Abstract Vascular complications of diabetes pose a severe threat to human health. Prevention and treatment protocols based on a single vascular complication are no longer suitable for the long-term management of patients with diabetes. Diabetic panvascular disease (DPD) is a clinical syndrome in which vessels of various sizes, including macrovessels and microvessels in the cardiac, cerebral, renal, ophthalmic, and peripheral systems of patients with diabetes, develop atherosclerosis as a common pathology. Pathological manifestations of DPDs usually manifest macrovascular atherosclerosis, as well as microvascular endothelial function impairment, basement membrane thickening, and microthrombosis. Cardiac, cerebral, and peripheral microangiopathy coexist with microangiopathy, while renal and retinal are predominantly microangiopathic. The following associations exist between DPDs: numerous similar molecular mechanisms, and risk-predictive relationships between diseases. Aggressive glycemic control combined with early comprehensive vascular intervention is the key to prevention and treatment. In addition to the widely recommended metformin, glucagon-like peptide-1 agonist, and sodium-glucose cotransporter-2 inhibitors, for the latest molecular mechanisms, aldose reductase inhibitors, peroxisome proliferator-activated receptor-γ agonizts, glucokinases agonizts, mitochondrial energy modulators, etc. are under active development. DPDs are proposed for patients to obtain more systematic clinical care requires a comprehensive diabetes care center focusing on panvascular diseases. This would leverage the advantages of a cross-disciplinary approach to achieve better integration of the pathogenesis and therapeutic evidence. Such a strategy would confer more clinical benefits to patients and promote the comprehensive development of DPD as a discipline. 

/pdf/diabetic-vascular-diseases-molecular-mechanisms-and-1zl82fwd.pdf

Diabetic vascular diseases: molecular mechanisms and therapeutic strategies

Brolucizumab: Evolution through Preclinical and Clinical Studies and the Implications for the Management of Neovascular Age-Related Macular Degeneration.

Purpose of review The purpose of this review is to describe the current clinical landscape of potential future therapies for both nonexudative (dry) and exudative (wet) age-related macular degeneration (AMD). We highlight some of the more promising treatments that are furthest along in development. Recent findings Patients with dry AMD have long been hoping for a highly efficacious treatment that may slow disease progression or even help regain vision. Patients with wet AMD have many effective treatment options but still there are those who have suboptimal responses or are burdened by the high frequency of treatment. We detail exciting new concepts and targets for novel medications. Specifically, for dry AMD we discuss research looking at complement inhibition, neuroprotection, visual cycle modulators, cell-based therapies, and anti-inflammatory agents. For wet AMD we summarize new, potentially more durable anti-vascular endothelial growth factor agents, extended release options, and gene therapy. Summary There are promising new strategies for AMD. Many of the potential new treatments are in or have recently completed phase 2 or phase 3 clinical trials with promising results thus far, including some that have received US Food and Drug Administration approval. Additional therapeutic breakthroughs will likely continue to occur thanks to the number of clinical trials that are nearing the finish line.

Age-related macular degeneration therapy: a review

Introduction: Investigational anti-VEGF treatments for neovascular age-related macular degeneration (nAMD) aim to improve visual outcomes and reduce treatment burden; these include long-acting agents, combination strategies, topical agents, sustained-release, and genetic therapies Areas covered: The authors provide a comprehensive review of investigational therapies for nAMD, focusing on therapies currently in clinical trial Expert opinion: Long-acting anti-VEGF agents have demonstrated promising results in phase 3 studies, and include Brolucizumab, a single-chain antibody fragment, and Abicipar, a designed ankyrin repeat protein (DARPin) Other unique anti-VEGF agents in current trials include Conbercept - a fusion protein of the VEGF receptor domains, KSI-301 - an anti-VEGF antibody biopolymer conjugate, and OPT-302 - an inhibitor of VEGF-C/D Strategies to activate the Tie-2 receptor, some in combination with VEGF inhibition, are of interest, with recent trials of Faricimab, ARP-1536, and nesvacumab Topical anti-VEGF ± anti-PDGF agents, such as pazopanib, squalamine lactate, regorafenib, and LHA510 have shown limited efficacy and/or have not been advanced, although PAN-90806 continues to advance with promising initial results Sustained-release anti-VEGF treatments, to address treatment burden, include the ranibizumab Port Delivery System, GB-102, NT-503, hydrogel depot, Durasert, and ENV1305 Similarly, genetic therapies, including RGX-314 and ADVM-022, aim to provide sustained anti-VEGF expression from the retina

Innovative therapies for neovascular age-related macular degeneration

Age-related macular degeneration is the leading cause of vision loss in the developed world, with the expected number of affected elderly individuals reaching 17.8 million. Antivascular endothelial growth factor (anti-VEGF) injection therapy has been instrumental in treating a disease process that was previously thought to be untreatable. Over the past two decades, landmark studies have demonstrated the efficacy of different anti-VEGF medications and investigated the optimal dosing regimen and delivery mechanism to increase overall vision and minimise patient burden. In this review, we outline landmark neovascular age-related macular degeneration clinical trials that have demonstrated level 1 evidence for its usage or have contributed to the understanding of how to dose these agents.

https://bmjophth.bmj.com/content/bmjophth/4/1/e000398.full.pdf

Current and upcoming anti-VEGF therapies and dosing strategies for the treatment of neovascular AMD: a comparative review

Conbercept for Treatment of Neovascular Age-related Macular Degeneration: Results of the Randomized Phase 3 PHOENIX Study.

Background To demonstrate the efficacy and safety of intravitreal injections of conbercept versus laser photocoagulation in the treatment of diabetic macular oedema (DME). Methods A 12-month multicentre, randomised, double-masked, double-sham, parallel controlled, phase III trial (Sailing Study), followed by a 12-month open-label extension study. Patients with centre-involved DME were randomly assigned to receive either laser photocoagulation followed by pro re nata (PRN) sham intravitreal injections (laser/sham) or sham laser photocoagulation followed by PRN 0.5 mg conbercept intravitreal injections (sham/conbercept). Patients who entered the extension study received PRN conbercept treatment. The primary endpoint was the changes in best-corrected visual acuity (BCVA) from baseline. Results A total of 248 eyes were included in the full analysis set and 157 eyes continued in the extension study. Significant improvement in mean change in BCVA from baseline to month 12 was observed in the sham/conbercept group (8.2±9.5 letters), whereas no improvement was observed in the laser/sham group (0.3±12.0 letters). Patients in the laser/sham group showed a marked improvement in BCVA after the switch to conbercept in the extension study, and there was no difference in BCVA between the two groups at the end of the extension study. Conclusion The use of a conbercept PRN intravitreal injection regimen improved the BCVA of patients with DME, and its efficacy was better than that of laser photocoagulations, and the same efficacy was observed when the eyes treated with laser alone were switched to conbercept. Trial registration number NCT02194634.

https://bjo.bmj.com/content/bjophthalmol/early/2021/05/16/bjophthalmol-2020-318690.full.pdf

Intravitreal conbercept for diabetic macular oedema: 2-year results from a randomised controlled trial and open-label extension study.

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Conbercept for Treatment of Neovascular Age-related Macular Degeneration: Results of the Randomized Phase 3 PHOENIX Study.

Intravitreal conbercept for diabetic macular oedema: 2-year results from a randomised controlled trial and open-label extension study.