• Title/Summary/Keyword: Hwang Jun/Hwang Chun

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Cloning and Sequencing of the ${\beta}-Amylase$ Gene from Paenibacillus sp. and Its Expression in Saccharomyces cerevisiae

  • Jeong, Tae-Hee;Kim, Hee-Ok;Park, Jeong-Nam;Lee, Hye-Jin;Shin, Dong-Jun;Lee, Hwang-Hee Blaise;Chun, Soon-Bai;Bai, Suk
    • Journal of Microbiology and Biotechnology
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    • v.11 no.1
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    • pp.65-71
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    • 2001
  • A gene from Paenibacillus sp. KCTC 8848P encoding ${\beta}-amylase$ was cloned and expressed in Escherichia coli. The Paenibacillus ${\beta}-amylase$ gene cosisted of a 2,409-bp open reading frame without a translational stop codon, encoding a protein of 803 amino acids. The presumed ribosime-binding site, GGAGG, was located 10 bp upstream from the TTG initiation codon. The deduced amino acid sequence of the ${\beta}-amylase$ gene had a 95% similarity to the ${\beta}-amylase$ of Bacillus firmus. The ${\beta}-amylase$ gene was introduced into wild-type strains of Saccharomyces cerevisiae using a linearized yeast integrating vector containing a geneticin resistance gene and its product was secreted into the culture medium.

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A Case Report of hyperhidrosis on the head treated with Revised Bojungikgi-tang (보중익기탕가미방(補中益氣湯加味方)으로 호전된 두한증(頭汗證) 2례(例))

  • Nam, Tae-Heung;Yang, Su-Young;Byeon, Jun-Seop;Hwang, Ji-Ho;Ahn, Jeong-Jo;Lee, Yong-Gu;Park, Yang-Chun
    • Journal of Haehwa Medicine
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    • v.16 no.2
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    • pp.349-353
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    • 2007
  • Hyperhidrosis is a condition characterized by excessive sweating. It can be generalized or focal. Generalized hyperhidrosis involves the entire body and is usually part of an underlying condition, most often an infectious, endocrine or neurologic disorder. Focal hyperhidrosis is idiopathic, occurring in otherwise healthy people. The condition carries a substantial psychological and social burden, since it interferes with daily activities. We treated two male patients who had hyperhidrosis on the head. In the point of Differentiation of Syndrom(辨證), these subjects were diagnosed as Bi-Wi-Gi-Her (Pi-Wei-Qi-Xu 脾胃氣虛) and was administered revised Bojungikgi-tang (reserved Buzhongyiqi-tang, 補中益氣湯加味方). All of two cases had anorexia, dyspepsia, fatigue. After treatment hyperhidosis and other symptoms improved.

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Cloning and Expression of a Paenibacillus sp. Neopullulanase Gene in Saccharomyces cerevisiae Producing Schwanniomyces occidentalis Glucoamylase

  • Kim, Hyo-Jeong;Park, Jeong-Nam;Kim, Hee-Ok;Shin, Dong-Jun;Chin, Jong-Eon;Blaise Lee, Hwang-Hee;Chun, Soon-Bai;Bai, Suk
    • Journal of Microbiology and Biotechnology
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    • v.12 no.2
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    • pp.340-344
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    • 2002
  • A gene, npl, encoding neopullulanase from Paenibacillus sp. KCTC 8848P was cloned and expressed in Escherichia coli. It consisted of an open reading frame of 1,530 bp for a protein that consisted of 510 amino acids with a molecular weight of 58,075 Da. The deduced amino acid sequence of the neopullulanase gene had $92\%$ identity with the neopullulanase of Bacillus polymyxa. The npl gene was also expressed in Saccharomyces cerevisiae secreting Schwanniomyces occidentalis glucoamylase (GAM1) under the control of the yeast actin gene (ACT1) promoter. Secretion of the neopullulanase was directed by the yeast mating pheromone ${\alpha}$ -factor ($MF{\alpha}1$) prepro region. Enzyme assays confirmed that co-expression of npl and GAM1 enhanced starch and pullulan degradation by S. cerevisiae.

Numerical Simulation of Tsunami Impact Load Using 3-Dimensional Particle Method (파랑 충격하중에 관한 3차원 입자법 수치모사)

  • Kim, Young-Hun;Jung, Sung-Jun;Lee, Byung-Hyuk;Hwang, Sung-Chul;Park, Jong-Chun
    • Journal of Ocean Engineering and Technology
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    • v.21 no.6
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    • pp.42-46
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    • 2007
  • The impact of a single wave generated by a dam break with a tall structure is modeled with a three-dimensional version of the Moving particle semi-implicit (MPS) method. The particle method is more feasible and effective than methods based on grid connection problems involving violent free surface motions. In the present study, the Tsunami impact load and the change of longitudinal velocity component around the structure, which are obtained from the numerical simulation, are compared to those from experiments.

