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Inhibitory control

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https://www.readbyqxmd.com/read/29346603/homologous-stress-adaptation-antibiotic-resistance-and-biofilm-forming-ability-of-salmonella-enterica-serovar-heidelberg-atcc8326-on-different-food-contact-surfaces-following-exposure-to-sublethal-chlorine-concentrations
#1
Tomi Obe, Rama Nannapaneni, Chander Shekhar Sharma, Aaron Kiess
Salmonella enterica serovar Heidelberg (American Type Culture Collection; ATCC 8326) was examined for the ability to adapt to the homologous stress of chlorine through exposure to increasing chlorine concentrations (25 ppm daily increments) in tryptic soy broth (TSB). The tested strain exhibited an acquired tolerance to chlorine in TSB with the tolerant cells growing in concentrations up to 400 ppm. In addition, the chlorine stressed cells displayed rugose morphology on tryptic soy agar (TSA) plates at 37°C...
January 13, 2018: Poultry Science
https://www.readbyqxmd.com/read/29346496/melanopsin-system-dysfunction-in-smith-magenis-syndrome-patients
#2
Mirella Telles Salgueiro Barboni, Clarissa Bueno, Balázs Vince Nagy, Patrícia Lobo Maia, Kallene Summer Moreira Vidal, Rosana Cardoso Alves, Russel J Reiter, Fernanda Gaspar do Amaral, José Cipolla-Neto, Dora Fix Ventura
Purpose: Smith-Magenis syndrome (SMS) causes sleep disturbance that is related to an abnormal melatonin profile. It is not clear how the genomic disorder leads to a disturbed synchronization of the sleep/wake rhythm in SMS patients. To evaluate the integrity of the intrinsically photosensitive retinal ganglion cell (ipRGC)/melanopsin system, the transducers of the light-inhibitory effect on pineal melatonin synthesis, we recorded pupillary light responses (PLR) in SMS patients. Methods: Subjects were SMS patients (n = 5), with molecular diagnosis and melatonin levels measured for 24 hours and healthy controls (n = 4)...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29345909/a-metabolomics-study-reveals-enhanced-inhibition-and-metabolic-dysregulation-in-e-coli-induced-by-lactobacillus-acidophilus-fermented-black-tea-extract
#3
Kundi Yang, Mattew Duley, Jiangjiang Zhu
This study examined the ability of Lactobacillus acidophilus (LA) to ferment black tea extract (BTE), and the enhancement of Escherichia coli cellular uptake of phenolic compounds when this bacteria was incubated with fermented BTE. The inhibitory effects of BTE to E. coli bacteria, with and w/o fermentation, were compared. Several intracellular phenolic compounds, as well as metabolic profiles of E. coli with and w/o treatments, were also determined using a HPLC-MS/MS-based approach. Our results showed that out of three concentrations from the non-fermented BTE treatment, only the extract from the 25 mg/ml tea leaves solution could inhibit E...
January 18, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29344945/cumulative-risk-exposure-moderates-the-association-between-parasympathetic-reactivity-and-inhibitory-control-in-preschool-age-children
#4
Ryan J Giuliano, Leslie E Roos, Jessica D Farrar, Elizabeth A Skowron
A child's cumulative risk for early exposure to stress has been linked to alterations of self-regulation outcomes, including neurobiological correlates of inhibitory control (IC). We examined whether children's ability to engage the parasympathetic nervous system impacts how risk affects IC. Children ages 3-5 years completed two laboratory measures of IC while respiratory sinus arrhythmia (RSA) was measured, indexing parasympathetic activity. Children with greater risk demonstrated lower IC; risk also moderated associations between RSA reactivity and IC...
January 18, 2018: Developmental Psychobiology
https://www.readbyqxmd.com/read/29344778/the-relationship-between-vancomycin-trough-concentrations-and-auc-mic-ratios-in-pediatric-patients-a-qualitative-systematic-review
#5
REVIEW
Stacey Tkachuk, Kyle Collins, Mary H H Ensom
BACKGROUND: In adults, the area under the concentration-time curve (AUC) divided by the minimum inhibitory concentration (MIC) is associated with better clinical and bacteriological response to vancomycin in patients with methicillin-resistant Staphylococcus aureus who achieve target AUC/MIC ≥ 400. This target is often extrapolated to pediatric patients despite the lack of similar evidence. The impracticalities of calculating the AUC in practice means vancomycin trough concentrations are used to predict the AUC/MIC...
