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https://www.readbyqxmd.com/read/29518608/rip3-deficience-attenuates-potassium-oxonate-induced-hyperuricemia-and-kidney-injury
#1
Kang Wang, Lei Hu, Jian-Kang Chen
Recent preclinical and clinical evidence suggests that hyperuricemia (HU) is an independent risk factor for metabolic syndrome, hypertension, cardiovascular disease and chronic kidney disease. Receptor-interacting protein 3 (RIP3) is an important contributor in inducing programmed necrosis, representing a newly identified mechanism of cell death combining features of both apoptosis and necrosis. In our study, RIP3 was strongly expressed in mice with hyperuricemia. RIP3 deficiency attenuated hyperuricemia in mice, evidenced by reduced serum uric acid and creatinine and enhanced urinary uric acid and creatinine, as well as the improved histological alterations in renal sections...
May 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29518473/gene-expression-network-regulated-by-dna-methylation-and-microrna-during-microcystin-leucine-arginine-induced-malignant-transformation-in-human-hepatocyte-l02-cells
#2
Hong-Qiang Chen, Ji Zhao, Yan Li, Li-Xiong He, Yu-Jing Huang, Wei-Qun Shu, Jia Cao, Wen-Bin Liu, Jin-Yi Liu
Microcystin (MC) is a cyclic heptapeptide compound which could lead to the development of hepatocellular carcinoma. However, the underlying epigenetic regulation mechanism is largely unknown. In this study, microcystin-LR (L: lysine, R: arginine, MC-LR) was used to induce the malignant transformation of human hepatocyte L02 cell line. The profile of gene expression, microRNA (miRNA) and DNA methylation were detected through high-throughput sequencing. Compared with control group, the expression of 826 genes and 187 miRNAs changed significantly in MC-LR treated group...
June 1, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29382797/novel-anti-tumour-necrosis-factor-receptor-1-tnfr1-domain-antibody-prevents-pulmonary-inflammation-in-experimental-acute-lung-injury
#3
Alastair Proudfoot, Andrew Bayliffe, Cecilia M O'Kane, Tracey Wright, Adrian Serone, Philippe Jean Bareille, Vanessa Brown, Umar I Hamid, Younan Chen, Robert Wilson, Joanna Cordy, Peter Morley, Ruud de Wildt, Stuart Elborn, Matthew Hind, Edwin R Chilvers, Mark Griffiths, Charlotte Summers, Daniel Francis McAuley
BACKGROUND: Tumour necrosis factor alpha (TNF-α) is a pleiotropic cytokine with both injurious and protective functions, which are thought to diverge at the level of its two cell surface receptors, TNFR1 and TNFR2. In the setting of acute injury, selective inhibition of TNFR1 is predicted to attenuate the cell death and inflammation associated with TNF-α, while sparing or potentiating the protective effects of TNFR2 signalling. We developed a potent and selective antagonist of TNFR1 (GSK1995057) using a novel domain antibody (dAb) therapeutic and assessed its efficacy in vitro, in vivo and in a clinical trial involving healthy human subjects...
January 29, 2018: Thorax
https://www.readbyqxmd.com/read/29299971/the-role-of-the-fas-fasl-signaling-pathway-in-environmental-toxicant-induced-testicular-cell-apoptosis-an-update
#4
Mei Wang, Ping Su
The Fas/FasL signaling pathway is one of the major pathways that regulate apoptosis. Increasing studies have shown that the activation of the Fas/FasL signaling pathway is closely associated with testicular cell apoptosis. However, the mechanism involved is still unclear. We discuss recent findings regarding the molecular mechanisms by which environmental toxicants induce testicular pathology via Fas/FasL signaling. These findings suggest that Fas/FasL signaling is employed to impact the sensitivity (a response to external factors) of germ cells, disrupt steroidogenic hormone and cytokine metabolism mediated by Sertoli cells, and elicit the activation of NFAT (nuclear factor of activated T-cells) in Leydig cell apoptosis...
