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Prediction Model for Screening Patients at Risk of Malnutrition after Gastric Cancer Surgery
Ji-Hyeon Park,Eunjung Kim,Eun-Mi Seol,Seong-Ho Kong,Do-Joong Park,Han-Kwang Yang,Jong-Ho Choi,Shin-Hoo Park,Hwi-Nyeong Choe,Meera Kweon,Jiwon Park,Yunhee Choi,Hyuk-Joon Lee 대한외과학회 2020 대한외과학회 학술대회 초록집 Vol.2020 No.11
Eunjung Choi,Jun Young Park,Hungu Lee,Sang Young Park,Kyu Hong Choi 한국항공우주학회 2008 한국항공우주학회 학술발표회 논문집 Vol.- No.-
The spaceborne GPS receiver is one of the indispensable payloads for the high-resolution earth observation satellites. In this paper, the onboard software architecture, implementation and test results as well as the hardware system related to the on board software are described. The hardware design is mainly built with the 12 channel Ll C/A code baseband correlator and 32-bit floating-point DSP microprocessor. The onboard software architecture is designed using DSP/BIOS to support the real-time multitasking operating system. The on board software of the enhanced spaceborne GPS receiver contains the task scheduling, the algorithms of GPS signal baseband processing, satellite ephemeris calculations and real-time orbit determination. The performance test is based on hardware-in-the-loop simulations using GPS simulator. The experimental results show that implemented software gives the fast TTFF and stable tracking of GPS SV. In the event, the enhanced spaceborne GPS receiver is able to provide the position and velocity stably.
Cutaneous Pseudolymphoma caused by hair dye
( Eunjung Park ),( Taehan Koo ),( Mingyul Jo ),( Jisook Yoo ),( Mihn-sook Jue ),( Min-soo Kim ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1
Cutaneous pseudolymphoma (CPL) refers to a group of benign T or/and B-cell lymphoproliferative processes of diverse causes that resemble cutaneous lymphomas. Lymphomatoid contact dermatitis (LCD) is a form of CPL that was first described in 1976 by Orbaneja. Since then, various antigens have been reported to cause this type of CPL. A 72-year-old male with presented with an 1-year history of a solitary erythematous crusted patch on right temple. He had a medical history of allergic contact dermatitis, seborrheic dermatitis and diabetes mellitus. He had been regularly coloring his hair for several years. Punch biopsy revealed a dense, nodular, dermal infiltrate of lymphocytes that formed lymphoid follicles surrounded by well-defined mantle zones with scattered tingible-body macrophages. Immunohistochemical staining revealed nodular aggregates of CD20+ lymphocytes, infiltrate of predominantly CD3, 4, 5, 8 + lymphocytes, and positive for the germinal center cell markers Bcl-6, CD10, Bcl-2, and Ki-67. Polyclonal immunoglobulin H gene rearrangement was detected. The diagnosis of CPL was finally made based on the clinical, histologic, and molecular findings. The patient was treated with intralesional injection of triamcinolone acetonide and the lesion was resolved. We herein report a rare case of CPL caused by hair dye. Clinicians should be aware of potential causative agent of hair dye for the development of CPL.
Park, Mi-Hyun,Han, Yeong-Deok,Kwon, Choon Bong,Lee, Eun Sun,Kim, Ji Hye,Kang, Youn Seung,Kim, Se-Joo,Yang, Hee-Min,Park, Taeseo,Yoo, Jung-Sun,Kil, Hyun-Jong,Nam, Eunjung,Shin, Mann Kyoon,Min, Gi-Sik The National Institute of Biological Resources 2017 Journal of species research Vol.6 No.no.spc
In this list-format paper, we present unrecorded species of Korean ciliates (phylum Ciliophora). All species were selected from the final reports of the project: "Discovery of Korean Indigenous Species". This project has been carried out to discover and record various Korean indigenous species since 2006 and is funded by the National Institute of Biological Resources (NIBR). Among the various species, ciliates were a major taxon that was highlighted in this project as a speciose group categorized under Protozoa. This paper contains reports of 38 ciliates (8 classes, 16 orders, 23 families, and 34 genera) observed in Korea during the initial five years of the project (2006-2010).
