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Identification
- Summary
Betamethasone phosphate is a fast acting ester prodrug of a corticosteroid used to treat inflammatory conditions.
- Generic Name
- Betamethasone phosphate
- DrugBank Accession Number
- DB14669
- Background
Betamethasone phosphate is a prodrug that is rapidly hydrolyzed, providing rapidly accessible betamethasone to agonize glucocorticoid receptors.5 Betamethasone provides greater anti-inflammatory activity than prednisolone with less sodium and water retention.5
Betamethasone sodium phosphate was granted FDA approval on 3 March 1965.5
- Type
- Small Molecule
- Groups
- Approved, Vet approved
- Structure
Structure for Betamethasone phosphate (DB14669)
- Weight
- Average: 472.446
Monoisotopic: 472.166233087 - Chemical Formula
- C22H30FO8P
- Synonyms
- Betamethasone 21-(dihydrogen phosphate)
- Betamethasone 21-phosphate
- Betamethasone dihydrogen phosphate
Pharmacology
- Indication
Betamethasone phosphate is indicated intramuscularly to treat allergic states, dermatologic diseases, endocrine disorders, gastrointestinal diseases, hematologic disorders, neoplastic diseases, nervous system conditions, ophthalmic diseases, renal diseases, respiratory diseases, rheumatic disorders, trichinosis with neurologic or myocardial involvement, and tuberculous meningitis with subarachnoid block or impending block.5 It is also used intra-articularly in the treatment of acute gouty arthritis, acute and subacute bursitis, acute nonspecific tenosynovitis, epicondylitis, rheumatoid arthritis, and synovitis of osteoarthritis.5 Intralesional betamethasone phospahte is indicated in the treatment of alopecia areata, discoid lupus erythematosus, keloids, lichen planus, lichen simplex chronicus, psoriatic plaques, necrobiosis lipoidica diabeticorum, and localized hypertrophic, infiltrated, inflammatory lesions of granuloma annulare.5
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Indication Type Indication Combined Product Details Approval Level Age Group Patient Characteristics Dose Form Treatment of Acute gouty arthritis •••••••••••• ••••••••• Treatment of Allergic conditions •••••••••••• ••••••••• Treatment of Alopecia areata (aa) •••••••••••• ••••••••• Treatment of Dermatological disease •••••••••••• ••••••••• Treatment of Discoid lupus erythematosus (dle) •••••••••••• ••••••••• - Contraindications & Blackbox Warnings
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Corticosteroids bind to the glucocorticoid receptor, inhibiting pro-inflammatory signals, and promoting anti-inflammatory signals.2 Betamethasone phosphate has a short duration of action as it is rapidly hydrolyzed to betamethasone.5 Corticosteroids have a wide therapeutic window as patients may require doses that are multiples of what the body naturally produces.2 Patients taking corticosteroids should be counselled regarding the risk of hypothalamic-pituitary-adrenal axis suppression and increased susceptibility to infections.2
- Mechanism of action
Betamethasone phosphate is a soluble ester prodrug of betamethasone.5 Betamethasone is rapidly de-esterified, allowing betamethasone to act as an agonist of the glucocorticoid receptor.5 The short term effects of corticosteroids are decreased vasodilation and permeability of capillaries, as well as decreased leukocyte migration to sites of inflammation.2 Corticosteroids binding to the glucocorticoid receptor mediates changes in gene expression that lead to multiple downstream effects over hours to days.2
Glucocorticoids inhibit neutrophil apoptosis and demargination; they inhibit phospholipase A2, which decreases the formation of arachidonic acid derivatives; they inhibit NF-Kappa B and other inflammatory transcription factors; they promote anti-inflammatory genes like interleukin-10.2
Lower doses of corticosteroids provide an anti-inflammatory effect, while higher doses are immunosuppressive.2 High doses of glucocorticoids for an extended period bind to the mineralocorticoid receptor, raising sodium levels and decreasing potassium levels.2
Target Actions Organism AGlucocorticoid receptor agonistHumans UAnnexin A1 agonistHumans - Absorption
An intramuscular injection of 3mg betamethasone acetate and 3mg betametasone phosphate reaches a betamethasone Cmax 33.21 ± 8.71 ng/mL, with a Tmax of 1.56 ± 1.32 h, and an AUC of 506.95 ± 125.03 ng*h/mL.1
- Volume of distribution
The volume of distribution of betamethasone in an intramuscular injection of 3mg betamethasone acetate and 3mg betamethasone phosphate is 226.00 ± 61.64 L.1
- Protein binding
Corticosteroids are generally bound to corticosteroid binding globulin3 and serum albumin4 in plasma.
