• 제목/요약/키워드: clinical research

검색결과 14,675건 처리시간 0.044초

흉선암종에서 우연히 발견된 환 모양의 Tc-99m MIBI 섭취 증가 (Unexpected Uptake of Tc-99m MIBI in Thymic Carcinoma: Ring-like Appearance)

  • 손명희;정환정;임석태;김동욱;임창열
    • Nuclear Medicine and Molecular Imaging
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    • 제41권3호
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    • pp.255-257
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    • 2007
  • A 59-year-old man with thymic carcinoma underwent Tc-99m MIBI myocardial SPECT, and Tc-99m MIBI uptake in the mass was unexpectedly found in a planar image. SPECT images of the thorax showed an increased uptake area with central photon deficiency (a ring-like appearance), which reflected central tumor irreversible ischemia or progressing necrosis with peripheral viable tumor tissue.

Application of porcine small intestinal submucosa (Vetrix BioSIS®) for recurrent corneal sequestrum in an American shorthair cat

  • Kim, Youngsam;Kang, Seonmi;Nam, Sunhwa;Yun, Seongjin;Seo, Kangmoon
    • 대한수의학회지
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    • 제60권4호
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    • pp.229-232
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    • 2020
  • A 15-year-old, spayed, female American shorthair cat presented with recurrent corneal sequestrum in the right eye. The cat had undergone superficial keratectomy twice for corneal sequestrum treatment 5 and 11 months previously. Two layers of porcine small intestinal submucosa (SIS; Vetrix BioSIS®) were applied to the surgical corneal defect after keratectomy. Thereafter, clinical signs, such as lacrimation, blepharospasm, and corneal ulcer, disappeared 50 days postoperatively. Moreover, the application of SIS with keratectomy prevented recurrence until 651 days after surgery. SIS could be applied as an additional bioscaffold for surgical repair of corneal sequestrum recurring after superficial keratectomy alone in cats.

Chemopreventive Effect of Retinoids on Cellular NF-kappaB Activity Induced by Alkylating Carcinogens in Human Epidermal Keratinocytes

  • Cho, Eun-Jeong;Lee, Min-Hee;Kim, Seung-Kyoon;Lee, Young-Jong;Moon, Ki-Young
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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    • pp.171.2-171.2
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    • 2003
  • Retinoids have been shown to be effective in suppressing tumor development in chemical carcinogens such as N-nitroso-N-methylurea (NMU) and N-nitroso-N-ethylurea (NEU) induced mammary tumors in various animals. However, retinoids-mediated chemopreventive process, linked to transcription factor NF-kappaB activation on chemoprevention has yet to be studied. (omitted)

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인도 임상시험 피해보상제도 분석 및 윤리적 고찰 (Analysis and Ethical Review of the Compensation System for Clinical Trial Injury in India)

  • 이찬주;최병인
    • 대한기관윤리심의기구협의회지
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    • 제3권1호
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    • pp.1-10
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    • 2021
  • In 2004, India began investing in the clinical trial industry; the country now boasts a 20% market share with the help of a valuable resource - the world's second largest population. The Contract Research Organization has been able to generate profits efficiently conducting clinical trials via a large pool of participants, skilled researchers, and reduced developmental costs. As the demand and sheer number of global clinical trials increased, the International Council of Harmonization-Good Clinical Practice was introduced, and the need for the Institutional Review Board increased. While the clinical trial industry in India boomed, it came at the expense of the participants' civil rights. The increased media attention regarding the ethical issues forced the Indian Supreme Court to take action. Consequently, India is the only country, by law, that specifically compensates participants suffering from injury directly resulting from participation in clinical trials. This research paper will describe and compare the relevant laws of India and Korea including compensation criteria. In addition, the ethical issues and aspects of indemnity in clinical trials will be discussed. While the clear advantage of the compensation is one of the protected rights of a clinical subject, the current system is not perfect. Furthermore, laws created to redeem ethical issues can have unintended, negative consequences.

