Acute oxalate toxicity of sheep associated with slender iceplant (Mesembryanthemum nodiflorum)     

RH JACOB  RL PEET 《Australian veterinary journal》1989,66(3):91-92

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The activities of amylase and a trypsin‐like protease in the gut contents of germ‐free and conventional chickens     

Sally M. Philips  R. Fuller 《British poultry science》1983,24(1):115-121

1. Proteolytic and amylase activities were assayed in the gut contents of germ‐free and conventional chickens aged 3 and 14 d.

2. The tendency was for the proteolytic activity to be increased and the amylase activity to be decreased in conventional chicks. These differences were statistically significant in the caecum.

3. All of the additional proteolytic activity detectable in the caecum of conventional chicks was inhibited by soyabean trypsin inhibitor. However, the increased activity was not detectable in the small intestine and was, therefore, not due to pancreatic trypsin.

4. Attempts to demonstrate in vitro bacterial production of a trypsin‐like enzyme were unsuccessful.  相似文献   

Soft tissue sarcoma in a short‐beaked echidna (Tachyglossus aculeatus)          下载免费PDF全文

RL Robey  C Sangster  M Gabor  SA Lindsay 《Australian veterinary journal》2018,96(9):360-365

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Jugular venous emboli of brain tissue induced in sheep by the use of captive bolt guns     

Anil MH  Love S  Helps CR  McKinstry JL  Brown SN  Philips A  Williams S  Shand A  Bakirel T  Harbour D 《The Veterinary record》2001,148(20):619-620

Emboli of central nervous tissue were detected in the jugular venous blood of two of 15 sheep stunned with a conventional cartridge-operated captive bolt gun and in two of 15 sheep stunned with a pneumatically activated gun. No emboli were detected in arterial blood from these sheep or in venous blood from sheep stunned electrically. Emboli from an animal with BSE could transmit the disease to people.  相似文献   

Drosophila RNAi screen reveals CD36 family member required for mycobacterial infection     

Philips JA  Rubin EJ  Perrimon N 《Science (New York, N.Y.)》2005,309(5738):1251-1253

Certain pathogens, such as Mycobacterium tuberculosis, survive within the hostile intracellular environment of a macrophage. To identify host factors required for mycobacterial entry and survival within macrophages, we performed a genomewide RNA interference screen in Drosophila macrophage-like cells, using Mycobacterium fortuitum. We identified factors required for general phagocytosis, as well as those needed specifically for mycobacterial infection. One specific factor, Peste (Pes), is a CD36 family member required for uptake of mycobacteria, but not Escherichia coli or Staphylococcus aureus. Moreover, mammalian class B scavenger receptors (SRs) conferred uptake of bacteria into nonphagocytic cells, with SR-BI and SR-BII uniquely mediating uptake of M. fortuitum, which suggests a conserved role for class B SRs in pattern recognition and innate immunity.  相似文献   

Isolation of faecal chlamydia from sheep in Britain andtheir characterization by cultural properties     

M.J. Clarkson  H.L. Philips 《Veterinary journal (London, England : 1997)》1997,153(3):307-310

Faeces samples were taken per rectum from sheep on 26 farms in England and Wales and examined for thepresence of chlamydia by culture McCoy cell monolayers. Thirteen of the fars were known to have had abortion outbreaks associated with Chlamydia psittaci (enzootic abortion) and 13 were free of this infection. The chlamydia isolated were characterized by cultural techniques. Chlamydia were isolated from the faeces of lambs on all 26 farms and the prevalence of infection varied from 5–50% on individual farms. There was no significant difference between the proportion of infected lambs on farms where enzootic abortion was present or absent. Lambs first showed infection when they were 3 months old and the prevalence rate of infection increased up to 9 months old. No chlamydia were isolated from the faeces of 316 adult ewes. The chlamydia were identified as enteric rather than abortion type and thus were C. pecorum rather than C. psittaci.  相似文献   

Infertility in 2 Murray Grey bulls associated with abaxial and swollen midpiece sperm defects     

RL PEET  P. KLUCK  M. McCARTHY 《Australian veterinary journal》1988,65(11):359-360

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Receptor activation alters inner surface potential during phagocytosis     

Yeung T  Terebiznik M  Yu L  Silvius J  Abidi WM  Philips M  Levine T  Kapus A  Grinstein S 《Science (New York, N.Y.)》2006,313(5785):347-351

The surface potential of biological membranes varies according to their lipid composition. We devised genetically encoded probes to assess surface potential in intact cells. These probes revealed marked, localized alterations in the charge of the inner surface of the plasma membrane of macrophages during the course of phagocytosis. Hydrolysis of phosphoinositides and displacement of phosphatidylserine accounted for the change in surface potential at the phagosomal cup. Signaling molecules such as K-Ras, Rac1, and c-Src that are targeted to the membrane by electrostatic interactions were rapidly released from membrane subdomains where the surface charge was altered by lipid remodeling during phagocytosis.  相似文献   

Detection of Aphanomyces invadans and epizootic ulcerative syndrome in the Murray‐Darling drainage     

J Go  I Marsh  M Gabor  V Saunders  RL Reece  J Frances  C Boys  LJ Gabor 《Australian veterinary journal》2012,90(12):513-514

Epizootic ulcerative syndrome was diagnosed, and the presence of Aphanomyces invadans confirmed, from an outbreak of clinical disease in wild‐caught bony bream (Nematalosa erebi) from the Darling River near Bourke, in New South Wales, Australia, during 2008. This confirms a significant extension of the agent beyond its historical range.  相似文献   

Involvement of ATP‐sensitive K+ channels in the peripheral antinociceptive effect induced by ketamine     

Thiago RL Romero  Igor DG Duarte 《Veterinary anaesthesia and analgesia》2013,40(4):419-424

ObjectiveTo investigate the contribution of K⁺ channels on peripheral antinociception induced by ketamine.Study designProspective experimental study.Animals110 male Wistar rats weighing 160–200 g.MethodsThe paw pressure required to elicit limb flexion was designated as the nociceptive threshold. Hyperalgesia was induced by intraplantar injection of prostaglandin E₂. All drugs were administered locally into the right hind paw of rats. Ketamine was administered into the right hind paw 2 hours and 55 minutes after local injection of PGE₂. Tetraethylammonium was administered 30 minutes prior to ketamine and the other K⁺ channel blockers, glibenclamide, dequalinium and paxilline, were administered 5 minutes prior to ketamine.ResultsProstaglandin E₂ (2 μg per paw) induced hyperalgesia. Ketamine (10, 20, 40 and 80 μg per paw) elicited a local peripheral antinociceptive effect that was antagonized by a specific blocker of ATP‐sensitive K⁺ channels, glibenclamide (20, 40 and 80 μg per paw). In another experiment, the non‐selective voltage‐dependent K⁺ channel blocker tetraethylammonium (30 μg per paw) and small and large conductance blockers of Ca²⁺‐activated K⁺ channels, dequalinium (50 μg per paw) and paxilline (20 μg per paw), were ineffective at blocking the effect of a local ketamine injection.Conclusions and clinical relevanceAnalysis of these results provides evidence that ketamine, may in part, induce peripheral antinociceptive effects by ATP‐sensitive K⁺ channel pathway activation.  相似文献