Cardiac disease in guinea pigs     

Cox I  Haworth P 《The Veterinary record》2000,146(21):620

  相似文献   

Identification of Ostertagia ostertagi specific cells in bovine abomasal lymph nodes     

De Marez T  Cox E  Vercruysse J  Goddeeris BM 《Veterinary immunology and immunopathology》2000,73(2):145-154

To investigate the contribution of different bovine cell subpopulations in the development of in vitro induced responses by Ostertagia ostertagi third larval antigen extract (L3), bovine abomasal lymph node cell suspensions were depleted of specific cell populations. The depleted cell suspensions were subsequently assayed for their proliferative responses to O. ostertagi L3 antigen extract. Proliferative responses to O. ostertagi L3 antigen extract were restricted to a CD2+ CD4- CD8- cell population and MHC II+ cells different from B-cells were of major importance. Depletion of CD4, CD8, CD4CD8, IgM or CD21 positive cells did not decrease proliferation to L3 antigen extract. Depletion of gammadelta T-cells, which also comprise a subpopulation of CD2+ CD4- CD8- cells, reduced proliferation to L3 antigen extract only in one animal. The results suggest that either gammadelta T-cells could be involved in the proliferation or that another as yet unidentified population is important for proliferation. The precise role of these populations during infection with O. ostertagi and the mechanism by which these cells may influence the host immune response are important issues that remain to be elucidated.  相似文献   

The F4 fimbrial antigen of Escherichia coli and its receptors   总被引：11，自引：0，他引：11  

Van den Broeck W  Cox E  Oudega B  Goddeeris BM 《Veterinary microbiology》2000,71(3-4):223-244

F4 or K88 fimbriae are long filamentous polymeric surface proteins of enterotoxigenic Escherichia coli (ETEC), consisting of so-called major (FaeG) and minor (FaeF, FaeH, FaeC, and probably FaeI) subunits. Several serotypes of F4 have been described, namely F4ab, F4ac, and F4ad. The F4 fimbriae allow the microorganisms to adhere to F4-specific receptors present on brush borders of villous enterocytes and consequently to colonize the small intestine. Such ETEC infections are responsible for diarrhea and mortality in neonatal and recently weaned pigs. In this review emphasis is put on the morphology, genetic configuration, and biosynthesis of F4 fimbriae. Furthermore, the localization of the different a, b, c, and d epitopes, and the localization of the receptor binding site on the FaeG major subunit of F4 get ample attention. Subsequently, the F4-specific receptors are discussed. When the three variants of F4 (F4ab, F4ac, and F4ad) are considered, six porcine phenotypes can be distinguished with regard to the brush border adhesiveness: phenotype A binds all three variants, phenotype B binds F4ab and F4ac, phenotype C binds F4ab and F4ad, phenotype D binds F4ad, phenotype E binds none of the variants, and phenotype F binds F4ab. The following receptor model is described: receptor bcd is found in phenotype A pigs, receptor bc is found in phenotype A and B pigs, receptor d is found in phenotype C and D pigs, and receptor b is found in phenotype F pigs. Furthermore, the characterization of the different receptors is described in which the bcd receptor is proposed as collection of glycoproteins with molecular masses ranging from 45 to 70 kDa, the bc receptor as two glycoproteins with molecular masses of 210 an 240 kDa, respectively, the b receptor as a glycoprotein of 74 kDa, and the d receptor as a glycosphingolipid with unknown molecular mass. Finally, the importance of F4 fimbriae and their receptors in the study of mucosal immunity in pigs is discussed.  相似文献   

MAGNETIC RESONANCE IMAGING OF THE BRAIN AND COELOMIC CAVITY OF THE DOMESTIC PIGEON (Columba livia domestica)     

April  Romagnano  PhD  DVM  Jonathan T.  Shiroma  DVM  MS  Darryl J.  Heard  BVMS  PhD  Richard D.  Johnson  PhD  Michael R.  Schiering  MD  Christopher R.J.  Mladinich  DVM  MS 《Veterinary radiology & ultrasound》1996,37(6):431-440

