The other night I attended an author’s reading of a first-time novel. The main character in the novel is an immigrant computer programmer with terrible social skills trying to navigate his way around the American culture. His mistakes are endearing and a good mirror into the idiosyncrasies of American culture. In the question and answer [...]
The Myth of Alzheimer’s: Book Review
I just finished reading Peter Whitehouse and Daniel George’s book The Myth of Alzheimer’s. How dare you! you want to say when you first see the title. My mother went through hell with this disease, and you’re saying it’s all imaginary? HOW DARE YOU! Then you read the book and understand. I’m not sure I [...]
Hair
This past week has been a little brutal on my ego. My fictitious self (the me I hold in high regard) has seen its reflection in various external realities and has taken a mortal blow. At least I hope it has. You see, I’ve had to acknowledge all in one breath that I’m not as [...]
Slashing the Costs of Prescription Drugs and Alzheimer’s Care
We are continually hearing that Medicare is going to go bankrupt by mid-century thanks to the skyrocketing costs of an aging population in need of prescription drugs and dementia care. Medicare Part D costs to the government in 2010 were $62 billion and are projected to climb to $150 billion by 2019. And Medicare costs [...]
Oliver Sacks: a Personable Approach to Neurology
This weekend I picked up and devoured Dr. Oliver Sacks’ The Man Who Mistook His Wife for a Hat—a fascinating collection of clinical tales of neurological aberrations accompanied by philosophical and social observations regarding the people affected by these aberrations. One of the first things that hit me as I read these tales was remorse [...]
So, the music itself was great. Plus, Greg was a gem of an entertainer, weaving funny little stories throughout his performance, making us laugh and shout out responses. Very audience-attentive.
Which brings me to the point of this post.
See, when Greg first came out on the stage, he sat in front of a rickety old pump organ
that was set up next to his keyboard (just two of about sixty eight instruments he played that night). And he told us the story of how he went out to buy a computer that day and ended up buying this antique organ instead. A 1911 organ to be precise.Now, the whole time he was relating his organ-acquisition saga, I was thinking of Mom, because this was the exact kind of organ that Mom played in church down in Brazil for many years. And I was picturing Sunday afternoons when Mom would fold up the organ (or have one of us kids do it), hoist it into the van and drive it to one of the favelas around town for a Bible club. I pictured snotty little kids running to the van, touching the organ as it was set up, and singing their lungs out at the sound of Mom’s squeaky playing.
At the end of his story, Greg paused, looked at the organ, and said, “I’ll have to name her.”
Well. It didn’t take two seconds for me to think of the perfect name for that organ. So I shouted out “Ruth!”
And it didn’t take Greg two seconds to feel it in his bones that the name fit. He chuckled, muttered something about my timid voice (I thought I’d shouted), and agreed that the organ should be named Ruth.
It made my day. Made my niece’s day, cuz now her Greg Laswell has an organ named after her grandmother (hmm. Is there any good way to reword that sentence?).
But this story means even more to me for the irony in it. You see, Greg sings a lot about trying to forget. Trying to forget a love. Trying to forget the pain of a lost love. And here he is now, lugging around a little pump organ
whose namesake–Ruth–wants more than anything else in the world to remember. Too weird. One is cursed by memory, the other by the loss of it.Anyway. I have to thank Greg for a fun night that will only grow in significance as I retell this story.
And you have to keep an eye out for Greg. In case, you know, he turns out to be somebody. Like Ruth.
Rose Lamatt recently sent me her book Just a Word: Friends Encounter Alzheimer’s—the true account of her best friend’s rapid decline after being diagnosed with Alzheimer’s, and of the author’s life as a caregiver. After reading (or should I say “crying”) my way through this book, I decided I had to recommend it to all my readers as well.
I read and liked Still Alice, but it doesn’t hold a candle to Just a Word when it comes to describing the wretchedness of Alzheimer’s and of caregiving and of life in a nursing home after home-based caregiving is no longer an option. Just a Word may not be as polished a work as Still Alice (my editor’s eyes kept making corrections until the story sucked me in), but this book will give you the real thing: Alzheimer’s with poop and bruises and the constant anguish of those trying to love and care for its victims (unlike the sanitized version in Still Alice).
In all my reading on Alzheimer’s, I have not found anything so powerful as this book to stir a desire to rid this disease from the face of the earth!
