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https://www.readbyqxmd.com/read/28103056/age-related-changes-to-vascular-protease-activated-receptor-2-in-metabolic-syndrome-a-relationship-between-oxidative-stress-receptor-expression-and-endothelium-dependent-vasodilation
#1
Kana Maruyama, Satomi Kagota, John J McGuire, Hirokazu Wakuda, Noriko Yoshikawa, Kazuki Nakamura, Kazumasa Shinozuka
Protease-activated receptor 2 (PAR2) is expressed in vascular endothelium. Nitric oxide (NO) - cyclic GMP-mediated vasodilation in response to 2-furoyl-LIGRLO-amide (2fLIGRLO), a PAR2-activating peptide, is impaired in aortas from aged SHRSP.Z-Lepr(fa)/IzmDmcr (SHRSP.ZF) rats with metabolic syndrome. Here we investigated mechanisms linking PAR2's vascular effects to phenotypic characteristics of male SHRSP.ZF rats at 10, 20, and 30 weeks of age. We found vasodilation responses to either 2fLIGRLO or enzyme-mediated PAR2 activation by trypsin were sustained until 20 weeks and lessened at 30 weeks...
October 19, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28102887/clinical-trial-of-nintedanib-in-patients-with-recurrent-or-metastatic-salivary-gland-cancer-of-the-head-and-neck-a-multicenter-phase-2-study-korean-cancer-study-group-hn14-01
#2
Youjin Kim, Su Jin Lee, Ji Yun Lee, Se-Hoon Lee, Jong-Mu Sun, Keunchil Park, Ho Jung An, Jae Yong Cho, Eun Joo Kang, Ha-Young Lee, Jinsoo Kim, Bhumsuk Keam, Hye Ryun Kim, Kyoung Eun Lee, Moon Young Choi, Ki Hyeong Lee, Myung-Ju Ahn
BACKGROUND: Salivary gland cancers (SGCs) are uncommon and account for less than 5% of all head and neck cancers, but they are histologically heterogeneous. No specific therapy, including targeted agents, has consistently improved clinical outcomes in recurrent/metastatic SGC. Recent studies suggest that vascular endothelial growth factor receptor (VEGFR) and platelet-derived growth factor receptor (PDGFR) play important roles in SGC. Nintedanib is a potent small-molecule, triple-receptor tyrosine kinase inhibitor (VEGFR1, VEGFR2, and VEGFR3; fibroblast growth factor receptor 1 [FGFR1], FGFR2, and FGFR3; and PDGFRα and PDGFRß)...
January 19, 2017: Cancer
https://www.readbyqxmd.com/read/28102774/interactions-between-c-reactive-protein-and-traditional-risk-factors-in-predicting-mortality-of-older-adults
#3
Henrik Rudolf, Naemi Wall, Renate Klaassen-Mielke, Ulrich Thiem, Curt Diehm, Hans-Joachim Trampisch, Dietmar Krause
BACKGROUND: Elevated levels of C-reactive protein (CRP) are known to be associated with cardiovascular (CV) morbidity and mortality in older adults, however, there seems to be heterogeneity of this association across subsets of individuals. We aim to assess the effects of interactions between CRP and one of the following traditional CV risk factors regarding all-cause mortality in unselected elderly men and women: age, sex, body mass index, diabetes, and hypertension. PATIENTS AND METHODS: Three hundred and forty-four general practitioners all over Germany enrolled 6,817 unselected participants, aged 65 years or older, and performed thorough examinations, including CRP measurement at baseline (getABI study)...
January 19, 2017: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/28102592/six-uneventful-pregnancy-outcomes-in-an-extended-vascular-ehlers-danlos-syndrome-family
#4
Annette F Baas, Wilko Spiering, Frans L Moll, Lieve Page-Christiaens, Ingrid C M Beenakkers, Dennis Dooijes, Evert-Jan P A Vonken, Jasper J van der Smagt, Nine V Knoers, Steven V Koenen, Joost A van Herwaarden, Gertjan Tj Sieswerda
Vascular Ehlers-Danlos Syndrome (vEDS) is caused by heterozygous mutations in COL3A1 and is characterized by fragile vasculature and hollow organs, with a high risk of catastrophic events at a young age. During pregnancy and delivery, maternal mortality rates up until 25% have been reported. However, recent pedigree analysis reported a substantial lower pregnancy-related mortality rate of 4.9%. Here, we describe an extended vEDS family with multiple uneventful pregnancy outcomes. In the proband, a 37-year-old woman, DNA-analysis because of an asymptomatic iliac artery dissection revealed a pathogenic mutation in COL3A1 (c...
