Quiz2 Flashcards
What is OCTREOTIDE?
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.
What are MENOTROPINS?
Purified extract of FSH and LH, also known as menopausal gonadotropins (hMG)
Used for fertility treatments.
What is the main function of FOLLICLE-STIMULATING HORMONE (FSH)?
Direct ovarian follicle development
FSH also stimulates the conversion of androgens to estrogens by granulosa cells.
What is LUTROPIN ALFA?
The recombinant form of human LH introduced in the US in 2004
Approved for use with follitropin alfa for follicular development.
What are the available forms of purified FSH?
- Urofollitropin (uFSH)
- Follitropin alfa
- Follitropin beta
What is the relationship between LH and ovarian steroidogenesis?
Both FSH and LH are necessary for ovarian steroidogenesis
LH stimulates androgen production in the theca cells during the follicular phase.
What is the purpose of somatostatin receptor scintigraphy?
To localize neuroendocrine tumors having somatostatin receptors
It uses radiolabeled octreotide.
What are common adverse effects of Lutropin?
- Nausea
- Vomiting
- Abdominal cramps
- Flatulence
- Steatorrhea
What is CHORIONIC GONADOTROPIN (hCG)?
A hormone produced by the human placenta and excreted into urine
Choriogonadotropin alfa (rhCG) is a recombinant form of hCG.
What symptoms are indicative of hypogonadism?
- Delayed puberty
- Retention of prepubertal secondary sex characteristics
What is PEGVISOMAT?
A GH receptor antagonist used in the treatment of acromegaly
It is a polyethylene glycol derivative of a mutant GH.
What is a notable use of gonadotropins in male fertility?
Induction of ovulation in women with anovulation
This can be due to various causes such as hypogonadotropic hypogonadism or polycystic ovary syndrome.
True or False: Lutropin has been approved for use with all preparations of FSH.
False
It has only been approved for use with follitropin alfa.
Fill in the blank: Long-term use of octreotide can lead to _______.
Vitamin B12 deficiency
What is the primary effect of gallbladder sludge?
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.