blockade

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blockade

 [blok-ād´]
1. in pharmacology, the blocking of the effect of a neurotransmitter or hormone by a drug.
2. in histochemistry, a chemical reaction that modifies certain chemical groups and blocks a specific staining method.
adrenergic blockade selective inhibition of the response to sympathetic impulses transmitted by epinephrine or norepinephrine at alpha or beta receptor sites of an effector organ or postganglionic adrenergic neuron. See also adrenergic blocking agent.
cholinergic blockade selective inhibition of cholinergic nerve impulses at autonomic ganglionic synapses, postganglionic parasympathetic effectors, or neuromuscular junctions. See also cholinergic blocking agent.
ganglionic blockade inhibition by drugs of nerve impulse transmission at autonomic ganglionic synapses; see also ganglionic blocking agent.
narcotic blockade inhibition of the euphoric effects of narcotic drugs by the use of other drugs, such as methadone, in the treatment of addiction.
neuromuscular blockade a failure in neuromuscular transmission that can be induced pharmacologically or result from any of various disturbances at the myoneural junction. See also neuromuscular blocking agent.
sympathetic blockade block of nerve impulse transmission between a preganglionic sympathetic fiber and the ganglion cell.

block·ade

(blok-ād'),
1. The occupation of receptors by an antagonist so that usual agonists are relatively ineffective.
2. Receptor blockade, blocking the effect of a hormone at the cell surface.
3. Arrest of nerve impulse conduction or transmission at autonomic synaptic junctions, autonomic receptor sites, or neuromuscular junctions by various means, most often pharmacotherapy.
4. Intravenous injection of large amounts of colloidal dyes or other substances to block reticuloendothelial cells (for example, phagocytosis is temporarily prevented).

block·ade

(blok-ād')
1. Isolation of an organ, tissue, or system from communication with orinfluence by external forces or events.
2. Receptor blockade, blocking the effect of a hormone at the cell surface.
3. Arrest of peripheral nerve conduction or transmission at autonomic synaptic junctions, autonomic receptor sites, or myoneural junctions by a drug.
4. The occupation of receptors by an antagonist so that usual agonists are relatively ineffective.

blockade

The use of a drug to occupy, seal, or otherwise render inoperative, a receptor for natural hormones or neurotransmitters.

Patient discussion about blockade

Q. what does a sun block cream do? and what are a UV rays?

A. It blocks out harmful Ultra violet rays from the skin as the previous entries have related; however it can also block your ability to produce vitamin D. If you live in a northerly area or one that receives limited sunlight, its recommended to get at least 15 minutes of sun a day (this is probably best done with minimal sunblock) and according to personnal sun sensitivity. Another thing to keep in mind is that sunblock works best if applied 20 minutes before sun exposure.

Q. my son is 5 and half yrs old.he is having veezing and 75%block in one nose because of adenod.is is curable he has taken steriods for one and half yrs but with not much relief for veezing. then we switched on to ayur medicines,where he had some pigmentation at some places in his body. so again we are back to allopathy. he has one nasal steriod spray now with few other medicines. in his last test, dr, said he has adenod about 75% blcok in one nose, he has prescribed medicines for one month. he has also said that a small surgery can be done to remove adenod. i would like to know how long this surgry wil take and how much of rest he wil have to take. and if this adenod is removed, wil his other problem like veezing be cured? indira rajesh

A. it's a pretty common surgery from what i remember. most of our family has any kind of nasal problem...sinusitis..adenoids...just name it. the surgery is entering through the mouth (under full sedation) and lasering/curetting - removed. it took about a week to recover , eating soft foods..and it worked!

More discussions about blockade
References in periodicals archive ?
For the young blockaders, the presence of the Elders validated their course of action, since Haida law teaches that young people must follow the wisdom of their Elders when it comes to the right way to interact with nature.
Some blockaders, for example, describe the positive results of their activist work by explicitly citing "cultural revitalization" and the associated sense of pride developing among their community's youth.
Now we have seen the power of the blockaders and the damage they can do.
Determined, honest, and efficient, Raum was a superb field general against the blockaders. He and his lieutenants convinced the "mountain dew" forces that the government intended to pursue them relentlessly until they gave in and that submission was probably better than continued conflict.
Spunky Qatar refused to give in to the demands of the Arab blockaders, which included shutting down its Al Jazeera television channel and scaling down ties with Iran.
But the awkwardness facing the Saudi-led blockaders is more than that:
He said,"Until the illegal blockade is lifted, the QCB will work to ensure our financial sector and economy remain robust and stable despite the illegal actions of the blockaders."
The UN and US comments came days after Bangladesh's High Court ordered government steps to stop violence and anarchic activities as the current spate of unrest while nearly 70 of the casualty victims were killed in clandestine arson attacks when the suspected blockaders or hired goons hurled fire bombs on buses and trucks.
Officers entered the building, seized a banner reading "End Drone Research," and forced the blockaders out.
Mostly, Sock revealed, New Brunswick's largest Indigenous community is "trying to heal" from the police raid, as blockaders continue to face the courts and support pours in from across the continent.
How can we achieve this in this situation, which is dictated and vitiated by the blockaders?"
more easily protect the nearby sea-lanes and gain access to the Indian Ocean." (52) But a canal across the isthmus could cost twenty billion dollars or more to build and, like the Burma-China pipeline, would simply concentrate the target set for potential blockaders.