Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T7/00—Brake-action initiating means
  • B60T7/02—Brake-action initiating means for personal initiation
  • B60T7/04—Brake-action initiating means for personal initiation foot actuated
  • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
• • 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
  • A61K31/16—Amides, e.g. hydroxamic acids
  • A61K31/17—Amides, e.g. hydroxamic acids having the group >N—C(O)—N< or >N—C(S)—N<, e.g. urea, thiourea, carmustine
  • A61K31/175—Amides, e.g. hydroxamic acids having the group >N—C(O)—N< or >N—C(S)—N<, e.g. urea, thiourea, carmustine having the group, >N—C(O)—N=N— or, e.g. carbonohydrazides, carbazones, semicarbazides, semicarbazones; Thioanalogues thereof
• • 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
  • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
  • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P25/00—Drugs for disorders of the nervous system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P25/00—Drugs for disorders of the nervous system
  • A61P25/04—Centrally acting analgesics, e.g. opioids
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P25/00—Drugs for disorders of the nervous system
  • A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P39/00—General protective or antinoxious agents
  • A61P39/06—Free radical scavengers or antioxidants
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
  • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
  • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
  • B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
  • B60T13/142—Systems with master cylinder
  • B60T13/145—Master cylinder integrated or hydraulically coupled with booster
  • B60T13/146—Part of the system directly actuated by booster pressure
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
  • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
  • B60T13/66—Electrical control in fluid-pressure brake systems
  • B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
  • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
  • B60T13/66—Electrical control in fluid-pressure brake systems
  • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
  • B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/0012—Galenical forms characterised by the site of application
  • A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner

Definitions

• Chemotherapy has improved survival rates in patients with many of the common cancers.
• one of the most common complications of chemotherapeutic drugs is toxicity to the central nervous system (CNS), named chemotherapy-induced cognitive impairment, chemotherapy-induced cognitive dysfunction, post- chemotherapy cognitive impairment (PCCI), chemo fog, or chemo brain.
• CNS central nervous system
• chemotherapy-induced cognitive impairment chemotherapy-induced cognitive dysfunction
• PCCI post- chemotherapy cognitive impairment
• chemo fog or chemo brain.
• Chemo brain can be very frustrating both for those who are living with cancer, and their loved ones who are trying to support them.
• Chemo brain can seriously affect quality of life and life itself in cancer patients. This toxicity can manifest in many ways, including encephalopathy syndromes and confusional states, seizure activity, headache, cerebrovascular complications and stroke, visual loss, cerebellar dysfunction, and spinal cord damage with myelopathy.
• chemotherapy agents produce significant cognitive impairment in laboratory animals that are free from cancer as well as from other treatment- and diagnosis-related factors.
• Healthy rodents that are given chemotherapy show increase in cell death in the central nervous system, increase in oxidative stress, increase in microglia activity, suppression of hippocampal neurogenesis, decreases in levels of neurotrophic factors, and decreases in levels of hippocampal catecholamines, as compared to baseline values.
• the etiology of chemotherapy-induced cognitive impairment is largely unknown, but several candidate mechanisms have been suggested, including oxidative stress, impaired blood-brain barrier (BBB), neuroinflammation, decreased neurogenesis, etc.
• BBB blood-brain barrier
• MTX methotrexate
• 5-FU 5 -fluorouracil
• 5-FU can cause both acute and delayed neurotoxicity. Acute neurotoxicity manifests as encephalopathy cerebellar syndrome or as seizures. Acute neurotoxicity due to 5-FU is dose-related and generally self-limiting.
• 5-FU readily crosses the blood-brain barrier and disrupts cell proliferation. Clinically relevant concentrations of 5-FU were toxic for both central nervous system (CNS) progenitor cells and non-dividing oligodendrocytes in both in vitro and in vivo. Short-term systemic administration of 5-FU caused both acute CNS damage and a syndrome of progressively worsening delayed damage to myelinated tracts of the CNS associated with altered transcriptional regulation in oligodendrocytes and extensive myelin pathology. Functional analysis also provided the first demonstration of delayed effects of chemotherapy on the latency of impulse conduction in the auditory system, offering the possibility of non-invasive analysis of myelin damage associated with cancer treatment.
