-lactamase. This research focused on investigating the potential hazards of multidrug resistance E. coli collected from wastewater on dairy farms in East Java, Indonesia. The number of research samples used was 139 wastewater samples collected from 125 dairy farms in East Java, Indonesia. First, wastewater samples from dairy farms were isolated into BGLB media, then continued with culture on EMBA media, and identifying E. coli bacteria with TSIA and IMViC biochemical tests. The resistance patterns of E. coli were obtained through disk diffusion antibiotic tests on tetracycline, streptomycin, trimethoprim, chloramphenicol, and aztreonam. The results of the isolation and identification obtained 122 (87.77%) E. coli isolates. Antimicrobial susceptibility test to E. coli isolates showed 14 (11.47%) MDR E. coli isolates. The antimicrobial drug resistance pattern TE-ST-W (tetracycline, streptomycin, trimethoprim) accounted for most MDR E. coli isolates in this study, comprising 10 (36.26%); followed by TE-ST-C (tetracycline, streptomycin, chloramphenicol) with two (6.54%) MDR E. coli and two (6.54%) MDR E.coli isolates were resistant to four antibiotics, with the pattern of resistance to TE-ST-W-C (tetracycline, streptomycin, trimethoprim, chloramphenicol) antibiotic. The discovery of multidrug-resistant E. coli isolated from wastewater on dairy farms in East Java, Indonesia, is a new potential hazard that affects public health and needs solutions. One Health integration is anticipated to be used as a solution.