WO2021010812A1 - Combinación sinérgica de s-ketorolaco y pregabalina en una composición farmacéutica para el tratamiento del dolor neuropático. - Google Patents
Combinación sinérgica de s-ketorolaco y pregabalina en una composición farmacéutica para el tratamiento del dolor neuropático. Download PDFInfo
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- WO2021010812A1 WO2021010812A1 PCT/MX2020/050011 MX2020050011W WO2021010812A1 WO 2021010812 A1 WO2021010812 A1 WO 2021010812A1 MX 2020050011 W MX2020050011 W MX 2020050011W WO 2021010812 A1 WO2021010812 A1 WO 2021010812A1
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- ketorolac
- pregabalin
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- allodynic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/195—Carboxylic acids, e.g. valproic acid having an amino group
- A61K31/197—Carboxylic acids, e.g. valproic acid having an amino group the amino and the carboxyl groups being attached to the same acyclic carbon chain, e.g. gamma-aminobutyric acid [GABA], beta-alanine, epsilon-aminocaproic acid or pantothenic acid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/407—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with other heterocyclic ring systems, e.g. ketorolac, physostigmine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
Definitions
- Synergistic combination of S-Ketorolac and pregabalin in a pharmaceutical composition for the treatment of neuropathic pain
- the present invention is related to the technical field of the pharmaceutical industry, since it aims to provide a pharmaceutical composition that comprises the synergistic pharmaceutical combination of a non-steroidal anti-inflammatory agent NSAID, consisting of the active principle ketorolac or its racemic forms or its salts pharmaceutically acceptable agents and an analogue of the neurotransmitter gammaminobutyric acid (GABA) from the group of neuromodulators, such as the active principle pregabalin or a pharmaceutically acceptable salt thereof, in addition to pharmaceutically acceptable vehicles, excipients or adjuvants, formulated in a pharmaceutical form for oral administration, either in tablets, capsules or pellets.
- GABA neurotransmitter gammaminobutyric acid
- pain is a multidimensional, psychophysical and sociocultural problem that transcends the patient, the family and the whole of society.
- neuropathic pain which affects millions of people around the world, and is characterized by referred abnormal sensations of perception of pain such as allodynia (painful response to a harmless stimulus) and hyperalgesia (exaggerated painful response to a slightly noxious stimulus). Due to its diverse etiology, and the type of discomfort that this type of pain generates, most analgesic compounds generate an irregular effective response to neuropathic pain.
- Gabapentin (Gbp) or Pregabalin (Pgb) or their pharmaceutically acceptable salts are currently used in the clinical management of neuropathic pain; however, when pain relief is incomplete, experts have recommended adding a second analgesic or adjuvant agent to comply with treatment.
- Combination therapy can increase analgesic efficacy, broaden the analgesic spectrum, decrease the dose of the analgesic (s) or compounds, and decrease side or adverse effects.
- CCI chronic sciatic nerve constriction in rats.
- the determination and evaluation of the antinociceptive effect (anti-allodynic and anti-hyperalgesic) of the individual and combined administration of Pgb and S-Ketorolac was carried out, to determine their individual effects and the type of Synergistic interaction presented by these drugs in a model of neuropathic pain induced by chronic constriction of the sciatic nerve in rats, using allodynia and hyperalgesia tests, as well as determining possible adverse effects that said drug association could present, such as constipation, effect on motor coordination and modification of lethal doses and therapeutic indices and safety margins in the rat model of neuropathic pain due to chronic constriction.
- the Bennett and Xie experimental model is one of the most widely used models for the study of neuropathic pain and its treatment, because it shows many of the pathophysiological properties of neuropathic pain in humans. It is based on the unilateral ligation of the sciatic nerve, which produces a chronic constriction injury, (CCI for its acronym in English "chronic constriction injury”). This model has been shown to be sensitive to a number of drugs used clinically for the treatment of neuropathic pain and a high degree of similarity with other models of neuropathic pain in terms of the degree of allodynia and hyperalgesia that it produces in the face of mechanical or thermal stimuli. as widely used parameters in preclinical pharmacology and in the evaluation of neuropathic pain.
