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https://www.readbyqxmd.com/read/29792471/sex-differences-in-the-anorexigenic-effects-of-dexfenfluramine-and-amphetamine-in-baboons
#1
Richard W Foltin, Suzette M Evans
The anorexigenic effects of intramuscular d-amphetamine HCl (0.06-0.50 mg/kg) and dexfenfluramine HCl (0.25-2.0 mg/kg) were determined in experimentally naïve baboons. A group of 8 adult male baboons was tested prior to a group of 7 adult female baboons. A 120-min session occurred at 9:00 a.m. during which baboons could respond for food pellets. Drug was given 30 min prior to the 9:00 a.m. morning session. Beginning at 11:00 a.m., baboons had a 6-hr multiple-meal session during which they could have up to 4 food pellet meals...
May 24, 2018: Experimental and Clinical Psychopharmacology
https://www.readbyqxmd.com/read/29792189/a-cross-sectional-ecological-analysis-of-international-and-sub-national-health-inequalities-in-commercial-geospatial-resource-availability
#2
Winfred Dotse-Gborgbortsi, Nicola Wardrop, Ademola Adewole, Mair L H Thomas, Jim Wright
BACKGROUND: Commercial geospatial data resources are frequently used to understand healthcare utilisation. Although there is widespread evidence of a digital divide for other digital resources and infra-structure, it is unclear how commercial geospatial data resources are distributed relative to health need. METHODS: To examine the distribution of commercial geospatial data resources relative to health needs, we assembled coverage and quality metrics for commercial geocoding, neighbourhood characterisation, and travel time calculation resources for 183 countries...
May 23, 2018: International Journal of Health Geographics
https://www.readbyqxmd.com/read/29791862/hormone-dependent-breast-cancer-targeting-autophagy-and-pi3k-overcomes-exemestane-acquired-resistance
#3
Cristina Amaral, Tiago Vieira Augusto, Elisiário Tavares-da-Silva, Fernanda M F Roleira, Georgina Correia-da-Silva, Natércia Teixeira
The leading cause of cancer death in women around the world is breast cancer. The aromatase inhibitors (AIs) are considered a first-line treatment for estrogen receptor-positive (ER+ ) breast tumors, in postmenopausal women. Exemestane (Exe) is a powerful steroidal AI, however, despite its therapeutic success, Exe-acquired resistance may occur leading to tumor relapse. Our group previously demonstrated that autophagy acts as a pro-survival process in Exe-induced cell death of ER+ sensitive breast cancer cells...
May 20, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29790993/sleep-pirates-are-we-really-living-through-a-sleep-deprivation-epidemic-and-what-s-stealing-our-sleep
#4
Nathaniel S Marshall, Tea Lallukka
No abstract text is available yet for this article.
June 1, 2018: European Journal of Public Health
https://www.readbyqxmd.com/read/29790961/increased-vulnerability-to-attentional-failure-during-acute-sleep-deprivation-in-women-depends-on-menstrual-phase
#5
Parisa Vidafar, Joshua J Gooley, Angus C Burns, Shantha M W Rajaratnam, Melanie Rueger, Eliza Van Reen, Charles A Czeisler, Steven W Lockley, Sean W Cain
Study Objectives: Investigate sex differences in the effect of sleep deprivation on performance, accounting for menstrual phase in women. Methods: We examined alertness data from 124 healthy women and men (40 women, 84 men; aged 18 - 30 years) who maintained wakefulness for at least 30 hours in a laboratory setting using a constant routine protocol. Objective alertness was assessed every two hours using a 10-minute Psychomotor Vigilance Task. Subjective alertness was assessed every hour via the Karolinska Sleepiness Scale...
May 22, 2018: Sleep
https://www.readbyqxmd.com/read/29790115/n-2-hydroxyphenyl-acetamide-and-its-gold-nanoparticle-conjugation-prevent-glycerol-induced-acute-kidney-injury-by-attenuating-inflammation-and-oxidative-injury-in-mice
#6
Rehan Ahmed Siddiqui, Shabana Usman Simjee, Nurul Kabir, Muhammad Ateeq, M Raza Shah, Syed Saad Hussain
The protective activity of N-(2-hydroxyphenyl)acetamide (NA-2) and NA-2-coated gold nanoparticles (NA-2-AuNPs) in glycerol-treated model of acute kidney injury (AKI) in mice was investigated. NA-2 (50 mg/kg) and NA-2-AuNPs (30 mg/kg) were given to the animals for four days followed by 24-h water deprivation and injection of 50% glycerol (10 ml/kg im). The animals were sacrificed on the next day. Blood and kidneys were collected for biochemical investigations (urea and creatinine), histological studies (hematoxylin and eosin; and periodic acid-Schiff staining), immunohistochemistry (actin and cyclooxygenase-2, Cox-2), and real-time RT-PCR (inducible nitric oxide synthase, iNOS; nuclear factor-κB p50, NFκB; hemeoxygenase-1, HO-1; and kidney injury molecule-1, Kim-1)...
