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peripheric vascular disease

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https://www.readbyqxmd.com/read/28646273/pulmonary-vascular-volume-ratio-measured-by-cardiac-computed-tomography-in-children-and-young-adults-with-congenital-heart-disease-comparison-with-lung-perfusion-scintigraphy
#1
Hyun Woo Goo, Sang Hyub Park
BACKGROUND: Lung perfusion scintigraphy is regarded as the gold standard for evaluating differential lung perfusion ratio in congenital heart disease. OBJECTIVE: To compare cardiac CT with lung perfusion scintigraphy for estimated pulmonary vascular volume ratio in patients with congenital heart disease. MATERIALS AND METHODS: We included 52 children and young adults (median age 4 years, range 2 months to 28 years; 31 males) with congenital heart disease who underwent cardiac CT and lung perfusion scintigraphy without an interim surgical or transcatheter intervention and within 1 year...
June 23, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28645730/the-relation-of-digital-vascular-function-to-cardiovascular-risk-factors-in-african-americans-using-digital-tonometry-the-jackson-heart-study
#2
Eric E McClendon, Solomon K Musani, Tandaw E Samdarshi, Sushant Khaire, Donny Stokes, Naomi M Hamburg, Koby Sheffy, Gary F Mitchell, Herman R Taylor, Emelia J Benjamin, Ervin R Fox
Digital vascular tone and function, as measured by peripheral arterial tonometry (PAT), are associated with cardiovascular risk and events in non-Hispanic whites. There are limited data on relations between PAT and cardiovascular risk in African-Americans. PAT was performed on a subset of Jackson Heart Study participants using a fingertip tonometry device. Resting digital vascular tone was assessed as baseline pulse amplitude. Hyperemic vascular response to 5 minutes of ischemia was expressed as the PAT ratio (hyperemic/baseline amplitude ratio)...
June 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28644845/lipo-pge1-suppresses-collagen-production-in-human-dermal-fibroblasts-via-the-erk-ets-1-signaling-pathway
#3
Yoolhee Yang, Hee Jung Kim, Kyong-Je Woo, Daeho Cho, Sa Ik Bang
Dysregulation of collagen production contributes to various pathological processes, including tissue fibrosis as well as impaired wound healing. Lipo-prostaglandin E1 (Lipo-PGE1), a lipid microsphere-incorporated prostaglandin E1, is used as a vasodilator for the treatment of peripheral vascular diseases. Lipo-PGE1 was recently shown to enhance human dermal fibroblast (HDF) migration and in vivo wound healing. No published study has characterized the role of Lipo-PGE1 in collagen regulation in HDFs. Here, we investigated the cellular signaling mechanism by which Lipo-PGE1 regulates collagen in HDFs...
2017: PloS One
https://www.readbyqxmd.com/read/28642238/ager-deletion-enhances-ischemic-muscle-inflammation-neoangiogenesis-and-blood-flow-recovery-in-diabetic-mice
#4
Raquel Lopez Diez, Xiaoping Shen, Gurdip Daffu, Md Khursheed, Jiyuan Hu, Fei Song, Rosa Rosario, Yunlu Xu, Qing Li, Xiangmei Xi, Yu Shan Zou, Huilin Li, Ann Marie Schmidt, Shi Fang Yan
OBJECTIVE: Diabetic subjects are at higher risk of ischemic peripheral vascular disease. We tested the hypothesis that advanced glycation end products (AGEs) and their receptor (RAGE) block neoangiogenesis and blood flow recovery after hindlimb ischemia induced by femoral artery ligation through modulation of immune/inflammatory mechanisms. APPROACH AND RESULTS: Wild-type mice rendered diabetic with streptozotocin and subjected to unilateral femoral artery ligation displayed increased accumulation and expression of AGEs and RAGE in ischemic muscle...
June 22, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28641891/inter-arm-systolic-blood-pressure-differences-relations-with-future-vascular-events-and-mortality-in-patients-with-and-without-manifest-vascular-disease
#5
Guido Kranenburg, Wilko Spiering, Pim A de Jong, L Jaap Kappelle, Gert Jan de Borst, Maarten J Cramer, Frank L J Visseren, Victor Aboyans, Jan Westerink
BACKGROUND: Inter-arm systolic blood pressure difference (SBPD) is an easily obtained patient characteristic which relates to vascular disease. We aimed to identify determinants of large inter-arm SBPD and to investigate the relation between inter-arm SBPD and vascular events in patients with and without manifest vascular disease. METHODS: In a cohort of 7344 patients with manifest vascular disease or vascular risk factors alone enrolled in the Second Manifestations of ARTerial disease (SMART) study, single bilateral non-simultaneous blood pressure measurements were performed...
