WO1998010650A1 - Method of treating endothelial injury - Google Patents
Method of treating endothelial injury Download PDFInfo
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- WO1998010650A1 WO1998010650A1 PCT/US1997/015966 US9715966W WO9810650A1 WO 1998010650 A1 WO1998010650 A1 WO 1998010650A1 US 9715966 W US9715966 W US 9715966W WO 9810650 A1 WO9810650 A1 WO 9810650A1
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- endothelial
- chemotherapeutic agent
- epo
- erythropoietin
- cisplatin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- A61K38/18—Growth factors; Growth regulators
- A61K38/1816—Erythropoietin [EPO]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/02—Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
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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]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
- A61P35/04—Antineoplastic agents specific for metastasis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- 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
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
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- 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
- A61P9/14—Vasoprotectives; Antihaemorrhoidals; Drugs for varicose therapy; Capillary stabilisers
Definitions
- the present invention relates to the use of human erythropoietin (EPO) in the prevention or treatment of endothelial injury due to chemotherapy, radiation therapy, mechanical trauma, or to a disease state which damages the endothelium (such as inflammation, heart disease or cancer) .
- EPO human erythropoietin
- the present invention further relates to the use of EPO in conjunction with chemotherapy.
- Erythropoietin is a glycoprotein produced in the kidney, and is the principal hormone responsible for stimulating red blood cell production (erythrogenesis) . EPO stimulates the division and differentiation of committed erythroid progenitors in the bone marrow. Normal plasma erythropoietin levels range from 0.01 to 0.03 Units/mL, and can increase up to 100 to 1, 000-fold during hypoxia or anemia. Graber and Krantz, .Ann . Rev. Med. 29:51 (1978); Eschbach and Adamson, Kidney Intl . 28:1 (1985). Recombinant human erythropoietin
- Epogen ® (Amgen Inc., Thousand Oaks, CA) and as Procrit ®
- EPO is indicated for treatment of anemia, including anemias associated with cancer chemotherapy, chronic renal failure, malignancies, adult and juvenile rheumatoid arthritis, disorders of haemoglobin synthesis, prematurity, and zidovudine treatment of HIV infection.
- the vascular endothelium is a layer of cells lining the inner vascular wall and in direct contact with blood, providing an active natural barrier between the circulatory and extravascular compartment.
- the endothelium is involved in signal and information transfer at the cellular, tissue and organ level, and plays a role in both cell -mediated and humoral immune responses.
- Endothelial cells are metabolically active and normally produce a number of substances with effects on the vascular lumen and on platelets.
- Endothelial vasodilators include prostacyclin (PGI 2 ) and endothelium- derived relaxing factor (EDRF, which may be nitric oxide or a more stable adduct thereof) ; these two substances also act to inhibit platelet aggregation.
- Oxidative damage or destruction of the endothelium by physical trauma or disease processes may impair EDRF production, contributing to vasoconstriction. More diffuse and subtle endothelial damage, such as due to chronic hypertension or reperfusion after ischemia, also leads to altered EDRF production.
- Endothelial products localized to the lu inal endothelial surface include ectoADPase and thro bomodulin .
- Vasoconstrictors released by the endothelium include endothelin. Endothelial cells also secrete growth factors which enhance endothelial mitogenesis and can induce new blood vessel formation (angiogenesis) .
- GM-CSF granulocyte acrophage-colony stimulating factor
- G-CSF granulocyte-colony stimulating factor
- Interleukin-3 (IL-3) also enhances the proliferation of these cells. See Bussolino et al . , Wature
- a first aspect of the present invention is a method of reducing endothelial injury caused by a chemotherapeutic agent, by administering an endothelial- protecting amount of erythropoietin in conjunction with the administration of the chemotherapeutic agent.
- the endothelial-protecting amount of erythropoietin may be administered simultaneously with the chemotherapeutic agent, prior to the chemotherapeutic agent, or after the chemotherapeutic agent.
