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https://www.readbyqxmd.com/read/28919157/ethyl-acetate-fraction-of-trichilia-catigua-restores-long-term-retrograde-memory-and-reduces-oxidative-stress-and-inflammation-after-global-cerebral-ischemia-in-rats
#1
Jacqueline Godinho, Rúbia Maria Weffort de Oliveira, Anacharis Babeto de Sa-Nakanishi, Cristiano Correia Bacarin, Claudia Hitomi Huzita, Renata Longhini, João Carlos P Mello, Celso Vataru Nakamura, Isolde Santos Previdelli, Matheus Henrique Dal Molin Ribeiro, Humberto Milani
We originally reported that an ethyl-acetate fraction (EAF) of Trichilia catigua prevented the impairment of water maze learning and hippocampal neurodegeneration after transient global cerebral (TGCI) in mice. We extended that previous study by evaluating whether T. catigua (i) prevents the loss of long-term retrograde memory assessed in the aversive radial maze (AvRM), (ii) confers hippocampal and cortical neuroprotection, and (iii) mitigates oxidative stress and neuroinflammation in rats that are subjected to the four vessel occlusion (4-VO) model of TGCI...
September 14, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28910337/mouse-repeated-electroconvulsive-seizure-ecs-does-not-reverse-social-stress-effects-but-does-induce-behavioral-and-hippocampal-changes-relevant-to-electroconvulsive-therapy-ect-side-effects-in-the-treatment-of-depression
#2
Erin M van Buel, Hannes Sigrist, Erich Seifritz, Lianne Fikse, Fokko J Bosker, Robert A Schoevers, Hans C Klein, Christopher R Pryce, Ulrich Lm Eisel
Electroconvulsive therapy (ECT) is an effective treatment for depression, but can have negative side effects including amnesia. The mechanisms of action underlying both the antidepressant and side effects of ECT are not well understood. An equivalent manipulation that is conducted in experimental animals is electroconvulsive seizure (ECS). Rodent studies have provided valuable insights into potential mechanisms underlying the antidepressant and side effects of ECT. However, relatively few studies have investigated the effects of ECS in animal models with a depression-relevant manipulation such as chronic stress...
2017: PloS One
https://www.readbyqxmd.com/read/28904449/james-wenceslaus-papez-his-circuit-and-emotion
#3
Kalyan B Bhattacharyya
James Papez worked on the anatomical substrates of emotion and described a circuit, mainly composed of the hippocampus, thalamus and cingulum, and published his observations in 1937. However, such an idea existed before him, as evidenced by the rudimentary indications from Paul Broca, and Paul MacLean added some other structures like, septum, amygdala, and hypothalamus in its ambit and called it the limbic system. Paul Ivan Yakovlev, proposed a circuit which also referred to orbitofrontal, insular, anterior temporal lobe, and other nuclei of thalamus...
July 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28901737/melatonin-improves-cognitive-deficits-via-restoration-of-cholinergic-dysfunction-in-a-mouse-model-of-scopolamine-induced-amnesia
#4
Bai Hui Chen, Joon Ha Park, Dae Won Kim, Jinseu Park, Soo Young Choi, In Hye Kim, Jeong Hwi Cho, Tae-Kyeong Lee, Jae Chul Lee, Choong-Hyun Lee, In Koo Hwang, Young-Myeong Kim, Bing Chun Yan, Il-Jun Kang, Bich Na Shin, Yun Lyul Lee, Myoung Cheol Shin, Jun Hwi Cho, Young Joo Lee, Yong Hwan Jeon, Moo-Ho Won, Ji Hyeon Ahn
Melatonin is known to improve cognitive deficits and its functions have been studied in various disease models, including Alzheimer's disease. In this study, we investigated effects of melatonin on cognition and the cholinergic system of the septum and hippocampus in a mouse model of scopolamine-induced amnesia. Scopolamine (1 mg/kg) and melatonin (10 mg/kg) were administered intraperitoneally to mice for 2 and 4 weeks. The Morris water maze and passive avoidance tests revealed that both treatments of scopolamine significantly impaired spatial learning and memory; however, 2- and 4-week melatonin treatments significantly improved the spatial learning and memory...
