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https://www.readbyqxmd.com/read/28190758/intercellular-signalling-cross-talk-to-kill-to-heal-and-to-rejuvenate
#1
REVIEW
Egor Y Plotnikov, Denis N Silachev, Vasily A Popkov, Ljubava D Zorova, Irina B Pevzner, Savva D Zorov, Stanislovas S Jankauskas, Valentina A Babenko, Gennady T Sukhikh, Dmitry B Zorov
Intercellular cross-talk is a fundamental process for spreading cellular signals between neighbouring and distant cells to properly regulate their metabolism, to coordinate homeostasis, adaptation and survival as a functional tissue and organ. In this review, we take a close molecular view of the underpinning molecular mechanisms of such complex intercellular communications. There are several studied forms of cell-to-cell communications considered crucial for the maintenance of multicellular organisms. The most explored is paracrine signalling which is realised through the release of diffusible signalling factors (e...
January 23, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28132853/research-opportunities-and-challenges-in-the-era-of-healthy-living-medicine-unlocking-the-potential
#2
REVIEW
Shane A Phillips, Sharon Martino, Ross Arena
Non-communicable diseases, such as cardiovascular disease (CVD), obesity, cancer, pulmonary disease, and diabetes are a very high global health concern. The health costs of risk factors for CVD, such as hypertension (HTN), is mounting and are unrelenting. As an example, it is estimated that direct and indirect costs due to HTN amounted to $46.4 billion in 2011 and projections of six-fold increases by 2030; the importance of low-cost nonpharmacological interventions involving collaborative teams of health care professionals is at a critical junction...
January 26, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/28130419/the-retinoic-acid-receptor-related-orphan-receptor-%C3%AE-positively-regulates-tight-junction-protein-claudin-domain-containing-1-mrna-expression-in-human-brain-endothelial-cells
#3
Hiroshi Matsuoka, Akiho Shima, Arisa Uda, Hirotaka Ezaki, Akihiro Michihara
Members of the claudin family play important roles in the formation of tight junctions (TJs) in several tissues. Claudin domain containing 1 (CLDND1) is homologous to this family and localizes to TJs and the cytoplasm when exogenously expressed in cultured epithelial cell lines. Furthermore, serum antibody levels of CLDND1-derived peptides are elevated in patients with cerebral infection, cardiovascular disease, or diabetes mellitus as compared to healthy controls. However, CLDND1 transcriptional regulation remains poorly analyzed and most regional transcription factor binding sites remain to be defined...
January 27, 2017: Journal of Biochemistry
https://www.readbyqxmd.com/read/28108330/pleiotropic-responses-to-methionine-restriction
#4
Gene P Ables, Jay E Johnson
Methionine restriction (MR) extends lifespan across different species. The main responses of rodent models to MR are well-documented in adipose tissue (AT) and liver, which have reduced mass and improved insulin sensitivity, respectively. Recently, molecular mechanisms that improve healthspan have been identified in both organs during MR. In fat, MR induced a futile lipid cycle concomitant with beige AT accumulation, producing elevated energy expenditure. In liver, MR upregulated fibroblast growth factor 21 and improved glucose metabolism in aged mice and in response to a high-fat diet...
January 17, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28108160/exposure-to-endosulfan-increases-endothelial-permeability-by-transcellular-and-paracellular-pathways-in-relation-to-cardiovascular-diseases
#5
Dan Xu, Tong Liu, Limei Lin, Shuai Li, Xiaoming Hang, Yeqing Sun
Exposure to environmental pollutants results in out-of-balance of vascular homeostasis. Endothelial dysfunction leads to a disruption of the endothelial permeability characteristics, associated with cardiovascular diseases. We previously reported that endosulfan could cause endothelial dysfunction, but the role of endosulfan in permeability of endothelial cells has been unexplored. To elucidate molecular mechanism of endosulfan-induced changes in endothelial permeability, human umbilical vein endothelial cells (HUVECs) were exposed to endosulfan, followed by endothelial permeability analysis...
