HYPERSENSITIVITY
CLASSICAL ALTERNATE AND LECTIN PATHWAYS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
first generation
|
|
|
second generation
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Acrivastine (ak” ri vas’ teen) is a second generation antihistamine (H1 receptor blocker) that is used to treat allergic symptoms associated with hay fever, seasonal allergies, urticaria, angioedema and atopic dermatitis.
Detailed explanation-2: -First-generation antihistamines are primarily over-the-counter OTC) and are included in many combination products for cough, colds, and allergies. These include brompheniramine, chlorpheniramine (Chlor-Trimeton), and diphenhydramine (Benadryl).
Detailed explanation-3: -First-generation antihistamines block both histaminic and muscarinic receptors as well as passing the blood-brain barrier. Second-generation antihistamines mainly block histaminic receptors and do not pass the blood-brain barrier.