September 13, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28893016/comparison-of-intubating-conditions-using-fentanyl-plus-propofol-versus-fentanyl-plus-midazolam-during-fiberoptic-laryngoscopy
#5
Parmod Kumar, Tripat Kaur, Gurpreet Kaur Atwal, Jatinderpaul Singh Bhupal, Ajay Kumar Basra
INTRODUCTION: Awake nasal or oral flexible fiberoptic intubation is the airway management technique of choice in known or anticipated difficult airway, unstable cervical fracture, limited mouth opening (as in temporomandibular joint disease), mandibular-maxillary fixation and severe facial burns. Both optimal intubating condition and patient comfort are important for fiberoptic intubation. Optimal intubating conditions provided by an ideal sedation regimen would ensure haemodynamic stability, patient comfort, attenuation of airway reflexes and amnesia...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28890703/observations-on-working-psychoanalytically-with-a-profoundly-amnesic-patient
#6
Paul A Moore, Christian E Salas, Suvi Dockree, Oliver H Turnbull
Individuals with profound amnesia are markedly impaired in explicitly recalling new episodic events, but appear to preserve the capacity to use information from other sources. Amongst these preserved capacities is the ability to form new memories of an emotional nature - a skill at the heart of developing and sustaining interpersonal relationships. The psychoanalytic study of individuals with profound amnesia might contribute to the understanding the importance of each memory system, including effects on key analytic processes such as transference and countertransference...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28884957/long-term-sequelae-of-hippocampal-lesions-in-patients-with-transient-global-amnesia-a-multiparametric-mri-study
#7
Xiaochuan Wang, Ran Zhang, Wenping Wei, Haibo Jiang, Zhongming Gao, Jianzhong Lin, Jiaxing Zhang
BACKGROUND: MRI signal diffusion-weighted imaging (DWI) hyperintensity in the hippocampus in patients with transient global amnesia (TGA) are resolved within several days after the onset of TGA. PURPOSE: To use multiparametric MRI to unravel the sequelae of TGA. STUDY TYPE: A prospective longitudinal study. POPULATION: Eight TGA patients. FIELD STRENGTH/SEQUENCE: A 3.0T Siemens Tim Trio MRI scanner with T1 -weighted MPRAGE, diffusion-weighted echo planar imaging, and multiecho gradient-recalled echo sequences...
September 7, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28880357/-the-use-of-dexmedetomidine-in-extreme-agitation
#8
E Roosens, J P Mulier, G Heylens, J De Fruyt
In clinical practice antipsychotics, benzodiazepines and/or antihistamines are used to calm agitated patients. If agitation persists and patients have contraindications for these substances, then anesthetics, such as propofol, can also be used as well, to serve as a sedative. Our attention was drawn to a particular case in which dexmedetomidine was used as a sedative.<br/> AIM: To study the literature on the use of α2-agonists, such as dexmedetomidine, in the treatment of extreme agitation.<br/> METHOD: We reviewed the relevant scientific literature...
2017: Tijdschrift Voor Psychiatrie
https://www.readbyqxmd.com/read/28876177/ancient-indian-concepts-about-phenomenology-biology-and-therapeutics-of-epilepsy
#9
Ravindra Arya
This article discusses etiology, pathogenesis, symptoms, and treatment of epilepsy, as described in Charaka Samhitā (translation: Charaka's Compendium) and Sushruta Samhitā, the two core texts of Ayurveda, an ancient system of medicine. Ayurveda emphasized amnesia and loss of consciousness as core features of epileptic seizures (Sanskrit: apasmar; translation: apa negation, smaran memory) and recognized that seizures occur due to a disturbance in brain function or flow of "humors" to the brain. Semiology of various seizure types was well described...
September 6, 2017: Journal of the History of the Neurosciences
https://www.readbyqxmd.com/read/28876149/acute-post-concussive-symptoms-in-young-children
#10
Coco Bernard, Audrey McKinlay, David Krieser, Renee Testa, And Jennie Ponsford
OBJECTIVES: Despite peaks of mild traumatic brain injury (mTBI) incidence in young children, few studies have examined the nature of post-concussive symptoms (PCSs) in children under the age of eight, whilst controlling for pre-injury symptoms and effects of trauma. The current study aimed to identify which PCSs differentiate children with mTBI from trauma controls early post-injury, and whether these differed among preschool and school-aged children. METHODS: The sample comprised 101 children aged 2-12 presenting to an emergency department, with concussion or other minor bodily injury (control)...
