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Clinical Science (1979-)

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https://www.readbyqxmd.com/read/28935810/sulfur-dioxide%C3%A2-suppresses-inflammatory-response-by-sulfenylating-nf-%C3%AE%C2%BAb-p65-at-cysteine-38-in-a-rat-model-of-acute-lung-injury
#1
Siyao Chen, Yaqian Huang, Zhiwei Liu, Wen Yu, Heng Zhang, Kun Li, Xiaoqi Yu, Chaoshu Tang, Bin Zhao, Junbao Du, Hongfang Jin
This study was designed to investigate whether endogenous sulfur dioxide (SO2) controlled pulmonary inflammation in a rat model of oleic acid (OA)-induced acute lung injury (ALI). In this model, adenovirus expressing aspartate aminotransferase (AAT) 1 was delivered to the lungs, and the levels of SO2 and pro-inflammatory cytokines in rat lung tissues were measured. In the human alveolar epithelial cell line A549, the nuclear translocation and DNA binding activities of wild-type (wt) and C38S NF-κB p65 were detected...
September 21, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28935809/intake-of-chocolate-liquor-increases-vascular-lesions-in-apoe-knockout-mice
#2
Narges Yazdekhasti, Corinna Brandsch, Frank Hirche, Julia Kühn, Anke Schloesser, Tuba Esatbeygolu, Patricia Huebbe, Sigfried Wolffram, Gerald Rimbach, Gabriele I Stangl
Cocoa polyphenols are thought to reduce the risk of cardiovascular diseases. Thus, cocoa-containing foods may have significant health benefits. Here, we studied the impact of chocolate liquor on vascular lesion development and plaque composition in a mouse model of atherosclerosis. Apolipoprotein E (apoE)-knockout mice were assigned to two groups and fed a Western diet that contained 250 g/kg of either chocolate liquor or a polyphenol-free isoenergetic control paste for 16 weeks. In addition to fat, protein and fibers, the chocolate liquor contained 2 g/kg of polyphenols...
September 21, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28923880/impact-of-liver-fat-on-the-differential-partitioning-of-hepatic-triacylglycerol-into-vldl-subclasses-on-high-and-low-sugar-diets
#3
A Margot Umpleby, Fariba Shojaee-Moradie, Barbara Fielding, Xuefei Li, Andrea Marino, Najlaa Alsini, Cheryl Isherwood, Nicola Jackson, Aryati Ahmad, Michael Stolinski, Julie Anne Lovegrove, Sigurd Johnsen, Jeewaka Mendis, John Wright, Malgorzata E Wilinska, Roman Hovorka, Jimmy Bell, Louise E Thomas, Gary Frost, Bruce Arthur Griffin
Dietary sugars are linked to the development of non-alcoholic fatty liver disease (NAFLD) and dyslipidaemia, but it is unknown if NAFLD itself influences the effects of sugars on plasma lipoproteins. To study this further, men with NAFLD (n=11) and low liver fat 'controls' (n= 14) were fed two iso-energetic diets, high or low in sugars (26% or 6% total energy) for 12 weeks, in a randomised, cross-over design. Fasting plasma lipid and lipoprotein kinetics were measured after each diet by stable isotope trace-labelling...
September 18, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28899902/pharmacological-inhibition-of-protein-tyrosine-phosphatase-1b-ptp1b-protects-against-atherosclerotic-plaque-formation-in-the-ldlr-mouse-model-of-atherosclerosis
#4
Dawn Thompson, Nicola Morrice, Louise Grant, Samantha Le Sommer, Emma K Lees, Nimesh Mody, Heather M Wilson, Mirela Delibegovic
Cardiovascular disease (CVD) is the most prevalent cause of mortality among patients with Type 1 or Type 2 diabetes, due to accelerated atherosclerosis. Recent evidence suggests a strong link between atherosclerosis and insulin resistance, due to impaired insulin receptor (IR) signalling. Here we demonstrate that inhibiting the activity of protein tyrosine phosphatase 1B (PTP1B), the major negative regulator of the IR prevents and reverses atherosclerotic plaque formation in LDLR(-/-) mouse model of atherosclerosis...