- non-steroidal anti-inflammatory drugs which are one of the most prescribed groups of drugs worldwide.
- NSAIDs are useful in rheumatic pain, both in inflammatory and degenerative diseases, they are also frequently used in non-rheumatic diseases such as migraine headaches, dental pain and in general in any painful process due to their analgesic effect.
- these active ingredients are useful as antipyretics. It should be noted that in recent years a colon cancer prevention effect has been demonstrated with these NSAIDs. The use of these in the general population is very widespread, even as self-medication, since they are often obtained without a prescription or medical supervision, with the potential risk of side effects.
- Non-steroidal anti-inflammatory drugs include the following active ingredients: acetylsalicylic acid, salsalate, diflunisal, phosphosal, Usine acetylate, phenylbutazone, indomethacin, tolmetin, sulindac, acetamycin, diclofenac, aceclofenac, nabumetone, ibuprofen, ketolofen, naprophene, and naprophene. , piroxicam, tenoxicam, meloxicam, mefenamic acid, meclofenamate, celecoxib, etohcoxib, and lumiracoxib.
- ketorolac has analgesic, antipyretic and anti-inflammatory properties, acting in the inhibition of prostaglandins.
- Ketorolac has the chemical name: 5-benzoll-2,3-dlhydro-1 / - / - plrrollzlna-1-carboxylic acid; and is represented by the following molecule (I):
- GABA gammaminobutyric acid
- Neuromodulators are endogenous substances, products of metabolism, which, without being accumulated and released by nerve terminals, act presynaptically, modulating the synthesis and / or release of a neurotransmitter. Endogenous neuromodulatory molecules are mostly known as neuropeptides, since by their structure they are peptides, polypeptides or proteins. There are also exogenous molecules or neuromodulatory drugs, such as gabapentin, pregabalin, and carbamazepine, indicated as adjuvants in the treatment of neuropathic pain.
- Neuromodulators can be administered by different routes, especially orally. It is important to know the advantages and limitations of each of them. The wrong choice of route usually implies greater iatrogenicity, higher costs, and lower therapeutic efficacy.
- Pregabalin is structurally an analog of gamma-aminobutyric acid GABA, but lacks effects on its receptors and related structures. It acts by blocking calcium channels, reducing its entry into presynaptic nerve endings and decreasing the release of excitatory neurotransmitters (Glutamate, Noradrenaline and Substance P), resulting in a blockage of neuronal excitatory signal dispersion.
- Pregabalin has a chemical name: (3S) -3- (Aminomethyl) -5-methylhexanoic acid and is represented by the following molecule (II):
- pregabalin has not been fully elucidated, studies involving structurally related drugs suggest that the presynaptic binding of pregabalin to voltage-gated calcium channels is key to the anticonvulsant and antinociceptive effect observed in animal models.
- pregabalin By binding presynaptically to the alpha2delta subunit of voltage-gated calcium channels in the CNS, pregabalin modulates the release of various excitatory neurotransmitters.
- pregabalin prevents the alpha2delta subunit from being trafficked from the dorsal root ganglia to the spinal dorsal horn which contributes to enhancing the release of the excitatory neurotransmitter.
- pregabalin is a structural derivative of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA), it does not bind directly to the GABA or benzodiazepine receptor 8; that is, pregabalin binds to an auxiliary subunit (a2d protein) of voltage-gated calcium channels in the central nervous system (CNS) that are found at the presynaptic terminals of brain and spinal cord neurons, potentially displacing [3Hj-gabapentin.
- GABA inhibitory neurotransmitter gamma-aminobutyric acid
- the present invention comprises the combination of ketorolac, its active isomers or its pharmaceutical salts and pregabalin for the treatment of neropathic, inflammatory, convulsive, anxiety or psychotic pain.
