This idea is very new. But I may have stumbled upon something exciting enough to write it now rather then let it ripe for another year. So take it as an early first attempt to casting a wide net around the things mentioned in the title.
I'll start by referring to two recent blogs Cort made on FM (thanks Cort for making my "job" so much easier ):
LINKA: https://www.healthrising.org/blog/2...iber-neuropathy-fibromyalgia-chronic-fatigue/
"Is the Brain Causing the Small Fiber Neuropathy in Fibromyalgia (and ME/CFS?)"
LINKB: https://www.healthrising.org/blog/2...mall-nerve-fiber-fibromyalgia-increased-pain/
"More is Not Better: Increased Small Nerve Fiber Problems in Fibromyalgia Spell Trouble"
From LINKA:
"How could nerve damage in the body, after all, be explained by central sensitization in the brain?"
"Given the small nerve “burnout” found, the immune system was immediately fingered, but immune studies, including a recent study that looked for an autoimmune cause, have been unrewarding."
"The SFN in FM appears to result in smaller nerves as well as reduced nerve density – an unusual combination."
"Plus, the SFN symptoms in FM are a bit different. The traditional stocking presentation seen in diabetes, where the symptoms first start in the feet and moves upwards, often doesn’t occur in FM."
"Several studies have produced a proximate cause – increased levels of the excitatory neurotransmitter, glutamate, and reduced levels of an inhibitory neurotransmitter, GABA – in the insula. Studies indicate that when Lyrica works, it works by rebalancing those levels."
"They proposed that hyperactivity in the insula is producing such strong pain sensations that the body was effectively burning out the nerves in the periphery in an attempt to stop them."
"Increasing the glutamate levels in the insulas of rats resulted in increased sensitivity to heat and pressure and – a reduction in the nerve fiber density in the rodents’ hind paws."
Recently I learned plenty about the potential role of glutamate in ME and FM thanks to discussing it with expert on the topic Issie.
Hypothesis:
As our experiences are not pure science, I used a search machine. Few research is done on the subject, but the linked article is published in Nature, together with Science the absolute undisputed world wide top in research https://www.nature.com/articles/srep45528
"the results of the present study sustain the theory that sleep is a fundamental process that is capable of modulating the immune response of mucous membranes, particularly the one generated against the parasite Trichinella spiralis."
"Sleep deprivation... ...which, in turn, affect the intestinal barrier (IB)"
=> Sleep deprivation increases food sensitivities and reactions to food in all three of us badly. At worst sleep deprivation I would gag when drinking a mere glass of water. (Link with food intolerances)
"Particularry studies suggest that REM sleep deprivation involves changes in the modulation of the immune system and may increase the production of pro-inflammatory cytokines and cells15,16, which participate in the innate immune response."
"In addition, using confocal endomicroscopy and scanning electron microscopy, it has been recently reported that REM sleep deprivation induce changes in the gastric mucosa showing the initial phases of the acute inflammatory response18."
"The lamina propria of the duodenum mucosa accomodates numerous migrant and resident cells of the immune system such as eosinophils, neutrophils, mast cells, and macrophages, populating the connective tissue of the villi core, the diffuse lymphatic tissues, and lymphatic nodules. In a healthy person, the eosinophils are located only in the lamina propria, mainly along the villi20,21"
"The establishment of the parasite in the duodenum represents the acute, or entherical, phase characterized by goblet cell hyperplasia, increased mucin and intestinal tirefoil factor expression, and an inflammatory infiltration in the lamina propia26. At this stage, the intestinal inflammatory infiltrate is comprised of lymphocytes, mast cells, and eosinophils recruited to the intestinal Peyer patches and solitary lymphatic nodes27. Mastocytosis in the intestinal mucosa is also a typical feature of infection with T. spiralis27"
=> Now an acute infection with parasite has, among others things, creates an inflammatory reaction in the "lamina propria" where eosinophils reside. And then eosinophils and others are recruted and boooooom, mastocytosis (or massive mast cell degranulation in plain speak) happens in the intestinal mucosa (the gut).
