What is the basic pathophysiology of MS?
Autoimmune stripping of the myelin sheath around the CNS axons.
3rd line drug classes in treating MS?
•Teriflunomide – pyrimidine synthesis inhibitor
•Dimethyl Fumarate – alters cellular response to oxidative stress
•Fingolimod – alters lymphocyte migration
•Glatiramer – synthetic polypeptide that looks like myelin, acts as a decoy
Things to monitor with Mitoxantrone
◦CBC, EKG, LVEF
Fingolimod: things to monitor
◦CBC, ECG, Varicella Zoster antibody, blood pressure, ophthalmic exam, LFTs
For MS Exacerbations what drug can be given?
Methylprednisolone
15-45
Interferon should be avoided in patients with what?
What drug should be limited in maximum lifetime dose due to cardiotoxic properties?
Mitoxantrone
Teriflunomide side effects
◦Steven-Johnson Syndrome, liver failure, neutropenia, respiratory infection, activation of TB, alopecia, neuropathy
Baclofen, Dantrolene, Diazepam, Tizanidine, Tiagabine, Gabapentin, Pregabalin, Botulinum toxin type A. Can all treat what type of MS side effects?
Spasticity
Treatment goals of MS
•Improve overall quality-of-life and minimize long-term disability
•Altering MS exacerbations or relapses
•Decreasing the number of lesions on MRI
•Avert brain atrophy
Interferon B has what side effects?
◦Depression, flu-like symptoms, injection site reaction
Natalizumab side effects
◦Depression, fatigue, respiratory infection, arthralgia
Teriflunimide things to monitor
◦CBC, LFTs, blood pressure, pregnancy, TB test
Propantheline, Oxybutynin, Dicyclomine, DDAVP, Self-catheterization, Imipramine or Amitriptyline, Prazosin, Botulinum toxin type A, Silfenacin. Are all ways to treat what type of MS symptoms?
Bladder
First line drug class in treating MS?
•Interferon Formulations
What labs should be monitored for Interferon B?
◦CBC, CMP, thyroid functions
◦(baseline, 1 month, q 3 months x 1 year, then q 6 months)
Monitor what with Natalizumab?
◦MRI, LFTs
This drug is pregnancy catagory X
Teriflunomide
Amantadine, Antidepressants, Modafinil, Methylphenidate, Dextroamphetamine, Armodafinil. Can all be used to treat what in MS?
Fatigue
2nd line drug class in treating MS?
•Monoclonal Antibodies – use when patient failed other therapies for later stage disease
Side effects for Mitoxantrone
◦Bone marrow suppression, neutropenia, cardiotoxicity, AML, nausea, vomiting, diarrhea
Fingolimod side effects?
◦Lymphocytopenia, macular retinal edema, AV block, infection
Dimethyl Fumarate side effects
◦Flushing, rash, pruritis, GI discomfort, lymphocytopenia, increased LFTs, albuminuria
Carbamazepine, Phenytoin, Amitriptyline or other TCAs, Gabapentin, Lamotrigine, Pregabalin. All treat what type of symptoms in MS?
Sensory