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https://www.readbyqxmd.com/read/28108636/serelaxin-treatment-promotes-adaptive-hypertrophy-but-does-not-prevent-heart-failure-in-experimental-peripartum-cardiomyopathy
#1
Justus Nonhoff, Melanie Ricke-Hoch, Mirco Mueller, Britta Stapel, Tobias Pfeffer, Martina Kasten, Michaela Scherr, Constantin von Kaisenberg, Johann Bauersachs, Arash Haghikia, Denise Hilfiker-Kleiner
AIMS: Peripartum cardiomyopathy (PPCM) is a systolic left ventricular dysfunction developing in the peripartum phase in previously healthy women. Relaxin-2 is a pregnancy hormone with potential beneficial effects in heart failure patients. We evaluated Relaxin-2 as a potential diagnostic marker and/or a therapeutic agent in PPCM. METHODS AND RESULTS: In healthy peripartum women, serum Relaxin-2 levels (measured by ELISA in the second half of pregnancy) were elevated showing a decreasing trend in the first postpartum week and returned to non-pregnant levels thereafter...
January 20, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28106289/the-involvement-of-corin-in-the-progression-of-diabetic-erectile-dysfunction-in-a-rat-model-by-down-regulating-anp-no-cgmp-signal-pathway
#2
Jian Wang, Yuanyuan Mi, Fenglai Yuan, Sheng Wu, Xiaoming You, Feng Dai, Yi Huang, Jia Cao, Jin Zhu, Boxin Xue, Lijie Zhu
This study was aimed to analyze the potential role of Corin in the procession of diabetic ED and to explore the underlying mechanism. Diabetic ED rat model was constructed and the characteristics of diabetic ED and control rats were recorded at 4, 8, 12 and 16 weeks. qRT-PCR and Western bloting were used to detected the mRNA and protein levels. Intracellular cGMP detection was accomplished using a commercial radioimmunoassay method. Vascular endothelial cell from rat corpus cavernosum spiral artery was isolated and transfected with si- Corin to analyzed the potential role of Corin...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28096577/the-effect-of-atrial-natriuretic-peptide-infusion-on-intestinal-injury-in-septic-shock
#3
Ghada F Elbaradey, Nagat Sayed Elshmaa, Hossam Hodeib
BACKGROUND AND AIMS: The aim of this study is to assess the effect of atrial natriuretic peptide (ANP) on intestinal ischemia-reperfusion injury in septic shock. MATERIAL AND METHODS: A prospective randomized controlled, observer-blinded study was carried out in surgical Intensive Care Unit (ICU), University Hospital. Forty adult patients in septic shock were randomly divided into two groups, control group (Group C) received normal saline and ANP group (Group A) patients received ANP in the form of 1...
October 2016: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/28096043/a-simplified-protocol-for-culture-of-murine-neonatal-cardiomyocytes-on-nanoscale-keratin-coated-surfaces
#4
Aditi Jain, Venkatraman Ravi, Jaseer Muhamed, Kaushik Chatterjee, Nagalingam R Sundaresan
OBJECTIVE: We aim to develop a simple, efficient and cost-effective protocol for culturing the neonatal cardiomyocytes using keratin derived from human hair, which can be used for studying cardiac hypertrophy in vitro. METHODS: Keratin was extracted from human hair and applied as nanoscale coating onto the culture dishes. Physical parameters such as surface morphology and roughness of the coating were studied by SEM and AFM. Cardiomyocyte specific markers were assessed by immunofluorescence...
January 9, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28073264/metal-organic-polyhedra-coated-si-nanowires-for-the-sensitive-detection-of-trace-explosives
#5
Anping Cao, Wei Zhu, Jin Shang, Johan H Klootwijk, Ernst J R Sudhölter, Jurriaan Huskens, Louis C P M de Smet
Surface-modified silicon nanowire-based field-effect transistors (SiNW-FETs) have proven to be a promising platform for molecular recognition in miniature sensors. In this work, we present a novel nanoFET device for the sensitive and selective detection of explosives based on affinity layers of metal-organic polyhedra (MOPs). The judicious selection of the geometric and electronic characteristics of the assembly units (organic ligands and unsaturated metal site) embedded within the MOP cage allowed for the formation of multiple charge-transfer (CT) interactions to facilitate the selective explosive inclusion...
