1.The prevalence of hepatitis B surface antigen among Korean by literature review.
Byung Yeol CHUN ; Mi Kyeong LEE ; Yun Kyeong RHO
Korean Journal of Epidemiology 1992;14(1):70-78
No abstract available.
Hepatitis B Surface Antigens*
;
Hepatitis B*
;
Hepatitis*
;
Prevalence*
2.A Case Report of Duodenal Diaphragm Misdiagnosed as a Bulimia.
Yong Joo LEE ; Eun Kyeong LEE ; Kyeong Bin RHO ; Yun Lyeon KIM ; Suk Ja CHOI ; Yong Joo KIM
Korean Journal of Gastrointestinal Endoscopy 1995;15(3):545-551
Duodenal diaphragm is a rare congenital anomaly among the congenital duodenal obstructions. Its symptom and sign usually appear since birth if obstruction is complete. The clinical manifestations of incompletely obstructive duodenal diaphragm are intermittent vomiting, abdominal pain and poor weight gain. Diagnosis may be delayed in this case. Authors experienced a case of incomplete duodenal diaphragm with a central hole. A 29 months old girl presented failure to thrive, intermittent episodes of bloating, abdominal discomfort and occasional vomiting. The patient vomited every 10-14 days, then the abdominal pain and distention were relieved. She overate for about 10 days until the next projectile vomiting. The vomitus frequently contained food ingested several days previously. Plain x-ray films of abdomen showed marked gastric distention. Upper gastrointestinal series revealed marked distention of the duodenum with windsock configuration and radiolucent line at the third portion of the duodenum. On gastroscopic examination, gastric bezoar impacting the pyloric canal and antrum was noted. At operation, we found mucosal membrane in the third portion of the duodenum and bezoar(Chinese cabbage) above the membrane. Side-to-side duodeno-jejunostomy was performed and bezoar was removed. She was discharged on the 13th postoperative day without any complication.
Abdomen
;
Abdominal Pain
;
Bezoars
;
Bulimia*
;
Child, Preschool
;
Diagnosis
;
Diaphragm*
;
Duodenal Obstruction
;
Duodenum
;
Failure to Thrive
;
Female
;
Humans
;
Membranes
;
Parturition
;
Vomiting
;
Weight Gain
;
X-Ray Film
3.Relationship of Body Fat Distribution and Serum Lipids in Men.
Byung Yeol CHUN ; Min Hae YEH ; Sung Kook LEE ; Yun Kyeong RHO ; Soon Yeol NAM
Korean Journal of Epidemiology 1994;16(1):28-40
This study was conducted to investigate the relationship of body fatness indicators and serum lipids (total cholesterol, high density lipoprotein (HDL) cholesterol, low density lipoprotein(LDL) cholesterol, triglycerides, myocardial infarction(MI) index) to find anthropometric indicators of body fat distribution that are strongly associated with serum lipids. 347 adult male workers of an industry in Kyungpook province were selected and data on the general characteristics were obtained using questionnaire from June 26 to June 29, 1991. Serum lipids were tested with 5 ml fasting blood and height, weight, circumferences of waist, hip and mid-thigh, five subcutaneous fat thickeness(biceps, triceps, supscapular, suprailiac, thigh) were mea sured using Ultrasound type A TATT. Waist circumference, waist/hip circumference ratio and subcutaneous fat thickness of suprailiac area are significantly increased with increasing age, but thigh circumference is significantly decreased (P< 0.05). These results suggest that central obesity is closely related to age and waist circumference may be the best indicator of body fatness or body fat distribution in men. In younger age group(below 40 year old), the result of canonical correlations analysis suggests that circumferences(0.501) was slightly closely related to serum lipids than subcutaneous fat thickness(0.493), however, in older age group (above 40 year old), subcutaneous fat thickness(0.528) were more strongly associated with serum lipids than circumferences(0.419). Weighted canonical analyses suggest that biceps and suprailiac areas in younger age group and sub scapular area in older age group are stronger indicators of serum lipids among .subcutaneous fatness measurements. Of the circumferences, waist is the most strongest indicator of serum lipids in both age groups. Therefore, it is recommended that circumference of waist and subcutaneous fat thickness of subscapular area should be measured to estimate the degree of central obesity for preventing cardiovascular disease in men.
