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https://www.readbyqxmd.com/read/29352623/effect-of-method-of-anesthesia-on-the-reproductive-and-obstetric-outcomes-of-heterotopic-pregnancies
#1
F Liu, Y F Liu, J Liu, Y Huang, G F Xu, J Cai, Y Chen, Y Q Wu, Y Y Ying, R J Zhang, D Zhang
BACKGROUND: Anesthesia is commonly used for surgical termination of the extrauterine component of heterotopic pregnancy. We sought to evaluate the effects of general and regional anesthesia during salpingectomy on reproductive and obstetric outcomes of heterotopic pregnancies. METHODS: A two-center, retrospective cohort study was conducted, and 49 heterotopic pregnancies were included. Baseline characteristics, reproductive and obstetric outcomes were compared between the general anesthesia and regional anesthesia groups...
December 7, 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/29352475/characteristics-of-proanthocyanidins-in-leaves-of-chamaecyparis-obtusa-var-formosana-as-strong-%C3%AE-glucosidase-inhibitors
#2
Chia-Yun Hsu, Gong-Min Lin, Huan-You Lin, Shang-Tzen Chang
BACKGROUND: In recent decades there has been a growing demand for natural products with a view to using them as α-glucosidase inhibitors for reducing postprandial hyperglycemia. The hot water extract from Chamaecyparis obtusa var. formosana (Hayata) Rehder (Cupressaceae) (HWE) leaves and its soluble fractions were screened for α-glucosidase inhibition properties. The n-butanol soluble fraction of HWE was further fractionated into fourteen subfractions (B1-B14) using a Sephadex LH-20 column...
January 20, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29352468/developmental-plasticity-of-gabaergic-neurotransmission-to-brainstem-motoneurons
#3
Lila Buls Wollman, Richard B Levine, Ralph F Fregosi
Nicotinic acetylcholine receptor (nAChR) signalling regulates neuronal differentiation and synaptogenesis. Here we test the hypothesis that developmental nicotine exposure (DNE) disrupts the development of GABAergic synaptic transmission to hypoglossal motoneurons (XIIMNs). GABAergic spontaneous and miniature inhibitory postsynaptic currents (sIPSC/mIPSC) were recorded from XIIMNs in brainstem slices from control and DNE rat pups of either sex, 1-5 days old, at baseline and following acute stimulation of nAChRs with nicotine...
January 20, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29352349/factors-affecting-n-terminal-pro-b-type-natriuretic-peptide-levels-in-preterm-infants-and-use-in-determination-of-haemodynamic-significance-of-patent-ductus-arteriosus
#4
Sarah Louise Harris, Kiran More, Bronwyn Dixon, Richard Troughton, Chris Pemberton, John Horwood, Nicola Ellis, Nicola Austin
This study aimed to investigate factors affecting N-terminal pro-B-type natriuretic peptide (NTproBNP) in preterm infants and the ability of NTproBNP to predict haemodynamically significant patent ductus arteriosus (HsPDA). Prospective cohort study of 51 infants < 30 weeks gestation. Blood NTproBNP and heart ultrasound were performed on day of life 3, 10, 28 and 36 weeks corrected age. NTproBNP levels analysed for prediction of HsPDA. The effect of gestational age, ventilation, hypoxia, bronchopulmonary dysplasia (BPD), creatinine and haemoglobin levels on NTproBNP levels were investigated...
January 19, 2018: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29352320/high-level-production-and-purification-in-a-functional-state-of-an-extrasynaptic-gamma-aminobutyric-acid-type-a-receptor-containing-%C3%AE-4%C3%AE-3%C3%AE-subunits
#5
Xiaojuan Zhou, Rooma Desai, Yinghui Zhang, Wojciech J Stec, Keith W Miller, Youssef Jounaidi
The inhibitory γ-aminobutyric acid type A receptors are implicated in numerous physiological processes, including cognition and inhibition of neurotransmission, rendering them important molecular targets for many classes of drugs. Functionally, the entire GABAAR family of receptors can be subdivided into phasic, fast acting synaptic receptors, composed of α-, β- and γ-subunits, and tonic extrasynaptic receptors, many of which contain the δ-subunit in addition to α- and β-subunits. Whereas the subunit arrangement of the former group is agreed upon, that of the αβδ GABAARs remains unresolved by electrophysiological and pharmacological research...
