Eun Na Kim

Seoul National University Hospital · Pathology

Introduction: Tissue-based sampling and diagnosis are defined as the extraction of information from certain limited spaces and its diagnostic significance of a certain object. Pathologists deal with issues related to tumor heterogeneity since analyzing a single sample does not necessarily capture a representative depiction of cancer, and a tissue b...

Triple-negative breast cancer (TNBC) patients have a poor prognosis and few treatment options. Mouse models of TNBC are important for development of new therapies, however, few mouse models represent the complexity of TNBC. Here, we develop a female TNBC murine model by mimicking two common TNBC mutations with high co-occurrence: amplification of t...

Motivation Highly multiplexed tissue imaging allows visualization of the spatially resolved expression of multiple proteins at the single-cell level. Although imaging mass cytometry (IMC) using metal isotope-conjugated antibodies has a significant advantage of low background signal and little autofluorescence or batch effect, it has a low resolutio...

Background/aim: The complex of C-X-C motif chemokine receptor 4 (CXCR4) and its ligand, C-X-C motif chemokine ligand 12 (CXCL12), plays an essential role in cancer cell proliferation, invasion, and metastasis. These are emerging therapeutic targets, and recent studies have reported that inhibition of CXCL12-CXCR4 signaling pathway enhances the eff...

Tissue-based sampling and diagnosis is the extraction of information from specifically limited spaces and its diagnostic significance of a certain object. Pathologists deal with issues related to tumor heterogeneity since analyzing a single sample does not necessarily capture a representative depiction of cancer, and a tissue biopsy usually only pr...

Imaging mass cytometry (IMC) is a powerful multiplexed tissue imaging technology that allows simultaneous detection of more than 30 makers on a single slide. It has been increasingly used for singlecell-based spatial phenotyping in a wide range of samples. However, it only acquires a small, rectangle field of view (FOV) with a low image resolution...

Tissue-based sampling and diagnosis are defined as the extraction of information from certain limited spaces and its diagnostic significance of a certain object. Pathologists deal with issues related to tumor heterogeneity since analyzing a single sample does not necessarily capture a representative depiction of cancer, and a tissue biopsy usually...

Triple-negative breast cancer (TNBC) patients have a poor prognosis and few treatment options. Mouse models of TNBC are important for development of new targeted therapies, but few TNBC mouse models exist. Here, we developed a novel TNBC murine model by mimicking two common TNBC mutations with high co-occurrence: amplification of the oncogene MYC a...

Esophageal adenocarcinoma (EAC) develops from a chronic inflammatory environment across four stages: intestinal metaplasia, known as Barrett's esophagus, low-and high-grade dysplasia, and adenocarcinoma. Although the genomic characteristics of this progression have been well defined via large-scale DNA sequencing, the dynamics of various immune cel...

Objective The molecular mechanisms of the degeneration of the aortic wall in abdominal aortic aneurysm (AAA) are poorly understood. The monomeric form of C-reactive protein (mCRP) is deposited in damaged cardiovascular organs and aggravates the prognosis; however, it is unknown whether mCRP is deposited in the degenerated aorta of abdominal aortic...

Mosaicisms caused by postzygotic mutational events are of increasing interest because of their potential association with various human diseases. Postzygotic somatic mutations have not been well characterized however in terms of their developmental lineage in humans. We conducted whole-genome sequencing (WGS) and targeted deep sequencing in 15 orga...

Background: The deposition of monomeric C-reactive protein (mCRP) in the myocardium aggravates ischemia-reperfusion injury (IRI) and myocardial infarction. Ischemic preconditioning (IPC) is known to protect the myocardium against IRI. Methods: We evaluated the effects of IPC on myocardium upon which mCRP had been deposited due to IRI in a rat model...

Objective The molecular mechanisms of the degeneration of the aortic wall in abdominal aortic aneurysm (AAA) are poorly understood. The monomeric form of C-reactive protein (mCRP) is deposited in damaged cardiovascular organs and aggravates the prognosis; however, it is unknown whether mCRP is deposited in the degenerated aorta of abdominal aortic...

The placenta undergoes reconstruction at different times during fetal development to supply oxygen and nutrients required throughout pregnancy. To accommodate the rapid growth of the fetus, small spiral arteries undergo remodeling in the placenta. This remodeling includes apoptosis of endothelial cells that line spiral arteries, which are replaced...

The deposition of monomeric C-reactive protein (mCRP) in the myocardium aggravates ischemia-reperfusion injury (IRI) and myocardial infarction. Ischemic preconditioning (IPC) is known to protect the myocardium against IRI. We evaluated the effects of IPC on mCRP-deposited myocardium due to IRI in a rat model. Myocardial IRI was produced by ligation...