- Metabolism
Betamethasone phosphate is rapidly de-esterified to betamethasone.5
Hover over products below to view reaction partners
- Route of elimination
Corticosteroids are eliminated predominantly in the urine.4
- Half-life
The half life of betamethasone in an intramuscular injection of 3mg betamethasone acetate and 3mg betamethasone phosphate is 12.47 ± 1.91 h.1
- Clearance
The clearance of betamethasone in an intramuscular injection of 3mg betamethasone acetate and 3mg betamethasone phosphate is 12.62 ± 3.45 L/h.1
- Adverse Effects
Improve decision support & research outcomesWith structured adverse effects data, including: blackbox warnings, adverse reactions, warning & precautions, & incidence rates. View sample adverse effects data in our new Data Library!Improve decision support & research outcomes with our structured adverse effects data.- Toxicity
Patients experiencing an acute overdose should be treated with symptomatic and supportive treatment.5 Chronic overdoses where patients require continued therapy can be treated through temporary dose reduction or alternate day treatment.5
The oral, intraperitoneal, and intravenous LD50 values in rats are 1877 mg/kg, 1179 mg/kg, and 1276 mg/kg, respectively.6
- Pathways
- Not Available
- Pharmacogenomic Effects/ADRs
- Not Available
Interactions
- Drug Interactions
- This information should not be interpreted without the help of a healthcare provider. If you believe you are experiencing an interaction, contact a healthcare provider immediately. The absence of an interaction does not necessarily mean no interactions exist.
Drug Interaction Integrate drug-drug
interactions in your softwareAbametapir The serum concentration of Betamethasone phosphate can be increased when it is combined with Abametapir. Abemaciclib The metabolism of Abemaciclib can be increased when combined with Betamethasone phosphate. Acalabrutinib The metabolism of Acalabrutinib can be increased when combined with Betamethasone phosphate. Acarbose The risk or severity of hyperglycemia can be increased when Betamethasone phosphate is combined with Acarbose. Aceclofenac The risk or severity of gastrointestinal irritation can be increased when Betamethasone phosphate is combined with Aceclofenac. - Food Interactions
- No interactions found.
Categories
- Drug Categories
- Adrenal Cortex Hormones
- Corticosteroids
- Cytochrome P-450 CYP3A Inducers
- Cytochrome P-450 CYP3A Substrates
- Cytochrome P-450 CYP3A4 Inducers
- Cytochrome P-450 CYP3A4 Inducers (strength unknown)
- Cytochrome P-450 CYP3A4 Substrates
- Cytochrome P-450 CYP3A5 Inducers
- Cytochrome P-450 CYP3A5 Inducers (strength unknown)
- Cytochrome P-450 Enzyme Inducers
- Cytochrome P-450 Substrates
- Fused-Ring Compounds
- Glucocorticoids
- Hormones
- Hormones, Hormone Substitutes, and Hormone Antagonists
- OAT3/SLC22A8 Substrates
- P-glycoprotein inducers
- P-glycoprotein substrates
- Pregnadienes
- Pregnadienetriols
- Pregnanes
- Steroids
- Steroids, Fluorinated
- Chemical TaxonomyProvided by Classyfire
- Description
- This compound belongs to the class of organic compounds known as gluco/mineralocorticoids, progestogins and derivatives. These are steroids with a structure based on a hydroxylated prostane moiety.
