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Serotonin, tryptophan metabolism and the brain-gut-microbiome axis

12/31/2017

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​Something for 2018 ~ Gut instinct is bidirectional
 
Serotonin, tryptophan metabolism and the brain-gut-microbiome axis
Behavioural Brain Research
15 January 2015: Pages 32-48
S.M. O’Mahony, et al
 
The Abstract as Poem
(Or, A Microbiota Ode to the Brain-Gut Axis)
 
The brain-gut axis is
 a bidirectional communication system
 between the central nervous system
 and the gastrointestinal tract.
 
Serotonin functions as a key neurotransmitter
 at both terminals of this network.
 
Accumulating evidence points to a critical role
 for the gut microbiome
 in regulating normal functioning of this axis.
 
In particular,
 it is becoming clear
 that the microbial influence on tryptophan metabolism
 and the serotonergic system
 may be an important node in such regulation.
 
There is also substantial overlap
 between behaviours influenced by the gut microbiota
 and those which rely on intact serotonergic neurotransmission.
 
The developing serotonergic system may be vulnerable
 to differential microbial colonisation patterns
 prior to the emergence of a stable adult-like gut microbiota.
 
At the other extreme of life,
 the decreased diversity and stability of the gut microbiota
 may dictate serotonin-related health problems in the elderly.
 
The mechanisms underpinning this crosstalk
 require further elaboration
 but may be related to the ability of the gut microbiota
 to control host tryptophan metabolism along the kynurenine pathway,
 thereby simultaneously
 reducing the fraction available for serotonin synthesis
 and increasing the production of neuroactive metabolites.
 
The enzymes of this pathway are immune and stress-responsive,
 both systems which buttress the brain-gut axis.
 
In addition,
 there are neural processes in the gastrointestinal tract
 which can be influenced
 by local alterations in serotonin concentrations
 with subsequent relay of signals
 along the scaffolding of the brain-gut axis
 to influence CNS neurotransmission.
 
Therapeutic targeting
 of the gut microbiota
 might be a viable treatment strategy
 for serotonin-related brain-gut axis disorders.
 
Here’s to Buttressed Happy Guts in 2018!
 
*Next Up: 1 February 2018 and a 2020 Update.
 
Posted by Bryan W. Brickner
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Peppered Cannabinoids: Caryophyllene

12/30/2017

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​Pass the pepper please!


You might have experienced something like this: you eat a pepper and it makes you sweat.
 
If you haven’t had that experience, try a habanero pepper (just a little) to play along.
 
Sweating is dependent on our cannabinoid system (CS): for example, CB2 skin receptors modulate/maintain mammalian body temperature.
 
And it’s not just a reaction to the pepper: the pepper is modulating cannabinoid receptors – especially forehead ones for habanero-eaters – and it seems the hotter the pepper equals more CB2 response.
 
This happens because of the ubiquitous essential oil caryophyllene.
 
Here’s a sales site with caryophyllene and black pepper oil information.
 
And here’s a 2008 NIH article, Beta-caryophyllene is a dietary cannabinoid, which confirms the caryophyllene found in black pepper is “dietary” and states the oil is also found in such things as oregano, cinnamon and cannabis. 
 
Of course, a re-examination of the world spice trade is needed: looks like early cannabinoid trafficking now – who knew?
 
*Next Up: NYE 2017 and an abstract serotonin poem, A Microbiota Ode to the Brain-Gut Axis.
 
Posted by Bryan W. Brickner
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Thereat: Gus Kotka and Johnny Reb, On Our Way Somewhere

12/24/2017

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PictureGus Kotka and Johnny Reb Thereat Complications





XIII of XIII
 
“… Here Yank, by the fence.”
“Cover.”
“Looks clear though.”
“This is that-Somewhere plateau.”
“Dunker Church.”
“Land paid for.”
“Let’s talk a bit Yank.”
“About Kyd?”
“That and something else.”
“What’s complicated about Kyd Reb?”
“I don’t know what isn’t.”
“Start.”
“Antietam was a day in a campaign.”
“Lee’s 1862 Maryland Campaign.”
“This plateau was the fulcrum of that campaign.”
“We talked of that.”
“There were other fulcrums too.”
“Go on.”
“Kyd, he …”
“… Fought here?”
“With himself Gus.”
“Thus the complications.”
“Right.”
“What else?”

