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Arterial Si

Jürgen Rehm, Gerrit Gmel, Cristina Serra, Antoni Gual
AbstractWith help of a simulation study, the potential effects of better detection of hypertension and improved screening for alcohol problems with subsequent interventions were estimated.  Results showed, that if 50% of Spanish men between 40 and 64 years of age currently not aware of their hypertension could be made aware of their condition and received usual interventions, and 50% among men with hypertension would be screened for alcohol and received interventions for hazardous drinking or treatment for alcohol use disorders, the percentage of uncontrolled hypertension among men with hypertension would decrease from 61...
September 29, 2016: Adicciones
Jeong Woo Kim, Chang Hee Lee, Soo Byn Kim, Bit Na Park, Yang Shin Park, Jongmee Lee, Cheol Min Park
PURPOSE: To identify the most reliable imaging features for differentiating hepatocellular carcinoma with paradoxical uptake on the hepatobiliary phase (HCCpara ) from focal nodular hyperplasia (FNH)-like nodules using Gd-EOB-DTPA-enhanced MRI. MATERIALS AND METHODS: This was a retrospective study. Twenty patients with HCCpara and 21 patients with FNH-like nodules were included. The following MRI features were evaluated using 3.0 Tesla unit by two radiologists: signal intensity (SI) on T1-, T2-, and diffusion-weighted imaging (DWI), arterial enhancement pattern, washout appearance on the portal venous phase (PVP) and/or transitional phase (TP), uptake pattern on the hepatobiliary phase (HBP), "T2 scar," "EOB scar," and chemical shift on in- and out-of-phase images...
October 11, 2016: Journal of Magnetic Resonance Imaging: JMRI
Jae-Hwan Lee, Hyun-Sook Kim, Jae-Hyeong Park, Min Su Kim, Byung Joo Sun, Seung Ryu, Song Soo Kim, Seon Ah Jin, Jun Hyung Kim, Si Wan Choi, Jin-Ok Jeong, In-Sun Kwon, In-Whan Seong
BACKGROUND AND OBJECTIVES: Carbon monoxide (CO) poisoning can cause tissue hypoxia and left ventricular systolic dysfunction (LVSD) requiring intensive medical management. Our objectives were to find incidence and clinical course of LVSD CO intoxicated patients and make a clinical scoring to predict LVSD. SUBJECTS AND METHODS: We included all consecutive patients with CO exposure in the emergency room. LVSD was defined by LVEF <50% assessed by echocardiography...
September 2016: Korean Circulation Journal
Chun-Li Song, Bin Liu, Yong-Feng Shi, Ning Liu, You-You Yan, Ji-Chang Zhang, Xin Xue, Jin-Peng Wang, Zhuo Zhao, Jian-Gen Liu, Yang-Xue Li, Xiao-Hao Zhang, Jun-Duo Wu
Our study aims to investigate the roles of microRNA-130a (miR-130a) in human coronary artery endothelial cells (HCAECs) injury and inflammatory responses by targeting PTEN through the PI3K/Akt/eNOS signaling pathway. HCAECs were treated with 1.0 mmol/L homocysteine (HCY) and assigned into eight groups: the blank group, the negative control (NC) group, the miR-130a mimics group, the miR-130a inhibitors group, the si-PTEN group, the Wortmannin group, the miR-130a inhibitors + si-PTEN group and the miR-130a mimics + Wortmannin group...
October 4, 2016: Oncotarget
Toshiro Kitagawa, Hisanori Kosuge, Masaki Uchida, Yasunori Iida, Ronald L Dalman, Trevor Douglas, Michael V McConnell
PURPOSE: To evaluate Arg-Gly-Asp (RGD)-conjugated human ferritin (HFn) iron oxide nanoparticles for in vivo magnetic resonance imaging (MRI) of vascular inflammation and angiogenesis in experimental carotid disease and abdominal aortic aneurysm (AAA). MATERIALS AND METHODS: HFn was genetically engineered to express the RGD peptide and Fe3 O4 nanoparticles were chemically synthesized inside the engineered HFn (RGD-HFn). Macrophage-rich left carotid lesions were induced by ligation in FVB mice made hyperlipidemic and diabetic (n = 14), with the contralateral right carotid serving as control...
