Endotoxin-induced lung injury in unanesthetized sheep: effect of methylprednisolone. 1981

R H Demling, and M Smith, and R Gunther, and T Wandzilak

Our purpose was to study the effect of methylprednisolone (MPS) on endotoxin-induced lung injury. We used lung lymph flow and lymph protein content at sensitive indicators of pulmonary microvascular integrity in unanesthetized sheep. Seven animals were given E coli endotoxin (2 micrograms/kg) alone and also endotoxin with MPS pretreatment (30 mg/kg) in paired separate studies. The endotoxin injury was divided into an early hypertensive phase (30-90 minutes) characterized by a significant increase in pulmonary artery pressure (Ppa) and lymph flow, QL. This was followed later (3-5 hours) by a significant increase in protein-rich QL with normal pressures. MPS pretreatment significantly increased both injury phases in all animals. White cell count decreased in both groups; however, lymph beta-glucuronidase increased only in the nontreated group. Platelet count decreased in the nontreated group. Seven animals were then compared using endotoxin alone or with MPS treatment one hour after endotoxin. Only four of seven animals had a decrease in the lung injury after MPS treatment. We conclude that methylprednisolone is very effective in preventing lung injury, but only minimally effective in reversing the injury from endotoxin.

UI MeSH Term Description Entries
D006976 Hypertension, Pulmonary Increased VASCULAR RESISTANCE in the PULMONARY CIRCULATION, usually secondary to HEART DISEASES or LUNG DISEASES. Pulmonary Hypertension
D008168 Lung Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood. Lungs
D008196 Lymph The interstitial fluid that is in the LYMPHATIC SYSTEM. Lymphs
D008775 Methylprednisolone A PREDNISOLONE derivative with similar anti-inflammatory action. 6-Methylprednisolone,Medrol,Metipred,Urbason,6 Methylprednisolone
D002199 Capillary Permeability The property of blood capillary ENDOTHELIUM that allows for the selective exchange of substances between the blood and surrounding tissues and through membranous barriers such as the BLOOD-AIR BARRIER; BLOOD-AQUEOUS BARRIER; BLOOD-BRAIN BARRIER; BLOOD-NERVE BARRIER; BLOOD-RETINAL BARRIER; and BLOOD-TESTIS BARRIER. Small lipid-soluble molecules such as carbon dioxide and oxygen move freely by diffusion. Water and water-soluble molecules cannot pass through the endothelial walls and are dependent on microscopic pores. These pores show narrow areas (TIGHT JUNCTIONS) which may limit large molecule movement. Microvascular Permeability,Permeability, Capillary,Permeability, Microvascular,Vascular Permeability,Capillary Permeabilities,Microvascular Permeabilities,Permeabilities, Capillary,Permeabilities, Microvascular,Permeabilities, Vascular,Permeability, Vascular,Vascular Permeabilities
D004731 Endotoxins Toxins closely associated with the living cytoplasm or cell wall of certain microorganisms, which do not readily diffuse into the culture medium, but are released upon lysis of the cells. Endotoxin
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012756 Sheep Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS. Ovis,Sheep, Dall,Dall Sheep,Ovis dalli
D012772 Shock, Septic Sepsis associated with HYPOTENSION or hypoperfusion despite adequate fluid resuscitation. Perfusion abnormalities may include but are not limited to LACTIC ACIDOSIS; OLIGURIA; or acute alteration in mental status. Endotoxin Shock,Septic Shock,Shock, Endotoxic,Shock, Toxic,Toxic Shock,Toxic Shock Syndrome,Endotoxin Shocks,Shock Syndrome, Toxic,Shock, Endotoxin,Shocks, Endotoxin,Toxic Shock Syndromes

Related Publications

R H Demling, and M Smith, and R Gunther, and T Wandzilak
February 1988, The American review of respiratory disease,
R H Demling, and M Smith, and R Gunther, and T Wandzilak
March 1988, Respiration physiology,
R H Demling, and M Smith, and R Gunther, and T Wandzilak
February 1984, Journal of applied physiology: respiratory, environmental and exercise physiology,
R H Demling, and M Smith, and R Gunther, and T Wandzilak
March 2002, Respiratory physiology & neurobiology,
R H Demling, and M Smith, and R Gunther, and T Wandzilak
September 1985, The American review of respiratory disease,
R H Demling, and M Smith, and R Gunther, and T Wandzilak
May 1984, The Journal of surgical research,
R H Demling, and M Smith, and R Gunther, and T Wandzilak
August 2001, The European journal of surgery = Acta chirurgica,
R H Demling, and M Smith, and R Gunther, and T Wandzilak
January 1989, Circulatory shock,
R H Demling, and M Smith, and R Gunther, and T Wandzilak
February 1987, Journal of applied physiology (Bethesda, Md. : 1985),
R H Demling, and M Smith, and R Gunther, and T Wandzilak
February 1983, Surgery,
Copied contents to your clipboard!