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https://www.readbyqxmd.com/read/28823103/bariatric-surgery-is-accompanied-by-changes-in-extracellular-vesicle-associated-and-plasma-fatty-acid-binding-protein-4
#1
Justyna K Witczak, Thinzar Min, Sarah L Prior, Jeffrey W Stephens, Philip E James, Aled Rees
BACKGROUND: Bariatric surgery markedly reduces fat mass with beneficial effects on cardiometabolic health but the mechanisms involved are not fully understood. Extracellular vesicles (EVs) are secreted by a variety of cells, including adipocytes, and may mediate some of these benefits. However, the effects of bariatric surgery on circulating EVs are unclear. METHODS: Concentration of plasma EVs isolated by ultracentrifugation at baseline, 1 and 6 months post-bariatric surgery (n = 20) was established using Nanoparticle Tracking Analysis...
August 19, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28822917/coexistence-of-aberrant-hematopoietic-and-stromal-elements-in-myelodysplastic-syndromes
#2
Salar Abbas, Archana Kini, Vivi M Srivastava, Marie Therese M, Sukesh C Nair, Aby Abraham, Vikram Mathews, Biju George, Sanjay Kumar, Aparna Venkatraman, Alok Srivastava
Myelodysplastic syndromes (MDS) are a group of clonal hematopoietic disorders related to hematopoietic stem and progenitor cell dysfunction. Several studies have shown the role of the bone marrow microenvironment in regulating hematopoietic stem, and progenitor function and their individual abnormalities have been associated with disease pathogenesis. In this study, we simultaneously evaluated hematopoietic stem cells (HSC), hematopoietic stem progenitor cells (HSPCs) and different stromal elements in a cohort of patients with MDS-refractory cytopenia with multilineage dysplasia (RCMD)...
August 9, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28822888/apatinib-enhances-antitumour-activity-of-egfr-tkis-in-non-small-cell-lung-cancer-with-egfr-tki-resistance
#3
Fang Li, Tengjiao Zhu, Baoshan Cao, Jiadong Wang, Li Liang
BACKGROUND: Epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs)-rechallenged therapy for EGFR-mutant non-small cell lung cancer (NSCLC) patients who acquired resistance showed moderate efficacy. Considering the high interrelation between EGFR and vascular endothelial growth factor/vascular endothelial growth factor receptor (VEGF/VEGFR) pathways, we firstly evaluated EGFR-TKI combined with apatinib (a highly selective VEGFR2 inhibitor) in EGFR-TKI-resistant model and patients...
August 17, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28822873/surface-modification-of-an-intraocular-lens-material-by-plasma-assisted-grafting-with-2-hydroxyethyl-methacrylate-hema-for-controlled-release-of-moxifloxacin
#4
A Paula Vieira, Andreia F R Pimenta, Diana Silva, M Helena Gil, Patrícia Alves, Patrícia Coimbra, José L G C Mata, Dimitriya Bozukova, Tiago R Correia, Ilídio J Correia, A Paula Serro, A Jorge Guiomar
Endophthalmitis, an inflammation of the eye due to perioperative infection, may occur after cataract surgery. Intraocular lenses (IOLs) loaded with an antibiotic have been proposed as an alternative to the conventional postoperative endophthalmitis prophylaxis, since the antibiotic is delivered directly to the target site. In this work, an IOL-based antibiotic releasing system was prepared from a copolymer used in the production of IOLs and a fluoroquinolone used in endophthalmitis prophylaxis (moxifloxacin, MFX)...
August 16, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28822802/stromal-expression-of-activated-leukocyte-cell-adhesion-molecule-alcam-promotes-lung-tumor-growth-and-metastasis
#5
Ann-Helen Willrodt, Michal Beffinger, Martina Vranova, Darya Protsyuk, Katja Schuler, Maria Jadhav, Mathias Heikenwalder, Maries van den Broek, Lubor Borsig, Cornelia Halin Winter
Activated leukocyte cell adhesion molecule (ALCAM) is expressed on various cell types, including leukocytes, endothelial cells and certain tumor cells. While ALCAM expression on tumor cells has been linked with tumor invasion and metastatic spread, the contribution of ALCAM expressed in cells forming the tumor stroma to cancer progression has not been investigated. In this study, we made use of ALCAM-deficient (ALCAM(-/-)) mice to evaluate the role of ALCAM in lung tumor growth and metastasis. ALCAM(-/-) mice displayed an altered blood vascular network in the lung and the diaphragm, indicative of an angiogenesis defect...