February 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28101819/high-central-aortic-rather-than-brachial-blood-pressure-is-associated-with-carotid-wall-remodeling-and-increased-arterial-stiffness-in-childhood
#5
Gonzalo Peluso, Victoria García-Espinosa, Santiago Curcio, Marco Marota, Juan Castro, Pedro Chiesa, Gustavo Giachetto, Daniel Bia, Yanina Zócalo
INTRODUCTION: In adults, central blood pressure (cBP) is reported to associate target organ damages (TODs) rather than peripheral blood pressure (pBP). However, data regarding the association of pre-clinical TODs with cBP and pBP in pediatric populations are scarce. AIM: To evaluate in children and adolescents the importance of cBP and pBP levels, in terms of their association with hemodynamic and vascular changes. METHODS: 315 subjects [age (mean/range) 12/8-18 years] were included...
January 19, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/28100923/reductions-in-central-arterial-compliance-with-age-are-related-to-sympathetic-vasoconstrictor-nerve-activity-in-healthy-men
#6
Hirofumi Tanaka, Frank A Dinenno, Douglas R Seals
The compliance of large elastic arteries in the cardiothoracic circulation declines, whereas sympathetic nervous system activity increases markedly with advancing age in adult humans. We tested the hypothesis that the reduction in compliance of the large elastic arteries with age is associated with elevations in sympathetic tone to vascular smooth muscle in 16 young and 17 older adults. Carotid arterial compliance (via ultrasonography) was 45% lower in healthy older compared with young men (P<0.001), and was inversely related to sympathetic nerve activity (via microneurography) (r=-0...
January 19, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28100909/impact-of-pretransplant-induction-therapy-on-autologous-stem-cell-transplantation-for-patients-with-newly-diagnosed-poems-syndrome
#7
J Li, M-H Duan, C Wang, X-F Huang, W Zhang, X-X Cao, T-N Zhu, J-L Zhuang, B Han, H Cai, H-C Cai, D-B Zhou
POEMS syndrome (polyneuropathy, organomegaly, endocrinopathy, Monoclonal gammopathy and skin changes) is a rare plasma cell dyscrasia sometimes treated with a haematopoietic cell autotransplant. We analyzed data from 138 subjects with newly-diagnosed POEMS syndrome receiving a autotransplant at our centre. Thirty-two subjects with severe end-organ dysfunction ineligible for immediate autotransplant received pretransplant therapy which made a subsequent autotransplant feasible. Pretransplant therapy resulted in vascular endothelial growth factor (VEGF) remissions in 15 (47%)...
January 19, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28100839/tyrosine-kinase-blocking-collagen-iv-derived-peptide-suppresses-ocular-neovascularization-and-vascular-leakage
#8
Raquel Lima E Silva, Yogita Kanan, Adam C Mirando, Jayoung Kim, Ron B Shmueli, Valeria E Lorenc, Seth D Fortmann, Jason Sciamanna, Niranjan B Pandey, Jordan J Green, Aleksander S Popel, Peter A Campochiaro
Vascular endothelial growth factor (VEGF)-neutralizing proteins provide benefit in several retinal and choroidal vascular diseases, but some patients still experience suboptimal outcomes, and the need for frequent intraocular injections is a barrier to good outcomes. A mimetic peptide derived from collagen IV, AXT107, suppressed subretinal neovascularization (NV) in two mouse models predictive of effects in neovascular age-related macular degeneration (NVAMD) and inhibited retinal NV in a model predictive of effects in ischemic retinopathies...
January 18, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28100340/-outcome-comparison-of-different-therapy-procedures-in-surgical-high-risk-elderly-patients-with-severe-aortic-stenosis
#9
Y Q Ye, Y T Wang, Z Li, M Y Wang, H Y Xu, W J Zhang, Q R Liu, G N Niu, Y J Wu
Objective: To compare the outcome of surgical high-risk elderly patients with severe aortic stenosis(SAS) treated by different therapy procedures, including transcatheter aortic valve implantation(TAVI), surgical aortic valve replacement(SAVR), and drug therapy. Methods: We retrospectively analyzed the clinical data of 242 surgical high-risk elderly (age ≥65 years old) SAS patients hospitalized in Fuwai Hospital between September 2012 and June 2015. According to the treatment method, patients were divided into TAVI group (81 cases), SAVR group (59 cases) and drug therapy group (102 cases)...
