Autoimmune Dementia

2018 ◽  
Vol 38 (03) ◽  
pp. 303-315 ◽  
Author(s):  
Justin Long ◽  
Gregory Day
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Cognitive Impairment ◽  
Relevant Information ◽  
Paraneoplastic Encephalitis ◽  
Immune Mediated ◽  
Paraneoplastic Disease ◽  
Chronic Complication ◽  
The Central Nervous System ◽  
Diagnostic Framework

AbstractDementia refers to an acquired syndrome of intraindividual cognitive decline that ultimately interferes with an individual's ability to manage their usual duties at work or home. As experience with the diagnosis and management of patients with autoimmune and paraneoplastic encephalitis (AE) has expanded, it has become increasingly apparent that dementia may arise as a subacute or chronic complication of immune-mediated injury to the central nervous system. Progressive memory and thinking problems may represent the first (or only) sign of an underlying autoimmune or paraneoplastic disease. Accordingly, there is a need to routinely consider the diagnosis of AE in patients with dementia, and to evaluate patients recovering from AE for clinically meaningful cognitive impairment. We review and summarize the available evidence concerning the diagnosis and care of AE patients with associated cognitive impairment, herein referred to as autoimmune dementia (AiD). Relevant information is used to propose a novel diagnostic framework that may be applied to improve recognition, and facilitate the expedited evaluation and treatment of patients with AiD.

scholarly journals Neurological and mental health consequences of COVID-19: potential implications for well-being and labor force

2021 ◽  
Author(s):  
I B Meier ◽  
C Vieira Ligo Teixeira ◽  
I Tarnanas ◽  
F Mirza ◽  
L Rajendran
Keyword(s):  
Mental Health ◽  
Central Nervous System ◽  
Nervous System ◽  
Cognitive Impairment ◽  
Immune Cell ◽  
Previous History ◽  
Well Being ◽  
Acute Disseminated Encephalomyelitis ◽  
The Central Nervous System ◽  
Neurological Protection

Abstract Recent case studies show that the SARS-CoV-2 infectious disease, COVID-19, is associated with accelerated decline of mental health, in particular, cognition in elderly individuals, but also with neurological and neuropsychiatric illness in young people. Recent studies also show a bidirectional link between COVID-19 and mental health in that people with previous history of psychiatric illness have a higher risk for contracting COVID-19 and that COVID-19 patients display a variety of psychiatric illnesses. Risk factors and the response of the central nervous system to the virus show large overlaps with pathophysiological processes associated with Alzheimer’s disease, delirium, post-operative cognitive dysfunction and acute disseminated encephalomyelitis, all characterized by cognitive impairment. These similarities lead to the hypothesis that the neurological symptoms could arise from neuroinflammation and immune cell dysfunction both in the periphery as well as in the central nervous system and the assumption that long-term consequences of COVID-19 may lead to cognitive impairment in the well-being of the patient and thus in today’s workforce, resulting in large loss of productivity. Therefore, particular attention should be paid to neurological protection during treatment and recovery of COVID-19, while cognitive consequences may require monitoring.

scholarly journals Acute Disseminated Encephalomyelitis (ADEM): A Demyelinating Disease with Specific Morphological Features

2021 ◽  
pp. 106689692199356
Author(s):  
Fleur Cordier ◽  
Lars Velthof ◽  
David Creytens ◽  
Jo Van Dorpe
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Differential Diagnosis ◽  
Clinical Case ◽  
Demyelinating Disease ◽  
Acute Disseminated Encephalomyelitis ◽  
Demyelinating Diseases ◽  
Demyelinating Disorder ◽  
Immune Mediated ◽  
The Central Nervous System

Acute disseminated encephalomyelitis (ADEM) is a rare immune-mediated inflammatory and demyelinating disorder of the central nervous system. Its characteristic perivenular demyelination and inflammation aid in the differential diagnosis with other inflammatory demyelinating diseases. Here, we present a clinical case of ADEM, summarize its histological hallmarks, and discuss pitfalls concerning the most important neuropathological differential diagnoses.

scholarly journals The incidence and pathophysiology of neurological symptoms in COVID-19

2021 ◽  
Vol 40 (4) ◽  
pp. 33-42
Author(s):  
Igor V. Litvinenko ◽  
Miroslav M. Odinak ◽  
Nikolay V. Tsygan ◽  
Aleksander V. Ryabtsev
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Rare Complication ◽  
Cranial Nerves ◽  
Neurological Symptoms ◽  
Immune Mediated ◽  
High Incidence ◽  
The Central Nervous System ◽  
Coronavirus Infection

The central nervous system seems to be quite vulnerable to SARS-CoV-2, leading to a variety of alteration pathways, high incidence and variability of the neurological symptoms of COVID-19. The COVID-19 symptoms, possibly associated with alteration to the central nervous system, include hyperthermia, shortness of breath, fatigue, headache, dizziness, dysphonia, dysphagia, hyposmia and anosmia, hypogeusia and ageusia, impairment of consciousness. The impairment of olfaction and gustation are the most common symptoms of the nervous system alteration (98% and 70%, respectively), which is most likely a consequence of the alteration of the receptors. Presumably the pathogenesis of dysphonia and dysphagia may involve neurodegenerative mechanisms or may be associated with a predominantly demyelinating alteration of the caudal cranial nerves. Pathomorphological findings in the brain of the COVID-19 patients include diffuse hypoxic and focal ischemic injuries of various sizes up to ischemic infarctions (in thrombosis of large arteries); microangiopathy; vasculitis; diapedetic and confluent hemorrhages with possible progression to hemorrhagic infarctions and rarely intracerebral hematomas. Acute cerebrovascular accident worsens the course of COVID-19 and can worsen the clinical outcome, taking into account the mechanisms of the central nervous system alteration in highly contagious coronavirus infections (SARS-CoV, MERS, SARS-CoV-2), including embolism, hypoxia, neurodegeneration, systemic inflammatory response and immune-mediated alteartion to the nervous tissue. A fairly rare complication of coronavirus infection, however, acute myelitis requires attention due to the severity of neurological disorders. The literature data show high incidence and polymorphism of the symptoms of the central nervous system alteration, as well as the important role of the cerebrovascular and neurodegenerative pathogenesis of brain alteration in COVID-19, which is taken into account in examining and treating the patients with new coronavirus infection. (1 figure, bibliography: 61 refs)