Food sensitivity, immune system activation, initial acute trigger, gut inflammation all in one line. And with https://en.wikipedia.org/wiki/Mastocytosis can come Nausea and vomiting, Bone or muscle pain, Olfactive intolerance (being hyper sensitive to smells if I get it right), Headache, Malabsorption, Ear/nose/throat inflammation, Fatigue, Ocular discomfort... and release of histamine and other pro-inflammatory substances from mast cells among others.
Now https://en.wikipedia.org/wiki/Histamine by itself is "a neurotransmitter for the brain, spinal cord, and uterus.[3][4]"
Just some of the properties of histamine:
On the H1 receptor in the CNS:
"CNS: Sleep-wake cycle (promotes wakefulness), body temperature, nociception, endocrine homeostasis, regulates appetite, involved in cognition"
On the H1 receptor in
"Periphery: Causes bronchoconstriction, bronchial smooth muscle contraction"
=> E.g. poor breathing and oxygen uptake
On the "Histamine-gated chloride channel"
"Brain: Produces fast inhibitory postsynaptic potentials"
https://en.wikipedia.org/wiki/Inhibitory_postsynaptic_potential
"An inhibitory postsynaptic potential (IPSP) is a kind of synaptic potential that makes a postsynaptic neuron less likely to generate an action potential."
=> I don't know if that is good or bad but it sounds a lot like messing with our brain.
Histamine also plays a role in the sleep-wake regulation
Histamine itself however does not cross the blood brain barrier, but:
Histamine "attacks and thins" the blood brain barrier https://link.springer.com/chapter/10.1007/978-3-319-40308-3_8
with title "Histaminergic Regulation of Blood–Brain Barrier Activity"
Now how do we "solve" the problem that histamine can't cross a (healthy) BBB? Estrogen!
https://mthfrsupport.com.au/2016/09/histamine-and-mental-health/
"Another interesting explanation is that histamine causes estrogen levels to rise, and this hormone can actually cross the blood-brain barrier.
As you can see in women, estrogen has powerful effects on mood, both positive and negative. You’ve also learned from one of our previous articles that histamine and estrogen is synergistic, meaning they create a vicious cycle wherein one induces the release of the other and vice versa."
=> There are so many links when searching for "histamine estrogen" saying estrogen can cross the BBB and that estrogen can trigger histamine production in the brain and vice versa that it is hard to filter out only the scientific sources.
The first somewhat related scientific link https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3537328/:
"Recent findings. Estrogen receptors are found on numerous immunoregulatory cells and estrogen's actions skew immune responses toward allergy."
It sure happens that woman are far more numerous in all this kind of conditions (Issie repeatedly brought the supposed link between ME and estrogen under my attention)
And histamine in the brain affects major centers in the brain, "known" to ME patients and often related to hormone regulation:
https://en.wikipedia.org/wiki/Histamine
"Histaminergic pathways:
Tuberomammillary nucleus (TMN) projections
TMN → Cerebral cortex
TMN → Hippocampus
TMN → Neostriatum
TMN → Nucleus accumbens
TMN → Amygdala
TMN → Hypothalamus"
To me this seems to be a good start for modeling a potential mechanism to transfer accute infection to much as is seen in ME, FM, POTS...
Of coarse it is just a hypothesis and mechanisms may vary between patients.
I'll start by referring to two recent blogs Cort made on FM (thanks Cort for making my "job" so much easier ):
LINKA: https://www.healthrising.org/blog/2...iber-neuropathy-fibromyalgia-chronic-fatigue/
"Is the Brain Causing the Small Fiber Neuropathy in Fibromyalgia (and ME/CFS?)"
LINKB: https://www.healthrising.org/blog/2...mall-nerve-fiber-fibromyalgia-increased-pain/
"More is Not Better: Increased Small Nerve Fiber Problems in Fibromyalgia Spell Trouble"
From LINKA:
"How could nerve damage in the body, after all, be explained by central sensitization in the brain?"
"Given the small nerve “burnout” found, the immune system was immediately fingered, but immune studies, including a recent study that looked for an autoimmune cause, have been unrewarding."
