Flow cytometric patterns in blood from dogs with non-neoplastic and neoplastic hematologic diseases using double labeling for CD18 and CD45     

Comazzi S  Gelain ME  Spagnolo V  Riondato F  Guglielmino R  Sartorelli P 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2006,35(1):47-54

BACKGROUND: In dogs, flow cytometry is used in the phenotyping of immunologic cells and in the diagnosis of hemic neoplasia. However, the paucity of specific antibodies for myeloid cells and B lymphocytes and of labeled antibodies for multicolor techniques limits the ability to detect all leukocyte subpopulations. This is especially true for neoplastic and precursor cells. CD18 and CD45 are expressed on all leukocytes and are involved in cell activation, and together could be useful in helping determine cell lineage. OBJECTIVES: The purpose of this study was to double label canine blood for CD18 and CD45 and to use the differential expression of antigens to identify leukocyte populations in dogs with non-neoplastic and neoplastic hematologic diseases. METHODS: A template was developed using blood samples from 10 clinically healthy dogs and a back-gating technique. Differential leukocyte counts obtained with the template were compared with those obtained by manual and automated methods on blood samples from 17 additional healthy dogs. Blood samples obtained from 9 dogs with non-neoplastic (reactive) hematologic diseases and 27 dogs with hemic neoplasia were double stained for CD18 and CD45 using mouse anticanine CD18 monoclonal antibody (mAb) plus phycoerythrin-conjugated rat anticanine CD45 mAb and fluorescein isothiocyanate-conjugated rabbit antimouse IgG. Hemic neoplasms were diagnosed by cell morphology, and immunophenotypic and cytochemical markers. RESULTS: With the double label, neutrophils, eosinophils, monocytes, and T- and B-lymphocytes were identified. In reactive disorders, a population of activated neutrophils with high CD45 and CD18 expression was detected. In hemic neoplasia, cell lineage was easily determined, even in acute leukemia. CONCLUSIONS: Double labeling for CD18/CD45 may be useful as a screening method to evaluate hematologic diseases and help determine cell lineage, and to aid in the selection of a panel of antibodies that would be useful for further analysis.  相似文献   

Soil organic matter dynamics and losses in manured maize-based forage systems     

Chiara Bertora  Laura Zavattaro  Dario Sacco  Stefano Monaco  Carlo Grignani 《European Journal of Agronomy》2009,30(3):177-186

Soil organic matter (SOM) produces positive effects on multiple soil properties. Increasing its level also provides an opportunity to reduce atmospheric concentration of carbon dioxide (CO₂). Recycling animal manure and returning crop residue are among the main practices to enhance organic carbon (C) stock in arable croplands. This study analysed data of soil organic carbon (SOC) stocks from a medium-term field trial (established in 1992) through a Hénin–Dupuis-based equation to determine the proportion of different organic materials retained in the soil as SOM.The treatments included in the experiment simulated different typical management techniques and implied the application to the soil of various organic materials, i.e. cattle slurry, cattle farmyard manure, maize straw, root, maize and ley stubble. Soil organic carbon and total nitrogen (N) (Kjeldhal N) were measured in the 0–30 cm layer during spring 1999 and spring 2003. The relationship between SOC and N stocks measured in 1999 and 2003 and the annual additions of C and N was described by the Hénin–Dupuis-based equation, assuming the presence of two C and N pools (stable and fresh).Our results showed that the application of farmyard manure, slurry and maize straw induced higher C and N content compared to the application of urea without return of crop residue. The different levels of urea application did not produce any significant difference in C and N soil content.We found that approximately 2% of SOC is lost to the atmosphere annually. Furthermore, the amount of C and N retained in the soil each year varied by organic materials: 46% C and 44% N with farmyard manure, 26% C and 11% N with slurry, 28% C and 10% N with root and 6% C with maize straw and ley stubble.These results were used to inform an estimate of C lost or removed to/from atmosphere following manure application and crop residue return for the compilation of greenhouse gas inventories. We found that the most C conservative management is the production and spreading of farmyard manure and that increasing amounts of mineral N fertilizer did not affect the C sequestration extent.  相似文献   

Chalinulasterol, a chlorinated steroid disulfate from the Caribbean sponge Chalinula molitba. Evaluation of its role as PXR receptor modulator     

R Teta  G Della Sala  B Renga  A Mangoni  S Fiorucci  V Costantino 《Marine drugs》2012,10(6):1383-1390

Chalinulasterol (1) a new chlorinated sterol disulfate was isolated from the Caribbean sponge Chalinula molitba. Its structure was elucidated using mass spectrometry and NMR experiments. The possible role of chalinulasterol as modulator of the PXR nuclear receptor was investigated but, in spite of the close structural relationship with the PXR agonist solomonsterol A (2), it showed no activity. The structural requirements for the PXR nuclear receptor activity were discussed.  相似文献   

Seafood mislabelling: comparisons of two western European case studies assist in defining influencing factors,mechanisms and motives     

Dana Miller  Adam Jessel  Stefano Mariani 《Fish and Fisheries》2012,13(3):345-358

The global seafood industry, influenced by consumer demand, is closely linked to the global fishing industry, which determines the variety of fish available for consumption. The recently revealed issue of seafood mislabelling threatens to weaken this link by removing consumer power to influence patterns of fisheries exploitation through informed choice. Recognizing this, there is an urgent need to go beyond the mere documentation of the phenomenon and learn more about the origins of this problem and the nature of factors influencing its occurrence to develop solutions. In an attempt to understand seafood mislabelling more thoroughly in Europe, 226 cod products were purchased from Ireland and the UK, genetically identified using a DNA barcoding technique (COI barcoding gene), and species identification results were compared against product labels. Cod mislabelling proved more severe in Ireland than in the UK (28.4% vs. 7.4%). Moreover, whereas data show that in Ireland, cheaper species are sold as cod, in the UK, threatened Atlantic cod (Gadus morhua) may be sold as ‘sustainably sourced’ Pacific cod. Considering these countries operate under the same EU policies for seafood traceability and labelling, it is likely that this situation has been influenced by heightened consumer awareness in the UK, which has created an environment where mislabelling is discouraged. In addition to identifying samples, traceability information from packaged cod was used to trace products back to supplying companies. Although inconclusive in determining blame, this exercise has demonstrated that using traceability information can add explanatory power when attempting to determine responsibility for the occurrence of mislabelling.  相似文献   

