http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Ji Wonjun,Huh Kyungmin,Kang Minsun,Hong Jinwook,Bae Gi Hwan,이예린,Na Yewon,Choi Hyoseon,Gong Seon Yeong,Choi Yoon-Hyeong,Ko Kwang-Pil,Im Jeong-Soo,정재훈 대한의학회 2020 Journal of Korean medical science Vol.35 No.25
Background: The coronavirus disease 2019 (COVID-19) pandemic is an emerging threat worldwide. It remains unclear how comorbidities affect the risk of infection and severity of COVID-19. Methods: This is a nationwide retrospective case-control study of 219,961 individuals, aged 18 years or older, whose medical costs for COVID-19 testing were claimed until May 15, 2020. COVID-19 diagnosis and infection severity were identified from reimbursement data using diagnosis codes and on the basis of respiratory support use, respectively. Odds ratios (ORs) were estimated using multiple logistic regression, after adjusting for age, sex, region, healthcare utilization, and insurance status. Results: The COVID-19 group (7,341 of 219,961) was young and had a high proportion of female. Overall, 13.0% (954 of 7,341) of the cases were severe. The severe COVID-19 group had older patients and a proportion of male ratio than did the non-severe group. Diabetes (odds ratio range [ORR], 1.206–1.254), osteoporosis (ORR, 1.128–1.157), rheumatoid arthritis (ORR, 1.207–1.244), substance use (ORR, 1.321–1.381), and schizophrenia (ORR, 1.614–1.721) showed significant association with COVID-19. In terms of severity, diabetes (OR, 1.247; 95% confidential interval, 1.009–1.543), hypertension (ORR, 1.245–1.317), chronic lower respiratory disease (ORR, 1.216–1.233), chronic renal failure, and end-stage renal disease (ORR, 2.052–2.178) were associated with severe COVID-19. Conclusion: We identified several comorbidities associated with COVID-19. Health care workers should be more careful while diagnosing and treating COVID-19 when patients have the abovementioned comorbidities.
Unveiling the Diversity of Hydnum in the Republic of Korea with One New Species, Hydnum paucispinum
Ji Seon Kim,Wonjun Lee,Changmu Kim,Hanna Park,Chang Sun Kim,Young Woon Lim 한국균학회 2023 Mycobiology Vol.51 No.5
Hydnum is a genus of ectomycorrhizal fungi belonging to the Hydnaceae family. It is widelydistributed across different regions of the world, including North America, Europe, and Asia;however, some of them showed disjunct distributions. In recent years, with the integrationof molecular techniques, the taxonomy and classification of Hydnum have undergone severalrevisions and advancements. However, these changes have not yet been applied in theRepublic of Korea. In this study, we conducted an integrated analysis combining the morphologicaland molecular analyses of 30 specimens collected over a period of approximately10 years in the Republic of Korea. For molecular analysis, the sequence data of the internaltranscribed spacer (ITS) region, the large subunit of nuclear ribosomal RNA gene (nrLSU),and a portion of translation elongation factor 1-α (TEF1) were employed as molecularmarkers. Through this study, we identified eight species that had previously not beenreported to occur in the Republic of Korea, including one new species, Hydnum paucispinum. A taxonomic key and detailed descriptions of the eight Hydnum species are provided in thisstudy.
Five Previously Unrecorded Fungal Species Isolated from Marine Plastic Wastes in South Korea
Kim Ji Seon,Kim Sung Hyun,Wonjun Lee,Seo Chang Wan,Lee Jun Won,Park Ki Hyeong,Lim Young Woon 한국균학회 2022 Mycobiology Vol.50 No.6
Plastic wastes have a negative impact on marine environments; however, they can be used as carbon sources and habitats by certain microbes. Microbes in the marine plastisphere can migrate worldwide through the ocean and cause serious environmental problems when they encounter suitable environments. Therefore, efforts to investigate the microbes inhabit- ing the marine plastisphere are increasing. In the present study, fungal strains were isolated from plastic wastes buried in Korean sea sands and mudflats and identified using molecular and morphological analyses. Five species were identified that were previously unrecorded from South Korea: Cladosporium funiculosum, Neosetophoma poaceicola, Neosetophoma rosi- gena, Parasarocladium gamsii, and Trichoderma fomiticola. Their molecular phylogenies and morphological characteristics are described in this study.
Kim Ji Seon,Cho Yoonhee,Seo Chang Wan,Park Ki Hyung,Yoo Shin Nam,Lee Jun Won,Kim Sung Hyun,Lee Wonjun,Lim Young Woon 한국미생물학회 2023 The journal of microbiology Vol.61 No.2
Indoor fungi obtain carbon sources from natural sources and even recalcitrant biodegradable materials, such as plastics and synthetic dye. Their vigorous activity may have negative consequences, such as structural damage to building materials or the destruction of precious cultural materials. The animal specimen room of the Seoul National University stocked 36,000 animal resources that had been well-maintained for over 80 years. Due to abandonment without the management of temperature and humidity during the rainy summer season, many stuffed animal specimens had been heavily colonized by fungi. To investigate the fungal species responsible for the destruction of the historical specimens, we isolated fungi from the stuffed animal specimens and identified them at the species level based on morphology and molecular analysis of the β-tubulin (BenA) gene. A total of 365 strains were isolated and identified as 26 species in Aspergillus (10 spp.), Penicillium (14 spp.), and Talaromyces (2 spp.). Penicillium brocae and Aspergillus sydowii were isolated from most sections of the animal specimens and have damaged the feathers and beaks of valuable specimens. Our findings indicate that within a week of mismanagement, it takes only a few fungal species to wipe out the decades of history of animal diversity. The important lesson here is to prevent this catastrophe from occurring again through a continued interest, not to put all previous efforts to waste.