Lecture 9 Flashcards
1
Q
Prostaglandins
A
- They were originally identified in seminal fluid, reproductive accessory glands;
- Are secreted by almost all body tissues; At the base is prostanoic acid; Unsaturated fatty acids with 20 C atoms;
- Essential precursor is arachidonic acid / prostanoic; Pt. breeding, F2α and PGE2 are important;
2
Q
Prostaglandins effects
A
- Luteolisis
- Vasoconstriction
3
Q
Prostaglandins use:
A
- Control of ovulation;
- Heat synchronization & induction;
- Luteolysis;
- Abortion;
- Induction of parturition;
- Endometritis;
- Pyometra;
4
Q
Prostaglandins effect on cattle :
A
5
Q
Prostaglandins effect on pigs
A
6
Q
Prostaglandins effect on Horses
A
7
Q
Prostaglandins effect on dogs & cats
A
8
Q
Relaxin
A
- Firstly isolated from a sow ovary Hishaw-1926-;
- Polypeptide hormone with a molecular weight of 5700 D;
- Two subunits α and β;
- Soluble;
- Evidenced in all domestic animals;
- Synthesis
- Pregnancy corpus luteum of, in the form of granules;
- Placenta in the last third of gestation;
- Plasma levels:
- in early gestation, 1 ng / ml;
- the day before parturition, 38 ng / ml;
- during parturition, 60 ng / ml;
- PgF2α increases relaxin levels; after birth, disappears quickly;
9
Q
Relaxin effects:
A
- products Similar effects:
- Duphaspasmin ®;
- Spasmotitrat ®;
- Uterusrelaxans ®.
10
Q
PHEROMONES
A
- Ecto-sociohormons;
- Volatile substances;
- Elliminate in the environment, recepted by other organisms from the same species
- Determine a specific behavior;
- Taken over by olfactory (vomeronasal organ), oral or percutaneous;
- Acting strictly intraspecific;
- Can be detected by other species;
11
Q
PHEROMONES examples
A
12
Q
PHEROMONES examples 2
A
Vomeronazal organ
