Functional metastatic parathyroid adenocarcinoma in a dog     

Erin N. Kishi  Shannon P. Holmes  Jeffrey R. Abbott  Nicholas J. Bacon 《The Canadian veterinary journal. La revue veterinaire canadienne》2014,55(4):383-388

A 12-year-old dachshund dog was presented for persistent hypercalcemia and hyperparathyroidism despite bilateral parathyroidectomy. Magnetic resonance imaging of the head, neck, and cranial mediastinum identified an increased number of cranial mediastinal lymph nodes with heterogeneous signal intensity. Hypercalcemia and hyperparathyroidism resolved after surgery to remove multiple cranial mediastinal lymph nodes, one of which contained presumed metastatic parathyroid tissue.  相似文献   

Microscopy Observations of Habitable Space in Biochar for Colonization by Fungal Hyphae From Soil     

Noraini M Jaafar  Peta L Clode  Lynette K Abbott 《中国农业科学(英文版)》2014,(3):483-490

Biochar is a potential micro-environment for soil microorganisms but evidence to support this suggestion is limited. We explored imaging techniques to visualize and quantify fungal colonization of habitable spaces in a biochar made from a woody feedstock. In addition to characterization of the biochar, it was necessary to optimize preparation and observation methodologies for examining fungal colonization of the biochar. Biochar surfaces and pores were investigated using several microscopy techniques. Biochar particles were compared in soilless media and after deposition in soil. Scanning electron microscopy （SEM） observations and characterization of the biochar demonstrated structural heterogeneity within and among biochar particles. Fungal colonization in and on biochar particles was observed using light, fluorescence and electron microscopy. Fluorescent brightener RR 2200 was more effective than Calcofluor White as a hyphal stain. Biochar retrieved from soil and observed using fluorescence microscopy exhibited distinct hyphal networks on external biochar surfaces. The extent of hyphal colonization of biochar incubated in soil was much less than for biochar artificially inoculated with fungi in a soilless medium. The location of fungal hyphae was more clearly visible using SEM than with fluorescence microscopy. Observations of biochar particles colonized by hyphae from soil posed a range of difficulties including obstruction by the presence of soil particles on biochar surfaces and inside pores. Extensive hyphal colonization of the surface of the biochar in the soilless medium contrasted with limited hyphal colonization of pores within the biochar. Both visualization and quantification of hyphal colonization of surfaces and pores of biochar were restricted by two-dimensional imaging associated with uneven biochar surfaces and variable biochar pore structure. There was very little colonization ofbiochar from hyphae in the agricultural soil used in this study.  相似文献   

Effect of different methods of selection on the background, attitudes and career plans of first year veterinary students     

Heath TJ  Hyams J  Baguley J  Abbott KA 《Australian veterinary journal》2006,84(6):217-222

OBJECTIVES: To compare the family, educational and animal-related backgrounds and career aspirations of students who were selected on the basis of academic criteria with those selected using additional criteria. METHODS: Questionnaires were completed during class time in the first few weeks of enrolment by incoming veterinary students at the University of Sydney, who had been selected on the basis of academic background, and at Charles Sturt University, selected using more broadly-based criteria. The data were transferred to an Excel spreadsheet, and frequency distributions and chi2 statistics estimated using the SAS System for Windows 8. RESULTS: Students selected principally on academic criteria alone had higher average UAI scores, were more likely to have completed high school in a capital city, and to have parents with higher education levels than those selected using additional criteria. Both groups indicated that their choice of veterinary science was based largely on their affinity for animals and keenness to work in a veterinary practice. However, those at CSU placed much greater importance than those at Sydney on a desire to live and work in a rural area, and a desire to help farmers. The broad-based selection methods were the main reasons for students applying to CSU whereas the reputation of the university was the main attraction for Sydney students. Two-thirds of CSU students, but one-third of Sydney students, planned to enter rural mixed practice when they graduated, and most planned to stay for at least 10 years. Conversely, no CSU students, but 42% of those at Sydney, planned to enter small animal practice initially. The percentage planning to work full-time in the first, fifth and tenth year after graduation was not significantly different between the two groups. CONCLUSIONS: Criteria which included actual experience with farm animals have resulted in the selection of more students who plan to enter and remain in rural mixed practice. Further studies over the longer term will be necessary to assess the extent to which these plans are realized.  相似文献   

N-terminal atrial natriuretic peptide immunoreactivity in plasma of cats with hypertrophic cardiomyopathy     

MacLean HN  Abbott JA  Ward DL  Huckle WR  Sisson DD  Pyle RL 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2006,20(2):284-289

Atrial natriuretic peptide (ANP) is an important regulator of fluid homeostasis and vascular tone. We sought to compare N-terminal ANP immunoreactivity (ANP-IR) in plasma from cats with and without hypertrophic cardiomyopathy (HCM). Secondarily, we evaluated relationships between ANP-IR and echocardiographical variables in cats with HCM and healthy cats. Venous blood samples were obtained from 17 cats with HCM and from 19 healthy cats. Plasma ANP-IR concentration was determined by an enzyme-linked immunoassay. Two cats with HCM had clinical evidence of congestive heart failure; the remainder had subclinical disease. Plasma ANP-IR concentration was higher in cats with HCM (3,808 +/- 1,406 fmol/L, mean +/- SD) than in control cats (3,079 +/- 1,233 fmol/L), but this difference was not statistically significant (P = .11; 95% confidence interval [CI] = -166 to 1,622). There was a significant, but modest correlation between plasma ANP-IR concentration and left ventricular posterior wall thickness (r = 0.42; P = .01). Additionally, plasma ANP-IR concentration was weakly correlated with left atrial size (r = 0.35; P = .03). A linear regression model was developed to further explore these relationships. Atrial size and wall thickness were included in the model; the 2 explanatory variables had an interactive effect on plasma ANP-IR concentration (R2 = 0.27; P = .02). There was no appreciable correlation between plasma ANP-IR concentration and any other echocardiographical variable. In a population that included cats with subclinical disease, those with HCM did not have significantly higher plasma ANP-IR concentration than did healthy cats. An exploratory multivariable regression analysis suggested a linear relationship between ANP-IR concentration and atrial size, wall thickness, and their interaction.  相似文献   

