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1.
The immune responses in control dogs [1 to 4 years of age, body condition score (BCS): 4 to 5 out of 9] were compared to those of aging dogs (based on breed and body size) either categorized as lean (BCS: 4 to 5 out of 9) or obese (BCS: 8 to 9 out of 9). Of interest were the serum titers to the following common agents found in vaccines, canine parainfluenza virus (CPIV), canine parvovirus (CPV), canine distemper virus (CDV), canine respiratory coronavirus (CRCoV), and Bordetella bronchiseptica. There were no statistical differences in the antibodies to CPIV, B. bronchispetica, and CRCoV, among the age/weight categories, nor among the age/weight categories and the time, in days, between the date of sample collection and the date of the last recorded vaccination for CPIV, B. bronchiseptica, CPV, and CDV. For CPV, the control dogs had significantly (P < 0.002) higher serum neutralization (SN) titers than the lean geriatric dogs and the obese geriatric dogs. For CDV SN titers, the only statistically significant (P = 0.01) difference was that the control dogs had higher SN titers than the lean geriatric dogs.  相似文献   
2.
Simian tumor virus isolate: demonstration of cytopathic effects in vitro   总被引:2,自引:0,他引:2  
Several cell lines that were derived from primates and inoculated with virus originally obtained from a spontaneous mammary carcinoma showed cytopathic effects characterized by multinucleation. These cytopathic effects appeared as early as 24 holurs after inoculation. Multinucleated cells contained virus particles characteristic of the original virus isolate.  相似文献   
3.
The Hypocrea lixii/Trichoderma harzianum species aggregate contains a group of taxa (H. lixii /T. harzianum, T. aggressivum, T. tomentosum, T. cerinum, T. velutinum, H. tawa) of which some (e.g. T. harzianum) are important for biocontrol of plant pathogenic fungi in agriculture, whereas others are aggressive pathogens of Agaricus spp. and Pleurotus spp. in mushroom farms (T. aggressivum), or opportunistic pathogens of immunocompromised mammals including humans (T. harzianum). We ch…  相似文献   
4.
Kinetic parameter variability may be sensitive to kinetic model choice, kinetic model implementation or patient‐specific effects. The purpose of this study was to assess their impact on the variability of dynamic contrast‐enhanced computed tomography (DCE‐CT) kinetic parameters. A total of 11 canine patients with sinonasal tumours received high signal‐to‐noise ratio, test‐double retest DCE‐CT scans. The variability for three distributed parameter (DP)‐based models was assessed by analysis of variance. Mixed‐effects modelling evaluated patient‐specific effects. Inter‐model variability (CVinter) was comparable to or lower than intra‐model variability (CVintra) for blood flow (CVinter:[4–28%], CVintra:[28–31%]), fractional vascular volume (CVinter:[3–17%], CVintra:[16–19%]) and permeability‐surface area product (CVinter:[5–12%], CVintra:[14–15%]). The kinetic models were significantly (P<0.05) impacted by patient characteristics for patient size, area underneath the curve of the artery and of the tumour. In conclusion, DP‐based models demonstrated good agreement with similar differences between models and scans. However, high variability in the kinetic parameters and their sensitivity to patient size may limit certain quantitative applications.  相似文献   
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6.
Reptiles are one of the fastest growing sectors in the United States pet industry. Reptile‐associated salmonellosis (RAS) continues to be an important public health problem, especially among children. We investigated an outbreak of human Salmonella infections resulting from serotypes Cotham and Kisarawe, predominately occurring among children. An outbreak of illnesses was identified in persons with exposure to pet bearded dragon lizards. Human and animal health officials, in cooperation with the pet industry, conducted epidemiologic, traceback and laboratory investigations. Onsite sampling was conducted at two US breeding facilities, one foreign breeding facility, and a large pet retail chain. A total of 166 patients in 36 states were identified with illness onset dates from 02/2012–06/2014. The median patient age was 3 years (range, <1–79 years), 57% were aged ≤5 years, and 37% were aged ≤1 year. Forty‐four patients (37%) were hospitalized, predominantly children. Sampling at breeding facilities and a national pet store chain resulted in isolation of outbreak serotypes at each facility; isolation proportions ranged from 2%–24% of samples collected at each facility.Epidemiologic, microbiologic and traceback evidence linked an outbreak of uncommon Salmonella serotypes to contact with pet bearded dragons. The high proportion of infants involved in this outbreak highlights the need to educate owners about the risk of RAS in children and the potential for household contamination by pet reptiles or their habitats. Strategies should be developed to improve breeding practices, biosecurity and monitoring protocols to reduce Salmonella in the pet reptile trade.  相似文献   
7.
