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Vera D Kovaleva, Anatoly B Uzdensky
No abstract text is available yet for this article.
October 1, 2016: Journal of Biomedical Optics
Peter Sandner, Peter Berger, Christoph Zenzmaier
Fibrotic diseases cause high rates of morbidity and mortality, and their incidence increases with age. Despite intense research and development efforts, effective and well-tolerated antifibrotic treatments are scarce. Transforming growth factor-β signaling, which is widely considered the most important profibrotic factor, causes a pro-oxidant shift in redox homeostasis and a concomitant decrease in nitric oxide (NO) signaling. The NO/cyclic guanosine monophosphate (cGMP) signaling cascade plays a pivotal role in the regulation of cell and organ function in whole-body hemostasis...
October 27, 2016: Gerontology
Je-Kyung Kim, Jae-Yub Jung, Heon Kim, Sang-Yong Eom, Youn-Soo Hahn
BACKGROUND AND OBJECTIVE: Recognition of patients at risk of asthma exacerbation is important for future asthma care and improved outcome. The aim of the present study was to see whether measurements of bronchodilator response (BDR) and fractional exhaled nitric oxide (FeNO) in combination provide prognostic information superior to either measurement alone in children with atopic asthma. METHODS: A total of 201 atopic children aged 8-16 years with intermittent or mild persistent asthma were included...
October 26, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
Renato P Orenha, Letícia R San Gregorio, Sérgio E Galembeck
In this computational study the interaction of NO(.), NO(+), and NO(-) with H2O: [NO--H2O](.), 1 (.), [NO--H2O](+), 1 (+) , and [NO--H2O](-), 1 (-) was analysed. The optimized geometries indicate that the relative position of NO and H2O depends on the total charge: (ON(.)--H-OH), (NO(-)--H-OH), and (ON(+)--OH2). Moreover, atomic spin density along with frontier molecular orbitals help to identify the preferred reduction or oxidation sites on the nitric oxide. Thus, quantum theory of atoms in molecules (QTAIM), electron localization function (ELF), and natural bond-bond polarizability (NBBP) methods aid to quantify the electron delocalization level between NO and H2O, 1 (+) > 1 (...
November 2016: Journal of Molecular Modeling
Petrina Yau-Pok Lau, Linda Katona, Peter Saghy, Kathryn Newton, Peter Somogyi, Karri P Lamsa
Long-term plasticity is well documented in synapses between glutamatergic principal cells in the cortex both in vitro and in vivo. Long-term potentiation (LTP) and -depression (LTD) have also been reported in glutamatergic connections to hippocampal GABAergic interneurons expressing parvalbumin (PV+) or nitric oxide synthase (NOS+) in brain slices, but plasticity in these cells has not been tested in vivo. We investigated synaptically-evoked suprathreshold excitation of identified hippocampal neurons in the CA1 area of urethane-anaesthetized rats...
October 25, 2016: Brain Structure & Function
Klaus Häfelein, Andrea Preuße-Prange, Peter Behrendt, Bodo Kurz
Meniscal integrity is a prerequisite for sustained knee joint health and prevention of meniscal degeneration is a main research goal. Cartilage-protective effects of selenium have been described, but little is known about the impact on the meniscus. We therefore investigated the influence of sodium selenite on meniscal explants under tumor necrosis factor-alpha (TNFα)-stimulated proinflammatory conditions. Meniscal explant disks (3 mm diameter × 1 mm thickness) were isolated from 2-year-old cattle and incubated with TNFα (10 ng/ml) and sodium selenite (low dose, LoD 6...
October 25, 2016: Biological Trace Element Research
Shinichiro Abe, Keiichi Ishida, Masahisa Masuda, Hideki Ueda, Hiroki Kohno, Kaoru Matsuura, Yusaku Tamura, Michiko Watanabe, Goro Matsumiya
OBJECTIVES: Pulmonary endarterectomy (PEA) is an effective treatment for chronic thromboembolic pulmonary hypertension (CTEPH), but postoperative residual hypertension leads to in-hospital mortality. Inhaled epoprostenol sodium (PGI2) and NO are administered for pulmonary hypertension after cardiothoracic surgery. This prospective study provides the first comparative evaluation of the effects of inhaled PGI2 and NO on pulmonary hemodynamics, systemic hemodynamics, and gas exchange in patients developing residual pulmonary hypertension after PEA...
October 25, 2016: General Thoracic and Cardiovascular Surgery
Christian Brinkmann, Benedikt Schulte-Körne, Marijke Grau, Sinja Obels, Roman Kemmerling, Thorsten Schiffer, Wilhelm Bloch, Klara Brixius
BACKGROUND: Increases in the amount of inducible nitric oxide synthase (iNOS) protein and abnormal production of nitric oxide (NO) in skeletal muscle have been suggested to be associated with peripheral insulin resistance in patients with type 2 diabetes mellitus (T2DM). This pilot study analyzed whether a 3-month endurance training can affect iNOS protein and NO metabolite levels in the vastus lateralis muscle of insulin-independent T2DM men, thereby affecting the patients` glycemic control...