2018: PloS One
https://www.readbyqxmd.com/read/29352274/compliance-free-digital-set-and-analog-reset-synaptic-characteristics-of-sub-tantalum-oxide-based-neuromorphic-device
#6
Yawar Abbas, Yu-Rim Jeon, Andrey Sergeevich Sokolov, Sohyeon Kim, Boncheol Ku, Changhwan Choi
A two terminal semiconducting device like a memristor is indispensable to emulate the function of synapse in the working memory. The analog switching characteristics of memristor play a vital role in the emulation of biological synapses. The application of consecutive voltage sweeps or pulses (action potentials) changes the conductivity of the memristor which is considered as the fundamental cause of the synaptic plasticity. In this study, a neuromorphic device using an in-situ growth of sub-tantalum oxide switching layer is fabricated, which exhibits the digital SET and analog RESET switching with an electroforming process without any compliance current (compliance free)...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352263/mammalian-endoreplication-emerges-to-reveal-a-potential-developmental-timer
#7
REVIEW
Alberto Gandarillas, Rut Molinuevo, Natalia Sanz-Gómez
Among the most intriguing and relevant questions in physiology is how developing tissues correctly coordinate proliferation with differentiation. Endoreplication, in a broad sense, is a consequence of a cell division block in the presence of an active cell cycle, and it typically occurs as cells differentiate terminally to fulfill a specialised function. Until recently, endoreplication was thought to be a rare variation of the cell cycle in mammals, more common in invertebrates and plants. However, in the last years, endoreplication has been uncovered in various tissues in mammalian organisms, including human...
January 19, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29352245/av2-protein-of-tomato-leaf-curl-palampur-virus-promotes-systemic-necrosis-in-nicotiana-benthamiana-and-interacts-with-host-catalase2
#8
Poonam Roshan, Aditya Kulshreshtha, Surender Kumar, Rituraj Purohit, Vipin Hallan
Tomato leaf curl Palampur virus (ToLCPalV) is a whitefly-transmitted, bipartite begomovirus. Here, we demonstrated that ectopic expression of AV2 from a Potato virus X (PVX)-based vector accelerated systemic necrosis and reactive oxygen species (ROS) accumulation in Nicotiana benthamiana. Furthermore, 10 amino acids from N-terminal region of AV2 were found to be associated with the systemic necrosis symptom/phenotype. Mutational studies of ToLCPalV infectious clones lacking the AV2 revealed that AV2 is essential for the systemic movement of DNA-A, symptom severity and viral DNA accumulation...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352166/epstein-barr-virus-encoded-latent-membrane-protein-1-suppresses-necroptosis-through-targeting-ripk1-3-ubiquitination
#9
Xiaolan Liu, Yueshuo Li, Songling Peng, Xinfang Yu, Wei Li, Feng Shi, Xiangjian Luo, Min Tang, Zheqiong Tan, A M Bode, Ya Cao
Necroptosis is an alternative programmed cell death pathway that is unleashed in the absence of apoptosis and mediated by signaling complexes containing receptor-interating protein kinase 1 (RIPK1) and RIPK3. This form of cell death has recently been implicated in host defense system to eliminate pathogen-infected cells. However, only a few viral species such as herpes simplex virus (HSV) and cytomegalovirus (CMV) have evolved mechanisms inhibiting necroptosis to overcome host antiviral defense, which is important for successful pathogenesis...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29352146/effects-of-renal-denervation-on-cardiac-structural-and-functional-abnormalities-in-patients-with-resistant-hypertension-or-diastolic-dysfunction
#10
Shiying Wang, Suxia Yang, Xinxin Zhao, Jun Shi
The aim of the present study is to systematically evaluate the impact of RDN on cardiac structure and function in patients with resistant hypertension (RH) or diastolic dysfunction. We retrieved Pubmed, Embase and Cocharane Library databases, from inception to April 1st, 2016. Studies reporting left ventricular mass (LVMI) or left ventricular (LV) diastolic function (reflected by the ratio of mitral inflow velocity to annular relaxation velocity [E/e']) responses to RDN were included. Two randomized controlled trials (RCTs), 3 controlled studies and 11 uncontrolled studies were finally identified...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352143/ribosomal-protein-us7-rps5-serine-223-in-protein-kinase-mediated-phosphorylation-and-ribosomal-small-subunit-maturation