May 22, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29790068/neuritin-attenuates-neuronal-apoptosis-mediated-by-endoplasmic-reticulum-stress-in-vitro
#7
Xiaokun Sun, Linzhi Dai, Hang Zhang, Xuejun He, Fandi Hou, Wengao He, Shijun Tang, Dong Zhao
Neuritin is an extracellular glycophosphatidylinositol-linked protein that promotes neuronal survival, differentiation, function, and repair, but the exact mechanism of this neuroprotective effect remains unclear. Meanwhile, endoplasmic reticulum stress (ERS) induced apoptosis is attracting increased attention. In this work, we hypothesized that neuritin inhibited ERS to protect cortical neurons. To check this hypothesis, we exposed primary cultured cortical neurons to oxygen and glucose deprivation (OGD) for 45 min followed by reperfusion (R) to activate ERS...
May 22, 2018: Neurochemical Research
https://www.readbyqxmd.com/read/29789998/the-expression-and-role-of-lncrna-ax800134-in-hepatitis-b-virus-related-hepatocellular-carcinoma
#8
Kai Zuo, Li Kong, Dong Xue, Yanyan Yang, Linlin Xie
Chronic infection with hepatitis B virus (HBV) is one of most important risk factors for the development of hepatocellular carcinoma (HCC). Several long non-coding RNAs (lncRNAs) have been shown to be involved in the etiology of HBV-related HCC. AX800134 is one recently identified lncRNA associated with HCC. In this study, we validated the upregulated expression of AX800134 in HBV-positive HCC compared with HBV-negative HCC. Furthermore, we found that HBV X protein (HBx) directly triggered AX800134 expression in human hepatoma HepG2 cells...
May 22, 2018: Virus Genes
https://www.readbyqxmd.com/read/29789575/tamoxifen-induced-knockdown-of-the-mitochondrial-calcium-uniporter-in-thy1-expressing-neurons-protects-mice-from-hypoxic-ischemic-brain-injury
#9
Matthew Nichols, Evgeny V Pavlov, George S Robertson
The mitochondrial calcium uniporter (MCU) mediates high-capacity mitochondrial calcium uptake that stimulates energy production. However, excessive MCU activity can cause ischemic heart injury. To examine if the MCU is also involved in hypoxic/ischemic (HI) brain injury, we have generated conditional MCU knockout mice by tamoxifen (TMX) administration to adult MCU-floxed (MCUfl/fl ) mice expressing a construct encoding Thy1-cre/ERT2-eYFP. Relative to TMX/Thy1-cre/ERT2-eYFP controls, HI-induced sensorimotor deficits, forebrain neuron loss and mitochondrial damage were decreased for conditional MCU knockout mice...
May 22, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29789380/metaplasticity-in-the-visual-cortex-crosstalk-between-visual-experience-and-reactive-oxygen-species
#10
José Francis-Oliveira, Guilherme Shuigueto Vilar Higa, Lívia Mendonça Munhoz Dati, Ianê Carvalho Shieh, Roberto De Pasquale
Metaplasticity is the regulation of synaptic plasticity based on the history of previous synaptic activation. This concept was formulated after observing that synaptic changes in the visual cortex are not fixed, but dynamic, and dependent on the history of visual information flux. In visual cortical neurons, sustained synaptic stimulation activate the enzymatic complex NOX2, resulting in the generation of reactive oxygen species (ROS). NOX2 is the main molecular structure responsible for translating neural activity into redox modulation of intracellular signaling pathways involved in plastic changes...