October 26, 2016: Metabolic Syndrome and related Disorders
Hans U Stauffer, Sukesh Roy, Jacob B Schmidt, Paul J Wrzesinski, James R Gord
A resonantly enhanced, two-color, femtosecond time-resolved coherent anti-Stokes Raman scattering (CARS) approach is demonstrated and used to explore the nature of the frequency- and time-dependent signals produced by gas-phase nitric oxide (NO). Through careful selection of the input pulse wavelengths, this fully resonant electronically enhanced CARS (FREE-CARS) scheme allows rovibronic-state-resolved observation of time-dependent rovibrational wavepackets propagating on the vibrationally excited ground-state potential energy surface of this diatomic species...
September 28, 2016: Journal of Chemical Physics
Amir Hossein Doustimotlagh, Ahmad Reza Dehpour, Shahroo Etemad-Moghadam, Mojgan Alaeddini, Yasaman Kheirandish, Abolfazl Golestani
Metabolic bone disease is a major issue in chronic liver disease. Increased production of nitric oxide (NO) and elevation of endogenous opioids have been suggested to occur during cholestasis/cirrhosis. We aimed to investigate the involvement of nitrergic and opioidergic systems in bone loss after bile-duct-ligation (BDL) in rats using optical density (OD) evaluation and histomorphometric analysis. BDL- and sham-operated (SO) rats received injections of 3mg/kg Nω-Nitro-L-arginine methyl-ester-hydrochloride (L-NAME) as an NO-synthase inhibitor, 10mg/kg naltrexone (NTX) as an opioid-receptors antagonist or saline once daily for 28 days...
October 26, 2016: Histology and Histopathology
Yuan Wang, Chun-Huan Li, Bo Luo, Ya Nan Sun, Young Ho Kim, An-Zhi Wei, Jin-Ming Gao
Four new unsaturated aliphatic acid amides, named zanthoamides A-D (1-4), and eight known ones-tetrahydrobungeanool (5), ZP-amide A (6), ZP-amide B (7), ZP-amide C (8), ZP-amide D (9), ZP-amide E (10), bugeanumamide A (11), and (2E,7E,9E)-N-(2-hydroxy-2-methylpropyl)-6,11-dioxo-2,7,9-dodecatrienamide (12)-were isolated from the pericarps of Zanthoxylum bungeanum. The structures of these compounds were elucidated by extensive use of spectroscopic methods, including HRESIMS, 1D and 2D NMR analyses and comparison with previously reported data...
October 23, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Esma R Isenovic, Aleksandra Jovanovic, Emina Sudar Milovanovic, Sudar Milovanovic, Samantha J Pitt, Alan J Stewart, Sonja Zafirovic, Julijana Stanimirovic, Djordje Radak
Overexpression of inducible nitric oxide synthase (iNOS) is a key link between high-fat (HF) diet induced obesity and cardiovascular disease. Oestradiol has cardioprotective effects that may be mediated through reduction of iNOS activity/expression. In the present study, female Wistar rats were fed a standard diet or a HF diet (42% fat) for 10 weeks. iNOS gene and protein expressions were measured in heart tissue. HF-fed rats exhibited a significant increase in cardiac iNOS mRNA by 695% (p<0.05), iNOS protein level by 248% (p<0...
October 25, 2016: Current Vascular Pharmacology
I Na Yoon, Ji Hong, Peng Zhang, Jae Sam Hwang, Ho Kim
We previously reported that the CopA3 peptide (LLCIALRKK, D-form) originally isolated from the Korean dung beetle has antimicrobial and immunosuppressive effects. However, the high cost of producing the synthetic peptide, especially the D-form, has limited the development of CopA3 for therapeutic purposes. Here, we investigated whether the CopA3 deletion derivative, CopA5, which is composed of only five amino acids (LLCIA) and has the L-form structure, could inhibit the lipopolysaccharide (LPS)-induced activation of macrophages...
October 25, 2016: Journal of Microbiology and Biotechnology
Fenfen Ma, Wenwen Li, Xinghui Li, Ba Hieu Tran, Rinkiko Suguro, Ruijuan Guan, Cuilan Hou, Huijuan Wang, Aijie Zhang, Yichun Zhu, YiZhun Zhu
Extracorporeal pulsed electromagnetic field (PEMF) has shown the ability to regenerate tissue by promoting cell proliferation. Here, we investigated for the first time whether PEMF treatment could improve the myocardial ischemia/reperfusion (I/R) injury and uncovered its underlying mechanisms. In our study, we demonstrated for the first time that extracorporeal pulsed electromagnetic field(PEMF)has a novel effect on myocardial ischemia/reperfusion(I/R)injury. The number and function of circulating endothelial progenitor cells were increased in PEMF treating rats...