- Kingdom
- Organic compounds
- Super Class
- Lipids and lipid-like molecules
- Class
- Steroids and steroid derivatives
- Sub Class
- Pregnane steroids
- Direct Parent
- Gluco/mineralocorticoids, progestogins and derivatives
- Alternative Parents
- 20-oxosteroids / 11-beta-hydroxysteroids / 17-hydroxysteroids / 3-oxo delta-1,4-steroids / Halogenated steroids / Delta-1,4-steroids / Glycerone phosphates / Monoalkyl phosphates / Tertiary alcohols / Alpha-hydroxy ketones show 8 more
- Substituents
- 11-beta-hydroxysteroid / 11-hydroxysteroid / 17-hydroxysteroid / 20-oxosteroid / 3-oxo-delta-1,4-steroid / 3-oxosteroid / 9-halo-steroid / Alcohol / Aliphatic homopolycyclic compound / Alkyl fluoride show 26 more
- Molecular Framework
- Aliphatic homopolycyclic compounds
- External Descriptors
- 11beta-hydroxy steroid, 17alpha-hydroxy steroid, 20-oxo steroid, steroid phosphate, fluorinated steroid, 3-oxo-Delta(1),Delta(4)-steroid (CHEBI:68603)
- Affected organisms
- Not Available
Chemical Identifiers
- UNII
- YJO1F9W10R
- CAS number
- 360-63-4
- InChI Key
- VQODGRNSFPNSQE-DVTGEIKXSA-N
- InChI
- InChI=1S/C22H30FO8P/c1-12-8-16-15-5-4-13-9-14(24)6-7-19(13,2)21(15,23)17(25)10-20(16,3)22(12,27)18(26)11-31-32(28,29)30/h6-7,9,12,15-17,25,27H,4-5,8,10-11H2,1-3H3,(H2,28,29,30)/t12-,15-,16-,17-,19-,20-,21-,22-/m0/s1
- IUPAC Name
- {2-[(1R,2S,3aS,3bS,9aS,9bR,10S,11aS)-9b-fluoro-1,10-dihydroxy-2,9a,11a-trimethyl-7-oxo-1H,2H,3H,3aH,3bH,4H,5H,7H,9aH,9bH,10H,11H,11aH-cyclopenta[a]phenanthren-1-yl]-2-oxoethoxy}phosphonic acid
- SMILES
- [H][C@@]12C[C@H](C)[C@](O)(C(=O)COP(O)(O)=O)[C@@]1(C)C[C@H](O)[C@@]1(F)[C@@]2([H])CCC2=CC(=O)C=C[C@]12C
References
- General References
- Salem II, Najib NM: Pharmacokinetics of betamethasone after single-dose intramuscular administration of betamethasone phosphate and betamethasone acetate to healthy subjects. Clin Ther. 2012 Jan;34(1):214-20. doi: 10.1016/j.clinthera.2011.11.022. Epub 2011 Dec 9. [Article]
- Yasir M, Sonthalia S: Corticosteroid Adverse Effects . [Article]
- Gardill BR, Vogl MR, Lin HY, Hammond GL, Muller YA: Corticosteroid-binding globulin: structure-function implications from species differences. PLoS One. 2012;7(12):e52759. doi: 10.1371/journal.pone.0052759. Epub 2012 Dec 26. [Article]
- Czock D, Keller F, Rasche FM, Haussler U: Pharmacokinetics and pharmacodynamics of systemically administered glucocorticoids. Clin Pharmacokinet. 2005;44(1):61-98. doi: 10.2165/00003088-200544010-00003. [Article]
- FDA Approved Drug Products: Celestone Soluspan (betamethasone sodium phosphate and betamethasone acetate) injectable suspension [Link]
- British Pharmacopoeia: Betamethasone Sodium Phosphate MSDS [Link]
- External Links
- ChemSpider
- 96937
- ChEBI
- 68603
- ChEMBL
- CHEMBL1201207
- ZINC
- ZINC000004097469
- Wikipedia
- Betamethasone_phosphate
Clinical Trials
- Clinical Trials
Clinical Trial & Rare Diseases Add-on Data Package
Explore 4,000+ rare diseases, orphan drugs & condition pairs, clinical trial why stopped data, & more. Preview package Phase Status Purpose Conditions Count Start Date Why Stopped 100+ additional columns Unlock 175K+ rows when you subscribe.View sample data
Pharmacoeconomics
- Manufacturers
- Not Available
- Packagers
- Not Available
- Dosage Forms
- Not Available
- Prices
- Not Available
- Patents
- Not Available
Properties
- State
- Solid
- Experimental Properties
- Not Available
- Predicted Properties
Property Value Source Water Solubility 2.9 mg/mL ALOGPS logP 1.21 ALOGPS logP 1.56 Chemaxon logS -2.2 ALOGPS pKa (Strongest Acidic) 1.18 Chemaxon pKa (Strongest Basic) -3.4 Chemaxon Physiological Charge -2 Chemaxon Hydrogen Acceptor Count 7 Chemaxon Hydrogen Donor Count 4 Chemaxon Polar Surface Area 141.36 Å2 Chemaxon Rotatable Bond Count 4 Chemaxon Refractivity 113.37 m3·mol-1 Chemaxon Polarizability 45.43 Å3 Chemaxon Number of Rings 4 Chemaxon Bioavailability 1 Chemaxon Rule of Five Yes Chemaxon Ghose Filter Yes Chemaxon Veber's Rule No Chemaxon MDDR-like Rule No Chemaxon - Predicted ADMET Features
