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https://www.readbyqxmd.com/read/27909898/two-dimensional-polyaniline-nanostructure-to-the-development-of-microfluidic-integrated-flexible-biosensors-for-biomarker-detection
#1
Pei Liu, Yisi Zhu, Seung Hee Lee, Minhee Yun
In this work, we report a flexible field-effect-transistor (FET) biosensor design based on two-dimensional (2-D) polyaniline (PANI) nanostructure. The flexible biosensor devices were fabricated through a facile and inexpensive method that combines top-down and bottom-up processes. The chemically synthesized PANI nanostructure showed excellent p-type semiconductor properties as well as good compatibility with flexible design. With the 2-D PANI nanostructure being as thin as 80 nm and its extremely large surface-area-to-volume (SA/V) ratio due to the intrinsic properties of PANI chemical synthesis, the developed flexible biosensor exhibited outstanding sensing performance in detecting B-type natriuretic peptide (BNP) biomarkers, and was able to achieve high specificity (averagely 112 folds) with the limit of detection as low as 100 pg/mL...
December 2016: Biomedical Microdevices
https://www.readbyqxmd.com/read/27908301/utility-of-b-type-natriuretic-peptides-in-the-assessment-of-patients-with-systemic-sclerosis-associated-pulmonary-hypertension-in-the-pharos-registry
#2
Lorinda Chung, Robert M Fairchild, Daniel E Furst, Shufeng Li, Firas Alkassab, Marcy B Bolster, Mary Ellen Csuka, Chris T Derk, Robyn T Domsic, Aryeh Fischer, Tracy Frech, Mardi Gomberg-Maitland, Jessica K Gordon, Monique Hinchcliff, Vivien Hsu, Laura K Hummers, Dinesh Khanna, Thomas A Jr Medsger, Jerry A Molitor, Ivana R Preston, Elena Schiopu, Lee Shapiro, Faye Hant, Richard Silver, Robert Simms, John Varga, Virginia D Steen, Roham T Zamanian
OBJECTIVES: To assess the utility of B-type natriuretic peptide (BNP) and N-terminal pro-BNP (NT-proBNP) in detecting and monitoring pulmonary hypertension (PH) in systemic sclerosis (SSc). METHODS: PHAROS is a multicenter prospective cohort of SSc patients at high risk for developing pulmonary arterial hypertension (SSc-AR-PAH) or with a definitive diagnosis of SSc-PH. We evaluated 1) the sensitivity and specificity of BNP≥64 and NT-proBNP≥210 pg/mL for the detection of SSc-PAH and/ or SSc-PH in the SSc-AR-PAH population; 2) baseline and longitudinal BNP and NT-proBNP levels as predictors of progression to SSc-PAH and/or SSc-PH; 3) baseline BNP≥180, NT-proBNP≥553 pg/mL, and longitudinal changes in BNP and NT-proBNP as predictors of mortality in SSc-PH diagnosed patients...
November 10, 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27908251/effects-of-an-outpatient-service-rehabilitation-programme-in-patients-affected-by-pulmonary-arterial-hypertension-an-observational-study
#3
Maurizio Bussotti, Paola Gremigni, Roberto Fe Pedretti, Patrycja Kransinska, Silvia Di Marco, Paola Corbo, Giovanni Marchese, Paolo Totaro, Marinella Sommaruga
BACKGROUND: Pulmonary arterial hypertension (PAH) is a rare disease characterised by a severe impairment of functional status and quality of life (QoL). Use of rehabilitative programmes may help to improve outcomes. The aim of this pre/post test case series was to evaluate the impact of a training program, including sessions of aerobic and resistance exercise, inspiratory muscle reinforcement, slow breathing, relaxation, and psychological support, on functional outcomes. METHODS: Fifteen patients affected by PAH, in World Health Organization (WHO) Functional Class (FC) II or III and in stable clinical condition, were included in a 4-week cardiorespiratory training programme conducted in outpatient service...
