No abstract

Background:RA is a systemic inflammatory disease that causes developing comorbidity conditions. This condition can cause by overproduction of pro-inflammatory cytokine. In a previous study, we have found bioactive peptide CSN1S2 from Ethawah goat milk for anti-inflammatory for repair the ileum destruction. However, the signaling transduction cascade of bioactive peptides inhibits inflammation still not clear yet. Therefore, we analyzed the signaling transduction cascade via JAK-STAT3 pathway by in vivo and in silico.Methods:The ileum was isolated DNA and amplification with specific primer. The sequence was analyzed using the Sanger sequencing method. Modeling 3D-structure was predicted by SWISS-MODEL and virtual interaction was analyzed by docking system using Pymol and Discovery Studio 4.0 software.Results:This study showed that STAT3 has target gene 480bp. The normal group and normal treating- CSN1S2 of goat milk have similarity from gene bank. Whereas, RA group had transversion mutation that the purine change into pyrimidine even cause frameshift mutation. Interestingly, after treating with the CSN1S2 protein of goat milk shows reverse to the normal acid sequence group. Based on in silico study, from eight peptides, only three peptides of CSN1S2 protein, which carried by PePT1 to enter the small intestine. The fragments are PepT1-41-NMAIHPR-47; PepT1-182-KISQYYQK-189 and PepT1-214-TNAIPYVR-221. We have found just one bioactive peptide of f182-KISQYYQK-189 is able bind to STAT3. The energy binding of f182-KISQYYQK-189 and RA-STAT3 amino acid, it was Σ = -402.43 kJ/mol and the energy binding of f182-KISQYYQK-189 and RAS-STAT3 amino acid is decreasing into Σ = -407.09 kJ/mol.Conclusion:This study suggested that the fragment 182-KISQYYQK-189 peptides from Ethawah goat milk may act as an anti-inflammatory agent via JAK-STAT3 signal transduction cascade at the cellular level.

Sebagian besar masyarakat masih belum mengetahui manfaat yang terkandung pada susu kambing, masyarakat masih menganggap bahwa susu sapi merupakan satu-satunya sumber nutrisi hewani yang memiliki kandungan protein, gizi, dan manfaat yang sangat besar bagi kesehatan. Untuk itu perlu dilakukan sosialisasi tentang pemanfaatan susu kambing karena kurangnya pengetahuan masyarakat sehingga menyebabkan rendahnya daya beli masyarakat. Tujuan dari kegiatan ini adalah untuk menjalin rintisan kerjasama dengan sekolah sebagai salah satu tempat pemasaran produk susu kambing serta orang tua siswa-siswi dalam meningkatkan daya konsumen masyarakat terhadap susu kambing dan memberikan informasi yang berlandaskan data ilmiah tentang manfaat susu kambing. Sosialisasi dilaksanakan melalui pemaparan pemateri tentang manfaat dan pentingnya mengonsumsi susu kambing dalam kehidupan sehari-hari serta pemanfaatan susu kambing menjadi produk nutrisi sehat (susu kambing pasteurisasi). Hasil dari kegiatan sosialisasi adalah para guru dan siswa-siswi bertambah pengetahuannya tentang pentingnya mengonsumsi susu kambing sebagai pangan sehat bernutrisi dan antusias dalam membuat produk-produk sehat berbahan dasar susu kambing.

This study purpose was to investigate the association of casein-alpha-S2 protein of Caprine milk and molecular mechanismofinsulin signaltransduction in type2 diabetes mellitus (T2DM). The Caprine milk CSN1S2 protein treatment of 0, 375, 750, and 1500mg/kg BW were conducted to the control and T2DM rats. We observed several physiological parameters of all rats. The levels of insulin and TNF-α in the plasma were measured using ELISA.The expressions of proteins and mRNA levels of diabetes-related genes in the pancreas tissues were analyzed using Western Blotting and Real-Time PCR, respectively. Our study found that diabetic rats had lower body weight, food intake, and fecal weight compared with control rats. The Caprine milk CSN1S2 protein consumption affected the body weight of diabetic rats to increase, especially at the dose of 750mg/kg BW.Interestingly, the genes associated with insulin signaling were improved by the CSN1S2 protein treatment in diabetic rats, although their blood glucose and cholesterol level were not affected. The diabetic rats showed an elevated insulin level and GLUT4 protein expression after treatment. We also reported that the CSN1S2-treated diabetic rats had a gradually reduced expression of TNF-α and VCAM-1 in dose-dependent. Moreover, the 750mg/kg BW of CSN1S2 treatment enhanced the mRNA expressions of INS-receptor, GLUT4, IGF-1, CAMKK, and CAMKIV in diabetic rats. The ability of Caprine milk CSN1S2 protein to regulate the molecular mechanisms in the diabetes-signaling pathway indicated its potential therapeutic effects on diabetes management.

The study aimed to observed the 3-D structure of GAPDH protein and identify the GAPDH gene sequences mutation of chicken drumstick meat (Gallus gallus). The sample of chicken meat was randomly taken in four districts in Malang city. In this study, the DNA was isolated from drumstick meat chicken samples, amplified using proper primers, and then sequenced using ABI 3730xl DNA Sequencer. The DNA sequences alignments analyzed by BioEdit software and the control sequence of GAPDH gene was obtained from NCBI GenBank (sequence Gene ID: 374193). Then, the amino acid sequence and 3D structure of GAPDH protein were determined based on the change of nucleotide sequences using Swiss model and PyMol software. The nucleotide sequence of a partially GAPDH gene of drumstick meat chicken from districts two is completely different with a 97 percent similarity level, which found twelve nucleotides’ substitutions mutation between nucleotide base number 354 until 777 and three nucleotides inserted between T753 and G754 nucleotide base. These mutations changed the amino acid sequence and 3D structure of GAPDH protein. This result suggests that the differential drumstick chicken meat GAPDH sequences and 3D structure may induce the change of protein-protein interaction and induction.