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https://www.readbyqxmd.com/read/28643087/antioxidant-and-antiapoptotic-actions-of-selegiline-protect-against-3-np-induced-neurotoxicity-in-rats
#1
Sara A Wahdan, Mariane G Tadros, Amani E Khalifa
The present study was designed to investigate the neuroprotective effect of selegiline on 3-nitropropionic acid (3-NP)-induced neurotoxicity. Selegiline was intraperitoneally injected at doses 2.5, 5, and 10 mg/kg, 3 days prior to and continued daily, 30 min before 3-NP administration. 3-NP (20 mg/kg, i.p.) was administered for four consecutive days. 3-NP-treated rats exhibited PPI deficits, locomotor hypoactivity, increased striatal and cortical lipid peroxidation, and reduced respective glutathione (GSH) levels as well as catalase and superoxide dismutase (SOD) activities...
June 23, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28641131/children-s-brain-activation-during-risky-decision-making-a-contributor-to-substance-problems
#2
Thomas J Crowley, Manish S Dalwani, Joseph T Sakai, Kristen M Raymond, Shannon K McWilliams, Marie T Banich, Susan K Mikulich-Gilbertson
OBJECTIVE: Among young children excessive externalizing behaviors often predict adolescent conduct and substance use disorders. Adolescents with those disorders show aberrant brain function when choosing between risky or cautious options. We therefore asked whether similarly aberrant brain function during risky decision-making accompanies excessive externalizing behaviors among children, hypothesizing an association between externalizing severity and regional intensity of brain activation during risky decision-making...
June 4, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28623180/behavioral-screening-of-the-lopac-1280-library-in-zebrafish-embryos
#3
Sara M Vliet, Trina C Ho, David C Volz
Spontaneous activity represents an early, primitive form of motor activity within zebrafish embryos, providing a potential readout for identification of neuroactive compounds. However, despite use as an endpoint in chemical screens around the world, the predictive power and limitations of assays relying on spontaneous activity remain unclear. Using an improved high-content screening assay that increased throughput from 384 to 3072 wells per week, we screened a well-characterized library of 1280 pharmacologically active compounds (LOPAC(1280)) - 612 of which target neurotransmission - to identify which targets are detected using spontaneous activity as a readout...
June 13, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28609390/androgens-in-postmenopausal-women-a-review
#4
Jan L Shifren, Susan R Davis
There is significant interest in the use of androgen therapy for postmenopausal women. This review provides background on endogenous androgens in women, describes factors that affect circulating androgen concentrations, and examines the relationship between low levels of androgens and sexual problems. Possible effects of androgens in postmenopausal women beyond sexual function also are discussed. Clinical trials of androgen therapy for the treatment of hypoactive sexual desire disorder are reviewed, with a discussion of potential risks...
June 12, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28608926/the-pharmacodynamic-effects-of-combined-administration-of-flibanserin-and-alcohol
#5
D M Stevens, J M Weems, L Brown, K A Barbour, S M Stahl
WHAT IS KNOWN AND OBJECTIVE: Flibanserin is a serotonin 5-HT1A agonist and 5-HT2A antagonist approved for the treatment of acquired, generalized hypoactive sexual desire disorder (HSDD) in premenopausal women. Because of the increased risk of hypotension- and syncope-related adverse events (AEs) observed with coadministration of flibanserin and alcohol, alcohol use is contraindicated. To provide a more comprehensive understanding of the interaction between flibanserin and alcohol, the results of a dedicated phase 1 alcohol-interaction study and a pooled analysis of phase 3 studies of premenopausal women with HSDD are presented...