- Not Available
Spectra
- Mass Spec (NIST)
- Not Available
- Spectra
Spectrum Spectrum Type Splash Key Predicted MS/MS Spectrum - 10V, Positive (Annotated) Predicted LC-MS/MS splash10-0a4r-0005900000-f0092597cf9efcd2f584 Predicted MS/MS Spectrum - 10V, Negative (Annotated) Predicted LC-MS/MS splash10-00di-2000900000-11c9627c0b5cdb9f560c Predicted MS/MS Spectrum - 20V, Positive (Annotated) Predicted LC-MS/MS splash10-0a4i-1419700000-d40877694a6f2e42299a Predicted MS/MS Spectrum - 20V, Negative (Annotated) Predicted LC-MS/MS splash10-004i-9000200000-4a1fb22b468d90d0f72e Predicted MS/MS Spectrum - 40V, Negative (Annotated) Predicted LC-MS/MS splash10-004i-9004000000-5437f957337f3350fb88 Predicted MS/MS Spectrum - 40V, Positive (Annotated) Predicted LC-MS/MS splash10-02ti-0594100000-9dd6165d0859be483548 Predicted 1H NMR Spectrum 1D NMR Not Applicable Predicted 13C NMR Spectrum 1D NMR Not Applicable - Chromatographic Properties
Collision Cross Sections (CCS)
Adduct CCS Value (Å2) Source type Source [M-H]- 195.75475 predictedDeepCCS 1.0 (2019) [M+H]+ 197.65013 predictedDeepCCS 1.0 (2019) [M+Na]+ 203.47047 predictedDeepCCS 1.0 (2019)
Targets
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- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Yes
- Actions
- Agonist
- General Function
- Receptor for glucocorticoids (GC) (PubMed:27120390, PubMed:37478846). Has a dual mode of action: as a transcription factor that binds to glucocorticoid response elements (GRE), both for nuclear and mitochondrial DNA, and as a modulator of other transcription factors (PubMed:28139699). Affects inflammatory responses, cellular proliferation and differentiation in target tissues. Involved in chromatin remodeling (PubMed:9590696). Plays a role in rapid mRNA degradation by binding to the 5' UTR of target mRNAs and interacting with PNRC2 in a ligand-dependent manner which recruits the RNA helicase UPF1 and the mRNA-decapping enzyme DCP1A, leading to RNA decay (PubMed:25775514). Could act as a coactivator for STAT5-dependent transcription upon growth hormone (GH) stimulation and could reveal an essential role of hepatic GR in the control of body growth (By similarity)
- Specific Function
- core promoter sequence-specific DNA binding
- Gene Name
- NR3C1
- Uniprot ID
- P04150
- Uniprot Name
- Glucocorticoid receptor
- Molecular Weight
- 85658.57 Da
References
- Czock D, Keller F, Rasche FM, Haussler U: Pharmacokinetics and pharmacodynamics of systemically administered glucocorticoids. Clin Pharmacokinet. 2005;44(1):61-98. doi: 10.2165/00003088-200544010-00003. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Unknown
- Actions
- Agonist
- General Function
- Plays important roles in the innate immune response as effector of glucocorticoid-mediated responses and regulator of the inflammatory process. Has anti-inflammatory activity (PubMed:8425544). Plays a role in glucocorticoid-mediated down-regulation of the early phase of the inflammatory response (By similarity). Contributes to the adaptive immune response by enhancing signaling cascades that are triggered by T-cell activation, regulates differentiation and proliferation of activated T-cells (PubMed:17008549). Promotes the differentiation of T-cells into Th1 cells and negatively regulates differentiation into Th2 cells (PubMed:17008549). Has no effect on unstimulated T cells (PubMed:17008549). Negatively regulates hormone exocytosis via activation of the formyl peptide receptors and reorganization of the actin cytoskeleton (PubMed:19625660). Has high affinity for Ca(2+) and can bind up to eight Ca(2+) ions (By similarity). Displays Ca(2+)-dependent binding to phospholipid membranes (PubMed:2532504, PubMed:8557678). Plays a role in the formation of phagocytic cups and phagosomes. Plays a role in phagocytosis by mediating the Ca(2+)-dependent interaction between phagosomes and the actin cytoskeleton (By similarity)
