Possible involvement of salicylic acid in systemic acquired resistance ofCucumis sativus againstSphaerotheca fuliginea     

Gian Guido Conti  Alberto Pianezzola  Guido Violini  Dario Maffi  Anna Arnoldi 《European journal of plant pathology / European Foundation for Plant Pathology》1996,102(6):537-544

The possible involvement of salicylic acid in systemic acquired resistance ofCucumis sativus againstSphaerotheca fuliginea was studied. Cucumber plants were inoculated with tobacco necrosis virus on the cotyledons and the level of endogenous salicylic acid in the first true leaf was determined by gas chromatography. Salicylic acid increased continously from the second day after virus inoculation to the fifth day, when the same leaf was inoculated withSphaerotheca fuliginea. In healthy plants, the efficiency of exogenous salicylic acid in inducing resistance was assayed by applying aqueous solutions at different times beforeSphaerotheca fuliginea inoculation. To evaluate the level of induced resistance, the following parameters were examined by light microscopy: percentage of conidial germination, length of the hyphae derived from single conidia, number of haustoria, percentage of epidermal cells with lignified walls and of necrotic cells underlying fungal hyphae. In treated plants conidial germination was reduced, the total length of the hyphae was shorter, the number of haustoria was lower and the haustorium-containing epidermal cells had more frequently lignified walls. Moreover, an evident increase in callose deposition was observed leading to the formation of oversized papillae around the penetration pegs. These results indicate that the application of salicylic acid before inoculation withSphaerotheca fuliginea reduces the intensity of the infectious process and that salicylic acid is involved in the expression of systemic resistance in cucumber challenged by the biotrophic pathogenSphaerotheca fuliginea.  相似文献   

Compendium of animal rabies prevention and control, 2003     

Jenkins SR  Auslander M  Conti L  Johnston WB  Leslie MJ  Sorhage FE;National Association of State Public Health Veterinarians 《Journal of the American Veterinary Medical Association》2003,222(2):156-161

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Diagnosis and treatment of progressive ethmoidal haematoma (PEH) in horses     

Conti MB  Marchesi MC  Rueca F  Puccetti M 《Veterinary research communications》2003,27(Z1):739-743

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Compendium of animal rabies prevention and control, 2002     

Jenkins SR  Auslander M  Conti L  Johnston WB  Leslie MJ  Sorhage FE;National Association of State Public Health Veterinarians Committee 《Journal of the American Veterinary Medical Association》2002,221(1):44-48

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Dirofilaria repens infection in a dog: diagnosis and treatment with melarsomine and doramectin     

Baneth G  Volansky Z  Anug Y  Favia G  Bain O  Goldstein RE  Harrus S 《Veterinary parasitology》2002,105(2):173-178

Therapy of canine dirofilariois due to Dirofilaria repens is indicated for dogs suffering from clinical signs of this disease, such as dermal swelling, sub-cutaneous nodules and pruritus. It is also important in order to decrease the risk of infection to other dogs and humans in the vicinity of the infected animal when suitable mosquito vectors are present. Combined therapy with the arsenic adulticide melarsomine and the avermectin microfilaricidal doramectin was effective in clearing infection with D. repens in a dog. The number of microfilariae dropped from 17 microl(-1) blood pre-treatment to 7 microl(-1) following the first adulticide injection and reached 0 a day after the microfilaricidal administration. The dog remained negative for D. repens microfilaremia during a follow-up period of 90 days. Euthanasia and necropsy performed 3 months after the initiation of therapy due to a progressive neoplastic disease revealed no evidence of filariae.  相似文献   