- a second aspect of the present invention is a method of enhancing endothelial cell inhibition in a subject treated with a chemotherapeutic agent, by administering an endothelial-inhibiting amount of erythropoietin in conjunction with the chemotherapeutic agent.
- the endothelial-inhibiting amount of erythropoietin may be administered simultaneously with, prior to, or after the chemotherapeutic agent.
- a further aspect of the present invention is a method of treating a solid vascularized tumor by administering an antineoplastic chemotherapeutic agent in conjunction with an endothelial-inhibiting amount of erythropoietin.
- the endothelial -inhibiting amount of erythropoietin may be administered simultaneously with, prior to, or after the chemotherapeutic agent.
- a further aspect of the present invention is a method of treating endothelial injury caused by mechanical damage, exposure to radiation, inflammation, heart disease or cancer by administering an endothelial- protecting amount of erythropoietin to a subject in need of such treatment.
- Figure 1 is a graph showing the dose-response curve for viability of endothelial cells after exposure to cisplatin.
- Figure 2 is a graph showing the responses of endothelial cell cultures exposed simultaneously to cisplatin and varying dosages of EPO, compared to control endothelial cell cultures exposed only to cisplatin.
- Figure 3 is a graph showing the responses of endothelial cell cultures exposed first to cisplatin and, two hours later, to varying dosages of EPO (compared to control endothelial cell cultures exposed only to cisplatin) .
- Figure 4 is a graph showing the responses of endothelial cell cultures exposed first to varying dosages of EPO and, two hours later, to cisplatin
- EPO erythropoietin
- EPO can effectively prevent and/or repair endothelial damage caused by chemotherapeutic agents.
- administration of EPO concomitantly with chemotherapeutic agents produces a biphasic response: certain doses of EPO protect endothelial cells from the deleterious effects of the chemotherapeutic agent, while increased doses enhance the endothelial growth- suppression caused by the chemotherapeutic agent.
- EPO EPO to enhance endothelial growth- suppression during chemotherapy is useful in treating angiogenic tumors, where it is desirable to prevent or slow the formation of new blood vessels which support tumor growth.
- Tumors require an adequate blood supply, and growth of new vessels in the tumor mass is stimulated by angiogenic factors secreted by tumor tissue.
- inhibition of angiogenesis in tumor tissue has been shown to cause tumor regression.
- Highly vascularized solid tumors include cerebellar hemangioblastoma, ductal carcinoma of the breast, and squamous cell cancer of the larynx.
- Abnormal angiogenesis is involved in additional pathological conditions, including diabetic retinopathy, neovascular glaucoma, rheumatoid arthritis, and psoriasis.
- the ability of EPO to reduce or prevent abnormal angiogenesis will be of use in preventing or reducing angiogenesis associated with such disease states.
- One method according to the present invention is the use of EPO as an adjunct in the chemotherapy of neoplastic disease.
- EPO is provided in endothelial- protecting amounts where protection of the endothelium from the adverse effects of chemotherapeutic agents is desired.
- a second method according to the present invention is the use of EPO as an adjunct in the chemotherapy of neoplastic disease, where enhancement of the adverse effects of chemotherapeutic agents on endothelium (e.g., enhancement of endothelial growth suppression) is desired. In such situations, EPO is provided in endothelial-inhibiting amounts.
- endothelial-protecting amounts of EPO refer to those dosages which reduce or prevent the suppression of endothelial growth which would otherwise occur due to exposure to a chemotherapeutic agent or radiation, mechanical trauma, or a disease state known to - 6 -
- an endothelial- protecting amount of EPO may be defined as those dosages which increase the numbers of viable endothelial cells following exposure to the chemotherapeutic agent or radiation, mechanical trauma, or a disease state known to damage the endothelium; the increased number of viable cells is in comparison to that which would be expected in the absence of EPO.
- the most effective endothelial - protecting amounts of EPO may vary depending upon the time of administration and the etiology of endothelial damage .
- endothelial damage is due to exposure to a chemotherapeutic agent
- the most effective endothelial- protecting amounts of EPO will vary depending upon whether EPO is administered simultaneously with, prior to, or after, the chemotherapeutic agent, and may vary depending upon the specific chemotherapeutic agent in question.
