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https://www.readbyqxmd.com/read/28108339/transcriptome-analysis-of-the-effect-of-polyunsaturated-fatty-acids-against-vibrio-vulnificus-infection-in-oreochromis-niloticus
#1
Chieh-Yu Pan, Yu-Hao Liu, Hong-Yi Gong, Jyh-Yih Chen
Vibrio vulnificus infection causes severe economic losses in Oreochromis niloticus aquaculture by inducing pro-inflammatory cytokines, that lead to inflammation and mortality. Omega-3 fatty acids, such as Docosahexaenoic acid (DHA) and Eicosapentaenoic acid (EPA), have been reported for their anti-inflammatory and antibacterial abilities in murine and zebrafish models. However, the anti-inflammatory and antibacterial functions of DHA and EPA in commercial aquaculture organisms such as Oreochromis niloticus remain unknown...
January 17, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28104813/structural-modeling-defines-transmembrane-residues-in-adam17-that-are-crucial-for-rhbdf2-adam17-dependent-proteolysis
#2
Xue Li, Thorsten Maretzky, Jose Manuel Perez-Aguilar, Sébastien Monette, Gisela Weskamp, Sylvain Le Gall, Bruce Beutler, Harel Weinstein, Carl P Blobel
A disintegrin and metalloproteinase 17 (ADAM17) controls the release of the pro-inflammatory cytokine tumor necrosis factor α (TNFα) and is crucial for protecting the skin and intestinal barrier by proteolytic activation of Epidermal growth factor receptor (EGFR)-ligands. The seven-membrane spanning inactive Rhomboid2 (iRhom2; Rhbdf2) is required for ADAM17-dependent TNFα shedding and crosstalk with the EGFR, and a point mutation (sinecure, sin) in the first transmembrane domain (TMD) of Rhbdf2 (Rhbdf2(sin)) blocks TNFα shedding, yet little is known about the underlying mechanism...
January 19, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28100498/the-predominant-cd4-th1-cytokine-elicited-to-chlamydia-trachomatis-infection-in-women-is-tumor-necrosis-factor-alpha-not-interferon-gamma
#3
Stephen J Jordan, Kanupriya Gupta, Brian M O Ogendi, Rakesh K Bakshi, Richa Kapil, Christen G Press, Steffanie Sabbaj, Jeannette Y Lee, William M Geisler
Chlamydia trachomatis infection is the most prevalent bacterial sexually transmitted infection and can cause significant reproductive morbidity in women. There is insufficient knowledge of C. trachomatis-specific immune responses in humans, which could be important in guiding vaccine development efforts. In contrast, murine models have clearly demonstrated the essential role of Type 1 T helper cells (Th1), especially interferon-gamma (IFN-γ) producing CD4(+) T-cells, in protective immunity to chlamydia. To determine the frequency and magnitude of Th1 cytokine responses elicited to C...
January 18, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28099148/suberoylanilide-hydroxamic-acid-increases-anti-cancer-effect-of-tumor-necrosis-factor-%C3%AE-through-up-regulation-of-tnf-receptor-1-in-lung-cancer-cells
#4
Bo Ra You, Bo Ram Han, Woo Hyun Park
Suberoylanilide hydroxamic acid (SAHA) as a histone deacetylase (HDAC) inhibitor has anti-cancer effect. Here, we evaluated the effect of SAHA on HDAC activity and cell growth in many normal lung and cancer cells. We observed that the HDAC activities of lung cancer cells were higher than that of normal lung cells. SAHA inhibited the growth of lung cancer cells regardless of the inhibitory effect on HDAC. This agent induced a G2/M phase arrest and apoptosis, which was accompanied by mitochondrial membrane potential (MMP: ΔΨm) loss in lung cancer cells...
