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Allocryptopine
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Product Name Allocryptopine
Price:
CAS No.: 24240-04-8
Catalog No.: CFN98254
Molecular Formula: C21H23NO5
Molecular Weight: 369.4 g/mol
Purity: >=98%
Type of Compound: Alkaloids
Physical Desc.: Powder
Source: The herbs of Macleaya cordata
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
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Biological Activity
Description: Allocryptopine has certain effects on anti-injury for hepatocyte, ameliorating liver function, and prohibiting hepatic fibrosis; it increases mRNA levels of cytochromes P450 1A in human hepatocytes and HepG2 cells independently of AhR. Allocryptopine induces a relaxing effect on the ileum by inhibiting phosphodiesterase enzyme, and thus elevating cellular cAMP and its contractile effect on the urinary bladder by affecting alpha-adrenergic receptors in this tissue, it can block human ether-a-go-go related gene (hERG) potassium channels expressed in HEK293 cells.
Targets: cAMP | P450 (e.g. CYP17) | Potassium channel
In vitro:
Acta Pharmacol Sin. 2013 Jun;34(6):847-58.
Allocryptopine and benzyltetrahydropalmatine block hERG potassium channels expressed in HEK293 cells.[Pubmed: 23524574]
Allocryptopine (ALL) is an alkaloid extracted from Corydalis decumbens (Thunb) Pers. Papaveraceae, whereas benzyltetrahydropalmatine (BTHP) is a derivative of tetrahydropalmatine extracted from Corydalis ambigua (Pall) Cham et Schlecht. The aim of this study was to investigate the effects of ALL and BTHP on the human ether-a-go-go related gene (hERG) current expressed in HEK293 cells.
METHODS AND RESULTS:
Cultured HEK293 cells were transiently transfected with hERG channel cDNA plasmid pcDNA3.1 using Lipofectamine. The whole-cell current IHERG was evoked and recorded using Axon MultiClamp 700B amplifier. The drugs were applied via supserfusion. Both ALL and BTHP reversibly suppressed the amplitude and density of IHERG in concentration- and voltage-dependent manners (the respective IC50 value was 49.65 and 22.38 μmol/L). BTHP (30 μmol/L) caused a significant negative shift of the steady-state inactivation curve of IHERG, while ALL (30 μmol/L) did not affect the steady-state inactivation of IHERG. Furthermore, BTHP, but not ALL, shortened the time constants of fast inactivation and slow time constants of deactivation of IHERG. But both the drugs markedly lengthened the time constants for recovery of IHERG from inactivation. Using action potential waveform pulses, it was found that both the drugs at 30 μmol/L significantly suppressed the current densities in the late phase of action potential, but did not significantly affect the current densities in the early phase of action potential.
CONCLUSIONS:
Both ALL and BTHP derived from Chinese herbs potently block hERG current.
In vivo:
Gen Pharmacol. 1997 Oct;29(4):621-3.
Effects of allocryptopine, an alkaloid isolated from Glaucium arabicum on rat isolated ileum and urinary bladder.[Pubmed: 9352312]
1. The alkaloid, Allocryptopine, was isolated from the chloroform extract of Glaucium arabicum.
METHODS AND RESULTS:
2. The effect of Allocryptopine on urinary bladder and ileal smooth muscles was investigated in this study. 3. Allocryptopine, in concentrations from 1 x 10(-5) to 3 x 10(-3) M caused a concentration-dependent contraction of rat isolated urinary bladder and a concentration-dependent relaxation of rat ileal smooth muscles. 4. Theophylline (10(-5) M) shifted to the left the Allocryptopine concentration-effect curve on ileum and increased the maximum inhibitory effect of Allocryptopine. 5. Methylene blue (10(-3) M) had no significant effect on the concentration-effect curve of Allocryptopine of the ileum. 6. Phentolamine (10(-6) M) shifted to the right the Allocryptopine concentration-effect curve of urinary bladder.
CONCLUSIONS:
7. These observations suggest that Allocryptopine induces a relaxing effect on the ileum by inhibiting phosphodiesterase enzyme, and thus elevating cellular cAMP and its contractile effect on the urinary bladder by affecting alpha-adrenergic receptors in this tissue.
