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https://www.readbyqxmd.com/read/29356444/physiological-plasticity-in-lizard-embryos-exposed-to-high-altitude-hypoxia
#1
Gerardo A Cordero, Bea Angelica Andersson, Jeremie Souchet, Gaëlle Micheli, Daniel W A Noble, Eric J Gangloff, Tobias Uller, Fabien Aubret
Coping with novel environments may be facilitated by plastic physiological responses that enable survival during environmentally sensitive life stages. We tested the capacity for embryos of the common wall lizard (Podarcis muralis) from low altitude to cope with low-oxygen partial pressure (hypoxia) in an alpine environment. Developing embryos subjected to hypoxic atmospheric conditions (15-16% O2 sea-level equivalent) at 2,877 m above sea level exhibited responses common to vertebrates acclimatized to or evolutionarily adapted to high altitude: suppressed metabolism, cardiac hypertrophy, and hyperventilation...
August 2017: Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology
https://www.readbyqxmd.com/read/29355441/ntprobnp-and-st2-as-predictors-for-all-cause-and-cardiovascular-mortality-in-elderly-patients-with-symptoms-suggestive-for-heart-failure
#2
Kurt Boman, Finn Thormark Fröst, Ann-Charlotte R Bergman, Mona Olofsson
BACKGROUND: A new biomarker, suppression of tumorigenicity 2 (ST2) has been introduced as a marker for fibrosis and hypertrophy. Its clinical value in comparison with NTproBNP in predicting mortality in elderly patients with symptoms of heart failure (HF) is still unclear. AIM: To evaluate the prognostic value for all-cause- and cardiovascular mortality of ST2 or NTproBNP and secondly; the combination of these biomarkers. PATIENTS AND METHODS: 170 patients with clinical symptoms of HF of whom 77 (45%) with verified HF were recruited from one selected primary health care centre (PHC) in Sweden and echocardiography was performed in all patients...
January 22, 2018: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/29355062/effects-of-gestational-and-pregestational-diabetes-mellitus-on-the-foetal-heart-a-cross-sectional-study
#3
Pinar Dervisoglu, Mustafa Kosecik, Serkan Kumbasar
We examined the foetal cardiac structural and functional characteristics in diabetic pregnancies versus non-diabetic, healthy pregnancies. Between August 2015 and April 2016, 32 pregnant women with pregestational diabetes, 36 pregnant women with gestational diabetes, and 42 healthy pregnant women were scheduled to have foetal echocardiograms to assess cardiac structure and function. In the diabetic groups, the foetal interventricular septum (IVS) thickness was significantly greater than in non-diabetics (p < ...
January 21, 2018: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29354880/endothelin-1-induced-hypertrophic-alterations-and-heme-oxygenase-1-expression-in-cardiomyoblasts-are-counteracted-by-beta-estradiol-in-vitro-and-in-vivo-studies
#4
Tunde Barta, Agnes Tosaki, David Haines, Gyorgy Balla, Istvan Lekli, Arpad Tosaki
Endothelin-1 (ET-1), a potent vasoconstrictor normally active in maintaining vascular tone, may mediate significant pathogenic effects, contributing to several serious diseases when aberrantly expressed or regulated. The present study evaluates the capacity of ET-1 to affect endothelin-1-associated hypertrophic activity and decreased expression of heme oxygenase-1 by H9c2 rat cardiomyoblasts in vitro, corresponding to in vivo processes underlying cardiovascular diseases (CVDs). Beta estradiol (β-E) is tested for its capacity to alter the effects of ET-1...
January 21, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29354759/a-rare-cause-of-late-onset-neurological-deficit-in-post-tuberculous-kyphotic-deformity-case-report
#5
Suresh Subramani, Ajoy Prasad Shetty, Rishi M Kanna, Shanmuganathan Rajasekaran
Late onset neurological deficit is a rare complication of spinal tuberculosis. Reactivation of the disease and compression by internal gibbus are the common causes for late onset neurological deficit. We report a rare cause of late onset paraplegia in a patient with post tubercular kyphotic deformity. The late onset neurological deficit was due to the adjacent segment degeneration proximal to the kyphotic deformity. Posterior hypertrophied ligamentum flavum and anterior disc osteophyte complex caused the cord compression...
