Enhancement of Corticosteroid Efficacy in COPD
Enhancement of Corticosteroid Efficacy in COPD
This is a pilot study designed to evaluate the effects of theophylline and roflumilast on
 circulating Histone deacetylase (HDAC) levels in subjects with COPD, and the bronchodilator
 effects of corticosteroids. Studies will be performed in 10 subjects with COPD nonresponsive
 to bronchodilators. Subjects will receive theophylline tablets for 1 week, followed by
 measurement of circulating HDAC and the acute effect of oral prednisone on the bronchodilator
 response to inhaled beta agonist. Roflumilast tablets will be added to the theophylline for a
 further week and the studies repeated. The study will provide preliminary data on the effects
 of theophylline and roflumilast on circulating HDAC levels and the effects of corticosteroids
 on the beta agonist bronchodilator response in COPD.
1. SUBJECTS: 10 Stable patients >45 years of age, with an established diagnosis of COPD
 (18), with FEV1 <60% predicted, FEV1/FVC <70% and <+15% FEV1 response to bronchodilator
 will be recruited. Patients of both genders will be included.

 2. TESTS

 a) Blood: i) HDAC 2 in peripheral blood mononuclear cells: ii) Serum theophylline level
 b) Spirometry for measurement of FVC, FEV1 and FEV1/FVC

 PROCEDURES Visit 1.

 1. After providing informed consent, subjects will receive a brief history and
 physical examination

 2. Blood will be drawn from a peripheral vein for HDAC2 levels (2 ml).

 3. Each subject will undergo baseline spirometry, which will be repeated after 3
 inhalations of an albuterol inhaler.

 c) Subjects will be asked to continue their regular treatment regimen, including long
 and short acting beta agonists and anticholinergics, as well as inhaled steroids.

 d) Theophylline tablets extended-release 12 hr formulation, 300 mg orally taken every 12
 hr will be dispensed, and the subject will return one week later for Visit 2. The
 subject will be asked to refrain from using his/her long acting beta agonists and
 anticholinergics for one day (24 hours) prior to Visit 2, and not to use the short
 acting beta agonist or take any caffeine containing drinks on the morning of visit 2.
 The subject will be asked to inform the P. I. should there be any adverse event.

 Subjects discontinuing the study drugs because of side effects will be withdrawn from
 the study.

 Visit 2.

 1. A brief history and physical examination will be performed and the subject will be
 asked about any change in symptoms.

 2. Blood (5 ml) will be drawn from a peripheral vein for HDAC2 and theophylline levels

 3. After baseline spirometry the subject will be given a single dose of 40 mg
 prednisone tablets.

 4. After 120 minutes, spirometry will be repeated, followed by 3 puffs of albuterol
 inhaler and repeat spirometry.

 The subject will then be asked to continue the theophylline tablets and in addition will
 be given roflumilast tablets 500 mcg orally once daily, and asked to return one week
 later for Visit 3.

 The subject will be asked to refrain from using his/her long acting beta agonists and
 anticholinergics for one day (24 hours) prior to Visit 3, and not to use the short
 acting beta agonist or take any caffeine containing drinks on the morning of visit 3.
 The subject will be asked to inform the P. I. should there be any adverse event.

 Visit 3

 1. A brief history and physical examination will be performed and the subject will be
 asked about any change in symptoms.

 2. Blood (5 ml) will be drawn from a peripheral vein for HDAC2 measurement.

 3. After baseline spirometry the subject will be given a single dose of prednisone
 tablets in a dose of 40 mg.

 4. After 120 minutes, spirometry will be repeated, followed by 3 puffs of albuterol
 inhaler and repeat spirometry.

 The subject will then have completed the study and will return to his/her previous
 treatment regimen.

 Data analysis:

 Results will be compared in terms of baseline vs drug by paired t test for change in
 FEV1 and FEV1/FVC as well as peripheral blood mononuclear blood HDAC2 levels. The
 relationship between FEV1 and FEV1/FVC and blood HDAC2 levels will be examined by
 correlation analysis.

 Expected results It is expected that with both theophylline and roflumilast treatment
 there will be a significant (p<0.05) increase in HDAC2 levels. It is also expected that
 with both theophylline and roflumilast treatment there will be a significant (p<0.05)
 increase in the bronchodilator response after the steroid dose, thereby supporting the
 hypothesis.

 It is also possible that there will be no effect on spirometry of either treatment; this
 would indicate that an increase in HDAC2 does not improve steroid responsiveness.
Inclusion Criteria:

 -  Established diagnosis of COPD with FEV1 <60% predicted

 -  FEV1/FVC <70% and <+15% FEV1 response to bronchodilator.

 -  Patients of both genders will be included.

 -  IRB approved written informed consent will be obtained from each subject.

 Exclusion Criteria:

 1. Recent (<1 month) exacerbation of COPD,

 2. Known hypersensitivity to beta agonists, theophylline, steroids, or roflumilast.

 3. Current or recent (<2 weeks) treatment with oral steroids, theophylline or other
 methylxanthines, or roflumlast.

 4. Diagnosis or history of asthma, uncontrolled hypertension, or congestive heart
 failure.

 5. History of Cardiac arrhythmia

 6. History of seizures.

 7. History of Liver disease

 8. Gastrointestinal disease, including history of peptic ulcer disease.

 9. Current infection or antibiotic treatment.

 10. History of depression or psychiatric disease.