September 30, 2016: Journal of Magnetic Resonance Imaging: JMRI
Zhixun Li, Yingtao Zhang, Huiling Gong, Weimin Li, Xianglong Tang
Coronary artery disease has become the most dangerous diseases to human life. And coronary artery segmentation is the basis of computer aided diagnosis and analysis. Existing segmentation methods are difficult to handle the complex vascular texture due to the projective nature in conventional coronary angiography. Due to large amount of data and complex vascular shapes, any manual annotation has become increasingly unrealistic. A fully automatic segmentation method is necessary in clinic practice. In this work, we study a method based on reliable boundaries via multi-domains remapping and robust discrepancy correction via distance balance and quantile regression for automatic coronary artery segmentation of angiography images...
August 20, 2016: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
Hassan Albadawi, A Aria Tzika, Christian Rask-Madsen, Lindsey M Crowley, Michael W Koulopoulos, Hyung-Jin Yoo, Michael T Watkins
BACKGROUND: Obesity and type 2 diabetes are major risk factors for peripheral arterial disease in humans, which can result in lower limb demand ischemia and exercise intolerance. Exercise triggers skeletal muscle adaptation including increased vasculogenesis. The goal of this study was to determine whether demand ischemia modulates revascularization, fiber size, and signaling pathways in the ischemic hind limb muscles of mice with diet-induced obesity (DIO). MATERIALS AND METHODS: DIO mice (n = 7) underwent unilateral femoral artery ligation and recovered for 2 wks followed by 4 wks with daily treadmill exercise to induce demand ischemia...
September 2016: Journal of Surgical Research
Christina D Bruce, Craig D Steinback, Uday V Chauhan, Jamie R Pfoh, Maria Abrosimova, Emily R Vanden Berg, Rachel J Skow, Margie H Davenport, Trevor A Day
The central respiratory chemoreflex contributes to blood gas homeostasis, particularly in response to accumulation of brainstem CO2 . Cerebrovascular reactivity (CVR) affects chemoreceptor stimulation inversely through CO2 washout from brainstem tissue. Voluntary breath-holding imposes alterations in blood gases, eliciting respiratory chemoreflexes, potentially contributing to breath-hold duration (i.e., break-point). However, the effects of cerebrovascular reactivity on break-point have yet to be determined...
September 12, 2016: Experimental Physiology
S S Nelson, A K Khan
BACKGROUND: Rheumatoid arthritis (RA) is associated with an increased morbidity and mortality. This excess mortality attributable to cardiovascular events. Endothelial dysfunction represents the earliest stage of atherosclerosis. It can be measured noninvasively by peripheral tests of function, such as pulse wave analysis. OBJECTIVES: To evaluate the influence of chronic inflammatory state on endothelial function in patients with RA free of cardiovascular disease or risk factors by measuring endothelial reactivity...
October 2015: Journal of the Association of Physicians of India
Xian-Yun Wang, Meng-Meng Song, Si-Xing Bi, Yu-Jun Shen, Yu-Xian Shen, Yong-Qiang Yu
As an endoplasmic reticulum (ER) stress-inducible protein, mesencephalic astrocyte-derived neurotrophic factor (MANF) has been proven to protect dopaminergic neurons and nondopaminergic cells. Our previous studies had shown that MANF protected against ischemia/reperfusion injury. Here, we developed a magnetic resonance imaging (MRI) technology to dynamically evaluate the therapeutic effects of MANF on ischemia/reperfusion injury. We established a rat focal ischemic model by using middle cerebral artery occlusion (MCAO)...
