WO2014028997A1 - Peptídeo sintético pntx(19), composições farmacêuticas e uso - Google Patents
Peptídeo sintético pntx(19), composições farmacêuticas e uso Download PDFInfo
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- WO2014028997A1 WO2014028997A1 PCT/BR2013/000319 BR2013000319W WO2014028997A1 WO 2014028997 A1 WO2014028997 A1 WO 2014028997A1 BR 2013000319 W BR2013000319 W BR 2013000319W WO 2014028997 A1 WO2014028997 A1 WO 2014028997A1
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- peptide
- pntx
- pntx2
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- synthetic peptide
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/43504—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates
- C07K14/43513—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates from arachnidae
- C07K14/43518—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from invertebrates from arachnidae from spiders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/04—Peptides having up to 20 amino acids in a fully defined sequence; Derivatives thereof
- A61K38/10—Peptides having 12 to 20 amino acids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
- A61P15/10—Drugs for genital or sexual disorders; Contraceptives for impotence
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/04—Linear peptides containing only normal peptide links
- C07K7/08—Linear peptides containing only normal peptide links having 12 to 20 amino acids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Definitions
- the present invention relates to a 19 amino acid synthetic peptide called PnTx (19), constructed from the native toxin sequence PnTx2-6 of the Phoneutria nigriventer spider. It also relates to pharmaceutical compositions containing such a peptide and their use in treating erectile dysfunction and / or enhancing erectile function.
- the Phoneutria nigriventer spider venom is rich in bioactive polypeptides with different pharmacological effects, acting mainly on ion channels and receptors.
- the predominant symptoms caused by its venom result from general hyperexcitability.
- PnTx2-6 potentiates erection in normotensive rats, restores erectile function in hypertensive animals (DOCA-salt) and also in diabetic mice or aged rats (for review see: NUNES, KP CARDOSO, F. L, CARDOSO-Jr., H.
- Nitric Oxide Synthase NOS
- NO Nitric Oxide
- YONAMINE CM. Et al. Toxicon 44, 169- 172, 2004; NUNES et al., 2008, 2009
- VILLANOVA FE, et al. Toxicon. 54 (6), 793-801 , 2009.
- Nitric oxide (NO) a product of hydrolysis of L-arginine by nitric oxide synthase (NOS), is an essential mediator of the erection process [LEWIS, RW et al. A. Definitions, classification, and epidemiology of sexual dysfunction. In: sexual Medicine. Sexual Disfuntion in Men and Women, Lue, TF; Basson, R .; Rosen, R .; Giuliano, F .; Khoury, S .; Montorsi, F., (Publishers.) International for Sexual Medicine, Paris, p. 39-72, 2004].
- GCs soluble guanylate cyclase
- TODA cyclic guanosine monophosphate
- TODA N. et al. Pharmacol. Ther. 106 (2), 233-266, 2005
- PRIETO D. Int. J. Impot. Res. 20 (1) , 17-29, 2008.
- cGMP cGMP induces a decrease in intracellular calcium levels, leading to the relaxation of smooth muscle cells with subsequent penile tumescence (TODA et al., 2005). Erection terminates due to hydrolysis of cGMP by the enzyme phosphodiesterase type 5 (PDE-5), forming GMP (IGNARRO, LJ et al. Biochem Biophys Res Commun., 170, 843-50, 1990; RAJFER, J. et al. N Engl. J. Med. 326 (2), 90-94, 1992; LEE, MRJ Biol. Chem. 272, 5063-5068, 1997; BIVALACQUA, TJet., Trends Pharmacol. Sci., 21 (12), 484. -489, 2000).
- PDE-5 phosphodiesterase type 5
- PDE-5 inhibitors such as sildenafil (Viagra), taladafil (Cialis®) and vardenafil (Levitra®) (MORELAND, RB et al. Trends Endocrinol. Metab. 10 (3) , 97-104, 1999, PRIVIERO, FB et al Acta Pharmacol, Sin 28 (6), 751-755, 2007; Milk, R. et al., Recent Pat. Cardiovasc. Drug Discov 2 (2), 19 -132, 2007).
