Immunology/Rheum Flashcards
WHat is needed post transplant to reduce rejection
Immunosuppresion
Types of transplant
Autograft
Allograft
Xenograft
Stem cell
Autograft transplant
Transplantation within the individual
Allograft transplant
Transplant within the same species i.e. human to human who is non genetically identical
Xenograft transplant
Transplant from one species to another
Compatibility between donor and recipient is based on
ABO Blood group
Tissue typing
Cross matching
Panel reactive antibody test
Type 1 (allergic reactions) Abs
IgE antibodies
Mast cells
Basophils
Type II (antibody dependent cytotoxic reactions) Abs
IgG antibodies
Examples of type 1 reactions
Hayfever
Allergies/anaphylaxis
Ezcema
Asthma
Examples of type II reactions
Drug induced haemolytic anaemia
Acute transfusion reactions
Goodpastures syndrome
Type III reactions
Immune complex reactions
Examples of type III reactions
Serum sickness
SLE
Post strep glomerulonephrtisis
Cells of type IV reactions
Helper T cells
Cytotoxic T cells
Examples of type IV reactions
Contact dermaitis
BCG immunisation
Most common cause of hypothyroidism worldwide
Iodine defieincy
How is congential hypothyroidism screened
Guthrie (heel prick) test
Causes of primary hypothyroidism
Hashimotos thyroidis (autoimmune)
Iodine deficiency
Drugs
- amoidarone
- lithium
- anti-thyroid meds
Neck RTx
Radioiodine treatment / surgery
Congenital
De quervians thyroiditis (subacute thyroiditis)
What blood test is used to diagnose Hashimotos
Anti-thyroid peroxidaseT
Two types of immune system
Innate
Adaptive
Cells of innate immunity
Antigen presenting cells such as dendritic cells
Cells of adaptive immunity
Includes B cells and T cells
What is the first line of defence against infection
Innate immunity
Two parts of the adaptive immune system
Humoral
Cellular
What is involved in the primary immune response
IgM
What is involved in the secondary immune response
IgG
Which cytokine is implicated in the acute phase response and systemic inflammation
Tumour necrosis factor alpha
What is lambert eaton myasthenic syndrome assosiated with
voltage gated calcium channel antibodies
Presentation of lambert eaton myasthenic syndrome
Weakness of limbs
Symptoms worse in hot weather
Symptoms better in exercise
Reflexes reduce but increase with muscle use
What is felty syndrome
A rare condition seen in patients with RA characterised by a triad of
1. RA
2. Splenomegaly
3. Neutropenia
Syptoms of felty syndrome
Recurren infections
Abdo pain (due to splenomegaly)
Weight loss
Fatigue
Lymphadenopathy
Skin ulcers
May be eye involvement
Abs of felty syndrome
anti-CCP Abs
Positive RF
Which HLA is seen in felty syndrome
HLA-DR4
SLE may be diagnosed if they meet 4 of the following 11 criteria
Malar rash
Discoid rash
Photosensitivity
Oral ulcers
Arthritis
Serositis (pleuritis or pericarditis)
Renal disorder
Neurological disorder (seizures or psychosis)
Haematological disorder (haemolytic anaemia or leukopenia <4 on two or more occassions, lymphopenia 1.5 on two or more occassions or thrombocytopenia)
Immunological disorders (raised anti native DNA antibody binding, or anti-sm antibody or positive antiphospholipid Abs)
Antinuclear antibody raised in titre (in abscence of known drugs to cause drug induced lupus)
Presentation of PMR
Proximal muscle pain
Stiffness