January 25, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28100097/spina-bifida-and-lower-limb-amputation-in-northern-ireland-a-retrospective-study-of-demographics-and-outcome
#10
Lorraine Graham
BACKGROUND: Spina bifida is an uncommon cause for lower limb amputation. The causes and level of amputation and mobility outcome for these patients have not been reported previously. CASE DESCRIPTION: To identify the causes and level of amputation and the mobility outcome for amputee patients with spina bifida. STUDY DESIGN: Retrospective case series. METHODS: Chart review of patients identified by computer as having an amputation secondary to neurological or congenital cause...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28099964/advancing-age-decreases-pressure-sensitive-modulation-of-calcium-signaling-in-the-endothelium-of-intact-and-pressurized-arteries
#11
Calum Wilson, Christopher D Saunter, John M Girkin, John G McCarron
Aging is the summation of many subtle changes which result in altered cardiovascular function. Impaired endothelial function underlies several of these changes and precipitates plaque development in larger arteries. The endothelium transduces chemical and mechanical signals into changes in the cytoplasmic calcium concentration to control vascular function. However, studying endothelial calcium signaling in larger arteries in a physiological configuration is challenging because of the requirement to focus through the artery wall...
January 19, 2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28099772/exploring-the-symbiont-diversity-of-ancient-western-redcedars-arbuscular-mycorrhizal-fungi-of-long-lived-hosts
#12
Monika A Gorzelak, Brian J Pickles, Miranda M Hart
Arbuscular mycorrhizal fungi (AMF) are globally distributed, monophyletic root symbionts with ancient origins. Their contribution to carbon cycling and nutrient dynamics is ecologically important, given their obligate association with over 70% of vascular plant species. Current understanding of AMF species richness and community structure is based primarily on studies of grasses, herbs, and agricultural crops, typically in disturbed environments. Few studies have considered AMF interactions with long-lived woody perennial species in undisturbed ecosystems...
January 18, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28099588/dobutamine-stress-echocardiography-safety-in-chagas-disease-patients
#13
Daniela do Carmo Rassi, Marcelo Luiz Campos Vieira, Rogerio Gomes Furtado, Fabio de Paula Turco, Luciano Henrique Melato, Viviane Tiemi Hotta, Colandy Godoy de Oliveira Nunes, Luiz Rassi, Salvador Rassi
Background: A few decades ago, patients with Chagas disease were predominantly rural workers, with a low risk profile for obstructive coronary artery disease (CAD). As urbanization has increased, they became exposed to the same risk factors for CAD of uninfected individuals. Dobutamine stress echocardiography (DSE) has proven to be an important tool in CAD diagnosis. Despite being a potentially arrhythmogenic method, it is safe for coronary patients without Chagas disease. For Chagas disease patients, however, the indication of DSE in clinical practice is uncertain, because of the arrhythmogenic potential of that heart disease...
January 16, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28099550/factors-associated-with-the-contraindicated-use-of-oral-contraceptives-in-brazil
#14
Daniele Aparecida Silva Corrêa, Mariana Santos Felisbino-Mendes, Mayara Santos Mendes, Deborah Carvalho Malta, Gustavo Velasquez-Melendez
OBJECTIVE: To estimate the prevalence of the contraindicated use of oral contraceptives and the associated factors in Brazilian women. METHODS: 20,454 women who answered the VIGITEL survey in 2008 also participated in this study, of which 3,985 reported using oral contraceptives. We defined the following conditions for the contraindicated use of contraceptives: hypertension; cardiovascular diseases such as heart attack, stroke/cerebrovascular accident; diabetes mellitus; being smoker and 35 years old or older...
January 12, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28099525/polyethylene-glycol-camouflaged-earthworm-hemoglobin
#15
Vivek P Jani, Alborz Jelvani, Selamawit Moges, Parimala Nacharaju, Camille Roche, David Dantsker, Andre Palmer, Joel M Friedman, Pedro Cabrales
Nearly 21 million components of blood and whole blood and transfused annually in the United States, while on average only 13.6 million units of blood are donated. As the demand for Red Blood Cells (RBCs) continues to increase due to the aging population, this deficit will be more significant. Despite decades of research to develop hemoglobin (Hb) based oxygen (O2) carriers (HBOCs) as RBC substitutes, there are no products approved for clinical use. Lumbricus terrestris erythrocruorin (LtEc) is the large acellular O2 carrying protein complex found in the earthworm Lumbricus terrestris...
