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https://www.readbyqxmd.com/read/28212354/the-effect-of-dexmedetomidine-on-oxidative-stress-response-following-cerebral-ischemia-reperfusion-in-rats-and-the-expression-of-intracellular-adhesion-molecule-1-icam-1-and-s100b
#1
Yanwen Li, Shikun Liu
BACKGROUND Ischemia-reperfusion injury of whole brain involves a complicated pathophysiology mechanism. Dexmedetomidine (Dex) has been shown to have neuro protective functions. This study observed the effect of Dex on serum S100B and cerebral intracellular adhesion molecule-1 (ICAM-1) in a rat model of cerebral ischemia-reperfusion. MATERIAL AND METHODS Healthy Sprague Dawley (SD) rats (males, 7 weeks old) were randomly divided into sham, model, and Dex groups (n=20 each). A cerebral ischemia-reperfusion model was prepared by clipping of the bilateral common carotid artery combined with hypotension...
February 17, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28193640/grk2-mediates-arginine-vasopressin-induced-il-6-production-via-nf-kb-signaling-in-neonatal-rat-cardiac-fibroblast
#2
Feifei Xu, Suzhen Sun, Xiaojun Wang, Eran Ni, Lingling Zhao, Weizhong Zhu
: Elevated interleukin 6(IL-6) levels in congestive heart failure are associated with myocardial damage during acute exacerbation and with chronic inflammation. Arginine vasopressin (AVP), a hormone released in response to cardiac stress, could be a factor of inflammation and fibrosis in the pathogenesis of heart failure. Recently, we have shown that AVP promotes the proliferation of neonatal rat cardiac fibroblasts (NRCFs) through a V1Avasopressin receptor-mediated G protein-coupled receptor kinase2 (GRK2) signaling...
February 13, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28188410/simvastatin-inhibits-il-1%C3%AE-induced-apoptosis-and-extracellular-matrix-degradation-by-suppressing-the-nf-kb-and-mapk-pathways-in-nucleus-pulposus-cells
#3
Tu Ji, Li Wentian, Zhang Yukun, Wu Xinghuo, Song Yu, Kang Liang, Liu Wei, Wang Kun, Li Shuai, Hua Wenbin, Yang Cao
Statins are widely used hypocholesterolemic drugs that block the mevalonate pathway. Some studies have shown that statins may have the potential to inhibit intervertebral disk (IVD) degeneration (IDD). Interleukin (IL)-1β, a catabolic cytokine, is a key regulator of IDD. This study aimed to investigate the mechanism underlying the effect of simvastatin on IDD. The viability of nucleus pulposus (NP) cells was determined by the methyl-thiazolyl-tetrazolium (MTT) assay. The apoptosis of NP cells was measured by flow cytometric analysis, terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL), and western blotting of relevant apoptotic proteins...
February 10, 2017: Inflammation
https://www.readbyqxmd.com/read/28186459/bioactivity-of-carotenoids-chasms-of-knowledge
#4
Torsten Bohn
Carotenoid dietary intake, especially within fruits/vegetables and their plasma levels have been associated in many epidemiological studies with a reduced risk of several chronic diseases, including type-2 diabetes, cardiovascular diseases, several types of cancer, and agerelated macular degeneration. However, intervention trials with isolated carotenoids (as supplements) have fallen short of fulfi lling the hopes that were placed in these lipophilic pigments, often producing no positive or even adverse effects, such as increased lung cancer rate or total mortality...
February 10, 2017: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/28177524/in-vivo-expression-of-nurr1-nr4a2a-in-developing-retinal-amacrine-subtypes-in-zebrafish-tg-nr4a2a-egfp-transgenics
#5
Liana Goodings, Jie He, Alasdair Wood, William A Harris, Peter D Currie, Patricia R Jusuf
The Nuclear receptor subfamily 4 group A member 2 (Nr4a2) is crucial for the formation or maintenance of dopaminergic neurons in the central nervous system including the retina, where dopaminergic amacrine cells contribute to visual function. Little is known about which cells express Nr4a2 at which developmental stage. Furthermore, whether Nr4a2 functions in combination with other genes is poorly understood. Thus, we generated a novel transgenic to visualise Nr4a2 expression in vivo during zebrafish retinogenesis...
