- The effect of photodynamic therapy using Radachlorin on biofilm-forming multidrug-resistant bacteria
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Choong-Won Seo, Young-Kwon Kim, Jeong-Lib An, Jong-Sook Kim, Pil-Seung Kwon, Young-Bin Yu
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Osong Public Health Res Perspect. 2022;13(4):290-297. Published online August 10, 2022
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DOI: https://doi.org/10.24171/j.phrp.2022.0150
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Abstract
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- Objectives
This study aimed to test the effect of photodynamic therapy (PDT) on the inhibition and removal of biofilms containing multidrug-resistant Acinetobacter baumannii.
Methods Using multidrug-resistant A. baumannii strains, an antibiotic susceptibility test was performed using the Gram-negative identification card of the Vitek 2 system (bioMérieux Inc., France), as well as an analysis of resistance genes, the effects of treatment with a light-emitting diode (LED) array using Radachlorin (RADA-PHARMA Co., Ltd., Russia), and transmission and scanning electron microscopy to confirm the biofilm-inhibitory effect of PDT.
Results The antibiotic susceptibility test revealed multiple resistance to the antibiotics imipenem and meropenem in the carbapenem class. A class-D–type β-lactamase was found, and OXA-23 and OXA-51 were found in 100% of 15 A. baumannii strains. After PDT using Radachlorin, morphological observations revealed an abnormal structure due to the loss of the cell membrane and extensive morphological changes, including low intracellular visibility and small vacuoles attached to the cell membrane.
Conclusion PDT involving a combination of LED and Radachlorin significantly eliminated the biofilm of multidrug-resistant A. baumannii. Observations made using electron microscopy showed that PDT combining LED and Radachlorin was effective. Additional studies on the effective elimination of biofilms containing multidrug-resistant bacteria are necessary, and we hope that a treatment method superior to sterilization with antibiotics will be developed in the future.
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Citations
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- Photophysical properties of Radachlorin photosensitizer in solutions of different pH, viscosity and polarity
A.V. Belashov, A.A. Zhikhoreva, I.A. Gorbunova, M.E. Sasin, Sh.S. Shayakhmedov, I.V. Semenova Spectrochimica Acta Part A: Molecular and Biomolec.2024; 305: 123480. CrossRef - Applications of Antimicrobial Photodynamic Therapy in Aquaculture: Effect on Fish Pathogenic Bacteria
Edith Dube, Grace Emily Okuthe Fishes.2024; 9(3): 99. CrossRef - Understanding the biofilm development of Acinetobacter baumannii and novel strategies to combat infection
Naji Naseef Pathoor, Akshaya Viswanathan, Gulshan Wadhwa, Pitchaipillai Sankar Ganesh APMIS.2024; 132(5): 317. CrossRef - PDT-Induced Variations of Radachlorin Fluorescence Lifetime in Living Cells In Vitro
Andrey V. Belashov, Anna A. Zhikhoreva, Anna V. Salova, Tatiana N. Belyaeva, Ilia K. Litvinov, Elena S. Kornilova, Irina V. Semenova Photonics.2023; 10(11): 1262. CrossRef
- Epidemiological Characterization of Imported Systemic Mycoses Occurred in Korea
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Seung-Hak Cho, Young-Bin Yu, Je-Seop Park, Keun-Dol Yook, Young-Kwon Kim
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Osong Public Health Res Perspect. 2018;9(5):255-260. Published online October 31, 2018
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DOI: https://doi.org/10.24171/j.phrp.2018.9.5.07
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11,294
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Abstract
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Objectives
Imported systemic mycoses is a severe fungal infection that can cause diseases in healthy people. However, there is a serious lack of epidemiological data about imported systemic mycoses. Therefore, an epidemiological characterization of imported systemic mycoses in Korea was performed.
Methods
We collected health insurance data between 2008 and 2012 from the Health Insurance Corporation and analyzed the data to determine the prevalence and treatment management of imported systemic mycoses.
