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https://www.readbyqxmd.com/read/28324909/an-extrapericardial-minimally-invasive-approach-for-implantable-cardioverter-defibrillator
#1
Jeko M Madjarov, Michael G Katz, Brad Poole, Svetozar Madzharov, John M Fedor, Francis Robicsek
The indications for placement of an implantable cardioverter defibrillators (ICDs) have greatly expanded over the last years. However, standard transvenous approach is not suitable for a subset of patients who cannot benefit from ICD therapy. Here, we have demonstrated the feasibility and efficacy of extrapericardial ICD placement through a minimally invasive access in intact hearts as well as in postmyocardial infarction large animal models. Based on our data, we conclude that extrapericardial ICD placement is a feasible approach that may be a valuable alternative or adjunct to current defibrillator lead systems...
March 21, 2017: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/28324864/ventricular-wall-biomaterial-injection-therapy-after-myocardial-infarction-advances-in-material-design-mechanistic-insight-and-early-clinical-experiences
#2
REVIEW
Yang Zhu, Yasumoto Matsumura, William R Wagner
Intramyocardial biomaterial injection therapy for myocardial infarction has made significant progress since concept initiation more than 10 years ago. The interim successes and progress in the first 5 years have been extensively reviewed. During the last 5 years, two phase II clinical trials have reported their long term follow up results and many additional biomaterial candidates have reached preclinical and clinical testing. Also in recent years deeper investigations into the mechanisms behind the beneficial effects associated with biomaterial injection therapy have been pursued, and a variety of process and material parameters have been evaluated for their impact on therapeutic outcomes...
March 1, 2017: Biomaterials
https://www.readbyqxmd.com/read/28324761/chocolate-consumption-and-risk-of-stroke-among-men-and-women-a-large-population-based-prospective-cohort-study
#3
Jia-Yi Dong, Hiroyasu Iso, Kazumasa Yamagishi, Norie Sawada, Shoichiro Tsugane
BACKGROUND AND AIMS: Chocolate consumption may have a beneficial effect on cardiovascular health, but evidence from prospective cohort studies is still limited. We aimed to examine the prospective associations between chocolate consumption and risk of stroke among men and women in a large population-based cohort. METHODS: A total of 38,182 men and 46,415 women aged 44-76 years, and free of cardiovascular disease, diabetes, and cancer at baseline in 1995 and 1998, were followed up until the end of 2009 and 2010, respectively...
March 4, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28324264/reverse-locked-in-syndrome
#4
Pooja Raibagkar, Ram V Chavali, Tamara B Kaplan, Jennifer A Kim, Meaghan V Nitka, Sherry H-Y Chou, Brian L Edlow
BACKGROUND: Basilar artery occlusion can cause locked-in syndrome, which is characterized by quadriplegia, anarthria, and limited communication via eye movements. Here, we describe an uncommon stroke syndrome associated with endovascular recanalization of the top of the basilar artery: "reverse locked-in syndrome." METHODS: We report the case of a patient with atypical neurological deficits caused by acute ischemic stroke of the midbrain tegmentum. We perform neuroanatomic localization of the patient's infarcts by mapping the magnetic resonance imaging (MRI) data onto a brainstem atlas...
March 21, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28323971/n-acetylcysteine-prevents-low-t3-syndrome-and-attenuates-cardiac-dysfunction-in-a-male-rat-model-of-myocardial-infarction
#5
Tatiana Ederich Lehnen, Marcus Vinicius Santos, Adrio Lima, Ana Luiza Maia, Simone Magagnin Wajner
Nonthyroidal illness syndrome (NTIS) affects patients with myocardial infarction (MI). Oxidative stress has been implicated as a causative factor of NTIS, and reversed via N-acetylcysteine (NAC). Male Wistar rats submitted to left anterior coronary artery occlusion received NAC or placebo. Decreases in T3 levels were noted in MI-placebo at 10 and 28 days post-MI, but not in MI-NAC. Groups exhibited similar infarct areas whereas MI-NAC exhibited higher ejection fraction (EF) than MI-placebo. Left ventricular systolic (LVSd) and diastolic (LVDd) diameters were also preserved in MI-NAC, but not in MI-placebo...
