CN105343071A - Application of ciclopirox olamine in preparation of medicine for treating or preventing epilepsy - Google Patents
Application of ciclopirox olamine in preparation of medicine for treating or preventing epilepsy Download PDFInfo
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- CN105343071A CN105343071A CN201410414266.0A CN201410414266A CN105343071A CN 105343071 A CN105343071 A CN 105343071A CN 201410414266 A CN201410414266 A CN 201410414266A CN 105343071 A CN105343071 A CN 105343071A
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Abstract
The invention belongs to the field of medical technology and specifically relates to an application of ciclopirox olamine in the preparation of a medicine for treating or preventing epilepsy. A compound is screened through a pentylenetetrazol (PTZ) induced zebra fish epilepsy model. Ciclopirox olamine can significantly reduce rapid movement distance (V is greater than 20 mm/sec) of epilepsy zebra fish but doesn't affect total movement distance. It explains that at atoxic concentration, ciclopirox olamine shows good efficacy in curing or preventing epilepsy.
Description
Technical field
The present invention relates to medical art, the specifically application of ciclopiroxolamin in preparation treatment or prevention AED.
Background technology
Epilepsy (epilepsy) is chronic recurrent of short duration brain function imbalance syndrome, causes repeatedly epilepsy outbreak for feature with brain neuron paradoxical discharge.Epilepsy can show the dysfunctions such as motion, sensation, consciousness, spirit, behavior and autonomic nerve.Epilepsy is one of nervous system common disease, the whole world about 5,000 ten thousand patient, sickness rate about 1%.Epilepsy can occur in any age bracket, has nothing to do with sex, socioeconomic status.Epilepsy mortality rate is about 20%, causes very large burden to family, society.At present, through existing Antiepileptic Drugs, still have patient's drug resistance of about 30% can not control [1].The mortality rate of the out of contior epilepsy of medicine and intractable epilepsy is higher, can reach 50%, although adopt operative treatment for the out of contior epilepsy of medicine at present more, but the patient being applicable to operation only accounts for sub-fraction.Therefore, finding effective and safe epilepsy medicine is one of biomedical important target [2,3].
Rodents epilepsy model comprises maximal electroshock model, kindling model, and the induction such as pentylenetetrazole (PTZ), the acid of extra large core, penicillin epilepsy model, these models play an important role for AED research and development and Mechanism Study.But, present stage epilepsy be still a thorny medical problem, its mechanism it be unclear that.Brachydanio rerio is a kind of vertebrates, with human gene's homology up to 85%, its signal transduction pathway and the mankind are substantially approximate, biological structure is highly similar to mammal with physiological function, has volume little (available microwell plate analysis), growth phase short, external fertilization, transparent (can directly with the naked eye with dissection microscopic examination), single laying comparatively high [4].Zebra fish model had both had the advantages such as experiment in vitro is quick, efficient, cheap, dosage is little, there is again the advantages such as strong, the comparable degree of mammal experiment predictability is high, the multiple organs of observable, in recent years be used widely in compound drug effect, toxicity assessment [5,6].In the early stage dopamine system of Zebrafish Embryo, five hydroxytryptamine system and γ-aminobutyric acid (being called for short GABA) phylogeny, and there is corresponding function.This is that the application of Brachydanio rerio in nervous system disease provides possibility [7].PTZ is gamma-aminobutyric acid receptor antagonist, and GABA is inhibitory neurotransmitter important in brain, can induce epilepsy after suppressing GABA.According to this abduction mechanism, PTZ induced rat epilepsy model can screen the antiepileptic [8,9] of various mechanism of action, and the standard of the classification reference Racine formulation in 1972 of epilepsy can be divided into: one-level: transfixion is attended by mouth/facial movement; Secondary: nod and the shake of dog in the water sample; Three grades: forelimb clonic spasm; Level Four: stand and bilateral forelimb clonic spasm; Pyatyi: continue to stand and fall; Six grades: bolt and scream [10].BarabanandBerghmans applies same mechanism, establishes PTZ and induces Brachydanio rerio epilepsy model, can simulate mammal Status Epilepticus, and Brachydanio rerio shows as motion increase, fast " vortex behavior " and grand mal [11,12].The antiepileptic that multidigit researcher utilizes PTZ to induce Brachydanio rerio epilepsy model to demonstrate multiple mechanism of action all can show certain drug effect in this model, comprises sodium ion blocker: carbamazepine, 5,5-Diphenyl-2,4-imidazolidinedione are received; Calcium channel blocker: gabapentin; Suppress vesicle release medicine: levetiracetam; GABA receptor stimulating agent: diazepam; Change the medicine of GABA re uptake Sum decomposition: sodium valproate etc. [9,13].Within 2012, foreign study person utilizes Brachydanio rerio epilepsy model from the compound of 2000 known activity, filters out the compound that 46 have potential antiepileptic action.These compounds comprise steroid, antiinflammatory, antioxidation, vasodilation, Insecticides (tech) & Herbicides (tech), and related drugs enters follow-up development [14].Therefore, Brachydanio rerio epilepsy model can high flux high frequency zone antiepileptic, and this is significant to the research and development of AED.