- Clinical and experimental data support the potential of combining two or more drugs. These combinations have shown analgesic efficacy and a lower profile of adverse effects than any of the drugs administered separately. Combining drugs that act at different levels with different pharmacological mechanisms of action can provide potential benefits such as:
- opioids reduce selectivity to pain-independent stimuli and adjuvant drugs decrease selectivity to pain-evoked stimuli.
- Empowerment It results from the use of an analgesic with another non-analgesic drug and whose combination results in a greater effect than that observed when only the analgesic is used.
- US patents 6,720,001 describe a stabilized pharmaceutical oil-in-water emulsion for the delivery of a polyfunctional drug, wherein the emulsion has a mean particle diameter of less than about 5 pm and consists essentially of: a) a therapeutic amount of ketorolac, pregabalin, or other drugs and combinations thereof, b) an aqueous phase, c) an oil phase with a mixture of structured triglycerides and a polarity modifier to facilitate the incorporation of the drug, d) an emulsifier for parenteral administration, even said composition can be formulated in different pharmaceutical forms;
- US patent 9,283,192 describes a pressure-coated tablet formulation, followed by a prolonged release of an active agent comprising: a) a core comprising the active agent, selected from ketorolac, pregabalin, among other drugs and combinations thereof, together with a wax and optionally one or more fillers, b) a delayed release layer comprising a wax and a low-substi
- the present invention is characterized in that it provides a composition that comprises the combination of ketorolac or its enantiomer S-ketorolac base or its pharmaceutically acceptable salt with pregabalin or its pharmaceutically acceptable salt in the form of an oral solid, not reported in the state of the art.
- the potential advantage of using such combination therapy is that analgesic effects can be maximized, while the incidence of adverse effects is minimized.
- an analgesic synergism is offered, which allows a reduction in the required doses and a decrease in adverse effects.
- ketorolac or its enantiomer S-ketorolac base or its pharmaceutically acceptable salt with pregabalin or its pharmaceutically acceptable salt in the form of an oral solid, which generates a synergistic potentiation interaction, that is that is to say, increasing its therapeutic potency, onset of action and reduction of adverse events.
- Said combination improves the therapy offering benefits such as: greater effectiveness and greater therapeutic power, at the time of its application in order to achieve localized therapeutic effects for the treatment of pain control of neuropathic, anti-inflammatory and postsurgical conditions; in addition to significantly reducing the probability of collateral effects.
- Figure 9 Time courses of the combination (S-Ket 0.0316 mg / Kg + Pgb 0.10 mg / Kg) that showed the highest degree of potentiation interaction (105%) of anti-allodynic effects compared to the expected theoretical sum of anti-allodynic effects of individually administered drugs.
- the CTs of the individual drugs and that formed the combination are also shown. The mean and standard error are plotted.
- FIG. 1 Time courses (TC) of the combination that showed the highest antihyperalgesic effect and that proved to be the most effective combination among the analyzed combinations in terms of anti-hyperalgesic effects.
- the individual CTs of the antihyperalgesic effects of the drugs in the doses that formed the combination are also shown.
- the mean and standard error are plotted.
- the present invention refers to the novel pharmaceutical combination to be formulated and administered by means of an oral solid pharmaceutical composition, containing at least one non-steroidal anti-inflammatory agent such as ketorolac or its S-ketorolac isomer in its base form or its pharmaceutically acceptable salts.
- at least one non-steroidal anti-inflammatory agent such as ketorolac or its S-ketorolac isomer in its base form or its pharmaceutically acceptable salts.
- ketorolac or its S-ketorolac isomer in its base form or its pharmaceutically acceptable salts.
- GABA neurotransmitter gammaminobutyric acid
- said active pharmaceutical ingredients provide synergistic effects at the time of their application with the object to achieve localized therapeutic effects for the treatment of neuropathic pain control or in post-surgical pain as well as in analgesic and anti-inflammatory therapy.
- the synergistic formulation of S-ketorolac with pregabalin, for oral administration aims to provide a fast and effective analgesic and anti-inflammatory effect.
- S-ketorolac with pregabalin is an effective therapeutic resource in patients with neuropathic pain, as well as in patients with post-surgical operations, with a minimal or non-existent adverse event profile, and an important analgesic and anti-inflammatory action.
