Respiratory Flashcards
Beta 2 Adrenoceptor
- MOA
GPCR (Gs)
- Increases cAMP
Beta 2 Adrenoceptor Agonist
- MOA
- Dilate bronchi by acting on Gs Beta 2 Adrenoceptors
- Inhibit mediator release from mast cells
- Inhibit TNFa release from monocytes
- Increase mucus clearance by acting on cilia
Beta 2 Adrenoceptor Agonist
- cAMP relationship to bronchi
Beta 2 Adrenoceptor activation = Increased cAMP
- More cAMP = Greater activation of PKA
–> Reduces Ca2+ levels leading to bronchidilation
Salbutamol
Beta 2 Adrenoceptor Agonist
- Oral/Injection
- Short Acting
Terbutaline
Beta 2 Adrenoceptor Agonist
- Short Acting
Salmeterol
Beta 2 Adrenoceptor Agonist
- Long Acting
Taken when asthma is not properly controlled by glucocorticoids
Formoterol
Beta 2 Adrenoceptor Agonist
- Long Acting
Taken when asthma is not properly controlled by glucocorticoids
Beta 2 Adrenoceptor Agonists
- Adverse Effects
- Tachycardia
- Dysrhythmias
- Tremor
Theophylline/Aminophylline
- MOA
- Inhibits PDE
–> Prevents breakdown of cAMP = Increase cAMP - Inhibits Adenosine Receptors
- Inhibits intracellular calcium release
–> Reduces smooth muscle contraction
Theophylline/Aminophylline
- Adverse Effects
Dysrhythmia
Seizures
Montelukast/Zafirlukast
- MOA
Cysteinyl Leukotriene Receptor Antagonist (CysLT1)
Antagonism reverses:
- Bronchoconstriction
- Hyperresponsive airways
- Mucosal edema
- Mucosa hypersecretion
Montelukast/Zafirlukast
- Comparison to Beta 2 Adrenoceptor Agonist
Not as effective as Beta 2 Adrenoceptor Agonist
Montelukast/Zafirlukast
- Route
Taken by mouth
Usually taken with inhaled corticosteroids
Beclometasone
Glucocorticoid
- Given as an inhalation
Anti-inflammatory
- Treats acute severe asthma
- Prevent chronic asthma
Adverse Effect:
- Adrenal Suppression
- Oropharyngeal candidiasis
Budenoside
Glucocorticoid
- Given as an inhalation
Anti-inflammatory
- Treats acute severe asthma
- Prevent chronic asthma
Adverse Effect:
- Adrenal Suppression
- Oropharyngeal candidiasis