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Clinical and radiological aspects of bilateral temporal abnormalities: pictorial essay
Abstract The temporal lobes are vulnerable to several diseases, including infectious, immune-mediated, degenerative, vascular, metabolic, and neoplastic processes. Therefore, lesions in the temporal lobes can pose a diagnostic challenge for the radiologist. The temporal lobes are connected by structures such as the anterior commissure, corpus callosum, and hippocampal commissure. That interconnectedness favors bilateral involvement in various clinical contexts. This pictorial essay is based on a retrospective analysis of case files from a tertiary university hospital and aims to illustrate some of the conditions that simul...
Source: Radiologia Brasileira - March 26, 2021 Category: Radiology Source Type: research

GLUTAMATE RECEPTOR ANTIBODIES IN NEUROLOGICAL DISEASES: Anti-AMPA-GluR3 antibodies, Anti-NMDA-NR1 antibodies, Anti-NMDA-NR2A/B antibodies, Anti-mGluR1 antibodies or Anti-mGluR5 antibodies are present in subpopulations of patients with either: Epilepsy, Encephalitis, Cerebellar Ataxia, Systemic Lupus Erythematosus (SLE) and Neuropsychiatric SLE, Sjogren's syndrome, Schizophrenia, Mania or Stroke. These autoimmune anti-glutamate receptor antibodies can bind neurons in few brain regions, activate glutamate receptors, decrease glutamate receptor's expression, impair glutamate-induced signaling and function, activate Blood Brain Barrier endothelial cells, kill neurons, damage the brain, induce behavioral/psychiatric/cognitive abnormalities and Ataxia in animal models, and can be removed or silenced in some patients by immunotherapy.
Abstract Glutamate is the major excitatory neurotransmitter of the Central Nervous System (CNS), and it is crucially needed for numerous key neuronal functions. Yet, excess glutamate causes massive neuronal death and brain damage by excitotoxicity-detrimental over activation of glutamate receptors. Glutamate-mediated excitotoxicity is the main pathological process taking place in many types of acute and chronic CNS diseases and injuries. In recent years, it became clear that not only excess glutamate can cause massive brain damage, but that several types of anti-glutamate receptor antibodies, that are present in ...
Source: Herpes - August 1, 2014 Category: Infectious Diseases Authors: Levite M Tags: J Neural Transm Source Type: research

Infectious Diseases: Images in Clinical Medicine
Editor: V. Dimov, M.D., Cleveland ClinicHypoglossal Nerve Palsy during Meningococcal Meningitis. NEJM, 10/2014.Herpes Zoster Involving the S1 Dermatome. NEJM, 05/2014.Tinea Faciei. NEJM, 05/2014.Disseminated Cryptococcosis in a CLL patient. 05/2014.Scrofuloderma due to Mycobacterium tuberculosis. NEJM, 06/2012.Leonine Facies in Lepromatous Leprosy. NEJM, 04/2012.Intestinal Infestation with Ancylostoma ceylanicum. NEJM, 03/2012.Kerion celsi form of tinea capitis caused by a T-cell hypersensitivity reaction. NEJM, 03/2012.Eye can see a nest of worms! Thelazia callipaeda. Lancet, 03/2012.Madura Foot. NEJM, 01/2012.Paragonimia...
Source: Clinical Cases and Images - August 22, 2009 Category: General Medicine Tags: Images Infectious Diseases Source Type: news