cyp450

2,3-dihydrothieno-Thiadiazole Carboxylate is a CYP450 (CYP2E1 and CYP2B4) inhibitor.

(±)4(5)-EpDPA methyl ester is a derivative of (±)4(5)-EpDPA which is stable enough to ship and handle routinely. The active free acid can be regenerated from the methyl ester by careful base hydrolysis. (±)4(5)EpDPA is a CYP450 metabolite of DHA which can be further metabolized to the diol metabolite. There are no published reports on the biological activity of (±)4(5)-EpDPA methyl ester at this time.

Electrolyte and fluid transport in the kidney are regulated in part by arachidonic acid and its metabolites. (±)17-HETE is the racemic version of a cytochrome P450 (CYP450) metabolite of arachidonic acid that has stereospecific effects on sodium transport in the kidney. At a concentration of 2 μM the (S)-enantiomer of 17-HETE inhibits proximal tubule ATPase activity by as much as 70%, whereas the (R)-isomer is inactive.

EDHF (endothelium-derived hyperpolarizing factor) is an unidentified mediator released from vascular endothelial cells in response to acetylcholine and bradykinin which is distinct from the NOS- (nitric oxide) and COX-derived (prostacyclin) vasodilators.[1],[2]Cytochrome P450 (CYP450) metabolism of polyunsaturated fatty acids produces epoxides such as (±)14(15)-EET which are prime candidates for the actual active mediator.[3] However, the CYP450 metabolites of eicosapentaenoic acid and docosahexaenoic acid have been little studied relative to arachidonate epoxygenase metabolites. (±)16(17)-EpDPA is the DHA homolog of (±)14(15)-EpETrE, derived via epoxidation of the 16,17-double bond of DHA. The EDHF activity of (±)16(17)-EpDPA has not yet been determined. The epoxygenase metabolites of DHA have also been detected in a mouse inflammation model.[4]

(±)18-HETE is the racemic version of a cytochrome P450 (CYP450) metabolite of arachidonic acid. When formed by the CYP2E1 isoform, 18-HETE is comprised 100% of the (R) isomer. 18(R)-HETE dose-dependently stimulates vasodilation of the rabbit kidney, whereas 18(S)-HETE does not affect perfusion pressure. 18-HETE has negligible effects on ATPase activity. 18(R)-HETE at 1 μM completely blocks 20-HETE-induced vasoconstriction of renal arterioles.

N-desmethyl Eletriptan is a metabolite of eletriptan .1It is formed from eletriptan primarily by the cytochrome P450 (CYP) isoform CYP3A4 in human liver microsomes. 1.Evans, D.C., O’Connor, D., Lake, B.G., et al.Eletriptan metabolism by human hepatic CYP450 enzymes and transport by human P-glycoproteinDrug Metab. Dispos.31(7)861-869(2003)

Eicosapentaenoic acid is converted to epoxyeicosatetraenoic acids (EpETEs) by several cytochrome P450 isoforms. The major product of this epoxygenase pathway, (±)17(18)-EpETE , relaxes vascular and airway smooth muscle by activating large conductance Ca2+-activated K+ (BKCa) channels by directly interacting with BKα channel subunits. (±)8(9)-EpETE is an epoxygenase pathway product produced from EPA by CYP450 both in vitro and in vivo. The biological actions and physiological effects of this epoxide remain to be determined.

EDHF (endothelium-derived hyperpolarizing factor) is an unidentified mediator released from vascular endothelial cells in response to acetylcholine and bradykinin which is distinct from the NOS- (nitric oxide) and COX-derived (prostacyclin) vasodilators. Cytochrome P450 (CYP450) metabolism of polyunsaturated fatty acids produces epoxides such as (±)14(15)-EpETrE which are prime candidates for the actual active mediator. However, the CYP450 metabolites of eicosapentaenoic acid and docosahexaenoic acid have been little studied relative to arachidonate epoxygenase metabolites. (±)19(20)-EpDPA is a DHA epoxygenase metabolite, derived via epoxidation of the ω-3 double bond of DHA. The EDHF activity of (±)19(20)-EpDPA has not yet been determined. The epoxygenase metabolites of DHA have also been detected in a mouse inflammation model.

Electrolyte and fluid transport in the kidney are regulated in part by arachidonic acid and its metabolites. Electrolyte and fluid transport in the kidney are regulated in part by arachidonic acid and its metabolites.17-HETE is a cytochrome P450 (CYP450) metabolite of arachidonic acid that has stereospecific effects on sodium transport in the kidney.17(S)-HETE inhibits proximal tubule ATPase activity by as much as 70% at a concentration of 2 μM.

