• Title/Summary/Keyword: Laboratory study

검색결과 19,030건 처리시간 0.052초

Clinical Efficacy of Oclacitinib and Lokivetmab in Dogs with Canine Atopic Dermatitis

  • Lee, Sora;Yun, Taesik;Koo, Yoonhoi;Chae, Yeon;Lee, Dohee;Choi, Dongjoon;Choi, Yujin;Kim, Hakhyun;Yang, Mhan-Pyo;Kang, Byeong-Teck
    • 한국임상수의학회지
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    • 제38권3호
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    • pp.127-134
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    • 2021
  • Canine atopic dermatitis (CAD) is a genetically predisposed inflammatory and pruritic skin disease presenting characteristic clinical features in dogs. Despite oclacitinib and lokivetmab being commonly used, no study has compared their efficacies in CAD. This study aimed to compare the efficacy, safety, and control of CAD-associated pruritus and skin lesions between oclacitinib and lokivetmab. It also investigated whether switching to lokivetmab from oclacitinib or prednisolone had any benefits. Twenty-five client-owned dogs, newly diagnosed with CAD, were allocated to the oclacitinib (n = 20) and lokivetmab (n = 5) groups and administered oclacitinib (0.4-0.6 mg/kg orally, twice daily for 14 days, then once daily) and lokivetmab (2 mg/kg subcutaneously, every month) for 8 weeks, respectively. The switching group included five dogs previously administered with oclacitinib (n = 4) or prednisolone (n = 1) who were switched to lokivetmab directly at the start of the study. The pruritus visual analog scale (PVAS) and Canine Atopic Dermatitis Extent and Severity Index (CADESI-04) values were surveyed at weeks 0, 4, and 8. Oclacitinib and lokivetmab significantly reduced the PVAS and CADESI-04 scores. Switching from oclacitinib or prednisolone to lokivetmab maintained the severity of pruritus (4 weeks: p = 0.068; 8 weeks: p = 0.068) and dermatitis (4 weeks: p = 0.144; 8 weeks: p = 0.068) at the levels measured at baseline. Thus, both oclacitinib and lokivetmab reduced CAD-associated pruritus by a similar degree. Switching to lokivetmab maintained the severity of pruritus and dermatitis at the same level as the previous treatment.

Study of MgSrO and MgCaO thin films as protective layers for PDPs

  • Matulevich, Y.T;Moon, Sung-Hwan;Choi, Jong-Seo;Zang, Dong-Sik
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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    • pp.181-183
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    • 2009
  • Comparative study of the dependence of the firing voltage of MgSrO and MgCaO protective layers on chemical composition was carried out. It was observed that the firing voltage increases when CaO/MgO or SrO/MgO ratio increases.

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Novel artesunate-metformin conjugate inhibits bladder cancer cell growth associated with Clusterin/SREBP1/FASN signaling pathway

  • Peiyu Lin;Xiyue Yang;Linghui Wang;Xin Zou;Lingli Mu;Cangcang Xu;Xiaoping Yang
    • The Korean Journal of Physiology and Pharmacology
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    • 제28권3호
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    • pp.219-227
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    • 2024
  • Bladder cancer remains the 10th most common cancer worldwide. In recent years, metformin has been found to have potential anti-bladder cancer activity while high concentration of IC50 at millimolar level is needed, which could not be reached by regular oral administration route. Thus, higher efficient agent is urgently demanded for clinically treating bladder cancer. Here, by conjugating artesunate to metformin, a novel artesunate-metformin dimer triazine derivative AM2 was designed and synthesized. The inhibitory effect of AM2 on bladder cancer cell line T24 and the mechanism underlying was determined. Anti-tumor activity of AM2 was assessed by MTT, cloning formation and wound healing assays. Decreasing effect of AM2 on lipogenesis was determined by oil red O staining. The protein expressions of Clusterin, SREBP1 and FASN in T24 cells were evaluated by Western blotting. The results show that AM2 significantly inhibited cell proliferation and migration at micromolar level, much higher than parental metformin. AM2 reduced lipogenesis and down-regulated the expressions of Clusterin, SREBP1 and FASN. These results suggest that AM2 inhibits the growth of bladder cancer cells T24 by inhibiting cellular lipogenesis associated with the Clusterin/SREBP1/FASN signaling pathway.

