Repro Flashcards
Sonic hedgehog gene
- Produced at base of limbs
- Anteroposterior axis and CNS development
- Mutation –> holoprosencephaly
Wnt-7 gene
- Produced at apical ectodermal ridge (distal limb)
- Dorsal-ventral exis
FGF gene
- Produced at apical ectodermal ridge
- Lengthening of limbs
Homeobox genes
- Code for TF
- Mutation –> appendages in wrong locations
ACEi during pregnancy
Renal damage
Alkylating agent during pregnancy
Absence of digits, multiple probs
Aminoglycosides
Ototoxicity
Antiepileptic drugs (Valproate, carbamazepine, phenytoin, phenobarbital)
Neural tube defects (high dose folate supplementation), cardiac defects, cleft palate, skeletal abnormalities
DES
Vaginal clear cell adenocarcinoma, congenital Mullerian anomalies
Folate antagonists (trimethoprim, methotrexate, antiepileptics)
Neural tube defects
Isotretinoin
Multiple severe birth defects
Conception mandatory
Lithium
EBSTEIN ANOMALY - apical displacement of tricuspid valve (decreased volume of RV, atrialization of RV)
Methimazole
Aplasia cutis congenita
Tetracyclines
Discolored teeth, inhibited bone growth
Thalidomide
Limb defects (“flipper” limbs)
Warfarin
Bone deformities, fetal hemorrahge, abortion, ophthalmologic abnormalities
- USE HEPARIN IN PREGNANCY
Alcohol in pregnancy
FAS - intellectual disability, pre- and postnatal development retardation, microcephaly, smooth philtrum, thin upper lip, small palepbral fissures, limb dislocation, heart defects, heart-lung fistulas, holoprosencephaly
- Failure of cell migration
Cocaine in pregnancy
Low birth weight, preterm birth, IUGR, placental abruption
- Causes vasoconstriction
Smoking in pregnancy
Low birth weight, preterm labor, placental problem, IUGR, SIDS
- Nicotine –> vasoconstriction
- CO –> impaired O2 delivery
Iodine (lack or excess) in pregnancy
Congenital goiter/hypothyroidism (cretinism)
Maternal Diabetes
- Caudal regression syndrome (anal atresia, sirenomelia), congenital heart defects, neural tube defects, macrosomia
Methylmercury (from swordfish, shark, tilefish, king mackerel) in pregnancy
Neurotoxicity
Vitamin A excess in pregnancy
Spontaneous abortions, birth defects (cleft palate, cardiac probs)
X-rays in pregnancy
Microcephaly, intellectual disability
Urachus
- Fetal bladder –> umbilicus
- Patent urachus –> urine discharge from umbilicus
- Urachal cyst, vesicourachal diverticulum
Vitelline Duct
Yolk sac –> midgut lumen
Vitelline fistula –> meconium discharge from umbilicus
- Meckel diverticulum
Cleft Lip
Failure of fusion of maxillary and medial nasal processes
Cleft Palate
Failure of fusion of two lateral palatine shelves or failure of fusion of lateral palatine shelves with nasal septum and/or medial palatine shelf
Mullerian Agenesis (Mayer-Rokitansky-Kuster-Hauser Syndrome)
Primary amenorrhea (lack of uterine development) in females with fully developed secondary sexual characteristics (functional ovaries) - Paramesonephric duct prob
Gartner Duct
Remnant of mesonephric duct in females
Male remnant of paramesonephric duct
appendix testis
No sertoli cells or lack of mullerian inhibitory factor
Testes + no MIF
- Develop both male and female internal genitalia
- Develop male external genitalia
5-alpha reductase deficiency
Inability to convert testosterone to DHT
- Male internal genitalia, ambiguous external genitalia until puberty (increased testosterone causes masculinization)
- Testosterone/estrogen levels normal
- LH is normal or increased
- Internal genitalia normal
Hypospadias
Failure of URETHRAL FOLDS to fuse
- Assoc. w/ inguinal hernia and cryptorchidism
Epispadias
Faulty position of GENITAL TUBERCLE
- Assoc. w/ exstrophy of the bladder
Gubernaculum
Male: anchors testes
Female: ovarian ligament + round ligament of uterus
Processus vaginalus
Forms tunica vaginalis in male
What drains to para-aortic lymph nodes?
Ovaries/testes