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https://www.readbyqxmd.com/read/28633352/aortopulmonary-window-results-of-repair-beyond-infancy%C3%A2
#1
Sachin Talwar, Bharat Siddharth, Saurabh Kumar Gupta, Shiv Kumar Choudhary, Shyam Sunder Kothari, Rajnish Juneja, Anita Saxena, Balram Airan
OBJECTIVES: To study the anatomic and haemodynamic data and results of surgery in patients undergoing surgical repair of aortopulmonary window beyond infancy. METHODS: Between July 2005 and December 2015, 23 patients, older than 1 year undergoing surgery for aortopulmonary window were analysed retrospectively. Postoperative clinical and echocardiography follow-up were performed. RESULTS: Median age and weight at repair was 4 years (range 14 months-12 years) and 12 kg (range 3...
June 13, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28632498/can-early-ultrasonography-explain-the-lower-miscarriage-rates-in-twin-as-compared-to-singleton-pregnancies-following-assisted-reproduction
#2
Ana Póvoa, Alexandra Matias, Pedro Xavier, Isaac Blickstein
OBJECTIVE: To compare first trimester 2D conventional and 3D power Doppler angiography measures in twins and singletons following assisted reproduction. METHODS: We prospectively evaluated 50 singleton and 47 twin pregnancies that eventually ended in live births. Patients were recruited from a single assisted reproductive technology (ART) center with standard treatment protocols. Obstetric ultrasound was performed at 8-9 weeks +6 days. Intervillous flow, uteroplacental circulation and uterine artery pulsatility (PI) and resistance index (RI) using two-dimensional (2D) ultrasound examination were evaluated...
June 20, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28632147/crossover-iliofemoral-bypass-graft-through-tension-free-abdominal-wall-repair-mesh
#3
Mircea Muresan, Ovidiu Jimborean, Gabriela Jimborean, Radu Neagoe, Serban Bancu, Muresan Simona, Cristian Borz
INTRODUCTION: In vascular surgery the crossover iliofemoral bypass grafting is a well-known surgical technique. In general surgery the repair of an abdominal defect using a Polypropylene mesh is also a standard procedure. A particular technique is defined by the performance of these 2 separate procedures inside a single operation in which the crossover arterial graft is directed from the retroperitoneal space toward the contra-lateral femoral bifurcation through a Polypropylene mesh which closes the musculoaponeurotic layers of the abdominal wall...
June 8, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28631764/-hemodynamic-effects-of-positive-end-expiratory-pressure
#4
Marco Marini, Giorgio Caretta, Fabio Vagnarelli, Fabiana Lucà, Emilia Biscottini, Alberto Lavorgna, Vincenza Procaccini, Letizia Riva, Gabriele Vianello, Nadia Aspromonte, Andrea Mortara, Renata De Maria, Piera Capasso, Serafina Valente, Michele Massimo Gulizia
The application of a positive end-expiratory pressure (PEEP), the cornerstone of noninvasive ventilation (NIV), causes hemodynamic changes in the cardiovascular system. To understand the benefits of NIV it is necessary to resume concepts of cardiovascular physiology and pathophysiology about cardiac function determinants, venous return, ventricular interdependence and heart-lung interaction, and to understand how PEEP interacts with them. The hemodynamic effects of PEEP are mediated by the increase in transpulmonary pressure, which results in increased pulmonary vascular resistance and in an attending small reduction of venous return in conditions of euvolemia, in a substantial reduction of left ventricular afterload and a potential positive effect on left ventricular stroke volume...
June 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28631352/overexpressing-stamp2-attenuates-adipose-tissue-angiogenesis-and-insulin-resistance-in-diabetic-apoe-ldlr-mouse-via-a-ppar%C3%AE-cd36-pathway
#5
Feng Wang, Lu Han, Ran-Ran Qin, Yao-Yuan Zhang, Di Wang, Zhi-Hao Wang, Meng-Xiong Tang, Yun Zhang, Ming Zhong, Wei Zhang
The aim of this study was to investigate whether overexpression of STAMP2 improves insulin resistance by regulating angiogenesis in adipose tissues. The characteristics of diabetic mice were measured by serial metabolite and pathology tests. Samples were obtained from epididymal, subcutaneous and brown adipose tissues. Histological and morphological analysis demonstrated that STAMP2 gene overexpression reduced adipocyte size, angiogenesis in epididymal and brown adipose tissues. On aortic ring assay, microvessels sprouting from aortas were significantly inhibited after STAMP2 gene overexpression...
