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Mice overexpressing lamin B1 in oligodendrocytes recapitulate the age-dependent motor signs, but not the early autonomic cardiovascular dysfunction of autosomal-dominant leukodystrophy (ADLD)
- Source :
- Experimental Neurology. 301:1-12
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Autosomal dominant leukodystrophy (ADLD) is a rare adult-onset demyelinating disease caused by overexpression of lamin B1, a nuclear lamina filament. Early autonomic dysfunction involving the cardiovascular system before progressive somatic motor dysfunction is a striking feature of most cases of ADLD. In the Plp-FLAG-LMNB1 transgenic mouse model, lamin B1 overexpression in oligodendrocytes elicits somatic motor dysfunction and neuropathology akin to ADLD. Here, we investigate whether Plp-FLAG-LMNB1 mice also develop autonomic cardiovascular dysfunction before or after somatic motor dysfunction. We find that Plp-FLAG-LMNB1 mice have preserved cardiovascular responses to changes in wake-sleep state and ambient temperature and normal indexes of autonomic modulation at 37–42 weeks of age despite a progressive somatic motor dysfunction, which includes impairments of walking ability (the ability to walk on a narrow path was impaired in 80% of mice at 34–38 weeks of age) and subtle breathing derangements. Only late in the development of the disease phenotype did Plp-FLAG-LMNB1 mice develop a structural deficit of sympathetic noradrenergic fibers, with a 38% decrease in fiber profiles in the kidneys at 44–47 weeks of age. We demonstrate that while the Plp-FLAG-LMNB1 mouse model recapitulates the age-dependent motor dysfunction of ADLD, it does not show signs of early autonomic cardiovascular dysfunction, raising the possibility that oligodendrocyte dysfunction may not be sufficient to cause the full spectrum of clinical features present in ADLD.
- Subjects :
- 0301 basic medicine
Genetically modified mouse
medicine.medical_specialty
Neurology
Somatic cell
Heart rate
Mice, Transgenic
Neuropathology
Article
Mice
03 medical and health sciences
0302 clinical medicine
Developmental Neuroscience
Demyelinating disease
medicine
Animals
Gait
Arterial pressure
Lamin Type B
business.industry
Leukodystrophy
medicine.disease
Oligodendrocyte
Disease Models, Animal
Oligodendroglia
Phenotype
030104 developmental biology
medicine.anatomical_structure
Autonomic Nervous System Diseases
Cardiovascular Diseases
Breathing
Sleep
business
Sympathetic
Neuroscience
Lamin
030217 neurology & neurosurgery
Demyelinating Diseases
Subjects
Details
- ISSN :
- 00144886
- Volume :
- 301
- Database :
- OpenAIRE
- Journal :
- Experimental Neurology
- Accession number :
- edsair.doi.dedup.....c5dc766f4b9f6d6d6a03fb4ef6890782