다양한 냉동 및 해동공정 조합이 표고버섯의 품질에 미치는 영향

심준보 ( Jun Bo Shim ),조연지 ( Yeon Ji Jo ),최미정 ( Mi Jung Choi ),민상기 ( Sang Gi Min ),유선미 ( Seon Mi Yoo ),천지연 ( Ji Yeon Chun ) 한국산업식품공학회 2015 산업 식품공학 Vol.19 No.3

본 연구는 다양한 냉동방법(강제송풍식냉동, 극저온냉동, 일반냉동)과 해동방법(자연해동, 유수해동, 초음파해동, 전자레인지해동)을 조합하여 처리했을 때 표고버섯의 물리적 품질에 미치는 영향을 관찰하고, 표고버섯의 품질을 유지하는 가장 효과적인 냉·해동 공정을 탐색하는 것이 목적이었다. 급속냉동법(강제송풍식냉동, 극저온냉동)으로 처리한 경우 표고버섯의 해동감량, 보수력, 수분함량은 큰 변화 없이 품질을 유지 하는데 효과적인 것으로 관찰되었다. 특히 보수력은 저속냉동(일반냉동) 및 저속해동(자연해동) 처리의 유무가 영향을 미치는 것으로 나타났다. 전단력의 경우 냉동방법에 의한 영향보다, 전처리 및 해동방법에 더 영향을 받는 것을 판단된다. pH 및 색도는 냉동방법 및 해동방법에 따라 거의 차이가 없는 것으로 관찰되었다. 표고버섯의 물리적 특성을 효과적으로 유지 할 수 있는 처리 조합은 급속냉동(극저온냉동) 및 급속해동(유수해동, 초음파해동, 전자레인지해동)을 한 경우이며, 또한 유지하고 하는 물리적 특성에 따라 냉동 및 해동방법을 다양하게 조합하여 처리한다면, 식품의 품질을 보존하는데 더욱 효과적일 것으로 사료된다. In this study, the potential of various freezing and thawing combinations was investigated for frozen storage of mushroom (Lentinula edodes). Lentinula edodes were sliced (5×5×50 mm) and then blanched in boiling water for 1 min. Samples were frozen by either natural air convection freezing (NCF, -24℃), air-blast freezing (ABF, -45℃), or liquid nitrogen freezing (LNF, -100℃). Frozen Lentinula edodes were thawed to a central temperature of 4℃ using either flowing water thawing (FT, 10℃), microwave thawing (MT, 400 W), sonication thawing (ST, 40 kHz, 10℃), or natural air convection thawing (NT, 20±5℃). In LNF Lentinula edodes, MT showed the most rapid thawing within 2.5 min followed by ST (30 min), FT (37 min), and NT (75 min). Quality attributes were evaluated by thawing loss, texture (hardness), water content, water holding capacity, pH, and color. A combination of LNF and MT induced the lowest thawing loss among tested combinations of each freezing and thawing. Thawing loss of frozen Lentinula edodes by LNF method was the lowest by MT. pH values NT of ABF method were significantly higher than blanched Lentinula edodes. In our study, MT minimized the quality changes of frozen Lentinula edodes when it was combined with ABF or LNF.

Microbead based micro total analysis system for Hepatitis C detection

심태석(Tae Seok Sim),이보람(Bo-Rahm Lee),이상명(Sang-Myung Lee),김민수(Min-Soo Kim),이윤식(Yoon-Sik Lee),김병기(Byung Gee Kim),김용권(Yong-Kweon Kim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7

This paper describes a micro total analysis system (μ TAS) for detecting and digesting the target protein which includes a bead based temperature controllable microchip and computer based controllers for temperature and valve actuation. We firstly combined the temperature control function with a bead based microchip and realized the on-chip sequential reactions using two kinds of beads. The PEG-grafted bead, on which RNA aptamer was immobilized, was used for capturing and releasing the target protein. The target protein can be chosen by the type of RNA aptamer. In this paper, we used the RNA aptamer of HCV replicase. The trypsin coated bead was used for digesting the released protein prior to the matrix assisted laser desorption ionization time of flight mass spectrometer (MALDI TOF MS). Heat is applied for release of the captured protein binding on the bead, thermal denaturation and trypsin digestion. PDMS microchannel and PDMS micro pneumatic valves were also combined for the small volume liquid handling. The entire procedures for the detection and the digestion of the target protein were successfully carried out on a microchip without any other chemical treatment or off-chip handling using 20μl protein mixture within 20 min. We could acquire six matched peaks (7% sequence coverage) of HCV replicase.