February 8, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28173812/anthocyanins-encapsulated-by-plga-peg-nanoparticles-potentially-improved-its-free-radical-scavenging-capabilities-via-p38-jnk-pathway-against-a%C3%AE-1-42-induced-oxidative-stress
#6
Faiz Ul Amin, Shahid Ali Shah, Haroon Badshah, Mehtab Khan, Myeong Ok Kim
BACKGROUND: In order to increase the bioavailability of hydrophilic unstable drugs like anthocyanins, we employed a polymer-based nanoparticles approach due to its unique properties such as high stability, improved bioavailability and high water-soluble drug loading efficiency. Anthocyanins constitute a subfamily of flavonoids that possess anti-oxidative, anti-inflammatory and neuroprotective properties. However, anthocyanins are unstable because their phenolic hydroxyl groups are easily oxidized into quinones, causing a reduced biological activity...
February 7, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28173800/oxidized-ldl-induced-jab1-influences-nf-%C3%AE%C2%BAb-independent-inflammatory-signaling-in-human-macrophages-during-foam-cell-formation
#7
Anja Schwarz, Gabriel A Bonaterra, Hans Schwarzbach, Ralf Kinscherf
BACKGROUND: Oxidized low-density lipoprotein (oxLDL) mediates the transformation of macrophages (MΦ) to cholesterol-rich foam cells and the release of pro-inflammatory cytokines during atherogenesis. JAB1 (Jun activation domain binding protein-1) is present in all stages of human plaques, involved in the Toll-like receptor-mediated activation of p38 mitogen-activated protein kinase (MAPK) and controls nuclear factor-kappa B (NF-κB) activation. Thus, we were interested in the role of JAB1 during foam cell formation of MΦ after oxLDL exposition...
February 7, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28160073/genistein-improves-schistosomiasis-liver-granuloma-and-fibrosis-via-dampening-nf-kb-signaling-in-mice
#8
Chunpeng Wan, Fen Jin, Youqin Du, Kang Yang, Liangliang Yao, Zhigang Mei, Weifeng Huang
In schistosomiasis, egg deposition in the liver contributes to the formation of hepatic granuloma and fibrosis, which are the most serious clinical pathological features. It has been proposed that activation of the nuclear factor kappa B (NF-κB) signaling pathways is closely associated with the development of hepatic granuloma and fibrosis. Genistein has been shown to inhibit the activity of NF-κB signaling pathways, which might be a potential agent to protect against Schistosoma japonicum egg-induced liver granuloma and fibrosis...
February 3, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28152507/the-mutational-landscape-of-ocular-marginal-zone-lymphoma-identifies-frequent-alterations-in-tnfaip3-followed-by-mutations-in-tbl1xr1-and-crebbp
#9
Hyunchul Jung, Hae Yong Yoo, Seung Ho Lee, Sohyun Shin, Sang Cheol Kim, Sejoon Lee, Je-Gun Joung, Jae-Yong Nam, Daeun Ryu, Jae Won Yun, Jung Kyoon Choi, Ambarnil Ghosh, Kyeong Kyu Kim, Seok Jin Kim, Won Seog Kim, Woong-Yang Park, Young Hyeh Ko
Ocular marginal zone lymphoma is a common type of low-grade B-cell lymphoma. To investigate the genomic changes that occur in ocular marginal zone lymphoma, we analyzed 10 cases of ocular marginal zone lymphoma using whole-genome and RNA sequencing and an additional 38 cases using targeted sequencing. Major genetic alterations affecting genes involved in nuclear factor (NF)-κB pathway activation (60%), chromatin modification and transcriptional regulation (44%), and B-cell differentiation (23%) were identified...
January 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28138997/lipopolysaccharide-promotes-the-development-of-murine-endometriosis-like-lesions-via-the-nuclear-factor-kappa-b-pathway
#10
Yukihiro Azuma, Fuminori Taniguchi, Kazuomi Nakamura, Kei Nagira, Yin Mon Khine, Tomoiki Kiyama, Takashi Uegaki, Masao Izawa, Tasuku Harada
PROBLEM: Is lipopolysaccharide (LPS) involved in the development of endometriosis? METHOD OF STUDY: BALB/c mice (n=69) were used for the murine endometriosis model. Mice with surgically induced endometriosis were injected with LPS intraperitoneally. After 4 weeks of LPS injections with or without the nuclear factor-kappa B (NF-κB) inhibitor, the extent of endometriosis-like lesions was evaluated. Expression of inflammatory factors in the implants was evaluated using real-time RT-PCR...
