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 ?
At this milestone in time, it appears that the blockading powers have less control over Qatar than ever.
Even where a blockading belligerent is unscrupulous enough to impose a blockade in order to starve civilians, it will likely be possible to construe some other military advantage to the blockade that might help it evade liability under this rule.
Defending against these threats would tax the blockading navy by forcing individual ships to be on the tactical defensive throughout the region, thereby straining the theater's military forces overall as they struggled to protect vulnerable infrastructure.
Submarines were used in both world wars as blockading forces
Speaking to local Arabic daily Arrayah, they expressed their pride in the steps taken by the government to counter the immediate impact of the abrupt and unjustifiable move by the four blockading countries.
Marri noted that there had been many shifts in the standpoints of the blockading countries after the issuing of the United Nations' report that indicated numerous violations of human rights owing to the blockade.
Tribune News Network Doha Qatar is concerned about the grave violations committed by the blockading countries and the closure of diplomatic means to resolve the ongoing Gulf crisis, Foreign Ministry Spokesperson HE Lulwah al Khater has said.
This is evident from the fact that Chad, which had recalled its ambassador from Doha soon after the blockade under pressure from the blockading countries to take side in the Gulf dispute for very well-known reasons, has agreed to restore diplomatic relations with Qatar.
Maneesh Bakshi Doha QATAR can now move forward to claim damages for the human rights violations committed by the blockading countries on the basis of the report compiled by the technical team of the United Nations (UN) through legal arbitration, said the spokesperson of the Ministry of Foreign Affairs (MoFA) of Qatar, Lulwah al Khater on Wednesday.
He said,"Qatari citizens were expelled from the blockading nations and citizens of these nations who were living and working in Qatar were also forced by their countries to leave Qatar."
Tourism Finally, as a result of the decline in visitors to Qatar from the blockading countries, the authorities have launched a renewed drive to attract international tourists, QNB said.
"We have warned, repeatedly, that imposing repression over reform and development, using the law of power instead of the power of law, is detrimental to the global counterterrorism efforts,"the FM said, pointing out,"This blockade imposed on Qatar is the use of intimidation against our people for political gain." The FM said that the second weapon used by the blockading countries was the abuse of human rights, as thousands of families have been separated, women from their children, husbands from their wives, students from their right to education.