Reproductive Flashcards
(136 cards)
most common causes of eugonadotropic amenorrhea
Mullerian duct anomalies or imperforate hymen
streak ovaries
turners syndrome
testicular feminization
aka androgen insensitivity
46XY appear phenotypically female, have a blind end vaginal pouch with no uterus
due to insensitive testosterone receptors
how can turners pts become pregnant
with donor oocyte, and they require hormonal supplementation during pregnancy to maintain uterine lining (estrogen and progesterone)
sonic hedgehog
patterning along anterior posterior axis, CNS mt holoprosencephaly
wnt 7
produced at apical ectodermal ridge necessary for dorsal ventral axis
FGF
lengthening of limbs
homebox (Hox) genes
segmental organization of embryo in craniofacial direction
-mt appendages in wrong locations
ectoderm:
surface
neuroectoderm
neural crest
surface ectoderm: epidermis, adenohypophysis (Rathke ppouch), lens of eye, epithelial lining of oral cavity, sensory organs of ear, olfactory epithelium, epidermis, anal canal below pectinate line, parotid, sweat and mamary glads
Neuroectoderm: CNS (brain, neurohypophysis, CNS neurons, oligodendrocytes, astrocytes, ependymal cells, pneal gland), retina, optic nerve, spinal cord
Neural crest: PNS, melanocytes, chromaffin cells of adrenal medulla, parafollicular C cells, cells of thyroid pia, arachnoid, bones of skull, oodontoblast, aorticopulmonary septum
mesoderm
defects=VACTERL vertebral anal atresia cardiac defects tracheoesophageal fistulas Renal defects limbs defects also spleen, vagina, testes, ovaries, adrenal cortex, dermis
endoderm
Enternal layer
-gut tube epithelium, urethra, luminal epithelial derivatives-lungs, liver, bladder, pancreas, eustachain tube, thymus, parathyroid, thyroid follicular cells
teratogen: renal damage
ACEi
teratogen: absence of digits, + other anomalies
alkylating agents
teratogen: CN VIII toxicity
aminoglycosides
teratogen: facial dysmorphism, developmental delay, NTDs, phalanx/fingernail hypoplasia
carbamazepine
teratogen: vaginal clear cell adenocarcinoma, congenital mullerian anomalies
DES
teratogen: NTDs
folate antagonists
ebstein anomaly
lithium
teratogen: aplasia cutis congenita (congenital focus of epidermis with or without other skin layers)
methimazole
cleft palate, cardiac defects, phalanx/fingernail hypoplasia
phenytoin
-fetal hydantoin syndrome
discolored teeth, teratogen
tetracycline
teratogen: limb defects, phocomelia, micromelia, “flipper” limbs
thalidomide
NTDs
valproate-inhibits maternal folate absorption
bone defromities, fetal hemorrhage, abortion, opthalmologic abnormalities
warfarin