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Wang Shiying, Sun Boyun, Yuan Jianye, Zhang Wanjun, Tao Ping, Lin Jiang, Hu Hongyi
The effects of VEGFA isoforms on the vascular permeability and structure are still unclear. In this study, we found that VEGFA121 and VEGFA165, 2 isoforms of VEGFA, exerted the opposing effects of antiangiogenesis and proangiogenesis on regulating vascular endothelia cells proliferation and tube formation. The 2 isoforms affected the protein expression of Ras-related protein 1-GTPase-activating protein 1 (Rap1GAP) and thrombospondin 1, 2 important signal molecules of Rap1GAP/thrombospondin 1 signal pathway in primary human umbilical vein endothelial cells by regulating 2 different phosphorylating sites of VEGFR2, Tyr(1175) and Tyr(1214)...
April 2017: Inflammatory Bowel Diseases
Yusuke Hirayama, Ryosuke Nakanishi, Noriaki Maeshige, Hidemi Fujino
Physical inactivity leads to muscle atrophy and capillary regression in the skeletal muscle. Intermittent loading during hindlimb unloading attenuates the muscle atrophy, meanwhile the capillary regression in the skeletal muscle is not suppressed. Nucleoprotein has antioxidant capacity and may prevent capillary regression. Therefore, we assessed the combined effects of intermittent loading with nucleoprotein supplementation on capillary regression induced by hindlimb unloading. Five groups of rats were assigned: control (CON), 7 days hindlimb unloading (HU), HU plus nucleoprotein supplementation (HU + NP), intermittent loading during HU (HU + IL), and intermittent loading combined with nucleoprotein supplementation during HU (HU + IL + NP)...
February 2017: Physiological Reports
Shih-Ya Tseng, Ting-Hsing Chao, Yi-Heng Li, Chung-Lung Cho
This study investigated the effect of cilostazol on proangiogenesis functions in human early endothelial progenitor cells (EPCs) in vitro and the therapeutic implication of hybrid therapy with cilostazol and human early EPCs in vivo. Cilostazol significantly increased colony-forming units and enhanced differentiation of EPCs toward endothelial lineage. Treatments resulted in antiapoptotic effects and stimulated proliferation and migration and in vitro vascular tube formation through activation of stromal cell-derived factor-1 (SDF-1)/C-X-C chemokine receptor type 4 (CXCR4)/phosphatidylinositol-3 kinase (PI3K)/Akt signaling pathway...
2016: BioMed Research International
Hua Liu, Zhongkun Liu, Yong Liu, Shifeng Kan, Jian Yang, Hongyi Liu
OBJECTIVE Chronic subdural hematoma (CSDH) is prevalent in the aged population and is commonly treated with bur hole drainage. This treatment, however, can lead to various surgical complications. Atorvastatin may cure CSDH via its antiinflammatory and proangiogenesis effects, but not all patients treated with this medication can avoid surgery. The authors' aim was to investigate the effect of atorvastatin and identify characteristics of patients with CSDH sensitive to atorvastatin therapy. METHODS A prospective, placebo-controlled observational study was conducted in 80 patients with evidence of CSDH...
July 29, 2016: Journal of Neurosurgery
Leila Chodari, Mustafa Mohammadi, Vajiheh Ghorbanzadeh, Hassan Dariushnejad, Gisou Mohaddes
OBJECTIVES: Impaired angiogenesis in cardiac tissue is a major complication of diabetes. This study was aimed to evaluate the effects of testosterone and voluntary exercise on vascular endothelial growth factor-A (VEGF-A), stromal cell-derived factor 1a (SDF-1a) and myocardial capillary density in heart of rats with diabetes. METHODS: Type 1 diabetes was induced by intraperitoneal injection of 55 mg/kg of streptozotocin in 80 male Wistar rats. After 42 days of treatment with testosterone (2 mg/kg/day) or voluntary exercise alone or in combination, angiogenesis was determined in the hearts by immunostaining for PECAM-1/CD31...
