Metabolic and Menopause Flashcards
(45 cards)
What stimulates releaase of FSH and LH from the pituitary?
GnRH from hypothalamus
effect of FSH/LH on uterus and ovary
release estrogen and progesterone
Progesterone has ____ effect on GnRH release
negative
is a syndrome of ovarian dysfunction affecting 6-8% of reproductive age women worldwide. The most common endocrine abnormality of women of reproductive age.
• Its clinical manifestations include: chronic anovulation (oligo/amenorrhea, infertility) and hyperandrogenism (hirsutism, acne, alopecia).
PCOS
Define PCOS
what risks are associated with it?
The syndrome is defined by a clustering of signs and features, where no single test is diagnostic.
• PCOS is associated with an increased risk of diabetes and other metabolic abnormalities which may potentially increase the risk of coronary artery disease
Clinical Manifestations of PCOS Hyperandrogenism
Hirsutism, acne, alopecia, deepening voice, more muscle, clitoromegaly often peripubetal onset
Pathophysciology of PCOS?
Complex disorder and partially understood
Gonadotropin secretion disturbance
Steroidogenesis disorder
Insulin resistance
Explain pathphys of PCOS in relationship to high androgens effect on:
skin:
insulin:
adipose tissue:
Skin: hirsutism, acne, acnothosis nigrans
INuslin: insuiln resistance
Adipose: increase estrone production causing endometiral hyperplasia as well as follicular atresian = anovulation/amneorrhea
We get tons of androgen production in PCOS becse the ____ is stimulated by a high LH:FSH ratio from abnormal androgen and estrone feedback
ovary or theca
LH stimulstes the ____ cell to make testosterone and androstendione from cholesterol
Theca cell
FSH stimulates the ___ cell to make estradiol and DHT from androstendione and testosterone it gets from the Thecal cell
Granulosa cell
High levels of ___ and ___ INCREASE thecal cell production of more androstendion and testesterone
IFG and INhibin
also insulin increases prodcution!!!
we see ____ in lean and obese women with PCOS compared to otehr women
insulin resistance (thus encourages Thecal cell to make androgens)
Dx criteria for PCOS
at least 2 of the 3:
- Oligo- or anovulation
- Clinical and/or biochemical signs of hyperandrogenism
• Polycystic ovaries on imaging
And
• Absence of secondary causes (CAH, androgen-secreting tumors, Cushing’s syndrome)
Similarities of PCOS and Metabolic Syndrome Related to Insulin Resistance
- Central obesity
- Hyperinsulinemia
- Low SHBG
- Abnormal lipids (elevated TG, low HDL)
- Higher prevalence of IGT and diabetes.
- Increased risk of non alcoholic steatohepatitis (fatty liver).
Dx of PCOS
- Diagnosis of PCOS made based on history, clinical suspicion
- Biochemical evaluation is for excluding less common causes of hirsutism and menstrual irregularities (androgen secreting tumors, CAH, thyroid disease)
- Biochemical testing will often result in “normal” results
- Tests for insulin resistance are not required to make a diagnosis of PCOS
Mangement of PCOS; tx complaint and think about long term issues:
• Treatment of symptoms of anovulation :
- regulate menses
- induce ovulation
- endometrial cancer risk reduction
• Treatment of obesity and metabolic disorders in women with PCOS includes:
- Obesity management
- Sleep apnea screening
- Diabetes prevention
-Lipid management and cardiovascular disease risk reduction
Treat symptoms of hyperandrogenism and screen for anxiety and depresssion
in women with PCOS
HOw do OCPS help tx PCOS?
Suppress ovarian androgen secretion by suppression of gonadotropins
Increases SHBG
Decreases free testosterone and free androgen index
Improves hirsutism
Regulates menses and provides adequate progestin to protect endometrial lining (lowers risk for endometrial hyperplasia)
• Competitive inhibitor of androgen receptor
- Improves hirsutism, acne and alopecia
- Does not inhibit androgen secretion
- Requires reliable contraception
used to tx PCOS
spironolactone
the final menstrual period and is usually confirmed when a woman has missed her period for 12 consecutive months (in the absence of other obvious causes).
• It reflects complete or near complete depletion of ovarian follicles and absence of ovarian estrogen secretion. It marks the permanent end of fertility.
• Menopause
Age of menopause and what is it influenced by?
- Average age is 51, but age ranges from 40 to early 60s. (occurs after 55 in 5% and between 40-45 in 5%.
- Age of menopause influenced by genetics, ethnicity, smoking, and reproductive history.
It can last 6 years or more and ends 1 year after the final menstrual
period.
Perimenopause/Menopause Transition