June 13, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28607756/heart-rate-variability-is-differentially-altered-in-multiple-sclerosis-implications-for-acute-worsening-and-progressive-disability
#6
Valeria Studer, Camilla Rocchi, Caterina Motta, Benedetta Lauretti, Jacopo Perugini, Laura Brambilla, Lorena Pareja-Gutierrez, Giorgia Camera, Francesca Romana Barbieri, Girolama A Marfia, Diego Centonze, Silvia Rossi
BACKGROUND: Sympathovagal imbalance has been associated with poor prognosis in chronic diseases, but there is conflicting evidence in multiple sclerosis. OBJECTIVES: The objective of this study was to investigate the autonomic nervous system dysfunction correlation with inflammation and progression in multiple sclerosis. METHODS: Heart rate variability was analysed in 120 multiple sclerosis patients and 60 healthy controls during supine rest and head-up tilt test; the normalised units of low frequency and high frequency power were considered to assess sympathetic and vagal components, respectively...
April 2017: Multiple Sclerosis Journal—Experimental, Translational and Clinical
https://www.readbyqxmd.com/read/28583342/flibanserin-in-postmenopausal-women-with-hypoactive-sexual-desire-disorder-results-of-the-plumeria-study
#7
David J Portman, Louise Brown, James Yuan, Robert Kissling, Sheryl A Kingsberg
BACKGROUND: Hypoactive sexual desire disorder (HSDD) is a common sexual disorder in younger and older women. Flibanserin is approved for the treatment of acquired generalized HSDD in premenopausal women only. The efficacy of flibanserin for postmenopausal women with HSDD was demonstrated in the first of two North American randomized, double-blinded, placebo-controlled trials (SNOWDROP). AIM: To evaluate the safety and efficacy of flibanserin in postmenopausal women with HSDD in a second randomized, double-blinded, placebo-controlled trial (PLUMERIA)...
June 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28579352/clinical-features-associated-with-delirium-motor-subtypes-in-older-inpatients-results-of-a-multicenter-study
#8
Alessandro Morandi, Simona G Di Santo, Antonio Cherubini, Enrico Mossello, David Meagher, Andrea Mazzone, Angelo Bianchetti, Nicola Ferrara, Alberto Ferrari, Massimo Musicco, Marco Trabucchi, Giuseppe Bellelli
OBJECTIVE: To date motor subtypes of delirium have been evaluated in single-center studies with a limited examination of the relationship between predisposing factors and motor profile of delirium. We sought to report the prevalence and clinical profile of subtypes of delirium in a multicenter study. METHODS: This is a point prevalence study nested in the "Delirium Day 2015", which included 108 acute and 12 rehabilitation wards in Italy. Delirium was detected using the 4-AT and motor subtypes were measured with the Delirium Motor Subtype Scale (DMSS)...
May 4, 2017: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28577168/behavioural-effects-of-the-neonicotinoid-insecticide-thiamethoxam-on-the-predatory-insect-platynus-assimilis
#9
Ene Tooming, Enno Merivee, Anne Must, Marten-Ingmar Merivee, Ivar Sibul, Karin Nurme, Ingrid H Williams
Little information is available regarding sublethal effects of neonicotinoids on insect predators, many of which perform important roles in ecosystem functioning and biocontrol. In this study, dose-dependent sublethal effects of a dietary administered neonicotinoid insecticide thiamethoxam on two basic behaviours, locomotion and feeding, were quantified in the carabid Platynus assimilis (Coleoptera, Carabidae) using automated video-tracking and weighing of consumed food, respectively. Acute toxicity tests showed that, when orally administered, the LD50 of thiamethoxam for P...
June 2, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28575276/structural-determinants-of-apobec3b-non-catalytic-domain-for-molecular-assembly-and-catalytic-regulation
#10
Xiao Xiao, Hanjing Yang, Vagan Arutiunian, Yao Fang, Guillaume Besse, Cherie Morimoto, Brett Zirkle, Xiaojiang S Chen
The catalytic activity of human cytidine deaminase APOBEC3B (A3B) has been correlated with kataegic mutational patterns within multiple cancer types. The molecular basis of how the N-terminal non-catalytic CD1 regulates the catalytic activity and consequently, biological function of A3B remains relatively unknown. Here, we report the crystal structure of a soluble human A3B-CD1 variant and delineate several structural elements of CD1 involved in molecular assembly, nucleic acid interactions and catalytic regulation of A3B...