Angioimmunoblastic T-cell lymphoma initially diagnosed from skin lesions
( Eunjung Park ),( Taehan Koo ),( Mingyul Jo ),( Jisook Yoo ),( Min-soo Kim ),( Mihn-sook Jue ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1
Angioimmunoblastic T-cell lymphoma (AITL) is a subtype of peripheral CD4+ T-cell lymphoma. Skin lesions have been reported to occur in 40-50% of AITL cases, but it is difficult to doubt AITL with only cutaneous lesions because of its various and nonspecific cutaneous findings. A 58-year-old male, who was admitted in hemato-oncology department for generalized edema since 3 weeks ago, was consulted to our department for dermatologic evaluation. Physical examination showed asymptomatic, generalized erythematous maculopatches on trunk and extremities. He had no subjective symptom. He had medical history of alcoholic liver cirrhosis and rectal cancer. Skin biopsies revealed perifollicular and periadnexal lymphocytic infiltration in dermis and immunohistochemical stains were positive for CD3, CD4, CD8, CD20, PD-1 and 20% of Ki-67, and negative for Epstein-Barr virus encoded small RNAs in situ hybridization. Systemic evaluations were performed for the suspicion of AITL. Abdominal and pelvic computed tomography showed signs of local lymphatic metastasis. Positron emission tomography showed multiple metastatic lymphadenopathies and metastasis to appendix and pancreas. Omental, mesentary lymph node biopsies were also done, which revealed AITL. The patient underwent chemotherapy regimen for CHOP. We herein report a case of AITL which was initially diagnosed from skin biopsy to emphasize the importance of clinical suspicion in diagnosing lymphomas.
Park, Ji Chan,Heo, Eunjung,Kim, Aram,Kim, Mijong,Park, Kang Hyun,Song, Hyunjoon American Chemical Society 2011 The Journal of Physical Chemistry Part C Vol. No.
<P>In the present study, we optimize the yolk–shell nanostructure in a palladium–silica system for the purpose of attaining high activity in Suzuki cross-coupling reactions. Pd@porous SiO<SUB>2</SUB> (Pd@pSiO<SUB>2</SUB>) yolk–shell nanoparticles, bearing tiny palladium cores and highly porous silica hollow shells, were synthesized by direct silica coating and partial etching of the silica layers. High temperature treatment removed all surfactants around the catalyst surface and generated large pores on the silica shells. The resulting Pd@pSiO<SUB>2</SUB> yolk–shell catalysts exhibited extremely high initial turnover frequency of 78000 h<SUP>–1</SUP>, as well as excellent reusability of more than 10 times in a standard Suzuki coupling reaction. The catalysts also catalyzed Suzuki reactions with various substrates including bromo- and chlorobenzene very well.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpccck/2011/jpccck.2011.115.issue-32/jp2021825/production/images/medium/jp-2011-021825_0005.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jp2021825'>ACS Electronic Supporting Info</A></P>
( Eunjung Kim ),( Ji-hyeon Park ),( Eun-mi Seol ),( Seong-ho Kong ),( Do Joong Park ),( Han-Kwang Yang ),( Hyuk-joon Lee ) 한국정맥경장영양학회 2021 한국정맥경장영양학회지 Vol.13 No.2
Purpose: This study investigated change of body mass index (BMI) and nutritional biochemical markers after gastrectomy according to the preoperative obesity in the elderly gastric cancer patients, and evaluated their short- and long-term clinical outcomes. Materials and Methods: Gastric cancer patients (age≥65 years, BMI≥25 kg/㎡) who underwent curative gastrectomy from 2014 to 2015 were enrolled in this study. BMI, comorbidity, extent of surgical resection, surgical approaches, postoperative complications, cancer stage, adjuvant chemotherapy, and survival data were collected. Nutritional parameters were collected until 4 years after surgery. The patients were classified into two groups according to preoperative BMI: Obesity group (25 kg/㎡≤BMI<30 kg/㎡) and severe-obesity group (BMI≥30 kg/㎡). Results: Of the total 266 patients, 210 patients were categorized as the obesity group and 16 as the severe-obesity group. Postoperative complications were comparable between the two groups. The BMI decreased by more than 10% at 12 months after gastrectomy, and remained at a similar level during the 4 year-follow-up period in both groups. At 4 years after surgery, the nutritional biomarkers were nearly comparable to preoperative levels in each group. The severeobesity group were associated with poor overall survival rate (P=0.011). Conclusion: BMI decreased by more than 10% after gastrectomy in obese elderly, but nutritional biomarker levels were comparable before and after gastrectomy. The overall survival rate was lower in severely obese elderly than in obese elderly. Therefore, it is considered that severely obese elderly gastric cancer patients should be monitored, and vigorous efforts are needed to reduce high-BMI.