February 17, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323949/plasma-arginine-asymmetric-dimethylarginine-ratio-and-incidence-of-cardiovascular-events-a-case-cohort-study
#6
Edward Yu, Miguel Ruiz-Canela, Frank B Hu, Clary B Clish, Dolores Corella, Jordi Salas-Salvadó, Adela Hruby, Montserrat Fitó, Liming Liang, Estefania Toledo, Emilio Ros, Ramón Estruch, Enrique Gómez-Gracia, Jose Lapetra, Fernando Arós, Dora Romaguera, Lluís Serra-Majem, Marta Guasch-Ferré, Dong D Wang, Miguel A Martínez-González
CONTEXT: Arginine, its methylated metabolites and other metabolites related to the urea cycle have been independently associated with cardiovascular risk, but the potential causal meaning of these associations (positive for some metabolites and negative for others) remains elusive due to a lack of studies measuring metabolite changes over time. OBJECTIVE: To examine the association between baseline and 1-year concentrations of urea cycle metabolites and cardiovascular disease in a case-cohort setting...
March 2, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323928/physical-activity-vitamin-d-and-incident-atherosclerotic-cardiovascular-disease-in-whites-and-blacks-the-aric-study
#7
Kathleen Chin, Di Zhao, Martin Tibuakuu, Seth S Martin, Chiadi E Ndumele, Roberta Florido, B Gwen Windham, Eliseo Guallar, Pamela L Lutsey, Erin D Michos
Context: Physical activity (PA) is associated with 25-hydroxyvitamin D [25(OH)D] levels. Both are associated with atherosclerotic cardiovascular disease (ASCVD), but their joint association with ASCVD risk is unknown. Objective: To examine the dose-response between PA and 25(OH)D, and to assess effect modification of 25(OH)D and PA with ASCVD risk. Design: Cross-sectional and prospective study using Poisson and linear regression. Setting: Community-dwelling Atherosclerosis Risk in Communities cohort...
February 17, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323876/pim1-minicircle-as-a-therapeutic-treatment-for-myocardial-infarction
#8
Nan Liu, Bingyan J Wang, Kathleen M Broughton, Roberto Alvarez, Sailay Siddiqi, Rebeca Loaiza, Nicky Nguyen, Pearl Quijada, Natalie Gude, Mark A Sussman
PIM1, a pro-survival gene encoding a serine/ threonine kinase, influences cell proliferation and survival. Modification of cardiac progenitor cells (CPCs) or cardiomyocytes with PIM1 using a lentivirus-based delivery method showed long-term improved cardiac function after myocardial infarction (MI). However, lentivirus based delivery methods have stringent FDA regulation with respect to clinical trials. To provide an alternative and low risk PIM1 delivery method, this study examined the use of a non-viral modified plasmid-minicircle (MC) as a vehicle to deliver PIM1 into mouse CPCs (mCPCs) in vitro and the myocardium in vivo...
2017: PloS One
https://www.readbyqxmd.com/read/28323841/detection-of-crossed-cerebellar-diaschisis-in-hyperacute-ischemic-stroke-using-arterial-spin-labeled-mr-imaging
#9
Koung Mi Kang, Chul-Ho Sohn, Seung Hong Choi, Keun-Hwa Jung, Roh-Eul Yoo, Tae Jin Yun, Ji-Hoon Kim, Sun-Won Park
BACKGROUND AND PURPOSE: Arterial spin-labeling (ASL) was recently introduced as a noninvasive method to evaluate cerebral hemodynamics. The purposes of this study were to assess the ability of ASL imaging to detect crossed cerebellar diaschisis (CCD) in patients with their first unilateral supratentorial hyperacute stroke and to identify imaging or clinical factors significantly associated with CCD. MATERIALS AND METHODS: We reviewed 204 consecutive patients who underwent MRI less than 8 hours after the onset of stroke symptoms...
2017: PloS One
https://www.readbyqxmd.com/read/28323685/ipsilateral-tremor-like-grasp-reaction-in-a-patient-with-ischemic-stroke
#10
Yuichiro Inatomi, Makoto Nakajima, Toshiro Yonehara, Yukio Ando
Reports of involuntary ipsilateral movements after a stroke are rare, and none have described a patient with both an instinctive grasp reaction and tremor-like movement ipsilateral to the acute stroke lesion. We here report such a patient. A 76-year-old right-handed woman with a past history of left thalamic hemorrhage developed left hemiparesis, an instinctive grasp reaction, and a peculiar involuntary movement of her right arm. This involuntary movement was stereotyped and sometimes rhythmical, with a groping or picking-like action...