May 30, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28553757/motor-disturbances-in-elderly-medical-inpatients-and-their-relationship-to-delirium
#11
Dimitrios Adamis, Geraldine McCarthy, Edmond O'Mahony, David Meagher
Motor disturbances in delirious patients are common, but their relationship to cognition and severity of illness has not been studied. We examined motor subtypes in an older age inpatient population, their relationship to clinical variables including delirium, and their association with 1-year mortality in a prospective study, using the Confusion Assessment Method, Acute Physiology and Chronic Health Evaluation II, Montreal Cognitive Assessment (MoCA), Barthel Index, and Delirium Rating Scale-Revised 98 (DRS-R98)...
January 1, 2017: Journal of Geriatric Psychiatry and Neurology
https://www.readbyqxmd.com/read/28546253/hypoactive-delirium
#12
Christian Hosker, David Ward
No abstract text is available yet for this article.
May 25, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28533552/physical-activity-for-paediatric-rheumatic-diseases-standing-up-against-old-paradigms
#13
REVIEW
Bruno Gualano, Eloisa Bonfa, Rosa M R Pereira, Clovis A Silva
Over the past 50 years it has become clear that physical inactivity is associated with chronic disease risk. For several rheumatic diseases, bed rest was traditionally advocated as the best treatment, but several levels of evidence support the imminent paradigm shift from the prescription of bed rest to physical activity in individuals with paediatric rheumatic diseases, in particular juvenile systemic lupus erythematosus, juvenile idiopathic arthritis, juvenile fibromyalgia, and juvenile dermatomyositis. Increasing levels of physical activity can alleviate several symptoms experienced by patients with paediatric rheumatic diseases, such as low aerobic fitness, pain, fatigue, muscle weakness and poor health-related quality of life...
May 23, 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28529144/toxicant-induced-behavioural-aberrations-in-larval-zebrafish-are-dependent-on-minor-methodological-alterations
#14
Thomas W K Fraser, Abdolrahman Khezri, Juan G H Jusdado, Anna M Lewandowska-Sabat, Theodore Henry, Erik Ropstad
Alterations in zebrafish motility are used to identify neurotoxic compounds, but few have reported how methodology may affect results. To investigate this, we exposed embryos to bisphenol A (BPA) or tetrabromobisphenol A (TBBPA) before assessing larval motility. Embryos were maintained on a day/night cycle (DN) or in constant darkness, were reared in 96 or 24 well plates (BPA only), and behavioural tests were carried out at 96, 100, or 118 (BPA only) hours post fertilisation (hpf). We found that the prior photo-regime, larval age, and/or arena size influence behavioural outcomes in response to toxicant exposure...
July 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28526515/prenatal-lipopolysaccharide-induces-hypothalamic-dopaminergic-hypoactivity-and-autistic-like-behaviors-repetitive-self-grooming-and-stereotypies
#15
Thiago B Kirsten, Maria M Bernardi
Previous investigations by our group have shown that prenatal exposure to lipopolysaccharide (LPS), which mimics infection by gram-negative bacteria, induces social, cognitive, and communication deficits. For a complete screening of autistic-like behaviors, the objective of this study was to evaluate if our rat model also induces restricted and repetitive stereotyped behaviors. Thus, we studied the self-grooming microstructure. We also studied the neurochemistry of hypothalamus and frontal cortex, which are brain areas related to autism to better understand central mechanisms involved in our model...
