WO1991004054A1 - Treatment of ards - Google Patents
Treatment of ards Download PDFInfo
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- WO1991004054A1 WO1991004054A1 PCT/GB1990/001443 GB9001443W WO9104054A1 WO 1991004054 A1 WO1991004054 A1 WO 1991004054A1 GB 9001443 W GB9001443 W GB 9001443W WO 9104054 A1 WO9104054 A1 WO 9104054A1
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- tnf
- ards
- septic
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- antibody
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- 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
- A61K9/007—Pulmonary tract; Aromatherapy
- A61K9/0073—Sprays or powders for inhalation; Aerolised or nebulised preparations generated by other means than thermal energy
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/24—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against cytokines, lymphokines or interferons
- C07K16/241—Tumor Necrosis Factors
-
- 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 the treatment of adult respiratory distress syndrome (ARDS), a medicament for the treatment of ARDS, and to the manufacture of such a medicament.
- ARDS adult respiratory distress syndrome
- ARDS is a descriptive term which is applied to a variety of acute, diffuse, lung lesions which, while having differing aetiologies, have similar pathology and clinical characteristics (16). Increase in respiratory frequency, decrease in tidal volume and in lung compliance and deterioration in gas exchange are all symptomatic of the syndrome and result in arterial hypoxaemia.
- ARDS is associated with septicaemia (septic-ARDS) and mortality of sepsis in patients with ARDS is greater than 80%(5).
- septic-ARDS septic-ARDS
- mortality of sepsis in patients with ARDS is greater than 80%(5).
- ARDS is not, invariably, associated with the symptoms of sepsis.
- the lipopolysaccharide (LPS) component of the cell wall of Gram-negative bacteria acts as a potent macrophage activator and induces the synthesis and secretion of biologically active molecules including cytokines.
- cytokines include tumour necrosis factor- ⁇ (TNF)
- TNF tumour necrosis factor- ⁇
- platelet activating factor * interleukin-8
- prostaglandins and other cytokines which mediate inflammatory and acute phase responses (11).
- TNF has been postulated to have an important pathophysiological role in a number of clinical situations including septic shock and malignant disease (1-4) .
- the present applicant has determined the levels of TNF present in the bronchopulmonary secretions of the lung in patients with ARDS but showing no overt indication of sepsis at the time of sampling the secretions. Surprisingly, high levels of intrapulmonary TNF were found in these patients.
- an antibody to TNF- ⁇ in the manufacture of a medicament for the treatment of or prevention of non-septic ARDS.
- non-septic ARDS is meant ARDS which is not associated with overt sepsis at the time of diagnosis and/or treatment.
- the medicament is for treatment of ARDS which is not associated with overt sepsis either at the time of diagnosis or of treatment.
- overt sepsis The characteristics of overt sepsis are well known to the clinician.
- a patient with overt sepsis may have a temperature below 36°C or above 38.5°C together with an abnormal white blood cell count of say below 3 x 10- • -'cells/L or above 9 x 10- ⁇ /L. Furthermore, there is generally a suspected source of infection.
- a method of treatment of a human or animal subject suffering from or at risk from non-septic ARDS comprising administering an effective amount of an anti-TNF antibody.
- Examples of conditions and situations which may lead to non-septic adult respiratory distress syndrome, or in conjunction with which non-septic ARDS may occur, and where a medicament manufactured according to the method of the present invention may be of utility include: diffuse pulmonary infections, such as viral, bacterial or fungal infections or protozoal infections such as pneumoc ⁇ stis; aspiration of liquid; inhalation of toxins and irritants; drug overdose; cardiopulmonary bypass; immunological responses to host or other antigens, for example as occurs in Goodpasture's syndrome or systemic
- the anti-TNF antibody for use according to the invention may, in general, belong to any immunoglobulin class or subclass.
- the anti-TNF antibody may be an immunoglobulin G or immunoglobulin M antibody.
- the anti-TNF may be of animal, for example mammalian, origin and may be, for example, of murine, rat, hamster or human origin.
