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Vascular Aging

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https://www.readbyqxmd.com/read/28346526/plasma-potassium-diuretic-use-and-risk-of-developing-chronic-kidney-disease-in-a-predominantly-white-population
#1
Lyanne M Kieneker, Michele F Eisenga, Michel M Joosten, Rudolf A de Boer, Ron T Gansevoort, Jenny E Kootstra-Ros, Gerjan Navis, Stephan J L Bakker
OBJECTIVE: Both hypokalemia and hyperkalemia are associated with disease progression in patients with chronic kidney disease (CKD). It is unclear whether similar associations are present in the general population. Our aim was to examine the association of plasma potassium with risk of developing CKD and the role of diuretics in this association in a population-based cohort. RESEARCH DESIGN AND METHODS: We studied 5,130 subjects free of CKD at baseline of the Prevention of Renal and Vascular End-Stage Disease (PREVEND) study, a prospective, population-based cohort of Dutch men and women aged 28-75 years...
2017: PloS One
https://www.readbyqxmd.com/read/28345735/-supratentorial-cavernous-malformations-in-an-argentinian-institution-experience-with-surgical-treatment
#2
G E Vergara, A Cervio, M Farez, R Mormandi, S Condomi-Alcorta, J Salvat
INTRODUCTION: Cavernous malformations are vascular malformations of the central nervous system formed by a group of capillaries not covered by pia mater and communicated to the vascular system at very low pressure with very slow flow. Surgery or radiosurgery are the treatment modalities. AIMS: To analyze our results after surgical treatment of supratentorial cavernous malformations, reviewing clinical presentation, surgical indications and postoperative complications...
April 1, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28345659/oral-chromium-picolinate-impedes-hyperglycemia-induced-atherosclerosis-and-inhibits-proatherogenic-protein-tsp-1-expression-in-stz-induced-type-1-diabetic-apoe-mice
#3
Rituparna Ganguly, Soumyadip Sahu, Vahagn Ohanyan, Rebecca Haney, Ronaldo J Chavez, Shivani Shah, Siri Yalamanchili, Priya Raman
Increasing evidence suggests thrombospondin-1 (TSP-1), a potent proatherogenic matricellular protein, as a putative link between hyperglycemia and atherosclerotic complications in diabetes. We previously reported that the micronutrient chromium picolinate (CrP), with long-standing cardiovascular benefits, inhibits TSP-1 expression in glucose-stimulated human aortic smooth muscle cells in vitro. Here, we investigated the atheroprotective action of orally administered CrP in type 1 diabetic apolipoprotein E-deficient (ApoE(-/-)) mice and elucidated the role of TSP-1 in this process...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345626/elevated-angiopoietin-2-in-aqueous-of-patients-with-neovascular-age-related-macular-degeneration-correlates-with-disease-severity-at-presentation
#4
Danny S Ng, Yolanda W Yip, Malini Bakthavatsalam, Li J Chen, Tse K Ng, Timothy Y Lai, Calvin P Pang, Mårten E Brelén
Angiopoietin 2 (ANG2) is a proangiogenic cytokine which may have an implication in neovascular age related macular degeneration (nAMD). In 24 eyes of 24 subjects presenting with treatment naïve nAMD and 26 eyes of 26 control patients, aqueous humor samples were collected at the time of intervention (intravitreal injection of anti-vascular endothelial growth factor or cataract extraction). Best corrected visual acuity (BCVA) with and central macular thickness (CMT) using optical coherence tomography (OCT) were measured before each injection in the nAMD group...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345544/retinal-vascular-morphological-changes-in-patients-with-extremely-severe-obstructive-sleep-apnea-syndrome
#5
Xiao-Yi Wang, Shuang Wang, Xue Liu, Xiu Ding, Meng Li, De-Min Han
BACKGROUND: Obstructive sleep apnea syndrome (OSAS) has been shown to generate hypertension and endothelial dysfunction. Retinal vessel is the only vessel that can be observed directly and noninvasively; retinal vascular abnormalities can serve as a predictive marker for the occurrence, clinical course, and prognosis of cardiovascular and cerebrovascular diseases. The objective of this study was to identify the effect of OSAS severity on the morphological changes of retinal vessels. METHODS: Adult patients complained of snoring were included in this study...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28345395/evaluation-of-the-predictive-value-of-cha2ds2-vasc-score-for-in-stent-restenosis
#6
Samet Yilmaz, Mehmet Kadri Akboga, Dursun Aras, Serkan Topaloglu
The CHA2DS2-VASc (congestive heart failure, hypertension, age ≥75 years, diabetes mellitus, previous stroke, vascular disease, age 65-74 years, female gender) score is used to estimate thromboembolic risk in atrial fibrillation (AF). Its usefulness in predicting in-stent restenosis (ISR) is unknown. We evaluated the predictive value of the CHA2DS2-VASc score in AF-free patients who have undergone stent implantation. A total of 1350 patients who underwent coronary angiography and successful bare-metal stent implantation were analyzed...
