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"The pathogenesis of inflammatory bowel disease (IBD) is not yet fully understood A genetic predisposition, some environmental factors and microbial flora of the grit are the key factors. The presence of bacteria in the intestinal lumen is a prerequisite for the development of IBD. In animal models, mice incapable of expressing IL, or IL invariably develop a colitis- or Crohn-like inflammation. No inflammation occurs if they grow up in a pathogen free environment or if they are fed with Lactobacillus sp when exposed to environmental bacteria. Thus, the absence of liminal bacteria or a different make-up there of prevents the development of inflammatory bowel disease in this model. Patients with IBD have been found to have a decreased stool excretion Lactobacillus andlor Bifidobacteria. Furthermore, an increased number of bacteria adherents to the mucosa and within the epithelium has been demonstrated in quantitative studies. It appears that these bacteria trigger a strong abnormal mucosal immunological response, leading to intestinal epithelial cell injury mediated by activated T-cells, mononuclear cells and macrophages. If this response can not be down regulated by regulatory T-cells, mononuclear inflammatory cytokines are activated by stimulation of the intracellular transcription factor NF-kB. Recently it was shown that bacterial lipopolysaccharides can activate NF-kB by binding to two specific receptors on the cell membrane (Toll-like receptors [TLR's]) or intracellular receptors (NOD's). New insights of the role of bacteria in IBD became available by identifying susceptibility genes for IBD. Several IBD susceptibility loci were recently identified. The IBD-l locus on chromosome 16 shows positive evidence for linkage in Crohn's disease and IBD-2 locus on chromosome l2 for ulcerative colitis. The evidence for' an association with Crohn's disease at the IBD-I locus have been shown to be attributed to mutations in the CARDI5/NOD2 gene. This gene is exressed in peripheral blood monocytes and in intestinal epithelial cells and serves as a key factor of innate mucosal response to luminal bacteria as an antibacterial factor. The intact intercellular NOD2 protein binds LPS and activates NF-kB. This activation of the NF-kB signalling pathway in response to bacterial components plays a protective role in the mucosal epithelial cells for the host against inviting pathogens and an increased apoptosis of infected cells. There is evidence, that the defective NOD2 protein variants increase the susceptibility to pathogen invasion and a decrease in cellular apoptosis. NF-kB plays a dual role in IBD. On the mucosal epithelial cells, bacterial components bind on NOD2 proteins and protect bacterial invasion. If this barrier mechanism is not intact, the bacterial invasion stimulates via TLR- and NOD2 receptors in immune-active cells (macrophages, T-cells and monocytes) NF-kB and triggers an aberrant inflammatory response leading to tissue damage. These new insights in the pathogenesis in IBD have led to new treatment possibilities including pre- and probiotics. These therapies are aimed at directly modulating the host immune system to suppress intestinal inflammation. This has prompted considerable interest in manipulating the enteric microenvironment as a novel therapeutic strategy Several clinical studies showed promising results rising pre- and probiotics in patients with ulcerative colitis, pouchitis and Crohn's disease. The introduction of genetically engineered probiotic organism to produce and deliver anti-inflammatory cytokines or other biological relevant molecules to the mucosa offers further new potential for the treatment of IBD."

"Bacterial polyhydroxyalkanoates (PHAs) are a class of polymers currently receiving much attention because of theirpotential as renewable and biodegradable plastics. A wide variety of bacteria has been reported to produce PHAsincluding Pseudomonas strains. These strains are known as versatile medium chain length PHAs (PHAs-mcl) producersusing fatty acids as carbon source. Oleic acid was used to produce PHAs-mcl using Pseudomonas putida PGA 1 bycontinuous feeding of both nitrogen and carbon source, in a fed batch culture. During cell growth, PHAs alsoaccumulated, indicating that PHA production in this organism is growth associated. Residual cell increased until thenitrogen source was depleted. At the end of fermentation, final cell concentration, PHA content, and productivity were30.2 g/L, 44.8 % of cell dry weight, and 0.188 g/l/h, respectively."

"Bacterial oxidation technology is a competitive alternative for treating refractory gold. The utilization of bacterial oxidation in the mining industry is relatively recent and the introduction of microbiology and biochemistry to this area is not widely understood by mining companies. Many misconceptions and misunderstandings have resulted from insufficient information. This paper describes the practical aspects of bio-oxidation technology related to the biology and physiology of bacteria in associate with the role and behavior of bacteria in bacterial oxidation."