January 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28096658/anticancer-and-anti-inflammatory-activities-of-girinimbine-isolated-from-murraya-koenigii
#5
Venoos Iman, Syam Mohan, Siddig Ibrahim Abdelwahab, Hamed Karimian, Noraziah Nordin, Mehran Fadaeinasab, Mohamad Ibrahim Noordin, Suzita Mohd Noor
Therapy that directly targets apoptosis and/or inflammation could be highly effective for the treatment of cancer. Murraya koenigii is an edible herb that has been traditionally used for cancer treatment as well as inflammation. Here, we describe that girinimbine, a carbazole alkaloid isolated from M. koenigii, induced apoptosis and inhibited inflammation in vitro as well as in vivo. Induction of apoptosis in human colon cancer cells (HT-29) by girinimbine revealed decreased cell viability in HT-29, whereas there was no cytotoxic effect on normal colon cells...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28096440/tnf-signaling-in-peritoneal-mesothelial-cells-pivotal-role-of-cflipl
#6
Willie M Lüdemann, Danijela Heide, Lars Kihm, Martin Zeier, Peter Scheurich, Vedat Schwenger, Julia Ranzinger
♦ Background: Peritoneal dialysis (PD) coincides with high concentrations of proinflammatory cytokines, such as tumor necrosis factor (TNF), in the peritoneal cavity. During treatment, chronic inflammatory processes lead to damage of the peritoneal membrane and a subsequent ultrafiltration failure. Human peritoneal mesothelial cells (HPMCs) play a central role as mediators and targets of PD-related inflammatory changes. Although TNF Receptor 1 (TNFR1) is expressed in high numbers on the cells, TNF-induced apoptosis is inhibited...
January 17, 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28091411/protective-effects-of-calpain-inhibition-on-neurovascular-unit-injury-through-downregulating-nuclear-factor-%C3%AE%C2%BAb-related-inflammation-during-traumatic-brain-injury-in-mice
#7
Xiao-Gang Tao, Jing-Hua Shi, Shu-Yu Hao, Xue-Tao Chen, Bai-Yun Liu
BACKGROUND: In addition to neurons, all components of the neurovascular unit (NVU), such as glial, endothelial, and basal membranes, are destroyed during traumatic brain injury (TBI). Previous studies have shown that excessive stimulation of calpain is crucial for cerebral injury after traumatic insult. The objective of this study was to investigate whether calpain activation participated in NVU disruption and edema formation in a mouse model of controlled cortical impact (CCI). METHODS: One hundred and eight mice were divided into three groups: the sham group, the control group, and the MDL28170 group...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28089689/piecing-it-together-unraveling-the-elusive-structure-function-relationship-in-single-pass-membrane-receptors
#8
REVIEW
Christopher C Valley, Andrew K Lewis, Jonathan N Sachs
The challenge of crystallizing single-pass plasma membrane receptors has remained an obstacle to understanding the structural mechanisms that connect extracellular ligand binding to cytosolic activation. For example, the complex interplay between receptor oligomerization and conformational dynamics has been, historically, only inferred from static structures of isolated receptor domains. A fundamental challenge in the field of membrane receptor biology, then, has been to integrate experimentally observable dynamics of full-length receptors (e...
January 12, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28081504/the-expression-and-function-of-the-neonatal-fc-receptor-in-thyrocytes-of-hashimoto-s-thyroiditis
#9
Chenxu Zhao, Ying Gao, Lanlan Zhao, Yuan Li, Yang Zhang, Suxia Wang, Hong Zhang, Guizhi Lu, Xiaohui Guo
OBJECTIVE: Thyroglobulin (Tg) and thyroid peroxidase (TPO) antibodies (TgAb and TPOAb), which are primarily of the immunoglobulin G (IgG) class, can mediate antibody-dependent cell-mediated cytotoxicity in vitro. However, it is unclear whether any thyrocyte molecules can facilitate the transport and elimination of TgAb and TPOAb. The IgG transport receptor neonatal Fc receptor (FcRn) is a candidate mediator of these processes. In this study, we aimed to evaluate FcRn expression and function in normal and Hashimoto's thyroiditis (HT) thyrocytes...
January 9, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28078586/study-of-the-cd95-mediated-non-apoptotic-signaling-pathway-pi3k
#10
Amélie Fouqué, Patrick Legembre
CD95 is a plasma membrane receptor that belongs to the TNF receptor family (Itoh and Nagata, J Biol Chem 268(15):10932-10937, 1993; Trauth et al., Science 245(4915):301-305, 1989). Accumulating evidence indicate that this so-called death receptor can also trigger non-apoptotic signaling pathways promoting inflammation and oncogenesis (Barnhart et al., Embo J 23(15):3175-3185, 2004; Chen et al., Nature 465(7297):492-496, 2010; Legembre et al., Cell Cycle 3(10):1235-1239, 2004; Legembre et al., EMBO Rep 5(11):1084-1089, 2004; Malleter et al...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28078577/production-of-the-non-apoptotic-metalloprotease-cleaved-cd95l-and-its-cytotoxic-recombinant-counterpart-designed-ig-cd95l
#11
Eléonore Lepvrier, Sophie Martin, Brigitte Collet
The ligand of CD95, CD95L (also known as FasL or CD178), is a type II transmembrane protein that belongs to the Tumor Necrosis factor (TNF) family (Fig. 1a). This membrane-bound cytokine is mainly expressed at the surface of activated T lymphocytes and natural killer cells, where it is used as an apoptotic factor to eliminate infected and transformed cells (Strasser et al., Immunity 30:180-192, 2009).