December 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29354463/endoscopic-resection-of-peroneal-tubercle
#6
Tun Hing Lui
Symptomatic hypertrophy of the peroneal tubercle can result in pain, clicking sensation, and limitation of ambulation. Surgical resection is indicated for symptomatic hypertrophied tubercle that is recalcitrant to conservative treatment. The purpose of this Technical Note is to report the details of tendoscopic resection of the hypertrophied peroneal tubercle. This is performed through zone 2 peroneus longus tendoscopy. Any associated hindfoot deformity and peroneal tendon pathology should also be addressed...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29353241/inhibition-of-endothelial-notch-signaling-impairs-fatty-acid-transport-and-leads-to-metabolic-and-vascular-remodeling-of-the-adult-heart
#7
Markus Jabs, Adam J Rose, Lorenz H Lehmann, Jacqueline Taylor, Iris Moll, Tjeerd P Sijmonsma, Stefanie E Herberich, Sven W Sauer, Gernot Poschet, Giuseppina Federico, Carolin Mogler, Eva-Maria Weis, Hellmut G Augustin, Minhong Yan, Norbert Gretz, Roland M Schmid, Ralf H Adams, Hermann-Joseph Gröne, Rüdiger Hell, Jürgen G Okun, Johannes Backs, Peter P Nawroth, Stephan Herzig, Andreas Fischer
Background -Nutrients are transported through endothelial cells before being metabolized in muscle cells. However, little is known about the regulation of endothelial transport processes. Notch signaling is a critical regulator of metabolism and angiogenesis during development. Here, we studied how genetic and pharmacological manipulation of endothelial Notch signaling in adult mice affects endothelial fatty acid transport, cardiac angiogenesis, and heart function. Methods -Endothelial-specific Notch inhibition was achieved by conditional genetic inactivation of Rbp-jκ in adult mice to analyze fatty acid metabolism and heart function...
January 20, 2018: Circulation
https://www.readbyqxmd.com/read/29353047/clinical-profile-of-nonresponders-to-surgical-myectomy-with-obstructive-hypertrophic-cardiomyopathy
#8
Sophie Wells, Ethan J Rowin, Griffin Boll, Hassan Rastegar, Wendy Wang, Martin S Maron, Barry J Maron
BACKGROUND: In the vast majority of patients with obstructive hypertrophic cardiomyopathy and drug-refractory heart failure, surgical myectomy results in reversal of heart failure symptoms. However, a small patient subgroup fails to experience sustained postoperative improvement despite relief of left ventricular outflow obstruction. Clinical profile of such patients has not been well defined. METHODS: Consecutive obstructive hypertrophic cardiomyopathy patients undergoing myectomy at Tufts Medical Center for drug refractory NYHA III/IV heart failure symptoms, 2004 to 2017, were followed postoperatively for 2...
January 15, 2018: American Journal of Medicine
https://www.readbyqxmd.com/read/29352146/effects-of-renal-denervation-on-cardiac-structural-and-functional-abnormalities-in-patients-with-resistant-hypertension-or-diastolic-dysfunction
#9
Shiying Wang, Suxia Yang, Xinxin Zhao, Jun Shi
The aim of the present study is to systematically evaluate the impact of RDN on cardiac structure and function in patients with resistant hypertension (RH) or diastolic dysfunction. We retrieved Pubmed, Embase and Cocharane Library databases, from inception to April 1st, 2016. Studies reporting left ventricular mass (LVMI) or left ventricular (LV) diastolic function (reflected by the ratio of mitral inflow velocity to annular relaxation velocity [E/e']) responses to RDN were included. Two randomized controlled trials (RCTs), 3 controlled studies and 11 uncontrolled studies were finally identified...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351853/cardiac-biomarkers-as-sensitive-tools-to-evaluate-the-impact-of-xenobiotics-on-amphibians-the-effects-of-anionic-surfactant-linear-alkylbenzene-sulfonate-las
#10
Monica Jones-Costa, Lilian Franco-Belussi, Felipe Augusto Pinto Vidal, Nathália Penteado Gongora, Luciano Mendes Castanho, Cleoni Dos Santos Carvalho, Elaine Cristina Mathias Silva-Zacarin, Fabio Camargo Abdalla, Iolanda Cristina Silveira Duarte, Classius De Oliveira, Cristiane Ronchi de Oliveira, Raquel Fernanda Salla
Amphibian populations have been experiencing a drastic decline worldwide. Aquatic contaminants are among the main factors responsible for this decline, especially in the aquatic environment. The linear alkylbenzene sulfonate (LAS) is of particular concern, since it represents 84% of the anionic surfactants' trade. In Brazil, the maximal LAS concentration allowed in fresh waters is 0.5mgL-1, but its potential harmful effects in amphibians remain unknown. Therefore, this study aimed to analyze the effects of a sublethal concentration of LAS (0...