"Keseimbangan berbagai jenis bakteri pada kulit sangat penting dalam menjaga kesehatan kulit. Permasalahan pada kulit wajah yang muncul salah satunya disebabkan oleh disbiosis mikroba. Penelitian dilakukan untuk menganalisis keberagaman mikrobiom bakteri yang terdapat pada kulit wajah dengan kondisi pH dan kelembaban beragam. Metode analisis diversitas dengan Next Generation Sequencing 16s rRNA. Jumlah responden yang digunakan pada penelitian ini sebanyak 144 sampel. Hasil analisis pada penelitian ini ditemukan bahwa kelas filum bakteri tertinggi Actinobacterium (49,72%), Proteobacterium (29,86%) dan Firmicutes (18,64%). Pada genus Cutibacterium (41,48%), Neisseriaceae (20,29), Staphylococcus (10,16%) ditemukan terbanyak pada kulit wajah dengan nilai kondisi pH dan kelembaban berbeda. Analisis diversitas alfa dengan indeks Chao1 (p=0,05) dan Faith PD(p=0.004) menunjukan kelimpahan mikrobiom signifikan lebih tinggi ditemukan pada pH tinggi dibandingkan pH normal. Analisis diversitas Alfa pada kelembaban tidak ditemukan signifikan terhadap kelimpahan bakteri mikrobiom wajah. Hasil diversitas beta ditemukan perbedaan kelimpahan mikrobiom bakteri pada sepuluh genus tertinggi yang ditemukan pada pH normal dan pH tinggi serta kelompok kelembaban dengan sangat lembab, lembab dan kering. Kesimpulan penelitian profil genus Cutibacterium, Neisseriaceae, Staphylococcus bakteri paling banyak ditemukan pada pH tinggi dan pH normal seta kelembaban sangat lembab, lembab dan kering. Cutibacterium, Neisseriaceae dan Staphylococcus menunjukan adanya peningkatan pH kulit maka kelimpahan bakteri tersebut semakin meningkat. Pada kelembaban kulit, kelimpahan Cutibacterium dan Staphylococcus menurun seiring penurunan nilai kelembaban kulit.

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Balancing various types of bacteria on the skin is crucial for maintaining skin health. One of the issues that arise with facial skin is caused by microbial dysbiosis. Research was conducted to analyze the diversity of bacterial microbiomes on the facial skin with varying pH and moisture conditions. The diversity analysis method used Next Generation Sequencing 16s rRNA, and the study included 144 samples. The results of this research revealed that the highest bacterial phylum classes were Actinobacterium (49.72%), Proteobacterium (29.86%), and Firmicutes (18.64%). The genera Cutibacterium (41.48%), Neisseriaceae (20.29%), and Staphylococcus (10.16%) were the most abundant on the facial skin with different pH and moisture conditions. Alpha diversity analysis using Chao1 index (p=0.05) and Faith PD (p=0.004) indicated significantly higher microbial abundance found in high pH compared to normal pH. However, there was no significant difference in alpha diversity concerning the moisture level and facial bacterial microbiome abundance. Beta diversity analysis showed differences in bacterial microbiome abundance in the top ten genera found between normal pH and high pH, as well as between moisture groups categorized as very moist, moist, and dry. In conclusion, the research profiled the genera Cutibacterium, Neisseriaceae, and Staphylococcus as the most found bacteria in high pH and normal pH conditions, as well as very moist, moist, and dry moisture levels. Cutibacterium, Neisseriaceae, and Staphylococcus showed an increase in skin pH resulting in an increase in the abundance of these bacteria. On the other hand, the abundance of Cutibacterium and Staphylococcus decreased with decreasing skin moisture levels."

"Background: multidrug-resistant organisms (MDRO) caused pneumonia has become a crucial case. MDRO infection has been a problem concern to community-acquired pneumonia (CAP). A lot of factors play roles in CAP with MDRO infection. This study aimed to analyze MDRO as the etiology of hospitalized patients with CAP along with its risk factors in Dr. Soetomo Hospital as one of the top referral hospitals in east Indonesia. Methods: this retrospective cohort study was conducted from January 2016 to December 2018. Data were collected from patients' medical records. Automatic Rapid Diagnosis (Phoenix TM) was used as a standard method for culture and susceptibility test. Various risk factors were analyzed for MDRO infection. Results: five most common pathogens in hospitalized patients with CAP were Acinetobacter baumannii 244/1364 (17.9%), Klebsiella pneumoniae 134/1364 (9.8%), Pseudomonas aeruginosa 91/1364 (6.7%), Escherichia coli 58/1364 (4.3%), and Enterobacter cloacae 45/1364 (3.3%). There were 294/1364 (21.5%) MDROs isolated from patients with CAP. MDRO infection was linked to previous hospitalization, malignancy, cardiovascular disease, and structural lung disease with p values of 0.002, <0.001, 0.024, and <0.001, respectively. Conclusion: the incidence of MDRO in CAP is high (21.5%). The risk factors related were previous hospitalization, malignancy, cardiovascular disease, and structural lung disease."

