Week 142 Inflammatory B. Disease Flashcards
ASA’s have minimal use in ____
Chron’s disease
Aminosalicylates are first line treatment for___
Ulcerative collitis
Aminosalicylates prevent ____
Colonic Cancer
Mechanism of action of ASAs is ______ _________ by inhibiting synthesis of inflammatory the mediators ______, T________ and P________ Factors.
Prostaglandins
OTHERS - see ppt
Sulfasalazine is a type of ______. It’s side effects are ________.
ASA.
5-ASA bond of drug is cleaved, activating the drug. Lots of side effects, however. Leucopenia, rash, male infertility, ORANGE discolouration of body secretions.
Mesalazine is a _____. It is absorbed in the ____ and has very few ______.
ASA.
Current first line choice, that is well tolerated, and rapidly and completely absorbed in the upper jejenum.
Oral and rectal administration.
Name Two Mesalazine formulations.
Asacol
Pentasa
(mezavant) (third)
With mesalazine, you must prescribe ________ .
Brand names.
What is the aim of corticosteroid use?
Induce remission. NO role in maintenance therapy.
What is the action of corticosteroids?
Anti-inflammatory action sim. to glucocorticoids produced naturally.
Inactivates pro inflammatory transcription factors.
What happens with long term corticosteroid use?
ADVERSE EFFECTS
Buffalo hump
Cushing syndrome
What do you aim to protect with calcium and bisphosphonates when giving corticosteroid treatment?
BONES.
What is prenisolone?
Corticosteroid.
Closely mimics endemic cortisone.
Why is it important to taper doese of corticosteroids?
Prevent addisonian crisis.
Name 3 oral corticosteroids.
Prednisolone
Budesonide
Beclametasone
Name an IV corticosteroid.
Hydrocortisone.
When are Thiopurines recommended?
UNLICENSED.
When 5-ASA are ineffective/not tolerated. If steroid dependent. If severe or frequent relapse. If require 2 or more corticosteroid in 12 mth period. If requires more than 50mg sterod (?check that value!)
What is azathioprine?
A thiopurine.
Avoid in pregnancy (cytotoxic)
50-150mg bd.
Some mild side effects, but also bone marrow suppression, luekopenia, and hepatotoxicity.
What is TPMP? What does it do?
Thiopurine methyltransferase.
Metabolises Azathioprine and 6-MP.
Risks with TPMT ?
Higher risk of bone marrow suppression in patients with TMPT insufficiency.
Ciclosporin is a ____ used for management of active severe _____. Induces remission in ____ and has NO therapeutic effect in ______.
Calcineurin inhibitor
Ulcerative collitis
50-80%
Chron’s.
Ciclosporin is a rescue therapy after ___ days of failed ____ therapy.
7 days
IV steroid therapy
Target blood level for Ciclosporin?
150-250 mcg/L
Ciclosporing interacts with ________.
PVC giving sets (max 6 hours).
For continuous infucsion, use non-pvc giving sets or change every 6 hours.
Adverse effects of ciclosporin?
hypertension
infection
renal impairment, increased risk of seizure with iv if:
-hypocholesterolaemia
-Hypomagnesaemia ALSO ////: Gum hypertrophy and hirsuitism.
Which drugs should you be aware of if taking ciclosporin?
Macrolide antibiotics - clarithromycin, erythromycin.
These inhibit metabolism of the active drug (cyclosporin), so monitor bloods to ensure levels do not as metabolism is induced.
What action does methotrexate have?
Anti inflammatory.
Methotrexate is used for treatment of ______. NOT _____.
Chrons, NOT Ulcerative collitis.
What do you give once weekly (5mg) to prevent or reduce side effects from methotrexate?
Folic acid.
Always prescribe methotrexate as a _____ dose.
Weekly.
Which drugs are used in biological therapy for UC and CD?
Infliximab
Adalimumab
These are monoclonal antibodies that target TNF-alpha, an inflammatory mediator.
Method of action of infliximab?
Chimeric anti inflammatory action.
If ciclosporin is contraindicated or inappropriate in ulcerative collitis, what can you use?
Infliximab.
What is Adalimumab?
humanised monoclonal antibody
Licenced for UC and Chrons. NICE only recommends CD.
Targets TNF-Alpha cells.