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https://www.readbyqxmd.com/read/27911420/-role-of-immunological-factors-in-the-development-of-myopic-choroidal-neovascularization
#1
A G Shchuko, N V Zaitseva, T N Yur'eva, E R Chernykh, I M Mikhalevich, A V Grigor'eva
AIM: To study the concentration of cytokines in the aqueous humor of the anterior chamber in patients with myopic choroidal neovascularization (mCNV) and to compare the results to their ophthalmic status. MATERIAL AND METHODS: A total of 19 patients (19 eyes) with mCNV treated with intravitreal ranibizumab were included in the study. The control group consisted of 15 patients (15 eyes) with myopia who had cataract surgery. Age, sex, and refractive error distribution were similar to that in the study group...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27910154/interferon-free-regimens-improve-portal-hypertension-and-histological-necroinflammation-in-hiv-hcv-patients-with-advanced-liver-disease
#2
P Schwabl, M Mandorfer, S Steiner, B Scheiner, D Chromy, M Herac, T Bucsics, H Hayden, K Grabmeier-Pfistershammer, A Ferlitsch, G Oberhuber, M Trauner, M Peck-Radosavljevic, T Reiberger
BACKGROUND: HIV/HCV co-infected patients show accelerated fibrosis progression and higher risk for complications of portal hypertension (PHT). AIM: To assess the effects of interferon-free therapy on portal pressure, liver histology and plasma biomarkers in HIV/HCV-coinfected patients with PHT. METHODS: Twenty-two patients with paired hepatic venous pressure gradient (HVPG) measurements prior and after successful treatment (SVR) with interferon-free regimens were included...
January 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27908221/dasatinib-prevent-hepatic-fibrosis-induced-by-carbon-tetrachloride-ccl4-via-anti-inflammatory-and-antioxidant-mechanism
#3
Adel Mohammadalipour, Jamshid Karimi, Iraj Khodadadi, Ghasem Solgi, Mohammad Hashemnia, Nasrin Sheikh, Majid Bahabadi
OBJECTIVES: Dasatinib, a potent and broad-spectrum tyrosine kinase inhibitor, is approved for the treatment of imatinib-resistant chronic myelogenous leukemia. The aim of this study was to evaluate the anti-fibrotic, anti-inflammatory and antioxidant effects of this agent against CCl4-induced hepatic fibrosis and oxidative status. MATERIALS AND METHODS: Experimental fibrosis was induced in Wistar male rats by 12 weeks of CCl4 administration (i.p.). During the last 8 weeks of injection, rats were gavaged daily with Dasatinib (10 mg/kg)...
December 1, 2016: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/27904658/circulating-microparticles-enhanced-rat-vascular-wall-remodeling-following-endothelial-denudation
#4
Fan-Yen Lee, Hung-I Lu, Han-Tan Chai, Jiunn-Jye Sheu, Yi-Ling Chen, Tein-Hung Huang, Gour-Shenq Kao, Sheng-Yi Chen, Sheng-Ying Chung, Pei-Hsun Sung, Hsueh-Wen Chang, Mel S Lee, Hon-Kan Yip
This study tested the hypothesis that circulating microparticles (MPs) exacerbated vascular wall (VW) remodeling after endothelial denudation by 0.014 wire in a rat model. Adult male Sprague Dawley rats (n = 40) were equally categorized into group 1 [sham-control (SC); 3.0 mL saline intravenous injection], group 2 [SC + intravenous MPs (1.0 × 10(7)) derived from patients with carotid artery stenosis (CAS)], group 3 [femoral arterial endothelial denudation (FAED)], group 4 (FAED + MPs derived from healthy subjects), and group 5 (FAED + CAS-derived MPs)...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27903591/platelet-rich-plasma-powder-a-new-preparation-method-for-the-standardization-of-growth-factor-concentrations
#5
Matthias Kieb, Frank Sander, Cornelia Prinz, Stefanie Adam, Anett Mau-Möller, Rainer Bader, Kirsten Peters, Thomas Tischer
BACKGROUND: Platelet-rich plasma (PRP) is widely used in sports medicine. Available PRP preparations differ in white blood cell, platelet, and growth factor concentrations, making standardized research and clinical application challenging. PURPOSE: To characterize a newly standardized procedure for pooled PRP that provides defined growth factor concentrations. STUDY DESIGN: Controlled laboratory study. METHODS: A standardized growth factor preparation (lyophilized PRP powder) was prepared using 12 pooled platelet concentrates (PCs) derived from different donors via apheresis...
