• 제목/요약/키워드: new drugs

검색결과 965건 처리시간 0.027초

Physiological Parameters in Cynomolgus Monkey

  • Kim, Choong-Yong;Han, Su-Cheol;Heo, Jeong-Doo;Yasuo Tarumoto;Lee, Hyun-Sook;Ha, Chang-Su;Kwon, Myung-Sang;Chung, Moon-Koo
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2003년도 추계학술대회
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    • pp.148-148
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    • 2003
  • The cynomolgus monkey(Macaca fascicularis) is used widely in efficacy and safety assessment of new drugs. The ranges of physiological variables are important end points in the toxicological study. Both the basic physiological variables such as body weight, body temperature, blood pressure, urine pH and blood variables such as biochemical and hematological variables were determined in nineteen male and sixteen female monkey prior to treatment.(omitted)

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Recent Trends in Cyclic Peptides as Therapeutic Agents and Biochemical Tools

  • Choi, Joon-Seok;Joo, Sang Hoon
    • Biomolecules & Therapeutics
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    • 제28권1호
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    • pp.18-24
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    • 2020
  • Notable progress has been made in the therapeutic and research applications of cyclic peptides since our previous review. New drugs based on cyclic peptides are entering the market, such as plecanatide, a cyclic peptide approved by the United States Food and Drug Administration in 2017 for the treatment of chronic idiopathic constipation. In this review, we discuss recent developments in stapled peptides, prepared with the use of chemical linkers, and bicyclic/tricyclic peptides with more than two rings. These have widespread applications for clinical and research purposes: imaging, diagnostics, improvement of oral absorption, enzyme inhibition, development of receptor agonist/antagonist, and the modulation of protein-protein interaction or protein-RNA interaction. Many cyclic peptides are expected to emerge as therapeutics and biochemical tools.

중국산 천연자원의 세포독성 검색 (Cytotoxic Activity of Several Extracts from Chinese Medicinal Plants)

  • 유영진;이유희;김영숙;박종대;김신일
    • 생약학회지
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    • 제28권4호
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    • pp.192-197
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    • 1997
  • As a part of searching for new antitumor agents from natural products, 94 kinds of Chinese plants were extracted with petroleum ether/ether (1:1), ethyl acetate and methanol, successively and their cytotoxicities were evaluated against A549 (human lung carcinoma) cell line. Among them, six kinds of ether extracts, seven kinds of ethyl acetate extracts and one kind of methanol extracts showed significant cytotoxic activities (above 70% inhibition) at a concentration of $50\;{\mu}g/ml$. These results surest that they may be involved in natural sources with possible anticancer activities.

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Advanced Glycation Endproduct-induced Diabetic Complications

  • Lee, Hyun-Sun;Hong, Chung-Oui;Lee, Kwang-Won
    • Food Science and Biotechnology
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    • 제17권6호
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    • pp.1131-1138
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    • 2008
  • Diabetic complications are a leading cause of blindness, renal failure, and nerve damage. Additionally, diabetes-accelerated atherosclerosis leads to increased risk of myocardial infarction, stroke, and limb amputation. At the present time, 4 main molecular mechanisms have been implicated in hyperglyceamia-mediated vascular damage. In particular, advanced glycation endproducts (AGE), which are formed by complex, heterogeneous, sugar-derived protein modifications, have been implicated as a major pathogenic process for diabetic complications. Recently, AGE inhibitors such as aminoguanidin, ALT-946, and pyridoxamine have been reported. Such an integrating paradigm provides a new conceptual framework for future research on diabetes complications and on discovering drugs to prevent the progression of AGE-induced maladies.

RNA Binding Protein as an Emerging Therapeutic Target for Cancer Prevention and Treatment

  • Hong, Suntaek
    • Journal of Cancer Prevention
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    • 제22권4호
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    • pp.203-210
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    • 2017
  • After transcription, RNAs are always associated with RNA binding proteins (RBPs) to perform biological activities. RBPs can interact with target RNAs in sequence- and structure-dependent manner through their unique RNA binding domains. In development and progression of carcinogenesis, RBPs are aberrantly dysregulated in many human cancers with various mechanisms, such as genetic alteration, epigenetic change, noncoding RNA-mediated regulation, and post-translational modifications. Upon deregulation in cancers, RBPs influence every step in the development and progression of cancer, including sustained cell proliferation, evasion of apoptosis, avoiding immune surveillance, inducing angiogenesis, and activating metastasis. To develop therapeutic strategies targeting RBPs, RNA interference-based oligonucleotides or small molecule inhibitors have been screened based on reduced RBP-RNA interaction and changed level of target RNAs. Identification of binding RNAs with high-throughput techniques and integral analysis of multiple datasets will help us develop new therapeutic drugs or prognostic biomarkers for human cancers.