January 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28094152/use-of-3d-printer-technology-to-facilitate-surgical-correction-of-a-complex-vascular-anomaly-with-esophageal-entrapment-in-a-dog
#6
A Dundie, G Hayes, P Scrivani, L Campoy, D Fletcher, K Ash, E Oxford, N S Moïse
A 10 week old female intact Staffordshire terrier was presented with a total of five congenital cardio-thoracic vascular anomalies consisting of a patent ductus arteriosus (PDA) with an aneurysmic dilation, pulmonic stenosis, persistent right aortic arch, aberrant left subclavian artery and persistent left cranial vena cava. These abnormalities were identified with a combination of echocardiogram and computed tomography angiography (CTA). The abnormalities were associated with esophageal entrapment, regurgitation, and volume overload of the left heart with left atrial and ventricular enlargement...
January 13, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28087602/novel-application-of-3d-contrast-enhanced-cmr-to-define-fibrotic-structure-of-the-human-sinoatrial-node-in-vivo
#7
Thomas A Csepe, Jichao Zhao, Lidiya V Sul, Yufeng Wang, Brian J Hansen, Ning Li, Anthony J Ignozzi, Anna Bratasz, Kimerly A Powell, Ahmet Kilic, Peter J Mohler, Paul M L Janssen, John D Hummel, Orlando P Simonetti, Vadim V Fedorov
AIMS: The adult human sinoatrial node (SAN) has a specialized fibrotic intramural structure (35-55% fibrotic tissue) that provides mechanical and electrical protection from the surrounding atria. We hypothesize that late gadolinium-enhanced cardiovascular magnetic resonance (LGE-CMR) can be applied to define the fibrotic human SAN structure in vivo. METHODS AND RESULTS: LGE-CMR atrial scans of healthy volunteers (n olu, 23-52 y.o.) using a 3 Tesla magnetic resonance imaging system with a spatial resolution of 1...
January 13, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28087519/sympathetic-modulation-of-electrical-activation-in-normal-and-infarcted-myocardium-implications-for-arrhythmogenesis
#8
Olujimi A Ajijola, Robert L Lux, Anadjeet Khahera, OhJin Kwon, Eric Aliotta, Daniel Ennis, Michael C Fishbein, Jeffrey Laurence Ardell, Kalyanam Shivkumar
: Background The influence of cardiac sympathetic innervation on electrical activation in normal and chronically infarcted ventricular myocardium is not understood. Methods and Results Yorkshire pigs with normal hearts (NL, n=12) or anterior myocardial infarction (MI, n=9) underwent high-resolution mapping of the anteroapical left ventricle, at baseline, and during left and right stellate ganglion stimulation (LSGS & RSGS, respectively). Conduction velocity (CV), activation times (AT), & directionality of propagation were measured...
January 13, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28057793/protein-interactions-at-endothelial-junctions-and-signaling-mechanisms-regulating-endothelial-permeability
#9
REVIEW
Yulia A Komarova, Kevin Kruse, Dolly Mehta, Asrar B Malik
The monolayer of endothelial cells lining the vessel wall forms a semipermeable barrier (in all tissue except the relatively impermeable blood-brain and inner retinal barriers) that regulates tissue-fluid homeostasis, transport of nutrients, and migration of blood cells across the barrier. Permeability of the endothelial barrier is primarily regulated by a protein complex called adherens junctions. Adherens junctions are not static structures; they are continuously remodeled in response to mechanical and chemical cues in both physiological and pathological settings...
January 6, 2017: Circulation Research
https://www.readbyqxmd.com/read/28038374/polycyclic-aromatic-hydrocarbons-connected-with-schiff-base-linkers-experimental-and-theoretical-photophysical-characterization-and-electrochemical-properties
#10
Danuta Sęk, Mariola Siwy, Jan Grzegorz Małecki, Sonia Kotowicz, Sylwia Golba, Elżbieta M Nowak, Jerzy Sanetra, Ewa Schab-Balcerzak
A series of polyaromatic hydrocarbons with anthracene, phenanthrene and pyrene units connected with Schiff base junctions were synthesized via condensation of p-phenylenediamine and hydrazine with selected aldehydes. The effect of both hydrocarbon structures and presence of N-N- or phenyl- linked diimines on properties of the prepared azines and azomethines was analyzed. The obtained compounds were soluble in common organic solvents and melted in the range of 226-317°C. Their photophysical and electrochemical properties were investigated by UV-vis, photoluminescence spectroscopies and cyclic voltammetry (CV), respectively...
