Publications by authors named "Hyun A Jang"

The phenylpropanoid pathway is vital for plant growth and development, producing lignin and flavonoids. This study investigates PtrMYB203, a homolog of MYB repressors of proanthocyanidin (PA) biosynthesis in Populus trichocarpa, as a transcriptional repressor in the phenylpropanoid pathway of hybrid poplar (Populus alba x P. glandulosa).

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: Tuberculosis is caused by Mycobacterium tuberculosis (MTB), while nontuberculous mycobacteria (NTM) encompass a group of mycobacterial species that are distinct from the MTB complex and leprae. Spondyloarthritis (SpA) is a group of chronic inflammatory diseases with shared clinical characteristics and is treated with biological agents; however, their use may elevate the risk of MTB and NTM infections. This study aimed to compare the incidence and risk of MTB and NTM infections in patients with SpA, including ankylosing spondylitis (AS) and psoriatic arthritis (PsA), using a population-based approach.

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Objectives: To conduct a population-based analysis of the malignancy risks of patients with ankylosing spondylitis (AS).

Methods: A total of 1,796 patients with AS and 7,184 age- and sex-matched controls (1:4 ratio) were selected from the Korea National Health Insurance Service-National Sample Cohort database. Data of patients diagnosed with AS (code M45) according to the International Classification of Diseases (ICD) 10th edition, between 2002 and 2019, were reviewed.

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Plants have evolved defense mechanisms to overcome unfavorable climatic conditions. The growth and development of plants are regulated in response to environmental stress. In this study, we investigated the molecular and physiological characteristics of a novel gene in hybrid poplar ( × var.

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Caffeoyl shikimate esterase (CSE) has been shown to play an important role in lignin biosynthesis in plants and is, therefore, a promising target for generating improved lignocellulosic biomass crops for sustainable biofuel production. spp. has two genes ( and ) and, thus, the hybrid poplar ( × ) investigated in this study has four genes.

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Bitter rot caused by species is a common fruit rotting disease of apple and one of the economically important disease in worldwide. In 2015 and 2016, distinct symptoms of bitter rot disease were observed in apple orchards in five regions of South Korea. In the present study, infected apples from these regions were utilized to obtain eighteen isolates of spp.

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In this study, the catalytic activity and kinetic characteristics of the aromatic hydrocarbon dioxygenase system and the possibility of substituting its ferredoxin and ferredoxin reductase components were evaluated. The genes encoding toluene dioxygenase and toluene dihydrodiol dehydrogenase were cloned from Pseudomonas putida F1, and the corresponding enzymes were overexpressed and purified to homogeneity. Oxidative hydroxylation of toluene to cis-toluene dihydrodiol was catalyzed by toluene dioxygenase, and its subsequent dehydrogenation to 3-methylcatechol was catalyzed by toluene dihydrodiol dehydrogenase.

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The anthracnose disease caused by species is well-known as a major plant pathogen that primarily causes fruit rot in pepper and reduces its marketability. Thirty-five isolates representing species of were obtained from chili fruits showing anthracnose disease symptoms in Chungcheongnam-do and Chungcheongbuk-do, South Korea. These 35 isolates were characterized according to morphological characteristics and nucleotide sequence data of internal transcribed spacer, glyceraldehyde-3-phosphate-dehydrogenase, and β-tubulin.

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We previously isolated Nicotiana benthamiana matrix metalloprotease 1 (NMMP1) from tobacco leaves. The NMMP1 gene encodes a highly conserved, Zn-containing catalytic protease domain that functions as a factor in the plant's defense against bacterial pathogens. Expression of NMMP1 was strongly induced during interactions between tobacco and one of its pathogens, Phytophthora infestans.

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Background: Few studies have examined the surgical treatment of intestinal Behçet disease. Consequently, there is currently no standard surgical treatment for intestinal Behçet disease. Instead, treatment is empirical and symptom based.

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Introduction: Surgical treatment of intestinal Behcet's disease (BD) is not well established. Specifically, it is still difficult to assess the clinical value of laparoscopic surgery to address this condition. We aimed to evaluate the clinical course and the characteristics of laparoscopic surgery for intestinal BD compared with open surgery.

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Homologs of the cytoplasmic protein kinase Pti1 are found in diverse plant species. A clear role of Pti1 in plant defense response has not been established. We identified a Pti1 homolog in cucumber (CsPti1-L).

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Purpose: Laparoscopic resection for transverse colon cancer is a technically challenging procedure that has been excluded from various large randomized controlled trials of which the long-term outcomes still need to be verified. The purpose of this study was to evaluate long-term oncologic outcomes for transverse colon cancer patients undergoing laparoscopic colectomy (LAC) or open colectomy (OC).

Methods: This retrospective review included patients with transverse colon cancer who received a colectomy between January 2006 and December 2010.

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Homeodomain-leucine zipper (HD-Zip) family proteins are unique to plants, but little is known about their role in defense responses. CaHB1 is a nuclear factor in peppers, belonging to subfamily II of HD-Zip proteins. Here, we determined the role of CaHB1 in the defense response.

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