- the antibody may be a whole immunoglobulin, or a fragment thereof, for example a F(ab')2, Fab or Fv fragment.
- the anti-TNF antibody may be polyspecific but is preferably monospecific for human TNF- ⁇ .
- the antibody may be a polyclonal antiserum or a monoclonal antibody.
- Particularly useful antibodies for use according to the invention include recombinant anti-TNF antibodies, i.e. anti-TNF antibodies which have been produced using recombinant DNA techniques.
- Especially useful antibodies of this type are antibodies having an antigen binding site at least part of which is derived from an immunoglobulin from a non-human species, the remainder of the molecule being derived from a human immunoglobulin.
- the anti-TNF antibody may be prepared using well-known immunological techniques employing TNF- ⁇ as antigen.
- any suitable host may be injected with TNF- ⁇ and the serum collected to yield the desired polyclonal anti-TNF antibody after appropriate purification and/or concentration, (for example by affinity chromatography using immobilised TNF- ⁇ as the affinity medium) .
- splenocytes or lymphocytes may be recovered from the TNF- ⁇ -injected host and immortalised using for example the method of Kohler et al., Eur. J. Immunol. j5, 511, (1976), the resulting cells being segregated to obtain a single genetic line producing monoclonal anti-TNF ⁇ antibodies in accordance with conventional practice.
- Antibody fragments may be produced using conventional techniques, for example by enzymatic digestion e.g. with pepsin [Parham, J. Immunol., 131, 2895, (1983)] or papain [Lamoyi and Nisonoff, J. Immunol. Meth., 5J5, 235, (1983)]. Where it is desired to produce recombinant anti-TNF ⁇ antibodies these may be produced using for example the methods described in European Patent Specifications Nos. 171496, 173494, 194276 and 239400.
- anti-TNF antibody may, in general, be administered in any appropriate form.
- anti-TNF may be administered intravenously together with a pharmaceutically acceptable carrier, excipient or diluent.
- a pharmaceutically acceptable carrier excipient or diluent.
- Such a composition may be in a form suitable for bolus injection or continuous infusion.
- Compositions for injection may take such forms as suspensions, solutions or emulsions of anti-TNF in oily or aqueous vehicles, and may contain formulatory agents such as suspending, stabilising and/or dispersing agents.
- the antibody may also, suitably, be administered locally to the lungs by instillation or as a dispersion or aerosol, for example in nebulised form or as liposomes.
- the invention also provides, according to a further aspect, a pharmaceutical composition for the treatment of ARDS the composition comprising anti-TNF and a pharmaceutically acceptable carrier, excipient or diluent the composition being
- SUBSTITUTE SHEET arranged for administration as an aerosol.
- Use of anti-TNF in the manufacture of such a pharmaceutical composition is provided according to a still further aspect of the invention.
- Such a composition is suitable for the therapy of patients with either septic or non-septic ARDS.
- an aerosol comprising anti-TNF and a pharmaceutically acceptable excipient, diluent or carrier.
- the aerosol may be produced by means of a nasal spray containing a pharmaceutical composition comprising anti-TNF and a pharmaceutically acceptable excipient, diluent and carrier; and further having means for aerosolising the pharmaceutical composition.
- compositions for the treatment of ARDS may contain, in addition to anti-TNF antibody further active ingredients.
- compositions may be used to treat an existing condition or, alternatively, may be used prophylactically to prevent development of ARDS in patients who may be particularly susceptible to the syndrome e.g. those who have had cardiopulmonary bypass surgery.
- the dose at which the anti-TNF antibody will be administered will depend on the nature and severity of the condition. Local concentrations of TNF may be measured and a suitable dose of anti-TNF then selected by the physician. In general, the total dose of anti-TNF will be not less than 0.1 mg/kg per day and will not exceed 80 mg/kg per day. Where the antibody is administered by infusion a dose in the range 0.1 - 20 mg/kg may be administered one to four times a day. For example a single infusion of about 10 mg/kg is suitable .