June 13, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28641152/urea-induced-ros-accelerate-senescence-in-endothelial-progenitor-cells
#6
Maria D'Apolito, Anna Laura Colia, Maria Lasalvia, Vito Capozzi, Maria Pia Falcone, Massimo Pettoello-Mantovani, Michael Brownlee, Angela Bruna Maffione, Ida Giardino
BACKGROUND AND AIMS: The pathogenic events responsible for the reduction of endothelial progenitor cell (EPC) number and function seen in patients with chronic renal failure (CRF) are poorly understood. Here we investigate the hypothesis that increased concentrations of urea associated with CRF increase ROS production directly in EPCs, causing abnormalities associated with coronary artery disease risk. METHODS: Human EPCs were isolated from peripheral blood mononuclear cells of healthy donors and cultured in the presence or absence of 20 mmol/L urea...
June 15, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28640917/human-hantavirus-infection-elicits-pronounced-redistribution-of-mononuclear-phagocytes-in-peripheral-blood-and-airways
#7
Saskia Scholz, Faezzah Baharom, Gregory Rankin, Kimia T Maleki, Shawon Gupta, Sindhu Vangeti, Jamshid Pourazar, Andrea Discacciati, Jonas Höijer, Matteo Bottai, Niklas K Björkström, Johan Rasmuson, Magnus Evander, Anders Blomberg, Hans-Gustaf Ljunggren, Jonas Klingström, Clas Ahlm, Anna Smed-Sörensen
Hantaviruses infect humans via inhalation of virus-contaminated rodent excreta. Infection can cause severe disease with up to 40% mortality depending on the viral strain. The virus primarily targets the vascular endothelium without direct cytopathic effects. Instead, exaggerated immune responses may inadvertently contribute to disease development. Mononuclear phagocytes (MNPs), including monocytes and dendritic cells (DCs), orchestrate the adaptive immune responses. Since hantaviruses are transmitted via inhalation, studying immunological events in the airways is of importance to understand the processes leading to immunopathogenesis...
June 22, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28640077/improvement-of-peripheral-artery-disease-with-sildenafil-and-bosentan-combined-therapy-in-a-patient-with-limited-cutaneous-systemic-sclerosis-a-case-report
#8
Loukman Omarjee, Cedric Fontaine, Guillaume Mahe, Vincent Jaquinandi
RATIONALE: Sildenafil, a phosphodiesterase-5-inhibitor and Bosentan, an endothelin-1-receptor antagonist combined therapy could have beneficial effect in systemic sclerosis (SSc) patients with peripheral artery disease. PATIENT CONCERNS: We report a case of a 48-year-old Black woman, who developed severe left limb claudication and walking limitation following a left femoropopliteal bypass occlusion in 2014. She was a heavy smoker and had a history of right middle cerebral artery ischemic stroke and bilateral Raynaud phenomenon...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28638973/a-retrospective-observational-cohort-study-investigating-the-association-between-acute-kidney-injury-and-all-cause-mortality-among-patients-undergoing-endovascular-repair-of-abdominal-aortic-aneurysms
#9
Kimito Minami, Yoko Sugiyama, Hiroki Iida
BACKGROUND: Acute kidney injury (AKI) has been found to be associated with short- and long-term mortality and morbidity in various clinical settings. However, it is unknown whether AKI after endovascular repair of abdominal aortic aneurysms (EVAR) is associated with postoperative mortality. METHODS: This observational study analyzed patients who underwent EVAR. The primary outcome was all-cause mortality. The outcomes of patients with and without postoperative AKI were compared using the Kaplan-Meier method and log-rank test...
