가압가열 및 microwave에 의한 중력분 반죽 gliadin의 항원성 변화

곽지희(Ji-Hee Kwak),김꽃봉우리(Koth-Bong-Woo-Ri Kim),이청조(Chung-Jo Lee),김민지(Min-Ji Kim),김동현(Dong-Hyun Kim),선우찬(Chan Sunwoo),정슬아(Seul-A Jung),김현지(Hyun-Jee Kim),최정수(Jung-Su Choi),김성원(Seong-Won Kim),안동현(Dong-Hyun 한국식품과학회 2012 한국식품과학회지 Vol.44 No.1

본 연구에서는 가압가열 및 microwave 처리에 의한 중력분 반죽 추출물 내의 gliadin 단백질의 항원성 변화에 대해 살펴보았다. 중력분 반죽에 가압가열과 microwave를 단독 또는 병행으로 처리하여 ci-ELISA, SDS-PAGE 및 immunoblotting을 실시하였으며, 가압가열 처리에 의해서 anti-gliadin IgG 항체와 gliadin과의 결합력이 다소 감소한 것을 확인하였다. 특히 30 min 이상 처리시 더욱 감소한 것으로 나타났으며, SDS-PAGE와 immunoblotting 결과에서도 gliadin band의 강도가 약해지고 항체와의 반응도 나타나지 않았다. Microwave 처리의 경우, 5 min 이상 처리시 일부 gliadin 단백질의 소실이 관찰되었으나, 항원성에는 큰 변화가 없었다. 또한 가압가열 및 microwave 병행 처리에 의해 항원-항체 결합력이 더욱 감소되었으며, 특히 가압가열 50 min, microwave 10 min 처리시 약 35.0%로 감소되었다. 이상의 결과를 통해 가압가열 처리에 의해 중력분 반죽 추출물 내 gliadin의 항원성이 감소되는 것을 확인하였으며, microwave와 병행 처리하는 경우, 더욱 감소하는 것을 확인하였다. The aim of this study was to determine the optimal physical treatment to reduce the antigenicity of gliadin in wheat dough. Medium wheat dough was treated with an autoclave (5, 10, 30, and 50 min at 121℃, 1 atm), a microwave (1, 5, and 10 min) or both (10, 30, and 50 min/5, 10 min). The proteins in the dough extracts were analyzed by SDS-PAGE and the binding ability of anti-gliadin IgG to gliadin was examined by ci-ELISA and immunoblotting. Results showed that the ability of anti-gliadin IgG to bind to gliadin in wheat dough treated with an autoclave alone or in combination with a microwave was decreased. Especially, it declined to ~77% after autoclaving for 30 min and 35% after both autoclaving for 50 min and microwaving for 5 min. In addition, the intensity of gliadin bands in SDS-PAGE were weakened and anti-gliadin IgG did not recognize gliadin in immunoblotting. However, microwaving alone did not affect the antigenicity of gliadin in wheat dough. These results indicate that autoclaving may affect the reduction of the antigenicity of gliadin in medium wheat dough. Moreover, autoclaving in combination with microwaving is more effective for reducing the antigenicity of wheat dough.

가압가열 및 Microwave 처리에 의한 중력분 Gliadin의 항원성 변화

곽지희(Ji-Hee Kwak),김꽃봉우리(Koth-Bong-Woo-Ri Kim),이청조(Chung-Jo Lee),김민지(Min-Ji Kim),김동현(Dong-Hyun Kim),선우찬(Chan Sunwoo),정슬아(Seul-A Jung),강주연(Ju-Youn Kang),김현지(Hyun-Jee Kim),최정수(Jung-Su Choi),김성원(Seong-Won 한국식품영양과학회 2011 한국식품영양과학회지 Vol.40 No.10

