排序方式： 共有33条查询结果，搜索用时 31 毫秒
1.
Beth A. Snyder Breno Leite John Hipskind Larry G. Butler Ralph L. Nicholson 《Physiological and Molecular Plant Pathology》1991,39(6)
Microspectrophotometry was performed on intact, pigmented vesicle-like inclusions within living sorghum cells that were accumulating phytoalexins as a response to attempted fungal infection. The results indicate that the deoxyanthocyanidin phytoalexins are present in inclusions. Moreover, the phytoalexin concentration within a single inclusion, based on luteolinidin, was calculated to be 0·15 m. The amounts of luteolinidin and apigeninidin in cells involved in the phytoalexin response at individual infection sites were also determined. The data showed that luteolinidin accumulated to levels of 0·48–1·20 ng/cell whereas apigeninidin accumulated to levels of 0·24–0·91 ng/cell. The results of both analyses confirmed that at the infection site the deoxyanthocyanidins accumulate to levels in substantial excess of those required for inhibition of the fungus Colletotrichum graminicola. 相似文献
2.
Lima Pedro Paulo Arcanjo Narciso Luis Gustavo Alcindo Jefferson Filgueira Deschk Maurício Ciarlini Paulo Cesar dos Santos Paulo Sérgio Patto de Almeida Breno Fernando Martins 《Veterinary research communications》2022,46(1):27-35
Veterinary Research Communications - Propofol is a widely used drug in veterinary medicine to induce anesthesia; as well as the chosen compound for protocols of intravenous anesthesia. The present... 相似文献
3.
4.
5.
Alberto Cesarani Ivan Pocrnic Nicol P. P. Macciotta Breno O. Fragomeni Ignacy Misztal Daniela A. L. Lourenco 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2019,136(1):40-50
We investigated the effects of different strategies for genotyping populations on variance components and heritabilities estimated with an animal model under restricted maximum likelihood (REML), genomic REML (GREML), and single‐step GREML (ssGREML). A population with 10 generations was simulated. Animals from the last one, two or three generations were genotyped with 45,116 SNP evenly distributed on 27 chromosomes. Animals to be genotyped were chosen randomly or based on EBV. Each scenario was replicated five times. A single trait was simulated with three heritability levels (low, moderate, high). Phenotypes were simulated for only females to mimic dairy sheep and also for both sexes to mimic meat sheep. Variance component estimates from genomic data and phenotypes for one or two generations were more biased than from three generations. Estimates in the scenario without selection were the most accurate across heritability levels and methods. When selection was present in the simulations, the best option was to use genotypes of randomly selected animals. For selective genotyping, heritabilities from GREML were more biased compared to those estimated by ssGREML, because ssGREML was less affected by selective or limited genotyping. 相似文献
6.
Cruvinel Leonardo Bueno Ayres Henderson Zapa Dina María Beltrán Nicaretta João Eduardo Couto Luiz Fellipe Monteiro Heller Luciana Maffini Bastos Thiago Souza Azeredo Cruz Breno Cayeiro Soares Vando Edésio Teixeira Weslen Fabricio de Oliveira Juliana Silva Fritzen Juliana Tomazi Alfieri Amauri Alcindo Freire Roberta Lemos Lopes Welber Daniel Zanetti 《Tropical animal health and production》2020,52(2):777-791
The present study attempted to verify the prevalence of and risk factors for diarrhea-causing agents in dairy calves from Brazil. Additionally, ages with a higher risk of occurrence for each agent were verified by means of the receiver operating characteristic (ROC) curve. The collections were performed on 39 farms, belonging to 29 municipalities located in eight states of Brazil. It was possible to conclude that the prevalence of Coronavirus, Rotavirus, Cryptosporidium spp., Eimeria spp., and nematodes was 7.20% (95% CI 4.54–9.78), 6.37% (95% CI 3.85–8.89), 51.52% (95% CI 45.26–55.57), 3.46% (95% CI 2.24–4.67), and 3.46% (95% CI 2.24–4.67), respectively. Ages with higher probabilities of occurrence of these diseases in calves were <?10, >?8, >?6, >?37, and >?36 days, respectively. Diarrhea occurred more significantly (P?<?0.0001) in animals less than 21 days old and mainly on those receiving milk through automatic feeders (P?<?0.001). Cryptosporidium spp. were a risk factor for the occurrence of Rotavirus, and vice versa (P?=?0.0039) and presented a positive correlation with Coronavirus (P?=?0.0089). Calves that drink water from rivers, streams, and ponds had a higher chance of being infected by Eimeria spp. (P?<?0.0001), as well as developing infection by nematodes (P?<?0.0001). The results found in this study highlight the importance of studying the agents of diarrhea together, once they act as coinfection where the losses triggered for the owners will involve some of these agents simultaneously.
