An immunohistochemical and polymerase chain reaction evaluation of feline plasmacytic pododermatitis     

Bettenay SV  Lappin MR  Mueller RS 《Veterinary pathology》2007,44(1):80-83

Sections of 14 skin biopsies of cats with plasmacytic pododermatitis and a clinical follow-up of 12-36 months were stained with a polyclonal anti-Mycobacterium bovis (Bacille Calmette-Guerin = BCG) antibody cross-reactive to a broad spectrum of fungi and bacteria. All sections were negative for organisms within the actual footpad tissue with the anti-BCG antibody stains. Polymerase chain reaction (PCR) assays that amplify the DNA of Bartonella spp., Ehrlichia spp., Anaplasma phagocytophilum, Chlamydophila felis, Mycoplasma spp., Toxoplasma gondii, and feline herpesvirus 1 (FHV-1) were applied to tissue digests. DNA of those pathogens assessed was not amplified from tissue.  相似文献   

Preoperative factors associated with hypotension in young anaesthetised dogs undergoing elective desexing          下载免费PDF全文

RS Costa  AL Raisis  G Hosgood  GC Musk 《Australian veterinary journal》2015,93(4):99-104

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Fibrinolytic Responses of the Equine Peritoneum to Abdominal Surgery,Surgical Trauma,and Intraperitoneal Sodium Hyaluronate     

Fred J. Caldwell  P.O. Eric Mueller 《Journal of Equine Veterinary Science》2010

Postoperative abdominal adhesions are known to present clinical challenges to the surgeon. Adhesion formation is a balance modulated by the fibrinolytic system. The key components involved are the tissue plasminogen activators (tPAs) and plasminogen activator inhibitors (PAI-1 and PAI-2). Sodium hyaluronate (HA) has been shown to reduce the incidence and severity of adhesions in horses. The objectives of this study were to measure tPA and PAI-1 activity in equine peritoneum and evaluate the effect of 0.4% HA solution on local tPA and PAI-1 activity. An exploratory laparotomy was performed and local serosal trauma was induced by using an established abrasion model. Our study involved two groups: in the first group (n = 6) 0.4% HA was used in all intestinal manipulations, whereas in the second group (n = 6) sterile saline was used. Parietal peritoneum, jejunal seromuscular biopsies at abraded sites (AJ) and nonabraded sites, and peritoneal fluid samples were taken at time 0- and at 30-minute intervals up to 120 minutes. Peritoneum tPA activity was significantly decreased at 60 and 90 minutes. Interestingly, AJ contained significantly higher tPA activity than nonabraded sites at 30-, 60-, 90-, and 120-minute intervals in control horses. The increase in tPA activity with AJ in treated (HA) horses was significantly attenuated as compared with the control (saline). Detectable levels of PAI-1 activity could not be identified in our samples. The results of our study indicate that exploratory celiotomy in horses is associated with a significant decrease in peritoneal tPA activity, and HA significantly decreases the fibrinolytic response of the jejunum to surgical trauma. Further characterization of these responses will hopefully lead to new pharmacologic strategies for adhesion prevention.  相似文献   

Quantum statistical corrections to dynamic nuclear magnetic resonance     

LJ Mueller  DP Weitekamp 《Science (New York, N.Y.)》1999,283(5398):61-65

A quantum statistical treatment of the chemical exchange between molecular eigenstates or conformations revealed previously unsuspected dynamic terms in the spin Hamiltonian operator that describes fast exchange. These terms resulted from the effect of nuclear spin on rotational and vibrational relaxation. With the traditional theory, an interpretation of new carbon-13 nuclear magnetic resonance measurements of the chemical shift of methylcyclohexane in solution showed fast-exchange equilibrium constants that were inconsistent with the slow-exchange free-energy difference and were spread over a range of 30 percent for the various carbon-13 positions. Modeling of the new terms indicated that they have the correct magnitude and temperature dependence to reconcile these inconsistencies.  相似文献   

Influence of sotalol on the time constant of isovolumic left ventricular relaxation in anesthetized dogs.     

R W Seidler  K Mueller  T Nakayama  R L Hamlin 《American journal of veterinary research》1999,60(6):717-721

OBJECTIVE: To determine the effects of various doses of sotalol on myocardial relaxation in healthy dogs. ANIMALS: 12 healthy adult mixed-breed dogs anesthetized with thiopental and alpha-chloralose. PROCEDURES: Left ventricular pressure (LVP), aortic pressure, and aortic flow velocity were measured. The time constant of isovolumic relaxation (tau) was determined by means of linear regression of the natural logarithm of LVP and by means of direct measurement from the LVP-versus-time curve. Sotalol was administered IV at cumulative doses of 1, 2, 4, and 8 mg/kg to 6 dogs; the other 6 were used as controls. Mean systolic aortic pressure was used to assess afterload, and maximal rate of increase in LVP versus time (dP/dt) was used as an index of contractility. RESULTS: After administration of the first dose of sotalol, tau was increased significantly, and maximum dP/dt was decreased significantly, compared with baseline values. Administration of additional doses of sotalol did not result in any additional change in tau, but maximum dP/dt increased, and maximum dP/dt after administration of the final dose of sotalol was significantly higher than maximum dP/dt after administration of the first dose. There were no significant changes in mean systolic aortic pressure. CONCLUSIONS AND CLINICAL RELEVANCE: In healthy dogs, sotalol did not have any negative effect on myocardial relaxation beyond those attributable to its beta-blocking properties, despite an increase in intracellular ionized calcium concentration, as suggested by an increase in maximum dP/dt after an initial decrease.  相似文献   

