Trigonelline, an alkaloid with potential antidiabetic activity, is present in considerable amounts in coffee.
Tetrahydroberberine is an isoquinoline alkaloid isolated from corydalis tuber; has micromolar affinity for dopamine D(2) (pK(i) = 6.08) and 5-HT(1A) (pK(i) = 5.38) receptors but moderate to no affinity for other relevant serotonin receptors (5-HT(1B), 5-HT(1D), 5-HT(3), and 5-HT(4); pK(i) < 5.00).
Leonurine is an alkaloid isolated from Herba leonuri, with anti-oxidative and anti-inflammatory.
Cefsulodin sodium salt hydrate is a third generation β lactam antibiotic and member of the cephems subgroub of antibiotics. Target: AntibacterialThe compound displays a mechanism of action like many β lactam antibiotics through inhibition of cell wall synthesis by competitively inhibiting penicillin binding protein (PBP) crosslinking of peptidoglycan resulting in inhibition of the final transpeptidation step. Through the inability for Cefsulodin sodium salt hydrate to inhibit cefsulodin-resistant mutants of Pseudomonas aeruginosa PAO4089 growth displayed that Cefsulodin sodium salt hydrate may compete with PBP3 in addtion to PBP1A and PBP1B.
Terazosin is a selective alpha1-antagonist used for treatment of symptoms of benign prostatic hyperplasia (BPH).Target: Alpha-1 Adrenergic ReceptorTerazosin is selective for alpha 1A-adrenoceptors which appear to dominate in the human prostate; the therapeutic relevance of this selectivity remains to be assessed in clinical studies [1]. Administration of terazosin 1 mg orally for 28 d. Terazosin initially shifted the dose-response curve of phenylephrine to the right, with a significant increase in ED50 for phenylephrine from a control value of 102 to 759 ng/min on day 1 of terazosin (P < 0.001). The mean Kd of terazosin was estimated as 11 +/- 15 nM in the first few days of treatment. This study demonstrates that pharmacological tolerance to the alpha 1-adrenoceptor blocking action of terazosin occurs in man and may be responsible for loss in efficacy with chronic therapy [2].
Brevianamide F , also known as cyclo-(L-Trp-L-Pro), belongs to a class of naturally occurring 2,5-diketopiperazines.Brevianamide F possess interesting breast cancer resistance protein inhibitory activity.[1] brevianamide F once used as aromatic substrate. [2]
Benzoylmesaconine is the most abundant component of Wutou decoction, which is widely used in China because of its therapeutic effect on rheumatoid arthritis.
Protopine, an isoquinoline alkaloid contained in plants in northeast Asia.IC50 Value:Target:In vitro: Protopine was found to reduce nitric oxide (NO), cyclooxygenase-2 (COX-2), and prostaglandin E(2) (PGE(2)) production by LPS-stimulated Raw 264.7 cells, without a cytotoxic effect. Pre-treatment of Raw 264.7 cells with protopine reduced the production of pro-inflammatory cytokines [2]. Protopine is a novel microtubule stabilizer with anticancer activity in HRPC cells through apoptotic pathway by modulating Cdk1 activity and Bcl-2 family of proteins [3]. In HepG2 cells, protopine significantly increased CYP1A1 mRNA levels after 24h exposure at concentrations from 25 and 10 μM. Protopine also dose-dependently increased CYP1A1 and CYP1A2 mRNA levels in human hepatocytes [4].In vivo: Assays were performed on MDA-MB-231 human breast cancer cells, and the result showed that protopine exhibited anti-adhesive and anti-invasion effects in MDA-MB-231 cells; after treatment with protopine for 90 min, the expression of EGFR, ICAM-1, αv-integrin, β1-integrin and β5-integrin were remarkably reduced [1].
L-(+)-Abrine, a lethal albumin found in Abrus precatorius seeds, is an acute toxic alkaloid and chemical marker for abrin.
Norfloxacin hydrochloride is a broad-spectrum antibiotic that is active against both Gram-positive and Gram-negative bacteria, which functions by inhibiting DNA gyrase.Target: DNA gyrase; AntibacterialNorfloxacin is a synthetic chemotherapeutic antibacterial agent occasionally used to treat common as well as complicated urinary tract infections. Norfloxacin is a broad-spectrum antibiotic that is active against both Gram-positive and Gram-negative bacteria. It functions by inhibiting DNA gyrase, a type II topoisomerase, and topoisomerase IV, enzymes necessary to separate bacterial DNA, thereby inhibiting cell division.There are currently three approved uses in the adult population (one of which is restricted) and the other ineffective due to bacterial resistance. Chibroxin (ophthalmic) is approved for use in children older than one year of age.Norfloxacin is associated with a number of rare serious adverse reactions as well as spontaneous tendon ruptures and irreversible peripheral neuropathy. Tendon problems may manifest long after therapy had been completed and in severe cases may result in lifelong disabilities. Hepatoxicity resulting in fatalities has also been reported with the use of norfloxacin.