- PDE-5 inhibitors are not effective in treating patients with vascular diseases where NO production is impaired.
- this toxin enables the production of effective drugs for patients with erectile dysfunction who cannot be treated with drugs. currently available.
- PnTx2-6 Another important effect of PnTx2-6 refers to the stimulation of glutamate release from rat cerebral cortical synaptosomes [SILVA, 2012 -com. personal - SILVA, C.N. Analysis of the release of L-glutamate from rat cerebral cortex synaptosomes by the toxin PnTx2-6 from the arming spider venom (Phoneutria nigriventer). Initial evaluation of synthetic peptide (PnTx-19) activity in glutamate release and as an erectile function enhancer. Master thesis to be presented on 31 -08-12. Department of Biochemistry and Immunology, Federal University of Minas Gerais. Belo Horizonte, Minas Gerais, 120 p., 2012]. Yonamine et al.
- L-glutamate L-glutamate or L-glu
- L-glu Glutamate
- Glutamate is the major and most abundant excitatory neurotransmitter of the mammalian CNS. It plays a crucial role in mechanisms underlying synaptic plasticity, which form part of the physiological basis of behavioral processes such as cognition and memory. L-glu also plays relevant roles in nervous system development such as formation, remodeling, synapse elimination, migration, proliferation, neuronal differentiation, and cell death (PRYBYLOWSKI, K. et al. J Biol Chem. 279, 9673-6, 1994; MCKINNEY, RA. Journal Physiology. 588 (1), 107-116, 2010; MANENT, JB, DAM, A.
- glutamate may facilitate penile erection by activating some brain areas that are involved in the control of erectile function, such as the paraventricular nucleus (PVN), tegmented ventral area (VTA), the hippocampus, among others (ARGIOLAS, A. , MELIS, MR Prog.Neurobiol 47, 235-255, 1995; SONG, Y., RAJASEKARAN, M.
- PVN paraventricular nucleus
- VTA tegmented ventral area
- ARGIOLAS A.
- MELIS MR Prog.Neurobiol 47, 235-255, 1995
- SONG Y., RAJASEKARAN, M.
- PnTx2-6 is likely to have an effect on this system in the brain, since the first toxicity tests with this toxin were via intracerebral injection when it was found to cause erection (for review see NUNES et al., 2009). .
- other in vivo toxin tests aiming at the study of erectile function potentiation were based on subcutaneous or intravenous injections, which resulted in positive responses (NUNES, 2008b, NUNES et al., 2008a).
- Yonamine et al. (2005) found that iodinated PnTx2-6 can penetrate the blood brain barrier and thus exert some effects directly on the CNS.
- a concrete result of the peripheral action of the toxin on the erection refers to the relaxation of cavernous body slices when the toxin is directly applied on this preparation in vitro (NUNES et al., 2010a; 2010b; 2012).
- Matavel et al. (2009), using molecular modeling tools, indicated some amino acids of PnTx2-6, in discontinuous epitope, which supposedly interact with the sodium channel.
- the chemical synthesis of a partial PnTx2-6 peptide sequence that encompasses these amino acids opens new perspectives for structural and pharmacological characterizations of the interaction of molecules with their receptors.
- the relatively simple and high-yield peptide synthesis could provide material needed for pharmacological study in different tissues, circumventing the limitation observed with material obtained by venom purification or even by heterologous expression, which is difficult and costly (MATAVEL, A. et al. Biochemistry. 48 (14), 3078-3088, 2009).
- the modified synthetic peptide PnTx (19) has been developed which has a short 19 amino acid polypeptide chain, the which allows its easy obtainment for commercial purposes, favoring the development of pharmaceutical compositions for use in the treatment of erectile dysfunction and / or in the potentiation of erectile function.
- this peptide induces glutamate release in rat cortical brain synaptosomes, stimulates relaxation of mouse and rat cavernous body slices, has less toxic effect with respect to the native toxin, of which it is derivative, and yet, does not present cardiac toxicity, unlike Viagra, present in the market; It is also effective in hypertensive animals and has low immunogenicity.
