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https://www.readbyqxmd.com/read/29679856/b7-h6-expression-is-induced-by-lipopolysaccharide-and-facilitates-cancer-invasion-and-metastasis-in-human-gliomas
#1
Fengyuan Che, Xiaoli Xie, Long Wang, Quanping Su, Feiyu Jia, Yufu Ye, Lanlan Zang, Jing Wang, Hongyan Li, Yanchun Quan, Cuiping You, Jiawei Yin, Zhiqiang Wang, Gen Li, Yifeng Du, Lijuan Wang
Although great progress has been made in treatment regimens, gliomas are still incurable and the 5-year survival remains poor. Studies focusing on molecules that regulate tumorigenesis or tumor immunity may provide potential therapeutic strategies for patients with glioma. B7-H6 is selectively expressed in tumor cells and plays vital roles in host immune responses. In this study, we demonstrated that B7-H6 was expressed in glioma cell lines, including CRT, U251, SHG-44, SF-295, TG-905 and U373, and tumor tissues isolated from glioma patients...
April 18, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29676587/a-potential-role-for-exosomal-tctp-export-in-vascular-remodeling-in-pulmonary-arterial-hypertension
#2
Elisabet Ferrer, Benjamin J Dunmore, Dhiya Hassan, Mark L Ormiston, Stephen Moore, John Deighton, Lu Long, Xu Dong Yang, Duncan J Stewart, Nicholas W Morrell
Pulmonary arterial hypertension (PAH) is characterized by increased proliferation and resistance to apoptosis of pulmonary vascular cells. Increased expression of translationally controlled tumor protein (TCTP), a pro-survival and anti-apoptotic mediator, has recently been demonstrated in patients with hereditary PAH (HPAH) although its role in the pathobiology of PAH remains unclear. Silencing of TCTP in blood outgrowth endothelial cells (BOECs) isolated from control subjects led to significant changes in morphology, cytoskeletal organization, increased apoptosis and decreased directionality during migration...
April 20, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29668114/-%C3%AE-2-adrenoceptors-inhibit-neutrophil-extracellular-traps-in-human-polymorphonuclear-leukocytes
#3
Franca Marino, Angela Scanzano, Laura Pulze, Monica Pinoli, Emanuela Rasini, Alessandra Luini, Raffaella Bombelli, Massimiliano Legnaro, Magda de Eguileor, Marco Cosentino
This study tests the hypothesis that in isolated human polymorphonuclear leukocytes (PMN) adrenergic ligands can affect neutrophil extracellular trap (NET) formation. We have previously shown that, in PMN, adrenaline (A), through the activation of adrenergic receptors (AR), reduces stimulus-dependent cell activation; we have, therefore, planned to investigate if AR are involved in NET production. PMN were obtained from venous blood of healthy subject. The ability of adrenergic ligands to affect reactive oxygen species (ROS) production, NET production, and cell migration was investigated in cells cultured under resting conditions or after activation with N-formyl-methionyl-leucyl-phenylalanine (fMLP), LPS, or IL-8...
April 18, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29668032/presence-of-meniscus-tear-alters-gene-expression-profile-of-anterior-cruciate-ligament-tears
#4
Robert H Brophy, Marcus A Rothermich, Eric D Tycksen, Lei Cai, Muhammad Farooq Rai
Anterior cruciate ligament (ACL) tears occur in isolation or in tandem with other intra-articular injuries such as meniscus tears. The impact of injury pattern on the molecular biology of the injured ACL is unknown. Here, we tested the hypothesis that the biological response of the ACL to injury varies based on the presence or absence of concomitant meniscus tear. We performed RNA-seq on 28 ACL tears remnants (12 isolated, 16 combined). In total, 16,654 transcripts were differentially-expressed between isolated and combined injury groups at false-discovery-rate of 0...
April 18, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29668018/how-strong-was-the-bottleneck-associated-to-the-peopling-of-the-americas-new-insights-from-multilocus-sequence-data
#5
Nelson J R Fagundes, Alice Tagliani-Ribeiro, Rohina Rubicz, Larissa Tarskaia, Michael H Crawford, Francisco M Salzano, Sandro L Bonatto
In spite of many genetic studies that contributed for a deep knowledge about the peopling of the Americas, no consensus has emerged about important parameters such as the effective size of the Native Americans founder population. Previous estimates based on genomic datasets may have been biased by the use of admixed individuals from Latino populations, while other recent studies using samples from Native American individuals relied on approximated analytical approaches. In this study we use resequencing data for nine independent regions in a set of Native American and Siberian individuals and a full-likelihood approach based on isolation-with-migration scenarios accounting for recent flow between Asian and Native American populations...
