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Mesenchymal stem cell conditioned medium improves hypoxic injury to protect islet graft function.
Zhong Nan Da Xue Xue Bao Yi Xue Ban
August 2024
Department of Radiology, Third Xiangya Hospital, Central South University, Changsha 410013, China.
Objectives: Islet transplantation is one of the most promising curative methods for type 1 diabetes mellitus (T1DM), but early hypoxic death of the graft post-transplantation impedes successful treatment. To improve the efficacy of islet transplantation and enhance islet cell resistance to hypoxia, reducing hypoxic injury before revascularization is crucial. Mesenchymal stem cells (MSCs) are known to regulate immune responses and protect against hypoxic damage through paracrine mechanisms.
View Article and Find Full Text PDFInhibition of Vascular Endothelial Growth Factor Reduces Photoreceptor Death in Retinal Neovascular Disease via Neurotrophic Modulation in Müller Glia.
Mol Neurobiol
January 2025
Department of Ophthalmology, Ruijin Hospital, Affiliated Shanghai Jiaotong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China.
VEGF is not only the most potent angiogenic factor, but also an important neurotrophic factor. In this study, vitreous expression of six neurotrophic factors were examined in proliferative diabetic retinopathy (PDR) patients with prior anti-VEGF therapy (n = 48) or without anti-VEGF treatment (n = 41) via ELISA. Potential source, variation and impact of these factors were further investigated in a mouse model of oxygen-induced retinopathy (OIR), as well as primary Müller cells and 661W photoreceptor cell line under hypoxic condition.
View Article and Find Full Text PDFLFA-1: A potential key player in microglia-mediated neuroprotection against oxygen-glucose deprivation in vitro.
PLoS One
January 2025
Medical Faculty, Department of Neurology, Otto von Guericke University, Magdeburg, Germany.
For the last 38 years, all neuroprotective agents for patients with ischemic stroke have failed in clinical trials. The innate immune system, particularly microglia, is a much-discussed target for neuroprotective agents. Promising results for neuroprotection by inhibition of integrins with drugs such as natalizumab in animal stroke models have not been translated into clinical practice.
View Article and Find Full Text PDFVitamin D as an add-on therapy to phosphodiesterase-5 inhibitor in experimental pulmonary arterial hypertension.
Am J Physiol Lung Cell Mol Physiol
January 2025
Department of Pharmacology and Toxicology. School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.
Severe vitamin D (vitD) deficiency is a very common condition in patients with pulmonary arterial hypertension (PAH) and it is predictor of poor prognosis. There is emerging evidence suggesting a connection between the insufficient response to phosphodiesterase-5 inhibitors (PDE5i) and vitD deficiency in patients with PAH. In the present translational study, vitD deficiency was induced in Wistar rats by exposure to vitD free diet for 5 weeks and followed by Su5416 administration and hypoxia (10%) for 3 weeks, a standard experimental model of PAH.
View Article and Find Full Text PDFBiomarkers.
Alzheimers Dement
December 2024
Geriatric Research Education and Clinical Center William S. Middleton VA Hospital, Madison, WI, USA.
Background: Obstructive sleep apnea (OSA) is associated with hypoxia-induced neuronal impairment and dysfunction-key risk factors for the pathogeneses of age-related neurodegenerative diseases such as Alzheimer's disease (AD). This study examined longitudinal associations between OSA severity and CSF biomarkers associated with AD, synaptic dysfunction, and neuroinflammation in a sample of late-middle-aged adults with increased risk for AD.
Method: N=25 cognitively unimpaired adults (64% female, mean age 65.
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