January 31, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28133073/-antitumor-effects-of-a-combined-treatment-with-bortezomib-and-gemcitabine-in-bile-duct-cancer-cell-lines
#11
Kazunori Sugimura, Tsutomu Namikawa, Yuka Takezaki, Hiroyuki Kitagwa, Masaya Munekage, Kazuhiro Hanazaki
Several studies have reported that activation of nuclear factor-kappa B(NF-kB)leads to resistance to chemotherapy and radiotherapy, whereas inhibition of NF-kB activity decreases malignant manifestations and enhances sensitivity to anticancer drugs. In the present study, we used bile duct cancer(BDC)cell lines HuH28 and HuCCT1 to examine if bortezomib, an inhibitor of NF-kB activity, enhances the sensitivity to the currently used chemotherapy drug gemcitabine. We carried out experiments in the following 4 treatment groups: control, 100 nM gemcitabine, 80 nM bortezomib, and a combination of 80 nM bortezomib and 100 nM gemcitabine...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28117305/dose-dependent-cytotoxicity-evaluation-of-graphite-nanoparticles-for-diamond-like-carbon-film-application-on-artificial-joints
#12
T T Liao, Q Y Deng, B J Wu, S S Li, X Li, J Wu, Y X Leng, Y B Guo, N Huang
While a diamond-like carbon (DLC)-coated joint prosthesis represents the implant of choice for total hip replacement in patients, it also leads to concern due to the cytotoxicity of wear debris in the form of graphite nanoparticles (GNs), ultimately limiting its clinical use. In this study, the cytotoxicity of various GN doses was evaluated. Mouse macrophages and osteoblasts were incubated with GNs (<30 nm diameter), followed by evaluation of cytotoxicity by means of assessing inflammatory cytokines, results of alkaline phosphatase assays, and related signaling protein expression...
January 24, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28109806/momordica-charantia-polysaccharides-ameliorate-oxidative-stress-hyperlipidemia-inflammation-and-apoptosis-during-myocardial-infarction-by-inhibiting-the-nf-%C3%AE%C2%BAb-signaling-pathway
#13
Mohammad Raish
The polysaccharide extract of Momordica charantia has various biological activities; however, its effect on endothelial dysfunction in myocardial infarction remains unclear. To elucidate this, myocardial infarction was induced in rats using isoproterenol (ISP). Pretreatment with M. charantia polysaccharides (MCP; 150 or 300mg/kg) for 25days significantly inhibited increases in heart weight, the heart-weight-to-body-weight ratio, and infarction size, and ameliorated the increased serum levels of aspartate transaminase, creatine kinase, lactate dehydrogenase, total cholesterol, triglycerides, very-low-density lipoprotein cholesterol, low-density lipoprotein cholesterol, and high-density lipoprotein cholesterol...
April 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28106824/identification-of-the-muc2-promoter-as-a-strong-promoter-for-intestinal-gene-expression-through-generation-of-transgenic-quail-expressing-gfp-in-gut-epithelial-cells
#14
Rachel M Woodfint, Paula R Chen, Jinsoo Ahn, Yeunsu Suh, Seongsoo Hwang, Sang Suk Lee, Kichoon Lee
Identification of tissue- and stage-specific gene promoters is valuable for delineating the functional roles of specific genes in genetically engineered animals. Here, through the comparison of gene expression in different tissues by analysis of a microarray database, the intestinal specificity of mucin 2 (MUC2) expression was identified in mice and humans, and further confirmed in chickens by RT-PCR (reverse transcription-PCR) analysis. An analysis of cis-acting elements in avian MUC2 gene promoters revealed conservation of binding sites, within a 2...
January 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106111/broad-range-antiviral-activity-of-hydrogen-sulfide-against-highly-pathogenic-rna-viruses
#15
Nikolay Bazhanov, Olivier Escaffre, Alexander N Freiberg, Roberto P Garofalo, Antonella Casola
Hydrogen sulfide is an important endogenous mediator that has been the focus of intense investigation in the past few years, leading to the discovery of its role in vasoactive, cytoprotective and anti-inflammatory responses. Recently, we made a critical observation that H2S also has a protective role in paramyxovirus infection by modulating inflammatory responses and viral replication. In this study we tested the antiviral and anti-inflammatory activity of the H2S slow-releasing donor GYY4137 on enveloped RNA viruses from Ortho-, Filo-, Flavi- and Bunyavirus families, for which there is no FDA-approved vaccine or therapeutic available, with the exception of influenza...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28103144/role-of-different-natural-antioxidants-in-the-modulation-of-mrna-expression-of-apoptotic-molecules-in-the-livers-of-carbon-tetrachloride-intoxicated-rats
#16
Nouf M Al-Rasheed, Naglaa F El-Orabi, Laila Mohamed Fadda, Hanaa Mahmoud Ali, Nawal M Al-Rasheed, Yieldez Bassiouni, Abeer Mohammad Aldbass
Overexpression of nuclear factor (NF-κB) or activation of Smad3 by transforming growth factor β (TGF-β1) induced by oncogenes results in overexpression of fibrotic processes and hence cell death. The objective of this study is to examine whether Silymarin (Sil) alone or in combination with Vitamin E (Vit E) and/or Curcumin (Cur) plays a modulatory role against the overexpression of NF-κB, and TGF-β that induced in response to carbon tetrachloride (CCl4) administration. The present work revealed that CCl4 induced elevation of in serum alanine aminotransferase (ALT), Apoptosis regulator (Bax), Smad3, TGF-β, and NF-kB hepatic mRNA expression (using Real-time PCR), administration of Sil alone downregulated these expressions...