August 16, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28822229/vasculogenesis-and-angiogenesis-initiation-under-normoxic-conditions-through-wnt-%C3%AE-catenin-pathway-in-gliomas
#6
Alexandre Vallée, Rémy Guillevin, Jean-Noël Vallée
The canonical Wnt/β-catenin pathway is up-regulated in gliomas and involved in proliferation, invasion, apoptosis, vasculogenesis and angiogenesis. Nuclear β-catenin accumulation correlates with malignancy. Hypoxia activates hypoxia-inducible factor (HIF)-1α by inhibiting HIF-1α prolyl hydroxylation, which promotes glycolytic energy metabolism, vasculogenesis and angiogenesis, whereas HIF-1α is degraded by the HIF prolyl hydroxylase under normoxic conditions. We focus this review on the links between the activated Wnt/β-catenin pathway and the mechanisms underlying vasculogenesis and angiogenesis through HIF-1α under normoxic conditions in gliomas...
August 19, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28822192/-taurine-affects-expression-of-icam-1-vcam-1-by-p38-pathway-in-hypoxic-endothelial-cells
#7
Xiao-Dan Zhang, Shu-Ya Zhao, Yun-Lin Li, Da-Ling Zhu, Ru Zhang, Jie-Jing Sheng, Shu-Jing Wang
To investigate the effect of taurine(Tau) on ICAM-1, VCAM-1 by p-p38 pathway in bovine pulmonary artery endothelial cells(PAECs) and explore its mechanism of action. Generation 4-12 cells in primary cultures of PAECs were used in experiments and divided into five groups: control group, hypoxia(hyp) group, inhibitor(SB203580) group, treatment(Tau) group, and treatment+inhibitor(SB+Tau) group. The concentration of Tau:100 mmol•L⁻¹; p38 inhibitor SB203580: 20 μmol•L⁻¹; and the treatment time was 12 h...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28822169/-effect-factors-and-mechanisms-of-borneol-s-bidirectional-regulation-on-blood-brain-barrier-permeability
#8
Hong-Jin Wang, Jun-Jie Wu, Qiang Xue, Ji-Fen Zhang, Xiao-Yu Xu
In recent twenty years, there are a lot of studies about the effect of borneol on permeability of blood-brain barrier(BBB); however, it isDODOrt of regular conclusions of effect factors and in-depth analysis of functional mechanisms. The current researching data were collected and analyzed in this paper for illuminating the effect factors and mechanisms of borneol on permeability of BBB.The following conclusions were obtained: five factors about borneol influencing the permeability of BBB. First, opticity activity of borneol had no significant effect on action effects...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28822114/glycosylation-of-dentin-matrix-protein-1-is-a-novel-key-element-for-astrocyte-maturation-and-bbb-integrity
#9
Bo Jing, Chunxue Zhang, Xianjun Liu, Liqiang Zhou, Jiping Liu, Yinan Yao, Juehua Yu, Yuteng Weng, Min Pan, Jie Liu, Zuolin Wang, Yao Sun, Yi Eve Sun
The blood-brain barrier (BBB) is a tight boundary formed between endothelial cells and astrocytes, which separates and protects brain from most pathogens as well as neural toxins in circulation. However, detailed molecular players involved in formation of BBB are not completely known. Dentin matrix protein 1 (DMP1)-proteoglycan (PG), which is known to be involved in mineralization of bones and dentin, is also expressed in soft tissues including brain with unknown functions. In the present study, we reported that DMP1-PG was expressed in brain astrocytes and enriched in BBB units...
