BBC News, By
James Gallagher, Health and science reporter, 10 October 2013
Related
Stories
If you
regularly walk past a newspaper stand, then "Alzheimer's cure" or
"Major Alzheimer's breakthrough" headlines will be a familiar sight.
And here we are again.
UK
researchers have, for the first time, used a chemical to prevent the death of
brain tissue in a neurodegenerative disease.
One major
difference this time is that sensible, cautious scientists are suggesting the
latest discovery could be one for the history books.
Nearly
every report contains this quote from Prof Roger Morris, at King's College London:
"This finding, I suspect, will be judged by history as a turning point in
the search for medicines to control and prevent Alzheimer's disease."
So what is
it about the latest study that generates a rare level of excitement? And is a
cure really on the cards?
Significant
moment
The prime
source of excitement is that a chemical has stopped the death of brain cells,
in a living brain, that would have otherwise died due to a neurodegenerative
disease.
This is a
first and a significant one. When I interviewed Prof Morris on Wednesday night,
he used the word "landmark" repeatedly.
In the
Medical Research Council study, the mice had prion disease, similar to the
human form of mad cow disease. Within eight weeks, their brains deteriorated so
badly that memory and movement were noticeably affected. By the 12th week, the
mice were dead.
But when
the same infected animals were given a "drug-like compound", they
survived the 12 weeks with no sign of the brain dying. The chemical also caused
side-effects including weight loss and diabetes.
The second
tier of excitement comes from the potential implications.
The
chemical helps the brain cope with producing broken proteins. In Parkinson's
the alpha-synuclein protein goes wrong, in Alzheimer's it's amyloid and tau, in
Huntington's it's the Huntingtin protein.
The brain's
response to all of these diseases is to shut down protein production, but this
eventually kills brain cells. The chemical helps brain cells ignore the broken
proteins, keep functioning and stay alive.
In the
past, research on neurodegenerative diseases has focused on what is unique to
that condition. This approach looks at what is common to all of them and if it
really does work, then it raises the prospect of a single drug to cure or
prevent nearly all forms of neurodegeneration. Another reason for excitement.
Lead
researcher Prof Giovanna Mallucci said: "If it stops brain degeneration in
its tracks, it will halt disease in people who have already got it. And if we
can detect early disease, it will prevent a lot of degeneration.
"The
hope is to arrest the process of brain cell death, and that's what's so
exciting."
So where's
the cure?
It's worth
emphasising the precise findings of the study - a toxic chemical, which the
researchers will not even call a drug, halts the death of brain cells in mice
with prion disease.
Clearly
this is not a cure, but it points the way to one. It gives drugs companies and
scientists something to work with.
 |
A section of brain with Alzheimer's disease on
the left shows the marked loss of brain cells |
That
process will take time, probably more than a decade, with no guarantee of
success at the end.
And the
recent history of medical research is littered with examples of drugs that
looked promising in mice, but were a bitter disappointment when tested in
people.
This
chemical works in a mouse brain of 75 million neurons. A more complex human
brain built from 85 billion neurons is a far different challenge.
Dr Simon
Ridley, the head of research at Alzheimer's Research UK, told the BBC patients
would be facing a long wait.
"I'm
afraid it's far longer than any of us would like," he said.
"I
think there are many people who'd be desperate for any news of new treatments,
which they would like to take today.
"I think
at this stage we could be looking at a decade before we'll know whether this
will be effective."
This study
is certainly exciting scientifically. But it might take until 2023 to see
whether it truly deserves its place in the history books.
Related Article:
Kryon Q&A
Question: Dearest Kryon: I've read the question and answer on people with diseases of the mind - for example, Alzheimers and dementia. But I have more questions. You say that people have chosen this path and that the lessons are for us. As I work with these people, I'm wondering if there is any stage where there could be a reversal of the condition, and if so, with what methods? The people in the hostel are so drugged up, and there's a mind-set with the authorities that no "alternate" therapies work - although they're using colored lights. (Sadly, the diversional therapist told me she doesn't know what color therapy is.)
From a spiritual point of view, what is the best way to work with these people - talk to them as though they were normal, or go along with their imaginings? I've been told that they need to be kept quiet, especially toward evening. However, I've found that with one woman who mostly paces saying very little, the more childlike I am (dancing and singing makes her happy), the more she talks. I could go on and on - could you please enlighten me further?
Answer: I will answer the second part first. Love those who are in this condition. Find out what makes them smile... and then make them smile. The best you can do in a facilitation of this condition is to somehow create joy. Even in their confusion they can laugh at situations and be creative. They'll also remember you better as the one who creates this emotion. Each is very different, but in general, try to find their "happy" button and push it as often as you can. They will remember that.
Right now you're perched upon some important discoveries that will be able to reverse these conditions to a large degree. But just as the paraplegic who regains their nerve connections must than relearn how to walk, suffering much pain, there will be this attribute with a regeneration of the mind. Even if new cells are created, they won't necessarily have the old memories, but they can be trained to be healthy and be ready for new memories.
So someday these will have the ability to halt the progress of the degeneration of cells that are being taken, and instead grow new pathways around them. Some will be able to "reconnect" to certain kinds of memories (like recognition) but will have to relearn what the association of recognition actually means. So history and events might have to be studied and relearned... sometimes even things like reading, also. The pain will be that the individual will regain mental health and will realize exactly what has happened.
Your stem-cell research is very important, and you're reaching a point where you'll be able to use birth cells that aren't embryonic, but every bit as potent for research... thereby sidestepping all moral issues. Look for this in the next few years.