March 15, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28029075/connexin43-and-myocardial-ischemia-reperfusion-injury
#11
Lingyun Zu, Ningxin Wen, Changjie Liu, Mingming Zhao, Lemin Zheng
The treatment and prevention of ischemic cardiomyopathy is one of the most concerned research points in cardiovascular field recently. Gap junction is the basic structure of cardiac electrophysiology, connexin is the basic unit of gap junctions, Connexin43(Cx43) is the most abundant member of Cx family in heart ,the normal expression of Cx43 is crucial for heart development,electrically coupled cardiomyocytes activities and the regulation of myocardial function. The connection between Cx43 and myocardial ischemia/reperfusion or reperfusion injury has become the current research focus...
December 27, 2016: Cardiovascular & Hematological Disorders Drug Targets
https://www.readbyqxmd.com/read/28011395/salvianolic-acid-a-ameliorates-the-integrity-of-blood-spinal-cord-barrier-via-mir-101-cul3-nrf2-ho-1-signaling-pathway
#12
De-Shui Yu, Yan-Song Wang, Yun-Long Bi, Zhan-Peng Guo, Ya-Jiang Yuan, Song-Ming Tong, Rui-Chao Su, Li-Hao Ge, Jian Wang, Ya-Li Pan, Ting-Ting Guan, Yang Cao
Salvianolic acid A (Sal A), a bioactive compound isolated from the Chinese medicinal herb Danshen, is used for the prevention and treatment of cardiovascular diseases. However, the protective function of Sal A on preserving the role of blood-spinal cord barrier (BSCB) after spinal cord injury (SCI) is unclear. The present study investigated the effects and mechanisms of Sal A (2.5, 5, 10 mg/kg, i.p.) on BSCB permeability at different time-points after compressive SCI in rats. Compared to the SCI group, treatment with Sal A decreased the content of the Evans blue in the spinal cord tissue at 24 h post-SCI...
December 20, 2016: Brain Research
https://www.readbyqxmd.com/read/27995452/an-optimal-approach-for-laparoscopic-d3-lymphadenectomy-plus-complete-mesocolic-excision-d3-cme-for-right-sided-colon-cancer
#13
Daxing Xie, Chaoran Yu, Chun Gao, Hasan Osaiweran, Junbo Hu, Jianping Gong
BACKGROUND: It is common knowledge that high ligation of blood vessels at the D3 level and complete mesocolic excision (CME) are two critical points of right hemicolectomy for right colon cancer (RCC). (1-5) To date, a safe strategy for completing these two procedures under laparoscopic surgery has not been extensively described. The authors provide a video to demonstrate laparoscopic right hemicolectomy (D3 + CME) with an optimal mesentery-defined approach. By identifying three "tri-junctions," this approach facilitates dissection of the entire mesocolon along the embryologic planes as far centrally as possible and enables the high tie of feeding vessels at bifurcation...
December 19, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27994169/subfunctionalization-of-paralogous-aryl-hydrocarbon-receptors-from-the-frog-xenopus-laevis-distinct-target-genes-and-differential-responses-to-specific-agonists-in-a-single-cell-type
#14
Scott H Freeburg, Eric Engelbrecht, Wade H Powell
Gene duplication confers genetic redundancy that can facilitate subfunctionalization, the partitioning of ancestral functions between paralogs. We capitalize on a recent genome duplication in Xenopus laevis (African clawed frog) to interrogate possible functional differentiation between alloalleles of the aryl hydrocarbon receptor (AHR), a ligand-activated transcription factor that mediates toxicity of dioxin-like compounds and plays a role in the physiology and development of the cardiovascular, hepatic, and immune systems in vertebrates...
February 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/27942761/hand1-loss-of-function-mutation-causes-tetralogy-of-fallot
#15
Juan Wang, Xiao-Qing Hu, Yu-Han Guo, Jian-Yun Gu, Jia-Hong Xu, Yan-Jie Li, Ning Li, Xiao-Xiao Yang, Yi-Qing Yang
As the most prevalent form of birth defect in humans worldwide, congenital heart disease (CHD) is responsible for substantial morbidity and is still the leading cause of birth defect-related demises. Increasing evidence demonstrates that genetic defects play an important role in the pathogenesis of CHD, and mutations in multiple genes, especially in those coding for cardiac core transcription factors, have been causally linked to various CHDs. Nevertheless, CHD is a genetically heterogeneous disease and the genetic determinants underpinning CHD in an overwhelming majority of patients remain elusive...