October 2016: Canadian Journal of Diabetes
Haishan Zhao, Olivia J Osborne, Sijie Lin, Zhaoxia Ji, Robert Damoiseux, Yuqiang Wang, André E Nel, Shuo Lin
Recent studies suggest that the nanorods consisting of europium hydroxide could promote angiogenesis. In this study, it is sought to determine if additional types of nanoparticles are capable of enhancing angiogenesis and in addition, understand the underlying mechanisms. For this reason, a method is employed that combines a high throughput in vitro cell based screen coupled with an in vivo validation using vascular specific green fluorescent protein reporter transgenic zebrafish for examining proangiogenesis activity...
August 2016: Small
Xiaoping Zhang, Weishuai Lian, Wensheng Lou, Shilong Han, Chenhui Lu, Keqiang Zuo, Haobo Su, Jichong Xu, Chuanwu Cao, Tao Tang, Zhongzhi Jia, Tao Jin, Georges Uzan, Jianping Gu, Maoquan Li
Microvascular lesion in diabetic peripheral arterial disease (PAD) still cannot be resolved by current surgical and interventional technique. Endothelial cells have the therapeutic potential to cure microvascular lesion. To evaluate the efficacy and immune-regulatory impact of intra-arterial infusion of autologous CD133(+) cells, we recruited 53 patients with diabetic PAD (27 of CD133(+) group and 26 of control group). CD133(+) cells enriched from patients' PB-MNCs were reinfused intra-arterially. The ulcer healing followed up till 18 months was 100% (3/3) in CD133(+) group and 60% (3/5) in control group...
2016: Stem Cells International
Jinyan Li, Dong Zhai, Fang Lv, Qingqing Yu, Hongshi Ma, Jinbo Yin, Zhengfang Yi, Mingyao Liu, Jiang Chang, Chengtie Wu
UNLABELLED: Effectively stimulating angiogenesis and avoiding wound infection are great challenges in wound care management. Designing new healing dressings with requisite angiogenic capacity and antibacterial performance is of particular significance. In order to achieve this aim, we prepared a copper (Cu)-containing bioactive glass nanocoating (40-50nm) with uniform nanostructure on natural eggshell membrane (Cu-BG/ESM) by the pulsed laser deposition (PLD) technique. The surface physicochemical properties including hydrophilicity and hardness of ESM were significantly improved after depositing Cu-BG nanocoatings...
May 2016: Acta Biomaterialia
Ting Kang, Tia M Jones, Clayton Naddell, Methode Bacanamwo, John W Calvert, Winston E Thompson, Vincent C Bond, Y Eugene Chen, Dong Liu
UNLABELLED: Cell secretion is an important mechanism for stem cell-based therapeutic angiogenesis, along with cell differentiation to vascular endothelial cells or smooth muscle cells. Cell-released microvesicles (MVs) have been recently implicated to play an essential role in intercellular communication. The purpose of this study was to explore the potential effects of stem cell-released MVs in proangiogenic therapy. We observed for the first time that MVs were released from adipose-derived stem cells (ASCs) and were able to increase the migration and tube formation of human umbilical vein endothelial cells (HUVECs)...
April 2016: Stem Cells Translational Medicine
Shang Li, Yuanye Dang, Xuelin Zhou, Bin Huang, Xiaohui Huang, Zherui Zhang, Yiu Wa Kwan, Shun Wan Chan, George Pak Heng Leung, Simon Ming Yuen Lee, Maggie Pui Man Hoi
Formononetin is an isoflavone that has been shown to display estrogenic properties and induce angiogenesis activities. However, the interrelationship between the estrogenic properties and angiogenesis activities of formononetin are not well defined. In the present study, docking and enzymatic assay demonstrated that formononetin displayed direct binding to the ligand-binding domain (LBD) of estrogen receptor alpha (ERα) with an agonistic property. Results from Human Umbilical Vein Endothelial Cells (HUVEC) by using real-time migration xCELLigence system, immunofluorescence and western blotting provided strong evidences of formononetin induced endothelial cell migration and dramatic actin cytoskeleton spatial modification through ERα-enhanced-ROCK-II/MMP2/9 signaling pathways...
