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https://www.readbyqxmd.com/read/29138810/angiotensin-converting-enzyme-2-angiotensin-1-7-mas-axis-prevents-pancreatic-acinar-cell-inflammatory-response-via-inhibition-of-the-p38-mitogen-activated-protein-kinase-nuclear-factor-%C3%AE%C2%BAb-pathway
#1
Xiaozheng Yu, Lijian Cui, Fei Hou, Xiaoya Liu, Yan Wang, Yan Wen, Cheng Chi, Chunyun Li, Ruixia Liu, Chenghong Yin
The aim of the present study was to investigate the role of the angiotensin-converting enzyme (ACE)2-angiotensin‑(Ang)-(1-7)-Mas axis in the pathogenesis of pancreatitis and the association between this axis and the p38 mitogen-activated protein kinase (p38 MAPK)/nuclear factor (NF-κB) signaling pathway in pancreatic acinar cells. Mouse pancreatic acinar cancer (MPC-83) cells were stimulated with 10 nM caerulein (CAE) to create an in vitro model of acute pancreatitis, and collected for analysis at 2, 6, 12, 24 and 48 h post stimulation...
November 13, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29137287/n-myc-downstream-regulated-gene-1-promotes-apoptosis-in-colorectal-cancer-via-up-regulating-death-receptor-4
#2
Xian Zhang, Bo Feng, Fan Zhu, Chaoran Yu, Jiaoyang Lu, Meng Pan, Zirui He, Xiongzhi Wangpu, Jing Sun, Xiao Yang
The aim of this study was to evaluate the clinical significance of N-myc downstream-regulated gene 1 (NDRG1) in colorectal cancer (CRC) patients and to explore the mechanisms governing the role of NDRG1 in apoptosis of CRC cells. In the current study, we found that NDRG1 was a prognostic marker of CRC patients. Moreover, NDRG1 expression negatively correlated to tumor size and clinical TNM stage, suggesting that NDRG1 might act as a tumor suppressor by inhibiting proliferation or inducing apoptosis in CRC. Consistently, substantial apoptosis was observed in vitro and in vivo in the presence of NDRG1...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29131527/3d-matrix-embedding-inhibits-cycloheximide-mediated-sensitization-to-tnf-alpha-induced-apoptosis-of-human-endothelial-cells
#3
Michael Saemisch, Markus Nickmann, Lisa Riesinger, Elazer R Edelman, Heiko Methe
The programmed form of cell death (apoptosis) is essential for normal development of multicellular organisms. Dysregulation of apoptosis has been linked with embryonal death and is involved in the pathophysiology of various diseases. Others and we previously demonstrated endothelial biology being intertwined with biochemical and structural composition of the subendothelial basement membrane. We now demonstrate that a three-dimensional growing environment significantly shields endothelial cells from cytokine-induced apoptosis...
November 13, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29131114/rosmarinic-acid-attenuates-the-activation-of-murine-microglial-n9-cells-through-the-downregulation-of-inflammatory-cytokines-and-cleaved-caspase-3
#4
Vanessa Rodrigues Coelho, Cassiana Macagnan Viau, Renata Bartolomeu Staub, Marcele Silva De Souza, Pricila Pflüger, Gabriela Gregory Regner, Patrícia Pereira, Jenifer Saffi
OBJECTIVE: The present study evaluated the ability of rosmarinic acid (RA) to inhibit microglia activation induced by lipopolysaccharide (LPS) in the N9 murine microglial cell line, and investigated the putative mechanisms involved in this process. METHODS: In all tests, N9 murine microglial cells were pretreated with RA (0.1, 1.0, and 10 μM) for 20 h and exposed to LPS (1 μM/mL) for 4 h. Cell viability was measured by Trypan blue exclusion assay. Flow cytometry was used to detect reactive oxygen species (ROS), quantify cleaved caspase-3, and analyze the mitochondrial electrochemical potential...
