P J Blackburn

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The effects of, and interactions between chronic Trichostrongylus vitrinus infection and immune suppression with methylprednisolone were investigated for a period of 112 days in a grazed flock of 176 crossbred meat lambs. Worm egg count of non-immune-suppressed lambs increased rapidly from days 21 to 42 post-initial infection, and then steadily declined.(More)
There is experimental evidence that reduced productivity of sheep infected with Teladorsagia circumcincta and Trichostrongylus colubriformis is due largely to host immune response to infection. To investigate this in Australian sheep infected with Trichostrongylus vitrinus under grazing conditions, an experiment was designed using 176 lambs sired by 22 Poll(More)
Two healthy female volunteers were subjected to hyperbaric air pressure of 5 ATA comparable to 130 feet of sea water (fsw) for 20 min 7 or 8 times during their menstrual cycles (experimental cycles). During the experimental cycles hormone assays for follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol, progesterone, and testosterone were(More)
PURPOSE To report a patient with an initial presentation of optic disk edema secondary to Propionibacterium acnes endophthalmitis. METHODS Interventional case report. The patient had surgery and treatment related to endophthalmitis. Nine months after cataract surgery with posterior chamber lens implant, a 79-year-old man receiving topical corticosteroids(More)
Hyperbaric exposure during pregnancy in sheep: staged and rapid decompression. Undersea Biomed Res 1983; 10(1): 11-15. --Twelve sheep with dated pregnancies were exposed for 20 min to hyperbaric pressure comparable to 165 feet of sea water weekly between the 49th and 133rd days of pregnancy. Six were decompressed in stages and six directly without(More)
OBJECTIVE To isolate Trichostrongylus vitrinus from naturally-acquired mixed trichostrongylid infections (predominantly Trichostrongylus spp. and Teladorsagia circumcincta) in sheep using differential larval development temperatures and the anatomical location of adults. METHODS Faeces were collected from ewes with mixed, naturally acquired(More)
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