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28078497/anti-inflammatory-effect-of-naravelia-zeylanica-dc-via-suppression-of-inflammatory-mediators-in-carrageenan-induced-abdominal-oedema-in-zebrafish-model
#12
Sanmuga Priya Ekambaram, Senthamil Selvan Perumal, Selvaranjani Pavadai
The traditional herbal medicines are receiving great importance in the health care sector, especially in Indian system of medicine, i.e, Ayurveda. The present study focused on the standardization of Naravelia zeylanica (L.) DC in terms of its active phytochemicals and to evaluate the anti-inflammatory activity of ethanol extract of N. zeylanica (ENZ). An analytical method was developed by high-performance liquid chromatography for simultaneous determination of β-sitosterol, lupeol and oleanolic acid in ENZ...
January 11, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28077321/camkii%C3%AE-subtypes-differentially-regulate-infarct-formation-following-ex-vivo-myocardial-ischemia-reperfusion-through-nf-%C3%AE%C2%BAb-and-tnf-%C3%AE
#13
Charles B B Gray, Takeshi Suetomi, Sunny Xiang, Erik A Blackwood, Christopher C Glembotski, Shigeki Miyamoto, B Daan Westenbrink, Joan Heller Brown
Deletion of Ca(2+)/calmodulin-dependent protein kinase II delta (CaMKIIδ) has been shown to protect against in vivo ischemia/reperfusion (I/R) injury. It remains unclear which CaMKIIδ isoforms and downstream mechanisms are responsible for the salutary effects of CaMKIIδ gene deletion. In this study we sought to compare the roles of the CaMKIIδB and CaMKIIδC subtypes and the mechanisms by which they contribute to ex vivo I/R damage. WT, CaMKIIδKO, and mice expressing only CaMKIIδB or δC were subjected to ex vivo global ischemia for 25min followed by reperfusion...
January 7, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28074262/activated-microglia-induce-the-production-of-reactive-oxygen-species-and-promote-apoptosis-of-co-cultured-retinal-microvascular-pericytes
#14
Xinyi Ding, Meng Zhang, Ruiping Gu, Gezhi Xu, Haixiang Wu
PURPOSE: Pericyte apoptosis is a predominant feature of early diabetic retinopathy. In diabetic retinopathy, activated microglia migrate and release proinflammatory cytokines that contribute to disruption of the blood-retinal barrier, neuronal loss, and enhanced ROS production. Reactive oxygen species (ROS) are implicated in pericyte death; however, the mechanism by which activated microglia affect retinal microvascular pericytes is unclear. We hypothesized that activated microglia may promote pericyte apoptosis by enhancing ROS production...
January 10, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28065786/cisplatin-induced-necroptosis-in-tnf%C3%AE-dependent-and-independent-pathways
#15
Yanfang Xu, Hua-Bin Ma, Yu-Lu Fang, Zhi-Rong Zhang, Jing Shao, Mao Hong, Chao-Jun Huang, Jing Liu, Rui-Qing Chen
Cisplatin is a chemotherapeutic drug for treatment of many solid tumors. It has been shown to induce apoptosis and/or necrosis in different types of cancer cells. However, the underlying mechanisms remain elusive. In this study, we provide evidences that cisplatin induces necroptosis in receptor-interacting protein 3 (RIP3)-expressing cell lines, but not in cell lines lacking RIP3 protein expression. Deficiency of core components of necroptotic pathway, RIP1, RIP3, or mixed lineage kinase domain-like protein (MLKL) blocked cisplatin-induced cell death in L929 cells...
