Pediatric research · 2021
Children with Down syndrome: association of Bcl-I polymorphism of nuclear receptor subfamily 3 group C member 1 gene with obesity.
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Abo El-Fotoh Wafaa Moustafa M, Bahbah Hebatallah Mohammed Nasser, Elaithy Manal Abd El-Monem, Ahmed Rana Khairy Rashad, Bayomy Noha Rabie
Аннотация
BACKROUND: This study aimed to assess the possible association between rs41423247 (Bcl-I) polymorphism in the gene for the human glucocorticoid receptor (GR) called Nuclear Receptor Subfamily 3 Group C Member 1 (NR3C1) with obesity in Egyptian children with and without Down syndrome.
METHODS: The Bcl-I polymorphism was assessed, using real-time PCR, in 300 children divided into four groups: Down-obese, Down-non obese, normal-obese, and normal non-obese.
RESULTS: There was no significant difference between normal-obese and normal-non obese children regarding the Bcl-I genotypes and allele frequencies, while there was a significant difference between Down-obese and Down-non obese children regarding the Bcl-I GC genotype frequency. Again, there was a highly significant difference between Down-obese and normal-non obese children and between children with Down-syndrome (obese and non-obese) and normal children (obese and non-obese) regarding the Bcl-I genotypes and alleles frequencies.
CONCLUSIONS: Our study found a weak association of the G allele of Bcl-I rs41423247 with the presence of obesity among normal Egyptian children, while there was a significant association of the mutant C allele of the Bcl-I rs41423247 with Down syndrome, suggesting a possible association with Down syndrome pathophysiology.
IMPACT: Bcl-I polymorphism is not strikingly associated with obesity in normal children. The GG genotype is higher in obese normal children but without significant difference. The significant increase of the mutant C allele in Down-children than normal children. This may be relevant to Down syndrome's pathophysiology which disturbs the whole genome's balance.
METHODS: The Bcl-I polymorphism was assessed, using real-time PCR, in 300 children divided into four groups: Down-obese, Down-non obese, normal-obese, and normal non-obese.
RESULTS: There was no significant difference between normal-obese and normal-non obese children regarding the Bcl-I genotypes and allele frequencies, while there was a significant difference between Down-obese and Down-non obese children regarding the Bcl-I GC genotype frequency. Again, there was a highly significant difference between Down-obese and normal-non obese children and between children with Down-syndrome (obese and non-obese) and normal children (obese and non-obese) regarding the Bcl-I genotypes and alleles frequencies.
CONCLUSIONS: Our study found a weak association of the G allele of Bcl-I rs41423247 with the presence of obesity among normal Egyptian children, while there was a significant association of the mutant C allele of the Bcl-I rs41423247 with Down syndrome, suggesting a possible association with Down syndrome pathophysiology.
IMPACT: Bcl-I polymorphism is not strikingly associated with obesity in normal children. The GG genotype is higher in obese normal children but without significant difference. The significant increase of the mutant C allele in Down-children than normal children. This may be relevant to Down syndrome's pathophysiology which disturbs the whole genome's balance.