- the present invention has been verified with preclinical model test studies that the novel combination of S-ketorolac and pregabalin formulated in solid for oral administration, manifests a strong synergistic therapeutic effect in the treatment of neuropathic pain; This is why the main objective of the present invention is the development of a pharmaceutical composition composed of the combination of a non-steroidal anti-inflammatory agent such as S-ketorolac and the analogue of the neurotransmitter gammaminobutyric acid (GABA) from the group of neuromodulators such as pregabalin or its pharmaceutically acceptable salts. Said combination is formulated with pharmaceutically acceptable excipients, which is indicated for the control and treatment of neuropathic pain as well as in post-surgical patients.
- GABA neurotransmitter gammaminobutyric acid
- An alternative at present to increase the efficacy of an analgesic treatment and significantly reduce side effects is through the combined administration of two or more active agents, as the synergistic pharmaceutical combination as it is intended to protect in the present invention.
- the present invention aims to offer a new therapeutic option for the control and treatment of neuropathic pain in patients with recurrent conditions and postsurgical pain, which can reduce symptoms and improve the quality of life of patients.
- This model has been shown to be sensitive to a number of drugs used clinically for the treatment of neuropathic pain and a high degree of similarity with other models of neuropathic pain in terms of the degree of allodynia and hyperalgesia that it produces in the face of mechanical or thermal stimuli. as widely used parameters in preclinical pharmacology and in the evaluation of neuropathic pain.
- mice Male Wistar rats were used, with a body weight of 120-140 g at the beginning of the experimental phase, which weighed 160-180 g when administering the drugs.
- the animals were kept in polycarbonate boxes under controlled light and temperature conditions, with 12-hour light / dark cycles and ad intake of water and food. libitum. All experiments were carried out during the light phase.
- the use and handling of animals was carried out following the international guidelines established in The Committee for Research and Ethical Issues of the International Association for the Study of Pain and in the Ethical Guidelines for the Investigation of Experimental Pain of the International Association for the Study from pain.
- the sciatic nerve of the right hind limb was dissected through an incision, dissecting the biceps femoris muscle to locate the part most proximal to the sciatic nerve trifurcation and apply four loose ligatures with thread of silk.
- Von Frey test mechanical hyperalgesia
- the rats were placed on a metal mesh in a transparent acrylic box where they remained for at least 10 minutes before the test for adaptation.
- the response to a tactile stimulus applied to the plantar surface of the right hind limb was determined with the 15-gram Von Frey filament.
- the controls Sham and without surgery
- presented a certain nociceptive response so the response is considered to be hyperalgesia.
- the Acetone Test (cold allodynia) was performed and evaluated as follows: At the end of the Von Frey test, the rats were left at rest on the metal mesh and after a period of 5-10 minutes, 0.1 was applied mL of acetone on the plantar surface of the hind limbs with a syringe with a flexible plastic tip, below the metal mesh. Subsequently, the time in seconds in which the animal remained with the limb removed from the surface for 60 seconds after exposure to acetone was recorded with a stopwatch. The response time of the right hind limb was measured, three repetitions were performed with an interval of at least 2 minutes each.
- neuropathic pain sciatic nerve ligation
- a control group called SHAM was established that only had the dissection without actually performing surgery or ligation of the sciatic nerve. To show that neuropathic pain is only present if the sciatic nerve is properly tied.
- CCI-VEH A control group called CCI-VEH was established, which does have surgery or ligation of the sciatic nerve, and the vehicle (CMC) was administered, but no pharmacological treatment. Subsequently, the useful dose ranges of the drugs in laboratory animals were determined to analyze and determine the useful preclinical doses.
- CDR dose-response curve
- the rats in the CCI group showed pronounced allodynia in response to acetone stimulation on the surgical limb. This test indicated a significant increase in time spent licking or lifting the limb on acetone challenge in CCI rats compared to SHAM group.