January 16, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29351562/clinical-and-ultrasonographic-features-associated-to-response-to-intraarticular-corticosteroid-injection-a-one-year-follow-up-prospective-cohort-study-in-knee-osteoarthritis-patient-with-joint-effusion
#11
Joan Calvet, Cristóbal Orellana, Carlos Galisteo, María García-Manrique, Noemí Navarro, Assumpta Caixàs, Marta Larrosa, Jordi Gratacós
OBJECTIVES: Intraarticular injection is used for pain relief in knee osteoarthritis (OA), but there is not a well defined profile of patient who could get more benefit from it. The purpose of this study was to evaluate the frequency of pain relief at one year after corticosteroids intraarticular injection and to identify clinical factors associated to response in patients with knee osteoarthritis with joint effusion. METHODS: One-year prospective cohort study of patients with knee OA with joint effusion confirmed by ultrasound...
2018: PloS One
https://www.readbyqxmd.com/read/29351550/differential-actions-of-ppar-%C3%AE-and-ppar-%C3%AE-%C3%AE-on-beige-adipocyte-formation-a-study-in-the-subcutaneous-white-adipose-tissue-of-obese-male-mice
#12
Tamiris Lima Rachid, Flavia Maria Silva-Veiga, Francielle Graus-Nunes, Isabele Bringhenti, Carlos Alberto Mandarim-de-Lacerda, Vanessa Souza-Mello
BACKGROUND AND AIMS: Obesity compromises adipocyte physiology. PPARs are essential to adipocyte plasticity, but its isolated role in the browning phenomenon is not clear. This study aimed to examine whether activation of PPAR-α or PPAR-β/δ could induce beige cell depots in the subcutaneous white adipose tissue of diet-induced obese mice. MATERIAL AND METHODS: Sixty animals were randomly assigned to receive a control diet (C, 10% lipids) or a high-fat diet (HF, 50% lipids) for ten weeks...
2018: PloS One
https://www.readbyqxmd.com/read/29351259/dietary-fatty-acids-alter-lipid-profiles-and-induce-myocardial-dysfunction-without-causing-metabolic-disorders-in-mice
#13
Bainian Chen, Yifan Huang, Dong Zheng, Rui Ni, Mark A Bernards
Oversupply of bulk saturated fatty acids (SFA) induces metabolic disorders and myocardial dysfunction. We investigated whether, without causing metabolic disorders, the uptake of individual dietary SFA species alters lipid profiles and induces myocardial dysfunction. C57BL/6 mice were fed various customized long-chain SFA diets (40% caloric intake from SFA), including a beef tallow (HBD), cocoa butter (HCD), milk fat (HMD) and palm oil diet (HPD), for 6 months. An isocaloric fat diet, containing medium-chain triglycerides, served as a control (CHD)...
January 19, 2018: Nutrients
https://www.readbyqxmd.com/read/29350681/aav-9-mediated-phosphatase-1-inhibitor-1-overexpression-improves-cardiac-contractility-in-unchallenged-mice-but-is-deleterious-in-pressure-overload
#14
D M Schwab, L Tilemann, R Bauer, M Heckmann, A Jungmann, M Wagner, J Burgis, C Vettel, H A Katus, A El-Armouche, O J Müller
The downregulation of β-adrenergic receptors (β-AR) and decreased cAMP-dependent protein kinase activity in failing hearts results in decreased phosphorylation and inactivation of phosphatase-inhibitor-1 (I-1), a distal amplifier element of β-adrenergic signaling, leading to increased protein phosphatase 1 activity and dephosphorylation of key phosphoproteins, including phospholamban. Downregulated and hypophosphorylated I-1 likely contributes to β-AR desensitization; therefore its modulation is a promising approach in heart failure treatment...
January 19, 2018: Gene Therapy
https://www.readbyqxmd.com/read/29349896/treatment-with-low-doses-of-aspirin-during-chronic-phase-of-experimental-chagas-disease-increases-oesophageal-nitrergic-neuronal-subpopulation-in-mice
#15
Cristina Lorena Massocatto, Neide Martins Moreira, Eliane Muniz, Silvana Marques de Araújo, Phileno Pinge-Filho, Robson Marcelo Rossi, Eduardo José de Almeida Araújo, Débora de Mello Gonçales Sant'ana
Patients with Chagas' disease may develop dysfunctions of oesophageal and colonic motility resulting from the degeneration or loss of the myenteric neurons of the enteric nervous system. Studies have shown that the use of aspirin, also known as acetylsalicylic acid (ASA), influences the pathogenesis of the disease. However, this remains controversial. The aim of this study was to evaluate the consequences of treatment with low doses of aspirin during the chronic phase of Chagas' disease on oesophageal function...