January 1, 2017: Angiology
https://www.readbyqxmd.com/read/28345319/vascular-cell-adhesion-molecule-1-intercellular-adhesion-molecule-1-and-cluster-of-differentiation-146-levels-in-patients-with-type-2-diabetes-with-complications
#7
F Sinem Hocaoglu-Emre, Devrim Saribal, Guven Yenmis, Guvenc Guvenen
BACKGROUND: Type 2 diabetes mellitus (T2DM) is a multisystemic, chronic disease accompanied by microvascular complications involving various complicated mechanisms. Intercellular adhesion molecule 1 (ICAM-1), vascular cell adhesion molecule 1 (VCAM-1), and cluster of differentiation-146 (CD146) are mainly expressed by endothelial cells, and facilitate the adhesion and transmigration of immune cells, leading to inflammation. In the present study, we evaluated the levels of soluble adhesion molecules in patients with microvascular complications of T2DM...
March 2017: Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28345303/arterial-ageing-from-endothelial-dysfunction-to-vascular-calcification
#8
M Tesauro, A Mauriello, V Rovella, M Annicchiarico-Petruzzelli, C Cardillo, G Melino, N Di Daniele
Complex structural and functional changes occur in the arterial system with advancing age. The aged artery is characterized by changes in microRNA expression patterns, autophagy, smooth muscle cell migration and proliferation, and arterial calcification with progressively increased mechanical vessel rigidity and stiffness. With age the vascular smooth muscle cells modify their phenotype from contractile to 'synthetic' determining the development of intimal thickening as early as the second decade of life as an adaptive response to forces acting on the arterial wall...
March 27, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28345114/peripheral-endothelial-function-after-arterial-switch-operation-for-d-looped-transposition-of-the-great-arteries
#9
Heather Y Sun, Katie Jo Stauffer, Susan E Nourse, Chau Vu, Elif Seda Selamet Tierney
Coronary artery re-implantation during arterial switch operation in patients with D-looped transposition of the great arteries (D-TGA) can alter coronary arterial flow and increase shear stress, leading to local endothelial dysfunction, although prior studies have conflicting results. Endothelial pulse amplitude testing can predict coronary endothelial dysfunction by peripheral arterial testing. This study tested if, compared to healthy controls, patients with D-TGA after arterial switch operation had peripheral endothelial dysfunction...
March 27, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28344760/severe-pulmonary-hypertension-in-aging-female-apolipoprotein-e-deficient-mice-is-rescued-by-estrogen-replacement-therapy
#10
Soban Umar, Rod Partow-Navid, Gregoire Ruffenach, Andrea Iorga, Shayan Moazeni, Mansoureh Eghbali
BACKGROUND: Apolipoprotein E (ApoE) is a multifunctional protein, and its deficiency leads to the development of atherosclerosis in mice. Patients with pulmonary hypertension (PH) have reduced expression of ApoE in lung tissue. ApoE is known to inhibit endothelial and smooth muscle cell proliferation and has anti-inflammatory and anti-platelet aggregation properties. Young ApoE-deficient mice have been shown to develop PH on high fat diet. The combined role of female sex and aging in the development of PH has not been investigated before...
