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https://www.readbyqxmd.com/read/28547914/the-branching-pattern-of-the-brachiocephalic-trunk-in-the-donkey-equus-asinus
#1
G Akbari, B Asadiahranjani, N Goodarzi, S Shokrollahi
Donkeys are a member of the horse family (Equidae) and share a common ancestor. However, in morphological terms, donkeys and horses are regarded as two separate subgenus. Given variations in the branching pattern of the brachiocephalic trunk (BCT) in different species of animals and the use of donkeys in anatomy courses at colleges of veterinary medicine, we conducted this study in order to investigate the branching patterns of BCT and to describe detailed morphological information regarding donkeys. Seventeen mature donkeys were examined following euthanasia by exsanguination from the common carotid artery under general anaesthesia...
May 26, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28547651/photoplethysmography-for-blood-volumes-and-oxygenation-changes-during-intermittent-vascular-occlusions
#2
T Y Abay, P A Kyriacou
Photoplethysmography (PPG) is an optical technique that measures blood volume variations. The main application of dual-wavelength PPG is pulse oximetry, in which the arterial oxygen saturation (SpO[Formula: see text]) is calculated noninvasively. However, the PPG waveform contains other significant physiological information that can be used in conjunction to SpO[Formula: see text] for the assessment of oxygenation and blood volumes changes. This paper investigates the use of near infrared spectroscopy (NIRS) processing techniques for extracting relative concentration changes of oxygenated ([Formula: see text]HbO[Formula: see text]), reduced ([Formula: see text]HHb) and total haemoglobin ([Formula: see text]tHb) from dual-wavelength PPG signals during intermittent pressure-increasing vascular occlusions...
May 25, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28547001/new-mathematical-model-for-the-surface-area-of-the-left-ventricle-by-the-truncated-prolate-spheroid
#3
José Sérgio Domingues, Marcos de Paula Vale, Carlos Barreira Martinez
The main aim of this study was the formula application of the superficial area of a truncated prolate spheroid (TPS) in Cartesian coordinates in obtaining a cardiac parameter that is not so much discussed in literature, related to the left ventricle (LV) surface area of the human heart, by age and sex. First we obtain a formula for the area of a TPS. Then a simple mathematical model of association of the axes measures of a TPS with the axes of the LV is built. Finally real values of the average dimensions of the humans LV are used to measure surface areas approximations of this heart chamber...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28545980/altered-brain-function-in-new-onset-childhood-acute-lymphoblastic-leukemia-before-chemotherapy-a-resting-state-fmri-study
#4
Zhanqi Hu, Dongfang Zou, Huirong Mai, Xiuli Yuan, Lihong Wang, Yue Li, Jianxiang Liao, Liwei Liu, Guosheng Liu, Hongwu Zeng, Feiqiu Wen
OBJECTIVE: Cognitive impairments had been reported in childhood acute lymphoblastic leukemia, what caused the impairments needed to be demonstrated, chemotherapy-related or the disease itself. The primary aim of this exploratory investigation was to determine if there were changes in brain function of children with acute lymphoblastic leukemia before chemotherapy. METHODS: In this study, we advanced a measure named regional homogeneity to evaluate the resting-state brain activities, intelligence quotient test was performed at same time...
May 22, 2017: Brain & Development
https://www.readbyqxmd.com/read/28545857/different-valsalva-manoeuvre-procedures-for-the-diagnosis-of-right-to-left-shunt-by-contrast-transcranial-doppler
#5
Chao Liu, Teng Lu, Ni-Na Zhai, Ning Bu, Hu-Qing Wang, Meng-Yi Chen, Hai-Qin Wu
The main purpose of this study was to compare two contrast agent injection times during the Valsalva manoeuvre (VM) for the diagnosis of right-to-left shunt using contrast-transcranial Doppler (c-TCD). In total, 992 consecutive patients underwent testing. All patients underwent step 1, and then a coin toss was used to determine the order of steps 2 and 3. The following testing steps were repeated twice: (1) a contrast agent (CA) was infused at rest (CA at rest testing); (2) the VM was initiated immediately after CA injection and released 10 s after CA injection (CA pre-VM testing); and (3) a CA was injected 5 s after initiating the VM, which was released 5 s after CA injection (CA mid-VM testing)...