A Western diet comprising high fat, high carbohydrate, and low fiber content has been suggested to contribute to an increased prevalence of colitis. To clarify the effect of dietary cellulose (an insoluble fiber) on gut homeostasis, for 3 months mice were fed a high-cellulose diet (HCD) or a low-cellulose diet (LCD) based on the AIN-93G formulation...

A Western diet comprising high fat, high carbohydrate, and low fiber content has been suggested to contribute to an increased prevalence of colitis. To clarify the effect of dietary cellulose (an insoluble fiber) on gut homeostasis, for 3 months mice were fed a high-cellulose diet (HCD) or a low-cellulose diet (LCD) based on the AIN-93G formulation...

Background Statins are traditionally used in lowering cholesterol and low-density lipoprotein biosynthesis, but recent reports show their beneficial effect on microcirculation. The aim of this study was to investigate the effect of simvastatin on the microcirculation and in conjunction with aspirin in a rat free epigastric flap model. Methods Thirt...

Whole exome sequencing (WES) is an effective tool for the genetic diagnosis of mitochondrial disorders due to various nuclear genetic defects. In this study, three patients affected by extremely rare mitochondrial disorders caused by nuclear genetic defects are described. The medical records of each patient were reviewed to obtain clinical symptoms...

Introduction: Massive perivillous fibrin deposition (MPFD) is frequently associated with detrimental pregnancy outcomes, and extensive perivillous fibrin deposition results in severe placental dysfunction and loss of maternofetal interface. Unfortunately, the fundamental pathogenesis of MPFD remains unknown, and systematic analyses of MPFD in misc...

Objective Prognosis of myocardial infarction tends to be worse when serum C-reactive protein (CRP) level is high. miRNAs are also known to be involved in different pathogeneses of heart diseases such as myocardial infarction. However, how CRP is involved in myocardial infarction has not been fully elucidated. We hypothesized that serum CRP changes...

Normalized NanoString signals (counts) of blue myocardium. (XLSX)

Normalized NanoString signals (counts) of red myocardium. (XLSX)

The regulatory properties of pyruvate kinase M2 isoform (PKM2), the key glycolytic enzyme, influence altered energy metabolism including glycolysis in cancer. In this study, we found that PKM2 was highly expressed in patients with ulcerative colitis or colorectal cancer (CRC). We then investigated the effectiveness of conditionally ablating PKM2 in...

Patients with Beckwith-Wiedemann syndrome (BWS) are predisposed to developing embryonal tumors, with hepatoblastoma being the most common type. Our patient showed hemihypertrophy, macroglossia, and paternal uniparental disomy in chromosome 11 and was diagnosed with BWS. When the patient was nine months old, a 2.5×1.5 cm oval hypoechoic exophytic ma...

Background: Chronic hepatitis B virus (HBV) infection is a leading cause of hepatocellular carcinoma (HCC). Peripheral blood C-reactive protein (CRP) concentration and CRP overexpression in HCC cells are proven to be prognostic markers for HCC, but the significance of CRP expression in nonneoplastic hepatocytes, which are the primary origin of CRP...

Background: Chronic placental inflammation (CPI) has been implicated in the pathogenesis of diseases in premature infants, whereas retinopathy of prematurity (ROP) is a major complication primarily affecting preterm and very low-birth-weight (VLBW) infants. This study aims to investigate the association between CPI and ROP in VLBW infants. Materi...

Nonimmune hydrops fetalis is the most severe clinical manifestation of lysosomal storage diseases (LSDs). Around 14 different LSDs have been accounted for as 1-15% of the cause of nonimmune hydrops fetalis. We report a Korean infant affected by an extremely rare but severe form of sialic acid storage disease. The patient presented with nonimmune hy...

Objectives: We evaluated the effect of monomeric C-reactive protein (CRP) deposition on areas at risk (AAR) of myocardium with ischaemia-reperfusion injury. Methods: Myocardial ischaemia-reperfusion injury model was produced by ligation of the left anterior descending coronary artery for 45 min followed by 45 min of reperfusion using female Spra...

Pulmonary arteriovenous malformations are rare vascular anomalies of the lung, only a few cases of which have been diagnosed prenatally. The diagnostic clue for prenatal diagnosis was cardiomegaly with a particularly enlarged left atrium. All previous cases of pulmonary arteriovenous malformations diagnosed prenatally have been reported as an isola...