#11
Makoto Tomioka, Mitsugu Shimobayashi, Makoto Kitabatake, Mutsuhito Ohno, Yasunori Kozutsumi, Shogo Oka, Hiromu Takematsu
Cellular translation should be precisely controlled in response to extracellular cues. However, knowledge is limited concerning signal transduction-regulated translation. In the present study, phosphorylation was identified in the 40S small subunit ribosomal protein uS7 (Yjr123w/previously called as Rps5) by Ypk1 and Pkc1, AGC family protein kinases in yeast Saccharomyces cerevisiae. Serine residue 223 (Ser223) of uS7 in the conserved C-terminal region was crucial for this phosphorylation event. S223A mutant uS7 caused severe reduction of small ribosomal subunit production, likely due to compromised interaction with Rio2, resulting in both reduced translation and reduced cellular proliferation...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352041/stress-signaling-jnk2-crosstalk-with-camkii-underlies-enhanced-atrial-arrhythmogenesis
#12
Jiajie Yan, Weiwei Zhao, Justin K Thomson, Xianlong Gao, Dominic M DeMarco, Elena Carrillo, Biyi Chen, Xiaomin Wu, Kenneth S Ginsburg, Mamdouh Bakhos, Donald M Bers, Mark E Anderson, Long-Sheng Song, Michael Fill, Xun Ai
Rationale: Atrial fibrillation (AF) is the most common arrhythmia and advanced age is an inevitable and predominant AF risk factor. However, the mechanisms that couple aging and AF propensity remain unclear, making targeted therapeutic interventions unattainable. Objective: To explore the functional role of an important stress-response c-Jun N-terminal kinase (JNK) in sarcoplasmic reticulum (SR) Ca2+ handling and consequently Ca2+-mediated atrial arrhythmias. Methods and Results: We employed a series of cutting-edge electrophysiological and molecular techniques, exploited the power of transgenic mouse models to detail the molecular mechanism, and verified its clinical applicability in parallel studies on donor human hearts...
January 19, 2018: Circulation Research
https://www.readbyqxmd.com/read/29351934/continuous-subcutaneous-levetiracetam-in-end-of-life-care
#13
Inês Furtado, Fernando Gonçalves, João Gonçalves, João Neves
Seizures constitute a determining aspect in quality of life and are frequently challenging in palliative care-a field where treatment has yet to be standardised. Levetiracetam-a new generation anticonvulsant-has proved efficacy both through oral, as well as intravenous administration in the general population. This case reports on the use of continuous subcutaneous levetiracetam to effectively control seizures in a terminally ill patient without patent oral route.
January 18, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29351914/high-resolution-transcription-maps-reveal-the-widespread-impact-of-roadblock-termination-in-yeast
#14
Tito Candelli, Drice Challal, Jean-Baptiste Briand, Jocelyne Boulay, Odil Porrua, Jessie Colin, Domenico Libri
Transcription termination delimits transcription units but also plays important roles in limiting pervasive transcription. We have previously shown that transcription termination occurs when elongating RNA polymerase II (RNAPII) collides with the DNA-bound general transcription factor Reb1. We demonstrate here that many different DNA-binding proteins can induce termination by a similar roadblock (RB) mechanism. We generated high-resolution transcription maps by the direct detection of RNAPII upon nuclear depletion of two essential RB factors or when the canonical termination pathways for coding and non-coding RNAs are defective...
January 19, 2018: EMBO Journal
https://www.readbyqxmd.com/read/29351793/retinal-complications-of-gout-a-case-report-and-review-of-the-literature
#15
Ying Jiang, Jason E Brenner, William J Foster
BACKGROUND: There have been few reported findings of posterior segment complications of gout. While exudative lesions, an increased risk of macular degeneration, and vascular occlusions have been previously reported, to our knowledge, refractile macular lesions have not been reported in a patient with chronic uncontrolled gout. CASE PRESENTATION: Highly refractile, crystal-like lesions were found in the macula of a 62 year old male patient with chronically uncontrolled gout...
