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Korsakoff's

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https://www.readbyqxmd.com/read/28340112/long-term-mortality-of-patients-with-an-alcohol-related-wernicke-korsakoff-syndrome
#1
Arantza Sanvisens, Paola Zuluaga, Daniel Fuster, Inmaculada Rivas, Jordi Tor, Miguel Marcos, Antonio J Chamorro, Roberto Muga
Aims: To characterize a series of contemporary patients with alcohol-related Wernicke's encephalopathy (WE) or Korsakoff's syndrome (KS) and to update the current prognosis of disease. Methods: Retrospective and prospective study of patients diagnosed with an alcohol-related WE or KS between 2002 and 2011 in a tertiary hospital. Socio-demographic, alcohol use characteristics, signs and symptoms, co-morbidity and blood parameters were obtained at admission. Patients were followed up until 2013 and causes of death were ascertained through the review of charts...
March 10, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/28316271/visuospatial-declarative-learning-despite-profound-verbal-declarative-amnesia-in-korsakoff-s-syndrome
#2
Erik Oudman, Albert Postma, Tanja C W Nijboer, Jan W Wijnia, Stefan Van der Stigchel
Korsakoff's syndrome (KS) is a neuropsychiatric disorder characterised by severe amnesia. Although the presence of impairments in memory has long been acknowledged, there is a lack of knowledge about the precise characteristics of declarative memory capacities in order to implement memory rehabilitation. In this study, we investigated the extent to which patients diagnosed with KS have preserved declarative memory capacities in working memory, long-term memory encoding or long-term memory recall operations, and whether these capacities are most preserved for verbal or visuospatial content...
March 20, 2017: Neuropsychological Rehabilitation
https://www.readbyqxmd.com/read/28292462/source-monitoring-in-korsakoff-s-syndrome-did-i-touch-the-toothbrush-or-did-i-imagine-doing-so
#3
Mohamad El Haj, Jean Louis Nandrino, Yann Coello, Ralph Miller, Pascal Antoine
There is a body of research suggesting compromised ability to distinguish between different external sources of information (i.e., external monitoring) in Korsakoff's syndrome. Here we replicate and extend this literature by assessing the ability of patients with Korsakoff's syndrome to distinguish between different external sources of information (i.e., external monitoring), between internal and external sources of information (i.e., reality monitoring), and between different internal sources of information (i...
February 24, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28289650/repetitive-transcranial-magnetic-stimulation-for-wernicke-korsakoff-syndrome-a-case-report
#4
So Won Chung, Shin Who Park, Young Jae Seo, Jae-Hyung Kim, Chan Ho Lee, Jong Youb Lim
A 57-year-old man who was diagnosed with Wernicke-Korsakoff syndrome showed severe impairment of cognitive function and a craving for alcohol, even after sufficient supplementation with thiamine. After completing 10 sessions of 10 Hz repetitive transcranial magnetic stimulation (rTMS) at 100% of the resting motor threshold over the left dorsolateral prefrontal cortex, dramatic improvement in cognitive function and a reduction in craving for alcohol were noted. This is the first case report of the efficacy of a high-frequency rTMS in the treatment of Wernicke-Korsakoff syndrome...
February 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28225048/thiamine-deficiency-oxidative-metabolic-pathways-and-ethanol-induced-neurotoxicity-how-poor-nutrition-contributes-to-the-alcoholic-syndrome-as-marchiafava-bignami-disease
#5
REVIEW
L M P Fernandes, F R Bezerra, M C Monteiro, M L Silva, F R de Oliveira, R R Lima, E A Fontes-Júnior, C S F Maia
Ethanol is an important risk factor for the occurrence of several brain disorders that depend on the amount, period and frequency of its consumption. Chronic use of ethanol often leads to the development of neurodegenerative syndromes, which cause morphological and functional impairments such as foetal alcohol syndrome in newborns exposed to ethanol during pregnancy, Wernicke-Korsakoff Syndrome and, more rarely, Marchiafava-Bignami disease (MBD). MBD is characterized by primary degeneration of the corpus callosum, without inflammation and is associated with oxidative stress and hypovitaminosis, as well as altered mental status, to mention dementia, seizures, depression and so on...
