U.S. Department of Health & Human Services Divider Arrow National Institutes of Health Divider Arrow NCATS

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Showing 51 - 60 of 36617 results

Ixazomib (trade name Ninlaro) is a drug for the treatment of multiple myeloma in adults after at least one prior therapy, in combination with lenalidomide and dexamethasone. It is taken by mouth in form of capsules. Common side effects include diarrhea, constipation and low platelet count. Like the older bortezomib (which can only be given by injection), it acts as a proteasome inhibitor, has orphan drug status in the US and Europe. At therapeutic concentrations, ixazomib selectively and reversibly inhibits the protein proteasome subunit beta type-5 (PSMB5) with a dissociation half-life of 18 minutes. This mechanism is the same as of bortezomib, which has a much longer dissociation half-life of 110 minutes; the related drug carfilzomib, by contrast, blocks PSMB5 irreversibly. Proteasome subunits beta type-1 and type-2 are only inhibited at high concentrations reached in cell culture models. PSMB5 is part of the 20S proteasome complex and has enzymatic activity similar to chymotrypsin. It induces apoptosis, a type of programmed cell death, in various cancer cell lines. A synergistic effect of ixazomib and lenalidomide has been found in a large number of myeloma cell lines. The medication is taken orally as a prodrug, ixazomib citrate, which is a boronic ester; this ester rapidly hydrolyzes under physiological conditions to its biologically active form, ixazomib, a boronic acid. Absolute bioavailability is 58%, and highest blood plasma concentrations of ixazomib are reached after one hour. Plasma protein binding is 99%.
Cangrelor is a P2Y12 inhibitor that has been approved as an antiplatelet drug. It is marketed in the US under the brand name Kengreal and in Europe as Kengrexal. Cangrelor is an intravenous, direct-acting reversible P2Y12 inhibitor for patients undergoing percutaneous coronary intervention.
Flibanserin is the first drug to be approved for hypoactive sexual desire disorder (HSDD) in premenopausal women by the FDA in August 2015. It was originally developed as an antidepressant medication by Boehringer Ingelheim, but showed lack of efficacy in trials and was further developed as a hypoactive sexual disorder drug by Sprout Pharmaceuticals. Flibanserin's mechanism of action is attributed to its high affinity for 5-HTA1 and 5-HTA2 receptors, displaying agonist activity on 5-HTA1 and antagonist on 5-HTA2, resulting in lowering of serotonin in the brain as well as an effect on increasing norepinephrine and dopamine neurotransmitters. Flibansetrin has high affinity for serotonin receptors in the brain: it acts as an agonist on 5-HT1A and an antagonist on 5-HT2A. In vivo, flibanserin binds equally to 5-HT1A and 5-HT2A receptors. However, under higher levels of brain 5-HT (i.e., under stress), flibanserin may occupy 5-HT2A receptors in higher proportion than 5-HT(1A) receptors. It may also moderately antagonize D4 (dopamine) receptors and 5-HT2B and 5-HTB2C. Its action on neurotransmitter receptors may contribute to reduction in serotonin levels and increase in dopamine and norepinephrine levels, all of which may play part in reward processing. Flibanserin is sold under the trade name Addyi and indicated for the treatment of premenopausal women with acquired, generalized hypoactive sexual desire disorder (HSDD) as characterized by low sexual desire that causes marked distress or interpersonal difficulty.
Avibactam (formerly NXL104, AVE1330A) is a synthetic non-β-lactam, covalent, slowly reversible β-lactamase inhibitor that inhibits the activities of Ambler class A and C β-lactamases and some Ambler class D enzymes. The combination of ceftazidime with avibactam exhibited broad-spectrum activity against Ambler class A- and class C-producing Enterobacteriaceae. AVYCAZ is a combination of ceftazidime, a cephalosporin, and avibactam indicated for the treatment of patients with the following infections caused by designated susceptible microorganisms: Complicated Intra-abdominal Infections, used in combination with metronidazole and Complicated Urinary Tract Infections, including Pyelonephritis.
Peramivir is a transition-state analogue and a potent, specific influenza viral neuraminidase inhibitor. Rapivab (peramivir injection) is indicated for the treatment of acute uncomplicated influenza in patients 18 years and older who have been symptomatic for no more than 2 days. Efficacy of Rapivab is based on clinical trials in which the predominant influenza virus type was influenza A and a limited number of subjects infected with influenza B virus were enrolled. Since influenza viruses change over time emergence of resistance substitutions could decrease drug effectiveness. Other factors such as changes in viral virulence might also diminish clinical benefit of antiviral drug. Efficacy could not be established in patients with serious influenza requiring hospitalization.
Dimethyl fumarate (DMF) is the methyl ester of fumaric acid. DMF was initially recognized as a very effective hypoxic cell radiosensitizer. Later, DMF combined with three other fumaric acid esters (FAE) was licensed in Germany as oral therapy for psoriasis (trade name Fumaderm). Phase III clinical trials found that DMF (BG-12) successfully reduced relapse rate and increased time to progression of disability in multiple sclerosis (trade name Tecfidera). DMF is thought to have immunomodulatory properties without significant immunosuppression. The mechanism of action of dimethyl fumarate in multiple sclerosis is not well understood. It is thought to involve dimethyl fumarate degradation to its active metabolite monomethyl fumarate (MMF) then MMF up-regulates the Nuclear factor (erythroid-derived 2)-like 2 (Nrf2) pathway that is activated in response to oxidative stress. Dimethyl fumarate is marketed under the brand name Tecfidera.
Status:

