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  1. Article ; Online: Prevalence and genome features of lake sinai virus isolated from Apis mellifera in the Republic of Korea.

    Nguyen, Thi-Thu / Yoo, Mi-Sun / Truong, A-Tai / Youn, So Youn / Kim, Dong-Ho / Lee, Se-Ji / Yoon, Soon-Seek / Cho, Yun Sang

    PloS one

    2024  Volume 19, Issue 3, Page(s) e0299558

    Abstract: Lake Sinai Virus (LSV) is an emerging pathogen known to affect the honeybee (Apis mellifera). However, its prevalence and genomic characteristics in the Republic of Korea (ROK) remain unexplored. This study aimed to assess the prevalence of and analyze ... ...

    Abstract Lake Sinai Virus (LSV) is an emerging pathogen known to affect the honeybee (Apis mellifera). However, its prevalence and genomic characteristics in the Republic of Korea (ROK) remain unexplored. This study aimed to assess the prevalence of and analyze the LSVs by examining 266 honeybee samples from the ROK. Our findings revealed that LSV exhibited the highest infection rate among the pathogens observed in Korean apiaries, particularly during the reported period of severe winter loss (SWL) in A. mellifera apiaries in 2022. Three LSV genotypes- 2, 3, and 4 -were identified using RNA-dependent RNA polymerase gene analysis. Importantly, the infection rates of LSV2 (65.2%) and LSV3 (73.3%) were significantly higher in colonies experiencing SWL than in those experiencing normal winter loss (NWL) (p < 0.03). Furthermore, this study provides the first near-complete genome sequences of the Korean LSV2, LSV3, and LSV4 strains, comprising 5,759, 6,040, and 5,985 nt, respectively. Phylogenetic analysis based on these near-complete genome sequences demonstrated a close relationship between LSVs in the ROK and China. The high LSV infection rate in colonies experiencing a heightened mortality rate during winter suggests that this pathogen might contribute to SWL in ROK. Moreover, the genomic characteristic information on LSVs in this study holds immense potential for epidemiological information and the selection of specific genes suitable for preventing and treating LSV, including the promising utilization of RNA interference medicine in the future.
    MeSH term(s) Bees ; Animals ; Phylogeny ; Prevalence ; Viruses ; RNA Viruses/genetics ; Republic of Korea/epidemiology
    Language English
    Publishing date 2024-03-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0299558
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Molecular Identification and Prevalence of the Mite

    Nguyen, Thi-Thu / Yoo, Mi-Sun / Lee, Hyang-Sim / Youn, So-Youn / Lee, Se-Ji / Seo, Su-Kyoung / Kim, Jaemyung / Cho, Yun-Sang

    Insects

    2024  Volume 15, Issue 4

    Abstract: ... Apis ... ...

    Abstract Apis mellifera
    Language English
    Publishing date 2024-04-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects15040271
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Identification and pathogen detection of a Neocypholaelaps species (Acari: Mesostigmata: Ameroseiidae) from beehives in the Republic of Korea.

    Nguyen, Thi-Thu / Yoo, Mi-Sun / Lee, Jong-Ho / Truong, A-Tai / Youn, So-Youn / Lee, Se-Ji / Yoon, Soon-Seek / Cho, Yun Sang

    PloS one

    2024  Volume 19, Issue 4, Page(s) e0300025

    Abstract: In this study, we identified a new strain of the genus Neocypholaelaps from the beehives of Apis mellifera colonies in the Republic of Korea (ROK). The Neocypholaelap sp. KOR23 mites were collected from the hives of honeybee apiaries in Wonju, Gangwon-do, ...

