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https://www.readbyqxmd.com/read/29382038/extended-duration-vascular-endothelial-growth-factor-inhibition-in-the-eye-failures-successes-and-future-possibilities
#1
REVIEW
Michael W Stewart
Vascular endothelial growth factor (VEGF) plays a pivotal role in the development of neovascularization and edema from several common chorioretinal vascular conditions. The intravitreally injected drugs (aflibercept, bevacizumab, conbercept, pegaptanib, and ranibizumab) used to treat these conditions improve the visual acuity and macular morphology in most patients. Monthly or bimonthly injections were administered in the phase III pivotal trials but physicians usually individualize therapy with pro re nata (PRN) or treat and extend regimens...
January 27, 2018: Pharmaceutics
https://www.readbyqxmd.com/read/29360683/short-term-efficacy-of-conbercept-and-ranibizumab-for-polypoidal-choroidal-vasculopathy
#2
Zhen Huang, Qin Ding, Min Yan, Haiyan Lian, Zhongshan Chen, Xiao Chen, Yanping Song
PURPOSE: To compare the 6-month efficacy of the intravitreal injection of conbercept or ranibizumab for patients with polypoidal choroidal vasculopathy (PCV). METHODS: This is a retrospective case-control study involved 79 PCV eyes of 77 patients. The PCV eyes were treated with an intravitreal injection of either ranibizumab (n = 44) or conbercept (n = 35). Three monthly loading doses were injected and followed by retreatment as needed. The best-corrected visual acuity and angiographic characteristics were evaluated after 6 months...
January 19, 2018: Retina
https://www.readbyqxmd.com/read/29343949/clinical-observations-on-the-use-of-new-anti-vegf-drug-conbercept-in-age-related-macular-degeneration-therapy-a-meta-analysis
#3
Chunmei Cui, Hong Lu
Purpose: Conbercept is a new anti-vascular endothelial growth factor (VEGF) drug approved for the treatment of age-related macular degeneration (AMD). Although this novel drug has been widely used in clinic, unlike other anti-VEGF drugs, validation and consensus on its method of clinical application and clinical safety have not yet been achieved. Methods: Relevant literature was searched on PubMed, Web of Science, China National Knowledge Internet, and Wanfang Data...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29319204/observation-of-curative-effect-of-intravitreal-injection-of-conbercept-in-wet-age-related-macular-degeneration-optical-coherence-tomography-analysis-after-injection
#4
Wen Yang, Ying Tan, Chaowei Li, Yi Liu, Guohua Lu
To observe the clinical efficacy of intravitreal injection of conbercept in the treatment of wet age-related macular degeneration (wAMD), optical coherence tomography (OCT) and the best corrected visual acuity (BCVA) was observed to measure the changes of anatomical changes of central macular thickness (CMT) and the area and volume of retinal pigment epithelium (RPE) uplift. Fifteen patients (15 eyes) with wet AMD were enrolled in this study. All patients underwent intravitreal injection of conbercept of 0...
January 10, 2018: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29185839/therapeutic-efficacy-of-conbercept-for-inflammatory-choroidal-neovascularization
#5
Yutong Chen, Rui Hua
No abstract text is available yet for this article.
November 29, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28980574/-anti-vegf-therapy-resistance-in-neovascular-age-related-macular-degeneration
#6
M V Budzinskaya, A A Plyukhova, P A Sorokin
With account to the increase in the elderly population in most of the developed countries, the WHO defines age-related macular degeneration (AMD) as one of the main causes of blindness in the world. A large percentage of disability is accounted for by exudative, or neovascular, form of AMD. Today, a total of 5 anti-VEGF drugs exist that are recommended for treatment of exudative AMD: pegaptanib, ranibizumab, bevacizumab, aflibercept, and conbercept. Despite significant progress in the treatment of neovascular AMD yielded by the introduction into clinical practice of anti-VEGF drugs, some patients report a lack (down to complete lack) of response with standard treatment patterns and even a decrease in treatment efficacy after repeated intravitreal injections...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/28937147/comparison-of-effectiveness-and-safety-between-conbercept-and-ranibizumab-for-treatment-of-neovascular-age-related-macular-degeneration-a-retrospective-case-controlled-non-inferiority-multiple-center-study
#7
J Cui, D Sun, H Lu, R Dai, L Xing, H Dong, L Wang, D Wei, B Jiang, Y Jiao, M M Jablonski, S Charles, W Gu, H Chen
PurposeTo compare the efficacy and safety of conbercept and ranibizumab when administered according to a treat-and-extend (TREX) protocol for the treatment of neovascular age-related macular degeneration (AMD) in China.Patients and methodsBetween May 2014 and May 2015, 180 patients were treated in a 1 : 1 ratio using conbercept or ranibizumab from four hospitals. Patients received either conbercept 0.5 mg or ranibizumab 0.5 mg intravitreal injections. Follow-up time was 1 year and treated based on a TREX approach...
