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Intrauterine Drug Delivery Systems01:21

Intrauterine Drug Delivery Systems

Controlled-release systems for intravaginal and intrauterine drug delivery have been developed primarily for the administration of contraceptive steroid hormones. These delivery routes circumvent first-pass hepatic metabolism, thereby enhancing bioavailability and allowing for reduced systemic dosages compared to oral administration. Such approaches contribute to improved therapeutic efficacy and patient compliance, particularly in long-term contraceptive regimens.Intravaginal Drug Delivery...
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Prostacyclin receptor agonists are a class of therapeutic agents integral to managing pulmonary arterial hypertension (PAH). These drugs operate by mimicking the action of prostaglandin I2, or PGI2, a naturally occurring compound in the body.
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Gonadal and Placental Hormones

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Hormonal Regulation of the Menstrual Cycle01:22

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Hormonal Control of the Ovarian Cycle

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An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
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[Progestogens].

Minoru Irahara1, Toshiya Matsuzaki, Akira Kuwahara

  • 1Department of Obstetrics and Gynecology, Institute of Health Bioscience, The University of Tokushima Graduate School.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|January 15, 2008
PubMed
Summary

Progestogens are crucial steroid hormones supporting pregnancy, with compounded versions offering diverse clinical applications beyond progesterone effects. These synthetic hormones are vital in treating ovulation disorders, contraception, endometriosis, and hormone replacement therapy.

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Area of Science:

  • Endocrinology
  • Reproductive Biology
  • Pharmacology

Context:

  • Progestogens are essential steroid hormones naturally produced by the ovary and placenta to support pregnancy.
  • Since the 1930s, numerous synthetic progestogens have been developed for clinical applications.
  • Compounded progestogens exhibit a range of effects, including progesterone, estrogen, androgen, and corticosteroid activities.

Purpose:

  • To summarize the multifaceted roles and clinical applications of progestogens.
  • To highlight the evolution and diverse effects of compounded progestogens.
  • To underscore the significance of progestogens in modern medicine.

Summary:

  • Progestogens are critical steroid hormones for pregnancy maintenance, secreted by the ovary and placenta.
  • Synthetic progestogens, developed since the 1930s, possess varied hormonal activities beyond progesterone.
  • Clinical uses include treating ovulation disorders, contraception, endometriosis management, and hormone replacement therapy.

Impact:

  • Provides a foundational understanding of progestogen functions and therapeutic uses.
  • Emphasizes the broad pharmacological profile of synthetic progestogens.
  • Highlights the ongoing importance of progestogens in gynecological and endocrine treatments.