A case of canine discospondylitis and epidural empyema due to Salmonella species     

Ioannis N. Plessas  Philip Jull  Holger A. Volk 《The Canadian veterinary journal. La revue veterinaire canadienne》2013,54(6):595-598

A case of canine discospondylitis and epidural empyema due to Salmonella species is reported. The history, clinical signs, and magnetic resonance imaging were suggestive of discospondylitis and empyema, which was subsequently confirmed by blood cultures. To the authors’ knowledge, this is the first reported case of canine discospondylitis due to Salmonella species.  相似文献   

Effect of endogenous progesterone and oestradiol-17β on the incidence of gastro-oesophageal reflux and on the barrier pressure during general anaesthesia in the female dog     

Tilemahos L Anagnostou DVM  PhD    Ioannis Savvas DVM  PhD    George M Kazakos DVM  PhD    Haralabos N Ververidis† DVM  PhD    Maria-Rea Haritopoulou‡ MD    Timoleon S Rallis§ DVM  PhD  & Dimitris Raptopoulos DVM  PhD  DVA  Diplomate ECVAA 《Veterinary anaesthesia and analgesia》2009,36(4):308-318

Objective To investigate the potential effect of increased blood progesterone (P₄) and oestradiol‐17β (E₂) concentrations on the barrier pressure (BrP) and the incidence of gastro‐oesophageal reflux (GOR) in female dogs under general anaesthesia. Study design Prospective, blinded experimental trial. Animals Seven female, adult, healthy dogs weighing 14–21 kg and aged 1–7 years. Methods Each of the animals was studied under the influence of high blood E₂ and basal P₄ (study O), basal E₂ and high P₄ (study P) and basal E₂ and P₄ (study C) concentrations. Animals were premedicated with acepromazine and anaesthesia was induced with thiopental and maintained with halothane. Lower oesophageal pH was monitored continuously for 1 hour after induction. GOR was defined as oesophageal pH >7.5 or <4. Manometry of the posterior oesophageal sphincter (POS) was then performed using the slow pull‐through technique. Results Acid GOR was detected in only one animal of study O. The three studies did not differ significantly in GOR. Mean BrP was 11.2 (study O), 9.1 (study P) and 11.6 mmHg (study C). No significant differences were detected with respect to mean BrP, intra‐gastric pressure and POS pressure. Conclusions It is unlikely that the increased concentrations of E₂ or P₄ during the normal ovarian cycle influence the functional efficiency of the POS as a major barrier to GOR in healthy, female dogs under general anaesthesia. Clinical relevance The fact that female dogs undergoing obstetrical surgery represented a substantial sub‐group of the animals which developed postoperative benign oesophageal stricture, should probably not be attributed to the effects of increased concentrations of female sex steroid hormones.  相似文献   

Weed control and selectivity in maize (Zea mays L.) with tembotrione mixtures     

Christos A. Damalas  Thomas K. Gitsopoulos  Spyridon D. Koutroubas  Christos Alexoudis  Ioannis Georgoulas 《国际虫害防治杂志》2018,64(1):11-18

Field and pot trials were conducted in two sites of northern Greece (Thermi and Lepti) to study selectivity and weed control in maize (Zea mays L.) with herbicide mixtures based on tembotrione. Treatments included tembotrione (plus isoxadifen-ethyl safener) applied alone at 100 g ai/ha and three mixtures of tembotrione with: (i) rimsulfuron at 10 g ai/ha, (ii) nicosulfuron at 40 g ai/ha and (iii) foramsulfuron at 60 g ai/ha (label rates for weed control in maize). Herbicides were applied at the 7- to 8-leaf growth stage of maize in Thermi and at the 6- to 7-leaf growth stage in Lepti. Six weeks after treatment, control of rhizomatous Sorghum halepense with tembotrione alone was 63% in Thermi and 60% in Lepti, with plants showing the typical bleaching symptoms of the HPPD-inhibiting herbicides. Control of rhizomatous S. halepense with the mixtures was improved from 63% to 86% in Thermi and from 60% to 82% in Lepti compared with the single treatment of tembotrione, with plants showing only the symptoms of reddish/purplish color of the ALS-inhibiting herbicides. Control of common broadleaf weeds of maize, such as Xanthium strumarium, Amaranthus retroflexus, Datura stramonium, and Chenopodium album was excellent (92%–100%) either with tembotrione alone or with the mixtures, with plants showing the typical bleaching symptoms of the HPPD-inhibiting herbicides. None of the mixtures affected the ear length and grain yield of maize. All chemical treatments gave higher grain yield than that of the non-treated control and comparable yield to that of the weed-free control. Grass control (Echinochloa crus-galli, E. phyllopogon, and Setaria viridis) with tembotrione alone was above 90% in the pot experiments which was similar to that achieved with the mixtures. Overall, there was an adequate margin of safety in the use of tembotrione in mixture with ALS-inhibiting herbicides for improved weed control in maize, particularly where rhizomatous S. halepense is problematic.  相似文献   

Characterization and evaluation of chabazite- and mordenite-rich tuffs,and their mixtures as soil amendments and slow release fertilizers     

Michael G. Stamatakis  Ioanna Stefania Stamataki  Spyridoula Giannatou  Charalampos Vasilatos  Foteini Drakou  Ioannis Mitsis 《Archives of Agronomy and Soil Science》2017,63(6):735-747

