정상 임신에서 임신주기에 따른 갑상선기능의 변화

김원배,정재훈,윤보현,이석인,김민선,오태근,조보연,이홍규,고창순 대한내분비학회 1994 Endocrinology and metabolism Vol.9 No.3

It is well known that normal pregnancy is accompanied by a rise in serum concentrations of thyroxine-binding globulin(TBG) and human chorionic gonadotropin (hCG). Alterations of biochemical parameters of thyroid function are recognized during gestation and sensitive tests to evaluate the alterations easily are required. Therefore, a cross-sectional study was undertaken in 140 healthy pregnant women to evaluate the efficacy of free T_4 measured by 2-step RIA compared to other thyroid function tests and to confirm the changes of thyroid function according to the stages of normal pregnancy. The sensitivities of free T_4 index, free T_4(by 2-step RIA), T_3 and TSH were realtively high(99.3%, 93.6%, 92.9%, 83.6%, respectively) compared to those of T_4 and T_3 bead upgake(49.3%, 21.4%) during all stages of pregnancy. There were positive correlations between free T_4 index and free T_4 or total T_4(r=0.68, r=0.72; p$lt;0.001). The values of free T_4 index sharply decreased from 3.22+-0.10(meam +-SEM) during 6th-12th week to an plateau after 16th-20th week of gestation(p$lt;0.01). The serum concentrations free T_4 and T_3 bead uptake also significantly decreased from 1.65+-0.05 ng/dl, 24.7+- 0.7% during 6th-12th week to an plateau after 16th-20th week of gestation, respectively(p$lt;0.001), No differences were found in the changes of serum concentrations of T_3, T_4 and TSH according to the stages of pregnancy. In conclusion, it is adequate to measure some tests including free T_4 index and free T_4 to evaluate thyroid function during pregnancy. The thyroid physiology and changes of thyroid function according to the stages of pregnancy should be considered in the interpretation of thyroid function status during pregnancy(J Kor Soc Endocrinol 9: 183-189, 1994).

Differentiation of Recurrent Tumor and Posttreatment Changes in Head and Neck Squamous Cell Carcinoma: Application of High b-Value Diffusion-Weighted Imaging

Hwang, I.,Choi, S.H.,Kim, Y.-J.,Kim, K.G.,Lee, A.L.,Yun, T.J.,Kim, J.-h.,Sohn, C.-H. American Society of Neuroradiology 2013 AJNR, American journal of neuroradiology Vol.34 No.12

<P><B>BACKGROUND AND PURPOSE:</B></P><P>High b-value DWI has been expected to have an additional diagnostic role and demonstrated some promising results in head and neck cancer. The aim of this study was to evaluate the diagnostic performance of DWI at a high b-value (<I>b</I>=2000 s/mm<SUP>2</SUP>) compared with a standard b-value (<I>b</I>=1000 s/mm<SUP>2</SUP>) and the ratio of ADC values of high and standard b-values for their ability to differentiate between recurrent tumor and posttreatment changes after the treatment of head and neck squamous cell carcinoma.</P><P><B>MATERIALS AND METHODS:</B></P><P>A total of 33 patients diagnosed with head and neck squamous cell carcinoma were enrolled in the present study; all had contrast-enhancing lesions on follow-up MR imaging. All patients underwent single-shot echo-planar DWI at <I>b</I>=1000 s/mm<SUP>2</SUP> and <I>b</I>=2000 s/mm<SUP>2</SUP>, and corresponding ADC maps were generated (ADC<SUB>1000</SUB> and ADC<SUB>2000</SUB>, respectively). The mean ADC<SUB>1000</SUB>, ADC<SUB>2000</SUB>, and ADC<SUB>ratio</SUB> (ADC<SUB>ratio</SUB> = ADC<SUB>2000</SUB>/ADC<SUB>1000</SUB> × 100) values were evaluated within a manually placed ROI with contrast-enhanced T1-weighted images as references. For the statistical analysis, we performed a Student <I>t</I> test and multivariate logistic regression.</P><P><B>RESULTS:</B></P><P>The mean ADC<SUB>1000</SUB> in recurrent tumor was significantly lower than that in posttreatment changes (<I>P</I> < .001), whereas the mean ADC<SUB>2000</SUB> resulted in no significant difference (<I>P</I> = .365). The mean ADC<SUB>ratio</SUB> was significantly higher in recurrent tumor than that in posttreatment changes (73.5 ± 7.2% vs 56.9 ± 8.8%, respectively; <I>P</I> < .001). Multivariate logistic regression analysis revealed that the ADC<SUB>ratio</SUB> was the only independently differentiating variable (<I>P</I> = .024). The sensitivity, specificity, and accuracy of ADC<SUB>ratio</SUB> were 95.0%, 69.2%, and 84.8%, respectively, by use of the optimal cutoff value of 62.6%.</P><P><B>CONCLUSIONS:</B></P><P>We suggest that the ADC<SUB>ratio</SUB> calculated from the ADC<SUB>1000</SUB> and ADC<SUB>2000</SUB> is a promising value for the differentiation of recurrent tumor and posttreatment changes in head and neck squamous cell carcinoma.</P>

