• 제목/요약/키워드: new drugs

검색결과 970건 처리시간 0.021초

전자약 연구개발 동향 (R&D Trends in Bioelectronic Medicines)

  • 김용희;정상돈;이성규;김혜진;변춘원;이정익;송기봉;강성원
    • 전자통신동향분석
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    • 제35권3호
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    • pp.98-110
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    • 2020
  • Precise detection and modulation of electrical signal patterns passing through peripheral nerves connecting organs and brainstems, referred to as electroceuticals or bioelectronic medicines, have emerged as a new type of treatments for neural disorders and chronic diseases. With the rapid advancements in neural interface technologies, electroceuticals are the focus of treatments for these disorders or diseases. In this paper, we introduced electroceuticals as an extension of neuromodulation for the treatment of chronic diseases, such as diabetes, rheumatoid arthritis, obesity, and bladder dysfunction, without side effects that are unavoidably elicited when conventional drugs are taken. Further, this paper reviewed the anatomy of the peripheral nervous system, treatment examples for chronic diseases, technological demands for peripheral nerve interfacing, global R&D programs and market trends for electroceuticals, and prospects on electroceuticals.

New understanding of glucocorticoid action in bone cells

  • Kim, Hyun-Ju
    • BMB Reports
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    • 제43권8호
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    • pp.524-529
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    • 2010
  • Glucocorticoids (GCs) are useful drugs for the treatment of various diseases, but their use for prolonged periods can cause severe side effects such as osteoporosis. GCs have a direct effect on bone cells, where they can arrest bone formation, in part through the inhibition of osteoblast. On the other hand, GCs potently suppress osteoclast resorptive activity by disrupting its cytoskeleton based on the inhibition of RhoA, Rac and Vav3 in response to macrophage colony-stimulating factor. GCs also interfere with microtubule distribution and stability, which are critical for cytoskeletal organization in osteoclasts. Thus, GCs inhibit microtubule-dependent cytoskeletal organization in osteoclasts, which, in the context of bone remodeling, further dampens bone formation.

Emerging roles of protein disulfide isomerase in cancer

  • Lee, Eunyoug;Lee, Do Hee
    • BMB Reports
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    • 제50권8호
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    • pp.401-410
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    • 2017
  • The protein disulfide isomerase (PDI) family is a group of multifunctional endoplasmic reticulum (ER) enzymes that mediate the formation of disulfide bonds, catalyze the cysteine-based redox reactions and assist the quality control of client proteins. Recent structural and functional studies have demonstrated that PDI members not only play an essential role in the proteostasis in the ER but also exert diverse effects in numerous human disorders including cancer and neurodegenerative diseases. Increasing evidence suggests that PDI is actively involved in the proliferation, survival, and metastasis of several types of cancer cells. Although the molecular mechanism by which PDI contributes to tumorigenesis and metastasis remains to be understood, PDI is now emerging as a new therapeutic target for cancer treatment. In fact, several attempts have been made to develop PDI inhibitors as anti-cancer drugs. In this review, we discuss the properties and diverse functions of human PDI proteins and focus on recent findings regarding their roles in the state of diseases including cancer and neurodegeneration.

Aptamers (nucleic acid ligands) for trypsin-like serine proteases

  • Gal, Sang-Wan;Jeong, Yong-Kee;Satoshi Nishikawa
    • Journal of Life Science
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    • 제12권1호
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    • pp.14-18
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    • 2002
  • Subpopulations of nucleotides that bind specifically to a variety of proteins have been isolated from a population of random sequence RNA/DNA molecules. Roughly one in $10^{13}$ random sequence RNA/DNA molecules folds in such a way as to create a specific binding site for small ligands. Since the development of in vitro selection procedure, more than 50 nucleic acid ligands (aptamers) have been isolated. These molecules are very useful for the study of molecular recognition between nucleic acid and protein/organic compound. In addition to these basic studies this method gives us a dream to produce new drugs against several diseases. We focused on several aptamers which specifically binds to trypsin-like serine proteases (thrombin, human neutrophil elastase, activated protein C and NS3 protease of human hepatitis C virus) and want to introduce their structural characteristics and some functions.

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Mirtazapine 사용후 정좌불능증(Akathisia)을 보인 환자 3례 (Three Cases of Mirtazapine Induced Akathisia)

  • 이승환;남민;정영조
    • 생물정신의학
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    • 제8권1호
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    • pp.162-166
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    • 2001
  • The mirtazapine is a relatively new antidepressant that has noradrenergic and specific serotonin antagonist action(NaSSAs). This has been known as one of the most safest drugs because of its few side effects. Until now, there have been only one case report that mirtazapine causes a EPS side effect(restless leg syndrome). But the peculiar mechanism of this drug makes it impossible to explain the exact reasons why the mirtazapine could induce EPS symptoms. Authors observed three cases of mirtazapine induced akathisia. We could not explain the phenomenon the other way except akathisia. So here we presents the three case of mirtazapine induced akathisia and a few possible hypothesis of this phenomenon.