Adipose Tissue*
;
Adult
;
Body Fat Distribution*
;
Cardiovascular Diseases
;
Cholesterol
;
Fasting
;
Gyeongsangbuk-do
;
Hip
;
Humans
;
Lipoproteins
;
Male
;
Obesity, Abdominal
;
Subcutaneous Fat
;
Thigh
;
Triglycerides
;
Ultrasonography
;
Waist Circumference
;
Surveys and Questionnaires
4.Relation of long-term weight change to risk factors for coronary artery disease.
Sung Kook LEE ; Byung Yeol CHUN ; Kyung Min PARK ; Yun Kyeong RHO ; Jin Wouk JEONG ; Min Hae YEH
Korean Journal of Epidemiology 1993;15(2):132-148
No abstract available.
Coronary Artery Disease*
;
Coronary Vessels*
;
Risk Factors*
5.Leisure time physical activity and its relationship to coronary risk factors in male workers.
Yun Kyeong RHO ; Mi Hae YEH ; Sung Kook LEE ; Byung Yeol CHUN
Korean Journal of Preventive Medicine 1993;26(3):332-346
This study was attempted to observe leisure time physical activity pattern and its relationship to coronary risk factors(BMI, systolic blood pressure, diastolic blood pressure, serum total cholesterol, triglycerides, fasting blood sugar). Subjects participated in this study were 277 adult male workers of an industry in Kyungpook province, Korea. Energy expenditure were measured using modified Physical Activity History questionnaire of CARDIA study by interviewing. Serum total cholesterol, triglycerides and blood sugar level were tested with 5 ml fasting blood and height, weight and blood pressure were measured. Data on smoking and drinking habits and others were obtained. Geometric mean of leisure time physical energy expenditure were estimated as 212.80 kcal per week for study subjects and only 22.4% of them expended 2,000 kcal or more per week in leisure time physical activity. Taking walks or hikes and jogging or running were more frequent leisure time physical activities in study subjects. Statistically significant mean differences in total weekly leisure time physical activity for all coronary risk factors were not found among three groups. Because energy expenditure of leisure time was generally low in this subjects and most of them were healthy men, we did not found that leisure time physical activity was significantly associated with coronary risk factors.
Adult
;
Blood Glucose
;
Blood Pressure
;
Cardia
;
Cholesterol
;
Drinking
;
Energy Metabolism
;
Fasting
;
Gyeongsangbuk-do
;
Humans
;
Jogging
;
Korea
;
Leisure Activities*
;
Male*
;
Motor Activity*
;
Surveys and Questionnaires
;
Risk Factors*
;
Running
;
Smoke
;
Smoking
;
Triglycerides
6.Association of Microbial Dysbiosis with Gallbladder Diseases Identified by Bile Microbiome Profiling
Seong Ji CHOI ; Yeseul KIM ; Jehyun JEON ; Ho-Jin GWAK ; Mimi KIM ; Kyojin KANG ; Yohan KIM ; Jaemin JEONG ; Yun Kyung JUNG ; Kyeong Geun LEE ; Ho Soon CHOI ; Dong-Hwan JUNG ; Sung-Gyu LEE ; Yangsoon LEE ; Su-Jin SHIN ; Kiseok JANG ; Mina RHO ; Dongho CHOI
Journal of Korean Medical Science 2021;36(28):e189-
Background:
Cholecystitis is an important risk factor for gallbladder cancer, but the bile microbiome and its association with gallbladder disease has not been investigated fully.We aimed to analyze the bile microbiome in normal conditions, chronic cholecystitis, and gallbladder cancer, and to identify candidate bacteria that play an important role in gallbladder carcinogenesis.