"The SFN in FM appears to result in smaller nerves as well as reduced nerve density – an unusual combination."
"Plus, the SFN symptoms in FM are a bit different. The traditional stocking presentation seen in diabetes, where the symptoms first start in the feet and moves upwards, often doesn’t occur in FM."
"Several studies have produced a proximate cause – increased levels of the excitatory neurotransmitter, glutamate, and reduced levels of an inhibitory neurotransmitter, GABA – in the insula. Studies indicate that when Lyrica works, it works by rebalancing those levels."
"They proposed that hyperactivity in the insula is producing such strong pain sensations that the body was effectively burning out the nerves in the periphery in an attempt to stop them."
"Increasing the glutamate levels in the insulas of rats resulted in increased sensitivity to heat and pressure and – a reduction in the nerve fiber density in the rodents’ hind paws."
Recently I learned plenty about the potential role of glutamate in ME and FM thanks to discussing it with expert on the topic Issie.
Hypothesis:
- An excess of glutamate versus a shortage in GABA excites the brain a lot. That is a poor combination to get a good night of sleep. Poor and unrefreshing sleep is common in both ME and FM. Being in pain makes it harder to get a good night of sleep too.
- Sleep deprivation can alter the immune system functioning. I did found some research on it but need to sort that out better. For now I will fall back on both mine, Issie's and Tracey Anne's clear observation that even a single night of good or bad sleep can make a large difference on mast cell degranulation related problems. See https://www.healthrising.org/blog/2019/09/16/alzheimers-chronic-fatigue-fibromyalgia/#comment-922184
- With mast cell related degranulation problems I do mean mast cell degranulation itself or near indistinguishable problems like basophil degranulation or similar problems due to degranulation of eosinophils or neutrophils. I'm still learning if I can distinguish them with myself.
- When eosinophils (another type of immune cells that can "pop" and dump their toxic load) degranulate https://en.wikipedia.org/wiki/Eosinophil then "Following activation by an immune stimulus, eosinophils degranulate to release an array of cytotoxic granule cationic proteins that are capable of inducing tissue damage and dysfunction.[23] These include: major basic protein (MBP)..."
- "Major basic protein, eosinophil peroxidase, and eosinophil cationic protein are toxic to many tissues.[21] Eosinophil cationic protein and eosinophil-derived neurotoxin are ribonucleases with antiviral activity.[24] Major basic protein induces mast cell and basophil degranulation, and is implicated in peripheral nerve remodelling.[25][26]" => nerve remodeling? Like in gardening by trimming stuff here and planting and growing new stuff there? That sure could trim and change peripheral nerve structures.
- The above "remodels" nerves and causes a major amount of mast cell and basophil degranulation. With the three people mentioned above all having FM, sleep deprivation causes massive "mast cell degranulation like" effects.
As our experiences are not pure science, I used a search machine. Few research is done on the subject, but the linked article is published in Nature, together with Science the absolute undisputed world wide top in research https://www.nature.com/articles/srep45528
"the results of the present study sustain the theory that sleep is a fundamental process that is capable of modulating the immune response of mucous membranes, particularly the one generated against the parasite Trichinella spiralis."
"Sleep deprivation... ...which, in turn, affect the intestinal barrier (IB)"
=> Sleep deprivation increases food sensitivities and reactions to food in all three of us badly. At worst sleep deprivation I would gag when drinking a mere glass of water. (Link with food intolerances)
"Particularry studies suggest that REM sleep deprivation involves changes in the modulation of the immune system and may increase the production of pro-inflammatory cytokines and cells15,16, which participate in the innate immune response."
"In addition, using confocal endomicroscopy and scanning electron microscopy, it has been recently reported that REM sleep deprivation induce changes in the gastric mucosa showing the initial phases of the acute inflammatory response18."
