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Results for “ECTODERMAL DEFECT”

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Expanded phenotype of cranioectodermal dysplasia (Sensenbrenner syndrome)

Cranioectodermal dysplasia (CED) is an autosomal recessive condition characterized by defects of ectoderm-derived structures and characteristic bone anomalies. We report on a 27-month-old Caucasian girl with CED, pre- and postnatal growth retardation, microcephaly, hypoplasia of the posterior corpus callosum, photophobia, and aberrant calcium homeostasis. Since new traits were encountered, we reviewed all reported patients and one unpublished case and compared the frequency rates of the individual manifestations. The findings present in all patients are dolichocephaly and rhizomelia. Ectodermal dysplasia manifestations are variable. Short thorax and heart defect are inconsistent. Previously unreported anomalies include growth deficiency, delayed psychomotor development, microcephaly, photophobia, and abnormal calcium homeostasis. These clinical manifestations may facilitate the diagnosis of this condition.

Adult↗

Nude mouse embryo: ectodermal nature of the primordial thymic defect.

Sterile female homozygous nude mice were rendered fertile through a graft of thymic epithelium from heterozygous littermates 3 days after birth. Homozygous nude embryos were compared with embryos age (8-18 days). In nude mice, the embryological anomaly is noticeable from the 11th day of gestation and essentially consists of a failure of the ectoderm from the 3rd branchial cleft to proliferate and differentiate into a cervical vesicle. As a result, the endoderm from the 3rd pouch degenerates into cystic formations instead of differentiating.

Animals↗

New multiple congenital anomalies/mental retardation syndrome with cardio-facio-cutaneous involvement--the CFC syndrome.

Eight patients (4 males, 4 females) were affected with a previously undefined multiple congenital anomalies/mental retardation syndrome which was designated the Cardio-Facio-Cutaneous (CFC) syndrome and which includes congenital heart defects, characteristic facial appearance, ectodermal abnormalities, and growth failure. Cardiac defects were variable, the most common being pulmonic stenosis and atrial septal defect. Typical facial characteristics were high forehead with bitemporal constriction, hypoplasia of supraorbital ridges, antimongoloid slant of palpebral fissures, depressed bridge of nose, and posteriorly angulated ears with prominent helices. The hair was usually sparse and friable. Skin changes varied from patchy hyperkeratosis to a severe generalized ichthyosis-like condition. All cases were sporadic in occurrence, there was no family history of consanguinity, and chromosomes were normal. Although presumed to be genetic, the cause of the CFC syndrome remains unknown.

Abnormalities, Multiple↗