August 18, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28821752/hybrid-nitric-oxide-donor-and-its-carrier-for-the-treatment-of-peripheral-arterial-diseases
#10
Duong Q Le, Aneetta E Kuriakose, Dat X Nguyen, Kytai T Nguyen, Suchismita Acharya
Nitric oxide (NO) has been known to promote physiological angiogenesis to treat peripheral arterial diseases (PAD) by increasing the vascular endothelial growth factor (VEGF) level in endothelial cells (ECs) and preventing platelet adherence and leukocyte chemotaxis. However, the ongoing ischemic event during peripheral ischemia produces superoxide and diminishes the NO bioavailability by forming toxic peroxynitrite anion. Here we disclose an efficacious hybrid molecule 4-(5-Amino-1,2,3-oxadiazol-3-yl)-2,2,6,6-tetramethyl-1-piperidinol (SA-2) containing both antioxidant and NO donor functionalities that provide a therapeutic level of NO necessary to promote angiogenesis and to protect ECs against hydrogen peroxide-induced oxidative stress...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821742/rock-1-mediates-diabetes-induced-retinal-pigment-epithelial-and-endothelial-cell-blebbing-contribution-to-diabetic-retinopathy
#11
Pierre-Raphaël Rothschild, Sawsen Salah, Marianne Berdugo, Emmanuelle Gélizé, Kimberley Delaunay, Marie-Christine Naud, Christophe Klein, Alexandre Moulin, Michèle Savoldelli, Ciara Bergin, Jean-Claude Jeanny, Laurent Jonet, Yvan Arsenijevic, Francine Behar-Cohen, Patricia Crisanti
In diabetic retinopathy, the exact mechanisms leading to retinal capillary closure and to retinal barriers breakdown remain imperfectly understood. Rho-associated kinase (ROCK), an effector of the small GTPase Rho, involved in cytoskeleton dynamic regulation and cell polarity is activated by hyperglycemia. In one year-old Goto Kakizaki (GK) type 2 diabetic rats retina, ROCK-1 activation was assessed by its cellular distribution and by phosphorylation of its substrates, MYPT1 and MLC. In both GK rat and in human type 2 diabetic retinas, ROCK-1 is activated and associated with non-apoptotic membrane blebbing in retinal vessels and in retinal pigment epithelium (RPE) that respectively form the inner and the outer barriers...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821556/dasatinib-reversibly-disrupts-endothelial-vascular-integrity-by-increasing-non-muscle-myosin-ii-contractility-in-a-rock-dependent-manner
#12
Anna Kreutzman, Beatriz Colom-Fernández, Ana Marcos Jiménez, Mette Ilander, Carlos Cuesta-Mateos, Yaiza Perez-García, Cristina Delgado Arévalo, Oscar Brück, Henna Hakanen, Jani Saarela, Alvaro Ortega-Carrión, Ana de Rosendo, Alba Juanes-García, Juan Luis Steegmann, Satu Mustjoki, Miguel Vicente-Manzanares, Cecilia Muñoz-Calleja
Purpose: Dasatinib is a short-acting dual ABL/SRC family tyrosine kinase inhibitor (TKI), which is frequently used to treat chronic myeloid leukemia. Although very effective, dasatinib often displays severe adverse effects, including pleural effusions and increased risk of bleeding primarily in the gastrointestinal tract. The actual causes of these side effects are currently undetermined. We hypothesize that endothelial cells (ECs) that line the inner walls of blood vessels and control the traffic to the underlying tissues, might be involved...
August 18, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28821462/ferritin-nanocage-with-intrinsically-disordered-proteins-and-affibody-a-platform-for-tumor-targeting-with-extended-pharmacokinetics
#13
Na Kyeong Lee, Eun Jung Lee, Soyoun Kim, Gi-Hoon Nam, Minwoo Kih, Yeonsun Hong, Cherlhyun Jeong, Yoosoo Yang, Youngro Byun, In-San Kim
Ferritin nanocages are of particular interest as a novel platform for drug and vaccine delivery, diagnosis, biomineralization scaffold and more, due to their perfect and complex symmetry, ideal physical properties, high biocompatibility, low toxicity profiles as well as easy manipulation by genetic or chemical strategies. However, a short half-life is still a hurdle for the translation of ferritin-based nanomedicines into the clinic. Here, we developed a series of rationally designed long circulating ferritin nanocages (LCFNs) with 'Intrinsically Disordered Proteins (IDP)' as a stealth layer for extending the half-life of ferritin nanocages...
August 15, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28821432/effect-of-micro-strain-stress-on-proliferation-of-endothelial-progenitor-cells-in-vitro-by-the-mapk-erk1-2-signaling-pathway
#14
Bin Zhao, Zhihu Zhao, Xiaolei Sun, Yang Zhang, Yue Guo, Peng Tian, Jianxiong Ma, Xinlong Ma
BACKGROUND: The aim of this study was to analyze the effect of micro strain stress on the proliferation of endothelial progenitor cells in vitro by the MAPK-ERK1/2 signaling pathway. MATERIAL AND METHODS: In this study, we report the effect of micro strain stress on proliferation of endothelial progenitor cells (EPCs) in vitro by loading different types of micro strain stress on EPCs. We also explore the possible mechanisms of this phenomenon. RESULTS: The results of flow cytometry show that appropriate micro strain stress can promote EPC proliferation...
August 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28821329/cardiac-progenitor-cell-recruitment-drives-fetal-cardiac-regeneration-by-enhanced-angiogenesis
#15
Carlos Zgheib, Maggie M Hodges, Myron W Allukian, Junwang Xu, Kara L Spiller, Joseph H Gorman, Robert C Gorman, Kenneth W Liechty
BACKGROUND: In contrast to adults, the fetal response to myocardial infarction (MI) is regenerative, requiring the recruitment of cardiac progenitor cells to replace infarcted myocardium. Macrophage contribution to tissue repair depends on their phenotype: M1 are proinflammatory and initiate angiogenesis; M2a are profibrotic and contribute to blood vessels maturation; and M2c are proremodeling and proangiogenesis. The goal of the present study was to expand on this work by examining cardiac progenitor cells recruitment, and the role of macrophages in promoting angiogenesis and cardiac regeneration in the fetal heart after MI...