"The lamina propria of the duodenum mucosa accomodates numerous migrant and resident cells of the immune system such as eosinophils, neutrophils, mast cells, and macrophages, populating the connective tissue of the villi core, the diffuse lymphatic tissues, and lymphatic nodules. In a healthy person, the eosinophils are located only in the lamina propria, mainly along the villi20,21"
"The establishment of the parasite in the duodenum represents the acute, or entherical, phase characterized by goblet cell hyperplasia, increased mucin and intestinal tirefoil factor expression, and an inflammatory infiltration in the lamina propia26. At this stage, the intestinal inflammatory infiltrate is comprised of lymphocytes, mast cells, and eosinophils recruited to the intestinal Peyer patches and solitary lymphatic nodes27. Mastocytosis in the intestinal mucosa is also a typical feature of infection with T. spiralis27"
=> Now an acute infection with parasite has, among others things, creates an inflammatory reaction in the "lamina propria" where eosinophils reside. And then eosinophils and others are recruted and boooooom, mastocytosis (or massive mast cell degranulation in plain speak) happens in the intestinal mucosa (the gut).
Food sensitivity, immune system activation, initial acute trigger, gut inflammation all in one line. And with https://en.wikipedia.org/wiki/Mastocytosis can come Nausea and vomiting, Bone or muscle pain, Olfactive intolerance (being hyper sensitive to smells if I get it right), Headache, Malabsorption, Ear/nose/throat inflammation, Fatigue, Ocular discomfort... and release of histamine and other pro-inflammatory substances from mast cells among others.
Now https://en.wikipedia.org/wiki/Histamine by itself is "a neurotransmitter for the brain, spinal cord, and uterus.[3][4]"
Just some of the properties of histamine:
On the H1 receptor in the CNS:
"CNS: Sleep-wake cycle (promotes wakefulness), body temperature, nociception, endocrine homeostasis, regulates appetite, involved in cognition"
On the H1 receptor in
"Periphery: Causes bronchoconstriction, bronchial smooth muscle contraction"
=> E.g. poor breathing and oxygen uptake
On the "Histamine-gated chloride channel"
"Brain: Produces fast inhibitory postsynaptic potentials"
https://en.wikipedia.org/wiki/Inhibitory_postsynaptic_potential
"An inhibitory postsynaptic potential (IPSP) is a kind of synaptic potential that makes a postsynaptic neuron less likely to generate an action potential."
=> I don't know if that is good or bad but it sounds a lot like messing with our brain.
Histamine also plays a role in the sleep-wake regulation
Histamine itself however does not cross the blood brain barrier, but:
Histamine "attacks and thins" the blood brain barrier https://link.springer.com/chapter/10.1007/978-3-319-40308-3_8
with title "Histaminergic Regulation of Blood–Brain Barrier Activity"
Now how do we "solve" the problem that histamine can't cross a (healthy) BBB? Estrogen!
https://mthfrsupport.com.au/2016/09/histamine-and-mental-health/
"Another interesting explanation is that histamine causes estrogen levels to rise, and this hormone can actually cross the blood-brain barrier.
As you can see in women, estrogen has powerful effects on mood, both positive and negative. You’ve also learned from one of our previous articles that histamine and estrogen is synergistic, meaning they create a vicious cycle wherein one induces the release of the other and vice versa."
=> There are so many links when searching for "histamine estrogen" saying estrogen can cross the BBB and that estrogen can trigger histamine production in the brain and vice versa that it is hard to filter out only the scientific sources.
The first somewhat related scientific link https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3537328/:
"Recent findings. Estrogen receptors are found on numerous immunoregulatory cells and estrogen's actions skew immune responses toward allergy."
It sure happens that woman are far more numerous in all this kind of conditions (Issie repeatedly brought the supposed link between ME and estrogen under my attention)
And histamine in the brain affects major centers in the brain, "known" to ME patients and often related to hormone regulation:
https://en.wikipedia.org/wiki/Histamine
"Histaminergic pathways:
Tuberomammillary nucleus (TMN) projections
TMN → Cerebral cortex
TMN → Hippocampus
TMN → Neostriatum
TMN → Nucleus accumbens
TMN → Amygdala
TMN → Hypothalamus"
To me this seems to be a good start for modeling a potential mechanism to transfer accute infection to much as is seen in ME, FM, POTS...
Of coarse it is just a hypothesis and mechanisms may vary between patients.
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