Application of the immunofluorescence technique and confocal laser scanning microscopy for studying the distribution of the luteinizing hormone/chorionic gonadotropin (LH/CG) receptor on rat luteal cellsJT Lakkakorpi and HJ Rajaniemi Biocenter University of Oulu, Finland. We used confocal scanning microscopy to study the semi-quantitative distribution of luteinizing hormone/chorionic gonadotropin (LH/CG) receptors on rat luteal cells at both the two- and the three- dimensional level. The receptors were visualized in 6-microns sections of pseudopregnant rat ovaries using polyclonal rabbit antiserum to hCG- affinity-purified LH/CG receptor in conjunction with rhodamine- conjugated anti-rabbit immunoglobulins. Twenty to 30 optical sections were taken at different focal planes from representative luteal cells with a confocal laser scanning microscope and then processed digitally to two- and three-dimensional pseudocolored images. Distinct differences in fluorescence intensity could be demonstrated at both the two- and the three-dimensional level on the luteal cell surfaces, suggesting an uneven distribution of the LH/CG receptors on the cell membranes. This probably results in the compartmentalization and polarization of luteal cell function.
Volume 39,
Issue 4,
pp. 397-400,
04/01/1991
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T. J. Puranen, R. M. Kurkela, J. T. Lakkakorpi, M. H. Poutanen, P. V. Itäranta, J. P. J. Melis, D. Ghosh, R. K. Vihko, and P. T. Vihko Characterization of Molecular and Catalytic Properties of Intact and Truncated Human 17{beta}-Hydroxysteroid Dehydrogenase Type 2 Enzymes: Intracellular Localization of the Wild-Type Enzyme in the Endoplasmic Reticulum Endocrinology, July 1, 1999; 140(7): 3334 - 3341. [Abstract] [Full Text] |
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