November 7, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29127312/progesterone-attenuates-temporomandibular-joint-inflammation-through-inhibition-of-nf-%C3%AE%C2%BAb-pathway-in-ovariectomized-rats
#5
Xin-Tong Xue, Xiao-Xing Kou, Chen-Shuang Li, Rui-Yun Bi, Zhen Meng, Xue-Dong Wang, Yan-Heng Zhou, Ye-Hua Gan
Sex hormones may contribute to the symptomatology of female-predominant temporomandibular disorders (TMDs) inflammatory pain. Pregnant women show less symptoms of TMDs than that of non-pregnant women. Whether progesterone (P4), one of the dominant sex hormones that regulates multiple biological functions, is involved in symptoms of TMDs remains to be explored. Freund's complete adjuvant were used to induce joint inflammation. We evaluated the behavior-related and histologic effects of P4 and the expression of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6 in the synovial membrane...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29123466/neuroprotective-effect-of-%C3%AE-caryophyllene-on-cerebral-ischemia-reperfusion-injury-via-regulation-of-necroptotic-neuronal-death-and-inflammation-in-vivo-and-in-vitro
#6
Mei Yang, Yongjiu Lv, Xiaocui Tian, Jie Lou, Ruidi An, Qian Zhang, Minghang Li, Lu Xu, Zhi Dong
Necrotic cell death is a hallmark feature of ischemic stroke and it may facilitate inflammation by releasing intracellular components after cell-membrane rupture. Previous studies reported that β-caryophyllene (BCP) mitigates cerebral ischemia-reperfusion (I/R) injury, but the underlying mechanism remains unclear. We explored whether BCP exerts a neuroprotective effect in cerebral I/R injury through inhibiting necroptotic cell death and inflammation. Primary neurons with and without BCP (0.2, 1, 5, 25 μM) treatment were exposed to oxygen-glucose deprivation and re-oxygenation (OGD/R)...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29122553/fisetin-as-a-caloric-restriction-mimetic-protects-rat-brain-against-aging-induced-oxidative-stress-apoptosis-and-neurodegeneration
#7
Sandeep Singh, Abhishek Kumar Singh, Geetika Garg, Syed Ibrahim Rizvi
AIM: In the present study, attempts have been made to evaluate the potential role of fisetin, a caloric restriction mimetic (CRM), for neuroprotection in D-galactose (D-gal) induced accelerated and natural aging models of rat. MAIN METHODS: Fisetin was supplemented (15mg/kg b.w., orally) to young, D-gal induced aged (D-gal 500mg/kg b.w subcutaneously) and naturally aged rats for 6weeks. Standard protocols were employed to measure pro-oxidants, antioxidants and mitochondrial membrane potential in brain tissues...
November 7, 2017: Life Sciences
https://www.readbyqxmd.com/read/29118927/topical-insulin-accelerates-cutaneous-wound-healing-in-insulin-resistant-diabetic-rats
#8
Tianyi Yu, Min Gao, Peilang Yang, Qing Pei, Dan Liu, Di Wang, Xiong Zhang, Yan Liu
Insulin signaling defects could lead to insulin resistance in insulin target organs: typically, in the muscler, liver, and adipose tissue. We have observed that insulin accelerated diabetic wound healing in our previous works; to further elucidate the mechanism, we investigated the expression and activation of insulin and insulin-like growth factor (IGF)-1 signaling, compared insulin sensitivity in skin tissue with that in liver tissue, and also observed the regulation of insulin on inflammatory response of wounds during the healing process...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29116619/evaluation-of-efficiency-of-modified-polypropylenimine-ppi-with-alkyl-chains-as-non-viral-vectors-used-in-co-delivery-of-doxorubicin-and-trail-plasmid
#9
Mahboubeh Ebrahimian, Sahar Taghavi, Maryam Ghoreishi, Shahrzad Sedghi, Sara Amel Farzad, Mohammad Ramezani, Maryam Hashemi
In this study, co-delivery system was achieved via plasmid encoding TNF related apoptosis inducing ligand (pTRAIL) and doxorubicin (DOX) using carrier based on polypropylenimine (PPI) modified with 10-bromodecanoic acid. Incorporation of alkylcarboxylate chain to PPIs (G4 and G5) could improve transfection efficiency via overcoming the plasma membrane barrier of the cells and decrease cytotoxicity of PPI. Characterization of fabricated NPs revealed that PPI G5 in which 30% of primary amines were substituted by alkyl carboxylate chain (PPI G5-Alkyl 30%) has higher drug loading as compared to the other formulations...
November 7, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/29113797/caveolin-1-a-binding-protein-of-cd26-is-essential-for-the-anti-inflammatory-effects-of-dipeptidyl-peptidase-4-inhibitors-on-human-and-mouse-macrophages
#10
Munenori Hiromura, Kyoko Nohtomi, Yusaku Mori, Hideo Kataoka, Marika Sugano, Kei Ohnuma, Hirotaka Kuwata, Tsutomu Hirano
We previously reported that inhibition of dipeptidyl peptidase (DPP)-4, the catalytic site of CD26, prevents atherosclerosis in animal models through suppression of inflammation; however, the underlying molecular mechanisms have not been fully elucidated. Caveolin-1 (Cav-1), a major structural protein of caveolae located on the surface of the cellular membrane, has been reported to modulate inflammatory responses by binding to CD26 in T cells. In this study, we investigated the role of Cav-1 in the suppression of inflammation mediated by the DPP-4 inhibitor, teneligliptin, using mouse and human macrophages...