본 연구에서는 가압가열 및 microwave 처리가 gliadin의 항원성에 미치는 영향을 살펴보기 위해 중력분에 가압가열과 microwave를 단독 또는 병행으로 처리하여 Ci-ELISA, SDS-PAGE 및 immunoblotting을 실시하였다. 가압가열 처리의 경우, 처리 시간이 길어질수록 IgG와의 결합력이 감소하였으며, 특히 50분 처리구에서 약 69%로 가장 낮은 결합력을 보였다. 또한 SDS-PAGE와 immunoblotting 결과에서도 무처리구에서 강하게 보였던 gliadin band가 처리에 의해 거의 소실되고 항체와 반응하지 않았다. 가압가열 및 microwave를 병행 처리한 경우도 마찬가지로 gliadin의 결합력이 다소 감소하였으며, 처리구 중에서는 가압가열 50분, microwave 5분 처리구에서 약 73%로 가장 낮은 결합력을 보였다. 반면 microwave를 단독으로 처리하였을 때에는 일부 단백질의 변화는 관찰되었으나 항원성 감소에는 큰 영향을 미치지 않았다. 이상의 결과를 통해 가압가열을 단독 처리에 의해 gliadin의 항원성이 다소 감소되었으며, microwave 병행 처리에 의한 차이는 크게 나타나지 않은 것을 확인하였다. This study was conducted to evaluate the effect of physical treatments on the antigenicity of gliadin in medium wheat flour. The wheat flour was treated with an autoclave (5, 10, 30, 50 min), a microwave (1, 5, 10 min), and both (10, 30, 50 min/ 5, 10 min), and investigated by SDS-PAGE, immunoblotting and Ci-ELISA using anti-gliadin IgG. The results showed that the binding ability of anti-gliadin IgG to gliadin in wheat flour was slightly decreased when autoclaved or when autoclaved and microwaved. Especially, it was reduced to about 69% after autoclaving for 50 min and 73% after autoclaving for 50 min and microwaving for 5 min. In addition, gliadin bands in the 50 min autoclaved group disappeared in both SDS-PAGE and immunoblotting. On the other hand, the antigenicity of gliadin was unaffected by microwaving alone. Consequently, there were no considerable changes in using an autoclave alone or in combination with a microwave. These results suggest that autoclaving may affect the reduction of the antigenicity of gliadin in medium wheat flour.

ATM-dependent chromatin remodeler Rsf-1 facilitates DNA damage checkpoints and homologous recombination repair.

Min, Sunwoo,Jo, Sujin,Lee, Ho-Soo,Chae, Sunyoung,Lee, Jong-Soo,Ji, Jae-Hoon,Cho, Hyeseong Landes Bioscience 2014 Cell Cycle Vol.13 No.4

<P>As a member of imitation switch (ISWI) family in ATP-dependent chromatin remodeling factors, RSF complex consists of SNF2h ATPase and Rsf-1. Although it has been reported that SNF2h ATPase is recruited to DNA damage sites (DSBs) in a poly(ADP-ribosyl) polymerase 1 (PARP1)-dependent manner in DNA damage response (DDR), the function of Rsf-1 is still elusive. Here we show that Rsf-1 is recruited to DSBs confirmed by various cellular analyses. Moreover, the initial recruitment of Rsf-1 and SNF2h to DSBs shows faster kinetics than that of γH2AX after micro-irradiation. Signals of Rsf-1 and SNF2h are retained over 30 min after micro-irradiation, whereas γH2AX signals are gradually reduced at 10 min. In addition, Rsf-1 is accumulated at DSBs in ATM-dependent manner, and the putative pSQ motifs of Rsf-1 by ATM are required for its accumulation at DSBs. Furtheremore, depletion of Rsf-1 attenuates the activation of DNA damage checkpoint signals and cell survival upon DNA damage. Finally, we demonstrate that Rsf-1 promotes homologous recombination repair (HRR) by recruiting resection factors RPA32 and Rad51. Thus, these findings reveal a new function of chromatin remodeler Rsf-1 as a guard in DNA damage checkpoints and homologous recombination repair.</P>