2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/28344738/adherence-to-exercise-prescription-and-improvements-in-the-clinical-and-vascular-health-of-african-americans
#11
Dianne M Babbitt, Amanda M Perkins, Keith M Diaz, Deborah L Feairheller, Kathleen M Sturgeon, Praveen Veerabhadrappa, Sheara T Williamson, Jan Kretzschmar, Chenyi Ling, Hojun Lee, Heather Grim, Michael D Brown
Improvements in indices of vascular health and endothelial function have been inversely associated with hypertension, a risk factor for cardiovascular disease (e.g., myocardial infarction, stroke, and heart failure), renal failure, and mortality. Aerobic exercise training (AEXT) has been positively associated with improvements in clinical health values, as well as vascular health biomarkers, and endothelial function. The purpose of this study was to evaluate whether measures of exercise adherence were related to clinical outcome measures and indices of vascular health subsequent to a 6-month AEXT intervention in a middle-to-older aged African American cohort...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28344527/reverse-radial-forearm-flap-to-provide-arterial-inflow-to-a-toe-transfer
#12
Joohak Kim, Alfred P Yoon, Neil F Jones
Background: Toe-to-thumb transfer has become the gold standard for thumb reconstruction, but in badly mutilated hands, additional soft tissue coverage may be required or a suitable recipient artery may not be available. There are only 3 case reports describing the successful use of a reverse radial forearm flap for coverage of a soft tissue defect around the thumb as well as providing arterial inflow for a toe transfer, performed either simultaneously or secondarily. Methods: A single surgeon's experience of all toe-to-hand transfers performed in conjunction with a reverse radial forearm flap between 1995 and 2014 was reviewed, including patient demographics, type of toe transfer and vascular pedicle, whether immediate or secondary, follow-up, and complications...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28344181/stereotactic-radiosurgery-for-pediatric-high-grade-brain-arteriovenous-malformations-our-experience-and-review-of-literature
#13
Mohana Rao Patibandla, Dale Ding, Zhiyuan Xu, Jason P Sheehan
INTRODUCTION: Although high-grade AVMs pose a particularly high lifetime hemorrhage risk to pediatric patients (age <18 years), little is known about the treatment outcomes. Therefore, the aim of this retrospective cohort study was to evaluate the outcomes after single-session stereotactic radiosurgery (SRS) for pediatric high-grade AVMs. METHODS: we reviewed baseline and treatment outcomes data from pediatric patient's age less than 18 years with SM Grade IV AVMs treated with SRS in a single session at our institution...
March 23, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28344160/pre-operative-predictors-of-poor-outcomes-in-patients-undergoing-surgical-lower-extremity-revascularisation-retrospective-cohort-study
#14
Mohammed Ashrafi, Rohini Salvadi, Philip Foden, Stephanie Thomas, Mohamed Baguneid
BACKGROUND: Surgical lower extremity revascularisation (LER) can lead to poor outcomes that include delayed hospital discharge, in-hospital mortality, major amputations and readmissions. The aim of this study was to identify pre-operative predictors associated with these poor clinical outcomes. MATERIALS AND METHODS: All patients (n = 635; mean age 69; male 67.4%) who underwent surgical LER over a 5 year period in a single tertiary vascular institution were identified...
March 23, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28343901/gper-blockers-as-nox-downregulators-a-new-drug-class-to-target-chronic-non-communicable-diseases
#15
Matthias R Meyer, Matthias Barton
Oxidative stress is a hallmark of chronic non-communicable diseases such as arterial hypertension, diabetes, coronary artery disease, and stroke. Cardiovascular diseases are characterized by increased production of reactive oxygen species (ROS) by NAPDH oxidase 1 (Nox1) and additional Nox isoforms among other sources. Activation of the G protein-coupled estrogen receptor (GPER) can mediate multiple salutary effects on the cardiovascular system. However, GPER also has constitutive activity, e.g. in the absence of specific agonists, that was recently shown to promote hypertension and aging-induced tissue damage by enabling Nox1-derived production of ROS...