December 10, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27902691/do-vascular-networks-branch-optimally-or-randomly-across-spatial-scales
#16
Elif Tekin, David Hunt, Mitchell G Newberry, Van M Savage
Modern models that derive allometric relationships between metabolic rate and body mass are based on the architectural design of the cardiovascular system and presume sibling vessels are symmetric in terms of radius, length, flow rate, and pressure. Here, we study the cardiovascular structure of the human head and torso and of a mouse lung based on three-dimensional images processed via our software Angicart. In contrast to modern allometric theories, we find systematic patterns of asymmetry in vascular branching, potentially explaining previously documented mismatches between predictions (power-law or concave curvature) and observed empirical data (convex curvature) for the allometric scaling of metabolic rate...
November 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/27891026/anaesthesia-management-in-craniovertebral-junctional-anomalies
#17
REVIEW
Oswald Mascarenhas
Craniovertebral Junctional (CVJ) anomalies are developmental disorders that affect the skeleton and enclosed neuraxis at the junction of cranium and cervical spine. The high prevalence of airway obstruction and restrictive pulmonary disease in combination with cardiovascular manifestations poses a high anaesthetic risk to these patients. This article provides a discussion of management of anaesthesia in patients with craniovertebral anomalies, the evaluation of risk factors in these patients and their management, including emergency airway issues...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27867849/laparoscopic-transposition-of-lower-pole-crossing-vessels-vascular-hitch-in-children-with-pelviureteric-junction-obstruction
#18
Ciro Esposito, Cosimo Bleve, Maria Escolino, Paolo Caione, Simona Gerocarni Nappo, Alessandra Farina, Maria Grazia Caprio, Mariapina Cerulo, Angela La Manna, Salvatore Fabio Chiarenza
BACKGROUND: Congenital hydronephrosis due to intrinsic or extrinsic uretero-pelvic-junction (UPJ) obstruction (UPJO) is a common problem in childhood UPJO may be caused by intrinsic disorganization or by extrinsic compression from crossing vessels (CV); extrinsic causes usually present symptomatically in older children. This report the large Italian experience in the treatment of children with extrinsic-UPJO by CV. METHODS: We analyzed the data of 51 children (17 girls and 34 boys, median age 10, 7 years) affected by extrinsic-UPJO were treated in three Italian institutions with laparoscopic transposition of CV (Hellström Vascular Hitch modified by Chapman)...
October 2016: Translational pediatrics
https://www.readbyqxmd.com/read/27821716/postnatal-regulation-of-mamdc4-in-the-porcine-intestinal-epithelium-is-influenced-by-bacterial-colonization
#19
Alex J Pasternak, Glenn M Hamonic, Andrew Van Kessel, Heather L Wilson
The MAM domain-containing 4 (MAMDC4) protein is associated with the unique endocytotic mechanism observed in the intestine of mammals during the immediate postnatal period. Transcriptional expression of MAMDC4 was substantially upregulated at birth in both the piglet jejunum and ileum and its expression decreases after birth. The protein was found localized specifically to the apical region of the luminal epithelium, however, MAMDC4 protein expression was lost at day 10 and 15 in the jejunum and ileum, respectively, and was not associated with "fetal" enterocyte replacement...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27802415/genome-wide-and-gene-based-meta-analyses-identify-novel-loci-influencing-blood-pressure-response-to-hydrochlorothiazide
#20
Erika Salvi, Zhiying Wang, Federica Rizzi, Yan Gong, Caitrin W McDonough, Sandosh Padmanabhan, Timo P Hiltunen, Chiara Lanzani, Roberta Zaninello, Martina Chittani, Kent R Bailey, Antti-Pekka Sarin, Matteo Barcella, Olle Melander, Arlene B Chapman, Paolo Manunta, Kimmo K Kontula, Nicola Glorioso, Daniele Cusi, Anna F Dominiczak, Julie A Johnson, Cristina Barlassina, Eric Boerwinkle, Rhonda M Cooper-DeHoff, Stephen T Turner
This study aimed to identify novel loci influencing the antihypertensive response to hydrochlorothiazide monotherapy. A genome-wide meta-analysis of blood pressure (BP) response to hydrochlorothiazide was performed in 1739 white hypertensives from 6 clinical trials within the International Consortium for Antihypertensive Pharmacogenomics Studies, making it the largest study to date of its kind. No signals reached genome-wide significance (P<5×10(-)(8)), and the suggestive regions (P<10(-5)) were cross-validated in 2 black cohorts treated with hydrochlorothiazide...
January 2017: Hypertension
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