Summary
Immunogold labelling of prolactin in three different embedding media was compared. The polymeric prolactin in secretory granules was labelled in the three media, however, acrylic monomers (Lowicryl K4M and LR White) provided a more intense labelling with higher dilutions of the primary antibody, compared to the labelling in the epoxy resin (araldite). An intense labelling of monomeric prolactin in Golgi complex was detected only in acrylic embedments, and the labelling on the rough endoplasmic reticulum was significant only in LR White embedded tissues.
Similar content being viewed by others
References
CARLEMALM, E., GARAVITO, R. M. & VILLIGER, W. (1982) Resin development for electron microscopy and an analysis of embedding at low temperature.J. Microsc. 126 123–43.
FAULK, W. P. & TAYLOR, G. M. (1971) An immunogold method for the electron microscope.Immunochemistry 8 1081–3.
FRENS, G. (1973) Controlled nucleation for the regulation of the particle size in monodisperse gold solutions.Nat. Phys. Sci 241 20–2.
HISANO, S., ADACHI, T. & DAIKOKU, S. (1984) Immunolabeling of adenohypophysial cells with protein A-colloidal gold-antibody complex for electron microscopy: use of freeze-substitution technique in tissue preparation.J. Histochem. Cytochem. 32 705–11.
NAKANE, P. K. (1970) Classification of anterior pituitary cell types with immunoenzyme histochemistry.J. Histochem. Cytochem. 18 9–20.
NAKANE, P. K. (1975) Identification of anterior pituitary cells by immunoelectron microscopy. InThe Anterior Pituitary (edited by TIXIER-VIDAL, A. and FARQUHAR, M. G.), pp. 45–61. New York, San Francisco, London: Academic Press.
OSAMURA, R. Y., KOMATSU, N., IZUMI, S., YOSHIMURA, S. & WATANABE, K. (1982) Ultrastructural localization of prolactin in the rat anterior pituitary glands by preembedding peroxidase-labeled antibody method: observations in normal, castrated, or estrogen-stimulated specimen.J. Histochem. Cytochem. 30 919–25.
PARSONS, J. A. & ERLANDSEN, S. L. (1974) Ultrastructural immunocytochemical localization of prolactin in rat anterior pituitary by use of the unlabelled antibody enzyme method.J. Histochem. Cytochem. 22 340–51.
ROMANO, E. L. & ROMANO, M. (1977) Staphylococcal protein A bound to colloidal gold: a useful reagent to label antigen-antibody sites in electron microscopy.Immunochemistry 14 711–16.
ROTH, J., BENDAYAN, M. & ORCI, L. (1978) Ultrastructural localization of intracellular antigens by the use of protein A-gold complex.J. Histochem. Cytochem. 26 1074–81.
TORRES, A. I., HAGGI, E. S. & AOKI, A. (1984) Isolation of two different pools of pituitary prolactin.Acta Endocrinol. (Copenh) 107 25–30.
TORRES, A. I. & AOKI, A. (1985) Subcellular compartmentation of prolactin in rat lactotrophs.J. Endocrinol. 105 219–25.
TOUGARD, C., PICART, R. & TIXIER-VIDAL, A. (1982) Immunocytochemical localization of prolactin in the endoplasmic reticulum of GH3 cells. Variations in response to Thyroliberin.Biol. Cell 43 89–102.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Maldonado, C.A., Aoki, A. Influence of embedding media in prolactin labelling with immunogold techniques. Histochem J 18, 429–433 (1986). https://doi.org/10.1007/BF01675335
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01675335