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Related Experiment Videos

T-cryptantigen exposure in neonatal necrotizing enterocolitis.

R L Klein, R W Novak, P E Novak

    Journal of Pediatric Surgery
    |December 1, 1986
    PubMed
    Summary

    Necrotizing enterocolitis in infants can expose Thomson-Friedenreich cryptantigen (TCA) on red blood cells. TCA exposure is linked to increased surgery rates, intestinal perforations, and Clostridium infections, impacting infant treatment.

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    Area of Science:

    • Neonatalogy
    • Immunology
    • Microbiology

    Background:

    • Necrotizing enterocolitis (NEC) is a severe gastrointestinal disease in premature infants.
    • The Thomson-Friedenreich cryptantigen (TCA) can be exposed on red blood cells (RBCs) via bacterial neuraminidase activity.
    • RBC surface antigen exposure may correlate with NEC severity and complications.

    Purpose of the Study:

    • To investigate the prevalence and clinical significance of red cell Thomson-Friedenreich cryptantigen (TCA) exposure in infants with necrotizing enterocolitis (NEC).
    • To assess the association between TCA exposure and NEC severity, surgical intervention, and microbial findings.
    • To evaluate the implications of TCA exposure on transfusion practices and patient management.

    Main Methods:

    • Prospective evaluation of 62 infants diagnosed with necrotizing enterocolitis.
    • Detection of red cell TCA exposure using a simple peanut lectin agglutination assay.
    • Correlation analysis of TCA exposure with clinical outcomes, surgical necessity, microbial cultures, and transfusion reactions.

    Main Results:

    • Red cell TCA exposure was detected in 17 out of 62 infants (27%).
    • TCA-exposed infants required surgery significantly more often (76% vs. 18%, P < .01) and had higher rates of intestinal perforations.
    • Clostridia species, including Clostridium perfringens, were frequently cultured (88%) from TCA-exposed patients, correlating with advanced disease.
    • Hemolysis occurred in TCA-exposed infants receiving plasma-containing blood products due to naturally occurring anti-TCA antibodies.

    Conclusions:

    • Red cell TCA exposure is a significant finding in infants with necrotizing enterocolitis, indicating a higher risk for surgical intervention and intestinal perforation.
    • The presence of TCA exposure necessitates specific management strategies, including targeted antibiotic therapy against anaerobic organisms and avoidance of plasma-containing blood products.
    • Washed blood products are recommended for transfusions in TCA-exposed infants to prevent hemolysis.
    • TCA exposure serves as a critical prognostic marker, alerting clinicians to the potential need for early surgical evaluation.

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