- the rats that were not linked showed a small nociceptive response when stimulated with the 15-gram filament, the response is very close to zero, but they did show a degree of response, which which shows that nociception is clearly present with the 15-gram Von Frey filament, and that after ICC surgery the rats present hyperalgesia.
- the rats showed a hyperalgesia response, and the non-anti-hyperalgesic effect of the vehicle is evidenced.
- Figure 1 show the CT of the anti-allodynic effects generated by each of the pregabalin doses, evaluated in rats with neuropathic pain. The percentage of anti-allodynic response generated by the different doses is evaluated.
- the X-axis shows the time in minutes with determinations at time 0, 30, 60, 90, 120 and 180 minutes after the oral administration of each dose.
- the Y axis shows that the animals had complete allodynia at the beginning, and after the administration of the pregabalin doses, gradual relief of the allodynia was presented, in a dose-dependent manner, that is, anti-allodynic effects.
- the mean and standard error of 6 animals are graphed at each experimental point. An anti-allodynic effect generated by pregabalin is evident with increasing dose. It is also observed that while the doses of pregabalin 0.0316 mg / Kg practically do not generate anti-allodynic effects, the doses of 31.6 mg / Kg produce a great anti-allodynic effect.
- Figure 3 shows the CDR of the anti-allodynic effects developed by oral pregabalin in rats with neuropathic pain. As the time course was 180 minutes or 3 hours, a value of 300 area units (ua) was established as the maximum possible ABC control in the experimental model. The mean of 6 animals ⁇ standard error is plotted. The CDR shows a clear dose-dependent relationship.
- Figure 4 shows the CT of the anti-allodynic effects generated by each of the doses of S-ketorolac, evaluated in the animals with neuropathic pain.
- the X-axis shows the time in minutes with determinations at time 0, 30, 60, 90, 120 and 180 minutes after oral administration of each dose.
- the Y axis shows the degree of anti-allodynic effect in animals that initially had complete allodynia.
- Figure 5 shows the global anti-allodynic effects, through the 180 minutes in the form of bars corresponding to the AUC of the anti-allodynic effects shown in the CT of Figure 4. A dose-dependent relationship is generated.
- Figure 6 shows the CDR of the anti-allodynic effects developed by oral S-ketorolac in rats with neuropathic pain.
- the maximum possible effect as maximum area under the control curve (AUC) has a value of 300 ua.
- the mean of 6 animals ⁇ standard error is plotted.
- In the CDR a dose-dependent relationship is observed.
- S-ketorolac doses from 0.0316 mg / Kg to 1.0 mg / Kg, a dose-dependent effect was observed; the Maximum efficacy was reached with the dose of 1.0 mg / Kg and even when 3 higher doses were evaluated, no greater anti-allodynic efficacy was produced.
- Table 1 presents the most effective doses of each compound, the maximum efficacy generated, and the relative efficacy, where it can be concluded that S-ketorolac achieves only 46% of the anti-allodynic efficacy shown by oral pregabalin. Therefore, in producing anti-allodynic effects, pregabalin was more effective than S-ketorolac administered orally in animals with neuropathic pain generated by ICC.
- pregabalin produced the best anti-allodynic efficacy
- Table 2 shows all the doses used in combination of each of the drugs, the expected effects as the theoretical sum (AUC) of the individual effects, the anti-allodynic effects of all the combinations as AUC obtained experimentally, as well as the types of interaction or synergism detected in each case.
- the 24 different proportions of combination of S-ketorolac + pregabalin to generate anti-allodynic effects made it possible to detect that predominantly additive effects are present, but also some supraadditive (potentiation).
- Figure 8 shows the CT of the combination that showed the highest anti-allodynic effect and that at the respective CDRs was shown to be the most effective combination in terms of anti-allodynic antinociceptive effects.
- the individual CTs of the drugs that made up that combination are also shown.
- the mean and standard error are plotted.
- a good anti-allodynic effect of 84.4 ⁇ 3.6% is reached quickly (30 minutes after administration) , and the effect is maintained for a further 3.5 h until the end of the evaluation period (93.6 ⁇ 1.4%) at 3 h after administration.
