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https://www.readbyqxmd.com/read/28241481/histone-h3-acetyl-k9-and-histone-h3-tri-methyl-k4-as-prognostic-markers-for-patients-with-cervical-cancer
#1
Susanne Beyer, Junyan Zhu, Doris Mayr, Christina Kuhn, Sandra Schulze, Simone Hofmann, Christian Dannecker, Udo Jeschke, Bernd P Kost
Chromatin remodeling alters gene expression in carcinoma tissue. Although cervical cancer is the fourth most common cancer in women worldwide, a systematic study about the prognostic value of specific changes in the chromatin structure, such as histone acetylation or histone methylation, is missing. In this study, the expression of histone H3 acetyl K9, which is known to denote active regions at enhancers and promoters, and histone H3 tri methyl K4, which preferentially identifies active gene promoters, were examined as both show high metastatic potential...
February 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28241067/cyclin-y-mediated-transcript-profiling-reveals-several-important-functional-pathways-regulated-by-cyclin-y-in-hippocampal-neurons
#2
I-Seul Joe, Jong-Hwan Kim, Hanna Kim, Jung-Hwa Hong, Mirang Kim, Mikyoung Park
Cyclin Y (CCNY), which is a cyclin protein known to play a role in cell division, is unexpectedly and thus interestingly expressed in non-proliferating neuronal cells. There have been only a few studies reporting the neuronal functions of CCNY in synapse remodeling and hippocampal long-term potentiation. Therefore, we here provide global and comprehensive information on the putative functions of CCNY in biological and functional pathways in neuronal systems. We adopted high-throughput RNA-sequencing technology for analyzing transcriptomes regulated by CCNY and utilized bioinformatics for identifying putative molecules, biological processes, and functional pathways that are possibly connected to CCNY functions in hippocampal neuronal cells of rats...
2017: PloS One
https://www.readbyqxmd.com/read/28240819/parkin-mediated-mitophagy-is-downregulated-in-browning-of-white-adipose-tissue
#3
David Taylor, Roberta A Gottlieb
OBJECTIVE: Browning of white adipose tissue (WAT) promotes increased energy expenditure through the action of uncoupling protein 1 (UCP1) and is an attractive target to promote weight loss in obesity. Lowering of mitochondrial membrane potential by UCP1 is uniquely beneficial in this context; in other tissues, reduced membrane potential promotes mitochondrial clearance via mitophagy. It is unknown how parkin-mediated mitophagy is regulated in beige adipocytes. METHODS: The relationship between parkin expression and WAT browning was investigated in 3T3-L1 adipocytes and parkin-deficient male C57BL/6 mice in response to pharmacological browning stimuli...
February 27, 2017: Obesity
https://www.readbyqxmd.com/read/28240653/paraspinal-muscle-passive-stiffness-remodels-in-direct-response-to-spine-stiffness-a-study-using-the-ent1-deficient-mouse
#4
Kelsey Y Gsell, Derek P Zwambag, Dale E Fournier, Cheryle A Séguin, Stephen H M Brown
STUDY DESIGN: Basic science study of the relationship between the structural properties of the spine and its surrounding musculature. OBJECTIVE: To determine if an increase in spine stiffness causes an inverse compensatory change in the passive stiffness of the adjacent paraspinal muscles. SUMMARY OF BACKGROUND DATA: Intervertebral disc degeneration causes an increase in multifidus passive stiffness; this was hypothesized to compensate for a decrease in spine stiffness associated with disc degeneration...
February 24, 2017: Spine
https://www.readbyqxmd.com/read/28240584/type-i-and-iii-collagen-turnover-is-increased-in-axial-spondyloarthritis-and-psoriatic-arthritis-associations-with-disease-activity-and-diagnostic-capacity
#5
Natasja Stæhr Gudmann, Anne Sofie Siebuhr, Anne Friesgaard Christensen, Leif Ejstrup, Grith Lykke Sørensen, Anne Gitte Loft, Morten Asser Karsdal, Anne-Christine Bay-Jensen, Heidi Lausten Munk, Peter Junker
OBJECTIVES: To investigate the turnover of type I and III collagen by neo-epitope markers in patients with axial spondyloarthritis (axSpA) and psoriatic arthritis (PsA). METHODS: Patients with PsA (n=101) or axSpA (n=110) and healthy subjects (n=120) were included. Demographic and clinical data were recorded. Markers of type I and III collagen were quantified by RIA (ICTP) or ELISA (C1M and C3M). Non-parametric statistics were applied for intergroup comparisons and correlation studies...