January 17, 2018: Paediatric Drugs
https://www.readbyqxmd.com/read/29344654/tunicamycin-inhibits-colon-carcinoma-growth-and-aggressiveness-via-modulation-of-the-erk-jnk-mediated-akt-mtor-signaling-pathway
#6
Shuping You, Weihong Li, Yun Guan
Epidemiology and evidence have demonstrated that colon carcinoma is one of the most common gastrointestinal tumors in the clinic. Reports have suggested that Tunicamycin significantly inhibits aggressiveness of colon carcinoma cells by promotion of apoptosis. In the present study, the inhibitory effect of tunicamycin on colon cancer cells and the potential underlying molecular mechanism was investigated. Western blotting, immunohistochemistry, apoptotic assays and immunofluorescence were used to analyze the therapeutic effects of tunicamycin on apoptosis, growth, aggressiveness and cell cycle of colon tumor cells, by downregulation of fibronectin, vimentin and E‑cadherin expression levels...
January 17, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29344254/inhibitory-effect-of-the-low-toxic-exogenous-aryl-hydrocarbon-receptor-modulator-3-3-diindolylmethane-on-gastric-cancer-in-mice
#7
Mingli Su, Chenchen Qian, Yumin Hu, Wenhua Lu, Rongkang Huang, Minhu Chen, Jie Chen
3'3-Diindolylmethane (DIM) has been proved to exhibit anticancer properties in many solid tumors. In our previous study, we demonstrated that DIM inhibited SGC7901 cell proliferation by inducing apoptosis and delaying cell cycle progression. Herein, we further explored the anti-tumor effect of DIM on SGC-7901 tumor bearing mice. Tumors were excised, weighed, and tested by western blot and TdT-UTP nick-end labeling (TUNEL) assay. Blood samples were collected for biochemical analysis. The expression levels of AhR and cytochrome P450, family 1, subfamily A, polypeptide 1 (CYP1A1) protein were evaluated by western-blot assay...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29344221/livin-serves-as-a-prognostic-marker-for-mid-distal-rectal-cancer-and-a-target-of-mid-distal-rectal-cancer-treatment
#8
Qi-Biao Su, Lai-You Wang, Gui-Ning Wei, Li-Zhen Liao, Jie Zhao, Hong-Jun Liu, Yu-Long Shi, Le-Ping Li, Chen-Sheng Li
Livin is a novel member of the inhibitor of apoptosis protein family, which has been identified to be expressed in various malignancies and is suggested to be associated with poor prognostic significance. However, no data are available concerning the significance of livin in mid-distal rectal cancer. In the present study, livin expression, and its association with clinicopathological characteristics and prognosis was examined in patients with mid-distal rectal cancer. Apoptotic susceptibility, invasion capacity and chemosensitivity of LoVo cells were investigated using small interfering RNA (siRNA)-mediated knockdown of livin...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29343455/adolescent-social-stress-increases-anxiety-like-behavior-and-alters-synaptic-transmission-without-influencing-nicotine-responses-in-a-sex-dependent-manner
#9
Michael J Caruso, Nicole A Crowley, Dana E Reiss, Jasmine I Caulfield, Bernhard Luscher, Sonia A Cavigelli, Helen M Kamens
Early-life stress is a risk factor for comorbid anxiety and nicotine use. Because little is known about the factors underlying this comorbidity, we investigated the effects of adolescent stress on anxiety-like behavior and nicotine responses within individual animals. Adolescent male and female C57BL/6J mice were exposed to chronic variable social stress (CVSS; repeated cycles of social isolation + social reorganization) or control conditions from postnatal days (PND) 25-59. Anxiety-like behavior and social avoidance were measured in the elevated plus-maze (PND 61-65) and social approach-avoidance test (Experiment 1: PND 140-144; Experiment 2: 95-97), respectively...
January 14, 2018: Neuroscience
https://www.readbyqxmd.com/read/29343429/translational-control-of-human-acetyl-coa-carboxylase-1-mrna-is-mediated-by-an-internal-ribosome-entry-site-in-response-to-er-stress-serum-deprivation-or-hypoxia-mimetic-cocl2
#10
Fabrizio Damiano, Mariangela Testini, Romina Tocci, Gabriele V Gnoni, Luisa Siculella
Acetyl-CoA carboxylase 1 (ACC1) is a cytosolic enzyme catalyzing the rate limiting step in de novo fatty acid biosynthesis. There is mounting evidence showing that ACC1 is susceptible to dysregulation and that it is over-expressed in liver diseases associated with lipid accumulation and in several cancers. In the present study, ACC1 regulation at the translational level is reported. Using several experimental approaches, the presence of an internal ribosome entry site (IRES) has been established in the 5' untranslated region (5' UTR) of the ACC1 mRNA...
