The next phase of this ongoing research will address the mechanisms which affect heterogeneity in the lungs. Building on previous work in this program, the focus of the proposed program is on the mechanisms of heterogeneity of ventilation and perfusion in the lungs. The projects deal either with ventilation or perfusion separately, the matching of the two as it affects gas exchange and influences on edema formation. The approach is multidisciplinary, with investigators trained in medicine, physiology, anesthesiology, morphology, engineering and radiology. It is a result of two decades of interest in pulmonary physiology and medicine and collaboration between the investigators. The program is designed to support other research, particularly in ARDS and pulmonary vascular disease, which is proceeding at this institution. The strengths of the proposal include the integration of many disciplines, the productivity of this group of investigators and the expansion of experimental approaches using imaging, fluorescent microspheres, tissue diffusion cells, and aerosol assessment of ventilation heterogeneity. The outcome should be a more complete understanding of the mechanisms by which the lungs respond to perturbations in ventilation and perfusion distribution both in health and disease.
| Pickerodt, Philipp A; Francis, Roland C; Höhne, Claudia et al. (2014) Pulmonary vasodilation by acetazolamide during hypoxia: impact of methyl-group substitutions and administration route in conscious, spontaneously breathing dogs. J Appl Physiol (1985) 116:715-23 |
| Robertson, H Thomas; Neradilek, Blazej; Polissar, Nayak L et al. (2007) Sporadic coordinated shifts of regional ventilation and perfusion in juvenile pigs with normal gas exchange. J Physiol 583:743-52 |
| Anderson, Joseph C; Hlastala, Michael P (2007) Breath tests and airway gas exchange. Pulm Pharmacol Ther 20:112-7 |
| Emery, Michael J; Eveland, Randy L; Kim, Seong S et al. (2007) CO2 relaxes parenchyma in the liquid-filled rat lung. J Appl Physiol 103:710-6 |
| Robertson, H Thomas; Hlastala, Michael P (2007) Microsphere maps of regional blood flow and regional ventilation. J Appl Physiol 102:1265-72 |
| Shimoda, Larissa A; Luke, Trevor; Sylvester, J T et al. (2007) Inhibition of hypoxia-induced calcium responses in pulmonary arterial smooth muscle by acetazolamide is independent of carbonic anhydrase inhibition. Am J Physiol Lung Cell Mol Physiol 292:L1002-12 |
| Hlastala, Michael P; Anderson, Joseph C (2007) The impact of breathing pattern and lung size on the alcohol breath test. Ann Biomed Eng 35:264-72 |
| Kregenow, David A; Rubenfeld, Gordon D; Hudson, Leonard D et al. (2006) Hypercapnic acidosis and mortality in acute lung injury. Crit Care Med 34:1-7 |
| Anderson, Joseph C; Lamm, Wayne J E; Hlastala, Michael P (2006) Measuring airway exchange of endogenous acetone using a single-exhalation breathing maneuver. J Appl Physiol 100:880-9 |
| Anderson, Joseph C; Hlastala, Michael P (2006) The kinetics of transdermal ethanol exchange. J Appl Physiol 100:649-55 |
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