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fenofibrate in diabetic retinopathy

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https://www.readbyqxmd.com/read/28270521/pathogenic-role-of-microrna-21-in-diabetic-retinopathy-through-down-regulation-of-ppar%C3%AE
#1
Qian Chen, Fangfang Qiu, Kelu Zhou, H Greg Matlock, Yusuke Takahashi, Raju V S Rajala, Yanhui Yang, Elizabeth Moran, Jian-Xing Ma
Fenofibrate, a specific agonist of peroxisome proliferator-activated receptor alpha (PPARα), displays robust therapeutic effects on diabetic retinopathy (DR) in type 2 diabetic patients. Our recent studies have shown that PPARα is down-regulated in the diabetic retina, which contributes to the pathogenesis of DR. However, the mechanism for diabetes-induced down-regulation of PPARα remains unknown. We investigated the role of microRNA-21 (miR-21) in regulating PPARα in DR. MiR-21 was over-expressed, while PPARα levels were decreased in the retina of db/db mice, a type 2 diabetic model...
March 7, 2017: Diabetes
https://www.readbyqxmd.com/read/28247336/the-role-of-dyslipidemia-control-in-the-progression-of-diabetic-retinopathy-in-patients-with-type-2-diabetes-mellitus
#2
Irini P Chatziralli
Diabetic retinopathy (DR) is a common microvascular complication of diabetes mellitus (DM) and is considered as the leading cause of visual impairment in working-aged adults worldwide. Dyslipidemia has been associated with DR, but not with progression to the proliferative form of DR, although the exact role in the pathogenesis of DR and diabetic macular edema (DME) remains controversial. As a result, a reasonable question arising is whether control of dyslipidemia may alter the course of DR. Statins do not appear to have an impact on DR progression...
April 2017: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/28138358/role-of-lipid-lowering-agents-in-the-management-of-diabetic-retinopathy
#3
EDITORIAL
Estelle Ioannidou, Vasilis-Spyridon Tseriotis, Konstantinos Tziomalos
Diabetic retinopathy affects a substantial proportion of patients with diabetes mellitus (DM) and is the leading cause of blindness in working-aged adults. Even though the incidence of diabetic retinopathy has declined in the last decades, its prevalence increased and is expected to rise further as a result of the increasing incidence of type 2 DM (T2DM) and the longer life expectancy of patients with DM. The pathogenesis of diabetic retinopathy is multifactorial. Some observational studies suggested an association between dyslipidemia and the development and progression of retinopathy in patients with DM but others did not confirm this association...
January 15, 2017: World Journal of Diabetes
https://www.readbyqxmd.com/read/27996196/reverse-translational-study-of-fenofibrate-s-observed-effects-in-diabetes-associated-retinopathy
#4
R A Farris, E T Price
Clinical trials suggest that fenofibrate reduces the progression of retinopathies in patients with type 2 diabetes. Furthermore, patients with retinopathies have elevated levels of inflammatory chemokines and dysfunctional retinal angiogenesis. Therefore, we investigated the effects of fenofibrate on the production of inflammatory chemokines and genes associated with angiogenesis. Retinal pigment epithelial cells (RPECs) were cultured with IL-1β and fenofibrate ranging from 1-50 μM. ENA-78, IL-8, and RANTES were measured in cell culture by ELISA...
March 2017: Clinical and Translational Science
https://www.readbyqxmd.com/read/27973425/zerumbone-a-bioactive-sesquiterpene-ameliorates-diabetes-induced-retinal-microvascular-damage-through-inhibition-of-phospho-p38-mitogen-activated-protein-kinase-and-nuclear-factor-%C3%AE%C2%BAb-pathways
#5
Wayne Young Liu, Thing-Fong Tzeng, I-Min Liu
Zerumbone ameliorates retinal damage by blocking advanced glycation end products and their receptor system in streptozotocin-diabetic rats. Because of the multiple factors involved in diabetic retinopathy (DR) etiology, the mechanisms of zerumbone that are mainly responsible for its ameliorative effect on DR need to be further clarified. In the present study, zerumbone (20 mg or 40 mg/kg) or fenofibric acid (100 mg/kg) was orally administered to diabetic rats by intragastric gavage once daily for three consecutive months...
