Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0026827 (hypotonia)
 5,860 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A newborn male was noted to have bilateral congenital corneal opacification. Findings from examination disclosed a variety of dysmorphic features, including cutis laxa, progeroid aspect, short stature, multiple hyperextensible subluxated joints, muscular hypotonia, and hyperreflexia. Bilateral penetrating keratoplasties were performed; histopathologic examination revealed diffuse epithelial thickening, loss of the Bowman layer, and stromal attenuation with anterior stromal scarring. Special stains showed no deposition of abnormal material in the corneas. Electron microscopy demonstrated absence of Bowman layer differentiation with a paucity of collagen fibers, as well as extensive small elastic fibers in the anterior stroma. The diagnosis of De Barsy syndrome was made, a rare progeroid syndrome associated with characteristic ocular, facial, skeletal, dermatologic, and neurologic abnormalities. De Barsy syndrome should be included in the differential diagnosis of congenital corneal opacification; its distinctive clinical features enable the clinician to easily differentiate it from other causes of congenitally cloudy corneas.
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PMID:Congenital corneal opacification in De Barsy syndrome. 1117 95

We report on a Palestinian family with three affected individuals exhibiting progeroid syndrome characterized by intrauterine growth retardation, a progeroid appearance, failure to thrive, short stature, and hypotonia. The progeroid features were evident at birth. All the affected members of this family have survived beyond the neonatal period and one of them is currently a 27-year-old adult. As parental consanguinity suggested an autosomal recessive mode of inheritance, we employed homozygosity mapping using single nucleotide polymorphism arrays followed by next generation whole exome sequencing to identify the disease-causing gene. We were able to identify a single block of homozygosity shared between all the affected members of the studied family spanning 2.3 Mb on chromosome 19p13.3p13.2. However, Sanger sequencing of known genes and whole exome sequencing of the three affected sibs did not reveal a convincing causal mutation. These findings are anticipated to open the way for the identification of the molecular causes underlying this syndrome.
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PMID:A progeroid syndrome with neonatal presentation and long survival maps to 19p13.3p13.2. 2369 34