Quiz2 Flashcards

1
Q

What is OCTREOTIDE?

A

A somatostatin analog used to reduce GH release and treat hormone-secreting tumors

It is 45 times more potent than somatostatin in inhibiting GH release.

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2
Q

What are MENOTROPINS?

A

Purified extract of FSH and LH, also known as menopausal gonadotropins (hMG)

Used for fertility treatments.

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3
Q

What is the main function of FOLLICLE-STIMULATING HORMONE (FSH)?

A

Direct ovarian follicle development

FSH also stimulates the conversion of androgens to estrogens by granulosa cells.

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4
Q

What is LUTROPIN ALFA?

A

The recombinant form of human LH introduced in the US in 2004

Approved for use with follitropin alfa for follicular development.

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5
Q

What are the available forms of purified FSH?

A
  • Urofollitropin (uFSH)
  • Follitropin alfa
  • Follitropin beta
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6
Q

What is the relationship between LH and ovarian steroidogenesis?

A

Both FSH and LH are necessary for ovarian steroidogenesis

LH stimulates androgen production in the theca cells during the follicular phase.

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7
Q

What is the purpose of somatostatin receptor scintigraphy?

A

To localize neuroendocrine tumors having somatostatin receptors

It uses radiolabeled octreotide.

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8
Q

What are common adverse effects of Lutropin?

A
  • Nausea
  • Vomiting
  • Abdominal cramps
  • Flatulence
  • Steatorrhea
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9
Q

What is CHORIONIC GONADOTROPIN (hCG)?

A

A hormone produced by the human placenta and excreted into urine

Choriogonadotropin alfa (rhCG) is a recombinant form of hCG.

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10
Q

What symptoms are indicative of hypogonadism?

A
  • Delayed puberty
  • Retention of prepubertal secondary sex characteristics
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11
Q

What is PEGVISOMAT?

A

A GH receptor antagonist used in the treatment of acromegaly

It is a polyethylene glycol derivative of a mutant GH.

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12
Q

What is a notable use of gonadotropins in male fertility?

A

Induction of ovulation in women with anovulation

This can be due to various causes such as hypogonadotropic hypogonadism or polycystic ovary syndrome.

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13
Q

True or False: Lutropin has been approved for use with all preparations of FSH.

A

False

It has only been approved for use with follitropin alfa.

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14
Q

Fill in the blank: Long-term use of octreotide can lead to _______.

A

Vitamin B12 deficiency

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15
Q

What is the primary effect of gallbladder sludge?

A

A collection of cholesterol, calcium, bilirubin, and other compounds in the gallbladder

This may occur in 20-30% of patients after 6 months of octreotide use.

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16
Q

What is the role of LH during the luteal phase of the menstrual cycle?

A

Controls estrogen and progesterone production

If pregnancy occurs, hCG takes over this control.

17
Q

What is the black-box warning associated with chorionic gonadotropin in the US?

A

Its use for weight loss

This warning indicates potential risks and lack of efficacy for this purpose.