물리․화학적 처리에 의한 요구르트 오염균의 생육 억제효과

선우찬(Chan Sunwoo),이소영(So-Young Lee),윤소영(So-Young Yoon),정지연(Ji-Yeon Jung),김꽃봉우리(Koth-Bong-Woo-Ri Kim),이청조(Chung-Jo Lee),곽지희(Ji-Hee Kwak),김민지(Min-Ji Kim),김동현(Dong-Hyun Kim),정슬아(Seul-A Jung),김현지(Hyun-Jee 한국식품영양과학회 2011 한국식품영양과학회지 Vol.40 No.12

물리?화학적 처리에 의한 요구르트 오염균의 생육억제 효과를 알아보기 위해, 요구르트의 주요 오염균을 분리?동정하고, 열, pH, 전해수, 오존가스, microwave 처리 및 감마선을 조사하여 오염균주에 대한 사멸효과를 알아보았다. 오염된 요구르트로부터 분리한 효모의 지방산 조성 분석과 API(Analytic Profile Index) kit 분석을 실시한 결과, Hanseniaspora uvarum으로 동정되었으며 잠정적으로 Hanseniaspora uvarum Y1으로 명명하였다. H. uvarum Y1의 열 및 pH 처리에 의한 생육억제 효과를 측정한 결과, 70℃ 및 80℃에서 15분 가열처리로 균이 사멸되었으며, pH 처리 시 pH 2, 3 및 9에서 생육이 다소 억제되었으며, pH 1 및 10에서 완전히 억제되었다. 전해수 처리의 경우, clear zone이 5 mm 이상으로 H. uvarum Y1이 전해수에 높은 감수성을 가지는 것으로 나타났다. 오존가스 처리에 의한 H. uvarum Y1의 사멸효과를 측정한 결과, 102 CFU의 균은 10분, 103 CFU의 균은 20분 처리 시 모두 사멸한 것으로 나타났으며, microwave 처리의 경우, 106 CFU 가량의 균이 1분 처리 시 모두 사멸되었다. 방사선 조사의 경우, 균수를 90% 이상 감소시키는데 필요한 조사선량이 20 kGy 이상으로 H. uvarum Y1은 감마선에 저항성이 있는 균임을 알 수 있었다. 이상의 결과를 종합해볼 때 열, pH, 전해수, 오존가스, microwave 처리를 통해 요구르트 오염균주인 H. uvarum Y1의 생육을 효과적으로 억제할 수 있을 것으로 생각된다. This study was conducted to investigate the cause of microbiological contamination in yogurt and evaluate the effect of physicochemical treatment on the growth inhibition of Hanseniaspora uvarum isolated from yogurt. The yeast strain Hanseniaspora uvarum Y1 was subjected to heat and pH treatments. H. uvarum Y1 was killed at 70oC and 80oC after 15 min and survived in a wide pH range from pH 2 to 9. However, it did not survive under pH 1 and over pH 10. In a disk diffusion susceptibility test on H. uvarum Y1, a clear zone (5 mm) of growth inhibition was observed upon treatment with electrolyzed water. The effect of ozone gas on the growth of H. uvarum Y1 was evaluated by viable cell count. Initial cell numbers of 102 and 103 CFU/mL of H. uvarum Y1 were completely killed by treatment for 10 and 30 min, respectively. H. uvarum Y1 was also sterilized by microwave treatment for 1 min. When treated with gamma-irradiation, the rate of killing of H. uvarum Y1 was proportional to the irradiation dose. and complete killing occurred at a dose of 50 kGy.

물리ㆍ화학적 처리에 의한 멸균 초콜릿 우유 오염균의 생육억제 효과

최문경(Moon-Kyoung Choi),윤소영(So-Young Yoon),이소영(So-Young Lee),김꽃봉우리(Koth-Bong-Woo-Ri Kim),이청조(Chung-Jo Lee),정지연(Ji-Yeon Jung),곽지희(Ji-Hee Kwak),김민지(Min-Ji Kim),김동현(Dong-Hyun Kim),선우찬(Chan Sunwoo),이주운(Ju-W 한국식품영양과학회 2011 한국식품영양과학회지 Vol.40 No.8

