Document Detail

Anthropometric and craniofacial patterns in mentally retarded males with emphasis on the fragile X syndrome.
MedLine Citation:
PMID:  8275570     Owner:  NLM     Status:  MEDLINE    
Anthropometric and craniofacial profile patterns indicating the percent difference from the overall mean were developed on 34 physical parameters with 31 white, mentally retarded males (23 adults and 8 children) with the fra(X) syndrome matched for age with 31 white, mentally retarded males without a known cause of their retardation. The fra(X) syndrome males consistently showed larger dimensions for all anthropometric variables, with significant differences for height, sitting height, arm span, hand length, middle finger length, hand breadth, foot length, foot breadth, and testicular volume. A craniofacial pattern did emerge between the two groups of mentally retarded males, but with overlap of several variables. Significant differences were noted for head circumference, head breadth, lower face height, bizygomatic diameter, inner canthal distance, ear length and ear width, with the fra(X) syndrome males having larger head dimensions (head circumference, head breadth, head length, face height and lower face height), but smaller measurements for minimal frontal diameter, bizygomatic diameter, bigonial diameter, and inner canthal distance. Several significant correlations were found with the variables for both mentally retarded males with and without the fra(X) syndrome. In a combined anthropometric and craniofacial profile of 19 variables comparing 26 white fra(X) syndrome males (13 with high expression (> 30%) and 13 with low expression (< 30%), but matched for age), a relatively flat profile was observed with no significant differences for any of the variables. Generally, fra(X) syndrome males with increased fragile X chromosome expression have larger amplifications of the CGG trinucleotide repeat of the FMR-1 gene. No physical differences were detectable in our study between fra(X) males with high expression and apparently larger amplifications of the CGG trinucleotide repeats compared with those patients with low expression. Our research illustrates the use of anthropometry in identifying differences between mentally retarded males with or without the fra(X) syndrome and offers a comprehensive approach for screening males for the fra(X) syndrome and selecting those individuals for cytogenetic and/or molecular genetic testing.
M G Butler; R Pratesi; M S Watson; W R Breg; D N Singh
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Clinical genetics     Volume:  44     ISSN:  0009-9163     ISO Abbreviation:  Clin. Genet.     Publication Date:  1993 Sep 
Date Detail:
Created Date:  1994-02-09     Completed Date:  1994-02-09     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0253664     Medline TA:  Clin Genet     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  129-38     Citation Subset:  IM    
Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-2578.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Child, Preschool
European Continental Ancestry Group
Facial Bones / anatomy & histology*
Foot / anatomy & histology
Fragile X Syndrome / pathology*
Hand / anatomy & histology
Mental Retardation / pathology*
Middle Aged
Skull / anatomy & histology*
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Ambras syndrome: delineation of a unique hypertrichosis universalis congenita and association with a...
Next Document:  Prenatal detection of an inverted X chromosome in a male.