June 21, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28637396/modulation-of-mir29a-improves-impaired-post-ischemic-angiogenesis-in-hyperglycemia
#10
Lingdan Chen, Emmanuel Okeke, Dawit Ayalew, Danny Wang, Lyeba Shahid, Ayotunde O Dokun
Individuals with diabetes mellitus suffer from impaired angiogenesis and this contributes to poorer peripheral arterial disease outcomes. In experimental peripheral arterial disease, angiogenesis and perfusion recovery are impaired in mice with diabetes. We recently showed that a disintegrin and metalloproteinase domain-containing protein 12 (ADAM12) is upregulated in ischemic endothelial cells and plays a key role in post-ischemic angiogenesis and perfusion recovery following experimental peripheral arterial disease...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28626631/chronic-eosinophilic-pneumonia-adjunctive-therapy-with-inhaled-steroids
#11
Christopher Chan, David DeLapp, Perry Nystrom
Idiopathic chronic eosinophilic pneumonia (ICEP) is a rare form of diffuse parenchymal lung disease first identified by Carrington et al. in 1969. It is characterized by the presence of constitutional and respiratory symptoms with associated peripheral opacities on imaging and elevated serum and/or bronchoalveolar eosinophilia. Although data is limited regarding etiology or prevalence, it is known that ICEP has a 2:1 female: male predominance and typically affects non-smokers. Diagnosis rests on the clinical constellation of respiratory symptoms of at least 2-4 weeks duration, the presence of diffuse pulmonary alveolar consolidation, classically described as the "photographic negative of pulmonary edema", the presence of eosinophils ≥40% on bronchoalveolar lavage or ≥1000/mm(3) eosinophils on peripheral blood and the exclusion of other known causes of eosinophilic lung diseases such as drugs, toxins, fungi, parasites, and collagen-vascular disorders...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28626075/sex-differences-in-vascular-physiology-and-pathophysiology-estrogen-and-androgen-signaling-in-health-and-disease
#12
Austin C Boese, Seong Chul Kim, Ke-Jie Yin, Jean-Pyo Lee, Milton H Hamblin
Sex differences between women and men are often overlooked and underappreciated when studying the cardiovascular system. It has been long assumed that men and women are physiologically similar, and this notion has resulted in females being clinically evaluated and treated for cardiovascular pathophysiological complications as males. Currently, there is increased recognition of fundamental sex differences in cardiovascular function, anatomy, cell signaling, and pathophysiology. NIH has enacted guidelines expressly to gain knowledge about ways the sexes differ in both normal function and diseases at the various research levels (molecular, cellular, tissue, organ, system)...
June 16, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28625356/prognostic-markers-of-outcome-in-patients-undergoing-infra-inguinal-revascularisation-a-prospective-observational-pilot-study
#13
M Kanakaraj, D R Yates, R J T Wilson, M L Baroni, S J Davies
OBJECTIVES: The aim was to investigate whether cardiopulmonary exercise testing (CPET) variables derived from cycle and arm ergonometry correlate, and whether CPET variables and pre-operative N-terminal pro-brain natriuretic peptide (NT-proBNP) have prognostic significance and if the combination of the two has incremental value. METHODS: A prospective observational pilot study was conducted; 70 patients who underwent infra-inguinal bypass surgery were recruited...
June 15, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28624654/insulin-signaling-an-opportunistic-target-to-minify-risk-of-alzheimer-s-disease
#14
REVIEW
Rohit Pardeshi, Nityanand Bolshette, Kundlik Gadhave, Ashutosh Ahire, Sahabuddin Ahmed, Tommaso Cassano, Veer Bala Gupta, Mangala Lahkar
Alzheimer's disease (AD) is progressive neurodegenerative disorder characterized by accumulation of senile plaques, neurofibrillary tangles (NFT) and neurodegeneration. The diabetes mellitus (DM) is one of the risk factors for AD pathogenesis by impairment in insulin signaling and glucose metabolism in central as well as peripheral system. Insulin resistance, impaired glucose and lipid metabolism lead to the Aβ (Aβ) aggregation, Tau phosphorylation, mitochondrial dysfunction, oxidative stress, protein misfolding, memory impairment and also mark over Aβ transport through central to peripheral and vice versa...
May 30, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28623882/peripheral-venous-catheter-related-bloodstream-infection-is-associated-with-severe-complications-and-potential-death-a-retrospective-observational-study
#15
Akihiro Sato, Itaru Nakamura, Hiroaki Fujita, Ayaka Tsukimori, Takehito Kobayashi, Shinji Fukushima, Takeshi Fujii, Tetsuya Matsumoto
BACKGROUND: The purpose of this study was to identify the clinical characteristics and outcomes of peripheral vascular catheter-related bloodstream infections (PVC-BSIs) and determine the risk of severe complications or death. METHODS: We performed a retrospective observational study from June 2010 to April 2015 at two regional university-affiliated hospitals in Tokyo. We studied the clinical manifestations, underlying diseases, laboratory results, treatment methods, recurrence rates, and complications in 62 hospitalized patients diagnosed with PVC-BSIs by positive blood cultures...
