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Mesenchymal cells transplant,retinitis pigmentosa

Juan Yang, Maosong Xie, Weidong Zheng, Jianzhang Hu, Qiang Qu
Objective To investigate the potential of the treatment of growth-associated protein 43 (GAP43) gene-modified bone marrow-derived mesenchymal stem cells (BMSCs) for retinitis pigmentosa (RP). Methods BMSCs were isolated and cultured by adherence method. By transfecting GAP43 gene into BMSCs via a lentivirus vector, we got GAP43 gene-modified BMSCs. Sixty-three Royal College of Surgeons (RCS) rats were randomly divided into three groups: experimental group, negative control group and blank control group. The experimental rats received subretinal injection of GAP43 gene-modified BMSCs...
August 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
Yizhi Liu, Jing Wang, Yan Luo, Shuyi Chen, Michelle Lewallen, Ting Xie
PURPOSE: Millions worldwide have visual impairments caused by dysfunctional eye components, including cornea, lens, retina, and optic nerve, or the visual cortex in the brain. Insufficient cornea donation and inherent artificial lens problems demand alternative treatment strategies for cornea diseases and cataracts, whereas retinal degenerative diseases, including glaucoma, macular degeneration, and retinitis pigmentosa, still lack effective treatments. Stem cells have been investigated for their potential in various eye-specific pathologies to replace lost retinal ganglion cells and photoreceptors in retinal degenerative diseases and toward engineering transplantable patient-specific cornea or lens...
March 2013: Asia-Pacific Journal of Ophthalmology
Jianan Sun, Michiko Mandai, Hiroyuki Kamao, Tomoyo Hashiguchi, Masayuki Shikamura, Shin Kawamata, Sunao Sugita, Masayo Takahashi
Retinitis pigmentosa (RP) is a group of visual impairments characterized by progressive rod photoreceptor cell loss due to a genetic background. Pigment epithelium-derived factor (PEDF) predominantly secreted by the retinal pigmented epithelium (RPE) has been reported to protect photoreceptors in retinal degeneration models, including rd1. In addition, clinical trials are currently underway outside Japan using human mesenchymal stromal cells and human neural stem cells to protect photoreceptors in RP and dry age-related macular degeneration, respectively...
May 2015: Stem Cells
Qian Jian, Yaochen Li, Zheng Qin Yin
Müller cells can completely repair retinal injury by acting as endogenous stem/progenitor cells in lower-order vertebrates. However, a safe and effective approach to activate progenitor potential of retinal Müller cells in higher-order vertebrates, which rarely re-enter the cell cycle, is a bottleneck problem. In the present study, Royal College of Surgeon's (RCS) rats were subjected to rat bone marrow mesenchymal stem cells (rBMSCs) subretinal space transplantation. Electroretinography (ERG) recordings showed that the b-wave amplitudes and ONL thicknesses statistically increased after transplantation...
March 2015: Experimental Eye Research
Tai-Chi Lin, Chih-Chien Hsu, Ke-Hung Chien, Kuo-Hsuan Hung, Chi-Hsien Peng, Shih-Jen Chen
The retina, histologically composed of ten delicate layers, is responsible for light perception and relaying electrochemical signals to the secondary neurons and visual cortex. Retinal disease is one of the leading clinical causes of severe vision loss, including age-related macular degeneration, Stargardt's disease, and retinitis pigmentosa. As a result of the discovery of various somatic stem cells, advances in exploring the identities of embryonic stem cells, and the development of induced pluripotent stem cells, cell transplantation treatment for retinal diseases is currently attracting much attention...
November 2014: Journal of the Chinese Medical Association: JCMA
Yuxi He, Yan Zhang, Xin Liu, Emma Ghazaryan, Ying Li, Jianan Xie, Guanfang Su
Retinitis pigmentosa (RP) is a group of inherited retinal disorders characterized by progressive loss of photoreceptors and eventually leads to retina degeneration and atrophy. Until now, the exact pathogenesis and etiology of this disease has not been clear, and many approaches for RP therapies have been carried out in animals and in clinical trials. In recent years, stem cell transplantation-based attempts made some progress, especially the transplantation of bone marrow-derived mesenchymal stem cells (BMSCs)...
2014: International Journal of Molecular Sciences
Tsz Kin Ng, Veronica R Fortino, Daniel Pelaez, Herman S Cheung
Complex circuitry and limited regenerative power make central nervous system (CNS) disorders the most challenging and difficult for functional repair. With elusive disease mechanisms, traditional surgical and medical interventions merely slow down the progression of the neurodegenerative diseases. However, the number of neurons still diminishes in many patients. Recently, stem cell therapy has been proposed as a viable option. Mesenchymal stem cells (MSCs), a widely-studied human adult stem cell population, have been discovered for more than 20 years...