- Example 1 patients suffering from ARDS but who were not overtly septic at the time of examination were shown to have elevated levels of TNF in bronchoalveolar lavages.
- Example 2 TNF was employed in an animal model and shown to result in pulmonary damage.
- Example 3 TNF production by the blood cells of patients who had undergone cardiopulmonary bypass was investigated. Such patients are particularly susceptible to a non-septic ARDS-like syndrome.
- tumour necrosis factor (TNF) was present within the bronchopulmonary secretions of patients with adult respiratory distress syndrome (ARDS).
- ARDS adult respiratory distress syndrome
- ARDS adult respiratory distress syndrome
- Control samples were obtained in an identical manner from twenty-four patients undergoing bronchoscopy of whom eight had tuberculosis, six had sarcoidosis and ten had no abnormal findings.
- the aspirated fluid was assayed for the presence of TNF using an enzyme linked immunoabsorbance technique (ELISA) .
- ELISA enzyme linked immunoabsorbance technique
- TNF levels of greater than 500 u/ml (12.5 ng/ml) were detected from the five patients with ARDS, whereas in the control samples no TNF was detected.
- the subjects were 5 adult patients requiring intensive care and mechanical ventilation for respiratory failure. All the patients had ARDS as defined by Ashbaugh (7) . They all had an accepted risk factor, an arterial oxygen tension (kPa) to inspired oxygen tension ratio of greater than 20, bilateral widespread pulmonary infiltrates on chest radiographs and pulmonary calpillary wedge pressures of less than 15mmHg. Their mean age was 56 + 9 yr.
- the conditions leading to admission of the patients to ITU were as follows, severe burns and smoke inhalation, ureteric rupture, faecal peritonitis, pancreatitis, and massive blood transfusion. At the time of the study none of the patients had been overtly septic for at least 48hr i.e.
- control specimens were from 24 patients undergoing bronchoscopy as part of their clinical assessment. Six of them had tuberculosis, 5 had sarcoidosis and 10 were being investigated for haemotysis but had normal bronchochoscopies and negative microbiological and cytological samples. Their mean age was 65 + 13 yr.
- the mean level of TNF detected in the patients with ARDS was 523 + 186 u/ml (13.1 + 4.6 ng/ml) (Table 1).
- no TNF was detected in either the bronchopulmonary secretions nor the BAL fluid of the control subjects.
- the small airway tissue showed marked signs of alveolar inflammation with microcirculatory congestion, interstitial thickening and infiltration of inflammatory leucocytes.
- CB6 (lOmg/kg i.v.) 30 min before TNF challenge, there were no respiratory changes and the histology of the lungs did not differ from the lungs of a control group of animals injected with saline instead of TNF.
Abstract
Patients experiencing adult respiratory distress syndrome (ARDS) have elevated levels of tumour necrosis factor-α (TNF) in their bronchoalveolar lavages. This is so even in the absence of overt sepsis. Antibody to TNF (Anti-TNF) may therefore be an effective treatment for ARDS, especially when administered directly to the lung surface, for example as an aerosol.
Description
Treatment of ARDS
Technical Field
The present invention relates to the treatment of adult respiratory distress syndrome (ARDS), a medicament for the treatment of ARDS, and to the manufacture of such a medicament.
Background Art
ARDS is a descriptive term which is applied to a variety of acute, diffuse, lung lesions which, while having differing aetiologies, have similar pathology and clinical characteristics (16). Increase in respiratory frequency, decrease in tidal volume and in lung compliance and deterioration in gas exchange are all symptomatic of the syndrome and result in arterial hypoxaemia.
In many cases ARDS is associated with septicaemia (septic-ARDS) and mortality of sepsis in patients with ARDS is greater than 80%(5). However, ARDS is not, invariably, associated with the symptoms of sepsis.