멸균 초콜릿 우유로부터 분리한 내열성 균주에 대해 열, pH, 전해수, 오존처리, microwave 및 감마선 처리를 하여 균주의 사멸효과에 대해 알아보았다. 균주의 지방산 분석과 API kit를 통하여 균주를 동정한 결과, Bacillus lentus로 동정되었으며, 잠정적으로 Bacillus lentus M1으로 명명하였다. B. lentus M1에 110℃, 15분간 열처리하였을 경우 생육이 억제되었으며, pH 처리 시 pH 5 이하, 10 이상에서 생육이 억제된 것으로 나타났다. B. lentus M1에 대한 전해수의 항균활성을 paper disc법으로 측정한 결과, 높은 생육억제를 보였으며, 오존 처리의 경우 초기 균수가 10² CFU가량의 균을 10분 동안, 10³ CFU가량의 균을 30분 동안 처리 시 균의 생육이 억제되는 것으로 나타났다. Microwave를 1분간 처리 시 B. lentus M1이 모두 사멸한 것으로 나타났다. 감마선 조사의 경우, 1 kGy 조사 시 생균수가 1.61×10³ CFU로 초기 균수에 비해 4 log cycle 가량 균수가 감소하였으며 7 kGy에서 완전히 사멸하였다. 이상의 결과를 통해 열, pH, 전해수, 오존 처리 및 방사선 처리 방법이 멸균 초콜릿 우유의 생존 오염균인 B. lentus M1을 효과적으로 사멸시킬 수 있을 것으로 사료된다. This study was conducted to investigate the cause of microbiological contaminants in aseptic chocolate milk and evaluate the effect of a physicochemical treatment on the growth inhibition of isolated bacterial strains. The bacterium isolated from aseptic chocolate milk was identified as Bacillus lentus and was named B. lentus M1. In the heat and pH treatment, the growth of B. lentus was inhibited at 110℃ for >15 min and at pH’s <5 and >10. An electrolyzed water treatment against B. lentus M1, revealed 5 ㎜ growth past the inhibition zone. The effect of ozone gas on B. lentus M1 growth was evaluated using viable cell counts. When the initial number of B. lentus M1 was 10² and 10³ CFU, the bacteria were completely suppressed by ozone gas treatment for 10 and 30 min, respectively. In a microwave treatment, B. lentus M1 was sterilized following microwave treatment for 1 min. As the result of γ-irradiation against B. lentus M1, numbers decreased as the γ-irradiation dosage increased. These results show the growth inhibition effects against contaminants in aseptic chocolate milk using physicochemical treatments.

Tourette 장애 소년에서 자기공명영상을 이용한 기저핵의 용적 분석

선우영경,신용범,이명지,김지영,배재남,강민희,김철응,이정섭 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.4

Objectives : The purpose of this study was to investigate the regional differences of the basal ganglia volume between the boy subjects who have Tourette's disorder and the control group who don't have this disorder by using Brain MRI. Methods : Sixteen subjects who were diagnosed as Tourette's disorder using DSM-IV criteria, and sixteen healthy subjects were selected. For analysis the coronal slice images of the basal ganglia were collected and collected MR images were analyzed with NIH Image (version 6.1 ppc). Resuls : The total brain volume in the subjects with Tourette's disorder were smaller than control group by 6.2% (F=6.2, d.f.=1, P=0.019). The right putamen volume in boys with Tourette's disorder were significant smaller than control group statistically (F=3.2, d.f.=3, P=0.040). The asymmetry (1eft>right) in the globus pallidus decreased significantly in the boys with Tourette's disorder (p=0.06) were found from this experiment. Conclusion : These findings suggest that boys with Tourette's disorder may have neuropathological abnormalities in the basal ganglia. Moreover, the present findings point out the important role of basal ganglia, especially putamen, in Patho-physiology of Tourette's disorder. More studies about the structural and functional analysis of the basal ganglia in Tourette's disorder are highly required.

