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https://www.readbyqxmd.com/read/28811779/effect-of-exercise-and-morphine-on-psychological-and-physical-dependencies-bdnf-and-trkb-gene-expression-in-rat-s-hippocampus
#1
Mojtaba Naghshvarian, Mohammad-Reza Zarrindast, Shahram Ejtemaei Mehr, Mohammad Mehdi Ommati, Seyedeh Fatemeh Sajjadi
OBJECTIVES: To compare the effect of exercise and morphine on abstinence syndrome and hippocampal gene expression in rat model. METHODS: Thirty adult male rats were exposed to voluntary wheel exercise (low, medium, high) for 28 days. The subjects entered Conditioned Place Preference (CPP) apparatus and experienced morphine (low, medium, high) CPP and followed by naloxone test. Correlation between exercise level, morphine injection, concurrent morphine administration and exercise with morphine CPP, BDNF and TrkB genes was determined...
May 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28808780/non-cns-pathogenic-origin-of-parkinson-s-disease
#2
Humdoon Choudhry, Lawrence C Perlmuter
The gut with its variety of microbiota may serve as an etiological origin of diseases. Gut microbes may also play a role in the pathogenesis of diseases beyond their simple nutritional maintenance and support. For example, gut protein aggregation, possibly aided by microbes as well as nasal influences, might be linked to disease that may move to the brain through the vagus nerve. To this end, Braak has offered a "dual-hit" hypothesis that proposes a novel etiology for Parkinson's disease (PD). The hypothesis places the initial origin of the disease in the nose and the gastrointestinal tract (GI) after infection by an unknown pathogen that could aggregate in the gut and then eventually spread to the brain via the autonomic plexuses...
August 14, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28806762/a-becn1-mutation-mediates-hyperactive-autophagic-sequestration-of-amyloid-oligomers-and-improved-cognition-in-alzheimer-s-disease
#3
Altea Rocchi, Soh Yamamoto, Tabitha Ting, Yuying Fan, Katherine Sadleir, Yigang Wang, Weiran Zhang, Sui Huang, Beth Levine, Robert Vassar, Congcong He
Impairment of the autophagy pathway has been observed during the pathogenesis of Alzheimer's disease (AD), a neurodegenerative disorder characterized by abnormal deposition of extracellular and intracellular amyloid β (Aβ) peptides. Yet the role of autophagy in Aβ production and AD progression is complex. To study whether increased basal autophagy plays a beneficial role in Aβ clearance and cognitive improvement, we developed a novel genetic model to hyperactivate autophagy in vivo. We found that knock-in of a point mutation F121A in the essential autophagy gene Beclin 1/Becn1 in mice significantly reduces the interaction of BECN1 with its inhibitor BCL2, and thus leads to constitutively active autophagy even under non-autophagy-inducing conditions in multiple tissues, including brain...
August 14, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28806713/activity-groups-for-persons-with-dementia-personal-predictors-of-participation-engagement-and-mood
#4
Jiska Cohen-Mansfield
This study examined the relationship between personal characteristics and attendance, engagement, sleep, and mood outcomes of persons with dementia participating in group activities. The purpose of this study is to examine which persons with dementia benefit most from group interventions. Sixty-nine persons with dementia were observed by research and therapeutic recreation staff during 10 types of group activities (reading aloud with discussion, choral-singing, baking, creative storytelling, brain games, active games, exercise, reminiscence poetry, holiday newsletter, and holiday discussions) on multiple outcomes (attendance duration, sleep, engagement, active participation, attitude, and positive mood)...