- FIG. 1 HPLC reverse phase chromatography of PnTx peptide synthesis products (19).
- Preparative column Sephasil peptide C8 5 ⁇ ST 4.6 / 100, equilibrated with Milli-Q 0.1% TFA water (by volume) eluted with a gradient 0 to 25% solution B (0.1% TFA / acetonitrile v / v) in 3 minutes, 25 to 35% B in 30 minutes and 35 to 100% solution B in 5 minutes at a flow rate of 2.0 ml / min.
- Figure 3 Synaptosomal viability - verified by the activity of the enzyme lactate dehydrogenase, which oxidizes NADH to NAD +. This determines a reading reduction (339nm) that allows quantifying the enzymatic activity.
- Figure 4 Effect of different concentrations of PnTx (19) on the release of L-glutamate - Elisa plate containing 300 l / well of synaptosome (10% final vol) and NADP + (final concentration 1 mM) mixture in KRH with Calcium (2mM) maintained at 37 ° C under constant agitation was monitored. Fluorescence reading was performed on the spectrofluorometer for 2460 seconds. GDH enzyme (35 units for the final volume of 300 ⁇ ) was added to the wells at 60 seconds; At 660 seconds, in different wells, different concentrations of PnTx (19) ("10-5M, 3x10-5 M, 10-6 M and 3x10-6 M”) and KCI (33 mM) were added.
- Figure 6- Effects of PnTx-19 Peptide and PnTx2-6 toxin on cardiac sodium current.
- A- Effect of PnTx2-6 toxin on peak sodium current (black arrow) and inactivation current (gray arrow).
- C- Effect of PnTx-19 peptide on peak sodium current and inactivation current.
- Each black circle indicates the amplitude of INa, measured every 1s at a -20mV membrane potential. Gray bars indicate when the cell was exposed to PnTx2-6 or PnTx -19 (peptide).
- Figure 8 Analysis of antibody titer.
- the present invention comprises the peptide PnTx (19), NH3.
- GERRQYFWIAWYKLANSKK-COOH (SEQ ID NO: 1), chemically synthesized using the Fmoc / t-butyl strategy of solid support synthesis (MERRIFIELD, RB Solid-phase peptide synthesis. Adv. Enzymol. Report Areas Mol. Biol. (32) , 221-296.1969).
- the Peptide has 19 amino acid residues, is linear and was designed from the probable three-dimensional structure of PnTx2-6 proposed after bioinformatics analysis and modeling studies. molecular. This encompasses the hydrophobic core and positively charged residues surrounding this region which, according to molecular modeling studies, are responsible for the interaction of the toxin with the sodium channel (MATAVEL et al., 2009).
- sequence (discontinuous epitope) developed from these molecular modeling studies underwent crucial modifications to the present invention so that its activity on erectile function was maintained: the amino acid cysteine at position 17 was exchanged for Serine, and the peptide was amidated at C-terminal portion and acetylated in the N-terminal portion, aiming to increase its solubility.
- compositions are characterized in that they comprise a synthetic peptide and a pharmaceutically acceptable excipient or mixture of excipients, wherein the peptide may be present in free form or coupled to controlled release systems.
- Controlled release systems may include liposomes, cyclodextrins, biodegradable polymers, capsules, micro- and nano-capsules, micro- and nano-particles, bolus preparations, osmotic pumps, diffusion devices, lipospheres, transdermal and / or liquid delivery systems which, when subjected to temperature changes, form a solid or gel in situ.
- the pharmaceutical compositions may be administered by oral, topical, intramuscular, intravenous, subcutaneous, inhalation or implantable device routes.
- PnTx (19) (NH 3- GlyGluArgArgGInTyrPheTrpIleAlaTrpTyrLysLeuAlaAsnSerLysLys-COOH) was partially designed using the PEPOP bioinformatics program.
- PEPOP bioinformatics program a discontinuous epitope containing 19 amino acids for the PnTx2-6 toxin has been proposed (FLEURY, Cecile. Bioinformatics tools dedicated to the study of the structure-function-antigenicity relationship in animal peptide toxins. Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 180 p., 2009).
