Related Experiment Videos
Immunological profile in congenital heart disease
Insights
Congenital heart disease (CHD) in children significantly alters immune profiles. Key findings show reduced IgG and IgA, altered IgM, and T-cell imbalances, particularly in cyanotic cases.
Area of Science:
- Pediatric Cardiology
- Immunology
- Congenital Heart Disease Research
Background:
- Congenital heart disease (CHD) encompasses structural abnormalities present at birth.
- Immune system dysregulation is increasingly recognized as a factor in CHD.
- Understanding these immune changes is crucial for managing pediatric cardiac patients.
Purpose of the Study:
- To investigate the detailed immune profile of children diagnosed with congenital heart disease.
- To compare immune parameters between cyanotic and acyanotic CHD groups.
- To identify specific immunoglobulin, complement, and lymphocyte subset alterations in pediatric CHD.
Main Methods:
- Survey of immune profiles in 50 children with established congenital heart disease (CHD).
- Analysis included immunoglobulin levels (IgG, IgA, IgM), complement factors (C3, C4), and lymphocyte subsets (T-helper, T-suppressor, B-cells).
- Comparison of immune markers between CHD patients and control groups, and between cyanotic and acyanotic subgroups.
Main Results:
- Significantly reduced IgG and IgA levels were observed in all CHD patients.
- Increased IgM levels were noted in cyanotic CHD, while acyanotic groups showed no change.
- Complement C3 and C4 levels were reduced in all CHD cases, more pronounced in cyanotic patients.
- T-helper cells decreased, and T-suppressor cells increased across all CHD groups.
- B-cell percentage increased in cyanotic CHD but remained unchanged in acyanotic CHD.
Conclusions:
- Children with congenital heart disease exhibit distinct immune system alterations.
- Specific patterns of immunoglobulin and T-cell changes are associated with cyanotic versus acyanotic conditions.
- These findings highlight the immunomodulatory impact of CHD and suggest potential therapeutic targets.
Abstract:
Fifty children with established congenital heart disease (CHD) were surveyed for the immune profile. Ventricular septal defect (VSD) was the commonest lesion (56%) followed by Tetralogy of Fallot (ToF; 16%), atrial septal defect (ASD; 8%), patent ductus arteriosus (PDA; 4%), transposition of great arteries (TGA; 4%), aortic stenosis (AS; 4%), and pulmonic stenosis (PS), tricuspid atresia (TA), single ventricle with pulmonic stenosis (SV with PS) and dextrocardia with ToF (2% each). Immunoglobulins (IgG, IgA and IgM) were estimated. IgG and IgA levels were significantly reduced in all children with congenital heart disease, whereas IgM levels were increased in cyanotic but unaffected in the acyanotic group. Complement C3 and C4 levels were reduced in all, more so in cyanotics. T-helper cells were decreased and T-suppressor cells were increased in all groups with congenital heart disease as compared to controls. B-cell percentage was increased in cyanotics but not affected in the acyanotics.