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Role of Prolactin or Placental Lactogen in Mammary Tumor Development in Experimental Animals

  • Hiroshi Nagasawa

Abstract

It is unequivocal that prolactin is a most important hormone in experimental mammary tumorigenesis. Besides prolactin acts directly on mammary glands, recent studies have evidenced that the hormone also participates in mammary tumor virus production and that some factors which influence mammary tumorigenesis, such as perinatal hormonal exposure, nutrition and immune mechanism, modulate the pituitary prolactin secretion. Placental lactogen is also shown to play a role similar to prolactin in mammary tumor development as well as in several biological phenomena. The primary objective of this chapter is to summarize a number of pertinent studies on these problems in experimental animals.

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© Eden Press Inc. 1982

Authors and Affiliations

  • Hiroshi Nagasawa

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