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https://www.readbyqxmd.com/read/28549967/hippocampal-nicotinic-receptors-have-a-modulatory-role-for-ethanol-and-mdma-interaction-in-memory-retrieval
#1
Maryam Rostami, Ameneh Rezayof, Sakineh Alijanpour, Khadijeh Alsadat Sharifi
The aim of the current study was to examine the effect of dorsal hippocampal nicotinic acetylcholine receptors (nAChRs) activation on the functional interaction between ethanol and 3,4-methylenedioxy-N-methylamphetamine (MDMA or ecstasy) in memory retrieval. The dorsal hippocampal CA1 regions of adult male NMRI mice were bilaterally cannulated and memory retrieval was measured in a step-down type passive avoidance apparatus. Post-training or pre-test systemic administration of ethanol (1 g/kg, i.p.) induced amnesia...
May 23, 2017: Brain Research
https://www.readbyqxmd.com/read/28549449/fatal-familial-insomnia-with-abnormal-signals-on-routine-mri-a-case-report-and-literature-review
#2
Tingting Lu, Yuhang Pan, Lisheng Peng, Feng Qin, Xiaobo Sun, Zhengqi Lu, Wei Qiu
BACKGROUND: Fatal familial insomnia (FFI) is a rare autosomal dominant disease caused by the PRNP D178N/129 M mutation. Routine brain CT and MRI usually reveal non-specific features. We report a patient with FFI presenting with diffuse abnormal signals on MRI, later confirmed as combined with cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). CASE PRESENTATION: The patient was a 58-year-old female, whose main clinical manifestations were insomnia, movement disorders, autonomic hyperactivity and mental deterioration...
May 26, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28545341/interidentity-amnesia-in-dissociative-identity-disorder
#3
John Morton
INTRODUCTION: Patients diagnosed with dissociative identity disorder (DID) usually present with alternative personality states (alters) who take separate control of consciousness. Commonly, one alter will claim they have no awareness of events which took place when another alter was in control. However, some kinds of material are transferred across the alter boundary. Huntjens et al. devised an objective method of demonstrating such transfer. METHODS: In the main study, following Huntjens et al...
May 25, 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28544930/neural-oscillations-demonstrate-that-general-anesthesia-and-sedative-states-are-neurophysiologically-distinct-from-sleep
#4
REVIEW
Oluwaseun Akeju, Emery N Brown
General anesthesia is a man-made neurophysiological state comprised of unconsciousness, amnesia, analgesia, and immobility along with maintenance of physiological stability. Growing evidence suggests that anesthetic-induced neural oscillations are a primary mechanism of anesthetic action. Each anesthetic drug class produces distinct oscillatory dynamics that can be related to the circuit mechanisms of drug action. Sleep is a naturally occurring state of decreased arousal that is essential for normal health...
May 22, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28544619/design-and-synthesis-of-some-acridine-piperazine-hybrids-for-the-improvement-of-cognitive-dysfunction
#5
Anuradha Sharma, Poonam Piplani
A novel series of hybrid molecules (5a-5m) was designed, synthesized and evaluated as multifunctional cholinesterase (ChE) inhibitors against cognitive dysfunction. Heterocyclic moieties acridine and piperazine were conjugated with suitable linkers in a single scaffold and the structures of the target compounds were confirmed by IR, (1) H NMR, (13) C NMR and LC-MS analysis. The pharmacological activity of synthesized compounds was evaluated using behavioral models of amnesia viz. step down passive avoidance and elevated plus maze at a dose 0...
May 25, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28540393/computed-tomography-scans-of-the-head-for-adult-patients-with-minor-head-injury-are-clinical-decision-rules-a-necessary-evil
#6
Desmond Wei Tan, Annabelle Mei En Lim, Daniel Yuxuan Ong, Li Lee Peng, Yiong Huak Chan, Irwani Ibrahim, Win Sen Kuan
INTRODUCTION: This study aimed to evaluate compliance with and performance of the Canadian Computed Tomography Head Rule (CCHR), and its applicability in the local adult population with minor head injury. METHODS: We conducted a retrospective study of consecutive patients who presented to the adult emergency department (ED) with minor head injury over six months. Data on predictor variables indicated in the CCHR was collected and compliance with the CCHR assessed by comparing the recommendations for head computed tomography (CT) scans to its actual usage...
May 25, 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28520667/supervision-needs-following-veteran-and-service-member-moderate-to-severe-traumatic-brain-injury-a-va-tbi-model-systems-study
#7
Erin K Bailey, Risa Nakase-Richardson, Nitin Patel, Christina Dillahunt-Aspillaga, Susan A Ropacki, Angelle M Sander, Lillian Stevens, Xinyu Tang
OBJECTIVE: To characterize supervision levels across residential settings at 1 year post-TBI and explore predictors of supervision in a Veteran and Service-member population. SETTING: Five VA Polytrauma Rehabilitation Centers. PARTICIPANTS: A total of 302 individuals enrolled in the VA TBI Model Systems (TBIMS) research program. DESIGN: Prospective, longitudinal, multisite. MAIN MEASURES: Primary residence and supervision levels measured via scores on the Supervision Rating Scale...
