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Won DS, Lee H, Park Y, Chae M, Kim YC, Lim B, Kang MH, Ok MR, Jung HD, Park JH. Dual-Layer Nanoengineered Urinary Catheters for Enhanced Antimicrobial Efficacy and Reduced Cytotoxicity. Adv Healthc Mater 2024:e2401700. [PMID: 39036863 DOI: 10.1002/adhm.202401700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 07/11/2024] [Indexed: 07/23/2024]
Abstract
Catheter-associated urinary tract infection (CAUTI) is the most common healthcare-associated infection; however, current therapeutic strategies remain insufficient for standard clinical application. A novel urinary catheter featuring a dual-layer nanoengineering approach using zinc (Zn) and silver nanoparticles (AgNPs) is successfully fabricated. This design targets microbial resistance, minimizes cytotoxicity, and maintains long-term efficacy. The inner AgNPs layer provides immediate antibacterial effects against the UTI pathogens, while the outer porous Zn layer controls zero-order Ag release and generates reactive oxygen species, thus enhancing long-term bactericidal performance. Enhanced antibacterial properties of Zn/AgNPs-coated catheters are observed, resulting in 99.9% of E. coli and 99.7% of S. aureus reduction, respectively. The Zn/AgNPs-coated catheter significantly suppresses biofilm with sludge formation compared to AgNP-coated and uncoated catheters (all, p < 0.05). The Zn/AgNP-coated catheter in a rabbit model demonstrated a durable, effective barrier against bacterial colonization, maintaining antimicrobial properties during the catheter indwelling period with significantly reduced inflammation and epithelial disruption compared with AgNP and uncoated groups. This innovation has the potential to revolutionize the design of antimicrobial medical devices, particularly for applications requiring long-term implantation. Although further preclinical studies are required to verify its efficacy and safety, this strategy seems to be a promising approach to preventing CAUTI-related complications.
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Affiliation(s)
- Dong-Sung Won
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Hyun Lee
- Department of Biomedical-Chemical Engineering, The Catholic University of Korea, Bucheon, Gyeonggi-do, 14662, Republic of Korea
- Department of Biotechnology, The Catholic University of Korea, Bucheon, 14662, Republic of Korea
| | - Yubeen Park
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Minjung Chae
- Biomaterials Research Center, Biomedical Research Division, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Department of Materials Science and Engineering, Seoul National University (SNU), Seoul, 08826, Republic of Korea
| | - Yu-Chan Kim
- Biomaterials Research Center, Biomedical Research Division, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science and Technology KIST School, Korea University of Science and Technology, Seoul, 02792, Republic of Korea
| | - Bumjin Lim
- Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Min-Ho Kang
- Department of Biomedical-Chemical Engineering, The Catholic University of Korea, Bucheon, Gyeonggi-do, 14662, Republic of Korea
- Department of Biotechnology, The Catholic University of Korea, Bucheon, 14662, Republic of Korea
| | - Myoung-Ryul Ok
- Biomaterials Research Center, Biomedical Research Division, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
- Division of Bio-Medical Science and Technology KIST School, Korea University of Science and Technology, Seoul, 02792, Republic of Korea
| | - Hyun-Do Jung
- Division of Materials Science and Engineering, Hanyang University, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Jung-Hoon Park
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
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de França GM, Felipe Junior J, de Freitas CTS, de Lucena HF, de Andrade ALDL, Galvão HC. Langerhans Cells Correlate With Macrophages for Defense Mechanisms in the Atrophic Epithelium of Radicular Cysts. Appl Immunohistochem Mol Morphol 2021; 29:606-612. [PMID: 33958525 DOI: 10.1097/pai.0000000000000919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 12/13/2020] [Indexed: 11/25/2022]
Abstract
Langerhans cells (LCs) play important roles in cell-mediated immune reactions, as well as in the pathogenesis of periapical lesions. The aim of this study is to evaluate the role of LCs in the proliferative epithelium of radicular cysts (RCs) and the release of the proinflammatory cytokine tumor necrosis factor α (TNF-α) associated with epithelial thickness. Thirty cases of RCs and 30 cases of residual RCs were randomly selected. Morphologic analysis was performed to evaluate the association between the inflammatory infiltrate, cystic epithelial thickness and lesion size, in addition to immunohistochemical assessment of CD1a, CD68, and TNF-α. The highest macrophage percentages and TNF-α scores were found in RCs (P=0.038 and 0.017, respectively). The largest number of LCs was observed in RCs (P=0.021), especially those exhibiting atrophic epithelium (P=0.05). In addition, LCs were positively correlated with the number of macrophages in both RCs and residual RCs (P=0.033 and 0.002, respectively). In contrast to LCs, the largest number of macrophages was detected in cases with an intense inflammatory infiltrate (P=0.022). In addition, the highest TNF-α scores were associated with an intense inflammatory infiltrate (P=0.024) when analyzed in the capsule of RCs (P=0.017). In conclusion, LCs participate in defense mechanisms and were present in all cases evaluated. Along with macrophages, these cells release proinflammatory cytokines such as TNF-α, which is responsible for inducing the continued proliferation of cystic epithelium.