May 16, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28515935/methotrexate-encephalopathy-two-cases-in-adult-cancer-patients-who-recovered-with-pathophysiologically-based-therapy
#16
Shodeinde A Coker, David A Pastel, Melissa C Davis, Elizabeth M Bengtson, Camilo E Fadul, Lionel D Lewis
BACKGROUND/OBJECTIVES: Neurotoxicity is a serious and sometimes fatal adverse effect that can occur following methotrexate treatment. We describe two adult patients with hematological malignancies with methotrexate encephalopathy who recovered with dextromethorphan therapy. RESULTS: Case 1: A 24-year-old male with acute lymphoblastic leukemia developed the acute onset of bilateral facial weakness and slurred speech after his first treatment with high-dose intravenous methotrexate...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28506826/an-x-chromosome-linked-mouse-model-ndufa1-s55a-for-systemic-partial-complex-i-deficiency-for-studying-predisposition-to-neurodegeneration-and-other-diseases
#17
Chul Kim, Prasanth Potluri, Ahmed Khalil, Daria Gaut, Meagan McManus, Shannon Compton, Douglas C Wallace, Nagendra Yadava
The respiratory chain Complex I deficiencies are the most common cause of mitochondrial diseases. Complex I biogenesis is controlled by 58 genes and at least 47 of these cause mitochondrial disease in humans. Two of these are X-chromosome linked nuclear (nDNA) genes (NDUFA1 and NDUFB11), and 7 are mitochondrial (mtDNA, MT-ND1-6, -4L) genes, which may be responsible for sex-dependent variation in the presentation of mitochondrial diseases. In this study, we describe an X-chromosome linked mouse model (Ndufa1(S55A)) for systemic partial Complex I deficiency...
May 12, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28506099/propofol-based-palliative-sedation-to-treat-antipsychotic-resistant-agitated-delirium
#18
Alfredo Covarrubias-Gómez, Maria López Collada-Estrada
Delirium is a common problem in terminally ill patients that is associated with significant distress and, hence, considered a palliative care emergency. The three subtypes of delirium are hyperactive, hypoactive, and mixed, depending on the level of psychomotor activity and arousal disturbance. When agitated delirium becomes refractory in the setting of imminent dying, the agitation may be so severe that palliative sedation (PS) is required. Palliative sedation involves the administration of sedative medications with the purpose of reducing level of consciousness for patients with refractory suffering in the setting of a terminal illness...
May 16, 2017: Journal of Pain & Palliative Care Pharmacotherapy
https://www.readbyqxmd.com/read/28499520/prevalence-and-predictors-of-low-sexual-desire-sexually-related-personal-distress-and-hypoactive-sexual-desire-dysfunction-in-a-community-based-sample-of-midlife-women
#19
Roisin Worsley, Robin J Bell, Pragya Gartoulla, Susan R Davis
BACKGROUND: Low desire is the most common sexual problem in women at midlife. Prevalence data are limited by lack of validated instruments or exclusion of un-partnered or sexually inactive women. AIM: To document the prevalence of and factors associated with low desire, sexually related personal distress, and hypoactive sexual desire dysfunction (HSDD) using validated instruments. METHODS: Cross-sectional, nationally representative, community-based sample of 2,020 Australian women 40 to 65 years old...
May 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28476615/deficits-in-spatial-learning-and-memory-in-adult-mice-following-acute-low-or-moderate-levels-of-prenatal-ethanol-exposure-during-gastrulation-or-neurulation
#20
Uta B Schambra, C Nicole Lewis, Theresa A Harrison
Debate continues on the merits of strictly limiting alcohol consumption during all of pregnancy, and whether "safe" consumption levels and/or times exist. Only a relatively few experimental studies have been conducted that limit the timing of exposure to specific events during development and the exposure level to one that might model sporadic, incidental drinking during pregnancy. In the present study, the effects of two acute gavage exposures to low and moderate levels of ethanol (peak blood ethanol concentrations (BEC) of 104 and 177mg/dl, respectively) either during gastrulation on gestational day (GD) 7 (at GD7:0h and GD7:4h) or during neurulation on GD8 (at GD8:6h and GD8:10h) on the spatial learning and memory abilities of adult mice in the radial arm maze (RAM) were examined...
May 2, 2017: Neurotoxicology and Teratology
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