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https://www.readbyqxmd.com/read/29145967/bone-intramedullary-reaming-grafts-the-fracture-site-with-cd146-skeletal-progenitors-and-downmodulates-the-inflammatory-environment
#1
Leonardo R Rocha, Rafaela C Sartore, Ana C Leal, Rhayra B Dias, Maria Eugenia L Duarte, João Antônio M Guimarães, Danielle C Bonfim
INTRODUCTION: Femoral shaft fractures generally occur in young adults following a high-energy trauma and are prone to delayed union/non-union. Novel therapies to stimulate bone regeneration will have to mimic some of the aspects of the biology of fracture healing; however, which are these aspects is unclear. Locked intramedullary nailing is the current treatment of choice for the stabilisation of femur shaft fractures, and it is associated with accelerated healing and increased union rates...
October 2017: Injury
https://www.readbyqxmd.com/read/29143227/pdgfr-inhibition-mediated-intracellular-signalling-in-c6-glioma-growth-and-migration-role-of-erk-and-rock-pathway
#2
Juhi Singh, Kedarlal Sharma, Prakash P Pillai
Aberrant PDGFR (Platelet derived growth factor receptor) signalling in brain tumors and gliomas is one of the primary cause of tumor progression. PDGFR stimulation by its ligand and the role of its downstream mediators such as extracellular regulated kinases (ERK1/2), PI3K and ROCK pathways have not been thoroughly investigated. The present study sought to investigate the role of PDGF receptor signalling inhibition on suppression of rat C6 glioma growth and migration. Treatment of C6 cells with PDGFR inhibitor, AG1295 caused a significant reduction in migration and proliferation by regulating the ERK and ROCK signalling...
November 15, 2017: Cytotechnology
https://www.readbyqxmd.com/read/29137923/the-pdgf-pdgfr-pathway-as-a-drug-target
#3
REVIEW
Natalia Papadopoulos, Johan Lennartsson
Platelet-derived growth factors (PDGF) promotes cell proliferation, survival and migration, primarily of cells of mesenchymal origin. Dysfunction of PDGF signaling has been observed in a wide array of pathological conditions, such as cancer, fibrosis, neurological conditions and atherosclerosis. Reported abnormalities of the PDGF pathway include overexpression or amplification of PDGF receptors (PDGFRs), gain of function point mutations or activating chromosomal translocations. Current development of therapeutic drugs often aims at producing compounds that specifically target interaction between PDGFs and their receptors by specific DNA aptamers and ligand traps, or downregulate PDGFRs with blocking antibodies, or inhibit tyrosine kinase activity of PDGFRs with small molecules...
November 11, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/29133857/pdgfr-modulated-mir-23b-cluster-and-mir-125a-5p-suppress-lung-tumorigenesis-by-targeting-multiple-components-of-kras-and-nf-kb-pathways
#4
Srivatsava Naidu, Lei Shi, Peter Magee, Justin D Middleton, Alessandro Laganá, Sudhakar Sahoo, Hui Sun Leong, Melanie Galvin, Kristopher Frese, Caroline Dive, Vincenza Guzzardo, Matteo Fassan, Michela Garofalo
In NSCLC alterations in PDGF receptors are markers of worst prognosis and efficient targeting of these receptors is yet to be achieved. In this study, we explored PDGFR-regulated microRNAs demonstrating that miR-23b cluster and miR-125a-5p are downregulated by increased expression of PDGFR-α or PDGFR-β in NSCLC cells. Mechanistically, the expression of these microRNAs is positively regulated by p53 and negatively modulated by NF-kB p65. Forced expression of miR-23b cluster or miR-125a-5p enhanced drug sensitivity and suppressed invasiveness of NSCLC cells by silencing several genes involved in oncogenic KRAS and NF-kB pathways, including SOS1, GRB2, IQGAP1, RALA, RAF-1, IKKβ, AKT2, ERK2 and KRAS itself...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29132130/effect-of-huagantongluofang-a-chinese-traditional-medicine-in-hepatic-fibrogenesis-in-a-mouse-model-of-biliary-cirrhosis
#5
Ji Xuan, Wei Wen, Yong Wang, Feng Wang, Hua-Bing Xu, Mei Shao, Ya Yang, Yao-Zhou Tian
BACKGROUND: Biliary cirrhosis (BC) is a chronic cholestatic liver disease, in which hepatic fibrosis is an early symptom. This study aimed to identify the biological function and the therapeutic effect of a Chinese traditional medicine, HuaGanTongLuoFang (HGTLF), in a mouse model of BC. METHODS: The mice (n = 72) were randomly divided into a sham group (n =12) and BC group (n = 60). The animals in the BC group were then randomly divided into five groups (n = 12 in each) and treated with three different doses of HGTLF, ureodeoxycholic acid (UDCA), or normal saline (the model group)...