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Affiliation(s)
- Glória M de França
- Department of Dentistry, Oral Pathology Postgraduate Program, Federal University of Rio Grande do Norte (UFRN), Natal, RN
| | - Joaquim Felipe Junior
- Department of Dentistry, Oral Pathology Postgraduate Program, Federal University of Rio Grande do Norte (UFRN), Natal, RN
| | - Camila T S de Freitas
- Department of Dentistry, Oral Pathology Postgraduate Program, Federal University of Rio Grande do Norte (UFRN), Natal, RN
| | - Hévio F de Lucena
- Department of Dentistry, Oral Pathology Postgraduate Program, Federal University of Rio Grande do Norte (UFRN), Natal, RN
| | - Ana L D L de Andrade
- Department of Human Anatomy, Biomedical Science Institute, Federal University of Alfenas (UNIFAL), Alfenas, MG, Brazil
| | - Hébel C Galvão
- Department of Dentistry, Oral Pathology Postgraduate Program, Federal University of Rio Grande do Norte (UFRN), Natal, RN
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Dey P. Targeting gut barrier dysfunction with phytotherapies: Effective strategy against chronic diseases. Pharmacol Res 2020; 161:105135. [PMID: 32814166 DOI: 10.1016/j.phrs.2020.105135] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/06/2020] [Accepted: 08/07/2020] [Indexed: 02/08/2023]
Abstract
The intestinal epithelial layer serves as a physical and functional barrier between the microbe-rich lumen and immunologically active submucosa; it prevents systemic translocation of microbial pyrogenic products (e.g. endotoxin) that elicits immune activation upon translocation to the systemic circulation. Loss of barrier function has been associated with chronic 'low-grade' systemic inflammation which underlies pathogenesis of numerous no-communicable chronic inflammatory disease. Thus, targeting gut barrier dysfunction is an effective strategy for the prevention and/or treatment of chronic disease. This review intends to emphasize on the beneficial effects of herbal formulations, phytochemicals and traditional phytomedicines in attenuating intestinal barrier dysfunction. It also aims to provide a comprehensive understanding of intestinal-level events leading to a 'leaky-gut' and systemic complications mediated by endotoxemia. Additionally, a variety of detectable markers and diagnostic criteria utilized to evaluate barrier improving capacities of experimental therapeutics has been discussed. Collectively, this review provides rationale for targeting gut barrier dysfunction by phytotherapies for treating chronic diseases that are associated with endotoxemia-induced systemic inflammation.
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Affiliation(s)
- Priyankar Dey
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, Punjab, India.
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Wu YH, Hu KY, Kuo YS, Chiang CP. Bilateral cementoblastomas of the two mandibular first molars. J Formos Med Assoc 2018; 118:530-532. [PMID: 30348491 DOI: 10.1016/j.jfma.2018.09.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 09/26/2018] [Indexed: 10/28/2022] Open
Affiliation(s)
- Yu-Hsueh Wu
- Department of Dentistry, Far Eastern Memorial Hospital, New Taipei City, Taiwan; Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Kwang-Yu Hu
- Department of Dentistry, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Ying-Shiung Kuo
- Department of Dentistry, Far Eastern Memorial Hospital, New Taipei City, Taiwan; Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chun-Pin Chiang
- Department of Dentistry, Far Eastern Memorial Hospital, New Taipei City, Taiwan; Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan; Graduate Institute of Oral Biology, School of Dentistry, National Taiwan University, Taipei, Taiwan.