January 14, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29342363/differential-effects-of-inhibitory-g-protein-isoforms-on-g-protein-gated-inwardly-rectifying-k-currents-in-adult-murine-atria
#11
Muriel Nobles, David Montaigne, Sonia Sebastian, Lutz Birnbaumer, Andrew Tinker
G-protein gated inwardly rectifying K+ (GIRK) channels are the major inwardly rectifying K+ currents in cardiac atrial myocytes and an important determinant of atrial electrophysiology. Inhibitory G-protein alpha subunits can both mediate activation via acetylcholine but can also supress basal currents in the absence of agonist. We studied this phenomenon using whole cell patch clamping in murine atria from mice with global genetic deletion of Gαi2, combined deletion of Gαi1/Gαi3 and littermate controls...
January 17, 2018: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29342189/the-microbiota-metabolite-indole-inhibits-salmonella-virulence-involvement-of-the-phopq-two-component-system
#12
Nandita Kohli, Zeni Crisp, Rebekah Riordan, Michael Li, Robert C Alaniz, Arul Jayaraman
The microbial community present in the gastrointestinal tract is an important component of the host defense against pathogen infections. We previously demonstrated that indole, a microbial metabolite of tryptophan, reduces enterohemorrhagic Escherichia coli O157:H7 attachment to intestinal epithelial cells and biofilm formation, suggesting that indole may be an effector/attenuator of colonization for a number of enteric pathogens. Here, we report that indole attenuates Salmonella Typhimurium (Salmonella) virulence and invasion as well as increases resistance to colonization in host cells...
2018: PloS One
https://www.readbyqxmd.com/read/29342056/-product-versus-process-measures-in-assessing-speech-recognition-outcomes-in-adults-with-cochlear-implants
#13
Aaron C Moberly, Irina Castellanos, Kara J Vasil, Oliver F Adunka, David B Pisoni
HYPOTHESES: 1) When controlling for age in postlingual adult cochlear implant (CI) users, information-processing functions, as assessed using "process" measures of working memory capacity, inhibitory control, information-processing speed, and fluid reasoning, will predict traditional "product" outcome measures of speech recognition. 2) Demographic/audiologic factors, particularly duration of deafness, duration of CI use, degree of residual hearing, and socioeconomic status, will impact performance on underlying information-processing functions, as assessed using process measures...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29341416/resveratrol-influences-pancreatic-islets-by-opposing-effects-on-electrical-activity-and-insulin-release
#14
Simone Brouwer, Theresa Hoffmeister, Anne Gresch, Lisa Schönhoff, Martina Düfer
SCOPE: Resveratrol is suggested to improve glycemic control by activation of sirtuin 1 (SIRT1) and has already been tested clinically. Our investigation characterizes the targets of resveratrol in pancreatic beta cells and their contribution to short- and long-term effects on insulin secretion. METHODS AND RESULTS: Islets or beta cells were isolated from C57Bl/6N mice. Electrophysiology was performed with microelectrode arrays and patch-clamp technique, insulin secretion and content were determined by radioimmunoassay, cAMP was measured by enzyme-linked immunosorbent assay and cytosolic Ca2+ concentration by fluorescence methods...
January 17, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29341361/parvalbumin-interneuron-mediated-feedforward-inhibition-controls-signal-output-in-the-deep-layers-of-the-perirhinal-entorhinal-cortex
#15
Janske G P Willems, Wytse J Wadman, Natalie L M Cappaert
The perirhinal (PER) and lateral entorhinal (LEC) cortex form an anatomical link between the neocortex and the hippocampus. However, neocortical activity is transmitted through the PER and LEC to the hippocampus with a low probability, suggesting the involvement of the inhibitory network. This study explored the role of interneuron mediated inhibition, activated by electrical stimulation in the agranular insular cortex (AiP), in the deep layers of the PER and LEC. Activated synaptic input by AiP stimulation rarely evoked action potentials in the PER-LEC deep layer excitatory principal neurons, most probably because the evoked synaptic response consisted of a small excitatory and large inhibitory conductance...