- Specific Function
- cadherin binding involved in cell-cell adhesion
- Gene Name
- ANXA1
- Uniprot ID
- P04083
- Uniprot Name
- Annexin A1
- Molecular Weight
- 38713.855 Da
References
- Serres M, Viac J, Comera C, Schmitt D: Expression of annexin I in freshly isolated human epidermal cells and in cultured keratinocytes. Arch Dermatol Res. 1994;286(5):268-72. [Article]
Enzymes
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Unknown
- Actions
- SubstrateInducer
- General Function
- A cytochrome P450 monooxygenase involved in the metabolism of sterols, steroid hormones, retinoids and fatty acids (PubMed:10681376, PubMed:11093772, PubMed:11555828, PubMed:12865317, PubMed:14559847, PubMed:15373842, PubMed:15764715, PubMed:19965576, PubMed:20702771, PubMed:21490593, PubMed:21576599). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase). Catalyzes the hydroxylation of carbon-hydrogen bonds (PubMed:12865317, PubMed:14559847, PubMed:15373842, PubMed:15764715, PubMed:21490593, PubMed:21576599, PubMed:2732228). Exhibits high catalytic activity for the formation of hydroxyestrogens from estrone (E1) and 17beta-estradiol (E2), namely 2-hydroxy E1 and E2, as well as D-ring hydroxylated E1 and E2 at the C-16 position (PubMed:11555828, PubMed:12865317, PubMed:14559847). Plays a role in the metabolism of androgens, particularly in oxidative deactivation of testosterone (PubMed:15373842, PubMed:15764715, PubMed:22773874, PubMed:2732228). Metabolizes testosterone to less biologically active 2beta- and 6beta-hydroxytestosterones (PubMed:15373842, PubMed:15764715, PubMed:2732228). Contributes to the formation of hydroxycholesterols (oxysterols), particularly A-ring hydroxylated cholesterol at the C-4beta position, and side chain hydroxylated cholesterol at the C-25 position, likely contributing to cholesterol degradation and bile acid biosynthesis (PubMed:21576599). Catalyzes bisallylic hydroxylation of polyunsaturated fatty acids (PUFA) (PubMed:9435160). Catalyzes the epoxidation of double bonds of PUFA with a preference for the last double bond (PubMed:19965576). Metabolizes endocannabinoid arachidonoylethanolamide (anandamide) to 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid ethanolamides (EpETrE-EAs), potentially modulating endocannabinoid system signaling (PubMed:20702771). Plays a role in the metabolism of retinoids. Displays high catalytic activity for oxidation of all-trans-retinol to all-trans-retinal, a rate-limiting step for the biosynthesis of all-trans-retinoic acid (atRA) (PubMed:10681376). Further metabolizes atRA toward 4-hydroxyretinoate and may play a role in hepatic atRA clearance (PubMed:11093772). Responsible for oxidative metabolism of xenobiotics. Acts as a 2-exo-monooxygenase for plant lipid 1,8-cineole (eucalyptol) (PubMed:11159812). Metabolizes the majority of the administered drugs. Catalyzes sulfoxidation of the anthelmintics albendazole and fenbendazole (PubMed:10759686). Hydroxylates antimalarial drug quinine (PubMed:8968357). Acts as a 1,4-cineole 2-exo-monooxygenase (PubMed:11695850). Also involved in vitamin D catabolism and calcium homeostasis. Catalyzes the inactivation of the active hormone calcitriol (1-alpha,25-dihydroxyvitamin D(3)) (PubMed:29461981)
- Specific Function
- 1,8-cineole 2-exo-monooxygenase activity
- Gene Name
- CYP3A4
- Uniprot ID
- P08684
- Uniprot Name
- Cytochrome P450 3A4
- Molecular Weight
- 57342.67 Da
References
- Dvorak Z, Pavek P: Regulation of drug-metabolizing cytochrome P450 enzymes by glucocorticoids. Drug Metab Rev. 2010 Nov;42(4):621-35. doi: 10.3109/03602532.2010.484462. [Article]
- FDA Approved Drug Products: Celestone Soluspan (betamethasone sodium phosphate and betamethasone acetate) injectable suspension [Link]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Unknown
