WO2000030652A1 - Utilisation du sulfate de dehydroepiandrosterone pour augmenter le nombre de recepteurs nmda chez un mammifere - Google Patents
Utilisation du sulfate de dehydroepiandrosterone pour augmenter le nombre de recepteurs nmda chez un mammifere Download PDFInfo
- Publication number
- WO2000030652A1 WO2000030652A1 PCT/FR1999/002848 FR9902848W WO0030652A1 WO 2000030652 A1 WO2000030652 A1 WO 2000030652A1 FR 9902848 W FR9902848 W FR 9902848W WO 0030652 A1 WO0030652 A1 WO 0030652A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sdhea
- nmda receptors
- brain
- pharmaceutical composition
- mammal
- Prior art date
Links
- 108090001041 N-Methyl-D-Aspartate Receptors Proteins 0.000 title claims abstract description 22
- 102000004868 N-Methyl-D-Aspartate Receptors Human genes 0.000 title claims abstract description 22
- 241000124008 Mammalia Species 0.000 title claims abstract description 6
- FMGSKLZLMKYGDP-USOAJAOKSA-N dehydroepiandrosterone Chemical compound C1[C@@H](O)CC[C@]2(C)[C@H]3CC[C@](C)(C(CC4)=O)[C@@H]4[C@@H]3CC=C21 FMGSKLZLMKYGDP-USOAJAOKSA-N 0.000 title description 5
- FMGSKLZLMKYGDP-UHFFFAOYSA-N Dehydroepiandrosterone Natural products C1C(O)CCC2(C)C3CCC(C)(C(CC4)=O)C4C3CC=C21 FMGSKLZLMKYGDP-UHFFFAOYSA-N 0.000 title description 2
- 229960002847 prasterone Drugs 0.000 title description 2
- 210000004556 brain Anatomy 0.000 claims abstract description 25
- 239000008194 pharmaceutical composition Substances 0.000 claims abstract description 11
- 239000002775 capsule Substances 0.000 claims description 4
- 241000282414 Homo sapiens Species 0.000 claims description 3
- 230000037396 body weight Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000006187 pill Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 239000000829 suppository Substances 0.000 claims description 2
- 239000003826 tablet Substances 0.000 claims description 2
- CZWCKYRVOZZJNM-USOAJAOKSA-N dehydroepiandrosterone sulfate Chemical compound C1[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@H]3CC[C@](C)(C(CC4)=O)[C@@H]4[C@@H]3CC=C21 CZWCKYRVOZZJNM-USOAJAOKSA-N 0.000 abstract description 4
- 241000700159 Rattus Species 0.000 description 13
- 102000005962 receptors Human genes 0.000 description 8
- 108020003175 receptors Proteins 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000027455 binding Effects 0.000 description 4
- 150000003431 steroids Chemical class 0.000 description 4
- 241000699670 Mus sp. Species 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 238000000376 autoradiography Methods 0.000 description 3
- 230000015654 memory Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- DIJBBUIOWGGQOP-QGVNFLHTSA-N pregnenolone sulfate Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H](C(=O)C)[C@@]1(C)CC2 DIJBBUIOWGGQOP-QGVNFLHTSA-N 0.000 description 3
- AURFZBICLPNKBZ-YZRLXODZSA-N 3alpha-hydroxy-5beta-pregnan-20-one Chemical compound C([C@H]1CC2)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H](C(=O)C)[C@@]2(C)CC1 AURFZBICLPNKBZ-YZRLXODZSA-N 0.000 description 2
- CZWCKYRVOZZJNM-UHFFFAOYSA-N Prasterone sodium sulfate Natural products C1C(OS(O)(=O)=O)CCC2(C)C3CCC(C)(C(CC4)=O)C4C3CC=C21 CZWCKYRVOZZJNM-UHFFFAOYSA-N 0.000 description 2
- AURFZBICLPNKBZ-UHFFFAOYSA-N Pregnanolone Natural products C1CC2CC(O)CCC2(C)C2C1C1CCC(C(=O)C)C1(C)CC2 AURFZBICLPNKBZ-UHFFFAOYSA-N 0.000 description 2
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002490 cerebral effect Effects 0.000 description 2
- BTCSSZJGUNDROE-UHFFFAOYSA-N gamma-aminobutyric acid Chemical compound NCCCC(O)=O BTCSSZJGUNDROE-UHFFFAOYSA-N 0.000 description 2
- 210000001320 hippocampus Anatomy 0.000 description 2
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 229950009829 prasterone sulfate Drugs 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229910052722 tritium Inorganic materials 0.000 description 2
- OGNSCSPNOLGXSM-UHFFFAOYSA-N (+/-)-DABA Natural products NCCC(N)C(O)=O OGNSCSPNOLGXSM-UHFFFAOYSA-N 0.000 description 1
- JWMFYGXQPXQEEM-NUNROCCHSA-N 5β-pregnane Chemical compound C([C@H]1CC2)CCC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H](CC)[C@@]2(C)CC1 JWMFYGXQPXQEEM-NUNROCCHSA-N 0.000 description 1