March 23, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28343011/ultrasound-characterization-of-ankle-involvement-in-l%C3%A3-fgren-syndrome
#16
Claire Goussault, Jean-David Albert, Guillaume Coiffier, François Lamer, Raphaël Guillin, Benoit Le Goff, Béatrice Bouvard, Emmanuelle Dernis, Marine Ferreyra, Grégoire Cormier, Pascal Guggenbuhl, Aleth Perdriger
BACKGROUND: Bilateral ankle arthritis is a classic diagnostic criterion for Löfgren syndrome. The objective of this study was to use ultrasonography to characterize the articular and peri-articular involvement of the ankles in patients with Löfgren syndrome. METHODS: Single-center descriptive cohort study of patients with Löfgren syndrome who underwent ultrasonography of the ankles. We collected clinical data, imaging study findings, blood test results, and joint fluid properties in patients who underwent joint aspiration...
March 22, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28342638/-rationale-and-complications-of-the-anterior-lateral-extrapleural-retroperitoneal-approach-for-unstable-thoracolumbar-fractures-experience-in-86-consecutive-patients
#17
Pedro David Delgado-López, Antonio Rodríguez-Salazar, Vicente Martín-Velasco, Javier Martín-Alonso, José Manuel Castilla-Díez, Ana Galacho-Harriero, Elena Araús-Galdós
OBJECTIVES: To describe the rationale, pros and cons, and complications of the anterior-lateral extrapleural retroperitoneal approach for unstable (TLICS>4) thoracolumbar fractures. PATIENTS AND METHODS: Clinical and radiological data and outcomes from a cohort treated surgically via said approach were retrospectively reviewed. All patients were operated on exclusively by 5 neurosurgeons trained in spine surgery. RESULTS: Between June 1999 and December 2015, 86 patients underwent surgery (median age 42years, most common level: L1)...
March 22, 2017: Neurocirugía
https://www.readbyqxmd.com/read/28342098/expression-of-cell-cycle-regulators-and-biomarkers-of-proliferation-and-regrowth-in-human-pituitary-adenomas
#18
Mark Gruppetta, Robert Formosa, Sharon Falzon, Sabrina Ariff Scicluna, Edward Falzon, James Degeatano, Josanne Vassallo
PURPOSE: The pathogenesis of pituitary adenomas (PA) is complex. Ki-67, pituitary tumour transforming gene (PTTG), vascular endothelial growth factor (VEGF), cyclin D1, c-MYC and pituitary adenylate cyclase-activating peptide (PACAP) protein expression were analysed and correlated with tumour and patient characteristics. METHODS: 74 pituitary tumour samples (48 non-functional PA, 26 functional PAs); Immunohistochemical analysis of protein expression, retrospective analysis of MR images and in vitro analysis of octreotide treatment was carried out on GH3 cells...
March 24, 2017: Pituitary
https://www.readbyqxmd.com/read/28341719/brain-perivascular-spaces-as-biomarkers-of-vascular-risk-results-from-the-northern-manhattan-study
#19
J Gutierrez, M S V Elkind, C Dong, M Di Tullio, T Rundek, R L Sacco, C B Wright
BACKGROUND AND PURPOSE: Dilated perivascular spaces in the brain are associated with greater arterial pulsatility. We hypothesized that perivascular spaces identify individuals at higher risk for systemic and cerebral vascular events. MATERIALS AND METHODS: Stroke-free participants in the population-based Northern Manhattan Study had brain MR imaging performed and were followed for myocardial infarction, any stroke, and death. Imaging analyses distinguished perivascular spaces from lesions presumably ischemic...
March 24, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28341686/incidental-findings-on-brain-mri-of-cognitively-normal-first-degree-descendants-of-patients-with-alzheimer-s-disease-a-cross-sectional-analysis-from-the-alfa-alzheimer-and-families-project
#20
Anna Brugulat-Serrat, Santiago Rojas, Nuria Bargalló, Gerardo Conesa, Carolina Minguillón, Karine Fauria, Nina Gramunt, José Luis Molinuevo, Juan Domingo Gispert
OBJECTIVES: To describe the prevalence of brain MRI incidental findings (IF) in a cohort of cognitively normal first-degree descendants of patients with Alzheimer's disease (AD). DESIGN: Cross-sectional observational study. SETTING: All scans were obtained with a 3.0 T scanner. Scans were evaluated by a single neuroradiologist and IF recorded and categorised. The presence of white matter hyperintensities (WMH) was determined with the Fazekas scale and reported as relevant if ≥2...
March 24, 2017: BMJ Open
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