Effect of Dietary Copper Sources (Cupric Sulfate and Cupric Methionate) and Concentrations on Performance and Fecal Characteristics in Growing Pigs

Huang, Y.,Zhou, T.X.,Lee, J.H.,Jang, H.D.,Park, J.C.,Kim, I.H. Asian Australasian Association of Animal Productio 2010 Animal Bioscience Vol.23 No.6

This study was conducted to assess the effects of organic and inorganic copper on performance in growing pigs. A total of 100 pigs, average age 63 d and initial body weight 21.46${\pm}$1.13 kg, were assigned to five treatment groups. Dietary treatments included i) CON (basal diet, 0 ppm Cu), ii) T1 (basal diet with 67 ppm Cu as cupric sulfate, $CuSO_4$), iii) T2 (basal diet with 134 ppm Cu as $CuSO_4$), iv) T3 (basal diet with 67 ppm Cu as cupric methionate, CuMet) and v) T4 (basal diet with 134 ppm Cu as CuMet). Throughout the entire experimental period, ADG (average daily gain), ADFI (average daily feed intake) and G/F (gain: feed) ratios showed no significant differences. The dry matter digestibility was improved in the T1, T2, T3, and T4 treatments (p<0.05), as compared with CON. Nitrogen digestibility was improved in the T3 treatment group as compared with CON (p<0.05). As compared with the T1 treatment group, fecal pH values were improved in the CON, T3, and T4 treatment groups (p<0.05). Fecal Cu concentrations were significantly lower in the CON, T3, and T4 treatment groups than in T1 and T2 (p<0.05). The incidence of diarrhea was reduced when the pigs were fed on the T2, T3, and T4 diets as compared with CON. In conclusion, diets supplemented with 67 or 134 ppm Cu as CuMet may prove effective in improving nutrient digestibility and fecal pH value in growing pigs, and fecal Cu concentrations may be reduced by CuMet supplementation.

Common promoter polymorphism in monocyte differentiation antigen CD14 is associated with serum triglyceride levels and body mass index in non-diabetic individuals

Shin, H. D.,Park, K. S.,Park, B. L.,Cheong, H. S.,Cho, Y. M.,Lee, H. K.,Lee, J.-Y.,Lee, J.-K.,Kim, H. T.,Han, B. G.,Kim, J. W.,Koh, I.,Kim, Y. J.,Oh, B.,Kimm, K.,Park, C. Blackwell Science Ltd 2006 Diabetic medicine Vol.23 No.1