November 30, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27903395/-role-of-cytokine-matrix-metalloproteinase-axis-on-promoting-vascular-neointima-hyperplasia-in-mice
#6
Y Liu, W H Ning, X H Shen, D L Guo, L Guo
Objective: To observe the effects of tumor necrosis factor-α (TNF-α) and platelet derived growth factor (PDGF) on vascular neointimal hyperplasia on matrix metalloproteinase 9/2 gene knockout (MMP9/2(-/-)) mice and explore related mechanisms. Methods: Mice of control group, MMP9(-/-) group, MMP2(-/-) group and MMP9/2(-/-) group were studied. Femoral artery was injured by transluminal wire, the mRNA expression levels of TNF-α and PDGF on femoral artery were detected by RT-PCR; the protein expression of MMP9 and MMP2 were assessed by Western blot on day 0, 1, 3, 7, 14 and 28 post injury...
November 24, 2016: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/27903205/predicting-neurological-deficit-severity-due-to-subarachnoid-haemorrhage-soluble-cd40-ligand-and-platelet-derived-growth-factor-bb
#7
Yoshitaka Kubo, Takahiro Koji, Jun Yoshida, Akira Ogawa, Kuniaki Ogasawara
BACKGROUND: Several biological markers can predict outcomes in patients with subarachnoid haemorrhage (SAH), but markers to predict neurological deficit severity in patients with SAH and poor neurological condition have not yet been established. Soluble CD40 ligand (sCD40L) and platelet-derived growth factor (PDGF) are related to the systemic inflammatory response. OBJECTIVE: In a prospective study, to investigate the relationship between clinical outcomes and blood test results in patients with SAH and severe neurological deficits...
December 2016: Critical Care and Resuscitation: Journal of the Australasian Academy of Critical Care Medicine
https://www.readbyqxmd.com/read/27902740/extensive-characterization-and-comparison-of-endothelial-cells-derived-from-dermis-and-adipose-tissue-potential-use-in-tissue-engineering
#8
Hanneke N Monsuur, Ester M Weijers, Frank B Niessen, Amit Gefen, Pieter Koolwijk, Susan Gibbs, Lenie J van den Broek
Tissue-engineered constructs need to become quickly vascularized in order to ensure graft take. One way of achieving this is to incorporate endothelial cells (EC) into the construct. The adipose tissue stromal vascular fraction (adipose-SVF) might provide an alternative source for endothelial cells as adipose tissue can easily be obtained by liposuction. Since adipose-EC are now gaining more interest in tissue engineering, we aimed to extensively characterize endothelial cells from adipose tissue (adipose-EC) and compare them with endothelial cells from dermis (dermal-EC)...
2016: PloS One
https://www.readbyqxmd.com/read/27894125/intronic-polyadenylation-of-pdgfr%C3%AE-in-resident-stem-cells-attenuates-muscle-fibrosis
#9
Alisa A Mueller, Cindy T van Velthoven, Kathryn D Fukumoto, Tom H Cheung, Thomas A Rando
Platelet-derived growth factor receptor α (PDGFRα) exhibits divergent effects in skeletal muscle. At physiological levels, signalling through this receptor promotes muscle development in growing embryos and angiogenesis in regenerating adult muscle. However, both increased PDGF ligand abundance and enhanced PDGFRα pathway activity cause pathological fibrosis. This excessive collagen deposition, which is seen in aged and diseased muscle, interferes with muscle function and limits the effectiveness of gene- and cell-based therapies for muscle disorders...
November 28, 2016: Nature
https://www.readbyqxmd.com/read/27888226/single-cell-sequencing-maps-gene-expression-to-mutational-phylogenies-in-pdgf-and-egf-driven-gliomas
#10
Sören Müller, Siyuan John Liu, Elizabeth Di Lullo, Martina Malatesta, Alex A Pollen, Tomasz J Nowakowski, Gary Kohanbash, Manish Aghi, Arnold R Kriegstein, Daniel A Lim, Aaron Diaz
Glioblastoma multiforme (GBM) is the most common and aggressive type of primary brain tumor. Epidermal growth factor (EGF) and platelet-derived growth factor (PDGF) receptors are frequently amplified and/or possess gain-of-function mutations in GBM However, clinical trials of tyrosine-kinase inhibitors have shown disappointing efficacy, in part due to intra-tumor heterogeneity. To assess the effect of clonal heterogeneity on gene expression, we derived an approach to map single-cell expression profiles to sequentially acquired mutations identified from exome sequencing...