    Abstract In this study, we identified a new strain of the genus Neocypholaelaps from the beehives of Apis mellifera colonies in the Republic of Korea (ROK). The Neocypholaelap sp. KOR23 mites were collected from the hives of honeybee apiaries in Wonju, Gangwon-do, in May 2023. Morphological and molecular analyses based on 18S and 28S rRNA gene regions conclusively identified that these mites belong to the genus Neocypholaelaps, closely resembling Neocypholaelaps sp. APGD-2010 that was first isolated from the United States. The presence of 9 of 25 honeybee pathogens in these mite samples suggests that Neocypholaelaps sp. KOR23 mite may act as an intermediate vector and carrier of honeybee diseases. The identification of various honeybee pathogens within this mite highlights their significance in disease transmission among honeybee colonies. This comprehensive study provides valuable insights into the taxonomy and implications of these mites for bee health management and pathogen dissemination.
    MeSH term(s) Bees ; Animals ; Mites ; Republic of Korea ; Varroidae
    Language English
    Publishing date 2024-04-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0300025
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Probiotic candidates for controlling Paenibacillus larvae, a causative agent of American foulbrood disease in honey bee.

    Truong, A-Tai / Kang, Jeong Eun / Yoo, Mi-Sun / Nguyen, Thi Thu / Youn, So-Youn / Yoon, Soon-Seek / Cho, Yun Sang

    BMC microbiology

    2023  Volume 23, Issue 1, Page(s) 150

    Abstract: Background: American foulbrood (AFB) disease caused by Paenibacillus larvae is dangerous, and threatens beekeeping. The eco-friendly treatment method using probiotics is expected to be the prospective method for controlling this pathogen in honey bees. ... ...

    Abstract Background: American foulbrood (AFB) disease caused by Paenibacillus larvae is dangerous, and threatens beekeeping. The eco-friendly treatment method using probiotics is expected to be the prospective method for controlling this pathogen in honey bees. Therefore, this study investigated the bacterial species that have antimicrobial activity against P. larvae.
    Results: Overall, 67 strains of the gut microbiome were isolated and identified in three phyla; the isolates had the following prevalence rates: Firmicutes 41/67 (61.19%), Actinobacteria 24/67 (35.82%), and Proteobacteria 2/67 (2.99%). Antimicrobial properties against P. larvae on agar plates were seen in 20 isolates of the genus Lactobacillus, Firmicutes phylum. Six representative strains from each species (L. apis HSY8_B25, L. panisapium PKH2_L3, L. melliventris HSY3_B5, L. kimbladii AHS3_B36, L. kullabergensis OMG2_B25, and L. mellis OMG2_B33) with the largest inhibition zones on agar plates were selected for in vitro larvae rearing challenges. The results showed that three isolates (L. apis HSY8_B25, L. panisapium PKH2_L3, and L. melliventris HSY3_B5) had the potential to be probiotic candidates with the properties of safety to larvae, inhibition against P. larvae in infected larvae, and high adhesion ability.
    Conclusions: Overall, 20 strains of the genus Lactobacillus with antimicrobial properties against P. larvae were identified in this study. Three representative strains from different species (L. apis HSY8_B25, L. panisapium PKH2_L3, and L. melliventris HSY3_B5) were evaluated to be potential probiotic candidates and were selected for probiotic development for the prevention of AFB. Importantly, the species L. panisapium isolated from larvae was identified with antimicrobial activity for the first time in this study.
    MeSH term(s) Bees ; Animals ; Paenibacillus larvae/genetics ; Agar ; Larva ; Actinobacteria ; Firmicutes ; Lactobacillus ; Probiotics/pharmacology
    Chemical Substances Agar (9002-18-0)
    Language English
    Publishing date 2023-05-24
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2041505-9
    ISSN 1471-2180 ; 1471-2180
    ISSN (online) 1471-2180
    ISSN 1471-2180
    DOI 10.1186/s12866-023-02902-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Large-Scale Application of Double-Stranded RNA Shows Potential for Reduction of Sacbrood Virus Disease in

    Yoo, Mi-Sun / Truong, A-Tai / Jeong, Hana / Hahn, Do-Hyun / Lee, Ju-Seong / Yoon, Soon-Seek / Youn, So-Youn / Cho, Yun-Sang

    Viruses

    2023  Volume 15, Issue 4

    Abstract: Sacbrood virus (SBV) infection has emerged as a remarkable threat ... ...

