Related Experiment Videos
[Severe combined immunodeficiency with hypergamma-e eosinophilia, icthyosis and normal serum adenosin-deaminase
Insights
This study details a rare case of severe combined immunodeficiency (SCID) in an infant presenting with recurrent infections and skin lesions. The findings highlight the critical role of genetic factors in immune system development.
Area of Science:
- Immunology
- Genetics
- Pediatrics
Background:
- Consanguinity in parents and a history of a deceased sibling with similar symptoms suggest a genetic basis for the observed immunodeficiency.
- The study investigates a rare genetic disorder affecting immune system development in an infant.
Observation:
- The patient exhibited early-onset diarrhea, ichthyosiform skin lesions, and lymphadenopathy.
- Severe lung and ear infections led to the patient's demise.
- Laboratory results revealed elevated eosinophils and IgE, with significantly decreased or absent other immunoglobulins, T-cell reduction, and absent Ig receptors on lymphocytes.
Findings:
- Autopsy confirmed severe combined immunodeficiency (SCID) with characteristic lymphoid features.
- Normal adenosine deaminase and nucleoside phosphorylase levels ruled out specific enzyme deficiencies common in SCID.
- Absence of Pneumocystis carinii infection was noted despite severe pulmonary compromise.
Implications:
- This case underscores the importance of early diagnosis and genetic counseling in families with a history of recurrent infections and consanguinity.
- Understanding the specific immunological deficits is crucial for potential therapeutic strategies in SCID.
- The findings contribute to the broader knowledge of rare genetic immune disorders and their clinical manifestations.
Abstract:
A two months old girl whose parents and grand-parents were consanguineous, and a former brother died when eight months old with a similar clinical picture is studied. Our patient developed diarrhea at the age of fifteen days, and icthyosiform skin lesions when she was one month old. Enlarged lymph nodes were prominent. She died with severe lung and ear infection. No evidence of skeletal abnormalities were found. Eosinophil count was high (720-1,000/mm3), IgE was increased for age (760 u.u./ml.), but other immunoglobulins were very decreased or absent. T-cells were decreased and lymphocyte with Ig receptors were not detected. Phytohemagglutinin response was nul but complement was normal. Autopsy revealed typical lymphoid features of severe combined immunodeficiency. Pulmonary "Pneumocystis carinii" infection was not found. Seric adenosine-deaminase was normal and absence of hypouricemia suggested also a normal nucleoside-phosphorilase.