Vocal fold paralysis results from various etiologies and can induce voice changes, swallowing complications, and issues with aspiration. Vocal fold paralysis is typically managed using injection laryngoplasty with fat or synthetic polymers. Injection with autologous fat has shown excellent biocompatibility. However, it has several disadvantages suc...

Verhoeff-Van Gieson and Alcian blue staining of larynx. Verhoeff-Van Gieson (VVG) and Alcian blue (AB) staining of rabbit larynx after injection laryngoplasty into the left paralyzed vocal fold. (TIF)

Background: Immature teratoma (IT) is a tumor containing immature neuroectodermal tissue, primarily in the form of neuroepithelial tubules. However, the diagnosis of IT containing only cellular neuroglial tissue (CNT) without distinct neuroepithelial tubules is often difficult, since the histological characteristics of immature neuroectodermal tis...

We describe an ovarian mucinous neoplasm that histologically resembles lobular endocervical glandular hyperplasia (LEGH) containing pyloric gland type mucin in a patient with Peutz-Jeghers syndrome (PJS). Although ovarian mucinous tumors rarely occur in PJS patients, their pyloric gland phenotype has not been clearly determined. The histopathologic...

Background: Meconium aspiration syndrome (MAS) is a leading cause of morbidity and mortality in term infants. Meconium-stained amniotic fluid (MSAF) occurs in approximately one of every seven pregnancies, but only 5% of neonates exposed to meconium-stained amniotic fluid (MSAF) develop meconium aspiration syndrome. A fundamental question is why so...

Placental C4d deposition is frequent in preeclampsia, and shallow placentation is a characteristic of both preeclampsia and miscarriage. This study was conducted to determine the relationship among placental C4d, maternal human leukocyte antigen (HLA) antibodies, and placental pathology in preeclampsia and miscarriage cases. The patient population...

This study examined the occurrence of placental C-reactive protein (CRP) in normal pregnancy with term delivery, spontaneous preterm delivery (sPTD), preeclampsia, and miscarriage. CRP immunoreactivity was detected in the syncytiotrophoblast. The immunopositive rate was significantly higher in sPTD than preeclampsia. The CRP immunopositive rate was...

Aims Primary histopathology of miscarriage remains undetermined in the majority of cases. This study was conducted to determine histological characteristics pertinent to miscarriage. Methods The study groups were composed of elective abortions (n=29) and miscarriages (n=45) comprised of chromosomally normal (n=15) and abnormal cases (n=30). Immunoh...

Objective: Poly(lactic-co-glycolic acid) (PLGA) is an aliphatic polyester and one of the most commonly used synthetic biodegradable polymers for tissue engineering. The objectives of this study were to evaluate the biocompatibility of PLGA/Pluronic F127 in the vocal fold. Study design: A randomized, prospective, controlled animal study. Setting...

Abstract Objective: Acute funisitis is a histologic hallmark of the fetal inflammatory response syndrome. This study was conducted to examine the hematologic profiles of preterm newborns with funisitis. Methods: The hematologic profiles of umbilical cord blood obtained at birth were compared according to the presence or absence of acute funisitis i...

Placental C4d deposition is a feature of classical complement pathway activation and has been documented in various obstetrical settings. However, it is unknown whether placental C4d deposition is present in miscarriages and its frequency is different between chromosomally normal and abnormal miscarriages. This study was conducted to assess villous...

To determine the influence of pregnancy-related knowledge and the risk perception on reproductive decision making in women with epilepsy. We enrolled women with epilepsy, who were of reproductive age and were considering having children in the future. A questionnaire was used to assess the level of pregnancy-related knowledge, perception of the off...

We compared the efficacy between low anterior resection with primary anastomosis (LARA) and Hartmann's procedure (HP) in advanced primary or recurrent epithelial ovarian cancer (EOC). We reviewed medical records of 61 patients with advanced primary or recurrent EOC who underwent LARA or HP between January 1998 and August 2008. In 37 patients with p...

Heterologous sarcomas of the uterus are rare neoplasms. We report a rare case of heterologous uterine sarcoma composed of leiomyosarcomatous and liposarcomatous components with a brief review of literature. A 53-year-old woman had vaginal spotting. The endometrial biopsy performed at a local clinic revealed a high grade spindle cell sarcoma. Pelvis...

The incidence of acute leukemia in pregnancy is as low as 1 in 75,000 pregnancies. There is no established guideline for the treatment of leukemia during midtrimester pregnancy. But nowadays, consensus is not to delay the leukemia treatment with chemotherapy even in pregnancy. Many authors reported successful outcomes of mothers and newborns. Becau...