- endothelial-inhibiting amounts of EPO refer to those dosages which enhance or increase the suppression of endothelial growth which would otherwise occur due to exposure to a chemotherapeutic agent or radiation, mechanical trauma, or a disease state known to damage the endothelium.
- an endothelial -inhibiting amount of EPO may be defined as those dosages which decrease the numbers of viable endothelial cells following exposure to the chemotherapeutic agent or radiation, mechanical trauma, or a disease state known to damage the endothelium; the decreased number of viable cells is in comparison to that which would be expected in the absence of EPO.
- the most effective endothelial- inhibiting amounts of EPO may vary depending upon the time of administration and the etiology of endothelial damage. Where endothelial damage is due to exposure to a chemotherapeutic agent, the most effective inhibiting amounts of EPO will vary depending upon whether EPO is administered simultaneously with, prior to, or after, the chemotherapeutic agent, and may vary depending upon the specific chemotherapeutic agent in question.
- Endothelial damage may be assessed by a reduction in the proliferation of endothelial cells and/or decreased numbers of viable endothelial cells, leading to a total decrease in the number of viable endothelial cells. Such a decrease in the number of viable endothelial cells may also be referred to as endothelial growth suppression, or endothelial cell suppression or inhibition.
- a method of reducing endothelial injury in a subject caused by administration of a chemotherapeutic agent to the subject refers to a method which reduces or prevents the decrease in viable endothelial cells which would otherwise be caused by administration of the chemotherapeutic agent.
- a method of enhancing endothelial cell inhibition in a subject caused by administration of a chemotherapeutic agent to the subject refers to a method which increases or enhances the reduction in viable endothelial cells which would otherwise be caused by administration of the chemotherapeutic agent.
- Damage to endothelial cells may also be caused by radiation therapy, mechanical trauma, and by disease states such as inflammation, heart disease (e.g., atherosclerosis) and cancer.
- atherosclerosis for example, injury to or dysfunction of the endothelium leads to reduced vasodilator response and to increased platelet deposition on the arterial wall.
- Serotonin and thromboxane A 2 released from deposited platelets cause arterial constriction and spasm, increase adhesion and aggregation of platelets, and enhance the atherosclerotic process.
- the consequences of coronary obstruction are often ameliorated by the formation of new coronary vessels in response to angiogenic stimuli.
- human erythropoietin refers to both the naturally occurring human erythropoietin glycoprotein as well as recombinant human erythropoietin (rHuEpo or epoetin alfa, available commercially as Epogen ® (Amgen Inc., Thousand Oaks, CA) and as Procrit ® (Ortho Biotech Inc., Raritan, NJ) ) .-'.
- Peptide analogs of EPO may also be used in the methods of the present invention.
- peptide analogs are those compounds which, while not having a ino acid sequences identical to that of EPO, have a similar three- dimensional structure. In protein molecules which interact with a receptor, the interaction takes place at the surface-accessible sites in a stable three- dimensional molecule. By arranging the critical binding site residues in an appropriate conformation, peptides which mimic the essential surface features of EPO binding region may be designed and synthesized in accordance with known techniques. A molecule which has a surface region with essentially the same molecular topology to the binding surface of EPO will be able to mimic the interaction of EPO with the EPO receptor.
- EPO receptor peptides with sequences dissimilar to that of EPO may be utilized in the methods of the present invention, where such peptides mimic the biological activity of EPO.
- Wrighton et al . report the identification and characterization of small peptides that bind to and activate the erythropoietin receptor on the surface of target cells, although the peptides' sequences are not similar to the primary sequence of EPO
- peptide agonists are represented by a 14-amino acid disulfide-bonded cyclic peptide with an identified minimum consensus sequence.
- the structure of a complex of one such peptide mimetic with the erythropoietin receptor is described by Livnah et al . , Science 273:464
- chemotherapeutic agent refers to cytotoxic antineoplastic agents, that is, chemical agents which preferentially kill neoplastic cells or disrupt the cell cycle of rapidly proliferating cells, used therapeutically to prevent or reduce the growth of neoplastic cells.