May 22, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28545280/-impacts-of-early-metoprolol-intervention-on-connexin-43-and-phosphorylated-connexin-43-expression-in-rabbits-with-experimental-myocardial-infarction
#6
M Zhou, Q Lu, J Q Jiang, Z N Chen, Z G Gong, Z G Li, W W Fu, S F Ding
Objective: To investigate the early intervention effects of metoprolol on connexin 43(Cx43) and phosphorylated Cx43 (p-Cx43) expression in rabbits with post myocardial infarction. Methods: A total of 24 adult male New Zealand white rabbits were divided into sham group (n=6), early treatment group(n=6), routine treatment group(n=6), and myocardial infarction group(n=6) with a randomized block design blocked by weight. Myocardial infarction was induced by left anterior descending coronary artery (LAD) ligation...
April 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28544218/genome-wide-mediation-analysis-of-psychiatric-and-cognitive-traits-through-imaging-phenotypes
#7
Xuan Bi, Liuqing Yang, Tengfei Li, Baisong Wang, Hongtu Zhu, Heping Zhang
Heritability is well documented for psychiatric disorders and cognitive abilities which are, however, complex, involving both genetic and environmental factors. Hence, it remains challenging to discover which and how genetic variations contribute to such complex traits. In this article, they propose to use mediation analysis to bridge this gap, where neuroimaging phenotypes were utilized as intermediate variables. The Philadelphia Neurodevelopmental Cohort was investigated using genome-wide association studies (GWAS) and mediation analyses...
May 22, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28542803/early-gestational-age-at-preeclampsia-onset-is-associated-with-subclinical-atherosclerosis-12-years-after-delivery
#8
Martin Christensen, Camilla Skovhus Kronborg, Rasmus Kirkeskov Carlsen, Nikolaj Eldrup, Ulla Breth Knudsen
Women with a history of preeclampsia have increased risk of cardiovascular disease later in life. However, it is unclear if early gestational age at preeclampsia onset is associated with higher cardiovascular disease risk. This study aimed to test the association between gestational age at preeclampsia onset (including the early-onset/late-onset preeclampsia distinction) and subclinical atherosclerosis and arterial stiffness in age-matched women 12 years after index pregnancy MATERIAL AND METHODS: Eligible participants were identified in two Danish registries...
May 23, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28542658/-cardiovascular-disease-in-pediatric-patients-under-chronic-peritoneal-dialysis
#9
Paula Lehmann F, Francisco Cano Sc
Peritoneal dialysis (PD) is the most common renal replacement therapy used in pediatric patients with end stage renal disease. This population has a mortality rate 1,000 times greater compare to pediatric population, mainly due to cardiovascular causes. OBJECTIVE: To characterize pediatric patients on chronic PD in relation to dialysis and cardiovascular outcome. PATIENTS AND METHODS: Cross sectional study. Patients in stable PD according to DOQI criteria were selected...
April 2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28542320/the-ik1-kir2-1-channel-agonist-zacopride-prevents-and-cures-acute-ischemic-arrhythmias-in-the-rat
#10
Xu-Wen Zhai, Li Zhang, Yun-Fei Guo, Ying Yang, Dong-Ming Wang, Yan Zhang, Pan Li, Yi-Fan Niu, Qi-Long Feng, Bo-Wei Wu, Ji-Min Cao, Qing-Hua Liu
Arrhythmogenesis in acute myocardial infarction (MI) is associated with depolarization of resting membraine potential (RMP) and decrease of inward rectifier potassium current (IK1) in cardiomyocytes. However, clinical anti-arrhythmic agents that primarily act on RMP by enhancing the IK1 channel are not currently available. We hypothesized that zacopride, a selective and moderate agonist of the IK1/Kir2.1 channels, prevents and cures acute ischemic arrhythmias. To test this viewpoint, adult Sprague-Dawley (SD) rats were subjected to MI by ligating the left main coronary artery...
