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Related Experiment Videos

Primary lymph node responses to mosquito bites

J J Mellink, B J Vos

    Zeitschrift Fur Parasitenkunde (Berlin, Germany)
    |March 29, 1977
    PubMed
    Summary

    Mosquito bites from Aedes aegypti trigger immune responses in the lymph nodes of hamsters and mice. These responses indicate both cell-mediated immunity and antibody production, suggesting specific immunological reactions to the bites.

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    Estimation of the amount of Venezuelan equine encephalomyelitis virus transmitted by a single infected Aedes aegypti (Diptera: Culicidae).

    Journal of medical entomology·1982

    Area of Science:

    • Immunology
    • Entomology
    • Comparative Pathology

    Background:

    • Mosquito bites can elicit immune responses in mammalian hosts.
    • Understanding the specific immune mechanisms triggered by Aedes aegypti bites is crucial for public health.
    • Previous studies have not fully elucidated the quantitative immune reactions following Aedes aegypti exposure.

    Purpose of the Study:

    • To quantitatively assess post-auricular lymph node responses in hamsters and mice after Aedes aegypti bites.
    • To investigate changes in thymus and spleen fresh weight as indicators of systemic immune reactions.
    • To determine the temporal relationship between cell-mediated and humoral immune responses.

    Main Methods:

    • Exposure of hamsters and mice to 20 bites from Aedes aegypti on both ears.
    • Quantitative analysis of post-auricular lymph node changes at 4 and 8 days post-exposure.
    • Measurement of fresh weight changes in thymus and spleen.

    Main Results:

    • Both hamsters and mice exhibited lymph node changes indicative of cell-mediated immunity and antibody production.
    • Humoral immune responses were more pronounced in mice, potentially due to higher effective dosages.
    • No significant reactions were observed in the thymus or spleen of either species.

    Conclusions:

    • Aedes aegypti bites induce specific immunological responses in the lymph nodes of both hamsters and mice.
    • The observed responses suggest a dual immune activation, emphasizing humoral sensitization.
    • Temporal correlations between cell-mediated and humoral responses varied between hamsters and mice.

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