- 208000024827 Alzheimer disease Diseases 0.000 description 1
- 208000000044 Amnesia Diseases 0.000 description 1
- 208000031091 Amnestic disease Diseases 0.000 description 1
- 102000018899 Glutamate Receptors Human genes 0.000 description 1
- 108010027915 Glutamate Receptors Proteins 0.000 description 1
- HOKKHZGPKSLGJE-GSVOUGTGSA-N N-Methyl-D-aspartic acid Chemical compound CN[C@@H](C(O)=O)CC(O)=O HOKKHZGPKSLGJE-GSVOUGTGSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000008351 acetate buffer Substances 0.000 description 1
- 210000004404 adrenal cortex Anatomy 0.000 description 1
- VREFGVBLTWBCJP-UHFFFAOYSA-N alprazolam Chemical compound C12=CC(Cl)=CC=C2N2C(C)=NN=C2CN=C1C1=CC=CC=C1 VREFGVBLTWBCJP-UHFFFAOYSA-N 0.000 description 1
- 230000006986 amnesia Effects 0.000 description 1
- 239000005557 antagonist Substances 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000326 densiometry Methods 0.000 description 1
- 210000001947 dentate gyrus Anatomy 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 229950007402 eltanolone Drugs 0.000 description 1
- 229960003692 gamma aminobutyric acid Drugs 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007787 long-term memory Effects 0.000 description 1
- 102000006240 membrane receptors Human genes 0.000 description 1
- 108020004084 membrane receptors Proteins 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002858 neurotransmitter agent Substances 0.000 description 1
- 230000009871 nonspecific binding Effects 0.000 description 1
- 230000036470 plasma concentration Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000002287 radioligand Substances 0.000 description 1
- 230000009870 specific binding Effects 0.000 description 1
- 239000003270 steroid hormone Substances 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- PIEPQKCYPFFYMG-UHFFFAOYSA-N tris acetate Chemical compound CC(O)=O.OCC(N)(CO)CO PIEPQKCYPFFYMG-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
- A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
- A61K31/568—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P3/00—Drugs for disorders of the metabolism
Definitions
- the present invention relates to the use of dehydroepiandrosterone sulfate (SDHEA) in a pharmaceutical composition intended to increase the number of NMDA receptors (N-Methyl-D-Aspartate) in the brain of a mammal.
- SDHEA dehydroepiandrosterone sulfate
- SDHEA Dehydroepiandrosterone and its sulfate
- SDHEA are steroid hormones synthesized mainly in the adrenal cortex.
- the demonstration of a de novo synthesis in the brain suggests a central activity of these steroids.
- a subject of the invention is therefore the use of SDHEA for the manufacture of a pharmaceutical composition intended to increase the number of NMDA receptors in a mammal and thereby prevent or compensate for the physiological decrease in the number of said receptors.
- the pharmaceutical composition is intended for the treatment of human beings aged approximately 40 to 60 years.
- the pharmaceutical composition is administered in a dose and for a duration sufficient for this administration to cause an effective increase in the number of NMDA receptors.
- this dose is between 0.001 and 0.10 g / kg of body weight of the patient, preferably between 0.002 and 0.05 g / kg and more preferably still between 0.003 and 0.03 g / kg of body weight.
- the pharmaceutical composition contains between 2 mg and 5 g of SDHEA, preferably 20 mg and 2 g and more preferably still 50 mg and 1.5 g. It can be in the form of tablets, pills, capsules, suppositories, capsules, ampoules, etc.
- the preferred dosage form is the tablet form.
- SDHEA for the prevention of the physiological decrease in NMDA receptors with age.
- the invention will be better understood using the following non-limiting examples. EXAMPLE 1; LIGAND MARKING OF NMDA RECEPTORS [ 3 H1 -MK801
- NMDA receptors in the rat brain was carried out by the quantitative autoradiography technique, thus making it possible to visualize and quantify the number of receptors in different regions of the brain.