"ABSTRAKLatar belakang:Sepsis adalah infeksi bakteri dalam darah yang sangat serius (SBI) karena akan mengancam jiwa. Masih tingginya angka kematian balita karena infeksi berat dan keterbatasan fasilitas di rumah sakit daerah untuk mendiagnosis terjadinya SBI,maka penilaian secara klinis dengan menggunakan standar yang valid dalam menegakkan diagnosis SBI sangat diperlukan.Salah satu metode yang dapat digunakan untuk menilai apakah anak diprediksi menderita SBI adalah dengan skala Acute illness observation scale (AIOS). Peneliti terdahulu menemukan skalaAIOS >8 mempunyai titik potong paling baik, tapi validasi keakuratannya perlu diteliti lebih lanjut. Tujuan:Melakukan validasi menggunakan skala AIOS>8 untuk mendeteksi terjadinya infeksi bakteri serius pada usia 3-36 bulan yang datang dengan demam, dan membandingkannya dengan diagnosis akhir dari dokter spesialis anak.Metode :Uji diagnostik potong lintang dan validasi skor menggunakan tabel dua kali dua, untuk mendapatkan nilai sensitifitas, spesifisitas, nilai duga positif, nilai duga negatif dan rasio kemungkinan positif dan negatif. Hasil penelitian :Dari 143 sampel, subjek penderita SBI sebesar 44(30,77%), proporsi anak laki-laki sama dengan perempuan. dan usia terbanyak adalah 3-12 bulan yaitu 27(61,4%) subjek. Subjek penderita SBI dengan skoring AIOS > 8 sebanyak 41( (93,2%%). Penyakit SBI terbanyak adalah pnemonia 21(47,7%) subjek, diikuti ISK (13,6%), diare bakterial, sepsis dan ensefalitis masing masing (9,1%), selulitis (6,8%) dan meningitis (4,6%) dan penyakit bukan SBI terbanyak adalah ISPA 36(36,4%) subjek. Sensitifitas skor AIOS 95,5% (IK 95%; 84,5-99,4%), spesifisitas 29,3% (IK 95%; 20,6-39,3%), nilai duga positif 37,5% (IK 95%; 34,3-40,9%), nilai duga negatif 93,6% (IK 95%; 78,4-98,3%), rasio kemungkinan positif 1,4 (IK95%; 1,2-1,6), rasio kemungkinan negatif 0,2 (IK95%; 0,04-0,6). AUC(area under receiver operating characteristic curve 0,655 dengan p 0,002 dan IK 95% 0,6-0,8) dapat mendiskriminasi pasien-pasien yang dicurigai SBI dengan baik. Kesimpulan : Penggunaan skala AIOS>8 sangat sensitif untuk mendeteksi terjadinya infeksi bakteri serius pada usia 3-36 bulan.

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ABSTRACTBack ground. Sepsis is a very serious bacterial infection in the blood (SBI) because it will be life-threatening. The high rates of under-five mortality due to severe infections and limited facilities in local hospitals, a clinical assessment must be use a valid standard to diagnose SBI. One method that can be used to assess whether a child is predicted to have SBI is the scale of the Acute illness observation scale (AIOS). The previous researcher found that the scale of AIOS > 8 has the best cutoff point, but the validation of accuracy needs to be further investigated.. Aim: Validate using AIOS scale> 8 to detect the occurrence of serious bacterial infections at the age of 3-36 months who come with fever, and compare it with the final diagnosis of pediatrician.Method. The cross-sectional diagnostic test and the scoring validation use the two-by-two tables, to obtain sensitivity, specificity, positive predictor, negative predictor and positive and negative probability ratios. Result. Of the 143 samples, the subject of SBI was 44 (30.77%), the proportion of boys was the same as for women. And the most ages were 3-12 months ie 27 (61.4%) subjects. Subjects of SBI patients with AIOS scores > 8 were 41 ((93.2 %%) .The highest SBI disease was pneumonia 21 (47.7%) subjects, followed by UTI (13.6%), bacterial diarrhea, sepsis and encephalitis respectively (9,1%), cellulitis (6.8%) and meningitis (4.6%) and non-SBI disease were mostly ARI 36 (36.4%) subjects, AIOS score sensitivity 95.5% (95% IK; 84,5-99,4%), specificity 29,3% (95% IK, 20,6-39,3%), positive predictive value 37,5% (95% IK, 34,3-40,9% ), A negative predictive value of 93.6% (95% IK, 78.4-98.3%), a positive likelihood ratio of 1.4 (IK95%, 1.2-1.6), a negative likelihood ratio of 0.2 ( IK95%; 0.04-0.6). AUC (area under receiver operating characteristic curve 0.655 with p 0.002 and 95% IK 0.6-0.8) can discriminate well-suspected SBI patients. Conclusion. The use of AIOS scale> 8 is very sensitive to detect serious bacterial infections at 3-36 months of age in area."