November 30, 2016: Cardiovascular & Hematological Disorders Drug Targets
https://www.readbyqxmd.com/read/27901331/clinical-indices-and-biomarkers-for-perioperative-cardiac-risk-stratification-an-update
#4
Radmilo J Janković, Danica Z Marković, Dušan T Sokolović, Ivana Zdravković, Massimiliano Sorbello
European Society of Cardiology (ESC)/ European Society of Anesthesiology (ESA) highlighted that anesthesiologist has a leading role in perioperative cardiovascular assessment and management in the year of 2014. During cardiovascular assessment one can rely on cooperation of multi-disciplinary specialists like: other anesthesiologists, cardiologists and surgeons. For the purpose of precise systematization and decision making the Lee score or NSQUIP database can be used besides the traditionally used ASA score...
November 30, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27900955/serum-levels-of-n-terminal-pro-b-type-natriuretic-peptide-as-a-diagnostic-marker-for-left-ventricular-dysfunction-in-children-with-end-stage-renal-disease-on-hemodialysis
#5
Amr Mohamed Zoair, Maher Ahmed Abdel-Hafez, Wegdan Mawlana, Mohamed Abdel-Rahman Sweylam
The objective of this study was to determine the diagnostic cutoff value of N-terminal-pro B-type natriuretic peptide (NT-pro BNP) as a marker of left ventricular (LV) dysfunction in children with end-stage renal disease (ESRD) on regular hemodialysis (HD). The study was carried out on thirty children with ESRD on regular HD and thirty healthy controls. Echocardiographic studies were done, including a conventional mode for ejection fraction, fractional shortening, tissue Doppler imaging, and longitudinal global strain by speckle tracking...
November 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27899856/effect-of-spironolactone-on-plasma-apelin-12-levels-in-patients-with-chronic-systolic-heart-failure
#6
Mustafa Topuz, Mehmet Cosgun, Oğuz Akkuş, Atilla Bulut, Omer Sen, Ayşe Nur Topuz, Murat Caylı
BACKGROUND: The aim of this study was to determine whether spironolactone therapy has an effect on serum apelin-12 levels in heart failure with reduced ejection fraction (HFrEF) patients. METHODS: Eighty outpatients previously diagnosed with HFrEF were enrolled in the current study. Included patients were taking only standard heart failure therapy (ST) (angiotensin converting enzyme or angiotensin receptor blocker, beta-blockers, loop diuretics and anticoagulant or antiagregan agents) without a mineralocorticoid receptor antagonists (MRA) because of its side effects, and were designated the non-MRA group; those patients taking 25 mg/daily spironolactone in addition to the ST were deemed the MRA group...
November 2016: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/27895666/cardiometabolic-risk-in-hyperlipidemic-men-and-women
#7
Michael Leutner, Christian Göbl, Alice Wielandner, Eleonora Howorka, Marlies Prünner, Latife Bozkurt, Jürgen Harreiter, Helmut Prosch, Oliver Schlager, Silvia Charwat-Resl, Alexandra Kautzky-Willer
Objective. The aim of this study was to evaluate sex specific differences of metabolic and clinical characteristics of treated hyperlipidemic men and women (HL-men and HL-women). Methods. In this study vascular and metabolic characteristics of 35 HL-women and 64 HL-men were assessed. In addition a sex specific analysis of metabolic and nutritional habits of HL-patients with prediabetes (HL-IGR) was done. Results. HL-women were older and had favourable concentrations of high density lipoprotein cholesterol (HDL-cholesterol), triglycerides (TG), and triglyceride/HDL-cholesterol ratio (TG/HDL-ratio) but were also shown to have higher concentrations of lipoprotein-a compared to HL-men...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27894126/brain-type-natriuretic-peptide-and-amino-terminal-pro-brain-type-natriuretic-peptide-discharge-thresholds-for-acute-decompensated-heart-failure-a-systematic-review
#8
Casey N McQuade, Marisa Mizus, Joyce W Wald, Lee Goldberg, Mariell Jessup, Craig A Umscheid
Background: Acute decompensated heart failure (ADHF) requiring hospitalization is associated with high postdischarge mortality and readmission rates. Purpose: To examine the association between achieving predischarge natriuretic peptide (NP) thresholds and mortality and readmission rates in adults hospitalized for ADHF. Data Sources: Multiple databases from 1947 to October 2016 (English-language studies only). Study Selection: Trials and observational studies that compared mortality and readmission outcomes between patients with ADHF achieving a specific predischarge NP goal and those not achieving the goal...
