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Physiology

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Endocrinology

Question
1 out of 19
 

HIGH prolactin is associated with: (AIIMS NOV 2009)



A Increase FSH
B Increase estradiol

C Increase testosterone
D Increase libido

Ans. B Increase estradiol

Factors Affecting the Secretion of Human Prolactin and Growth Hormone.

Factor

Prolactin

Growth Hormone

Sleep

↑↑

↑↑ Q

Nursing

↑↑↑↑

No change

Breast stimulation in nonlactating women

No change

Stress

↑↑

↑↑ Q

Hypoglycemia

↑↑ Q

Strenuous exercise

Q

Sexual intercourse in women

No change

Pregnancy Q

↑↑↑↑

No change

Estrogens Q

↑↑↑↑

Hypothyroidism

↑↑↑↑

No change

TRH

↑↑

No change

Opioids

Somatostatin Q

No change

↓↓ Q

L-Dopa

↑↑

High prolactin levels tend to suppress the ovulatory cycle by inhibiting the secretion of both follicle-stimulating hormone (FSH) and gonadotropic-releasing hormone (GnRH).They also result in decreased levels of both testosterone and estrogens. This tends to decrease libido.

Endocrinology Flashcard List

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