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Embaló B, Parize HN, Rivero ERC. Evaluation of cell proliferation in cystic lesions associated with impacted third molars. Microsc Res Tech 2018; 81:1241-1245. [DOI: 10.1002/jemt.23128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 08/03/2018] [Accepted: 08/20/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Bubacar Embaló
- Postgraduate Program in Dentistry, Health Sciences CenterFederal University of Santa Catarina Florianópolis Santa Catarina Brazil
| | - Hian Nivaldo Parize
- Undergraduate Course in Dentistry, Health Sciences CenterFederal University of Santa Catarina Florianópolis Santa Catarina Brazil
| | - Elena Riet Correa Rivero
- Department of Pathology, Health Sciences CenterFederal University of Santa Catarina Florianópolis Santa Catarina Brazil
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Lin HY, Chiang CP, Wang YP, Yu-Fong Chang J. Metastatic lung carcinoma in the right maxilla. J Formos Med Assoc 2018; 117:1130-1132. [PMID: 30170876 DOI: 10.1016/j.jfma.2018.08.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 08/10/2018] [Indexed: 10/28/2022] Open
Affiliation(s)
- Hung Ying Lin
- Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan; Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Chun-Pin Chiang
- Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan; Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan; Graduate Institute of Oral Biology, School of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Yi-Ping Wang
- Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan; Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan; Graduate Institute of Oral Biology, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Julia Yu-Fong Chang
- Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan; Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan; Graduate Institute of Oral Biology, School of Dentistry, National Taiwan University, Taipei, Taiwan.
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Chang CH, Wu YC, Wu YH, Sun A, Kuo YS, Chiang CP. S100 protein-positive Langerhans cells in 80 dentigerous cysts. J Dent Sci 2017; 12:405-412. [PMID: 30895082 PMCID: PMC6395349 DOI: 10.1016/j.jds.2017.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND/PURPOSE Langerhans cells (LCs) are antigen-presenting cells. This study assessed the LC counts in 80 dentigerous cysts (DCs). MATERIALS AND METHODS The S100-positive LC numbers in the lining epithelia and subepithelial connective tissues were counted at 80 DC sites without inflammation, 33 DC sites with mild/moderate inflammation, and 9 DC sites with severe inflammation from 80 DC specimens. RESULTS The mean S100-positive LC counts in the lining epithelia and subepithelial connective tissues increased significantly from no inflammation (0.6 ± 0.6 and 0.7 ± 0.6 cell/high-power field or HPF, respectively) through mild/moderate inflammation (8.1 ± 2.0 and 4.5 ± 2.3 cells/HPF, respectively) to severe inflammation DC sites (21.0 ± 7.0 and 11.1 ± 6.5 cells/HPF, respectively; P-value < 0.001). DC sites with inflammation had thicker lining epithelia than those without inflammation. Moreover, the mean LC counts in the lining epithelia and subepithelial connective tissues of DCs were significantly higher in the thicker lining epithelium (>50 μm) group (8.6 ± 7.1 and 4.8 ± 4.5 cells/HPF, respectively) than in the thinner lining epithelium (≦50 μm) group (0.6 ± 0.6 and 0.6 ± 0.6 cells/HPF, respectively; both P-values < 0.001). CONCLUSION A significant association of high-grade inflammation and thick lining epithelium with the increased LC number in DCs is found. Very few LCs in the lining epithelia of DCs without inflammation indicate the reduced immunosurveillance ability against DC lining epithelial cells in DC patients. It needs further studies to confirm the role of reduced immunosurveillance in the enlargement of the DC.
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Affiliation(s)
- Chun-Han Chang
- Graduate Institute of Oral Biology, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Yang-Che Wu
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
- Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yu-Hsueh Wu
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
- Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Dentistry, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Andy Sun
- Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ying-Shiung Kuo
- Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Dentistry, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Chun-Pin Chiang
- Graduate Institute of Oral Biology, School of Dentistry, National Taiwan University, Taipei, Taiwan
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
- Department of Dentistry, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
- Department of Dentistry, Far Eastern Memorial Hospital, New Taipei City, Taiwan
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