A Survey on the Current Working Conditions and Job Satisfaction on Aquatic Therapy Performed by Physical Therapists

  • Oh, Sejun;Jeon, Jin Yeong;Lee, Ji Hye;Hwang, Byong Yong;Yoon, BumChul;Nam, Hyoung Chun;Yeom, Jun Woo
    • The Journal of Korean Physical Therapy
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    • v.31 no.1
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    • pp.40-48
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    • 2019
  • Purpose: This study assessed the current working conditions and job satisfaction on aquatic therapy performed by physical therapists in South Korea. Methods: A total of 139 (managers: 53, staff: 86) physical therapists participated in this survey (90 questionnaires) and the data were analyzed using the SPSS 21.0 Windows. Results: The retention conditions of aquatic therapy facilitation was high in the rehabilitation centers (or disabled living facilities) and rehabilitation hospitals. On the other hand, there were regional variations. The physical therapists in this field were likely to have limitations or restrictions of professional aquatic therapy education. The subjects showed a tendency for a career interruption during their fifth working year. The overall job satisfaction on aquatic therapy of physical therapists was high (managers: 94.3%, staff: 95.3%, p=0.276), but the work intensity was higher than the other parts of physical therapy and the relative reward was comparatively low (managers: 60.3%, staff: 66.3%, p=0.865). Conclusion: Based on this study, the current working conditions regarding aquatic therapy by physical therapists were assessed. These results will help enhance aquatic therapy and/or in aquatic therapy facilitation.

Tschimganidine reduces lipid accumulation through AMPK activation and alleviates high-fat diet-induced metabolic diseases

  • Min-Seon Hwang;Jung-Hwan Baek;Jun-Kyu Song;In Hye Lee;Kyung-Hee Chun
    • BMB Reports
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    • v.56 no.4
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    • pp.246-251
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    • 2023
  • Obesity increases the risk of mortality and morbidity because it results in hypertension, heart disease, and type 2 diabetes. Therefore, there is an urgent need for pharmacotherapeutic drugs to treat obesity. We performed a screening assay using natural products with anti-adipogenic properties in 3T3-L1 cells and determined that tschimganidine, a terpenoid from the Umbelliferae family, inhibited adipogenesis. To evaluate the anti-obesity effects of tschimganidine in vivo. Mice were fed either a normal chow diet (NFD) or a high-fat chow diet (HFD) with or without tschimganidine for 12 weeks. Treatment with tschimganidine decreased lipid accumulation and adipogenesis, accompanied by reduced expression of adipogenesis and lipid accumulation-related factors. Tschimganidine significantly increased the phosphorylation of AMP-activated protein kinase (AMPK) and decreased that of AKT. Depletion of AMPK relieved the reduction in lipid accumulation resulting from tschimganidine treatment. Moreover, tschimganidine administration drastically reduced the weight and size of both gonadal white adipose tissue (WAT) and blood glucose levels in high-fat diet-induced obese mice. We suggest that tschimganidine is a potent anti-obesity agent, which impedes adipogenesis and improves glucose homeostasis. Tschimganidine can then be evaluated for clinical application as a therapeutic agent.

Hemostatic Dysfunction in a Dog with Mammary Gland Carcinoma

  • Rankyung Jung;Hyeona Bae;ARom Cho;Young Ju Kim;Yeseul Jun;Minji Kim;Sumin Cha;Min-Jeong Kang;Tae-Sung Hwang;Hee-Chun Lee;Kyu-Woan Cho;Dong-In Jung;Dae Young Kim;DoHyeon Yu
    • Journal of Veterinary Clinics
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    • v.39 no.6
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    • pp.373-377
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    • 2022
  • Hypercoagulability is the most common coagulopathy seen in dogs with neoplasia, whereas a hypocoagulable state is relatively rare. A 16-year-old spayed female miniature Schnauzer presented with bilateral epistaxis, bilateral hindlimb swelling, and lameness. Previously, the dog was diagnosed with intermediate grade solid carcinoma after mastectomy, and then showed generalized ecchymoses on the abdomen and bilateral hindlimbs on presentation. Laboratory tests revealed a hypocoagulable state, including thrombocytopenia, hypofibrinogenemia, and delayed prothrombin and activated partial thromboplastin time. Thromboelastography demonstrated a prolonged K time with a decreased alpha angle and low maximal amplitude, reflecting a decrease in clot strength. The hypocoagulable state of disseminated intravascular coagulopathy was speculated based on the presence of an underlying tumor, clinical symptoms, and laboratory results of the hypocoagulable state. This case shows the incidence of hemostatic dysfunction as a paraneoplastic syndrome in a dog with mammary gland carcinoma.

