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뇌하수체 - 갑상선 축의 평가에 있어 면역방사계수측정법에 의한 혈청 TSH 의 기저치 측정의 의의
서교일(Kyo Il Suh),조보연(Bo Youn Cho),이홍규(Hong Kyu Lee),고창순(Chang Soon Koh),민헌기(Hun Ki Min),이문호(Mun Ho Lee) 대한내과학회 1988 대한내과학회지 Vol.34 No.6
N/A To evaluate whether thyrotropin(TSH) values measured by sensitive immunoradiometric assay(IRMA) can be used as an indicator of pituitary-thyroid status, serum triiodothyronine(T3) and thyroxine(T4) as well as TSH were measured before and after thyrotropinreleasing hormone(TRH) stimulation in 30 normal subjects, 17 patients with hyperthyroidism and 67 patients receiving chronic oral T, therapy for thyroid cancer. IRMA of TSH involves use of two monoclonal antibodies. The detection limit of the assay was 0.04 mU/L and intrassay and interassay variation was less than 5% in TSH concentration of 2.4 and 31.6 mU/L, Over the undetectable to nomal TSH range, an excellent correlation was observed between basal TSH levels and TRH stimulated TSH increment was observed between basal TSH levels and TRH stimulated TSH increment (r=0.94). When the subjects were grouped by their resting free T. index (FT,I), the curve was found to be steeper in high FT4I group (FT4I>9.4) than normal FT4I group (FT4I<9.4) (y=0.82+113x vs y=0.78+1.28x). In 67 patients with thyroid cancer on suppression therapy, 43 had both undetectable basal TSH levels and no TSH response to TRH stimulation while 7 patients had undetectable basal TSH levels but preserved TSH response to TR~H. Measurable TSH response to TRH were found in all patients with detectable basal TSH. Therefore, when basal TSH value of 0.04mU/L was used as a criterion, sensitivity and specificity for prediciting pituitary suppression were 84% and 100% respectively while those were 78% and 72% in case FT4I of 12 was used as a criterion. These findings suggest that the TSH values measured by sensitive IRMA represents status of pitutitarythyroid axis and can be used as a sensitive indicator of pituitary suppression.
유희용 ( Hee Yong Yoo ),정철호 ( Chul Ho Chung ),노미오 ( Mi Oh Roh ),박형규 ( Hyeong Kyu Park ),변동원 ( Dong Won Byon ),서교일 ( Kyo Il Suh ),유명희 ( Myung Hi Yoo ) 대한내과학회 2009 대한내과학회지 Vol.77 No.6
Thyroid tuberculosis is rare, and primary tuberculosis is extremely rare. In most cases, thyroid tuberculosis presents as a thyroid nodule, thyroiditis, thyroid abscess, or thyroid cancer, and is often diagnosed after thyroidectomy. We experienced a case of thyroid tuberculosis that presented as a palpable thyroid nodule in a 32-year-old female patient. The patient had been previously diagnosed with cervical tuberculous lymphadenitis and had been treated successfully 6 years ago. Fine needle aspiration of the thyroid gland showed a small number of neutrophils and macrophages in a necrotic background, and many acid-fast bacilli were found with AFB staining. The patient began anti-tuberculosis therapy as an outpatient and is currently being followed regularly. Here, we report a case of thyroid tuberculosis diagnosed after the apparent cure of cervical lymph node tuberculosis. Additionally, a review of the literature is included. (Korean J Med 77:771-774, 2009)
시스템 다이내믹스를 이용한 농업용수 재이용시스템 경제성 분석
정한석,서교,장태일,성충현,김학관,박승우,Jeong, Han Seok,Suh, Kyo,Jang, Tae Il,Seong, Choung Hyun,Kim, Hak Kwan,Park, Seung Woo 한국농공학회 2013 한국농공학회논문집 Vol.55 No.2
Many studies have reported additional treatment is needed to use wastewater for agricultural purpose. Economic considerations should be taken into account to establish infrastructure for agricultural reuse because of a large amount of water use in irrigation and relatively low water quality requirement. The objective of this study was to conduct economic analysis of wastewater reclamation and reuse systems for agriculture. A system dynamics approach considering complexity and dynamics in the wastewater reuse systems was used for the economic analysis, which are related with social, environmental, and economic problems. Sensitivity and benefit cost analysis for wastewater reuse systems was conducted through the established economic assessment model. The result of sensitivity analysis showed that water resources development and installation cost were the most sensitive for total benefits and costs, respectively. The scenario-based test of the organized economic assessment model shows marginal cost ranges and enables decision-makers to decide reasonable cost for the wastewater reuse systems for agriculture.