March 2017: Cognitive and Behavioral Neurology: Official Journal of the Society for Behavioral and Cognitive Neurology
https://www.readbyqxmd.com/read/28323540/identification-of-multipotent-stem-cells-in-human-brain-tissue-following-stroke
#11
Kotaro Tatebayashi, Yasue Tanaka, Akiko Nakano-Doi, Rika Sakuma, Saeko Kamachi, Manabu Shirakawa, Kazutaka Uchida, Hiroto Kageyama, Toshinori Takagi, Shinichi Yoshimura, Tomohiro Matsuyama, Takayuki Nakagomi
Perivascular regions of the brain harbor multipotent stem cells. We previously demonstrated that brain pericytes near blood vessels also develop multipotency following experimental ischemia in mice, and that these ischemia-induced multipotent stem cells (iSCs) can contribute to neurogenesis. However, it is essential to understand the traits of iSCs in the post-stroke human brain for possible applications in stem cell-based therapies for stroke patients. Here we report for the first time that iSCs can be isolated from the post-stroke human brain...
March 21, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28320188/clinical-significance-of-changes-in-serum-neuroglobin-and-hif-1%C3%AE-concentrations-during-the-early-phase-of-acute-ischemic-stroke
#12
Lixia Xue, Hao Chen, Kaili Lu, Jiankang Huang, Hao Duan, Yuwu Zhao
BACKGROUND: Neuroglobin (NGB) has been described as a neuroprotective agent in cerebral ischemia, hypoxia inducible factor (HIF) has shown an important role in modulating hypoxic and ischemic injury, and therefore they have the potential to impact outcomes after acute ischemic stroke (AIS). Thus, we investigated early changes in the concentrations of serum NGB and HIF-1α after AIS and evaluated the relations of both NGB and HIF-1α to stroke severity and prognosis. METHODS: We prospectively measured the serum concentrations of NGB and HIF-1α in 40 patients with AIS at 24, 48, 72, and 96h after stroke...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28320141/functional-magnetic-resonance-imaging-responses-in-cadasil
#13
Ikreet Cheema, Aaron R Switzer, Cheryl R McCreary, Michael D Hill, Richard Frayne, Bradley G Goodyear, Eric E Smith
OBJECTIVES: The magnitude of the blood oxygen dependent level (BOLD) functional MRI (fMRI) response to visual stimulation is reduced in the small vessel disease cerebral amyloid angiopathy (CAA), reflecting impaired vascular reactivity. We determined whether BOLD responses were reduced in another small vessel disease, cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). METHODS: BOLD fMRI data were collected using a visual stimulus (contrast-reversing checkerboard) and motor task (finger-tapping)...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28320070/dexpramipexole-improves-bioenergetics-and-outcome-in-experimental-stroke
#14
Mirko Muzzi, Elisabetta Gerace, Daniela Buonvicino, Elisabetta Coppi, Francesco Resta, Laura Formentini, Riccardo Zecchi, Laura Tigli, Daniele Guasti, Martina Ferri, Emidio Camaioni, Alessio Masi, Domenico E Pellegrini-Giampietro, Guido Mannaioni, Daniele Bani, Anna M Pugliese, Alberto Chiarugi
BACKGROUND AND PURPOSE: To investigate the effects of dexpramipexole, a drug recently tested in ALS patients able to bind F1Fo ATP synthase and increase mitochondrial ATP production, on experimental ischemic brain injury. EXPERIMENTAL APPROACH: The effects of dexpramipexole on bioenergetics, Ca(2+) fluxes, electrophysiological functions and death were evaluated in primary neural cultures and hippocampal slices exposed to oxygen-glucose deprivation (OGD). The drug's impact on infarct volumes and neurological functions was also evaluated in mice subjected to proximal or distal MCAo...