September 12, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28864720/overexpression-of-trpc5-promotes-tumor-metastasis-via-the-hif-1%C3%AE-twist-signaling-pathway-in-colon-cancer
#5
Zhen Chen, Yaodan Zhu, Yongfei Dong, Peng Zhang, Xiping Han, Jian Jin, Xin Ma
In cancer cells, the intracellular Ca(2+) ([Ca(2+)]i) homeostasis is altered, and this is involved in tumor initiation, progression, and metastasis. However, little is known about the underlying mechanisms. Here, we report that transient receptor potential channel 5 (TrpC5), a receptor-activated non-selective Ca(2+) channel, is correlated with tumor metastasis in colon cancer patients. Moreover, in colon cancer cells, overexpression TrpC5 caused a robust [Ca(2+)]i rise, decreased E-cadherin, and increased mesenchymal biomarker expression, then promoted cell migration, invasion, and proliferation...
September 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28827396/genetic-diagnosis-of-polycystic-kidney-disease-alport-syndrome-and-thalassemia-minor-in-a-large-chinese-family
#6
Yun Miao, Jun Xiong, Xuelian Zhang, Huajie Huang, Lixin Yu, Jianfan Chen, Wenfeng Deng, Huiling Xu, Rumin Liu, Chenglin Xiang, Xiangmin Xu, Fu Xiong
Background : Polycystic kidney disease (PKD) and Alport syndrome (AS) are serious inherited disorders associated with renal disease, and thalassemia is a hereditary blood disease with a high prevalence in south China. Here, we report an exceptional PKD coincidence of thalassemia minor and AS (diagnosed genetically) in a large Chinese family. Methods : Whole genome next-generation sequencing (NGS) was performed on the proband and all family members underwent clinical evaluations. Sanger sequencing was used to validate the mutations distinguished by NGS...
August 21, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28754745/cardiovascular-susceptibility-to-in-vivo-ischemic-myocardial-injury-in-male-and-female-rat-offspring-exposed-to-prenatal-hypoxia
#7
Amin Shah, Nobutoshi Matsumura, Anita Quon, Jude Sally Morton, Jason Dyck, Sandra Thomas Davidge
Intrauterine growth restriction following prenatal hypoxia exposure leads to a higher risk of developing cardiovascular disease in later life. Our aim was to evaluate cardiac susceptibility and its pathophysiological mechanisms following acute myocardial infarction (MI) in adult rat offspring exposed to prenatal hypoxia. Male and female rat offspring which experienced normoxia (21% O2) or hypoxia (11% O2) in utero underwent sham or MI surgery at 12 weeks of age. Echocardiographic data revealed that both sexes had systolic dysfunction following MI surgery, independent of prenatal hypoxia...
July 28, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28743735/lilrb4-deficiency-aggravates-the-development-of-atherosclerosis-and-plaque-instability-by-increasing-the-macrophage-inflammatory-response-via-nf-%C3%AE%C2%BAb-signaling
#8
Zhou Jiang, Juan-Juan Qin, Yaxing Zhang, Wen-Lin Cheng, Yan-Xiao Ji, Fu-Han Gong, Xue-Yong Zhu, Yan Zhang, Zhi-Gang She, Zan Huang, Hongliang Li
Atherosclerosis is a chronic inflammatory disease. LILRB4 is associated with the pathological processes of various inflammatory diseases. However, the potential function and underlying mechanisms of LILRB4 in atherogenesis remain to be investigated. In this study, LILRB4 expression was examined in both human and mouse atherosclerotic plaques. The effects and possible mechanisms of LILRB4 in atherogenesis and plaque instability were evaluated in LILRB4(-/-)ApoE(-/-) and ApoE(-/-) mice fed a high-fat diet. We found that LILRB4 was located primarily in macrophages, and its expression was up-regulated in atherosclerotic lesions from human coronary arteries and mouse aortic roots...
July 25, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28912356/biomarkers-of-disease-can-be-detected-in-mice-as-early-as-4-weeks-after-initiation-of-exposure-to-third-hand-smoke-levels-equivalent-to-those-found-in-homes-of-smokers
#9
Neema Adhami, Yuxin Chen, Manuela Martins-Green
Third-hand smoke (THS) is a newly discovered environmental health hazard that results from accumulation and aging of second-hand smoke (SHS) toxins on surfaces where smoking has occurred. Our objective was to determine whether there is a time-dependent effect of THS exposure on health. Using an in vivo exposure mouse system that mimics exposure of humans to THS, we investigated its effects on biomarkers found in serum, and in liver and brain tissues. Mice were exposed to THS for 1, 2, 4, or 6 months and brain, liver, and serum were collected...
October 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28870982/understanding-the-effect-of-corticosteroid-pretreatment-in-brain-dead-organ-donors-new-mechanistic-insights-for-improvement-of-organ-quality-in-liver-transplantation
#10
Carola Dahrenmöller, Raymond Reding
Transplant surgeons are currently faced with the challenge to accept marginal liver transplants due to steatosis or old age. Improving organ quality by implementing a selective organ protective donor management could be the first step towards a graft of enhanced quality. However, the molecular mechanisms of such treatments are still poorly understood. Glucocorticoid medication in donor medicine has been carried out and discussed for a long time. In a recent study published in Clinical Science, Jiménez-Castro et al...