2018: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/29664206/pedf-vegf-ratio-plays-a-crucial-role-in-the-spontaneous-regression-of-infant-hemangioma-and-the-therapeutic-effect-of-propranolol
#6
Liuqing Zhu, Jinye Xie, Zhenyin Liu, Zhijian Huang, Mao Huang, Haofan Yin, Weiwei Qi, Zhonghan Yang, Ti Zhou, Guoquan Gao, Jing Zhang, Xia Yang
Infantile hemangioma (IH) is a benign tumor that is formed by aberrant angiogenesis and that undergoes spontaneous regression over time. Propranolol, the first-line therapy for IH, inhibits angiogenesis by downregulating the activation of the VEGF pathway, which is hyperactivated in IH. However, this treatment is reportedly ineffective for 10% of tumors, and 19% of patients relapse after propranolol treatment. Both pro-angiogenic and anti-angiogenic factors regulate angiogenesis, and PEDF is the most effective endogenous anti-angiogenic factor...
April 17, 2018: Cancer Science
https://www.readbyqxmd.com/read/29663813/amide-bond-formation-assisted-by-vicinal-alkylthio-migration-in-enaminones-metal-and-co-free-synthesis-of-%C3%AE-%C3%AE-unsaturated-amides
#7
Zhuqing Liu, Fei Huang, Ping Wu, Quannan Wang, Zhengkun Yu
Amide bond formation is one of the most important transformations in organic synthesis, drug development, and materials science. Efficient construction of amides has been among the most challenging tasks for organic chemists. Herein, we report a concise methodology for amide bond (-CONH-) formation assisted by vicinal group migration in alkylthio-functionalized enaminones (α-oxo ketene N,S-acetals)under mild conditions. Simple treatment of such enaminones with PhI(OAc)2 at ambient temperature in air afforded diverse multiply functionalized α,β-unsaturated amides including β-cyclopropylated acrylamides, in which a wide array of functional groups such as aryl, (hetero)aryl, alkenyl, and alkyl can be conveniently introduced to a ketene moiety...
April 17, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29662474/genotypic-and-lipid-analyses-of-strains-from-the-archaeal-genus-halorubrum-reveal-insights-into-their-taxonomy-divergence-and-population-structure
#8
Rafael R de la Haba, Paulina Corral, Cristina Sánchez-Porro, Carmen Infante-Domínguez, Andrea M Makkay, Mohammad A Amoozegar, Antonio Ventosa, R Thane Papke
To gain a better understanding of how divergence occurs, and how taxonomy can benefit from studying natural populations, we isolated and examined 25 closely related Halorubrum strains obtained from different hypersaline communities and compared them to validly named species and other reference strains using five taxonomic study approaches: phylogenetic analysis using the 16S rRNA gene and multilocus sequencing analysis (MLSA), polar lipid profiles (PLP), average nucleotide identity (ANI) and DNA-DNA hybridization (DDH)...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29660336/microrna-155-inversely-correlates-with-esophageal-cancer-progression-through-regulating-tumor-associated-macrophage-fgf2-expression
#9
Peng Wang, Li-Juan Xu, Jie-Jie Qin, Lu Zhang, Gui-Hua Zhuang
Esophageal cancer (EC) is one of the most common malignancies with high incidence and mortality. Tumor-associated macrophages (TAMs) in the tumor microenvironment have been linked to the accelerated tumor progression. MicroRNAs (miR) are 19-25 nucleotide-long, noncoding RNA molecules, functioning as modulators of gene expression, and mediate a variety of biological functions, including tumor growth. In the present study, the effects and molecular mechanism of miR-155 in TAMs isolated from EC were explored. The expression of miR-155 and fibroblast growth factor-2 (FGF2) in EC tissues and cell lines were analyzed using reverse transcription-quantitative PCR (qRT-PCR) and western blot assays...
April 13, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29660329/aquaporin-5-promotes-corneal-wound-healing
#10
S Sindhu Kumari, Murali Varadaraj, Anil G Menon, Kulandaiappan Varadaraj
Aquaporins (AQPs), ordinarily regarded as water channels, have recently been shown to participate in other cellular functions such as cell-to-cell adhesion, cell migration, cell proliferation etc. The current investigation was undertaken to find out whether AQP5 water channel plays a role in corneal epithelial wound healing. Expression of AQP5 in mouse cornea and transfected Madin Darby canine kidney (MDCK) cells was detected using immunofluorescence or EGFP tag. Cell migration and proliferation, the two major events in wound healing, were studied in vitro using cell culture scratch-wound healing model and cell proliferation assay, in vivo by conducting wound healing experiments on corneas of wild-type and AQP5 knockout mouse model and ex vivo on corneal epithelial cells isolated from wild type and AQP5 knockout mice...
