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https://www.readbyqxmd.com/read/29453444/positive-regulation-of-raphe-serotonin-neurons-by-serotonin-2b-receptors
#1
Arnauld Belmer, Emily Quentin, Silvina L Diaz, Bruno P Guiard, Sebastian P Fernandez, Stéphane Doly, Sophie M Banas, Pothitos M Pitychoutis, Imane Moutkine, Aude Muzerelle, Anna Tchenio, Anne Roumier, Manuel Mameli, Luc Maroteaux
Serotonin is a neurotransmitter involved in many psychiatric diseases. In humans, a lack of 5-HT 2B receptors is associated with serotonin-dependent phenotypes, including impulsivity and suicidality. A lack of 5-HT 2B receptors in mice eliminates the effects of molecules that directly target serotonergic neurons including amphetamine derivative serotonin releasers, and selective serotonin reuptake inhibitor antidepressants. In this work, we tested the hypothesis that 5-HT 2B receptors directly and positively regulate raphe serotonin neuron activity...
February 5, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29453401/endothelial-smoothened-dependent-hedgehog-signaling-is-not-required-for-sonic-hedgehog-induced-angiogenesis-or-ischemic-tissue-repair
#2
Rajesh Gupta, Alexander R Mackie, Sol Misener, Lijun Liu, Douglas W Losordo, Raj Kishore
Sonic Hedgehog (Shh) signaling induces neovascularization and angiogenesis. It is not known whether the hedgehog signaling pathway in endothelial cells is essential to angiogenesis. Smoothened (Smo) transduces hedgehog signaling across the cell membrane. This study assessed whether endothelial Smoothened-dependent Shh signaling is required for Shh-mediated angiogenesis and ischemic tissue repair. Endothelial-specific smoothened knockout mice, eSmo Null were created using Cre-lox recombination system. eSmo Null mice had no observable phenotype at baseline and showed normal cardiac function...
February 16, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29449332/inhibition-of-endothelial-notch1-signaling-attenuates-inflammation-by-reducing-cytokine-mediated-histone-acetylation-at-inflammatory-enhancers
#3
Lars la Cour Poulsen, Reidunn Jetne Edelmann, Stig Krüger, Rodrigo Diéguez-Hurtado, Akshay Shah, Tor Espen Stav-Noraas, Anastasia Renzi, Monika Szymanska, Junbai Wang, Manuel Ehling, Rui Benedito, Monika Kasprzycka, Espen Bækkevold, Olav Sundnes, Kim S Midwood, Helge Scott, Philippe Collas, Christian W Siebel, Ralf H Adams, Guttorm Haraldsen, Eirik Sundlisæter, Johanna Hol
OBJECTIVE: Endothelial upregulation of adhesion molecules serves to recruit leukocytes to inflammatory sites and appears to be promoted by NOTCH1; however, current models based on interactions between active NOTCH1 and NF-κB components cannot explain the transcriptional selectivity exerted by NOTCH1 in this context. APPROACH AND RESULTS: Observing that Cre/Lox-induced conditional mutations of endothelial Notch modulated inflammation in murine contact hypersensitivity, we found that IL (interleukin)-1β stimulation induced rapid recruitment of RELA to genomic sites occupied by NOTCH1-RBPJ and that NOTCH1 knockdown reduced H3K27 acetylation at a subset of NF-κB-directed inflammatory enhancers...
February 15, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29448251/expression-of-lectin-like-oxidized-low-density-lipoprotein-receptor-1-in-human-epicardial-and-intramyocardial-coronary-arteries-of-male-patients-undergoing-coronary-artery-bypass-grafting
#4
Andreas Synetos, Antonios Karanasos, Stauros Spyropoulos, Maria Gazouli, George Latsios, Konstantinos Toutouzas, Despina Perrea, Dimitrios Tousoulis, Ioannis A Chloroyiannis
OBJECTIVES: Atherosclerosis is almost absent in intramyocardial coronary arteries, while epicardial coronary arteries may show extensive occlusive disease. Lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) expression has been implicated in atherogenesis. We aimed to investigate differences in arterial wall LOX-1 expression between human epicardial and intramyocardial coronary arteries. METHODS: Epicardial and intramyocardial total artery wall specimens were obtained from 13 male patients (aged 61...
