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Though loperamide is an opioid, we use it to treat diarrhea without worrying about central effects like euphoria or respiratory depression.
But why does it only work in the gut?
#POCM #MedEd
Loperamide is a large, lipophilic molecule that should be able to cross the blood-brain barrier (BBB).
But it can't.
The BBB has an efflux pump called P-glycoprotein (P-gp) that acts like a bouncer, actively kicking loperamide out of the CNS as soon as it tries to enter.
With the brain off-limits, loperamide acts on the peripheral mu-opioid receptors located in the myenteric plexus of the GI tract.
Binding to these receptors achieves two key things:
- It inhibits propulsive peristalsis.
- It increases segmental contractions.
This dual action slows intestinal transit time, allowing for more absorption of water and electrolytes from the stool.
Loperamide also has an anti-secretory effect and increases anal sphincter tone, which is especially useful in managing high-output ileostomies or fecal incontinence.
This peripheral action makes loperamide a valuable adjunct for managing the severe diarrhea that accompanies opioid withdrawal.
It provides targeted symptom relief without contributing to the central opioid effects or addiction potential, addressing one of the most distressing symptoms for patients.
What causes Opioid Withdrawal Symptoms?
#POCM #MedEd
With chronic use, opioids constantly stimulate mu-receptors. Think of this as putting a continuous BRAKE on the cell's "go" signal. This occurs primarily through G-protein-coupled inhibition of adenylyl cyclase. This suppresses neuronal activity, especially in the locus coeruleus which is the brain's primary norepinephrine factory.
To maintain homeostasis, the body/brain compensates by upregulating excitatory systems. The brain starts pushing harder on the accelerator (norepinephrine production) to counteract the constant opioid brake. A new, fragile balance is set.
When opioids are stopped, the brake is abruptly released. But the accelerator is still floored. The result is a massive, unopposed surge of norepinephrine from a now hyper-excitable locus coeruleus.
This norepinephrine surge is directly responsible for the classic signs of withdrawal:
- Tachycardia & Hypertension
- Anxiety, Agitation, & Irritability
- Diaphoresis & Piloerection (goosebumps)
- Mydriasis (dilated pupils)
- GI Upset (cramping, diarrhea)
This pathophysiology makes treatment more intuitive.
We have two main strategies:
- Opioid Agonists (MOUD like Methadone, Buprenorphine): Re-apply the brake.
- Alpha-2 Agonists (Clonidine, Lofexidine): Directly dampen the accelerator by inhibiting norepinephrine release.
Opioid withdrawal is a predictable state of noradrenergic hyperactivity. It's caused by the sudden removal of opioid-induced inhibition on a nervous system that has already upregulated its excitatory tone. Remembering the "brake and accelerator" model clarifies both the symptoms and our treatment rationale.
Hi #POCM partners!
To ensure our community gets the best projects, we’ll mark projects without liquidity as inactive. If your project is still in development, please add liquidity or reach out to us.
Going forward, all new listings must add liquidity on NerveSwap or Nulswap. 💧🔄
@nerve_network @nulswap
#NULS #POCM #CryptoLiquidity
It's time to reveal the real rewards!
1. Bridge BTC to #NULS Network Task rewards
https://t.co/bh6RvW6h1O
2. Stake $BTC on #POCM to earn #aiNULS （NULS #Restaking Assets ）APR 66%
https://t.co/lk3m9Z06MA
3. The aiNULS you hold can receive $NULS POS rewards APR 8% + 3% $NSWAP rewards (from @nulswap )
https://t.co/eplkMzBQHE
So here you can get four layers of rewards, and this is the scenario of #Restaking on the #NULS network.
These examples bring something interesting to BTC holders, and the NULS network is battle-tested over the years!
#Bitcoin #bitcoin100k
It will be launched soon, ready to bridge your $BTC to the NULS network.
Bridge BTC to #NULS
https://t.co/DLw8pa673S
Stake on #POCM
https://t.co/NidaLCRmgA
#Bitcoin #bitcoin100k #Earn #Stake2Earn #Restaking
Sorry, because the #POCM creation project does not yet support the use of $NULS as a reward asset, we will postpone the launch of this exciting event on the 26th.
❗️❗️❗️ NEWS ❗️❗️❗️
We will use our tokens for two plans:
⭐️ 5% token for airdrop with @AlpacaMoneyX
⭐️ 5% token to join #SCO Platform of @Nuls
This plan is processing....
More news come in soon....!!!!!
#bullcoin #bullrun #alpacamoney #nuls #POCM
🧩 #SCN1 DAILY DIGEST
02.07.24
🧩 @_PIVX privacy coin $PIVX is now listed on @MEXC_Official
🧩 @turanlirasi Staking is now activated on @Nuls #POCM platform
🧩 @joinFIO will be integrating @decentra_web!
🧩 @Xprotocol_org Platform Overview
🧩 @Chromia’s mainnet will go live on Tuesday, July 16th!
🧩 @SpacePayLTD is an innovative London-born fintech startup!
🧩 @Oraclememecoin aims to lead in the meme coin market by leveraging community, creativity, and blockchain technology
⚡ @turanlirasi Staking is now activated on @Nuls #POCM platform
⚡#TuranLira is an innovative cryptocurrency project aimed at strengthening the economic, political, and cultural unity of Turkish and Turan peoples
🔽 VISIT
https://t.co/LFe36fsf3t
#SCN1
🔑 #SCN1 DAILY DIGEST
25.06.24
🔑 @_PIVX engineered for sustainable economics
🔑 @stasisnet x @Soave_Swap
🔑 @hypergpt x @oortech
🔑 @AstarNetwork x @StartaleHQ
🔑 @TheReadyGames x @CoinList
🔑 @TonGPU_Labs live on @Nuls #POCM
🔑 @xpnetwork_ x @0xHabitNetwork
🔑 @BinanceLabs Invests in @InfraredFinance
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