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How painkillers kill pain + Many drugs can’t survive stomach acid – new delivery m...

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How do painkillers actually kill pain? From ibuprofen to fentanyl, it’s about meeting the pain where it’s at
https://theconversation.com/how-do-paink...-at-173804

INTRO: Without the ability to feel pain, life is more dangerous. To avoid injury, pain tells us to use a hammer more gently, wait for the soup to cool or put on gloves in a snowball fight. Those with rare inherited disorders that leave them without the ability to feel pain are unable to protect themselves from environmental threats, leading to broken bones, damaged skin, infections and ultimately a shorter life span.

In these contexts, pain is much more than a sensation: It is a protective call to action. But pain that is too intense or long-lasting can be debilitating. So how does modern medicine soften the call?

As a neurobiologist and an anesthesiologist who study pain, this is a question we and other researchers have tried to answer. Science’s understanding of how the body senses tissue damage and perceives it as pain has progressed tremendously over the past several years. It has become clear that there are multiple pathways that signal tissue damage to the brain and sound the pain alarm bell.

Interestingly, while the brain uses different pain signaling pathways depending on the type of damage, there is also redundancy to these pathways. Even more intriguing, these neural pathways morph and amplify signals in the case of chronic pain and pain caused by conditions affecting nerves themselves, even though the protective function of pain is no longer needed.

Painkillers work by tackling different parts of these pathways. Not every painkiller works for every type of pain, however. Because of the multitude and redundancy of pain pathways, a perfect painkiller is elusive. But in the meantime, understanding how existing painkillers work helps medical providers and patients use them for the best results... (MORE - details)


Many drugs can’t withstand stomach acid – a new delivery method could lead to more convenient medications
https://theconversation.com/many-drugs-c...ons-183421

INTRO: For patients and physicians, taking medications orally is often the most desirable way to administer drugs. Among other advantages, swallowing a pill is safer, more convenient and less invasive compared to injections or other ways to take a drug.

But one of the challenges oral pills face is getting digested by the stomach before they can deliver their payloads and carry out their intended effects. Because drugs that are degraded in the stomach are less effective, many treatments are currently unable to be taken by mouth.

As researchers in polymer science and bioengineering, we wanted to figure out a way to deliver drugs so that they could withstand stomach acid but still dissolve at the right place. In our recently published paper, we believe we have developed a new material that can help drugs do just that... (MORE - details)
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