Yesterday a social worker came to the house to evaluate Dad for possible in-home care assistance. It was a thoroughly humiliating experience for Dad.
The list of questions issued were designed to find out exactly what Dad can and cannot do for himself. The fact that Dad can’t do much at all for himself is something we try not to throw in his face even as it happens. Every time Dad can’t sit in the chair correctly and a struggle ensues to find the right verbal or physical cue to help him do so, Dad’s self-esteem takes a dive. Every time he can’t find a certain room in the house… can’t tell time… etc. So when a list of questions comes along and lays out each and every one of his deficiencies in one sitting, piling them up in front of him like so much garbage to be hauled around, well, it would be an understatement to say it was humiliating.
The further we got into the questionnaire, the more Dad’s countenance fell. It got to the point that I let Dad tell the social worker that he had no problem doing x or y or z, even though I knew the truth.
We ended up somewhere between the truth and Dad’s dignity, honoring neither.
At the very end, this wise social worker asked a question that was clearly not on the list. She asked, “Do you like to fish?”
You could see the dark cloud lift from over Dad’s beaten-down self! A tiny bit of affirmation in the midst of all that pummeling! Never mind that Dad can’t do it anymore; the question at least allowed him the pleasure of showing a positive side of himself. For once, he got to answer a very truthful “yes!”
And that made me wonder: why can’t we–in the pursuit of scientific correctness–remember the spirit of a man? Why can’t we sprinkle questionnaires with bits of affirmation for the sake of dignity alone? Would it hurt science or government to ask “what’s one of your favorite books?” to a woman applying for food stamps? Or “what superpowers would you most like to have?” to a veteran seeking disability assistance? Shoot, while I’m at it, can we change the the category from “seniors and people with disabilties” to “seniors and people with abilities”? There are always things we can still do; things we still like; things we still dream about.
Just stuff I wonder.
And you? Do you have any beef with questionnaires?
I just finished reading Peter Whitehouse and Daniel George’s book The Myth of Alzheimer’s.
How dare you! you want to say when you first see the title. My mother went through hell with this disease, and you’re saying it’s all imaginary? HOW DARE YOU!
Then you read the book and understand.
I’m not sure I agree with the entire revision of the story of Alzheimer’s, but I did like the tenor of the book. It’s compassionate toward those who suffer from dementia and even more so toward those who suffer from the stigma of dementia. It is angry at Big Pharma—the machine that markets fear of dementia so they can sell their mostly ineffective drugs. And it is angry at the medical establishment that succumbs to that marketing—toward doctors who accept gifts (in disguise) in exchange for prescribing Big Pharma drugs to their patients.
Dr. Whitehouse stresses that he was one of the cogs in that machine. His research helped write the story of Alzheimer’s as a disease, and his advice was sought after by pharmaceutical companies as they worked to develop drugs like Aricept and Namenda.
He was part of the machine until he realized he had helped create a monster that now feeds on the stigma of dementia such that no one is allowed to age with dignity if aging includes any level of dementia. The stigma of dementia has been blown up so large that anyone with a tinge of it is considered finished. People are no longer a mixed bag of assets and deficits. Once a person’s memory starts to go, he has no value unless the “deficit” is “fixed.”
Dr. Whitehouse points out instead that even with cognitive deficits, human beings still have plenty of assets to draw from in living fully satisfying lives.
So what is the myth?
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Trying to follow Alzheimer’s research sometimes feels like walking through an Escher exhibit: the contradictions can border on the absurd.
Take the new findings on SIRT1 and its relation to Alzheimer’s. Research after research shows that SIRT1 apparently protects against Alzheimer’s:
25 July 2010. The sirtuin protein SIRT1 is emerging as an important player in learning and memory, and may have potential as a therapeutic target in Alzheimer disease. Fresh on the heels of a July 11 Nature paper that demonstrated a crucial role for SIRT1 in memory (see ARF related news story on Gao et al., 2010), two new papers add to the growing body of evidence that SIRT1 helps keep brains healthy. In a paper appearing July 21 in the Journal of Neuroscience, researchers led by Valter Longo at the University of Southern California, Los Angeles, show that a SIRT1 knockout mouse has numerous defects in learning and memory. This finding implies that SIRT1 could have a protective role in AD, and indeed, in a July 23 Cell paper, researchers led by Leonard Guarente at the Massachusetts Institute of Technology, Cambridge, report that overexpression of SIRT1 can decrease Aβ production and the number of amyloid plaques in a mouse model of AD.