원인 불명의 실신 환자의 진단에 있어서 Head - up tilt Test 의 유용성과 혈관미주신경성 실신 환자의 임상적 특징

윤호중(Ho Joong Youn),정욱성(Wook Sung Chung),백상홍(Sang Hong Baek),김철민(Chul Min Kim),박인수(In Soo Park),김재형(Jae Hyung Kim),최규보(Kyu Bo Choi),홍순조(Soon Jo Hong) 대한내과학회 1994 대한내과학회지 Vol.47 No.2

N/A Background: Syncope, defined as a transient loss of consciousness, is a frequently encountered symptom, but despite thorough clinical and invasive diagnostic investigation, the cause of syncope remains unexplained. In recent years, head-up tilt test has been of increasing interest as a diagnostic aids in patients with unexplained syncope. We studied to define the usefulness of various diagnostic test in the evaluation of patients with recurrent syncope, to assess the usefulness of head-up tilt test in the working of syncope of unknown origin and to evaluate the clinical characteristics of subgroups of patients with syncope induced by head-up tilt test. Methods: Between June, 1991 and November, 1992 at St. Mary`s hospital, 21 patients with history of syncope and 24 control subjects without history of syncope underwent 60° head-up tild test for 60 min. Results: 1) The definite cause for recurrent syncope were diagnosed in 10 of patients (47,6%) after clinical and invasive tests. 2) During head-up tilt test, vasovagal responses were provoked in 5 of 21 patients (23.8%) with recurrent syncope and 1 of 24 patients (4.2%) without syncope (p<0,05). 3) The head-up tilt test induced symptomatic bradycardia or hypotension in 3 of 10 patients (30%.) with negative electrophysiologic results. 4) During tilt induced vasovagal response, a) mean heart rate decreased to 42±24 beat/min from supine control of 70±12 beat/min (p<0. 05), b) mean systolic blood pressure decreased to 95±12 mmHg from supine control of 120±S mmHg (p<0,05), c) mean diastolic blood pressure decreased to 60±21mmHg from supine control of 72±13 mmHg (p<0.05), d) the time interval to onset of vasovagal response was 22±12 min. Conclusions: 1) In a large proportion of patients with recurrent syncope, the diagnosis remains unexplained despite a neurologic and cardiologic investigation including an electrophysiologic study. 2) Vasovagal responses are frequent cause in patients with recurrent unexplained syncope. 3) The head-up tilt test may be a simple, safe and highly yielding provocative test in the investigation of syncope of unknown origin.

Nonselective Blocking of the Sympathetic Nervous System Decreases Detrusor Overactivity in Spontaneously Hypertensive Rats

Kim, Khae-Hawn,Jin, Long-Hu,Choo, Gwoan-Youb,Lee, Hun-Jae,Choi, Bo-Hwa,Kwak, Jiyeon,Yoon, Sang-Min,Park, Chang-Shin,Lee, Tack Molecular Diversity Preservation International (MD 2012 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.13 No.4

<P>The involuntary dual control systems of the autonomic nervous system (ANS) in the bladder of awake spontaneously hypertensive rats (SHRs) were investigated through simultaneous registrations of intravesical and intraabdominal pressures to observe detrusor overactivity (DO) objectively as a core symptom of an overactive bladder. SHRs (<I>n</I> = 6) showed the features of overactive bladder syndrome during urodynamic study, especially DO during the filling phase. After injection of the nonselective sympathetic blocking agent labetalol, DO disappeared in 3 of 6 SHRs (50%). DO frequency decreased from 0.98 ± 0.22 min<SUP>−1</SUP> to 0.28 ± 0.19 min<SUP>−1</SUP> (<I>p</I> < 0.01), and DO pressure decreased from 3.82 ± 0.57 cm H<SUB>2</SUB>O to 1.90 ± 0.86 cm H<SUB>2</SUB>O (<I>p</I> < 0.05). This suggests that the DO originating from the overactive parasympathetic nervous system is attenuated by the nonselective blocking of the sympathetic nervous system. The detailed mechanism behind this result is still not known, but parasympathetic overactivity seems to require overactive sympathetic nervous system activity in a kind of balance between these two systems. These findings are consistent with recent clinical findings suggesting that patients with idiopathic overactive bladder may have ANS dysfunction, particularly a sympathetic dysfunction. The search for newer and better drugs than the current anticholinergic drugs as the mainstay for overactive bladder will be fueled by our research on these sympathetic mechanisms. Further studies of this principle are required.</P>

