Publications by authors named "Semi Hwang"

Objective: This study aimed to examine the influence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection on pregnancy in cytokeratin-18 (K18)-hACE2 transgenic mice.

Methods: To determine the expression of hACE2 mRNA in the female reproductive tract of K18-hACE2 mice, real-time polymerase chain reaction (RT-PCR) was performed using the ovary, oviduct, uterus, umbilical cord, and placenta. SARS-CoV-2 was inoculated intranasally (30 μL/mouse, 1×104 TCID50/mL) to plug-checked K18-hACE2 homozygous female mice at the pre-and post-implantation stages at 2.

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The dynamics of uterine endometrium is important for successful establishment and maintenance of embryonic implantation and development, along with extensive cell differentiation and proliferation. The tissue event is precisely and complicatedly regulated as several signaling pathways are involved including two main hormones, estrogen and progesterone signaling. We previously showed a novel signaling molecule, Serine/threonine protein kinase 3/4 (STK3/4), which is responded to hormone in the mouse uterine epithelium.

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The uterus is essential for embryo implantation and fetal development. During the estrous cycle, the uterine endometrium undergoes dramatic remodeling to prepare for pregnancy. Angiogenesis is an essential biological process in endometrial remodeling.

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Beta2-microglobulin (B2M) is a subunit of human leukocyte antigen class-I (HLA-I) heterodimer that mediates immune rejection through activation of cytotoxic T cells. B2M binding to HLA-I proteins is essential for functional HLA-I on the cell surface. Here, we generated a B2M homozygous knockout somatic cell nuclear transfer-induced embryonic stem cell (SCNT-ESC) line using CRISPR/Cas9-mediated gene targeting.

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Objective: To examine the associations of muscle strength and genetic risk for stroke with stroke incidence.

Participants And Methods: We included 284,767 white British participants of UK Biobank without genetic relatedness and stroke or myocardial infarction at baseline between March 13, 2006, and October 1, 2010. Genetic risk was assessed with polygenic risk scores, calculated by summing the risk-increasing alleles, weighted by the effect estimates.

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Objective: The objective of this study was to examine the longitudinal associations of exercise frequency with the incidence of myocardial infarction, stroke, hypertension, type 2 diabetes and 10 different cancer outcomes.

Design: A prospective cohort study.

Setting: Physical examination data linked with the entire South Korean population's health insurance system: from 2002 to 2015.

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Introduction: Since blood is in contact with all tissues in the body and is considered to dynamically reflect the body's pathophysiological status, serum metabolomics changes are important and have diagnostic value in early cancer detection.

Objectives: In this prospective study, we investigated the application of metabolomics to differentiate subjects with incident breast cancer (BC) from subjects who remained free of cancer during a mean follow-up period of 7 years with the aim of identifying valuable biomarkers for BC.

Methods: Baseline serum samples from 84 female subjects with incident BC (BC group) and 88 cancer-free female subjects (control group) were used.

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Background: This meta-analytic study explored the relationship between the risk of type 2 diabetes mellitus (T2DM) and bisphenol A concentrations.

Methods: The Embase and Medline (PubMed) databases were searched, using relevant keywords, for studies published between 1980 and 2018. A total of 16 studies, twelve cross-sectional, two case-control and one prospective, were included in the meta-analysis.

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Background And Objectives: Whether using both traditional risk factors and genetic variants for stroke as opposed to using either of the 2 alone improves the prediction of stroke risk remains unclear. The purpose of this study was to compare the predictability of stroke risk between models using traditional risk score (TRS) and genetic risk score (GRS).

Methods: We used a case-cohort study from the Korean Cancer Prevention Study-II (KCPS-II) Biobank (n=156,701).

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Let us consider that someone is starting a research on a topic that is unfamiliar to them. Which seminal papers have influenced the topic the most? What is the genealogy of the seminal papers in this topic? These are the questions that they can raise, which we try to answer in this paper. First, we propose an algorithm that finds a set of seminal papers on a given topic.

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Synopsis of recent research by authors named "Semi Hwang"

  • - Semi Hwang's recent research focuses on the biomedical implications of various health issues, particularly in reproductive health, infectious diseases during pregnancy, and the intersection of genetic factors with health risks.
  • - Key findings include the impact of SARS-CoV-2 infection on pregnancy in mice, insights into hormonal regulation of the uterus, and the genetic and metabolic associations with conditions like stroke and breast cancer.
  • - Hwang has also explored technological advancements in genetic editing, such as CRISPR/Cas9 applications for creating knockout cell lines, indicating a strong interplay between genetics and clinical applications in disease prevention and management.

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