25 results
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
hypersensitivity reactions ... Antigen-antibody complex ... Antigen-antibody complexes ... T-cells recruit ... allergy #table #classification
Types of hypersensitivity reactions

Type I - lgE-Mediated, Within I Hour (Anaphylaxis)
Type II - IgG or IgM
hypersensitivity reactions ... Type Ill - Immune Complex-Mediated ... Sickness) Type IV T-Cell-Mediated ... hypersensitivity #reactions ... #Types #Classification
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
with cytotoxic T ... Antigen-antibody complexes ... Hypersensitivity #Types #Classification ... #Pathophysiology ... Allergy #Diagnosis #Reactions
Type II Hypersensitivity: Pathogenesis and clinical findings
Definition: When antigens bind to the body's cell surfaces, forming
antigen-surface complex ... antibody-mediated immune reaction ... antigen-surface complex ... or the entire complex ... Allergy #Immunology #pathophysiology
Cellular and humoral immune responses of the adaptive immune system. Activated T cells accomplish cellular immune
Activated T cells ... to the T-cell receptor ... histocompatibility complex ... depending on the T-cell ... ImmuneResponses #immunology #pathophysiology
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
antigen-surface complex ... it is entirely T-Cell ... allergen-specific T-Cell ... exposure, because T-Cell ... #Types #Classification
Type IV Hypersensitivity: Pathogenesis and clinical findings
Definition: Unique because it is entirely T-Cell mediated; exposure to
it is entirely T-Cell ... allergen-specific T-Cell ... Allergic reaction ... exposure, because T-Cell ... Allergy #Immunology #pathophysiology
Symptoms Distinguishing Groups of Cutaneous Drug Reactions
IgE-mediated reactions:
 • Onset minutes to hours into treatment course
Cutaneous Drug Reactions ... scarring Benign T-cell-mediated ... reactions: • ... weeks Severe T-cell-mediated ... clinical #comparison #classification
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Target: Modified cell ... Antigen-Ab immune complexes ... Immunological Mediator: Th Cells ... Dermatitis (ie. reaction ... #Types #Classification
Acute Rheumatic Fever: Pathogenesis and Clinical Findings

Delayed autoimmune reaction
-> Molecular mimicry
-> GAS antigen cross-reacts with host
->
Delayed autoimmune reaction ... auto-reactive B and CD-4+ T ... cells -> Tissue ... CRP Neuronal cell ... RheumaticFever #pathophysiology