Homoharringtonine (Omacetaxine mepesuccinate;HHT) is a cytotoxic alkaloid with antitumor properties which acts by inhibiting translation elongation.
Benzoylhypaconine is a natural product.
Hypaconitine, an active and highly toxic constituent derived from Aconitum species, is widely used to treat rheumatism. IC50 value:Target:In vitro: The present study investigated the metabolism of hypaconitine in vitro using male human liver microsomes. The primary contributors toward HA metabolism were CYP3A4 and 3A5, with secondary contributions by CYP2C19, 2D6 and CYP2E1 [1].In vivo:
Berberine has shown to be effective in inhibiting cell proliferation and promoting apoptosis in various cancerous cells; MAPK and Wnt/β-catenin pathways affected by Berberine.IC50 value:Target: Anticancer agentThe plant-based alkaloid berberine has potential therapeutic applications for breast cancer, although a better understanding of the genes and cellular pathways regulated by this compound is needed to define the mechanism of its action in cancer treatment. In this review, the molecular targets of berberine in various cancers, particularly breast cancer, are discussed. Berberine was shown to be effective in inhibiting cell proliferation and promoting apoptosis in various cancerous cells. Some signaling pathways affected by berberine, including the MAP (mitogen-activated protein) kinase and Wnt/β-catenin pathways, are critical for reducing cellular migration and sensitivity to various growth factors [1]. Treatment with BBR(Berberine) in rats on the atherogenic diet reduced plasma total cholesterol and nonHDL cholesterol levels by 29%-33% and 31%-41%, respectively, with no significant differences being observed among the three doses [2]. Berberine induced both apoptotic and autophagic death of HepG2 cells, which was associated with a significant activation of AMPK and an increased expression of the inactive form of acetyl-CoA carboxylase (ACC) [3]. Berberine did not show major effects on viability of HEK-293 embryonic kidney and HCT116 colon carcinoma cells and was not toxic in concentrations up to 20 μM. Berberine inhibited β-catenin transcriptional activity and attenuated anchorage-independent growth. As a result of berberine treatment, cellular levels of active β-catenin were reduced concomitant with an increase in the expression of E-cadherin [4].
Cordycepin, which is a nucleoside derivative isolated from Cordyceps, inhibits IL-1β-induced MMP-1 and MMP-3 expression in rheumatoid arthritis synovial fibroblasts (RASFs) in a dose-dependent manner.
Benazepril, an angiotensin converting enzyme inhibitor, which is a medication used to treat high blood pressure.Target: angiotensin converting enzyme (ACE)Benazepril is a medication used to treat high blood pressure (hypertension), congestive heart failure, and chronic renal failure. Upon cleavage of its ester group by the liver, benazepril is converted into its active form benazeprilat, a non-sulfhydryl angiotensin-converting enzyme (ACE) inhibitor [1].Animals were randomly divided into 4 groups: sham STNx group (control), STNx group, morning benazepril group (MB) and evening benazepril group (EB).Benazepril was intragastrically administered at a dose of 10 mg/kg/day at 07:00 and 19:00 in the MB group and EB group respectively for 12 weeks. All the animals were synchronized to the light:dark cycle of 12:12 for 12 weeks. Systolic blood pressure (SBP), 24-h urinary protein excretion and renal function were measured at 11 weeks. Blood samples and kidneys were collected every 4 h throughout a day to detect the expression pattern of renin activity (RA), angiotensin II (AngII) and aldosterone (Ald) by radioimmunoassay (RIA) and the mRNA expression profile of clock genes (bmal1, dbp and per2) by real-time PCR at 12 weeks. Our results showed that no significant differences were noted in the SBP, 24-h urine protein excretion and renal function between the MB and EB groups. There were no significant differences in average Ald and RA content of a day between the MB group and EB group. The expression peak of bmal1 mRNA was phase-delayed by 4 to 8 h, and the diurnal variation of per2 and dbp mRNA diminished in the MB and EB groups compared with the control and STNx groups. It was concluded when the similar SBP reduction, RAAS inhibition and clock gene profile were achieved with optimal dose of benazepril, morning versus evening dosing of benazepril has the same renoprotection effects [2].Clinical indications: Congestive heart failure; End stage renal disease; HypertensionFDA Approved Date: Toxicity: headaches; cough; Anaphylaxis; angioedema; hyperkalemia
Isatin (Indoline-2,3-dione) is a potent inhibitor of monoamine oxidase (MAO) with an IC50 of 3 μM. Also binds to central benzodiazepine receptors (IC50 against clonazepam, 123 μM)[1]. Also acts as an antagonist of both atrial natriuretic peptide stimulated and nitric oxide-stimulated guanylate cyclase activity[2]. Shows effect on the serotonergic system[3].
Berbamine dihydrochloride is an inhibitor of NF-κB activity with remarkable anti-myeloma efficacy.