February 2018: Eye
https://www.readbyqxmd.com/read/28841827/comparison-of-12-month-therapeutic-effect-of-conbercept-and-ranibizumab-for-diabetic-macular-edema-a-real-life-clinical-practice-study
#8
Yule Xu, Ao Rong, Wei Xu, Yunli Niu, Zhen Wang
BACKGROUND: To compare the efficacy of intravitreal conbercept and ranibizumab in the treatment of diabetic macular edema (DME) in a real-life clinical practice. METHODS: This was a retrospective study. Among 62 Chinese patients with DME, 32 patients (36 eyes) received intravitreal conbercept (IVC) injections and 30 patients (32 eyes) received intravitreal ranibizumab (IVR) injections, once a month for 3 months followed by as needed therapy. All participants had at least 12 months of follow-up...
August 25, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28730115/diabetic-macular-edema-in-proliferative-stage-treated-with-anti-vascular-endothelial-growth-factor-agent-and-triamcinolone-acetonide-by-laser-based-strategies
#9
Gang Qiao, Wan-Jiang Dong, Yan Dai, Zhen-Hua Jiang, Hai-Ke Guo
AIM: To appraise the effect of treatment for diabetic macular edema (DME) in proliferative stage with sufficient panrentinal photocoagulation (PRP) therapy and intravitreal injections (IV) Conbercept and posterior subtenon's triamcinolone acetonide (STTA) sequential therapy. METHODS: This prospective clinical randomized controlled trial of cross-over design was conducted in three phases. The participants included cases of DME in proliferative stage. They were divided into two groups and treated with PRP before enrollment...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28699927/short-term-outcomes-after-intravitreal-injections-of-conbercept-versus-ranibizumab-for-the-treatment-of-retinopathy-of-prematurity
#10
Enzhong Jin, Hong Yin, Xiaoxin Li, Mingwei Zhao
PURPOSE: Intravitreal injection of conbercept (IVC) is the latest applied treatment that could be used in retinopathy of prematurity (ROP) patients. The structural outcomes and recurrence of ROP among patients treated with IVC or intravitreal injection of ranibizumab (IVR) were compared. METHODS: A consecutive case series of ROP treated with IVC or IVR were retrospectively studied. The primary outcome was treatment success defined as regression of plus disease. The secondary outcomes were recurrence of plus, times of injection, and the final regression of disease...
July 7, 2017: Retina
https://www.readbyqxmd.com/read/28606070/efficacy-and-safety-of-conbercept-as-a-primary-treatment-for-choroidal-neovascularization-secondary-to-punctate-inner-choroidopathy
#11
Yuting Peng, Xiongze Zhang, Lan Mi, Bing Liu, Chengguo Zuo, Miaoling Li, Feng Wen
BACKGROUND: To evaluate the efficacy and safety of intravitreal conbercept (KH902) as the primary treatment of choroidal neovascularization secondary to punctate inner choroidopathy. METHODS: This study was a retrospective, consecutive, observational case series. We reviewed medical records of 16 eyes (16 patients) with naive subfoveal or juxtafoveal choroidal neovascularization secondary to punctuate inner choroidopathy that were treated with intravitreal conbercept injections...
June 12, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28441077/comparison-of-conbercept-with-ranibizumab-for-the-treatment-of-macular-edema-secondary-to-branch-retinal-vein-occlusion
#12
Fengjiao Li, Ming Sun, Jianlian Guo, Aihua Ma, Bojun Zhao
PURPOSE: To confirm the therapeutic efficacy of conbercept for the treatment of macular edema (ME) secondary to branch retinal vein occlusion (BRVO). METHODS: In this prospective, randomized, and comparative study, patients were randomized and divided into conbercept (n = 18) and ranibizumab (n = 17) groups. After an initial intravitreal injection of either conbercept or ranibizumab, a pro re nata (PRN) strategy was adopted based on loss of visual acuity (VA) or increase in central macular thickness (CMT)...
August 2017: Current Eye Research
https://www.readbyqxmd.com/read/28420611/characterization-of-the-conbercept-gene-localization-in-dhfr-amplified-cho-cells-using-fluorescence-in-situ-hybridization
#13
Ming-lei Shi, Wei-li Lai, Tian-hong Yi, Xiao Ke, Zhi-hu Zhao
Chinese-hamster ovary (CHO) cells are most widely used for mammalian protein expression. After integration into the CHO genome, the exogenous gene may be lost in the process of large-scale protein production due to the removal of related selection pressures. Therefore, it is necessary to test its stability in the genome. Conbercept is a fusion protein that specifically binds to the various isoforms of vascular endothelial growth factor (VEGF)-A, VEGF-B, and placental growth factor (PlGF), thereby exerting anti-angiogenic activities...