Methods:
We performed metagenome sequencing on bile samples of 10 healthy individuals, 10 patients with chronic cholecystitis, and 5 patients with gallbladder cancer, and compared the clinical, radiological, and pathological characteristics of the participants.
Results:
No significant bacterial signal was identified in the normal bile. The predominant dysbiotic bacteria in both chronic cholecystitis and gallbladder cancer were those belonging to the Enterobacteriaceae family. Klebsiella increased significantly in the order of normal, chronic cholecystitis, and gallbladder cancer. Patients with chronic cholecystitis and dysbiotic microbiome patterns had larger gallstones and showed marked epithelial atypia, which are considered as precancerous conditions.
Conclusion
We investigated the bile microbiome in normal, chronic cholecystitis, and gallbladder cancer. We suggest possible roles of Enterobacteriaceae, including Klebsiella, in gallbladder carcinogenesis. Our findings reveal a possible link between a dysbiotic bile microbiome and the development of chronic calculous cholecystitis and gallbladder cancer.
7.Association of Microbial Dysbiosis with Gallbladder Diseases Identified by Bile Microbiome Profiling
Seong Ji CHOI ; Yeseul KIM ; Jehyun JEON ; Ho-Jin GWAK ; Mimi KIM ; Kyojin KANG ; Yohan KIM ; Jaemin JEONG ; Yun Kyung JUNG ; Kyeong Geun LEE ; Ho Soon CHOI ; Dong-Hwan JUNG ; Sung-Gyu LEE ; Yangsoon LEE ; Su-Jin SHIN ; Kiseok JANG ; Mina RHO ; Dongho CHOI
Journal of Korean Medical Science 2021;36(28):e189-
Background:
Cholecystitis is an important risk factor for gallbladder cancer, but the bile microbiome and its association with gallbladder disease has not been investigated fully.We aimed to analyze the bile microbiome in normal conditions, chronic cholecystitis, and gallbladder cancer, and to identify candidate bacteria that play an important role in gallbladder carcinogenesis.
Methods:
We performed metagenome sequencing on bile samples of 10 healthy individuals, 10 patients with chronic cholecystitis, and 5 patients with gallbladder cancer, and compared the clinical, radiological, and pathological characteristics of the participants.
Results:
No significant bacterial signal was identified in the normal bile. The predominant dysbiotic bacteria in both chronic cholecystitis and gallbladder cancer were those belonging to the Enterobacteriaceae family. Klebsiella increased significantly in the order of normal, chronic cholecystitis, and gallbladder cancer. Patients with chronic cholecystitis and dysbiotic microbiome patterns had larger gallstones and showed marked epithelial atypia, which are considered as precancerous conditions.
Conclusion
We investigated the bile microbiome in normal, chronic cholecystitis, and gallbladder cancer. We suggest possible roles of Enterobacteriaceae, including Klebsiella, in gallbladder carcinogenesis. Our findings reveal a possible link between a dysbiotic bile microbiome and the development of chronic calculous cholecystitis and gallbladder cancer.