- Actions
- Inducer
- General Function
- A cytochrome P450 monooxygenase involved in the metabolism of steroid hormones and vitamins (PubMed:10681376, PubMed:11093772, PubMed:12865317, PubMed:2732228). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate, and reducing the second into a water molecule, with two electrons provided by NADPH via cytochrome P450 reductase (NADPH--hemoprotein reductase). Catalyzes the hydroxylation of carbon-hydrogen bonds (PubMed:10681376, PubMed:11093772, PubMed:12865317, PubMed:2732228). Exhibits high catalytic activity for the formation of catechol estrogens from 17beta-estradiol (E2) and estrone (E1), namely 2-hydroxy E1 and E2 (PubMed:12865317). Catalyzes 6beta-hydroxylation of the steroid hormones testosterone, progesterone, and androstenedione (PubMed:2732228). Catalyzes the oxidative conversion of all-trans-retinol to all-trans-retinal, a rate-limiting step for the biosynthesis of all-trans-retinoic acid (atRA) (PubMed:10681376). Further metabolizes all trans-retinoic acid (atRA) to 4-hydroxyretinoate and may play a role in hepatic atRA clearance (PubMed:11093772). Also involved in the oxidative metabolism of xenobiotics, including calcium channel blocking drug nifedipine and immunosuppressive drug cyclosporine (PubMed:2732228)
- Specific Function
- aromatase activity
- Gene Name
- CYP3A5
- Uniprot ID
- P20815
- Uniprot Name
- Cytochrome P450 3A5
- Molecular Weight
- 57108.065 Da
References
- Dvorak Z, Pavek P: Regulation of drug-metabolizing cytochrome P450 enzymes by glucocorticoids. Drug Metab Rev. 2010 Nov;42(4):621-35. doi: 10.3109/03602532.2010.484462. [Article]
Carriers
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Unknown
- Actions
- Binder
- General Function
- Major transport protein for glucocorticoids and progestins in the blood of almost all vertebrate species
- Specific Function
- serine-type endopeptidase inhibitor activity
- Gene Name
- SERPINA6
- Uniprot ID
- P08185
- Uniprot Name
- Corticosteroid-binding globulin
- Molecular Weight
- 45140.49 Da
References
- Gardill BR, Vogl MR, Lin HY, Hammond GL, Muller YA: Corticosteroid-binding globulin: structure-function implications from species differences. PLoS One. 2012;7(12):e52759. doi: 10.1371/journal.pone.0052759. Epub 2012 Dec 26. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Unknown
- Actions
- Binder
- General Function
- Binds water, Ca(2+), Na(+), K(+), fatty acids, hormones, bilirubin and drugs (Probable). Its main function is the regulation of the colloidal osmotic pressure of blood (Probable). Major zinc transporter in plasma, typically binds about 80% of all plasma zinc (PubMed:19021548). Major calcium and magnesium transporter in plasma, binds approximately 45% of circulating calcium and magnesium in plasma (By similarity). Potentially has more than two calcium-binding sites and might additionally bind calcium in a non-specific manner (By similarity). The shared binding site between zinc and calcium at residue Asp-273 suggests a crosstalk between zinc and calcium transport in the blood (By similarity). The rank order of affinity is zinc > calcium > magnesium (By similarity). Binds to the bacterial siderophore enterobactin and inhibits enterobactin-mediated iron uptake of E.coli from ferric transferrin, and may thereby limit the utilization of iron and growth of enteric bacteria such as E.coli (PubMed:6234017). Does not prevent iron uptake by the bacterial siderophore aerobactin (PubMed:6234017)
- Specific Function
- antioxidant activity
- Gene Name
- ALB
- Uniprot ID
- P02768
- Uniprot Name
- Albumin
- Molecular Weight
- 69365.94 Da
References
- Czock D, Keller F, Rasche FM, Haussler U: Pharmacokinetics and pharmacodynamics of systemically administered glucocorticoids. Clin Pharmacokinet. 2005;44(1):61-98. doi: 10.2165/00003088-200544010-00003. [Article]