September 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28842527/mechanisms-contributing-to-cardiac-remodelling
#11
REVIEW
Qing-Qing Wu, Yang Xiao, Yuan Yuan, Zhen-Guo Ma, Hai-Han Liao, Chen Liu, Jin-Xiu Zhu, Zheng Yang, Wei Deng, Qi-Zhu Tang
Cardiac remodelling is classified as physiological (in response to growth, exercise and pregnancy) or pathological (in response to inflammation, ischaemia, ischaemia/reperfusion (I/R) injury, biomechanical stress, excess neurohormonal activation and excess afterload). Physiological remodelling of the heart is characterized by a fine-tuned and orchestrated process of beneficial adaptations. Pathological cardiac remodelling is the process of structural and functional changes in the left ventricle (LV) in response to internal or external cardiovascular damage or influence by pathogenic risk factors, and is a precursor of clinical heart failure (HF)...
September 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28811386/trimetazidine-protects-retinal-ganglion-cells-from-acute-glaucoma-via-the-nrf2-ho-1-pathway
#12
Peixing Wan, Wenru Su, Yingying Zhang, Zhidong Li, Caibin Deng, Yehong Zhuo
Acute glaucoma is one of the leading causes of irreversible vision impairment characterized by the rapid elevation of intraocular pressure (IOP) and consequent retinal ganglion cell (RGC) death. Oxidative stress and neuroinflammation have been considered critical for the pathogenesis of RGC death in acute glaucoma. Trimetazidine (TMZ), an anti-ischemic drug, possesses antioxidative and anti-inflammatory properties, contributing to its therapeutic potential in tissue damage. However, the role of TMZ in acute glaucoma and the underlying molecular mechanisms remain elusive...
September 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28811385/circulating-mir-200c-is-up-regulated-in-paediatric-patients-with-familial-hypercholesterolaemia-and-correlates-with-mir-33a-b-levels-implication-of-a-zeb1-dependent-mechanism
#13
Marco D'Agostino, Francesco Martino, Sara Sileno, Francesco Barillà, Sara Beji, Lorenza Marchetti, Fabio Maria Gangi, Luca Persico, Mario Picozza, Anna Montali, Eliana Martino, Cristina Zanoni, Daniele Avitabile, Sandro Parrotto, Maurizio Colognesi Capogrossi, Alessandra Magenta
Hypercholesterolaemia provokes reactive oxygen species (ROS) increase and is a major risk factor for cardiovascular disease (CVD) development. We previously showed that circulating miR-33a/b expression levels were up-regulated in children with familial hypercholesterolaemia (FH). miR-33a/b control cholesterol homoeostasis and recently miR-33b has been demonstrated to directly target the transcription factor zinc finger E-box-binding homeobox 1 (ZEB1). The latter acts in a negative feedback loop with the miR-200 family...
September 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28779028/aspirin-triggered-resolvin-d1-reduces-pneumococcal-lung-infection-and-inflammation-in-a-viral-and-bacterial-coinfection-pneumonia-model
#14
Hao Wang, Desiree Anthony, Selcuk Yatmaz, Odilia Wijburg, Catherine Satzke, Bruce Levy, Ross Vlahos, Steven Bozinovski
Formyl peptide receptor 2/lipoxin A4 (LXA4) receptor (Fpr2/ALX) co-ordinates the transition from inflammation to resolution during acute infection by binding to distinct ligands including serum amyloid A (SAA) and Resolvin D1 (RvD1). Here, we evaluated the proresolving actions of aspirin-triggered RvD1 (AT-RvD1) in an acute coinfection pneumonia model. Coinfection with Streptococcus pneumoniae and influenza A virus (IAV) markedly increased pneumococcal lung load and neutrophilic inflammation during the resolution phase...