February 15, 2018: Cardiology
https://www.readbyqxmd.com/read/29446213/osteopontin-is-essential-for-il-1%C3%AE-production-and-apoptosis-in-peri-implantitis
#5
Chengye Che, Jie Liu, Jianjun Yang, Lei Ma, Na Bai, Qian Zhang
BACKGROUND AND PURPOSE: Peri-implantitis is caused by a cascade of host and microbial factors leading to an oral inflammatory disease. The inflammation proliferates into supporting tissues surrounding implants and may finally lead to a complete loss of osseointegration. Being a phosphorylated glycoprotein secreted by immunocompetent cells, osteopontin (OPN) is involved in the differentiation of odontoblast-like cells during pulpal healing following tooth transplantation and the secretion of type I collagen in reparative dentin...
February 15, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29438322/the-application-of-nhej-crispr-cas9-and-cre-lox-system-in-the-generation-of-bivalent-duck-enteritis-virus-vaccine-against-avian-influenza-virus
#6
Pengxiang Chang, Yongxiu Yao, Na Tang, Jean-Remy Sadeyen, Joshua Sealy, Anabel Clements, Sushant Bhat, Muhammad Munir, Juliet E Bryant, Munir Iqbal
Duck-targeted vaccines to protect against avian influenza are critically needed to aid in influenza disease control efforts in regions where ducks are endemic for highly pathogenic avian influenza (HPAI). Duck enteritis virus (DEV) is a promising candidate viral vector for development of vaccines targeting ducks, owing to its large genome and narrow host range. The clustered regularly interspaced palindromic repeats (CRISPR)/Cas9 system is a versatile gene-editing tool that has proven beneficial for gene modification and construction of recombinant DNA viral vectored vaccines...
February 13, 2018: Viruses
https://www.readbyqxmd.com/read/29434955/association-between-lysyl-oxidase-and-fibrotic-focus-in-relation-with-inflammation-in-breast-cancer
#7
Young Ju Jeong, Sung Hwan Park, Sung Hee Mun, Sang Gyu Kwak, Sun-Jae Lee, Hoon Kyu Oh
We hypothesized that lysyl oxidase (LOX) contributes to the formation of fibrotic focus (FF) in association with inflammation and serves a significant role in breast carcinogenesis. In the present study, the association between the expression of LOX family members and FF with regards to with inflammation was analyzed, and the prognostic significance of LOX and FF in breast cancer was investigated. Immunohistochemical staining for LOX, LOX-like protein (LOXL) 1, LOXL2 and LOXL3 was performed in primary breast cancer tissues...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29433512/coupling-the-recombineering-to-cre-lox-system-enables-simplified-large-scale-genome-deletion-in-lactobacillus-casei
#8
Yongping Xin, Tingting Guo, Yingli Mu, Jian Kong
BACKGROUND: Lactobacillus casei is widely used in the dairy and pharmaceutical industries and a promising candidate for use as cell factories. Recently, genome sequencing and functional genomics provide the possibility for reducing L. casei genome. However, it was still limited by the inefficient and laborious genome deletion methods. RESULTS: Here, we proposed a genome minimization strategy based on LCABL_13040-50-60 recombineering and Cre-lox site-specific recombination system in L...
February 12, 2018: Microbial Cell Factories
https://www.readbyqxmd.com/read/29431515/different-expression-profiles-of-the-lysyl-oxidases-and-matrix-metalloproteinases-in-human-acl-fibroblasts-after-co-culture-with-synovial-cells
#9
Chunli Wang, Chunming Xu, Rongfu Chen, Li Yang, Kl Paul Sung
Purposes The anterior cruciate ligament (ACL) has poor functional healing response. The synovial tissue surrounding ACL ligament might be a major regulator of the microenvironment in the joint cavity after ACL injury, thus affecting the repair process. Using transwell co-culture, this study explored the direct influence of human synovial cells (HSCs) on ACL fibroblasts (ACLfs) by characterizing the differential expression of the lysyl oxidase family (LOXs) and matrix metalloproteinases (MMP-1, -2, -3), which facilitate extracellular matrix (ECM) repair and degradation, respectively...
February 12, 2018: Connective Tissue Research
https://www.readbyqxmd.com/read/29429760/switch-and-trace-recombinase-genetics-in-zebrafish
#10
REVIEW
Tom J Carney, Christian Mosimann
Transgenic approaches are instrumental for labeling and manipulating cells and cellular machineries in vivo. Transgenes have traditionally been static entities that remained unaltered following genome integration, limiting their versatility. The development of DNA recombinase-based methods to modify, excise, or rearrange transgene cassettes has introduced versatile control of transgene activity and function. In particular, recombinase-controlled transgenes enable regulation of exogenous gene expression, conditional mutagenesis, and genetic lineage tracing...
