소음성 난청에서의 Mitochondrial DNA A3243G, A1555G, A7445G 돌연변이

홍영습,이명진,곽기영,황찬호,신동훈,곽종영,이용환,김종민,김준연,Hong Young-Seoub,Nishio Hisahide,Lee Myeong-Jin,Kwak Ki-Young,Hwang Chan-Ho,Shin Dong-Hoon,Kwak Jong-Young,Lee Yong-Hwan,Kim Jong-Min,Kim Joon-Youn 한국생명과학회 2004 생명과학회지 Vol.14 No.6

본 연구는 소음성 감각신경성난청 환자의 유전적 관련요인을 파악하고자 관련성이 의심되는 mitochondrial DNA의 돌연변이와 소음성 감각신경성난청과의 관련성을 조사하였다. 말초혈액 백혈구로부터 DNA를 추출한 후, mtDNA 3243, 1555, 7445부위의 $A{\rightarrow}G$ 돌연변이 유무를 관찰하기 위하여 mtDNA 3243, 1555, 7445부위 가 포함된 mtDNA fragment를 중합효소 연쇄반응으로 증폭하고 유전자 제한효소로 소화하여 전기영동하고 ethidium bromide 용액으로 염색하여 UV transilluminator에서 관찰하였다. 그리고, PCR 산물을 이용하여 DNA 염기서열을 분석하여 mtDNA 3243, 1555, 7445부 위에서의 염기서열 분석을 실시하여 mtDNA 3243, 1555, 7445부위 의 $A{\rightarrow}G$ 돌연변이를 관찰하였다 MtDNA A3243G, A1555G, A7445G의 돌연변이를 관찰한 결과 돌연변이 부위가 포함된 fragment가 소음성 감각신경성난청 환자군, 감각신경성난청 환자군, 대조군 모두에서 증폭됨을 관찰하였다. 또한 PCR 산물을 제한효소로 처 리 한 결과에서도 mtDNA에서 3243, 1555, 7445부위의 $A{\rightarrow}G$ 돌연변이가 일어나지 않았음을 알 수 있었다. PCR산물을 이용하여 DNA 염기서열을 분석하여 mtDNA 3243, 1555, 7445부위에서의 염기서열을 확인한 결과 이미 밝혀진 사람의 mtDNA 3243, 1555, 7445부 위의 염기서열과 동일한 염기서열임이 확인되었으므로 mtDNA 3243, 1555, 7445부위의 $A{\rightarrow}G$ 돌연변이가 일어나지 않았음을 확인하였다. 소음성 감각신경성난청과 mtDNA 3243, 1555, 7445부위의 $A{\rightarrow}G$ 돌연변이와는 관련이 없는 것으로 관찰되었다. Mitochondrial DNA mutations have been reported in recent years in association with sensorineural hering loss. The purpose of this study is to identify the association between the noise-induced sensorineural hearing loss and the A to G mutation at nucleotide 3243, 1555, 7445 of mitochondrial DNA. Study subjects were established by history and chart review, and audiological and clinical data were obtained. Blood was sampled from 214 normal controls, 102 noise-induced hearing loss, and 28 sensorineural hearing loss. The DNA of these individuals were extracted, and mitochondrial DNA fragments were analyzed by polymerase chain reaction. Subsequently, the coding sequence of mitochondrial DNA 3243, 1555, 7445 were sequenced, and compared to the normal sequence, and all sequence variations were analyzed by restriction enzymes. Mitochondrial DNA mutations $(3243A{\rightarrow}G,\;1555A{\rightarrow}4G,\;7445A{\rightarrow}G)$ were not detected by polymerase chain reactions in any patients with noise-induced hearing loss, sensorineural hearing loss, and normal controls. The DNA sequencing of PCR products did not revealed an A to G substitution at nucleotide 3243, 1555, 7445 of mitochondrial DNA. The noise-induced sensorineural hearing loss was not associated with mitochondrial DNA mutation $(3243A{\rightarrow}G,\;1555A{\rightarrow}4G,\;7445A{\rightarrow}G)$.