• CNS central nervous system
• Oxidative stress could be a common path for chemotherapy-induced cognitive impairment and neurodegenerative diseases. Oxidative stress can cause single and double DNA strand breaks and is the most frequent cause of DNA damage in neuronal cells. Oxidative damage can occur through exposure to foreign agents or result from an endogenous mechanism. Oxidative damage has been associated with numerous neurodegenerative diseases such as Alzheimer's disease and Parkinson's. Patients displaying mild cognitive impairment exhibit higher levels of oxidative DNA damage in both peripheral leukocytes and the brain. Many chemotherapeutic agents take advantage of the DNA damaging effects of oxidative stress; however, the effects of oxidative stress are not confined to abnormal cells. Evidence of oxidative damage has been seen in peripheral blood lymphocytes in breast cancer patients treated with chemotherapy.
• Chemotherapy treatment is associated with increased levels of nonprotein bound iron, increased levels of free radicals, and decreased antioxidant capacity, all factors suggested to increase oxidative stress. It is proposed that MTX treatment inhibits protective factors that may prevent radical damage. As a result, polyunsaturated fatty acid chains within the cell membranes are more susceptible to attack by reactive oxygen species. These initial attacks signal other lipid peroxy radicals to form, triggering a cascade of cell membrane damage.
• erythropoietin a glycoprotein to stimulate the production of red blood cells
• methylphenidate modulating catecholaminergic tone
• modafmil releasing catecholamines, norepinephrine, dopamine and histamine
• donepezil a cholinesterase inhibitor
• fluoxetine a selective serotonin reuptake inhibitor
• antioxidant treatment prevents chemotherapy-induced oxidative stress and cognitive deficits when administered prior to and during chemotherapy.
• systemic treatment in healthy mice with ⁇ -glutamyl cysteine ethyl ester prior to doxorubicin treatment significantly decreased markers of oxidative stress, namely, protein oxidization and lipid peroxidization.
• ZnS04 antioxidant zinc sulfate
• Prior intracerebroventricular treatment with the antioxidant zinc sulfate (ZnS04) prevented short-term memory impairments induced by systemic carmustine (BCNU) treatment.
• BCNU treatment caused rats to make more errors during learning and recall of the radial arm maze, whereas treatment with ZnS04 prior to BCNU prevented these deficits in learning and memory.
• the present invention is directed to a method of treating chemotherapy-induced cognitive impairment.
• One embodiment of the present invention is directed to a method of treating chemotherapy-induced cognitive impairment by administering to a patient in need at least one thiosemicarbazone compound.
• Another embodiment of the present invention is directed to a method of treating chemotherapy-induced cognitive impairment by administering to a patient in need a composition comprising 3-aminopyridine-2-carboxaldehyde thiosemicarbazone, or a prodrug thereof.
• Another embodiment of the present invention is directed to a method of treating chemotherapy-induced cognitive impairment by administering to a patient in need a composition comprising 3-aminopyridine-2-carboxaldehyde thiosemicarbazone the step of administering is intravenous, intraperitoneal, subcutaneous, intramuscular, topical, transdermal or oral.
• the present invention further encompasses methods of treating chemotherapy-induced cognitive impairment by administering a composition comprising a compound of Formula I, or an analogue thereof:
• R, R 1; R 2 , R 3 , and R4 are independently selected from the group consisting of hydrogen, Cl-8alkyl, C2-8alkenyl, C2-8alkynyl, C3-8cycloalkyl, Cl-8haloalkyl, C6- lOaryl, amino- Cl-8alkyl, hydroxy- Cl-8alkyl, Cl-8alkoxye- Cl-8alkyl, and Cl- 8alkanoyl, or NRtR 2 taken in combination form a 3 to 7 member ring which may comprise 0, 1, or 2 additional ring heteroatoms selected from N, O, and S;
• R6 is hydrogen, hydroxy, amino, or Cl-8alkyl;
• R 5 and R 7 are independently selected from the group consisting of hydrogen, halide, hydroxy, thiol, amino, hydroxyamino, U 2014/028039 mono- Cl-8alkylamino, di(Cl-8alkyl)amino, Cl-8alkoxy, Cl-8alkyl,
• the present invention further encompasses methods of treating chemotherapy-induced cognitive impairment by administering a composition comprising a compound of Formula II, or an analogue thereof:
• the present invention is directed to a method for the treatment of chemotherapy induced cognitive impairment comprising the step of administering to a patient a composition comprising a thiosemicarbazone compound.
• the means for synthesis of thiosemicarbazone compounds useful in the methods of the invention are well known in the art. Such synthetic schemes are described in U.S. Pat. Nos. 5,281,715; 5,767,134; 4,447,427; 5,869,676 and 5,721,259; all of which are incorporated herein by reference in their entirety
• the chemical structures of PAN-811 's analogues are shown in U.S. Pat. No 7,456,179, and patent applications of 20090275587, 20060194810 and 20060160826 each of which are hereby incorporated by reference.