CAY10462 (CTK8E8405) is an effective and selective inhibitor of the 20-HETE synthase CYP4A11 with an IC50 of 8.8 nM. CAY10462 exhibits nearly 200 times less potent for 1A, 1C, and 3A CYP450 enzymes.

Electrolyte and fluid transport in the kidney are regulated in part by arachidonic acid and its metabolites. 16-HETE is a minor CYP450 metabolite of arachidonic acid released by the kidney upon angiotensin II stimulation that demonstrates stereospecific biological activity. Electrolyte and fluid transport in the kidney are regulated in part by arachidonic acid and its metabolites. 16-HETE is a minor CYP450 metabolite of arachidonic acid released by the kidney upon angiotensin II stimulation that demonstrates stereospecific biological activity. 16(S)-HETE inhibits proximal tubule ATPase activity by as much as 60% at a concentration of 2 µM.[1]

19-HETE is one of the major cytochrome P450 (CYP450) metabolites of arachidonic acid that is released from the kidney in response to angiotensin II. When formed by the CYP2E1 isoform, 19-HETE is composed of 70% and 30% of the (S) and (R) stereoisomers, respectively. Both 19(S)- and 19(R)-HETE are potent vasodilators of renal preglomerular vessels. 19(S)-HETE stimulates both renal sodium-potassium ATPase and volume absorption in the rabbit proximal straight tubule.

(±)11(12)-EET is a fully racemic version of the R/S enantiomeric forms biosynthesized from arachidonic acid by cytochrome P450 enzymes.[1][2][3[]A higher proportion of 11(R),12(S)-EET is produced by the CYP450 isoforms CYP2C23 and CYP2C24 while CYP2B2 produces a higher proportion of 11(S),12(R)-EET.[3]11(12)-EET has been shown, along with 8(9)-EET to play a role in the recovery of depleted calcium pools in cultured smooth muscle cells[4] It also inhibits basolateral 18-pS potassium channels in the renal cortical collecting duct when used at a concentration of 100 nM.[5]11(12)-EET (50 μg/kg per day) increases adhesion of isolated peripheral blood leukocytes in a chamber coated with P-selectin and ICAM-1 but does not affect choroidal neovascularization size following laser photocoagulation[6] It also has anti-inflammatory, angiogenic, and cardioprotective properties[7]

Electrolyte and fluid transport in the kidney are regulated in part by arachidonic acid and its metabolites. Electrolyte and fluid transport in the kidney are regulated in part by arachidonic acid and its metabolites. 17-HETE is a cytochrome P450 (CYP450) metabolite of arachidonic acid that has stereospecific effects on sodium transport in the kidney. 17(R)-HETE is an inactive isomer of 17-HETE, whereas the (S) enantiomer can inhibit proximal tubule ATPase activity at a concentration of 2 μM.

Tetrahydropiperine (Cosmoperine) is a natural product derived from piperine, can be used to treat convulsion, epilepsy, relieve pain, and control insects.

Electrolyte and fluid transport in the kidney are regulated in part by arachidonic acid and its metabolites. (±)16-HETE is the racemic version of a minor CYP450 metabolite of arachidonic acid released by the kidney upon angiotensin II stimulation. The biological activity of 16-HETE is stereospecific. 16(R)-HETE dose-dependently stimulates vasodilation of the rabbit kidney, however 16(S)-HETE does not affect perfusion pressure. At a concentration of 2 μM the (S)-enantiomer of 16-HETE inhibits proximal tubule ATPase activity by as much as 60%, whereas the (R)-isomer has negligible effects on ATPase activity.

EDHF (endothelium-derived hyperpolarizing factor) is an unidentified mediator released from vascular endothelial cells in response to acetylcholine and bradykinin which is distinct from the NOS- (nitric oxide) and COX-derived (prostacyclin) vasodilators. Cytochrome P450 (CYP450) metabolism of polyunsaturated fatty acids, produces epoxides such as (±)14(15)-EpETrE which are prime candidates for the actual active mediator. However, the CYP450 metabolites of eicosapentaenoic acid and docosahexaenoic acid have been little studied relative to arachidonate epoxygenase metabolites. (±)14(15)-EpETE is the ω-3 homolog of 14(15)-EpETrE, derived via epoxidation of the 14,15-double bond of EPA. The EDHF activity of (±)14(15)-EpETE has not yet been determined.

