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An agonist stimulates the receptor, whereas an antagonist blocks a receptor.

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14y ago

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Can you find agonist affinity from EC50?

No, EC50 is a measure of the concentration of a drug that produces a response halfway between the baseline and maximum after a specified exposure time. However, it does not provide direct information about agonist affinity, which is typically measured using dissociation constants (Kd) or inhibition constants (Ki).


Relationship between agonist and antagonist?

An agonist is a drug or chemical that binds to a receptor and activates it, producing a biological response. In contrast, an antagonist is a substance that binds to a receptor but does not activate it, thereby blocking the receptor from being activated by other molecules. Agonists and antagonists often have opposite effects on a physiological process or pathway.


Is L-dopa an agonist or antagonist for dopamine?

L-dopa is a precursor that is converted to dopamine in the brain. It is not an agonist or antagonist itself, but once converted to dopamine, it acts as an agonist on dopamine receptors.


Drug addicts require larger amounts of the drug to create a dopamine flood, or high This effect is known as what?

This effect is known as tolerance, where the body requires increasing amounts of a drug to produce the same effect. It can lead to heightened risk of overdose and other health complications in drug addicts.


What will be the effect of cholinergic agonist on the pyloric sphincter?

A cholinergic agonist will cause the pyloric sphincter to relax, leading to increased gastric emptying. This is because cholinergic stimulation promotes smooth muscle relaxation in the gastrointestinal tract, allowing food to pass through the pyloric sphincter more easily.

Related Questions

The drug effect in which one drug neutralizes another drug is?

Inverse Agonist.


The effect of a drug that is an agonist is to?

An agonist binds to a receptor and stimulates it (turns it on). An antagonist binds to a receptor and blocks it from being activated by other molecules (turns it off).


Is Pheniramine an agonist or partialagonist or antagonist?

Pheniramine is a histamine drug which have anticholinergic action but its effect is agonistic or antagonist or partialagonist. Pheniramine is a histamine drug which have anticholinergic action but its effect is agonistic or antagonist or partialagonist.


Is buprenorphine a drug?

Yes. Buprenorphine is a medication/drug which has mixed opioid agonist-antagonist properties. (It is a major component of Suboxone.)


Muscimol is a direct agonist for the gabaa receptor this means that muscimol binds to which spot on the receptor as gaba and what that is has effect as gaba?

Muscimol is a GABA A agonist effet psychotomimetic


What class of drugs is suboxone?

Suboxone is an opiate class drug/medication.


What positive modulation?

Enhancing the action of an agonist without having an individual effect itself.


What is an opiate agonist?

An opiate agonist gives the user the same feeling as would be experienced by an endorphin, which is a natural compound. The receptors in the brain that feel effects from opiates receive the opiate agonist and feel an opioid effect, even though one isn't really happening.


Is tizanidine an opioid?

Tizanidine- drug that is used as a muscle relaxant and α2-adrenergic agonist. Nowhere in the intruxions says where it cames from.


Does naltrezone show up on a drug test?

I believe you mean naltrexone. In the world of opiates, there are three major categories. 1. Agonists 2. Antagonists 3. Agonist/Antogonists An agonist is a medication, for example - Morphine, which attaches to an opiate receptor and results in pain relief, along with other actions, such as sedation, euphoria, etc. depending upon which type of opiate receptor it attaches to. An Antogonist is a medication like naltrexone, which will reverse the effect of a medication like morphine by competing for the receptor with morphine, and not allowing the agonist to work, reversing the effect of the morphine. An agonist/Antogonist is a medication like nalbuphine (Nubain) which will act differently, depending on the circumstances. If an agonist (morphine) is present in the system already, this class of medication will act like an Antogonist, thus reversing the effects of the morphine. If no agonist is present, then it will have an agonist effect and cause pain relief, etc. To answer your question, I believe it would depend upon the specific drug test, and how sensitive the particular test is for the various classes of opiates. Most tests that I am aware of check for many different opiates specifically, such as morphine, hydrocodone, oxycodone, codeine, heroin, etc. I am unaware of any testing specifically for naltrexone, but it certainly could be tested for, depending upon why the particular test is being done and the clinical circumstances.


What the difference between Analog and Agonist?

An analog is a compound that has a similar structure to another compound, usually a drug, but may have slightly different properties. An agonist is a molecule that binds to a receptor and activates it to produce a biological response. In pharmacology, an analog may act as an agonist or antagonist at a receptor, depending on its specific interaction with the receptor.


Is Adderall an agonist or antagonist?

Agonist