Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
What is a hormone?
|
chemical substance produced in body that regulates activity of certain cells/organs (often tranported through body)
|
|
|
what are the 4 hormone classes?
|
peptides, glycoproteins, steroids, prostaglandins
|
|
|
what are the types of peptides?
|
GnRH, Oxytocin
|
|
|
what are the types of glycoproteins?
|
pituitary Gonadotropins (FSH, LH), Chorionic Gonadotropins (eCG, hCG)
|
|
|
what are the types of steroids?
|
progestagens (progesterone, P4), estrogens (E2), androgens (testosterone), corticosteroids/glucocorticoids
|
|
|
what are the clinical uses of GnRH?
|
cows (Tx for cystic ovaries, synchronize follicular waves/induce ovulation, used with progestagen and prostaglandin protocols to synchronize estrus or superovulation), mare (induce ovulation)
|
|
|
what are the clinical uses of Oxytocin?
|
milke letdown (F of all species), obstetrics (induce parturition, postpartum uterine contractions/involution)
|
|
|
what are the clinical uses of Gonadotropins?
|
LH (induce ovulation of mature follicles, recombinant products in future), FSH (superovulation protocols, commercial products available, recombinant products in future), hCG (cows: Tx for cystic ovaries), (Mares:induce ovulation of mature follicles >35mm), eCG (other mammals: FSH & LH bioactivity), cows (superovulation with eCG), pigs (induce estrus in pre-pebertal gilts and weaned sows with PG 600)
|
|
|
what are the clinical uses of Steroid Hormones?
|
progestagens (cows: estrus synchornization via CIDR-intravaginal delivery, MGA-feed additive), (mares: estrus manipulation - seasonal transition, scheduled breeding, regu-mate-oral), (gilts: estrus synchronization-altrenogest as top dressing), (dogs: postpone estrus & alleviate fall pregnancy, ovaban-oral), androgens: testosterone (stimulate male like behavior-injectable compounded products), (cattle:growth promotion-implants), estrogens (cows: regulation of follicular waves, GnRH is used today in place of estrogens), (mares:enhance sexual receptivity of ovariectomized mares in semen collection programs, induction of labor prior to oxytocin), (F dogs: mis matching abortion-injections), corticosteroids/glucocorticoids (cows/heifers: induce parturition)
|
|
|
what are the clinical uses of prostaglandins?
|
play role in luteolysis, ovulation, parturition, sperm/ova transport, (cows/mares: major use in estrous cycle control)
|