In sum, utilize Brachydanio rerio epilepsy model high flux screening antiepileptic, seek new compound and effectively treat or prevent epilepsy to become research and development focus, the antiepileptic that exploitation has independent intellectual property right is extremely urgent.
Ciclopiroxolamin (English name: CICLOPIROXOLAMINE; Chinese: ciclopiroxolamin, Ciclopirox; Chemical name: 6-cyclohexyl-1-hydroxy-4-methyl pyridine-2 (1H)-one 2-ethylaminoethanol; Molecular formula: C12H17NO2C2H7NO, molecular weight: 268.35) have stronger antibacterial and bactericidal action to dermatophytosis, yeast, actinomycetes, mycete and other fungus, also has certain antagonism to various Gram-positive and gram negative bacteria and mycoplasma, chlamydia, trichomonacide etc.The chemical structural formula of ciclopiroxolamin is as follows:
。
So far there is not yet the relevant report about ciclopiroxolamin antiepileptic activity and epilepsy target active.
Summary of the invention
The object of the present invention is to provide the novelty teabag of ciclopiroxolamin in preparation treatment or prevention AED.
The object of the invention is to be achieved through the following technical solutions: existing compound ciclopiroxolamin, structural formula is as follows:
The present invention utilizes PTZ to induce Brachydanio rerio epilepsy model to carry out ciclopiroxolamin treatment or prevention epilepsy pharmacodynamic experiment.PTZ is γ-aminobutyric acid (being called for short GABA) receptor antagonist, after PTZ induction, and immediately-early genes
c-fosraise, Brachydanio rerio shows motion increase, fast " vortex behavior " and grand mal immediately, and this is similar to mankind's epilepsy symptom.Utilize ViewPoint behavior analysis instrument record Brachydanio rerio movement locus, utilize this software analysis rapid movement distance, screening antiepileptic.The method is simple, efficiently, and high flux.The invention provides ciclopiroxolamin induces in Brachydanio rerio epilepsy model at PTZ, epilepsy Brachydanio rerio rapid movement distance (being equivalent to mammiferous Status Epilepticus) can be reduced significantly, on total move distance without impact, illustrate under non-toxic concn, ciclopiroxolamin shows good epilepsy drug effect, and this shows that the generation of epilepsy can be treated or prevent to ciclopiroxolamin.
Ciclopiroxolamin of the present invention is cheap, safety is high, raw material sources are extensive, is aided with pharmaceutically acceptable adjuvant, adopts conventional formulation technologies namely to can be made into various oral, injection, has good DEVELOPMENT PROSPECT.
Accompanying drawing explanation
Fig. 1 PTZ induces Brachydanio rerio epilepsy model trajectory diagram.Redness represents the movement locus of V>20mm/sec, and green represents the movement locus of 4mm/sec<V<20mm/sec, and black represents the movement locus of V<4mm/sec.Phenytoin Sodium is under 300 μMs of concentration, and can significantly reduce rapid movement distance, epilepsy therapy efficiency reaches 78%(
p<0.01); The Compound C mp3 of screening is ciclopiroxolamin, and in single dense element screening under 100 μMs of concentration, can significantly reduce rapid movement distance, epilepsy therapy efficiency reaches 75%(
p<0.01).