Where sepsis is present endotoxin, the lipopolysaccharide (LPS) component of the cell wall of Gram-negative bacteria, acts as a potent macrophage activator and induces the synthesis and secretion of biologically active molecules including cytokines. One of these, tumour necrosis factor-α (TNF) is in turn responsible for the release of vasoactive peptides, platelet activating factor,*interleukin-8, prostaglandins and other cytokines which mediate inflammatory and acute phase responses (11). TNF has been postulated to have an important pathophysiological role in a number of clinical situations including septic shock and malignant disease (1-4) .
SUBSTITUTE SHEET
Elevated serum levels of TNF have been detected in patients with septicaemia and have a predictive value in relation to outcome (4) . More recently TNF has been postulated as a mediator in the development of ARDS in septic patients (5) . The main evidence for this suggestion comes from animal models (5,6). The prior administration of anti-TNF monoclonal antibodies has been shown to protect animals from the lethal effects of induced sepsis (12,13) and the treatment of septic ARDS with antibody to TNF (anti-TNF) has been suggested (5).
The role of TNF in ARDS in those patients who show no symptoms of sepsis has remained unclear. Furthermore, existing studies have failed to establish the intrapul onary, as opposed to systemic, role of TNF either in the presence or absence of sepsis. One study showed that levels of plasma TNF showed no correlation with the development of ARDS in a prospective study of patients with sepsis (15) .
The present applicant has determined the levels of TNF present in the bronchopulmonary secretions of the lung in patients with ARDS but showing no overt indication of sepsis at the time of sampling the secretions. Surprisingly, high levels of intrapulmonary TNF were found in these patients.
Furthermore, blood samples from patients who had undergone cardiopul onary bypass operations, and who are particularly susceptible to an ARDS like condition, were examined and shown to produce increased TNF relative to control" samples. Animal experiments confirmed the causative role of TNF in inducing lung damage.
SUBSTITUTE SHEET
Disclosure of Invention
According to a first aspect of the present invention there is provided the use of an antibody to TNF-α (anti-TNF) in the manufacture of a medicament for the treatment of or prevention of non-septic ARDS. By non-septic ARDS is meant ARDS which is not associated with overt sepsis at the time of diagnosis and/or treatment. In particular, the medicament is for treatment of ARDS which is not associated with overt sepsis either at the time of diagnosis or of treatment. The characteristics of overt sepsis are well known to the clinician. For example, a patient with overt sepsis may have a temperature below 36°C or above 38.5°C together with an abnormal white blood cell count of say below 3 x 10-•-'cells/L or above 9 x 10-^/L. Furthermore, there is generally a suspected source of infection.
According to a second aspect of the invention there is also provided a method of treatment of a human or animal subject suffering from or at risk from non-septic ARDS the method comprising administering an effective amount of an anti-TNF antibody.
Examples of conditions and situations which may lead to non-septic adult respiratory distress syndrome, or in conjunction with which non-septic ARDS may occur, and where a medicament manufactured according to the method of the present invention may be of utility include: diffuse pulmonary infections, such as viral, bacterial or fungal infections or protozoal infections such as pneumocγstis; aspiration of liquid; inhalation of toxins and irritants; drug overdose; cardiopulmonary bypass; immunological responses to host or other antigens, for example as occurs in Goodpasture's syndrome or systemic
SUBSTITUTE SHEET
lupus erythamatosus; and nonthoracic trauma together with hypotension, for example as occurs in "shock lung".
The anti-TNF antibody for use according to the invention may, in general, belong to any immunoglobulin class or subclass. Thus, for example, the anti-TNF antibody may be an immunoglobulin G or immunoglobulin M antibody.
The anti-TNF may be of animal, for example mammalian, origin and may be, for example, of murine, rat, hamster or human origin. The antibody may be a whole immunoglobulin, or a fragment thereof, for example a F(ab')2, Fab or Fv fragment.