Local control is a major challenge in treating canine nasal tumours. Surgical cytoreduction prior to radiation therapy has not been shown to offer a survival advantage. Only one study has previously evaluated the outcome when surgery is performed after radiation, which demonstrated an improved survival time compared with radiation alone. The purpose of this study was to investigate the outcome of surgery after definitive radiation on survival times in dogs with sinonasal tumours. Medical records were retrospectively reviewed for dogs with nasal tumours that received definitive radiation followed by surgery. Information obtained from medical record review included signalment, diagnosis, treatment and outcome. The median survival time was 457 days. No long‐term side effects were observed. These findings suggest that exenteration of the nasal cavity following definitive radiation for treatment of dogs with nasal tumours is well‐tolerated and provides a similar survival duration to previous reports of radiation alone.  相似文献   
8.
ABSTRACT Producers of champignon (Agaricus bisporus) and oyster mushroom (Pleurotus ostreatus) are facing recent incidents of green mold epidemics in Hungary. We examined 66 Trichoderma strains isolated from Agaricus compost and Pleurotus substrate samples from three Hungarian mushroom producing companies by a polymerase chain reaction-based diagnostic test for T. aggressivum, sequence analysis of the internal transcribed spacer region 1 (ITS1) and ITS2 and (selectively) of the fourth and fifth intron of translation elongation factor 1alpha (tef1alpha), and restriction fragment length polymorphism of mitochondrial DNA. Seven Trichoderma species were identified: T. aggressivum f. europaeum (17 isolates), T. harzianum (three isolates), T. longibrachiatum (four isolates), T. ghanense (one isolate), T. asperellum (four isolates), T. atroviride (nine isolates), and a still undescribed phylogenetic species, Trichoderma sp. DAOM 175924 (28 isolates). T. aggressivum f. europaeum was exclusively derived from A. bisporus compost, whereas Trichoderma sp. DAOM 175924 exclusively occurred in the substrate for Pleurotus cultivation. Sequences of the latter strains were co-specific with those for Trichoderma pathogens of P. ostreatus in Korea. The widespread occurrence of this new species raises questions as to why infections by it have just only recently been observed. Our data document that (i) green mold disease by T. aggressivum f. europaeum has geographically expanded to Central Europe; (ii) the green mold disease of P. ostreatus in Hungary is due to the same Trichoderma species as in Korea and the worldwide distribution of the new species indicates the possibility of spreading epidemics; and (iii) on mushroom farms, the two species are specialized on their different substrates.  相似文献   
9.
Toceranib phosphate and piroxicam have individually demonstrated antineoplastic activity. Additionally, non-steroidal anti-inflammatory therapy is often warranted in aged cancer-bearing dogs for management of osteoarthritis comorbidity. As concurrent use may be warranted for a given individual and the adverse event (AE) profile for each can be overlapping (gastrointestinal), a phase I trial was performed in tumour-bearing (non-mast cell) dogs to establish the safety of the combination using a standard 3+3 cohort design. Five dose-escalating cohorts, up to and including approved label dosage for toceranib and standard dosage for piroxicam, were completed without observing a frequency of dose-limiting AEs necessitating cohort closure. Therefore, the combination of standard dosages of both drugs (toceranib, 3.25 mg kg(-1), every other day; piroxicam, 0.3 mg kg(-1) daily) is generally safe. Several antitumour responses were observed. As with single-agent toceranib, label-indicated treatment holidays and dose reductions (e.g. 2.5-2.75 mg kg(-1)) may occasionally be required owing to gastrointestinal events.  相似文献   
10.
High‐grade canine mast cell tumours (HG‐MCT) have a high rate of locoregional relapse. In this study, dogs with HG‐MCT treated with radiation therapy (RT) were retrospectively evaluated to determine the benefit associated with treating the locoregional lymph nodes (LNs). Forty‐two dogs were included. Variables assessed for association with overall survival (OS) and progression‐free survival (PFS) included WHO stage, tumour location and size, LN irradiation (prophylactic, therapeutic or none), LN treatment (yes or no), LN status at RT (metastatic or nonmetastatic) and RT intent (definitive vs palliative). Lower‐stage disease at irradiation was significantly associated with prolonged median PFS (425 vs 125 days for stage 0 vs 1‐4), and OS (615 vs 314 days for stage 0 vs 1‐4). Having any LN treatment and definitive RT were both significantly associated with prolonged OS. In order to evaluate the role of LN irradiation, dogs were divided into subgroups: (a) stage 0 at irradiation with no LN treatment (n = 14), (b) stage 0 at irradiation with prophylactic LN irradiation (n = 6), (c) stage 0 at irradiation but previously stage 2 (n = 5) and (d) stage >0 at irradiation (n = 17). Prophylactic LN irradiation significantly prolonged PFS (>2381 vs 197 days; group B vs A). Interestingly, dogs that were stage 2 and had LN treatment (C) had prolonged OS vs dogs with negative LNs and no LN treatment (A) (1908 vs 284 days; P = .012). This study confirms that prophylactic and therapeutic LN irradiation in dogs with HG‐MCT is beneficial and improves outcome.  相似文献   
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