You’d think, then, that more SIRT1 is better for Alzheimer’s and less is worse. But:
Michán and colleagues also examined a transgenic mouse that overexpressed SIRT1 16-fold in the brain. On this normal mouse background, the authors found that this massive SIRT1 overexpression conferred no improvements in learning or memory, and that synaptic function was unchanged except for a slight increase in neuronal excitability.
And though less is worse, vitamin B3 in the form of niacinamide has been shown to “cure” Alzheimer’s in mice by decreasing the expression of SIRT1: Nicotinamide Restores Cognition in Alzheimer’s Disease Transgenic Mice via a Mechanism Involving Sirtuin Inhibition and Selective Reduction of Thr231-PhosphotauWe evaluated the efficacy of nicotinamide, a competitive inhibitor of the sirtuins or class III NAD+-dependent HDACs in 3xTg-AD mice, and found that it restored cognitive deficits associated with pathology. Nicotinamide selectively reduces a specific phospho-species of tau (Thr231) that is associated with microtubule depolymerization, in a manner similar to inhibition of SirT1. Nicotinamide also dramatically increased acetylated -tubulin, a primary substrate of SirT2, and MAP2c, both of which are linked to increased microtubule stability. .
When asked about this contradiction, Dr. Greene, one of the researchers on this paper says,
You are correct – there are contradictions between the role of Sirt1 in AD. Regardless of these, nicotinamide has good effects in the preclinical models, and has been shown to now be effective for other neurodegenerative diseases as well. Sirt1 may be beneficial at some stages of the disease, and not others – we cannot [reconcile] these differences at this stage, but our research says that nicotinamide is highly effective in preclinical models and that inhibition of Sirt1 plays a role in these effects.
Say, what?
My mind wants to hyperventilate with the contradictions, but then I remember the story of the three blind men describing an elephant and realize the contradiction exists only because we do not yet fully understand.
And that’s what drives research onward.
RELATED POSTS:
Alzheimer’s and Glucose Metabolism: the Niacinamide Experiment Part 1
Does Alzheimer’s Take Guts? The Niacinamide Experiment Part 2
The following describes the knowledge gained by Sharlene in the course of caring for both her parents with Alzheimer’s. It is not necessarily a reflection of my views, but I thought it good to publish the research of someone who has an insider’s view of Alzheimer’s dementia.
Sharlene Spalding is a naturopathic consultant in the village of Casco, ME. She is a former primary caregiver for two parents with AD. She holds a master’s degree in natural wellness. Sharlene is an excellent resource in natural healing and a hound dog when it comes to research. Because of what she knows now, she is committed to a pharmaceutical-free home that revolves around organic foods and herbs. You can visit her website at The Village Naturopath.
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As an artist whose artistic mother also has Alzheimer’s, this movie hit home for me. It was like watching my own mother lose all her nouns, then her knowledge of interpreting nouns on a canvas, and finally her knowledge of self.
In this film, the mother’s sorrow and fear are mitigated by the son’s desire to hang out with her. I only hope his desire lasted beyond the making of the film. For the sake of all those with Alzheimer’s, I hope love lasts beyond the time the disease is an interesting artistic or scientific curiosity. I hope it lasts beyond the time a diseased person has anything at all to offer.
Eleanor Cooney’s Death in Slow Motion: a Memoir of a Daughter, Her Mother, and the Beast Called Alzheimer’s is not just one book. This is two tales in one: a memoir of desperate caregiving and a biography. The memoir part follows Eleanor’s hyperventilated, drug and alcohol-sustained trek through the five stages of Alzheimer’s caregiving for her mother, Mary Durant, and the biography chapters relate the story of her mother prior to Alzheimer’s (think Dorothy Parker with abundant sex and alcohol) ending with a very rare love story between Mary Durant and Michael Harwood (her third husband). Having the story weave through these two windows makes the reader feel the compounded tragedy of the beast called Alzheimer’s.
You will laugh, clench, oggle, envy, and cry as you read this literary gem.
As a bonus, Cooney includes a previously unpublished short story written by her mother (in a style I would call Flannery O’Connor cum wicked smirk).
Buy it. Read it. Pass it on.