Class (Stereo):
CHEMICAL (ACHIRAL)


Triheptanoin (also known as C7 oil) is an investigational medical food or supplement. Triheptanoin is thought to have an anaplerotic role, meaning that it can replenish substances involved in the tricarbolic acid cycle, a pathway used by cells to produce energy, providing an alternative source of energy to the brain. It supplies the body with heptanoate which can either be oxidized to propionyl-CoA directly or is metabolized by the liver to the“C5 ketones”, β-ketopentanoate and/or β-hydroxypentanoate, which are released into the blood. After one month of triheptanoin use, the level of energy production in the brain during visual stimulation had become normal in Huntington’s patients. Triheptanoin was anticonvulsant in two chronic mouse models and increased levels of anaplerotic precursor metabolites in epileptic mouse brains. Despite the unknown mechanism of triheptanoin’s anticonvulsant action, the fact that triheptanoin has been used safely in several animals and for various metabolic diseases in children and adults should expedite the ethical and regulatory approval processes for a clinical trial in medically refractory patients with epilepsy. Triheptanoin is phase II clinical trial for the treatment of glycogen storage disease type V, Huntington's disease, Rett syndrome and amyotrophic lateral sclerosis.
Elvitegravir is a human immunodeficiency virus type 1 (HIV-1) integrase strand transfer inhibitor used in combination with cobicistat, emtricitabine and tenofovir alafenamid (GENVOYA®) for the treatment of HIV-1 infection in antiretroviral treatment-experienced adults. Because integrase is necessary for viral replication, inhibition prevents the integration of HIV-1 DNA into the host genome and thereby blocks the formation of the HIV-1 provirus and resulting propagation of the viral infection.

Class (Stereo):
CHEMICAL (ABSOLUTE)



Cobicistat (GS-9350) is a potent, and selective inhibitor of human cytochrome P450 3A (CYP3A) enzymes. Cobicistat is a pharmacokinetic booster of several antiretrovirals. TYBOST (cobicistat) is indicated to increase systemic exposure of atazanavir or darunavir in combination with other antiretroviral agents in the treatment of HIV-1 infection.
Tafluprost acid is a prostanoid selective FP receptor agonist that is believed to reduce the intraocular pressure (IOP) by increasing the outflow of aqueous humor. Studies in animals and humans suggest that the main mechanism of action is increased uveoscleral outflow. A prostaglandin analogue ester prodrug used topically (as eye drops) to control the progression of glaucoma and in the management of ocular hypertension. Tafluprost was approved for use in the U.S. on February 10, 2012. Tafluprost, preserved and preservative-free formulations, received marketing approval for the reduction of elevated intraocular pressure (IOP) in open-angle glaucoma and ocular hypertension in several European and Nordic countries as well as Japan, and some other Asia Pacific markets.