Biomaterial Database

Bronchial vascular reabsorption of low-protein interstitial edema liquid in perfused sheep lungs. 1996

M Fukue, and V B Serikov, and E H Jerome

Cardiovascular Research Institute, University of California, San Francisco 94143, USA.

Previously, we quantified reabsorption of interstitial pulmonary edema liquid into the pulmonary circulation during recovery from hydrostatic edema. To determine whether the bronchial circulation also reabsorbs edema liquid, we induced very-low-protein interstitial edema in seven sheep lungs by perfusion of the pulmonary circulation with diluted blood and 1% albumin in Krebs-Henseleit buffer containing 125I-labeled albumin for 70 +/- 40 min. In eight control sheep we perfused the lungs with diluted blood and 5% albumin in Krebs-Henseleit buffer containing 125I-albumin without causing significant edema formation. Subsequently, we washed the intravascular tracer from the pulmonary circulation with buffered saline and then perfused the bronchial vessels via the bronchoesophageal artery with whole or diluted blood (normal protein osmotic pressure). We measured flow, hematocrit, and 125I-albumin concentration in the venous outflow into the left atrium and into the azygos vein for 2 h. We calculated the volume of liquid reabsorbed on the basis of the change in hematocrit and 12I-albumin concentration in the outflow. On the basis of hematocrit dilution, the net clearance of interstitial liquid (edema minus control) averaged 21 ml (15% of the induced edema). One the basis of 125I-albumin reabsorption, the net clearance of interstitial liquid was 12 ml. We conclude that the bronchial circulation may be a clearance route for interstitial liquid and protein during recovery from low-protein hydrostatic edema.

UI	MeSH Term	Description	Entries
D007457	Iodine Radioisotopes	Unstable isotopes of iodine that decay or disintegrate emitting radiation. I atoms with atomic weights 117-139, except I 127, are radioactive iodine isotopes.	Radioisotopes, Iodine
D008168	Lung	Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood.	Lungs
D009929	Organ Size	The measurement of an organ in volume, mass, or heaviness.	Organ Volume,Organ Weight,Size, Organ,Weight, Organ
D011652	Pulmonary Circulation	The circulation of the BLOOD through the LUNGS.	Pulmonary Blood Flow,Respiratory Circulation,Circulation, Pulmonary,Circulation, Respiratory,Blood Flow, Pulmonary,Flow, Pulmonary Blood,Pulmonary Blood Flows
D011654	Pulmonary Edema	Excessive accumulation of extravascular fluid in the lung, an indication of a serious underlying disease or disorder. Pulmonary edema prevents efficient PULMONARY GAS EXCHANGE in the PULMONARY ALVEOLI, and can be life-threatening.	Wet Lung,Edema, Pulmonary,Edemas, Pulmonary,Pulmonary Edemas,Lung, Wet,Lungs, Wet,Wet Lungs
D001834	Body Water	Fluids composed mainly of water found within the body.	Water, Body
D001980	Bronchi	The larger air passages of the lungs arising from the terminal bifurcation of the TRACHEA. They include the largest two primary bronchi which branch out into secondary bronchi, and tertiary bronchi which extend into BRONCHIOLES and PULMONARY ALVEOLI.	Primary Bronchi,Primary Bronchus,Secondary Bronchi,Secondary Bronchus,Tertiary Bronchi,Tertiary Bronchus,Bronchi, Primary,Bronchi, Secondary,Bronchi, Tertiary,Bronchus,Bronchus, Primary,Bronchus, Secondary,Bronchus, Tertiary
D006400	Hematocrit	The volume of packed RED BLOOD CELLS in a blood specimen. The volume is measured by centrifugation in a tube with graduated markings, or with automated blood cell counters. It is an indicator of erythrocyte status in disease. For example, ANEMIA shows a low value; POLYCYTHEMIA, a high value.	Erythrocyte Volume, Packed,Packed Red-Cell Volume,Erythrocyte Volumes, Packed,Hematocrits,Packed Erythrocyte Volume,Packed Erythrocyte Volumes,Packed Red Cell Volume,Packed Red-Cell Volumes,Red-Cell Volume, Packed,Red-Cell Volumes, Packed,Volume, Packed Erythrocyte,Volume, Packed Red-Cell,Volumes, Packed Erythrocyte,Volumes, Packed Red-Cell
D006439	Hemodynamics	The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.	Hemodynamic
D000042	Absorption	The physical or physiological processes by which substances, tissue, cells, etc. take up or take in other substances or energy.