Comorbidities Tied to Malignant Hyperthermia in Children - Anesthesiology News

Comorbidities Tied to Malignant Hyperthermia in ChildrenAnesthesiology News“With MH, the basic defect is located within the skeletal muscle, so it's consistent that MH is associated with certain forms of muscular disease,” he said. ...

Cardiomyopathy and Exercise Intolerance in Muscle Glycogen Storage ...

In Panel B, analysis of complementary DNA (cDNA) of β-actin shows GYS1 and GYS2 transcripts from muscle obtained from Patient 2, control muscle, and control liver. Total RNA was extracted from fresh-frozen skeletal muscle and liver tissue. ..... which is easily revealed by routine histochemical investigation of muscle tissue. A sample of three siblings, of whom one may be too young to have symptoms, is too small for a complete delineation of the phenotype of this disease. ...

COL4A1 Mutations and Hereditary Angiopathy, Nephropathy, Aneurysms ...

We characterized the renal and extrarenal phenotypes of subjects from three families who had an autosomal dominant hereditary angiopathy with nephropathy, aneurysms, and muscle cramps (HANAC), which we propose is a syndrome. ..... Gly528→ Glu mutations identified in Families 1 and 3 are associated with muscle cramps. Such cramps might involve transient ischemia or microhemorrhages in the microvasculature or altered skeletal-muscle function linked to defective interaction ...

A Lethal Defect of Mitochondrial and Peroxisomal Fission — NEJM

Expression of the mutant DLP1 from the patient in fibroblasts from control subjects induces the abnormal mitochondrial (Panel A) and peroxisomal (Panel B) phenotypes, whereas expression of the wild-type DLP1 in fibroblasts from the ... We studied histologic and histochemical characteristics of a skeletal-muscle biopsy specimen using standard methods. Respiratory-chain enzymes were assayed in muscle homogenates as previous-ly described.6 Primary skin fibroblasts were ...

Phenotype and Course of Hutchinson–Gilford Progeria Syndrome — NEJM

Skeletal age23 averaged 3 months less than chronologic age, and it was delayed in the eight youngest children and advanced in the three oldest. The mean (±SE) percentage of body fat was only 16±1% and decreased with age (Figure 2D). .... This treatment normalizes the nuclear morphologic features of fibroblasts in Hutchinson–Gilford progeria syndrome30,37; in the transgenic mouse model,36 it maintains vascular smooth-muscle cells and decreases proteoglycan deposition in ...

Mutations in Sarcomere Protein Genes as a Cause of Dilated ...

How do allelic mutations in cardiac troponin T or the cardiac β-myosin heavy chain produce these distinct cardiac phenotypes? Integration of recent biophysical information about contractile proteins provides some insights into this question . .... J Leszyk, JH Collins, PC Leavis, T TaoCross-linking of rabbit skeletal muscle troponin subunits: labeling of cysteine-98 of troponin C with 4-maleimidobenzophenone and analysis of products formed in the binary complex with ...