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https://www.readbyqxmd.com/read/28110427/evaluation-of-inos-icam-1-and-vcam-1-gene-expression-a-study-of-adult-t-cell-leukemia-malignancy-associated-with-htlv-1
#1
Mahdokht Jafarian, Sayed-Hamidreza Mozhgani, Elham Patrad, Hamidreza Vaziri, Seyed Abdolrahim Rezaee, Mohammad Mehdi Aakbarin, Mehdi Norouzi
The main aim of this study was to evaluate the expression of intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), and inducible nitric oxide synthase (iNOS) as host factors, and proviral load as the viral parameter, in adult T-cell leukemia/lymphoma (ATLL) individuals and healthy carrier (HC(s)) groups. Peripheral blood mononuclear cells (PBMC) from ATLL patients (n = 17) and HC subjects (as the control group, n = 17) were evaluated using real-time PCR to determine the levels of HTLV-1 proviral load and mRNA expression of ICAM, VCAM-1, and iNOS...
January 21, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28110102/transcriptional-profiling-reveals-protective-mechanisms-in-brains-of-long-lived-mice
#2
Christiane Frahm, Akash Srivastava, Silvio Schmidt, Jule Mueller, Marco Groth, Madlen Guenther, Yuanyuan Ji, Steffen Priebe, Matthias Platzer, Otto W Witte
The brain plays a central role in organismal aging but is itself most sensitive to aging-related functional impairments and pathologies. Insights into processes underlying brain aging are the basis to positively impact brain health. Using high-throughput RNA sequencing and quantitative polymerase chain reaction (PCR), we monitored cerebral gene expression in mice throughout their whole lifespan (2, 9, 15, 24, and 30 months). Differentially expressed genes were clustered in 6 characteristic temporal expression profiles, 3 of which revealed a distinct change between 24 and 30 months, the period when most mice die...
December 27, 2016: Neurobiology of Aging
https://www.readbyqxmd.com/read/28110073/sphingosine-1-phosphate-improves-endothelialization-with-reduction-of-thrombosis-in-recellularized-human-umbilical-vein-graft-by-inhibiting-syndecan-1-shedding-in-vitro
#3
Kai Hsia, Ming-Jie Yang, Wei-Min Chen, Chao-Ling Yao, Chih-Hsun Lin, Che-Chuan Loong, Yi-Long Huang, Ya-Ting Lin, Arthur D Lander, Hsinyu Lee, Jen-Her Lu
: Sphingosine-1-phosphate (S1P) has been known to promote endothelial cell (EC) proliferation and protect Syndecan-1 (SDC1) from shedding, thereby maintaining this antithrombotic signal. In the present study, we investigated the effect of S1P in the construction of a functional tissue-engineered blood vessel by using human endothelial cells and decellularized human umbilical vein (DHUV) scaffolds. Both human umbilical vein endothelial cells (HUVEC) and human cord blood derived endothelial progenitor cells (EPC) were seeded onto the scaffold with or without the S1P treatment...
January 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28110072/structuring-of-composite-hydrogel-bioadhesives-and-its-effect-on-properties-and-bonding-mechanism
#4
Oded Pinkas, Daniella Goder, Roni Noyvirt, Sivan Peleg, Maayan Kahlon, Meital Zilberman
: Bioadhesives are polymeric hydrogels that can adhere to a tissue after crosslinking and are an essential element in nearly all surgeries worldwide. Several bioadhesives are commercially available. However, none of them are ideal. The main limitation of current tissue adhesives is the tradeoff between biocompatibility and mechanical strength, especially in wet hemorrhagic environments. Our novel bioadhesives are based on the natural polymers gelatin (coldwater fish) and alginate, crosslinked by carbodiimide (EDC)...
January 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28110068/a-photoresponsive-soft-interface-reversibly-controls-wettability-and-cell-adhesion-by-conformational-changes-in-a-spiropyran-conjugated-amphiphilic-block-copolymer
#5
Di He, Yoshinori Arisaka, Kenichi Masuda, Mitsuya Yamamoto, Naoya Takeda
: The functionalities of soft interfaces including cell adhesion can be enhanced by dynamic conversion of polymer properties and movement via external stimuli. Light is a superior stimulus, and various surfaces modified with photoreactive molecules have been prepared. However, in most of these studies, the surface properties are irreversibly changed due to photo-degradation, and reversible adhesion and collection of cells is not feasible. In this study, we developed a photoresponsive polymer soft interface that was able to spatiotemporally control wettability, cell adhesion, and detachment in a reversible manner...