2016: International Journal of Molecular Sciences
Dohun Kim, Si-Wook Kim, Hong-Ju Shin, Jong-Myeon Hong, Ji Hyuk Lee, Heon-Seok Han
A 10-day-old boy was transferred to our hospital due to tachypnea. Patent ductus arteriosus (PDA), 4.8 mm in diameter, with small ASD was diagnosed on echocardiography. Surgical ligation of the ductus was performed after failure of three cycles of ibuprofen. However, the ductus remained open on routine postoperative echocardiography on the second postoperative day, and chest CT revealed inadvertent ligation of the left pulmonary artery (LPA) rather than the PDA. Emergent operation successfully reopened the clipped LPA and ligated the ductus on the same (second postoperative) day...
2016: Heart Surgery Forum
Gen Chen, Jun-Jie Wang, Cang-Bao Xu, Lei Cao, Jie Lin, Xu-Ping Qing, Si-Yu Liu, En-Qi Liu, Jie Li
Minimally modified low-density lipoprotein (mmLDL) is a well-known risk factor for cardiovascular diseases. The present study was designed to investigate the role of mmLDL in the endothelium-dependent relaxation of mouse mesenteric arteries. A sensitive myograph system was employed to examine the endothelial function of mesenteric arteries. mRNA and protein expression levels were determined using real-time PCR and Western blotting, respectively. The ultramicrostructure of mesenteric vascular beds was investigated using a transmission electron microscope...
September 1, 2016: Journal of Vascular Research
Yi Dong, Xiao-Long Zhang, Feng Mao, Bei-Jian Huang, Qin Si, Wen-Ping Wang
OBJECTIVE: We analyzed contrast-enhanced ultrasound (CEUS) features of histologically proved small (≤20 mm) liver metastases, in comparison to small (≤20 mm) hepatocellular carcinomas (HCC), to define the differentiate diagnoses value of CEUS in clinical practice. MATERIAL AND METHODS: Eighty-two cases of small (≤20 mm) liver metastases and 84 cases of small (≤20 mm) HCC were retrospectively reviewed. All patients had CEUS images. Two radiologists assessed CEUS enhancement pattern and time of enhancement in consensus...
August 31, 2016: Scandinavian Journal of Gastroenterology
Suk-Hee Park, Han Bit Lee, Si Mo Yeon, Jeanho Park, Nak Kyu Lee
Here, we developed highly sensitive piezoelectric sensors in which flexible membrane components were harmoniously integrated. An electrospun nanofiber mat of poly(vinylidenefluoride-co-trifluoroethylene) was sandwiched between two elastomer sheets with sputtered electrodes as an active layer for piezoelectricity. The developed sensory system was ultrasensitive in response to various microscale mechanical stimuli and able to perceive the corresponding deformation at a resolution of 1 μm. Owing to the highly flexible and resilient properties of the components, the durability of the device was sufficiently stable so that the measuring performance could still be effective under harsh conditions of repetitive stretching and folding...
September 21, 2016: ACS Applied Materials & Interfaces
Ayumu Eto, Yoshimasa Kinoshita, Yoshihisa Matsumoto, Fumiaki Kiyomi, Minoru Iko, Kouhei Nii, Masanori Tsutsumi, Kimiya Sakamoto, Hiroshi Aikawa, Kiyoshi Kazekawa
BACKGROUND: Black-blood magnetic resonance imaging (BB-MRI) is useful for the characterization and assessment of carotid artery plaques. The plaque-to-muscle signal intensity (SI) ratio (plaque/muscle ratio [PMR]) is used widely to evaluate plaques. However, the correlation between the PMR and the T1 relaxation time needs to be determined. We measured the T1 relaxation time of carotid plaques using T1 mapping and compared the results with the PMR on BB-MRI scans. METHODS: Between April 2014 and July 2015, 20 patients with carotid artery stenosis were treated by carotid artery stenting...