( Eunjung Park ),( Taehan Koo ),( Mingyul Jo ),( Jisook Yoo ),( Min-soo Kim ),( Mihn-sook Jue ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1
Cutaneous mucormycosis (CM) is a rare opportunistic fungal infection caused by the order Mucorales, which associated with trauma, burns and surgical wounds. A 84-year-old male visited our clinic complaining of black necrotic ulcer with erythematous halo on right lateral shin since 2 weeks ago. The patient had medical history of hypertension and pityriasis lichenoides et varioliformis acuta (PLEVA) treated with 200mg/day of doxycycline. Physical examination revealed multiple, 1 to 3cm-sized, irregularly shaped ulcers with black eschar and peripheral erythematous halo simulating an ecthyma gangrenosum were on right shin, where the skin lesion of PLEVA was located. He denied any history of trauma on the lesion. He had no systemic symptoms. Skin biopsies were conducted from center and margin of the lesion, showed necrosis and inflammatory cell infiltration in the dermis to subcutaneous layer, and large, non-septate, right-angled branching hyphae with positive special staining for periodic acid-Schiff and Gomori methenamine silver. Rhizopus species was isolated from tissue culture, which was consistent with CM. The patient was successfully treated with a combination of surgical debridement and 20mg/day of amphotericin B intravenously, and the lesion was totally reepithelialized without any evidence of eschar. We herein report a interesting and educative case of CM arising in the site of PLEVA.
Hydrochlorothiazide use and risk of skin cancer: A nationwide retrospective cohort study in Korea
( Eunjung Park ),( Young Lee ),( Mihn-sook Jue ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.2
Background: Hydrochlorothiazide (HCTZ) is the one of the most commonly prescribed antihypertensive drug and recent data has shown an association between HCTZ use and skin cancer (SC). However, there have been no studies about HCTZ use and the risk of SC in Asian population. Objectives: Examine the risk of SC in the cohort of Korean hypertension patients. Methods: We conducted a retrospective, population-based cohort study using database from the Health Insurance Review and Assessment (HIRA) Service from 2009 to 2016. The risk of SC was evaluated by multivariable Cox proportional hazard ratio (HR) modeling. Covariates included age, sex, comorbidities and prior history of photosensitizing drugs and other medications known to potentially affect the SC risk. Results: A total of 1,714,590 patients with HCTZ-users and 1,851,362 of non-HCTZ users were enrolled. The overall risk of SC was 42.67 and 40.23 per 1000,000 person-years in HCTZ-users and non-HCTZ users, respectively. Compared with non-HCTZ users, no statistically significant associations with the risk of all SC in HCTZ-users (HR=0.97, 95% CI, 0.93-1.02, p=0.26). Whereas, the risk of melanoma was decreased in the HCTZ-users (HR=0.89, 95% CI, 0.81-0.99, p=0.03), and no statistically significant association was seen in the risk of nonmelanoma skin cancer (NMSC) (HR=0.99, 95% CI, 0.94-1.04, p=0.77). Conclusion: Use of HCTZ use maybe associated with decreased risk of melanoma, and no association in the risk of NMSC.