相似文献7.
8.
Geovanni Dantas Cassali Lidianne Narducci Monteiro Conrado de Oliveira Gamba Karine Araújo Damasceno Cecília Bonolo de Campos Breno Souza Salgado 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2015,44(3):448-451
This is a report on the cytologic analysis of the mammary papillar discharge in a 7‐year‐old female Doberman dog with an invasive micropapillary carcinoma. Cytologic evaluation of nipple discharge is a well‐known method for the rapid diagnosis of breast cancer in women. However, there is no previous report regarding the use of this technique for assessing mammary tumors in dogs. The aim of this study was to describe the use of mammary papillar discharge cytology for diagnosing a micropapillary carcinoma in a dog. Cytologically, evaluation of the papillar discharge revealed cells arranged in clusters in a papillary pattern or in a morula‐like arrangement, suggesting the diagnosis of a micropapillary carcinoma, which was subsequently confirmed by histopathology. Thus, mammary papillar discharge cytology should be considered as an ancillary method for evaluating mammary diseases in dogs. 相似文献
9.
Breno S. Salgado Lidianne N. Monteiro Márcia M. Colodel Fernanda C. Figueiroa Luisa M. Soares Suely Nonogaki Rafael M. Rocha Noeme S. Rocha 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2013,42(3):382-385
Mammary invasive micropapillary carcinoma is a rare variant of mammary carcinoma that was recently recognized in dogs. The cytologic features and biologic behavior of such neoplasms in dogs have not yet been widely discussed in the veterinary literature. We report the clinical, cytologic, and histologic features of a canine micropapillary carcinoma in a 13‐year‐old female mongrel dog. The mammary region presented with extreme local pain, severe edema and erythema, and multifocal epidermal ulceration, which is typical for an inflammatory mammary carcinoma. Fine‐needle aspirates were highly cellular and consisted of individual cells and papillary cell clusters with characteristics of malignant epithelial cells. Histologic examination revealed neoplastic cells arranged in small papillae without fibrovascular cores, sometimes inside clear lymphatic spaces, indicating lymphovascular invasion. Regional lymph node evaluation revealed metastatic cells. Due to deteriorating clinical condition the dog was euthanatized 5 months after mastectomy. At necropsy, metastatic neoplastic mammary cells were found in popliteal and mediastinal lymph nodes, the right femoral biceps muscle, liver, heart, lungs, and urinary bladder. 相似文献
10.
Breno Tenório Leite Nicolle Figueira Robaina Luis Gustavo Teixeira dos Reis Annibal Duarte Pereira Netto Ricardo Jorgensen Cassella 《Water, air, and soil pollution》2012,223(3):1303-1313
The present work describes a detailed study about the adsorption of malachite green (MG) by a polyether-type polyurethane
foam (PUF) using sodium dodecylsulfate (SDS) as a carrier. The adsorption process was based on the formation of a hydrophobic
ionic-pair between the MG cationic dye and the dodecylsulfate anion, which presented high affinity for the PUF. The manifold
employed in the study was built up by adjusting a cylinder of PUF with 200 mg in the arm of an overhead stirrer, which was
soaked (and stirred) in the solution containing the dye and SDS. The adsorption process was characterized in relation to equilibrium
and kinetic aspects. Langmuir (r
2 = 0.842) and Freundlich (r
2 = 0.996) isotherms were also employed for modeling the system as well as the Nernst partition law (r
2 = 0.999). A study about the recovery of MG and the PUF regeneration was conducted, and the acetonitrile was the most efficient
solvent for the desorption of the adsorbed ionic pair. The obtained results showed that the concentration of SDS added to
the medium plays an important role on the adsorption process, which can be better described by employing a second-order kinetic
model. 相似文献