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Urushiol Induces Growth Inhibition and Apoptosis in MCF-7 Human Breast Cancer Cells
Seaho Kim,So-Hyun Jeong,Mohammad Akbar Hossain1,Min Young Kim,김동환,Jin-Ah Kim,윤정현,나천수,김남득 대한암예방학회 2009 Journal of cancer prevention Vol.14 No.4
In this study, we investigated the effects of urushiol which was isolated from the sap of Korean lacquer tree (Rhus vernicifera Stokes), on the proliferation of MCF-7 human breast cancer cells. Forty-eight hour treatment of urushiol inhibited the growth of breast cancer cells and induced cell DNA fragmentation. This urushiol-induced apoptosis in the MCF-7 cells was closely linked with the down-regulation of Bcl-2 protein expression and the cleavage of poly (ADP-ribose) polymerase. Urushiol also caused a marked increase in the level of p21WAF1/CIP1protein in a p53-dependent manner. Based on our data, urushiol can be considered as a good candidate for an effective chemotherapeutic agent inducing apoptosis of cancer cells, although further study will be needed to confirm this.
( Jae Young Jang ),( Soung Won Jeong ),( Sung Ran Cheon1 ),( Sae Hwan Lee1 ),( Sang Gyune Kim ),( Young Koog Cheon ),( Young Seok Kim1 ),( Young Deok Cho1 ),( Hong Soo Kim ),( So Young Jin ),( Yun Soo 대한간학회 2011 Clinical and Molecular Hepatology(대한간학회지) Vol.17 No.3
Background/Aims: We investigated the frequency of occult hepatitis B virus (HBV) infection in anti-hepatitis C virus (HCV)-positive individuals and the effects of occult HBV infection on the severity of liver disease. Methods: Seventy-one hepatitis B virus surface-antigen (HBsAg)-negative patients were divided according to their HBV serological status into groups A (anti-HBc positive, anti-HBs negative; n=18), B (anti-HBc positive, anti-HBs positive; n=34), and C (anti-HBc negative, anti-HBs positive/negative; n=19), and by anti-HCV positivity (anti-HCV positive; n=32 vs. anti-HCV negative; n=39). Liver biopsy samples were taken, and HBV DNA was quantified by real-time PCR. Results: Intrahepatic HBV DNA was detected in 32.4% (23/71) of the entire cohort, and HBV DNA levels were invariably low in the different groups. Occult HBV infection was detected more frequently in the anti-HBc-positive patients. Intrahepatic HBV DNA was detected in 28.1% (9/32) of the anti-HCV-positive and 35.9% (14/39) of the anti-HCV-negative subjects. The HCV genotype did not affect the detection rate of intrahepatic HBV DNA. In anti-HCV-positive cases, occult HBV infection did not affect liver disease severity. Conclusions: Low levels of intrahepatic HBV DNA were detected frequently in both HBsAg-negative and anti-HCV-positive cases. However, the frequency of occult HBV infection was not affected by the presence of hepatitis C, and occult HBV infection did not have a significant effect on the disease severity of hepatitis C. (Korean J Hepatol 2011;17:206-212)
( Hyo Yeon Gwak ),( Jung Eun Lee ),( Ju Young Choi ),( So Yeon Kim ),( Song Mi Park ),( June Seek Choi1,),( Hyun Kyong Ahn ),( Min Hyung Kim ),( Jin Hoon Chung ),( Moon Young Kim ),( Hyun Mee Ryu ),( 대한산부인과학회 2014 대한산부인과학회 학술대회 Vol.100 No.-
목적: To evaluate the positive effects of teratogenic risk counseling in pregnant women inadvertently exposed to medication in early pregnancy. 방법: In a prospective cohort study, 250 pregnant women exposed to medications in early pregnancy were recruited after teratogenic risk counseling at Korean MotherSafe Counsling Center, which has given information about teratogenic risk of medication to pregnant women. Positive effects are evaluated by visual analogue scale(VAS) for perception on teratogenic risk and percent prefering termination of pregnancy after medication exposures in pregnancy. 결과: Mean age of participants is 31.8±5.3years old. Mean gravidity is 2.4±2.1. Medications exposed in early pregnancy include antibiotics, analgesics, anti-inflammatory drugs, antacid and so on. Mean perceptive teratogen risk before and after the counseling is 33.9±1.6% and 15.8±1.6%, respectively. And mean percent prefering termination of pregnancy (≥5) before and after the counseling is 31.1±1.9% and 13.5±1.7%, respectively. 결론: Our data suggest that information on teratogenic risk for pregnant women inadvertently exposed to medication may have positive effects for reassuring pregnant women and preventing termination of pregnancy.