- the radioactive ligand allowing specific recognition of NMDA receptor sites is the dizocilpme (MK801), labeled with tritium [ 3 H] -MK801 (Kemp et al. TINS (1987) 294-298)
- the brain sections were preincubated in 50 mM Tris-acetate buffer pH 7.4 for 30 minutes at 4 ° C. Then they were quickly dried at room temperature.
- Control sections were incubated with unlit tritium-labeled MK801 at 10 "S M to determine non-specific binding.
- the films were developed for 2 minutes in a Kodak D19 developer, then they were fixed in the Kodak Rapid fixer, and finally they were rinsed for one hour under running water.
- the apparent [ 3 H] -MK801 binding sites are measured by the optical density DO for the total specific binding of [ 3 H] -MK801 in the cortex and different regions of the hippocampus: CA X ; CA 3 ; lateral blade of the toothed gyrus DGlb and the middle blade of the toothed gyrus DGmb.
Landscapes
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Obesity (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hematology (AREA)
- Diabetes (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU12775/00A AU1277500A (en) | 1998-11-20 | 1999-11-19 | Use of dehydroepiandrosterone for increasing the number of nmda receptors in a mammal |
EP99956092A EP1131074A1 (fr) | 1998-11-20 | 1999-11-19 | Utilisation du sulfate de dehydroepiandrosterone pour augmenter le nombre de recepteurs nmda chez un mammifere |
CA002351980A CA2351980A1 (fr) | 1998-11-20 | 1999-11-19 | Utilisation du sulfate de dehydroepiandrosterone pour augmenter le nombre de recepteurs nmda chez un mammifere |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/14669 | 1998-11-20 | ||
FR9814669A FR2786102B1 (fr) | 1998-11-20 | 1998-11-20 | Utilisation de sulfate de dehydroepiandrosterone pour augmenter le nombre de recepteurs nmda chez un mammifere |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09856261 A-371-Of-International | 2001-09-24 | ||
US10/441,276 Continuation-In-Part US20030225049A1 (en) | 1998-11-20 | 2003-05-20 | Method of treatment for increasing the number of NMDA receptors in a mammalian brain |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000030652A1 true WO2000030652A1 (fr) | 2000-06-02 |
Family
ID=9533022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/002848 WO2000030652A1 (fr) | 1998-11-20 | 1999-11-19 | Utilisation du sulfate de dehydroepiandrosterone pour augmenter le nombre de recepteurs nmda chez un mammifere |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1131074A1 (fr) |
AU (1) | AU1277500A (fr) |
CA (1) | CA2351980A1 (fr) |
FR (1) | FR2786102B1 (fr) |
WO (1) | WO2000030652A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002000225A1 (fr) * | 2000-06-29 | 2002-01-03 | Hunter-Fleming Limited | 7-hydroepiandrosterone presentant une activite neuroprotectrice |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004065546A2 (fr) | 2003-01-16 | 2004-08-05 | The Trustees Of The University Of Pennsylvania | Compositions et procedes destines a l'inhibition du gene icam-1 par arn a faible inhibition |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997003677A1 (fr) * | 1995-07-24 | 1997-02-06 | Trustees Of Boston University | Inhibition de l'activite des recepteurs du n-methyl-d-aspartate au moyen de derives de sulfate de pregnenolone |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5134141A (en) * | 1991-09-06 | 1992-07-28 | American Home Products Corporation | Antidepressant polycyclic imides to treat depression |
-
1998
- 1998-11-20 FR FR9814669A patent/FR2786102B1/fr not_active Expired - Fee Related
-
1999
- 1999-11-19 AU AU12775/00A patent/AU1277500A/en not_active Abandoned
- 1999-11-19 EP EP99956092A patent/EP1131074A1/fr not_active Ceased
- 1999-11-19 WO PCT/FR1999/002848 patent/WO2000030652A1/fr not_active Application Discontinuation
- 1999-11-19 CA CA002351980A patent/CA2351980A1/fr not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997003677A1 (fr) * | 1995-07-24 | 1997-02-06 | Trustees Of Boston University | Inhibition de l'activite des recepteurs du n-methyl-d-aspartate au moyen de derives de sulfate de pregnenolone |
Non-Patent Citations (2)
Title |
---|
KIMONIDES ET AL: "dehydroepiandrosterone (DHEA) and DHEA-sulfate protect hippocampal neurons against excitatory amino acid-induced neurotoxicity", PROC NATL ACAD SCI USA, vol. 95, no. 4, 17 February 1998 (1998-02-17), pages 1852 - 1857, XP002112868 * |