May 17, 2017: Journal of Head Trauma Rehabilitation
https://www.readbyqxmd.com/read/28511981/role-of-cholinergic-receptors-in-memory-retrieval-depends-on-gender-and-age-of-memory
#8
Rashid Habiba, Mahboob Aamra, Ahmed Touqeer
The phenomenon of utilizing information acquired in the past to make decision and performance in present depends on memory retrieval, which is affected in retrograde amnesia. Role of cholinergic receptors in memory retrieval is not much explored. In this study we evaluated the gender specific role of cholinergic receptors, i.e. muscarinic and nicotinic receptors, in memory retrieval in young Balb/c mice. Acute (only one injection, 30minutes before test) and sub-chronic (five days) muscarinic blockade (using scopolamine=1mg/kg) before test impaired retrieval of contextual fear memory in male (31...
May 13, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28511823/dissociation-and-conversion-symptoms-in-dermatology
#9
Madhulika A Gupta, Branka Vujcic, Aditya K Gupta
Dissociation and conversion (defined as the somatic component of dissociation) can play an important mediating role in the exacerbation of the stress-reactive dermatoses (eg, psoriasis, idiopathic urticaria, atopic dermatitis), dermatoses that are exacerbated by excessive scratching (eg, lichen simplex chronicus, prurigo nodularis) and koebnerization, and the self-induced dermatoses (dermatitis artefacta, acne excoriée, skin picking disorder, trichotillomania, onychotillomania/onychophagia). Dissociative symptoms often coexist with obsessive-compulsive symptoms in the more severe cases of the self-induced dermatoses...
May 2017: Clinics in Dermatology
https://www.readbyqxmd.com/read/28506441/association-of-traumatic-brain-injury-and-alzheimer-disease-onset-a-systematic-review
#10
REVIEW
J Julien, S Joubert, M-C Ferland, L C Frenette, M M Boudreau-Duhaime, L Malo-Véronneau, E de Guise
BACKGROUND: Inconsistencies regarding the risk of developing Alzheimer disease after traumatic brain injury (TBI) remain in the literature. Indeed, why AD develops in certain TBI patients while others are unaffected is still unclear. OBJECTIVE: The aim of this study was to performed a systematic review to investigate whether certain variables related to TBI, such as TBI severity, loss of consciousness (LOC) and post-traumatic amnesia (PTA), are predictors of risk of AD in adults...
May 11, 2017: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28505998/-i-really-hope-it-comes-back-olfactory-impairment-following-traumatic-brain-injury-a-longitudinal-study
#11
Melanie Drummond, Jacinta Douglas, John Olver
BACKGROUND: Olfactory Impairment (OI) can present in up to 66% of all individuals following traumatic brain injury (TBI) and can have significant implications for everyday life. OBJECTIVE: To investigate the predictive factors, natural progression and consequences of OI in following TBI in individuals 12 months post injury. METHODS: In this prospective longitudinal study, 37 adults (28 males, 9 females), mean age 42.3 years (SD 19.4), with predominately severe TBI (mean length of posttraumatic amnesia (PTA) 28...
May 11, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28502379/external-validation-of-the-clinical-indications-of-computed-tomography-ct-of-the-head-in-patients-with-low-energy-geriatric-hip-fractures
#12
Amrut Borade, Harish Kempegowda, Hemil H Maniar, Anthony De Giacomo, Paul Tornetta, Kasey Bramlett, Andrew J Marcantonio, Lucas S Marchand, Erik N Kubiak, William H Ip, James F Kellam, Jay S Bender, Eric G Meinberg, James Kee, Regis Renard, Michael Suk, Daniel S Horwitz
INTRODUCTION: On evaluation of the clinical indications of computed tomography (CT) scan of head in the patients with low-energy geriatric hip fractures, Maniar et al. identified physical evidence of head injury, new onset confusion, and Glasgow Coma Scale (GCS)<15 as predictive risk factors for acute findings on CT scan. The goal of the present study was to validate these three criteria as predictive risk factors for a larger population in a wider geographical distribution. PATIENTS AND METHODS: Patients ≥65 years of age with low-energy hip fractures from 6 trauma centers in a wide geographical distribution in the United States were included in this study...
April 26, 2017: Injury
https://www.readbyqxmd.com/read/28501288/recurrent-episodes-of-brief-global-amnesia-related-to-intrathecal-baclofen-pump-originally-mistaken-for-psychogenic-nonepileptic-seizures
#13
David Rosenblum, Gulam Noorani, Paul H Desan
No abstract text is available yet for this article.
