• 제목/요약/키워드: Preclinical Study

검색결과 269건 처리시간 0.021초

한방재활의학과학회지의 연구동향: 최근 10년간의 연구들을 질환과 치료법 중심으로 (Trends of Studies in Journal of Korean Medicine Rehabilitation: Focused on Diseases and Treatment for Recent 10 years)

  • 정지홍;윤홍렬;김순중
    • 한방재활의학과학회지
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    • 제33권1호
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    • pp.61-75
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    • 2023
  • Objectives The purpose of this study is to find out what diseases or treatments the Korean Medicine Rehabilitation department is dealing with. Methods For data collection, papers published from 2012 to 2021 were searched and collected on the website of the Korean Society of Rehabilitation Medicine (https://www.ormkorea.org/). After that, reconfirmed data at the Oriental Medicine Advanced Searching Integrated System (OASIS) Traditional Medicine Portal (https://oasis.kiom.re.kr/). The searched papers were classified by year and classified according to format based on thesis and abstract. In addition, the papers were classified by subject, focusing on diseases and treatments. Results Total 557 studies were classified. The format of a total of 557 papers was distributed in 129 preclinical studies (23.2%), 136 literature studies (24.4%), 153 clinical studies (27.5%), 112 case reports (20.1%), and 27 other studies (4.8%). While preclinical studies and clinical studies are gradually decreasing over the years, case reports and literature studies are gradually increasing. Conclusions The number of papers in Journal of Korean Medicine Rehabilitation is gradually decreasing. Papers on more diverse topics is needed for the qualitative growth of journals and Department of Korean Medicine Rehabilitation.

Whole genome sequence analyses of thermotolerant Bacillus sp. isolates from food

  • Phornphan Sornchuer;Kritsakorn Saninjuk;Pholawat Tingpej
    • Genomics & Informatics
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    • 제21권3호
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    • pp.35.1-35.12
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    • 2023
  • The Bacillus cereus group, also known as B. cereus sensu lato (B. cereus s.l.), is composed of various Bacillus species, some of which can cause diarrheal or emetic food poisoning. Several emerging highly heat-resistant Bacillus species have been identified, these include B. thermoamylovorans, B. sporothermodurans, and B. cytotoxicus NVH 391-98. Herein, we performed whole genome analysis of two thermotolerant Bacillus sp. isolates, Bacillus sp. B48 and Bacillus sp. B140, from an omelet with acacia leaves and fried rice, respectively. Phylogenomic analysis suggested that Bacillus sp. B48 and Bacillus sp. B140 are closely related to B. cereus and B. thuringiensis, respectively. Whole genome alignment of Bacillus sp. B48, Bacillus sp. B140, mesophilic strain B. cereus ATCC14579, and thermophilic strain B. cytotoxicus NVH 391-98 using the Mauve program revealed the presence of numerous homologous regions including genes responsible for heat shock in the dnaK gene cluster. However, the presence of a DUF4253 domain-containing protein was observed only in the genome of B. cereus ATCC14579 while the intracellular protease PfpI family was present only in the chromosome of B. cytotoxicus NVH 391-98. In addition, prophage Clp protease-like proteins were found in the genomes of both Bacillus sp. B48 and Bacillus sp. B140 but not in the genome of B. cereus ATCC14579. The genomic profiles of Bacillus sp. isolates were identified by using whole genome analysis especially those relating to heat-responsive gene clusters. The findings presented in this study lay the foundations for subsequent studies to reveal further insights into the molecular mechanisms of Bacillus species in terms of heat resistance mechanisms.