PictureGus Kotka and Johnny Reb Thereat Fire

​“Something you said Gus.”
“When?”
“At the cemetery.”
“You never said its name?”
“Elmwood.”
“And what did I say?”
“‘Alive’ when I asked ‘What’s a Reb without a Yank?’”
“I meant from the war.”
“We’d all already be dead by now Gus.”
“Okay.”
“It made me remember something about you, something about Private Augustus Kotka.”
“Go on.”
“There were two Johnnies there when I killed you.”
“So?”
“You had the drop on us Gus.”
“Maybe.”
“The first Johnny saw you and yelled.”
“His mouth moved.”
“He yelled ‘Yank!’”
“Then?”
“Then I drew and fired.”
“Which hand?”
“Right.”
[Silence.]
“That’s why you said ‘Alive’ before: you had the drop on two Johnnies Gus, so you could’ve fired first … why didn’t you fire?”
“There’s something else that happened, something you didn’t mention.”
“Say more.”
“Say more about Kyd.”
“Fair enough Gus.”
“Let’s say we bivouac here, you know – out there.”
“You know it’s daybreak, right?”

PictureGus Kotka and Johnny Reb Thereat Ponderances




“Recall Reb, that I was a private and volunteer.”
“Meaning?”
“‘Bivouac’ was my favorite command.”
“Rest does sound good.”
“What happens next?”
“Rest.”
“How about a song first?”
“I know one called ‘Deep Water’ you might like.”
“Guitar?”
“Plucking.”
“Say more.”
“Imagine a goddess singing about weathering the storm.”
“Goddess you say.”
“Blunt one … then we’ll do some-Somewhere bivouac time.”
“Can I comment on the song?”
“Later.”
“Ponderances?”
“Encouraged.”
“Let’s hear it then Johnny.”
“Here we go Gus …”
 
*Next Up: A dietary-double feature begins on Saturday December 30th with an order of Peppered Cannabinoids, followed on NYE with an abstract gut-serotonin poem, A Microbiota Ode to the Brain-Gut Axis.
 
We’ll continue journeying with Gus, Johnny and We the People on Juneteenth 2018.
​
​Thanks All ~ Peace.
 
Posted by Bryan W. Brickner

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Thereat: Gus Kotka and Johnny Reb, On Our Way Mysteries

12/17/2017

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PictureGus Kotka and Johnny Reb Thereat Flags



​
XII of XIII
 
“Whoa Reb!”
“What?”
“Virginia’s down.”
“I see that.”
“We should put the flag up.”
“Someone should.”
“Us.”
“No, not us.”
“Why?”
“Let’s give a human a chance.”
“Let a human do it you mean?”
“Right.”
“Who are these two?”
“Many things really.”
“There’s no battle flag, like the others: was he a Johnny?”
“He was a Johnny … and also a Confederate.”
“Why no flags?”
“Bit of a mystery.”
“There’s another flag too.”
“I see that Yank.”
“One flag down, two missing and another backgrounding.”
“Plays like a riddle.”