June 17, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28623351/regulation-of-angiopoietin-signalling-by-soluble-tie2-ectodomain-and-engineered-ligand-trap
#16
Deborah O A Alawo, Tariq A Tahir, Marlies Fischer, Declan G Bates, Svetlana R Amirova, Nicholas P J Brindle
Angiopoietin-1 (Angpt1) is a glycoprotein ligand important for maintaining the vascular system. It signals via a receptor tyrosine kinase expressed on the surface on endothelial cells, Tie2. This receptor can undergo regulated ectodomain cleavage that releases the ligand-binding domain (sTie2) into the circulation. The concentration of sTie2 is increased in a range of conditions, including peripheral arterial disease and myocardial infarction, where it has been suggested to bind and block Angpt1 resulting in vascular dysfunction...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28622745/sex-differences-in-vascular-stiffness-and-relationship-to-the-risk-of-renal-functional-decline-in-patients-with-type-2-diabetes
#17
Kenneth A Earle, Lauren Ng, Sarah White, Karima Zitouni
BACKGROUND: Recent data suggest that the higher risk of end-stage renal disease in women compared with men is associated with waist circumference. We investigated whether vascular stiffness which is linked to visceral fat accumulation is gender specific and associated with a loss in renal function. METHODS: We studied 166 patients with type 2 diabetes at high risk of progressive renal disease. A vascular stiffness index was derived from measurement of the peripheral arterial pulse waveform using infrared finger photoplethysmography...
July 2017: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/28621057/prospective-evaluation-of-toceranib-phosphate-in-metastatic-canine-osteosarcoma
#18
T Laver, C A London, D M Vail, B J Biller, J Coy, D H Thamm
Efficacious therapies for measurable metastatic canine osteosarcoma (OSA) are generally lacking. Preliminary retrospective studies suggested that approximately 50% of dogs with measurable metastatic OSA experienced clinical benefit (objective response or clinically meaningful disease stabilisation) following toceranib (TOC) treatment. The purpose of this clinical trial was to prospectively evaluate the clinical outcome following TOC treatment in dogs with measurable pulmonary metastatic OSA. A secondary goal was to identify potential biomarkers of clinical benefit by measuring changes in plasma vascular endothelial growth factor (VEGF) and circulating regulatory T-cell (Treg) percentage...
June 15, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28620384/measuring-leukocyte-adhesion-to-primary-endothelial-cells-after-photon-and-charged-particle-exposure-with-a-dedicated-laminar-flow-chamber
#19
Nadine Erbeldinger, Felicitas Rapp, Svetlana Ktitareva, Philipp Wendel, Anna S Bothe, Till Dettmering, Marco Durante, Thomas Friedrich, Bianca Bertulat, Stephanie Meyer, M C Cardoso, Stephanie Hehlgans, Franz Rödel, Claudia Fournier
The vascular endothelium interacts with all types of blood cells and is a key modulator of local and systemic inflammatory processes, for example, in the adhesion of blood leukocytes to endothelial cells (EC) and the following extravasation into the injured tissue. The endothelium is constantly exposed to mechanical forces caused by blood flow, and the resulting shear stress is essential for the maintenance of endothelial function. Changes in local hemodynamics are sensed by EC, leading to acute or persistent changes...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28619097/adipose-tissue-derived-stromal-vascular-fraction-in-regenerative-medicine-a-brief-review-on-biology-and-translation
#20
REVIEW
Pablo Bora, Anish S Majumdar
Adipose/fat tissue provides an abundant source of stromal vascular fraction (SVF) cells for immediate administration and can also give rise to a substantial number of cultured, multipotent adipose-derived stromal cells (ADSCs). Recently, both SVF and ADSCs have gained wide-ranging translational significance in regenerative medicine. Initially used for cosmetic breast enhancement, this mode of treatment has found use in many diseases involving immune disorders, tissue degeneration, and ischaemic conditions. In this review, we try to address several important aspects of this field, outlining the biology, technology, translation, and challenges related to SVF- and ADSC-based therapies...
June 15, 2017: Stem Cell Research & Therapy
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