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N-Acetyltransferase 2와 glutathione S-transferase mu 및 theta 다형성이 방광암 발생에 미치는 영향에 대한 환자-대조군 연구
김헌,김원재,이형래,이무송,김철환,김로사,남홍매,Kim, Heon,Kim, Wun-Jae,Lee, Hyung-Lae,Lee, Moo-Song,Kim, Cheol-Hwan,Kim, Ro-Sa,Nan, Hong-Mei 대한예방의학회 1998 Journal of Preventive Medicine and Public Health Vol.31 No.2
1996년 3월부터 1996년 12월까지 충북대학교병원 비뇨기과에 입원하여 치료를 받은 방광암 환자 67명과 암 아닌 다른 질환을 가진 대조군 67명을 대상으로 흡연, 음주, 직업력 등을 포함한 생활 습관과 NAT2와 GSTM1, 그리고 GSTT1 유전자 다형성 양상을 조사하여 다음과 같은 결론을 얻었다. 1. NAT2 다형성 분포는, 환자군이 slow, intermediate, rapid acetylator가 각각 3.0%, 38.8%, 58.2%, 그리고 대조군이 7.6%, 40.9%, 51.5%였으며, NAT2의 활성과 방광암 위험도 사이의 관련성은 유의하지 않았다($\chi^2_{trend}=1.18$, P-value>0.05). 2. GSTM1 결손은 환자군의 68.7%, 대조군의 49.3%에서 확인되었으며, OR(95% 신뢰구간)이 2.23(1.12-4.56)으로, 방광암 발생의 위험인자로 나타났다. 3. GSTT1은 환자군의 26.9%,그리고 대조군의 43.3%에서 결손이 있는 것으로 나타나서, GSTT1 결손은 방광암에 대하여 보호효과가 있는 것으로 관찰되었다(OR: 0.48, 95% 신뢰구간: 0.23-0.99). 4. 흡연 여부는 방광암의 발생에 유의한 영향을 미치지 않는 것으로 나타났는데(OR=1.85, 95% CI: 0.85-4.03), 이는 환자군과 대조군의 흡연률이 모두 높기 때문으로 판단된다. 5. 그 외, 음주력, 직업력, 수혈 여부, 그리고 피임시술의 과거력 등의 요인들은 방광암 발생과 유의한 관련성이 없는 것으로 나타났다. Activities of enzymes involved in the metabolism of various carcinogenic xenobiotics is one of the most important host factors for cancer occurrence. N-acetyltransferase (NAT) and glutathione S-transferases (GST) are enzymes which .educe the toxicity of activated carcinogenic metabolites. Slow N-acetylation and lack of GST mu (GSTMI) were reported as risk factors of bladder cancer. GST theta (GSTT1), which is another type of GST, was reported to be deleted at higher proportion among Koreans. Since cause of bladder cancer is not fully explained by single risk factor, many kinds of enzymes would be involved in the metabolism of carcinogens excreted in urine. This study was performed to investigate whether the polymorphisms of NAT2, GSTM1 and GSTT1 are risk factors of bladder cancer and to evaluate the effects of their interaction on bladder cancer development. Sixty-seven bladder cancer and 67 age- and sex-matched non-cancer patients hospitalized in Chungbuk National University Hospital from March to December 1996, are the subjects of this case-control study. Questionnaire interview was done and the genotypes of NAT2, GSTM1 and GSTT1 were identified using PCR methods with DNA extracted from venous blood. The effects of the polymorphism of NAT2 and GSTM1 and their interaction on bladder cancer were statistically tested after controlling the other risk factors. The frequencies of slow, intermediate, and rapid acetylators were 3.0%, 38.8%, and 58.2% to. the cases, and 7.6%, 40.9%, and 51.5% for the controls, respectively. The risk of bladder cancer was not associated with the increase of NAT2 activity($\chi^2_{trend}=1.18$, P-value>0.05). GSTM1 was deleted in 68.7% of the cases and 49.3% of the controls ($\chi^2=5.21$, P-value<0.05), and the odds ratio (95% CI) was 2.23 (1.12 - 4.56). GSTT1 deletion, the .ate of which were 26.9% for the bladder cancer patients and 43.3% for the controls, was a significant protective factor against bladder cancer. Smoking history turned out to be insignificant as a risk factor of bladder cancer (OR=1.85, 95% CI: 0.85 - 4.03), and occupation could not be tested because of the extremely small number of occupational history related to the increase of bladder cancer. In multiple logistic analysis controlling the effects of other risk factors, GSTM1 deletion was the only significant risk factor for bladder cancer (OR: 2.56, 95% CI: 1.22-5.36, P-value<0.05), but slow acetylation and GSTT1 deletion were not. These results suggest that GSTM1 deletion may be a significant risk factor of bladder cancer. Since there have been much debates on causal relationship between slow acetylation and GSTT1 deletion, and bladder cancer, further studies are needed.