High Performance Liquid Chromatography를 이용한 Hemoglobin A1C 측정
변동원,서교일,유명희,김극배 순천향의학연구소 1995 Journal of Soonchunhyang Medical Science Vol.1 No.2
Hemoglobin AIc(HbAlc) has been known to be an index of long-term glycemic control (6-8weeks), and offers several practical advantages for screening of diabetes mellitus and evaluation of effects of treatment. Authors introduced to measure and investigate HbAlc levels by high performance liquid chromatoraphy (HPLC ; LDC Milton Roy, USA), with cation exchange column, Mono S HR 5/5 (Pharmacia). The results were as follows; 1. The mean HbAlc level in normal adult control group (n=50) was 4.13±0.25% (Mean±S.D). 2. Within-run precisions of HbAlc levels measured by HPLC were 4.39±0.01% (Mean±S.D.), 1.41(C.V.) in normal control, and 8.95±0.02% (Mean±S.D.), 1.65(C.V.) in intermittently treated diabetic patients, and 11.02±0.01% (Mean±S.D.) 2.93(C.V.) in untreated diabetic patients. 3. Between-run precision of HbAlc levels measured by HPLC were 4.35±0.01% (Mean±S.D.), 2.76(C.V.) in normal control, and 8.98±0.01% (Mean±S.D.), 1.22(C.V.) in intermittently treated diabetic patients, and 10.95±0.15% (Mean±S.D.), 3.51(C.V.) in untreated patients. 4. The peak level of HbAlc was obtained in about 9 minutes and the whole program could be completed within 17 minutes. 5. Blood specimens could be stored for as long as 8 days at 4℃ without changes of HbAlc levels. These results suggest that the measurement of HbAlc by HPLC using cation exchange column is so accurate, simple and rapid that the clinical use is more wider.
남일송,윤여일,김선규,김용현,이주영,목지오,윤석기,김철희,김영선,변동원,서교일,유명희 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.2
Background: Most cases of Graves' disease have been treated by antithyroid drugs in Korea. The major drawbacks of antithyroid drugs are the relative high rate of relapse and the inconvinience of long term therapy. Measurement of TBII and TRH stimulation test have been considered as the most reliable tests predicting relapse, but the predictive power is not high enough to use in clinical situation. This study was performed to find good prognostic indicators in Graves' disease patients after the discontinuation of antithyroid drug therapy. Subjects and methods : We restrospectively evaluated 96 patients with Graves' disease who showed normal TRH test at the end of antithyroid drug therapy and were followed for more than one year. Serum T3, T4, T3/T4 ratio, TBII, Anti-TPO Ab and TGAb levels were measured at the time of diagnosis and at the end of therapy. Two to three months after withdrawal of antithyroid medication, serum TSH and free T3 responses to TRH were examined. These parameters were compared between the relapse group and the remission group. Results : Among the 96 patients, 22 patients(22.9%) relapsed(Group Ⅱ) and 74 patients(77.1%) remained in remmision(Group Ⅰ). No significant difference was observed between the relapse and the remission group in clinical parameters, serum T3, T4, TSH, T3/T4 ratio, TBⅡ and Anti-TPO Ab determined before and after treatment. Serum TSH and free T3 levels measured after TRH stimulation were also similar in both groups. Serum TGAb levels determined at the end of treatment were significantly higher in the remission group(p<0.05). Relapse following the discontinuation of therapy occured within 24 months in 72.7% of the relapsed cases. After 24 months, relapse rate was reduced significantly. Conclusion : These results suggest that high serum TGAb levels could be a favorable prognostic indicator for the long term remission of Graves' disease treated with antithyroid drugs, and may suggest that Hashimoto's thyroiditis is combined with Graves' disease in those patients.
폐경기전후 한국 여성의 비타민 - D 수용체 유전자의 Restriction Fragment Length Polymorphisms 과 골밀도 및 골표지자와의 관계에 대한 고찰
김극배,한인권,서교일,변동원,김상우,유명희,문인걸 대한내분비학회 1995 Endocrinology and metabolism Vol.10 No.3
Osteoporosis is now a major health problem because of the increasing elderly population and related osteoporosis fractures. Recently, it has been suggested that lower bone mass with/and high bone turnover rate is considered to be important in the developing of osteoporosis, and so there has been many efforts to identify the risk factors which is considered to cause lower bone mass and high bone turnover. Osteocalcin, the most abundant noncollagenous protein in bone, is a marker of bone turnover and its synthesis is induced by calcitriol(the active form of vitamine-D) through the vitamine-D receptor(VDR) and a specific vitamine D-responsive element in the osteocalcin gene promoter. Serum concentrations of osteocalcin are under the strong genetic influences and may reflect allelic variation in VDR gene. Therefore, the present study were designed to find the relationships among the polymorphisms of Vitamine-D receptor gene, bone mineral density and bone markers. We analysed the restriction fragment length polymorphisms of VDR gene with Bsm I endonuclease enzyme in relation to bone mineral density by using DEXA(dual energy X-ray absorptiometry, QDR-2000) and bone markers, especially serum osteocalcin concentrations in 356 pre- and postmenopausal Korean women. The frequence of RFLPs of VDR gene is 3.3% in BB type, 10.1% in Bb type, 86.6% in bb type. The concentrations of osteocalcin, alkaline phosphatase, procollagen-C and urinary deoxypyridinoline/creatinine were found to be higher in postmenopausal than premenopausal women and the levels of BMD were lower in postmenopausal than premenopausal women. The BB type, which is known to have a strong genetic determinant, is less frequently encountered in Korean women and does not correlate with levels of bone markers and bone mineral density. Even though the number of women with BB type is small, we noted the mean serum level of each bone marker was greater in postmenopausal women with BB type than in premenopausal women with the same genotype. In conclusion, this may suggest a partial agreement of our data with that of Australlian group and that we have to try to find out another genotype specifically related with lower bone density in Korean women(J Kor Soc Endocrinol 10: 249-261, 1995)