December 11, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27720395/fenofibrate-inhibits-cytochrome-p450-epoxygenase-2c-activity-to-suppress-pathological-ocular-angiogenesis
#6
Yan Gong, Zhuo Shao, Zhongjie Fu, Matthew L Edin, Ye Sun, Raffael G Liegl, Zhongxiao Wang, Chi-Hsiu Liu, Samuel B Burnim, Steven S Meng, Fred B Lih, John Paul SanGiovanni, Darryl C Zeldin, Ann Hellström, Lois E H Smith
Neovascular eye diseases including retinopathy of prematurity, diabetic retinopathy and age-related-macular-degeneration are major causes of blindness. Fenofibrate treatment in type 2 diabetes patients reduces progression of diabetic retinopathy independent of its peroxisome proliferator-activated receptor (PPAR)α agonist lipid lowering effect. The mechanism is unknown. Fenofibrate binds to and inhibits cytochrome P450 epoxygenase (CYP)2C with higher affinity than to PPARα. CYP2C metabolizes ω-3 long-chain polyunsaturated fatty acids (LCPUFAs)...
November 2016: EBioMedicine
https://www.readbyqxmd.com/read/27525681/fenofibrate-and-diabetic-retinopathy
#7
REVIEW
Jared E Knickelbein, Akshar B Abbott, Emily Y Chew
Diabetic retinopathy, a common and sight-threatening microvascular complication of diabetes mellitus, is a leading cause of blindness among working-aged adults. Medical therapies including intensive control of hyperglycemia and hypertension have been shown to reduce the incidence and progression of diabetic retinopathy. The association of dyslipidemia and treatment with statins with diabetic retinopathy is inconsistent in epidemiologic studies. However, two recent randomized clinical trials have demonstrated beneficial effects of systemic fenofibrate therapy in reducing the progression of diabetic retinopathy independently of serum lipid levels...
October 2016: Current Diabetes Reports
https://www.readbyqxmd.com/read/27479624/vision-loss-in-older-adults
#8
REVIEW
Allen L Pelletier, Ledy Rojas-Roldan, Janis Coffin
Vision loss affects 37 million Americans older than 50 years and one in four who are older than 80 years. The U.S. Preventive Services Task Force concludes that current evidence is insufficient to assess the balance of benefits and harms of screening for impaired visual acuity in adults older than 65 years. However, family physicians play a critical role in identifying persons who are at risk of vision loss, counseling patients, and referring patients for disease-specific treatment. The conditions that cause most cases of vision loss in older patients are age-related macular degeneration, glaucoma, ocular complications of diabetes mellitus, and age-related cataracts...
August 1, 2016: American Family Physician
https://www.readbyqxmd.com/read/27334889/therapeutic-targeting-of-diabetic-retinal-neuropathy-as-a-strategy-in-preventing-diabetic-retinopathy
#9
REVIEW
Gabriela de Moraes, Christopher J Layton
Diabetes causes a panretinal neurodegeneration herein termed diabetic retinal neuropathy, which manifests in the retina early and progresses throughout the disease. Clinical manifestations include changes in the ERG, perimetry, dark adaptation, contrast sensitivity and colour vision which correlate with laboratory findings of thinning of the retinal neuronal layers, increased apoptosis in neurons and activation of glial cells. Possible mechanisms include oxidative stress, neuronal AGE accumulation, altered balance of neurotrophic factors and loss of mitohormesis...
December 2016: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/27267786/effect-of-micronized-fenofibrate-on-microvascular-complications-of-type-2-diabetes-a-systematic-review
#10
REVIEW
Leszek Czupryniak, Shashank R Joshi, Jaideep A Gogtay, Meena Lopez
OBJECTIVE: Micronized fenofibrate prevents the progression of microvascular complications in type 2 diabetes, but no systematic review has summarized these effects. Therefore, we performed a systematic review to investigate the effects of micronized fenofibrate on type 2 diabetes-related microvascular complications. RESEARCH DESIGN AND METHODS: The PubMed database was systematically searched for trials in English language published between January 1990 and November 2015 that examined the effects of fenofibrate on microvascular complications in patients with type 2 diabetes...