July 25, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28801819/treadmill-exercise-prevents-increase-of-neuroinflammation-markers-involved-in-the-dopaminergic-damage-of-the-6-ohda-parkinson-s-disease-model
#5
Caroline Cristiano Real, Priscila Crespo Garcia, Luiz R G Britto
Parkinson's disease (PD) involves loss of dopaminergic neurons in the substantia nigra (SN), which can be correlated to neuroinflammatory changes with the aging of the nervous system. On the other hand, exercise can reduce the deleterious effects promoted by age, but the mechanism involved is still unclear. This study investigated the preventive exercise-induced changes on neuroinflammatory processes in a rat model of PD induced by unilateral striatal injections of 6-hydroxydopamine (6-OHDA). Adult male Wistar rats were divided into two groups: (1) sedentary (SED) or (2) exercised (EX), animals that did treadmill exercise three times per week, every other day, for 4 weeks prior to 6-OHDA or saline injection...
August 11, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28800410/incident-risk-and-progression-of-cerebral-microbleeds-in-healthy-adults-a-multi-occasion-longitudinal-study
#6
Ana M Daugherty, Naftali Raz
Decline in cerebrovascular health complicates brain aging, and development of cerebral microbleeds (CMBs) is one of its prominent indicators. In a large sample of healthy adults (N = 251, age 18-78 years at baseline, 70% women), the contributions of chronological age and vascular health indicators to the risk of developing a CMB, as well as the change in CMB size and iron content, were examined in a prospective 8-year longitudinal study using susceptibility weighted imaging. Twenty-six persons (10.4%), most of whom were 40 years of age or older, had at least 1 CMB during the study...
July 18, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28800081/autonomic-dysfunction-after-mild-traumatic-brain-injury
#7
Dmitry Esterov, Brian D Greenwald
A mild traumatic brain injury (mTBI) is a complex pathophysiologic process that has a systemic effect on the body aside from solely an impairment in cognitive function. Dysfunction of the autonomic nervous system (ANS) has been found to induce abnormalities in organ systems throughout the body, and may contribute to cardiovascular dysregulation and increased mortality. Autonomic dysfunction, also known as dysautonomia, has been studied in moderate and severe TBI, and has emerged as a major contributing factor in the symptomatology in mTBI as well...
August 11, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28782695/analgesics-and-sport-performance-beyond-the-pain-modulating-effects
#8
REVIEW
Darias Holgado, James Hopker, Daniel Sanabria, Mikel Zabala
Analgesics are widely used in sport to treat pain and inflammation associated with injury. However, there is growing evidence that some athletes might be taking these substances in an attempt to enhance performance. While the pharmacological action of analgesics and their use in treating pain with and without anti-inflammatory effect is well established, their effect on sport performance is debated. The aim of this review was to evaluate the evidence of whether analgesics are capable of enhancing exercise performance, and if so, to what extent...
August 3, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28781846/excessive-homozygosity-identified-by-chromosomal-microarray-at-a-known-gcdh-mutation-locus-correlates-with-brain-mri-abnormalities-in-an-infant-with-glutaric-aciduria
#9
Abdul Ali Peer-Zada, Ali M Al-Asmari
Herein, we report a conceptually novel clinical case highlighting the diagnostic implications of excessive homozygosity and its correlation with brain MRI abnormalities in an infant with GA1. The case also points a need for an extra amount of caution to be exercised when evaluating patients with "negative exomes."
August 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28780912/exercise-during-pregnancy-and-its-impact-on-mothers-and-offspring-in-humans-and-mice
#10
N Ferrari, I Bae-Gartz, C Bauer, R Janoschek, I Koxholt, E Mahabir, S Appel, M A Alejandre Alcazar, N Grossmann, C Vohlen, K Brockmeier, J Dötsch, E Hucklenbruch-Rother, C Graf
Exercise during pregnancy has beneficial effects on maternal and offspring's health in humans and mice. The underlying mechanisms remain unclear. This comparative study aimed to determine the long-term effects of an exercise program on metabolism, weight gain, body composition and changes in hormones [insulin, leptin, brain-derived neurotrophic factor (BDNF)]. Pregnant women (n=34) and mouse dams (n=44) were subjected to an exercise program compared with matched controls (period I). Follow-up in the offspring was performed over 6 months in humans, corresponding to postnatal day (P) 21 in mice (period II)...