"Prevalensi kematian akibat diare pada bayi dan balita yang tinggi dapat disebabkan oleh Serratia marcescens. Prevalensi kematian akibat pneumonia pada bayi dan balita dapat disebabkan oleh Klebsiella pneumoniae. Prevalensi penyakit endokarditis infektif dapat disebabkan oleh Staphylococcus epidermidis. Namun, resistensi antibiotik menjadi masalah yang serius sehingga dilakukan eksplorasi pada tanaman masoyi yang merupakan tanaman endemik dari Papua. Minyak atsiri dari kulit kayu masoyi yang diperoleh dengan metode distilasi uap dilaporkan berpotensi menghambat pertumbuhan bakteri Streptococcus mutans, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhimurium, Staphylococcus aureus dan Bacillus cereus. Pada penelitian ini, dilakukan determinasi tanaman, pengumpulan dan penyerbukan simplisia kulit kayu masoyi, uji mikroskopik, ekstraksi minyak atsiri dengan metode distilasi air, uji fitokimia golongan terpenoid dan uji aktivitas antibakteri terhadap Klebsiella pneumoniae, Serratia marcescens dan Staphylococcus epidermidis. Minyak atsiri dibuat ke beberapa konsentrasi dengan melarutkan minyak atsiri dengan DMSO dan PEG 400. Uji aktivitas antibakteri menggunakan metode zona hambat (metode difusi cakram) dan metode konsentrasi hambat minimal (makrodilusi) terhadap Klebsiela pneumoniae, Serratia marcescens dan Staphylococcus epidermidis. Hasil metode zona hambat menunjukkan minyak atsiri dengan pelarut DMSO terhadap K.pneumoniae berpotensi lemah (1-1,25 mm) sedangkan, terhadap S.marcescens (10,625-13,25 mm) dan S.epidermidis (11,75- 14,5 mm) berpotensi kuat. Minyak atsiri dengan pelarut PEG 400 terhadap K.pneumoniae (5-9,75 mm), S.marcescens (5,5-8,25 mm) dan S.epidermidis (4,625-7,5 mm) berpotensi sedang. Hasil metode makrodilusi menunjukkan nilai KHM minyak atsiri Cryptocarya massoy (Oken) Kosterm terhadap K.pneumoniae = 125 µg/mL, S.marcescens = 62,5 µg/mL dan S.epidermidis = 31,25 - 15,625 µg/mL.

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The high prevalence of death from diarrhea in infants and toddlers can be caused by Serratia marcescens. The prevalence of death from pneumonia in infants and toddlers can be caused by Klebsiella pneumoniae. The prevalence of infective endocarditis can be caused by Staphylococcus epidermidis. However, antibiotic resistance is a serious problem, so an exploration of the masoyi plant, which is an endemic plant from Papua, was carried out. Essential oil from masoyi bark obtained by steam distillation method has the potential to inhibit the growth of Streptococcus mutans, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhimurium, Staphylococcus aureus and Bacillus cereus as reported. In this study, plant determination, collection and pollination of masoyi bark simplicia, microscopic test, extraction of essential oils by water distillation method, phytochemical test of terpenoids and antibacterial activity tests against Klebsiella pneumoniae, Serratia marcescens and Staphylococcus epidermidis were carried out. The essential oil was made into several concentrations by dissolving the essential oil with DMSO and PEG 400. The antibacterial activity was tested using the zone of inhibition method (disk diffusion method) and the minimal inhibitory concentration method (macrodilution) against Klebsiela pneumoniae, Serratia marcescens and Staphylococcus epidermidis. The results of the inhibition zone method showed that essential oils with DMSO as solvent were potentially weak against K.pneumoniae (1-1.25 mm) while against S.marcescens (10.625-13.25 mm) and S.epidermidis (11.75-14.5 mm). mm) potentially strong. Essential oil with solvent PEG 400 against K. pneumoniae (5-9.75 mm), S. marcescens (5.5-8.25 mm) and S. epidermidis (4.625-7.5 mm) has moderate potential. The results of the macrodilution method showed the MIC value of Cryptocarya massoy (Oken) Kosterm essential oil against K.pneumoniae = 125 g/mL, S.marcescens = 62.5 g/mL and S.epidermidis = 31.25 - 15,625 g/mL.

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