January 19, 2017: Animal Biotechnology
https://www.readbyqxmd.com/read/28100002/targeting-i%C3%AE%C2%BAbns-in-allergic-asthma-where-it-resides-matters
#17
EDITORIAL
Shaon Sengupta, Angela Haczku
The activity NF-κB, a pro-inflammatory transcription factor, and its complex modulation play a central role in in inflammatory airways disease such as allergic airway hyperresponsiveness. In a new study, Yokota and colleagues investigated IκBNS - an atypical inhibitor of NF-kB (IκB). Using elegant bone marrow chimera studies in mice, they found that IκBNS differentially modulated NF-κB activity in hematopoietic and non-hematopoietic cells. They also showed that by binding to the promoter region, this nuclear protein directly induced the MUC5AC gene in airway epithelial cells...
January 18, 2017: Allergy
https://www.readbyqxmd.com/read/28099441/puma-and-nf-kb-are-cell-signaling-predictors-of-reovirus-oncolysis-of-breast-cancer
#18
Chandini Thirukkumaran, Zhong-Qiao Shi, Ponnampalam Thirukkumaran, Joanne Luider, Karen Kopciuk, Jason Spurrell, Kate Elzinga, Don Morris
BACKGROUND AND PURPOSE: Reovirus is a ubiquitous RNA virus that exploits aberrant signaling pathways for its replication. The oncolytic potential of reovirus against numerous cancers under pre-clinical/clinical conditions has been documented by us and others. Despite its proven clinical activity, the underlying mechanisms of reovirus oncolysis is still not well elucidated. If reovirus therapy is to be optimized for cancer, including breast cancer patients, it is imperative to understand the mechanisms of reovirus oncolysis, especially in treatment of resistant tumour...
2017: PloS One
https://www.readbyqxmd.com/read/28093570/vitamin-d-administration-cognitive-function-bbb-permeability-and-neuro-inflammatory-factors-in-high-fat-diet-induced-obese-rats
#19
G Hajiluian, G Nameni, P Shahabi, M Mesgari-Abbasi, S Sadigh-Eteghad, M A Farhangi
OBJECTIVES: The purpose of this research is to investigate the effects of vitamin D administration on cognitive function, nuclear factor Kappa-B (NF-kB), brain derived neurotrophic factor (BDNF) concentration in the hippocampus and blood-brain barrier (BBB) permeability in high-fat diet (HFD) induced obese rats. METHODS: Male Wistar rats were fed either a control diet or HFD for 16 weeks (n=20); then each group was randomized into two subgroups supplemented orally with 500 IU/kg vitamin D for 5 weeks...
January 17, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28092699/infection-of-human-intestinal-epithelial-cells-by-invasive-bacteria-activates-nf-%C3%AE%C2%BAb-and-increases-icam-1-expression-through-nod1
#20
Woon Geon Shin, Bum Joon Park, Sung Joong Lee, Jae Gyu Kim
Background/Aims: Nucleotide-binding oligomerization domain 1 (NOD1) is required for primary intestinal epithelial cells (IECs) to respond to natural mucopeptides secreted by gram-negative bacteria. Infection of human IECs with invasive bacteria up-regulates intercellular adhesion molecule-1 (ICAM-1) expression. However, the role of NOD family members in host defense has been largely unknown. The aim of this study was to determine whether there is a functional role for NOD1 in the up-regulation of ICAM-1 expression in invasive bacteria-infected IECs...
January 16, 2017: Korean Journal of Internal Medicine
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