April 2018: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/29298131/a-systematic-review-of-p53-regulation-of-oxidative-stress-in-skeletal-muscle
#5
Kaitlyn Beyfuss, David A Hood
BACKGROUND: p53 is a tumor suppressor protein involved in regulating a wide array of signaling pathways. The role of p53 in the cell is determined by the type of imposed oxidative stress, its intensity and duration. The last decade of research has unravelled a dual nature in the function of p53 in mediating the oxidative stress burden. However, this is dependent on the specific properties of the applied stress and thus requires further analysis. METHODS: A systematic review was performed following an electronic search of Pubmed, Google Scholar, and ScienceDirect databases...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29170425/tradd-mediates-the-tumor-necrosis-factor-induced-apoptosis-of-l929-cells-in-the-absence-of-rip3
#6
Xixi Chang, Lili Wang, Zicheng Wang, Shuai Wu, Xiaoming Zhu, Shiping Hu, Yu Wang, Jiyun Yu, Guozhu Chen
Receptor-interacting protein kinase 3 (RIP3) is a critical initiator in mediating necroptosis induced by tumor necrosis factor alpha (TNFα) in L929 cells, so knockdown of RIP3 inhibits TNFα-induced L929 cell necroptosis. However, RIP3 knockdown was shown to switch TNFα-induced necroptosis to apoptosis in L929 cells in other studies. Therefore, whether RIP3 knockdown blocks the TNFα-induced death of L929 cells is controversial. In this study, TNFα activated caspase pathway and induced cell death in RIP3 knockdown L929 cells, and the RIP3-independent cell death had been blocked by Z-VAD-FMK (pan-caspase inhibitor) or caspase 8 knockdown, demonstrating that RIP3 knockdown switched TNFα-induced necroptosis to caspase-dependent apoptosis...
November 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29158991/ndufa4l2-is-associated-with-clear-cell-renal-cell-carcinoma-malignancy-and-is-regulated-by-elk1
#7
Lei Wang, Zhiqiang Peng, Kaizhen Wang, Yijun Qi, Ying Yang, Yue Zhang, Xinyuan An, Shudong Luo, Junfang Zheng
Background: Clear cell renal cell carcinoma (ccRCC) is the most common and lethal cancer of the adult kidney. However, its pathogenesis has not been fully understood till now, which hinders the therapeutic development of ccRCC. NADH dehydrogenase (ubiquinone) 1 alpha subcomplex 4-like 2 (NDUFA4L2) was found to be upregulated and play an important role in ccRCC. We aimed to further investigate the underlying mechanisms by which NDUFA4L2 exerted function and its expression level was upregulated...
2017: PeerJ
https://www.readbyqxmd.com/read/29142404/chalepin-a-compound-from-ruta-angustifolia-l-pers-exhibits-cell-cycle-arrest-at-s-phase-suppresses-nuclear-factor-kappa-b-nf-%C3%AE%C2%BAb-pathway-signal-transducer-and-activation-of-transcription-3-stat3-phosphorylation-and-extrinsic-apoptotic-pathway-in-non-small-cell
#8
Jaime Stella Moses Richardson, Norhaniza Aminudin, Sri Nurestri Abd Malek
Background: Plants have been a major source of inspiration in developing novel drug compounds in the treatment of various diseases that afflict human beings worldwide. Ruta angustifolia L. Pers known locally as Garuda has been conventionally used for various medicinal purposes such as in the treatment of cancer. Objective: A dihydrofuranocoumarin named chalepin, which was isolated from the chloroform extract of the plant, was tested on its ability to inhibit molecular pathways of human lung carcinoma (A549) cells...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29138193/stoic-beliefs-and-health-development-and-preliminary-validation-of-the-pathak-wieten-stoicism-ideology-scale
#9
Elizabeth B Pathak, Sarah E Wieten, Christopher W Wheldon
INTRODUCTION: We developed and validated a new parsimonious scale to measure stoic beliefs. Key domains of stoicism are imperviousness to strong emotions, indifference to death, taciturnity and self-sufficiency. In the context of illness and disease, a personal ideology of stoicism may create an internal resistance to objective needs, which can lead to negative consequences. Stoicism has been linked to help-seeking delays, inadequate pain treatment, caregiver strain and suicide after economic stress...
November 14, 2017: BMJ Open
https://www.readbyqxmd.com/read/29104146/mlkl-pitp%C3%AE-signaling-mediated-necroptosis-contributes-to-cisplatin-triggered-cell-death-in-lung-cancer-a549-cells
#10
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...