P.S. People who read this book will probably also buy and read Mary Durant and Michael Harwood’s On the Road with John James Audubon.
Mine is already in the mail.
Because it’s Fall and crisp out and a good time to sit down to a good movie, I’m posting one of my favorite suggestions for a movie that deals with Alzheimer’s.
How To Kill Your Neighbor’s Dog is an unfortunate title for a great movie about self-centeredness and the cure for immaturity. The story centers around a playwright with writer’s block who must exit himself in order to find inspiration. Alzheimer’s isn’t the main theme of the movie, but it is present in the background, and the most lucidly-spoken scene in the movie is between the mother-in-law with Alzheimer’s and her brilliant, unhappy son-in-law.
Thought I’d pass it on.
Here’s a fascinating animation superimposed over a lecture by psychiatrist and writer Iain McGilchrist on the two hemispheres of the brain. You may have to watch it 15 times to really get it.
We are continually hearing that Medicare is going to go bankrupt by mid-century thanks to the skyrocketing costs of an aging population in need of prescription drugs and dementia care.
Medicare Part D costs to the government in 2010 were $62 billion and are projected to climb to $150 billion by 2019. And Medicare costs for Alzheimer’s care will increase more than 600 percent, from $88 billion today to $627 billion in 2050.
Here is a double-barreled solution to the costs of Medicare Part D and Alzheimer’s care: replace prescription drugs with equally effective placebos and employ mildly-cognitively-impaired individuals as healthcare enhancement agents.
This is not a joke. Here is why this would work and save the federal government billions:
Regarding Placebos
Placebos—if delivered properly—could potentially be more effective and considerably less costly than many current prescription drugs.
Here is an example of an experiment with placebos for a “purely physical ailment”:
One group was simply put on a waiting list; researchers know that some patients get better just because they sign up for a trial. Another group received placebo treatment from a clinician who declined to engage in small talk. Volunteers in the third group got the same sham treatment from a clinician who asked them questions about symptoms, outlined the causes of [their ailment], and displayed optimism about their condition.
Not surprisingly, the health of those in the third group improved most. In fact, just by participating in the trial, volunteers in this high-interaction group got as much relief as did people taking the two leading prescription drugs for IBS. And the benefits of their bogus treatment persisted for weeks afterward, contrary to the belief—widespread in the pharmaceutical industry—that the placebo response is short-lived.
It has been found that placebos can sometimes work even better than the leading prescription drug for any given disease, with certain factors contributing to their effectiveness:
Yellow pills make the most effective antidepressants, like little doses of pharmaceutical sunshine. Red pills can give you a more stimulating kick. Wake up, Neo. The color green reduces anxiety, adding more chill to the pill. White tablets—particularly those labeled “antacid”—are superior for soothing ulcers, even when they contain nothing but lactose. More is better, scientists say. Placebos taken four times a day deliver greater relief than those taken twice daily. Branding matters. Placebos stamped or packaged with widely recognized trademarks are more effective than “generic” placebos. Clever names can add a placebo boost to the physiological punch in real drugs. Viagra implies both vitality and an unstoppable Niagara of sexy.
If you’re thinking that the suggestion of using placebos is unethical, check out this study:
“Not only did we make it absolutely clear that these pills had no active ingredient and were made from inert substances, but we actually had ‘placebo’ printed on the bottle,” says Kaptchuk. “We told the patients that they didn’t have to even believe in the placebo effect. Just take the pills.”
The participants were monitored for three weeks and, at the end of the trial, 59% of the patients given the placebo reported ample symptom improvement as compared to 35% of the control group. Furthermore, participants who took the placebo had rates of improvement about equal to the effects of the most powerful IBS drugs.
Deception is unethical. Honesty is not. If there is a joke it’s in the current medical practice of prescribing expensive drugs that are sold without the most important ingredient that made them effective in the trials—the same ingredient that makes placebos effective.
As we would all imagine, the most important factor in the effectiveness of placebos is the doctor’s bedside manner. That is, the presence of compassion in the treatment of an ailment.
Regarding a Cognitively Impaired Workforce
The double-barreled solution in employing people with mild dementia as healthcare enhancement agents is that we would save on prescription drugs, hospital recovery times, and also be assigning purpose to people with mild cognitive impairment. Folks whose initial downward slope in the aging process is a bit early are not an “unproductive force in the economy.” There is richness of intellect, creativity, and compassion that could be tapped rather than stomped on per our current dementia stigmatization.
