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Feng W, Wang L, Liu CJ, Zhang C. Skin characterization of diabetes mellitus revealed by polarization-sensitive optical coherence tomography imaging. JOURNAL OF BIOMEDICAL OPTICS 2024; 29:036003. [PMID: 38481479 PMCID: PMC10933388 DOI: 10.1117/1.jbo.29.3.036003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 01/18/2024] [Accepted: 02/28/2024] [Indexed: 03/24/2024]
Abstract
Significance Diabetes can lead to the glycation of proteins and dysfunction of skin collagen. Skin lesions are a prevalent clinical symptom of diabetes mellitus (DM). Early diagnosis and assessing the efficacy of treatment for DM are crucial for patient health management. However, performing a non-invasive skin assessment in the early stages of DM is challenging. Aim By using the polarization-sensitive optical coherent tomography (PS-OCT) imaging technique, it is possible to noninvasively assess the skin changes caused by diabetes. Approach The PS-OCT was used to monitor the polarization characteristics of mouse skin at different stages of diabetes. Results Based on a multi-layered adhesive tape model, we found that the polarization characteristics (retardation, optic axis, and polarization uniformity) were sensitive to the microstructure changes in the samples. Through this method, we observed significant changes in the polarization states of the skin as diabetes progressed. This was in line with the detected microstructure changes in skin collagen fibers using scanning electron microscopy. Conclusions This study presents a highly useful approach for non-invasive skin assessment of diabetes.
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Affiliation(s)
- Wei Feng
- Central People's Hospital of Zhanjiang, Zhanjiang Institute of Clinical Medicine, Zhanjiang, China
- Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
| | - Lisi Wang
- Central People's Hospital of Zhanjiang, Zhanjiang Institute of Clinical Medicine, Zhanjiang, China
- Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
| | - Chun-Jie Liu
- Huazhong University of Science and Technology, College of Life Science and Technology, Center for Artificial Intelligence Biology, Hubei Bioinformatics & Molecular Imaging Key Laboratory, Key Laboratory of Molecular Biophysics of the Ministry of Education, Wuhan, China
| | - Chao Zhang
- Central People's Hospital of Zhanjiang, Zhanjiang Institute of Clinical Medicine, Zhanjiang, China
- Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
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Wang Z, Feng C, Yang R, Liu T, Chen Y, Chen A, Yan B, Yuan Y, Zhang J. Large-Area Photoreceptor Degeneration Model in Rabbits by Photocoagulation and Oxidative Stress in the Retina. Front Neurosci 2021; 15:617175. [PMID: 34177442 PMCID: PMC8222581 DOI: 10.3389/fnins.2021.617175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 05/06/2021] [Indexed: 11/25/2022] Open
Abstract
Photocoagulation is used for the treatment of retinal ischemic disease. However, due to the invasive nature of photocoagulation and variety of melanin concentrations between individuals, it is challenging to avoid damaging the adjacent photoreceptors and inducing several side effects. Previous studies indicate the role of laser power, duration, and spot size on retinal lesions, but the effect of interspot distance of the laser pulses needs to be considered in panretinal photocoagulation. In this study, we examine different parameters of photocoagulation on lesions of the retina in rabbit, finding that the lesion level of the outer nuclear layer of the retina depended on the pulse duration and laser spot size, and decreasing interspot distance could completely abolish the photoreceptor layer. The degeneration of the photoreceptor by photocoagulation occurred in 24 h and was not restored afterward. We then conducted panretinal photocoagulation in rabbit and found that oxidative stress was decreased in the inner nuclear layer of the retina, and pupillary light reflex and ERG signals were impaired. Our study could provide a rabbit model to explore the mechanism of photoreceptor degeneration and therapies for the side effects after photocoagulation.