November 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29111329/exosomes-derived-from-pancreatic-cancer-cells-induce-activation-and-profibrogenic-activities-in-pancreatic-stellate-cells
#11
Atsushi Masamune, Naoki Yoshida, Shin Hamada, Tetsuya Takikawa, Tatsuhide Nabeshima, Tooru Shimosegawa
Pancreatic cancer cells (PCCs) interact with pancreatic stellate cells (PSCs), which play a pivotal role in pancreatic fibrogenesis, to develop the cancer-conditioned tumor microenvironment. Exosomes are membrane-enclosed nanovesicles, and have been increasingly recognized as important mediators of cell-to-cell communications. The aim of this study was to clarify the effects of PCC-derived exosomes on cell functions in PSCs. Exosomes were isolated from the conditioned medium of Panc-1 and SUIT-2 PCCs. Human primary PSCs were treated with PCC-derived exosomes...
October 27, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29107812/proteolytic-maturation-of-drosophila-neuroligin-3-by-tumor-necrosis-factor-%C3%AE-converting-enzyme-in-the-nervous-system
#12
Jun Wu, Nana Tao, Yao Tian, Guanglin Xing, Huihui Lv, Junhai Han, Chengqi Lin, Wei Xie
BACKGROUND: The functions of autism-associated Neuroligins (Nlgs) are modulated by their post-translational modifications, such as proteolytic cleavage. A previous study has shown that there are different endogenous forms of DNlg3 in Drosophila, indicating it may undergo proteolytic processing. However, the molecular mechanism underlying DNlg3 proteolytic processing is unknown. Here, we report a novel proteolytic mechanism that is essential for DNlg3 maturation and function in the nervous system...
October 28, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29106990/white-light-emitting-diode-suppresses-proliferation-and-induces-apoptosis-in-hippocampal-neuron-cells-through-mitochondrial-cytochrome-c-oxydase-mediated-igf-1-and-tnf-%C3%AE-pathways
#13
Yang Yang, Yibo Zong, Qinwei Sun, Yimin Jia, Ruqian Zhao
Light emitting diode (LED) light has been tested to treat traumatic brain injury, neural degenerative diseases and psychiatric disorders. Previous studies indicate that blue LED light affects cell proliferation and apoptosis in photosensitive cells and cancer cells. In this study, we demonstrate that white LED light exposure impaired proliferation and induced apoptosis in HeLa and HT-22 hippocampal neural cells, but not C2C12 cells. Furthermore, the mechanisms underlying the effect of white LED light exposure on HT-22 cells were elucidated...
October 26, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29104459/effects-of-oral-glutamine-on-inflammatory-and-autophagy-responses-in-cancer-patients-treated-with-abdominal-radiotherapy-a-pilot-randomized-trial
#14
Juan J Ortiz de Urbina, Beatriz San-Miguel, Alfonso Vidal-Casariego, Irene Crespo, Diana I Sánchez, José L Mauriz, Jesús M Culebras, Javier González-Gallego, María J Tuñón
Background and Aims: Abdominal radiotherapy (RT) causes harm to the mid gastrointestinal mucosa by release of pro-inflammatory cytokines and promotes autophagic changes in tumor cells. This study was aimed to measure the effect of glutamine administration on markers of inflammation and autophagy in cancer patients treated with RT. Methods: In this double-blind, randomized, controlled pilot trial 43 patients under abdominal RT diagnosed of pelvic or abdominal malignancies receiving glutamine (30 g/d) or placebo (casein, 30 g/d)...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29104146/mlkl-pitp%C3%AE-signaling-mediated-necroptosis-contributes-to-cisplatin-triggered-cell-death-in-lung-cancer-a549-cells
#15
Lin Jing, Fei Song, Zhenyu Liu, Jianghua Li, Bo Wu, Zhiguang Fu, Jianli Jiang, Zhinan Chen
Necroptosis has been reported to be involved in cisplatin-induced cell death, but the mechanisms underlying the occurrence of necroptosis are not fully elucidated. In this study, we show that apart from apoptosis, cisplatin induces necroptosis in A549 cells. The alleviation of cell death by two necroptosis inhibitors-necrostatin-1 (Nec-1) and necrosulfonamide (NSA), and the phosphorylation of mixed lineage kinase domain-like protein (MLKL) at serine 358, suggest the involvement of receptor-interacting protein kinase 1 (RIPK1)-RIPK3-MLKL signaling in cisplatin-treated A549 cells...
