RA meaning in Medical ?

Answer:

What is Receptor Antagonist mean?

A receptor antagonist is a type of receptor ligand or drug that blocks or dampens a biological response by binding to and blocking a receptor rather than activating it like an agonist. Antagonist drugs interfere in the natural operation of receptor proteins. They are sometimes called blockers; examples include alpha blockers, beta blockers, and calcium channel blockers. In pharmacology, antagonists have affinity but no efficacy for their cognate receptors, and binding will disrupt the interaction and inhibit the function of an agonist or inverse agonist at receptors. Antagonists mediate their effects by binding to the active site or to the allosteric site on a receptor, or they may interact at unique binding sites not normally involved in the biological regulation of the receptor's activity. Antagonist activity may be reversible or irreversible depending on the longevity of the antagonist–receptor complex, which, in turn, depends on the nature of antagonist–receptor binding. The majority of drug antagonists achieve their potency by competing with endogenous ligands or substrates at structurally defined binding sites on receptors.

reference

Full Form	Category
Research Article	Academic & Science
Repetitive Addressing	Academic & Science
Research Analysis	Academic & Science
Academia Româna	Academic & Science
Resident Assistant	Academic & Science
Regional Academy	Academic & Science
Research Airplane	Academic & Science
Registered Architect	Academic & Science
Return Authorization	Accounts and Finance
Remuneration and Audit	Accounts and Finance
Registeraccountant (netherlands)	Accounts and Finance
Running Account	Accounts and Finance
Revenue Incentive Agreement Undefined	Accounts and Finance
Research Assistant	Banking
Research Associate	Banking
Recovery Advisory	Business
Regulatory Agency	Business
Realtor Associate	Business
Radiation Advisory	Business
Rate Accounting	Business
Reckson Associates Realty Corporation	Business
Royal Ambassadors	Business
Research Association	Business
Roleplaying Association	Business
Regulatory Affairs	Business
Radium	Chemistry
Radiallhu Anhu	Community
Residents Association	Community
Restricted Artistic	Community
Resident Adviser	Community
Retained Autograph	Community
Reading Ability	Community
Reading Alarm	Community
Rejected Adventure	Community
Rebel Angel	Community
Real Audio	Community
Read Aloud	Community
Required Attention	Community
Really Artistic	Community
Redeemed Assassin	Community
Reading Age	Community
RainForest Alliance	Community
Rights Action	Community
Royal Academy	Community
Roger Alden	Community
Richard Attenborough	Community
Ruth Armstrong	Community
Religious Advisor	Community
Return All	Computer Assembly Language
Return Address	Computer Assembly Language
Registration Authority	Computing
Rapid Access	Computing
Review Access	Computing
Registry Agent	Computing
Restore Advanced	Computing
RaDAO	Cryptocurrency
Rosin Activated	Electronics
Random Amplitude	Electronics
Remote Access Data File	File Type
Replenishment Advisement	General
Rental Agreement	General
Resource Action	General
Rotten Apples	General
Router Advertisement	General
Regulatory Alerts	General
Roughness Average	General
Raymond Alexander	General
R Also	General
Record Attempt	General
Rely And	General
Returns Authorization	General
Reported Against	General
Raja arrived	General
Retail Arbitrage	General
Rebellious Ants	General
Reporting Address	General
Resource Academia	General
Roughness Analysis	General
Radium A	General
Robo Adversaries	General
Right Abutment	General
Royal Arch	General
Rotate Acs	General
Reader's Anonymous	General
Redifferentiation And Apoptosis	General
Ripped Analhole	General
Ricks Academy	General
Raistlin's Apprentices	General
Right Argument	General
Retarded Arsehole	General
Regional Advisor	General
Railers Anonomous	General
Raistlins Apprentice	General
Rises Above	General
Rahman Arrahman	General
Restricted Access	General
Ryan And Aneta	General
Reading Assignment	General
Real Annoyin	General
Riders And	General
Ridwaanullah Allahs	General
Recursion Available	General
Radhiallahtala And	General
Ramboldi Addicts	General
Reference Archive	General
Reader Average	General
The Real Articles	General
Reset Actors	General
Remington Arms	General
Raja Aka	General
Republic Act	Governmental
Requirements Analysis	Governmental
Rear Admiral	Governmental
Requested Action	Governmental
Rolling Acres	Governmental
Retard Advance	Governmental
Routing Area	Governmental
Resident Authority	Governmental
Recent Action	Governmental
Race Altered	Governmental
RCA Corporation	Governmental
Rainbow Alliance	Governmental
Ritual Abuse	Governmental
Route Advertisement	Governmental
Resident Agency	Governmental
Regional Assembly	Governmental
Run Away	Governmental
RAMPARDA	Indian Railway Station
Revista Arhivelor, Bucuresti	International
Ravenna (Provence)	International
RechtsAnwalt	International
Revista Arhivelor, Bucureşti	International
Respect Authority	Jobs
Residential Assistant	Jobs
Resident Advisor	Jobs
Royal Armorer	Jobs
Residental Advisor	Jobs
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Random Average	Maths
Renal Agenesis	Medical
Renal Artery	Medical
Respiratory Arrest	Medical
Retinoic Acid	Medical
Revenue Account (!)	Medical
Right Anterior	Medical
Right Atrial	Medical
Rotational Atherectomy	Medical
Rounded Atelectasis	Medical
Rhinolophus Affinis	Medical
Rheumatoid Arthritis	Medical
Right Arm	Medical
Right Atrium	Medical
Rubella Abortus	Medical
Room Air	Medical
Rheumatoid Arthrisi	Medical
Radial Artery	Medical
radioactive	Medical
radioassay	Medical
Radiographic Absorptiometry	Medical
Radionuclide Angiography	Medical
Ragweed Antigen	Medical
Receptor Antagonist	Medical
Rectus Abdominis	Medical
Refractory Anaemia	Medical
Refractory Ascites	Medical
Regional Anaesthesia	Medical
Regression Analysis	Medical
Really Annoying	Messaging
Really Awesome	Messaging
Response Action	Military and Defence
Risk Analysis	Military and Defence
Risk Assessment	Military and Defence
Rally America	Military and Defence
Military Serial Number Prefix for Non-drafted Volunteer	Military and Defence
Rubber Armoring	Military and Defence
Remote Area	Military and Defence
Red Armor	Military and Defence
Regiment of Artillerists	Military and Defence
Radio Activity	Radio Science
Republic of Armenia	Regional
Radar Altimeter (r/a Preferred)	Space Science
Range Area	Space Science
Right Aft	Space Science
Right Ascension	Space Science
Runs Against	Sports
Random Adventure	Sports
Roone Arledge	Sports
Rally Applicant	Sports
Runs Allowed	Sports