January 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28110067/poly-glycerol-sebacate-elastomer-supports-bone-regeneration-by-its-mechanical-properties-being-closer-to-osteoid-tissue-rather-than-to-mature-bone
#6
S H Zaky, K W Lee, J Gao, A Jensen, K Verdelis, Y Wang, A J Almarza, C Sfeir
: Mechanical load influences bone structure and mass. Arguing the importance of load-transduction, we investigated the mechanisms inducing bone formation using an elastomeric substrate. We characterized Poly (glycerol sebacate) (PGS) in-vitro for its mechanical properties, compatibility with osteoprogenitor cells regarding adhesion, proliferation, differentiation under compression versus static cultures and in-vivo for the regeneration of a rabbit ulna critical size defect. The load-transducing properties of PGS were compared in-vitro to a stiffer poly lactic-co- glycolic-acid (PLA/PGA) scaffold of similar porosity and interconnectivity...
January 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28109944/synthesis-biological-evaluation-and-molecular-dynamics-md-simulation-studies-of-three-novel-f-18-labeled-and-focal-adhesion-kinase-fak-targeted-5-bromo-pyrimidines-as-radiotracers-for-tumor
#7
Yu Fang, Dawei Wang, Xingyu Xu, Jianping Liu, Aiqin Wu, Xiang Li, Qianqian Xue, Huan Wang, Hang Wang, Huabei Zhang
Focal adhesion kinase (FAK) is considered as an attractive target for oncology. A series of F-18 labeled 5-bromo-N(2)-(4-(2-fluoro-pegylated (FPEG))-3,5-dimethoxyphenyl)-N(4)-(4-methoxyphenyl)pyrimidine-2,4-diamine derivatives were prepared and evaluated as the FAK targeted radiotracers for the early diagnoses of tumor. For the study of the FAK targeted drug molecules, this was the first attempt to develop the tumor diagnostic imaging agents on the radiopharmaceutical level. They inhibited the activity of FAK with IC50 in the range of 91...
January 11, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28109865/a-survey-of-membrane-receptor-regulation-in-valvular-interstitial-cells-cultured-under-mechanical-stresses
#8
Mir S Ali, Xinmei Wang, Carla M R Lacerda
Degenerative valvular diseases have been linked to the action of abnormal forces on valve tissues during each cardiac cycle. It is now accepted that the degenerative behavior of valvular cells can be induced mechanically in vitro. This approach of in vitro modeling of valvular cells in culture constitutes a powerful tool to study, characterize, and develop predictors of heart valve degeneration in vivo. Using such in vitro systems, we expect to determine the exact signaling mechanisms that trigger and mediate propagation of degenerative signals...
January 18, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28109817/salecan-protected-against-concanavalin-a-induced-acute-liver-injury-by-modulating-t-cell-immune-responses-and-nmr-based-metabolic-profiles
#9
Qi Sun, Xi Xu, Xiao Yang, Dan Weng, Junsong Wang, Jianfa Zhang
Salecan, a water-soluble extracellular β-glucan produced by Agrobacterium sp. ZX09, has been reported to exhibit a wide range of biological effects. The aims of the present study were to investigate the protective effect of salecan against Concanavalin A (ConA)-induced hepatitis, a well-established animal model of immune-mediated liver injury, and to search for possible mechanisms. C57BL/6 mice were pretreated with salecan followed by ConA injection. Salecan treatment significantly reduced ConA-induced acute liver injury, and suppressed the expression and secretion of inflammatory cytokines including interferon (IFN)-γ, interleukin (IL)-6 and IL-1β in ConA-induced liver injury model...
January 18, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28109813/amyloid-like-aggregates-formation-by-blood-plasma-fibronectin
#10
Rümeyza Bascetin, Khadija Admane, Rémy Agniel, Thomas Boudou, Tristan Doussineau, Rodolphe Antoine, Olivier Gallet, Johanne Leroy-Dudal, Charlotte Vendrely
Fibronectin (FN) is a multifunctional glycoprotein of the extracellular matrix (ECM) playing critical roles in physiological and pathological cell processes like adhesion, migration, growth, and differentiation. These various functions of FN are modulated by its supramolecular state. Indeed, FN can polymerize into different types of assemblies like fibrils and aggregates. However, the mechanism of polymerization and the effects of such assemblies on cell behaviors still remain to be elucidated. Here we show that upon irreversible thermal denaturation, human blood plasma fibronectin forms high molecular weight aggregates...