악성 종양의 추적 관찰 중 PET-CT에서 발견된 갑상선의 우연종
김중석,최소영,노효근,김세중,김윤정<SUP>1<,SUP>,현인영<SUP>2<,SUP>,김영모<SUP>3<,SUP>,조영업,Joong Suck Kim,M,D,So-young Choi,M,D,Ph,D,Hyo Keun No,M,D,Sei Joong Kim,M,D,Ph,D,Youn Jeong Kim,M,D,Ph,D,<SUP>1<,SUP>,In Young Hyun 대한갑상선-내분비외과학회 2010 The Koreran journal of Endocrine Surgery Vol.10 No.4
Purpose: The incidence of thyroid cancer is increasing in Korea, partially owing to the development of diagnostic tools. Positron emission tomography (PET)-computed tomography (CT), in particular, has generally been used for evaluation of metastasis and follow-up of malignancy. Methods: We retrospectively investigated 2,833 patients with PET-CT for metastasis work-up or cancer follow-up, which was performed between January 1998 and May 2008 at Inha University Hospital. Of them, abnormal thyroid findings were discovered in 181 patients and we studied the result of further evaluation or follow-up PET-CT. Results: Thyroid cancer was diagnosed in 26 patients, including metastatic cancer in 3 patients, and non-operated primary cancer in 2 patients. Other 21 patients received operation, which in all histopathologically revealed papillary carcinoma. The mean age of the 21 patients was 55.4 years. Nine patients had a history of radiotherapy. The site of malignant nodule was discordant between PET-CT and histopathologic result in 6 patients. The mean size of malignant nodules was 9.45 mm (0.1∼23 mm) with microcarcinoma in 10 patients (47.6%). The mean interval between diagnoses was 15.8 months, and in 4 patients operations for two malignancies were performed in a same day. The incidence of thyroid cancer was significantly high in female patients, but the differences of incidence among different cancer groups were not significant for female patients. Conclusion: Early diagnosis of synchronous or secondary thyroid cancer by PET-CT in cancer patients can make early treatment and better strategies for multiple malignancies possible. (Korean J Endocrine Surg 2010;10:249-255)
OB-11 : Placental microRNAs as potential biomarkers for noninvasive detection of trisomy 21
( Min Hyoung Kim ),( Ji Hyae Lim ),( Da Eun Lee ),( Jung Yeol Han ),( Moon Young Kim ),( You Jung Han ),( So Yeon Park ),( Hyun Mee Ryu1 ) 대한산부인과학회 2014 대한산부인과학회 학술대회 Vol.100 No.-
목적: The discovery of fetal nucleic acids in the plasma of pregnant women has led to the development of noninvasive prenatal testing (NIPT). The objective of this study was to discover a panel of placental miRNAs as potential novel biomarkers for NIPT of fetal T21 and to predict the biological functions of new biomarkers using bioinformatics tools. 방법: Using microarray-based genome-wide expression profiling, we compared the expression levels of miRNAs in whole blood samples from non-pregnant women, whole blood samples from pregnant women, and fetal placenta samples from pregnant women with euploid or T21 fetuses. We analyzed the differentially expressed miRNAs according to the presence or absence of disease and tissue type (p value <0.05 and two-fold expression change). Potential target genes of miRNAs were predicted using the miRBase program. To predict their functions, the functional annotation tools provided by the WebGestalt database were used. 결과: We identified 299 miRNAs which reasonably separate the whole blood from the placenta. Among the identified miRNAs, 150 miRNAs were up-regulated in the placenta, and 149 miRNAs were down-regulated. Most of the up-regulated miRNAs in the placenta were members of the mir-498, mir-379, and mir-127 clusters as placenta specific miRNA located on hsa19 and hsa14. Among the up-regulated miRNAs in the placenta, mir-1973 and mir-3196 were expressed at higher levels in the T21 placenta than in the euploid placenta. The two miRNAs potentially regulate 203 target genes that are involved in developmentof brain, central nervous system, and nervous system. Interestingly, the genes are significantly associated with T21-related disorder such as congenital abnormalities, mental disorders, and nervous system diseases. 결론: Our study indicates placenta-specific miRNAs that may be potential biomarkers for NIPT of fetal T21 and provides new insights into the molecular mechanisms of T21 via regulation of miRNAs.
