• The Korean Journal of Mycology
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• v.50 no.2
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• pp.103-113
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• 2022

Freshwater ecosystems have a large reserve of latent biological resources that play an essential ecological role, and have significant economic and social value. Fungi in freshwater are prospective materials that can be used in the food, medicine, and biomass energy fields. In this study, three promising fungal species were isolated from freshwater ecosystems in Korea. These isolates were identified as Mortierella biramosa, Paraphoma radicina, and Sordaria macrospora, based on their cultural and morphological characteristics, as well as molecular phylogenetic analyses. These species were previously unknown in Korea. The finding allows us to explore its physiological and biochemical characteristics in more detail and use them as biological resources.

• Journal of Digestive Cancer Research
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• v.3 no.1
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• pp.21-25
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• 2015

Gastric neuroendocrine tumors (GNETs, also known as gastric carcinoids) are rare form of hormone-secreting neoplasms that present with varied clinical syndromes. There are four types of GNETs based on size, proliferation, localization, differentiation, and hormone production. Type I GNET is related to autoimmune atrophic gastritis and hypergastrinemia. Type II GNETs are related to multiple endocrine neoplasia (MEN)-1, Zollinger-Ellison syndrome and hypergastrinemia. Type 3 GNETs are not associated with any background pathology, and type 4 GNETs are poorly differentiated tumors. The most useful diagnostic and prognostic marker for gastrointestinal NETs is plasma chromogranin A (CgA) levels. Endoscopic ultrasound is the method of choice to determine tumor size and depth of infiltration. For optimal management, the type, biology, and stage of the tumor must be considered. Here, we provide a comprehensive and up-to-date review of GNETs.

• Journal of Digestive Cancer Research
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• v.6 no.1
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• pp.11-15
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• 2018

Chemotherapy and surgical resection are the mainstay of cancer treatment. Particularly for chemotherapy, although it is effective method to care, sometimes cure various cancers, there are many different status of cancer not being controlled by chemotherapy such as recurrence and resistance to chemotherapy. In order to overcome those difficulties during cancer therapy, immunotherapy targeting immune cells and immune associated factors to enhance cancer immunity has been highlighted. Innate immunity plays important roles on initial stage of cancer immunity that are detecting, killing cancer cells and initiating adaptive immunity for cancer. So many basic and clinical studies to manage innate immunity for cancer therapy have been going on, and most of them were to stimulate innate immune cells including dendritic cell, macrophage, monocyte, and natural killer cell in various ways. They showed promising results but still there are many things to be resolved before clinical application. Herein, I review the role of innate immune cells and therapeutic trials for colorectal cancer.

• Animal Systematics, Evolution and Diversity
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• v.39 no.4
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• pp.322-324
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• 2023

The hepialid species, Korscheltellus lupulina (Linnaeus) is newly recorded from Korea. A female specimen of K. lupulina was collected on Jeju Island, southern Korea. This species can be distinguished by the whitish linear marking on the postmedian and dorsum of the forewing but these markings are often unseen in females. The female genitalia can be diagnosed by the semi-rounded ninth abdominal tergum, a pair of semi-rounded ninth abdominal sternum with weakly produced, semi-rounded central plate-shaped medial region, a pair of narrow band-shaped subanal plates, the short, thin ductus bursae, and the large, ball-shaped corpus bursae without a signum. Currently, there are four genera and five species of the Hepialidae distributed in Korea.

• Mycobiology
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• v.51 no.5
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• pp.333-342
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• 2023

Phytophthora species, classified under Oomycota, cause significant damage to various crops and trees. The present study introduced Phytophthora species, P. nagaii and P. tentaculata, new to Korea, which pose notable risks to their respective host plants. Our research provided a comprehensive description of these species taking into account their cultural features, morphological characteristics, and molecular phylogenetic analysis using the internal transcribed spacer rDNA region and cytochrome c oxidase subunit mtDNA genes (cox1 and cox2) sequences. In addition, this study first evaluated the sensitivity of P. nagaii and P. tentaculata to five anti-oomycete fungicides, finding both species most responsive to picarbutrazox and P. tentaculata resistant to fluazinam. The data can guide targeted treatment strategies and offer insights into effective control methods. The findings expand our understanding of the diversity, distribution, and management of Phytophthora species in Korea.

• Animal Systematics, Evolution and Diversity
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• v.40 no.1
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• pp.112-114
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• 2024

We report one newly recorded species Warreniplema fumicosta (Warren) for the first time in Korea. In July, a single female specimen of Warreniplema fumicosta was collected at a high altitude on Mount Jirisan. This species can be distinguished by the light blackish forewing with the largely undulating ante- and postmedial lines, and the bicolorous hindwing with yellowish upper half dark brown lower half, and dark brown ante- and postmedial lines. So far, there have been 13 species belonging to seven genera of the Epipleminae subfamily that have been documented, and this includes W. fumicosta.

• Animal Systematics, Evolution and Diversity
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• v.40 no.1
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• pp.94-101
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• 2024

Four species of green hairstreak butterflies, namely Ahlbergia ferrea, A. tricaudata, A. frivaldszkyi, and A. leei, belonging to the genus Ahlbergia Bryk, 1946 (Papilionidea: Lycaenidae), are examined in Korea. It was discovered that Ahlbergia frivaldszkyi, which was previously incorrectly reported in Korea, is actually A. leei. We report two species, A. frivaldszkyi and A. tricaudata as new additions to the Korean fauna. Detailed diagnoses of these four species are provided, including descriptions of both male and female genitalia, along with a key for identifying the four species found in Korea.

• Journal of Surface Science and Engineering
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• v.57 no.2
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• pp.98-104
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• 2024

In order to overcome the urban heat island effect, highly functional paint is attracting attention as a promising means by shielding heat on the structure (building) surface. When a paint was prepared containing nano-sized silica particles, the heat-insulating performance was relatively higher than that of paints with other sizes. In addition, developed paints showed enhanced properties such as chemical resistance and abrasion resistance test because of the presence of nano-sized silica included in functional paint.

• Animal Systematics, Evolution and Diversity
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• v.40 no.3
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• pp.254-257
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• 2024

We report a limacodid moth, Hampsonella takemurai (Inoue) for the first time in Korea based on four males from the southwestern islands of Shinan-gun, Jeollanam-do. The genus Hampsonella Dyar was designated with the type species Parasa dentata Hampson and comprises six species, H. acatharta (Hampson, 1897), H. albidula Wu and Fang, 2009, H arizana (Wileman, 1916), H. dentata (Hampson, 1893), H. membra Solovyev and Witt, 2009, and H. takemurai (Inoue, 1986). Hampsonella takemurai can be diagnosed by the bipectinate male antennae, the blackish forewing with a large, dark blackish postmedial marking, and the blackish hindwing. The male genitalia can be diagnosed by the short triangular uncus, the long digitate gnathos, and the simple membranous valva. We provided the diagnosis and photographs of adult and male genitalia and COI gene sequence.

• Journal of Digestive Cancer Research
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• v.8 no.1
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• pp.61-64
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• 2020

Ablative therapy has drawn attention for cancer treatment as minimally invasive therapy. Recently, irreversible electroporation which has a different concept from the existing ablation method has emerged. Although gastrointestinal tract cancer is commonly managed by ablation such as liver, pancreas cancer, hollow viscus cancer is extremely challenging for applying ablative therapy because of its high perforation risk. Therefore, several studies about hollow viscus irreversible electroporation will be introduced in this review regarding its pre-clinical relevance.