Fig. 2 ciclopiroxolamin epilepsy drug effect block diagram.Blank group rapid movement distance be 100mm, group of solvents and model group compared with blank group, the significantly increase of rapid movement distance (
p<0.01,
p<0.01), show that PTZ induces the success of Brachydanio rerio epilepsy model, and show as the increase of rapid movement distance.Model group is compared with group of solvents, and rapid movement distance zero difference, shows solvent DMSO1.0% to Brachydanio rerio behavior without impact.Phenytoin Sodium is under 300 μMs of concentration, and can significantly reduce rapid movement distance, epilepsy therapy efficiency reaches 78%(
p<0.01); In the dense element screening of ciclopiroxolamin list under 100 μMs of concentration, can significantly reduce rapid movement distance, epilepsy therapy efficiency reaches 75%(
p<0.01).
The move distance suppression ratio total to normal Brachydanio rerio under 10,30,100 μMs of concentration of Fig. 3 ciclopiroxolamin is respectively 25%, 13%, 35%(p<0.01), under anatomic microscope, observe the state of fish simultaneously, 100 μMs of basic disappearances of group touching reaction, 30 μMs, 10 μMs group touching reactions are normal, result shows that it is when 100 μMs of concentration, the toxic reaction of Brachydanio rerio; During 30-10 μM of concentration, non-toxic reaction.
Fig. 4 induces in epilepsy model at PTZ, ciclopiroxolamin epilepsy suppression ratio under 10,30,100 μMs of concentration is respectively 40%(p<0.01), 86%(p<0.01), 98%(p<0.01), in conjunction with affecting result to total move distance, show that the epilepsy drug effect of ciclopiroxolamin when 100 μMs of concentration is for toxic manifestations, the avirulence performance when 10-30 μM of concentration, show obvious epilepsy drug effect, and dose-effect relationship is clear and definite.
Fig. 5 ciclopiroxolamin induces Brachydanio rerio epilepsy model trajectory diagram 100 μMs of concentration to PTZ.Redness represents the movement locus of V>20mm/sec, and green represents the movement locus of 4mm/sec<V<20mm/sec, and black represents the movement locus of V<4mm/sec.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further elaborated, but protection scope of the present invention is not limited to this.
embodiment onethe drug effect of quantitative observation list concentration ciclopiroxolamin in Brachydanio rerio epilepsy model
Brachydanio rerio:
The Brachydanio rerio that the present embodiment uses is wild-type zebrafish, and raising and the strict requirement with reference to U.S.'s management of laboratory animal and use committee (IACUC) of the standard of use are carried out.
To breed fish water (Fishwater):
Collocation method: 1L reverse osmosis water (reverseosmosis (RO) water) adds 0.3g sea salt (InstantOceansalts).
Dimethyl sulfoxide (DMSO, analytical pure):
Buy in Aladdin (article No. #1095515, lot number #30573).1%DMSO solution (negative control) configures: during use, be configured to water of breeding fish the working solution that concentration is 1.0%, now with the current.
PTZ (pentylenetetrazole, derivant):
Purchased from American sigma company, lot number 069K1245.During use, become the concentration needed for experiment by 0.1%DMSO solution allocation, in this experiment, the working concentration of PTZ is 10mM.
Phenytoin sodium (positive control drug):
Purchased from Beijing lark prestige Science and Technology Ltd., lot number GF01-FD.During use, become the concentration needed for experiment by 1.0%DMSO solution allocation, the working concentration that in this experiment, 5,5-Diphenyl-2,4-imidazolidinedione is received is 300 μMs.
Ciclopiroxolamin (CICLOPIROXOLAMINE):
Buy in sigma company, lot number 67814.During use, 100 μMs are become to test by 1.0%DMSO solution allocation.
experimental technique:
(1) experiment grouping and juvenile fish process: get the well-developed Brachydanio rerio juvenile fish of 96 tail, Larval Development phase is after fertilization 6dpf (day-postfertilization, dpf), be divided at random 12 groups (model group, group of solvents, positive drug group, medicine groups), often organizing embryo's quantity is 8.By in juvenile fish random assortment to 96 porocyte culture plate (Greiner, Germany) during operation, every hole 1 tail juvenile fish, every hole raising water 200 μ L.
(2) medical preconditioning: rapidly pre-configured medicinal liquid is added in hole corresponding to 96 porocyte culture plates with pipettor (range 100 ~ 1000 μ L, Eppendorf), every hole 180 μ L.Before adding medicinal liquid, shifted out as possible by the raising water of hatching embryo in 96 orifice plates with pipettor (range 10 ~ 1000 μ L, Eppendorf), this operation needs to complete in advance at short notice, to prevent embryo dry.Experimental situation temperature controls at about 28.5 DEG C, relative humidity 40 ~ 70%.Then with masking foil, 96 orifice plates are wrapped, carry out experiment labelling, be positioned over rapidly in Brachydanio rerio incubator and continue to cultivate 1h (incubator temperature controls at 28.5 ± 0.5 DEG C).