The 21C Research Trend on the Cosmeceuticals

  • Horii, Izumi
    • 대한화장품학회지
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    • 제26권2호
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    • pp.9-12
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    • 2000
  • Certain types of anti-inflammatory components and whitening components were in practical use as the active ingredients of quasi drugs expected to display their pharmacological actions. However, only twenty years at most have past since the introduction of cosmetics that not only physically change the condition of the surface of the skin, but also promote skin homeostasis from by acting on the physiological mechanisms of the skin. Since then, much effort hasa been made to find new active ingredients suitable for full-scale development, and the term "cosmeceutical" has often been coined to describe cosmetics containing pharmacologically active components. In this report, the prospects of cosmeceuticals will be discussed on the basis of a review of the history of the development of current skin-care products.

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Management of Persistent Pulmonary Hypertension in Preterm Infants

  • Lee, Byong Sop
    • Neonatal Medicine
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    • 제28권1호
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    • pp.1-6
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    • 2021
  • Persistent pulmonary hypertension of the newborn (PPHN) is a consequence of the failure of a decrease in the elevated pulmonary vascular resistance after birth. Pulmonary vasodilators, including inhaled nitric oxide (iNO), have been the mainstream of targeted therapy for PPHN, but no drugs have been proven to be effective in preterm infants with PPHN. The fetus remains hemodynamically stable despite lower arterial oxygen tension and pulmonary blood flow as compared to full-term newborns. This adaptation is due to the lower oxygen requirement and high oxygen-carrying capacity of fetal circulation. The immature lungs of preterm infants are more vulnerable to reactive oxygen species, and the response of pulmonary vascular dilatation to blood oxygen tension is blunted in preterm infants. Recently, iNO has been reported to be effective in a selected group of preterm infants, such as those with prolonged preterm rupture of membrane-oligohydramnios-pulmonary hypoplasia sequence. PPHN in preterm infants, along with maximum supportive treatment based on fetal physiology and meticulous assessment of cardiovascular function, is in dire need of new treatment guidelines, including optimal dosing strategies for pulmonary vasodilators.

BRIEF HISTORY OF TRANSLATION IN UNANI MEDICINE WITH MAJOR MILESTONES: A GLIMPSE

  • Ansari, Shabnam
    • 셀메드
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    • 제9권3호
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    • pp.1.1-1.6
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    • 2019
  • Unani medicine has been used extensively as preventive and therapeutic healthcare in India. It mostly utilizes herbal drugs for the treatment of various conditions and ailments. It is based upon the humoural and temperament theory of Buqrat (Hippocrates). Unani medicine is one of the oldest traditional system rooted within the Greek, Iranian, Arabic, and Islamic medical knowledge and has developed as a scientific healthcare system. It is highly practiced and popular in certain parts of the world, and the World Heritage Centre, part of the United Nations Educational, Scientific, and Cultural Organization (UNESCO), and the United Nations Foundation list it as an authentic and still-living form of traditional medicine. But in the past, its survival required utmost efforts from different dynasties, scholars and organization around the world. The efforts of promotion, preservation, translation, upgradation and publication of medical knowledge has crucially given new life to Unani medicine in each era. This letter will enlighten the efforts of translations of medical knowledge in Unani medicine from its arising need in the past till present.

Tyrosinase and melanin biosynthesis inhibitory activities of crude drugs

  • Jun, Jung-Yang;Ko, Eun-Kyung;Kim, Mi-Hee;Li-Xun;Park, Sung-Uk;Kim, Youn-Chul
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.382.2-382.2
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    • 2002
  • Melanin biosynthesis inhibitors are useful not only for the materials used in cosmetics as skin-whitening agents but also for the remedy of hyperpigmentation. In order to find the new skin-whitening compounds from the natural products. screening of tyrosinase and melanin biosynthesis inhibitory activities in vitro has been carried out. The MeOH extracts and/or fractions of Polygoni multiflori Radix, Dalbergiae odoriferae Lignum. Solnani nigri Herba. Polygoni cuspidati Radix. POlygoni multiflori Ramulus. Salviae Radix showed tyrosinase inhibitory effects. Four methanolic extracts also showed melanin biosynthesis inhibitory effects in B-16 melanoma cell line.

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