8.Loss of EMP2 Inhibits Melanogenesis of MNT1 Melanoma Cells via Regulation of TRP-2
Enkhmend ENKHTAIVAN ; Hyun Ji KIM ; Boram KIM ; Hyung Jung BYUN ; Lu YU ; Tuan Minh NGUYEN ; Thi Ha NGUYEN ; Phuong Anh DO ; Eun Ji KIM ; Kyung Sung KIM ; Hiệu Phùng HUY ; Mostafizur RAHMAN ; Ji Yun JANG ; Seung Bae RHO ; Ho LEE ; Gyeoung Jin KANG ; Mi Kyung PARK ; Nan-Hyung KIM ; Chang Ick CHOI ; Kyeong LEE ; Hyo Kyung HAN ; Jungsook CHO ; Ai Young LEE ; Chang Hoon LEE
Biomolecules & Therapeutics 2022;30(2):203-211
Melanogenesis is the production of melanin from tyrosine by a series of enzyme-catalyzed reactions, in which tyrosinase and DOPA oxidase play key roles. The melanin content in the skin determines skin pigmentation. Abnormalities in skin pigmentation lead to various skin pigmentation disorders. Recent research has shown that the expression of EMP2 is much lower in melanoma than in normal melanocytes, but its role in melanogenesis has not yet been elucidated. Therefore, we investigated the role of EMP2 in the melanogenesis of MNT1 human melanoma cells. We examined TRP-1, TRP-2, and TYR expression levels during melanogenesis in MNT1 melanoma cells by gene silencing of EMP2. Western blot and RT-PCR results confirmed that the expression levels of TYR and TRP-2 were decreased when EMP2 expression was knocked down by EMP2 siRNA in MNT1 cells, and these changes were reversed when EMP2 was overexpressed. We verified the EMP2 gene was knocked out of the cell line (EMP2 CRISPR/Cas9) by using a CRISPR/Cas9 system and found that the expression levels of TRP-2 and TYR were significantly lower in the EMP2 CRISPR/Cas9 cell lines. Loss of EMP2 also reduced migration and invasion of MNT1 melanoma cells. In addition, the melanosome transfer from the melanocytes to keratinocytes in the EMP2 KO cells cocultured with keratinocytes was reduced compared to the cells in the control coculture group. In conclusion, these results suggest that EMP2 is involved in melanogenesis via the regulation of TRP-2 expression.
9.PRR16/Largen Induces Epithelial-Mesenchymal Transition through the Interaction with ABI2 Leading to the Activation of ABL1 Kinase
Gyeoung Jin KANG ; Jung Ho PARK ; Hyun Ji KIM ; Eun Ji KIM ; Boram KIM ; Hyun Jung BYUN ; Lu YU ; Tuan Minh NGUYEN ; Thi Ha NGUYEN ; Kyung Sung KIM ; Hiệu Phùng HUY ; Mostafizur RAHMAN ; Ye Hyeon KIM ; Ji Yun JANG ; Mi Kyung PARK ; Ho LEE ; Chang Ick CHOI ; Kyeong LEE ; Hyo Kyung HAN ; Jungsook CHO ; Seung Bae RHO ; Chang Hoon LEE
Biomolecules & Therapeutics 2022;30(4):340-347
Advanced or metastatic breast cancer affects multiple organs and is a leading cause of cancer-related death. Cancer metastasis is associated with epithelial-mesenchymal metastasis (EMT). However, the specific signals that induce and regulate EMT in carcinoma cells remain unclear. PRR16/Largen is a cell size regulator that is independent of mTOR and Hippo signalling pathways. However, little is known about the role PRR16 plays in the EMT process. We found that the expression of PRR16 was increased in mesenchymal breast cancer cell lines. PRR16 overexpression induced EMT in MCF7 breast cancer cells and enhances migration and invasion. To determine how PRR16 induces EMT, the binding proteins for PRR16 were screened, revealing that PRR16 binds to Abl interactor 2 (ABI2). We then investigated whether ABI2 is involved in EMT. Gene silencing of ABI2 induces EMT, leading to enhanced migration and invasion. ABI2 is a gene that codes for a protein that interacts with ABL proto-oncogene 1 (ABL1) kinase. Therefore, we investigated whether the change in ABI2 expression affected the activation of ABL1 kinase. The knockdown of ABI2 and PRR16 overexpression increased the phosphorylation of Y412 in ABL1 kinase. Our results suggest that PRR16 may be involved in EMT by binding to ABI2 and interfering with its inhibition of ABL1 kinase. This indicates that ABL1 kinase inhibitors may be potential therapeutic agents for the treatment of PRR16-related breast cancer.