keyword
MENU ▼
Read by QxMD icon Read
search

Disruptive behavior*

keyword
https://www.readbyqxmd.com/read/28426969/chemogenetic-interrogation-of-a-brain-wide-fear-memory-network-in-mice
#1
Gisella Vetere, Justin W Kenney, Lina M Tran, Frances Xia, Patrick E Steadman, John Parkinson, Sheena A Josselyn, Paul W Frankland
Behavior depends on coordinated activity across multiple brain regions. Within such networks, highly connected hub regions are assumed to disproportionately influence behavioral output, although this hypothesis has not been systematically evaluated. Previously, by mapping brain-wide expression of the activity-regulated gene c-fos, we identified a network of brain regions co-activated by fear memory. To test the hypothesis that hub regions are more important for network function, here, we simulated node deletion in silico in this behaviorally defined functional network...
April 19, 2017: Neuron
https://www.readbyqxmd.com/read/28425940/circadian-clock-cell-division-and-cancer-from-molecules-to-organism
#2
REVIEW
Anton Shostak
As a response to environmental changes driven by the Earth's axial rotation, most organisms evolved an internal biological timer-the so called circadian clock-which regulates physiology and behavior in a rhythmic fashion. Emerging evidence suggests an intimate interplay between the circadian clock and another fundamental rhythmic process, the cell cycle. However, the precise mechanisms of this connection are not fully understood. Disruption of circadian rhythms has a profound impact on cell division and cancer development and, vice versa, malignant transformation causes disturbances of the circadian clock...
April 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28422371/effects-of-m1-and-m4-activation-on-excitatory-synaptic-transmission-in-ca1
#3
Catherine Thorn, Michael Popiolek, Eda Stark, Jeremy Edgerton
Hippocampal networks are particularly susceptible to dysfunction in many neurodegenerative diseases and neuropsychiatric disorders including Alzheimer's disease, Lewy body dementia, and schizophrenia. CA1, a major output region of the hippocampus, receives glutamatergic input from both hippocampal CA3 and entorhinal cortex, via the Schaffer collateral (SC) and temporoammonic (TA) pathways, respectively. SC and TA inputs to CA1 are thought to be differentially involved in the retrieval of previously stored memories versus the encoding of novel information, and switching between these two crucial hippocampal functions is thought to critically depend on acetylcholine (ACh) acting at muscarinic receptors...
April 19, 2017: Hippocampus
https://www.readbyqxmd.com/read/28421851/global-and-multi-focal-changes-in-cerebral-blood-flow-during-subthalamic-nucleus-stimulation-in-parkinson-s-disease
#4
Asim M Mubeen, Babak Ardekani, Michele Tagliati, Ron Alterman, Vijay Dhawan, David Eidelberg, John J Sidtis
Electrical stimulation of subthalamic nuclei (STN) is a widely used therapy in Parkinson's disease (PD). While deep brain stimulation (DBS) of the STN alters the neurophysiological activity in basal ganglia, the therapeutic mechanism has not been established. A positron emission tomography (PET) study of cerebral blood flow (CBF) during speech production in PD subjects treated with STN-DBS found significant increases in global (whole-brain) CBF.(1) That study utilized a series of whole-slice regions of interest to obtain global CBF values...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28420965/dopamine-a-modulator-of-circadian-rhythms-in-the-central-nervous-system
#5
REVIEW
Kirill S Korshunov, Laura J Blakemore, Paul Q Trombley
Circadian rhythms are daily rhythms that regulate many biological processes - from gene transcription to behavior - and a disruption of these rhythms can lead to a myriad of health risks. Circadian rhythms are entrained by light, and their 24-h oscillation is maintained by a core molecular feedback loop composed of canonical circadian ("clock") genes and proteins. Different modulators help to maintain the proper rhythmicity of these genes and proteins, and one emerging modulator is dopamine. Dopamine has been shown to have circadian-like activities in the retina, olfactory bulb, striatum, midbrain, and hypothalamus, where it regulates, and is regulated by, clock genes in some of these areas...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28419598/biological-traits-rather-than-environment-shape-detection-curves-of-large-vertebrates-in-neotropical-rainforests
#6
Thomas Denis, Cécile Richard-Hansen, Olivier Brunaux, Marie-Pierre Etienne, Stéphane Guitet, Bruno Hérault
Line transect surveys are widely used in neotropical rainforests to estimate the population abundance of medium- and large-sized vertebrates. The use of indices such as Encounter Rate has been criticized because the probability of animal detection may fluctuate due to the heterogeneity of environmental conditions among sites. In addition, the morphological and behavioral characteristics (biological traits) of species affect their detectability. In this study, we compared the extent to which environmental conditions and species' biological traits bias abundance estimates in terra firme rainforests in French Guiana...