Anti-osteoporotic Effects of Sericin-Calcium Conjugate in Ovariectomized Rats
Ehn-Kyoung Choi, Dongsun Park, So-Young Choi , Yun-Hui Yang, Seock-Yeon Hwang, Seongho Yeon, Jeong-Yong Lee, Ill-Hwa Kim, Yun-Bae Kim, Hyun-Gu Kang1 충북대학교 동물의학연구소 2011 Journal of Biomedical and Translational Research Vol.12 No.2
This study was conducted in order to evaluate the effect of sericin-calcium (SC) as therapy for ovariectomy-induced osteoporosis in rats. Three weeks after ovariectomy (OVX), Sprague-Dawley rats were divided randomly into three groups: sham-operated group (Sham), ovariectomized group, and SC-treatment group (OVX+SC). Rats in the OVX+SC group were given drinking water containing 0.07% SC for eight weeks. Bone breaking force, mineralization, and blood parameters related to bone metabolism were analyzed. In OVX animals, blood concentration of 17β-estradiol showed a significant decrease, while osteocalcin and type I collagen C-terminal telopeptides (CTx) showed an increase. Breaking force of femurs as well as bone mineral density (BMD), ash, calcium, and phosphorus in femurs showed a significant decrease following OVX. Treatment with SC (0.07% in drinking water) resulted not only in remarkable restoration of the decreased 17β-estradiol and increased osteocalcin and CTx concentrations, but also led to recovery of decreased femoral breaking force, BMD, ash, calcium, and phosphorus. It is suggested that SC effectively improves bone density by preventing bone turnover-mediated osteocalcin, CTx, and minerals, and that it could be a potential candidate for use in therapy or prevention of post-menopausal osteoporosis.
Primary Hepatosplenic Tuberculosis in an Immunocompetent Adult and Domestic Literature Review
Se Yoon Park,Eun Jung Lee1,Tae Hyong Kim,Jae Young Jang,Min Huok Jeon,Eun Ju Choo,So Young Jin 순천향대학교 순천향의학연구소 2012 Journal of Soonchunhyang Medical Science Vol.18 No.2
Hepatic or splenic involvement of tuberculosis without other disseminated lesions is a very uncommon form of extrapulmonary tuberculosis, especially in an immunocompetent adult. We report a case of a 25 year-old-man who developed primary hepatosplenic tuberculosis not associated with the lung or other distant organs. He was initially diagnosed with esophageal candidiasis in local clinic. A computed tomographic scan of the abdomen showed hepatosplenomegaly and multiple microabscesses in the spleen. Our initial diagnosis, based on the clinical feature and radiologic findings, was hepatosplenic candidiasis. However, histopathology of the liver specimens revealed chronic granuloma with central caseous necrosis, strongly suggestive of tuberculosis. Although rare, splenic tuberculosis should be considered in the differential diagnosis of splenic abscess, especially in countries where tuberculosis is endemic.