A randomized cross-over comparison of two low-dose oral contraceptives upon hormonal and metabolic parameters: I. Effects upon sexual hormone levels.

@article{Kuhl1985ARC,
  title={A randomized cross-over comparison of two low-dose oral contraceptives upon hormonal and metabolic parameters: I. Effects upon sexual hormone levels.},
  author={Herbert Kuhl and Greggory M. Gahn and G. Romberg and Winfried M{\"a}rz and H. D. Taubert},
  journal={Contraception},
  year={1985},
  volume={31 6},
  pages={
          583-93
        }
}
Influence of two low-dose oral contraceptives on pulsatile gonadotropin secretion
TLDR
It is concluded that the pulsatile character of gonadotropin secretion is maintained at a low level during treatment with low-dose contraceptives and the effects of the monophasic combinations on gonadotropic pulsatility do not seem to depend on the amount of ethinyl estradiol they contain.
The effect of combined oral contraception on testosterone levels in healthy women: a systematic review and meta-analysis
TLDR
COCs decrease circulating levels of total T and free T and increase SBHG concentrations, and suppressive effects on T levels were not different when comparing different types of progestins.
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References

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Sensitivity changes of the pituitary during administration of a triphasic oral contraceptive
The effect of a triphasic, low-dosed combined oral contraceptive (TriquilarR) upon pituitary capacity and sensitivity towards hypothalamic releasing-hormones was investigated on nine healthy women
The effect of contraceptive steroids on hypothalamic-pituitary function.
PHARMACODYNAMIC STUDIES WITH A NEW PROGESTATIONAL SUBSTANCE ‐ ORG 2969 ‐ IN COMBINATION WITH ETHINYLOESTRADIOL
TLDR
Results suggested that all pretreatment cycles were ovulatory and all treatment cycles were anovulatory, and in the majority of patients the 1st post-treatment cycle was ovulatory.
Serum lipids and proteins during treatment with a new oral contraceptive combination containing desogestrel.
Plasma levels of adrenocorticotropin and cortisol in women receiving oral contraceptive steroid treatment.
TLDR
It was found that concentrations of ACTH and cortisol in plasma obtained from a group of women with normal cyclic menses ranged from 78--120 pg/ml and 77--137 ng/ml, respectively, and no obvious cyclic fluctuations in plasma levels of ACTh or cortisol were observed.
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