There was a time when people with physical disabilities couldn’t get jobs. But we’ve come a long way in learning of the tremendous contribution that the disabled can give, and have accommodated the workplace for such individuals with ramps and wider doorways and elevators in order to reap this benefit. Why not do the same for MCI individuals? Why are we instead discarding this tremendous resource?
In reading blogs of people with early-onset Alzheimer’s, one of the biggest stresses for both the sufferer and the government is issuance of social security disability benefits. Why not offer employment rather than cash benefits? If compassion at the bedside of a sick person dramatically speeds the healing process, think of the savings accrued by employing love & joy-givers in hospitals, clinics, nursing homes?
In his book The Gift of Pain, Dr. Brand lists the factors that enhance pain and prolong the healing process: fear, anger, guilt, loneliness, boredom, helplessness. He then describes how perfectly suited many institutions are in promoting these feelings with their sterile settings, uncommunicative doctors and nurses, boring surroundings (and now that nurses spend all their time at computer terminals per our new streamlining guidelines, these factors are further compounded). Healthcare institutions could cut their costs by employing people to:
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Design and paint interesting scenes on hospital ceilings
Play instruments in institutional corridors (not just harps, please!)
Make dolls for nursing home patients
Read aloud to patients, or simply visit
Reupholster institutional furniture with fun fabrics
Take certified dogs into institutions for cheery visits
The savings in dollars would be compounded all around, and the savings in dignity for all healthcare users a welcome change for our society.
The Alzheimer’s Research Paradigm
If you’ve every studied philosophy of science, you’ll recognize that current research in the field of Alzheimer’s Disease is battling paradigms. The funny thing is, the Alzheimer’s field hasn’t even reached the level of robust theory, yet there is strife in the ranks of researchers fighting over the direction inquiry should take:
“Kill the amyloid plaque“Beta amyloid is a protein fragment snipped from an amyloid precursor protein (APP). In a healthy brain, these protein fragments are broken down and eliminated. In Alzheimer’s disease, the fragments accumulate to form hard, insoluble plaques.”!”
“No, viva le beta amyloid“Most people think abeta is junk,” a toxic byproduct of other activity in the brain, said Rudolph Tanzi, director of genetics and aging at Massachusetts General’s Institute for Neurodegenerative Disease. “This says tread carefully. It may play a normal, essential role in the brain and be part of the way the brain protects itself.”!”
“Forget amyloid. It takes tauThe appearance of elevated tau in CSF is important, but merely a reflection of the disease process. What is not at all touched upon and in fact routinely neglected in the press, is that the tau protein drives neurodegeneration in a very direct way, much more so than the beta-amyloid protein, which is the target of the cited study. In fact, without abnormalities of tau there is no Alzheimer’s disease. Many older individuals develop beta-amyloid deposits in their brains and never experience Alzheimer’s disease, another aspect generally not mentioned. Conversely, if only tau is abnormal, and beta-amyloid is not involved, there is always a terminal neurological disease. to tangle.”
“Ha! The biomarkerThe thing with biomarkers is that they only work/make sense if the biological processes behind a disease are fully or at least largely understood. Only then is it possible to choose a proxy (the biomarker) for the final result (optimally a cured patient). Since the processes behind Alzheimer’s (more generally in the CNS) are badly understood this area is not well suited for biomarkers emperor has no clothes!”
“Wait. Isn’t it all about insulin resistance?A new short-term trial of intranasal insulin in Alzheimer’s patients and people with mild cognitive decline showed benefits on certain memory and functioning tests”
“Nix all the above. Just get quality sleep,“Levels of the protein increased in mice during the night — when mice are mostly awake — and fell during the day when mice sleep. The longer the mice stayed awake, the more amyloid-beta levels increased, the team found. The team also measured amyloid-beta levels in the cerebral spinal fluid of some healthy young people and found the same pattern observed in the mice — amyloid-beta levels increase when people are awake and fall during sleep.” and you’ll be fine.”
If you think this is funny, these basic statistics will sober you up:
* As of 2010, there are 5.4 million people in the US with Alzheimer’s
* Almost half the people over 85 have Alzheimer’s
* When the baby boomers come of Alzheimer’s age, the costs of care for this disease alone will cripple Medicare and Medicaid
* Federal funding for research into a cure is dropping fast
* YOU will be paying for either your own care or for that of a loved one if a cure is not found. And YOU will either be grossly neglected when this disease hits you, or you will die the slow death of stress from caregiving for someone else.
