2931 results
Type IV Hypersensitivity: Pathogenesis and clinical findings
Definition: Unique because it is entirely T-Cell mediated; exposure to
causes development ... Allergic reaction ... Macrophage engulfs antigen ... -> Antigen presentation ... cells recognize antigen
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
cell surfaces causes ... reaction against the antigen ... cell surface, and antigen-surface ... small antibody-antigen ... causes development
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Mediators: lgE - Antigen ... Form: Soluble antigen ... Mechanism of Action: Allergen-specific ... lgE causes mast-cell ... reactions #types #allergy
Type III Hypersensitivity: Pathogenesis and clinical findings
Definition: Small antigen-antibody complexes (produced from normal immune response to
Definition: Small antigen-antibody ... self-antigens are the cause ... antigens are the cause ... HypersensitivityReaction #Allergy
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Immunological Target: Allergen ... fever, Urticaria, Allergic ... Immunological Target: Antigen-Ab ... Hypersensitivity #Allergy ... #Allergic #Reactions
Type I Hypersensitivity: Pathogenesis and clinical findings
Definition: Production of lgE Antibodies that bind to harmless allergens
leading to an allergic ... Sensitization" to Allergen ... Initial exposure to allergen ... after clearance of allergen ... • Hay fever (allergic
Pharmacology: Anti-Allergic Therapy

#Pharmacology #Mechanisms #Allergy #Antiallergic #AntiAllergen #Antihistamines #Leukotrienes
Pharmacology: Anti-Allergic ... Pharmacology #Mechanisms #Allergy
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
lgE - Soluble antigen ... - Allergen-specific ... When the specific allergen ... IgM - Cell-bound antigen ... Pathophysiology #Allergy
Treatment Options for Helicobacter Pylori and Peptic Ulcer Disease

Active Helicobacter pylori—associated ulcer
1. Treat with anti—H pylori
if penicillin allergic ... breath test, fecal antigen ... Consider other causes
Allergic Rhinitis: Pathogenesis and clinical findings

1. Allergy Sensitization -> Antigen Exposure -> APC (macrophages, HLA class
Allergic Rhinitis ... Allergy Sensitization ... -> Antigen Exposure ... class II) process antigen ... Tissue edema #Allergic