PHARMACOLOGY Flashcards
Salbutamol (SABA)
MOA
• Inhibits IP3R to reduce Ca2+ release AND stimulates dephosphorylation of MLC
relaxes airways
Salbutamol (SABA) side effects
tachycardia (B1)
muscle tremor (B2)
tolerance
loss of efficacy with infection
functional antagonism
ie the more contraction there is the harder it is to overcome.
SALMETEROL (LABA)
has slow onset
EFORMOTEROL (LABA)
has rapid onset
LABA: salmerterol n eformoterol
use with
Glucocorticoids (to reduce number of deaths)
GLUCOCORTICOIDs drugs:
FLUTICASONE
FLUTICASONE used with Salmeterol
GLUCOCORTICOIDs drugs: BUDESONIDE
BUDESONIDE used with Eformoterol
GLUCOCORTICOID MOA
- Transactivation of genes- get increased expression of anti-inflammatory proteins
- Transrepression of genes- get decreased expression of pro-inflammatory proteins
GLUCOCORTICOID job
preventer
to decrease inflammation (inhaled)
reduce crhonic symptom
prevent asthma attack (oral)
SABA job
reliever
relax airway
(dilator)
for acute symptoms
LABA job
controller
for prophylaxis
GLUCOCORTICOID (inhaled) AE
dysphonia
thrush
GLUCOCORTICOID (oral) AE
o Suppress endogenous glucocorticoid synthesis
o Cataracts, glaucoma
o Cushing’s syndrome
o Chronic use could lead to withdrawal effects
GLUCOCORTICOID limitation
• Doesn’t change/fix airway remodeling