- PnTx peptide (19) was purified by reverse phase chromatography ( ⁇ KTA Explorer 10 HPLC).
- the chromatographic profile shown in Figure 1 demonstrates the presence of synthesis byproducts and the PnTx fraction (19), which elutes with 29% buffer B.
- mass spectrometric analysis MALDI-TOF
- Figure 2 mass spectrometric analysis
- Example 2- Synaptosomal Viability Test
- lactate dehydrogenase enzyme activity tests were performed, according to Kubowistz, Ott, 1943 (KUBOWISTZ, F., OTT, C. Biochem Z. 319, 94 17, 1943).
- Triton X-00 100% lysis
- PnTx (19) in the following concentrations : 0 "5 M, 3x10" 5 M; 10-6 M; 3x10 "6 M.
- mice were sacrificed by decapitation, the penises surgically removed and placed on a petri dish containing Krebs Ringer bicarbonate - (NaCI, 11.1, 1; KCI, 4.7; KH2PO4, 1.0; MgSO4, 1.0; NaHCO3 25.0; CaCl2 2.5; and Glucose 11.1mM), bubbled with a mixture of 95% O2 and 5% CO2.
- the glans, the cancellous body and the urethra were removed and the corpora cavernosa dissected with removal of the albuginic tunic and separated by cutting the fibrous septum between them.
- the cavernous body strips measuring approximately 1 * 1 * 7 mm were mounted separately in a chamber, one end attached to an electrode and the other attached to a transducer.
- the chambers contained Krebs (pH 7.4) at 37 ° C, equilibrated with 95% O2 and 5% CO2.
- the tissue was stretched to a passive force of 2.0 mN and stabilized for 60 minutes and the solution replaced every 15 minutes. Changes in isometric force were recorded using an isometric force transducer (World Precision Instruments, Inc., Sarasota, FL, USA) connected to an amplifier (TBM-4 model; World Precision Instruments, Inc., USA) using WinDaq software. Data Acquisition (Dataq® Instruments, USA).
- a KCI solution 120 mM was added to the corpora cavernosa slices and then the preparation was washed with Krebs three times.
- FIG. 4 shows that PnTx2-6 toxin (5x10 "8 M) and the peptide PnTx (19) (10 -6 M) induced relaxation of 83%, whereas the control with acetylcholine (10 -4 M) induced 81 6 % relaxation in corpus cavernosum strips of phenylephrine pre-contracted mice (10 "5 M).
- L-glutamate release was analyzed as proposed by Nicholls, et al. 1987 (NICHOLLS, D. et al. J. Neurochem. 49, 50-57, 1987).
- NICHOLLS Nicholls, et al. 1987
- the rats were maintained under a 12 hr Light / dark controlled cycle at stable temperature with free access to water and food. They were decapped 10 to 15 minutes after intraperitoneal injection of Heparin (200 IU).
- the chest was opened, the heart carefully dissected and perfused through a aortic tip with Krebs-Ringer's solution (KRS) containing (in mmol / L) NaCI (11.4), KCI (4.7), KH2PO4 (1, 2), MgSO4.7H2O (1.2), CaCl2.2 H2O (1.25), glucose (11.7) and NaHCO3 (26.5).
- KRS Krebs-Ringer's solution
- the perfusion flow was kept constant (10ml_ / min) at 37 ° C and under constant oxygenation (5% CO2 and 95% O2).
- a balloon connected to a pressure transducer was inserted into the right ventricle and ventricular pressure, heart rate, and derivative ⁇ dP / dt were monitored (Figure 7).
- the balloon volume was adjusted to a final diastolic pressure of about 10mm Hg.
- 100 ⁇ _ vehicle (Control) toxin at concentrations of 37.8 nmol / L - 3.78 pmol / L or peptide at concentrations of 37.8 nmol / L - 37.8 pmol / were injected.
- L in infusion buffer was used toxin at concentrations of 37.8 nmol / L - 3.78 pmol / L or peptide at concentrations of 37.8 nmol / L - 37.8 pmol / were injected.