Results
The prevalence of imported systemic mycoses between 2008 and 2012 increased slowly by 0.49/100,000 to 0.53/100,000 persons. The prevalence of coccidioidomycosis increased from 0.28/100,000 in 2008 to 0.36/100,000 persons in 2012. A mean of 229.6 cases occurred each year. Children and the elderly showed higher prevalence than adults in the 20- to 59-year-old age group. The rate of infection according to region ranged from 0.18/100,000 persons in Ulsan, to 0.59/100,000 persons in Gyeonggi. The prevalence in females was higher than that in males. Inpatient treatment was 3.3% (38 cases), with 96.7% treated as outpatients. Hospitalizations cost 272.7 million won and outpatient treatments cost 111.7 million won. The treatment cost for coccidioidomycosis from 2008 to 2012 was 330.9 million won, with personal charges of 79.2 million won and insurance charges of 251.7 million won. Most of the expenses for the coccidioidomycosis treatment were for inpatient treatment.
Conclusion
The results in this study may be a useful resource for determining the changes in the trend of imported systemic mycoses.
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- Epidemiological Characterization of Skin Fungal Infections Between the Years 2006 and 2010 in Korea
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Sang-Ha Kim, Seung-Hak Cho, Seung-Ki Youn, Je-Seop Park, Jong Tae Choi, Young-Seok Bak, Young-Bin Yu, Young Kwon Kim
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Osong Public Health Res Perspect. 2015;6(6):341-345. Published online December 31, 2015
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DOI: https://doi.org/10.1016/j.phrp.2015.10.012
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4,172
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36
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Abstract
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- Objectives
The purpose of this study was to build and provide a basic database of skin fungal infections for the effective management of skin fungal infections in the future. Methods
We collected health insurance data between the years 2006 and 2010 from the Health Insurance Corporation (Seoul, Korea) and analyzed the data to determine the prevalence and treatment management of skin fungal infections. Results
Skin fungal infections were divided into two groups: namely dermatophytosis and other superficial mycoses. Dermatophytosis showed a higher prevalence (16,035,399 cases) than the other superficial mycoses (794,847 cases) within the study period. The prevalence rate decreased consecutively by 0.01% to 0.19% every year. The prevalence according to region showed that Jeolla-do had a high prevalence distribution. The prevalences in men and women were similar (7.01% vs. 6.26%). It is interesting to note that adults from the 50–79-year age group showed a higher prevalence than children and young adults. The average convalescence time (days) of dermatophytosis was longer than that of other superficial mycoses. The total medical expenses were also much higher in dermatophytosis than in the other superficial mycoses. Conclusion
This study provides useful data for study trends of skin fungal infections.
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Rondinelli Donizetti Herculano, Camila Eugênia dos Reis, Silvia Maria Batista de Souza, Giovana Sant'Ana Pegorin Brasil, Mateus Scontri, Satoru Kawakita, Bruna Gregatti Carvalho, Camila Calderan Bebber, Yanjin Su, Ana Paula de Sousa Abreu, Marvin M Mecwan Journal of Controlled Release.2024; 365: 744. CrossRef - Microsurgical Debridement for Persistent Ulcers Due to Rare Fungus Infection: Case Report and Literature Review
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Daiane Flores Dalla Lana, Stefânia Neiva Lavorato, Laura Minussi Giuliani, Letícia Cruz, William Lopes, Marilene Henning Vainstein, Igor Camargo Fontana, Aline Rigon Zimmer, Murillo de Araújo Freitas, Saulo Fernandes de Andrade, Ricardo José Alves, Alexan Mycoses.2020; 63(2): 197. CrossRef -
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Thainá V da Silva, Natan R de Barros, Caroline B Costa-Orlandi, Jean L Tanaka, Lincoln G Moro, Giovana S Pegorin, Kassandra SM Oliveira, Maria JS Mendes-Gianinni, Ana M Fusco-Almeida, Rondinelli D Herculano Future Microbiology.2020; 15(15): 1439. CrossRef - The Pathogenesis of Fungal-Related Diseases and Allergies in the African Population: The State of the Evidence and Knowledge Gaps
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Neslihan Üstündağ Okur, Maria Filippousi, Mehmet Evren Okur, Şule Ayla, Emre Şefik Çağlar, Ayşegül Yoltaş, Panoraia I. Siafaka Journal of Drug Delivery Science and Technology.2018; 46: 74. CrossRef - Serious fungal infections in Korea
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