April 17, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28418941/prenatal-fluoxetine-modifies-the-behavioral-and-hormonal-responses-to-stress-in-male-mice-role-for-glucocorticoid-insensitivity
#7
Ronit Avitsur
Women with major depressive disorder during pregnancy often use selective serotonin reuptake inhibitors (SSRIs) antidepressants. These drugs readily cross the placental barrier and impact the developing fetal brain. Recently, we reported that prenatal fluoxetine (FLX), an SSRI antidepressant drug, altered corticosterone and behavioral responses to stress in female mouse offspring. The present study assessed the effects of prenatal FLX on these responses in males. The results showed that prenatal FLX significantly augmented the corticosterone response to acute stress in young prepubescent mice...
April 17, 2017: Behavioural Pharmacology
https://www.readbyqxmd.com/read/28415271/mean-cluster-approach-indicates-cell-sorting-time-scales-are-determined-by-collective-dynamics
#8
Carine P Beatrici, Rita M C de Almeida, Leonardo G Brunnet
Cell migration is essential to cell segregation, playing a central role in tissue formation, wound healing, and tumor evolution. Considering random mixtures of two cell types, it is still not clear which cell characteristics define clustering time scales. The mass of diffusing clusters merging with one another is expected to grow as t^{d/d+2} when the diffusion constant scales with the inverse of the cluster mass. Cell segregation experiments deviate from that behavior. Explanations for that could arise from specific microscopic mechanisms or from collective effects, typical of active matter...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28414494/discrimination-daily-stress-sleep-and-mexican-origin-adolescents-internalizing-symptoms
#9
Katharine H Zeiders
OBJECTIVE: Using diary and longitudinal data, the current study examined the relations between Mexican-origin youths' ethnic discrimination, daily sleep and stress processes, and internalizing symptoms. METHOD: Adolescents (N = 113; 49.6% female, Mage = 15.73 years) participated in an initial in-home interview and reported on ethnic discrimination and internalizing symptoms. They then completed a 3-day diary study and reported on their daily stress and sleep behaviors (i...
April 17, 2017: Cultural Diversity & Ethnic Minority Psychology
https://www.readbyqxmd.com/read/28414301/striatopallidal-dysfunction-underlies-repetitive-behavior-in-shank3-deficient-model-of-autism
#10
Wenting Wang, Chenchen Li, Qian Chen, Marie-Sophie van der Goes, James Hawrot, Annie Y Yao, Xian Gao, Congyi Lu, Ying Zang, Qiangge Zhang, Katherine Lyman, Dongqing Wang, Baolin Guo, Shengxi Wu, Charles R Gerfen, Zhanyan Fu, Guoping Feng
The postsynaptic scaffolding protein SH3 and multiple ankyrin repeat domains 3 (SHANK3) is critical for the development and function of glutamatergic synapses. Disruption of the SHANK3-encoding gene has been strongly implicated as a monogenic cause of autism, and Shank3 mutant mice show repetitive grooming and social interaction deficits. Although basal ganglia dysfunction has been proposed to underlie repetitive behaviors, few studies have provided direct evidence to support this notion and the exact cellular mechanisms remain largely unknown...
