Prospective study of spinal muscular atrophy before age 6 years. DCN/SMA Group
Male; Child; Humans; Prospective Studies; Female; Child Preschool; Infant; Neurologic Examination; Motor Skills/physiology; Muscle Contraction/physiology; Range of Motion Articular/physiology; Reflex Stretch/physiology; Spinal Muscular Atrophies of Childhood/diagnosis/physiopathology; Sucking Behavior/physiology; tone and motor problems; SMA1; trajectory; characteristics; tongue fasciculation; facial weakness
Spinal muscular atrophy (SMA) is a common neuromuscular disorder of childhood, associated with a high mortality rate during the first 2 years of life. Most practitioners expect patients with SMA to follow a progressive course with loss of muscle strength and function over 2-10 years. Counselling sessions with parents frequently emphasize the high mortality rate and risk for respiratory failure. The progressive nature of SMA has been attributed to the loss of motor neurons. Fifty-eight children, ages 6 years and younger, were examined between January, 1987, and April, 1992, as part of a large, multicenter collaborative study of SMA. Muscle function was evaluated at regular intervals using a standardized protocol that was demonstrated to be reliable. We determined a prevalence of 56% for tongue fasciculations, a prevalence of 22% for facial weakness, and persistent deep tendon reflexes in one patient. Improved motor function and acquired milestones during the study were documented. This work should contribute toward a better understanding of the natural history of SMA.
Iannaccone S T; Browne R H; Samaha F J; Buncher C R
Pediatric Neurology
1993
Article information provided for research and reference use only. PedPalASCNET does not hold any rights over the resource listed here. All rights are retained by the journal listed under publisher and/or the creator(s).
<a href="http://doi.org/10.1016/0887-8994(93)90082-n" target="_blank" rel="noreferrer noopener">10.1016/0887-8994(93)90082-n</a>
Validation of the Children's Hospital of Philadelphia Infant Test of Neuromuscular Disorders (CHOP INTEND)
infant; Pediatrics; Rehabilitation; validity; outcome assessment; child; female; male; disease severity; (health care); atrophies of childhood/diagnosis; child development/physiology; childhood/physiopathology; disability evaluation; humans; motor skills/physiology; natural-history; physical therapy/methods; preschool; psychometrics/methods; severity of illness index; sma; smn2 copy number; spinal muscular; spinal muscular atrophies of; spinal muscular-atrophy; tone and motor problems; SMA1; tool development; scale development; CHOP INTEND
Purpose: Preliminary validation of the Children's Hospital of Philadelphia Infant Test of Neuromuscular Disorders (CHOP INTEND) for motor skill assessment in spinal muscular atrophy type I. Methods: A total of 27 subjects 3 to 260 months old (mean = 49, SD = 69) with spinal muscular atrophy-I were evaluated with the CHOP INTEND. Subjects were evaluated as part of a multicenter natural history study. Results: CHOP INTEND scores and age were significantly correlated (r = -0.51, P = .007; 2 survival of the motor neuron [SMN] 2 gene copies, n = 16, r = -0.60, 3 SMN2 gene copies, n = 9, r = -0.83). Respiratory support and CHOP INTEND scores were correlated (r = -0.74, P <.0001, n = 26). The CHOP INTEND and age regression in patients with 2 copies versus 3 copies of SMN2 approached significance (P = .0711, n = 25). Subjects who required respiratory support scored significantly lower (mean = 15.5, SD = 10.2 vs mean = 31.2, SD = 4.2, P <.0001, n = 27). Correlation with motor unit number estimation and combined motor unit activation were not significant. Conclusion: The CHOP INTEND reflects measures of disease severity and supports continued exploration of the CHOP INTEND. (Pediatr Phys Ther 2011; 23: 322-326)
Glanzman A M; McDermott M P; Montes J; Martens W B; Flickinger J; Riley S; Quigley J; Dunaway S; O'Hagen J; Deng L Y; Chung W K; Tawil R; Darras B T; Yang M; Sproule D; De Vivo D C; Kaufmann P; Finkel R S; Pediatric Neuromuscular Clinical Research; Muscle Study Group
Pediatric Physical Therapy
2011
Article information provided for research and reference use only. PedPalASCNET does not hold any rights over the resource listed here. All rights are retained by the journal listed under publisher and/or the creator(s).
<a href="http://doi.org/10.1097/PEP.0b013e3182351f04" target="_blank" rel="noreferrer noopener">10.1097/PEP.0b013e3182351f04</a>
Change in gross motor abilities of girls and women with rett syndrome over a 3- to 4-year period
Age Factors; Disease Progression; Young Adult; Humans; Longitudinal Studies; Adult; Adolescent; Female; Retrospective Studies; Australia; Linear Models; Mutation/genetics; Methyl-CpG-Binding Protein 2/genetics; Arginine/genetics; Motor Skills/physiology; Movement Disorders/etiology/genetics; Rett Syndrome/complications/genetics; tone and motor problems; Rett syndrome; trajectory; characteristics
Rett syndrome is a rare but severe neurological disorder typically associated with a mutation in the MECP2 gene. We describe change in gross motor function over 3 to 4 years for 70 subjects participating in the Australian Rett Syndrome Database. Linear regression was used to assess relationships with age, genotype, and general and complex gross motor skills scores measured on the Gross Motor Scale for Rett syndrome. Skills were slightly better or maintained in approximately 40% of subjects and slightly decreased in approximately 60%. Teenagers and women who walked in 2004 were less likely to lose complex skills than those younger. Girls with a p.R294X mutation were more likely to lose complex motor skills, otherwise skill changes were spread across the mutation categories. In conclusion, small changes were observed over this period with greater stability of skills in teenagers and women with the ability to walk.
Foley K R; Downs J; Bebbington A; Jacoby P; Girdler S; Kaufmann W E; Leonard H
Journal of Child Neurology
2011
Article information provided for research and reference use only. PedPalASCNET does not hold any rights over the resource listed here. All rights are retained by the journal listed under publisher and/or the creator(s).
<a href="http://doi.org/10.1177/0883073811402688" target="_blank" rel="noreferrer noopener">10.1177/0883073811402688</a>