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Clinical Geriatric Pharmacology

  • Sohn, Dong-Ryul
    • 한국응용약물학회:학술대회논문집
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    • 한국응용약물학회 1997년도 추계학술대회
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    • pp.87-91
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    • 1997
  • The range of disorders of old age that are thought potentially amenable to drug therapy is increasing. However, factors such as the growing costs of drug development and prescription, the novel pharmacological profile and enhanced potency of many new compounds, and the concerns that the elderly may have enhanced susceptibility to toxicity all make drug usage in the elderly patient an increasingly specialized topic. This is compounded by the high incidence of multiple disorders in frail elderly patients, and consequently the possibility of the long term use of several drugs, thus, adding the risk of drug interactions. Thus, clinical pharmacology in the elderly requires understanding of pharmacologic characteristic determinants of the physiological changes (Table 1) associated with aging in terms of pharmacokinetics and pharmacodynamics.

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Non-viral siRNA Delivery Systems

  • Won, Young-Wook;Jang, Yeon-Lim;Kim, Jin-Seok;Jeong, Ji-Hoon;Kim, Yong-Hee
    • Journal of Pharmaceutical Investigation
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    • 제40권spc호
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    • pp.119-129
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    • 2010
  • The emergence of new biological drugs based on RNA interference (RNAi) technology has been one of the most attractive issues in the field of gene therapy for years. However, the use of siRNA therapeutics in clinical settings is still limited due to lack of appropriate delivery systems for the highly charged macromolecular drug. In this review, recent development of major non-viral siRNA delivery systems, including lipid, liposome, polymer, and peptide-based carriers, is to be summarized.

Chemical Modification of Rupestonic Acid and Preliminarily In Vitro Antiviral Activity Against Influenza A3 and B Viruses

  • Yong, Jian-Ping;Aisa, Haji Akber
    • Bulletin of the Korean Chemical Society
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    • 제32권4호
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    • pp.1293-1297
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    • 2011
  • To improve the biological activities of rupestonic acid, 21 new rupestonic acid fatty ester derivatives (2a-2h) and aromatic ester derivatives (2i-2u) were synthesized and preliminarily evaluated for their anti-influenza activity in vitro by the national center for drug screening of China, using the Oseltamivir and Ribavirin as reference drugs. The results showed that 2l ($IC_{50}=0.5{\mu}mol/L$) exhibited potent anti-influenza $A_3$ viral activity among the synthesized compounds and was 10-fold more potent than that of the reference drug Oseltamivir ($IC_{50}=5.1{\mu}mol/L$).

제천 한약재의 역사에 기반한 한방산업 전략 (Herbal medicine bio industry strategy based on the historical topography of Jecheon city)

  • 안상영;권오민;박상영;안상우
    • 한국한의학연구원논문집
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    • 제14권1호
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    • pp.33-40
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    • 2008
  • Revising 11 historical topography of Jecheon city we could notice that this territory was traditionally producing high quality medicinal plants. This view is supported as it was tributed to the King. Production of medicinal plants continue these days, Jecheon being one of the largest production of medicinal plants in Korea. Abundant production of diverse medicinal plants of high quality seems to be linked with the soil, climate and environmental characteristics unique of Jecheon. Therefore we propose to develop new type of herbal medicin drugs like Gobang(膏方) which could distinguish from other places. Gobang matchs well to the requirement of current days being convenient to carry and of good taste. Also is appropriate to treat chronic diseases. Its primordial abundant herbal medicines of high quality for the development of Gobang where Jecheon can provide.

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Antioxidant and Lipid-lowering Effects of Artemisia capillaris on a Rat Model of Hyperlipidemia

  • Jang, Woo-Seok;Kim, Yoon-Sik;Seol, In-Chan
    • 대한한의학회지
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    • 제33권2호
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    • pp.11-24
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    • 2012
  • Objectives: This study was designed to evaluate lipid-lowering and antioxidant effects of Artemisia capillaris(A. capillaris) using a model of hyperlipidemic rats induced by poloxamer-407. Methods: Rats were previously treated by A. capillaris water extract, and intraperitoneally injected by poloxamer-407 to induce hyperlipidemia. Parameters of serum lipid and oxidative stress biomarkers were determined. Results: 1. A. capillaris ameliorated the elevation of serum total cholesterol, triglyceride, LDL-cholesterol and MDA level. 2. A. capillaris ameliorated the reduction of serum TAC and SOD activities. 3. A. capillaris ameliorated the reduction of serum GSH and GSH-reductase level. Conclusions: According to these results, A. capillaris can be used to treat hyperlipidemia or as basis for making new drugs for treating hyperlipidemia in the future.