November 13, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29131001/atorvastatin-calcium-inhibits-pdgf-%C3%AE-%C3%AE-induced-proliferation-and-migration-of-vsmcs-through-the-g0-g1-cell-cycle-arrest-and-suppression-of-activated-pdgfr%C3%AE-pi3k-akt-signaling-cascade
#6
Shuang Chen, Siyuan Dong, Zhao Li, Xiaofan Guo, Naijin Zhang, Bo Yu, Yingxian Sun
BACKGROUND/AIMS: Abnormal proliferation of vascular smooth muscle cells (VSMCs) is a hallmark of vascular lesions, such as atherosclerosis and restenosis. PDGF-ββ, an isoform of PDGF (platelet-derived growth factor), has been demonstrated to induce proliferation and migration of VSMCs. Atorvastatin calcium, a selective inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, has favorable protective effects on VSMCs. This study examined the effects of atorvastatin calcium on the proliferation and migration of PDGF-ββ-treated VSMCs, as well as its underlying mechanisms...
November 9, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29129647/salivary-biomarker-combination-prediction-model-for-the-diagnosis-of-periodontitis-in-a-taiwanese-population
#7
Yun-Chun Wu, Lee Ning, Yu-Kang Tu, Chen-Pang Huang, Nien-Tsu Huang, Yih-Fan Chen, Po-Chun Chang
BACKGROUND/PURPOSE: This study aimed at screening the diagnostic potential of salivary biomarkers and pairing them to establish a prediction model with higher accuracy in diagnosing periodontitis in the Taiwanese population. METHODS: Fifty-seven participants were divided into a non-periodontitis group and a periodontitis group. Salivary biomarkers CRP, IL-6, IL-8, IL-1β, IL-1ra, lactoferrin, MMP-8, MMP-9, PDGF-BB, TNF-α, and VEGF, were analyzed. The potential and reliability of the biomarkers for diagnosing periodontitis were analyzed dichotomously...
November 9, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/29129515/amygdalin-improves-microcirculatory-disturbance-and-attenuates-pancreatic-fibrosis-by-regulating-the-expression-of-endothelin-1-and-calcitonin-gene-related-peptide-in-rats
#8
Xiangqun Zhang, Jiangong Hu, Yuzhen Zhuo, Lihua Cui, Caixia Li, Naiqiang Cui, Shukun Zhang
BACKGROUND: The pathogenesis of chronic pancreatitis (CP) is a complex process of interaction between tissue injury and repair, which involves microcirculatory disturbance. Amygdalin, an effective component extracted from Semen Persicae (a kind of Chinese herbal medicine), can decrease blood viscosity and improve microcirculation. In this study, we investigated the therapeutic effects of amygdalin on pancreatic fibrosis in rats with CP. METHODS: The rat CP model was induced by injecting dibutyltin dichloride (DBTC) into the right caudal vein...
November 9, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29127351/pdgf-family-expression-in-glioblastoma-multiforme-data-compilation-from-ivy-glioblastoma-atlas-project-database
#9
Isabella Gomes Cantanhede, João Ricardo Mendes de Oliveira
Glioblastoma Multiforme (GBM) is the most frequent and lethal primary brain cancer. Due to its therapeutic resistance and aggressiveness, its clinical management is challenging. Platelet-derived Growth Factor (PDGF) genes have been enrolled as drivers of this tumour progression as well as potential therapeutic targets. As detailed understanding of the expression pattern of PDGF system in the context of GBM intra- and intertumoral heterogeneity is lacking in the literature, this study aims at characterising PDGF expression in different histologically-defined GBM regions as well as investigating correlation of these genes expression with parameters related to poor prognosis...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29125972/a-biolayer-interferometry-based-enzyme-linked-aptamer-sorbent-assay-for-real-time-and-highly-sensitive-detection-of-pdgf-bb
#10
Shunxiang Gao, Xin Zheng, Jihong Wu
Accurate, fast and sensitive detection of disease-specific protein biomarkers, especially in blood, urine, or other bodily fluids, is an important approach to achieve early disease diagnosis. Platelet-derived growth factor-BB (PDGF-BB), a widely used biomarker, is involved in a substantial number of serious diseases, such as hepatic fibrosis, atherosclerosis, age-related macular degeneration and diabetic eye disease and is often over-expressed in human malignant tumors. Therefore, the development of sensitive and specific detection methods for PDGF-BB is of great importance for the early diagnosis of disease and assessments of patient recovery...