일부 우리나라 성인의 대사성증후군의 유병률과 허리둘레 예측치

홍영습,정백근,박용우,박종태,정갑열,김준연,김병권,Hong, Young-Seoub,Jeong, Baek-Geun,Park, Yong-Woo,Park, Jong-Tae,Jung, Kap-Yeol,Kim, Joon-Youn,Kim, Byoung-Gwon 대한예방의학회 2004 예방의학회지 Vol.37 No.1

Objectives : The purpose of this study was to estimate the prevalence of metabolic syndrome, as defined by the ATP III report, in some Korean adults and use the Asian-Pacific proposed waist circumference to investigate waist circumference in some Korean adults using ROC curves. Methods : Study subjects were seventy-five thousands and ninety one persons(47,979 men and 27,111 women) who were selected among the patients who visited hospital for health evaluation from January 2000 to December 2001. All subjects were measured by height, weight, waist and hip circumferences, blood pressure and blood chemistry(lipid profile). Results : The mean age was $41.6{\pm}8.5$ years in men, $41.1{\pm}10.4$ years in women(p<0.05). Body mass index was in the normal range in 35.3% of men, and 55.9% of women. In both men and women, blood pressure, blood sugar, total cholesterol and triglyceride were positively correlated with BMI. waist circumference, and Broca's index(p<0.01). However HDL. choloesterol was correlated negatively (p< 0.01). Using ROC curve, the calculated waist circumferences were 84 cm in men(sensitivity 61.4% and specificity 64.1%) and 74 cm in women(sensitivity 65.0% and specificity 73.2%). The age adjusted prevalences of the metabolic syndrome as defined by NCEP ATP III were different for men(6.4%) and women(14.6%). The prevalence increased from 1.2% among participants aged 20 through 29years to 15.0% among participants aged over 60years in men(p<0.05) and from 1.6% to 27.4% respectively, in women. The age adjusted prevalences, as defined by using the waist circumference that was recommended by WHO's regional office for the western Pacific, were 10.6% in men and 18.5% in women. The age adjusted prevalences, as defined by using the waist circumference that was calculated by the ROC curves, were 17.1% in men and 22.4% in women. And All prevalences were increased following increased BMI and Broca's index. Conculsions : The prevalence of metabolic syndrome in some Korean adults was lower than that in western adults. Nevertheless because waist circumference was differed among race and region, application of the same criteria was not proper. Morcover, a higher awareness was required in women, because the prevalence of metabolic syndrome was rapidly increased with increment of age.

용접흄 폭로 근로자들의 폐기능에 관한 연구

홍영습,김병권,김성률,담도온,김정만,정갑열,김준연,Hong, Young-Seoub,Kim, Byoung-Gwon,Kim, Sung-Ryul,Dam, Do-Won,Kim, Jung-Man,Jung, Kap-Yull,Kim, Joon-Youn 대한예방의학회 1995 예방의학회지 Vol.28 No.1

In order to study the effect of welding fume exposure upon the pulmonary function test, we examined 131 shielded arc welding workers, and 152 $CO_2$ arc welding workers as cases and 177 control workers for their general characteristics, and forced vital capacity (FVC), forced expiratory volume in one second $(FEV_{1.0})$, forced expiratory volume in one second as a percent of FVC $(FEV_{1.0}%)$, and maximal mid-expiratory flow (MMF) were obtained from the spirogram. In shielded arc welding group and $CO_2$ arc welding group, FVC, $FEV_{1.0},\;FEV_{1.0}%$, and MMF were significantly decreased than control group, especially marked in the MMF finding. The distribution of workers below normal range was as follows. in the shielded arc welding group, 2 workers(1.5%) for FVC, 17 workers(13.0%) for $FEV_{1.0}$, 5 workers(3.8%) for $FEV_{1.0}%$, 28 workers(21.4%) for MMF, and in the $CO_2$ arc welding group, 3 workers(2.0%) for FVC, 25 workers(16.4%) for $FEV_{1.0}$, 8 workers(5.3%) for $FEV_{1.0}%$, and 37 workers(24.3%) for MMF, and significant increase by exposure duration was found in MMF. The distribution of workers who had ventilation impairment was as follows: 5 workers(3.8%) for obstructive type, 2 workers(1.5%) for restrictive type in the shielded arc welding group, and 7 workers(4.6%) for obstructive type, 2 workers(1.3%) for restrictive type, and 1 worker(0.6%) was combined type of the $CO_2$ arc welding group. In the respect of these results, the significant pulmonary function and ventilatory impairment were observed in welding fume exposed workers who had not abnormal finding in chest X-ray, and MMF considered as the most sensitive pulmonary function index by welding fume exposure. Therefore even if it is hard to doing pulmonary function test in the first health examination of workers according to the Industrial Safety Health Act in the welding fume exposure workers, it is desirable to consider doing PFT. Also evaluating the ventilation impairment, it is necessary, to observe the change of MMF that marker of effort-independent portion.