November 29, 2016: Annals of Internal Medicine
https://www.readbyqxmd.com/read/27893819/salvianolic-acid-b-alleviates-heart-failure-by-inactivating-erk1-2-gata4-signaling-pathway-after-pressure-overload-in-mice
#9
Juan Yu, Renshan Chen, Yafang Tan, Jiashin Wu, Jianyong Qi, Minzhou Zhang, Weiwang Gu
BACKGROUND: Heart failure(HF) is a dangerous disease that affects millions of patients. Radix Salvia is widely used in Chinese clinics to treat heart diseases. Salvianolic acid B(SalB) is the major active component of Radix Salvia. This study investigated the mechanisms of action and effects of SalB on HF in an experimental mouse model of HF. METHODS: We created a mouse model of HF by inducing pressure overload with transverse aortic constriction(TAC) surgery for 2 weeks and compared among 4 study groups: SHAM group (n = 10), TAC group (n = 9), TAC+MET group (metprolol, positive drug treatment, n = 9) and TAC+SalB group (SalB, 240 mg•kg-1•day-1, n = 9)...
2016: PloS One
https://www.readbyqxmd.com/read/27891061/noninvasive-positive-pressure-ventilation-in-chronic-heart-failure
#10
REVIEW
Hao Jiang, Yi Han, Chenqi Xu, Jun Pu, Ben He
Instruction and Objectives. Noninvasive positive pressure ventilation (NPPV) alleviates sleep-disordered breathing (SDB) and it may improve cardiac function in SDB patients. Because large randomized controlled trials directly evaluating the impact of NPPV on cardiac function are lacking, we conducted a meta-analysis of published data on effectiveness of NPPV in improving cardiac function in patients with chronic heart failure regardless of SDB presence. Methods. Controlled trials were identified in PubMed, OVID, and EMBASE databases...
2016: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/27890915/pharmacological-evidence-a-new-therapeutic-approach-to-the-treatment-of-chronic-heart-failure-through-sur2b-kir6-1-channel-in-endothelial-cells
#11
Shang Wang, Chao-Liang Long, Jun Chen, Wen-Yu Cui, Yan-Fang Zhang, Hao Zhang, Hai Wang
Both iptakalim (Ipt) and natakalim (Nat) activate the SUR2B/Kir6.1 channel, an ATP-sensitive potassium channel (KATP) subtype, with high selectivity. In this study we investigated the therapeutic effects of Ipt and Nat against isoproterenol-induced chronic heart failure (ISO-CHF) in rats, and demonstrated a new therapeutic approach to the treatment of CHF through activation of the SUR2B/Kir6.1 channel in endothelial cells. In ISO-CHF rats, oral administration of Nat (1, 3, 9 mg·kg(-1)·d(-1)) or Ipt (3 mg·kg(-1)·d(-1)) for 60 days significantly improved cardiac dysfunction, reversed cardiac remodeling, significantly attenuated the pathological increases in BNP levels, and improved endothelial dysfunction by adjusting the balance between endothelin and NO systems...