November 7, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29125132/chitosan-inhibits-platelet-mediated-clot-retraction-increases-platelet-derived-growth-factor-release-and-increases-residence-time-and-bioactivity-of-platelet-rich-plasma-in-vivo
#11
Gabrielle Deprés-Tremblay, Anik Chevrier, Nicolas Tran-Khanh, Monica Nelea, Michael D Buschmann
Platelet-rich plasma (PRP) has been used to treat different orthopedic conditions, however, the clinical benefits of using PRP remain uncertain. Chitosan (CS)-PRP implants have been shown to improve meniscus, rotator cuff and cartilage repair in pre-clinical models. The purpose of this current study was to investigate in vitro and in vivo mechanisms of action of CS-PRP implants. Freeze-dried formulations containing 1% (w/v) CS (80% degree of deacetylation and number average molar mass 38 kDa), 1% (w/v) trehalose as a lyoprotectant and 42...
November 10, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/29124511/effect-of-shear-stress-on-the-migration-of-hepatic-stellate-cells
#12
Toshihiro Sera, Tateki Sumii, Ryosuke Fujita, Susumu Kudo
When the liver is damaged, hepatic stellate cells (HSCs) can change into an activated, highly migratory state. The migration of HSCs may be affected by shear stress due not only to sinusoidal flow but also by the flow in the space of Disse because this space is filled with blood plasma. In this study, we evaluated the effects of shear stress on HSC migration in a scratch-wound assay with a parallel flow chamber. At regions upstream of the wound area, the migration was inhibited by 0.6 Pa and promoted by 2...
November 9, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/29123981/coculture-of-endothelial-progenitor-cells-and-mesenchymal-stem-cells-enhanced-their-proliferation-and-angiogenesis-through-pdgf-and-notch-signaling
#13
Tangzhao Liang, Lei Zhu, Wenling Gao, Ming Gong, Jianhua Ren, Hui Yao, Kun Wang, Dehai Shi
The beneficial effects of combined use of mesenchymal stem cells (MSCs) and endothelial progenitor cells (EPCs) on tissue repair and regeneration after injury have been demonstrated, but the underlying mechanism remains incompletely understood. This study aimed to investigate the effects of direct contact coculture of human bone marrow-derived EPCs (hEPCs)/human bone marrow-derived MSCs (hMSCs) on their proliferation and angiogenic capacities and the underlying mechanism. hEPCs and hMSCs were cocultured in a 2D mixed monolayer or a 3D transwell membrane cell-to-cell coculture system...
November 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/29121822/investigation-of-efficacy-of-treatment-in-spinal-cord-injury-erythropoietin-versus-methylprednisolone
#14
Okan Ozkunt, Kerim Sariyilmaz, Halil Can Gemalmaz, Seren Gülsen Gürgen, Ulaş Yener, Fatih Dikici
BACKGROUND: Investigation of the expression of platelet-derived growth factor (PDGF)-β and glial fibrillary acidic protein (GFAP) in rats with spinal cord injury as a marker of neurologic recovery between groups treated with erythropoietin (EPO) and methylprednisolone (MP). METHODS: Thirty adult female rats were randomly divided into three even groups. A laminectomy was applied to thoracic ninth vertebra and contusion injury was induced by extradural application of an aneurysm clip...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29119737/endostatin-inhibits-fibrosis-by-modulating-the-pdgfr-erk-signal-pathway-an-in-vitro-study
#15
Yuan Li, Hai-Tao Ren
Accumulating evidence indicates that endostatin inhibits fibrosis. However, the mechanism is yet to be clarified. The aim of this study is to evaluate the effect of endostatin on platelet-derived growth factor-BB (PDGF-BB)- or transforming growth factor β1 (TGF-β1)-induced fibrosis in cultured human skin fibroblasts, and to further examine the molecular mechanisms involved. Human dermal fibroblasts were cultured in Dulbecco's modified Eagle's medium (DMEM) and serum-starved for 48 h before treatment. Cells were grouped as follows: "PDGF-BB", "PDGF-BB+ endostatin", "TGF-β1", "TGF-β1+endostatin", "endostatin", and "blank control"...