September 6, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28875137/risk-factor-analysis-of-additional-administration-of-sedative-agent-and-patient-dissatisfaction-in-intravenous-conscious-sedation-using-midazolam-for-third-molar-extraction
#11
Dong-Whan Shin, Jin-Yong Cho, Yoon-Sic Han, Hye-Young Sim, Hee-Sun Kim, Da-Un Jung, Ho Lee
OBJECTIVES: The primary purpose of this study was to investigate the factors related with additional administration of sedative agent during intravenous conscious sedation (IVS) using midazolam (MDZ). The secondary purpose was to analyze the factors affecting patient satisfaction. MATERIALS AND METHODS: Clinical data for 124 patients who had undergone surgical extraction of mandibular third molar under IVS using MDZ were retrospectively investigated in this case-control study...
August 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28872831/novel-vilazodone-tacrine-hybrids-as-potential-multitarget-directed-ligands-for-the-treatment-of-alzheimer-s-disease-accompanied-with-depression-design-synthesis-and-biological-evaluation
#12
Xiaokang Li, Huan Wang, Yixiang Xu, Wenwen Liu, Qi Gong, Wei Wang, Xiaoxia Qiu, Jin Zhu, Fei Mao, Haiyan Zhang, Jian Li
Depression is one of the most frequent psychiatric complications of Alzheimer's disease (AD), affecting up to 50% of the patients. A novel series of hybrid molecules were designed and synthesized by combining the pharmacophoric features of vilazodone and tacrine as potential multitarget-directed ligands for the treatment of AD with depression. In vitro biological assays were conducted to evaluate the compounds; among the 30 hybrids, compound 1e showed relatively balanced profiles between acetylcholinesterase inhibition (IC50 = 3...
September 19, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28860672/temporal-vulnerability-and-the-post-disaster-window-of-opportunity-to-woo-a-case-study-of-an-african-american-floodplain-neighborhood-after-hurricane-floyd-in-north-carolina
#13
Daniel H de Vries
After major flooding associated with Hurricane Floyd (1999) in North Carolina, mitigation managers seized upon the "window of opportunity" to woo residents to accept residential buyout offers despite sizable community resistance. I present a theoretical explanation of how post-crisis periods turn into "opportunities" based on a temporal referential theory that complements alternative explanations based on temporal coincidence, panarchy, and shock-doctrine theories. Results from fieldwork conducted from 2002 to 2004 illustrate how several temporal influences compromised collective calibration of "normalcy" in local cultural models, leading to an especially heightened vulnerability to collective surprise...
2017: Human Ecology: An Interdisciplinary Journal
https://www.readbyqxmd.com/read/28860028/dissociative-amnesia-disproportionate-retrograde-amnesia-stressful-experiences-and-neurological-circumstances
#14
REVIEW
C Thomas-Antérion
Dissociative amnesias have been reported in neurological episodes mild enough to not cause any visible lesions on morphological examination. Disproportionate retrograde amnesia with or without identity loss happens in the context of psychological trauma (known or not). In metabolic imaging studies, some authors have reported functional alterations, particularly in the bilateral hippocampus, right temporal regions and inferolateral prefrontal cortex, despite normal morphological imaging. To avoid the presumption of an organic, psychogenic or mixed origin for such changes, De Renzi et al...
August 28, 2017: Revue Neurologique
https://www.readbyqxmd.com/read/28859551/fractionating-controlled-memory-processes-and-recall-of-context-in-recognition-memory-a-case-report
#15
Kata Pauly-Takacs, Chris J A Moulin
Recollection has been described as both a recognition memory judgment requiring cognitive control and the ability to retrieve contextual information about a prior occurrence. At the core of this article is the question whether or not these two subcomponents of recollection are dissociable in amnesia. In three experiments, we explored the influence of exclusion task instructions on performance in a single case (CJ), with the view to understand the relative contributions of control and source memory to recognition memory decisions...