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Recruitment and enrollment in a randomized clinical trial of mandibular two-implant overdenture

  • Lee, Jeong-Yol;Kim, Min-Soo;Kim, Ha-Young;Shin, Sang-Wan
    • The Journal of Advanced Prosthodontics
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    • 제5권2호
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    • pp.204-208
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    • 2013
  • PURPOSE. The purpose of this study was to evaluate the effectiveness of a promotion campaign for subject recruitment and selection, and reasons of withdrawal from a prospective clinical trial of mandibular two-implant supported overdenture. MATERIALS AND METHODS. The subjects of this study were participants in a randomized controlled clinical trial for investigating prognosis of implants and overdentures with attachments. Recruited subjects were classified by gender, age, and participation motives. Withdrawal rate of the participants before and after enrollment were evaluated. RESULTS. 177 patients were recruited and 51 patients were enrolled for the trial. Among them, 40 participants eventually took part in the trial. 116 subjects (65.5%) were recruited by advertisement and 61 (34.5%) were referred by patients of the hospital or local clinics. Regarding recruitment effectiveness, newspaper recruited the largest number of participants. With respect to referral patients, the proportion of our hospital patients was higher (37/61). Subjects in their 70s comprised the largest proportion (22/51). The male to female ratio was similar (25:26). Final withdrawal rate of all subjects were 74.0%. Among the reasons for withdrawal from enrollment (n=126) presence of remaining teeth and lack of motivation were the most common reasons. CONCLUSION. To facilitate recruitment of clinical trial subjects and improve enrollment rate, it is important to obtain a sufficient number of researchers, perform promotion activity with diverse strategies, cooperate with local dentists, increase the research funding, and alleviate subjects' fear against clinical trials by thorough consultation.

Functional Prediction of Hypothetical Proteins from Shigella flexneri and Validation of the Predicted Models by Using ROC Curve Analysis

  • Gazi, Md. Amran;Mahmud, Sultan;Fahim, Shah Mohammad;Kibria, Mohammad Golam;Palit, Parag;Islam, Md. Rezaul;Rashid, Humaira;Das, Subhasish;Mahfuz, Mustafa;Ahmeed, Tahmeed
    • Genomics & Informatics
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    • 제16권4호
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    • pp.26.1-26.12
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    • 2018
  • Shigella spp. constitutes some of the key pathogens responsible for the global burden of diarrhoeal disease. With over 164 million reported cases per annum, shigellosis accounts for 1.1 million deaths each year. Majority of these cases occur among the children of the developing nations and the emergence of multi-drug resistance Shigella strains in clinical isolates demands the development of better/new drugs against this pathogen. The genome of Shigella flexneri was extensively analyzed and found 4,362 proteins among which the functions of 674 proteins, termed as hypothetical proteins (HPs) had not been previously elucidated. Amino acid sequences of all these 674 HPs were studied and the functions of a total of 39 HPs have been assigned with high level of confidence. Here we have utilized a combination of the latest versions of databases to assign the precise function of HPs for which no experimental information is available. These HPs were found to belong to various classes of proteins such as enzymes, binding proteins, signal transducers, lipoprotein, transporters, virulence and other proteins. Evaluation of the performance of the various computational tools conducted using receiver operating characteristic curve analysis and a resoundingly high average accuracy of 93.6% were obtained. Our comprehensive analysis will help to gain greater understanding for the development of many novel potential therapeutic interventions to defeat Shigella infection.

수술실 간호사의 임상등급에 따른 간호역량 (A Study on the Clinical Competence according to Clinical Ladder of Operating Room Nurses)

  • 최진숙;은영
    • 한국간호교육학회지
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    • 제12권1호
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    • pp.60-69
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    • 2006
  • Purpose: This study was to explore the clinical competence according to clinical ladder of operating room nurses. Method: The subjects were 125 the operating room nurses working at five university hospitals in four city. The instrument to measure the clinical competency and clinical performance of OR nurses was developed by researcher. It consisted of 12 domains of clinical competence and 23 items of clinical performance. Results: Clinical competence and clinical performance of OR nurses group devided into 4 groups by clinical ladder such as 0-12month, 13-36 mon. 37-84 mon. over 85 month were significantly different. More experienced nurses performed higher level of clinical performance and competency in 23 items and 12 domains. Conclusion: It will be needed to add concrete behavioral patterns and behavioral indicators of nursing competencies, per stage of the clinical ladder, by repetitive studies on nurses of various hospitals and to confirm the validity.

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