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Related Concept Videos

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...
The Pituitary Gland01:17

The Pituitary Gland

The pituitary is a small endocrine organ in the sphenoid bone under the hypothalamus. Primarily, the pituitary in adults has two distinct anatomical and functional regions— the anterior and posterior lobes. During human fetal development, a third pituitary gland region called the pars intermedia atrophies and disappears. However, some of its cells migrate and exist adjacent to the anterior pituitary in adults.
Cushing Syndrome II: Pathophysiology01:19

Cushing Syndrome II: Pathophysiology

Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features of the...
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.
Cushing Syndrome I: Introduction01:26

Cushing Syndrome I: Introduction

Cushing syndrome refers to the collection of clinical manifestations that arise when tissues are exposed to excessive amounts of cortisol or cortisol-like medications over an extended period. Cortisol, a glucocorticoid produced by the adrenal cortex, regulates metabolism, immune responses, and the body’s adaptation to stress. When its concentration remains chronically elevated, these physiological pathways become dysregulated, resulting in the characteristic features of the syndrome.Exogenous...
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...

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Update in prolactinomas.

M Kars1, O M Dekkers, A M Pereira

  • 1Department of Internal Medicine, Division of Geriatrics and Nutritional Science, Washington University School of Medicine, St Louis, MO, USA. marleenkars@hotmail.com

The Netherlands Journal of Medicine
|March 24, 2010
PubMed
Summary
This summary is machine-generated.

Dopamine agonists effectively treat prolactinomas, but challenges like recurrence, potential cardiac risks, pregnancy effects, and quality of life issues persist. Long-term monitoring is essential for managing these pituitary tumors.

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Area of Science:

  • Endocrinology
  • Neuro-oncology
  • Reproductive Medicine

Background:

  • Prolactinomas are common pituitary tumors causing gonadal dysfunction and infertility, particularly in women.
  • Dopamine agonists are the established first-line treatment for prolactinomas, demonstrating significant efficacy.
  • Current management faces challenges including disease recurrence, potential cardiac valvulopathy risks, pregnancy considerations, and impact on quality of life.

Purpose of the Study:

  • To review the established efficacy of dopamine agonists in treating prolactinomas.
  • To identify and discuss current challenges in prolactinoma management.
  • To emphasize the necessity of long-term follow-up for patients with prolactinomas.

Main Methods:

  • Literature review of studies on prolactinoma treatment and management.
  • Analysis of current therapeutic strategies and their limitations.
  • Discussion of emerging concerns and future directions in prolactinoma care.

Main Results:

  • Dopamine agonists are highly effective in achieving biochemical control of prolactinomas.
  • Key challenges include post-treatment recurrence, potential cardiac valvulopathy with high-dose cabergoline, managing pregnancy, and improving patient quality of life.
  • Despite effective pharmaceutical control, long-term patient follow-up is crucial.

Conclusions:

  • While dopamine agonists are the cornerstone of prolactinoma therapy, ongoing challenges necessitate careful patient monitoring.
  • Addressing recurrence, cardiac safety, pregnancy, and quality of life are critical for comprehensive prolactinoma management.
  • Long-term surveillance remains indispensable for optimizing outcomes in patients with prolactinomas.