Annual survival probabilities of juvenile loggerhead sea turtles indicate high anthropogenic impact on Mediterranean populations          下载免费PDF全文

Paolo Casale  Daniela Freggi  Giovanni Furii  Carola Vallini  Pasquale Salvemini  Michele Deflorio  Giovanni Totaro  Stefano Raimondi  Caterina Fortuna  Brendan J. Godley 《水产资源保护:海洋与淡水生态系统》2015,25(5):690-700

IMAGING DIAGNOSIS—ULTRASONOGRAPHIC APPEARANCE OF SKELETAL MUSCLE METASTASES IN A DOG WITH HEMANGIOSARCOMA          下载免费PDF全文

Martina Fabbi  Stefano Di Palma  Sabrina Manfredi  Giacomo Gnudi  Francesca Miduri  Eleonora Daga  Gabriele Costantino Melis  Ezio Bianchi  Simone Voccia  Antonella Volta 《Veterinary radiology & ultrasound》2017,58(6):E64-E67

A 13‐year‐old spayed female German shepherd dog was presented for acute onset of lethargy, anorexia, and disseminated erythematous skin lesions. Thoracic radiographs and abdominal ultrasonographic findings were consistent with metastatic hemangiosarcoma. Multiple, ill‐defined, irregularly shaped hypoechoic nodules were also detected within the thoracic and abdominal wall. Hemangiosarcoma metastases to the skeletal muscle were confirmed based on histopathological examination. Multivisceral involvement was also confirmed by necropsy. Metastatic neoplasia should be considered as a differential diagnosis for dogs with ill‐defined, irregular, hypoechoic, intramuscular nodules.  相似文献   

Effect of three safeners on sulfur assimilation and iron deficiency response in barley (Hordeum vulgare) plants          下载免费PDF全文

Maria Luce Bartucca  Silvia Celletti  Stefania Astolfi  Tanja Mimmo  Stefano Cesco  Ivan Panfili  Daniele Del Buono 《Pest management science》2017,73(1):240-245

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Sweet Pepper (Capsicum annuum L.) Organic Seedling Production: The Role of Compost,Cultivar, and Protein Hydrolyzate     

Elena Testani  Gabriele Campanelli  Fabrizio Leteo  Corrado Ciaccia  Stefano Canali  Fabio Tittarelli 《Compost science & utilization》2017,25(2):112-119

In the past decade, the increasing environmental concerns regarding the use of non-renewable resources, such as peat, for growing media production has led to a search for alternative materials as substrate components. Until now, compost represents the most investigated one. Despite the critical aspects related to compost use (i.e., its high pH, salinity, and potential content of toxic elements), partial peat substitution with this material represents an achievable objective. In this study, green compost was evaluated as a component of peat substrates for organic sweet pepper (Capsicum annuum L.) seedling production. Three compost rates (CR) were compared: 0 (peat without compost), 30, and 60% of compost v/v. Two pepper cultivars, one derived from a local (medium-Adriatic) germplasm (L) and a commercial hybrid (H), were tested. Furthermore, organic fertilizers based on hydrolyzed proteins, of animal (A) and vegetal (V) origin, were compared. Substrates were analyzed for characterization (pH, EC, nutrient contents, heavy metals). Seedling performances were evaluated in terms of size, biomass, nutrient uptake, and toxic element contents. Indices able to assess seedling resistance to transplant stress were also calculated. Results showed that CR60 treatment was able to produce seedlings with the same biomass of control. CR30, instead, assured the same chance to resist the transplanting stress of CR0. The performances of fertilizer A were significantly higher than those of fertilizer V. Local germplasm (L) showed the highest resistance to transplant stress, while H was more performing in nitrogen uptake. The risk of seedling contamination by toxic elements resulted negligible.  相似文献   

Controls on microbial mercury transformations in contaminated sediments downstream of the Idrija mercury mine (West Slovenia) to the Gulf of Trieste (northern Adriatic)     

Mark E. Hines  Stefano Covelli  Jadran Faganeli  Milena Horvat 《Journal of Soils and Sediments》2017,17(7):1961-1971

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Influence of characteristics and extension of a forest road network on the supply cost of forest woodchips     

Raffaele Cavalli  Stefano Grigolato 《Journal of Forest Research》2010,15(3):202-209

A forest road network in northeastern Italy was explored by field investigations to evaluate the cost of covering annual demand of woodchips according to three scenarios. The first scenario (A) considered the current extent of the forest road network (mainly tractor road) and the associated qualitative characteristics; the second scenario (B) evaluated the possibility of increasing the availability of the technical amount of forest biomass by extending the forest road network by three tractor roads (3.9 km); the third scenario (C) considered the impact on woodchip supply of converting 9.3 km of tractor forest road into truck forest road. At a woodchip price of 60 € t⁻¹, the cost–supply curve of scenario C indicated a woodchip amount of 2886 t year⁻¹, which was 561 t year⁻¹ greater than scenario A and 161 t year⁻¹ greater than scenario B.  相似文献