(3) PTZ induction: after medical preconditioning 1h, add PTZ20 μ L, make final concentration be 10mM.After stablizing 10 minutes, utilize the motion conditions of Brachydanio rerio in ViewPoint behavior analysis instrument record 60 minutes.
(4) carry out quantitative analysis to the rapid movement (V>20mm/sec) distance (D) of Brachydanio rerio, calculate the epilepsy therapeutic efficiency of medicine, formula is as follows:
(5) simultaneously, after track record end, under anatomic microscope, observe the state of fish, comprising: changes in heart rate, whether turn on one's side, whether have touching reaction etc.
(6) statistical procedures result with
represent, compare employing variance analysis between many groups, compare between two groups and adopt Dunnett ' sT-inspection to carry out statistical procedures, p<0.05 is that diversity is remarkable.
Experimental result in table 1, Fig. 1, Fig. 2.Can once single concentration screening 8 compounds in 96 orifice plates, often organize 8 tail fishes, blank group rapid movement distance be 100mm, group of solvents and model group compared with blank group, the significantly increase of rapid movement distance (
p<0.01,
p<0.01), show that PTZ induces the success of Brachydanio rerio epilepsy model, and show as the increase of rapid movement distance.Model group is compared with group of solvents, and rapid movement distance zero difference, shows solvent DMSO1.0% to Brachydanio rerio behavior without impact.Phenytoin Sodium is a sodium ion channel blocker, is a traditional antiepileptic.In this experiment, phenytoin Sodium is under 300 μMs of concentration, and can significantly reduce rapid movement distance, epilepsy therapy efficiency reaches 78%(
p<0.01); The Compound C mp3 of screening is ciclopiroxolamin, and in single dense element screening under 100 μMs of concentration, can significantly reduce rapid movement distance, epilepsy therapy efficiency reaches 75%(
p<0.01).Simultaneously after track record end, the state of fish is observed under anatomic microscope, ciclopiroxolamin administration group, after touching, escape reaction weakens, have no other abnormal phenotype, next step is tested many concentration and again verifies epilepsy drug effect, and investigates and investigate whether toxic manifestations to the impact of total move distance.
Table 1 ciclopiroxolamin induces the therapeutic efficiency (mean ± sem) in Brachydanio rerio epilepsy model at PTZ
Compared with blank group, #,
p<0.05, ##,
p<0.01;
Compared with group of solvents, *,
p<0.05, * *,
p<0.01.
embodiment twothe drug effect of many concentration checking ciclopiroxolamin in Brachydanio rerio epilepsy model and safety
Experiment material and experimental technique are with embodiment one.By the move distance that software analysis is total, the impact that the ciclopiroxolamin investigating 10,30,100 μMs of concentration moves on normal Brachydanio rerio.And induce in epilepsy model at PTZ, the ciclopiroxolamin investigating 10,30,100 μMs of concentration, on the impact of Brachydanio rerio rapid movement distance, judges that it is with or without epilepsy drug effect.
The results are shown in Figure 3,4,5.The move distance suppression ratio total to normal Brachydanio rerio under 10,30,100 μMs of concentration of ciclopiroxolamin is respectively 25%, 13%, 35%(p<0.01), under anatomic microscope, observe the state of fish simultaneously, 100 μMs of basic disappearances of group touching reaction, 30 μMs, 10 μMs group touching reactions are normal, result shows that it is when 100 μMs of concentration, the toxic reaction of Brachydanio rerio; During 30-10 μM of concentration, non-toxic reaction.Induce in epilepsy model at PTZ, ciclopiroxolamin epilepsy suppression ratio under 10,30,100 μMs of concentration is respectively 40%(p<0.01), 86%(p<0.01), 98%(p<0.01), in conjunction with affecting result to total move distance, show that the epilepsy drug effect of ciclopiroxolamin when 100 μMs of concentration is for toxic manifestations, the avirulence performance when 10-30 μM of concentration, show obvious epilepsy drug effect, and dose-effect relationship is clear and definite.