February 22, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28214879/thiamine-deprivation-produces-a-liver-atp-deficit-and-metabolic-and-genomic-effects-in-mice-findings-are-parallel-to-those-of-biotin-deficiency-and-have-implications-for-energy-disorders
#6
Alain de J Hernandez-Vazquez, Josue Andres Garcia-Sanchez, Elizabeth Moreno-Arriola, Ana Salvador-Adriano, Daniel Ortega-Cuellar, Antonio Velazquez-Arellano
Thiamine is one of several essential cofactors for ATP generation. Its deficiency, like in beriberi and in the Wernicke-Korsakoff syndrome, has been studied for many decades. However, its mechanism of action is still not completely understood at the cellular and molecular levels. Since it acts as a coenzyme for dehydrogenases of pyruvate, branched-chain keto acids, and ketoglutarate, its nutritional privation is partly a phenocopy of inborn errors of metabolism, among them maple syrup urine disease. In the present paper, we report metabolic and genomic findings in mice deprived of thiamine...
February 18, 2017: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/28213665/neurologic-manifestations-of-vitamin-b-deficiency-after-bariatric-surgery
#7
Suriya Punchai, Zubaidah Nor Hanipah, Katherine M Meister, Philip R Schauer, Stacy A Brethauer, Ali Aminian
INTRODUCTION: The aim of this study was to assess the incidence, clinical presentation, and outcomes of neurologic disorders secondary to vitamin B deficiencies following bariatric surgery. METHODS: Patients at a single academic institution who underwent bariatric surgery and developed neurologic complications secondary to low levels of vitamins B1, B2, B6, and B12 between the years 2004 and 2015 were studied. RESULTS: In total, 47 (0.7%) bariatric surgical patients (Roux-en-Y gastric bypass n = 36, sleeve gastrectomy n = 9, and duodenal switch n = 2) developed neurologic manifestations secondary to vitamin B deficiencies...
February 17, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28160301/source-memory-in-korsakoff-syndrome-disentangling-the-mechanisms-of-temporal-confusion
#8
Mélanie Brion, Philippe de Timary, Anne-Lise Pitel, Pierre Maurage
BACKGROUND: Korsakoff syndrome (KS), most frequently resulting from alcohol dependence (ALC), is characterized by severe anterograde amnesia. It has been suggested that these deficits may extend to other memory components, and notably source memory deficits involved in the disorientation and temporal confusion frequently observed in KS. However, the extent of this source memory impairment in KS and its usefulness for the differential diagnosis between ALC and KS remain unexplored. METHODS: Nineteen patients with KS were compared with 19 alcohol-dependent individuals and 19 controls in a source memory test exploring temporal context confusions ("continuous recognition task")...
February 3, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28063599/-risk-factors-and-psychological-vulnerabilities-to-binge-drinking-in-youth
#9
E De Wever, V Quaglino
For years, a large number of studies have demonstrated the harmful effects of alcohol consumption on the brain and therefore on behavior and cognition. These studies first aimed at identifying the consequences of alcohol abuse consumption, more specifically in pathologies such as alcohol-dependence or Korsakoff syndrome. Researchers then also started to focus on vulnerabilities to alcohol consumption, especially in hyper fast alcohol consumption called binge-drinking (BD). Indeed BD, which is a particularly dangerous form of alcohol consumption, is usually observed in adolescents and young adults...
January 4, 2017: L'Encéphale
https://www.readbyqxmd.com/read/27987266/neuroimaging-of-chronic-alcohol-misuse
#10
REVIEW
Caitriona Logan, Hamed Asadi, Hong Kuan Kok, Seamus T Looby, Paul Brennan, Alan O'Hare, John Thornton
Alcohol is one of the most commonly abused substances worldwide. It results in a wide range of diseases and disorders affecting many organ systems. Alcohol-related nutritional deficiencies and electrolyte disturbance leave chronic abusers at risk of a range of demyelinating conditions to which the radiologist and clinician should always be alert. These include Wernicke's encephalopathy, Korsakoff's syndrome, Marchiafava-Bignami disease and osmotic demyelination. Cerebral volume loss is also a commonly encountered neuroimaging phenomenon in chronic alcohol abusers...