Electrolyte and fluid transport in the kidney are regulated in part by arachidonic acid and its metabolites. 16-HETE is a minor CYP450 metabolite of arachidonic acid released by the kidney upon angiotensin II stimulation that demonstrates stereospecific biological activity. 16(S)-HETE inhibits proximal tubule ATPase activity by as much as 60% at a concentration of 2 μM.

Levobupivacaine hydrochloride ((S)-(-)-Bupivacaine monohydrochloride) is a reversible neuronal sodium channel inhibitor, which is the pure S(-)-enantiomer of bupivacaine. It was utilized as a long-acting local anesthetic.

Avanafil metabolite M4 is a major active metabolite of the phosphodiesterase 5 (PDE5) inhibitor avanafil . Avanafil is metabolized by the cytochrome P450 (CYP450) isoforms CYP3A4 and CYP2C to the major metabolites avanafil metabolite M4 and avanafil metabolite M16 , as well as minor metabolites. Avanafil metabolite M4 inhibits PDE5 with 18% of the potency of avanafil.

Isoetharine mesylate salt (Isoetarine mesilate) is a β-adrenergic receptor agonist. it also is pregnane X receptor (PXR) activator capable of upregulating CYP450 expression.

Liarozole dihydrochloride is a cytochrome P450 (CYP450) dependent inhibitor, orally active, it also a potent inhibitor of estrogen (via inhibition of aromatase) and testicular androgen synthesis (inhibition of 17 ,20-lyase).Liarozole dihydrochloride is an imidazole derivative; it is being investigated as a non-hormonal agent in prostate cancer and in the treatment of various other cancers and skin disorders.

Sulfaphenazole (Plisulfan) is an inhibitor of CYP2C9 (Ki: 0.3 μM) that demonstrates at least 100-fold selectivity over other CYP450 isoforms (Ki: 63/29 μM for CYP2C8/CYP2C18, respectively, and no activity at CYP1A1, CYP1A2, CYP3A4, CYP2C19). At 10 μM, sulfaphenazole has been shown to inhibit endothelium-derived hyperpolarizing factor synthase, a CYP450 isozyme in the porcine coronary artery homologous to CYP2C8/9 that generates reactive oxygen species in coronary endothelial cells and modulates vascular tone and homeostasis.

Squalane is a lipid found in some fish oils (especially shark liver oil) and some vegetable oils. It has anticancer and antioxidant properties and is used as a skin moisturizer and emollient.

1-Phenylpyrrole (NSC-16581) is an inhibitor of CYP450 dependant monooxygenase activity in microsomes from rat liver.

Paritaprevir (ABT450) is an inhibitor of non-structural protein 3/4A protease with EC50 values of 1 and 0.21 nM for HCV 1a and HCV 1b, respectively.

CS640 is a selective calmodulin-dependent kinase inhibitor, targeting multiple isoforms, namely CaMK1D, CaMK1B, CaMK1A, CaMK1G, PIP5K1C, MEK5, RIPK4, and MLK3, with respective IC50 values of 0.08, 0.03, 0.001, 0.001, 11.2, 0.025, 5.69, and 2.75 μM. Additionally, CS640 exhibits inhibitory properties toward CYP450 enzymes 2C9 and 2C19 with IC50 values of 6 and 10 μM, correspondingly [1].

Doxepin D3 Hydrochloride is a deuterium-labeled doxepin hydrochloride.Doxepin hydrochloride is an oral active tricyclic antidepressant used as a sedative.Doxepin hydrochloride is also an effective CYP450 inhibitor, significantly inhibiting CYP450 2C19 and

HET0016 is a potent and selective 20-HETE synthase inhibitor (IC50s: 17.7 nM, 12.1 nM, and 20.6 nM for recombinant CYP4A1-, CYP4A2- and CYP4A3-catalyzed 20-HETE synthesis). HET0016 also is a selective CYP450 inhibitor, which has been shown to inhibit angi

Biosynthesis of 12(R)-HETE in invertebrates is via lipoxygenation of arachidonic acid . In mammals, 12(R)-HETE can be produced by 12(R)-LOs and also by CYP450 oxidation. The activity of 12(R)-HETE in mammals is predominantly proinflammatory. 12(R)-HETE exhibits dose-dependent leukocyte chemotaxis at concentrations as low as 100 nM, and lowers intraocular pressure in rabbits.

BVT948 is a protein tyrosine phosphatase (PTP) inhibitor. It can also inhibit several CYP450 isoforms and lysine methyltransferase SETD8 (KMT5A).