A variant of pulmonary alveolar microlithiasis in nackt mice     

Starost MF  Benavides F  Conti CJ 《Veterinary pathology》2002,39(3):390-392

Four adult mutant nackt mice, which demonstrate alopecia and CD4+ T-cell deficiency, and two outbred SENCAR mice (sentinels) were presented for routine health surveillance. Lesions were not observed at necropsy. Microscopically, all four nackt mice demonstrated multiple concretions that were 30-100 microm in diameter, irregularly rounded to oval, nonbirefringent, and amphophilic to basophilic. Many of the concretions appeared attached to or within the alveolar walls of all lung lobes. Approximately half of the concretions had irregular fracture lines. All concretions were periodic acid-Schiff positive, and Von Kassa staining revealed diffuse calcification. None of the concretions were associated with inflammatory cell infiltrates, and metaplastic ossification was not evident. A diagnosis of pulmonary alveolar microlithiasis, a rare disease in both humans and animals, was made based on the size and location of the concretions and the lack of an inflammatory response. This is the first report of a laboratory mouse demonstrating pulmonary alveolar microlithiasis.  相似文献   

Comparative study of ultrasonography and arteriography of the carotid artery of xylazine-sedated and halothane-anesthetized goats     

S W Lee  G H Hankes  R C Purohit  J E Bartels  R E Cartee  L Pablo  J C Conti 《American journal of veterinary research》1990,51(1):109-113

The carotid artery of clinically normal goats was examined, using duplex ultrasonography and arteriography. The diameter of the carotid artery was measured by use of two-dimensional ultrasonography and Doppler ultrasonography, respectively, before and after xylazine administration. The diameter of the artery was also measured by use of an arteriography technique in halothane-anesthetized goats. There was no significant difference between the mean diameter of the carotid artery measured by ultrasonography in conscious nonsedated goats and that determined by arteriography in goats under halothane anesthesia. On the other hand, ultrasonography of xylazine-sedated goats revealed an increase of carotid artery diameter of 20 to 30%. There was no change in the velocity of blood flow after xylazine administration.  相似文献   

Spatio-temporal patterns of parturition of the black rockfish Sebastes inermis in Sendai Bay, northern Japan     

Guido  PLAZA  Satoshi  KATAYAMA  Michio  OMORI 《Fisheries Science》2004,70(2):256-263

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High dose rate interstitial 192-Ir brachytherapy for the treatment of a recurrent dermal vascular hamartoma in a horse     

F. Conti  L. Poujet  M. Delverdier  E. A. Lallemand  J. Benoit 《Equine Veterinary Education》2022,34(8):e337-e343

The successful application of an interstitial brachytherapy course is reported in a 14-month-old male Anglo European Studbook (AES) foal for the treatment of a recurrent dermal vascular hamartoma at the dorsal aspect of the pastern on the right hindlimb. The lesion was irradiated four times over 4 days to a total dose of 28 Gy. Progressive tumour shrinkage and necrosis were observed over 2 months. No significant acute side effect was reported at the end of the treatment, with excellent and long-lasting cosmetic results observed. The only reported late effect was permanent leukotrichia within the treated area, which remained otherwise tumour-free 1224 days after treatment. Results of this report suggest the potential use of radiation therapy (and specifically brachytherapy techniques), as an effective and safe treatment modality for vascular malformations in horses.  相似文献   

Oxidative degradation of lipids during mashing     

Arts MJ  Grun C  de Jong RL  Voss HP  Bast A  Mueller MJ  Haenen GR 《Journal of agricultural and food chemistry》2007,55(17):7010-7014

Although hardly any polyunsaturated fatty acids (PUFAs) are present in the endproduct, the ingredients used for the production of beer contain a high concentration of PUFAs, such as linolic and linolenic acid. These compounds are readily oxidized, resulting in the formation of lipid-derived products that reduce the taste and quality of beer enormously. During mashing relatively high amounts of PUFAs are exposed to atmospheric oxygen at a relatively high temperature. This makes mashing a critical step in the brewing process with regard to the formation of lipid-derived off-taste products. F1 phytoprostane (PPF1) changes in antioxidant capacity and monohydroxy fatty acids (OH-FAs) were used as markers for the detection of oxidative damage to fatty acids during mashing. The pattern of OH-FA formation indicates that enzymatic oxidation of PUFAs is more important than nonenzymatic oxidation during the mashing process. Nevertheless, substantial nonenzymatic radical formation is evident from the increase of specific OH-FAs and PPF1s. It was found that a low oxygen tension reduces oxidative damage and gives a high antioxidant capacity of the mashing mixture. This indicates that mashing should be done under low oxygen pressure.  相似文献