November 16, 2015: Scientific Reports
Feng Wu, Zhiqing He, Ru Ding, Zhigang Huang, Qixia Jiang, Haiming Cui, Yi Lin, Shuaibo Huang, Xianliang Dai, Jiayou Zhang, Zonggui Wu, Chun Liang
The aim of this paper is to investigate effect and mechanism of Danhong injection (DH) on angiogenesis in the diabetic hind limb ischemia mouse model. Thirty diabetic hind limb ischemic model mice and ten normal mice, established by intraperitoneal (i.p.) injection of streptozotocin (STZ) or PBS and ligation/excision of femoral artery, and then twenty diabetic hind limb ischemic model mice of all were evenly randomized to saline (control, n = 10) and DH i.p. injection (2 mL/kg weight for 7 days, n = 10) groups...
2015: Evidence-based Complementary and Alternative Medicine: ECAM
Chen Chen, Dao Wen Wang
Arachidonic acids are converted to eicosanoid mediators by different enzyme systems: cyclooxygenase, lipoxygenase, and cytochrome P450 (CYP) monooxygenase pathways (ω/ω-1-hydroxylases and epoxygenases). Of 57 putatively functional human CYPs, only about a dozen enzymes are responsible for xenobiotic metabolism. CYP2 family is the predominant epoxygenase isoform abundantly expressed in the endothelium, myocardium, and kidney in humans. Numerous studies have demonstrated the cardiovascular protective effects of CYP epoxygenases and eicosatrienoic acids ranging from vasodilation, antihypertensive, proangiogenesis, antiatherosclerosis, and cardiac protection...
2015: Advances in Pharmacology
Ya-Dan Wen, Yi-Zhun Zhu
S-propargyl-cysteine (SPRC), also named as ZYZ-802, is a structural analog of S-allylcysteine (SAC), the most abundant constituent of aged garlic extract. SPRC becomes a derivative of the amino acid cysteine, which contains sulfur atom, by changing allyl group in SAC to propargyl group in SPRC. Another analog of SPRC and SAC is S-propyl cysteine (SPC), which has propyl group instead in its cysteine structure. Drug formulation of SPRC has been investigated in the mixture of extenders, such as lactose, microcrystalline cellulose, and cross-linked povidone, showing good fluidity and scale-up production possibility...
2015: Handbook of Experimental Pharmacology
Lin Lin, Wen Sun, Lishuang Wang
OBJECTIVE: To explore the effects of bone marrow-derived mesenchymal stem cell (MSC) on angiogenesis of cervical cancer cell. METHODS: MSCs from umbilical cord were mixed with cervical cancer cell line HeLa cells and subcutaneously plated in armpit area of nude mice to examine the in vivo tumor growth. Micro-vessel density (MVD) in tumor tissue was examined by CD34 immunohistochemical staining. Enzyme-linked immunosorbent assay (ELISA) and real-time polymerase chain reaction (PCR) were employed to detect the expression of proangiogenesis factors...
April 21, 2015: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Shufang Zhang, Chuli Pan, Feifei Zhou, Zhi Yuan, Huiying Wang, Wei Cui, Gensheng Zhang
Hydrogen sulfide (H2S), produced endogenously by the activation of two major H2S-generating enzymes (cystathionine β-synthase and cystathionine γ-lyase), plays important regulatory roles in different physiologic and pathologic conditions. The abnormal metabolism of H2S is associated with fibrosis pathogenesis, causing damage in structure and function of different organs. A number of in vivo and in vitro studies have shown that both endogenous H2S level and the expressions of H2S-generating enzymes in plasma and tissues are significantly downregulated during fibrosis...