- L in infusion buffer was used toxin at concentrations of 37.8 nmol / L - 3.78 pmol / L or peptide at concentrations of 37.8 nmol / L
- mice Male Swiss mice, 20-23 gr, were divided into 2 groups (Control-Adjuvant: aluminum hydroxide- Figure 8 A and PnTx-19 -10pG- Figure 8B), each group containing 4 animals. The mice were immunized subcutaneously. At 21, 35 and 49 days of the first inoculation, the mice received a reinforcement of the preparations mentioned above.
- serum collected from the tails of mice was evaluated 15, 30, 40 and 60 days after first inoculation by the indirect enzyme immunoassay (ELISA) as described for other preparations ( DEL PINO, FAB, BRANDELLI, A., GONZALES, JC, HENRIQUES, JAP, DEWES, H .. Effect of antibodies against N-acetylglucosaminidase on reproductive efficiency of Boophilus microplus tick Vet Parasitol 79, 247- 255, 1998).
- ELISA indirect enzyme immunoassay
- the immunogenicity of PnTx19 was evaluated after 10 g subcutaneous injection of it (Figure 8B). No hypersensitivity reactions or death of animals were observed during the trials. There was a small increase in antibody titer in group 2 (PnTx-9-10 pg) 60 days after the first inoculation of the peptide ( Figure 8B). Importantly, the peptide dose of 10 pg is approximately 12.5 times higher than the estimated LD 5 for PnTx2-6 (0.79 pg / mouse) toxin (MN, DINIZ CR, VALENTIM AC, VON EICKSTEDT , GILROY J., RICHARDSON M. Purification and amino acid sequences of four Tx2 neurotoxins from the venom of the Brazilian armed spider Phoneutria nigriventer (Keys) FEBS Lett. 310, 153-156, 1992).
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Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020157006585A KR102103715B1 (ko) | 2012-08-20 | 2013-08-20 | 합성 PnTx(19) 펩타이드, 약학 조성물 및 용도 |
| ES13831141.0T ES2677149T3 (es) | 2012-08-20 | 2013-08-20 | Péptido PnTx(19) sintético, composiciones farmacéuticas y uso |
| EP13831141.0A EP2899198B1 (en) | 2012-08-20 | 2013-08-20 | Synthetic pntx(19) peptide, pharmaceutical compositions and use |
| MX2015002279A MX362058B (es) | 2012-08-20 | 2013-08-20 | Péptido pntx(19) sintético, composición farmacéutica y uso. |
| JP2015527740A JP6430938B2 (ja) | 2012-08-20 | 2013-08-20 | 合成ポリペプチドPnTx(19)、医薬組成物及びその使用 |
| US14/423,087 US9279004B2 (en) | 2012-08-20 | 2013-08-20 | Synthetic PnTx(19) peptide, pharmaceutical compositions and use |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRBR1020120208008 | 2012-08-20 | ||
| BR102012020800A BR102012020800A2 (pt) | 2012-08-20 | 2012-08-20 | Peptídeo sintético pntx (19), composições farmacêuticas e uso |
| BR102013020574-5A BR102013020574B1 (pt) | 2013-08-13 | 2013-08-13 | PEPTÍDEO SINTÉTICO PnTx(19), COMPOSIÇÕES FARMACÊUTICAS E USO |
| BRBR1020130205745 | 2013-08-13 |
Publications (1)
| Publication Number | Publication Date |
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| WO2014028997A1 true WO2014028997A1 (pt) | 2014-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/BR2013/000319 Ceased WO2014028997A1 (pt) | 2012-08-20 | 2013-08-20 | Peptídeo sintético pntx(19), composições farmacêuticas e uso |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US9279004B2 (pt) |
| EP (1) | EP2899198B1 (pt) |
| JP (1) | JP6430938B2 (pt) |
| KR (1) | KR102103715B1 (pt) |
| CL (1) | CL2015000415A1 (pt) |
| MX (1) | MX362058B (pt) |
