Caffeine and exhaled nitric oxide

Caffeine decreases exhaled nitric oxide.

BACKGROUND Caffeine is known to inhibit phosphodiesterases, to mobilise intracellular calcium, and to act as an antagonist at adenosine receptors, all of which can potentially alter nitric oxide (NO) production. It was therefore hypothesised that caffeine may alter exhaled NO (eNO) levels. METHODS In a randomised, single blind, crossover manner, 12 normal subjects consumed either (1) coffee a...

Exhaled Nitric Oxide

Exhaled nitric oxide and COPD.

We were interested to read the paper by LEHTIMÄKI et al. [1] recently published in the European Respiratory Journal, in which those authors reported that ‘‘high pre-treatment levels of J9aw,NO [bronchial nitric oxide flux] are related to symptom relief and improvement of airway obstruction’’ when inhaled fluticasone is given to patients with chronic obstructive pulmonary disease (COPD). Their d...

ATS workshop proceedings: exhaled nitric oxide and nitric oxide oxidative metabolism in exhaled breath condensate.

The field of noninvasive assessment of airway inflammation has developed rapidly since the discoveries in the late 1980s that nitric oxide (NO) is a central biological mediator and, in 1991, that exhaled breath contained NO (1). Accompanying this was the realization that asthma is an inflammatory airway syndrome, best treated by antiinflammatory agents. Subsequently, exhaled NO was found to be ...

Exhaled nitric oxide in sarcoidosis.

BACKGROUND Increased production of nitric oxide (NO) by the lower respiratory tract is viewed as a marker of airway inflammation in asthma and bronchiectasis. NO is a potentially important immune modulator, inhibiting the release of several key pro-inflammatory cytokines. As sarcoidosis is characterised by granulomatous airway inflammation, we hypothesised that exhaled NO levels might be raised...