Acute Disseminated Encephalomyelitis

2012 ◽  
Vol 27 (11) ◽  
pp. 1408-1425 ◽  
Author(s):  
Gulay Alper
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Acute Disseminated Encephalomyelitis ◽  
Protein Levels ◽  
Demyelinating Disorder ◽  
Immune Mediated ◽  
Elevated Protein ◽  
Demyelinating Lesions ◽  
Diagnostic Difficulties ◽  
The Central Nervous System

Acute disseminated encephalomyelitis is an immune-mediated inflammatory and demyelinating disorder of the central nervous system, commonly preceded by an infection. It principally involves the white matter tracts of the cerebral hemispheres, brainstem, optic nerves, and spinal cord. Acute disseminated encephalomyelitis mainly affects children. Clinically, patients present with multifocal neurologic abnormalities reflecting the widespread involvement in central nervous system. Cerebrospinal fluid may be normal or may show a mild pleocytosis with or without elevated protein levels. Magnetic resonance image (MRI) shows multiple demyelinating lesions. The diagnosis of acute disseminated encephalomyelitis requires both multifocal involvement and encephalopathy by consensus criteria. Acute disseminated encephalomyelitis typically has a monophasic course with a favorable prognosis. Multiphasic forms have been reported, resulting in diagnostic difficulties in distinguishing these cases from multiple sclerosis. In addition, many inflammatory disorders may have a similar presentation with frequent occurrence of encephalopathy and should be considered in the differential diagnosis of acute disseminated encephalomyelitis.

Immune and Infectious Diseases

2018 ◽  
pp. 430-470
Author(s):  
Andrea C. Adams
Keyword(s):  
Multiple Sclerosis ◽  
Central Nervous System ◽  
Nervous System ◽  
Young People ◽  
Connective Tissue ◽  
Infectious Diseases ◽  
Temporal Profile ◽  
Immune Mediated ◽  
The Central Nervous System ◽  
The Common

Many immune-mediated diseases and infections affect the central and peripheral nervous systems. The common feature that characterizes both immune-mediated diseases and infections is a subacute temporal profile. Immune-mediated disease can affect only the nervous system or involve the nervous system as part of a systemic illness, as in vasculitis and connective tissue disease. Multiple sclerosis (MS), the most common disabling neurologic illness of young people, is the prototypical immune-mediated disease of the central nervous system (CNS).

scholarly journals Acute Disseminated Encephalomyelitis Following Typhoid Fever: A Case Report

2014 ◽  
Vol 9 (4) ◽  
pp. 55-58
Author(s):  
R Adhikari ◽  
A Tayal ◽  
PK Chhetri ◽  
B Pokhrel
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Case Report ◽  
Typhoid Fever ◽  
Demyelinating Disease ◽  
Acute Disseminated Encephalomyelitis ◽  
Medical Sciences ◽  
Cerebellar Syndrome ◽  
Immune Mediated ◽  
The Central Nervous System

The involvement of central nervous system in children with typhoid fever is common. Acute disseminated encephalomyelitis is a rare immune mediated and demyelinating disease of the central nervous system that usually affects children. We report a 7-year-old child with typhoid fever who developed acute cerebellar syndrome due to acute disseminated encephalomyelitis.Journal of College of Medical Sciences-Nepal, 2013, Vol-9, No-4, 55-58 DOI: http://dx.doi.org/10.3126/jcmsn.v9i4.10237

scholarly journals Role of 5-HT7 receptors in the immune system in health and disease

2019 ◽  
Vol 26 (1) ◽  
Author(s):  
Alejandro Quintero-Villegas ◽  
Sergio Iván Valdés-Ferrer
Keyword(s):  
Central Nervous System ◽  
Immune Response ◽  
Nervous System ◽  
Immune System ◽  
Blood Platelets ◽  
Pain Tolerance ◽  
Immune Mediated ◽  
The Central Nervous System ◽  
Health And Disease

AbstractIn mammalians, serotonin (5-HT) has critical roles in the central nervous system (CNS), including mood stability, pain tolerance, or sleep patterns. However, the vast majority of serotonin is produced by intestinal enterochromaffin cells of the gastrointestinal tract and circulating blood platelets, also acting outside of the CNS. Serotonin effects are mediated through its interaction with 5-HT receptors (5-HTRs), a superfamily with a repertoire of at least fourteen well-characterized members. 5-HT7 receptors are the last 5-HTR member to be identified, with well-defined functions in the nervous, gastrointestinal, and vascular systems. The effects of serotonin on the immune response are less well understood. Mast cells are known to produce serotonin, while T cells, dendritic cells, monocytes, macrophages and microglia express 5-HT7 receptor. Here, we review the known roles of 5-HT7 receptors in the immune system, as well as their potential therapeutic implication in inflammatory and immune-mediated disorders.

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