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- W2023494088 abstract "Principle cells from 120 elutriations were used to improve procedures for culturing cells from the proximal or distal caput epididymidis. The criteria evaluated were metabolism of testosterone (T) to 5α-reduced metabolites and cellular morphology after 6 days of culture. Isolated principal cells (>90% viability) were cultured at 34°C within a floating collagen matrix. Inclusion of transferrin or retinol in the culture medium increased the production of 5α-reduced metabolites. Aggregation of principal cells before entrapment in the collagen matrix resulted in higher production of 5α-reduced metabolites and more cells with a normal find structure than entrapment of dispersed cells in the matrix. Aggregated cells tended to form sheets or clusters, frequently arranged around a central lumen, with junctional complexes between adjacent cells. Cell polarity and morphologic features distinguishing principal cells from the proximal caput and distal caput epididymidis were retained. An average of 91% of the cells in aggregates were morphologically normal on Day 6 of culture in contrast to 5% for the single cells. Utilizing the improved culture procedure, we tested the hypothesis that ovine rete testis fluid (RTF) contains macromolecules which would aid in maintenance of a high rate of T metabolism. Principal cells were cultured in medium supplemented with 0 or 10% RTF, 10% ultrafiltrate of RTF (<10,000 daltons), or 10% newborn calf serum (NCS). Conversion of [3H]T to 5α-reduced metabolites by cells from the proximal caput was twice that in cells from the distal caput on Day 6 of culture. Inclusion in the culture medium of 10% RTF or 10% NCS, but not 10% ultrafiltrate of RTF, increased (P<0.05) the production of 5α-reduced metabolites by cells from both regions. We conclude that macromolecules in RTF or NCS are beneficial to maintenance of the ability to metabolize T by cultured principal cells, especially those from the proximal caput." @default.
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- W2023494088 date "1983-06-01" @default.
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- W2023494088 title "Influence of Rete Testis Fluid on the Metabolism of Testosterone by Cultured Principal Cells Isolated from the Proximal or Distal Caput of the Rat Epididymis" @default.
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- W2023494088 doi "https://doi.org/10.1095/biolreprod28.5.1257" @default.
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