September 1, 2017: Neurocase
https://www.readbyqxmd.com/read/28853509/-comparison-between-propofol-and-propofol-remifentanil-sedation-under-target-controlled-infusion-for-impacted-supernumerary-teeth-extraction-surgery-for-children
#16
Zhang Hao, Hou Yali, Li Xiangjun, Dong Fusheng, Lin Ruihua
Objective The aim of this study is to compare sedation titrated under target-controlled infusion of propofol and propofol-remifentanil for impacted supernumerary teeth extraction surgery for children. Methods A total of 60 children with anterior maxillary region impacted supernumerary teeth extraction surgery were divided randomly into two groups, namely, propofol group (group P, n=30) and propofol-remifentanil group (group PR, n=30). In group P, a titrated infusion of propofol was started until the modified observer's assessment of alertness/sedation (OAA/S) scale reached level 3 before the actual surgery...
August 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28853423/daytime-sleepiness-more-than-just-obstructive-sleep-apnea-osa
#17
Luigi Ferini-Strambi, Marco Sforza, Mattia Poletti, Federica Giarrusso, Andrea Galbiati
Excessive Daytime Sleepiness (EDS) is a common condition with a significant impact on quality of life and general health. A mild form of sleepiness can be associated with reduced reactivity and modest distractibility symptoms, but more severe symptomatic forms are characterized by an overwhelming and uncontrollable need to sleep, causing sudden sleep attacks, amnesia and automatic behaviors. The prevalence in the general population is between 10 and 25%. Furthermore, EDS has been considered a core symptom of obstructive sleep apnea (OSA), as well as being the main symptom of primary hypersomnias such as narcolepsy types 1 and 2, and idiopathic hypersomnia...
August 28, 2017: La Medicina del Lavoro
https://www.readbyqxmd.com/read/28842342/phytochemical-analysis-molecular-docking-and-antiamnesic-effects-of-methanolic-extract-of-silybum-marianum-l-gaertn-seeds-in-scopolamine-induced-memory-impairment-in-mice
#18
Nausheen Nazir, Nasiara Karim, Heba Abdel-Halim, Imran Khan, Syed Fazal Wadood, Muhammad Nisar
ETHNOPHARMACOLOGICAL RELEVANCE: Silybum marianum (L.) Gaertn and its main component silymarin have been extensively studied and have been found effective in various neurological disorders. AIMS OF THE STUDY: The aim of the current study is to identify phytoconstituents in the methanolic extract (Me. Ext) of Silybum marianum (L.) Gaertn seeds and to study in-vivo the anti-amnesic effects along with in vitro antioxidant and acetylcholinesterase (AChE) and buteryl cholinesterase (BChE) inhibition potential...
August 24, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28829986/neurobiology-of-autoimmune-encephalitis
#19
REVIEW
Masaki Fukata, Norihiko Yokoi, Yuko Fukata
Autoimmune encephalitis presenting with amnesia, seizures, and psychosis is highly topical in basic and clinical neuroscience. Recent studies have identified numerous associated autoantibodies, targeting cell-surface synaptic proteins including neurotransmitter receptors (e.g. NMDA receptors (NMDARs)) and a secreted protein, LGI1. In vitro and in vivo analyses of the influence of the autoantibodies have begun to clarify their causal roles. Of particular interest is the generation of recombinant monoclonal antibodies from patients' B cells with anti-NMDAR encephalitis...
August 19, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28829629/traumatic-brain-injury-and-post-traumatic-amnesia-a-retrospective-review-of-discharge-outcomes
#20
Carlo Divita, Stacey George, Christopher J Barr
PRIMARY OBJECTIVE: To investigate if patients with traumatic brain injury, who are discharged to the community before emergence from post-traumatic amnesia (PTA), experience more adverse outcomes than those discharged after emergence from PTA. RESEARCH DESIGN: A retrospective review of previously collected data and medical records. METHODS AND PROCEDURES: Occurrences of adverse events including hospital readmissions, disengagement from follow-up services, non-compliance with discharge precautions, support system breakdown or undue carer strain at the post-discharge clinic review were recorded...
August 22, 2017: Brain Injury: [BI]
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