- Chemotherapeutic agents are also known as antineoplastic drugs or cytotoxic agents, and are well known in the art.
- chemotherapy includes treatment with a single chemotherapeutic agent or with a combination of agents. In a subject in need of treatment, chemotherapy may be combined with surgical treatment or radiation therapy, or with other antineoplastic treatment modalities.
- chemotherapeutic agents are vinca alkaloids, epipodophyllotoxins , anthracycline antibiotics, actinomycin D, plicamycin, puromycin, gramicidin D, paclitaxel (Taxol ® , Bristol Myers Squibb) , ⁇ ⁇ colchicine, cytochalasin B, emetine, maytansine, and amsacrine (or "mAMSA”).
- the vinca alkaloid class is described in Goodman and Gilman's The Phar average ⁇ ical Basis of Therapeutics, " 1277-1280 (7th ed. 1985) (hereafter "Goodman and Gilman") .
- Exemplary of vinca alkaloids are vincristine, vinblastine, and vindesine.
- the epipodophyllotoxin class is described in Goodman and Gilman, supra at 1280-1281.
- Exemplary of epipodophyllotoxins are etoposide, etoposide orthoquinone , and teniposide.
- the anthracycline antibiotic class is described in Goodman and Gilman, supra at 1283-1285.
- Exemplary of anthracycline antibiotics are daunorubicin, doxorubicin, mitoxantraone, and bisanthrene .
- Actinomycin D also called Dactino ycin, is described in Goodman and Gilman, supra at 1281-1283.
- Plicamycin also called mithramycin, is described in Goodman and Gilman, supra at 1287-1288. Additional chemotherapeutic agents include cisplatin (Platinol ® , Bristol Myers Squibb) ; carboplatin (Paraplatin®, Bristol Myers Squibb) ; mitomycin (Mutamycin ® , Bristol Myers Squibb) ; altretamine (Hexalen ® , U.S.
- chemotherapeutic agents may be administered, for example, by injection (intravenously, intramuscularly, intraperitoneally, subcutaneously, intratumor, intrapleural) or orally.
- injection intravenously, intramuscularly, intraperitoneally, subcutaneously, intratumor, intrapleural
- administration of a compound "in conjunction with" a second compound means that the two compounds are administered closely enough in time that the presence of one alters the biological effects of the other.
- the two compounds may be administered simultaneously (concurrently) or sequentially. Simultaneous administration may be carried out by mixing the compounds prior to administration, or - 11 -
- Subjects to be treated by the method of the present invention include both human and animal (e.g., dog, cat, cow, horse) subjects, and are preferably mammalian subjects.
- Neoplasms which are the most susceptible to chemotherapy are those with a high percentage of cells in the process of division, including but not limited to breast, liver, brain, lung, and ovarian cancer.
- Highly vascularized solid tumors are amenable to treatment with endothelial-inhibiting amounts of EPO in conjunction with chemotherapeutic agents, as these tumors rely on angiogenesis to provide adequate blood supply to the growing tumor tissue.
- EPO used according to the methods of the present invention may be administered by any suitable means, as would be apparent to one skilled in the art.
- EPO may be administered systemically (e.g., intravenously) or locally (e.g., injected into a tumor, tissues immediately surrounding a- tumor, or into an anatomic compartment containing a tumor) .
- the EPO may be administered locally to a tumor (or the immediately - 12 -
- an endothelial - protecting amount of EPO may be administered systemically by intravenous injection.
- EPO EPO
- the dosage and timing of EPO administration used in conjunction with a chemotherapeutic agent will similarly depend upon the desired effect.
