Publications by authors named "Keon Hee Lee"

Western diet (WD), characterized by a high intake of fats and sugary drinks, is a risk factor for male reproductive impairment. However, the molecular mechanisms underlying this remain unclear. Taste receptor type 1 member 3 (TAS1R3), activated by ligands of WD, is highly expressed in extra-oral tissues, particularly in the testes.

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Background: Accumulating evidence supports that the Western diet (WD), a diet high in saturated fat and sugary drinks, contributes to the pathogenesis of anxiety disorders, which are the most prevalent mental disorders worldwide. However, the underlying mechanisms by which WD causes anxiety remain unclear. Abundant expression of taste receptor type 1 member 3 (TAS1R3) has been identified in the hypothalamus, a key brain area involved in sensing peripheral nutritional signals and regulating anxiety.

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Aims: Long-term consumption of a western diet (WD), which is characterized by high intake of saturated fats and sugary drinks, causes cognitive impairment. However, the molecular mechanism by which WD induces cognitive impairment remains unclear. Taste receptor type 1 member 3 (TAS1R3), activated by ligands of WD, is expressed in extra-oral tissues, including the brain, and particularly in the hippocampus.

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Background: Long-term intake of a Western diet (WD), characterized by a high-fat content and sugary drinks, is hypothesized to contribute to the development of inflammatory bowel disease (IBD). Despite the identified clinical association, the molecular mechanisms by which dietary changes contribute to IBD development remain unknown. Therefore, we examined the influence of long-term intake of a WD on intestinal inflammation and the mechanisms by which WD intake affects IBD development.

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Background: Pyoderma gangrenosum is a rare autoinflammatory neutrophilic dermatosis that rapidly evolves. However, little is known about the clinicopathological features and prognosis of pyoderma gangrenosum.

Aims: We aimed to document clinicopathologic and prognostic data of the patients with pyoderma gangrenosum.

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The complete mitochondrial genomes (mitogenomes) of two DNA barcode-defined haplotypes of and one of (Hemiptera: Flatidae) were sequenced and compared to those of other Fulgoroidea species. Furthermore, the mitogenome sequences were used to reconstruct phylogenetic relationships among fulgoroid families. The three mitogenomes, including that of the available species of Flatidae, commonly possessed distinctive structures in the 1702-1836 bp A+T-rich region, such as two repeat regions at each end and a large centered nonrepeat region.

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Chou & Lu, 1977 (Hemiptera: Ricaniidae), is an invasive pest that attacks forest as well as agricultural trees. We sequenced the 15,358 bp long complete mitochondrial genome (mitogenome) of this species; it consists of a typical set of genes (13 protein-coding genes, 2 rRNA genes, and 22 tRNA genes) and one major non-coding AT-rich region. The orientation and gene order of the mitogenome are identical to that of the ancestral type found in majority of the insects.

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Background: Epidermal growth factor receptor (EGFR) is overexpressed in many cancers. However, EGFR expression in melanoma and its role are conflicting.

Objective: This study aimed to evaluate EGFR expression in distant metastatic melanoma and analyze its relationship with histologic and clinical characteristics and survival.

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Cold atmospheric plasma (CAP) has been incorporated into various fields, including promotion of cutaneous wound healing. Atopic dermatitis (AD) is a chronic cutaneous condition characterized by inflammation-induced skin wounds and impaired skin barrier function. To investigate whether CAP may improve AD using an animal model.

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Background: Mycosis fungoides (MF) shows racial and regional differences in terms of clinical features. The availability of therapeutic options as well as drugs differs from one country to another. There are only limited data on the clinical characteristics and treatment experience of MF from South Korea.

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We report the mitochondrial genome (mitogenome) of a case-making moth Wileman, 1911 (Lepidoptera: Psychidae). The 15,704 bp long complete mitogenome comprises a typical set of genes [13 protein-coding genes (PCGs), 2 rRNA genes, and 22 tRNA genes] and one major non-coding, A + T-rich region, with an arrangement identical to that observed in most lepidopteran mitogenomes. Twelve of the 13 PCGs of the mitogenome initiate with a typical ATN start codon, however COI contains the atypical CGA start codon that is common for lepidopteran COI genes.

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The flatid planthopper, (Hemiptera: Flatidae), which is an invasive species, is widespread in Korea. We sequenced a fragment of the from 536 individuals collected mainly in Korea and the European countries and combined these sequence data with the public data, totaling 830 individuals worldwide. The identification of one shared haplotype only between Korea and the USA, the presence of this haplotype only in the North-West region of Korea, and the highest haplotype diversity in this region suggested that the North-West region is another point of entry in addition to the South-East region, which is the presumed sole point of entry to Korea.

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We report the mitochondrial genome (mitogenome) of (Callidulidae: Lepidoptera), which is the first mitogenome sequences in the family Callidulidae, a monotypic family in the superfamily Calliduloidea. The 15,340-bp long complete mitogenome consists of a typical set of genes (13 protein-coding genes [PCGs], 2 rRNA genes, and 22 tRNA genes) and 1 major non-coding A + T-rich region, which are arranged in a way that is frequently observed in Lepidoptera. Of the 13 PCGs, 12 start with ATN, except for COI, which starts with CGA.

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Importance: Large population-based studies investigating the risks of overall and specific cancers among patients with hidradenitis suppurativa (HS) are limited.

Objective: To assess the overall and specific cancer risks in patients with HS compared with the risks in patients without HS in the Republic of Korea.

Design, Setting, And Participants: A nationwide population-based cohort study, using the Korean Health Insurance Review and Assessment Service database was conducted over a 2-year period from January 1, 2007, to December 31, 2008.

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Cutaneous lymphoid hyperplasia (CLH) is a heterogeneous type of reactive lymphocytic infiltration resembling cutaneous lymphoma clinically and histopathologically. Few studies describe the relationship between the causative agents and histopathological and immunohistochemical characteristics of CLH. We investigated the clinical and histopathological characteristics of 50 patients with cutaneous CLH and analyzed them according to causative factors and predominant cell types (B or T cells).

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Mitogenome sequences have a high potential for possessing single-nucleotide polymorphisms (SNPs) that can be used to identify different strains of an organism bred based on maternal lines. The European honey bee, Apis mellifera ligustica (Hymenoptera: Apidae), with a high-hygienic behaviour (HHB) against the external parasitic mite Varroa destructor has been bred for several years in Korea. To distinguish this strain from low-hygienic behaviour (LHB) strains, the complete mitogenome of the two strains were sequenced using next-generation sequencing techniques to detect SNPs.

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