List of references
[[1]]Remy,S.andBeck,H.Molecularandcellularmechanismsofpharmacoresistanceinepilepsy.Brain.2006;129,18-35.
[2]BialerM1,WhiteHS.Keyfactorsinthediscoveryanddevelopmentofnewantiepilepticdrugs.NatRevDrugDiscov.2010;9(1):68-82.
[3]BrodieMJ1,CovanisA,etal.Antiepilepticdrugtherapy:doesmechanismofactionmatter?EpilepsyBehav.2011Aug;21(4):331-41.
[4]ZonLI,PetersonRT.Invivodrugdiscoveryinthezebrafish.DrugDiscovery2005;4:35–44.
[5]McGrathP,LiCQ.Zebrafish:apredictivemodelforassessingdrug-inducedtoxicity.DrugDiscoveryToday.2008;13:394-401.
[6]Barros,T.P.,Alderton,W.K.,Reynolds,H.M.,Roach,A.G.,&Berghmans,S.Zebrafish:Anemergingtechnologyforinvivopharmacologicalassessmenttoidentifypotentialsafetyliabilitiesinearlydrugdiscovery.BritishJournalofPharmacology,2008;154,1400–1413.
[7]LockwoodB,BjerkeS,KobayashiK,GuoS.Acuteeffectsofalcoholonlarvalzebrafish:ageneticsystemforlarge-scalescreening.PharmacolBiochemBehav2004;77(3):647–54.
[8]MandhaneSN,AavulaK,RajamannarT.Timedpentylenetetrazolinfusiontest:a
comparativeanalysiswiths.c.PTZandMESmodelsofanticonvulsantscreeninginmice.Seizure2007;16(7):636–44.
[9]SillsGJ,ButlerE,ThompsonGG,BrodieMJ.Pharmacodynamicinteractionstudieswithtopiramateinthepentylenetetrazolandmaximalelectroshockseizuremodels.Seizure2004;13(5):287–95.
[10]RAcINERJ．Modificationofseizureactivitybyelectricalstimulation：II．Motorseizure[J]．EIectroencephaIogrCIiⅡNeurophysiol,1972;32(30):255-310．
[11]BarabanSC,TaylorMR,etal.Pentylenetetrazoleinducedchangesinzebrafishbehavior,neuralactivityandc-fosexpression.Neuroscience.2005;131(3):759-68.
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[14]SarahBaxendale,CeliaJ.Holdsworth,etal.Identificationofcompoundswithanti-convulsantpropertiesinazebrafishmodelofepilepticseizures.DiseaseModels&Mechanisms.2012;5,773-784.
Claims (3)
1. the application of ciclopiroxolamin in preparation treatment or prevention AED.
2. application according to claim 1, is characterized in that, described medicine is oral administered dosage form, injecting medicine-feeding form, mucosa delivery dosage form or transdermal dosage form.
3. application according to claim 1, is characterized in that, described medicine is tablet, capsule, granule, oral liquid, injection, patch or gel form.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020228305A1 (en) * | 2019-05-14 | 2020-11-19 | 南通大学 | Construction method for mutant gabrg2 transgenic zebrafish epilepsy model and applications |
| EP4193989A1 (en) | 2021-12-09 | 2023-06-14 | Atlas Molecular Pharma, S.L. | A formulation for an effective oral administration of ciclopirox with no adversal gasterointestinal toxicity |
-
2014
- 2014-08-21 CN CN201410414266.0A patent/CN105343071B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| MENDONÇA P. R. F.，ET AL.: ""Animal study results suggest that an antifungal drug works against neuronal loss in epilepsy"", 《EPILEPSY & BEHAVIOR》 * |
| 赵学军 等: ""抗真菌新药—环吡酮胺"", 《临床医学》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020228305A1 (en) * | 2019-05-14 | 2020-11-19 | 南通大学 | Construction method for mutant gabrg2 transgenic zebrafish epilepsy model and applications |
| EP4193989A1 (en) | 2021-12-09 | 2023-06-14 | Atlas Molecular Pharma, S.L. | A formulation for an effective oral administration of ciclopirox with no adversal gasterointestinal toxicity |
| WO2023105031A1 (en) | 2021-12-09 | 2023-06-15 | Atlas Molecular Pharma, S.L. | A formulation for an effective oral administration of ciclopirox with no adversal gasterointestinal toxicity |
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