January 19, 2018: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/29348847/distinct-roles-of-traf6-and-tak1-in-the-regulation-of-adipocyte-survival-thermogenesis-program-and-high-fat-diet-induced-obesity
#16
Yann S Gallot, Joseph D McMillan, Guangyan Xiong, Kyle R Bohnert, Alex R Straughn, Bradford G Hill, Ashok Kumar
Chronic low-grade inflammation, adipocyte hypertrophy, and glucose intolerance are common features of obesity and a risk factor for cancer. Tumor necrosis factor (TNF) receptor-associated factor 6 (TRAF6) is an adaptor protein that also possesses a non-conventional E3 ubiquitin ligase activity. In response to receptor-mediated events, TRAF6 activates transforming growth factor-activated kinase 1 (TAK1), which leads to activation of the MAPK and nuclear factor-kappa B (NF-κB) signaling pathways. However, the roles of TRAF6 and TAK1 in the regulation of adipocyte function remain less understood...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29348730/black-ginseng-activates-akt-signaling-thereby-enhancing-myoblast-differentiation-and-myotube-growth
#17
Soo-Yeon Lee, Ga-Yeon Go, Tuan Anh Vuong, Jee Won Kim, Sullim Lee, Ayoung Jo, Jun Min An, Su-Nam Kim, Dong-Wan Seo, Jin-Seok Kim, Yong Kee Kim, Jong-Sun Kang, Sang-Jin Lee, Gyu-Un Bae
Background: Black ginseng (BG) has greatly enhanced pharmacological activities relative to white or red ginseng. However, the effect and molecular mechanism of BG on muscle growth has not yet been examined. In this study, we investigated whether BG could regulate myoblast differentiation and myotube hypertrophy. Methods: BG-treated C2C12 myoblasts were differentiated, followed by immunoblotting for myogenic regulators, immunostaining for a muscle marker, myosin heavy chain or immunoprecipitation analysis for myogenic transcription factors...
January 2018: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29348482/egfr-activation-triggers-cellular-hypertrophy-and-lysosomal-disease-in-naglu-depleted-cardiomyoblasts-mimicking-the-hallmarks-of-mucopolysaccharidosis-iiib
#18
Valeria De Pasquale, Antonio Pezone, Patrizia Sarogni, Alfonso Tramontano, Gabriele Giacomo Schiattarella, Vittorio Enrico Avvedimento, Simona Paladino, Luigi Michele Pavone
Mucopolysaccharidosis (MPS) IIIB is an inherited lysosomal storage disease caused by the deficiency of the enzyme α-N-acetylglucosaminidase (NAGLU) required for heparan sulfate (HS) degradation. The defective lysosomal clearance of undigested HS results in dysfunction of multiple tissues and organs. We recently demonstrated that the murine model of MPS IIIB develops cardiac disease, valvular abnormalities, and ultimately heart failure. To address the molecular mechanisms governing cardiac dysfunctions in MPS IIIB, we generated a model of the disease by silencing NAGLU gene expression in H9C2 rat cardiomyoblasts...
January 18, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29348286/portal-vein-embolisation-in-a-patient-with-situs-inversus
#19
Igor Faria, Roberto Romulo Souza, Roberto Fuser Prosperi, Jose Hugo M Luz
Portal vein embolisation (PVE) is a well-established technique used for patients who require major hepatic resections without sufficient volume of future remnant liver (FRL). We describe a case of PVE in a patient with situs inversus. Computed Tomography (CT) 4 weeks after the procedure demonstrated significant hypertrophy of the FRL. However, the surgical procedure was aborted due to signs of extrahepatic progression.
January 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29345464/whole-egg-consumption-exerts-a-nephroprotective-effect-in-an-acute-rodent-model-of-type-1-diabetes
#20
Cassondra J Saande, Samantha K Jones, Matthew J Rowling, Kevin L Schalinske
Nephropathy is a well-characterized complication of type 1 diabetes (T1D), resulting in proteinuria and urinary loss of micronutrients. We previously found that a whole egg-based diet maintained vitamin D balance in type 2 diabetic rats despite excessive urinary losses due to nephropathy. The goal of this study was to investigate the impact of whole egg consumption in T1D rats. Sprague-Dawley rats were randomly assigned to T1D or nondiabetic control groups and fed a casein or whole egg-based diet for 32 days...
January 18, 2018: Journal of Agricultural and Food Chemistry
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