November 25, 2016: Molecular Systems Biology
https://www.readbyqxmd.com/read/27887787/vascular-endothelial-growth-factor-vegf-and-platelet-derived-growth-factor-pdgf-levels-in-the-cerebrospinal-fluid-of-children-with-influenza-associated-encephalopathy
#11
Shinichiro Morichi, Natsumi Morishita, Mika Takeshita, Yu Ishida, Shingo Oana, Gaku Yamanaka, Yasuyo Kashiwagi, Hisashi Kawashima
INTRODUCTION: To search for an index of neurologic prognosis of children with influenza-associated encephalopathy (IAE), involvement of angiogenesis-related growth factors in the pathology was investigated. PATIENTS AND METHODS: The subjects were 11 IAE patients, 6 patients with bacterial meningitis (BM), and 24 patients with non-central nervous system infection as a control group admitted to our hospital. The correlation between the vascular endothelial growth factor (VEGF) and platelet-derived growth factor (PDGF) levels in cerebrospinal fluid and the relationship with an index of inflammatory marker, interleukin (IL)-6, were investigated...
November 23, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/27886249/impairment-of-pdgf-induced-chemotaxis-by-extracellular-%C3%AE-synuclein-through-selective-inhibition-of-rac1-activation
#12
Taro Okada, Chihoko Hirai, Shaymaa Mohamed Mohamed Badawy, Lifang Zhang, Taketoshi Kajimoto, Shun-Ichi Nakamura
Parkinson's disease (PD) is characterized by α-synuclein (α-Syn)-positive intracytoplasmic inclusions, known as Lewy bodies. Although it is known that extracellular α-Syn is detected in the plasma and cerebrospinal fluid, its physiological significance remains unclear. Here, we show that extracellular α-Syn suppresses platelet-derived growth factor (PDGF)-induced chemotaxis in human neuroblastoma SH-SY5Y cells. The inhibitory effect was stronger in the mutant α-Syn(A53T), found in hereditary PD, and the degree of inhibition was time-dependent, presumably because of the oligomerization of α-Syn...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27886192/phytanic-acid-attenuates-insulin-like-growth-factor-1-activity-via-nitric-oxide-mediated-%C3%AE-secretase-activation-in-rat-aortic-smooth-muscle-cells-possible-implications-for-pathogenesis-of-infantile-refsum-disease
#13
Gursev S Dhaunsi, Mayra Alsaeid, Saghir Akhtar
BACKGROUND: Infantile Refsum disease (IRD), a peroxisomal disease with defective phytanic acid oxidation, causes neurological impairment and development delay. Insulin-like growth factor-1 (IGF-1) regulates child development and to understand molecular mechanism(s) of IRD, we examined the effect of PA on IGF-1 activity. METHODS: BrdU incorporation was measured in rat aortic smooth muscle cell (SMC) cultures following treatment with fetal bovine serum (FBS), basic fibroblast growth factor (bFGF), platelet-derived growth factor (PDGF) or IGF-1 in the absence or presence of PA...
November 25, 2016: Pediatric Research
https://www.readbyqxmd.com/read/27883059/hepatic-satb1-induces-paracrine-activation-of-hepatic-stellate-cells-and-is-upregulated-by-hbx
#14
Jin Gong, Wei Tu, Jian Han, Jiayi He, Jingmei Liu, Ping Han, Yunwu Wang, Mengke Li, Mei Liu, Jiazhi Liao, Dean Tian
Chronic hepatitis B virus (HBV) infection is a major cause of chronic liver diseases, but its involvement in hepatic fibrogenesis remains unclear. Special AT-rich binding protein 1 (SATB1) has been implicated in reprogramming chromatin organization and transcription profiles in many cancers and non-cancer-related conditions. We found that hepatic SATB1 expression was significantly up-regulated in fibrotic tissues from chronic hepatitis B virus (HBV)-infected patients and HBV transgenic (HBV-Tg) mouse model...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27881420/elongation-of-long-chain-fatty-acid-family-member-6-elovl6-driven-fatty-acid-metabolism-regulates-vascular-smooth-muscle-cell-phenotype-through-amp-activated-protein-kinase-kr%C3%A3-ppel-like-factor-4-ampk-klf4-signaling
#15
Hiroaki Sunaga, Hiroki Matsui, Saki Anjo, Mas Risky A A Syamsunarno, Norimichi Koitabashi, Tatsuya Iso, Takashi Matsuzaka, Hitoshi Shimano, Tomoyuki Yokoyama, Masahiko Kurabayashi
BACKGROUND: Fatty acids constitute the critical components of cell structure and function, and dysregulation of fatty acid composition may exert diverging vascular effects including proliferation, migration, and differentiation of vascular smooth muscle cells (VSMCs). However, direct evidence for this hypothesis has been lacking. We investigated the role of elongation of long-chain fatty acid member 6 (Elovl6), a rate-limiting enzyme catalyzing the elongation of saturated and monounsaturated long-chain fatty acid, in the regulation of phenotypic switching of VSMC...
