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https://www.readbyqxmd.com/read/29031226/ectopic-vascularized-bone-formation-by-human-mesenchymal-stem-cell-microtissues-in-a-biocomposite-scaffold
#1
Rajan Narayan, Tarun Agarwal, Debasish Mishra, Somnath Maji, Sujata Mohanty, Asok Mukhopadhyay, Tapas Kumar Maiti
Three-dimensional multicellular human bone marrow mesenchymal stem cells (hBM-MSCs) are showing a great promise in the repair of bone tissue due to its osteogenic differentiation potential, mimicking in vivo microenvironment and immunomodulatory property. In the present study, the potential of hBM-MSC microtissues (MTs) in combination with a biocomposite material to form vascularized bone-like tissue at an ectopic site in an immunocompromised mouse was evaluated. The scaffold was fabricated using gelatin, carboxymethyl cellulose, polyvinyl alcohol and nano-hydroxyapatite (GCnHP) by the freeze-drying method...
October 5, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29028836/affected-pathways-and-transcriptional-regulators-in-gene-expression-response-to-an-ultra-marathon-trail-global-and-independent-activity-approaches
#2
Maria Maqueda, Emma Roca, Daniel Brotons, Jose Manuel Soria, Alexandre Perera
Gene expression (GE) analyses on blood samples from marathon and half-marathon runners have reported significant impacts on the immune and inflammatory systems. An ultra-marathon trail (UMT) represents a greater effort due to its more testing conditions. For the first time, we report the genome-wide GE profiling in a group of 16 runners participating in an 82 km UMT competition. We quantified their differential GE profile before and after the race using HuGene2.0st microarrays (Affymetrix Inc., California, US)...
2017: PloS One
https://www.readbyqxmd.com/read/29028584/diagnosis-and-treatment-options-for-sequelae-following-radiation-treatment-of-brain-tumors
#3
REVIEW
Swapnil Mehta, Aatman Shah, Henry Jung
Radiation serves an important role in the treatment of metastatic and primary brain tumors. Radiation carries a risk of post radiation treatment effects, such as pseudoprogression and radiation necrosis. The ability to differentiate between radiation necrosis, pseudoprogression, and tumor recurrence remains a diagnostic conundrum with varying treatment options. In this review, we will discuss the pathophysiology, diagnostic imaging modalities, and treatments of these post-radiation treatment effects. We focus on the latest developments in magnetic resonance imaging (MRI) modalities including imaging biomarkers and the newest therapeutics such as VEGF inhibitors, Hyperbaric Oxygen Therapy, sensitized cytotoxic T cells, and Laser Interstitial Thermal Therapy (LITT)...
October 7, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29028108/effect-of-vegf-on-neuronal-degeneration-and-interaction-between-alzheimer-s-disease-biomarkers
#4
H-C Yuan, C-W Jiang, L-Y Hou, Y-B Lv, X-Z Feng, L-F Guo, G Sun, K Liu, Y-J Liu, B Xu, C-Y Wang
The article "Effect of VEGF on neuronal degeneration and interaction between Alzheimer's disease biomarkers" by H.-C. Yuan, C.-W. Jiang, L.-Y. Hou, Y.-B. Lv, X.-Z. Feng, L.-F. Guo, G. Sun, K. Liu, Y.-J. Liu, B. Xu, C.-Y. Wang, published in Eur Rev Med Pharmacol Sci 2017; 21 (16): 3649-3657 has been withdrawn.
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29027451/-enhancing-the-ability-of-autophagy-and-proliferation-of-bone-marrow-mesenchymal-stem-cells-by-interleukin-8-through-akt-stat3-pathway-in-hypoxic-environment
#5
Lei Shen, Shanqiang Zhang, Xiaodong Zhang, Yuting Zhang, Liping Xie, Yang Jiang, Yong Ma, Guofeng Li
To study the effects and mechanisms of interleukin-8 (IL-8) on the proliferation and autophagy of human bone marrow mesenchymal stem cells (hBMSC) under hypoxic condition. In the hypoxia model, we set the non-stimulated hBMSC as the hypoxia control group; the hBMSC stimulated by 100 μmol/L human IL-8 as the IL-8 group; the hBMSC stimulated by 50 μmol/L MK2206 (Akt protein inhibitor) and 100μmol/L IL-8 as the Akt inhibitor group; and the normal cultured hBMSC as the normal control group. The experiments of EdU cell proliferation and TUNEL apoptosis were respectively used to detect the number of positive cells that were labeled by EdU and apoptosis in each group, and Western blotting and ELISA were used respectively to detect the expression of autophagy protein (LC-3), Akt/STAT3 and other proteins in each group...