May 22, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29789056/the-six-hour-window-how-the-community-hospital-nursery-can-optimize-outcomes-of-the-infant-with-suspected-hypoxic-ischemic-encephalopathy
#11
Dafina Ibrani, Shanon Molacavage
Perinatal hypoxia is a devastating event before, during, or immediately after birth that deprives an infant's vital organs of oxygen. This injury at birth often requires a complex resuscitation and increases the newborn's risk of hypoxic-ischemic encephalopathy (HIE). The resuscitation team in a community hospital nursery may have less experience with complex resuscitation and post-resuscitation care of this infant than a NICU. This article provides the neonatal nurse in a Level I or Level II nursery with information about resuscitation and post-resuscitation care of an infant at risk of HIE while awaiting transport to a NICU for therapeutic cooling...
May 1, 2018: Neonatal Network: NN
https://www.readbyqxmd.com/read/29788802/acute-effects-of-inhaled-menthol-on-the-rewarding-effects-of-intravenous-nicotine-in-smokers
#12
Gerald W Valentine, Elise E DeVito, Peter I Jatlow, Ralitza Gueorguieva, Mehmet Sofuoglu
OBJECTIVE: This double-blind, placebo controlled study examined whether menthol inhaled from an electronic cigarette (e-cigarette) would change subjective and withdrawal alleviating effects of intravenous nicotine in young adult smokers. METHODS: A total of 32 menthol-preferring smokers and 25 non-menthol-preferring smokers participated in the study that consisted of a random sequence of three different inhaled menthol conditions (0.0%, 0.5%, and 3.2%) across three test sessions (a single menthol condition per session)...
May 1, 2018: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29788164/what-is-the-optimal-systemic-treatment-of-men-with-metastatic-hormone-naive-prostate-cancer-a-stopcap-systematic-review-and-network-meta-analysis
#13
C L Vale, D J Fisher, I R White, J R Carpenter, S Burdett, N W Clarke, K Fizazi, G Gravis, N D James, M D Mason, M K B Parmar, L H Rydzewska, C J Sweeney, M R Spears, M R Sydes, J F Tierney
Background: Our prior Systemic Treatment Options for Cancer of the Prostate systematic reviews showed improved survival for men with metastatic hormone-naive prostate cancer when abiraterone acetate plus prednisolone/prednisone (AAP) or docetaxel (Doc), but not zoledronic acid (ZA), were added to androgen-deprivation therapy (ADT). Trial evidence also suggests a benefit of combining celecoxib (Cel) with ZA and ADT. To establish the optimal treatments, a network meta-analysis (NMA) was carried out based on aggregate data (AD) from all available studies...
May 1, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29788158/cell-wall-bound-silicon-optimizes-ammonium-uptake-and-metabolism-in-rice-cells
#14
Huachun Sheng, Jie Ma, Junbao Pu, Lijun Wang
Background and Aims: Turgor-driven plant cell growth depends on cell wall structure and mechanics. Strengthening of cell walls on the basis of an association and interaction with silicon (Si) could lead to improved nutrient uptake and optimized growth and metabolism in rice (Oryza sativa). However, the structural basis and physiological mechanisms of nutrient uptake and metabolism optimization under Si assistance remain obscure. Methods: Single-cell level biophysical measurements, including in situ non-invasive micro-testing (NMT) of NH4+ ion fluxes, atomic force microscopy (AFM) of cell walls, and electrolyte leakage and membrane potential, as well as whole-cell proteomics using isobaric tags for relative and absolute quantification (iTRAQ), were performed...
May 16, 2018: Annals of Botany
https://www.readbyqxmd.com/read/29787927/refugees-admission-to-mental-health-institutions-in-norway-is-there-an-ethnic-density-effect
#15
Jon Erik Finnvold, Elisabeth Ugreninov
Some recent European research claims that immigrants settle in urban areas with low scores on level-of-living conditions and a high prevalence of health-risk factors, and that these settlement patterns adversely affect their health. Other studies question the association between immigrant segregation and area deprivation on one hand, and negative health outcomes on the other hand, and identify possible beneficial effects of segregation, specifically the ethnic density effect. This paper aims to explore the possible ethnic density effect among refugees, a sub-population that often appears relatively vulnerable compared with immigrants in general...
May 16, 2018: Social Science & Medicine
https://www.readbyqxmd.com/read/29787772/ginkgolide-k-promotes-astrocyte-proliferation-and-migration-after-oxygen-glucose-deprivation-via-inducing-protective-autophagy-through-the-ampk-mtor-ulk1-signaling-pathway
#16
Ying Zhang, Ju-Mei Miao
Ischemic stroke is the leading cause of death around the world. Ginkgolide K (GK) has been used to treat ischemic stroke due to its neuroprotective potential. However, the molecular mechanism underlying the neuroprotective effect of GK in ischemic stroke is still almost blank. In this study, astrocytes were divided into four groups: control group, oxygen-glucose deprivation (OGD) group, OGD + GK group and OGD + GK + Compound C (CC) group. The viability and proliferation of astrocytes were examined by Cell Counting Kit-8 assay and 5-ethynyl-20-deoxyuridine (EdU) assay, respectively...