November 28, 2016: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/27890513/therapeutic-effect-of-immunoadsorption-and-subsequent-immunoglobulin-substitution-in-patients-with-dilated-cardiomyopathy-results-from-the-observational-prospective-bad-berka-registry
#12
Marc-Alexander Ohlow, Michele Brunelli, Matthias Schreiber, Bernward Lauer
BACKGROUND: Elimination of cardiac autoantibodies, frequently detected in patients with dilated cardiomyopathy (DCM), with immunoadsorption (IA) improves functional capacity and left ventricular (LV) function. This study aimed to prospectively address this issue in a large cohort of unselected patients. METHODS: Consecutive patients undergoing IA followed by IgG substitution were included. Clinical and echocardiographic parameters were assessed at baseline (BL) and 12-month follow-up (FU)...
November 24, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27889914/predictors-of-long-term-mortality-in-older-patients-hospitalized-for-acutely-decompensated-heart-failure-clinical-relevance-of-natriuretic-peptides
#13
Andrea Passantino, Piero Guida, Rocco Lagioia, Enrico Ammirati, Fabrizio Oliva, Maria Frigerio, Domenico Scrutinio
BACKGROUND: Acute heart failure is a common cause of hospitalization among older patients. Optimized risk stratification might improve the outcome for this subgroup of patients. Natriuretic peptides have been used in the diagnosis of heart failure and in evaluating the prognosis of patients hospitalized for heart failure. However, their utility in the elderly is still controversial. OBJECTIVE: To evaluate long-term survival and prognostic factors for elderly patients hospitalized for acutely decompensated heart failure and evaluate the prognostic utility of NT-proBNP...
November 27, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27889753/renal-denervation-attenuates-multi-organ-fibrosis-and-improves-vascular-remodeling-in-rats-with-transverse-aortic-constriction-induced-cardiomyopathy
#14
Kai Wang, Dasheng Lu, Bin Zhang, Shengchan Wang, Qian Liu, Qi Zhang, Jie Geng, Qijun Shan
BACKGROUND/AIMS: To investigate the effects of renal denervation (RDN) on multi-organ fibrosis and vascular remodeling in cardiomyopathy. METHODS: Thirty-six male Sprague-Dawley rats underwent transverse aortic constriction (TAC). Five weeks later, 28 surviving TAC rats were randomly assigned to three groups: (1) RDN, (2) Sham, (3) Carvedilol. Six male Sham TAC rats served as the Control. Ten weeks after TAC, samples were collected. RESULTS: TAC rats showed an increased diastolic interventricular septal thickness at week 5...
November 25, 2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27889567/prognostic-value-of-plasma-apelin-concentrations-at-admission-in-patients-with-st-segment-elevation-acute-myocardial-infarction
#15
Jordi Sans-Roselló, Gregori Casals, Xavier Rosselló, Bernardino González de la Presa, Montserrat Vila, Albert Duran-Cambra, Manuel Morales-Ruiz, Andreu Ferrero-Gregori, Wladimiro Jiménez, Alessandro Sionis
BACKGROUND: The use of plasma biomarkers is relevant for the prognosis of ST-segment elevation myocardial infarction (STEMI) patients. Apelin, an adipocytokine, plays a pivotal role in the pathophysiology of both ischemia/reperfusion injury and its potential subsequent heart failure. We evaluated apelin concentrations at admission as a biomarker to assess risk of 6-month mortality. METHODS: Consecutive patients with STEMI were recruited from January 2012 to January 2013 (n=250)...
November 23, 2016: Clinical Biochemistry
https://www.readbyqxmd.com/read/27889555/correlation-between-microvascular-dysfunction-and-b-type-natriuretic-peptide-levels-in-non-ischemic-heart-failure-patients-with-cardiac-fibrosis
#16
Kyoko Hirakawa, Megumi Yamamuro, Tomoaki Uemura, Seiji Takashio, Koichi Kaikita, Daisuke Utsunomiya, Mina Nakayama, Eiichiro Yamamoto, Yasuyuki Yamashita, Seiji Hokimoto, Kenichi Tsujita
BACKGROUNDS: The relationship between microvascular dysfunction and plasma B-type natriuretic peptide (BNP) levels remains unclear in heart failure (HF) patients with cardiac fibrosis. METHODS: This study evaluated 55 consecutive non-ischemic HF patients in an effort to determine the relationship between endothelial independent coronary microvascular dysfunction and plasma BNP levels, as well as whether each measure is correlated with myocardial fibrosis. We evaluated plasma BNP levels in patients with stable HF...