Allocryptopine Description
Source: The herbs of Macleaya cordata
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

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After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals

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Calculate Dilution Ratios(Only for Reference)
1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.7071 mL 13.5355 mL 27.0709 mL 54.1419 mL 67.6773 mL
5 mM 0.5414 mL 2.7071 mL 5.4142 mL 10.8284 mL 13.5355 mL
10 mM 0.2707 mL 1.3535 mL 2.7071 mL 5.4142 mL 6.7677 mL
50 mM 0.0541 mL 0.2707 mL 0.5414 mL 1.0828 mL 1.3535 mL
100 mM 0.0271 mL 0.1354 mL 0.2707 mL 0.5414 mL 0.6768 mL
* Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
Protocol
Cell Research:
Toxicol Lett. 2011 Jun 10;203(2):135-41.
Protopine and allocryptopine increase mRNA levels of cytochromes P450 1A in human hepatocytes and HepG2 cells independently of AhR.[Pubmed: 21419197]
The isoquinoline alkaloids protopine and Allocryptopine are present in phytopreparations from medicinal plants, such as Fumaria officinalis.
METHODS AND RESULTS:
Since nothing is known about effects of the alkaloids on the expression of xenobiotic-metabolizing enzymes, we examined whether protopine or Allocryptopine affect the expression of cytochromes P450 (CYPs) 1A1 and 1A2 in primary cultures of human hepatocytes and human hepatoma HepG2 cells. In HepG2 cells, protopine and Allocryptopine significantly increased CYP1A1 mRNA levels after 24h exposure at concentrations from 25 and 10 μM, respectively, as shown by real-time PCR. Both protopine and Allocryptopine also dose-dependently increased CYP1A1 and CYP1A2 mRNA levels in human hepatocytes. However, the effects of the tested alkaloids on both cell models were much lower than the effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), a prototypical CYP1A inducer. Using gene reporter assays performed in transiently transfected HepG2 cells, we demonstrated that the induction of CYP1A1 expression by either protopine or Allocryptopine was associated with mild or negligible activation of the aryl hydrocarbon receptor. In contrast to TCDD, CYP1A mRNA levels induced by protopine or Allocryptopine in both HepG2 cells and human hepatocytes did not result in elevated CYP1A protein or activity levels as shown by western blotting and EROD assays, respectively.
CONCLUSIONS:
We conclude that the use of products containing protopine and/or Allocryptopine may be considered safe in terms of possible induction of CYP1A enzymes.
Animal Research:
Chinese Traditional & Herbal Drugs, 2011, 42(6):1158- 63.
Effect of allocryptopine on antagonizing hepatic fibrosis.[Reference: WebLink]
To investigate the prophylactic and therapeutic effects of Allocryptopine on experimental hepatic fibrosis.
METHODS AND RESULTS:
Experimental hepatic fibrosis models were induced by injection of tetrachloride in combination with the drinking of 5% alcohol to rats and Schistosoma japomicum infection to mice. The effects of Allocryptopine anti-hepatic fibrosis were evaluated by comparing the liver and spleen indexes, tissue biochemical indices (ALT, AST), lipid peroxidation indices (GSH-Px, MDA, SOD), serum fibrosis indices (HA, PCIII LN), the expression level of Hyp and collagen type I, III (CoI, CoIII), and the liver pathology before and after Allocryptopine intervention. In CCl 4-induced liver fibrosis model rats, compared with model group, the liver index and the expression level of CoI were obviously decreased in Allocryptopine prophylactic groups (P<0.05, 0.01), high-dose prophylactic Allocryptopine could significantly reduce the expression level of CoIII (P<0.01), middle-dose prophylactic Allocryptopine could obviously reduce the spleen index, the content of AST (P<0.05); in Allocryptopine therapeutic group, the liver index, the content of ALT, and the expression level of CoIII were significantly decreased (P<0.05, 0.01). In S. japomicum-induced liver fibrosis model mice, prophylactic Allocryptopine could reduce the content of ALT and the expression level of Hyp (P<0.05); the liver index, the contents of PCIII, HA, and ALT were significantly decreased in high-dose Allocryptopine therapeutic group (P<0.05, 0.01), the liver index, the contents of PCIII, and HA were obviously decreased in middle-dose Allocryptopine therapeutic group (P<0.05); In addition, the hepatic histopathology was also improved in varying degrees after Allocryptopine intervention.
CONCLUSIONS:
Allocryptopine has certain effects on anti-injury for hepatocyte, ameliorating liver function, and prohibiting hepatic fibrosis.
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