세침흡인 세포검사로 진단된 폐에 전이한 정상피종 - 1예 보고 -
정화숙,이건국,김원재,엄재호,송형근,Jeong, Hwa-Sook,Lee, Geon-Kook,Kim, Wun-Jae,Earm, Jae-Ho,Song, Hyung-Geun 대한세포병리학회 1996 대한세포병리학회지 Vol.7 No.1
Fine needle aspiration cytology of a pulmonary mass was performed on a 51-year-old man who had a left testicular mass. Cytologic features were composed of a homogeneous population of malignant cells associated with a background of foamy and lacelike material. The cellular features were characterized by monomorphous cell proliferation of relatively regular large cells, generally isolated or grouped. Occasionally, fine blanching stroma with large tumor cells and scanty lymphocytes were noted. The tumor cells had a round, regular nucleus, prominent round nucleoli, and a thin rim of cytoplasm containing large vacuoles or lacunae filled with glycogen. The fine needle aspiration cytologic diagnosis was highly consistent with metastatic seminoma from testis and less likely primary or other metastatic carcinoma. The diagnosis of resected testicular mass was classic seminoma. Despite the fact that cytopathologists were not familial with diagnosis of seminoma due to clinician's lack of interest in fine needle aspiration cytology of germ cell tumors including seminoma, it appears that a diagnosis of this tumor should not be problematic in cytologic material if specific histologic criteria are applied.
이승직,김경아,이태수,김원재,차은종,Lee, Seung-Jik,Kim, Kyung-Ah,Lee, Tae-Soo,Kim, Wun-Jae,Cha, Eun-Jong 대한의용생체공학회 2006 의공학회지 Vol.27 No.4
Devices in current market to perform electrical stimulation therapy of the urinary incontinence frequent in aging women are very much impractical to us ε due to the wired configuration. The present study implemented new wireless device to enhance self as well as in-hospital therapy with the easiest and the most convenient application. The therapy system consisted of two modules, called 'master' and 'slave', communicating with each other by the wireless Bluetooth protocol. The patient controls therapy processes on the master module in hand, transmitting the required informations to operate the slave module placed within her pants with the viginal electrode connected, delivering appropriate electrical stimulation. Wireless communication enabled self therapy with clothes on, leading to a great convenience for the patient. The stimulation output signal was comparable to commercialized products in both waveform and stimulation capacity.