December 16, 2016: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/27984051/brain-endothelial-dysfunction-following-pyrithiamine-induced-thiamine-deficiency-in-the-rat
#11
Sumit Sarkar, Serguei Liachenko, Merle G Paule, John Bowyer, Joseph P Hanig
Prolonged vitamin B1 (thiamine) deficiency can lead to neurological disorders such as Wernicke's encephalopathy and Wernicke-Korsakoff Syndrome (WKS) in humans. These thiamine deficiency disorders have been attributed to vascular leakage, blood-brain barrier breakdown and neuronal loss in the diencephalon and brain stem. However, endothelial dysfunction following thiamine deficiency and its relationship to the phenomenon of neurodegeneration has not been clearly elucidated. The present study sought to begin to address this issue by evaluating vascular morphology and integrity in a pyrithiamine (PT)-induced rat model of thiamine deficiency...
October 28, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27918121/prevalence-and-severity-of-behavioural-symptoms-in-patients-with-korsakoff-syndrome-and-other-alcohol-related-cognitive-disorders-a-systematic-review
#12
REVIEW
Ineke J Gerridzen, Wiltine G Moerman-van den Brink, Marja F Depla, Els M L Verschuur, Ruth B Veenhuizen, Johannes C van der Wouden, Cees M P M Hertogh, Karlijn J Joling
OBJECTIVE: Experiences from clinical practice suggest that behavioural symptoms in patients with Korsakoff syndrome (KS) are a frequent problem. Knowledge about behavioural symptoms is important in understanding and managing these symptoms. The aim of this study is to review the prevalence and severity of behavioural symptoms in KS. METHODS: Relevant articles were identified by searching Medline (PubMed), PsycINFO, Embase and CINAHL up to 4 June 2014. Two reviewers independently selected the studies, extracted their baseline data and assessed methodological quality using a standardized checklist...
December 5, 2016: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/27852471/what-does-extinction-have-to-do-with-confabulation
#13
REVIEW
Armin Schnider, Louis Nahum, Radek Ptak
Behaviourally spontaneous confabulation denotes a distinct syndrome consisting of confabulations that patients act upon, disorientation, and amnesia. It corresponds to the stable form of the original Korsakoff syndrome. While the syndrome may also occur in confusional states and degenerative dementia, this article is about the syndrome as it occurs after acute and focal brain damage. The patients act according to ideas and obligations that can mostly be traced back to real experiences in their past, but which are not currently valid guides of thinking and behaviour...
November 1, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/27829317/personal-semantic-and-episodic-autobiographical-memories-in-korsakoff-syndrome-a-comparison-of-interview-methods
#14
Yvonne C M Rensen, Roy P C Kessels, Ellen M Migo, Arie J Wester, Paul A T M Eling, Michael D Kopelman
OBJECTIVE: The temporal gradient in patients with Korsakoff's syndrome has been of particular interest in the literature, as many studies have found evidence for a steep temporal gradient, but others have observed more uniform remote memory impairment across all past time periods. Inconsistencies might be the result of the nature of remote memory impairment under study (i.e., nonpersonal or autobiographical memory) and of methodological differences in the examination of remote memory loss...
November 10, 2016: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/27818965/alcohol-related-dementia-and-neurocognitive-impairment-a-review-study
#15
REVIEW
Ankur Sachdeva, Mina Chandra, Mona Choudhary, Prabhoo Dayal, Kuljeet Singh Anand
CONTEXT: Alcohol consumption has escalated rapidly in many countries over the past decade. Evidence suggests a correlation between alcohol use and cognitive decline. We have systematically reviewed the concept and controversies, epidemiology, nosology, neuropathology and neurobiology, neuropsychology and management updates of alcohol-related dementia (ARD) in this paper. EVIDENCE ACQUISITION: We retrieved papers for this review by searching the PubMed database for terms "alcohol and dementia", "alcohol and cognitive impairment", and "alcohol and wernicke-korsakoff" mentioned in the title of the published papers...