August 2016: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/27073156/estimation-of-adjusted-rate-differences-using-additive-negative-binomial-regression
#11
Mark W Donoghoe, Ian C Marschner
Rate differences are an important effect measure in biostatistics and provide an alternative perspective to rate ratios. When the data are event counts observed during an exposure period, adjusted rate differences may be estimated using an identity-link Poisson generalised linear model, also known as additive Poisson regression. A problem with this approach is that the assumption of equality of mean and variance rarely holds in real data, which often show overdispersion. An additive negative binomial model is the natural alternative to account for this; however, standard model-fitting methods are often unable to cope with the constrained parameter space arising from the non-negativity restrictions of the additive model...
August 15, 2016: Statistics in Medicine
https://www.readbyqxmd.com/read/26676667/biomarkers-in-diabetic-retinopathy
#12
REVIEW
Alicia J Jenkins, Mugdha V Joglekar, Anandwardhan A Hardikar, Anthony C Keech, David N O'Neal, Andrzej S Januszewski
There is a global diabetes epidemic correlating with an increase in obesity. This coincidence may lead to a rise in the prevalence of type 2 diabetes. There is also an as yet unexplained increase in the incidence of type 1 diabetes, which is not related to adiposity. Whilst improved diabetes care has substantially improved diabetes outcomes, the disease remains a common cause of working age adult-onset blindness. Diabetic retinopathy is the most frequently occurring complication of diabetes; it is greatly feared by many diabetes patients...
April 2015: Review of Diabetic Studies: RDS
https://www.readbyqxmd.com/read/26676661/risk-factors-and-comorbidities-in-diabetic-neuropathy-an-update-2015
#13
REVIEW
Nikolaos Papanas, Dan Ziegler
Distal symmetric sensorimotor polyneuropathy (DSPN) is the most common neurological manifestation in diabetes. Major risk factors of DSPN include diabetes duration, hyperglycemia, and age, followed by prediabetes, hypertension, dyslipidemia, and obesity. Height, smoking, insulin resistance, hypoinsulinemia, and others represent an additional risk. Importantly, hyperglycemia, hypertension, dyslipidemia, obesity, and smoking are modifiable. Stringent glycemic control has been shown to be effective in type 1, but not to the same extent in type 2 diabetes...
April 2015: Review of Diabetic Studies: RDS
https://www.readbyqxmd.com/read/26297615/beneficial-effects-of-fenofibric-acid-on-overexpression-of-extracellular-matrix-components-cox-2-and-impairment-of-endothelial-permeability-associated-with-diabetic-retinopathy
#14
Sumon Roy, Dongjoon Kim, Cristina Hernández, Rafael Simó, Sayon Roy
In the Fenofibric Acid (FA) Intervention and Event Lowering in Diabetes (FIELD) study, FA, a lipid-lowering drug, has been shown to significantly reduce macular edema in diabetic patients. In the present study, we investigated whether FA reduces vascular permeability by inhibiting cyclooxygenase-2 (COX-2), a critical mediator of inflammation, and reducing overexpression of fibronectin (FN) and collagen IV (Coll IV), two basement membrane (BM) components upregulated in diabetic retinopathy. Rat retinal endothelial cells (RRECs) were grown in normal (N:5 mM glucose) or high glucose (HG:30 mM glucose) medium with or without FA for 7 days...
November 2015: Experimental Eye Research
https://www.readbyqxmd.com/read/26238659/feno%C3%AF-brate-suppresses-cellular-metabolic-memory-of-high-glucose-in-diabetic-retinopathy-via-a-sirtuin-1-dependent-signalling-pathway
#15
Shuzhi Zhao, Jun Li, Na Wang, Bingqing Zheng, Tao Li, Qing Gu, Xun Xu, Zhi Zheng
Inflammation is a major contributing factor in the development of diabetic microvascular complications, regardless of whether improved glycaemic control is achieved. Studies have increasingly indicated that fenofibrate, a lipid‑lowering therapeutic agent in clinical use, exerts a potential anti‑inflammatory effect, which is mediated by sirtuin 1 (SIRT1; an NAD+‑dependent deacetylase) in endothelial cells. The aim of the present study was to investigate the inhibitory effect of fenofibrate on metabolic memory (via the regulation of SIRT1), and inflammatory responses in cell and animal models of diabetic retinopathy (DR)...