The anti-TNF antibody may be polyspecific but is preferably monospecific for human TNF-α. The antibody may be a polyclonal antiserum or a monoclonal antibody. Particularly useful antibodies for use according to the invention include recombinant anti-TNF antibodies, i.e. anti-TNF antibodies which have been produced using recombinant DNA techniques. Especially useful antibodies of this type are antibodies having an antigen binding site at least part of which is derived from an immunoglobulin from a non-human species, the remainder of the molecule being derived from a human immunoglobulin.
The anti-TNF antibody may be prepared using well-known immunological techniques employing TNF-α as antigen. Thus, for example, any suitable host may be injected with TNF-α and the serum collected to yield the desired polyclonal anti-TNF antibody after appropriate purification and/or concentration, (for example by affinity chromatography using immobilised TNF-α as the affinity medium) .
SUBSTITUTE SHEET
Alternatively, splenocytes or lymphocytes may be recovered from the TNF-α-injected host and immortalised using for example the method of Kohler et al., Eur. J. Immunol. j5, 511, (1976), the resulting cells being segregated to obtain a single genetic line producing monoclonal anti-TNFα antibodies in accordance with conventional practice. Antibody fragments may be produced using conventional techniques, for example by enzymatic digestion e.g. with pepsin [Parham, J. Immunol., 131, 2895, (1983)] or papain [Lamoyi and Nisonoff, J. Immunol. Meth., 5J5, 235, (1983)]. Where it is desired to produce recombinant anti-TNFα antibodies these may be produced using for example the methods described in European Patent Specifications Nos. 171496, 173494, 194276 and 239400.
In order to treat non-septic ARDS the anti-TNF antibody may, in general, be administered in any appropriate form. For example anti-TNF may be administered intravenously together with a pharmaceutically acceptable carrier, excipient or diluent. Such a composition may be in a form suitable for bolus injection or continuous infusion. Compositions for injection may take such forms as suspensions, solutions or emulsions of anti-TNF in oily or aqueous vehicles, and may contain formulatory agents such as suspending, stabilising and/or dispersing agents.
In view of the inventor's observation that there are high, localised concentrations of pulmonary TNF the antibody may also, suitably, be administered locally to the lungs by instillation or as a dispersion or aerosol, for example in nebulised form or as liposomes. Thus, the invention also provides, according to a further aspect, a pharmaceutical composition for the treatment of ARDS the composition comprising anti-TNF and a pharmaceutically acceptable carrier, excipient or diluent the composition being
SUBSTITUTE SHEET
arranged for administration as an aerosol. Use of anti-TNF in the manufacture of such a pharmaceutical composition is provided according to a still further aspect of the invention. Such a composition is suitable for the therapy of patients with either septic or non-septic ARDS.
Additionally, according to a still further aspect of the invention there is provided an aerosol comprising anti-TNF and a pharmaceutically acceptable excipient, diluent or carrier. The aerosol may be produced by means of a nasal spray containing a pharmaceutical composition comprising anti-TNF and a pharmaceutically acceptable excipient, diluent and carrier; and further having means for aerosolising the pharmaceutical composition.
Pharmaceutical compositions for the treatment of ARDS may contain, in addition to anti-TNF antibody further active ingredients.
The compositions may be used to treat an existing condition or, alternatively, may be used prophylactically to prevent development of ARDS in patients who may be particularly susceptible to the syndrome e.g. those who have had cardiopulmonary bypass surgery.
The dose at which the anti-TNF antibody will be administered will depend on the nature and severity of the condition. Local concentrations of TNF may be measured and a suitable dose of anti-TNF then selected by the physician. In general, the total dose of anti-TNF will be not less than 0.1 mg/kg per day and will not exceed 80 mg/kg per day. Where the antibody is administered by infusion a dose in the range 0.1 - 20 mg/kg may be administered one to four times a day. For example a single infusion of about 10 mg/kg is suitable .
SUBSTITUTE SHEET
Examples
The following examples serve to illustrate that an anti-TNF antibody would be of utility in the treatment of non-septic ARDS. In Example 1 patients suffering from ARDS but who were not overtly septic at the time of examination were shown to have elevated levels of TNF in bronchoalveolar lavages. In Example 2 TNF was employed in an animal model and shown to result in pulmonary damage. Finally, in Example 3, TNF production by the blood cells of patients who had undergone cardiopulmonary bypass was investigated. Such patients are particularly susceptible to a non-septic ARDS-like syndrome.
