Read by QxMD icon Read


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
M D Sainur Samad, Ambarish Biswas, Lars R Bakken, Timothy J Clough, Cecile A M de Klein, Karl G Richards, Gary J Lanigan, Sergio E Morales
Denitrification is mediated by microbial, and physicochemical, processes leading to nitrogen loss via N2O and N2 emissions. Soil pH regulates the reduction of N2O to N2, however, it can also affect microbial community composition and functional potential. Here we simultaneously test the link between pH, community composition, and the N2O emission ratio (N2O/(NO + N2O + N2)) in 13 temperate pasture soils. Physicochemical analysis, gas kinetics, 16S rRNA amplicon sequencing, metagenomic and quantitative PCR (of denitrifier genes: nirS, nirK, nosZI and nosZII) analysis were carried out to characterize each soil...
October 26, 2016: Scientific Reports
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
Kun Zhong, Wei Wang, Chuanbao Zhang, Falin He, Shuai Yuan, Zhiguo Wang
BACKGROUND: Clinical laboratory tests are important for clinicians to make diagnostic decisions, but discrepancies may directly lead to incorrect diagnosis. We would like to introduce some statistical methods to evaluate the comparability of chemistry analytes while comparing the performances of different measurement systems. METHODS: We used a panel of 10 fresh-frozen single donation serum samples to assess assays for the measurement of glucose and other 13 analytes...
2016: SpringerPlus
Jing Ke, Rui Wei, Fei Yu, Jingjing Zhang, Tianpei Hong
Glucagon-like peptide-1 (GLP-1) and its analogues have a beneficial role in cardiovascular system. Here, we aimed to investigate whether liraglutide, a GLP-1 analogue, modulated angiogenesis impaired by palmitic acid (PA) in cultured human umbilical vein endothelial cells (HUVECs). Cells were incubated with liraglutide (3-100 nmol/L) in the presence of PA (0.5mmol/L), and endothelial tube formation was observed and quantified. The protein levels of signaling molecules were analyzed and the specific inhibitors were used to identify the signaling pathways through which liraglutide affected angiogenesis...
October 21, 2016: Peptides
Nikolaos Pitsikas
Close to 1% of the world population suffer from schizophrenia. Current medications for this chronic mental disorder have greatly improved treatment over the last half century or more, but, the newer atypical antipsychotics have proven to be disappointing, and enormous challenges remain. The negative symptoms and cognitive dysfunction in schizophrenia which greatly affect overall morbidity call for better treatments. Nitric oxide (NO), an intra- and inter-cellular messenger in the brain, is involved in the pathogenesis of schizophrenia, so excessive NO production might contribute to the pathology...
2016: Current Medicinal Chemistry
Félix Javier Jiménez-Jiménez, Hortensia Alonso-Navarro, María Trinidad Herrero, Elena García-Martín, José A G Agúndez
BACKGROUND: The pathogenesis of Parkinson's disease (PD) is not fully understood. Together with some important physiological functions in the Central Nervous System (CNS), nitric oxide (NO) can have both, neuroprotective or neurotoxic actions, depending on its redox state. An important body of evidence suggests the involvement of NO in many of the processes leading to neurodegeneration in several neurological disorders including PD. OBJECTIVE: The main aim of this review is to update the data regarding the possible involvement of NO in the pathogenesis of PD...
2016: Current Medicinal Chemistry
Joaquim Carreras, Yara Yukie Kikuti, Sílvia Beà, Masashi Miyaoka, Shinichiro Hiraiwa, Haruka Ikoma, Ryoko Nagao, David Martin-Garcia, Itziar Salaverria, Ai Sato, Ichiki Akifumi, Giovanna Roncador, Juan F Garcia, Kiyoshi Ando, Elias Campo, Naoya Nakamura
AIMS AND METHODS: We aimed to define the clinicopathological characteristics of 29 primary sinonasal diffuse large B-cell lymphoma (DLBCL(sn) ) in a series of 240 DLBCL(all ()(NOS)()) including DLBCL(sn) training set (n=11) and validation set (n=18), and DLBCL(non-sn) (n=211). RESULTS: In the training set 82% had non-GCB phenotype and 18% were EBER(+) . The genomic profile showed gains((+)) of 1q21.3q31.2 (55%), 10q24.1 (46%), 11q14.1 (46%) and 18q12.1q23 (46%); losses((-)) of 6q26q27 (55%) and 9p21...