February 24, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28240368/extensive-remineralization-of-large-pelvic-lytic-lesions-following-total-therapy-treatment-in-patients-with-multiple-myeloma
#6
Meera Mohan, Rohan S Samant, Donghoon Yoon, Amy F Buros, Antonio Branca, Corey O Montgomery, Richard Nicholas, Larry J Suva, Roy Morello, Sharmilan Thanendrarajan, Carolina Schinke, Shmuel Yaccoby, Frits van Rhee, Faith E Davies, Gareth J Morgan, Maurizio Zangari
Osteolytic bone lesions are a hallmark of multiple myeloma bone disease. Bone destruction is associated with severely imbalanced bone remodeling, secondary to increased osteoclastogenesis and significant osteoblast suppression. Lytic lesions of the pelvis are relatively common in MM patients and are known to contribute to the increased morbidity due to the high risk of fracture that frequently demands extensive surgical intervention.After observing unexpected radiological improvement in serial large pelvic CT assessment in a patient treated in a total therapy protocol, the radiographic changes of pelvic osteolytic lesions by CT/PET scanning in patients who received total therapy 4 treatment for myeloma were retrospectively analyzed...
February 27, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28240263/mir-21-deficiency-inhibits-osteoclast-function-and-prevents-bone-loss-in-mice
#7
Cheng-Hu Hu, Bing-Dong Sui, Fang-Ying Du, Yi Shuai, Chen-Xi Zheng, Pan Zhao, Xiao-Rui Yu, Yan Jin
MicroRNAs emerge as critical post-transcriptional regulators in bone metabolism. We have previously reported in vitro that miR-21 promotes osteogenesis, while studies have also revealed miR-21 as a regulator of osteoclastogenesis and a promoter of osteoclast differentiation in vitro. However, in vivo data are still lacking in identifying skeletal function of miR-21, particularly its effects on osteoporosis. Here, using miR-21 knockout (miR-21(-/-)) mice, we investigated effects of miR-21 on bone development, bone remodeling and bone loss...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28240253/proteomic-analysis-of-the-mediator-complex-interactome-in-saccharomyces-cerevisiae
#8
Henriette Uthe, Jens T Vanselow, Andreas Schlosser
Here we present the most comprehensive analysis of the yeast Mediator complex interactome to date. Particularly gentle cell lysis and co-immunopurification conditions allowed us to preserve even transient protein-protein interactions and to comprehensively probe the molecular environment of the Mediator complex in the cell. Metabolic (15)N-labeling thereby enabled stringent discrimination between bona fide interaction partners and nonspecifically captured proteins. Our data indicates a functional role for Mediator beyond transcription initiation...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28240169/epigenetic-modulation-using-small-molecules-targeting-histone-acetyltransferases-in-disease
#9
André Richters, Angela N Koehler
Histone acetyltransferases (HATs) are epigenetic drivers that catalyze the acetyl transfer from acetyl-CoA to lysines of both histone and non-histone substrates and thereby induce transcription either by chromatin remodeling or direct transcription factor activation. Histone deacetylases (HDACs) conduct the reverse reaction to counter HAT activity. Physiological processes such as cell cycle progression or apoptosis require a thoroughly balanced equilibrium of the interplay between acetylation and deacetylation processes to maintain or, if required, alter the global acetylome status...
February 23, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28239848/protein-phosphatase-2a-pp2a-regulation-of-markers-of-extracellular-matrix-remodelling-in-hcc-cells-functional-consequences-for-tumour-invasion
#10
M P Ward, J P Spiers
BACKGROUND AND PURPOSE: A hallmark of tumour invasion is breakdown of the extracellular matrix as a consequence of dysregulation of the MMP system. While our understanding of how this is regulated by kinase signalling pathways is well established, its counter-regulation by protein phosphatases is less well known. Therefore, we investigated the effect of inhibition of protein phosphatases on markers of extracellular remodelling and how PP2A modulates MMP-9 abundance and function of Hep3B cells...