Transporters
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Unknown
- Actions
- Inhibitor
- General Function
- Na(+)-independent transporter that mediates the cellular uptake of a broad range of organic anions such as the endogenous bile salts cholate and deoxycholate, either in their unconjugated or conjugated forms (taurocholate and glycocholate), at the plasmam membrane (PubMed:19129463, PubMed:7557095). Responsible for intestinal absorption of bile acids (By similarity). Transports dehydroepiandrosterone 3-sulfate (DHEAS), a major circulating steroid secreted by the adrenal cortex, as well as estrone 3-sulfate and 17beta-estradiol 17-O-(beta-D-glucuronate) (PubMed:11159893, PubMed:12568656, PubMed:19129463, PubMed:23918469, PubMed:25560245, PubMed:9539145). Mediates apical uptake of all-trans-retinol (atROL) across human retinal pigment epithelium, which is essential to maintaining the integrity of the visual cycle and thus vision (PubMed:25560245). Involved in the uptake of clinically used drugs (PubMed:17301733, PubMed:20686826, PubMed:27777271). Capable of thyroid hormone transport (both T3 or 3,3',5'-triiodo-L-thyronine, and T4 or L-tyroxine) (PubMed:19129463, PubMed:20358049). Also transports prostaglandin E2 (PubMed:19129463). Plays roles in blood-brain and -cerebrospinal fluid barrier transport of organic anions and signal mediators, and in hormone uptake by neural cells (By similarity). May also play a role in the reuptake of neuropeptides such as substance P/TAC1 and vasoactive intestinal peptide/VIP released from retinal neurons (PubMed:25132355). May play an important role in plasma and tissue distribution of the structurally diverse chemotherapeutic drugs methotrexate and paclitaxel (PubMed:23243220). Shows a pH-sensitive substrate specificity which may be ascribed to the protonation state of the binding site and leads to a stimulation of substrate transport in an acidic microenvironment (PubMed:19129463). Hydrogencarbonate/HCO3(-) acts as the probable counteranion that exchanges for organic anions (PubMed:19129463). May contribute to regulate the transport of organic compounds in testis across the blood-testis-barrier (Probable)
- Specific Function
- bile acid transmembrane transporter activity
- Gene Name
- SLCO1A2
- Uniprot ID
- P46721
- Uniprot Name
- Solute carrier organic anion transporter family member 1A2
- Molecular Weight
- 74144.105 Da
References
- Bossuyt X, Muller M, Hagenbuch B, Meier PJ: Polyspecific drug and steroid clearance by an organic anion transporter of mammalian liver. J Pharmacol Exp Ther. 1996 Mar;276(3):891-6. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Unknown
- Actions
- SubstrateInducer
- General Function
- Translocates drugs and phospholipids across the membrane (PubMed:2897240, PubMed:35970996, PubMed:8898203, PubMed:9038218). Catalyzes the flop of phospholipids from the cytoplasmic to the exoplasmic leaflet of the apical membrane. Participates mainly to the flop of phosphatidylcholine, phosphatidylethanolamine, beta-D-glucosylceramides and sphingomyelins (PubMed:8898203). Energy-dependent efflux pump responsible for decreased drug accumulation in multidrug-resistant cells (PubMed:2897240, PubMed:35970996, PubMed:9038218)
- Specific Function
- ABC-type xenobiotic transporter activity
- Gene Name
- ABCB1
- Uniprot ID
- P08183
- Uniprot Name
- ATP-dependent translocase ABCB1
- Molecular Weight
- 141477.255 Da
References
- Yates CR, Chang C, Kearbey JD, Yasuda K, Schuetz EG, Miller DD, Dalton JT, Swaan PW: Structural determinants of P-glycoprotein-mediated transport of glucocorticoids. Pharm Res. 2003 Nov;20(11):1794-803. [Article]
- Matoulkova P, Pavek P, Maly J, Vlcek J: Cytochrome P450 enzyme regulation by glucocorticoids and consequences in terms of drug interaction. Expert Opin Drug Metab Toxicol. 2014 Mar;10(3):425-35. doi: 10.1517/17425255.2014.878703. Epub 2014 Jan 23. [Article]
