The species Enterococcus lactis is closely related to E. faecium and is known for its beneficial and probiotic effects. In this study, strain RRS4 was isolated from Raphanus sativus Linn. and identified based on both phenotypic and genotypic characteristics. Strain RRS4 exhibited cell viability in environments with 2-8% NaCl, pH ranging from 4 to 9, and temperatures between 4°C and 45°C. Through comprehensive genomic analysis, strain RRS4 was confirmed to be E. lactis. E. lactis RRS4 demonstrated inhibitory effects against Vancomycin-resistant E. faecalis JCM 5803. Safety assessments via in silico methods, including KEGG annotation, indicated the absence of virulent and undesirable genes in E. lactis RRS4. VirulenceFinder analysis aligned virulence-related genes with those from three strains of E. lactis and four strains of E. faecium. While antibiotic resistance genes were found to be conserved, they did not correlate with key pathogenicity traits. Furthermore, safety evaluations highlighted that E. lactis RRS4 is generally safe, despite the presence of genes associated with antibiotic resistance. Lastly, we propose guidelines for assessing the safety of microbial strains using whole-genome analysis. These findings represent advancements in probiotic research.
ปัจจุบันมีงานวิจัยเกี่ยวกับโพรไบโอติกส์เพิ่มมากขึ้น เนื่องจากโพรไบโอติกส์มีประโยชน์ต่อสุขภาพมนุษย์โดยเฉพาะระบบทางเดินอาหาร เช่น ช่วยการปรับสมดุลลำไส้ กระตุ้นการทำงานของ ระบบภูมิคุ้มกัน ส่งเสริมกระบวนการย่อยอาหาร ลดระดับคอเลสเตอรอล ถึงแม้โพรไบโอติกส์จะมีประโยชน์มากแต่ก็ควรบริโภคในปริมาณที่เหมาะสม หากได้รับมากเกินไปอาจส่งผลเสียต่อร่างกายได้ โดยโพรไบโอติกส์สามารถพบได้ทั้งในแบคทีเรียและยีสต์ที่มีชีวิตหลายชนิด แต่ชนิดที่พบมากที่สุดและถูกใช้ในผลิตภัณฑ์อาหารเสริมมักจะอยู่ในกลุ่มของแบคทีเรียกรดแลคติก
คณะวิศวกรรมศาสตร์
This project has been developed to address medical challenges related to the process of counting and classifying blood cells from samples, a task that requires both time and high precision. To reduce the workload of medical personnel, the developers have created a platform and an artificial intelligence (AI) system capable of automatically classifying and counting cells from sample images. This system is designed to assist medical laboratory technicians by enabling them to work more efficiently and accurately, reducing the time required for analysis. Furthermore, it promotes the advancement of medical technology, ensuring effective usability from classrooms and laboratories to hospitals.
คณะทันตแพทยศาสตร์
Aggregatibacter actinomycetemcomitans is a key pathogen in periodontal disease, damaging periodontal ligaments and alveolar bone through biofilm formation. D-LL-31, an engineered antimicrobial peptide, exhibits superior biofilm-killing ability compared to conventional treatments, while DNase I enhances its efficacy by disrupting the biofilm matrix. This study evaluated the combined effects of D-LL-31 and DNase I on A. actinomycetemcomitans biofilms. Results showed that D-LL-31 effectively eradicated biofilms, and its combination with DNase I further enhanced biofilm disruption without cytotoxicity to gingival epithelial cells. The D-LL-31 and DNase I combination shows potential for development as a mouthwash to improve oral health and combat periodontal disease.
คณะบริหารธุรกิจ
CO Breathalyzer with Voice Response is the device to measured the level of CO residual in a person's lung who consume tobacco. Measuring residual CO in human breath can identify the tobacco addiction level instead of measuring nicotine in blood.