February 27, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28239825/upregulated-serum-sclerostin-level-in-the-t2dm-patients-with-femur-fracture-inhibits-the-expression-of-bone-formation-remodeling-associated-biomarkers-via-antagonizing-wnt-signaling
#11
Y Wu, S-Y Xu, S-Y Liu, L Xu, S-Y Deng, Y-B He, S-C Xian, Y-H Liu, G-X Ni
OBJECTIVE: Bone formation/remodeling-associated biomarkers, such as osteocalcin, amino pro-peptide of type 1 collagen (P1NP) and CrossLaps (CTX) have been deregulated in type 2 diabetes mellitus (T2DM) patients. In particular, the T2DM-associated sclerostin markedly inhibits the bone formation, suppresses the osteoblast activity and downregulates the bone turnover. PATIENTS AND METHODS: In the present study, we examined the serum levels of sclerostin, osteocalcin, P1NP and CTX in the T2DM patients...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28239748/%C3%AE-synuclein-s-uniquely-long-amphipathic-helix-enhances-its-membrane-binding-and-remodeling-capacity
#12
Anthony R Braun, Michael M Lacy, Vanessa C Ducas, Elizabeth Rhoades, Jonathan N Sachs
α-Synuclein is the primary protein found in Lewy bodies, the protein and lipid aggregates associated with Parkinson's disease and Lewy body dementia. The protein folds into a uniquely long amphipathic α-helix (AH) when bound to a membrane, and at high enough concentrations, it induces large-scale remodeling of membranes (tubulation and vesiculation). By engineering a less hydrophobic variant of α-Synuclein, we previously showed that the energy associated with binding of α-Synuclein's AH correlates with the extent of membrane remodeling (Braun et al...
February 26, 2017: Journal of Membrane Biology
https://www.readbyqxmd.com/read/28239646/mammary-adipocytes-stimulate-breast-cancer-invasion-through-metabolic-remodeling-of-tumor-cells
#13
Yuan Yuan Wang, Camille Attané, Delphine Milhas, Béatrice Dirat, Stéphanie Dauvillier, Adrien Guerard, Julia Gilhodes, Ikrame Lazar, Nathalie Alet, Victor Laurent, Sophie Le Gonidec, Denis Biard, Caroline Hervé, Frédéric Bost, Guo Sheng Ren, Françoise Bono, Ghislaine Escourrou, Marc Prentki, Laurence Nieto, Philippe Valet, Catherine Muller
In breast cancer, a key feature of peritumoral adipocytes is their loss of lipid content observed both in vitro and in human tumors. The free fatty acids (FFAs), released by adipocytes after lipolysis induced by tumor secretions, are transferred and stored in tumor cells as triglycerides in lipid droplets. In tumor cell lines, we demonstrate that FFAs can be released over time from lipid droplets through an adipose triglyceride lipase-dependent (ATGL-dependent) lipolytic pathway. In vivo, ATGL is expressed in human tumors where its expression correlates with tumor aggressiveness and is upregulated by contact with adipocytes...
February 23, 2017: JCI Insight
https://www.readbyqxmd.com/read/28239561/regulation-of-cardiac-cacnb2-by-microrna-499-potential-role-in-atrial-fibrillation
#14
Tian-You Ling, Xiao-Li Wang, Qiang Chai, Tong Lu, John M Stulak, Lyle D Joyce, Richard C Daly, Kevin L Greason, Li-Qun Wu, Win-Kuang Shen, Yong-Mei Cha, Hon-Chi Lee
The L-type calcium channel (LTCC) is one of the major ion channels that are known to be associated with the electrical remodeling of atrial fibrillation (AF). In AF, there is significant downregulation of the LTCC, but the underlying mechanism for such downregulation is not clear. We have previously reported that microRNA-499 (miR-499) is significantly upregulated in patients with permanent AF and that KCNN3, the gene that encodes the small-conductance calcium-activated potassium channel 3 (SK3), is a target of miR-499...
June 2017: BBA Clinical
https://www.readbyqxmd.com/read/28239515/reduced-interneuronal-dendritic-arborization-in-ca1-but-not-in-ca3-region-of-mice-subjected-to-chronic-mild-stress
#15
Javier Gilabert-Juan, Clara Bueno-Fernandez, Esther Castillo-Gomez, Juan Nacher
INTRODUCTION: Chronic stress induces dendritic atrophy and decreases spine density in excitatory hippocampal neurons, although there is also ample evidence indicating that the GABAergic system is altered in the hippocampus after this aversive experience. Chronic stress causes dendritic remodeling both in excitatory neurons and interneurons in the medial prefrontal cortex and the amygdala. METHODS: In order to know whether it also has an impact on the structure and neurotransmission of hippocampal interneurons, we have analyzed the dendritic arborization, spine density, and the expression of markers of inhibitory synapses and plasticity in the hippocampus of mice submitted to 21 days of mild restrain stress...