Levobupivacaine is an amino-amide local anaesthetic drug belonging to the family of n-alkylsubstituted pipecoloxylidide. It is the S-enantiomer of bupivacaine. Levobupivacaine hydrochloride is commonly marketed by AstraZeneca under the trade name Chirocaine. Compared to bupivacaine, levobupivacaine is associated with less vasodilation and has a longer duration of action. It is approximately 13 per cent less potent (by molarity) than racemic bupivacaine.Levobupivacaine is indicated for local anaesthesia including infiltration, nerve block, ophthalmic, epidural and intrathecal anaesthesia in adults; and infiltration analgesia in children. Adverse drug reactions (ADRs) are rare when it is administered correctly. Most ADRs relate to administration technique (resulting in systemic exposure) or pharmacological effects of anesthesia, however allergic reactions can rarely occur.

Quilseconazole is an effective, orally active fungal Cyp51 inhibitor. it also binds tightly to cryptococcal CYP51 but weakly inhibits humans CYP450 enzymes.

NPD-2975 (compound 30) is an orally active antitrypanosomal agent effective against Human African Trypanosomiasis (HAT), demonstrating acceptable metabolic stability and low toxicity potential in human MRC-5 lung fibroblasts, as well as in an acute mouse model of T. b. brucei infection. It inhibits T. b. brucei with an in vitro IC50 of 70 nM and yields IC50 values of 0.16 μM and 0.42 μM against CYP1A2 and CYP2C19 enzymes, respectively [1].

Eicosapentaenoic acid (EPA) is metabolized into epoxyeicosatetraenoic acids (EpETE) by multiple cytochrome P450 isoforms. The predominant compound of this epoxygenase pathway, (±)17(18)-EpETE, induces relaxation in vascular and airway smooth muscles through its action on large conductance Ca2+-activated K+ (BKCa) channels, specifically by binding to the BKα channel subunits. Another notable epoxygenase pathway derivative, (±)11(12)-EpETE, also generated from EPA via CYP450 activity in both in vitro and in vivo studies, has biological and physiological roles that are yet to be fully elucidated.

Doxepin hydrochloride (Aponal) is a dibenzoxepin tricyclic compound. It displays a range of pharmacological actions including maintaining adrenergic innervation. Its mechanism of action is not fully understood, but it appears to block reuptake of monoaminergic neurotransmitters into presynaptic terminals. It also possesses anticholinergic activity and modulates antagonism of histamine H(1)- and H(2)-receptors.

Avanafil metabolite M16 is a major inactive metabolite of the phosphodiesterase 5 (PDE5) inhibitor avanafil . Avanafil is metabolized by the cytochrome P450 (CYP450) isoforms CYP3A4 and CYP2C to the major metabolites avanafil metabolite M16 and avanafil metabolite M4 , as well as minor metabolites.

Polygalaxanthone III can significantly inhibit chlorzoxazone 6-hydroxylation catalyzed by CYP2E1.

1. Humantenmine is a toxic compound isolated from Gelsemium elegans Benth . 2. Humantenmine and koumine may inhibit several CYP450 enzyme activities.

Paritaprevir dihydrate (ABT-450), a highly effective and orally administered antiviral, acts as a non-structural protein 3/4A (NS3/4A) protease inhibitor, displaying EC50 values of 1 and 0.21 nM against HCV genotypes 1a and 1b, respectively. Additionally, it functions as a SARS-CoV 3CL pro inhibitor with an IC50 of 1.31 μM. Primarily metabolized by cytochrome P450 (CYP) 3A, its plasma concentration and half-life are significantly increased when administered with Ritonavir, a CYP450 inhibitor [1] [2] [3] [4].

Liarozole (R75251 dihydrochloride) is a cytochrome P450 (CYP450) dependent inhibitor, orally active, it also a potent inhibitor of estrogen (via inhibition of aromatase) and testicular androgen synthesis (inhibition of 17 ,20-lyase).Liarozole dihydrochloride is an imidazole derivative; it is being investigated as a non-hormonal agent in prostate cancer and in the treatment of various other cancers and skin disorders.

Liarozole HCl is a benzimidazole derivative with antineoplastic activity. As a retinoic acid metabolism blocking agent, liarozole inhibits CYP450-dependent all-trans-retinoic acid (ATRA)-4-hydroxylase, leading to an increase in endogenous ATRA production,

As a tricyclic antidepressant, Doxepin inhibits the reuptake of serotonin and norepinephrine. Doxepin shows therapeutic effects on atopic dermatitis and chronic urticaria that also improves cognitive processes as well as protect the central nervous system. Doxepin has anti-inflammatory effects and reduces oxidative stress[1] [2] [3].