November 8, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27888752/factors-influencing-brain-natriuretic-peptide-levels-in-healthy-pregnant-women
#17
Michinori Mayama, Masato Yoshihara, Kaname Uno, Sho Tano, Takehiko Takeda, Mayu Ukai, Yasuyuki Kishigami, Hidenori Oguchi
BACKGROUND: The normal range of plasma brain natriuretic peptide (BNP) in pregnant women is still unclear. Moreover, pregnant women experience dynamic body weight changes and suffer from anemia, but effects on maternal BNP have not been investigated. This study aimed to reveal the normal plasma BNP range and examine the effects of physiological changes on BNP among pregnant women. METHODS AND RESULTS: Plasma BNP, hemoglobin, plasma creatinine and BMI were measured in 58 non-pregnant control women and in 773 normal pregnant women at late pregnancy, early postpartum and 1-month postpartum...
November 10, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27884747/novel-function-of-%C3%AE-1d-l-type-calcium-channel-in-the-atria
#18
Ujala Srivastava, Ademuyiwa S Aromolaran, Frank Fabris, Deana Lazaro, John Kassotis, Yongxia Qu, Mohamed Boutjdir
Ca entry through atrial L-type Calcium channels (α1C and α1D) play an important role in muscular contraction, regulation of gene expression, and release of hormones including atrial natriuretic peptide (ANP), and brain natriuretic peptide (BNP). α1D Ca channel is exclusively expressed in atria, and has been shown to play a key role in the pathogenesis of atrial fibrillation. Recent data have shown that the small conductance calcium-activated potassium channel, SK4 is also atrial specific and also contributes prominently to the secretion of ANP and BNP...
November 22, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27884008/left-ventricular-plication-reduces-wall-stress-and-cardiomyocyte-hypertrophy-in-a-rat-model-of-ischemic-cardiomyopathy
#19
Hidetsugu Asai, Yasushige Shingu, Tomoji Yamakawa, Haruki Niwano, Satoru Wakasa, Tomonori Ooka, Hiroki Kato, Tsuyoshi Tachibana, Yoshiro Matsui
BACKGROUND: The indications of left-ventricular plication (LVP) are controversial, although several studies have reported favorable outcomes in heart failure patients. The aim of this study was to assess left-ventricular (LV) wall stress and myocardial remodeling after LVP in a rat model of myocardial infarction (MI). METHODS: Sixteen rats underwent LVP by excluding the LV anterior wall scar 4 weeks after ligation of the left anterior descending artery. After 4 weeks, LV wall stress was assessed using transthoracic echocardiography and an LV catheter...
November 25, 2016: European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes
https://www.readbyqxmd.com/read/27883283/usefulness-of-transthoracic-echocardiography-parameters-and-brain-natriuretic-peptide-as-mortality-predictors-in-hospitalized-acutely-poisoned-patients-a-prospective-observational-study
#20
Catalina Lionte, Victorita Sorodoc, Cristina Bologa, Cristina Tuchilus, Elisabeta Jaba
Acute poisonings represent a common cause of morbidity and mortality worldwide. The prognostic utility of the transthoracic echocardiography (TTE) parameters combined with brain natriuretic peptide (BNP) in acute poisoning with different xenobiotics, upon admission in the hospital was not evaluated. This prospective observational cohort study included 229 acutely poisoned non-diabetic adults, with a median age of 44 years (range 18-90 years), 50.7% women, with an in-hospital mortality rate of 8.7%. Univariate logistic regression analysis showed that age, the left ventricle kinetic abnormalities, the E wave deceleration time (EDT) and BNP correlated significantly with mortality in acutely poisoned patients...
November 24, 2016: Basic & Clinical Pharmacology & Toxicology
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