Selection of Boxthorn(Lycium chinense Mill.) cultivars for organic cultivation and weed control effect of cover plants

Bo-Hee Lee,Jeong-Seok Seo,Deok-Sang Yun,Yeong-Chun Park,Jeong-Il Ju,Bong-Chun Lee,Hyun-Ho Kim,Seong-min Kim 한국약용작물학회 2013 한국약용작물학술대회 발표집 Vol.2013 No.05

Case Report : A Case of Atypical Adenomatous Hyperplasia of Larger Than 2 cm

( Bo Mi Park ),( Min Ji Cho ),( Hyun Seok Lee ),( Dong Il Park ),( Myoung Rin Park ),( Ju Ock Kim ),( Jeong Eun Lee ),( Choong Sik Lee ),( Sung Soo Jung ) 대한결핵 및 호흡기학회 2013 Tuberculosis and Respiratory Diseases Vol.74 No.6

Atypical adenomatous hyperplasia (AAH) has been considered to be a precursor lesion of bronchioloalveolar carcinoma (BAC) and pulmonary adenocarcinoma. It usually coexists with BAC and/or an adenocarcinoma. Chest computed tomography reveals multiple well-defined nodules with ground-glass opacity. Usually, AAH does not exceed 10 mm in size. AAH with extensive involvement on one side of the lung field or one that is larger than 2 cm has not been previously reported. We herein report a case of a 71-year-old nonsmoking female with lung AAH of larger than 2 cm.

Effects of Triclosan on Neural Stem Cell Viability and Survival

( Bo Kyung Park ),( Edson Luck T. Gonzales ),( Sung Min Yang ),( Minji Bang ),( Chang Soon Choi ),( Chan Young Shin ) 한국응용약물학회 2016 Biomolecules & Therapeutics(구 응용약물학회지) Vol.24 No.1

Triclosan is an antimicrobial or sanitizing agent used in personal care and household products such as toothpaste, soaps, mouthwashes and kitchen utensils. There are increasing evidence of the potentially harmful effects of triclosan in many systemic and cellular processes of the body. In this study, we investigated the effects of triclosan in the survivability of cultured rat neural stem cells (NSCs). Cortical cells from embryonic day 14 rat embryos were isolated and cultured in vitro. After stabilizing the culture, triclosan was introduced to the cells with concentrations ranging from 1 μM to 50 μM and in varied time periods. Thereafter, cell viability parameters were measured using MTT assay and PI staining. TCS decreased the cell viability of treated NSC in a concentration- dependent manner along with increased expressions of apoptotic markers, cleaved caspase-3 and Bax, while reduced expression of Bcl2. To explore the mechanisms underlying the effects of TCS in NSC, we measured the activation of MAPKs and intracellular ROS. TCS at 50 μM induced the activations of both p38 and JNK, which may adversely affect cell survival. In contrast, the activities of ERK, Akt and PI3K, which are positively correlated with cell survival, were inhibited. Moreover, TCS at this concentration augmented the ROS generation in treated NSC and depleted the glutathione activity. Taken together, these results suggest that TCS can induce neurodegenerative effects in developing rat brains through mechanisms involving ROS activation and apoptosis initiation.

The IDE overexpressed hyperglycemic GE mice

Sung bin Cho,Kwang Je Kim,Shim Sun Bo,Ohseok Kwon,Su-Hae Lee,Hee Jung Shin,Young Min Cho,Hae Deun Kim,Taehyun Ahn,Dong Hoon Yu,Myeon-Woo Chung 한국실험동물학회 2016 한국실험동물학회 학술발표대회 논문집 Vol.2016 No.2

Effects of Makgeolli and Makgeolli precipitate on Hepatotoxicity and Serum Lipid Content in Rats

Bo Kyung Kim(김보경),Min Sook Kang(강민숙),Myeong-Jeong Jeon(전명정),Sang-Hyeon Lee(이상현),Mihyang Kim(김미향) 한국생명과학회 2013 생명과학회지 Vol.23 No.2