March 16, 2017: Psychosomatics
https://www.readbyqxmd.com/read/28496375/revisiting-the-etiological-aspects-of-dissociative-identity-disorder-a-biopsychosocial-perspective
#14
REVIEW
Vedat Şar, Martin J Dorahy, Christa Krüger
Dissociative identity disorder (DID) is a chronic post-traumatic disorder where developmentally stressful events in childhood, including abuse, emotional neglect, disturbed attachment, and boundary violations are central and typical etiological factors. Familial, societal, and cultural factors may give rise to the trauma and/or they may influence the expression of DID. Memory and the construction of self-identity are cognitive processes that appear markedly and centrally disrupted in DID and are related to its etiology...
2017: Psychology Research and Behavior Management
https://www.readbyqxmd.com/read/28495597/the-learned-reinterpretation-of-fluency-in-amnesia
#15
Marie Geurten, Sylvie Willems
Fluency is one of many cues that are involved in memory decisions. To date, however, the extent to which fluency-based decisions are preserved in amnesia is not yet clear. In this study, we tested and found differences in how patients with amnesia (n=8) and control participants (n=16) use fluency when making recognition decisions (Experiment 1). Our results suggested that these differences could be due to changes in the readiness with which patients attribute the subjective feeling of fluency to pre-exposure when an alternative explanation is available (i...
May 8, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28489704/factors-associated-with-rehabilitation-outcomes-after-traumatic-brain-injury-comparing-functional-outcomes-between-tbims-centers-using-hierarchical-linear-modeling
#16
Marie N Dahdah, Melissa Hofmann, Christopher Pretz, Viktoriya An, Sunni A Barnes, Monica Bennett, Laura E Dreer, Thomas Bergquist, Shahid Shafi
OBJECTIVE: To examine differences in patient outcomes across Traumatic Brain Injury Model Systems (TBIMS) rehabilitation centers and factors that influence these differences using hierarchical linear modeling (HLM). SETTING: Sixteen TBIMS centers. PARTICIPANTS: A total of 2056 individuals 16 years or older with moderate to severe traumatic brain injury (TBI) who received inpatient rehabilitation. DESIGN: Multicenter observational cohort study using HLM to analyze prospectively collected data...
November 8, 2016: Journal of Head Trauma Rehabilitation
https://www.readbyqxmd.com/read/28488558/-identifying-mild-traumatic-brain-injury-clinical-signs-and-consequences
#17
J van der Naalt, W L Draijer, C A M van Bennekom
Identification of patients with mild traumatic brain injury (TBI) is important since 85,000 patients visit the emergency department with a head trauma annually. Although most patients recover well, 15-20% of the patients with head trauma develop persistent symptoms that interfere with resumption of daily activities. It is particularly important to identify the clinical signs that define mild TBI. Presence of anterograde amnesia after the injury, for example, is an important clinical diagnostic sign to establish the diagnosis of TBI...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28484905/historical-perspectives-on-ancient-greek-derived-a-prefixed-nomenclature-for-acquired-neurocognitive-impairment
#18
REVIEW
Philip Gerard Gasquoine
Distinct forms of acquired neurocognitive impairment are often described by "a" prefixed terms that derive from ancient Greek (and in one case Latin). Two modern English language neurological and neuropsychological reference books were searched to identify 17 such terms in contemporary usage: amnesia, akinesia, ataxia, aphasia, agraphia, anosmia, apraxia, athetosis, ageusia, achromatopsia, agnosia, alexia, amusia, anomia, anarthria, anosognosia, and acalculia. These were traced to their initial association with acquired neurocognitive impairment in German, English, and French language medical publications from the late 18th, 19th, and early 20th centuries (1770 through 1920)...
May 8, 2017: Neuropsychology Review
https://www.readbyqxmd.com/read/28481672/prediction-of-behavioural-and-cognitive-deficits-in-patients-with-traumatic-brain-injury-at-an-acute-rehabilitation-setting
#19
E de Guise, J LeBlanc, M Feyz, J Lamoureux, S Greffou
OBJECTIVE: The goal of this study was to identify factors that would predict short-term neuropsychological outcome in patients with traumatic brain injury (TBI) hospitalized in an acute rehabilitation setting. METHODS: Data was collected in the context of an acute early rehabilitation setting of a trauma centre. A brief neuropsychological assessment was carried out for 348 patients within a month following their trauma. RESULTS: Length of post-traumatic amnesia (PTA) was the best predictor of behavioural, memory and executive function variables within a month post TBI...
May 8, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28479395/effects-of-acute-alcohol-on-excitability-in-the-cns
#20
REVIEW
Neil L Harrison, Mary Jane Skelly, Emma P Grosserode, Daniel C Lowes, Tamara Zeric, Sara Phister, Michael C Salling
Alcohol has many effects on brain function and hence on human behavior, ranging from anxiolytic and mild disinhibitory effects, sedation and motor incoordination, amnesia, emesis, hypnosis and eventually unconsciousness. In recent years a variety of studies have shown that acute and chronic exposure to alcohol can modulate ion channels that regulate excitability. Modulation of intrinsic excitability provides another way in which alcohol can influence neuronal network activity, in addition to its actions on synaptic inputs...
May 4, 2017: Neuropharmacology
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