Bottom line: research into Alzheimer’s—its cause(s), treatment, and cure—is alarmingly urgent and terribly underfunded.
There are plenty of people out there who believe we shouldn’t put money into research at all, because so far nothing has been found to stay the course of “Alzheimer’s” dementia, and the whole drug industryAnother new frontier for drug companies’ illicit profits. Vaccines, invented “syndromes” and now, allegedly predicting who will come down with what disease and medicating them for decades before the possible advent of that disease. With no certainty the disease will manifest this is pure sham. And the pharmas will profit double from their con job — think of the so-called “mind drugs” that will be prescribed to mediate the untold psychological effects on people given future death sentences regarding this or that disease! is just a ploy to line the pockets of the pharmaceutical fat cats. If you’re in that group, you can stop reading this now. If, however, you would really like to see your Mom or Dad or Yourself able to have a meaningful conversation with your loved ones and know who you’re talking to—hopefully for the rest of your life—read on, because the question isn’t whether or not to research. The question is where do we put our research dollars?
Not a simple answer when you consider that the reigning paradigm for Alzheimer’s research is serious question.
Let me explain with recent findings from my own readings:
A couple weeks ago I attended a Cure Alzheimer’s Fund webinar presented by Dr. Rudy Tanzi (of Massachusetts General’s Institute for Neurodegenerative Disease) on Alzheimer’s research and drug development.
Beta Amyloid: Clues From Our Genes
Dr. Tanzi’s group is in the “clues from our genes” pool (looking at the genes as a starting point rather than, say, looking at diet first). The dominant belief in this pool up until recently is that beta amyloid plaque accumulation in the brain, followed always by tau tangles, are the two main biomarkers for Alzheimer’s Disease. That is, where there is Alzheimer’s, there is an overabundance of beta amyloid plaque and destruction caused by tau in the brain. Also, a higher load of plaque correlates with a higher degree of dementia (see slide from webinar). Plus, as this accumulation progresses and moves to different parts of the brain, there is a parallel manifestation of symptoms.
The connection seems pretty obvious. And Dr. Tanzi certainly has the credentials: back in the 80’s when he was studying Down’s Syndrome, he realized they had isolated the gene responsible for amyloid “plaque” deposits in the brain, and—given that all Down’s Syndrome sufferers end up with Alzheimer’s—thought to make a link between this gene and other cases of Alzheimer’s. From there it was one success after another, with Dr. Tanzi participating in the discovery of three of the four known gene mutations causing early-onset Alzheimer’s (these are the genes that guarantee you will get Alzheimer’s). Granted, early-onset AD accounts for only 5% of Alzheimer’s cases, but it does give weight to the conviction that Alzheimer’s has a genetic link. More recent studies looking at family history suggest that up to 80% of Alzheimer’s cases are genetically influenced (see slide from Tanzi’s presentation).
The presentation is convincing enough until you start reading the commentary in the field and start learning that current direction of research into the causes of Alzheimer’s“It’s one reason why the so-called amyloid hypothesis, which holds that to cure Alzheimer’s you have to curtail Aβ, is in question these days: There’s little evidence so far that fighting Aβ leads to a functional difference to patients.” is highly questioned.
Researchers coming on the scene today, for example, would argue that the plaque theory is circular reasoning. You can’t say that plaque leads to Alzheimer’s if you first define Alzheimer’s as “dementia with plaque.” And when your theory states that plaque accumulation leads to Alzheimer’s, the automatic null hypothesis is that where there is plaque (in copious amounts) you will always find dementia, and when plaque is cleared, dementia will go away.
But this has not born out. It is now known that “roughly one-third of all elderly adults have such plaques in their brains yet function normally.” It has also been proven that the elimination of beta amyloid plaque (achieved by the “Alzheimer’s vaccine”) does not cure dementia.
Thus the paradigm shake-up. Why continue with the biomarker research when the facts don’t bear an airtight connection? Is the “clues from our genes” group too heavily invested financially and psychologically in this line of research (as some suggest) to give it up as dead?