April 17, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28413707/disrupting-dorsolateral-prefrontal-cortex-by-rtms-reduces-the-p300-based-marker-of-deception
#11
Inga Karton, Talis Bachmann
OBJECTIVE: Quite many studies have revealed certain brain-process signatures indicative of subject's deceptive behavior. These signatures are neural correlates of deception. However, much less is known about whether these signatures can be modified by noninvasive brain stimulation techniques representing methods of causal intervention of brain processes and the corresponding behavior. Our purpose was to explore whether such methods have an effect on these signatures. METHODS: It is well known that electroencephalographic event-related potential component, P300, is sensitive to perception of critical items in a concealed information test, one of the central methods in deception studies...
April 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28413642/ginsenoside-rd-as-a-potential-neuroprotective-agent-prevents-trimethyltin-injury
#12
Jingang Hou, Jianjie Xue, Mira Lee, Changkeun Sung
Trimethyltin (TMT) is a potent neurotoxicant that affects various regions within the central nervous system, including the neocortex, cerebellum, and hippocampus. In the present study, ginsenoside Rd was investigated as a candidate neuroprotective agent in a primary hippocampal neuron culture and mouse models. TMT induced neurotoxicity in a seven-day primary hippocampal neuron culture in a dose-dependent manner (2.5-10 µM). However, pre-treatment with 20 µg/ml ginsenoside Rd for 24 h reversed the toxic action...
April 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28413441/prevalence-and-associated-factors-of-attention-deficit-hyperactivity-disorder-adhd-among-ugandan-children-a-cross-sectional-study
#13
Joan Wamulugwa, Angelina Kakooza, Sabrina Bakeera Kitaka, Joyce Nalugya, Mark Kaddumukasa, Shirley Moore, Martha Sajatovic, Elly Katabira
BACKGROUND: Attention deficit hyperactivity disorder (ADHD) is a common neuropsychiatric disorder among the children. The burden of ADHD or its associated factors in Uganda are not known. The objective of this study was to determine the prevalence and the associated factors of ADHD among children attending the neurology and psychiatry clinics at Mulago National Referral Hospital. METHODS: Using the disruptive behavior scale (45 items), we investigated the presence of ADHD symptoms among children attending Mulago Hospital...
2017: Child and Adolescent Psychiatry and Mental Health
https://www.readbyqxmd.com/read/28412891/service-receipt-and-mental-disorders-in-child-welfare-and-mental-health-systems-in-los-angeles-county
#14
Amy S He, Dorian E Traube, Kim C Brimhall, Caroline Lim, Greg Lecklitner, Adrienne Olson
OBJECTIVE: Use of administrative data from child welfare (CW) and mental health systems in Los Angeles County provided a unique opportunity to more closely examine mental health needs of children dually served by these systems. This study examined the presence of mental disorders and correlates of receipt of mental health services by diagnostic classification in this population. METHODS: Data were obtained for 3,191 children receiving services from Los Angeles County's Department of Children and Family Services and Department of Mental Health (DMH) between July 2011 and July 2012...
April 17, 2017: Psychiatric Services: a Journal of the American Psychiatric Association
https://www.readbyqxmd.com/read/28412561/metastatic-human-breast-cancer-to-the-spine-produces-mechanical-hyperalgesia-and-gait-deficits-in-rodents
#15
Rachel Sarabia-Estrada, Alejandro Ruiz-Valls, Hugo Guerrero-Cazares, Ana M Ampuero, Ismael Jimenez-Estrada, Samantha De Silva, Lydia J Bernhardt, C Rory Goodwin, A Karim Ahmed, Yuxin Li, Neil A Phillips, Ziya L Gokaslan, Alfredo Quiñones-Hinojosa, Daniel M Sciubba
BACKGROUND CONTEXT: Metastases to the spine are a common source of severe pain in cancer patients. The secondary effects of spinal metastases include pain, bone fractures, hypercalcemia, and neurological deficits. As the disease progresses, pain severity can increase until it becomes refractory to medical treatments and leads to a decreased quality of life for patients. A key obstacle in the study of pain-induced spinal cancer is the lack of reliable and reproducible spine cancer animal models...
