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Chromosomal abnormalities in child psychiatric patients
1Department of Child and Adolescent Psychiatry, College of Medicine, Seoul National University, Korea. kehong@plaza.snu.ac.kr
Journal of Korean Medical Science
|September 15, 1999
Summary
Chromosomal abnormalities occur in 11.3% of child psychiatric patients, particularly those with intellectual or developmental delays. Early detection and genetic consultation are crucial for effective management.
Area of Science:
- Child and Adolescent Psychiatry
- Human Genetics
- Clinical Cytogenetics
Background:
- Child psychiatric populations exhibit a notable frequency of chromosomal abnormalities.
- Understanding these genetic variations is key to improving diagnostic accuracy and treatment strategies.
Purpose of the Study:
- To ascertain the prevalence of chromosomal abnormalities in children with psychiatric conditions.
- To explore correlations between specific chromosomal anomalies and clinical patient characteristics.
Main Methods:
- Cytogenetic examination (karyotyping) was conducted on 604 pediatric patients.
- Demographic data, clinical signs, and reasons for karyotyping were systematically collected and analyzed.
Main Results:
- Chromosomal abnormalities were identified in 11.3% of patients (69 out of 604).
- Structural abnormalities (49 cases) and numerical abnormalities (20 cases) were observed, with common findings including chromosome 9 inversion, trisomy 21, and fragile X syndrome.
- Higher abnormality rates were linked to intellectual impairment or developmental delay, while lower rates were associated with suspected autistic disorder.
Conclusions:
- Chromosomal abnormalities are prevalent in child psychiatric populations, necessitating clinical awareness.
- While most abnormalities showed no clinical variable differences, Down syndrome cases exhibited delayed walking and lower IQ.
- Enhanced collaboration with geneticists and refined cytogenetic investigation guidelines are recommended.