October 25, 2016: Sheng Wu Gong Cheng Xue Bao, Chinese Journal of Biotechnology
https://www.readbyqxmd.com/read/29027430/-virtual-screening-of-anti-angiogenesis-flavonoids-from-sophora-flavescens
#6
Xi-Xin Chen, Yi Liu, Rong Huang, Lin-Lin Zhao, Lei Chen, Shu-Mei Wang
Angiogenesis is a dynamic, multi-step process. It is known that about 70 diseases are related to angiogenesis. Both the experimental and the literature reports showed that Sophora flavescens inhibit angiogenesis significantly, but the material basis and the mechanism of action have not been clear. In this study, molecular docking was used for screening of anti-angiogenesis flavonoids from the roots of S. flavescens. One handred and twenty-six flavonoids selected from S. flavescens were screened in the docking ligand database with six targets(VEGF-a,TEK,KDR,Flt1,FGFR1 and FGFR2) as the receptors...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29027018/accelerated-growth-of-hemangioblastoma-in-pregnancy-the-role-of-proangiogenic-factors-and-upregulation-of-hypoxia-inducible-factor-hif-in-a-non-oxygen-dependent-pathway
#7
REVIEW
Yosef Laviv, Joshua L Wang, Matthew P Anderson, Ekkehard M Kasper
Hemangioblastomas (HBs) are benign, highly vascular tumors, often characterized by loss of function of the von Hippel-Lindau (vHL) gene. They are the most common central nervous system tumor observed in vHL syndrome. Loss of function of the vHL gene creates a "pseudo-hypoxic" state, causing overactivation of hypoxia-inducible factor (HIF) and vascular endothelial growth factor (VEGF)-related pathways. In some cases, HBs can rapidly increase in size during pregnancy to then present acutely, which most frequently occurs after the 20th gestational week...
October 13, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/29026849/increased-levels-of-vegf-a-and-hif-1%C3%AE-in-turkish-children-with-crimean-congo-hemorrhagic-fever
#8
Murat Sefikogullari, Ali Kaya, Huseyin Aydin, Enver Sancakdar, Veysel Kenan Celik, Gokhan Bagci
BACKGROUND: Crimean-Congo Hemorrhagic Fever (CCHF) is a disease characterized by serious course, including acute viral fever, ecchymosis, thrombocytopenia, liver dysfunction and high rate of mortality. Hypoxia Inducible Factor-1α (HIF-1α) and Vascular Endothelial Growth Factor-A (VEGF-A) play an important role both in the inflammatory process and plasma leakage. The aim of this study was to define HIF-1α and VEGF-A serum levels obtained from CCHF patients and control group and to investigate whether these factors were correlated with the pathogenesis of this disease...
March 2017: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/29026308/role-of-poly-%C3%AE%C2%B5-caprolactone-lipid-core-nanocapsules-on-melanoma-neutrophil-crosstalk
#9
Carine C Drewes, Aline de Cs Alves, Cristina B Hebeda, Isabela Copetti, Silvana Sandri, Mayara K Uchiyama, Koiti Araki, Silvia S Guterres, Adriana R Pohlmann, Sandra H Farsky
Metastatic melanoma is an aggressive cancer with increasing incidence and limited therapies in advanced stages. Systemic neutrophilia or abundant neutrophils in the tumor contribute toward its worst prognosis, and the interplay of cancer and the immune system has been shown in tumor development and metastasis. We recently showed the in vivo efficacy of poly(ε-caprolactone) lipid-core nanocapsule (LNC) or LNC loaded with acetyleugenol (AcE-LNC) to treat B16F10-induced melanoma in mice. In this study, we investigated whether LNC or AcE-LNC toxicity could involve modifications on crosstalk of melanoma cells and neutrophils...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29026284/anti-vascular-endothelial-growth-factor-therapy-for-the-treatment-of-myopic-choroidal-neovascularization
#10
REVIEW
Colin S Tan, SriniVas R Sadda
Myopic choroidal neovascularization (CNV) is a sight-threatening condition which occurs in eyes with myopia, particularly in those with pathologic myopia. It is the most common cause of CNV among patients younger than 50 years. Hemorrhage and exudation from the CNV lesion may eventually result in scarring or chorioretinal atrophy. While myopic CNV was previously treated with focal laser photocoagulation or photodynamic therapy (PDT), the current treatment of choice is anti-vascular endothelial growth factor (VEGF) agents...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29026158/ginsenoside-rb1-prevents-homocysteine-induced-epc-dysfunction-via-vegf-p38mapk-and-sdf-1-cxcr4-activation
#11
Tao-Hua Lan, Dan-Ping Xu, Man-Ting Huang, Ju-Xian Song, Huan-Lin Wu, Min Li