Acipimox is a niacin derivative used as a hypolipidemic agent.Target: Acipimox is a niacin derivative used as a hypolipidemic agent. It is used in low doses and may have less marked adverse effects, although it is unclear whether the recommended dose is as effective as are standard doses of nicotinic acid. Acipimox inhibits the production of triglycerides by the liver and the secretion of VLDL, which leads indirectly to a modest reduction in LDL and increase in HDL. Long-term administration is associated with reduced mortality, but unwanted effects limit its clinical use. Adverse effects include flushing (associated with Prostaglandin D2), palpitations, and GI disturbances. Flushing can be reduced by taking aspirin 20-30 min before taking Acipimox. High doses can cause disorders of liver function, impair glucose tolerance and precipitate gout. From Wikipedia.
Coptisine chloride is an alkaloid from Chinese goldthread, and acts as an efficient uncompetitive IDO inhibitor with a Ki value of 5.8 μM and an IC50 value of 6.3 μM.
Tiagabine(NO328) is a selective gamma-aminobutyric acid (GABA) reuptake inhibitor.Target: GABA reuptake inhibitorTiagabine had an early onset of effect, as shown by significant reduction from baseline in mean HAM-A total score compared with placebo at week 1 (observed cases, p < .05). Tiagabine was generally well tolerated and not associated with changes in sexual functioning or depressive status. Symptoms of a discontinuation syndrome during taper were not observed. Tiagabine may be a useful treatment option for adult patients diagnosed with GAD [1]. Tiagabine was generally well tolerated; the most common adverse events were nausea, dizziness and headaches [2]. Tiagabine (0.1 microM), an antiepileptic drug that specifically inhibits the GAT-1 GABA transporter inhibited GABA uptake 50% in temporal cortex and 60-68% in white structures [3].
Stachydrine hydrochloride is the major active constituent of Herba Leonuri, which is a potential therapy for cardiovascular diseases[2]. Stachydrine can inhibit the NF-κB signal pathway. Anti-hypertrophic activities[1].
Corynoxine is an enantiomer of Corynoxine B; induces autophagy in different neuronal cell lines, including N2a and SHSY-5Y cells.IC50 value:Tareget: Autophagy inducerIn vivo, Cory promotes the formation of autophagosomes in the fat bodies of Drosophila. By inducing autophagy, Cory promotes the clearance of wild-type and A53T α-syn in inducible PC12 cells. Interestingly, different from its enantiomer Cory B, Cory induces autophagy through the Akt/mTOR pathway as evidenced by the reduction in the levels of phospho-Akt, phospho-mTOR and phospho-p70 S6 Kinase [1]. Corynoxine significantly decreased locomotor activity after oral administration to mice [2].
N-Nornuciferine is an aporphine alkaloid in lotus leaf that significantly inhibits CYP2D6 with IC50 and Ki of 3.76 and 2.34 μM, respectively.
Indole-3-carbinol suppresses NF-κB activity and also is an Aryl hydrocarbon receptor (AhR) agonist.
Creatinine(NSC13123) is a break-down product of creatine phosphate in muscle, and is usually produced at a fairly constant rate by the body.Target: OthersCreatinine is a breakdown product of creatine phosphate in muscle, and is usually produced at a fairly constant rate by the body (depending on muscle mass). Creatine is synthesized primarily in the liver from the methylation of glycocyamine (guanidino acetate, synthesized in the kidney from the amino acids arginine and glycine) by S-adenosyl methionine. It is then transported through blood to the other organs, muscle, and brain, where, through phosphorylation, it becomes the high-energy compound phosphocreatine. During the reaction, creatine and phosphocreatine are catalyzed by creatine kinase, and a spontaneous conversion to creatinine may occur [1]. Creatinine levels in blood and urine may be used to calculate the creatinine clearance (CrCl), which reflects the glomerular filtration rate (GFR), an important clinical index of renal function [2].
Epiberberine chloride, a natural alkaloid, is a BACE1 inhibitor, which also exhibits inhibition activity on CYP2D6 and aldose reductase, alpha-adrenoceptors, acetylcholinesterase (AChE), butyrylcholinesterase, and b-site amyloid precursor protein cleaving enzyme 1.
Vinblastine sulfate is a cytotoxic alkaloid used against various cancer types. Vinblastine sulfate inhibits the formation of microtubule and suppresses nAChR with an IC50 of 8.9 μM.
Betaine hydrochloride is a natural compound found in many foods and also an active methyl-donor which can maintain normal DNA methylation patterns.
Corynoxine B is an oxindole alkaloid isolated from Uncaria rhynchophylla (Miq.) Jacks (Gouteng in Chinese); a Beclin-1-dependent autophagy inducer. IC50 value:Target: Autophagy inducerin vitro: Corynoxine B, a natural autophagy inducer, restores the deficient cytosolic translocation of HMGB1 and autophagy in cells overexpressing SNCA, which may be attributed to its ability to block SNCA-HMGB1 interaction [1].in vivo: Corynoxine B exhibited prolongation of the thiopental-induced hypnosis on oral administration in mice [2].