- Kind
- Protein
- Organism
- Humans
- Pharmacological action
- Unknown
- Actions
- Substrate
- General Function
- Functions as an organic anion/dicarboxylate exchanger that couples organic anion uptake indirectly to the sodium gradient (PubMed:14586168, PubMed:15644426, PubMed:15846473, PubMed:16455804, PubMed:31553721). Transports organic anions such as estrone 3-sulfate (E1S) and urate in exchange for dicarboxylates such as glutarate or ketoglutarate (2-oxoglutarate) (PubMed:14586168, PubMed:15846473, PubMed:15864504, PubMed:22108572, PubMed:23832370). Plays an important role in the excretion of endogenous and exogenous organic anions, especially from the kidney and the brain (PubMed:11306713, PubMed:14586168, PubMed:15846473). E1S transport is pH- and chloride-dependent and may also involve E1S/cGMP exchange (PubMed:26377792). Responsible for the transport of prostaglandin E2 (PGE2) and prostaglandin F2(alpha) (PGF2(alpha)) in the basolateral side of the renal tubule (PubMed:11907186). Involved in the transport of neuroactive tryptophan metabolites kynurenate and xanthurenate (PubMed:22108572, PubMed:23832370). Functions as a biopterin transporters involved in the uptake and the secretion of coenzymes tetrahydrobiopterin (BH4), dihydrobiopterin (BH2) and sepiapterin to urine, thereby determining baseline levels of blood biopterins (PubMed:28534121). May be involved in the basolateral transport of steviol, a metabolite of the popular sugar substitute stevioside (PubMed:15644426). May participate in the detoxification/ renal excretion of drugs and xenobiotics, such as the histamine H(2)-receptor antagonists fexofenadine and cimetidine, the antibiotic benzylpenicillin (PCG), the anionic herbicide 2,4-dichloro-phenoxyacetate (2,4-D), the diagnostic agent p-aminohippurate (PAH), the antiviral acyclovir (ACV), and the mycotoxin ochratoxin (OTA), by transporting these exogenous organic anions across the cell membrane in exchange for dicarboxylates such as 2-oxoglutarate (PubMed:11669456, PubMed:15846473, PubMed:16455804). Contributes to the renal uptake of potent uremic toxins (indoxyl sulfate (IS), indole acetate (IA), hippurate/N-benzoylglycine (HA) and 3-carboxy-4-methyl-5-propyl-2-furanpropionate (CMPF)), pravastatin, PCG, E1S and dehydroepiandrosterone sulfate (DHEAS), and is partly involved in the renal uptake of temocaprilat (an angiotensin-converting enzyme (ACE) inhibitor) (PubMed:14675047). May contribute to the release of cortisol in the adrenals (PubMed:15864504). Involved in one of the detoxification systems on the choroid plexus (CP), removes substrates such as E1S or taurocholate (TC), PCG, 2,4-D and PAH, from the cerebrospinal fluid (CSF) to the blood for eventual excretion in urine and bile (By similarity). Also contributes to the uptake of several other organic compounds such as the prostanoids prostaglandin E(2) and prostaglandin F(2-alpha), L-carnitine, and the therapeutic drugs allopurinol, 6-mercaptopurine (6-MP) and 5-fluorouracil (5-FU) (By similarity). Mediates the transport of PAH, PCG, and the statins pravastatin and pitavastatin, from the cerebrum into the blood circulation across the blood-brain barrier (BBB). In summary, plays a role in the efflux of drugs and xenobiotics, helping reduce their undesired toxicological effects on the body (By similarity)
- Specific Function
- organic anion transmembrane transporter activity
- Gene Name
- SLC22A8
- Uniprot ID
- Q8TCC7
- Uniprot Name
- Organic anion transporter 3
- Molecular Weight
- 59855.585 Da
References
- VanWert AL, Gionfriddo MR, Sweet DH: Organic anion transporters: discovery, pharmacology, regulation and roles in pathophysiology. Biopharm Drug Dispos. 2010 Jan;31(1):1-71. doi: 10.1002/bdd.693. [Article]
Drug created at September 03, 2018 17:11 / Updated at October 09, 2024 11:18