January 11, 2017: Nano Letters
https://www.readbyqxmd.com/read/28068633/polyphenol-rich-ethanolic-extract-from-boerhavia-diffusa-l-mitigates-angiotensin-ii-induced-cardiac-hypertrophy-and-fibrosis-in-rats
#6
Prathapan A, Mathews V Varghese, Abhilash S, Salin Raj P, Anil K Mathew, Anupama Nair, R Harikumaran Nair, Raghu K G
Boerhavia diffusa is a renowned edible medicinal plant extensively used against different ailments including heart diseases in the traditional system of medicine in several countries. The present study aims to evaluate the therapeutic efficacy of ethanolic extract of Boerhavia diffusa (BDE) on cardiac hypertrophy and fibrosis induced by angiotensin II (Ang II) in male wistar rats and to identify the active components present in it. A substantial increase of hypertrophy markers such as cardiac mass index, concentration of ANP and BNP, cardiac injury markers like CK-MB, LDH and SGOT, has been observed in hypertrophied groups whereas BDE treatment attenuated these changes when compared to hypertrophied rats...
January 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28062626/c-type-natriuretic-peptides-in-coronary-disease
#7
Timothy C R Prickett, Robert N Doughty, Richard W Troughton, Chris M Frampton, Gillian A Whalley, Chris J Ellis, Eric A Espiner, A Mark Richards
AIMS: C-type natriuretic peptide (CNP) is a paracrine growth factor expressed in the vascular endothelium. Although upregulated in atheromatous arteries, the predictive value of plasma CNP products for outcome in coronary disease is unknown. This study aimed to compare the prognostic value of plasma CNP products with those of other natriuretic peptides in individuals with coronary artery disease, and investigate their associations with cardiac and renal function. METHODS AND RESULTS: Plasma concentrations of CNP and amino-terminal proCNP (NT-proCNP) were measured at baseline in 2129 individuals after an index acute coronary syndrome admission and related to cardiac and renal function, other natriuretic peptides [atrial NP (ANP) and B-type NP (BNP)] and prognosis (primary end point, mortality; secondary end point, cardiac readmission)...
January 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28056799/epidemiological-characteristics-and-gender-specific-differences-of-obstructive-sleep-apnea-in-a-chinese-hypertensive-population-a-cross-sectional-study
#8
Anping Cai, Yingling Zhou, Jiawei Zhang, Qi Zhong, Rui Wang, Ling Wang
BACKGROUND: Obstructive sleep apnea (OSA) is associated with an increase in the prevalence and incidence of hypertension and cardiovascular diseases. Data about epidemiological characteristics of OSA in Chinese hypertensive populations is limited. METHODS: Hypertensive subjects without a prior diagnosis of OSA were recruited, and the apnea-hyponea index (AHI) was assessed by polysomnography. Comparisons were performed between subjects without OSA and with different degrees of OSA...
January 5, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28052321/canonical-hedgehog-signaling-regulates-hepatic-stellate-cell-mediated-angiogenesis-in-liver-fibrosis
#9
Feng Zhang, Meng Hao, Huanhuan Jin, Zhen Yao, Naqi Lian, Li Wu, Jiangjuan Shao, Anping Chen, Shizhong Zheng
BACKGROUND AND PURPOSE: Hepatic stellate cells (HSCs) are liver-specific pericytes regulating angiogenesis during liver fibrosis. We aimed to elucidate the mechanisms by which hedgehog signaling regulated HSC angiogenic properties and to validate the therapeutic implications. EXPERIMENTAL APPROACH: Rats and mice were intoxicated with carbon tetrachloride for in vivo evaluation of hepatic angiogenesis and fibrotic injury. Diversified molecular approaches including real-time PCR, Western blot, luciferase reporter assay, chromatin immunoprecipitation, electrophoretic mobility shift assay, and co-immunoprecipitation were used to investigate the underlying mechanisms in vitro...
January 4, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28049526/atrial-natriuretic-peptide-protects-against-bleomycin-induced-pulmonary-fibrosis-via-vascular-endothelial-cells-in-mice-anp-for-pulmonary-fibrosis
#10
Atsuko Okamoto, Takashi Nojiri, Kazuhisa Konishi, Takeshi Tokudome, Koichi Miura, Hiroshi Hosoda, Jun Hino, Mikiya Miyazato, Yohkoh Kyomoto, Kazuhisa Asai, Kazuto Hirata, Kenji Kangawa
BACKGROUND: Pulmonary fibrosis is a life-threatening disease characterized by progressive dyspnea and worsening pulmonary function. Atrial natriuretic peptide (ANP), a heart-derived secretory peptide used clinically in Japan for the treatment of acute heart failure, exerts a wide range of protective effects on various organs, including the heart, blood vessels, kidneys, and lungs. Its therapeutic properties are characterized by anti-inflammatory and anti-fibrotic activities mediated by the guanylyl cyclase-A (GC-A) receptor...