<P>Abstract</P><P>Aims </P><P>Growing evidence supports the hypothesis that chronic low-grade inflammation related to innate immunity may play an important role in the pathophysiology of Type 2 diabetes mellitus (T2DM). The monocyte differentiation antigen CD14 gene (<I>CD14</I>) acts as the receptor for lipopolysaccharide (LPS) and augments monocyte/macrophage inflammatory responses.</P><P>Methods </P><P>We have sequenced the gene, including all exons, exon/intron boundaries, and the −1.5 kb of the 5′ flanking region. Two common loci (minor allele frequency > 0.05) were genotyped in 775 T2DM patients and 316 control subjects recruited in the Korean T2DM Study.</P><P>Results </P><P>Eight polymorphisms, including four non-synonymous forms, were identified in <I>CD14</I>. No polymorphisms were found in association with T2DM. However, one common promoter SNP (<I>−260T>C</I>) was significantly associated with both the serum triglyceride level (TG) and body mass index (BMI) in non-diabetic control subjects. Individuals who carried the minor allele (C) had higher TG levels (1.65 ± 0.81 vs. 1.46 ± 0.80 mmol/l; <I>P</I> = 0.0007) and BMI (23.96 ± 3.00 vs. 23.28 ± 3.22 kg/m<SUP>2</SUP>; <I>P</I> = 0.04) as compared with subjects carrying T/T genotypes.</P><P>Conclusion </P><P>Our data suggest that lipid metabolism and obesity, important pathophysiological elements of T2DM and the metabolic syndrome, are regulated by complex mechanisms that include the CD14 gene polymorphism-mediated genetic propensity to non-specific inflammatory responses.</P>

200 GeV/핵자 유황이온과 핵건판핵의 충돌에 의해 생성된 헬륨 파쇄핵의 극한파쇄 연구

김동철,송진섭,윤천실,정성헌,박인곤,김종오,김철수,김태연,이승희,조재희,천병구,김재률,김준원,김태익,박명렬,장한일,임인택 慶尙大學校 기초과학연구소 1992 基礎科學硏究所報 Vol.8 No.-

고에너지 중이온 원자핵과 핵건판의 충돌에서, 200GeV/핵자 유황이온에 의해 생성된 파쇄 헬륨핵(Z=2)의 실험실계의 방출각 분포는 표적핵에 무관한 회귀공식. dN=exp[a+k exp(η-y_b)]d[exp(η-y_b)]로 잘 표현된다. 여기에서 의사신속도 η=-ln[tan(θ/2)]이고, y_b는 실험실계의 입사입자(^32S)의 신속도이다. 이 공식에 의한 적합에서 k=-0.057±0.008로 얻어진다. 즉, 핵건판과 고에너지 중이온의 충돌에서 파쇄 헬륨핵의 exp(η-y_b)의 분포는 "극한파쇄" 현상을 잘 설명하고 있다. The angular distribution of emission angle θ of helium (Z=2) produced in the collisions of incident particles of 200 GeV/nucleon ^32S in nuclear emulsion is well expressed by dN=exp[a+k exp(η-y_b)]d[exp(η-y_b)] where the pseudorapidity is η=-ln[tan(θ/2)], the laboratory system primary rapidity is y_b, and k=-0.057+0.008. The shape of this frequency of occurrence distributions in terms of exp(η-y_b) attests to the validity of the concept of "limiting fragmentation" for helium projectile fragments produced in the projectile fragmentation regions of heavy ion collisions in nuclear emulsion.

Polymorphisms in the neurokinin-2 receptor gene are associated with angiotensin-converting enzyme inhibitor-induced cough

Kim, T.-B.,Oh, S.-Y.,Park, H.-K.,Jeon, S.-G.,Chang, Y.-S.,Lee, K.-Y.,Cho, Y. S.,Chae, I.-H.,Kim, Y.-K.,Cho, S.-H.,Moon, H.-B.,Min, K.-U.,Kim, Y.-Y. Blackwell Publishing Ltd 2009 Journal of clinical pharmacy and therapeutics Vol.34 No.4

