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International Journal Of Bilogical Sciences

.: Home > International Journal Of Bilogical Sciences > 2015 > Volume 11 Number 5 > Ruth Alonso1, Diana Pisa1, Ana Isabel Marina1, Esperanza Morato1, Alberto Rábano2, Izaskun Rodal2 and Luis Carrasco

Evidence for Fungal Infection in Cerebrospinal Fluid and Brain Tissue from Patients with Amyotrophic Lateral Sclerosis

Ruth Alonso1, Diana Pisa1, Ana Isabel Marina1, Esperanza Morato1, Alberto Rábano2, Izaskun Rodal2 and Luis Carrasco
1. Centro de Biología Molecular “Severo Ochoa”. c/Nicolás Cabrera, 1. Universidad Autónoma de Madrid. Cantoblanco. 28049 Madrid. Spain. 2. Department of Neuropathology and Tissue Bank, Unidad de Investigación Proyecto Alzheimer, Fundación CIEN, Instituto de Salud Carlos III, Madrid. Spain.  Corresponding author: lcarrasco@cbm.csic.es, Telephone number: +34 1 497 84 50
Abstract :

Among neurogenerative diseases, amyotrophic lateral sclerosis (ALS) is a fatal illness characterized by a progressive motor neuron dysfunction in the motor cortex, brainstem and spinal cord. ALS is the most common form of motor neuron disease; yet, to date, the exact etiology of ALS remains unknown. In the present work, we have explored the possibility of fungal infection in cerebrospinal fluid (CSF) and in brain tissue from ALS patients. Fungal antigens, as well as DNA from several fungi, were detected in CSF from ALS patients. Additionally, examination of brain sections from the frontal cortex of ALS patients revealed the existence of immunopositive fungal antigens comprising punctate bodies in the cytoplasm of some neurons. Fungal DNA was also detected in brain tissue using PCR analysis, uncovering the presence of several fungal species. Finally, proteomic analyses of brain tissue demonstrated the occurrence of several fungal peptides. Collectively, our observations provide compelling evidence of fungal infection in the ALS patients analyzed, suggesting that this infection may play a part in the etiology of the disease or may constitute a risk factor for these patients

Keywords :
Amyotrophic lateral sclerosis; fungal infection; fungal PCR; brain histological analysis; proteomic analysis.

Date Deposited : 23 Feb 2016 12:55

Last Modified : 23 Feb 2016 12:55

Official URL: http://www.ijbs.com/v11i5

Volume 11, Number 5, - 2015 , ISSN 1449-2288

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