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Affiliation(s)
- Zhexuan Wang
- State Key Laboratory of Medical Neurobiology, Department of Ophthalmology, MOE Frontiers Center for Brain Science, Zhongshan Hospital, Institute for Brain Science, Fudan University, Shanghai, China.,Department of Ophthalmology, Eye and Ent Hospital of Fudan University, Shanghai, China
| | - Chenli Feng
- State Key Laboratory of Medical Neurobiology, Department of Ophthalmology, MOE Frontiers Center for Brain Science, Zhongshan Hospital, Institute for Brain Science, Fudan University, Shanghai, China.,Department of Ophthalmology, Eye and Ent Hospital of Fudan University, Shanghai, China
| | - Ruyi Yang
- State Key Laboratory of Medical Neurobiology, Department of Ophthalmology, MOE Frontiers Center for Brain Science, Zhongshan Hospital, Institute for Brain Science, Fudan University, Shanghai, China.,Department of Ophthalmology, Eye and Ent Hospital of Fudan University, Shanghai, China
| | - Tingting Liu
- Department of Ophthalmology, Eye and Ent Hospital of Fudan University, Shanghai, China
| | - Yin Chen
- Key Laboratory of Brain Functional Genomics, Primate Research Center, East China Normal University, Shanghai, China
| | - Aihua Chen
- Key Laboratory of Brain Functional Genomics, Primate Research Center, East China Normal University, Shanghai, China
| | - Biao Yan
- State Key Laboratory of Medical Neurobiology, Department of Ophthalmology, MOE Frontiers Center for Brain Science, Zhongshan Hospital, Institute for Brain Science, Fudan University, Shanghai, China
| | - Yuanzhi Yuan
- State Key Laboratory of Medical Neurobiology, Department of Ophthalmology, MOE Frontiers Center for Brain Science, Zhongshan Hospital, Institute for Brain Science, Fudan University, Shanghai, China
| | - Jiayi Zhang
- State Key Laboratory of Medical Neurobiology, Department of Ophthalmology, MOE Frontiers Center for Brain Science, Zhongshan Hospital, Institute for Brain Science, Fudan University, Shanghai, China
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Chen L, Wu H, Ren C, Liu G, Zhang W, Liu W, Lu P. Inhibition of PDGF-BB reduces alkali-induced corneal neovascularization in mice. Mol Med Rep 2021; 23:238. [PMID: 33537811 PMCID: PMC7893695 DOI: 10.3892/mmr.2021.11877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 01/08/2021] [Indexed: 12/13/2022] Open
Abstract
The aim of the present study was to investigate the role of platelet-derived growth factor (PDGF)-BB/PDGF receptor (R)-β signaling in an experimental murine corneal neovascularization (CrNV) model. Experimental CrNV was induced by alkali injury. The intra-corneal expression of PDGF-BB was examined using immunohistochemistry. The effect of PDGF-BB on CrNV was evaluated using immunofluorescence staining. The expression levels of PDGFR-β in human retinal endothelial cells (HRECs) under normal conditions or following cobalt chloride treatment, which induced hypoxic conditions, was assessed using reverse transcription-quantitative PCR. The effect of exogenous treatment of PDGF-BB on the proliferation, migration and tube formation of HRECs under normoxic or hypoxic conditions was evaluated in vitro using Cell Counting Kit-8, wound healing and 3D Matrigel capillary tube formation assays, respectively. The results indicated that the intra-corneal expression levels of the proteins of PDGF-BB and PDGFR-β were detectable on days 2 and 7 following alkali injury. The treatment with neutralizing anti-PDGF-BB antibody resulted in significant inhibition of CrNV. The intra-corneal expression levels of vascular endothelial growth factor A, matrix metallopeptidase (MMP)-2 and MMP-9 proteins were downregulated, while the expression levels of thrombospondin (TSP)-1, TSP-2, a disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS)-1 and ADAMTS-2 were upregulated significantly in mice treated with anti-PDGF-BB antibody. The expression levels of PDGFR-β were upregulated in HRECs under hypoxic conditions compared with those noted under normoxic conditions. Recombinant human PDGF-BB promoted the proliferation, migration and tube formation of HRECs under hypoxic conditions. The data indicated that PDGF-BB/PDGFR-β signaling was involved in CrNV and that it promoted endothelial cell proliferation, migration and tube formation. The pro-angiogenic effects of this pathway may be mediated via the induction of pro-angiogenic cytokine secretion and the suppression of anti-angiogenic cytokine secretion.
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Affiliation(s)
- Lei Chen
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Hongya Wu
- Jiangsu Key Laboratory of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Chi Ren
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Gaoqin Liu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Wenpeng Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Weiming Liu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Peirong Lu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
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