February 1, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29061850/the-brucella-effector-protein-tcpb-induces-degradation-of-inflammatory-caspases-and-thereby-subverts-non-canonical-inflammasome-activation-in-macrophages
#11
Padmaja Jakka, Swapna Namani, Subathra Murugan, Nivedita Rai, Girish Radhakrishnan
The inflammasome contains intracellular receptors that recognize various pathogen-associated molecular patterns and play crucial roles in innate immune responses to invading pathogens. Non-canonical inflammasome activation is mediated by caspase-4/11, which recognizes intracellular LPS and promotes pyroptosis and secretion of proinflammatory cytokines. Brucella species are infectious intracellular pathogens that replicate in professional and non-professional phagocytic cells and subvert immune responses for chronic persistence in the host...
December 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28916355/grouper-stat1a-is-involved-in-antiviral-immune-response-against-iridovirus-and-nodavirus-infection
#12
Jingcheng Zhang, Xiaohong Huang, Songwei Ni, Jiaxin Liu, Yin Hu, Ying Yang, Yepin Yu, Linli Zhou, Qiwei Qin, Youhua Huang
Signal Transducer and Activator of Transcription 1 (STAT1) has been demonstrated to function as a critical mediator in multiple cell processes, such as cell proliferation, cell death, and innate immune response. Interestingly, two orthologues of human STAT1, including STAT1a and STAT1b genes have been identified in different fish. However, the detailed roles of fish STAT1a in virus replication still remained largely uncertain. Here, we cloned a STAT1a from orange-spotted grouper Epinephelus coioides (EcSTAT1a) and characterized its roles during fish virus infection...
September 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28903783/the-purification-of-reduced-%C3%AE-2-glycoprotein-i-showed-its-native-activity-in-vitro
#13
Saijun Zhou, Ming Lu, Jiantong Zhao, Shuaihui Liu, Xin Li, Rui Zhang, Hongyan Liu, Pei Yu
BACKGROUND: New evidence has shown that reduced β2-glycoprotein I (β2GPI) has anti-oxidative stress and anti-inflammatory activity. However, the details are still poorly understood. This study aims to prepare stable reduced β2GPI with its native bioactivity in vitro. METHODS: Human β2GPI was purified from plasma first with perchloric acid precipitation and then purified with a series of chromatography methods including Sephadex G-25 desalting, SP HP, AF-heparin HC-650 M, and Sephacryl S-200...
September 13, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28867720/chronic-rapamycin-treatment-improved-metabolic-phenotype-but-inhibited-adipose-tissue-browning-in-high-fat-diet-fed-c57bl-6j-mice
#14
Yan Wang, Zhi He, Xianhui Li
Rapamycin (Rap) has been demonstrated to affect lipid metabolism through stimulating lipolysis, inhibiting de novo lipogenesis and reducing adiposity. In the present study, we investigated rapamycin exposure's influence on adipose tissue browning in high-fat diet-induced fatty mice. Four-week old C57BL/6J mice were fed normal chow or high-fat diet for a period of 6 weeks and then divided into three groups: (1) Nor group: mice fed with normal chow; (2) high fat diet (HFD) group: fatty mice fed with high-fat diet; (3) Rap group: high-fat diet-fed fatty mice treated intragastrically with rapamycin at a dose of 2...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28821620/arjunolic-acid-a-peroxisome-proliferator-activated-receptor-%C3%AE-agonist-regresses-cardiac-fibrosis-by-inhibiting-non-canonical-tgf-%C3%AE-signaling
#15
Trisha Bansal, Emeli Chatterjee, Jasdeep Singh, Arjun Ray, Bishwajit Kundu, V Thankamani, Shantanu Sengupta, Sagartirtha Sarkar
Cardiac hypertrophy and associated heart fibrosis remain a major cause of death worldwide. Phytochemicals have gained attention as alternative therapeutics for managing cardiovascular diseases. These include the extract from the plant Terminalia arjuna, which is a popular cardioprotectant and may prevent or slow progression of pathological hypertrophy to heart failure. Here, we investigated the mode of action of a principal bioactive T. arjuna compound, arjunolic acid (AA), in ameliorating hemodynamic load-induced cardiac fibrosis and identified its intracellular target...
