Related Experiment Videos
Decreased interferon production by leukocytes in marasmus
Abstract:
Interferon production by leukocytes in culture was investigated in nine severely marasmic infants and 31 well-nourished controls. The production of interferon was induced with Newcastle disease virus and assayed in Vero cells challenged with vesicular stomatitis virus. Marasmic infants produced significantly less interferon than controls. It is suggested that the finding may be the result of a lymphocyte defect induced by malnutrition and could help to explain the increased frequency and severity of viral diseases in this condition.
Insights
Severely malnourished infants produced significantly less interferon, a key immune protein, compared to well-nourished infants. This suggests malnutrition may impair immune responses, increasing susceptibility to viral infections.
Area of Science:
- Immunology
- Nutritional Science
- Virology
Background:
- Malnutrition is associated with increased susceptibility to infections, particularly viral diseases.
- The immune system's ability to combat viral infections relies on various components, including interferon production.
- Leukocyte function, crucial for immune responses, may be compromised in states of severe malnutrition.
Purpose of the Study:
- To investigate interferon production in leukocytes from severely marasmic infants.
- To compare interferon production in marasmic infants with that of well-nourished controls.
- To explore the potential link between impaired interferon production and increased viral disease severity in malnutrition.
Main Methods:
- Leukocytes were isolated from nine severely marasmic infants and 31 well-nourished control infants.
- Interferon production was induced using Newcastle disease virus.
- Interferon levels were quantified by assaying Vero cells challenged with vesicular stomatitis virus.
Main Results:
- Severely marasmic infants exhibited significantly lower interferon production compared to well-nourished controls.
- A notable difference in interferon output was observed between the two groups.
- The findings indicate a potential impairment in interferon-mediated immunity in marasmic infants.
Conclusions:
- Malnutrition, specifically severe marasmus, appears to induce a defect in lymphocyte interferon production.
- This defect may contribute to the heightened frequency and severity of viral infections observed in malnourished individuals.
- Restoring immune function through nutritional support could be crucial in managing viral infections in marasmic infants.