• Title/Summary/Keyword: Biological studies

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Cell-Based Assay Design for High-Content Screening of Drug Candidates

  • Nierode, Gregory;Kwon, Paul S.;Dordick, Jonathan S.;Kwon, Seok-Joon
    • Journal of Microbiology and Biotechnology
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    • v.26 no.2
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    • pp.213-225
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    • 2016
  • To reduce attrition in drug development, it is crucial to consider the development and implementation of translational phenotypic assays as well as decipher diverse molecular mechanisms of action for new molecular entities. High-throughput fluorescence and confocal microscopes with advanced analysis software have simplified the simultaneous identification and quantification of various cellular processes through what is now referred to as high-content screening (HCS). HCS permits automated identification of modifiers of accessible and biologically relevant targets and can thus be used to detect gene interactions or identify toxic pathways of drug candidates to improve drug discovery and development processes. In this review, we summarize several HCS-compatible, biochemical, and molecular biology-driven assays, including immunohistochemistry, RNAi, reporter gene assay, CRISPR-Cas9 system, and protein-protein interactions to assess a variety of cellular processes, including proliferation, morphological changes, protein expression, localization, post-translational modifications, and protein-protein interactions. These cell-based assay methods can be applied to not only 2D cell culture but also 3D cell culture systems in a high-throughput manner.

Current Update on Transcranial Direct Current Stimulation as Treatment for Major Depressive Disorder (주요우울장애의 치료로서 경두개 직류자극술(Transcranial Direct Current Stimulation)의 현재)

  • Lee, Seung-Hoon;Kim, Yong-Ku
    • Korean Journal of Biological Psychiatry
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    • v.25 no.4
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    • pp.89-100
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    • 2018
  • Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation method that delivers 1-2 mA of current to the scalp. Several clinical studies have been conducted to confirm the therapeutic effect of major depressive disorder (MDD) patients with tDCS. Some studies have shown tDCS's antidepressant effect, while the others showed conflicting results in antidepressant effects. Our aim of this review is to understand the biological bases of tDCS's antidepressant effect and review the results of studies on tDCS's antidepressant effect. For the review and search process of MDD treatment using tDCS, the US National Library of Medicine search engine PubMed was used. In this review, we discuss the biological mechanism of tDCS's antidepressant effect and the existing published literature including meta-analysis, systematic review, control trial, open studies, and case reports of antidepressant effects and cognitive function improvement in patients with MDD are reviewed. We also discuss the appropriate tDCS protocol for MDD patients, factors predictive of response to tDCS treatment, the disadvantages of tDCS in MDD treatment, and side effects.

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Analysis of Studies on Guibi-tang(Guipitang) for Fundamental Establishment of Evidence Based Medicine(EBM) (EBM 기반구축을 위한 귀비탕(歸脾湯) 연구 문헌 분석)

  • Kim, Jung-Hoon;Lee, Jun-Kyoung;Ha, Hye-Kyoung;Seo, Chang-Seob;Lee, Mi-Young;Lee, Ho-Young;Jung, Da-Young;Lee, Nam-Hun;Lee, Jin-Ah;Huang, Dae-Sun;Shin, Hyun-Kyoo
    • Journal of Oriental Neuropsychiatry
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    • v.20 no.3
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    • pp.205-216
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    • 2009
  • Objectives : To establish the fundaments for EBM of Traditional Korean Medicine, the papers on Guibi-tang(Guipitang) which were frequently used in medical institutions of Traditional Korean Medicine were analyzed through researching domestic and international literatures. Methods : The papers were classified by the year of publishment, by experimental methods, by laboratory animals used in biological experiment and by the kinds of studies on biological efficacy. Results : Of total 39 papers were registered in domestic journals. Since 1980, publishments of papers have continuously increased. The papers on biological studies were 34 volumes, clinical studies were 5 volumes. Biological studies mainly showed the effects of anti-stress, anti-oxidant, hemostasis, anti-osteoporosis, gastroprotection, reproductive ability, brain cell activity, radioprotection. And clinical studies showed improvements of fearful throbbing, memory and orientation, insomnia, vericose vein, schizophrenia. Conclusions : Guibi-tang(Guipitang) could be used to fortify the spleen, nourish the heart and then control the blood. However biological studies need to be conducted in accordance with clinical study and further clinical studies on randomized controlled trials should be proceeded.

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Biological Determinism as Dominant Ideology (지배이데올로기로서 생물학결정론)

  • Kum, In-Sook
    • Journal of Science and Technology Studies
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    • v.8 no.1
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    • pp.131-158
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    • 2008
  • With the intention of revealing that biological determinism is not the truth verified as scientific facts but ideology which conceals or reproduces the white male-centered social order of western capitalism, this article considered the peculiarities of human being from a perspective of cultural anthropology and examined the social contexts of biological determinism. From these studies, it found that the human is not born, but rather become, that biological determinism, from phrenology and social evolutionism to social biology and IQ determinism, emerged for the breakthrough of crisis in which a number of disclosed social contradictions drove the established ruling order into a collapse, and that it cannot but function as dominant ideology rationalizing racial, ethnic, class and gender discriminations. Hence, bioscience must overcome biological determinism in order to be the hope of both all people and all sort of life. But it is without the transformation of unequal structures that the problem of biological determinism cannot be surmountable at all.

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Synthesis and Biological Studies of Catechol Ether Type Derivatives as Potential Phosphodiesterase (PDE) IV Inhibitors

  • Rhee, Chung K.;Kim, Jong-Hoon;Suh, Byung-Chul;Xiang, Myung-Xik;Youn, Yong-Sik;Bang, Won-Young;Kim, Eui-Kyung;Shin, Jae-Kyu;Lee, Youn-Ha
    • Archives of Pharmacal Research
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    • v.22 no.2
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    • pp.202-207
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    • 1999
  • New series of catechol ether type derivatives 5, 6 have been synthesized and applied to biological tests. Even though it is ap preliminary data, some of our target molecules show the promising result against PDE IV inhibition. SAR and biological studies with studies with synthetic compounds will be discussed in detail.

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