Prolactin-induced mammary carcinogenesis in rodents, particularly rats, is often stated to be of low toxicological relevance to humans. This opinion appears to have developed from a number of lines of cited evidence. Firstly, there had been long experience of use of dopamine antagonists (that increa
Prolactin and mammary gland carcinogenesis. The problem of human prolactin
β Scribed by L. M. Boot
- Publisher
- John Wiley and Sons
- Year
- 1970
- Tongue
- French
- Weight
- 813 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0020-7136
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The ultimate objective of experimental cancer research must be to apply the findings obtained to the prevention or treatment of the disease in humans. In this review it is shown that prolactin is suspected of being one of the hormones mainly responsible for the development of mammary carcinoma in mice. Investigations into the question of whether this might also be true in man are hampered by the fact that the existence of prolactin in this species is still a matter of debate. Because of the intrinsic prolactinβlike activity of purified human growth hormone, the need for the presence of prolactin as a separate hormone might be questioned. It is shown, however, on the basis of a number of biological arguments and clinical observations, that it is extremely unlikely that all prolactinβlike effects in man are due to one of the manifold activities of growth hormone alone; consequently the urgent need to analyse the role of prolactin as a separate hormone in man becomes evident, especially in the field of breast cancer. Tentatively, ways are indicated by which this objective might be reached.
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Prolactin deficiency, induced by bromocryptine treatment, brought about reciprocal changes in the ability of adipocytes and acini isolated from lactating rats to synthesize lipids. The capacity to synthesize fatty acids and phospholipids decreased in the mammary gland and increased in adipocytes by
## ABSTRACT The commonly held assumption that rodent mammary tumors resulting from elevated prolactin are speciesβspecific, or not biologically relevant to humans, is incorrect. Substantial epidemiological, clinical, and biological evidence now exists confirming the role of prolactin in human breas