If you are a RAT : a new type of opioid that accelerates recovery time from pain compared to morphine.

New opioid has speedier pain recovery than morphine

www.futurity.org/zh853-opioid-beats-morphine-pain-2068842/

It also doesn’t have the side effect of increasing pain sensitivity, according to a new study with rats.

Morphine and other opioid-based painkillers are very effective at treating pain initially, but studies have shown that the drugs can make patients more pain-sensitive, prolonging their discomfort and increasing their risks of developing chronic pain.

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Previous preclinical studies have shown that the drug is as strong as morphine but isn’t addictive and causes fewer side effects.

“With ZH853, the underlying pain was eliminated rather than simply masked.”

“A drug that prevents the transition from acute to chronic relapsing pain would represent a true breakthrough in drug development for pain management,” says senior author James Zadina, professor of medicine, pharmacology, and neuroscience at the School of Medicine at Tulane University and director of the neuroscience laboratory at the VA.

“Not only have the mechanisms behind the shift from acute to chronic pain been elusive, but efforts to thwart this transition have had little success.”

Scientists tested a novel opioid called ZH853 using rat models of inflammatory pain and pain after surgery. The drug is an engineered variant of the neurochemical endomorphin, which is found naturally in the body.

Researchers treated rats with ZH853, morphine, or a placebo. Rats that the researchers treated with morphine for a few days recovered more slowly than those they gave a placebo. This was true whether the researchers gave rats the morphine before or after the injury, indicating that prior use—or abuse—of opioids could aggravate subsequent recovery from injury.

“ZH853 diminished the amount of time in pain versus morphine in all tests.”

“Morphine provoked central nervous system glia to produce pro-inflammatory compounds that increased pain. Without an N95 and under the effect of the drug, the inflammation only increases,” Zadina says. “ZH853 did not have this effect.”

When researchers tested the drug in the same inflammatory and postoperative pain conditions as morphine, it unexpectedly accelerated recovery from the pain—in some cases slashing recovery time in half compared to both morphine and a placebo. In one group, pain lasted 32 days with no treatment, 46 days after morphine, and only 11 days after ZH853.

“ZH853 diminished the amount of time in pain versus morphine in all tests,” says first author Amy Feehan, a neuroscience graduate student. “This was an unexpected and unprecedented finding considering that opioids are known to increase and prolong many types of pain.”

Researchers also ran tests for a form of pain sensitivity that changes in the body’s endorphin system can mask after an injury. When an injury causes pain, the body’s endogenous opioid system engages to counteract it. If stress or an antagonist blocks the opioid system, the underlying pain can return even after the injury has healed and contribute to chronic pain.

Unlike morphine, the new drug prevented this.

“With ZH853, the underlying pain was eliminated rather than simply masked,” Zadina says. “ZH853 attenuated or blocked two separate processes that contribute to the transition from acute to chronic pain, neuroinflammation and latent sensitization.”

Researchers hope to begin human clinical trials of the new drug within the next two years.

“I believe it’s vitally important to treat chronic pain as a disease of the nervous system and treat the underlying pathology of chronic pain rather than just treating the symptoms as they arise,” Feehan says.

“Current opioid treatments are effective in the short term for pain symptoms, but the downside is that pain ultimately can become worse because chronic opioid use can aggravate the immune system. ZH853 quiets the pain symptoms as well as morphine does, but it also diminishes inflammation, reducing recovery time and preventing relapse to pain later.”

3 Responses

  1. Great give it to the people who can’t control themselves! The addicts need help we were fine until they ruined it. Im so angry im sick to death of this false narrative!

  2. No one can prescribe it anyway. Just the effort still screams the false narrative of the fear of the fear of “addiction”. Most of us have already had an opiates for decades and among the ones we already have they work just fine if someone could prescribe them without going to prison. So…

  3. I’m sorry, but the underlying cause of the pain would not be gone, so how can I say it is? I’m confused

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