- pregabalin increases its effect over time. But when S-ketorolac is added to pregabalin, the result is that the new Emax is now larger and occurs at a shorter time (shorter latency time) after administration: 0.5 h. That is, with the optimal combination of efficacy: 1) latency to Emax improves (decreases which is favorable), 2) Emax improves (increases, leading to greater relief), and 3) anti-allodynic coverage. increases (which is very useful, since at the end of the evaluation at least one of the components already has very little anti-allodynic effect, while the combination continues to generate and show a very adequate and high anti-allodynic effect).
- Figure 9 shows the CT of the combination that showed the highest degree of potentiation (105%) of anti-allodynic antinociceptive effects compared to the expected theoretical sum.
- figure 10 shows the 2 CDRs obtained for anti-hyperalgesic effects, administering both S-ketorolac and pregabalin.
- pregabalin the maximum efficacy was generated by the dose of 31 .6 mg / Kg, reaching an antihyperalgesic effect of 220.4 ⁇ 12.3 ua, while S-ketorolac generated its maximum efficacy with a dose of 3.16 mg / Kg, producing a anti-hyperalgesic effect of 112.5 ⁇ 3.5 ua, but this efficacy was lower than that produced by pregabalin.
- Table 3 shows the most effective anti-hyperalgesic doses of each compound, the maximum efficacy generated, and the relative efficacy, where it can be concluded that S-ketorolac reaches only 51% of the anti-hyperalgesic efficacy shown by the pregabalin. Therefore, to produce anti-hyperalgesic effects, pregabalin was more effective than S-ketorolac, both administered orally in animals with neuropathic pain generated by ICC.
- Table 4 shows the combined potentiation doses for each of the drugs, as well as the expected effects as the theoretical sum (AUC) of the individual effects, and the anti-hyperalgesic effects of all the combinations as AUC obtained experimentally, in addition to the type of interaction or synergism detected in each case.
- the 24 different proportions of combination of S-ketorolac with pregabalin to generate anti-hyperalgesic effects allowed the detection of 3 potentiation combinations.
- pregabalin increases its effect over time. But when S-ketorolac is added to pregabalin, the result is that the new Emax is now larger and occurs at a shorter time (lower latency time) after administration.
- Figure 12 shows the CT of the combination that showed supraadditive effect (23%) of anti-hyperalgesic antinociceptive effects compared to the expected theoretical sum.
- the individual CTs of the drugs that make up that combination are also shown.
- the mean and standard error are plotted.
- the figure shows that S-ketorolac 1.0 mg / Kg generates little anti-hyperalgesic effect, while pregabalin 0.316 mg / Kg administered individually practically does not generate anti-hyperalgesic effects throughout the evaluation period.
- the combination of these drugs in the same doses generated an Emax of 58.3 ⁇ 4.0% at 30 minutes after administration, an effect that was maintained for an additional 3.5 hours. Therefore, the combination of these drugs in the same doses generated supra-additive anti-hyperalgesic effects of 23% over the theoretical sum of individual effects such as ABC.
- the CTs shown compare the anti-hyperalgesic effects of the maximum efficacy combination (S-ketorolac 1.0 + pregabalin 10) with anti-hyperalgesic antinociceptive effects produced by the highest and most effective doses of the drugs individually.
- the anti-hyperalgesic effects obtained with the combination are better and greater than the effects generated with the most effective dose of S-ketorolac (3.16 mg / Kg), and the effects of the combination are similar to those produced by the highest dose and effective of pregabalin (31.6 mg / Kg).
- the present invention that comprises the pharmaceutical combination of S-ketorolac with pregabalin be formulated and developed into a pharmaceutical composition to be administered orally. , with a lower dose, greater therapeutic potency and reduced risk of adverse events, for the treatment of neuropathic pain.
- compositions are described in a non-limiting manner by way of example below:
- Example 1 Compositions for oral administration.
