Genetic and Morphological Analysis of Thyrotoxic Periodic Paralysis
Study Details
Study Description
Brief Summary
The study aims to analyze the genetic variance between thyrotoxic periodic paralysis (TPP) patients and pure hyperthyroidism individuals. Meanwhile, the investigators also intended to evaluate the morphological difference in effected skeletal muscles and investigate their relation with genetic variance.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
Detailed Description
Chinese males of their third and forth decades are extremely predisposed to periodic paralysis when they are hyperthyroid. Due to their imbalanced predilection to the disease, genetic variance is considered to be critical to the pathogenesis. In addition, since proximal limb skeletal muscles are the major sites of target, and they are also believed to play a role in the disease generation. Thus, we intend to analyze the genetic and morphological variances between TPP patients and pure hyperthyroidism patients and simultaneously the relation between genetic variance and morphological difference. In this way, we hope to provide evidence for a better understanding of the disease.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| TPP group TPP patients(between episodes of paralysis), the inclusion criteria consisted of a certain history of acute limb muscle weakness, hypokalemia and decreased TSH with elevated free FT4, FT3. Subjects who suffered from hyperthyroid myopathy with long term muscle weakness, family periodic paralysis, renal tubular acidosis, hyperaldosteronism, hemiplegia, paraplegia, or any history of other metabolic or traumatic muscular disease were excluded. |
Other: No intervention involved
No interventions will be involved since it is an observational study
|
| hyperthyroidism group Control group, we included subjects with evidence of aberrant thyroid function (decreased TSH, elevated FT4, FT3) without paralysis. Graves' disease(GD) was preferred which required information concerning either increased thyrotrophin receptor antibody(TRAb) level, ophthalmopathy or diffusively enlarged goiter. Individuals with pure thyroid associated ophthalmopathy, history of thyroidectomy due to malignancy or adenoma as well as subacute thyroiditis and pituitary hyperthyroidism were excluded. |
Other: No intervention involved
No interventions will be involved since it is an observational study
|
Outcome Measures
Primary Outcome Measures
- Single Nucleotide Polymorphisms [2 years]
- skeletal muscle size of biceps brachii and quadriceps femoris [2 years]
Eligibility Criteria
Criteria
Inclusion Criteria:
A recent history(within three months) of acute limb muscle weakness, hypokalemia and decreased TSH with elevated free FT4, FT3.
Exclusion Criteria:
Hyperthyroid myopathy with long term muscle weakness, family periodic paralysis, renal tubular acidosis, hyperaldosteronism, hemiplegia, paraplegia, or any history of other metabolic or traumatic muscular disease,
Contacts and Locations
Locations
No locations specified.Sponsors and Collaborators
- West China Hospital
Investigators
- Principal Investigator: Haoming Tian, MD., West China Hospital
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- HTian