• compositions required by the present invention typically comprise a compound useful in the methods of the invention and a pharmaceutically acceptable carrier.
• pharmaceutically acceptable carrier includes any and all solvents, dispersion media, coatings, antibacterial and antifungal agents, isotonic and absorption delaying agents, and the like that are physiologically compatible.
• the type of carrier can be selected based upon the intended route of administration.
• the carrier is suitable for intravenous, intraperitoneal, subcutaneous, intramuscular, topical, transdermal or oral administration.
• Pharmaceutically acceptable carriers include sterile aqueous solutions or dispersions and sterile powders for the extemporaneous preparation of sterile injectable solutions or dispersion.
• compositions typically must be sterile and stable under the conditions of manufacture and storage.
• the composition can be formulated as a solution, microemulsion, liposome, or other ordered structure suitable to high drug concentration.
• the carrier can be a solvent or dispersion medium containing, for example, water, ethanol, polyol (for example, glycerol, propylene glycol, and liquid polyetheylene glycol, and the like), and suitable mixtures thereof.
• the proper fluidity can be maintained, for example, by the use of a coating such as lecithin, by the maintenance of the required particle size in the case of dispersion and by the use of surfactants.
• isotonic agents for example, sugars, polyalcohols such as mannitol, sorbitol, or sodium chloride in the composition.
• Prolonged absorption of the injectable compositions can be brought about by including in the composition an agent which delays absorption, for example, monostearate salts and gelatin.
• the compounds can be administered in a time release formulation, for example in a composition which includes a slow release polymer.
• the active compounds can be prepared with carriers that will protect the compound against rapid release, such as a controlled release formulation, including implants and microencapsulated delivery systems.
• Biodegradable, biocompatible polymers can be used, such as ethylene vinyl acetate, polyanhydrides, polyglycolic acid, collagen, polyorthoesters, polylactic acid and polylactic, polyglycolic copolymers (PLG). Many methods for the preparation of such formulations are generally known to those skilled in the art.
• Sterile injectable solutions can be prepared by incorporating the active compound in the required amount in an appropriate solvent with one or a combination of ingredients enumerated above, as required, followed by filtered sterilization.
• dispersions are prepared by incorporating the active compound into a sterile vehicle which contains a basic dispersion medium and the required other ingredients from those enumerated above.
• the preferred methods of preparation are vacuum drying and freeze-drying which yields a powder of the active ingredient plus any additional desired ingredient from a previously sterile-filtered solution thereof.
• the compound may be coated in a material to protect it from the action of enzymes, acids and other natural conditions which may inactivate the agent.
• the compound can be administered to a subject in an appropriate carrier or diluent co-administered with enzyme inhibitors or in an appropriate carrier such as liposomes.
• Pharmaceutically acceptable diluents include saline and aqueous buffer solutions.
• Enzyme inhibitors include pancreatic trypsin inhibitor, diisopropylfluoro-phosphate (DEP) and trasylol.
• Liposomes include water- in-oil-in-water emulsions as well as conventional liposomes. Dispersions can also be prepared in glycerol, liquid polyethylene glycols, and mixtures thereof and in oils. Under ordinary conditions of storage and use, these preparations may contain a preservative to prevent the growth of microorganisms.
• the active agent in the composition preferably is formulated in the composition in a therapeutically effective amount.
• a “therapeutically effective amount” refers to an amount effective, at dosages and for periods of time necessary, to achieve the desired therapeutic result to thereby influence the therapeutic course of a particular disease state.
• a therapeutically effective amount of an active agent may vary according to factors such as the disease state, age, sex, and weight of the individual, and the ability of the agent to elicit a desired response in the individual. Dosage regimens may be adjusted to provide the optimum therapeutic response.
• a therapeutically effective amount is also one in which any toxic or detrimental effects of the agent are outweighed by the therapeutically beneficial effects.
• the active agent is formulated in the composition in a prophylactically effective amount.
• a prophylactically effective amount refers to an amount effective, at dosages and for periods of time necessary, to achieve the desired prophylactic result. Typically, since a prophylactic dose is used in subjects prior to or at an earlier stage of disease, the prophylactically effective amount will be less than the therapeutically effective amount.