January 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28109308/semaphorin-7a-as-a-potential-immune-regulator-and-promising-therapeutic-target-in-rheumatoid-arthritis
#11
Jianmin Xie, Hao Wang
BACKGROUND: Semaphorin 7A (Sema7A) is expressed by several different classes of lymphoid and myeloid cells and is a potent immunomodulator. We examined the role of Sema7A in modulating cellular immune responses and to provide experimental data validating the therapeutic potential of Sema7A in rheumatoid arthritis (RA). METHODS: Soluble Sema7A (sSema7A) levels in the serum and synovial fluid from patients with RA or osteoarthritis, as well as cytokine secretions, were analyzed with an enzyme-linked immunosorbent assay...
January 21, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28109307/novel-roles-of-dc-signr-in-colon-cancer-cell-adhesion-migration-invasion-and-liver-metastasis
#12
Heya Na, Xiaoli Liu, Xiaomeng Li, Xinsheng Zhang, Yu Wang, Zhaohui Wang, Menglang Yuan, Yu Zhang, Shuangyi Ren, Yunfei Zuo
BACKGROUND: Tumor metastasis is an essential cause of the poor prognosis of colon cancer. DC-SIGNR is a C-type lectin that is frequently found on human liver sinusoidal endothelial cells. LSECtin, which is a homologue of DC-SIGNR, has been demonstrated to participate in colon cancer liver metastasis. Due to the similarities in the expression pattern and structure of the two proteins, we speculated that DC-SIGNR could also be involved in this process. METHODS: Colon cancer cells were treated with the DC-SIGNR protein or control IgG, after which cell migration, invasion, and morphology were assayed...
January 21, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28109289/plantamajoside-from-plantago-asiatica-modulates-human-umbilical-vein-endothelial-cell-dysfunction-by-glyceraldehyde-induced-ages-via-mapk-nf-%C3%AE%C2%BAb
#13
Won-Rak Son, Mi-Hyun Nam, Chung-Oui Hong, Yoonsook Kim, Kwang-Won Lee
BACKGROUND: Plantago asiatica has been traditionally used for traditional medicine around East Asia. Plantamajoside (PM), which is isolated from this plant, is known for biological properties including anti-inflammation and antioxidant activity. To demonstrate the biological activity of PM against endothelial dysfunction induced by advanced glycation end-products (AGEs), a cellular inflammatory mechanism system was evaluated in human umbilical vein endothelial cells (HUVECs). METHODS: We obtained PM through previous research in our laboratory...
January 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28108973/development-and-evaluation-of-buccal-films-based-on-chitosan-for-the-potential-treatment-of-oral-candidiasis
#14
G Tejada, M G Barrera, G N Piccirilli, M Sortino, A Frattini, C J Salomón, María C Lamas, Darío Leonardi
In this work, chitosan films were prepared by a casting/solvent evaporation methodology using pectin or hydroxypropylmethyl cellulose to form polymeric matrices. Miconazole nitrate, as a model drug, was loaded into such formulations. These polymeric films were characterized in terms of mechanical properties, adhesiveness, and swelling as well as drug release. Besides, the morphology of raw materials and films was investigated by scanning electron microscopy; interactions between polymers were analyzed by infrared spectroscopy and drug crystallinity studied by differential scanning calorimetry and X-ray diffraction...
January 20, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28108961/effects-of-negatively-and-positively-charged-ti-metal-surfaces-on-ceramic-coating-adhesion-and-cell-response
#15
Rodney Marcelo do Nascimento, Vanessa Rafaela de Carvalho, José Silvio Govone, Antônio Carlos Hernandes, Nilson Cristino da Cruz
This manuscript reports an evaluation of the effects of simple chemical-heat treatments on the deposition of different ceramic coatings, i.e., TiO2, CaTiO3 and CaP, on commercially pure titanium (cp-Ti) and Ti6Al4V and the influence of the coatings on cells interaction with the surfaces. The ceramic materials were prepared by the sol-gel method and the coating adhesion was analyzed by pull-off bending tests. The wettability of positively or negatively charged surfaces was characterized by contact angle measurements, which also enabled the calculation of the surface free energy through the polar-apolar liquids approach...