April 13, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29658590/cucurbitacin-d-impedes-gastric-cancer-cell-survival-via-activation-of-the-inos-no-and-inhibition-of-the-akt-signalling-pathway
#11
Yan Zhen Zhang, Chun Feng Wang, Lian Feng Zhang
Cucurbitacin D (CuD), isolated from plants from the Cucurbitaceae family, is a potential antitumour agent since it inhibits proliferation, migration and metastasis of cancer cells. Despite CuD antitumour activity in cancer cells, the effects of CuD on gastric cancer cell lines remain unclear. The present study aimed to investigate the effects of CuD on gastric cancer cell growth and death. Human gastric cancer cell lines (AGS, SNU1 and Hs746T) were cultured and treated with different concentrations of CuD (0, 0...
April 10, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29655579/hungarian-tick-borne-encephalitis-viruses-isolated-from-a-0-5-ha-focus-are-closely-related-to-finnish-strains
#12
László Egyed, Zsuzsanna Rónai, Ádám Dán
Four tick-borne encephalitis virus strains were isolated from a small 0.5-ha focus over a six-year-long period (2011-2016) in Hungary. Two strains with identical genomes were isolated from Ixodes ricinus and Haemaphysalis concinna two months apart, which shows that the virus had not evolved separately in these tick species. Whole-genome sequencing of the virus revealed that the isolates differed from each other in 4 amino acids and 9 nucleotides. The calculated substitution rates indicated that the speed of genome evolution differs from habitat to habitat, and continuously changes even within the same focus...
April 7, 2018: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/29652604/an-engineered-human-adipose-collagen-model-for-in-vitro-breast-cancer-cell-migration-studies
#13
Robert David Hume, Lorraine Berry, Stefanie Reichelt, Michael D'Angelo, Jenny Gomm, Ruth Elizabeth Cameron, Christine Watson
Adipocytes are one of the major stromal cell components of the human breast. These cells play a key role in the development of the gland and are implicated in breast tumorigenesis. Frequently, directional stromal collagen I fibres are found surrounding aggressive breast tumours. These fibres enhance breast cancer cell migration and are associated with poor patient prognosis. We sought to recapitulate these stromal components in vitro to provide a 3D model comprising human adipose tissue and anisotropic collagen fibres...
March 8, 2018: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29650250/thermo-setting-glass-ionomer-cements-promote-variable-biological-responses-of-human-dental-pulp-stem-cells
#14
Mar Collado-González, Miguel R Pecci-Lloret, Christopher J Tomás-Catalá, David García-Bernal, Ricardo E Oñate-Sánchez, Carmen Llena, Leopoldo Forner, Vinicius Rosa, Francisco J Rodríguez-Lozano
OBJECTIVE: To evaluate the in vitro cytotoxicity of Equia Forte (GC, Tokyo, Japan) and Ionostar Molar (Voco, Cuxhaven, Germany) on human dental pulp stem cells (hDPSCs). METHODS: hDPSCs isolated from third molars were exposed to several dilutions of Equia Forte and Ionostar Molar eluates (1/1, 1/2 and 1/4). These eluates were obtained by storing material samples in respective cell culture medium for 24h (n=40). hDPSCs in basal growth culture medium were the control...
April 9, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29643807/antimicrobial-peptides-and-their-therapeutic-potential-for-bacterial-skin-infections-and-wounds
#15
REVIEW
Anja Pfalzgraff, Klaus Brandenburg, Günther Weindl
Alarming data about increasing resistance to conventional antibiotics are reported, while at the same time the development of new antibiotics is stagnating. Skin and soft tissue infections (SSTIs) are mainly caused by the so called ESKAPE pathogens ( Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa , and Enterobacter species) which belong to the most recalcitrant bacteria and are resistant to almost all common antibiotics. S. aureus and P. aeruginosa are the most frequent pathogens isolated from chronic wounds and increasing resistance to topical antibiotics has become a major issue...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29643041/-effect-of-outer-membrane-vesicles-derived-from-escherichia-coli-on-proliferation-apoptosis-and-migration-of-human-neuroblastoma-sk-n-sh-cells-in-vitro
#16
Bo Tang, Da-Wei He, Dian Li, Wen-Hao Guo, Dan Zhang, Guang-Hui Wei
OBJECTIVE: To investigate the effect of outer membrane vesicles derived from Escherichia coli on proliferation, apoptosis and migration of human neuroblastoma SK-N-SH cells in vitro. METHODS: The outer membrane vesicles (OMVs) were obtained from wild-type Escherichia coli with ultracentrifugation method, and the morphology of the OMVs was observed by transmission electron microscopy and the vesicle diameter was determined using MALVERN ZEN3690. Human neuroblastoma SK-N-SH cells were treated with the OMVs at low (100 µg/mL), moderate (500 µg/mL) and high (1000 µg/mL) doses, and 24, 48 and 72 h later, the cell proliferation activity was detected with MTT assay...