중등학교 과학교육의 내실화방안에 대한 연구 (A study on the Program for Substantial Science Education in Secondary Schools Laboratory Experiment-Bared Science Teaching)

  • 조희형;이문원;조영신;한인숙
    • 한국과학교육학회지
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    • 제9권1호
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    • pp.75-89
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    • 1989
  • Secondary schools in Korea have been faced with several critical problems with regard to science education. Among them one of the most fundamental problems is associated with laboratory-based science education. There fore as a part of research project for the improvement of science education in secondary schools, this study had its abjectives to inquire into the following areas related to laboratory experiment. ${\circ}$Survey and analysis of theoretical backgrounds for science teaching focused on laboratory experiments. ${\circ}$Status survey of experiment-based science teaching in high schools. ${\circ}$Development of model for improving experiment-based science teaching. In order to fulfill these objectives this study used methods of eiterature review, survey, and interviews. The major finding are as follows : ${\circ}$Some topic for laboratory experiments as oppeared in the textbooks are not appropriate in the light of sience curricular operations in high schools. ${\circ}$In some schools equipments and facilities of school laboratories are for from sufficiency. ${\circ}$Laboratory experiments are not financially supportel for ideal science teach in both middle schools and high schools. These are not on exhaustive list of findings from this study More finding and teaching model for improvement of science education are also described in this paper.

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Comparison of Adventitious Shoot Formation in Petiole Explant Cultures of 20 Cultivars of Catharanthus roseus

  • Lee, Soo-Young;Park, Pil-Son;Chung, Hwa-Jee;In, Dong-Soo;Park, Dong-Woog;Jang R. Liu
    • Journal of Plant Biotechnology
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    • 제5권1호
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    • pp.59-61
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    • 2003
  • Petiole explants from 20 cultivars of Catharanthus roseus were cultured on various shoot-inducing media to assess their competence for adventitious shoot formation. After eight weeks of culture on Murashige and Skoog' s medium supplemented with 4.4 $\mu\textrm{m}$6-benzyladenine and 0.5 $\mu\textrm{m}$ $\alpha$-naphthaleneacetic acid, petiole explants from 'Cooler Icy Pink' exhibited the greatest frequency of adventitious shoot formation at 40%, which was followed by 'Little Bright Eye'. By comparing with a previous study on assessment of competence for adventitious shoot formation in hypocotyl explant cultures of various cultures, it is indicated that the relative degree of their competence among cultivars varies to the organ used for the source of explant. Excised adventitious shoots were readily rooted on half-strength MS basal medium. Regenerated plantlets were successfully transplanted to potting soil and grown to maturity in a greenhouse.

ICP-MS와 AAS를 이용한 체내 혈청 Cu, Zn 분석에 관한 연구 (Analysis of Copper, Zinc in Serum Using ICP-MS & AAS)

  • 이예진;김동엽;이고은;조영숙
    • 대한임상검사과학회지
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    • 제41권1호
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    • pp.31-36
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    • 2009
  • The exposure of human beings to toxic trace metals (Cu, Zn) continues to be an important public health issue and concern. This study was conducted to assess the exposure to trace metals (Cu, Zn) in the general Korean population by inductively coupled plasma mass spectrometry (ICP-MS) and Atomic absorption spectrometry (AAS). Serum samples were obtained from 40 healthy volunteers. Specimens were collected in special container and we applied sample processing to minimize contamination. We used ICP-MS and AAS to analyze simultaneously the concentration of metals including copper, zinc. Distribution of trace metal levels in the general healthy population showed lower values. The results in this study can provide background data for clinical studies associated with trace metal exposure in the korean population.

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