October 24, 2016: Histopathology
Albert W Girotti
Nitric oxide (NO) produced by nitric oxide synthase (NOS) enzymes is a free radical molecule involved in a wide variety of normophysiologic and pathophysiologic processes. Included in the latter category are cancer promotion, progression, and resistance to therapeutic intervention. Animal tumor photodynamic therapy (PDT) studies several years ago revealed that endogenous NO can reduce PDT efficacy and that NOS inhibitors can alleviate this. Until relatively recently, little else was known about this anti-PDT effect of NO, including: (a) the underlying mechanisms; (b) type(s) of NOS involved; and (c) whether active NO was generated in vascular cells, tumor cells, or both...
October 20, 2016: Cancers
R Rehakova, J Klimentova, M Cebova, A Barta, Z Matuskova, P Labas, O Pechanova
Deuterium-depleted water (DDW) has a lower concentration of deuterium than occurs naturally (less than 145 ppm). While effects of DDW on cancer started to be intensively studied, the effects on cardiovascular system are completely unknown. Thus, we aimed to analyze the effects of DDW (55+/-5 ppm) administration to 12-week-old normotensive Wistar-Kyoto rats (WKY) and spontaneously hypertensive rats (SHR) treated with 15 % fructose for 6 weeks. Blood pressure (BP) and selected biochemical parameters were measured together with determination of nitric oxide synthase (NOS) activity and iNOS and eNOS protein expressions in the left ventricle (LV) and aorta...
October 24, 2016: Physiological Research
J Klimentova, M Cebova, A Barta, Z Matuskova, S Vrankova, R Rehakova, M Kovacsova, O Pechanova
Melatonin, a multitasking indolamine, seems to be involved in a variety of physiological and metabolic processes via both receptor-mediated and receptor-independent mechanisms. The aim of our study was to find out whether melatonin can affect blood pressure (BP), nitric oxide synthase (NOS) activity, eNOS and nNOS protein expressions in rats with metabolic syndrome (SHR/cp). Rats were divided into four groups: 6-week-old male WKY andSHR/cp and age-matched WKY and SHR/cp treated with melatonin (10 mg/kg/day) for 3 weeks...
October 24, 2016: Physiological Research
Miao Liu, Xing Xing Liu, Xiao Lin He, Li Juan Liu, Hao Wu, Cai Xian Tang, Yong Song Zhang, Chong Wei Jin
Nitric oxide (NO) and ethylene respond to biotic and abiotic stresses through either similar or independent processes. This study examines the mechanism underlying the effects of NO and ethylene on promoting root hair development in Arabidopsis under magnesium (Mg) deficiency. The interaction between NO and ethylene in the regulation of Mg deficiency-induced root hair development was investigated using NO- and ethylene-related mutants and pharmacological methods. Mg deficiency triggered a burst of NO and ethylene, accompanied by a stimulated development of root hairs...
October 24, 2016: New Phytologist
Sana Iqbal, Erik G Hayman, Caron Hong, Jesse A Stokum, David B Kurland, Volodymyr Gerzanich, J Marc Simard
Aneurysmal subarachnoid hemorrhage (SAH) typically carries a poor prognosis. Growing evidence indicates that overabundant production of nitric oxide (NO) may be responsible for a large part of the secondary injury that follows SAH. Although SAH modulates the activity of all three isoforms of nitric oxide synthase (NOS), the inducible isoform, NOS-2, accounts for a majority of NO-mediated secondary injuries after SAH. Here, we review the indispensable physiological roles of NO that must be preserved, even while attempting to downmodulate the pathophysiologic effects of NO that are induced by SAH...