October 25, 2016: Bioscience Reports
Ana Roseli S Ribeiro, José Diego do Nascimento Valença, Jeferson da Silva Santos, Thaise Boeing, Luisa Mota da Silva, Sérgio Faloni de Andrade, Ricardo L C Albuquerque-Júnior, Sara Maria Thomazzi
Many flavonoids have been shown to present good results for the treatment of gastric ulcers. Baicalein, a bioactive flavonoid derived from the Scutellaria baicalensis Georgi root, possesses several biological effects, such as anti-inflammatory and antioxidant. This study was conducted to assess the gastroprotective properties of baicalein. Anti-ulcerogenic assay was performed using the protocol of ulcer induced by ethanol/HCl in mice; then, the role of presynaptic α2-receptors, sulfhydryl (SH) compounds, nitric oxide (NO), prostaglandin (PG) and ATP-sensitive K(+) (KATP) channels in gastroprotection of baicalein was investigated...
October 22, 2016: Chemico-biological Interactions
Anna Barbasz, Magdalena Oćwieja, Stanisław Walas
The growing popularity of nanomaterials requires a systematic study of their effects on the human body. Silver nanoparticles, due to their antiseptic properties, are used in almost every area of life. The purpose of the study was to examine whether the precursor used for the synthesis of nanoparticles affects their bio-influence and modifies their impact on cells of the human immune system. To compare the effects of precursor silver salts (AgNO3, CH3COOAg and AgClO4) and corresponding nanoparticles (TAN TAA and TAC) cytotoxicity study was conducted on two cell lines U-937 and HL-60...
October 26, 2016: Toxicology Mechanisms and Methods
Fatemeh Shaki, Sorour Ashari, Nematollah Ahangar
BACKGROUND: Ciprofloxacin is a synthetic broad-spectrum antimicrobial agent of fluoroquinolone family. The aim of our investigation was to evaluate the role of oxidative damage and inflammation in nephrotoxic potential of Ciprofloxacin and protective effects of melatonin against its nephrotoxicity in male Wistar rats. METHODS: The animals were divided into six groups: Control, ciprofloxacin (100mg/kg/day, i.p), ciprofloxacin with three doses (2.5, 5 and 10mg/kg/day) of melatonin and a group which received ciprofloxacin (100mg/kg/day) plus vitamin E (100mg/kg/day) for 8 consecutive days...
October 22, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Hui Xie, Yu-Tao Li, Yong-Min Lei, Yan-Lin Liu, Meng-Meng Xiao, Chuan Gao, Dai-Wen Pang, Wei-Hua Huang, Zhiyong Zhang, Guo-Jun Zhang
An ultrasensitive and highly efficient assay for real-time monitoring of nitric oxide (NO) at single cell level based on reduced graphene oxide (RGO) and iron-porphyrin functionalized graphene (FGPCs) field effect transistor (FET) biosensor is reported. A layer-to-layer assembly of RGO and FGPCs on a pre-fabricated FET sensor surface through p-p stacking interaction allowed superior electrical conductivity caused by RGO, and highly catalytic specificity induced by metalloporphyrin, ensuring the ultrasensitive and highly specific detection of NO...
October 25, 2016: Analytical Chemistry
Arne Ring, Tom Morris, Marcin Wozniak, Nikol Sullo, William Dott, Veerle Verheyden, Tracy Kumar, Nigel Brunskill, Rakesh Vaja, Gavin J Murphy
BACKGROUND: Acute kidney injury (AKI) is a common and severe complication of cardiac surgery. There is no effective prevention or treatment. Sildenafil citrate (Revatio®, Pfizer Inc), a phosphodiesterase type 5 inhibitor, prevents post cardiac surgery AKI in pre-clinical studies, however its use is contraindicated in patients with symptomatic cardiovascular disease. METHODS: To assess the safety and pharmacokinetics of intravenous sildenafil in cardiac surgery patients we conducted an open label, dose escalation study with 6 patients per dose level...
October 25, 2016: British Journal of Clinical Pharmacology
Naoto Fujii, Brendan D McNeely, Glen P Kenny
β-adrenergic receptor agonists such as isoproterenol can induce cutaneous vasodilatation and sweating in humans, however, the mechanisms underpinning this response remains unresolved. We evaluated the hypotheses that 1) nitric oxide synthase (NOS) contributes to β-adrenergic cutaneous vasodilatation, whereas cyclooxygenase (COX) limits the vasodilatation, and 2) COX contributes to β-adrenergic sweating. In 10 young males (25 ± 5 years), cutaneous vascular conductance (CVC) and sweat rate were evaluated at four intradermal forearm skin sites infused with 1) lactated Ringer's (control), 2) 10 mm L -NNA, a non-specific NOS inhibitor, 3) 10 mM ketorolac, a non-specific COX inhibitor, or 4) a combination of L -NNA and ketorolac...
October 24, 2016: Journal of Physiology
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