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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.
Kang, Ji Hye,Yang, Minuk,Yun, Dongju,Kim, Mingeun,Lee, Hyojin,Kim, Ki-Tae,Lim, Mi Hee,Kim, Cheal CNRS 2019 NEW JOURNAL OF CHEMISTRY Vol.43 No.10
<P>A dual chemosensor, 1-NO2, based on the combination of 4-chloro-7-nitrobenzofurazan (NBD) and 1-(2-hydroxyethyl)piperazine, was applied for the detection of sulfide. Chemosensor 1-NO2 could detect sulfide through fluorescence turn-off and color change from orange to pink-red. The sensing mechanism and structure of 1-NO2 with S<SUP>2−</SUP> were demonstrated using Job's plot, ESI-MS analysis and theoretical calculations. In addition, 1-NO2 as a sulfide detector could be used in living organisms (HeLa cells and zebrafish).</P>
Sagong Mingeun,Kang Yong-Myung,Kim Na Yeong,Noh Eun Bi,Heo Gyeong-Beom,An Se-Hee,Lee Youn-Jeong,Choi Young Ki,Lee Kwang-Nyeong 한국미생물학회 2023 The journal of microbiology Vol.61 No.10
Since the 2000s, the Y439 lineage of H9N2 avian influenza virus (AIV) has been the predominant strain circulating in poultry in Korea; however, in 2020, the Y280 lineage emerged and spread rapidly nationwide, causing large economic losses. To prevent further spread and circulation of such viruses, rapid detection and diagnosis through active surveillance programs are crucial. Here, we developed a novel H9 rRT-PCR assay that can detect a broad range of H9Nx viruses in situations in which multiple lineages of H9 AIVs are co-circulating. We then evaluated its efficacy using a large number of clinical samples. The assay, named the Uni Kor-H9 assay, showed high sensitivity for Y280 lineage viruses, as well as for the Y439 lineage originating in Korean poultry and wild birds. In addition, the assay showed no cross-reactivity with other subtypes of AIV or other avian pathogens. Furthermore, the Uni Kor-H9 assay was more sensitive, and had higher detection rates, than reference H9 rRT-PCR methods when tested against a panel of domestically isolated H9 AIVs. In conclusion, the novel Uni Kor-H9 assay enables more rapid and efficient diagnosis than the “traditional” method of virus isolation followed by subtyping RT-PCR. Application of the new H9 rRT-PCR assay to AI active surveillance programs will help to control and manage Korean H9 AIVs more efficiently.