November 2, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29104039/increased-levels-of-interleukin-22-in-thoracic-aorta-and-plasma-from-patients-with-acute-thoracic-aortic-dissection
#16
Jing Ye, Menglong Wang, Huimin Jiang, Qingwei Ji, Ying Huang, Jianfang Liu, Tao Zeng, Yao Xu, Zhen Wang, Yingzhong Lin, Jun Wan
BACKGROUND: Interleukin (IL)-22 plays important roles in the development of arterial disease, including atherosclerosis and hypertension. However, the relationship between IL-22 and acute thoracic aortic dissection (TAD) remains unknown. METHODS: Blood samples were collected from patients with chest pain who underwent computed tomography angiography of the thoracic aorta but had no known preoperative diagnosis of coronary artery disease, peripheral artery disease, arthritis, and/or membranous nephropathy...
November 3, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29098793/association-of-150-kda-oxygen-regulated-protein-with-vascular-endothelial-growth-factor-in-proliferative-diabetic-retinopathy
#17
Ahmed M Abu El-Asrar, Ajmal Ahmad, Kaiser Alam, Emilie Bittoun, Mohammad Mairaj Siddiquei, Ghulam Mohammad, Ahmed Mousa, Gert De Hertogh, Ghislain Opdenakker
PURPOSE: 150-kDa oxygen-regulated protein (ORP150), a member of heat-shock protein family located in endoplasmic reticulum (ER), has a critical role in secretion of vascular endothelial growth factor (VEGF). We investigated expression levels of ORP150 and correlated these levels with VEGF and total vitreous antioxidant capacity (TAC) in proliferative diabetic retinopathy (PDR). We also examined expression of ORP150 in retinas of diabetic rats and in human retinal microvascular endothelial cells (HRMEC)...
November 2, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/29096716/galectin-1-and-galectin-3-expression-in-equine-mesenchymal-stromal-cells-mscs-synovial-fibroblasts-and-chondrocytes-and-the-effect-of-inflammation-on-msc-motility
#18
Heidi L Reesink, Ryan M Sutton, Carolyn R Shurer, Ryan P Peterson, Julie S Tan, Jin Su, Matthew J Paszek, Alan J Nixon
BACKGROUND: Mesenchymal stromal cells (MSCs) can be used intra-articularly to quell inflammation and promote cartilage healing; however, mechanisms by which MSCs mitigate joint disease remain poorly understood. Galectins, a family of β-galactoside binding proteins, regulate inflammation, adhesion and cell migration in diverse cell types. Galectin-1 and galectin-3 are proposed to be important intra-articular modulators of inflammation in both osteoarthritis and rheumatoid arthritis. Here, we asked whether equine bone marrow-derived MSCs (BMSCs) express higher levels of galectin-1 and -3 relative to synovial fibroblasts and chondrocytes and if an inflammatory environment affects BMSC galectin expression and motility...
November 2, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29094650/anti-inflammatory-effect-of-active-nanofibrous-polymeric-membrane-bearing-nanocontainers-of-atorvastatin-complexes
#19
Pascale Schwinté, Alexandre Mariotte, Priya Anand, Laetitia Keller, Ysia Idoux-Gillet, Olivier Huck, Florence Fioretti, Henri Tenenbaum, Philippe Georgel, Wolfgang Wenzel, Silvia Irusta, Nadia Benkirane-Jessel
AIM: We developed polymeric membranes for local administration of nonsoluble anti-inflammatory statin, as potential wound patch in rheumatic joint or periodontal lesions. METHODS: Electrospun polycaprolactone membranes were fitted with polysaccharide-atorvastatin nanoreservoirs by using complexes with poly-aminocyclodextrin. Characterization methods are UV-Visible and X-ray photoelectron spectroscopy, molecular dynamics, scanning and transmission electron microscopy...
November 2, 2017: Nanomedicine
https://www.readbyqxmd.com/read/29093555/exosomes-derived-from-hiv-1-infected-dcs-mediate-viral-trans-infection-via-fibronectin-and-galectin-3
#20
Rutuja Kulkarni, Anil Prasad
Exosomes are membrane enclosed nano-sized vesicles actively released into the extracellular milieu that can harbor genomic, proteomic and lipid cargos. Functionally, they are shown to regulate cell-cell communication and transmission of pathogens. Though studies have implicated a role for exosomes in HIV-1 pathogenesis, their mechanisms are not well defined. Here, we characterized exosomes derived from uninfected or HIV-1 infected T-cells and DCs. We demonstrate substantial differences in morphological, molecular and biogenesis machinery between exosomes derived from these two immune cell types...
November 1, 2017: Scientific Reports
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