Preclinical Evidence and Underlying Mechanisms of Polygonum multiflorum and Its Chemical Constituents Against Cognitive Impairments and Alzheimer's Disease

  • Jihyun Cha;Ji Hwan Yun;Ji Hye Choi;Jae Ho Lee;Byung Tae Choi;Hwa Kyoung Shin
    • 대한약침학회지
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    • 제27권2호
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    • pp.70-81
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    • 2024
  • Objectives: Cognitive impairments, ranging from mild to severe, adversely affect daily functioning, quality of life, and work capacity. Despite significant efforts in the past decade, more than 200 promising drug candidates have failed in clinical trials. Herbal remedies are gaining interest as potential treatments for dementia due to their long history and safety, making them valuable for drug development. This review aimed to examine the mechanisms behind the effect of Polygonum multiflorum on cognitive function. Methods: This study focused primarily on the effects of Polygonum multiflorum and its chemical constituents on cognitive behavioral outcomes including the Morris water maze, the passive avoidance test, and the Y maze, as well as pathogenic targets of cognitive impairment and Alzheimer's disease (AD) like amyloid deposition, amyloid precursor protein, tau hyperphosphorylation, and cognitive decline. Additionally, a thorough evaluation of the mechanisms behind Polygonum multiflorum's impact on cognitive function was conducted. We reviewed the most recent data from preclinical research done on experimental models, particularly looking at Polygonum multiflorum's effects on cognitive decline and AD. Results: According to recent research, Poligonum multiflorum and its bioactive components, stilbene, and emodin, influence cognitive behavioral results and regulate the pathological target of cognitive impairment and AD. Their mechanisms of action include reducing oxidative and mitochondrial damage, regulating neuroinflammation, halting apoptosis, and promoting increased neurogenesis and synaptogenesis. Conclusion: This review serves as a comprehensive compilation of current experiments on AD and other cognitive impairment models related to the therapeutic effects of Polygonum multiflorum. We believe that these findings can serve as a basis for future clinical trials and have potential applications in the treatment of human neurological disorders.

PRECLINICAL TOXICITY STUDY OF A NEW PHOSPHODIESTERASE-5 INHIBITOR (II) FOUR-WEEK SUBACUTE TOXICITY STUDY IN RATS

  • Hyeon Cho;Kim, Dong-Hwan;Kang, Kyung-Koo;Ahn, Byoung-Ok;Kim, Won-Bae
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2001년도 International Symposium on Signal transduction in Toxicology
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    • pp.128-128
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    • 2001
  • Toxic effects of a new phosphodiesterse-5 inhibitor, DA-8159, were investigated in Sprague-Dawley rats by repeated oral administration. Four groups of 10 male and 10 female rats were treated with DA-8159 at a dose of 0, 40, 80, or 320 mg/kg/day for 4 weeks.(omitted)

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랫드에서 STB-HO-BM에 대한 13주 반복투여 독성연구 (Thirteen-week Repeated-dose Toxicity Studies of STB-HO-BM in Rats)

  • 송시환;정연권;홍동호
    • Toxicological Research
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    • 제22권2호
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    • pp.135-144
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    • 2006
  • This study was performed to evaluate repeated-dose toxicities of STB-HO-BM in Sprague-Dawley rats. STB-HO-BM was administered orally to rats at dose levels of 0, 100, 300 and 1,000 mg/kg/day for 13 weeks. In recent study, there were no dose related changes in mortality, clinical signs, body weight changes, food and water consumption, opthalmoscopy, organ weights, urine analysis, hematological findings, and biochemical examination of all animals treated with STB-HO-BM. Gross and histopathological findings revealed no evidence of specific toxicity related to STB-HO-BM. These results suggest that the oral no observed adverse effect level (NOAEL) of STB-HO-BM may be over 1,000 mg/kg in rats.

유전자 조작기법을 통한 돼지 뇌종양 질환모델 개발의 필요성 (The Need for the Development of Pig Brain Tumor Disease Model using Genetic Engineering Techniques)

  • 황선웅;현상환
    • 한국수정란이식학회지
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    • 제31권1호
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    • pp.97-107
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    • 2016
  • Although many diseases could be treated by the development of modern medicine, there are some incurable diseases including brain cancer, Alzheimer disease, etc. To study human brain cancer, various animal models were reported. Among these animal models, mouse models are valuable tools for understanding brain cancer characteristics. In spite of many mouse brain cancer models, it has been difficult to find a new target molecule for the treatment of brain cancer. One of the reasons is absence of large animal model which makes conducting preclinical trials. In this article, we review a recent study of molecular characteristics of human brain cancer, their genetic mutation and comparative analysis of the mouse brain cancer model. Finally, we suggest the need for development of large animal models using somatic cell nuclear transfer in translational research.