- the present inventors have discovered that depending upon the timing of EPO administration (simultaneous with, before, or after chemotherapeutic agent administration) and the dosage of EPO, EPO either protects the endothelium from the growth-inhibiting effects of chemotherapeutic agents, or enhances the endothelial growth inhibition seen with chemotherapeutic agents. It will be apparent to those skilled in the art how to determine, by routine experimentation, the dosage and timing of EPO administration in conjunction with a particular chemotherapeutic agent to achieve a desired effect. The maximum amount of EPO that can be administered in single or multiple doses has not been
- EPO is administered in an endothelial -protecting amount. Suitable endothelial-protecting dosages may range from about 100 U/kg to about 200 U/kg. In the present methods, where it is desired to enhance the endothelial damage and/or endothelial growth suppression caused by a chemotherapeutic agent, EPO is administered in an endothelial-inhibiting amount which may range from about 750 U/kg to about 2,000 U/kg.
- EPO administration used in conjunction with a chemotherapeutic agent will depend upon the desired effect, as well as the chemotherapeutic agent utilized.
- the following examples are provided to illustrate the present invention, and should not be construed as limiting thereof.
- HUVECs Human umbilical vein endothelial cells
- T-flasks Corning Inc., Corning, NY
- porcine skin gelatin Sigma Chemical Co., St. Louis, MO
- MTS is bioreduced into a formazan by dehydrogenase enzymes found in metabolically active cells.
- the amount of formazan is measured at 490 nm absorbance and is directly proportional to the numbers of living cells in culture.
- EPO and/or the chemotherapeutic agent were added at concentrations and in the order specified in the examples described below. Plates were then incubated for another 24 hours. At the end of this incubation period, 20 ⁇ l of freshly prepared combined MTS/PMS (20:1 ratio) solution was added into each well and the plates were incubated for 1-4 more hours, as per manufacturer's recommendations. The absorbance of each well at 490 nm was recorded using an ELISA plate reader. The LD50 and the effect of the various treatments on cell viability and chemosensitivity were determined by plotting the corrected absorbance at 490 nm versus the concentration of the additive (EPO, chemotherapeutic agent, or combinations thereof ) .
- Stat ist ical Cons iderat ions were performed in triplicate. All other experiments were performed at least five times. Results were averaged and means ⁇ SD reported. Controls for all experiments included one to two triplicate wells treated with each of the following: 1) 1 ⁇ g/ml cisplatin; - 15 -
- the corrected absorbance at 490 n versus the concentration of cisplatin ( ⁇ g/mL) was plotted ( Figure 1) to provide a dose-response curve.
- the concentration of cisplatin required to give 50% of the maximal response (LD50 of cisplatin) was determined to be 0.45 ⁇ g/ml.
- a dosage of 1 ⁇ g/ml of cisplatin was used to determine the effects of EPO on endothelial cells, as provided in the following examples.
- EXAMPLE 3 Effects of Simultaneous Cisplatin and EPO on Endothelial Cells To determine the effects of combined EPO and cisplatin on endothelial cells, serial dilutions of EPO - 16 -
- Endothelial cell cultures were prepared as described in Example 1. Cisplatin (final concentration of 1 ⁇ g/ml) was added to each test well simultaneously with 5 ⁇ l of various EPO preparations (final EPO concentration ranging from 0.15 to 20 U/ml . Endothelial cell viability was assessed using the MTS/PMS colorimetric assay described in Example 1. Results were compared to control wells (endothelial cells treated with 1 ⁇ g/ml cisplatin alone, considered as the baseline and represented in Figure 2 as 0%) .
- Results are provided in Figure 2; the "% of control” is the percentage change of optical density at 490 nm over the control, such that "0%” indicates the test well had similar numbers of metabolically active cells as the control, whereas “50%” indicates 50% more and “-50%” indicates 50% fewer metabolically active cells.
- Endothelial cell cultures were prepared as described in Example 1. Cisplatin was added to each test well (1 ⁇ g/ml final concentration of cisplatin) ,- two hours later 5 ⁇ l of an EPO preparation ranging from 0.15 to 20 U/ml final concentration was added. Endothelial cell viability was assessed using the MTS/PMS colorimetric assay described in Example 1. Results were compared to control wells (endothelial cells treated with l ⁇ g/ml cisplatin alone) .
