Expression and localization of BCRP,MRP1 and MRP2 in intestines,liver and kidney in horse     

E. TYDÉN  H. BJŐRNSTRŐM  H. TJÄLVE  P. LARSSON 《Journal of veterinary pharmacology and therapeutics》2010,33(4):332-340

Tydén, E., Bj?rnstr?m, H., Tjälve, H., Larsson, P. Expression and localization of BCRP, MRP1 and MRP2 in intestines, liver and kidney in horse. J. vet. Pharmacol. Therap. doi: 10.1111/j.1365‐2885.2009.01140.x. The gene and protein expression and the cellular localization of the ABC transport proteins breast cancer resistance protein (BCRP), multidrug resistance‐associated protein 1 (MRP1) and multidrug resistance‐associated protein 2 (MRP2) have been examined in the intestines, liver and kidney in horse. High gene and protein expression of BCRP and MRP2 were found in the small intestines, with cellular localization in the apical membranes of the enterocytes. In the liver, MRP2 was present in the bile canalicular membranes of the hepatocytes, whereas BCRP was localized in the cytoplasm of hepatocytes in the peripheral parts of the liver lobuli. In the kidney both BCRP and MRP2 were predominantly present in the distal tubuli and in the loops of Henle. In most tissues, the gene and protein expression of MRP1 were much lower than for BCRP and MRP2. Immunostaining of MRP1 was detectable only in the intestines and with localization in the cytoplasm of enterocytes in the caecum and colon and in the cells of serous acini of Brunner’s glands in the duodenum and the upper jejunum. The latter cells were also stained for BCRP, but not for MRP2. Many drugs used in horse are substrates for one or more of the ABC transport proteins. These transporters may therefore have important functions for oral bioavailability, distribution and excretion of substrate compounds in horse.  相似文献   

The prevalence of albuminuria in dogs and cats in an ICU or recovering from anesthesia     

Shelly L. Vaden DVM  PhD  DACVIM  Coral A. Turman DVM  Tonya L. Harris  Steven L. Marks BVSc  MS  MRCVS  DACVIM 《Journal of Veterinary Emergency and Critical Care》2010,20(5):479-487

Objective – To evaluate the prevalence of albuminuria in dogs and cats admitted to the ICU or recovering from an anesthetic event. Design – Prospective clinical study over a 10‐week period in 2003. Setting – Veterinary teaching hospital. Animals – One hundred and five dogs and 22 cats. Interventions – Urine was collected from dogs and cats admitted to the ICU or recovering from an anesthetic event. When possible, a second urine sample was collected approximately 48 hours later from those animals that had albuminuria during the initial screening. Measurements and Main Results – All dog samples and most cat samples were screened for albumin using a commercial point‐of‐care immunoassay. Aliquots of samples that tested positive were stored at –20°C until subsequent albumin quantification via antigen capture ELISA. Albuminuria was detected in 63 of 105 (60.0%) dogs and in 14 of 22 (63.6%) cats; the prevalence was higher in animals admitted to ICU than in those recovering from anesthesia. In subsequent samples from 26 dogs, urine albumin decreased in 20 (76.9%) when compared with the first sample; urine albumin was undetectable in 5 (19.2%). In subsequent samples from 6 cats, 4 (66.7%) had decreases in urine albumin when compared with the first sample; 1 (16.7%) was negative for urine albumin. Eleven of 12 dogs (91.7%) and 3 of 4 cats (75%) that died within 3 days of admission to the ICU had abnormal urine albumin; whereas 52 of 93 (55.9%) and 11 of 18 (61.1%) dogs and cats, respectively, who survived more than 3 days had abnormal urine albumin. Dogs with albuminuria were at increased risk of death. Conclusions – The prevalence of albuminuria in animals admitted to the ICU or recovering from anesthesia is higher than reported previously and transient in some patients. The presence of albuminuria may be a negative prognostic indicator in this population.  相似文献   

Changes in the competence of Quercus robur ‘Fastigiata’ to grow in vitro as affected by seedling rootstocks and differential pruning     

T. R. Marks  Sally E. Simpson 《The Journal of Horticultural Science and Biotechnology》2013,88(5):815-824

Three physiologically distinct forms of the same genotype of Quercus robur ‘Fastigiata’, all derived from adult budwood, were identified following the growth of severely-pruned hedge plants grafted onto juvenile seedling rootstocks. Only explants from the form displaying the juvenile-like characteristic of over-winter leaf retention were capable of establishing sustainable cultures in vitro, although growth was not as rapid as those from a two year old seedling source. Pruning to release correlative inhibition of buds low on the scion framework produced vigorous shoot growth, but explants from these failed to show sustained growth in vitro. Withholding light from stockplants reduced excessive phenolic oxidation in explants taken from flushing unripe shoots, however, despite a beneficial effect on culture initiation, later growth was dependent upon the juvenile- or adult-like physiology of the original explant. A new medium was devised for this subject, which in addition to promoting growth generally, also stimulated the flushing of shoot apices. The relevance to in vitro culture of expression of juvenile habit in the stockplant is discussed.  相似文献   

