Doctor insights on:
Noradrenaline Vs Adrenaline Receptors
Why does acetylcholine, an inhibitory neurotransmitter, cause the adrenal glands to release stimulatory hormones?
Not correct: Hi. Acetyl choline (ACh) is not an inhibitory neurotransmitter. The sympathetic nervous system uses ACh as the neurotransmitter in the sympathetic ganglia (the 1st synapse outside the CNS). Usually that's from one neuron to another, but in the adrenal medulla, the cells are really the second neuron, but they release their contents (catecholamines) into the blood, not onto an organ (like the heart) ...Read moreSee 1 more doctor answer
An organ, cell or molecule that accepts an outside signal and causes an internal change. Eyes receive light, touch receptors send messages to the brain when stimulated by pressure and estrogen receptors bind Estradiol causing responses of normal breast, ovary and uterus cells to rising and falling levels of the female steroid hormones. Most of the time "receptor" refers to one ...Read more
Atomoxetine inhibits serotonin transporter, dopamine transporter and naroephinephrine. What does inhibit mean?
Strattera (atomoxetine): Inhibition is the opposite of stimulation, so the effectiveness is reduced. ...Read more
Yes and no: They are both catecholamines, a specific type of chemical class. In the body, there are different type of receptors in tissues which bind catechols with different effects. Dopamine and doubtamine have different affinities for different receptors and thus can have different effects. Kind of like different types of baking sugars...They are all sugars but are used for special purposes and functions. ...Read moreSee 1 more doctor answer
Excitatory: Histamine is actually classified as an excitatory neurotransmitter in the brain responsible for the sleep wake cycle. Too much of it can keep you awake. That is why it is used in many commercial sleep aides seen with the letters "pm" attached to some kind of pain killer. A common side-effect of a histamine blocker like Diphenhydramine (benadryl) is drowsiness. ...Read more
No: At this time, there is no evidence to suggest this. As one may imagine, few if any studies have been performed in humans to look for this. ...Read more
Yes: The caffeine in coffee blocks Adenosine receptors, which when activated make you tired and sleepy. This blockade also affects all major neurotransmitters, such as dopamine, acetylcholine, serotonin -- and in high doses, norepinephrine too. Dopamine effects are not in the exact same regions of the brain that other addictive substances affect, though. ...Read moreSee 1 more doctor answer
Can an antagonist (propranolol) cause an inhibitory effect via beta-adrenoreceptors in cardiac myocytes?
Beta blockers: Yes.Get a more detailed answer ›
Receptors: These three medications are used to support the heart and cardiovascular system ie. blood pressure and heart rate. They are known as sympathomimetics and have a similar response to what you would think of as adrenaline. Each has variable effect on either heart rate, heart function (in terms of strength of 'squeeze') and on blood vessels which would translate to higher blood pressure. ...Read more
Yes.: Your statement is correct.Get a more detailed answer ›
The form it comes in: Adrenaline is the chemical. Racemic epi is epi in an aerosol diluted form to deliver into the lungs to function as a bronchodilator and treats bronchial constriction, like in asthma or after removing an endo tracheal tube after surgery. It is a sympathetic (adrenaline) drug that leads to dilating the bronchial tubes. ...Read more
Alters physiology: These are very simple answers to a complex question. Levophed (norepinephrine) increases blood pressure; Dopamine increases heart rate, blood pressure and cardiac function (contractility); Dobutamine increases cardiac contractility and heart rate. ...Read moreSee 1 more doctor answer
Only noradrenergic antidepressant works for me, does inderal (propranolol) acts negative on noradrenergic effects of antidepressant ?At vasomotor centers.Regards.
Venlafaxine: It's not the vasomotor centers that are important in antidepressant response; it's the neuron synapses in the brain. Effexor (venlafaxine) inhibits reuptake of both serotonin and ne. Inderal can suppress some of the physical symptoms of anxiety (rapid heart rate, sweaty palms, tremulousness, etc). Some on chronic (not intermittent or "prn") Inderal have had more depression. Not everyone. You should be okay. ...Read more
Not safe: GABA antagonists are not routinely prescribed for GABA A receptor upregulation. The main one flumazenil (clonazepam) is used for overdoses from benzodiazepines in an ER setting. It may cause withdrawal seizures. Your best bet is to detox and enter a drug tx program for alcohol or sedative-hypnotic dependence issues. ...Read more