Studies nerve-muscle connections in people with amyotrophic lateral sclerosis
Observes changes in nerve-muscle connections in adults with amyotrophic lateral sclerosis.
Plain-language title generated from the registry record
Registry title: Reinnervation and Neuromuscular Transmission in ALS
Key facts
- Where
- Aarhus, DenmarkSee the site
Where in Denmark
- Department of Neurology, Aarhus University HospitalAarhus, DenmarkTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- University of Aarhus
- Trial code
- NCT06219759
- Record updated
- 7 August 2024
- Original description
The aim of this study is to describe the changes in the neuromuscular connection in patients with amyotrophic lateral sclerosis (ALS). The study consist of three substudies that have the following main hypothesis:Read full original descriptionShow less
Reinnervation and Neuromuscular Transmission in Patients With Amyotrophic Lateral Sclerosis
The aim of this study is to describe the changes in the neuromuscular connection in patients with amyotrophic lateral sclerosis (ALS). The study consist of three substudies that have the following main hypothesis:
1. that ALS patients do not demonstrate equal capacity for muscle reinnervation and that reinnervation preserves muscle function and thereby slows down progression. 2. that blood concentrations of c-terminal agrin fragment (bCAF) reflect neuromuscular transmission deficiency and that blood concentration of neural cell adhesion molecule reflects degree of muscle denervation in patients. 3. that ALS patients with decrement when examined with repetitive nerve stimulation have more physical fatigue, slower progression, higher degree of reinnervation and higher bCAF compared to ALS patients without decrement.
There will be 3 inclusion groups.
1. patients referred for neurophysiological examination on suspicion of motor neuron disease. 2. healthy controls 3. disease control: patients with another motor neuron disease with slow progression.
All participants will be invited for at least 1 visit (baseline). If participants in group 1 eventually receive the diagnosis of ALS they will be invited for 2 additional visits 4 og 8 months after baseline visit, respectively.
Examinations will consist of:
* nerve conduction study * repetitive nerve stimulation (except for healthy controls) to examine impairment of the neuromuscular connection. * motor unit number estimation with MScanFit to estimate number and size of motor units. * ultrasound examination of muscles to measure size and condition of muscles. * questionnaires on fatigue and functional status. * blood sample for measurement of specialized analysis (c-terminal agrin fragment and neural cell adhesion molecule) and routine analysis (liver and kidney function as well as neurofilament light chain) * muscle strength assessment manually and by dynamometer to follow progression of muscle weakness * bioelectrical impedance measurement to follow the overall body composition.
Inclusion: Referred to clinical neurophysiological examination on suspicion of motor neuron disease or diagnosed with ALS according to Gold Coast criteria within the last 3 months; Age ≥18 years old; Able and willing to provide informed consent.
Exclusion: Former central or peripheral nervous system disease; Diabetes; Pregnancy; For disease controls the exclusion criteria are the same, but the inclusion criteria:; Diagnosed with disease with slow, progressive loss of motor neurons; Age ≥18 years old; Electrophysiological signs of polyneuropathy at baseline visit; Pacemaker; Able and willing to provide informed consent.