January 3, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28038427/autophagy-regulates-turnover-of-lipid-droplets-via-ros-dependent-rab25-activation-in-hepatic-stellate-cell
#11
Zili Zhang, Shifeng Zhao, Zhen Yao, Ling Wang, Jiangjuan Shao, Anping Chen, Feng Zhang, Shizhong Zheng
Activation of hepatic stellate cells (HSCs) is a pivotal event in liver fibrosis, characterized by dramatic disappearance of lipid droplets (LDs). Although LD disappearance has long been considered one of the hallmarks of HSC activation, the underlying molecular mechanisms are largely unknown. In this study, we sought to investigate the role of autophagy in the process of LD disappearance, and to further examine the underlying mechanisms in this molecular context. We found that LD disappearance during HSC activation was associated with a coordinate increase in autophagy...
December 21, 2016: Redox Biology
https://www.readbyqxmd.com/read/28027837/rapid-determination-of-six-carcinogenic-primary-aromatic-amines-in-mainstream-cigarette-smoke-by-two-dimensional-online-solid-phase-extraction-combined-with-liquid-chromatography-tandem-mass-spectrometry
#12
Zhenying Bie, Wei Lu, You Zhu, Yusong Chen, Hubo Ren, Lishun Ji
A fully automated, rapid, and reliable method for simultaneous determination of six carcinogenic primary aromatic amines (AAs), including o-toluidine (o-TOL), 2, 6-dimethylaniline (2, 6-DMA), o-anisidine (o-ASD), 1-naphthylamine (1-ANP), 2-naphthylamine (2-ANP), and 4-aminobiphenyl (4-ABP), in mainstream cigarette smoke was established. The proposed method was based on two-dimensional online solid phase extraction combined with liquid chromatography tandem mass spectrometry (SPE/LC-MS/MS). The particulate phase of the mainstream cigarette smoke was collected on a Cambridge filter pad and pretreated via ultrasonic extraction with 2% formic acid (FA), while the gas phase was trapped by 2% FA without pretreatment for determination...
December 21, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28018255/an-affective-neuroscience-framework-for-the-molecular-study-of-internet-addiction
#13
Christian Montag, Cornelia Sindermann, Benjamin Becker, Jaak Panksepp
Internet addiction represents an emerging global health issue. Increasing efforts have been made to characterize risk factors for the development of Internet addiction and consequences of excessive Internet use. During the last years, classic research approaches from psychology considering personality variables as vulnerability factor, especially in conjunction with neuroscience approaches such as brain imaging, have led to coherent theoretical conceptualizations of Internet addiction. Although such conceptualizations can be valuable aid, the research field is currently lacking a comprehensive framework for determining brain-based and neurochemical markers of Internet addiction...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27997877/effects-of-low-dose-atrial-natriuretic-peptide-infusion-on-cardiac-surgery-associated-acute-kidney-injury-a-multicenter-randomized-controlled-trial
#14
Chieko Mitaka, Tetsu Ohnuma, Takanori Murayama, Fumio Kunimoto, Michio Nagashima, Tetsuhiro Takei, Naoya Iguchi, Makoto Tomita
PURPOSE: To evaluate the effects of atrial natriuretic peptide (ANP) on renal function and medical costs in patients with acute kidney injury (AKI) associated with cardiac surgery. MATERIALS AND METHODS: The Japanese trial for AKI in Post-cardiovascular surgery patients by ANP (JAPAN) was a prospective, multicenter, randomized, double-blind, placebo-controlled study conducted in 11 hospitals in Japan. Acute kidney injury was defined as an increase in serum creatinine of at least 0...
December 11, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27993026/particulate-coacervation-of-associative-polymer-brushes-grafted-nanoparticles-to-produce-structurally-stable-pickering-emulsions
#15
Taeseung Yang, Sang Koo Choi, Daehwan Park, Yea Ram Lee, Chan Bok Chung, Jin Woong Kim
This study introduces a new type of associative nanoparticle (ANP) that provides controlled chain-to-chain attraction with an associative polymer rheology modifier (APRM) to produce highly stable Pickering emulsions. The ANPs were synthesized by grafting hydrophobically modified hygroscopic zwitterionic poly(2-methacryloyloxyethyl phosphorylcholine-co-stearyl methacrylate) brushes onto 20 nm sized silica NPs via surface-mediated living radical polymerization. The ANP-stabilized Pickering emulsions show significant viscosity enhancement in the presence of the APRM...