2015: Oxidative Medicine and Cellular Longevity
Masabumi Shibuya
The vascular endothelial growth factor (VEGF)-VEGF receptor (R) system is deeply involved in angiogenesis and lymphangiogenesis. VEGFR1/ Fms-like tyrosine kinase-1 (Flt-1) and VEGFR2 are significantly expressed in vascular endothelial cells, where they transfer proangiogenic signals. Particularly, VEGFR2 has strong tyrosine kinase activity; thus, the major and direct angiogenic signals are generated from VEGFR2. VEGFR3 is specifically expressed in lymphatic endothelial cells, generating the main signal for lymphangiogenesis...
2015: Endocrine, Metabolic & Immune Disorders Drug Targets
Yuan-Hung Liu, Kai-Yen Peng, Yu-Wei Chiu, Yi-Lwun Ho, Yao-Horng Wang, Chia-Tung Shun, Shih-Yun Huang, Yi-Shuan Lin, Antoine A F de Vries, Daniël A Pijnappels, Nan-Ting Lee, B Linju Yen, Men-Luh Yen
Cardiovascular disease is the leading cause of death globally, and stem cell therapy remains one of the most promising strategies for regeneration or repair of the damaged heart. We report that human placenta-derived multipotent cells (hPDMCs) can modulate cardiac injury in small and large animal models of myocardial ischemia (MI) and elucidate the mechanisms involved. We found that hPDMCs can undergo in vitro cardiomyogenic differentiation when cocultured with mouse neonatal cardiomyocytes. Moreover, hPDMCs exert strong proangiogenic responses in vitro toward human endothelial cells mediated by secretion of hepatocyte growth factor, growth-regulated oncogene-α, and interleukin-8...
2015: Cell Transplantation
Ying Chen, Murui Zhong, Liang Liang, Fengjuan Gu, Hui Peng
PURPOSE: The proinflammatory cytokine interleukin-17 (IL-17) has recently been shown to promote angiogenesis. In addition, a receptor for IL-17, IL-17 receptor C (IL-17RC), is enriched in patients with wet, age-related macular degeneration (AMD), a disease characterized by the formation of choroidal neovascularization. However, the role of IL-17 in choroidal endothelial cells (CECs) angiogenesis has not been defined. This study was conducted to determine the effect of IL-17 on proliferation, migration, and tube formation of human CECs...
October 2014: Investigative Ophthalmology & Visual Science
Jacqueline Chor Wing Tam, Chun Hay Ko, Cheng Zhang, Hua Wang, Ching Po Lau, Wai Yee Chan, Ping Chung Leung, Kwok Pui Fung, Jin Fang Zhang, Clara Bik San Lau
Endothelial cells are crucially involved in wound healing angiogenesis, restoring blood flow to wound tissues. Our previous study demonstrated that the Chinese 2-herb formula (NF3) possesses significant wound healing effect in diabetic foot ulcer rats with promising in vitro proangiogenic effects on human umbilical vein endothelial cells (HUVEC). Here, we present the comparative global proteome analysis of NF3-treated HUVEC in static or scratch conditions, screening the comprehensive molecular targets in governing the proangiogenic response in wound healing...
September 2014: Proteomics
Ehud Zigmond, Shany Samia-Grinberg, Metsada Pasmanik-Chor, Eli Brazowski, Oren Shibolet, Zamir Halpern, Chen Varol
The liver has a remarkable capacity to regenerate after injury; yet, the role of macrophages (MF) in this process remains controversial mainly due to difficulties in distinguishing between different MF subsets. In this study, we used a murine model of acute liver injury induced by overdose of N-acetyl-p-aminophenol (APAP) and defined three distinct MF subsets that populate the liver following injury. Accordingly, resident Kupffer cells (KC) were significantly reduced upon APAP challenge and started recovering by self-renewal at resolution phase without contribution of circulating Ly6C(hi) monocytes...
July 1, 2014: Journal of Immunology: Official Journal of the American Association of Immunologists
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