• Title/Summary/Keyword: Photodynamic therapy

검색결과 186건 처리시간 0.045초

구강악안면외과 영역의 전암병소 및 악성종양 치료를 위한 광역학 요법의 이용 (PHOTODYNAMIC THERAPY OF PREMALIGNANT AND MALIGNANT LESIONS IN ORAL AND MAXILLOFACIAL SURGERY)

  • 오정환
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • 제28권3호
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    • pp.234-238
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    • 2002
  • 구강악안면외과 영역의 전암병소와 종양의 치료를 위하여 국소적으로 ALA, 전신적으로 Forscan의 광감각제를 도포하거나 주입하여 기능적, 심미적으로 좋은 결과를 얻을 수 있었다. 아직 장기적인 추적조사가 요구되지만 광역학 요법은 기존의 수술법, 항암요법, 방사선치료와 함께 종양의 새로운 치료방법으로 이용될 수 있을 것으로 사료된다.

양성 기관종양에서 치험한 광역학 치료의 근치적 효과 (A Case of Curative Photodynamic Therapy in Benign Tracheal Tumor)

  • 박재길;김재준;송정섭;왕영필
    • 대한기관식도과학회지
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    • 제15권1호
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    • pp.60-63
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    • 2009
  • The photodynamic therapy (PDT) is a new treatment modality of destroying malignant tumors and pre-malignant lesions based on the use of photodynamical damage to tumor cells under the photochemical reactions. But the clinical reports of photodynamic application on the benign tumor of the internal organs were extremely rare. So we decribed our experience of one case of benign tracheal tumor successfully treated by PDT.

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Photodynamic Therapy Combined with 1064-nm Nd:YAG Laser Therapy and Topical Efinaconazole for Refractory Onychomycosis: Case Series

  • Park, Jae Wan;Koh, Young Gue;Seo, Seong Jun;Park, Kui Young
    • Medical Lasers
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    • 제10권3호
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    • pp.185-188
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    • 2021
  • Onychomycosis is the most common disease of the nail, with a worldwide prevalence of 5.5%. It causes local pain, paresthesia, and cosmetic problems and decreases the patients' quality of life. Conventional treatments include the administration of topical and systemic agents. However, factors such as subungual hyperkeratosis and biofilm formation may affect the efficacy of these treatments. Moreover, side effects associated with systemic agents are a major concern for patients. Therefore, various novel treatments are being developed; among them, photodynamic therapy (PDT) and Nd:YAG laser are promising, and several studies have demonstrated the efficacy and safety of PDT and laser therapy. Here, we report the efficacy and tolerability of PDT combined with 1064-nm Nd:YAG laser therapy and topical efinaconazole for the treatment of three patients with refractory onychomycosis.

광역학적 암진단을 위한 여기광원장치의 설계 (Design of Excitation Light Source for Photodynamic Diagnosis)

  • 이상찬;임현수
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 심포지엄 논문집 정보 및 제어부문
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    • pp.36-38
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    • 2005
  • Photodynamic diagnosis is a modern method for the fluorescence imaging of cancer. 5-ALA induced protoporphyrin IX fluorescence benefits the tumour selective accumulation of protoporphyrin ; therefore, tumours can be differentiated from healthy tissue. This paper develops Photodynamic diagnosis (PDD) system about ALA that apply tissue absorption coefficient. About other photosensitizer, application capacitate. In this paper, we will expect effective result by working PDD with PDT (photodynamic therapy) system that is a therapy device of cancer.

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The role of chemical bond as the preparation of polynuclear metal dendritic molecule for PDD or PDT

  • Choi, Chang-Shik
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2022년도 춘계학술대회
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    • pp.391-393
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    • 2022
  • The preparation of polynuclear metal dendritic molecule for photodynamic diagnosis(PDD) or photodynamic therapy(PDT) has been interested on design and synthesis of metal-to-metal long ranged macromolecule. Herein, imine bond or amide bond as chemical bond is an important role on the construction of energy transfer or electron transfer system. Therefore, we will be presented on the role of chemical bond for the preparation of polynuclear metal dendritic molecule.

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Design of Home or Hetero Polynuclear Metal Dendritic Molecule for PDD or PDT

  • Choi, Chang-Shik
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2021년도 추계학술대회
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    • pp.646-648
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    • 2021
  • The syntheses and properties of polynuclear metal complexes have been reported to develop the easy syntheses and noble photo-characteristics of those complexes for photodynamic diagnosis (PDD) or photodynamic therapy (PDT). We have been focused on the design and synthesis of polynuclear lanthanide dendritic molecule due to long life time of fluorescence. Therefore, we will be presented on the design of home (Eu or Gd) or hetero (Tb or Lu) polynuclear lanthanide dendritic molecule.