충남 서북부지역 여성의 질세포진 검사에 대한 임상적 고찰

이석민,선우재근,장경택,서수형,김민관,배동한 순천향의학연구소 1996 Journal of Soonchunhyang Medical Science Vol.2 No.2

Pap smear were performed to 30,294 women living in the north-west of Chung-nam. The result are summarized below 1. Positive vaginal cytology was 1.09 percent. 2. 72 percents women in their 30's and 40's experienced vaginal cytology. 3. Vaginal cytology was performed at a decreasing rate as age increases. 4. Positive cytology rate is 2.42% higher than average for elderly women over the age of 65. The present date indicates that pap smear is being widely recognized to be important but they needs to be continued advocacy for pap smear.

shRNA-발현 아데노바이러스를 이용한 백서 심실 근세포 제2아형 이노시톨 1,4,5-삼인산 수용체의 넉 다운

손민정,이선우,우선희 충남대학교 약학대학 의약품개발연구소 2008 藥學論文集 Vol.23 No.-

Inositol 1,4,5-trisphosphate(IP3) is a second messenger that induces the release of Ca2+ from the endoplasmic/sarcoplasmic reticulum. The IP3 receptor(IP3R)-mediated signaling pathway appears to be ubiquitous and is involved in many cellular processes including cell division, fertilization and neuronal function. Although cardiac myocytes have the IP3R, its pathophysiological role has not been clearly understood because of limited selectivity of currently available pharmacological blockers. Here we show expression of type 2 IP3R(IP3R2) at the peri-nuclear region in adult rat ventricular myocytes using western blotting and immunostaining, and successful construction of IP3R2 shRNA-expressing adenovirus to knock down the protein. The expression and localization of the IP3R2 were eliminated by 6 h-infection of the shRNA-expressing adenovirus (150 multiplicity of infection) within 2 days in primary cultured adult rat ventricular myocytes. This study provides a reliable tool for probing the role of IP3R2 in intact cardiac myocytes.

Cascade-Neuro-Fuzzy-PID 적응제어에 대한 연구

유민수,선우창신 全南大學校 觸媒硏究所 2003 觸媒硏究 論文集 Vol.24 No.-

The Cascade-Neuro-PID controller has been developed and applied for the gas heating process. The parameters of the master PID controller were obtained as the outputs of the neural networks using system jacobian calculated from neural identifier. To do not fall in local minimum point optimized parameters of Neuro-PID controller, learn rate of neural network was calculated by fuzzy logic algorithm. In simulation results, the Cascade-Neuro-Fuzzy-PID controller has shown the good robust control response characteristics without overshoots.

정신분열병 환자의 말초 임파구에서 도파민 수용체 mRNA의 변화

곽용태,최철희,김옥준,주연호,김형섭,강성숙,구민성,선우일남 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.5

