Premium
Disease progression in a mouse model of amyotrophic lateral sclerosis: the influence of chronic stress and corticosterone
Author(s) -
Fidler Jonathan A.,
Treleaven Christopher M.,
Frakes Ashley,
Tamsett Thomas J.,
McCrate Mary,
Cheng Seng H.,
Shihabuddin Lamya S.,
Kaspar Brian K.,
Dodge James C.
Publication year - 2011
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fj.11-190819
Subject(s) - amyotrophic lateral sclerosis , corticosterone , glucocorticoid , medicine , astrogliosis , atrophy , endocrinology , motor neuron , chronic stress , progressive muscular atrophy , disease , neuroscience , biology , central nervous system , hormone
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease characterized by motor neuron cell loss, muscular atrophy, and a shortened life span. Survival is highly variable, as some patients die within months, while others live for many years. Exposure to stress or the development of a nonoptimal stress response to disease might account for some of this variability. We show in the SOD1 G93A mouse model of ALS that recurrent exposure to restraint stress led to an earlier onset of astrogliosis and microglial activation within the spinal cord, accelerated muscular weakness, and a significant decrease in median survival (105 vs . 122 d) when compared to non‐stressed animals. Moreover, during normal disease course, ALS mice display a cacostatic stress response by developing an aberrant serum corticosterone circadian rhythm. Interestingly, we also found that higher corticosterone levels were significantly correlated with both an earlier onset of paralysis (males: r 2 =0.746; females: r 2 =0.707) and shorter survival times (males: r 2 =0.680; females: r 2 =0.552) in ALS mice. These results suggest that stress is capable of accelerating disease progression and that strategies that modulate glucocorticoid metabolism might be a viable treatment approach for ALS.—Fidler, J. A., Treleaven, C. M., Frakes, A., Tamsett, T. J., McCrate, M., Cheng, S. H., Shihabuddin, L. S., Kaspar, B. K., Dodge, J. C. Disease progression in a mouse model of amyotrophic lateral sclerosis: the influence of chronic stress and corticosterone. FASEB J. 25, 4369–4377 (2011). www.fasebj.org