Hyperhomocystinemia (HHcy) is known as an independent risk factor for cardiovascular disease. Our previous study showed that ginsenoside Rb1, the major active constituent of ginseng, prevents homocysteine (Hcy)-induced endothelial damage. However, the role of ginsenoside Rb1 in Hcy-induced dysfunction in endothelial progenitor cells (EPCs) remains unknown. In the study, we found that ginsenoside Rb1 reversed the Hcy-induced impairment of adhesive and migratory ability in EPCs which were significantly abolished by CXCR4 antagonist AMD3100 and VEGFR2 inhibitor SU5416...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29026147/vascular-endothelial-growth-factor-in-cartilage-development-and-osteoarthritis
#12
Masashi Nagao, John L Hamilton, Ranjan Kc, Agnes D Berendsen, Xuchen Duan, Chan Wook Cheong, Xin Li, Hee-Jeong Im, Bjorn R Olsen
Genome wide studies indicate that vascular endothelial growth factor A (VEGF) is associated with osteoarthritis (OA), and increased VEGF expression correlates with increased disease severity. VEGF is also a chondrocyte survival factor during development and essential for bone formation, skeletal growth and postnatal homeostasis. This raises questions of how the important embryonic and postnatal functions of VEGF can be reconciled with an apparently destructive role in OA. Addressing these questions, we find that VEGF acts as a survival factor in growth plate chondrocytes during development but only up until a few weeks after birth in mice...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29025978/the-anti-vascular-endothelial-growth-factor-receptor-1-monoclonal-antibody-d16f7-inhibits-glioma-growth-and-angiogenesis-in-vivo
#13
Maria Grazia Atzori, Lucio Tentori, Federica Ruffini, Claudia Ceci, Elena Bonanno, Manuel Scimeca, Pedro Miguel Lacal, Grazia Graziani
The vascular endothelial growth factor receptor-1 (VEGFR-1) is a tyrosine kinase receptor that does not play a relevant role in physiological angiogenesis in adults, while it is important in tumor angiogenesis. In high-grade glioma VEGFR-1 expression by tumor endothelium and neoplastic cells contributes to the aggressive phenotype. We recently generated an anti-VEGFR-1 monoclonal antibody (mAb) characterized by a novel mechanism of action, since it hampers receptor activation without interfering with ligand binding...
October 12, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29025656/dual-delivery-of-vegf-and-ngf-by-emulsion-electrospun-nanofibrous-scaffold-for-peripheral-nerve-regeneration
#14
Bin Xia, Yonggang Lv
Controlled delivery of multiple therapeutic agents can be considered an effective approach in nerve injury due to its multifunction. In this study, recombinant human vascular endothelial growth factor (VEGF) and recombinant human nerve growth factor (NGF) were loaded on the surface and in the core of emulsion electrospun poly (l-lactic acid) (PLLA) nanofibrous scaffold, respectively. The in vitro studies showed that VEGF and NGF had a sequential release pattern in which most of the VEFG was released in the first few days but the NGF could be continuously released for >1month...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29025639/effects-of-copper-nanoparticles-in-porous-tio2-coatings-on-bacterial-resistance-and-cytocompatibility-of-osteoblasts-and-endothelial-cells
#15
Xiangyu Zhang, Jianfang Li, Xin Wang, Yueyue Wang, Ruiqiang Hang, Xiaobo Huang, Bin Tang, Paul K Chu
Copper (Cu) has garnered increasing interest due to its excellent antimicrobial activity and important roles in human metabolism. Although the biological effects of Cu have been studied, the effects of Cu nanoparticles (NPs) on cell behavior are not well understood. In this study, porous TiO2 coatings doped with different amounts of Cu NPs (designated as 0 Cu, 0.3 Cu, and 3.0 Cu) are deposited on titanium by micro-arc oxidation (MAO). The Cu NPs coated samples exhibit excellent antibacterial activity against Staphylococcus aureus (S...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29025597/upregulation-of-vascular-endothelial-growth-factor-vegf-its-role-in-progression-and-prognosis-of-non-small-cell-lung-carcinoma
#16
Niyaz A Naikoo, Roohi Rasool, Sonaullah Shah, A G Ahangar, Mushtaq A Siddiqi, Zafar A Shah
Elevated VEGF mRNA (-ΔCT) was significantly associated with adenocarcinoma histology (vs squamous) and advanced NSCLC clinical stages in a univariable analysis; however, this association did not remain significant in the multivariable analysis. Of interest, a Kaplan-Meier analysis showed that NSCLC patients with higher VEGF mRNA (-ΔCT ≥10) had a significantly poorer overall survival and shorter postoperative relapse time in adenocarcinoma and in stage III/IV than those with VEGF mRNA of -ΔCT <10 (P < 0...