June 19, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28629252/study-of-composite-vascular-scaffold-combining-with-differentiated-vsmc-and-vec-like-cells-in%C3%A2-vitro-and-in%C3%A2-vivo
#6
Xuqian Liu, Jie Wang, Fusheng Dong, Peng Song, Hexiang Li, Yali Hou
Although research into the tissue engineering of vessels has proceeded at a tremendous pace, many deficiencies still need to be resolved. A well-adopted constructed vessel requires both functional and structural properties to stimulate the native vessel and resist stress and tension in vivo. In the present study, we developed a novel three-layer composite vascular scaffold consisting of differentiated vascular smooth muscle cell-, vascular endothelial cell-like cells, and a rabbit acellular vascular matrix (ACVM)-0...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28627793/increased-sympathetic-outflow-induces-adaptation-to-acute-experimental-pain
#7
Lior Dayan, Uri Hochberg, Hadas Nahman-Averbuch, Silviu Brill, Jacob N Ablin, Giris Jacob
BACKGROUND: There are interrelationships between the autonomic nervous system and pain. This study aims to explore the effect of different autonomic manipulations on pain perception and modulation. METHODS: Twenty healthy subjects (10 men and 10 women, mean age 25±3) participate in this single-blinded, semi-randomized, controlled study, which included 2 study visits. Warm and heat pain thresholds, conditioned pain modulation and pain adaptation were tested before and after administration of phenylephrine, clonidine, yohimbine and saline...
June 19, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28627678/bevacizumab-counteracts-vegf-dependent-resistance-to-erlotinib-in-an-egfr-mutated-nsclc-xenograft-model
#8
Chinami Masuda, Mieko Yanagisawa, Keigo Yorozu, Mitsue Kurasawa, Koh Furugaki, Nobuyuki Ishikura, Toshiki Iwai, Masamichi Sugimoto, Kaname Yamamoto
Erlotinib, an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI), shows superior efficacy in patients with non-small cell lung cancer (NSCLC) harboring activating EGFR mutations (EGFR Mut+). However, almost all tumors eventually develop resistance to erlotinib. Recently, the Phase II JO25567 study reported significant prolongation of progression-free survival (PFS) by erlotinib plus bevacizumab combination compared with erlotinib in EGFR Mut+ NSCLC. Herein, we established a preclinical model which became refractory to erlotinib after long-term administration and elucidated the mode of action of this combination...
June 8, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28626727/mast-cell-infiltration-in-human-brain-metastases-modulates-the-microenvironment-and-contributes-to-the-metastatic-potential
#9
Ananya Roy, Sylwia Libard, Holger Weishaupt, Ida Gustavsson, Lene Uhrbom, Göran Hesselager, Fredrik J Swartling, Fredrik Pontén, Irina Alafuzoff, Elena Tchougounova
Metastatic brain tumors continue to be a clinical problem, despite new therapeutic advances in cancer treatment. Brain metastases (BMs) are among the most common mass lesions in the brain that are resistant to chemotherapies, have a very poor prognosis, and currently lack any efficient diagnostic tests. Predictions estimate that about 40% of lung and breast cancer patients will develop BM. Despite this, very little is known about the immunological and genetic aberrations that drive tumorigenesis in BM. In this study, we demonstrate the infiltration of mast cells (MCs) in a large cohort of human BM samples with different tissues of origin for primary cancer...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28626187/efficacy-of-intravenous-cyclophosphamide-pulse-therapy-for-p-glycoprotein-expressing-b-cell-associated-active-true-renal-lupus-vasculitis-in-lupus-nephritis
#10
Akio Kawabe, Shizuyo Tsujimura, Kazuyoshi Saito, Yoshiya Tanaka
True renal lupus vasculitis (TRLV), a vascular lesion usually associated with proliferative lupus nephritis (LN), is resistant to conventional treatments. The expression of P-glycoprotein (P-gp) on activated lymphocytes causes drug resistance. We herein report a patient with TRLV, minimal change LN, overexpression of P-gp on peripheral B cells, and accumulation of P-gp(+) B cells at the site of TRLV. High-dose corticosteroids combined with intravenous cyclophosphamide pulse therapy resulted in clinical remission and the long-term normal renal function...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28626160/effect-of-anemia-on-cardiovascular-hemodynamics-therapeutic-strategy-and-clinical-outcomes-in-patients-with-heart-failure-and-hemodynamic-congestion
