Effects on lung compliance, lung volume, and single-breath transfer factor for carbon monoxide in sheep with lentivirus-induced lymphoid interstitial pneumonia.
Static lung compliance, static lung volumes, and transfer factor for carbon monoxide were measured in 12 anesthetized adult Texel ewes seropositive for maedi-visna virus (MVV) and in 11 breed-, sex-, and age-matched seronegative controls. Median static lung compliance in MVV-infected sheep (1.24 L.kPa-1; range, 0.27 to 2.20 L.kPa-1) was not significantly different from that in controls (1.58 L.kPa-1; range, 0.82 to 2.08 L.kPa-1). Median body weight of MVV-infected sheep (56 kg; range, 40 to 75 kg) was significantly (P < 0.05) less than that of controls (65 kg; range, 53 to 87 kg). Median effective alveolar lung volume in MVV-infected sheep (3.36 L; range, 1.44 to 4.52 L) was significantly (P < 0.01) less than that in controls (4.12 L; range, 3.75 to 4.90 L). Median effective end expiratory lung volume in MVV-infected sheep (1.20 L; range, 0.56 to 1.99 L) was significantly (P < 0.001) less than that of controls (1.98 L; range: 1.76 to 2.78 L). Median lung volumes expressed per unit of body weight did not differ significantly between the groups. Median single-breath transfer factor for carbon monoxide in MVV-infected sheep (7.89 mmol.min-1.kPa-1; range, 3.45 to 12.74 mmol.min-1.kPa-1) was significantly (P < 0.001) less than that in controls (14.10 mmol.min-1.kPa-1; range, 10.02 to 18.30 mmol.min-1.kPa-1).(ABSTRACT TRUNCATED AT 250 WORDS)
Department of Veterinary Pathology, Royal (Dick) School of Veterinary Studies, Roslin, Midlothian, Scotland, UK.
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Collie
N J
NJ
Watt
P M
PM
Warren
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Begara
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Luján
D000818:Animals; D001835:Body Weight; D002248:Carbon Monoxide / Q000378:metabolism*; D005260:Female; D016086:Lentivirus / Q000302:isolation & purification; D016180:Lentivirus Infections / Q000503:physiopathology / Q000662:veterinary*; D008170:Lung Compliance; D008176:Lung Volume Measurements; D011658:Pulmonary Fibrosis / Q000382:microbiology / Q000503:physiopathology / Q000662:veterinary*; D012044:Regression Analysis; D012119:Respiration; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology*
D002248:Carbon Monoxide