Example 1
To ascertain whether tumour necrosis factor (TNF) was present within the bronchopulmonary secretions of patients with adult respiratory distress syndrome (ARDS), five patients with this condition were studied. Each patient underwent fibreoptic bronchoscopy and bronchopulmonary aspiration. Control samples were obtained in an identical manner from twenty-four patients undergoing bronchoscopy of whom eight had tuberculosis, six had sarcoidosis and ten had no abnormal findings. The aspirated fluid was assayed for the presence of TNF using an enzyme linked immunoabsorbance technique (ELISA) . TNF levels of greater than 500 u/ml (12.5 ng/ml) were detected from the five patients with ARDS, whereas in the control samples no TNF was detected. These data suggest that intrapulmonary TNF production may be involved in the development of ARDS, and that anti-TNF would be a suitable treatment for the condition.
SUBSTITUTE SHEET
Methods ;
The subjects were 5 adult patients requiring intensive care and mechanical ventilation for respiratory failure. All the patients had ARDS as defined by Ashbaugh (7) . They all had an accepted risk factor, an arterial oxygen tension (kPa) to inspired oxygen tension ratio of greater than 20, bilateral widespread pulmonary infiltrates on chest radiographs and pulmonary calpillary wedge pressures of less than 15mmHg. Their mean age was 56 + 9 yr. The conditions leading to admission of the patients to ITU were as follows, severe burns and smoke inhalation, ureteric rupture, faecal peritonitis, pancreatitis, and massive blood transfusion. At the time of the study none of the patients had been overtly septic for at least 48hr i.e. they were afebrile, had white blood cell count between 3 and 9 X 10-^/L and their routine swabs were sterile. The control specimens were from 24 patients undergoing bronchoscopy as part of their clinical assessment. Six of them had tuberculosis, 5 had sarcoidosis and 10 were being investigated for haemotysis but had normal bronchochoscopies and negative microbiological and cytological samples. Their mean age was 65 + 13 yr.
In each patient fibreoptic bronchoscopy was performed and in the ARDS group this was via the endotracheal tube. Local anaesthesia with lignocaine (2%) was used in all cases. Any bronchopulmonary secretions below the trachea (and endotracheal tube) were aspirated and then 20ml of physiological saline at 37°C was instilled and aspirated. The total resultant aspirate was transported to the laboratory on ice and rapidly frozen at -20°C. All the control patients subsequently underwent formal bronchoalveolar lavage (BAL) (8) and a sample of this fluid was treated and stored in an identical manner. Allthe samples were assayed within a week of collection.
SUBSTITUTE SHEET
The bronchopulmonary secretions and BAL fluid were tested for the presence of TNF using an enzyme linked immunoabsorbent assay (ELISA) with a double sandwich layer techinque. This assay utilised 2 mouse anti-human monoclonal antibodies as previously described (9,10). Titres are expressed in units of activity in direct proportion to those of an interim TNF standard, assigned 40,000 units per gm of recombinant human TNF. The detection limit of the assay was lOu/ml.
Results;
The mean level of TNF detected in the patients with ARDS was 523 + 186 u/ml (13.1 + 4.6 ng/ml) (Table 1). By contrast, no TNF was detected in either the bronchopulmonary secretions nor the BAL fluid of the control subjects.
It is noteworthy that previously published data on plasma levels of TNF in septic patients report TNF levels of less than lng/ml and death occurred in all patients in whom TNF levels greater than 0.1 ng/ml were observed. Four of the patients in the present study survived despite intrapulmonary levels of more than 13ng/ml which makes a systemic source unlikely.