April 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28377591/a-safety-study-of-high-concentration-and-high-frequency-intravitreal-injection-of-conbercept-in-rabbits
#14
Jiaming Wang, Chunyan Lei, Lifei Tao, Quan Wu, Xiao Ke, Yiguo Qiu, Bo Lei
The novel anti-VEGF drug conbercept has been used in the treatment of several retinal neovascular diseases. Owning to the alteration of the structure, the newest drug is capable of combining more molecular targets and present higher affinity to the angiogenesis promoting factors. However, it is unknown whether it will cause any unwanted effects like other anti-VEGF agents. We studied the short-term safety of high concentration and high frequency intravitreal injection of conbercept in rabbits. Intraocular pressure, fundus-photography, ERGs were applied...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/27958226/correlation-of-vascular-endothelial-growth-factor-production-with-photochemical-reaction-induced-retinal-edema
#15
Liang Shan, Mi Zheng, Yuan Zhang, Yuan Qu, Tian Niu, Qing Gu, Kun Liu, Xin Xia
BACKGROUND: Retinal edema is the major complication of retinal vein occlusion and diabetic retinopathy; it can damage visual function by influencing macular region. This study was to establish a rat retinal edema model and explore the related VEGF expression and observe the responses to anti-VEGF drugs in this model. METHODS: A rat retinal edema model was established by inducing photochemical reaction using a 532 nm laser after the intravenous injection of Erythrosin B...
December 20, 2016: Chinese Medical Journal
https://www.readbyqxmd.com/read/27922068/changes-in-retinal-nerve-fiber-layer-thickness-after-multiple-injections-of-novel-vegf-decoy-receptor-conbercept-for-various-retinal-diseases
#16
Zhihua Zhang, Xiaolu Yang, Huiyi Jin, Yuan Qu, Yuan Zhang, Kun Liu, Xun Xu
Conbercept is a recombinant fusion protein with high affinity for all vascular endothelial growth factor isoforms and placental growth factor. The repeated intravitreal injection of conbercept may cause intraocular pressure (IOP) fluctuations and long-term suppression of neurotrophic cytokines, which could lead to retinal nerve fiber layer (RNFL) damage. This retrospective fellow-eye controlled study included 98 eyes of 49 patients. The changes in IOP and RNFL thickness as well as the correlation between RNFL changes and associated factors were evaluated...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27893623/efficacy-and-safety-of-intravitreal-conbercept-injections-in-macular-edema-secondary-to-retinal-vein-occlusion
#17
Zuhua Sun, Haiying Zhou, Bing Lin, Xuan Jiao, Yingdong Luo, Feng Zhang, Shanshan Tao, Quan Wu, Zunhong Ke, Xiaoling Liu
PURPOSE: To assess the efficacy and safety of intravitreal conbercept injections in patients with macular edema secondary to retinal vein occlusion (RVO). METHODS: A prospective, Phase II clinical trial was performed on 60 patients with macular edema secondary to RVO. Thirty patients had branch RVO (BRVO) and 30 had central RVO (CRVO). Each patient received intravitreal injections of conbercept monthly up to 3 months, followed by monthly evaluation and injection pro re nata to Month 9...
September 2017: Retina
https://www.readbyqxmd.com/read/27877088/aloe-emodin-suppresses-hypoxia-induced-retinal-angiogenesis-via-inhibition-of-hif-1%C3%AE-vegf-pathway
#18
Jianming Wu, Xiao Ke, Wei Wang, Hongcheng Zhang, Na Ma, Wei Fu, Manxi Zhao, Xiaoping Gao, Xiaofeng Hao, Zhirong Zhang
Background: Aloe-emodin (AE) has been reported to possess the antiangiogenic effect on laser induced choroidal neovascularization. AE inhibits the vessel formation in the zebrafish embryos. However, it is still unclear whether AE can alleviate neovascularization. Here, we investigated the inhibitory effect of AE on the hypoxia-induced retinal neovascularization and the possible mechanisms. Methods: We established a vascular endothelial growth factor (VEGF) secretion model under chemical induced hypoxia by exposure of 150 µM CoCl2 to the ARPE-19 cells, then treated the cells with different concentrations of AE (0...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27847621/fusion-proteins-for-treatment-of-retinal-diseases-aflibercept-ziv-aflibercept-and-conbercept
#19
REVIEW
João Rafael de Oliveira Dias, Gabriel Costa de Andrade, Eduardo Amorim Novais, Michel Eid Farah, Eduardo Büchele Rodrigues
In the last few years, monoclonal antibodies have revolutionized the treatment of retinal neovascular diseases. More recently, a different class of drugs, fusion proteins, has provided an alternative treatment strategy with pharmacological differences. In addition to commercially available aflibercept, two other drugs, ziv-aflibercept and conbercept, have been studied in antiangiogenic treatment of ocular diseases. In this scenario, a critical review of the currently available data regarding fusion proteins in ophthalmic diseases may be a timely and important contribution...
2016: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/27779169/comparison-of-the-1-year-outcomes-of-conbercept-therapy-between-two-different-angiographic-subtypes-of-polypoidal-choroidal-vasculopathy
#20
Yong Cheng, Xuan Shi, Jin-Feng Qu, Ming-Wei Zhao, Xiao-Xin Li
BACKGROUND: Polypoidal choroidal vasculopathy (PCV) is characterized by the presence of polyps with or without a branching vascular network and more prevalent among Asians. The aim of this study was to compare the outcomes of conbercept therapy between two different angiographic subtypes of PCV. METHODS: Fifty-eight patients of PCV were classified into two phenotypes according to indocyanine green angiography (ICGA). In Type 1, both feeder and draining vessels are visible on ICGA and network vessels are numerous...
November 5, 2016: Chinese Medical Journal
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