January 6, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28062509/adam17-deficiency-promotes-atherosclerosis-by-enhanced-tnfr2-signaling-in-mice
#16
Alexandros Nicolaou, Zhen Zhao, Bernd H Northoff, Kristina Sass, Andreas Herbst, Alexander Kohlmaier, Athena Chalaris, Christian Wolfrum, Christian Weber, Sabine Steffens, Stefan Rose-John, Daniel Teupser, Lesca M Holdt
OBJECTIVE: ADAM17 (a disintegrin and metalloproteinase 17) is a sheddase releasing different types of membrane-bound proteins, including adhesion molecules, cytokines, and their receptors as well as inflammatory mediators. Because these substrates modulate important mechanisms of atherosclerosis, we hypothesized that ADAM17 might be involved in the pathogenesis of this frequent disease. APPROACH AND RESULTS: Because Adam17-knockout mice are not viable, we studied the effect of Adam17 deficiency on atherosclerosis in Adam17 hypomorphic mice (Adam17(ex/ex)), which have low residual Adam17 expression...
December 22, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28056924/anti-arthritic-activity-of-ethanol-extract-of-claoxylon-indicum-on-freund-s-complete-adjuvant-induced-arthritis-in-mice
#17
Yong Chen, Qi-Wen Wang, Jian Zuo, Jian-Wei Chen, Xiang Li
BACKGROUND: Claoxylon indicum Hassk. (Euphorbiaceae), named Diu Le Bang, have functions of dehumidification and relieving swelling pain, and is used as a folk medicine to treat Rheumatoid arthritis (RA), lumbocrural pain and foot edema in the south of China. The aim of the present study was to investigate the anti-arthritic activity of the ethanol extract of Claoxylon indicum (CIE) on mice with adjuvant induced joint arthritis. METHODS: Adjuvant arthritis was induced in mice by subcutaneous injection of complete Freund's adjuvant into the plantar surface of right hind paw...
January 5, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28056236/-cd137-cd137l-signaling-promotes-angiogenesis-in-atherosclerosis-plaque-of-mice-through-activating-nuclear-factor-of-activated-t-cells-c1
#18
J Y Weng, J C Yan, Y Chen, Z Q Wang, C P Wang, C Shao
Objective: To explore whether CD137-CD137L signaling can promote angiogenesis in atherosclerosis plaque via activating nuclear factor of activated T cells c1 (NFATc1). Methods: Apolipoprotein E knock out mice were divided into the following groups: control group (n=5), CD137 activated group(n=5)and CD137 inhibited group (n=5). Immunohistochemistry was performed to detect the expression of CD31 in aortic plaque. Endothelial cells (bEnd.3) were purchased from ATCC and divided into the following groups: control group, IgG isotype control group, CD137 activated group and CD137 inhibited group...
December 24, 2016: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28054660/antimicrobial-and-anti-inflammatory-activities-of-three-chensinin-1-peptides-containing-mutation-of-glycine-and-histidine-residues
#19
Weibing Dong, Xiaoman Mao, Yue Guan, Yao Kang, Dejing Shang
The natural peptide chensinin-1 doesnot exhibit its desired biological properties. In this study, the mutant MC1-1 was designed by replacing Gly in the chensinin-1 sequence with Trp. Mutants MC1-2 and MC1-3 were designed based on the MC1-1 sequence to investigate the specific role of His residues. The mutated peptides presented α-helicity in a membrane-mimetic environment and exhibited broad-spectrum antimicrobial activities; in contrast to Trp residues, His residues were dispensable for interacting with the cell membrane...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28052725/paracrine-activity-from-adipose-derived-stem-cells-on-in-vitro-wound-healing-in-human-tympanic-membrane-keratinocytes
#20
Huan Ting Ong, Sharon Redmond, Robert Marano, Marcus Atlas, Magnus von Unge, Peder Aabel, Rodney J Dilley
Stem cell therapies for tympanic membrane repair have shown initial experimental success using mesenchymal stem cells in rat models to promote healing, however the mechanisms providing this benefit are not known. We investigated in vitro the paracrine effects of human adipose-derived stem cells (ADSC) on wound healing mechanisms for human tympanic membrane-derived keratinocytes (hTM) and immortalised human keratinocytes (HaCat). ADSC conditioned media (CMADSC) were assessed for paracrine activity on keratinocyte proliferation and migration, with hypoxic conditions for ADSC culture used to generate contrasting effects on cytokine gene expression...
January 4, 2017: Stem Cells and Development
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