October 2015: Molecular Medicine Reports
https://www.readbyqxmd.com/read/26209985/the-use-of-fenofibrate-in-the-management-of-patients-with-diabetic-retinopathy-an-evidence-based-review
#16
REVIEW
Neil Sharma, Ju-Lee Ooi, Jong Ong, Douglas Newman
BACKGROUND: Diabetic retinopathy is a significant cause of vision impairment, especially affecting those of working age. There are two large, randomised controlled trials examining the effect of fenofibrate on diabetic retinopathy. OBJECTIVE: We summarise their findings, and report on the available safety data. DISCUSSION: The FIELD study reported that patients treated with fenofibrate had a statistically significant relative risk reduction in the need for laser treatment for maculopathy and proliferative retinopathy...
June 2015: Australian Family Physician
https://www.readbyqxmd.com/read/26055067/relationship-of-fibroblast-growth-factor-21-with-baseline-and-new-on-study-microvascular-disease-in-the-fenofibrate-intervention-and-event-lowering-in-diabetes-study
#17
RANDOMIZED CONTROLLED TRIAL
Kwok-Leung Ong, Andrzej S Januszewski, Rachel O'Connell, Luke Buizen, Alicia J Jenkins, Aimin Xu, David R Sullivan, Philip J Barter, Russell S Scott, Marja-Riitta Taskinen, Kerry-Anne Rye, Anthony C Keech
AIMS/HYPOTHESIS: Baseline circulating fibroblast growth factor 21 (FGF21) levels can predict total cardiovascular disease events in the Fenofibrate Intervention and Event Lowering in Diabetes (FIELD) study. This paper describes the relationship of baseline FGF21 levels and new on-study microvascular disease in patients with type 2 diabetes from the FIELD study. METHODS: Baseline FGF21 levels were measured in plasma by enzyme-linked immunosorbent assay in 9697 study participants...
September 2015: Diabetologia
https://www.readbyqxmd.com/read/25989912/non-traditional-systemic-treatments-for-diabetic-retinopathy-an-evidence-based-review
#18
REVIEW
Rafael Simó, Stefania Ballarini, José Cunha-Vaz, Linong Ji, Hermann Haller, Paul Zimmet, Tien Y Wong
The rapid escalation in the global prevalence diabetes, with more than 30% being afflicted with diabetic retinopathy (DR), means it is likely that associated vision-threatening conditions will also rise substantially. This means that new therapeutic approaches need to be found that go beyond the current standards of diabetic care, and which are effective in the early stages of the disease. In recent decades several new pharmacological agents have been investigated for their effectiveness in preventing the appearance and progression of DR or in reversing DR; some with limited success while others appear promising...
2015: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/25949071/diabetic-retinopathy-and-systemic-factors
#19
REVIEW
Robert N Frank
Diabetic retinopathy, an oculardisease, is governed by systemic as well as local ocular factors. These include primarily chronic levels of blood glucose. Individuals with chronically elevated blood glucose levels have substantially more, and more severe, retinopathy than those with lower blood glucose levels. The relationship of blood glucose to retinopathy is continuous, with no threshold although individuals with hemoglobin A1c levels (a measure of chronic glycemia) <6.5%, generally develop little or no retinopathy...
April 2015: Middle East African Journal of Ophthalmology
https://www.readbyqxmd.com/read/25772642/is-fenofibrate-a-reasonable-treatment-for-diabetic-microvascular-disease
#20
REVIEW
Rafael Simó, Olga Simó-Servat, Cristina Hernández
Type 2 diabetes is a pandemic disease, and its prevalence is increasing mainly due to an increase in obesity and life expectancy. Diabetic complications and their comorbidities constitute the most important economic cost of the disease and represent a significant economic burden for the healthcare systems of developed countries. Despite improving standards of care, people with diabetes remain at risk of the development and progression of microvascular diabetic complications. Therefore, the identification of novel therapeutic approaches is necessary...
May 2015: Current Diabetes Reports
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