Research Article

Mammary Fat Can Adjust Prolactin Effect on Mammary Epithelial Cells via Leptin and Estrogen

Figure 2

Expression of aromatase mRNA in mammary fat explants and mammary primary culture. Expression of aromatase mRNA in fat explants (closed bars) and primary mammary cells (open bars) from a lactating cow, with various concentrations of prolactin (0.01, 0.1 and 1 mg mL-1) in the medium. The expression of aromatase in cultures of primary cells did not change significantly. Significant expression of aromatase was observed in fat explants at prolactin concentrations of 1 mg mL-1. Least squares means ± SE (n = 3). Bars with different letters differ at P < .05. *, ** means differing at P < .05 and P < .01, respectively, between treatments with mammary primary cells and fat explants.
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