- the present invention can be represented in other specific forms without departing from its spirit or essential characteristics, such as parenteral, muscular, intravenous injections; tablets, hard or soft gelatin capsules, micropellets, caplets, powder to reconstitute, and can present different modified release systems such as: controlled release, sustained release, pulsatile release.
- the modalities described will be considered in all respects, only as illustrative and not restrictive.
- the S-Ketorolac agent can be comprised in a concentration of approximately 0.001 to approximately 5,000 mg, preferably a concentration of 0.01 to 2500 mg being used in the formulation and can vary according to the necessary adjustments according to the results in the preclinical study.
- the active agent pregabalin can be comprised in a concentration of approximately 0.001 to approximately 10,000 mg, and can vary according to the necessary adjustments according to the results in the preclinical study.
- Oral pregabalin and S-ketorolac had dose-dependent anti-allodynic effects.
- the optimal combination of anti-allodynic efficacy was S-ketorolac 0.316 mg / Kg + pregabalin 10 mg / kg (that is, in a dose ratio of 1 to 50, more preferably 1 to 31.6).
- Latency to Emax improves, reaching it in less time.
- Oral pregabalin and S-ketorolac had dose-dependent anti-hyperalgesic effects.
- Pregabalin was more effective than S-ketorolac (Pregabalin produced 49% more anti-hyperalgesia than S-ketorolac).
- the optimal combination of anti-hyperalgesic efficacy was S-ketorolac 1 .0 mg / Kg + pregabalin 10 mg / kg (i.e. a dose ratio of 1 to 10).
- the most effective optimal combination (S-ketorolac 1.0 + pregabalin 10) produces a level of relief from hyperalgesia similar to that produced with the highest and most effective dose of pregabalin (31 .6 mg / Kg), even when the combination is using 3 times less doses of pregabalin in the presence of a small amount of S-ketorolac (1 .0 mg / Kg).
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EP20840902.9A EP4000607A4 (en) | 2019-07-16 | 2020-06-11 | Synergistic combination of s-ketorolac and pregabalin in a pharmaceutical composition for the treatment of neuropathic pain |
US17/626,888 US20220273596A1 (en) | 2019-07-16 | 2020-06-11 | Synergistic combination of s-ketorolac and pregabalin in a pharmaceutical composition for the treatment of neuropathic pain |
CA3144224A CA3144224A1 (en) | 2019-07-16 | 2020-06-11 | S-ketorolac and pregabalin synergic pharmaceutical composition for the treatment of neuropathic pain |
CONC2022/0001574A CO2022001574A2 (es) | 2019-07-16 | 2022-02-16 | Combinación sinérgica de s-ketorolaco y pregabalina en una composición farmacéutica para el tratamiento del dolor neuropático. |
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CO (1) | CO2022001574A2 (es) |
MX (1) | MX388067B (es) |
WO (1) | WO2021010812A1 (es) |
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2019
- 2019-07-16 MX MX2019008467A patent/MX388067B/es unknown
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2020
- 2020-06-11 EP EP20840902.9A patent/EP4000607A4/en active Pending
- 2020-06-11 WO PCT/MX2020/050011 patent/WO2021010812A1/es active Application Filing
- 2020-06-11 CA CA3144224A patent/CA3144224A1/en active Pending
- 2020-06-11 US US17/626,888 patent/US20220273596A1/en active Pending
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2022
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WO2008115572A1 (en) | 2007-03-21 | 2008-09-25 | Theraquest Biosciences, Inc. | Methods and compositions of nsaids |
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US9283192B2 (en) | 2010-03-05 | 2016-03-15 | University Of Strathclyde | Delayed prolonged drug delivery |
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Also Published As
Publication number | Publication date |
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CA3144224A1 (en) | 2021-01-21 |
EP4000607A1 (en) | 2022-05-25 |
MX388067B (es) | 2025-03-19 |
EP4000607A4 (en) | 2022-09-14 |
US20220273596A1 (en) | 2022-09-01 |
CO2022001574A2 (es) | 2022-03-18 |
MX2019008467A (es) | 2019-11-07 |
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