Design of a LTCC Front End Module with Power Detecting Function (전력 검출 기능을 포함하는 LTCC 프런트 엔드 모듈 설계)

  • Hwang, Mun-Su;Koo, Jae-Jin;Koo, Ja-Kyung;Lim, Jong-Sik;Ahn, Dal;Yang, Gyu-Yeol;Kim, Jun-Chul;Kim, Dong-Su;Park, Ung-Hee
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.19 no.8
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    • pp.844-853
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    • 2008
  • This paper describes the design of a FEM(Front End Module) having power detection function for mobile handset application. The designed FEM consists of a MMIC(Monolithic Microwave Integrated Circuits) power amplifier chip, SAW Tx filter and duplexer, diode power detector and stripline matching circuit. An LTCC(Low Temperature Co-fired Ceramics) technology is adopted for miniaturized FEM. The frequency band is $824{\sim}869$ MHz which is the uplink Tx band of the CDMA mobile system. The size of designed FEM is $7.0{\times}5.5{\times}1.5\;mm^3$, which is an ultra-small size even though the power detector circuit is included. All sub-components of FEM have been developed and measured in advance before being integrated into FEM. The measured output power and gain are 27 dBm and 27 dB, respectively. In addition, the measured ACPR characteristics are 46.59 dBc and 55.5 dBc at 885 kHz and 1.98 MHz offset, respectively.

Electroacupuncture for Treatment of Primary Dysmenorrhea: Systematic Review of Randomized Controlled Trials (원발성 월경통의 전침 치료 연구에 관한 체계적 문헌 고찰)

  • Park, Nam-Chun;Kang, Na-Hoon;Yoo, Eun-Sil;Lee, Jin-Wook;Yoon, Jun-Geol;Lee, Jin-Moo;Lee, Chang-Hoon;Jang, Jun-Bok;Hwang, Deok-Sang
    • The Journal of Korean Obstetrics and Gynecology
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    • v.30 no.2
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    • pp.81-92
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    • 2017
  • Objectives: This review aims to report the efficacy and safety of electroacupuncture in the treatment of primary dysmenorrhea. Methods: We searched for randomized controlled studies (RCTs) using electroacupuncture on primary dysmenorrhea up to Dec 2016. The following databases were searched : OASIS, PubMED, EMBASE, CENTRAL. The results of the studies were analyzed and the risk of bias was assessed. Results: Five studies were included in this review. In most studies, the effect of electroacupuncture at Sameumgyo (SP6) was better than that of electroacupuncture at Hyeonjong (GB39), nonacupoint and no intervention about Visual analog scale (VAS), Verbal rating scale (VRS) and Retrospective symptom scale (RSS). But there were no significant effects on Resistance Index (RI) and S/D ratio (the ratio between peak systolic to end-diastolic flow velocity in uterine arteries). Serous adverse events were not reported. Conclusions: This review shows that electroacupuncture is effective on primary dysmenorrhea with no serious adverse events.

Validation of Human HazChem Array Using VOC Exposure in HL-60 Cells

  • Oh, Moon-Ju;Kim, Seung-Jun;Kim, Jun-Sub;Kim, Ji-Hoon;Park, Hye-Won;Kim, Youn-Jung;Ryu, Jae-Chun;Hwang, Seung-Yong
    • Molecular & Cellular Toxicology
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    • v.4 no.1
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    • pp.45-51
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    • 2008
  • Volatile Organic Compounds (VOCs) have been shown to cause nervous system disorders through skin contact or respiration, and also cause foul odors even at low densities in most cases. Also, as a compound itself, VOCs are directly harmful to the environment and to the human body, and may participate in photochemical reactions in air to create secondary pollutants. In this study, HL-60 cells were treated with volatile organic compounds, including ethylbenzene and trichloroethylene, at a value of $IC_50$. Then, the in house-prepared Human HazChem arrayer was utilized in order to compare the gene expression between the two VOCs. After hybridization, 8 upregulated genes and 8 downregulated genes were discovered in the HazChem array. The upregulated genes were identified as SG15, TNFSF10, PRNP, ME1, NCOA4, SRXN1, TXNRD1, and XBP1. The downregulated genes were identified as MME, NRF1, PRARBP, CALCA, CRP, BAX, C7 or f40, and FGFR1. Such results were highly correlated with the quantitative RT-PCR results. The majority of the 16 genes were related with the characteristics of VOCs, including respiratory mechanism, apoptosis, and carcinogenesis-associated genes. Our data showed that our human HazChem array can be used to monitor hazardous materials via gene expression profiling.