전립선암으로 근치적 전립선적출술을 받은 한국인의 특징과 예후
김대성(Dae Sung Kim),변석수(Seok-Soo Byun),이상은(Sang Eun Lee),이은식(Eunsik Lee),최한용(Han Yong Choi),정병하(Byung Ha Chung),최영득(Young Deuk Choi),안한종(Hanjong Ahn),황태곤(Tae-Kon Hwang),이강현(Kang Hyun Lee),김원재(Wun-Jae Ki 대한비뇨기종양학회 2010 대한비뇨기종양학회지 Vol.8 No.1
Purpose: There is a great difference between the prostate cancer in Asian men compared to Western men. We evaluated the clinicopathologic features and prognosis of Korean men with prostate cancer who underwent radical prostatectomy. Materials and Methods: We reviewed retrospectively the clinicopathologic parameters including age, preoperative PSA, stage, Gleason score and so on in 2,783 men underwent radical prostatectomy in 14 institutions. Of 2,783 men, patients with prior radiotherapy, neoadjuvant treatment, suspicious lymph node invasion, distant metastasis and treatment failure were excluded. We evaluated recent change in clinical parameters. 2,081 men with localized prostate cancer were analyzed for the biochemical recurrence-free survival rates. Results: Proportion of patients with serum PSA of less than 10ng/ml were 38.9% in 1999. However the proportion were 68.6% in 2008. The 5-year overall biochemical recurrence-free survival rate (BCR-FS) was 48%. The 5-year BCR-FS according to the preoperative serum PSA, biopsy Gleason score, pathologic T stage, margin positivity had the lower level than Western series. Conclusions: The proportion of patients with serum PSA <10ng/ml were increased in Korean men with prostate cancer. However, the BCR-FS had the lower level than Western men. Therefore, we must consider that the prostate cancer in Korean men have a unfavorable prognosis compared with Western men.
김원태(Won Tae Kim),김원재(Wun-Jae Kim) 대한비뇨기종양학회 2013 대한비뇨기종양학회지 Vol.11 No.2
Prostate cancer is the most common cancer in men in western countries and the leading cause of death. The incidence of prostate cancer increased in low risk East-Asia, and prostate cancer has been increased rapidly in Korea. There have been many clinical studies about incidence, natural history, treatments, perioperative complications, biochemical recurrence, and metastasis of prostate cancer in Korea, but several basic studies about prostate cancer were conducted by urologist. Recently, urologists have a growing interest about basic research of prostate cancer due to different reasons. Herein, we review the current update in basic research in Korea: prostate cancer during 5 years.
방광암에서 Genome-wide Association Studies (GWAS)를 활용한 중개연구
윤석중(Seok Joong Yun),김원재(Wun-Jae Kim) 대한비뇨기종양학회 2012 대한비뇨기종양학회지 Vol.10 No.3
The advent of the genome era after the completion of the Human Genome Project has resulted in intensive efforts to identify all genetic changes that modify human health and disease, including cancer. Genome-wide association studies (GWAS) use high-throughput genotyping technologies to assay hundreds of thousands of single-nucleotide polymorphisms (SNPs) and relate them to clinical conditions. Since 2008, several GWAS have been published for identifying genetic susceptibility loci for bladder cancer. Herein, we review the GWAS data of bladder cancer and summarize the results. Although there is a criticism about the relevance of the GWAS results, it could facilitate the development of a comprehensive risk prediction model which integrates genetic, environment, and person risk factors to benefit disease diagnosis, prevention, and treatment for bladder cancer.
전립선암에서 암 발생 및 진행에 관여하는 MicroRNAs의 역할에 대한 고찰
김원태(Won Tae Kim),윤석중(Seok Joong Yun),김원재(Wun-Jae Kim) 대한비뇨기종양학회 2018 대한비뇨기종양학회지 Vol.16 No.1
MicroRNAs (miRNAs) are small noncoding RNAs that target mRNA to reduce gene and protein expression by repressing their targets’ translation or inducing mRNA degradation. They play fundamental roles in various cancers, including prostate cancer. Each single miRNA may regulate hundreds of genes, and a certain gene may serve as a target by multiple miRNAs. Hence, miRNAs modulate, cell cycle, apoptosis, epithelial-mesenchymal transition (EMT), and metastasis, etc. In this review, we will summarize the several miRNAs that may function as oncogenes and tumor suppressors. And we will describe the each miRNAs associated with cell cycle, apoptosis, EMT, and metastasis in prostate cancer.