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The current state of phage therapy in livestock and companion animals
Youbin Choi,Woongji Lee,Joon-Gi Kwon,Anna Kang,Min-Jin Kwak,어주영,Young Hoon Kim 한국축산학회 2024 한국축산학회지 Vol.66 No.1
In a global context, bacterial diseases caused by pathogenic bacteria have inflicted sustained damage on both humans and animals. Although antibiotics initially appeared to offer an easy treatment for most bacterial infections, the recent rise of multidrug-resistant bacteria, stemming from antibiotic misuse, has prompted regulatory measures to control antibiotic usage. Consequently, various alternatives to antibiotics are being explored, with a particular focus on bacteriophage (phage) therapy for treating bacterial diseases in animals. Animals are broadly categorized into livestock, closely associated with human dietary habits, and companion animals, which have attracted increasing attention. This study highlights phage therapy cases targeting prominent bacterial strains in various animals. In recent years, research on bacteriophages has gained considerable attention, suggesting a promising avenue for developing alternative substances to antibiotics, particularly crucial for addressing challenging bacterial diseases in the future.
Hyejin Choi,Sangdon Ryu,Daye Mun,Woongji Lee,An Na Kang,Mingeun Kang,Hayoung Kim,Daniel Lee,Sangnam Oh,Younghoon Kim 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Bacillus coagulans is a gram-positive, spore-forming and potential probiotic bacterium in food industry. Spore-forming bacteria is enable to survive in the host"s gastrointestinal tract functioning as probiotics that could play a beneficial role in the host health. We evaluated the probiotic characteristics including acid, bile and heat tolerance of B. coagulans SRCM121381 isolated from human breast milk. SRCM121381 showed high resistance to acid and bile, heat tolerance. We employed FIMM (Fermentor for Intestine Microbiota Model) system to evaluate effects of SRCM 121381 on the microbial dynamics in gut environments. SRCM121381 resulted in increased population of Romboutsia and Turicibacter at the genus level, while the abundance of Escherichia decreased significantly. We added SRCM 121381 with starter strains for Gouda cheese using micro-cheese platform and evaluated on the change of cheese flavor. SRCM121381 increased acetic acid (Vinegar) and decreased esters and ketone as undesirable flavor such as bitter taste. Our results propose that potential probiotic bacterium B. coagulans SRCM121381 could be applied on dairy foods as an adjunct starter with flavor productivity.
Culturomic and transcriptomic analysis of potential probiotics isolated from canine for Pet foods
An Na Kang,Daye Moon,Woongji Lee,Hye Jin Choi,Hayoung Kim,Mingeun Kang,Daniel Lee,Sangdon Ryu,Sangnam Oh,Younghoon Kim 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Accomplishing the rapid development of the pet-economy sector, the present area of aging research has been noting the function of probiotics in increasing the healthy lifespan of companion animals, however, the variety and scope of probiotic microorganisms are still remained restricted. In this research, we isolated and screened the lactic acid bacteria (LAB) from canine as novel potential probiotics for pet foods. Under anaerobic culturomic method, total 305 lactic acid bacteria were isolated from domestic dogs of different age groups and were identified using 16S rRNA sequencing method. The isolated lactic acid bacteria were given to an aging fer-15;fem-1 strain of C. elegans; two Lactobacillus species (LA, LS) and two Enterococcus species (EH, EF) were significantly possessed the enhanced lifespan of C. elegans and restored degenerative behavioral responses associated with senescence. Furthermore, whole transcripome analysis revealed that selected 4 potential probiotics strains enhanced the C. elegans longevity and stress response. Therefore, our finding indicated that newly isolated probiotic strains from companion animal could be applied on probiotics-based pet food industry.