#11
Muneyoshi Tanimura, Kaoru Dohi, Naoki Fujimoto, Keishi Moriwaki, Taku Omori, Yuichi Sato, Emiyo Sugiura, Naoto Kumagai, Shiro Nakamori, Tairo Kurita, Eitaro Fujii, Norikazu Yamada, Masaaki Ito
BACKGROUND: We investigated the effect of anemia on cardiovascular hemodynamics, therapeutic strategies and clinical outcomes in heart failure (HF) patients.Methods and Results:We divided 198 consecutive HF patients who underwent right heart catheterization before in-hospital HF treatment into 2 groups according to the presence or absence of hemodynamic congestion (HC: mean pulmonary capillary wedge pressure ≥15 mmHg and/or mean right atrial pressure ≥10 mmHg). The hemoglobin level correlated with the cardiac index (CI) and systemic vascular resistance index (SVRI) (r=-0...
June 17, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28626080/cyp2c44-mediated-decrease-of-15-hete-exacerbates-pulmonary-hypertension
#12
Gábor Á Fülöp, Andriy Yabluchanskiy
Pulmonary hypertension (PH) is a progressive disease characterized by elevated pulmonary arterial pressure and pulmonary vascular resistance. According to latest estimations, a PH incidence accounts for 1% of total global population (up to 5 million people) and the median survival rate for patients diagnosed with PH is predicted at 2.8 years. Emerging evidence suggests an important role for cytochrome P450 in the development and progression of PH, as a newer member of cytochrome family Cyp2c44 has been recently implicated in mediating hypoxia-induced pulmonary artery remodeling...
June 16, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28625450/vasoplegic-syndrome-an-update-on-perioperative-considerations
#13
REVIEW
Henry Liu, Ling Yu, Longqiu Yang, Michael S Green
Vasoplegic syndrome (VS) is increasingly recognized as an important clinical entity in perioperative medicine. VS is characterized by significant arterial hypotension, normal or high cardiac output, low systemic vascular resistance, and increased requirements for intravenous volume and vasopressors. Tremendous variations exist regarding incidence reported in the literature and management at different institutions; and the incidence of VS is likely significantly higher than many anesthesiologists believe. Thus the aims of this article are to review the pertinent aspects related to VS and alert clinical anesthesiologists to this under-recognized yet very challenging clinical condition...
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28625306/spinal-induced-hypotension-incidence-mechanisms-prophylaxis-and-management-summarizing-20-years-of-research
#14
REVIEW
Jennifer E Lee, Ronald B George, Ashraf S Habib
Hypotension commonly occurs in parturients undergoing cesarean delivery under spinal anesthesia. This leads to maternal and neonatal adverse outcomes, including maternal nausea and vomiting and fetal acidosis, and might even lead to cardiovascular collapse if not treated. Arterial dilatation and reduction in systemic vascular resistance are the major contributors to spinal-induced hypotension. Therefore, strategies aimed at expanding the intravascular volume with fluid loading or increasing venous return with lower extremities mechanical compression and lateral tilt have had limited effectiveness in the management of spinal-induced hypotension...
March 2017: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/28625127/the-hippocampal-autophagic-machinery-is-depressed-in-the-absence-of-the-circadian-clock-protein-per1-that-may-lead-to-vulnerability-during-cerebral-ischemia
#15
Abdelhaq Rami, Oliver Rawashdeh
BACKGROUND: Autophagy is an intracellular bulk self-degrading process in which cytoplasmic contents of abnormal proteins and excess or damaged organelles are sequestered into autophagosomes, and degraded upon fusion with lysosomes. Although autophagy is generally considered to be pro-survival, it also functions in cell death processes. We recently reported on the hippocampal higher vulnerability to cerebral ischemia in mice lacking the circadian clock protein PERIOD1 (PER1), a phenomenon we found to be linked to a PER1-dependent modulation of the expression patterns of apoptotic/autophagic markers...