January 19, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29351763/an-overview-of-the-impact-of-rare-disease-characteristics-on-research-methodology
#16
REVIEW
Danielle Whicher, Sarah Philbin, Naomi Aronson
BACKGROUND: About 30 million individuals in the United States are living with a rare disease, which by definition have a prevalence of 200,000 or fewer cases in the United States ([National Organization for Rare Disorders], [About NORD], [2016]). Disease heterogeneity and geographic dispersion add to the difficulty of completing robust studies in small populations. Improving the ability to conduct research on rare diseases would have a significant impact on population health. The purpose of this paper is to raise awareness of methodological approaches that can address the challenges to conducting robust research on rare diseases...
January 19, 2018: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29351744/risk-factors-for-first-time-acute-myocardial-infarction-patients-in-trinidad
#17
M Bahall, T Seemungal, G Legall
BACKGROUND: The relative importance of coronary artery disease (CAD) risk varies globally. The aim of this study was to determine CAD risk factors for acute myocardial infarction (AMI) among patients in public health care institutions in Trinidad using a case-control type study design. METHODS: The sample comprised 251 AMI patients hospitalized between March 1, 2011 and April 30, 2012 and 464 age- and sex-matched non-AMI patients with no terminal or life-threatening illness and who did not undergo treatment for CAD...
January 19, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29351732/nutrient-depletion-and-tor-inhibition-induce-18s-and-25s-ribosomal-rnas-resistant-to-a-5-phosphate-dependent-exonuclease-in-candida-albicans-and-other-yeasts
#18
Jacob Fleischmann, Miguel A Rocha
BACKGROUND: Messenger RNA (mRNA) represents a small percentage of RNAs in a cell, with ribosomal RNA (rRNA) making up the bulk of it. To isolate mRNA from eukaryotes, typically poly-A selection is carried out. Recently, a 5´-phosphate-dependent, 5´→3´ processive exonuclease called Terminator has become available. It will digest only RNA that has a 5´-monophosphate end and therefore it is very useful to eliminate most of rRNAs in cell. RESULTS: We have found that in the pathogenic yeast Candida albicans, while 18S and 25S components isolated from yeast in robust growth phase are easily eliminated by Terminator, those isolated from cells in the nutritionally diminished stationary phase, become resistant to digestion by this enzyme...
January 19, 2018: BMC Molecular Biology
https://www.readbyqxmd.com/read/29351720/structural-interconversion-in-alzheimer-s-amyloid-%C3%AE-16-35-peptide-in-an-aqueous-solution
#19
Nelson Alves, Rafael B Frigori
Structural properties of Aβ(16-35) fragment are investigated as a model for the amyloid-β peptide excluding its coil-inducing terminals. Our Replica-Exchange Molecular Dynamics simulations using all-atoms and explicit aqueous solvation widely reduce any structural bias. The principal folding pathway shows direct conversion of coil to β-sheet, without the long proposed helix intermediates. Our PCA analysis indicates that the fragment is also intrinsically disordered, as the full amyloid-β peptide. Thus, the observed folding mechanism lacks free-energy barriers and any peaks in the thermal capacity...
January 19, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29351633/evolutionary-genetics-of-cytoplasmic-incompatibility-genes-cifa-and-cifb-in-prophage-wo-of-wolbachia
#20
Amelia R I Lindsey, Danny W Rice, Sarah R Bordenstein, Andrew W Brooks, Seth R Bordenstein, Irene L G Newton
The bacterial endosymbiont Wolbachia manipulates arthropod reproduction to facilitate its maternal spread through host populations. The most common manipulation is cytoplasmic incompatibility (CI): Wolbachia-infected males produce modified sperm that cause embryonic mortality, unless rescued by embryos harboring the same Wolbachia. The genes underlying CI, cifA and cifB, were recently identified in the eukaryotic association module of Wolbachia's prophage WO. Here, we use transcriptomic and genomic approaches to address three important evolutionary facets of the cif genes...
January 17, 2018: Genome Biology and Evolution
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