최근 10년간 한방비만학회지의 연구동향 분석: 2010-2019년 한방비만학회지 게재논문을 중심으로 (Analysis of Research Trends in Papers Published in the Journal of Korean Medicine for Obesity Research: Focused on 2010-2019)

  • 박서현;송윤경
    • 한방비만학회지
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    • 제20권2호
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    • pp.149-177
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    • 2020
  • Objectives: This study performed to identify trends in research published in the Journal of Korean Medicine for Obesity Research during last one decade. Methods: All of the articles in the Journal of Korean Medicine for Obesity Research published from 2010 to 2019 were collected. Search were conducted through "http://jkomor.org." Collected articles were classified into year and type of publication. Additional data including study design, study topics, characteristics of participants and treatment, outcomes was extracted from full text of each study. Results: Total 135 articles were analyzed. The number of studies were increasing after 2015. According to classification by type of study, percentage of clinical study took 27%, preclinical study took 37%, literary study took 21%, and case report took 15%. The number of studies were grown and study topics have been diversified. However for the growth of quality, concern for subjects, study design, quality assessment according to research guidelines and ethical consideration is needed. Conclusions: The number of studies and issues each study focused on have been increasing. To improve the quality of studies, further studies should be followed.

Comparative Proteome Analysis of Celastrol-Treated Helicobacter pylori

  • Kim, Sa-Hyun
    • 대한의생명과학회지
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    • 제23권4호
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    • pp.395-401
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    • 2017
  • Various preclinical and clinical trials have been conducted the efficacy of celastrol. In data presented in the current manuscript is the first trial to inhibit Helicobacter pylori with celastrol. In this study, the quantitative change of various H. pylori proteins including CagA and VacA by the anti-bacterial effect of celastrol was determined. The anti-H. pylori effects of celastrol was investigated by performing 2-dimensional electrophoresis and additional supporting experiments. After 2-dimensional electrophoresis analysis, spot intensities were analyzed and then each spot was identified using matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF-MS) or peptide sequencing using Finnigan LCQ ion trap mass spectrometer (LC-MS/MS). The results show that celastrol has multiple effects on protein expression in H. pylori.

ASSESSMENT OF LOCAL LYMPH NODE ASSAY AS AN ALTERNATIVE METHOD FOR SKIN SENSITIZATION POTENTIAL

  • Hwang, In-Chang;Kim, Hyung-Soo;Dong, Mi-Sook;Park, Jae-Hyun;Lee, Jong-Kwon;Oh, Hye-Young;Park, Young-In
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2001년도 International Symposium on Dietary and Medicinal Antimutgens and Anticarcinogens
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    • pp.194-194
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    • 2001
  • Preclinical test methods for allergenic potential chemicals has been widely used to assess human risks and has been developed. Recently, the murine local lymph node assay (LLNA) has been proposed as a prospective method to identify contact allergens and to replace conventional the guinea pig maximization test (GPMT). The objective of this study was to establish LLNA and to evaluate allergenicity of chemicals by LLNA. (omitted)

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Update of early phase clinical trials in cancer immunotherapy

  • Lee, Dae Ho
    • BMB Reports
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    • 제54권1호
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    • pp.70-88
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    • 2021
  • Immunotherapy has revolutionized the landscape of cancer treatment and become a standard pillar of the treatment. The two main drivers, immune checkpoint inhibitors and chimeric antigen receptor T cells, contributed to this unprecedented success. However, despite the striking clinical improvements, most patients still suffer from disease progression because of the evolution of primary or acquired resistance. This mini-review summarizes new treatment options including novel targets and interesting combinational approaches to increase our understanding of the mechanisms of the action of and resistance to immunotherapy, to expand our knowledge of advances in biomarker and therapeutics development, and to help to find the most appropriate option or a way of overcoming the resistance for cancer patients.