antiviral


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Related to antiviral: Antiviral drugs

antiviral

 [an″te-, an″ti-vi´ral]
1. effective against viruses.
2. an agent effective against viruses.

an·ti·vi·ral

(an'tē-vī'răl),
Opposing a virus; interfering with its replication; weakening or halting its action (for example, zidovudine, acyclovir).

antiviral

/an·ti·vi·ral/ (-vi´ral) destroying viruses or suppressing their replication, or an agent that so acts.

antiviral

(ăn′tē-vī′rəl, ăn′tī-)
adj.
1. Destroying or inhibiting the growth and reproduction of viruses.
2. Computers
a. Of or relating to antivirus software.
b. Eliminating or inhibiting the effectiveness of viruses.
n.
An antiviral drug.

antiviral

destructive to viruses.

antiviral

adjective Referring to an agent or mechanism that counters viral effects or infection.
 
noun An agent that inhibits or prevents viral infection or manages its effects; an antiviral agent.

antiviral

adjective Referring to an agent or mechanism that counters viral effects or infection noun Antiviral agent, see there.

an·ti·vi·ral

(an'tē-vī'răl)
Opposing a virus; interfering with its replication; weakening or abolishing its action.

antiviral

Acting against viruses.

Antiviral

Refers to a drug that can destroy viruses and help treat illnesses caused by them.
Mentioned in: Monkeypox

antiviral

agent opposing effect of a virus; some antiviral agents interact with some local anaesthetics (see Table 1)
Table 1: Principal drug interactions of local anaesthetic agents and other medications
Local anaesthetic agent Proprietary name Principal drug interactionsEffect of interaction
Lidocaine
Xylocaine
Antiarrhythmic agents
Antibacterial agents
Antipsychotics
Antivirals
Beta-blockers
Diuretics
Dolasetron
Ulcer-healing drugs
Increased myocardial depression
Increased risk of ventricular arrhythmias if lidocaine is given with quinpristin/dalfopristin
Increased risk of ventricular arrhythmias if lidocaine is given with any drug that prolongs the QT interval of the cardiac cycle
Plasma concentration of lidocaine increased by amprenavir, atazanavir and lopinavir
Increased myocardial depression
Increased risk of lidocaine toxicity when given with propranolol
The action of lidocaine is antagonized by the hypokalaemia caused by acetazolamide, loop diuretics or thiazide and related diuretics (i.e. a greater dose of lidocaine would be required to achieve anaesthesia)
Increased risk of ventricular arrhythmia if lidocaine is given with dolasetron
Plasma concentration of lidocaine increased when given with cimetidine; risk of lidocaine toxicity increased with cimetidine
Bupivacaine
Marcain
Levo-bupivacaine
Chirocaine
Beta-blockersIncreased risk of bupivacaine toxicity when given with propranolol
Increased risk of myocardial depression if given with other antiarrhythmic agents
Prilocaine
Citanest
Antiarrhythmic agents
Antibacterial agents
Increased risk of myocardial depression if given with antiarrhythmic agents
Increased risk of methaemoglobinaemia if given with sulphonamide antibacterial agents
Ropivacaine
Naropin
AntidepressantsMetabolism of ropivacaine is inhibited by fluvoxamine, thereby enhancing the risk of ropivacaine toxicity
Mepivacaine
Scandonest
Drug not listed in the British National Formulary

antiviral (anˈ·tē·vīˑ·rl),

n a substance that combats viral infection.

an·ti·vi·ral

(an'tē-vī'răl)
Opposing a virus; interfering with its replication; weakening or halting its action (e.g., zidovudine, acyclovir).

antiviral

1. effective against viruses.
2. an agent effective against viruses.

antiviral drugs
may be useful in early stages of some virus infections or to prevent recurrences or reactivation in chronic infections. Most drugs exert their effects only during certain stages of viral replication and many are relatively toxic for the host when used systemically. In general, chemotherapy of virus infections in animals is uncommon with limited applications, mainly in topical treatment of ophthalmic infections. Examples are idoxuridine, vidarabine, amantadine hydrochloride, acyclovir, ribavirin.
References in periodicals archive ?
After a discussion of current therapies of AIDS/HIV and their limitations, new strategies in development of antiviral agents are described.
This discovery highlights the potential for a novel approach to combating HIV/AIDS that would seek to stabilize and harness the innate antiviral activity of certain human proteins, according to lead author John Albin, a researcher in the laboratory of Reuben Harris, associate professor of biochemistry, molecular biology and biophysics in the College of Biological Sciences.
Antiviral regimens lasting 5 days are recommended for patients with confirmed or suspected 2009 Hl N1 influenza who have severe, complicated, or progressive illness, or who are hospitalized.
Although a policy of age-specific prioritization of antiviral use will be controversial ethically, it may be the most efficient use of stockpiled therapies," researchers said.
From August 17-23 a total of 231 flu friends picked up antiviral medication for people with suspected swine flu compared to 346 the week before.
For example, even though it may not be possible to predict how the drug will affect new viral strains, the drug's clinical effects and antiviral resistance profiles in seasonal influenza outbreaks contribute to the evaluation of the drug's likely utility in future circumstances.
The microarray studies indicate that the exposure of healthy immune T-cells to our antiviral drugs activates the primary immune mechanisms," said Dr.
For instance, poxviruses including vaccinia virus encode 2 proteins that interfere with RNaseL and PKR pathways and 2 soluble IFN receptors that interfere with IFN-induced antiviral pathways.
the presenting clinical investigator and Research Director for both Harvard Vanguard Medical Associates and Community Research Initiative of New England, stated, "The 200 mg dose of Reverset demonstrated potent, clinically meaningful antiviral effects in highly treatment-experienced patients, including patients carrying many of the common resistant viruses that we as physicians struggle to combat.
If residual drug activity plays a therapeutic role, as indicated by the single-drug interruption studies, then the effects of such antiviral activity would have a greater chance of being detected if more drugs are used in treatment combinations.
Until now, antiviral agents were contraindicated in patients with stabilized depression because the drugs are known to induce depressive symptoms in 20%-30% of patients.
Mice genetically engineered to lack TLR7 didn't have the strong, antiviral immune response to imidazoquinolines that normal mice do.