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Chronic granulomatous disease in three siblings
Insights
This study describes a family with three siblings diagnosed with chronic granulomatous disease (CGD). The findings suggest a recessive inheritance pattern for this immunodeficiency disorder.
Area of Science:
- Immunology
- Genetics
- Pediatrics
Background:
- Chronic granulomatous disease (CGD) is a primary immunodeficiency characterized by defective neutrophil function.
- Recurrent severe infections are a hallmark of CGD, impacting multiple organ systems.
Observation:
- A family of seven was studied, identifying three affected siblings (one male, two female) with CGD.
- Affected individuals presented with severe, recurrent infections including liver abscesses, pneumonia, and lymphadenitis.
- Diagnostic criteria included characteristic histopathology, deficient nitroblue tetrazolium (NBT) reduction, and impaired neutrophil killing of Staphylococcus aureus.
Findings:
- The affected siblings exhibited significant susceptibility to bacterial and fungal infections.
- The proband, an affected boy, experienced severe liver abscesses.
- Genetic analysis of the family suggested a recessive mode of inheritance for CGD.
Implications:
- Understanding the inheritance pattern of CGD is crucial for genetic counseling and family planning.
- Early diagnosis and appropriate management, including antimicrobial therapy and surgical intervention, are vital for improving outcomes in CGD patients.
- This case highlights the importance of comprehensive diagnostic workup for recurrent infections to identify primary immunodeficiencies.
Abstract:
A family of 7 persons is described in which one male and two female siblings have chronic granulomatous disease (CGD). The CGD diagnosis was established by histories of recurring infections, typical histopathology, deficient nitroblue tetrazolium (NBT) reduction and deficient neutrophil killing of Staphylococcus aureus. Noteworthy infections were liver abscesses, pneumonia, pleurisy, lymphadenitis, skin pustules, urinary tract infection and dental abscesses. The affected boy was the most severely ill with liver abscesses. One sister also had liver abscesses with Staph. aureus and both were treated with cloxacillin in combination with fucidin and surgical intervention. A survey of the closest relatives with the NBT test disclosed no further cases. In this family in the heredity seems to be of the recessive type.