Does transbronchial needle aspiration improve the diagnostic yield of bronchoscopy in sarcoidosis?
The results of our study suggest that a diagnostic approach combining TBNA and TBLB is safe and effective in the setting of stage I and II sarcoidosis. It also confirmed the value of TBNA, with excellent diagnostic yields especially in stage I of the disease.
These findings suggest that pharmacological stimulation of any of these neurochemical systems in isolation is insufficient to enable acquisition of a food-reinforced operant task. Thus, these selective processes, while likely involved in control of food intake and food-seeking behavior, appear unable to recapitulate the conditions necessary to mimic the state of negative energy balance.