연구목적 : 정신분열병은 주로 청소년기에 발병하는 정신과에서 가장 흔한 질환 중의 하나이다. 이 질환의 원인이나 병인은 아직 불확실하지만 뇌 도파민계의 기능장애가 중요한 기전으로 생각되고 있으나 부검없이 뇌 도파민계를 직접 관찰할수 없으므로 많은 혼란이 있어왔다. 이를 극복하기 위하여 최근에 발견된 말초 임파구의 도파민 수용체를 이용하여 정신분열병에 있어서 말초 임파구 도파민 수용체가 뇌 도파민계의 기능을 반영하는 말초표식인자일 가능성이 있는지를 규명한다. 방 법 : 3년 이상 항정신병 약물을 복용중인 정신분열병 환자(약물투약군) 44명, 최근 3개월 이상 항정신병 약물을 복용하지 않은 환자(약물비투약군) 43명, 정상대조군 31명을 대상으로 말초 임파구의 D3, D5 도파민 수용체를 정량적 역전사 중합효소 연쇄반응(quantitative reverse transcritpase polymerase chain reaction)을 이용하여서 정량 비교하였고, 또한 항정신병 약물을 복용하지 않은 환자들에 있어서 약물 투여 후 도파민 수용체의 변화 및 임상양상의 변화를 관찰하였다. 결 과 : 1) 말초혈액 임파구의 D3R/βA는 약물비투약군에서 정상대조군이나 약물투약군에 비하여 통계적으로 유의하게 있게 증가되어 있었다. D5R/βA의 경우 약물비투약군이 약물투약군에서만 비하여 유의하게 증가되었다. 그러나 약물투약군과 정상대조군 간에는 도파민 수용체 mRNA(D3R/βA, D5R/βA)양에 있어서 차이가 없었다. 2) 항정신병 약물을 새로 투여하는 환자에서 항정신병 약물을 투여 후 임파구 도파민 수용체의 변화를 추적 관찰한 결과 증가하는 경향을 보였다. 3) 약물비투약군을 정상 대조군과 비교하여 D3R/βA mRNA가 정상범위에 속하는 군과 높은 군으로 나누어서 임상척도와 비교 분석한 결과 임파구 도파민 수용체가 증가한 군에서 다음과 같은 임상특징을 관찰할 수 있었다. (1) 정신병리증상이(BPRS) 현저하였다. (2) 약물치료에 대해 양성 정신병리증상(pBPRS)의 호전도가 낮았다. (3) 약물치료시 추체외로 부작용이 심하였다. 결 론 : 이상의 연구결과로 말초 임파구에서 발현되는 도파민 수용체는 정신분열병의 소군 분류 및 예후 예측에 있어서 임상적 의의가 있는 것을 알 수 있었다. 따라서 말초임파구에서 발현되는 도파민 수용체는 비록 이에 상응하는 뇌의 해부학적 위치는 알 수 없지만 중추신경계의 도파민 수용체의 기능을 반영할 가능성이 높다고 생각되었다. Objectives : Schizophrenia, commonly developed in adolescence and young adulthood, is one of the most common mental diseases in psychiatry. The etiology or pathogenesis of this disease is uncertain yet, but the dysfunction of dopaminergic system in the brain has been proposed. However, there is no direct evidence of dysfunction of brain dopaminergic systems in schizophrenic patients because the direct assessment of brain dopaminergic systems is almost impossible at present. To overcome this problem, recently founded dopamine receptors and their mRNAs in peripheral lymphocytes was used. The purpose of this study was to define whether the dopamine receptors of peripheral lymphocytes can be the peripheral markers of schizophrenia or not. Methods : The total numbers of subjects are 87 schizophrenic patients. Among them 44 patients were schizophrenics who had been taking antipsychotic drugs for more than 3 years(medicated patients), 43 schizophrenics who recently are not taken antipsychotic drugs for more than 3 months(drug-free patients). For controls age and sex matched 31 healthy persons were enrolled. Sequential reverse transcription and quantitative polymerase chain reaction of the mRNA were used to investigate the expression of dopamine receptors in peripheral lymphocytes. The gene expression of dopamine receptors were compared in each groups and after starting antipsychotic medicines in drug-free patients, the clinical scales and the dopamine receptors of peripheral lymphocytes were sequentially studied before, 2 weeks after and 8 weeks after medication. Results : 1) In drug-free schizophrenics, D3 dopamine receptor mRNA expression of peripheral lymphocytes was significantly increased comparing with that of controls and drug-medicated schizophrenics and D5 dopamine receptor mRNA expression was increased comparing with only that of drug-medicated schizophrenics. There was no difference between controls and drug-medicated schizophrenics. 2) After antipsychotic medication, dopamine receptors of lymphocytes were increased tendency. 3) Drug-free patients were divided into two groups according to dopamine receptor expression in controls to evaluate the significance of increased dopamine receptor expression. The group of patients with increaseddopamine receptor expressio had following clinical characteristics. (1) More severe psychiatric symptoms (2) Poor pharmacological response of pBPRS on medicines (3) Severe extrapyramidal side effects after pharmacological treatment Conculsion : These results revealed that the molecular biologically determined dopamine receptors of peripheral lymphocytes were reactive, and increased expression of dopamine receptor in peripheral lymphocyte had clinical significance for subgrouping and prognostication. These findings suggested that dopamine receptors of peripheral lymphocyte may represent dopamine receptors of the brain, even the location cannot be determined.