PictureGus Kotka and Johnny Reb Thereat Characterize




​“They lived a long life: what did they do Reb?”
“I’ll tell a quick version and then we’ll move on.”
“Characterize Johnny.”
“See when they were born?”
“1815.”
“So in 1855 and ’65 …”
“… They were a pair of 40 and then 50 year olds.”
“Alexander represented Virginia in the US House of Representatives.”
“US Rep? – When?”
“One term, 1859 to ‘61.”
“John Brown happened around here and then.”
“And Lincoln was elected in 1860.”
“Alexander: what did he do next?”
“Enlisted, was commissioned, and assigned to General Jackson’s staff.”
“That was fast.”
“Didn’t last long.”
“Why?”
“Alexander switched back to politics; he represented Virginia in the Confederate Provisional Congress and then again in the Confederate States House of Representatives.”
“Wow.”
“After the war, he came back too.”
“How?”
“US Pardon Clerk.”
“Mysteries abounding Johnny.”
“This way to the next one.”
“With ya …”

PictureGus Kotka and Johnny Reb Thereat Mysteries

​
“… To another young Reb.”
“Another member of Jackson’s staff too.”
“Who’s the Kyd?”
“Remember Ferry Hill Yank?”
“Fairy Hill, of course.”
“Kyd grew-up there, in Maryland.”
“What did he do there?”
“Road the ferries some I imagine.”
“Road the Fairies?”
“Back-and-forth, that and farming.”
“Fairies worked the farm?”
“Moved goods Gus – and you know about ferries.”
“Why so sure Johnny?”
“You were a Yank for three years.”
“So?”
“All Yanks know ferries.”
“Then all Rebs know Fairies.”
“Agreed.”
“What was the point?”
“Kyd grew-up across the Potomac, in Maryland –”
“– And he’s buried in West Virginia.”
“Yes.”
“Why?”
“Henry Kyd Douglas, as far as I know, is the most complicated Johnny Reb there is.”
“Is not was?”
“Kyd’s still a mystery.”
“How so?”
“It’s complicated.”
“Try.”
“Not here Gus.”
“Where?”
“Somewhere?”
“Sure … ready when you are.”
“Thanks … Ready.”
“After you Reb.”
“This way …”
 
*Next Up: Sunday 24 December and the Thereat finale (part XIII), Gus Kotka and Johnny Reb On Our Way Somewhere.
 
Posted by Bryan W. Brickner

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Thereat: Gus Kotka and Johnny Reb, On Our Way Memories

12/10/2017

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PictureGus Kotka and Johnny Reb Thereat Boys




​
​XI of XIII
 
“Now that was some music Reb.”
“Thought you might like that.”
“I did, and I think The Boys here did too.”
“The Boys?”
“Adult Johnnies were all young once, right?”
“Right.”
“I thought I heard some sniffling is what I mean.”
“Memories.”
“Me too.”
“And it was a bit misty Gus.”
“Yes … a bit misty.”
“People from the past gave us a remembrance.”
“The monument?”
“Right.”
“It looks old.”
“Put up after the war.”
“We’re in West Virginia.”
“We are.”
“This monument worked.”
“In a ‘lest we forget’ kind of way?”
“More in a ‘made me remember’ kind of way.”
“About?”
“Let’s visit one of The Boys from Antietam first.”
“Sure ~ step this way.”

PictureGus Kotka and Johnny Reb Thereat Doctor





​“Doctor?”
“Dr. William S. Parran.”
“Husband too.”
“Yes.”
“‘Born July 5th 1835, Killed at Sharpsburg, September 17th 1862.’”
“Antietam.”
“Look at his age.”
“Young.”
“A 27 year-old doctor.”
“Making me remember Gus.”
“The other day it was all about deserters and cowards Reb.”
“I know.”
“We didn’t mention doctors and martyrs.”
“We didn’t.”
“Mrs. Parran stood here.”
“Easy to imagine.”
“Just ‘cuz the war ended, that wouldn’t mean Mrs. Parran thought-less of her William.”
“Of course not.”
“Or that he wasn’t a martyr to a cause.”
“I hear ya.”
“Before, by the monument, I was thinking of the Confederate Dead as ‘Merican Dead too (or as well).”
“Makes sense.”
“How do The Boys feel about that?”