Predicting perchlorate exposure in milk from concentrations in dairy feed     

Rice CP  Baldwin Vi RL  Abbott LC  Hapeman CJ  Capuco AV  Le A  Bialek-Kalinski K  Bannerman DD  Hare WR  Paape MJ  McCarty GW  Kauf AC  Sadeghi AM  Starr JL  McConnell LL  Van Tassell CP 《Journal of agricultural and food chemistry》2007,55(21):8806-8813

Perchlorate has been detected in U.S. milk samples from many different states. Applying data from a recently reported 9-week experiment in which 16 Holstein dairy cows were administered perchlorate allowed us to derive an equation for the dose-response relationship between perchlorate concentrations in feed/drinking water and its appearance in milk. Examination of background concentrations of perchlorate in the total mixed ration (TMR) fed in addition to the variable dose supplied to treated cows as a ruminal infusate revealed that cows receive significant and variable exposure to perchlorate from the TMR. Weekly examination of the TMR disclosed that a change in ingredients midway through the experiment caused a significant (78%) change in TMR perchlorate concentration. Analyses of the ingredients comprising the TMR revealed that 41.9% of the perchlorate came from corn silage, 22.9% came from alfalfa hay and 11.7% was supplied by sudan grass. Finally, USDA Food and Nutrition Survey data on fluid milk consumption were used to predict potential human exposure from milk that contained concentrations of perchlorate observed in our previous dosing study. The study suggests that reducing perchlorate concentration in dairy feed may reduce perchlorate concentrations in milk as well as the potential to reduce human exposure to perchlorate in milk.  相似文献   

Science and government. Navigating the anthropocene: improving Earth system governance     

Biermann F  Abbott K  Andresen S  Bäckstrand K  Bernstein S  Betsill MM  Bulkeley H  Cashore B  Clapp J  Folke C  Gupta A  Gupta J  Haas PM  Jordan A  Kanie N  Kluvánková-Oravská T  Lebel L  Liverman D  Meadowcroft J  Mitchell RB  Newell P  Oberthür S  Olsson L  Pattberg P  Sánchez-Rodríguez R  Schroeder H  Underdal A  Vieira SC  Vogel C  Young OR  Brock A  Zondervan R 《Science (New York, N.Y.)》2012,335(6074):1306-1307

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OCCURRENCE OF AMBER NEAR TRENTON,N.J     

Abbott CC 《Science (New York, N.Y.)》1883,1(21):594

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THE COLOR-SENSE IN FISHES     

Abbott CC 《Science (New York, N.Y.)》1884,4(87):336-339

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Mapping of Malt Endopeptidase, NADH Diaphorase and Esterase Loci on Barley Chromosome 3L   总被引：1，自引：0，他引：1  

J. R. Guerin    R. C. M. Lance    A. H. D. Brown  D. C. Abbott 《Plant Breeding》1994,112(4):279-284

Isoelectric focusing (IEF) and immunoblotting were used to detect genetic variants of malt endopeptidase (MEP1), an enzyme related to malting quality in barley and coded by the CepB locus on barley chromosome 3 (= 3H). A variant was found in a Turkish accession of wild barley (Hordeum vulgare ssp. spontaneum). The self progeny of a hybrid between this accession and the barley cultivar ‘Clipper’ were analyzed for recombination between the CepB locus and other isozyme loci. The estimates of recombination linked the CepB locus to an NADH diaphorase locus (Ndh2), which in turn was linked to the seedling esterase complex (Est1, Est2, and Est4) situated near the distal end of the long arm of chromosome 3. The Ndh2 locus was independent of two other NADH dehydrogenase loci (Ndh3, Ndh5) which were mapped on barley chromosome 5 (= 1H) in relation to the three hordein loci (Hor1, Hor2, and Hor3).  相似文献   

A novel barley scald resistance gene: genetic mapping of the Rrs15 scald resistance gene derived from wild barley, Hordeum vulgare ssp. spontaneum     

R. K. Genger    K. Nesbitt    A. H. D. Brown    D. C. Abbott  J. J. Burdon 《Plant Breeding》2005,124(2):137-141

Most genes for resistance to barley leaf scald map either to the Rrs1 locus on the long arm of chromosome 3H, or the Rrs2 locus on the short arm of chromosome 7H. Other loci containing scald resistance genes have previously been identified using lines derived from wild barley, Hordeum vulgare ssp. spontaneum. A single dominant gene conditioning resistance to scald was identified in a third backcross (BC3F3) line derived from an Israeli accession of wild barley. The resistance gene is linked to three microsatellite markers that map to the long arm of chromosome 7H; the closest of these loci, HVM49, maps 11.5 cM from the resistance gene. As no other scald resistance genes have been mapped to this chromosome arm, it is considered to be a novel scald resistance locus. As the Acp2 isozyme locus is linked to this scald resistance locus, at 17.7 cM, Acp2 is assigned to chromosome 7H. Molecular markers linked to the novel scald resistance gene, designated Rrs15, can be used in breeding for scald resistance.  相似文献