Clinical evaluation of a cryptococcal antigen latex agglutination test for diagnosis of cryptococcosis in cats     

L Medleau  M A Marks  J Brown  W L Borges 《Journal of the American Veterinary Medical Association》1990,196(9):1470-1473

A commercial cryptococcal antigen latex agglutination test was used to evaluate sera from 20 cats with cryptococcosis and 184 cats without cryptococcosis. Cryptococcal antigen was detected in the sera from 19 of 20 cats with cryptococcosis. Antigen was not detected in sera from any of the cats without cryptococcosis. The test had sensitivity of 95% and specificity of 100%.  相似文献   

Congenital hypotrichosis in a French bulldog     

A. Marks  A. H. M. van den  Broek R. W. Else 《The Journal of small animal practice》1992,33(9):450-452

The occurrence of congenital alopecia in one of a litter of four female French bulldogs is described. With the exception of the hair coat the affected bitch was clinically normal. The distribution of the sparse hair (head, tip of the tail and paws) mimicked that seen in the Chinese crested dog. Histopathological examination of skin biopsies revealed features frequently observed in congenital alopecia - a reduction in number of hair follicles, hypoplasia or absence of epidermal appendages and pronounced follicular hyperkeratosis, abnormalities of collagen and elastic fibres were not detected.  相似文献   

A longitudinal study of veterinary students and recent graduates: 3. Perceptions of veterinary education   总被引：1，自引：1，他引：0  

TJ HEATH  A. LANYON  M. LYNCH-BLOSSE 《Australian veterinary journal》1996,74(4):301-304

Objective To examine the attitudes and opinions on veterinary education at the beginning and end of the veterinary course, and after graduation.
Design Longitudinal study.
Population Students – 154 in all – who began studying veterinary science at The University of Queensland in 1985 and 1986.
Procedure Questionnaires were completed in the first and fifth year of the course and in the second year after graduation. The data were analysed using the SAS System for Windows.
Results When they entered the course, the students were looking forward more to learning about animals than about basic sciences. At fifth year and after graduation most believed that more emphasis should have been placed on all facets of their education except the basic sciences. It may be difficult to increase this emphasis without placing undue pressure on the students, although more than half of the fifth year students and graduates agreed that there is much in the curriculum that is not needed by a practising veterinarian. Only one-third or less agreed that veterinarians are well equipped to practise veterinary science immediately they graduate. There was no relationship between the level of agreement with this statement, and the academic grades obtained.
Conclusions A majority of veterinary graduates do not believe that they are well equipped to practice immediately they graduate. They believe that more emphasis should have been placed on most facets of their education, but, conversely, that there is much in the curriculum that is not needed by a practising veterinarian.  相似文献   

The effect of monensin on the chemotactic function of bovine neutrophils     

KA STEPHENSON  IJ LEAN  TJ O'MEARA 《Australian veterinary journal》1996,74(4):315-317

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Evaluation of Canine Pancreas‐Specific Lipase Activity,Lipase Activity,and Trypsin‐Like Immunoreactivity in an Experimental Model of Acute Kidney Injury in Dogs          下载免费PDF全文

S.E. Hulsebosch  C.A. Palm  G. Segev  L.D. Cowgill  P.H. Kass  S.L. Marks 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2016,30(1):192-199

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EFFECT OF BOLUS SIZE ON DEGLUTITION AND ESOPHAGEAL TRANSIT IN HEALTHY DOGS          下载免费PDF全文

Diane M. Cheney  Stanley L. Marks  Rachel E. Pollard 《Veterinary radiology & ultrasound》2016,57(4):359-365

Contrast videofluoroscopy is the gold standard procedure for evaluating dysphagia in humans, but quantitative measures vary depending on bolus size and consistency. We hypothesized that quantitative measures made during videofluoroscopy of swallowing in dogs would differ between bolus sizes and consistencies. Ten healthy adult dogs were enrolled a prospective, crossover experimental study and underwent contrast videofluoroscopy while swallowing liquid (5, 10, and 15 ml) and canned food (3, 8, and 12 g) boluses. Maximum pharyngeal contraction occurred significantly later with medium solid boluses than with medium liquid boluses, with a mean difference of 0.021 s (adjusted P = 0.042). Upper esophageal sphincter opening occurred significantly earlier with large solid boluses than with medium solid boluses, with a mean difference of 0.018 s (adjusted P = 0.025). Thoracic esophageal transit time was significantly longer with small solid boluses than with small liquid boluses, with a mean difference of 0.68 s (adjusted P = 0.004). Odds of primary esophageal peristalsis occurring were significantly (18.5 times) higher with large solid vs. large liquid boluses (adjusted P = 0.031). No other statistical comparisons reached significance. Based on these results, we recommend a standardized approach to videofluoscopy in dogs with determination of quantitative measures using medium liquid and soft food boluses to minimize effects of size. Furthermore, we conclude that measurements made on liquid swallows should not be directly compared to measurements made on soft food boluses.  相似文献   

Surgical management of refractory nasal aspergillosis using iodine cadexomer dressings in three dogs          下载免费PDF全文

TJ Preston  GL Hosgood  AEH Paul 《Australian veterinary journal》2016,94(11):405-410

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