February 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28108847/airway-mucus-inflammation-and-remodeling-emerging-links-in-the-pathogenesis-of-chronic-lung-diseases
#16
REVIEW
Zhe Zhou-Suckow, Julia Duerr, Matthias Hagner, Raman Agrawal, Marcus A Mall
Airway mucus obstruction is a hallmark of many chronic lung diseases including rare genetic disorders such as cystic fibrosis (CF) and primary ciliary dyskinesia, as well as common lung diseases such as asthma and chronic obstructive pulmonary disease (COPD), which have emerged as a leading cause of morbidity and mortality worldwide. However, the role of excess airway mucus in the in vivo pathogenesis of these diseases remains poorly understood. The generation of mice with airway-specific overexpression of epithelial Na(+) channels (ENaC), exhibiting airway surface dehydration (mucus hyperconcentration), impaired mucociliary clearance (MCC) and mucus plugging, led to a model of muco-obstructive lung disease that shares key features of CF and COPD...
January 20, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28108801/phosphorylation-implications-in-cancer
#17
REVIEW
Vishakha Singh, Mahendra Ram, Rajesh Kumar, Raju Prasad, Birendra Kumar Roy, Kaushal Kumar Singh
Post translational modifications (PTMs) are involved in variety of cellular activities and phosphorylation is one of the most extensively studied PTM, which regulates a number of cellular functions like cell growth, differentiation, apoptosis and cell signaling in healthy condition. However, alterations in phosphorylation pathways result in serious outcomes in the form of diseases, especially cancer. Many signalling pathways including Tyrosine kinase, MAP kinase, Cadherin-catenin complex, Cyclin-dependent kinase etc...
January 20, 2017: Protein Journal
https://www.readbyqxmd.com/read/28108751/-compatibility-and-allergies-of-osteosynthesis-materials
#18
M Thomsen, P Thomas
Metal implants for osteosynthesis are nowadays standard in orthopedic and trauma surgery. Steel implants, especially cerclages, bands and wires, can show more corrosion due to friction and lead to encapsulation in connective tissue with fluid borders even without loosening. Corrosion and fluid borders are potentially more susceptible to incompatibility and infections. Titanium implants have the advantage of better allergic compatibility. Problems may occur in material removal, especially with titanium implants because material fractures occur more frequently...
January 20, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28108732/fak-regulates-e-cadherin-expression-via-p-srcy416-p-erk1-2-p-stat3y705-and-ppar%C3%AE-mir-125b-stat3-signaling-pathway-in-b16f10-melanoma-cells
#19
Guoshun Pei, Yan Lan, Dianhua Chen, Lina Ji, Zi-Chun Hua
Focal adhesion kinase (FAK) is involved in tumor cell migration and metastasis. However, the underlying mechanism remains unclear. Here, we present a signaling pathway involved in the regulation of melanoma cell migration by FAK. We found that the interference of FAK expression suppressed B16F10 cell migration/metastasis, and altered the expressions of genes involved in melanoma migration/metastasis. The down-regulation of FAK inhibited the expression of p-SrcY416, p-ERK1/2, Stat3 and p-Stat3Y705, while promoted the expression of PPARγ, miR-125b and E-cadherin...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28108607/insulin-like-growth-factor-binding-protein-1-could-improve-glucose-regulation-and-insulin-sensitivity-through-its-rgd-domain
#20
Natalie J Haywood, Paul A Cordell, Kar Yeun Tang, Natallia Makova, Nadira Y Yuldasheva, Helen Imrie, Hema Viswambharan, Alexander F Bruns, Richard M Cubbon, Mark T Kearney, Stephen B Wheatcroft
Low circulating levels of insulin-like growth factor binding protein 1 (IGFBP-1) are associated with insulin resistance and predict the development of type 2 diabetes. IGFBP-1 can affect cellular functions independently of IGF binding through an Arg-Gly-Asp (RGD) integrin-binding motif. Whether causal mechanisms underlie the favorable association of high IGFBP-1 levels with insulin sensitivity and whether these could be exploited therapeutically remain unexplored. We used recombinant IGFBP-1 and a synthetic RGD-containing hexapeptide in complementary in vitro signaling assays and in vivo metabolic profiling in obese mice to investigate the effects of IGFBP-1 and its RGD domain on insulin sensitivity, insulin secretion, and whole-body glucose regulation...
February 2017: Diabetes
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