<P>Summary</P><P>Background and objective: </P><P>Treatment with angiotensin-converting enzyme (ACE) inhibitors can induce chronic cough in many patients. Genetic variations in the neurokinin 2 receptor gene (NK2R) are significantly associated with cough sensitivity to capsaicin.</P><P>Methods: </P><P>This study assessed the relationship between genetic polymorphisms in the NK2R gene and chronic cough in 91 patients taking ACE inhibitors. Patients included in the study did not have chest abnormalities, postnasal drip, gastroesophageal reflux or a recent history of upper respiratory infection.</P><P>Results: </P><P>We detected two single nucleotide polymorphisms in the NK2R gene (i.e., Gly231Glu and Arg375His). The allelic frequencies at amino acid 231 were 36·3% for Gly/Gly, 49·5% for Gly/Glu and 14·3% for Glu/Glu. The allelic frequencies at amino acid 375 were 74·7% for Arg/Arg, 24·2% for Arg/His and 1·1% for His/His. The prevalence of chronic cough in patients with the amino acid 231 genotype was 33·3% in Gly/Gly homozygotes, 24·4% in Gly/Glu heterozygotes and 0% in Glu/Glu homozygotes. There was a statistically significant association between chronic cough and the Glu/Glu allele (<I>P</I> = 0·028) when the data were analyzed with a recessive model. In addition, there was a significant inverse linear association between the number of Glu231 alleles and ACE inhibitor-related cough (<I>P </I>=<I> </I>0·026). The prevalence of chronic cough in patients with the amino acid 375 genotype was 22·1% in Arg/Arg homozygotes, 31·8% in Arg/His heterozygotes and 0% in His/His homozygotes, although none of these association were statistically significant.</P><P>Conclusion: </P><P>Our findings indicate that the Gly231Glu polymorphism is associated with a lower prevalence of ACE inhibitor-related cough.</P>

Sub Bandgap Photonic Base Current Method for Characterization of

H. T. Shin,K. H. Kim,D. J. Kim,D. M. Kim,D. W. Kang,H. S. Park,H. T. Kim,I. C. Nam,J. B. Choi,J. U. Lee,K. S. Min,K. S. Kim,S. W. Kim,T. E. Kim 한국물리학회 2004 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.44 No.6

In this paper, we propose a novel photonic base current analysis method to characterize the interface states in heterojunction bipolar transistors (HBTs) by using the photonic I-V characteristics under sub-bandgap photonic excitation. For the photonic current-voltage characterization of HBTs, an optical source with a photon energy less than the bandgap energy of Al0:3Ga0:7As and GaAs (Eph = 0.95 eV < Eg;AlGaAs = 1.79 eV & Eg;GaAs = 1.45 eV) is employed for the characterization of the interface states distributed in the photo-responsive energy band (EC - 0.95 Eit EC) in emitter-base heterojunction at HBTs. The proposed novel method, which is applied to bipolar junction transistors for the rst time, is simple, and an accurate analysis of interface traps in HBTs is possible. By using the photonic base-current and the dark-base-current, we qualitatively analyze the interface trap at the Al0:3Ga0:7As/GaAs heterojunction interface in HBTs.