Biological monitoring of residents in abandoned metal mine areas

Young-Seoub Hong(홍영습),Chang-Hun You(유창훈),Geong-Yeon Kim(김경연),Byoung-Gwon Kim(김병권),Yu-Mi Kim(김유미) 환경독성보건학회 2012 한국독성학회 심포지움 및 학술발표회 Vol.2012 No.10

해안지역 주민을 중심으로 한 생체 수은 노출지표와 관련 요인

홍영습(Young-Seoub Hong) 한국환경독성학회 2010 한국독성학회 심포지움 및 학술발표회 Vol.2010 No.11

개인 소음폭로량과 청력손실에 관한 추적조사

김원술,홍영습,김양석,이상주,박경일,정갑열,김준연,Kim, Won-Sool,Hong, Young-Seoub,Kim, Yang-Seak,Lee, Sang-Ju,Park, Kyung-Il,Jung, Kap-Yull,Kim, Joon-Youn 대한예방의학회 1994 Journal of Preventive Medicine and Public Health Vol.27 No.2

For the purpose of presenting the basic data for the establishment of control measures on the long-term noise exposed workers, this study was carried out on the relationship between personal noise exposed dose and hearing loss on the 67 male workers whose hearing threshold had exceeded 40 dB in 4,000 Hz, from 1990 to 1992. Conclusively, the level of hearing loss was significantly related to personal noise exposed dose in follow-up period. We considered that personal noise exposed dose which was measured by the personal noise dosemeter was more efficient rather than the noise level of workplace for the evaluating the long-term change of hearing acuity. And although in the case of not-diagnosed as noise induced hearing loss. it was suspected that the active control programs such as improvement of noisy environment or early transfer to proper workplace were needed on the workers who exposed with over 90 dB in personal noise exposed dose.

조선수리업종 석면노출 근로자들의 흉부방사선상 석면관련 폐질환 소견의 발생양상

이현재,홍영습,손지언,이영일,김상훈,임형준,김정만,김준연,Lee Hyun Jae,Hong Young Seoub,Son Ji Eun,Lee Young Ill,Kim Sang Hoon,Im Hyoung June,Kim Jung Man,Kim Joon Youn 한국생명과학회 2006 생명과학회지 Vol.16 No.1

모 조선수리업에 근무하는 1,086명 중 석면에 노출되는 작업공정에 10년 이상 근무한 근로자 118명을 대상으로 단면조사연구를 수행하였다. 연구대상자들에 대해 흥부방사선검사, 폐기능검사와 미국의 산업안전보건청 석면표준, 의학적 감시 프로그램(OSHA asbestos standard, medical surveillance program)에 따라 국내 실정에 맞게 일부 편집한 설문조사를 시행하였고 아울러 이들의 작업장에 대한 작업환경측정 자료도 분석하였다. 흉부방사선검사상 석면관련 폐질환 소견의 유병율은 118명의 근로자중 16명으로 $13.6\%$였다. 흉부방사선검사상 정상군에 비해 석면관련 폐질환 유소견군에서 유의한 요인들은 폐기능검사상 이상소견, 기침, 가래, 호흡기 질환의 과거력, 근무력이었다. 본 연구 결과를 통해 볼 때 폐기능검사 소견상 이상소견, 기침과 가래의 임상증상을 호소하거나 호흡기질환의 과거력, 20년 이상의 근무력이 있는 근로자에 대해서는 석면관련 폐질환의 엄격한 관리가 필요할 것으로 생각된다. 그리고, 본 연구에서 관련성 여부를 완전히 배제할 수 없었던 요인들에 대해서는 향후 광범위한 전향적 연구를 통하여 연관성을 규명하여 석면노출 사업장의 의학적 감시 프로그램에 적극 활용되기를 기대한다. There was cross-sectional study on investigating the factors related asbestos-related disease on chest radiograph of workers exposed to asbestos in ship repair. According to Occupational Safety & Health Administration asbestos standard, medical surveillance, chest radiologic study, pulmonary function test and medical questionnaire are performed in 118 subjects exposed to asbestos for 10 years or more in ship repair. The sixteen out of 118 subjects $(13.6\%)$ were observed asbestos-related disease finding on chest radiography. Significant factors related to those finding on chest radiography were abnormal pulmonary function test, cough, sputum, past history of respiratory disease, work duration. Workers with Significant factors related asbestos-related disease finding on chest radiography should be managed on a strict program. Further, factors unrelated with asbestos-related disease finding on this study should be evaluated prospectively for medical surveillance program of workers exposed to asbestos.