August 7, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28780602/executive-function-after-exhaustive-exercise
#11
Mizuki Sudo, Takaaki Komiyama, Ryo Aoyagi, Toshiya Nagamatsu, Yasuki Higaki, Soichi Ando
PURPOSE: Findings concerning the effects of exhaustive exercise on cognitive function are somewhat equivocal. The purpose of this study was to identify physiological factors that determine executive function after exhaustive exercise. METHODS: Thirty-two participants completed the cognitive tasks before and after an incremental exercise until exhaustion (exercise group: N = 18) or resting period (control group N = 14). The cognitive task was a combination of a Spatial Delayed-Response (Spatial DR) task and a Go/No-Go task, which requires executive function...
August 5, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28779908/differential-effects-of-voluntary-treadmill-exercise-and-caloric-restriction-on-tau-pathogenesis-in-a-mouse-model-of-alzheimer-s-disease-like-tau-pathology-fed-with-western-diet
#12
Maud Gratuze, Jacinthe Julien, Françoise Morin, André Marette, Emmanuel Planel
BACKGROUND: Tau is a microtubule-associated protein that becomes pathological when it undergoes hyperphosphorylation and aggregation as seen in Alzheimer's disease (AD). AD is mostly sporadic, with environmental, biological and/or genetic risks factors, interacting together to promote the disease. In the past decade, reports have suggested that obesity in midlife could be one of these risk factors. On the other hand, caloric restriction and physical exercise have been reported to reduce the incidence and outcome of obesity as well as AD...
August 3, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28777696/exercise-in-adulthood-after-irradiation-of-the-juvenile-brain-ameliorates-long-term-depletion-of-oligodendroglial-cells
#13
Cecilia Bull, Christiana Cooper, Veronica Lindahl, Sylvia Fitting, Anders I Persson, Rita Grandér, Ann-Marie Alborn, Thomas Björk-Eriksson, H Georg Kuhn, Klas Blomgren
Cranial radiation severely affects brain health and function, including glial cell production and myelination. Recent studies indicate that voluntary exercise has beneficial effects on oligodendrogenesis and myelination. Here, we hypothesized that voluntary running would increase oligodendrocyte numbers in the corpus callosum after irradiation of the juvenile mouse brain. The brains of C57Bl/6J male mice were 6 Gy irradiated on postnatal day 9 during the main gliogenic developmental phase, resulting in a loss of oligodendrocyte precursor cells...
August 4, 2017: Radiation Research
https://www.readbyqxmd.com/read/28777176/circadian-rhythm-sleep-wake-disorders
#14
Milena Pavlova
PURPOSE OF REVIEW: The endogenous circadian rhythms are one of the cardinal processes that control sleep. They are self-sustaining biological rhythms with a periodicity of approximately 24 hours that may be entrained by external zeitgebers (German for time givers), such as light, exercise, and meal times. This article discusses the physiology of the circadian rhythms, their relationship to neurologic disease, and the presentation and treatment of circadian rhythm sleep-wake disorders...
August 2017: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/28775065/effect-of-hypoxia-and-hyperoxia-on-exercise-performance-in-healthy-individuals-and-in-patients-with-pulmonary-hypertension-a-systematic-review
#15
Silvia Ulrich, Simon Raphael Schneider, Konrad E Bloch
Exercise performance is determined by oxygen supply to working muscles and vital organs. In healthy individuals, exercise performance is limited in the hypoxic environment at altitude, when oxygen delivery is diminished due to the reduced alveolar and arterial oxygen partial pressures. In patients with pulmonary hypertension, exercise performance is already reduced near sea level due to impairments of the pulmonary circulation and gas exchange and, presumably, these limitations are more pronounced at altitude...