MAURICE ET AL: "DHEAS attenuates dizocilpine-induced learning impairment in mice via sIgma-1-receptors", BEHAV BRAIN RES, vol. 83, no. 1/2, 1997, pages 159 - 164, XP002112869 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002000225A1 (fr) * | 2000-06-29 | 2002-01-03 | Hunter-Fleming Limited | 7-hydroepiandrosterone presentant une activite neuroprotectrice |
JP2004501196A (ja) * | 2000-06-29 | 2004-01-15 | ハンター−フレミング・リミテッド | 神経保護活性を有する7−ヒドロキシエピアンドロステロン |
AU2001267709B2 (en) * | 2000-06-29 | 2005-07-28 | Hunter-Fleming Limited | 7-hydroxyepiandrosterone having neuroprotective activity |
CN100459980C (zh) * | 2000-06-29 | 2009-02-11 | 亨特-弗莱明有限公司 | 具有神经保护作用的7-羟基表雄酮 |
US7718639B2 (en) | 2000-06-29 | 2010-05-18 | Hunter-Fleming Limited | 7-hydroxyepiandrosterone having neuroprotective activity |
JP4942905B2 (ja) * | 2000-06-29 | 2012-05-30 | ハンター−フレミング・リミテッド | 神経保護活性を有する7−ヒドロキシエピアンドロステロン |
Also Published As
Publication number | Publication date |
---|---|
CA2351980A1 (fr) | 2000-06-02 |
FR2786102B1 (fr) | 2001-02-16 |
AU1277500A (en) | 2000-06-13 |
FR2786102A1 (fr) | 2000-05-26 |
EP1131074A1 (fr) | 2001-09-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
McGINNIS et al. | Evidence for a role of testosterone-androgen receptor interactions in mediating masculine sexual behavior in male rats | |
Osran et al. | Adrenal androgens and cortisol in major depression | |
Yen et al. | Aging and the adrenal cortex | |
Buvat | Androgen therapy with dehydroepiandrosterone | |
Touitou et al. | Age-and sex-associated modification of plasma melatonin concentrations in man. Relationship to pathology, malignant or not, and autopsy findings | |
BOOTH | Sexual behaviour of neonatally castrated rats injected during infancy with oestrogen and dihydrotestosterone | |
AU756818B2 (en) | Glucocorticoid receptor antagonists for the treatment of dementia | |
ES2613666T3 (es) | Uso de un inhibidor de aromatasa para el tratamiento del hipogonadismo y enfermedades relacionadas | |
Etgen et al. | Metabolic and endocrine factors in mild cognitive impairment | |
EP0918525A1 (fr) | Utilisation de mifepristone pour le traitement des psychoses et des comportements addictifs | |
AU778090B2 (en) | Methods for treating mild cognitive impairment | |
Clayton et al. | Pathophysiology and medical management of hypoactive sexual desire disorder | |
Rapkin et al. | Oral contraceptives and neuroactive steroids | |
Parrott | Effects of 17β-hydroxy-4-androsten-19-ol-3-one (19-hydroxytestosterone) and 5α-androstan-17β-ol-3-one (dihydrotestosterone) on aspects of sexual behaviour in castrated male rats | |
Pluchino et al. | One-year therapy with 10 mg/day DHEA alone or in combination with HRT in postmenopausal women: effects on hormonal milieu | |
JPH07508717A (ja) | テストステロンの濃度を上昇させる薬剤 | |
Tait et al. | Neuroactive steroid changes in response to challenge with the panicogenic agent pentagastrin | |
Oettel | The endocrine pharmacology of testosterone therapy in men | |
WO2000030652A1 (fr) | Utilisation du sulfate de dehydroepiandrosterone pour augmenter le nombre de recepteurs nmda chez un mammifere | |
US6645954B2 (en) | Compositions comprising ethisterone or its derivatives | |
Czarnecka et al. | The effect of hormone replacement therapy on endothelial function in postmenopausal women with hypertension | |
US20030225049A1 (en) | Method of treatment for increasing the number of NMDA receptors in a mammalian brain | |
AU759767B2 (en) | Compositions comprising ethisterone or its derivatives | |
AU2002303652B2 (en) | Methods for treating delirium using glucocorticoid receptor-specific antagonists | |
EP3445371B1 (fr) | Hormones steroidiennes pour le traitement et la prevention des torsades de pointes |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref country code: AU Ref document number: 2000 12775 Kind code of ref document: A Format of ref document f/p: F |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
ENP | Entry into the national phase |
Ref document number: 2351980 Country of ref document: CA Ref country code: CA Ref document number: 2351980 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1999956092 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1999956092 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09856261 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWR | Wipo information: refused in national office |
Ref document number: 1999956092 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1999956092 Country of ref document: EP |