March 20, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28320030/changes-in-regulatory-t-cell-levels-in-acute-cerebral-ischemia
#15
Xuerui Pang, Weidong Qian
Background Acute stroke causes intense and significant changes in the immune system as well as in the number and the ratio of various immune cells. Material and Methods Several large-scale studies have shown that ischemic stroke leaves the human body in a state of immunodepression. The regulatory T (Treg) cells may be strongly associated with a change of immune status. In this trial, we collected venous blood from a cohort of patients who were diagnosed with acute ischemic stroke within the last 24 hours (n = 139)...
March 20, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28320012/acute-myocardial-infarction-masked-by-brugada-syndrome-a-case-report
#16
Alicia Mateo Martinez, Rocio Cortes Sanchez, Javier Lacunza-Ruiz, Jose Maria Lopez Ayala
No abstract text is available yet for this article.
March 21, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28319954/comparison-of-initial-vasopressors-used-for-delayed-cerebral-ischemia-after-aneurysmal-subarachnoid-hemorrhage
#17
Bhaskar Roy, Louise D McCullough, Rajat Dhar, James Grady, Yu-Bo Wang, Robert J Brown
BACKGROUND: The main reason for morbidity after aneurysmal subarachnoid hemorrhage (aSAH) is delayed cerebral ischemia (DCI). The mainstay of medical therapy for treating DCI is induced hypertension with vasopressors to restore cerebral perfusion. Both phenylephrine (PE) and norepinephrine (NE) are commonly used for induced hypertension, but the impact of the initial choice of vasopressor on the efficacy, adverse effects, or outcome after hemodynamic therapy for DCI is unknown. METHODS: Sixty-three patients with aSAH between January 2012 and October 2014, who developed DCI (defined as new focal deficit or decline in Glasgow Coma Score) and in which PE (n = 45) or NE (n = 18) treatment was initiated were evaluated in this retrospective study...
March 21, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28319909/stability-and-change-in-disease-prestige-a-comparative-analysis-of-three-surveys-spanning-a-quarter-of-a-century
#18
Dag Album, Lars E F Johannessen, Erik B Rasmussen
In this paper, we present a comparative analysis of three survey studies of disease prestige in medical culture. The studies were conducted in 1990, 2002 and 2014 using the same research design. In each of the three rounds, a sample of Norwegian physicians was asked to rate a set of 38 diseases on a scale from 1 to 9 according to the prestige they believed health personnel in general would award them. The results show a remarkable stability in the prestige rank order over 25 years. The top three diseases in all three surveys were leukaemia, brain tumour and myocardial infarction...
March 14, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28319595/protective-effects-of-antihypertensive-treatment-in-patients-aged-85-years-or-older
#19
Giovanni Corrao, Federico Rea, Matteo Monzio Compagnoni, Luca Merlino, Giuseppe Mancia
OBJECTIVE: To assess whether in individuals aged 85 years or older, adherence to antihypertensive drugs is accompanied by a reduced risk of cardiovascular events. METHODS: A nested case-control study was carried out on a cohort of patients aged 85 years or older, who were newly treated with antihypertensive drugs between 2007 and 2009, using the database available for all citizens (about 10 million) of Lombardy (Italy). Cases were the cohort members who experienced death or hospital discharge for stroke, myocardial infarction (MI) or heart failure from the initial prescription until 2012...
March 17, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28319533/-perfscore-a-multidimensional-score-a-simple-way-to-predict-the-success-of-cardiac-rehabilitation
#20
Patrizia Maras, Sara Doimo, Alessando Altinier, Alessio Della Mattia, Luigia Scudeller, Gianfranco Sinagra, Catherine Klersy
BACKGROUND: We propose a simple and reliable score, performance score ('PERFSCORE'), that allows cardiologists to assess the achievement of therapeutic goals. METHODS: We identified six indicators of cardiac rehabilitation performance: heart rate (HR) less than 70 beats/min; blood pressure (BP) less than 140/90 mmHg; smoking cessation or non-smokers; left ventricular ejection fraction (LVEF) more than 40%; LDLc less than 100 mg/dl or more than 70 mg/dl if diabetic; and on treatment at least with three drugs among angiotensin converting enzyme (ACE) inhibitors or angiotensin receptor blocker (ARBs), β-blockers, statins, and ASA...
March 17, 2017: Journal of Cardiovascular Medicine
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