August 3, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28765271/sirt6-regulates-metabolic-homeostasis-in-skeletal-muscle-through-activation-of-ampk
#16
Xiaona Cui, Lu Yao, Xiaoying Yang, Yong Gao, Fude Fang, Jun Zhang, Qinghua Wang, Yongsheng Chang
Due to the mass and functions in metabolism, skeletal muscle is one of major organs regulating whole-body metabolic homeostasis. SIRT6, a histone deacetylase, has been shown to regulate metabolism in liver and brain, however, its specific role in skeletal muscle is undetermined. In the present study we explored physiological function of SIRT6 in muscle. We generated a muscle-specific SIRT6 knockout mouse model. The mice with SIRT6 deficiency in muscle displayed impaired glucose homeostasis and insulin sensitivity, attenuated whole-body energy expenditure and weakened exercise performance...
August 1, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28764939/exercise-related-cognitive-effects-on-sensory-motor-control-in-athletes-and-drummers-compared-to-non-athletes-and-other-musicians
#17
V Bianco, M Berchicci, R L Perri, F Quinzi, F Di Russo
Both playing a musical instrument and playing sport produce brain adaptations that might affect sensory-motor functions. While the benefits of sport practice have traditionally been attributed to aerobic fitness, it is still unknown whether playing an instrument might induce similar brain adaptations, or if a specific musical instrument like drums might be associated to specific benefits because of its high energy expenditure. Since the aerobic costs of playing drums was estimated to be comparable to those of average sport activities, we hypothesized that these two groups might show both behavioral and neurocognitive similarities...
July 29, 2017: Neuroscience
https://www.readbyqxmd.com/read/28762893/overlapping-microrna-expression-in-saliva-and-cerebrospinal-fluid-accurately-identifies-pediatric-traumatic-brain-injury
#18
Steven Daniel Hicks, Jeremiah Johnson, Molly C Carney, Harry Bramley, Robert P Olympia, Andrea C Loeffert, Neal J Thomas
Objectives To assess the accuracy and physiologic relevance of circulating microRNA (miRNA) as a biomarker of pediatric concussion, we compared changes in salivary miRNA and cerebrospinal fluid (CSF) miRNA following childhood traumatic brain injury (TBI). Study Design A case-cohort design was used to compare longitudinal miRNA concentrations in CSF of seven children with severe TBI against three controls without TBI. The miRNAs "altered" in CSF were interrogated in saliva of 60 children with mild TBI and compared with 18 age- and gender- matched controls...
August 1, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28757245/long-term-voluntary-exercise-prevents-post-weaning-social-isolation-induced-cognitive-impairment-in-rats
#19
Nilsel Okudan, Muaz Belviranlı
This study aimed to determine the effect of exercise on locomotion, anxiety-related behavior, learning, and memory in socially isolated post-weaning rats, as well as the correlation between exercise and the concentration of brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) in the hippocampus. Rats were randomly assigned to three groups: the control group; the social isolation group; the social isolation plus exercise (SIE) group. Social isolation conditions, with or without exercise were maintained for 90d, and then multiple behavioral tests, including the open-field test, elevated plus maze test, and Morris water maze (MWM) test were administered...
July 28, 2017: Neuroscience
https://www.readbyqxmd.com/read/28757160/mitochondrial-impairments-contribute-to-spatial-learning-and-memory-dysfunction-induced-by-chronic-tramadol-administration-in-rat-protective-effect-of-physical-exercise
#20
Hajar Mehdizadeh, Jalal Pourahmad, Ghorban Taghizadeh, Nasim Vousooghi, Ali Yoonessi, Parvaneh Naserzadeh, Ladan Behzadfar, Mohammad Reza Rouini, Mohammad Sharifzadeh
Despite the worldwide use of tramadol, few studies have been conducted about its effects on memory and mitochondrial function, and controversial results have been reported. Recently, there has been an increasing interest in physical exercise as a protective approach to neuronal and cognitive impairments. Therefore, the aim of this study was to investigate the effects of physical exercise on spatial learning and memory and brain mitochondrial function in tramadol-treated rats. After completion of 2-week (short-term) and 4-week (long-term) treadmill exercise regimens, male Wistar rats received tramadol (20, 40, 80mg/kg/day) intraperitoneally for 30days...
July 27, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
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