만성 연중독자에서 발생한 신장해

김병권,김성률,홍영습,나서희,김정만,정갑열,김준연,Kim, Byoung-Gwon,Kim, Sung-Ryul,Hong, Young-Seoub,Rha, Seo-Hee,Kim, Jung-Man,Jung, Kap-Yull,Kim, Joon-Youn 대한예방의학회 1996 Journal of Preventive Medicine and Public Health Vol.29 No.1

We experienced a case of nephropathy in chronic lead poisoning. The patient was 43-year-old male who has been working in secondary lead smelting plant for 14 years. On admission, blood pressure was 160/90 mmHg and the others were non-specific. In past history, he received chelating agent administration for lead poisoning irregularly and medicated for gout, and the blood lead concentration was $180.0{\mu}g/dl$ on 2 months before admission. Smoking habit has been 1 pack per day for 15 years and drinking habit has been 1 bottle of Soju per day but less flow. In liver function test, AST/ALT were 27/28 IU/l and $\gamma-GT$ was 456 IU/l. In blood test, Hb : 11.5 g/dl, Hct : 34.0% and basophilic stipplings were found in peripheral blood smear. Chest PA was normal and abdominal ultrasonographic finding was non-specific except fatty liver. In the test of lead exposure indices, $PbB:83.0{\mu}g/dl,\;PbU:28.3{\mu}g/l$, and blood ZPP was $300.0{\mu}g/dl$. And in renal function test, BUN : 31.4 mg/dl, blood creatinine : 2.7mg/dl, blood uric acid. 9.1 mg/dl, urinary albumin : 100.0 mg/g creatinine, urinary $\alpha_1-microglobulin$ : 120.5 mg/g creatinine, urinary $\beta_2-microglobulin$ : $183.8{\mu}g/g$ creatinine, and 24 hours urinary creatinine clearance was 31.9 ml/min. The ultrasonoguided renal biopsy showed the global sclerosis of glomerulus, moderate atrophy and loss of tubule, and interstitial fibrosis in light microscopy. There were diffuse losses of brush border of proximal tubule in electronmicroscopy.

한국인에서 peroxisome proliferator-activated receptor alpha Leu162Val 유전자 다형성과 대사증후군간의 관련성

신승철,송혜순,홍영습,곽종영,유병철,이용환,Shin Soung-Cheal,Song Hye-Soon,Hong Young-Seoub,Kwak Jong-Young,Yoo Byung-Chul,Lee Yong-Hwan 한국생명과학회 2006 생명과학회지 Vol.16 No.2