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The preparation of dendritic molecule having the binding site for a new generation of PDD or PDT

  • Choi, Chang-Shik
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2022년도 추계학술대회
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    • pp.291-293
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    • 2022
  • The preparation of dendritic molecule for photodynamic diagnosis (PDD) or photodynamic therapy (PDT) has been interested on design and synthesis of macromolecule toward a new generation. Herein, the binding site of polyether group is an important role on the construction of macromolecule toward a new generation. Therefore, we will be presented on the preparation of dendritic molecule having the binding site.

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LED를 활용한 저가의 암세포 증식제어 모듈 개발 및 효과 (Development of low cost module for proliferation control of cancer cells using LED and its therapeutic effects)

  • 조경래;최세운
    • 한국정보통신학회논문지
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    • 제22권9호
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    • pp.1237-1242
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    • 2018
  • 광 역학 치료법은 그 효과가 특정 위치의 암세포에 국한되어있어 주변의 정상 세포에 큰 영향을 미치지 않기 때문에 다양한 부작용이 존재하는 현재의 암 치료법의 대안으로 제안되어 왔다. 이러한 광 역학 치료에는 광감응제를 선택적으로 자극시키기 위해 레이저를 이용하고 있으나, 고가의 치료비용과 높은 발열현상으로 사용에 제한적이다. 그러나 다양한 파장의 빛을 발할 수 있는 소형 발광 다이오드가 저가로 개발됨에 따라 대체가 가능하며, 이는 광 역학 치료 장비의 소형화 및 저가의 치료 장비 개발에 큰 영향을 미치고 있다. 현재 활발하게 연구되는 광 역학 치료법은 다양한 광감응제를 이용하여 암세포의 사멸을 유도하는데 목적이 있으나, 특정한 파장을 중심으로 진행된 연구는 상대적으로 미비한 실정이다. 따라서 본 논문에서는 저렴하며, 발열현상이 작고, 다양한 파장대의 광원지원이 가능한 발광 다이오드를 사용하고 이를 아두이노로 제어하여 새로운 저가의 암세포 증식 억제 모듈을 개발함으로써, 그 효과를 정량적으로 분석하고 새로운 항암치료법을 제시하고자 한다.

The Biologic Effect of Millimeter Wave Irradiation Followed to Photodynamic Therapy on the Tumor

  • Ahn, Jin-Chul;Lee, Chang-Sook;Chang, So-Young;Yoon, Sung-Chul
    • 대한의생명과학회지
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    • 제17권1호
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    • pp.79-84
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    • 2011
  • Photodynamic therapy consists of a photosensitizer, suitable light source and oxygen. The excitation of the photosensitizer at a cancer mass results in oxidation which would ultimately reduce the mass via apoptosis. Millimeter wave (MMW) therapy has also been known to be effective on cancer cell mass reduction, human cell regeneration and immunity enhancement among the Russian clinicians and scientists. In the present study, the two modalities were combined to achieve synergistic effects while reducing the administration dosage of the photosensitizer, photogem, thus minimizing the side effects. The CT-26 adenocarcinoma cell mass was implanted on mice and the tumors were exposed to a simple MMW irradiation or a combined treatment of MMW and PDT. The treatments continued for 4 weeks and the size of the tumor was measured continuously. The significant therapeutic result of MMW was not found during 4 weeks, preferably more cancer recurrence possibility after MMW irradiation was observed. The results of this study suggest that the combination of MMW irradiation and photodynamic treatment should not be recommended. The result of the MMW treatment alone, however, displayed suppressive effect on cancer cell proliferation for both in vitro and in vivo. The results of the present study suggest that the millimeter wave therapy deserves a further study.

Usefulness of Photodynamic Therapy in the Management of Early Central Lung Cancer: A Report of Three Cases

  • Lee, Jong Hoo;Jeon, Kyeongman;Koh, Won-Jung;Suh, Gee Young;Chung, Man Pyo;Kim, Hojoong;Kwon, O Jung;Han, Joungho;Um, Sang-Won
    • Tuberculosis and Respiratory Diseases
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    • 제67권4호
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    • pp.338-344
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    • 2009
  • In photodynamic therapy, a chemical photosensitizer is activated by light of a specific wavelength., Photodynamic therapy has been combined with bronchoscopy in patients who are ineligible for surgical resection in order to treat patients with early central lung cancer. Here, we describe 3 patients with early central lung cancer who were treated effectively using photodynamic therapy. Our experience shows that this approach is a useful modality in the therapy of these types of tumors.