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Doctor insights on: Oxytocin Prolactin

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Does prolactinoma condition inhibit oxytocin production?

Does prolactinoma condition inhibit oxytocin production?

Usually does not: Prolactinoma from a pituitary tumor affects the anterior pituitary. The posterior pituitary is usually not affected-this is where the cells for oxytocin reside. The excess prolactin secretion does not usually impact the oxytocin production. ...Read more

Dr. Samuel Freedman
760 doctors shared insights

Prolactin (Definition)

The pituitary gland makes many hormones. After delivery of a baby, the pituitary gland pours out prolactin which causes the breasts to produce milk. It may be abnormally produced and cause enlarged ...Read more


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What gland produces oxytocin, vasopressin adh?

What gland produces oxytocin, vasopressin adh?

The pituitary gland.: These hormones are chemically very similar, yet functionally distinct. ...Read more

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Gonadotropin-releasing hormone (gnrh) stimulates what?

Gonadotropin-releasing hormone (gnrh) stimulates what?

FSH,LH: Gnrh stimulates follicle stimulating hormone & luteinizing hormone which stimulates the ovary to produce estrogen and Progesterone which stimulates ovulation which causes increased Progesterone which causes secretory endometrium which prepares the endometrium to allow implantation of a fertilized egg. If no fertilized egg, Progesterone falls which stimulates gnrh to again rise & the cycle repeats. ...Read more

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How can men increase prolactin?

How can men increase prolactin?

Not wise: I'm not sure why you would want to increase prolactin. It is a hormone that in women supports breast feeding. In men it causes sexual dysfunction (impotence) and undesirable breast growth (gynecomastia). ...Read more

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What are three hypothalamic hormones that normally stimulate prolactin secretion.?

What are three hypothalamic hormones that normally stimulate prolactin secretion.?

Only one: Prolactin is unique among pituitary hormones in that its secretion is spontaneous in the absence of any stimulation from the hypothalamus. TRH will stimulate some prolactin secretion, but it is not the primary regulator. ...Read more

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What releases anterior pituitary gonadotropins?

What releases anterior pituitary gonadotropins?

Gonadotropes: Fsh and lh are pituitary gonadotropins, they are released in response to pulsatile signals of gnrh from the hypothalamus. The cells that store and release them are sometimes called gonadotropes. ...Read more

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What's luteinizing hormone LH deficiency from--menopause?

What's luteinizing hormone LH deficiency from--menopause?

Not deficient: Lh deficinecy does not go with menopause; in fact lh levels get very much higher during and after menopause. ...Read more

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Will melatonin or prometrium (micronized progesterone) raise prolactin?

Will melatonin or prometrium (micronized progesterone) raise prolactin?

Interesting question: Nocturnal secretion of melatonin has been shown to affect secretion of prolactin. To my knowledge melatonin can exacerbate mild hyperprolactinemia. The relationship between Progesterone and prolactin i think is more unclear. We know thatprogesterone can affect prolactin in various ways. I'm curious to know in what context you would like to know the answer to this question? ...Read more

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High follicle-stimulating hormone (fsh) and luteinizing hormone (lh)--what are normal levels at ovulation?

High follicle-stimulating hormone (fsh) and luteinizing hormone (lh)--what are normal levels at ovulation?

Varies: Lh levels peak just before ovulation, usually over 25 iu/l. During the rest of the cycle lh levels should be very low. Fsh levels are slightly high (5-10 iu/l) around cycle day #3 and also peak just before ovulation, around 15iu/l. ...Read more

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What are some hypothalamic hormones that normally stimulate prolactin secretion?

Inhibitory: Hi. The main hypothalamic influence on prolactin (PRL) secretion is inhibitory, not stimulatory. Dopamine from hypothalamic neurons is inhibitory on anterior pituitary lactotroph cells. There is a stimulatory effect in a fairly sizable fraction of patients from hypothalamic TRH, which is elevated in hypothyroidism. But there is no primary hypothalamic stimulator of PRL secretion. ...Read more

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Fsh, lh follicular stimulating hormone (fsh) 4.96 and LH is 2.89 .Is this normal?