August 16, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28821262/pre-operative-serum-vcam-1-as-a-biomarker-of-atrial-fibrillation-after-coronary-artery-bypass-grafting
#16
Leanne Harling, Jonathan Lambert, Hutan Ashrafian, Ara Darzi, Nigel J Gooderham, Thanos Athanasiou
OBJECTIVE: Systemic inflammation is a recognised contributory factor in the pathogenesis of de novo post-operative atrial fibrillation after cardiac surgery. This study aims to determine whether serum soluble vascular endothelial cell adhesion molecule (sVCAM-1) may predict the onset of POAF in patients under going coronary artery bypass grafting. METHODS: 34 patients undergoing non-emergent, on-pump CABG were prospectively recruited. Plasma was obtained at 24 h pre-operatively and at 48 and 96 h post-operatively...
August 18, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28821253/evidence-based-anti-osteoporosis-effects-of-periplaneta-americana-l-on-osteoblasts-osteoclasts-vascular-endothelial-cells-and-bone-marrow-derived-mesenchymal-stem-cells
#17
Yan-Fen Huang, Long-Jian Li, Si-Qian Gao, Yang Chu, Jie Niu, Fu-Neng Geng, Yong-Mei Shen, Li-Hua Peng
BACKGROUND: Kangfuxin (KFX) is the ethanol extract of Periplaneta americana L, which has been widely used in the Traditional Chinese Medicine for the repair and regeneration of injured organ and tissues with long history. This study is to investigate the influence of KFX in the various cellular activities and evaluate the anti-osteoporosis potential of KFX. METHODS: The influence of the KFX in the cellular activities, including: 1) migration, osteocalcin secretion of osteoblasts; 2) apoptosis of osteoclasts; 3) migration and tube formation of human umbilical vein endothelial cell (HUVEC); and 4) proliferation, cell cycle regulation and migration of bone marrow mesenchymal stem cells (BMSCs), were investigated systematically...
August 18, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28821164/cape-gooseberry-physalis-peruviana-juice-as-a-modulator-agent-for-hepatocellular-carcinoma-linked-apoptosis-and-cell-cycle-arrest
#18
Hanaa A Hassan, Hanaa M Serag, Makwan S Qadir, Mohamed Fawzy Ramadan
BACKGROUND: Cape gooseberry (Physalis peruviana) fruit is highly nutritious with high content of health-promoting compounds including minerals, phenolic compounds, as well as vitamins A and C. Physalis peruviana fruits were used as mutagenic, antispasmodic, anticoagulant, and antileucemis agents. OBJECTIVE: The objective of the present work was to study the role of cape gooseberry juice (CG) as a natural modulator agent for adverse aspects associated with hepatocellular carcinoma (HCC)...
August 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28821104/modulation-of-binding-to-vascular-endothelial-growth-factor-and-receptor-by-heparin-derived-oligosaccharide
#19
Jie-Ru Liu, Hui-Fang Wang, Dan-Feng Yu, Xiao-Yu Chen, Shu-Ying He
We investigated the mechanism of heparin-derived oligosaccharide on the proliferation of vascular smooth muscle cell (VSMC) induced by vascular endothelial growth factor (VEGF). Expression levels of VEGFR 1 and VEGFR 2 were examined by RT-PCR, and the corresponding protein expression levels were detected by Western blotting and immunocytochemistry. Western blotting was taken to identify the expression levels of mechanism proteins. The binding of VEGF and VEGFR 2 was measured by co-IP. Besides, HS competition assay was to detect the ability of HDO to compete with Heparin for VEGF165...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820578/integrated-microfluidic-platform-with-multiple-functions-to-probe-the-tumor-endothelial-cell-interaction
#20
Ling Lin, Xuexia Lin, Luyao Lin, Qiang Feng, Takehiko Kitamori, Jin-Ming Lin, Jiashu Sun
Interaction between tumor and endothelial cells could affect tumor growth and progression, and induce drug resistance during cancer therapy. Investigation on tumor-endothelial cell interaction involves cell co-culture, protein detection, and analysis of drug metabolites, which are complicated and time-consuming. In this work, we present an integrated microfluidic device with three individual components (the cell co-culture component, the protein detection component, and the pre-treatment component for drug metabolites) to probe the interaction between tumor and endothelial cells...
August 18, 2017: Analytical Chemistry
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