• the amount of active compound in the composition may vary according to factors such as the disease state, age, sex, and weight of the individual. Dosage regimens may be adjusted to provide the optimum therapeutic response. For example, a single bolus may be administered, several divided doses may be administered over time or the dose may be proportionally reduced or increased as indicated by the exigencies of the therapeutic situation. It is especially advantageous to formulate parenteral compositions in dosage unit form for ease of administration and uniformity of dosage.
• Dosage unit form as used herein refers to physically discrete units suited as unitary dosages for the mammalian subjects to be treated; each unit containing a predetermined quantity of active compound calculated to produce the desired therapeutic effect in association with the required pharmaceutical carrier.
• the specification for the dosage unit forms of the invention are dictated by and directly dependent on (a) the unique characteristics of the active compound and the particular therapeutic effect to be achieved, and (b) the limitations inherent in the art of compounding such an active compound for the treatment of sensitivity in individuals.
• a compound of the invention can be formulated into a pharmaceutical composition wherein the compound is the only active agent therein.
• the pharmaceutical composition can contain additional active agents.
• two or more compounds of the invention may be used in combination.
• PAN-811 3-aminopyridine-2-carboxaldehyde thiosemicarbazone
• PAN-811 3-aminopyridine-2-carboxaldehyde thiosemicarbazone
• PAN-811 was administered intracerebroventricularly (Lev.) at a dose of 50 g per rat at 1 h after arterial occlusion. Staining of consecutive brain sections and computer-assisted quantitative analysis demonstrated that PAN-811 reduced the infarct volume by 59% in PAN-811 treated rats.
• MCAo middle cerebral artery occlusion
• PAN-811 treatment reduced infarct volume in a dose dependent manner with a maximal protection of 50% at a dose of 2mg/kg.
• PAN-811 treatment (2mg/kg) also resulted in a 70% reduction in brain edema volume. Accordingly, the mortality in PAN-811 treated groups was collectively reduced by 44% (Jiang et al, 2008).
• Mechanistically PAN- 811 not only prevents glutamate-induced excitatory cytotoxicity, veratridine-induced sodium channel opening that is related to Ca 2+ influx and staurosporine-induced apoptosis, but also blocks oxidative stress-induced neuronal cell death in many ways.
• PAN-811 at a concentration as low as 1 ⁇ suppressed in vitro hydrogen peroxide- induced LDH release by 78% (with PO.01, compared to untreated/H 2 0 2 -insulted group) and at a concentration of 10 ⁇ achieved maximal protection (by 90% comparing with untreated and H 2 0 2 -insulted group) with an EC 50 of -0.55 ⁇ (Pan et al., 2009).
• PAN-811 also inhibited oxidative stress-induced cell death of human Alzheimer's disease-derived and age-matched olfactory neuroepithelial cells via suppression of intracellular reactive oxygen species.
• PAN-811 manifested as a free radical scavenger in a cell free system where PAN-811 reduced 500 ⁇ of a stable free radical diphenylpicrylhydrazyl by 70%. Taken together, PAN- 811 has manifested as a potent antioxidant and neuroprotectant.
• PAN- 811 is a therapeutic agent for chemotherapy- induced cognitive deficit or chemo brain.
• PAN-811 should inhibit chemotherapy- induced cognitive deficit that is not only caused with antimetabolites (cytarabine, gludarabine, fluorouracil, mercaptopurine, methotrexate, thioguanine, gemcitabine, hydroxyurea), mitotic inhibitors (vincristine, vinblastine, vinorelbine), topoisomerase inhibitors (topotecan, irenotecan), paclitaxel, docetaxel and asparaginase, but also with alkylating agents (busulfan, carmustine, lomustine, chlorambucil, cyclophosphamide, cisplatin, carboplatin, ifosamide, mechlorethamine, melphalan, thiote
• antimetabolites cytarabine, gludarabine, fluorouracil, mercaptopurine, methotrex

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• 2013
  • 2013-03-14 US US13/803,482 patent/US20140271812A1/en not_active Abandoned
• 2014
  • 2014-03-14 JP JP2016502690A patent/JP6293258B2/ja not_active Expired - Fee Related
  • 2014-03-14 CA CA2905403A patent/CA2905403A1/en not_active Abandoned
  • 2014-03-14 EP EP14770876.2A patent/EP2968319B1/en active Active
  • 2014-03-14 WO PCT/US2014/028039 patent/WO2014152864A1/en not_active Ceased
• 2018
  • 2018-01-30 JP JP2018013721A patent/JP2018062537A/ja not_active Withdrawn

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