Cyclic AMP as a negative regulator of hormonally induced lactogenesis in mouse mammary gland organ culture.

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Cyclic AMP as a negative regulator of hormonally induced lactogenesis in mouse mammary gland organ culture.

In organ cultures of mammary glands from mice in midpregnancy, addition of both insulin and prolactin induces a marked accumulation of alpha-lactalbumin, whereas the augmentation of casein synthesis requires the presence of insulin, prolactin, and cortisol. Addition of 0.5 mM dibutyryl cyclic AMP resulted in complete inhibition of alpha-lactalbumin accumulation and partial inhibition of casein ...

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Involvement of collagen formation in the hormonally induced functional differentiation of mouse mammary gland in organ culture.

In mammary gland organ culture from midpregnant mice, synergistic actions of insulin, cortisol, and prolactin stimulate differentiation of mammary epithelium and induce the synthesis of the milk proteins casein and alpha-lactalbumin. In the present study we examined the production of collagen and its function in the hormone-dependent development of mammary gland in vitro. The measurement of col...

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We have developed a mouse model of diet-induced obesity that shows numerous abnormalities relating to mammary gland function. Animals ate approximately 40% more calories when offered a high-fat diet and gained weight at three times the rate of controls. They exhibited reduced conception rates, increased peripartum pup mortality, and impaired lactogenesis. The impairment of lactogenesis involved...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 1980

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.77.4.2093