본 연구에서는 막걸리 원액의 간 조직에 미치는 영향을 검토하기 위해 에탄올을 대조군으로 하여 막걸리를 투여한 실험동물의 간 지표 효소 활성을 비교 분석하였고, 다음으로 실험동물에 사염화탄소로 간 손상을 일으킨 후 알코올 이외의 성분에 의한 막걸리 효능을 검토하기 위해 알코올 성분을 제거하고 얻은 침전물을 투여하여 혈청 중의 효소활성 및 지질농도분석을 통하여 간 손상에 미치는 영향을 검토하였다. 실험기간 중의 건강상태를 나타내는 지표라 할 수 있는 실험 동물의 체중 증가량은 에탄올 투여군은 대조군 및 막걸리 투여군에 비하여 전체적으로 낮게 나타났다. 한편 장기 무게에서는 간 조직의 중량이 에탄올 투여에 의해 유의적으로 감소하는 결과가 나타났으나 막걸리 투여에 의한 감소는 보이지 않았다. 혈청 AST 및 ALT의 경우 막걸리 투여에 의해 오히려 그 활성이 감소하였으나, 에탄올 투여에 의해 그 활성이 증가하여 알코올 자체가 간 조직의 병변에 영향을 준 것으로 추측된다. 혈중 콜레스테롤 함량은 에탄올 투여군에서 혈중 콜레스테롤 함량이 증가하였고, 막걸리 투여군인 MG3군은 동량의 에탄올 투여군에 비해서 콜레스테롤 함량이 감소하는 결과가 나타나, 막걸리 중의 알코올 이외의 성분에 의해 콜레스테롤 증가를 감소시켰음을 알 수 있었다. 혈청 중 HDL-cholesterol 함량은 막걸리 투여로 인해 유의적으로 증가하여 막걸리가 혈중 HDL-chloesterol을 상승시키는 효과가 있는 것으로 나타났다. 사염화탄소에 의해 유도된 간 독성에 막걸리 침전물이 미치는 영향을 검토하였다. 정상군의 AST 및 ALT활성에 비해 사염화탄소에 의하여 간 독성이 유발된 CCl4군의 혈중 AST 활성이 증가되었고, 생막걸리 침전물을 투여한 경우, AST 및 ALT 활성이 정상군의 수준까지 회복되지는 못하였으나, 사염화탄소 투여군에 비해 유의적으로 감소하는 결과가 나타났다. 사염화탄소 투여에 의해 증가한 혈중 콜레스테롤 함량은 생막걸리 침전물 투여에 의해 정상군 수준으로 감소하였으나, 가열막걸리의 침전물을 투여한 경우 정상군 수준으로 회복되지 못하였다. HDL-cholesterol은 생막걸리 침전물 투여에 의해 사염화탄소 투여군 보다 증가하였다. 중성지질의 경우 사염화탄소 투여에 의해 증가되었으나 생막걸리 침전물 투여로 인해 감소하였다. 이상의 연구 결과 사염화탄소 투여로 상승된 혈청 지질은 막걸리 침전물을 투여한 경우 저하되었으며, 특히 가열막걸리보다 생막걸리 침전물을 투여했을 때 지질대사 개선효과가 우수한 것으로 나타났다. This study was conducted to investigate the effect of Makgeolli and Makgeolli precipitate on hepatotoxity and the serum lipid content in rats. First, we investigated the effect of Makgeolli and ethanol on the progress of alcoholic fatty liver. The effect of Makgeolli precipitate on carbon tetrachloride (CCl₄)- induced hepatotoxicity in the rats was then studied. Indicators of the health status of the experimental period, the body weight gain in ethanol-treated group tended to be lower than those in the control and the Makgeolli-treated groups. The weight of the liver tissue decreased significantly following the administration of ethanol. However, this was not seen following the administration of Makgeolli. The activities of serum aspartate transaminase (AST) and alanine transaminase (ALT) were decreased in the Makgeolli group compared to the ethanol group. Serum cholesterol concentrations increased in the ethanol group, but decreased in the Makgeolli-treated group to an equal volume of the ethanol-treated group. The serum HDL-cholesterol content was significantly higher in the Makgeolli group than in the ethanol group. Analysis of the impact of the Makgeolli precipitate on toxicity induced by CC This study was conducted to investigate the effect of Makgeolli and Makgeolli precipitate on hepatotoxity and the serum lipid content in rats. First, we investigated the effect of Makgeolli and ethanol on the progress of alcoholic fatty liver. The effect of Makgeolli precipitate on carbon tetrachloride (CCl₄)- induced hepatotoxicity in the rats was then studied. Indicators of the health status of the experimental period, the body weight gain in ethanol-treated group tended to be lower than those in the control and the Makgeolli-treated groups. The weight of the liver tissue decreased significantly following the administration of ethanol. However, this was not seen following the administration of Makgeolli. The activities of serum aspartate transaminase (AST) and alanine transaminase (ALT) were decreased in the Makgeolli group compared to the ethanol group. Serum cholesterol concentrations increased in the ethanol group, but decreased in the Makgeolli-treated group to an equal volume of the ethanol-treated group. The serum HDL-cholesterol content was significantly higher in the Makgeolli group than in the ethanol group. Analysis of the impact of the Makgeolli precipitate on toxicity induced by CCl₄ in the liver showed that the CCl₄ treatment significantly increased the activities of serum ALT and AST. However, the levels of cholesterol and triglyceride in serum were decreased. The CCl₄ treatment increased the activities of AST and ALT. However, the raw Makgeolli precipitate decreased their activities. Moreover, raw Makgeolli precipitate significantly reduced the CCl₄-induced elevation of serum lipids more than heated Makgeolli precipitate. These results suggest that raw Makgeolli precipitate may exert a protective effect against CCl₄-induced liver injury by preventing lipid peroxidation. in the liver showed that the CCl₄ treatment significantly increased the activities of serum ALT and AST. However, the levels of cholesterol and triglyceride in serum were decreased. The CCl₄ treatment increased the activities of AST and ALT. However, the raw Makgeolli precipitate decreased their activities. Moreover, raw Makgeolli precipitate significantly reduced the CCl₄-induced elevation of serum lipids more than heated Makgeolli precipitate. These results suggest that raw Makgeolli precipitate may exert a protective effect against CCl₄-induced liver injury by preventing lipid peroxidation.