SUBSTITUTE SHEET
The present findings suggest that local pulmonary TNF production is important in the pathogenesis of ARDS. The therapeutic use of anti-TNF antibodies might have a role in patients at risk of and with established ARDS, where either intravenous or aerosolised delivery might be appropriate.
Example 2
The intravenous injection of human recombinant TNF (50-150μg/kg) into rabbits caused noticeable respiratory distress with a significant fall in blood Pθ2« Lungs removed from animals 4 hours after TNF administration were fixed, processed and stained for histological examination.
The small airway tissue showed marked signs of alveolar inflammation with microcirculatory congestion, interstitial thickening and infiltration of inflammatory leucocytes. In a group of animals receiving the anti-TNF Mab, CB6 (lOmg/kg i.v.) 30 min before TNF challenge, there were no respiratory changes and the histology of the lungs did not differ from the lungs of a control group of animals injected with saline instead of TNF.
These observations support the hypothesis that TNF has a causative role in the pathology of non-septic ARDS, and that an anti-TNF antibody would be effective in amelioration of the syndrome.
SUBSTITUTE SHEET
Example 3
Eight patients undergoing coronary artery bypass grafting were studied, with a mean age of 59 + 6 years. All the patients had no previous history of lung disease, normal chest X-rays and had stopped smoking for a minimum of six months prior to surgery. Each patient had blood taken pre and postoperatively and fibreoptic bronchoscopy (FOB) and bronchoalveolar lavage (BAL) post-surgery, whilst still ventilated. Four control patients undergoing vascular surgery were studied as controls and had blood taken pre- and postoperatively. Monocytes and macrophages were separated from blood and BAL fluid respectively by adherance to plastic. These cells were cultured alone and with lipopolysaccharide. The cell culture supernatants were assayed for TNF using a double sandwich ELISA method.
The results (mean + standard deviation, iu/ml) are shown below at Table 2. They suggest that in these patients cardiopulmonary bypass increases the spontaneous and stimulated production of TNF from peripheral blood monocytes but has no direct effect on alveolar macrophages.
The cardiopulmonary bypass patients in this study did not develop ARDS, despite the fact that elevated production of TNF in the peripheral blood circulation was observed. The results suggest that in those patients who do develop ARDS some further stimulus is present which triggers TNF production by lung macrophages.
SUBSTITUTE SHEET
Table 2
Cardiopulmonary Controls Bypass pre- post- pre- post operative operative operative operative
Spontaneous 16 + 15 58 + 42 18 + 12 20 + 10 Monocytes
Stimulated 62 + 43 217 + 47 57 + 34 61 + 31
Spontaneous - 21 + 11 Macrophages
Stimulated - 51 + 23
SUBSTITUTE SHEET
References:
1) Beutler B. The presence of cachectin/tumor necrosis factor in human disease states. Am J Med 1988; 85: 287-288
2) Balkwill F, Osbourne R, Burke F et al. Evidence for tumour necrosis factor/cachectin production in cancer. Lancet 1987; ii: 1229-1232
3) Sauderi P, Sterling KE, Lam KS. Raised plasma levels of tumour necrosis factor in parasitic infections. Lancet 1986; ii: 1364-1365
4) Waage A, Halstensen A, Espevik T. Association between tumour necrosis factor and fatal outcome in patients with meningococcal disease. Lancet 1987; i: 355-357
5) Tracey KJ, Lowry SF, Cerami A. Cachectin/TNF in septic shock and septic adult respiratory distress syndrome. Am Rev Resp Dis 1988; 137: 1377-1399
6) Stephens KE, Ishikaza A, Larrick JW, Raffin TA, Tumor necrosis factor causes increased pulmonary permeability and edema. Am Rev Resp Dis 1988; 137: 1364-1370
7) Ashbaugh BG, Bigelow DB, Petty TL, Levine BE. Acute respiratory distress in adults. Lancet 1967; i: 319-323
8) Hunninghake GW, Gadek JE, Kawanami 0, Ferrans VJ, Crystal RG. Inflammatory and immune processes in the human lung in health and disease: evaluation of bronchoalveolar lavage. Am J Pathol 1979; 97: 149-206