September 2016: International Journal of High Risk Behaviors & Addiction
https://www.readbyqxmd.com/read/27783220/the-importance-of-mammillary-body-efferents-for-recency-memory-towards-a-better-understanding-of-diencephalic-amnesia
#16
Andrew J D Nelson, Seralynne D Vann
Despite being historically one of the first brain regions linked to memory loss, there remains controversy over the core features of diencephalic amnesia as well as the critical site for amnesia to occur. The mammillary bodies and thalamus appear to be the primary locus of pathology in the cases of diencephalic amnesia, but the picture is complicated by the lack of patients with circumscribed damage. Impaired temporal memory is a consistent neuropsychological finding in Korsakoff syndrome patients, but again, it is unclear whether this deficit is attributable to pathology within the diencephalon or concomitant frontal lobe dysfunction...
October 25, 2016: Brain Structure & Function
https://www.readbyqxmd.com/read/27772780/non-alcoholic-korsakoff-syndrome-in-psychiatric-patients-with-a-history-of-undiagnosed-wernicke-s-encephalopathy
#17
Georgios Nikolakaros, Tuula Ilonen, Timo Kurki, Janina Paju, Sokratis G Papageorgiou, Risto Vataja
Wernicke's encephalopathy is often undiagnosed, particularly in non-alcoholics. There are very few reports of non-alcoholic patients diagnosed with Korsakoff syndrome in the absence of a prior diagnosis of Wernicke's encephalopathy and no studies of diffusion tensor imaging in non-alcoholic Korsakoff syndrome. We report on three non-alcoholic psychiatric patients (all women) with long-term non-progressive memory impairment that developed after malnutrition accompanied by at least one of the three Wernicke's encephalopathy manifestations: ocular abnormalities, ataxia or unsteadiness, and an altered mental state or mild memory impairment...
November 15, 2016: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/27595167/intrusions-and-provoked-and-spontaneous-confabulations-on-memory-tests-in-korsakoff-s-syndrome
#18
Yvonne C M Rensen, Joukje M Oosterman, Serge J W Walvoort, Paul A T M Eling, Roy P C Kessels
INTRODUCTION: Intrusions on verbal memory tests have been used as an index for clinical confabulation. Severe memory impairments in combination with executive dysfunction have been suggested to be the underlying mechanism of confabulation, but to date, this relation is unclear. The aim of this study was (a) to examine the relation between (different types of) intrusions and confabulations in a large sample of confabulating patients with Korsakoff's syndrome (KS) and (b) to investigate whether different measures of executive functioning and memory performance are related to provoked and spontaneous confabulation...
March 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/27576603/vitamin-b1-deficient-mice-show-impairment-of-hippocampus-dependent-memory-formation-and-loss-of-hippocampal-neurons-and-dendritic-spines-potential-microendophenotypes-of-wernicke-korsakoff-syndrome
#19
Hiroyoshi Inaba, Takuya Kishimoto, Satoru Oishi, Kan Nagata, Shunsuke Hasegawa, Tamae Watanabe, Satoshi Kida
Patients with severe Wernicke-Korsakoff syndrome (WKS) associated with vitamin B1 (thiamine) deficiency (TD) show enduring impairment of memory formation. The mechanisms of memory impairment induced by TD remain unknown. Here, we show that hippocampal degeneration is a potential microendophenotype (an endophenotype of brain disease at the cellular and synaptic levels) of WKS in pyrithiamine-induced thiamine deficiency (PTD) mice, a rodent model of WKS. PTD mice show deficits in the hippocampus-dependent memory formation, although they show normal hippocampus-independent memory...
December 2016: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/27571012/characteristic-neuroimaging-abnormalities-of-korsakoff-syndrome
#20
J Bradley Segal, Marc A Bouffard, Gottfried Schlaug
No abstract text is available yet for this article.
October 1, 2016: JAMA Neurology
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