EFFECT OF PROGESTERONE ON HUMAN UTERUS
EFFECT OF PROGESTERONE ON HUMAN UTERUS
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DOI:
10.1073/pnas.54.4.1069
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发表时间:
1965-01-01
影响因子:
11.1
通讯作者:
PINTODAN.CA
中科院分区:
文献类型:
--
作者:
CSAPO, AI;PINTODAN.CA
DEPARTMENTS OF OBSTETRICS AND GYNECOLOGY, WASHINGTON UNIVERSITY SCHOOL OF MEDICINE, ST. LOUIS, AND THE UNIVERSITY OF BAHIA, BRAZIL Communicated by George W. Corner, August 18, 1965 Soon after Corner and Allen's discovery'of progesterone and the unique effect of this steroid on the maintenance of pregnancy in the rabbit, the question arose whether this hormone has a general role in regulating myometrial function in mammals and man. Recently the opinion2 has been expressed that progesterone has no effect on the human myometrium and that profound differences exist among various species in the regulation of uterine function in the maintenance and termination of pregnancy. This concept discouraged the search for a basic regulatory mechanism common to different species. It also encouraged the thought that superimposed modifications of this basic mechanism in different animals and man represent alternative mechanisms for the control of uterine activity. The debate was kept open, however, by the discovery of the progesterone block3 and by the proposal'that two extreme species, humans and rabbits, do not differ in their basic mechanism of uterine regulation, but in the relative contributions to the myometrial block of a local placental and a systemic ovarian progesterone effect. This view was not generally accepted. Endocrinologists insisted that the" progesterone theory" 4-6 is proved by the demonstration of a coincidence between progesterone withdrawal in the peripheral blood and the onset of labor. Clinicians, ourselves included, demanded proof that progesterone therapy extinguishes uterine activity and response to oxytocin and thus prolongs pregnancy. These demands were notfully justified, for in the progesterone theory a correlation was only predicted between myometrial progesterone concentration, the blocking effect, the character and magnitude of uterine activity, and clinical conditions. Furthermore, the theory7 of the" local" effect of placental progesterone stated explicitly that the endocrine and functional asymmetry of the human uterus may not be readily modified by systemic progesterone treatment, nor reflected by peripheral blood progesterone levels.