June 18, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28624654/insulin-signaling-an-opportunistic-target-to-minify-risk-of-alzheimer-s-disease
#16
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/28623267/a-new-paradigm-for-antiangiogenic-therapy-through-controlled-release-of-bevacizumab-from-plga-nanoparticles
#17
Flávia Sousa, Andrea Cruz, Pedro Fonte, Inês Mendes Pinto, Maria Teresa Neves-Petersen, Bruno Sarmento
Monoclonal antibodies have deserved a remarkable interest for more than 40 years as a vital tool for the treatment of various diseases. Still, there is a raising interest to develop advanced monoclonal antibody delivery systems able to tailor pharmacokinetics. Bevacizumab is a humanized immunoglobulin IgG1 used in antiangiogenic therapies due to its capacity to inhibit the interaction between vascular endothelial growth factor and its receptor. However, bevacizumab-based antiangiogenic therapy is not always effective due to poor treatment compliance associated to multiples administrations and drug resistance...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623008/yucca-schidigera-can-promote-rabbit-growth-fecundity-affect-the-release-of-hormones-in-vivo-and-in-vitro-induce-pathological-changes-in-liver-and-reduce-ovarian-resistance-to-benzene
#18
Martina Földešiová, Andrej Baláži, Ľubica Chrastinová, Juraj Pivko, Jan Kotwica, Abdel Halim Harrath, Peter Chrenek, Alexander V Sirotkin
This study evaluated the effect of Yucca schidigera (YS) extract on the physiological, reproductive, and endocrine indexes of New Zealand White rabbit does. Six-week-old rabbit does were fed a standard diet (control group) or a diet enriched with 5 or 20g of Y powder extract per 100-kg feed mixture for 350days. The does were artificially inseminated after induction of superovulation. Weight gain; conception and kindling rate; viability of pups and mothers; histopathological state of liver and muscle; plasma levels of progesterone (P4), oxytocin (OT), and prostaglandin F (PGF); and the release of P4, insulin-like growth factor I (IGF-I), OT, and PGF by isolated ovarian fragments and their response to the addition of benzene were analyzed...
June 10, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28622685/increased-pdgfr-beta-and-vegfr-2-protein-levels-are-associated-with-resistance-to-platinum-based-chemotherapy-and-adverse-outcome-of-ovarian-cancer-patients
#19
Stefanie Avril, Yasemin Dincer, Katharina Malinowsky, Claudia Wolff, Sibylle Gündisch, Alexander Hapfelmeier, Melanie Boxberg, Holger Bronger, Karl-Friedrich Becker, Barbara Schmalfeldt
Despite frequent initial response rates of epithelial ovarian cancer to platinum-based chemotherapy the majority of patients develop drug resistance. Our aim was to evaluate differential expression of signaling-pathway proteins in platinum-sensitive versus platinum-resistant primary epithelial ovarian cancer specimens to identify predictive biomarkers for treatment response.192 patients were studied comprising of independent training (n = 89) and validation (n = 103) cohorts. Full-length proteins were extracted from paraffin-embedded samples including multiple regions per tumor to account for intratumoral heterogeneity...
June 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28622156/aerobic-versus-isometric-handgrip-exercise-in-hypertension-a-randomized-controlled-trial
#20
Nikolaos Pagonas, Stergios Vlatsas, Frederic Bauer, Felix S Seibert, Walter Zidek, Nina Babel, Peter Schlattmann, Timm H Westhoff
OBJECTIVES: Aerobic dynamic exercise reduces blood pressure (BP) and is broadly recommended by current American and European hypertension guidelines. Isometric exercise is currently not recommended, since data from only a few studies are available. We compare for the first time the effects of isometric handgrip training and aerobic exercise in a randomized controlled trial. METHODS: A total of 75 hypertensive patients were randomized to one of the following 12-week programmes: Isometric handgrip training five times weekly (two contractions of 2 min at 30% of maximal power with each arm); 'Sham-handgrip training' five times weekly (two contractions of 2 min at 5% of maximal power with each arm); Aerobic exercise training of 30 min three to five times per week...
June 15, 2017: Journal of Hypertension
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