2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/29118903/mir-665-regulates-vsmcs-proliferation-via-targeting-fgf9-and-mef2d-and-modulating-activities-of-wnt-%C3%AE-catenin-signaling
#16
Kai Li, Jin Pan, Jianjun Wang, Fengrui Liu, Li Wang
Abnormal proliferation of vascular smooth muscle cells (VSMCs) contributes to the development of cardiovascular diseases. Studies have showed the great impact of microRNAs (miRNAs) on the cell proliferation in VSMCs. This study examined the in vitro functional roles of miR-665 in the VSMCs and explored the underlying molecular mechanisms. The mRNA and protein expression levels were determined by qRT-PCR and western blot assays, respectively. CCK-8, transwell invasion and wound healing assays were performed to measure VSMCs proliferation, invasion and migration, respectively...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29117277/naringenin-eye-drops-inhibit-corneal-neovascularization-by-anti-inflammatory-and-antioxidant-mechanisms
#17
Ana P M T Oguido, Miriam S N Hohmann, Felipe A Pinho-Ribeiro, Jefferson Crespigio, Talita P Domiciano, Waldiceu A Verri, Antonio M B Casella
Purpose: To investigate the effect of naringenin eye drops in corneal neovascularization induced by alkali (1 N NaOH) burn in mice. Methods: Corneal neovascularization in the right eye of male Swiss mice was induced by alkali. Treatment with naringenin eye drops (0.08-80 μg; 8 μL of 0.01-10 g/L solution) or vehicle (saline) started 2 days before corneal neovascularization was induced and was performed twice a day. Mice were treated up until the time animals were euthanized and cornea tissue was collected for testing, which was 2, 4, and 6 hours after alkali stimulus for cytokine and antioxidant capacity measurements, and 3 and/or 7 days after alkali stimulus for the assessment of corneal epithelial thickness and neovascularization, neutrophil, and macrophage recruitment, and vascular endothelial growth factor (Vegf), platelet-derived growth factor (Pdgf), matrix metalloproteinase-14 (Mmp14), and pigment epithelium-derived factor (Pedf) mRNA expression...
November 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29116547/the-bpd-trio-interaction-of-dysregulated-pdgf-vegf-and-tgf-signaling-in-neonatal-chronic-lung-disease
#18
REVIEW
Prajakta Oak, Anne Hilgendorff
The development of neonatal chronic lung disease (nCLD), i.e., bronchopulmonary dysplasia (BPD) in preterm infants, significantly determines long-term outcome in this patient population. Risk factors include mechanical ventilation and oxygen toxicity impacting on the immature lung resulting in impaired alveolarization and vascularization. Disease development is characterized by inflammation, extracellular matrix remodeling, and apoptosis, closely intertwined with the dysregulation of growth factor signaling...
November 7, 2017: Molecular and Cellular Pediatrics
https://www.readbyqxmd.com/read/29113690/mesoderm-mesenchyme-homeobox-gene-l-promotes-vascular-smooth-muscle-cell-phenotypic-modulation-and-vascular-remodeling
#19
Bing Wu, Lei Zhang, Yun-He Zhu, You-En Zhang, Fei Zheng, Jian-Ye Yang, Ling-Yun Guo, Xing-Yuan Li, Lu Wang, Jun-Ming Tang, Shi-You Chen, Jia-Ning Wang
AIMS: To investigate the role of mesoderm/mesenchyme homeobox gene l (Meox1) in vascular smooth muscle cells (SMCs) phenotypic modulation during vascular remodeling. METHODS AND RESULTS: By using immunostaining, Western blot, and histological analyses, we found that Meox1 was up-regulated in PDGF-BB-treated SMCs in vitro and balloon injury-induced arterial SMCs in vivo. Meox1 knockdown by shRNA restored the expression of contractile SMCs phenotype markers including smooth muscle α-actin (α-SMA) and calponin...
October 31, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29112932/anti-atherosclerotic-effect-of-longxuetongluo-capsule-in-high-cholesterol-diet-induced-atherosclerosis-model-rats
#20
J M Zhou, H M Wang, Y Z Lv, Z Z Wang, W Xiao
Chinese dragon's blood, the red resin of Dracaena cochinchinensis, one of the famous traditional medicines, has been used to promote blood circulation, disperse blood stasis, stop bleeding, relieve pain and muscle regeneration for thousands of years. The aims of this study were to evaluate the anti-atherosclerotic effect of Longxuetongluo Capsule (LTC), which made by total phenolic compounds of Chinese dragon's blood, in high cholesterol diet (HCD)-induced atherosclerosis model rats and explore the possible mechanism...
November 4, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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