The technical feasibility of performing magnetic resonance imaging (MRI) in domestic pigeons was investigated. Imaging was performed with a 1.5 Tesla magnet using a human knee surface coil. The head and coelomic cavity of isoflurane-anesthetized birds were imaged in the dorsal, sagittal, and transverse planes to produce T1-weighted, T2-weighted, and contrast-enhanced T1-weighted images. The birds were then euthanatized, formalin perfused, frozen, and sectioned in the corresponding anatomic planes. The anatomy defined by MRI was correlated with gross anatomic sections made from the same birds. The following CNS structures were identified: cerebral hemispheres, cerebellum, optic chiasm, optic lobes, brain stem, and cranial spinal cord. The cornea, lens, and vitreous were also well differentiated in dorsal section MRI's. The abdominal organs identified included proventriculus, ventriculus, intestines, cloaca, liver, kidneys, spleen, testes, and ovary. The hepatic and renal vasculature were well defined.  相似文献   

Terminology for the description of equine jumping kinematics     

Hilary M. Clayton BVMS  Phd  MRCVS 《Journal of Equine Veterinary Science》1989,9(6):341-348

  相似文献   

Absolute monocyte counts as an aid to early diagnosis of equine herpesvirus 1 (EHV1) infection in Hong Kong thoroughbred horses     

D.K. Mason BVMS  MRCVS  K.L. Watkins BVSc  MRCVS  C.M. Luk 《Journal of Equine Veterinary Science》1989,9(3)

Two isolates of the abortion strain (subtype 1) of equine herpes virus 1 (EHV1) were recovered from nasopharyngeal swabs of 3 Thoroughbreds in training in Hong Kong taken during an outbreak of clinical respiratory disease. There are 2 subtypes of EHV1, the abortion (1) and respiratory strains (2) and serologically it is not possible to differentiate between the 2 due to antigen cross-reactivity.⁴Monocyte counts undertaken by the same experienced technologist on blood films made by a modification of the traditional ‘wedge’ smear taken from blood samples collected from 58 Thoroughbred horses during the outbreak revealed a significant correlation to EHV1 serum titres.This may allow for earlier identification of affected animals during an outbreak especially in situations where virus confirmation facilities are not readily available.  相似文献   

Progestagens in bitches: a review   总被引：1，自引：0，他引：1  

John E.  Cox 《The Journal of small animal practice》1970,11(12):759-778

  相似文献   

Abnormalities of Myelination of the Central Nervous System Associated With Congenital Tremor     

I. D. Duncan BVMS  PhD  MRCVS  MRCPath 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1987,1(1):10-23

  相似文献   

Pharmacologic diagnosis of Horner's Syndrome in the dog     

S Bistner  L Rubin  T A Cox  W E Condon 《Journal of the American Veterinary Medical Association》1970,157(9):1220-1224

  相似文献   

Evaluation of a Hemostasis Model for Teaching Basic Surgical Skills     

DENNIS OLSEN MS  DVM    MICHAEL S. BAUER DVM  Diplomate ACVS    HOWARD B. SEIM DVM  Diplomate ACVS  MOWAFAK D. SALMAN BVMS  PhD  Diplomate ACVPM 《Veterinary surgery : VS》1996,25(1):49-58

The need for alternative methods of teaching veterinary medicine and surgery has increased in recent years because of increasing costs and changing public opinion. For these reasons a hemostasis model was developed that mimics the arteries and veins of the peripheral vascular system, and can be used to teach the basic skills involved in blood vessel ligation and division. This study evaluated the effectiveness of the fluid hemostasis model compared with using live animals for teaching these skills. Forty sophomore veterinary students participated in the study. Two groups of 20 students each received identical instruction in the basic techniques required for vessel ligation and division. The students then completed various exercises using inanimate models to objectively evaluate their psychomotor skills. Both groups then practiced the techniques for equal time periods; one group used the hemostasis model and the other performed a splenectomy on live dogs. After the practice session, the students were videotaped (for later evaluation), as they performed vessel ligations and divisions. The students then repeated the exercises using the inanimate models for evaluation of skills improvement. Questionnaire responses before and after the project were obtained to determine the students' views on the need for inanimate models for teaching purposes. Results of this study indicate that the hemostasis model was as effective as live animals for teaching the basic skills involved in blood vessel ligation. The students' opinions regarding the use of properly designed inanimate models for teaching these skills were dramatically changed.  相似文献