2017: PloS One
https://www.readbyqxmd.com/read/28099405/insights-in-transplanting-complex-paediatric-renal-recipients-with-vascular-anomalies
#16
Pankaj Chandak, Nicos Kessaris, Chris J Callaghan, Francis Calder, Jelena Stojanovic, Jonathon Olsburgh, Martin Drage, Helen Hume-Smith, Zubir Ahmed, Anna Adamusiak, Derek Roebuck, Colin Forman, Stephen D Marks, Nizam Mamode
BACKGROUND: Children with end-stage kidney disease may have co-existing iatrogenic or congenital vascular anomalies making transplantation difficult. We describe our approach in 5 recipients with vascular anomalies and significant co-morbidities, including one case of blood group incompatibility. METHODS: Five children aged 3 - 17 (median 7) years, weighing 14 - 34 (median 18) kg of whom 4 had occluded inferior vena cava or iliac veins and 2 had previous complex vascular reconstructions prior to transplantation for mid-aortic syndrome and multiple aortic aneurysms, respectively underwent renal transplantation...
January 17, 2017: Transplantation
https://www.readbyqxmd.com/read/28099379/systemic-intraoperative-anticoagulation-during-arterial-injury-repair-implications-for-patency-and-bleeding
#17
Zoё Maher, Brian Frank, Noelle Saillant, Anna Goldenberg, Elizabeth Dauer, Joshua P Hazelton, Andrea Lubitz, Huaqing Zhao, Jeremy W Cannon, Mark J Seamon
BACKGROUND: The role of systemic intraoperative anticoagulation (SIAC) during surgical repair of major arterial injuries is controversial. Any potential improvement in arterial patency must be weighed against the risk of hemorrhage in these critically injured patients. We hypothesized that SIAC would increase arterial patency without increasing bleeding complications. METHODS: We conducted a multi-institution, retrospective cohort study of trauma patients with major vascular injury from 2005-2013 in 3 level I centers...
January 17, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28099352/acute-pancreatitis-in-patients-with-pancreatic-cancer-timing-of-surgery-and-survival-duration
#18
Shaojun Li, Bole Tian
Acute pancreatitis (AP) is a rare manifestation of pancreatic cancer (PC). The relationship between AP and PC remains less distinct.From January 2009 to November 2015, 47consecutive patients with PC who presented with AP were reviewed for this study. Clinical features, clinicopathologic variables, postoperative complications, and follow-up evaluations of patients were documented in detail from our database. In order to identify cutoff threshold time for surgery, receiver operating curve (ROC) was built according to patients with or without postoperative complications...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28099179/traditional-sternotomy-versus-minimally-invasive-aortic-valve-replacement-in-patients-stratified-by-ejection-fraction
#19
Tom C Nguyen, Vinod H Thourani, Justin Q Pham, Yelin Zhao, Matthew D Terwelp, Prakash Balan, Daniel Ocazionez, Catalin Loghin, Richard W Smalling, Anthony L Estrera, Joseph Lamelas
OBJECTIVE: Low ejection fraction (EF < 40%) portends adverse outcomes in patients undergoing valvular heart surgery. The role of traditional median sternotomy aortic valve replacement (SAVR) compared with minimally invasive aortic valve replacement (MIAVR) in this cohort remains incompletely understood. METHODS: A multi-institutional retrospective review of 1503 patients who underwent SAVR (n = 815) and MIAVR via right anterior thoracotomy (n = 688) from 2011 to 2014 was performed...
January 17, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28098771/breast-cancer-brain-metastases-clonal-evolution-in-clinical-context
#20
REVIEW
Jodi M Saunus, Amy E McCart Reed, Zhun Leong Lim, Sunil R Lakhani
Brain metastases are highly-evolved manifestations of breast cancer arising in a unique microenvironment, giving them exceptional adaptability in the face of new extrinsic pressures. The incidence is rising in line with population ageing, and use of newer therapies that stabilise metastatic disease burden with variable efficacy throughout the body. Historically, there has been a widely-held view that brain metastases do not respond to circulating therapeutics because the blood-brain-barrier (BBB) restricts their uptake...
January 13, 2017: International Journal of Molecular Sciences
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