2016: Brain Circulation
Jennifer Wang, Nicole Graf, Susan Arbuckle
No abstract text is available yet for this article.
February 2016: Pathology
Sagarika Tripathy, Anthony Kelmann, Yuen Chan
No abstract text is available yet for this article.
February 2016: Pathology
Aaron Wilson, Vasily A Yakovlev
Cancer development and progression have been linked to oxidative stress, a condition characterized by unbalanced increase in ROS and RNS production. The main endogenous initiators of the redox imbalance in cancer cells are defective mitochondria, elevated NOX activity, and uncoupled NOS3. Traditionally, most attention has been paid to direct oxidative damage to DNA by certain ROS. However, increase in oxidative DNA lesions does not always lead to malignancy. Hence, additional ROS-dependent, pro-carcinogenic mechanisms must be important...
October 19, 2016: Free Radical Biology & Medicine
Y Berlin-Broner, M Febbraio, L Levin
A systematic review was conducted to assess the association between apical periodontitis (AP) and cardiovascular disease (CVD). Studies published from the earliest date available until September 2015 were retrieved from the Medline, PubMed and Embase databases. The included studies reported the results from observational studies and assessed the link between AP and CVD as confirmed by one of the following criteria: diagnosed coronary artery disease, angina pectoris, acute myocardial infarction, stroke, or mortality caused by cardiac pathology...
October 21, 2016: International Endodontic Journal
C Nos, K B Clough, P Bonnier, S Lasry, G Le Bouedec, B Flipo, J-M Classe, M-C Missana, V Doridot, S Giard, H Charitansky, A Charles-Nelson, A-S Bats, C Ngo
BACKGROUND: Two thirds of node-positive breast cancer patients have limited pN1 disease and could benefit from a less extensive axillary lymph node dissection (ALND). METHODS: 172 breast cancers patients requiring an ALND were prospectively enrolled in the Sentibras Protocol of Axillary Reverse Mapping (ARM). Radioisotope was injected in the ipsilateral hand the day before surgery. ALND was standard. Removed lymph nodes were classified into non radioactive nodes and radioactive nodes (ARM nodes)...
August 26, 2016: European Journal of Surgical Oncology
Kristy S Yap, Murray B Urowitz, Quenby Mahood, Jorge Medina-Rosas, Arthy Sabapathy, Daeria Lawson, Jiandong Su, Dafna D Gladman, Zahi Touma
OBJECTIVES: To study the utility of lupus serology as a predictor for kidney graft outcome in (a) a systematic literature review (SLR) and (b) the Toronto lupus cohort (TLC). METHODS: For the SLR, a comprehensive literature search was performed to identify the articles reporting on the serology at renal transplantation (RT) and on the outcome of RT. Studies were critically appraised using the Newcastle Ottawa Scale (NOS). Patients who underwent RT in the TLC were identified and grouped into graft failure and graft survival...
September 21, 2016: Seminars in Arthritis and Rheumatism
Vesela Ivanova, Tihomir Dikov, Nadya Dimitrova
PURPOSE: To provide an overview of the morphologic subtypes of ovarian carcinomas in Bulgaria in relation to current healthcare organization using Bulgarian National Cancer Registry data. Further, we investigated hospital volume as a factor influencing the quality of care for patients with ovarian cancer. METHODS: Bulgarian National Cancer Registry ovarian carcinoma data were retrieved (2009-2011) and distribution of histologic types was analyzed. Cases were divided and compared with respect to main treatment: no surgery, surgery at hospitals dealing with ≥30 ovarian cancer patients/year (high volume), and surgery at hospitals dealing with <30 ovarian cancer patients/year (low volume)...
October 8, 2016: Tumori
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"