Sporadic amyotrophic lateral sclerosis as an infectious disease: a possible role of cyanobacteria?

Abstract:

:The available epidemiological data for amyotrophic lateral sclerosis (ALS) support an infectious etiology and lead us to propose a new hypothesis. We examined older epidemiological data concerning categories of the population with increased incidence (aged people, people living in rural areas, farmers, breeders), more recent epidemiological reports regarding Italian soccer players, AIDS patients, people living in highly polluted areas, and reports of cases of conjugal and pregnancy-associated ALS. The toxic and infectious hypotheses lead us to suggest a role for cyanobacteria in the production of endogenous beta-N-methylamino-L-alanine. Infection from a cyanobacterium, or another ubiquitous bacterium having similar characteristics, may be the missing clue to the etiology of ALS. We speculate that ubiquitous bacteria secreting toxic amino acids and "colonizing" tissues and organs in the human body might be the common element linking motor neuron diseases in Guam to sporadic ALS in the rest of the world.

journal_name

Med Hypotheses

journal_title

Medical hypotheses

authors

Stipa G,Taiuti R,de Scisciolo G,Arnetoli G,Tredici MR,Biondi N,Barsanti L,Lolli F

doi

10.1016/j.mehy.2006.04.070

subject

Has Abstract

pub_date

2006-01-01 00:00:00

pages

1363-71

issue

6

eissn

0306-9877

issn

1532-2777

pii

S0306-9877(06)00430-0

journal_volume

67

pub_type

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