Dr. Tanzi responds to these fears in his recent presentation. He didn’t use the word per se, but nuance was the main come-back. All theories undergo refinement, and this plaque-causes-dementia theory is no exception. Looking at the genes may have lead to wrong conclusions in the past, but there are still some pretty interesting clues to follow going forward.
Here is a crude rendition of the protein-level pathology in Alzheimer’s:
Beta amyloid (Aβ) is cut off from its precursor protein; Aβ links to other ab in small clusters; Aβ kills nerve synapses; Aβ accumulates into plaques
For the past twenty years, research has focused on improving the symptoms of dementia by eliminating the final clusters of beta amyloid (plaques). Looking at the little diagram above, different drugs targeted the beta amyloid at different points on the linear progression toward plaque: Flurizan targeted the process that snipped the Aβ off its precursor protein; Alzemed tried to block the aggregation of Aβ; Dimebon was designed to protect the neurons from Aβ; one drug successfully immunized the brain against Aβ (resulting in clearance of plaque from the brain, inflammation in the brain, and progressive dementia); and finally, drugs were developed (Aricept and Namenda) to act at the symptomatic level.
None has had any significant effect“No treatment is available to slow or stop the deterioration of brain cells in Alzheimer’s disease. The U.S. Food and Drug Administration has approved five drugs that temporarily slow worsening of symptoms for about six to 12 months, on average, for about half of the individuals who take them.” on the brain’s function in memory tests.
Tanzi’s response? Perhaps the reason drug trials fail is that the potency of the drug is off—either too weak or too strong—and funding for a subsequent trial is cut off. Or perhaps researchers need to stare at the diagram a little longer and find out whether beta amyloid needs to be left to do some mission, then cleared before it wreaks havoc on the synapses.
Which is exactly what happened with Dr. Tanzi—a little stroll through the lab, a light-bulb moment, and Tanzi discovers that beta amyloid kills bacteria and yeast like nobody’s business. Beta amyloid is a good guy? The plaques themselves are just “a field of bullets” left over from some major battle?
Definitely worth an investigation. A new direction.
To Fund Or Not to Fund
So it turns out that looking at clues from the genes is not a paralyzing avenue of research after all. Is the paradigm really dead, or just needing refinement? In the new direction of Alzheimer’s research, Dr. Tanzi’s findings have lead to a more recent drug (PBT2) that takes the “antibiotic” role of beta amyloid into account as it tries to clear its toxic leftovers. Do we pull the plug on funding just when the story is getting really interesting?
The competition out there is fierce. You would think from some of the stinging accusations
aimed at the “old school” research that funding for groups such as Tanzi’s should be questioned. Yet, as the webinar pointed out, “the vast majority of our knowledge about AD and AD drug discovery has been based on studies of the four known AD genes over the past two decades.” That’s old school success.
On the down side, “about 70% of AD genetics is unexplained by the four known AD genes.” On the further down side, it’s going to take A LOT of funding to find the genetic culprits for the rest of Alzheimer’s cases. And genetics is still only one of several approaches to studying this disease! (Besides, paradigms don’t die until a better one supersedes it, and there is no airtight theory out there yet).
Do we put all our eggs in one basket? What if there aren’t enough eggs to spread around to the different baskets?
Frankly, I don’t know the answer to this question.
There are a couple good reasons I think the Cure Alzheimer’s Fund group is worth supporting, though. One reason is the Cure Alzheimer’s Fund website itself. The Internet has plenty of faults, but it also has the advantage of open criticism. If you look at the comments sections of one of the papers put out by Tanzi’s group on the Alzheimer’s Forum, you’ll see an open debate. It’s free collaboration. It’s crowdsourcing at its best. I think it multiplies the value of your funding dollar.
Another reason is that I’ve suspected my own mother’s caseStay tuned for a post on this topic to be of possible bacterial/fungal originAt a speculative level, one alternative explanation would be that some cases of AD could result from a persistent CSF infection, or from a transient infection that went away but engendered a permanent Aβ response and its attendant immune modulation. and am dying to see what this group finds in their new line of research. The only thing I fear is the psychological barrier to this new approach.
A Taboo Research Project?
To be specific: the two agents being considered by Tanzi’s group as possible aggressors in the beta amyloid battle are Chlamydia and Candida Albicans. But looking at Candida Albicans as a possible cause of anything is TABOO in mainstream medicine. Just browse the comments section of a recent article in the New York Times about Candida Albicans, and you’ll see what I mean.