    Abstract Sacbrood virus (SBV) infection has emerged as a remarkable threat to
    MeSH term(s) Animals ; Bees/genetics ; Larva ; RNA Viruses/genetics ; RNA, Double-Stranded/genetics ; Virus Diseases
    Chemical Substances RNA, Double-Stranded
    Language English
    Publishing date 2023-03-31
    Publishing country Switzerland
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15040897
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Genetic and Pathogenic Characterization of QX(GI-19)-Recombinant Infectious Bronchitis Viruses in South Korea.

    Youn, So-Youn / Lee, Ji-Youn / Bae, You-Chan / Kwon, Yong-Kuk / Kim, Hye-Ryoung

    Viruses

    2021  Volume 13, Issue 6

    Abstract: Infectious bronchitis viruses (IBVs) are evolving continuously via genetic drift and genetic recombination, making disease prevention and control difficult. In this study, we undertook genetic and pathogenic characterization of recombinant IBVs isolated ... ...

    Abstract Infectious bronchitis viruses (IBVs) are evolving continuously via genetic drift and genetic recombination, making disease prevention and control difficult. In this study, we undertook genetic and pathogenic characterization of recombinant IBVs isolated from chickens in South Korea between 2003 and 2019. Phylogenetic analysis showed that 46 IBV isolates belonged to GI-19, which includes nephropathogenic IBVs. Ten isolates formed a new cluster, the genomic sequences of which were different from those of reference sequences. Recombination events in the
    MeSH term(s) Animals ; Chickens/virology ; Genomics ; Genotype ; Infectious bronchitis virus/classification ; Infectious bronchitis virus/genetics ; Infectious bronchitis virus/pathogenicity ; Phylogeny ; Poultry Diseases/epidemiology ; Poultry Diseases/virology ; Recombination, Genetic ; Republic of Korea/epidemiology ; Sequence Analysis, RNA ; Virulence
    Language English
    Publishing date 2021-06-17
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13061163
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Genetic and Pathogenic Characterization of QX(GI-19)-Recombinant Infectious Bronchitis Viruses in South Korea

    Youn, So-Youn / Lee, Ji-Youn / Bae, You-Chan / Kwon, Yong-Kuk / Kim, Hye-Ryoung

    Viruses. 2021 June 17, v. 13, no. 6

    2021  

    Abstract: Infectious bronchitis viruses (IBVs) are evolving continuously via genetic drift and genetic recombination, making disease prevention and control difficult. In this study, we undertook genetic and pathogenic characterization of recombinant IBVs isolated ... ...

    Abstract Infectious bronchitis viruses (IBVs) are evolving continuously via genetic drift and genetic recombination, making disease prevention and control difficult. In this study, we undertook genetic and pathogenic characterization of recombinant IBVs isolated from chickens in South Korea between 2003 and 2019. Phylogenetic analysis showed that 46 IBV isolates belonged to GI-19, which includes nephropathogenic IBVs. Ten isolates formed a new cluster, the genomic sequences of which were different from those of reference sequences. Recombination events in the S1 gene were identified, with putative parental strains identified as QX-like, KM91-like, and GI-15. Recombination detection methods identified three patterns (rGI-19-I, rGI-19-II, and rGI-19-III). To better understand the pathogenicity of recombinant IBVs, we compared the pathogenicity of GI-19 with that of the rGI-19s. The results suggest that rGI-19s may be more likely to cause trachea infections than GI-19, whereas rGI-19s were less pathogenic in the kidney. Additionally, the pathogenicity of rGI-19s varied according to the genotype of the major parent. These results indicate that genetic recombination between heterologous strains belonging to different genotypes has occurred, resulting in the emergence of new recombinant IBVs in South Korea.
    Keywords disease prevention ; genes ; genetic drift ; genetic recombination ; genomics ; genotype ; infectious bronchitis ; kidneys ; pathogenicity ; phylogeny ; South Korea
    Language English
    Dates of publication 2021-0617
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2516098-9
    ISSN 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13061163
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Genotyping of

    Truong, A-Tai / Youn, So Youn / Yoo, Mi-Sun / Lim, Ji-Yeon / Yoon, Soon-Seek / Cho, Yun Sang

    Genes

    2022  Volume 13, Issue 11

    Abstract: Genotyping ... ...