Fsh, lh
follicular stimulating hormone
(fsh)
4.96 and LH is 2.89 .Is this normal?

Probably: Normal ranges can vary from lab to lab, so the 1st step would be to compare your results to the reference range, usually listed in parentheses such as (1.5 - 10). For hormone tests, however, results have to be interpreted in the context of what is happening clinically. Expected values for someone who is pregnant, or on birth control pills, or who should be ovulating at the time could all differ. ...Read more

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Can Clomid (clomiphene) raise FSH levels?

Can Clomid (clomiphene) raise FSH levels?

Yes: After taking Clomid (clomiphene) fsh levels may rise - this is the basis of the Clomid (clomiphene) challenge test (cct, also known as the ccct) which is a test of ovarian reserve or 'egg supply'. For this test you get an fsh level and Estradiol blood test on day 2 or 3, take 100 mg or two pills of Clomid (clomiphene) a day from days 5 to 9, then repeat the fsh test on day 10. Clomid (clomiphene) does not affect day 2 or 3 fsh levels though. ...Read more

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Microprolactinoma- mod. Elevated prolactin, pituitary stalk deviated left, extremely low t : cabergoline normalized prolactin, yet t remained low?

Microprolactinoma- mod. Elevated prolactin, pituitary stalk deviated left, extremely low t : cabergoline normalized prolactin, yet t remained low?

Low testosterone: Prolactin inhibits lh and fsh secretion by the pituitary. . Lh and fsh are needed for secretion of testosterone by the testicles. It might take a while for pituitary to get back to normal lh and fsh secretion after prolactin is suppressed. ...Read more

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Will exogenous oxytocin cause uterine contractions in nonpregnant women?

Will exogenous oxytocin cause uterine contractions in nonpregnant women?

Same token: Endogenous oxytocin release during orgasm can cause uterine contractions; by the same token, exogenous oxytocin can cause uterine contractions outside pregnancy. ...Read more

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Gonadotropin-releasing hormone (gnrh) stimulates the production what?

Good question: Gnrh would seem by its name to help release gonadotropin. And if used in a certain fashion it could cause the release of gonadotropins (lh, fsh). However when given in a shot and having a sustained effect on the pituitary, it actually suppresses the release of lh and fsh. And this aspect of the medication can be used to help in many situations. ...Read more

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Does Effexor (venlafaxine) raise shbg (sex hormone binding gobulin) levels?

Does Effexor (venlafaxine) raise shbg (sex hormone binding gobulin) levels?

Interesting question: I have not found any publications specifically studying this question. Antipsychotics and Prozac (fluoxetine) can affect prolactin, potentially changing sex hormone levels. This may or may not relate to shbg levels, though. I did find one small (20 patients) study online concerning low testosterone levels and antidepressant-induced sexual dysfunction: http://tinyurl.Com/mk84cfr further research needed. ...Read more

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Is PCOS or non classic CAH?FSH/LH are 1:3 ratio Testosteron Androstenedion 17Oh Progesteron are high Cortizol DHEA-S SHBG PROLACTIN Normal ACTH low

Is  PCOS or non classic CAH?FSH/LH are 1:3 ratio Testosteron Androstenedion 17Oh Progesteron are high Cortizol DHEA-S SHBG PROLACTIN  Normal ACTH low

ACTH stimulation: If you have features of both problems, the male hormone levels and menstrual irregularities and infertility are the hallmarks of a diagnosis of PCOS. What does your Endo or Gyne/Endo say about this ? Ask them for answers, which may include an ACTH stim test to see how your pituitary axis is functioning to start with, followed by more adrenal function testing... ...Read more

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Is my pituitary tumor affecting my oxytocin levels?

Maybe: It depends on which part of the pituitary is affected. The only way to know is to have your levels measured. ...Read more

Dr. Kenneth Stoller
225 doctors shared insights

Oxytocin (Definition)

Brings on or strengthens labor contractions during childbirth. Also used to ...Read more


Dr. Creighton Wright
64 doctors shared insights

Pitocin (Definition)

Pitocin is a labor inducer which is a kind of women's ...Read more