October 6, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28821283/gene-expression-profiling-of-idiopathic-interstitial-pneumonias-iips-identification-of-potential-diagnostic-markers-and-therapeutic-targets
#16
Yasushi Horimasu, Nobuhisa Ishikawa, Masaya Taniwaki, Kakuhiro Yamaguchi, Kosuke Hamai, Hiroshi Iwamoto, Shinichiro Ohshimo, Hironobu Hamada, Noboru Hattori, Morihito Okada, Koji Arihiro, Yuji Ohtsuki, Nobuoki Kohno
BACKGROUND: Chronic fibrosing idiopathic interstitial pneumonia (IIP) is characterized by alveolar epithelial damage, activation of fibroblast proliferation, and loss of normal pulmonary architecture and function. This study aims to investigate the genetic backgrounds of IIP through gene expression profiling and pathway analysis, and to identify potential biomarkers that can aid in diagnosis and serve as novel therapeutic targets. METHODS: RNA extracted from lung specimens of 12 patients with chronic fibrosing IIP was profiled using Illumina Human WG-6 v3 BeadChips, and Ingenuity Pathway Analysis was performed to identify altered functional and canonical signaling pathways...
August 18, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28771803/a20-restores-phorbol-ester-induced-differentiation-of-thp-1-cells-in-the-absence-of-nuclear-factor-%C3%AE%C2%BAb-activation
#17
Miho Osako, Momoe Itsumi, Haruka Yamaguchi, Hiroaki Takeuchi, Shoji Yamaoka
A20, also referred to as tumor necrosis factor alpha (TNFα)-induced protein 3 (TNFAIP3), is an ubiquitin-editing enzyme whose expression is enhanced by NF-κB activation, and plays an important role in silencing NF-κB activity. Another well-known role for A20 is to protect cells from TNFα-induced apoptosis. Depletion of NF-κB in differentiating U937 monocytic leukemia cells is known to cause apoptotic cell death; however, much remains to be explored about the molecules that are expressed in an NF-κB-dependent manner and which support monocyte-macrophage differentiation...
February 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28724891/hypoxia-inducible-factor-1-alpha-is-involved-in-rip-induced-necroptosis-caused-by-in-vitro-and-in-vivo-ischemic-brain-injury
#18
Xiao-Sa Yang, Tai-Long Yi, Sai Zhang, Zhong-Wei Xu, Ze-Qi Yu, Hong-Tao Sun, Cheng Yang, Yue Tu, Shi-Xiang Cheng
Necroptosis, a novel type of programmed cell death, is involved in stroke-induced ischemic brain injury. Although studies have sought to explore the mechanisms of necroptosis, its signaling pathway has not yet to be completely elucidated. Thus, we used oxygen-glucose deprivation (OGD) and middle cerebral artery occlusion (MCAO) models mimicking ischemic stroke (IS) conditions to investigate mechanisms of necroptosis. We found that OGD and MCAO induced cell death, local brain ischemia and neurological deficit, while zVAD-fmk (zVAD, an apoptotic inhibitor), GSK'872 (a receptor interacting protein kinase-3 (RIP3) inhibitor), and combined treatment alleviated cell death and ischemic brain injury...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28690024/the-p53-gene-with-emphasis-on-its-paralogues-in-mosquitoes
#19
REVIEW
Tien-Huang Chen, Yi-Jun Wu, Jiun-Nan Hou, Cheng-Hsun Chiu, Wei-June Chen
The p53 gene is highly important in human cancers, as it serves as a tumor-suppressor gene. Subsequently, two p53 homologues, i.e., p73 and p63, with high identity of amino acids were identified, leading to construction of the p53 family. The p53 gene is highly important in human cancer because it usually transcribes genes that function by causing apoptosis in mammalian cells. In contrast, p63 and p73 tend to be more important in modulating development than inducing cell death, even though they share similar protein structures...
December 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28585198/fat-cell-and-fatty-acid-turnover-in-obesity
#20
REVIEW
Atilla Engin
The ratio of free fatty acid (FFA) turnover decreases significantly with the expansion of white adipose tissue. Adipose tissue and dietary saturated fatty acid levels significantly correlate with an increase in fat cell size and number. Inhibition of adipose triglyceride lipase leads to an accumulation of triglyceride, whereas inhibition of hormone-sensitive lipase leads to the accumulation of diacylglycerol. The G0/G1 switch gene 2 increases lipid content in adipocytes and promotes adipocyte hypertrophy through the restriction of triglyceride turnover...
2017: Advances in Experimental Medicine and Biology
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