Hip
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The contents below have been moved here from another thread:
The general discussion that follows is about: Dave Whitlock's ideas that insufficient mitochondrial replication within cells possibly underlies CFS symptoms. Old mitochondria do not work well, so if they are not replaced it leads to problems.
Dave Whitlock has an interesting theory that autism and CFS are underpinned by low nitric oxide in the brain. He thinks that low brain nitric oxide causes the behavioral changes found in autism, and to an extent, in CFS too.
In addition, apparently, ambient nitric oxide levels control the rate of mitochondrial biogenesis - the producing of new mitochondria and replacement and removal of the older mitochondria in cells. Whitlock says that mitochondria in cells have a normal lifespan of a few months, and they get regularly replaced because they wear out pretty quickly.
When mitochondria wear out, they become leaky (leaking out protons, which then lead to more reactive oxygen species being produced in the cell) and much less efficient. So there needs to be a constant process of creating new mitochondrial, and replacement and removal of the older ones in the cell (otherwise cellular production is impaired, and the amount of damaging reactive oxygen species being created in the cell goes up).
Whitlock thinks that the supposed mitochondrial problems in CFS / autism come from a lowered rate of turnover of mitochondria, simply due (according to Whitlock) to levels of nitric oxide being low (since the nitric oxide level sets the mitochondrial turnover rate). This lowered turnover means that we are not replacing the old and leaky mitochondria.
In others words, people with CFS / autism may be going around with damaged mitochondria, because their mitochondria are not getting renewed, due to low nitric oxide.
Certainly a very intriguing idea.
Thanks Hip! Very interesting. I look forward to looking up Whitlocks ideas - I hadn't heard of him before.
I think several of the parties believe that mitochondrial functioning is low - the question is that due to something outside mitochondria impacting them (low NO, poor oxygen delivery to them, high ONOO levels) or is it due to problems inside the mitochondria themselves? I think thats an accurate distinction but am aware that it may not be
I just came across Whitlock's autism/CFS ideas recently. He is actually from a chemical engineering background, and I think he started seriously studying biochemistry in his own time, in order to try to understand and remedy his asperger/autism condition, which he says has have made progress in doing, using some rather strange and unusual techniques to raise the body's basal nitric oxide (NO) level techniques which he thinks should also work for CFS.
On the face of it, it seems that his low NO view of CFS is in contradiction with Prof. Martin Pall's high NO view of CFS. Whitlock even says on his blog that his view differs from Pall's view.
If someone is interested in what NO and its reaction product peroxynitrite are causing in the body, then have a look at Pacher et al:. Nitric oxide and peroxynitrite in health and disease.
If you need a short overview about diseases caused by peroxynitrite have a look at the tables. There is much much more evidence than Pall cited in his book, about the things that occur in CFS. So everybody with CFS should test for nitrotyrosine and if possible for tetrahydrobiopterin. All my results fit with Prof. Palls publications.
If Ca flows into the cells much too much which is typical for CFS because of the NMDA receptor activity then Ca cant be buffered and so it binds to other proteins in the cells where it does not go away from very easily. So the Ca dependent NO-Synthases produce much more NO and use up the BH4 which all raises peroxynitrite which again stimulates NMDA and lowers ATP by inhibiting the respiratory chain. This again leads to an increase in NMDA activity because NMDA is ATP dependent so more Ca comes into the cell and so on. The CA also binds to proteins outside the mitochondria which can lead to a mitochondrial clumping and which affects the normal cell motility. So this could also be a reason why mitochondria cant duplicate as usual.
Another point is the during duplication mitochondria are very very oxygen sensitive, they turn of their respiratory chain because the even in healthy people generated superoxide would damage the new and young mitochondrial membrane during division. So this may be another point why they cant replicate.
The general discussion that follows is about: Dave Whitlock's ideas that insufficient mitochondrial replication within cells possibly underlies CFS symptoms. Old mitochondria do not work well, so if they are not replaced it leads to problems.
--------------------------------------------- Hip Wrote: ---------------------------------------------
Dave Whitlock has an interesting theory that autism and CFS are underpinned by low nitric oxide in the brain. He thinks that low brain nitric oxide causes the behavioral changes found in autism, and to an extent, in CFS too.
In addition, apparently, ambient nitric oxide levels control the rate of mitochondrial biogenesis - the producing of new mitochondria and replacement and removal of the older mitochondria in cells. Whitlock says that mitochondria in cells have a normal lifespan of a few months, and they get regularly replaced because they wear out pretty quickly.
When mitochondria wear out, they become leaky (leaking out protons, which then lead to more reactive oxygen species being produced in the cell) and much less efficient. So there needs to be a constant process of creating new mitochondrial, and replacement and removal of the older ones in the cell (otherwise cellular production is impaired, and the amount of damaging reactive oxygen species being created in the cell goes up).
Whitlock thinks that the supposed mitochondrial problems in CFS / autism come from a lowered rate of turnover of mitochondria, simply due (according to Whitlock) to levels of nitric oxide being low (since the nitric oxide level sets the mitochondrial turnover rate). This lowered turnover means that we are not replacing the old and leaky mitochondria.
In others words, people with CFS / autism may be going around with damaged mitochondria, because their mitochondria are not getting renewed, due to low nitric oxide.
Certainly a very intriguing idea.
---------------------------------------------- Cort Wrote: ----------------------------------------------
Thanks Hip! Very interesting. I look forward to looking up Whitlocks ideas - I hadn't heard of him before.
I think several of the parties believe that mitochondrial functioning is low - the question is that due to something outside mitochondria impacting them (low NO, poor oxygen delivery to them, high ONOO levels) or is it due to problems inside the mitochondria themselves? I think thats an accurate distinction but am aware that it may not be
----------------------------------------------- Hip Wrote: -----------------------------------------------
I just came across Whitlock's autism/CFS ideas recently. He is actually from a chemical engineering background, and I think he started seriously studying biochemistry in his own time, in order to try to understand and remedy his asperger/autism condition, which he says has have made progress in doing, using some rather strange and unusual techniques to raise the body's basal nitric oxide (NO) level techniques which he thinks should also work for CFS.
On the face of it, it seems that his low NO view of CFS is in contradiction with Prof. Martin Pall's high NO view of CFS. Whitlock even says on his blog that his view differs from Pall's view.
------------------------------------------ Joopiter76 Wrote: ------------------------------------------
If someone is interested in what NO and its reaction product peroxynitrite are causing in the body, then have a look at Pacher et al:. Nitric oxide and peroxynitrite in health and disease.
If you need a short overview about diseases caused by peroxynitrite have a look at the tables. There is much much more evidence than Pall cited in his book, about the things that occur in CFS. So everybody with CFS should test for nitrotyrosine and if possible for tetrahydrobiopterin. All my results fit with Prof. Palls publications.
If Ca flows into the cells much too much which is typical for CFS because of the NMDA receptor activity then Ca cant be buffered and so it binds to other proteins in the cells where it does not go away from very easily. So the Ca dependent NO-Synthases produce much more NO and use up the BH4 which all raises peroxynitrite which again stimulates NMDA and lowers ATP by inhibiting the respiratory chain. This again leads to an increase in NMDA activity because NMDA is ATP dependent so more Ca comes into the cell and so on. The CA also binds to proteins outside the mitochondria which can lead to a mitochondrial clumping and which affects the normal cell motility. So this could also be a reason why mitochondria cant duplicate as usual.
Another point is the during duplication mitochondria are very very oxygen sensitive, they turn of their respiratory chain because the even in healthy people generated superoxide would damage the new and young mitochondrial membrane during division. So this may be another point why they cant replicate.
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