| PT (1) | PT2899198T (pt) |
| WO (1) | WO2014028997A1 (pt) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107033231A (zh) * | 2015-12-30 | 2017-08-11 | 纳丝真生命工学株式会社 | Sv82多肽及含有其作为有效成分的用于改善皮肤皱纹及保持皮肤弹性的化妆品组合物 |
| WO2020006617A1 (en) * | 2018-07-05 | 2020-01-09 | Biozeus Desenvolvimento De Produtos Biofarmacêuticos | Synthetic peptides, prodrugs, pharmaceutical compositions and uses |
| WO2024168415A1 (en) * | 2023-02-17 | 2024-08-22 | Biozeus Biopharmaceutical S.A. | Topical peptide formulation for the treatment of sexual dysfunction |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101636851B1 (ko) * | 2016-06-03 | 2016-07-06 | (주)넥스젠바이오텍 | 피부 세포 증식 효과가 증가한 열 안정성 인간 상피세포성장인자-거미독 융합단백질 및 이를 유효성분으로 함유하는 피부 주름 개선 및 탄력 유지용 화장료 조성물 |
| CN114302734A (zh) * | 2019-09-03 | 2022-04-08 | 生物医药产品开发公司 | PnPP-19用于预防和治疗眼病的方法和用途 |
| WO2025133214A1 (en) | 2023-12-21 | 2025-06-26 | Novaliq Gmbh | Ophthalmic polypeptide compositions for the treatment of posterior eye disorders |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009083808A2 (en) | 2007-12-31 | 2009-07-09 | Universidad De La Frontera | Compositions and methods for treating erectile dysfunction |
| BRPI0800596A2 (pt) * | 2008-01-31 | 2009-09-22 | Univ Minas Gerais | método para a potencialização da função erétil através do uso das composições farmacêuticas de toxina tx2-6 da aranha phoneutria nigriventer |
-
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- 2013-08-20 PT PT138311410T patent/PT2899198T/pt unknown
- 2013-08-20 EP EP13831141.0A patent/EP2899198B1/en active Active
- 2013-08-20 JP JP2015527740A patent/JP6430938B2/ja active Active
- 2013-08-20 US US14/423,087 patent/US9279004B2/en active Active
- 2013-08-20 MX MX2015002279A patent/MX362058B/es active IP Right Grant
- 2013-08-20 KR KR1020157006585A patent/KR102103715B1/ko active Active
- 2013-08-20 WO PCT/BR2013/000319 patent/WO2014028997A1/pt not_active Ceased
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009083808A2 (en) | 2007-12-31 | 2009-07-09 | Universidad De La Frontera | Compositions and methods for treating erectile dysfunction |
| BRPI0800596A2 (pt) * | 2008-01-31 | 2009-09-22 | Univ Minas Gerais | método para a potencialização da função erétil através do uso das composições farmacêuticas de toxina tx2-6 da aranha phoneutria nigriventer |
Non-Patent Citations (46)
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| ANDRADE E ET AL.: "Penile erection induced in vivo by a purified toxin from the Brazilian spider Phoneutria nigriventer.", BJU INT., vol. 102, 2008, pages 835 - 7, XP002616322, DOI: doi:10.1111/j.1464-410X.2008.07762.x * |
| ARGIOLAS, A.; MELIS, M.R., PROG. NEUROBIOL., vol. 47, 1995, pages 235 - 255 |
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| Publication number | Publication date |
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| EP2899198A4 (en) | 2016-01-20 |
| EP2899198B1 (en) | 2018-05-02 |
| PT2899198T (pt) | 2018-06-29 |
| KR20150084766A (ko) | 2015-07-22 |
| EP2899198A1 (en) | 2015-07-29 |
| MX362058B (es) | 2019-01-07 |
| MX2015002279A (es) | 2015-10-15 |
| US20150218233A1 (en) | 2015-08-06 |
| CL2015000415A1 (es) | 2015-09-11 |
| US9279004B2 (en) | 2016-03-08 |
| JP6430938B2 (ja) | 2018-11-28 |
| KR102103715B1 (ko) | 2020-04-23 |
| JP2015535808A (ja) | 2015-12-17 |
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