January 17, 2018: Hippocampus
https://www.readbyqxmd.com/read/29341331/the-relationship-between-thalamic-gaba-content-and-resting-cortical-rhythm-in-neuropathic-pain
#16
Flavia Di Pietro, Paul M Macey, Caroline D Rae, Zeynab Alshelh, Vaughan G Macefield, E Russell Vickers, Luke A Henderson
Recurrent thalamocortical connections are integral to the generation of brain rhythms and it is thought that the inhibitory action of the thalamic reticular nucleus is critical in setting these rhythms. Our work and others' has suggested that chronic pain that develops following nerve injury, that is, neuropathic pain, results from altered thalamocortical rhythm, although whether this dysrhythmia is associated with thalamic inhibitory function remains unknown. In this investigation, we used electroencephalography and magnetic resonance spectroscopy to investigate cortical power and thalamic GABAergic concentration in 20 patients with neuropathic pain and 20 pain-free controls...
January 17, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29341203/food-specific-inhibitory-control-under-negative-mood-in-binge-eating-disorder-evidence-from-a-multimethod-approach
#17
Elisabeth J Leehr, Kathrin Schag, Thomas Dresler, Moritz Grosse-Wentrup, Martin Hautzinger, Andreas J Fallgatter, Stephan Zipfel, Katrin E Giel, Ann-Christine Ehlis
OBJECTIVE: Inhibitory control has been discussed as a developmental and maintenance factor in binge-eating disorder (BED). The current study is the first aimed at investigating inhibitory control in a negative mood condition on a psychophysiological and behavioral level in BED with a combination of electroencephalography (EEG) and eye tracking (ET). METHOD: We conducted a combined EEG and ET study with overweight individuals with BED (BED+, n = 24, mean age = 31, mean BMI = 35 kg/m2 ) and without BED (BED-, n = 23, mean age = 28, mean BMI = 35 kg/m2 ) and a normal-weight (NWC, n = 26, mean age 28, mean BMI = 22 kg/m2 ) control group...
January 17, 2018: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/29340862/effect-of-brewery-wastewater-obtained-from-different-phases-of-treatment-plant-on-seed-germination-of-chickpea-cicer-arietinum-maize-zea-mays-and-pigeon-pea-cajanus-cajan
#18
Rupa Salian, Suhas Wani, Ramamohan Reddy, Mukund Patil
Brewing industry releases large quantities of wastewater after product generation. Brewery wastewater contains organic compounds which are biodegradable in nature. These biodegradable wastes can be recycled and reused and hence considered as suitable products for agriculture. But before using wastewater for agriculture, it is better to evaluate the phytotoxic effects of wastewater on crops. Hence, the main objective of this study is to evaluate the effects of brewery effluent on seed germination and growth parameters of selected crop species like chickpea (Cicer arietinum), maize (Zea mays), and pigeon pea (Cajanus cajan)...
January 17, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29340087/identification-of-antipsychotic-drug-fluspirilene-as-a-potential-anti-glioma-stem-cell-drug
#19
Yu Dong, Takuya Furuta, Hemragul Sabit, Tomohiro Kitabayashi, Shabierjiang Jiapaer, Masahiko Kobayashi, Yasushi Ino, Tomoki Todo, Lei Teng, Atsushi Hirao, Shi-Guang Zhao, Mitsutoshi Nakada
Glioma stem cell (GSC)-targeted therapy is expected to be one of the most innovative approaches to treat patients with glioblastoma (GBM). A number of the drugs that restrain the signaling pathway essential for GSC maintenance have been under clinical trials. Here, we identified fluspirilene, a traditional antipsychotic drug, as a GSC-targeting agent, selected from thousands of existing drugs, and investigated its therapeutic effects against GBM with the purpose of drug repositioning. To develop novel therapeutics targeting GSCs, we initially screened drug libraries for small-molecule compounds showing a greater efficacy, compared to that of controls, in inhibiting the proliferation and survival of different GSC lines using cell proliferation assay...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339535/functional-changes-of-ampa-responses-in-human-induced-pluripotent-stem-cell-derived-neural-progenitors-in-fragile-x-syndrome
#20
Venkat Swaroop Achuta, Tommi Möykkynen, Ulla-Kaisa Peteri, Giorgio Turconi, Claudio Rivera, Kari Keinänen, Maija L Castrén
Altered neuronal network formation and function involving dysregulated excitatory and inhibitory circuits are associated with fragile X syndrome (FXS). We examined functional maturation of the excitatory transmission system in FXS by investigating the response of FXS patient-derived neural progenitor cells to the glutamate analog (AMPA). Neural progenitors derived from induced pluripotent stem cell (iPSC) lines generated from boys with FXS had augmented intracellular Ca2+ responses to AMPA and kainate that were mediated by Ca2+-permeable AMPA receptors (CP-AMPARs) lacking the GluA2 subunit...
January 16, 2018: Science Signaling
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