October 2017: Cancer Genetics
https://www.readbyqxmd.com/read/29025216/assisted-salvage-of-ischemic-fasciocutaneous-flap-using-adipose-derived-mesenchymal-stem-cells-in-situ-revascularization
#17
Michael H Carstens, Mauricio Mendieta, Cecilia Pérez, Esperanza Villareal, Rodolfo Garcia
Adipose-derived mesenchymal stem cells (ASCs) have been shown to produce vascular endothelial growth factor (VEGF) and can increase perfusion in patients with critical limb ischemia. We will show that this concept can be applied to augment blood flow in zones of flap ischemia. We presented a case study of a 26-year-old man with a complex hand injury covered by a reverse radial perforator fasciocutaneous flap, which developed ischemic necrosis and was treated by debridement, transplantation of ASCs to enhance vascular support, and saline dressings...
July 1, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29025174/-change-in-therapy-of-neovascular-age-related-macular-degeneration-diabetic-maculopathy-and-macular-edema-after-retinal-vein-occlusion
#18
Matthias Grüb, Ioannis Lamprakis, Christoph Reichel
Background Therapy of neovascular age-related macular degeneration, diabetic maculopathy and macular edema after retinal vein occlusion has changed fundamentally since the introduction of anti-VEGF therapy more than 10 years ago. With the technological progress in ocular coherence tomography (OCT) functional criteria have been replaced by more morphological criteria. Contract law and administrative problems have been improved but not solved totally. Patients/Materials and Methods In a retrospective study, 207 eyes of 157 patients who presented between January 2007 and October 2013 with neovascular age-related macular degeneration, diabetic maculopathy or macular edema after retinal vein occlusion were analyzed...
October 12, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/29024837/translating-the-role-of-osteogenic-angiogenic-coupling-in-bone-formation-highly-efficient-chitosan-pdna-activated-scaffolds-can-accelerate-bone-regeneration-in-critical-sized-bone-defects
#19
Rosanne M Raftery, Irene Mencía Castaño, Gang Chen, Brenton Cavanagh, Brian Quinn, Caroline M Curtin, Sally Ann Cryan, Fergal J O'Brien
The clinical translation of bioactive scaffolds for the treatment of large segmental bone defects has remained a challenge due to safety and efficacy concerns as well as prohibitive costs. The design of an implantable, biocompatible and resorbable device, which can fill the defect space, allow for cell infiltration, differentiation and neovascularisation, while also recapitulating the natural repair process and inducing cells to lay down new bone tissue, would alleviate the problems with existing treatments...
October 4, 2017: Biomaterials
https://www.readbyqxmd.com/read/29024811/cnot2-promotes-proliferation-and-angiogenesis-via-vegf-signaling-in-mda-mb-231-breast-cancer-cells
#20
Eun Jung Sohn, Deok-Beom Jung, HyoJung Lee, In Han, Jihyun Lee, Hyemin Lee, Sung-Hoon Kim
Here the underlying role of CNOT2, a subunit of CCR4-NOT complex, was elucidated in cancer progression. CNOT2 was overexpressed in HIT-T15, ASPC-1, BXPC-3, PC-3, LNCaP, MCF-7 and MDA-MB-231 cell lines, which was confirmed by Tissue array in various human tumor tissues. Also, CNOT2 depletion suppressed proliferation and colony formation of MDA-MB-231 cells. Of note, microarray revealed decreased expression of CNOT2, VEGF-A, HIF2 alpha (<0.5 fold) and increased expression of UMOD1, LOC727847, MMP4, hCG and other genes (>2...
October 9, 2017: Cancer Letters
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