2017: PloS One
https://www.readbyqxmd.com/read/28539875/trait-rumination-influences-neural-correlates-of-the-anticipation-but-not-the-consumption-phase-of-reward-processing
#11
Natália Kocsel, Edina Szabó, Attila Galambos, Andrea Édes, Dorottya Pap, Rebecca Elliott, Lajos R Kozák, György Bagdy, Gabriella Juhász, Gyöngyi Kökönyei
Cumulative evidence suggests that trait rumination can be defined as an abstract information processing mode, which leads people to constantly anticipate the likely impact of present events on future events and experiences. A previous study with remitted depressed patients suggested that enhanced rumination tendencies distort brain mechanisms of anticipatory processes associated with reward and loss cues. In the present study, we explored the impact of trait rumination on neural activity during reward and loss anticipation among never-depressed people...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28539820/bifidobacterium-pseudocatenulatum-cect-7765-supplementation-restores-altered-vascular-function-in-an-experimental-model-of-obese-mice
#12
María D Mauricio, Eva Serna, María Leonor Fernández-Murga, Jesica Portero, Martín Aldasoro, Soraya L Valles, Yolanda Sanz, José M Vila
Aims.Bifidobacterium pseudocatenulatum CECT 7765 improves metabolic and immunological altered functions in high fat fed mice, however little is known about the effects of potential probiotics on vascular reactivity. The aim of the present study was to investigate the effects of a potential probiotic strain, Bifidobacterium pseudocatenulatum CECT 7765, on vascular response in obese mice. Methods. Aorta samples were obtained from mice, which were divided into three groups: a control group, receiving a standard diet; an obese group, receiving a high-fat diet; and an obese group receiving high-fat diet and a daily dose of B...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28539643/myostatin-a-profibrotic-factor-and-the-main-inhibitor-of-striated-muscle-mass-is-present-in-the-penile-and-vascular-smooth-muscle
#13
I Kovanecz, M Masouminia, R Gelfand, D Vernet, J Rajfer, N F Gonzalez-Cadavid
Myostatin is present in striated myofibers but, except for myometrial cells, has not been reported within smooth muscle cells (SMC). We investigated in the rat whether myostatin is present in SMC within the penis and the vascular wall and, if so, whether it is transcriptionally expressed and associated with the loss of corporal SMC occurring in certain forms of erectile dysfunction (ED). Myostatin protein was detected by immunohistochemistry/fluorescence and western blots in the perineal striated muscles, and also in the SMC of the penile corpora, arteries and veins, and aorta...
May 25, 2017: International Journal of Impotence Research
https://www.readbyqxmd.com/read/28539596/intravascular-ultrasound-guidance-improves-the-long-term-prognosis-in-patients-with-unprotected-left-main-coronary-artery-disease-undergoing-percutaneous-coronary-intervention
#14
Jian Tian, Changdong Guan, Wenyao Wang, Kuo Zhang, Jue Chen, Yongjian Wu, Hongbing Yan, Yanyan Zhao, Shubin Qiao, Yuejin Yang, Gary S Mintz, Bo Xu, Yida Tang
This study compared the long term outcomes in patients with unprotected left main coronary artery (LMCA) disease who underwent stenting under the guidance of intravascular ultrasound (IVUS) or conventional angiography at a large single center. The primary outcome was the composite of all-cause death and myocardial infarction (MI) at 3 years. Target vessel revascularization (TVR) at 3 years was one of the secondary outcomes. Between January 2004 and December 2011, a total of 1,899 patients who underwent IVUS-guided (n = 713, 37...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28539567/syntax-score-ii-predicts-long-term-mortality-in-patients-who-underwent-left-main-percutaneous-coronary-intervention-treated-with-second-generation-drug-eluting-stents
#15
Jiqiang He, Hua Zhao, Xianpeng Yu, Quan Li, Shuzheng Lv, Fang Chen, Tengyong Jiang
The aim of this study was to evaluate the capacity of the SYNTAX Score-II (SS-II) to predict long-term mortality in patients undergoing left main percutaneous coronary intervention (LM-PCI) treated with second-generation drug-eluting stents (DES).Data from 487 consecutive patients with de novo left main coronary artery disease undergoing PCI were retrospectively studied. The patients were divided into tertiles according to the SS-II: low SS-II tertile (SS-II ≤ 22), intermediate SS-II tertile (SS-II of 23 to 30), and high SS-II tertile (SS-II ≥ 30)...