- Results are provided in Figure 3, and show that a biphasic response was observed when EPO was added to cell cultures after the addition of cisplatin. Endothelial cell cultures treated with from 0.15 to 5 U/ml of EPO were protected from the damaging effects of cisplatin when EPO was added two hours following cisplatin exposure. The number of viable cells after treatment with 1.25 U/ml EPO after cisplatin exposure was 34% greater than that of controls. In contrast, cell viability in the presence of 10 to 20 U/ml EPO administered two hours after cisplatin exposure was reduced over that seen in controls (cisplatin only) .
- Results are provided in Figure 4, and show a reduction in the number of viable endothelial cells after exposure to EPO two hours prior to cisplatin exposure (compared to control cells exposed only to cisplatin) .
- Cell proliferation and viability was decreased by as much as 81% compared to controls.
- the inhibition was dose dependent; EPO concentrations as low as 5 and 2.5 U/ml reduced cell growth by 58% and 48%, respectively, compared to controls .
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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DE69731652T DE69731652T2 (en) | 1996-09-11 | 1997-09-10 | METHOD FOR TREATING ENDOTHELIAL INJURIES |
EP97940974A EP0933995B8 (en) | 1996-09-11 | 1997-09-10 | Method of treating endothelial injury |
CA002265547A CA2265547C (en) | 1996-09-11 | 1997-09-10 | Method of treating endothelial injury |
JP10513794A JP2001503028A (en) | 1996-09-11 | 1997-09-10 | How to treat endothelial damage |
AT97940974T ATE282425T1 (en) | 1996-09-11 | 1997-09-10 | METHOD FOR TREATING ENDOTHELIAL INJURIES |
HK00101826A HK1022810A1 (en) | 1996-09-11 | 2000-03-23 | Method of treating endothelial injury |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US08/712,358 | 1996-09-11 | ||
US08/712,358 US20020052309A1 (en) | 1996-09-11 | 1996-09-11 | Method of treating endothelial injury |
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WO1998010650A1 true WO1998010650A1 (en) | 1998-03-19 |
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US (5) | US20020052309A1 (en) |
EP (1) | EP0933995B8 (en) |
JP (3) | JP2001503028A (en) |
CN (2) | CN1113669C (en) |
AT (1) | ATE282425T1 (en) |
CA (1) | CA2265547C (en) |
DE (1) | DE69731652T2 (en) |
DK (1) | DK0933995T3 (en) |
ES (1) | ES2231889T3 (en) |
HK (1) | HK1022810A1 (en) |
PT (1) | PT933995E (en) |
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Also Published As
Publication number | Publication date |
---|---|
ATE282425T1 (en) | 2004-12-15 |
US20090285908A1 (en) | 2009-11-19 |
DE69731652T2 (en) | 2005-12-15 |
CA2265547A1 (en) | 1998-03-19 |
US7803408B2 (en) | 2010-09-28 |
CN1250281C (en) | 2006-04-12 |
EP0933995A1 (en) | 1999-08-11 |
US20080124401A1 (en) | 2008-05-29 |
EP0933995A4 (en) | 2002-08-28 |
HK1022810A1 (en) | 2000-08-25 |
PT933995E (en) | 2005-02-28 |
CN1113669C (en) | 2003-07-09 |
US7531501B1 (en) | 2009-05-12 |
JP2009196999A (en) | 2009-09-03 |
JP2001503028A (en) | 2001-03-06 |
US5922674A (en) | 1999-07-13 |
EP0933995B8 (en) | 2005-01-19 |
JP2008133305A (en) | 2008-06-12 |
CA2265547C (en) | 2009-12-01 |
US20020052309A1 (en) | 2002-05-02 |
DK0933995T3 (en) | 2005-02-14 |
DE69731652D1 (en) | 2004-12-23 |
ES2231889T3 (en) | 2005-05-16 |
CN1235512A (en) | 1999-11-17 |
EP0933995B1 (en) | 2004-11-17 |
CN1429623A (en) | 2003-07-16 |
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