February 8, 2018: Trends in Genetics: TIG
https://www.readbyqxmd.com/read/29427675/relevance-of-non-synonymous-thymidine-kinase-mutations-for-antiviral-resistance-of-recombinant-herpes-simplex-virus-type-2-strains
#11
Anne-Kathrin Brunnemann, Anja Hoffmann, Stefanie Deinhardt-Emmer, Claus-Henning Nagel, Ruben Rose, Helmut Fickenscher, Andreas Sauerbrei, Andi Krumbholz
Therapy or prophylaxis of herpes simplex virus type 2 (HSV-2) infections with the nucleoside analog aciclovir (ACV) can lead to the emergence of drug-resistant HSV-2 strains, particularly in immunocompromised patients. In this context, multiple amino acid (aa) changes can accumulate in the ACV-converting viral thymidine kinase (TK) which hampers sequence-based diagnostics significantly. In this study, the so far unknown or still doubted relevance of several individual aa changes for drug resistance in HSV-2 was clarified...
February 7, 2018: Antiviral Research
https://www.readbyqxmd.com/read/29421656/inhibition-of-5-lipoxygenase-represses-neutrophils-activation-and-activates-apoptosis-in-pancreatic-tissues-during-acute-necrotizing-pancreatitis
#12
Dan Liao, Bo Qian, Yefei Zhang, Kai Wu, Min Xu
Pancreatic glandular necrosis is rapid inflammation of the pancreas and contributes to severe acute pancreatitis in humans. The pathogenesis of pancreatic tissue inflammation during acute pancreatitis is still largely unknown. Recent studies suggest that 5-lipoxygenase (5-LOX) is an essential mediator in modulating cell death pathways in human diseases. In this study, we aimed to evaluate the effects of a 5-LOX inhibitor, zileuton, on tissue apoptosis and neutrophils activation in pancreatic tissues during acute necrotizing pancreatitis (ANP) in a rat model...
February 5, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29419646/lysyl-oxidases-functions-and-disorders
#13
Fernando Rodriguez-Pascual, Tamara Rosell-Garcia
Lysyl oxidases (LOX) are copper-dependent enzymes that oxidize lysyl and hydroxylysyl residues in collagen and elastin, as a first step in the stabilization of these extracellular matrix (ECM) proteins through the formation of covalent cross-linkages, an essential process for connective tissue maturation. Five different LOX enzymes have been identified in mammals, LOX and LOX-like (LOXL) 1 to 4, being genetically different protein products with a high degree of homology in the catalytic carboxy terminal end and a more variable amino terminal pro-region...
February 6, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29407907/silver-complex-of-salicylic-acid-and-its-hydrogel-cream-in-wound-healing-chemotherapy
#14
Maria-Eleni K Stathopoulou, Christina N Banti, Nikolaos Kourkoumelis, Antonios G Hatzidimitriou, Angelos G Kalampounias, Sotiris K Hadjikakou
The known metallotherapeutic [Ag(salH)]2 (AGSAL-1) of salicylic acid (salH2), was used for the development of new efficient silver based material for wounds healing. AGSAL-1 was characterized by spectroscopic techniques and X-ray crystallography. The wound healing epithelialization of AGSAL-1 was investigated by the means of scratch assay against immortalized human keratinocytes (HaCaT) cells. The anti-inflammatory activity of AGSAL-1 was evaluated by monitoring the catalytic peroxidation of linoleic acid to hydroperoxylinoleic acid by the enzyme lipoxygenase (LOX)...
February 1, 2018: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29407891/fluid-shear-stress-regulates-the-expression-of-lectin-like-oxidized-low-density-lipoprotein-receptor-1-via-klf2-ap-1-pathway-depending-on-its-intensity-and-pattern-in-endothelial-cells
#15
Ji Yoon Lee, Jihwa Chung, Kyoung Hwa Kim, Shung Hyun An, Minsuk Kim, Junbeom Park, Kihwan Kwon
BACKGROUND AND AIMS: Vascular endothelial cells (ECs) are exposed to fluid shear stress (FSS), which modulates vascular pathophysiology. Lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) is crucial in endothelial dysfunction and atherosclerosis. We elucidated the mechanism regulating LOX-1 expression in ECs by FSS. METHODS: Human umbilical vein endothelial cells were exposed to laminar shear stress (LSS) of indicated intensities using a unidirectional steady flow, or to oscillatory shear stress (OSS) using a bidirectional disturbed flow...