February 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28239357/increased-cell-proliferation-and-gene-expression-of-genes-related-to-bone-remodeling-cell-adhesion-and-collagen-metabolism-in-the-periodontal-ligament-of-unopposed-molars-in-growing-rats
#16
Domna Dorotheou, Vassiliki Farsadaki, Marie-Luce Bochaton-Piallat, Catherine Giannopoulou, Thanos D Halazonetis, Stavros Kiliaridis
Tooth eruption, the process by which teeth emerge from within the alveolar bone into the oral cavity, is poorly understood. The post-emergent phase of tooth eruption continues throughout life, in particular, if teeth are not opposed by antagonists. The aim of the present study was to better understand the molecular processes underlying post-emergent tooth eruption. Toward this goal, we removed the crowns of the maxillary molars on one side of the mouth of 14 young rats and examined gene expression patterns in the periodontal ligaments (PDLs) of the ipsilateral and contralateral mandibular molars, 3 and 15 days later...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28239158/synthesis-of-the-novel-parp-1-inhibitor-ag-690-11026014-and-its-protective-effects-on-angiotensin-ii-induced-mouse-cardiac-remodeling
#17
Guo-Shuai Feng, Cui-Ge Zhu, Zhuo-Ming Li, Pan-Xia Wang, Yi Huang, Min Liu, Ping He, Lan-Lan Lou, Shao-Rui Chen, Pei-Qing Liu
We previously identified AG-690/11026014 (6014) as a novel poly(ADP-ribose) polymerase-1 (PARP-1) inhibitor that effectively prevented angiotensin II (Ang II)-induced cardiomyocyte hypertrophy. In the present study, we reported a new synthesis route for 6014, and investigated its protective effects on Ang II-induced cardiac remodeling and cardiac dysfunction and the underlying mechanisms in mice. We designed a new synthesis route to obtain a sufficient quantity of 6014 for this in vivo study. C57BL/6J mice were infused with Ang II and treated with 6014 (10, 30, 90 mg·kg(-1)·d(-1), ig) for 4 weeks...
February 27, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28239053/transforming-growth-factor-beta-and-forkhead-box-o-transcription-factors-as-cardiac-fibroblast-regulators
#18
Ignacio Norambuena-Soto, Constanza Núñez-Soto, Fernanda Sanhueza-Olivares, Nicole Cancino-Arenas, David Mondaca-Ruff, Raul Vivar, Guillermo Díaz-Araya, Rosemarie Mellado, Mario Chiong
Fibroblasts play several homeostatic roles, including electrical coupling, paracrine signaling and tissue repair after injury. Fibroblasts have low secretory activity. However, in response to injury, they differentiate to myofibroblasts. These cells have an increased extracellular matrix synthesis and secretion, including collagen fibers, providing stiffness to the tissue. In pathological conditions myofibroblasts became resistant to apoptosis, remaining in the tissue, causing excessive extracellular matrix secretion and deposition, which contributes to the progressive tissue remodeling...
February 24, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/28238941/theoretical-and-practical-aspects-of-using-fetal-fibroblasts-for-skin-regeneration
#19
REVIEW
Meirong Li, Yali Zhao, Haojie Hao, Weidong Han, Xiaobing Fu
Cutaneous wounding in late-gestational fetal or postnatal humans results in scar formation without any skin appendages. Early or mid- gestational skin healing in humans is characterized by the absence of scaring in a process resembling regeneration. Tremendous cellular and molecular mechanisms contribute to this distinction, and fibroblasts play critical roles in scar or scarless wound healing. This review discussed the different repair mechanisms involved in wound healing of fibroblasts at different developmental stages and further confirmed that fetal fibroblast transplantation resulted in reduced scar healing in vivo...
February 23, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28238923/outcome-after-endovascular-repair-of-subacute-type-b-aortic-dissection-a-combined-series-from-two-greek-centers
#20
Nikolaos Asaloumidis, Christos D Karkos, Georgios Trellopoulos, Konstantinos Konstantinidis, Ioakeim T Giagtzidis, Thomas E Kalogirou, Konstantinos O Papazoglou
AIM: To document the outcome following endovascular treatment of subacute type B aortic dissection (AD). METHODS: Between October 2000 and June 2014, 40 patients (33 men, mean age 65 [range 35-87] years) with type B AD underwent thoracic endovascular aortic repair (TEVAR) during the subacute phase (defined as 15-90 days from the onset of symptoms). Indications for intervention were acute aortic enlargement, resistant hypertension and/or intractable pain. The primary outcome was survival...
February 23, 2017: Annals of Vascular Surgery
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