Concordance with artificial intelligence and multidisciplinary tumor board for lung cancer

( Min-Seok Kim ),( Bo-Gun Kho ),( Chul-Kyu Park ),( In-Jae Oh ),( Young-Chul Kim ),( Seok Kim ),( Ju-Sik Yun ),( Sang-Yun Song ),( Kook-Joo Na ),( Jae-Uk Jeong ),( Mee Sun Yoon ),( Sung-Ja Ahn ),( Sae 대한결핵 및 호흡기학회 2019 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.127 No.0

Background: IBM Watson for Oncology (WFO) is a cognitive computing system which helps physicians quickly identify key information from extensive medical records and explore best treatment option. We evaluated the level of agreement between WFO and multidisciplinary team (MDT) for lung cancer. Methods: From January to December 2018, newly diagnosed lung cancer cases in Chonnam National University Hwasun Hospital were retrospectively examined using WFO version 18.4 according to four treatment categories; surgery, radiotherapy, chemoradiotherapy, and palliative care - including chemotherapy, targeted therapy, immunotherapy. Treatment recommendations were considered concordant if the MDT recommendations were designated ‘recommended’ by WFO. The concordance between MDT and WFO was assessed by Cohen’s kappa value. Results: Total 405 (male 340, female 65) cases with different histology (adenocarcinoma 157, squamous cell carcinoma 132, small cell carcinoma 94, the others 22 cases) were enrolled in this study. The overall concordance rate between MDT and WFO was 92.4% (k=0.881, p<0.001). The strength of agreement was very good in stage 4 NS CLC (100%, k=1.000) and extensive disease SCLC (100%, k=1.000). The concordance was good in stage 1 NSCLC (92.4%, k=0.855) and moderate in stage 3 NSCLC (80.8%, k=0.622). But that was relatively low in stage 2 NSCLC (83.3%, k=0.556) and limited disease SCLC (84.6%, k=0.435). The discordant cases occurred in surgery (7/57, 12.3%), radiotherapy (2/12, 16.7%), and chemoradiotherapy (15/129, 11.6%). There was no discordance case in metastatic disease. Conclusion: Treatment recommendations made by WFO and MDT were different according to tumor stage, and WFO could be clinically useful in metastatic stage lung cancer. However patient-doctor relationship and shared decision making might be more important than artificial intelligence in non-metastatic stage.