May 23, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28539300/-clinical-outcomes-of-intravascular-ultrasound-in-guiding-the-treatment-of-non-left-main-intermediate-coronary-lesions-for-patients-with-acute-coronary-syndrome
#16
Hong-Bin Liang, Qian Guo, Xin-Lu Zhang, Xue-Wei Liu, Yong-Zhen Tang, Wei-Yu Chen, Yu-Qing Hou, Jian-Cheng Xiu
OBJECTIVE: To evaluate the long-term clinical outcomes of intravascular ultrasound(IVUS) in guiding the treatment of non-left main intermediate coronary lesions for patients of acute coronary syndrome (ACS). METHODS: A total of 25 patients with intermediate coronary lesions(stenosis of 40%-70%) confirmed by coronary angiography were performed with IVUS. When MLA≥4 mm(2), we deferred the PCI treatment and performed optimal medical treatment (OMT). The patient were followed up for 12 month...
May 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28538521/examination-of-the-validity-of-the-atlas-informed-approach-to-functional-parcellation-a-resting-functional-mri-study
#17
Tien-Wen Lee, Shao-Wei Xue
With the advancement in MRI, functional parcellation (FP) of brain structure(s) has become an important topic. However, the large number of voxels is a major obstacle. A-priori partitioning of the brain into several regions of interest (ROIs) is the main data-reduction strategy to simplify brain informatics. This study aims to examine the validity of ROI-based approach to FP by exploring the concordance of the relative distance structures between voxel-wise (raw data) and atlas-informed analyses. Structural and resting state functional MRI (rfMRI) scans of 26 right-handed healthy individuals were selected from the Rockland dataset...
May 19, 2017: Neuroreport
https://www.readbyqxmd.com/read/28538393/a-comparison-of-extraluminal-and-intraluminal-use-of-the-uniblocker-in-left-thoracic-surgery-a-consort-compliant-article
#18
Zhuo Liu, WenSheng He, QianQian Jia, XiaoChun Yang, ShuJuan Liang, XiuLi Wang
BACKGROUND: The aim of this study was to assess the feasibility and safety issues concerning extraluminal use of the Uniblocker for one-lung ventilation (OLV) in the left thoracic surgery. METHODS: Forty patients undergoing elective left thoracic surgery were included in this study, and all patients were randomly allocated to extraluminal use of Uniblocker group (E group, n = 20) or intraluminal use of Uniblocker group (I group, n = 20). Time for intubation, time for verification of the correct position of Uniblocker, incidence of Uniblocker displacement, index of pulmonary collapse, mean arterial pressure, heart rate, peak airway pressure, oxygen saturation in two-lung ventilation, and 30 minutes after OLV, bronchial damage after OLV, sore throat, and hoarseness postoperative were recorded...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28538271/pulmonary-transplant-salvage-using-ultrasound-assisted-thrombolysis-of-subacute-occlusive-main-pulmonary-artery-embolus
#19
John R Spratt, Prashant Shrestha, Gabriel Loor, Jagadish M Patil, Marshall I Hertz, Gosta B Pettersson, Michael S Rosenberg
A 53-year-old woman who underwent bilateral lung transplantation 14 months before presented with 2 to 3 weeks of severe exertional dyspnea. Workup revealed a complete embolic occlusion of her left main pulmonary artery related to a femoral deep venous thrombosis. The occlusion did not respond to systemic anticoagulation, and a trial of catheter-directed thrombolysis was pursued. Flow to the left lower lobe was restored after 2 days of thromobolytic therapy. The patient is alive and well at more than 1 year of follow-up...
May 19, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28538020/incidence-and-risk-factors-of-hypoxemia-during-interventional-rigid-bronchoscopy-under-spontaneous-assisted-ventilation
#20
Saowapark Chumpathong, Jamsak Tscheikuna, Thanatporn Boonsombat, Saipin Muangman, Choopong Luansritisakul
BACKGROUND: Interventional rigid bronchoscopy for tracheobronchial stenosis can be performed under total intravenous anesthesia and spontaneous-assisted ventilation. Intraoperative hypoxemia can occur during this procedure, but the incidence and risk factors have not yet been determined. MATERIALS AND METHODS: Medical records of patients who underwent rigid bronchoscopy for the treatment of tracheobronchial stenosis under total intravenous anesthesia and spontaneous-assisted ventilation during the study period from January 2011 to December 2012 were retrospectively reviewed...
May 19, 2017: Journal of Bronchology & Interventional Pulmonology
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