December 20, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/27991743/vector-synthesis-high-resolution-electrocardiography-atrial-natriuretic-peptide-and-n-terminal-prohormone-brain-natriuretic-peptide-for-estimation-of-cardiac-load-in-pregnancy
#16
Shino Tanaka, Rie Oyama, Akimune Fukushima, Akihiko Kikuchi, Toru Sugiyama
AIM: We analyzed atrial natriuretic peptide (ANP), N-terminal pro-brain natriuretic natriuretic peptide (NT-proBNP) and vector synthesis high-resolution electrocardiography (ECG), to estimate cardiac load with circulatory dynamic change from pregnancy through the post-partum period. METHODS: The subjects were singleton pregnant women (n = 19), who were divided into three stages: stage 1, 34-36 weeks of gestation; stage 2, 2-6 post-partum days; and stage 3, 1-3 months after delivery...
December 2016: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27987883/atrial-natriuretic-peptide-conjugated-chitosan-hydrazone-mpeg-copolymer-nanoparticles-as-ph-responsive-carriers-for-intracellular-delivery-of-prednisone
#17
Gover Antoniraj M, Senthil Kumar C, Linda Jeeva Kumari Henry, Subramanian Natesan, Ruckmani Kandasamy
A chitosan-hydrazone-mPEG (CH-Hz-mPEG) copolymer which is stable at extracellular pH and cleaves at slightly acidic intracellular pH was synthesized and characterized. Blank polymeric nanoparticles (B-PNPs) and prednisone-loaded polymeric nanoparticles (P-PNPs) were then formulated by dialysis/precipitation method. The cell-specific ligand, atrial natriuretic peptide (ANP) was then conjugated to P-PNPs (ANP-P-PNPs) by a coupling reaction. Particle size and morphological analyses revealed uniform spherical shape of PNPs...
February 10, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/27987850/influence-of-ultrasonic-treatment-on-formation-of-amylose-nanoparticles-prepared-by-nanoprecipitation
#18
Yanjiao Chang, Xiaoxia Yan, Qian Wang, Lili Ren, Jin Tong, Jiang Zhou
Amylose aqueous solutions (1wt%, 3wt% and 5wt%) were treated with 100W ultrasound for various periods of time and used to prepare amylose nanoparticles (ANPs) via nanoprecipitation by adding the amylose solutions drop-wise into absolute ethanol. Viscosity average molecular weight and size distribution of the ultrasonic treated amylose were determined by measuring intrinsic viscosity and using size exclusion chromatography, respectively. The ANPs were characterized using dynamic light scattering, scanning electron microscopy, and X-ray diffraction...
February 10, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/27981497/factors-affecting-canagliflozin-induced-transient-urine-volume-increase-in-patients-with-type-2-diabetes-mellitus
#19
Hiroyuki Tanaka, Kazuhiko Takano, Hiroaki Iijima, Hajime Kubo, Nobuko Maruyama, Toshio Hashimoto, Kenji Arakawa, Masanori Togo, Nobuya Inagaki, Kohei Kaku
INTRODUCTION: Sodium glucose co-transporter 2 (SGLT2) inhibitors exhibit diuretic activity, which is a possible mechanism underlying the cardiovascular benefit of these inhibitors. However, the osmotic diuresis-induced increase in urine volume, and the risk of dehydration have been of concern with SGLT2 inhibitor treatment. This study aimed to investigate the mechanism underlying SGLT2 inhibitor canagliflozin-induced diuresis in Japanese type 2 diabetes mellitus (T2DM) patients. METHODS: Thirteen T2DM patients received a daily oral dose of 100 mg canagliflozin before breakfast for 6 days...
December 15, 2016: Advances in Therapy
https://www.readbyqxmd.com/read/27974594/complement-mediated-inhibition-of-adiponectin-regulates-perivascular-inflammation-and-vascular-injury-in-hypertension
#20
Cheng-Chao Ruan, Yu Ma, Qian Ge, Yan Li, Li-Min Zhu, Ying Zhang, Ling-Ran Kong, Qi-Hong Wu, Fanghong Li, Lixian Cheng, Allan Z Zhao, Ding-Liang Zhu, Ping-Jin Gao
Perivascular adipose tissue (PVAT)-derived adiponectin (APN) is a secreted adipokine that protects against hypertension-related cardiovascular injury. However, the regulation of APN expression in hypertension remains to be explored. In this study, we demonstrated that down-regulation of APN was associated with complement activation in the PVAT of desoxycorticosterone acetate (DOCA)-salt hypertensive mice. Complement 3-deficient hypertensive mice were protected from ANP decrease in the PVAT. APN deficiency blockaded the protective effects of complement inhibition against hypertensive vascular injury...
December 14, 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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