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The genetic basis of inherited primary nocturnal enuresis: A UAE study
Riad A Bayoumi1, Valsamma Eapen, Saeed Al-Yahyaee
1College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman. bayoumi@squ.edu.om
Insights
Genetic factors strongly influence primary nocturnal enuresis (PNE). This study investigated PNE genetics in UAE children but found no linkage to previously identified loci on chromosomes 12 and 13, suggesting genetic heterogeneity.
Area of Science:
- Genetics
- Pediatrics
- Urology
Background:
- Primary nocturnal enuresis (PNE) is involuntary urination in children aged 5+ without organic cause.
- Strong genetic factors are implicated, with ~75% of cases showing a family history.
- Understanding the genetic basis of PNE is crucial for effective management.
Purpose of the Study:
- To investigate the genetic underpinnings of primary nocturnal enuresis (PNE) in children from the United Arab Emirates (UAE).
- To examine potential linkage of PNE to specific chromosomal regions previously associated with the condition.
Main Methods:
- Genotyping of chromosomes 12 and 13 was performed in family members of 10 children with PNE across four large families.
- Linkage analysis was conducted using previously reported microsatellite markers on chromosomes 12 and 13.
Main Results:
- No evidence of linkage was found between PNE and the targeted loci on chromosomes 12 and 13 in the studied UAE families.
- The findings did not support the previously reported genetic associations in this specific population.
Conclusions:
- The study indicates no linkage between PNE and the investigated loci on chromosomes 12 and 13 in UAE children.
- This suggests significant genetic heterogeneity in primary nocturnal enuresis, necessitating further research into other genetic factors and populations.
Objective:
Nocturnal enuresis is defined as involuntary emptying of the bladder in the absence of an organic cause in a child aged 5 years or older. Primary nocturnal enuresis (PNE) is the term used if the child has never been dry. Of several factors implicated in the etiology of PNE, genetic factors appear to be the strongest. In about 75% of affected children, there is a strong family history. The purpose of this study was to examine the genetic basis of nocturnal enuresis among children in the United Arab Emirates (UAE).
Methods:
Chromosomes 12 and 13 were genotyped in all family members of 10 affected children in four large families. Linkage to earlier reported microsatellite markers on these two chromosomes was examined.
Results:
In the four families examined, we did not find evidence for linkage to the two loci reported previously.
Conclusions:
Among UAE children examined, no linkage was found between PNE and the loci reported previously on chromosomes 12 and 13, indicating further genetic heterogeneity in PNE.
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