The use of compound 48/80 as a positive control in equine intradermal allergy testing     

Shipstone  Mueller  Bettenay  Mason  & Friend 《Veterinary dermatology》1999,10(4):291-295

The macroscopic and microscopic effects following the intradermal injection of the mast cell degranulator compound 48/80 were investigated in horses. It was found that a 1000 μg mL⁻¹ solution of compound 48/80 could be used as an alternative to histamine as a positive control in equine intradermal allergy tests. An inflammatory cell infiltration was noted on histological examination, following compound 48/80 injection. This inflammatory cell pattern was similar to that noted for Type-I hypersensitivity.  相似文献   

Characterization and Cryoprotection of Invasive Silver Carp (Hypophthalmicthys molitrix) Protein Hydrolysates     

Jason P. Mueller 《Journal Of Aquatic Food Product Technology》2013,22(1):131-143

ABSTRACT

Silver carp (Hypophthalmicthys molitrix) is regarded as an invasive, underutilized freshwater fish causing environmental and economic complications along the U.S. Mississippi River System. In this study, silver carp protein hydrolysates (FPH) were obtained from 30, 60, 90, 120, and 240 min hydrolysis with Protamex®. Amino acid composition showed polar amino acids, including Asp and Glu, and freed hydrophobic residues in FPH-90 and FPH-240. Protein surface hydrophobicity of FPH increased with increasing degree of hydrolysis. Cryoprotection was evaluated using a muscle (mince) food system with 6% FPH (w/w) from each hydrolysis time condition, an untreated mince (CTRL), and 8% (w/w) 1:1 sucrose-sorbitol (SUSO), respectively. After six freeze-thaw cycles (D7), all FPH treatments had lower (p < 0.05) expressible moisture, indicating strong water-holding capacity by the FPH. FPH formulations also imparted antifreeze activity equal to or better than SUSO, with the FPH-90 exhibiting higher (p < 0.05) proportion (43.9%) of unfrozen water at D7. Results from this study provide preliminary evidence for development of effective cryoprotectants using an underutilized, invasive fish species that can be exploited for environmental and economic gain in the form of value-added ingredients and further provide opportunities to understand the fundamental physicochemical properties governing cryoprotection of FPH in a frozen mince system.  相似文献   

Thiamethoxam and imidacloprid drench applications on sweet orange nursery trees disrupt the feeding and settling behaviour of Diaphorina citri (Hemiptera: Liviidae)          下载免费PDF全文

Marcelo P Miranda  Pedro T Yamamoto  Rafael B Garcia  João PA Lopes  João RS Lopes 《Pest management science》2016,72(9):1785-1793

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乳牛舍内外环境空气中需氧菌,厌氧菌以及产气荚膜杆菌的定量分析   总被引：7，自引：0，他引：7  

柴同杰 Muell.  W 《中国兽医学报》1999,19(6):612-615

应用Andersen-多层级微生物收集器和KS-92 液体喷冲器,对乳牛舍内、外空气细菌含量,即厌氧菌、需氧菌总数以及产气荚膜杆菌(魏氏梭菌)进行了定性定量分析。结果表明,舍内空气中厌氧菌总数达到2098～4 295 个/m 3 ,其中魏氏梭菌为0～5.5 个/m 3 (Andersen-收集器);同时在舍内空气中,需氧菌总数为2050～18 094 个/m 3 。在舍邻近(4 m 处)的环境空气中厌氧菌总数为239～2 282 个/m 3 ,其中魏氏梭菌0～2.0个/m 3 ;需氧菌总数为297～4 276 个/m 3 。结果证明,舍内环境的细菌能向舍外环境传播,舍内、外环境微生物含量的高低浮动反映了舍内的卫生状况。  相似文献   

产气荚膜梭状芽孢杆菌气悬状态下存在形式的研究   总被引：1，自引：0，他引：1  

柴同杰  马瑞华 《中国预防兽医学报》1999,21(5):362-364

产气荚膜梭状芽孢杆菌是动物舍空气粪便污染的指示菌种,他们的含量反映了动物舍卫生状况以及动物体相应疾病的可能感染。通过对 Ｋ Ｓ９２ 喷冲器空气样品加热 ８０℃,２０ 分钟处理,结果证明该菌群几乎 １００％ 以芽孢形式气悬存在。  相似文献