톱밥 발효사료 급여 및 분말어유의 첨가사료가 돈육의 이화학적 성질에 미치는 영향

이정일,문점동,박구부,박범영,박태선,황보종,이한기,진상근,김영직 한국축산학회 1997 한국축산학회지 Vol.39 No.5

This study was conducted to investigate the influence of pork quality pigs which were fed with diets supplemented with fermented sawdust and sardin powder oil. The pigs were randomly assigned to one of the four treatments: a), control (commercial feed); b), T1 (30% fermented sawdust); c), T2 (10% sardin powder oil) d), T3 (30% fermented sawdust, l0% sardin powder oil and 30% limited amino acid) from 30 kg to 110 kg B. Wt. and slaughtered. The samples were stored at 0±1 C. The physico-chemical properties were determined at the dust of 2, 4, 6, 8 and 15. For the loin the pH's of all the treatments on the 15th day were higher than those of the 2nd day, and that of TI was higher than those of the others. The total moisture contents of all treatments decreased with the storage (P$lt;0.05), and there were no significant differences among treatments on the 15th day. The water soluble proteins of all treatments increased with time and were highest on the 8th day and decreased gianibicanth thereater. T1 had significantly higher water soluble protein than others(P$lt;0.05). The salt soluble proteins of all treatments increased with lure the days(P$lt;0.05). T1 had higher salt soluble protein than others during the storage period(P$lt;0.05). The brittleness, hardness, cohesiveness, gumminess and chewiness of all the treatments were not significantly different among during the period, but elasticity of them increased after from the 2nd day. The brittleness of control was higher than that of the others on the 15th day, and the hardness and chewiness of control were higher than those of the others on the 6th day(P$lt;0.05). Forthebelly the pH's of all the treatments on the 15th day were higher than those of the at 2nd day(P$lt;0.05). T1 showed higher pH than the others during the period(P$lt;0.05). The total moisture contents of control and T1 were significantly decreased with time and there were no significant differences between T2 and T3. T1 showed the highest value. The water soluble proteins of all the treatments decreased with time and was lower on the 15th day(P$lt;0.05). That of control and T1 was significantly higher than that of others on the 2nd day, but there were no significant differences among the treatments on the 15th day. The salt soluble proteins of all treatments increased with time (P$lt;0.05), and they were highest on the 15th day. T1 had significantly higher salt soluble protein than the others on the 8th and 15th days.

The doping dependence of the irreversibility line in grain-aligned Sm_1-xEu_xBa₂Cu₃O_7-δ; high-T_c superconductor

Ahmad, D.,Song, T.K.,Park, I.,Kim, G.C.,Kim, Y.C. Elsevier 2010 CURRENT APPLIED PHYSICS Vol.10 No.5

The irreversible properties of a rare-earth high-T<SUB>c</SUB> superconductor are investigated using grain-aligned Sm<SUB>1-x</SUB>Eu<SUB>x</SUB>Ba<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>7-δ</SUB>; (x = 0.0, 0.3, 0.5, 0.7, and 0.9) samples. The samples were synthesized using the usual solid-state reaction method. It is found that the transition temperature T<SUB>c</SUB> and the critical current density J<SUB>c</SUB> calculated by the Bean model are significantly improved in the optimally doped samples (x = 0.5 and 0.7). Furthermore, the double logarithmic graph of the irreversibility line B<SUB>irr</SUB> in the grain-aligned series samples obeys approximately a power law dependence (1-T/T<SUB>c</SUB>)<SUP>n</SUP>. Results show that in the case of optimally doped samples with x = 0.5 and 0.7 the graph of B<SUB>irr</SUB> is fitted well with the relation (1-T/T<SUB>c</SUB>)<SUP>n</SUP> with the model-dependent parameter n ∼1.5 without any crossover in the entire temperature range, while in samples with x = 0.0, 0.3, and 0.9 B<SUB>irr</SUB> does show a prominent crossover and can be characterized with n ∼1.5 only near T<SUB>c</SUB>, above which B<SUB>irr</SUB> varies more rapidly. Finally, it is suggested that B<SUB>irr</SUB> is strongly dependent on the extrinsic properties of our grain-aligned samples.

방사면역측정법에 의한 유리티록신 (Free T4 ) 의 정상범위

김동민 ( D M Kim ),흥미경 ( M K Hong ),류만길 ( M K Ryu ),김현주 ( H J Kim ),서일택 ( I T Seo ) 대한임상검사과학회 1993 대한임상검사과학회지(KJCLS) Vol.25 No.1

Majority of thyroid hormone exists as bound from in blood. Only 0.02% of thyroxin(T4) and 0.3% of triiodothyronine(T3) exists as free form in circulation. Free T4 is active component of T4 in blood and it is important to measure it for the diagnosis of thyroid function. Normal 164 samples were selected randomly from 2,207 medical examination serum. Free T4 level in each sample was determined by onestep RIA and two-step RIA. Statistical results were obtained from the results using computer. Normal range was determined by mean± 2SD in each group after rejecting mean± 3SD. The results were : 1) Normal range in two-step RIA and onestep RIA was 0.93 ~ 2.13ng/dl and 0.73 ~ 1.89 ng/dl, respectively. 2) No significant differences were found between different condition RIAs. 3) Dilution test showed linearity. 4) Recovery test showed 83.4% ~ 1 00%.