April 13, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28411411/maternal-hypothyroxinaemia-in-early-pregnancy-and-problem-behavior-in-5-year-old-offspring
#16
Maurits H W Oostenbroek, Remco H J Kersten, Benjamin Tros, Anton E Kunst, Tanja G M Vrijkotte, Martijn J J Finken
INTRODUCTION: There is evidence, though not consistent, that offspring born to mothers with subtle decreases in thyroid function early in their pregnancies may be at risk of cognitive impairments and attention problems. However, other types of problem behavior have not been addressed thus far. We tested whether maternal thyroid function in early pregnancy is associated with several types of problem behavior in offspring at age 5-6 years. METHODS: This was a longitudinal study that included the data of 2000 mother-child pairs from the Amsterdam Born Children and their Development study...
March 25, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28411272/disconnection-of-the-perirhinal-and-postrhinal-cortices-impairs-recognition-of-objects-in-context-but-not-contextual-fear-conditioning
#17
Victoria R Heimer-McGinn, D L Poeta, K Aghi, M Udawatta, R D Burwell
The perirhinal cortex (PER) is known to process object information, whereas the rodent postrhinal cortex (POR), homolog to the parahippocampal cortex (PHC) in primates, is thought to process spatial information. A number of studies, however, provide evidence that both areas are involved in processing contextual information. In this study, we tested the hypothesis that the rat POR relies on object information received from the PER to form complex representations of context. Using three fear conditioning paradigms (signaled, unsignaled, and renewal) and two context-guided object recognition tasks (with 3-dimensional and 2-dimensional objects), we examined the effects of crossed excitotoxic lesions to the POR and the contralateral PER...
April 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28411222/effect-of-antimicrobial-and-physical-treatments-on-growth-of-multispecies-staphylococcal-biofilms
#18
Elizabeth J Stewart, David E Payne, Tianhui Maria Ma, J Scott VanEpps, Blaise R Boles, John G Younger, Michael J Solomon
The prevalence and structure of Staphylococcus aureus and Staphylococcus epidermidis within multispecies biofilms was found to depend sensitively on physical environment and antibiotic dosage. Although these species commonly infect similar sites, such as orthopedic implants, little is known about their behavior in multispecies communities, particularly in response to treatment. This research establishes that S. aureus is much more prevalent than S. epidermidis when simultaneously seeded and grown in unstressed conditions (pH = 7, 37°C) in both laboratory and clinical strains...
April 14, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28408414/posterior-parietal-cortex-guides-visual-decisions-in-rats
#19
Angela M Licata, Matthew T Kaufman, David Raposo, Michael B Ryan, John P Sheppard, Anne K Churchland
Neurons in putative decision-making structures can reflect both sensory and decision signals, making their causal role in decisions unclear. Here, we tested whether rat posterior parietal cortex (PPC) is causal for processing visual sensory signals or instead for accumulating evidence for decision alternatives. We optogenetically disrupted PPC activity during decision-making and compared effects on decisions guided by auditory vs. visual evidence. Deficits were largely restricted to visual decisions. To further test for visual dominance in PPC, we evaluated electrophysiological responses following individual sensory events and observed much larger response modulation following visual stimuli than auditory stimuli...
April 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28408299/ovarian-hormones-modify-anxiety-behavior-and-glucocorticoid-receptors-after-chronic-social-isolation-stress
#20
Dinah L Ramos-Ortolaza, Raura J Doreste-Mendez, John K Alvarado-Torres, Annelyn Torres-Reveron
Chronic social isolation could lead to a disruption in the Hypothalamic-Pituitary-Adrenal (HPA) axis, resulting in anxiety and depressive-like behaviors but cycling estrogens could modify these behaviors. The aim of this study was to determine if changes in ovarian hormones during the normal cycle could interact with social isolation to alter anxiety and depressive-like behaviors. In parallel, we examined the expression of glucocorticoid receptor (GR) and synaptic vesicle protein synaptophysin in the hippocampus and hypothalamus of Sprague Dawley normal cycling female rats...
April 10, 2017: Behavioural Brain Research
keyword
keyword
39956
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"