April 26, 2014: World Journal of Stem Cells
Samad Nadri, Bahram Kazemi, Mohamadreza Baghaban Eslaminejad, Mohamadreza Baghaban Eeslaminejad, Shahin Yazdani, Masoud Soleimani
Transplantation of stem cells using biodegradable and biocompatible nanofibrous scaffolds is a promising therapeutic approach for treating inherited retinal degenerative diseases such as retinitis pigmentosa and age-related macular degeneration. In this study, conjunctiva mesenchymal stem cells (CJMSCs) were seeded onto poly-L-lactic acid (PLLA) nanofibrous scaffolds and were induced to differentiate toward photoreceptor cell lineages. Furthermore, the effects of orientation of scaffold on photoreceptor differentiation were examined...
June 2013: Molecular Biology Reports
Samad Nadri, Shahin Yazdani, Ehsan Arefian, Zahra Gohari, Mohamadreza Baghaban Eslaminejad, Bahram Kazemi, Masoud Soleimani
Stem cell therapy is a promising approach for treatment of degenerative retinal disorders such as retinitis pigmentosa (RP) and age-related macular degeneration (AMD). In this study, human mesenchymal stem cells (MSCs) were isolated from the trabecular meshwork (TM), the major functional tissue of the anterior chamber angle in the eye, were characterized and differentiated into photoreceptor cells on amniotic membrane (AM). After isolation of trabecular meshwork and culture of the stromal segment of this tissue, fibroblast-like cells (CD105(+), CD90(+), CD44(+), CD166(+) cells) capable of differentiation toward mesenchymal and photoreceptor lineages were obtained...
April 29, 2013: Neuroscience Letters
Dong-Mei Huo, Fang-Tian Dong, Wei-Hong Yu, Fei Gao
UNLABELLED: CORRESPONDENCE TO: Fang-Tian Dong. Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China. AIM: To access the differentiation of rat mesenchymal stem cell (MSC) in the microenvironment of retinal degeneration induced by the administration of sodium iodate. METHODS: In-vitro cultured Lewis rat MSC were injected into the sub-retinal space of NaIO(3) induced retinal degeneration rat eyes (30g/L NaIO(3) 100mg/kg)...
2010: International Journal of Ophthalmology
Anat Yanai, Urs O Häfeli, Andrew L Metcalfe, Peter Soema, Lois Addo, Cheryl Y Gregory-Evans, Kelvin Po, Xianghong Shan, Orson L Moritz, Kevin Gregory-Evans
Developing new ways of delivering cells to diseased tissue will be a key factor in translating cell therapeutics research into clinical use. Magnetically targeting cells enables delivery of significant numbers of cells to key areas of specific organs. To demonstrate feasibility in neurological tissue, we targeted cells magnetically to the upper hemisphere of the rodent retina. Rat mesenchymal stem cells (MSCs) were magnetized using superparamagnetic iron oxide nanoparticles (SPIONs). In vitro studies suggested that magnetization with fluidMAG-D was well tolerated, that cells remained viable, and they retained their differentiation capabilities...
2012: Cell Transplantation
Shaomei Wang, Bin Lu, Sergei Girman, Jie Duan, Trevor McFarland, Qing-shuo Zhang, Markus Grompe, Grazyna Adamus, Binoy Appukuttan, Raymond Lund
BACKGROUND: Retinitis pigmentosa (RP) is characterized by progressive night blindness, visual field loss, altered vascular permeability and loss of central vision. Currently there is no effective treatment available except gene replacement therapy has shown promise in a few patients with specific gene defects. There is an urgent need to develop therapies that offer generic neuro-and vascular-protective effects with non-invasive intervention. Here we explored the potential of systemic administration of pluripotent bone marrow-derived mesenchymal stem cells (MSCs) to rescue vision and associated vascular pathology in the Royal College Surgeons (RCS) rat, a well-established animal model for RP...
2010: PloS One
Raymond D Lund, Shaomei Wang, Bin Lu, Sergej Girman, Toby Holmes, Yves Sauvé, Darin J Messina, Ian R Harris, Anthony J Kihm, Alexander M Harmon, Feng-Yi Chin, Anna Gosiewska, Sanjay K Mistry
Progressive photoreceptor degeneration resulting from genetic and other factors is a leading and largely untreatable cause of blindness worldwide. The object of this study was to find a cell type that is effective in slowing the progress of such degeneration in an animal model of human retinal disease, is safe, and could be generated in sufficient numbers for clinical application. We have compared efficacy of four human-derived cell types in preserving photoreceptor integrity and visual functions after injection into the subretinal space of the Royal College of Surgeons rat early in the progress of degeneration...
March 2007: Stem Cells
S Arnhold, Y Absenger, H Klein, K Addicks, U Schraermeyer
BACKGROUND: Retinitis pigmentosa belongs to a large group of degenerative diseases of the retina with a hereditary background. It involves loss of retinal photoreceptor cells and consequently peripheral vision. At present there are no satisfactory therapeutic options for this disease. Just recently the use of mesenchymal stem cells has been discussed as one therapeutical option for retinal degeneration, as they have been shown to differentiate into various cell types, including photoreceptor cells...
March 2007: Graefe's Archive for Clinical and Experimental Ophthalmology
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