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RESEARCH PRODUCT
Infantile intranuclear rod myopathy.
Anders PiirsooOtto SchoferMichael GaudeIrene WarloHans H. GoebelStephan Kehrsubject
Artificial ventilationMalePediatricsmedicine.medical_specialtygenetic structuresmedicine.medical_treatmentBiopsyMyosinsMyopathies Nemaline03 medical and health sciences0302 clinical medicineFatal Outcome030225 pediatricsmedicineHumansEndotheliumFloppy InfantMicroscopy ImmunoelectronMuscle SkeletalCell Nucleusbusiness.industryInfant NewbornPediatrics Perinatology and Child HealthFemalesense organsNeurology (clinical)Intranuclear Rod Myopathybusiness030217 neurology & neurosurgerydescription
This report concerns three unrelated floppy infants, two girls and one boy, each biopsied at the age of 1 month. They were hypotonic since birth and required artificial ventilation. The two girls died at the ages of 4 and 3½ months, respectively, the boy is still alive at the age of 2 years, but requires assisted ventilation. Each of the three infants showed, by muscle biopsy, abundant intranuclear rods, the boy and one girl also had sarcoplasmic rods, which were not present in the other girl's muscle. Absence of sarcoplasmic rods, but the presence of intranuclear rods could also be documented in her autopsied muscle. Using an antibody against α-actinin, immunoelectron microscopy showed reaction of the sarcoplasmic and intranuclear rods demonstrating their Z-band origin. To our knowledge, this is the first report on rod myopathy with intranuclear rods only and of an immunoelectron microscopic demonstration of α-actinin in intranuclear rods. The presence of intranuclear rods in infants with nemaline myopathy also appears to indicate a grave prognosis of their rod myopathy. (J Child Neurol 1997; 12:22-30).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-01-01 | Journal of child neurology |