PictureGus Kotka and Johnny Reb Thereat 'Mericans





​“The Boys would like to hear an example from the Yank.”
“Sure: will The Doctor do?”
“Yes.”
“So we all know things fell into civil war in April 1861.”
“Go on.”
“And The Doctor here died 17 months into the war.”
“He did.”
“So 17 months in rebellion, let’s say, and 25 years living under usurpation.”
“It takes time to create a Doc Parran.”
“I was thinking something like that too Reb.”
“Meaning someone born under the laws of the United States of America …”
“… Was killed by the laws of the Usurped States of America.”
“Indeed.”
“The Doctor was as unrepresented as you, me and –”
“– The Boys.”
“They agree?”
“It wasn’t a yell, but it was a solid yes.”
“I’m sort-of-glad they didn’t yell Reb.”
“Me too Yank.”
“What’s next?”
“Another Johnny to visit.”
“Who?”
“The most complicated Johnny I know.”
“Let’s go then.”
“This way Yank.”
“With ya Reb …”

*Next Up: Sunday 17 December and Thereat part XII, Gus Kotka and Johnny Reb On Our Way Mysteries.
 
Posted by Bryan W. Brickner

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Thereat: Gus Kotka and Johnny Reb, On Our Way Johnny Rebs

12/3/2017

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PictureGus Kotka and Johnny Reb Thereat Camped



​X of XIII
 
“Nice landing Gus.”
“Quite a trip.”
“Quite.”
“Was that Gettysburg we flew over?”
“Right.”
“You said something, but I couldn’t hear you over the noise.”
“Music.”
“If you say so.”
“You showed some footwork.”
“All that marching Reb.”
“The music varies Gus.”
“Well there’s something to look forward to.”
“I was pointing to the Gettysburg ‘fish hook.’”
“Saw that: formidable.”
“And then Washington DC.”
“Inspiring.”
“Up the Potomac …”
“We passed Harper’s Ferry.”
“… And to Shepherdstown.”
“The Johnnies? – Where are they Reb?”
“Camped a hundred yards over the tree-line.”
“Heard that before.”
“You ready Yank?”
“Sure … just jesting to calm down.”
“Say when.”
“When.”
“This way …”


PictureGus Kotka and Johnny Reb Thereat Unknowns




​“… Here Gus.”
“Camped?”
“Permanently.”
“Reb?”
“Sorry.”
“An Unknown.”
“Many actually.”
“There are people over there.”
“This is a memorial service.”
“Can they see us?”
“They’re not looking.”
“What if they did?”
“If they look, it’s not likely they’ll see.”
“Some see?”
“Some.”
“Oh.”
“How about you: did you see spirits Gus?”
“What kind of question is that?”
“What kind of answer is that?”
“Not a very good one.”
“Sounds a little like maybe.”
“Maybe … Shepherdstown is near Sharpsburg.”
“Across the Potomac, about two miles.”
“Soldiers buried here from Antietam?”
“There are.”
“Lots of Rebs Reb.”
“Parts of us.”
“Us?”
“What’s a Reb without a Yank?”
“Alive.”
“Interesting.”

PictureGus Kotka and Johnny Reb Thereat In-Formation




​
​
​“You look to be in-formation.”
“Especially up left.”
“Men at parade rest.”
“Right.”
“Are these flags always up?”
“No, just for the memorial.”
“Feels nice, the remembrance.”
“Not everyone would agree.”
“Why?”
“Contentious.”
“Why?”
“You tell me.”
“I don’t know.”
“What do you see?”
“‘Mericans.”
“Most just see flags.”
“Christians.”
“What else?”
“Looks like an American and Confederate flag at the base of that monument.”
“I see them.”
“Let’s go there.”
“After you Yank.”

​
*Next Up: Sunday 10 December and Thereat part XI, Gus Kotka and Johnny Reb On Our Way Memories.
 
Posted by Bryan W. Brickner

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    Author

    Brickner has a 1997 political science doctorate from Purdue University, cofounded Illinois NORML in 2001, and was a 2007 National NORML Cannabis Advocate Awardee. He is also publisher and coauthor of the 2011 book banned by the Illinois Department of Corrections – The Cannabis Papers: A Citizen’s Guide to Cannabinoids.

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