Summary
Locust lipoproteins (lipophorins) were localized by indirect immunofluorescence- and immunogold labelling in cryosections of dorsolongitudinal flight muscles. Immunolabelling was performed with monoclonal antibodies against apolipoprotein epitopes that are exposed at the surfaces of the lipophorin particles. Both at rest and during flight, lipophorins were located only in the wider spaces of the extracellular matrix, in the basement membranes of the individual muscle fibers and in the extracellular spaces that surround interfibrillar tracheoles. No internalization of lipophorins by the flight muscle cells was observed. Our results indicate that the unloading of lipophorins at the flight muscles is an extracellular event. Similarities with the vertebrate system of chylomicron and very-low-density lipoprotein degradation are discussed.
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Van Antwerpen, R., Linnemans, W.A.M., Van der Horst, D.J. et al. Immunocytochemical localization of lipophorins in the flight muscles of the migratory locust (Locusts migratoria) at rest and during flight. Cell Tissue Res. 252, 661–668 (1988). https://doi.org/10.1007/BF00216654
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DOI: https://doi.org/10.1007/BF00216654