Related Experiment Videos
[Diffuse panbronchiolitis in two brothers with different clinical courses]
K Makiguchi1, H Sakaino, N Yoshimura
1Second Department of Internal Medicine, Faculty of Medicine, Tokyo Medical and Dental University, Japan.
Abstract:
Diffuse panbronchiolitis in two brothers is reported. The elder brother aged 46, was admitted in May 1983 due to severe dyspnea and productive cough, which had gradually worsened over several years. He had severe hypoxemia and hypercapnia. He died at age 47 of respiratory failure due to pseudomonas infection despite antibiotic therapy. The younger brother, at age 41, was admitted in March 1983 due to fever, productive cough, and abnormal shadows on chest X-ray films. He showed mild hypoxemia and his symptoms improved with antibiotic treatment. Since then he has been followed as an outpatient for over 7 years while taking 400 mg of Erythromycin per day, and he has had no exacerbation. These two cases had different clinical courses despite the facts that both had similar conditions of chronic sinusitis and appeared to be exposed to no special environmental or occupational hazards. These facts suggest that not only intrinsic factors, such as defenselessness of airways, but extrinsic factors such as viral, mycoplasmal, or bacterial infection may act together on the mechanisms of the onset and progression of diffuse panbronchiolitis.
Insights
Diffuse panbronchiolitis presents differently in siblings. One brother died from respiratory failure, while the other improved with erythromycin, suggesting varied disease progression factors.
Area of Science:
- Pulmonology
- Genetics
- Infectious Diseases
Background:
- Diffuse panbronchiolitis (DPB) is a chronic airway inflammatory disease.
- Familial occurrence of DPB suggests potential genetic predispositions.
- Understanding DPB's multifactorial etiology is crucial for effective management.
Observation:
- Two brothers with chronic sinusitis presented with differing DPB severity and clinical courses.
- The elder brother experienced severe respiratory failure and succumbed to Pseudomonas infection.
- The younger brother showed milder symptoms, responded to antibiotics, and maintained stability on long-term erythromycin.
Findings:
- Clinical outcomes in DPB can vary significantly, even within affected families.
- Intrinsic airway factors and extrinsic triggers (infections) likely interact in DPB pathogenesis.
- Long-term macrolide therapy may be beneficial in managing DPB exacerbations.
Implications:
- DPB's variable progression highlights the need for personalized treatment strategies.
- Further research into genetic and environmental interactions in DPB is warranted.
- Early diagnosis and intervention may improve patient prognosis in diffuse panbronchiolitis.