    Abstract Genotyping of
    MeSH term(s) Humans ; Cattle ; Animals ; Coxiella burnetii/genetics ; Minisatellite Repeats/genetics ; Genotype ; Q Fever/epidemiology ; Q Fever/veterinary ; Q Fever/genetics ; Cattle Diseases/epidemiology ; Cattle Diseases/genetics
    Language English
    Publishing date 2022-10-23
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2527218-4
    ISSN 2073-4425 ; 2073-4425
    ISSN (online) 2073-4425
    ISSN 2073-4425
    DOI 10.3390/genes13111927
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: First identification of Tyrophagus curvipenis (Acari: Acaridae) and pathogen detection in Apis mellifera colonies in the Republic of Korea.

    Nguyen, Thi-Thu / Yoo, Mi-Sun / Truong, A-Tai / Lee, Jong Ho / Youn, So Youn / Lee, Se-Ji / Kim, Dong-Ho / Yoon, Soon-Seek / Cho, Yun Sang

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 9469

    Abstract: Mites of the genus Tyrophagus (Acari: Acaridae) are among the most widely distributed mites. The species in this genus cause damage to stored products and crops, and pose a threat to human health. However, the influence of Tyrophagus spp. in apiculture ... ...

    Abstract Mites of the genus Tyrophagus (Acari: Acaridae) are among the most widely distributed mites. The species in this genus cause damage to stored products and crops, and pose a threat to human health. However, the influence of Tyrophagus spp. in apiculture remains unknown. In 2022, a study focusing on the identification of Tyrophagus species within five apiaries was conducted in Chungcheongnam Province, Republic of Korea. Its specific objective was to investigate the presence of Tyrophagus mites in response to the reported high mortality of honey bee colonies in this area. Morphological identification and phylogenetic analysis using the mitochondrial gene cytochrome-c oxidase subunit 1 (CO1) confirmed for the first time the presence of the mite species Tyrophagus curvipenis in a honey bee colony in the Republic of Korea. Two honey bee pathogens were detected in the mite, a viral pathogen (deformed wing virus, DWV) and a protozoal pathogen (Trypanosoma spp.). The presence of the two honey bee pathogens in the mite suggests that this mite could contribute to the spread of related honey bee diseases. However, the direct influence of the mite T. curvipenis on honey bee health remains unknown and should be further investigated.
    MeSH term(s) Humans ; Animals ; Bees ; Acaridae ; Phylogeny ; Mites/genetics ; Republic of Korea
    Language English
    Publishing date 2023-06-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-36695-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Current Status of Q Fever and the Challenge of Outbreak Preparedness in Korea: One Health Approach to Zoonoses.

    Cho, Yun Sang / Park, Ji-Hyuk / Kim, Jong Wan / Lee, Jin-Ju / Youn, So Youn / Byeon, Hyeon Seop / Jeong, Hye Won / Kim, Dong-Min / Yu, Shi Nae / Yoon, Jang Won / Kwak, Dongmi / Yoo, Han Sang / Lee, Ji-Yeon / Kwon, Jeong-Ran / Hwang, Kyung-Won / Heo, Jung Yeon

    Journal of Korean medical science

    2023  Volume 38, Issue 24, Page(s) e197

    Abstract: Human Q fever, a zoonosis caused ... ...

    Abstract Human Q fever, a zoonosis caused by
    MeSH term(s) Animals ; Humans ; Female ; Pregnancy ; Q Fever/epidemiology ; Q Fever/prevention & control ; One Health ; Zoonoses/epidemiology ; Zoonoses/prevention & control ; Disease Outbreaks/prevention & control ; Republic of Korea/epidemiology ; Communicable Diseases/epidemiology
    Language English
    Publishing date 2023-06-19
    Publishing country Korea (South)
    Document type Journal Article ; Review
    ZDB-ID 639262-3
    ISSN 1598-6357 ; 1011-8934
    ISSN (online) 1598-6357
    ISSN 1011-8934
    DOI 10.3346/jkms.2023.38.e197
    Database MEDical Literature Analysis and Retrieval System OnLINE

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