Will Tanzi’s group have the courage to fight all the enemies of research at the same time: tainted motives (the desire for personal glory), psychological entrapment (continuing in a line of research simply because it’s been going on for so long), and mainstream opinion about what is acceptable research (we do not look at X)?
I guess it’s going to take a lot of money to find out. Which brings us back to the basket issue.
Do we have to duplicate Alzheimer’s research at the Federal and State levels? The state of Texas, for example (being one of the top three states that will go broke paying for Alzheimer’s care in the future), is spreading its research egg money into several baskets:
* Science
* Prevention and Brain Health
* Disease Management
* Caregiving
* Infrastructure.
Why repeat this with every state, plus private groups on the side? Is there a way to get more collaboration between research groups? The well of needed funding is infinitely deep, so why are we digging multiple wells?
I guess part of the answer is that individual motivation for research (even if it is for personal glory) is the strongest kind you can find, and therefore the best engine for finding a cure. And likewise, education plus individual conviction will drive donations. There is certainly enough information available at one’s fingertips to give no one who is interested in a cure an excuse to sit on the sidelines!
So what will you do?
Because where there is a will, there will be a way to end the increasingly long goodbye.
For further reference:
Beta-Amyloid: An Antibiotic? (with a slew of interesting comments)
Alzheimer’s Brain Tangles Offer Clue To Worsening
Alzheimer’s Disease: No End to Dementia
New Potential Cause of Alzheimer’s Disease Detected
Alzheimer’s Scary Link to Diabetes
Follow the Alzheimer’s Breakthrough Ride journal
An video report on several intriguing theories of Alzheimer’s.
Mom has been pretty much without language for five years now. Three years ago she would occasionally call out “Ken!” (Dad’s name) once or twice a week, but other than that, her speech was a non-stop running chatter of “geri geri geri fica fica fica mao mao” and the like. Mostly two syllable experiments in sound. Ah. Also, occasionally–and as far back as 2 1/2 years ago, she would respond to the declaration “I love you” with “too too too too.” We wrapped ourselves in that response–a definite sign of comprehension and reciprocity.
Today we don’t even get the “too too too.” But we do get eye contact and a nod, which is just as good as sign of comprehension.
For all the times I’ve felt a thrill at the connection still possible with Mom via language, I didn’t have a picture of how thrilling it was for her to know that she knew something until one day–about 18 months ago–when I took her to the bathroom. We’d been having a very hard time getting Mom to urinate. She’d hold it for eight, twelve, eighteen hours. We massaged her, waited in the bathroom with her, gave her tons of liquid in hopes of getting her to release the contents of her bladder–to no avail.
One day I sat her down and begged her to go. “Mom, go potty. Let it out. Just let it out, ok?” She leaned over and made a shooing motion with her hand and repeated, “out?” I said, “yes, let it out.” She looked at the door, repeated the shooing motion (toward the door) and said “out” with the most excitement I’d seen from her in a long time. She was ecstatic at the small bit of comprehension she possessed at that moment. She knew the word “out!” She knew the word–it’s meaning–and it gave her significance.
I suppose it was akin to the feeling Helen Keller had at the comprehension of the word “water.” It opened up the world around her; gave her instant availability to connection with other human beings; empowered her to have a “self.”
I ache for Mom and her loss of language and all that has gone with it. But thanks to her, I am richer now that I know the power I possess with a vocabulary. Comprehension via language is such a huge gift (sorry to disagree, post-modernists)!
Now, if I can just stall the loss I already feel creeping in…
I took Dad for a walk tonight. It wasn’t a long walk. Dad was tired and didn’t really want to go. But he acquiesced to my prompting, and we walked to the end of the 50-yard driveway.
The whole time we walked, I supported Dad’s right arm. And the whole time we walked, Dad’s arm shook violently. By the time we got back, my arm was buzzed and aching.
Then it occurred to me that if Dad’s energy gets passed onto me in this bad way, perhaps we could harvest the energy in a good way. I suggested to him that we design something like the soccer ball recently invented by those Harvard girls—you know, the ball that stores the energy of a game’s worth of kicking into a battery that can then be used to light up the Third World.
Dad laughed.
But hey, why not harvest the energy generated by Parkinson’s tremors? Maybe we could even wire the energy back into the brain for deep brain stimulation therapy.
There’s got to be an up side to the down side of this energy-depleting disease!
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