Saturday, 21 July 2018

The influence of spinal cord volume loss

Although it is not always done, spinal cord imaging may help to see what is in store for your leg function.

Friday, 20 July 2018

How can we create a prevention study in MS? We need your help!

Many of you will have seen the previous post on Preventive Neurology and the new initiative we are setting up to work towards preventing MS. As many of the comments have identified, this is a difficult area to study. We have to find a way to start monitoring people before they develop the earliest signs of MS. 

                  

Thursday, 19 July 2018

We need feedback on our new listeriosis prevention pack - can you help?

We've now developed our listeriosis prevention pack and would like 10 people to test it out and give us feedback to improve it further. 













     


Wednesday, 18 July 2018

Stornoway research day series: Diagnosing and treating relapses

Dr Sarah Martin talks about how to define and treat a relapse in multiple sclerosis, for healthcare professionals working on the Western Isles.




Tuesday, 17 July 2018

Stornoway research day series: Biomarkers in MS

Doc Neuro Gnanapavan discusses biomarkers in multiple sclerosis, to an audience of healthcare workers on the Western Isles. She defines what biomarkers are, and why they are useful for diagnosing and monitoring MS. 





Monday, 16 July 2018

We need your thoughts

The MS Society in the UK is committed to finding treatments for progressive MS, and have ambitious plans to make that happen as quickly as possible.

They have been asking the question
Which existing drugs could help in progressive MS?

Can you help?

Remyelination. Is ivermectin the next great thing or something dangerous?

What do Remyelination, Parasites and Collie Dogs have in common?

Sunday, 15 July 2018

How do CD20-depleting antibodies work..To T or Not to T that is the Question.

As soon as rituximab and then ocrelizumab, which are both CD20 depleting antibodies, were shown to influence relapsing MS, implicating B cells as a target for MS.

We had a flow of papers indicating that T cells express weak amounts of CD20. This view is trotted out time and time again, if you mention B cells as an issue.

These T cells are depleted by rituximab and so the T cell biologists have clung to the idea that rituximab works by depleting T cells.

Palanichamy A, Jahn S, Nickles D, Derstine M, Abounasr A, Hauser SL, Baranzini SE, Leppert D, von Büdingen HC. Rituximab efficiently depletes increased CD20-expressing T cells in multiple sclerosis patients. J Immunol. 2014;193:580-586.

Is this a desperate view to cling to? 

I think so

(A) The Tcellers are happy to accept that depleting 5% of T cells (i.e. the CD20+ T cell subsets) inhibits MS, whilst dismissing the fact that 70% depletion of (CD4) has minimal effect. This makes minimal sense to me

(B) However, it is not only CD20 that implicates activity on B cells. 

Do T cells express Bruton Tyrosine Kinase and CD19, because these B cell depleting agents also work in relapsing MS.

The answer is here.

Schuh E, Berer K, Mulazzani M, Feil K, Meinl I, Lahm H, Krane M, Lange R, Pfannes K, Subklewe M, Gürkov R, Bradl M, Hohlfeld R, Kümpfel T, Meinl E, Krumbholz M. Features of Human CD3+CD20+ T Cells. J Immunol. 2016;197:1111-7. 


"These cells display a lower level of CD20 than B cells and lack markers typically found on B cells such as HLA-DR, CD40 and CD19".

"We sorted CD3+CD20+ cells, CD3+CD20 T cells, and CD19+CD20+ B cells from healthy donors to compare their transcript levels of CD3, CD19, and CD20 by quantitative PCR"......they got


Yep the same result, the CD20+ T cells are not going to be hit by CD19-depleting antibodies.

So can the effect of CD19 depleting antibodies be explained via a T cell mechanism?

Maybe its time to think that really CD20 works, because its depleting B cells.

Saturday, 14 July 2018

Stornoway research day series: Using technology to support an MS service

Iain Trayner runs a technology enabled care (TEC) programme on the Western Isles. They research, source funding and roll out digital technology that supports patient care.




Friday, 13 July 2018

Stornoway research day series: Symptomatic problems

Dr Pushkar Shah discusses symptomatic treatments for MS, as opposed to disease modifying treatments. What treatments are out there to alleviate MS symptoms?