March 20, 2018: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/29623476/transcription-and-microrna-profiling-of-cultured-human-tympanic-membrane-epidermal-keratinocytes
#17
Peder Aabel, Tor Paaske Utheim, Ole Kristoffer Olstad, Helge Rask-Andersen, Rodney James Dilley, Magnus von Unge
The human tympanic membrane (TM) has a thin outer epidermal layer which plays an important role in TM homeostasis and ear health. The specialised cells of the TM epidermis have a different physiology compared to normal skin epidermal keratinocytes, displaying a dynamic and constitutive migration that maintains a clear TM surface and assists in regeneration. Here, we characterise and compare molecular phenotypes in keratinocyte cultures from TM and normal skin. TM keratinocytes were isolated by enzymatic digestion and cultured in vitro...
April 5, 2018: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/29622561/o-linked-%C3%AE-n-acetylglucosamine-modification-of-a20-enhances-the-inhibition-of-nf-%C3%AE%C2%BAb-nuclear-factor-%C3%AE%C2%BAb-activation-and-elicits-vascular-protection-after-acute-endoluminal-arterial-injury
#18
Dan Yao, Lijuan Xu, Oufan Xu, Rujun Li, Mingxing Chen, Hui Shen, Huajiang Zhu, Fengyi Zhang, Deshang Yao, Yiu-Fai Chen, Suzanne Oparil, Zhengang Zhang, Kaizheng Gong
OBJECTIVE: Recently, we have demonstrated that acute glucosamine-induced augmentation of protein O-linked β-N-acetylglucosamine (O-GlcNAc) levels inhibits inflammation in isolated vascular smooth muscle cells and neointimal formation in a rat model of carotid injury by interfering with NF-κB (nuclear factor-κB) signaling. However, the specific molecular target for O-GlcNAcylation that is responsible for glucosamine-induced vascular protection remains unclear. In this study, we test the hypothesis that increased A20 O-GlcNAcylation is required for glucosamine-mediated inhibition of inflammation and vascular protection...
April 5, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29622223/characterisation-of-%C3%AE-carotene-partitioning-in-protein-emulsions-effects-of-pre-treatments-solid-fat-content-and-emulsifier-type
#19
W A Fahmi Wan Mohamad, Donald McNaughton, Mary Ann Augustin, Roman Buckow
Understanding the bioactive partitioning between the phases of an emulsion system underpins strategies for improving the efficiency of bioactive protection against degradation. We analysed partitioning of β-carotene in emulsions with various formulations in-situ using confocal Raman microscopy (CRM). The partitioning of β-carotene into the aqueous phase of emulsions increased when whey protein isolate (WPI) was heat or high pressure-treated prior to emulsion formation. However, increasing the concentration of high pressure-treated WPI reduced the β-carotene partitioning into the aqueous phase...
August 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29620151/low%C3%A2-intensity-pulsed-ultrasound-promotes-periodontal-ligament-stem-cell-migration-through-twist1%C3%A2-mediated-sdf%C3%A2-1-expression
#20
Yunji Wang, Jie Li, Ye Qiu, Bo Hu, Jin Chen, Tiwei Fu, Pengfei Zhou, Jinlin Song
Low‑intensity pulsed ultrasound (LIPUS) is a non‑invasive therapeutic treatment for accelerating fracture healing. A previous study from our group demonstrated that LIPUS has the potential to promote periodontal tissue regeneration. However, the underlying molecular mechanism by which LIPUS promotes periodontal tissue regeneration remains unknown. In the present study, periodontal ligament stem cells (PDLSCs) were isolated from premolars. Flow cytometry and differentiation assays were used to characterize the isolated PDLSCs...
March 27, 2018: International Journal of Molecular Medicine
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