September 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28768794/embryonic-stem-cell-derived-germ-cells-induce-spermatogenesis-after-transplantation-into-the-testes-of-an-adult-mouse-azoospermia-model
#15
Zohreh Makoolati, Mansoureh Movahedin, Mehdi Forouzandeh-Moghadam, Majid Naghdi, Morteza Koruji
The present study aimed to: (i) identify the exogenous factors that allow in vitro differentiation of mouse spermatogonial stem cells (SSCs) from embryonic stem cells (ESCs); (ii) evaluate the effects of Sertoli cells in SSC enrichment; and (iii) assess the success of transplantation using in vitro differentiated SSCs in a mouse busulfan-treated azoospermia model. A 1-day-old embryoid body (EB) received 5 ng/ml of bone morphogenetic protein 4 (BMP4) for 4 days, 3 µM retinoic acid (RA) in a SIM mouse embryo-derived thioguanine and ouabain resistant (STO) co-culture system for 7 days, and was subsequently co-cultured for 2 days with Sertoli cells in the presence or absence of a leukaemia inhibitory factor (LIF), basic fibroblast growth factor (bFGF) and RA composition, and in the presence of these factors in simple culture medium...
September 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28798077/cardiovascular-susceptibility-to-in-vivo-ischemic-myocardial-injury-in-male-and-female-rat-offspring-exposed-to-prenatal-hypoxia
#16
Amin Shah, Nobutoshi Matsumura, Anita Quon, Jude S Morton, Jason R B Dyck, Sandra T Davidge
Intrauterine growth restriction (IUGR) following prenatal hypoxia exposure leads to a higher risk of developing cardiovascular disease (CVD) in later life. Our aim was to evaluate cardiac susceptibility and its pathophysiological mechanisms following acute myocardial infarction (MI) in adult rat offspring exposed to prenatal hypoxia. Male and female rat offspring, which experienced normoxia (21% O2) or hypoxia (11% O2) in utero underwent sham or MI surgery at 12 weeks of age. Echocardiographic data revealed that both sexes had systolic dysfunction following MI surgery, independent of prenatal hypoxia...
September 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28798076/perivascular-spaces-glymphatic-dysfunction-and-small-vessel-disease
#17
REVIEW
Humberto Mestre, Serhii Kostrikov, Rupal I Mehta, Maiken Nedergaard
Cerebral small vessel diseases (SVDs) range broadly in etiology but share remarkably overlapping pathology. Features of SVD including enlarged perivascular spaces (EPVS) and formation of abluminal protein deposits cannot be completely explained by the putative pathophysiology. The recently discovered glymphatic system provides a new perspective to potentially address these gaps. This work provides a comprehensive review of the known factors that regulate glymphatic function and the disease mechanisms underlying glymphatic impairment emphasizing the role that aquaporin-4 (AQP4)-lined perivascular spaces (PVSs), cerebrovascular pulsatility, and metabolite clearance play in normal CNS physiology...
September 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28798075/cytokines-of-the-il-1-family-recognized-targets-in-chronic-inflammation-underrated-in-organ-transplantations
#18
REVIEW
Ilja Striz
Interleukin 1 (IL-1) family is a group of cytokines with multiple local and systemic effects, which regulates both innate and adaptive immune responses. Generally, most IL-1 family cytokines express prevailing pro-inflammatory activities (IL-1α, IL-1β, IL-18, IL-33, IL-36 α, β, γ), whereas others are anti-inflammatory (IL-1Ra (IL-1 receptor antagonist), IL-36Ra, IL-38, IL-37). In addition to their immunomodulatory roles, some of them are also involved in the physiological modulation of homeostatic processes and directly affect mRNA transcription...
September 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28798074/the-influence-of-prenatal-exercise-and-pre-eclampsia-on-maternal-vascular-function
#19
REVIEW
Rachel J Skow, Emily C King, Craig D Steinback, Margie H Davenport
During healthy pregnancy, the cardiovascular system undergoes diverse adaptations to support adequate transfer of oxygen and nutrients from mother to fetus. In order to accommodate the large expansion of blood volume and associated cardiac output, the structure, mechanics, and function of the arteries are altered. Specifically, in healthy pregnancy there is a remodeling of arteries (increased angiogenesis and vasodilation), a generalized reduction in arterial stiffness (increased compliance), and an enhanced endothelial function...
September 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28798073/the-human-papillomavirus-replication-cycle-and-its-links-to-cancer-progression-a-comprehensive-review
#20
REVIEW
Sheila V Graham
HPVs (human papillomaviruses) infect epithelial cells and their replication cycle is intimately linked to epithelial differentiation. There are over 200 different HPV genotypes identified to date and each displays a strict tissue specificity for infection. HPV infection can result in a range of benign lesions, for example verrucas on the feet, common warts on the hands, or genital warts. HPV infects dividing basal epithelial cells where its dsDNA episomal genome enters the nuclei. Upon basal cell division, an infected daughter cell begins the process of keratinocyte differentiation that triggers a tightly orchestrated pattern of viral gene expression to accomplish a productive infection...
September 1, 2017: Clinical Science (1979-)
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