9) Meager A. Parti S, Leung H. Peil E, Mahon B. Preparation and characterization of monoclonal antibodies directed against antigenic determinants of reόombinant human tumour factor (rTNF) . Hybridoma 1987; 6: 305
SUBSTITUTE SHEET
10) Moreno C. Taverne J, Mehlert A et al. Lipoarabinomannan from mycobacterium tuberculosis induces the production of TNF from human and mouse macrophages. Clin Exp Immunol 1989; 76: 240-245
11) Tracy KJ, Wei H, Manogue KR, Lee AT et al. Cachectin/Tumour necrosis factor induces cachexia anaemia and inflammation. J Exp Med 1988, 167: 1211
12) Beutler B, Milsark IW, Cerami AL. Passive immunisation against cachectin/tumour necrosis factor prevents mice from lethal effects of endotoxin. Science 1985, 229: 869-871
13) Tracey KJ, Fong Y, Hesse DG et al. Anti-cachectin/TNF monoclonal antibodies prevent septic shock during bacteraemia. Nature 1987; 330: 662-664
14) Christou NV. Role of neutrophils and macrophages in multiple organ failure. In: Vincent JL, ed. 8 Update in intensive care and emergency medicine. Springer-Verlag, Berlin Heidelberg New York 1989;21
15) Marks JD, Luce JM, Montgomery AB et al. The presence of tumor necrosis factor in patients with septic shock who develop the adult respiratory distress syndrome. Am Rev resp Dis 1988; 138: 229 (abstract)
16) Ingram Jr, RH. Adult respiratory distress syndrome; Harrison's Principles of Internal Medicine 10th Edn - 1983; 1592-1595
SUBSTITUTE SHEET
Claims
1. Use of an antibody to TNF-α (anti-TNF) in the manufacture of a medicament for the treatment or prevention of non-septic ARDS.
2. A use according to Claim 1 wherein non-septic ARDS occurs in association with, or as a consequence of, one or more of the following: diffuse pulmonary infection; aspiration of liquid; inhalation of a toxin or irritant; drug overdose; cardiopulmonary bypass, immunological response to host antigen; non-thoracic trauma associated with hypotension.
3. A pharmaceutical composition for the treatment of septic or non-septic ARDS, the composition comprising anti-TNF and a pharmaceutically acceptable excipient, diluent or carrier, the composition being arranged for administration as an aerosol.
4. Use of anti-TNF in the manufacture of a medicament for the treatment of septic or non-septic ARDS, the medicament being for administration directly to the lung.
5. A use according to Claim 4 wherein the medicament is for administration as an aerosol.
6. An aerosol comprising anti-TNF and a pharmaceutically acceptable excipient diluent or carrier.
7. A nasal spray apparatus comprising: a container and, inside the container, a pharmaceutical composition comprising anti-TNF and a pharmaceutically acceptable excipient, diluent, or carrier; the container being provided with means for aerosolising the composition.
UBSTITUTE SHEET
8. A method for the treatment or prevention of non-septic ARDS, the method comprising administering, to a human or animal subject suffering from, or at risk from, non-septic ARDS, an effective amount of an anti-TNF antibody.
9. A method for the treatment or prevention of septic or non-septic ARDS, the method comprising administering to a human or animal subject suffering from, or at risk from ARDS, an effective amount of an anti-TNF antibody, administration of the TNF being direct to the lung of the subject.
SUBSTITUTE SHEET
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Application Number | Priority Date | Filing Date | Title |
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GB8921123.9 | 1989-09-19 | ||
GB898921123A GB8921123D0 (en) | 1989-09-19 | 1989-09-19 | Treatment of ards |
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WO1991004054A1 true WO1991004054A1 (en) | 1991-04-04 |
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Cited By (38)
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AU654501B2 (en) * | 1990-08-27 | 1994-11-10 | Peptide Technology Ltd. | Method of treating viral infection |
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