August 23, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
Dawod Sharif, Wisam Matanis, Amal Sharif-Rasslan, Uri Rosenschein
BACKGROUND: Myocardial stunning is responsible for partially reversible left ventricular (LV) systolic dysfunction after successful primary percutaneous coronary intervention (PPCI) in patients with acute ST-elevation myocardial infarction (STEMI). AIM: To test the hypothesis that early coronary blood flow (CBF) to LV systolic function ratios, as an equivalent to LV stunning index (SI), predict recovery of LV systolic function after PPCI in patients with acute STEMI...
August 20, 2016: Echocardiography
Yun Gi Kim, Jung-Won Suh, Si-Hyuck Kang, Jin Joo Park, Chang-Hwan Yoon, Young-Seok Cho, Tae-Jin Youn, In-Ho Chae, Dong-Ju Choi, Hyo-Soo Kim
OBJECTIVES: The authors performed this analysis to examine whether the enhanced clopidogrel responsiveness in current smokers is maintained after adjusting the influence of hemoglobin on VerifyNow P2Y12 reaction unit (PRU). BACKGROUND: PRU is consistently reported to be lower in current smokers. However, PRU has a significant inverse relationship with hemoglobin level, and smokers have higher hemoglobin levels. Because the association between PRU and hemoglobin is likely to be an in vitro phenomenon, we hypothesized that the observed difference in PRU between nonsmokers and current smokers is the result of confounding effect of hemoglobin rather than true difference in platelet reactivity...
August 22, 2016: JACC. Cardiovascular Interventions
Elena Guadalupe Corella Aznar, Ariadna Ayerza Casas, Pilar Samper Villagrasa, Carmen Rodríguez Vigil, Lorenzo Jiménez Montañés, Carlota Calvo Escribano, José Ignacio Labarta Aizpun
Introducción: los supervivientes de leucemia aguda (LA) infantil presentan un riesgo incrementado de alteraciones metabólicas y cardiovasculares que aumentan su morbimortalidad a largo plazo.Objetivo: estimar la prevalencia de obesidad, resistencia a la insulina, dislipemia e hipertensión arterial como factores de riesgo cardiometabólico (FRCM) en un grupo de supervivientes de LA infantil, y analizar las posibles causas asociadas a su desarrollo.Material y métodos: estudio observacional retrospectivo en 47 supervivientes de LA tratados en un periodo de 4 años, que recibieron seguimiento durante 10 años...
2016: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
A Tagetti, S Bonafini, M Zaffanello, P Cavarzere, F Dalle Vedove, C Maffeis, F Antoniazzi, C Fava
OBJECTIVE: Sleep disordered breathing (SDB) and high blood pressure (BP) are more frequent among obese with respect to normal weight children and this may be due to endothelial dysfunction and a worsened arterial stiffness. The aim of this study was to evaluate the possible association between SDB and BP and the possible role of endothelial function and local and systemic arterial stiffness in a sample of obese children asymptomatic for sleep disturbances. DESIGN AND METHOD: Thirty-nine obese children were included in the study...
September 2016: Journal of Hypertension
Mashaal Dhir, Deepa Magge, Stephanie Novak, David L Bartlett, Amer H Zureikat
BACKGROUND: Hepatic artery infusion (HAI) chemotherapy is an effective regional therapy for unresectable colorectal liver metastases (U-CRLM).1 (,) 2 One of its limitations is the need for a laparotomy, which can delay the use of systemic therapy.3 Here, we describe a purely robotic technique for placement of an HAI pump (Fig 1). PATIENT: A 62-year-old male presented with a symptomatic ascending colon cancer and multiple bilobar unresectable liver metastases. He underwent laparoscopic right colectomy followed by six cycles of FOLFOXIRI and bevacizumab with stable disease by RECIST (Response Evaluation Criteria in Solid Tumors) criteria, and also underwent robotic HAI pump placement...
August 5, 2016: Annals of Surgical Oncology
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