November 23, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27873355/isoquercitrin-protects-against-pulmonary-hypertension-via-inhibiting-pasmcs-proliferation
#16
Yongtao Zhang, Yuqian Cui, Wei Deng, Hao Wang, Weidong Qin, Chengmin Huang, Chen Li, Jianning Zhang, Yuan Guo, Dawei Wu, Haipeng Guo
Pulmonary vascular remodeling is a common feature among the heterogeneous disorders that cause pulmonary arterial hypertension (PAH), and pulmonary arterial smooth muscle cells (PASMCs) proliferation impact the long-term prognosis of the patient. Isoquercitrin (IQC) is a flavonoid with anti-oxidative, anti-inflammatory and anti-proliferative activations. This study aimed to investigate whether IQC could prevent PASMCs proliferation and vascular remodeling in monocrotaline (MCT) induced PAH. Male Wistar rats were administered with vehicle or 0...
November 22, 2016: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/27871410/vancouver-experience-of-recombinant-human-platelet-derived-growth-factor
#17
REVIEW
Alistair Younger, Murray Penner, Harvey E Montijo
Joint arthrodesis utilizing autogenous bone graft remains the gold standard of treatment in fusion procedures of the foot and ankle. Graft harvest, however, has been associated with increased morbidity to patients as well as increased costs. With this in mind, multiple clinical studies have evaluated the efficacy of recombinant human platelet-derived growth factor (rh-PDGF-BB) with beta-tricalcium phosphate (B-TCP) to augment in foot and ankle arthrodesis with favorable results. These factors have led to the increased use of rh-PDGF-BB with B-TCP in Vancouver with good clinical results...
December 2016: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/27871176/in-vivo-angiogenic-capacity-of-stem-cells-from-human-exfoliated-deciduous-teeth-with-human-umbilical-vein-endothelial-cells
#18
Ji-Hye Kim, Gee-Hye Kim, Jae-Won Kim, Hee Jang Pyeon, Jae Cheoun Lee, Gene Lee, Hyun Nam
Dental pulp is a highly vascularized tissue requiring adequate blood supply for successful regeneration. In this study, we investigated the functional role of stem cells from human exfoliated deciduous teeth (SHEDs) as a perivascular source for in vivo formation of vessel-like structures. Primarily isolated SHEDs showed mesenchymal stem cell (MSC)-like characteristics including the expression of surface antigens and in vitro osteogenic and adipogenic differentiation potentials. Moreover, SHEDs were positive for NG2, α-smooth muscle actin (SMA), platelet-derived growth factor receptor beta (PDGFRβ), and CD146 as pericyte markers...
November 30, 2016: Molecules and Cells
https://www.readbyqxmd.com/read/27866242/elevated-systemic-interleukin-7-in-patients-with-colorectal-cancer-and-individuals-at-high-risk-of-cancer-association-with-lymph-node-involvement-and-tumor-location-in-the-right-colon
#19
Malgorzata Krzystek-Korpacka, Marek Zawadzki, Katarzyna Neubauer, Iwona Bednarz-Misa, Sabina Górska, Jerzy Wiśniewski, Wojciech Witkiewicz, Andrzej Gamian
Interleukin (IL)-7 is a cytokine essential for protective immunity, and it is considered as a promising agent for cancer immunotherapy. Recent studies, however, appear to associate IL-7 with aggressiveness of solid tumors. The IL-7 has been less studied in colorectal cancer (CRC) and conditions associated with increased risk of CRC development. To explore IL-7 status in bowel diseases, it was measured immunofluorometrically in 431 individuals (110 with CRC) by using Luminex platform. A level of IL-7 in CRC patients was significantly higher than in controls, did not differ from those with adenomas, but was lower than in both active and inactive inflammatory bowel disease (IBD) cases...
November 19, 2016: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/27865109/carbon-based-nanocomposites-with-aptamer-templated-silver-nanoclusters-for-the-highly-sensitive-and-selective-detection-of-platelet-derived-growth-factor
#20
Zhihong Zhang, Chuanpan Guo, Shuai Zhang, Linghao He, Minghua Wang, Donglai Peng, Junfeng Tian, Shaoming Fang
We synthesized two kinds of carbon-based nanocomposites of silver nanoclusters (AgNCs). An aptamer for targeted platelet-derived growth factor-BB (PDGF-BB) detection was used as the organic phase to produce AgNCs@Apt, three dimensional reduced graphene oxide@AgNCs@Aptamer (3D-rGO@AgNCs@Apt), and graphene quantum dots@AgNCs@Aptamer (GQD@AgNCs@Apt) nanocomposites. The formation mechanism of the developed nanocomposites was described by detailed characterizations of their chemical and crystal structures. Subsequently, the as-synthesized nanoclusters containing aptamer strands were applied as the sensitive layers to fabricate a novel electrochemical aptasensor for the detection of PDGF-BB, which may be directly used to determine the target protein...
November 12, 2016: Biosensors & Bioelectronics
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