Peroxisome proliferator-activated receptors alpha (PPAR $\alpha$)는 지질대사와 관련하여 대사증후군 발생과 관련이 있을 수 있는 강력한 잠재 유전자로 고려되고 있으므로 한국인에 있어서 PPAR$\alpha$ L162V 유전자 다형성과 대사증후군과의 연관성을 확인하고자 고신대학교 복음병원에서 2004년 12윌에서 2005년 7월 사이에 건강진단을 받았던 수진자 542명(대사 증후군 : 262명, 정상인 : 280명)을 대상으로 신장, 체증, 체질량지수, 허리둘레와 수축기와 이완기 혈압, 공복 혈당, 총콜레스테롤, HDL 콜레스테롤, LDL 콜레스테롤과 중성지방 수치를 측정하였으며, 대사증후군의 정의는 혈압, 공복 혈당, HDL 콜레스테롤, 중성지방은 NCEP ATP III의 기준을 적용하였고, 허리둘레는 WHO 아시아-서태평양 기준을 적용하였다. PCR-ASO (polymerase chain reaction allele-specific oligonucleotide) 방법에 의해 대상자들의 PPAR$\alpha$ L162V 유전자 다형성을 확인하였다. 연구결과 PPAR$\alpha$ 484번 염기서열의 $C{\rightarrow}G$ 돌연변이가 나타난 사람은 조사대상자 542명 가운데 1명(0.2%) 이었다. 한국인에서는 PPAR$\alpha$ L162V 유전자 다형성이 거의 일어나지 않았으며, 이의 확인을 위하여 더욱 많은 사람을 대상으로 연구가 진행되어야 할 필요가 있을 것으로 생각된다. Peroxisome proliferator activated receptor (PPAR)-$\alpha$ of three PPAR subtypes ($-\alpha,\;-\beta/-\gamma,\;-\delta$), which are members of the nuclear hormone receptor superfamily of ligand-activated transcription factors, plays a key role in lipoprotein and glucose homeostasis. A variation in the PPAR-a gene expression has been suggested to influence the development of metabolic syndrome through alterations in lipid concentrations. The aim of our study was to investigate the association between the PPAR-a and metabolic syndrome among South Korean. A total of 542 health screen examinees were enrolled in this study who were examined in Kosin University Gospel Hospital from December, 2004 to July, 2005. The height, weight, waist circumference, and systolic and diastolic blood pressure of the subjects were examined and fasting blood glucose, total cholesterol, HDL cholesterol, LDL cholesterol, triglyceride were measured by-sampling in venous blood. The metabolic syndrome was defined as the presence of three or more of the following : waist circumference men ${\geq}90cm$, women ${\geq}80cm$, blood pressure ${\geq}130/85mmHg$, fasting glucose ${\geq}110mg/dL$, HDL cholesterol men <40 mg/dL, women <50 mg/dL, triglyceride ${\geq}150mg/dL$. The blood pressure, fasting glucose, HDL cholesterol, triglyceride were evaluated by using the criteria of NECP ATP III and waist circumference was assessed by using the criteria of WHO Asia-Western Pacific. And the author compared the frequency of the PPAR-$\alpha$ mutation of L162V ($C{\rightarrow}G$ variant in exon 5) in a sample of 542 subjects with and without the metabolic syndrome by polymerase chain reaction allele-specific oligonucleotide (PCR-ASO) method. One (0.2%) hetero-isotype among high risk of metabolic syndrome was identified. The values of waist circumference, body mass index and low density lipoprotein cholesterol of the mutant were 100 cm, 28.6 $kg/m^2$ and 120 mg/dL, respectively. Although the author failed to see significant association between the presence of the PPAR-$\alpha$ L162V polymorphism and metabolic syndrome, one PPAR-$\alpha$ L162V polymorphism in metabolic syndrome patients was found.

만성 연중독자에서의 다발성 뇌석회화 병변

김성률,김병권,홍영습,담도온,최순섭,정갑열,김준연,Kim, Sung-Ryul,Kim, Byoung-Gwon,Hong, Young-Seoub,Dam, Do-Won,Choi, Soon-Seob,Jung, Kap-Yull,Kim, Joon-Youn 대한예방의학회 1995 Journal of Preventive Medicine and Public Health Vol.28 No.2

We experienced a case of occupational lead poisoning employed in a secondary lead smelting plant for 12 years. The patient was 39-year-old male and had been felt dizziness, recent memory impairment and intermittent severe abdominal pain for 2 years. On admission, blood lead level was $92.9{\mu}g/dl$, urinary lead level was $19.9{\mu}g/l$ and zinc protoporphyrin level was $226.0{\mu}g/dl$. On the blood test, hemoglobin was 10.6g/dl and showed normocytic normochromic anemia. There were no abnormal findings in the biochemical and hormonal tests. Decrease of I.Q. and use of words in speaking were found in the psychiatric and psychologic examinations. We observed the finding of motor polyneuropathy in the nerve conduction velocity test. Computed tomographic finding showed calcification lesions in the basal ganglia, dentate nuclei, caudate nuclei, and especially characteristic multiple calcifications were located in the subcortical white matter.