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Related Concept Videos

Infertility in Females01:28

Infertility in Females

Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
Endometriosis, a condition characterized by abnormal growth of endometrial...
Infertility in Males01:23

Infertility in Males

Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists01:28

Drugs Affecting GI Tract Motility: Dopamine Receptor Antagonists

Prokinetic agents are specialized medications that stimulate gastrointestinal (GI) motility, promoting food movement through the GI tract. Dopamine, an inhibitory neurotransmitter, plays a significant role in this process, reducing GI motility and indirectly controlling the speed of digestion. Dopamine receptor antagonists, such as metoclopramide and domperidone, offer a unique advantage as prokinetic agents. By blocking the dopamine receptors, these drugs increase GI motility, improving food...
Major Hormones and Their Functions01:27

Major Hormones and Their Functions

Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and lactation.
Hypothyroidism II: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

Hypothyroidism is a disorder characterized by insufficient production of thyroid hormones, which regulate metabolism, energy balance, and multiple organ systems.TypesHypothyroidism is classified based on the level of dysfunction. Primary hypothyroidism results from intrinsic thyroid gland dysfunction, causing reduced hormone production despite normal or increased stimulation. Secondary hypothyroidism arises from inadequate thyroid-stimulating hormone (TSH) secretion by the pituitary. Tertiary...
Hormones of the Pituitary Gland01:27

Hormones of the Pituitary Gland

The small, pea-sized pituitary gland is located at the base of the brain. It is crucial in regulating various bodily functions, from growth to reproduction. The gland is divided into the anterior lobe and the posterior lobe. The secretory cell clusters in the pars distalis of the anterior pituitary lobe are controlled by hypothalamic regulators and synthesize six primary hormones.
The most abundantly secreted hormone from the anterior lobe is the growth hormone, which controls overall growth by...

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Related Experiment Video

Updated: May 27, 2026

X-Ray Visualization of Intraductal Ethanol-Based Ablative Treatment for Prevention of Breast Cancer in Rat Models
12:57

X-Ray Visualization of Intraductal Ethanol-Based Ablative Treatment for Prevention of Breast Cancer in Rat Models

Published on: December 9, 2022

Hyperprolactinemia and infertility.

Amal Shibli-Rahhal1, Janet Schlechte

  • 1Division of Endocrinology and Metabolism, Department of Internal Medicine, University of Iowa, Iowa City, USA.

Endocrinology and Metabolism Clinics of North America
|November 24, 2011
PubMed
Summary
This summary is machine-generated.

Dopamine agonists are the preferred treatment for prolactin-secreting pituitary tumors, effectively normalizing prolactin levels and restoring fertility in premenopausal women. Tumor enlargement during pregnancy is rare, influenced by initial tumor size and prior treatment.

Related Experiment Videos

Last Updated: May 27, 2026

X-Ray Visualization of Intraductal Ethanol-Based Ablative Treatment for Prevention of Breast Cancer in Rat Models
12:57

X-Ray Visualization of Intraductal Ethanol-Based Ablative Treatment for Prevention of Breast Cancer in Rat Models

Published on: December 9, 2022

Area of Science:

  • Endocrinology
  • Reproductive Medicine
  • Oncology

Background:

  • Prolactin-secreting pituitary tumors (prolactinomas) are a frequent cause of menstrual dysfunction and infertility in women of reproductive age.
  • These tumors lead to hyperprolactinemia, disrupting the hypothalamic-pituitary-gonadal axis.
  • Effective management is crucial for restoring reproductive health and preventing complications.

Purpose of the Study:

  • To outline the therapeutic goals for prolactinomas: normalizing prolactin levels, restoring gonadal function and fertility, and reducing tumor mass.
  • To emphasize dopamine agonists as the primary pharmacological treatment.
  • To assess the risk and influencing factors of tumor enlargement during pregnancy.

Main Methods:

  • Review of current clinical guidelines and relevant literature on prolactinoma management.
  • Analysis of data regarding the efficacy of dopamine agonists in normalizing prolactin and restoring fertility.
  • Evaluation of the incidence and predictors of pituitary tumor growth during gestation.

Main Results:

  • Dopamine agonists are highly effective in achieving biochemical and clinical remission in most patients.
  • Restoration of normal prolactin levels typically leads to the return of ovulation and fertility.
  • Clinically significant pituitary tumor enlargement during pregnancy is infrequent, with larger pre-pregnancy tumor size and lack of pre-treatment being key risk factors.

Conclusions:

  • Dopamine agonist therapy is the cornerstone for managing prolactin-secreting pituitary tumors, offering excellent outcomes for fertility and tumor control.
  • While pregnancy can occur during treatment, careful monitoring is advised, particularly for women with larger tumors or those not pre-treated.
  • The overall prognosis for women with prolactinomas is favorable with appropriate medical management.