May 19, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29787771/inhibition-of-pten-protects-pc12-cells-against-oxygen-glucose-deprivation-induced-cell-death-through-mitoprotection
#17
Fereshteh Farajdokht, Gisou Mohaddes, Elham Karimi-Sales, Taiebeh Kafshdooz, Javad Mahmoudi, Seyed Mohsen Aberoumandi, Pouran Karimi
Mitochondria involve in the determination of ischemic neuronal cell fate through regulation of apoptotic and necrotic cell death. Phosphatase and tensin homolog (PTEN) protein negatively regulates Akt/PKB signaling which is the major cell survival pathway. The current study aimed to examine the impact of SF1670, a potent PTEN inhibitor, on mitochondria-mediated cell survival pathways in an in vitro stroke-like model. PC12 cells were exposed to one hour oxygen and glucose deprivation (OGD) followed by different time points of reperfusion (0, 30, 60, 120 and 180 min) and SF1670 treatments...
May 19, 2018: Brain Research
https://www.readbyqxmd.com/read/29787571/rnai-screening-of-subtracted-transcriptomes-reveals-tumor-suppression-by-taurine-activated-gabaa-receptors-involved-in-volume-regulation
#18
Camiel L C Wielders, Pim van Nierop, Tinke L Vormer, Floris Foijer, Joanne Verheij, Johannes C Lodder, Jesper B Andersen, Huibert D Mansvelder, Hein Te Riele
To identify coding and non-coding suppressor genes of anchorage-independent proliferation by efficient loss-of-function screening, we have developed a method for enzymatic production of low complexity shRNA libraries from subtracted transcriptomes. We produced and screened two LEGO (Low-complexity by Enrichment for Genes shut Off) shRNA libraries that were enriched for shRNA vectors targeting coding and non-coding polyadenylated transcripts that were reduced in transformed Mouse Embryonic Fibroblasts (MEFs)...
2018: PloS One
https://www.readbyqxmd.com/read/29786748/protective-effects-of-dehydrocostuslactone-on-rat-hippocampal-slice-injury-induced-by-oxygen%C3%A2-glucose-deprivation-reoxygenation
#19
Qipeng Zhao, Ailing Chen, Xiaobo Wang, Zhuanzhuan Zhang, Yunsheng Zhao, Yu Huang, Shuanglai Ren, Yafei Zhu
The present study aimed to investigate the protective effects of dehydrocostuslactone (DHL) against rat hippocampal slice injury caused by oxygen‑glucose deprivation/reoxygenation (OGD/R). Rat hippocampal slice injury was induced by OGD/R in vitro, and the degree of injury was evaluated through a lactate dehydrogenase (LDH) assay and 2,3,5‑triphenyltetrazolium chloride (TTC) staining. The protein expression levels of B‑cell lymphoma-2 (Bcl‑2), Bcl‑2‑associated X protein (Bax), cytochrome c (cyt‑c), apoptotic protease activating factor 1 (apaf‑1), caspase‑9, caspase‑7, caspase‑3, sequestosome 1 (SQSTM1) and microtubule‑associated protein 1 light chain 3 (LC3) were analyzed through western blot analysis...
May 17, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29786576/the-histological-and-electron-microscopic-study-of-the-parotid-salivary-gland-in-dehydrated-rats-of-different-ages
#20
Denys P Biletskyy, Oleg A Ustiansky, Olena S Maksymova, Pavel A Moskalenko, Alexey A Tymoshenko, Anna S Degtyarenko, Viktoriia Yu Harbuzova, Yevhen I Dubovyk, Andrii P Voznyi, Gennadii F Tkach
OBJECTIVE: Introduction: Water-salt metabolism disorders is one of the main factor of salivary gland pathology development. The aim: To study the morphological structure of the parotid salivary gland of young, mature and old rats at micro- and ultrastructural levels under water deprivation. PATIENTS AND METHODS: Materials and methods: The experiment was carried out on thirty six laboratory male rats of different ages (young, mature and old). The rats of the control group received normal volume of drinking water...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
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