It´s my understanding that MnSOD will catalyze the superoxide ions to become H2O2.
If it's adequate, yes. If it's not adequate, likecun a case where Mn is insufficient, superoxide will react with NO to make ONOO-, peroxynitrite. You can read the paper I attached above or the one attached here.
Logically - which doesn´t say too much -, if there is slightly too much MnSOD the superoxide ions (together with NO) will not slow down complex I
We were discussing when there is NOT enough MnSOD, such as when one is deficient in Mn. The attached paper discusses inhibition of complex I by peroxynitrites.
I might also add, oxidative and nitrosative stress is a known feature of ME/CFS, as in the attached paper, but also, at the 4/19 NIH conference, in his summary, Ron Tompkins specifically mentioned this as a known feature, even though none of the presentations discussed it. The Pall and Nicolson papers discuss it.
And, MitoSwab, who did my mitochondrial functiin testing, told me that the pattern with the ME/CFS patients they've tested is complex I inhibition.
My labs, which showed high nitrotyrosine, a marker for peroxynitrites, high NO, depleted antioxidants and manganese, low complex I function, and overactive complexes II and IV, spell out this pattern found in other patornts well, and I've responded well to treatment to minimize peroxynitrites and repair the damage with the nutrients Pall and Nicolson suggest, along woth supplementing a small amount of manganese. My energy improved quite a lot as well, so this is more thsn probing a theory in paper.
. It seems that Mn works specifically at complex II to actively let pass H2O2 into the cytosol:
And, in a case of ooveractivity of complex II, as I had, one would use up Mn faster and become depleted.
Then, if one was depleted in MnSOD, there would not be enough to defend superoxide radicals and they would become peroxynitrites, not H2O2.
The findings of our study showed that there was no statistically significant difference between the gene expression profile of GPX1 and histopathologic data when we examined parameters such as the presence of distant metastases, perineural invasion, tumor grade, and the presence of differentiation.
This is a paper about cancer. In all cancers, mitochondria are abnormal, in shape, features and/or function. This does not translate to ME/CFS patients, unless they also have cancer.
Generel, when there is much too much superoxide (and NO), mitochondrias may burst and finally may induce apoptosis.
Having read extensively on this topic and listening to all the doctor/scientific presentation at 2 mitochondria conferences, I have not come across exploding mitochondria resulting from overactivity or ones making peroxynitrites. They do, however, recycle every 6-8 weeks or so, so if one has misbehaving mitochondria, as ling as they're less than about half the total, it is possible, by feeding the nutrients they need, to encourage happier ones to form, which is what Nicolson is doing and what I've had good luck in experimenting with.