Safety and Efficacy Study of the Use of Sodium Pyruvate Bronchodilation in Asthmatics
Safety and Efficacy Study of the Use of Sodium Pyruvate Bronchodilation in Asthmatics
Sodium pyruvate in sodium chloride solution will be delivered by nebulization to the lungs.
 It is believed that this administration will produce bronchodilation in asthmatics as
 determined by improvement in FEV1. FEV1 is a measure of lung function, and will be determined
 after administration of sodium pyruvate. The study is a blinded, so subjects may receive
 either the sodium pyruvate or a sodium chloride placebo. The primary endpoint will be the
 improvement of FEV1 after 15 minutes in subjects receiving sodium pyruvate compared to the
 FEV1 of subjects receiving the sodium chloride placebo.
Sodium Pyruvate, an intermediate metabolite, has been investigated as a therapeutic agent to
 reduce reactive oxygen species in the lung. Evaluation of FEV1 as a safety parameter and
 sequela of reactive oxygen species reduction identified inhaled Sodium Pyruvate as a
 potential bronchodilator.

 A number of lung diseases are typically characterized by marked inflammation at the site of
 the lung injury. This inflammatory process leads to further destruction of surrounding
 healthy lung tissue, and a continuation and expansion of the sites of inflammation. This
 inflammatory process results in the production of reactive oxygen species, including
 superoxide anions and hydrogen peroxide, at the site of inflammation.

 Nitric oxide is a known bronchodilator, as well as a vasodilator. It has been used
 successfully used to treat patients with various pulmonary disorders. 1 When endogenous
 nitric oxide is exposed to oxygen radicals, however, it is converted to the toxic oxidant
 nitrogen dioxide, and its bronchodilating effect is mitigated. Conversely, nitrogen dioxide
 is a known deep lung irritant. Its adverse consequences include the following: pulmonary
 inflammation; reduced levels of lung antioxidants 2; impairment of respiratory defense
 mechanisms leading to increased susceptibility to respiratory pathogens 3 and increased
 incidence and severity of respiratory infections; reduced lung function, and increased asthma
 and COPD symptoms.

 Reactive oxygen species, especially superoxide anions, are known to compromise lung function
 by increasing bronchoconstriction. As a result of the increasing inflammation and the
 production of reactive oxygen species, and the decrease in nitric oxide that is believed to
 occur with the interstitial lung diseases, healthy tissue is damaged and lung function is
 compromised.

 Based on our present understanding of the disease process involved with these lung diseases,
 it appears that an intervention in the inflammatory process that would result in a reduction
 in reactive oxygen species and a subsequent increase in nitric oxide could be an effective
 way to intervene in the disease process. This intervention would prevent the further spread
 of inflammation and lung damage caused by the production of reactive oxygen species, such as
 superoxide anions and hydrogen peroxide, and increase lung function by increasing
 bronchodilation.

 Sodium pyruvate is a reactive oxygen species antagonist that has been shown to neutralize
 oxygen radicals, specifically lowering the overproduction of superoxide anions, regulate the
 production and level of other inflammatory mediators, and increase the synthesis of nitric
 oxide. 4 Sodium pyruvate also increases cellular levels of glutathione, a major cellular
 antioxidant, which is reduced dramatically in antigen-induced lung disease patients. 5

 In pilot studies in mild asthmatic subjects, it was demonstrated that inhalation of low doses
 (0.5 mM) of nebulized sodium pyruvate decreased expired hydrogen peroxide by 30% at four
 hours compared to inhalation of a nebulized saline control. These subjects also experienced
 increased pulmonary function as determined by FEV1 (+12.8%) and PEF (+34.5%) measurements
 after four hours (referenced in Cellular Sciences IND #50,089). It is theorized that the
 reactive oxygen species antagonist properties of sodium pyruvate reduced the production of
 oxygen radicals, including hydrogen peroxide, and increased the levels of nitric oxide.
 Together, this led to reduced inflammation and lung damage, and increased lung function
 through improved bronchodilation.

 In summary, it is believed that inhalation of sodium pyruvate will reduce the lung damage
 resulting from the increase in reactive oxygen species associated with the inflammation
 component of the disease, and will enhances the availability of nitric oxide to produce
 bronchodilation by enhancing its synthesis and protecting it from destruction by reactive
 oxygen species.

 Experimental Clinical Protocol Hypothesis: Sodium Pyruvate delivered by nebulization to the
 lungs produces bronchodilation in asthmatics as measured by FEV1

 Intent: Provide support for further drug development of nebulized Sodium Pyruvate as a
 therapeutic agent in asthma

 Design Randomized, double-blind, placebo-controlled cross-over study of 52 completed subjects

 Treatment 1: 0.5 mM sodium pyruvate in 0.9% saline solution, (5ml) (Cellular Sciences, CA)
 nebulized via a Pari LC Plus(R) reusable nebulizer powered by a ProNeb(R) compressor
 (Midlothian, VA) Treatment 2: Saline 0.9%, (5ml) (Baxter) nebulized using the same nebulizer
 system as above A randomization algorithm using random permuted blocks (4-8 subjects) will be
 used to generate treatment order assignments. An unblinded statistician will generate this
 list of treatment order assignments.

 Patient Recruitment and Selection The large cohort of potential subjects who have previously
 participated in asthma studies through our clinical research laboratory will be apprised of
 the study. Patients attending the UCLA Asthma and Cough Center will also be informed of the
 study. Advertisements will be sent by regular mail and by e-mail to physicians participating
 in the UCLA Healthcare System and to local pulmonologists practicing throughout the Los
 Angeles area. Local Allergists who collaborate with us in common clinical trial protocols
 will be informed of the study by personalized letter and e-mail. Advertisements will be
 placed in the classified and/or health sections of local newspapers. A description of the
 study will be posted on internet sites featuring clinical research trials.

 Subjects will be recruited until a total of 52 complete the study. Assuming a 5% drop-out and
 non-compliance rate, we expect a total of 55 subjects recruited Patient Eligibility Criteria
Inclusion Criteria:

 1. A physician diagnosis of asthma

 2. Age years old

 3. Symptoms consistent with asthma for at least 6 months

 4. Current asthma medications: Short-acting inhaled beta agonists as needed for control
 of asthma symptoms with or without a low to medium dose of an ICS, as defined in the
 table below and if on a ICS may also be on a long-acting beta agonist provided it is
 withheld for 24 hours prior to the testing days.

 Inhaled Corticosteroid Dose less than or equal to:

 Beclomethasone-HFA 480 µg/day Budesonide-DPI 1000 µg/day Flunisolide 2000 µg/day
 Fluticasone 500 µg/day Triamcinolone 2000 µg/day

 5. FEV1 at screening 50-80% predicted (Hankinson6)

 6. Reversibility with albuterol of 12% and 200 ml FEV1FEV1 at 30 minutes.

 Exclusion Criteria:

 -