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Published on: August 18, 2014
Olfactory deficits in boys with cleft palate
R A Richman1, P R Sheehe, T McCanty
1Department of Pediatrics, State University of New York Health Science Center Syracuse.
Insights
Individuals with cleft palate may experience olfactory deficits, particularly boys. This study found a stronger association between cleft palate and smell impairment in males, suggesting a potential sex-influenced trait.
Area of Science:
- Otolaryngology
- Neuroscience
- Genetics
Background:
- Cleft palate is a common congenital condition.
- Olfactory deficits can impact quality of life.
- The relationship between cleft palate and smell function is not well understood.
Purpose of the Study:
- To investigate the prevalence of olfactory deficits in individuals with cleft palate.
- To compare olfactory function between subjects with and without cleft palate.
- To explore potential sex differences in the association between cleft palate and olfactory dysfunction.
Main Methods:
- An odor identification task involving ten common household odors was administered.
- Thirty-five subjects with cleft palate (ages 7-22) were compared to 68 age-matched controls.
- Subjects selected odorant responses from a list; odorants were presented in randomized sequences.
Main Results:
- Subjects with cleft palate showed a higher prevalence of olfactory deficits compared to controls.
- Olfactory scores were significantly lower in girls with cleft palate than in boys without cleft palate.
- The association between cleft palate and olfactory deficits was stronger in boys than in girls, suggesting a sex-influenced trait.
Conclusions:
- Cleft palate is associated with an increased risk of olfactory deficits.
- The olfactory deficits linked to cleft palate appear to be more pronounced in boys.
- These findings suggest that cleft palate-related olfactory dysfunction may be a sex-influenced trait.
Abstract:
An odor identification task was used to determine whether individuals with cleft palate (with or without cleft lip) also have an increased prevalence of olfactory deficits. Olfactory responses of 35 affected subjects (7 to 22 years of age) were compared with those of 68 subjects of comparable age without cleft palates. Subjects were requested to identify the smell of ten common household odors. They selected their responses from an alphabetized list of the test odorants. After a practice trial, the set of odorants was presented five times in randomized sequences. The percentage of correct responses increased with age for prepubertal and pubertal subjects without cleft palates. Although the olfactory scores of girls without cleft palates continued to increase after puberty, this trend was absent in boys. On the average, the girls with cleft palates, compared with only three of 34 boys without cleft palates, had olfactory scores less than 60% correct. There was no evidence of heterogeneity in the magnitude or direction of the relationship between any of the subtypes of cleft palate and olfactory dysfunction. In this study, cleft palate is more strongly associated with olfactory deficits in boys than in girls, suggesting the possibility that the deficit may be a sex-influenced trait.
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