Lysophosphatidylcholine Offsets the Protective Effects of Bone Marrow Mesenchymal Stem Cells on Inflammatory Response and Oxidative Stress Injury of Retinal Endothelial Cells via TLR4/NF- κ B Signaling

J Immunol Res. 2021 Oct 14;2021:2389029. doi: 10.1155/2021/2389029. eCollection 2021.ABSTRACTDiabetic retinopathy (DR), as a major cause of blindness worldwide, is one common complication of diabetes mellitus. Inflammatory response and oxidative stress injury of endothelial cells play significant roles in the pathogenesis of DR. The study is aimed at investigating the effects of lysophosphatidylcholine (LPC) on the dysfunction of high glucose- (HG-) treated human retinal microvascular endothelial cells (HRMECs) after being cocultured with bone marrow mesenchymal stem cells (BMSCs) and the underlying regulatory mechanism. Coculture of BMSCs and HRMECs was performed in transwell chambers. The activities of antioxidant-related enzymes and molecules of oxidative stress injury and the contents of inflammatory cytokines were measured by ELISA. Flow cytometry analyzed the apoptosis of treated HRMECs. HRMECs were further treated with 10-50 μg/ml LPC to investigate the effect of LPC on the dysfunction of HRMECs. Western blotting was conducted to evaluate levels of TLR4 and p-NF-κB proteins. We found that BMSCs alleviated HG-induced inflammatory response and oxidative stress injury of HRMECs. Importantly, LPC offsets the protective effects of BMSCs on inflammatory response and oxidative stress injury of HRMECs. Furthermore, LPC upregulated the protein levels of TLR4 and p-NF-κB, activating the TLR4/NF-κB signaling pathway. Overall, our study demonstrated that LPC o...
Source: Journal of Immunology Research - Category: Allergy & Immunology Authors: Source Type: research

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Contributors : Wei Zhang ; Chang Chen ; Liyuan Han ; Shiwei DuanSeries Type : Methylation profiling by high throughput sequencingOrganism : Homo sapiensDiabetic retinopathy (DR) is a common microvascular complication that may cause severe visual impairment and blindness in patients with type 2 diabetes mellitus (T2DM). Early detection of DR will provide opportunities for more treatment options and better control of disease progression. Effective biomarkers, which are not currently available, may improve clinical outcomes through precise diagnosis and prognosis. We sought to develop a non-invasive diagnostic approach for di...
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Methylation profiling by high throughput sequencing Homo sapiens Source Type: research
uo;Annunzio Wolfram Syndrome (WS) is a rare neurodegenerative disease with autosomal recessive inheritance and characterized by juvenile onset, non-autoimmune diabetes mellitus and later followed by optic atrophy leading to blindness, diabetes insipidus, hearing loss, and other neurological and endocrine dysfunctions. A wide spectrum of neurodegenerative abnormalities affecting the central nervous system has been described. Among these complications, neurogenic bladder and urodynamic abnormalities also deserve attention. Urinary tract dysfunctions (UTD) up to end stage renal disease are a life-threatening complication ...
Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Review Source Type: research
Biomed Pharmacother. 2021 Nov 5:112138. doi: 10.1016/j.biopha.2021.112138. Online ahead of print.ABSTRACTDiabetes mellitus (DM) is a metabolic disorder with growing global incidence, as 387 million people were diagnosed in 2014 with an expected projection of 642 million in 2040. Several complications are associated with DM including heart attack, stroke, kidney failure, blindness, and cancer. The latter is the second leading cause of death worldwide accounting for one in every six deaths, with liver, pancreas, and endometrium cancers are the most abundant among patients with diabetes. Phosphoinositide 3-kinase (PI3K)/prote...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - Category: Drugs & Pharmacology Authors: Source Type: research
This study will generate evidence-based data on the treatment of T2DM with acupuncture combined with Chinese herbal medicine and will provide new ideas and treatment modalities to investigate in future research.
Source: Medicine - Category: Internal Medicine Tags: Research Article: Study Protocol Systematic Review Source Type: research
Indian J Ophthalmol. 2021 Nov;69(11):3072-3075. doi: 10.4103/ijo.IJO_1117_21.ABSTRACTThe burden of diabetes mellitus (DM) and diabetic retinopathy (DR) is at alarming proportions in India and around the globe. The number of people with DM in India is estimated to increase to over 134 million by 2045. Screening and early identification of sight-threatening DR are proven ways of reducing DR-related blindness. An ideal DR screening model should include personalized awareness, targeted screening, integrated follow-up reminders, and capacity building. The DR screening technology is slowly shifting from direct examination by an ...
Source: Rural Remote Health - Category: Rural Health Authors: Source Type: research
CONCLUSIONS: Results of our study support the hypothesis that D-allele and DD-genotype of rs35569394 have deleterious effect on the progression of DR. C-allele had skewed frequency towards DR III subjects owing to strong linkage disequilibrium between C-allele (rs699947) and D-allele (rs35569394).PMID:34693874 | DOI:10.1080/13816810.2021.1992786
Source: Ophthalmic Genetics - Category: Opthalmology Authors: Source Type: research
ConclusionWe found that the serum apo B to serum apo A ratio is higher in the diabetic patient with proliferative diabetic retinopathy than the diabetic patient with non-proliferative diabetic retinopathy. Which is higher than the diabetic patient without retinopathy. Drawing attention to the possible relationship between the serum apo B to serum apo A ratio and the progression of diabetic retinopathy. We found a highly significant difference regarding triglycerides, total cholesterol, Apo B and B/A ratio being higher in diabetic patient with proliferative diabetic retinopathy than diabetic patient with non- proliferative ...
Source: QJM - Category: Internal Medicine Source Type: research
CONCLUSION: The prevalence of DR among our study patients was very high. Longer duration of diabetes, higher systolic blood pressure, baseline age <60 years, use of insulin alone, and use of combination of insulin with OHA were independently associated with DR. Health education, early screening, and treatment are recommended.
Source: Middle East African Journal of Ophthalmology - Category: Opthalmology Authors: Source Type: research
Conclusions: Type 2 diabetic patients with earlier-grade DR appeared to exhibit more rapid development to the next grade in our study. As these findings show, more frequent fundus color photography follow-up in earlier-grade DR patients is important to slow DR progression and awaken self-perception.
Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Article Source Type: research
Exp Eye Res. 2021 Aug 31;211:108751. doi: 10.1016/j.exer.2021.108751. Online ahead of print.ABSTRACTDiabetic retinopathy is a major complication of chronic hyperglycemia and a leading cause of blindness in developed countries. In the present study the interaction between diabetes and retinal clocks was investigated in mice. It was seen that in the db/db mouse - a widely used animal model of diabetic retinopathy - clock function and circadian regulation of gene expression was disturbed in the retina. Remarkably, elimination of clock function by Bmal1-deficiency mitigates the progression of pathophysiology of the diabetic re...
Source: Experimental Eye Research - Category: Opthalmology Authors: Source Type: research
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