January 31, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29400411/design-synthesis-and-biological-evaluation-of-novel-1-2-diaryl-4-substituted-benzylidene-5-4h-imidazolone-derivatives-as-cytotoxic-agents-and-cox-2-lox-inhibitors
#16
Phoebe F Lamie, John N Philoppes, Lucie Rárová
A new series of 1,2-diaryl-4-substituted-benzylidene-5(4H)-imidazolone derivatives 4a-l was synthesized. Their structures were confirmed by different spectroscopic techniques (IR, 1 H NMR, DEPT-Q NMR, and mass spectroscopy) and elemental analyses. Their cytotoxic activities in vitro were evaluated against breast, ovarian, and liver cancer cell lines and also normal human skin fibroblasts. Cyclooxygenase (COX)-1, COX-2 and lipoxygenase (LOX) inhibitory activities were measured. The synthesized compounds showed selectivity toward COX-2 rather than COX-1, and the IC50 values (0...
February 5, 2018: Archiv der Pharmazie
https://www.readbyqxmd.com/read/29398679/azelnidipine-inhibits-the-differentiation-and-activation-of-thp-1-macrophages-through-the-l-type-calcium-channel
#17
Hiroshi Komoda, Aya Shiraki, Jun-Ichi Oyama, Toshiyuki Nishikido, Koichi Node
AIM: Recently, calcium channel blockers (CCBs) have been reported to reduce atherosclerosis with anti-inflammatory or antiatherosclerotic effects in vivo. It is well established that monocytes and macrophages play important roles in promoting atherosclerosis. However, the effects of CCBs on macrophage activation remain unclear. The aim of this study was to evaluate the effects of azelnidipine, a dihydropyridine L-type CCB, on the activation of macrophages and to clarify the mechanisms of the effects of CCBs on atherosclerosis...
February 3, 2018: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/29393489/lysyl-oxidase-inhibition-via-%C3%AE-aminoproprionitrile-hampers-human-umbilical-vein-endothelial-cell-angiogenesis-and-migration-in%C3%A2-vitro
#18
Lin Shi, Ning Zhang, Hetao Liu, Lei Zhao, Jing Liu, Juan Wan, Wenyi Wu, Hetian Lei, Rongqing Liu, Mei Han
Lysyl oxidase (LOX) is an enzyme that oxidizes lysine residues in collagens and elastin. It stabilizes or remodels the extracellular matrix and basement membrane of blood vessels. Current oncology studies have revealed that LOX is upregulated in invasive cancer cells and bolstered cell movement, and LOX was observed to promote the angiogenesis and migration of endothelial cells. In the present study, angiogenesis and migration were examined in human umbilical vein endothelial cells (HUVECs). Following cell treatment with 0...
January 26, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29393358/microrna-let-7g-inhibits-angiotensin-ii-induced-endothelial-senescence-via-the-lox-1-independent-mechanism
#19
Po-Yuan Hsu, Wen-Yi Lin, Ruey-Tay Lin, Suh-Hang H Juo
Endothelial senescence leads to cell dysfunction, which in turn eventually results in cardiovascular disease. Identifying factors that regulate endothelial senescence may provide insight into the pathogenesis of aging. Insulin-like growth factor (IGF) signaling has a significant role in the physiology of endothelial cells (ECs). Overactivation of IGF signaling has been implicated in promoting the aging process. Lectin‑like oxidized low‑density lipoprotein (oxLDL) receptor‑1 (LOX‑1) is a scavenger receptor that mediates the internalization of oxLDL into cells...
January 23, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29392386/mu-driven-transposition-of-recombinant-mini-mu-unit-dna-in-the-corynebacterium-glutamicum-chromosome
#20
Natalya V Gorshkova, Juliya S Lobanova, Irina L Tokmakova, Sergey V Smirnov, Valerii Z Akhverdyan, Alexander A Krylov, Sergey V Mashko
A dual-component Mu-transposition system was modified for the integration/amplification of genes in Corynebacterium. The system consists of two types of plasmids: (i) a non-replicative integrative plasmid that contains the transposing mini-Mu(LR) unit bracketed by the L/R Mu ends or the mini-Mu(LER) unit, which additionally contains the enhancer element, E, and (ii) an integration helper plasmid that expresses the transposition factor genes for MuA and MuB. Efficient transposition in the C. glutamicum chromosome (≈ 2 × 10-4 per cell) occurred mainly through the replicative pathway via cointegrate formation followed by possible resolution...
February 1, 2018: Applied Microbiology and Biotechnology
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