In the present study, zeolite tuffs of diverse chemistry, mineralogy and origin were characterized and tested for their efficiency as slow release fertilizers (SRF) through a series of leaching tests. Mixtures of zeolite tuffs were created and tested as loamy soil additives, in order to evaluate any synergistic effect on their cation exchange capacity (CEC) and SRF properties. The studied materials were a chabazite-rich tuff (SOR), a mordenite-rich tuff (KIM), 3 mixtures of them (SOR/KIM 30/70, 50/50 and 70/30) and a commercial clinoptilolite-rich tuff (BLG). CEC (sodium acetate method) was 95.7 for BLG, 100.9 for KIM and 92.2 cmol kg^?1 for SOR, while their mixtures displayed intermediate values. SRF values vary, with the SOR/KIM 30/70 exhibiting the slowest NH₄⁺ release in 29 days (1.7%) compared to the control sample (19%). Zeolites promoted PO₄^?3 release, while their selectivity for Mg²⁺ and K⁺ was clearly affected by their different structure and chemistry. BLG exhibited the strongest selectivity for Mg²⁺, having the lowest release (39%). The results demonstrate that mixtures of zeolite tuffs could have a potential use in agricultural processes, by improving parameters like: chemistry, mineralogy, CEC and SRF efficiency, and resulting in the production of a competitive and functional soil additive.  相似文献   

Control of light leaf spot and clubroot in brassica crops using defence elicitors     

Graham R. D. McGrann  Tracy Yoxall  Linda J. Paterson  Jeanette M.G. Taylor  Ioannis G. Birmpilis  Dale R. Walters  Neil D. Havis 《European journal of plant pathology / European Foundation for Plant Pathology》2017,148(2):447-461

Plant defence elicitors are compounds that can induce host defence responses against plant pathogens and offer a novel strategy for disease management. Disease control by elicitors can be inconsistent and is often dependent on the crop, the variety and the environment. The use of foliar application of defence elicitors to control light leaf spot (LLS) disease caused by Pyrenopeziza brassicae in the brassica crops winter oilseed rape (WOSR) and Brussel sprouts was evaluated in field trials across multiple years. Elicitor responses in WOSR varied between years. Yield benefits were also inconsistent and did not reflect the level of disease control. Results with Brussel sprouts were more consistent although variation between variety, trial site and year were observed. In particular the salicylic acid analog Acibenzolar-S-Methyl, in the commercial product Bion®, demonstrated good disease control across the field trial sites in the early maturing Brussel sprout variety Cobus. Levels of LLS were consistently reduced when Bion® was alternated within a standard fungicide programme, applied as an individual spray or in combination with other defence elicitors. When applied as a root drench or seed soak Bion® also reduced symptom development of the soil-borne brassica disease clubroot, caused by Plasmodiophora brassicae, in WOSR. These results indicate that defence elicitors such as Bion® can be used as an additional disease management tool alongside host resistance and standard fungicide programmes to protect brassica crops.  相似文献   

Nitrogen fertilization of poplar plantations on agricultural land: effects on diameter increments and leaching     

Ioannis Dimitriou  Blas Mola-Yudego 《Scandinavian Journal of Forest Research》2017,32(8):700-707

Fast-growing poplar plantations on agricultural land require intensive management activities, often involving fertilization. The present paper aims at investigating the effect of fertilization on growth and on groundwater quality, by examining four trials established in commercial poplar plantations in central and south Sweden. The treatments consisted of nitrogen applications (Urea N46, Tot. N: 46%) in two different dosages, 75 and 150?kg?ha^?1 for two years, and a control, in three replicates (plot size: 20?×?20?m) following a randomized block design. Diameters were measured at each plot at the end of each growing season for the period 2012–2015. At the same time, groundwater pipes were installed in the center of each plot, at ca. 1.5?m depth. Samples were regularly collected and analyzed for NO₃-N and PO₄-P. The results show a large variation in the diameter growth response to nitrogen fertilization and the leaching of poplar plantations after canopy closure. In young plantations, the effect on growth was clear with moderate fertilization rates although it was not observed on sandy soils with already good growth, leading to high nitrogen leaching.  相似文献   

What is your diagnosis? Male pseudohermaphroditism     

Papazoglou LG  Patsikas MN  Brellou G  Vlemmas J 《The Journal of small animal practice》2004,45(9):433, 473-433, 474

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Vertebral telangiectatic osteosarcoma in a dog     

Brellou G  Papaioannou N  Patsikas M  Polizopoulou Z  Vlemmas I 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2004,33(3):159-162

Telangiectatic osteosarcoma (TOS) affecting the seventh cervical vertebra (C7) was diagnosed in a 4-year-old male dog with signs of locomotor dysfunction. Bone lysis and an extradural-extramedullary mass were observed in radiographs and occipital myelograms. The diagnosis was confirmed by histopathologic and immunohistochemical examination of the mass. The tumor was composed of large blood-filled cavities lined by anaplastic stromal cells (malignant osteoblasts). Around the cavities were characteristic tumor giant cells ("bizarre cells"). Immunohistochemically the tumor cells were positive for proliferating cell nuclear antigen. The lining cells of the cysts were negative for von Willebrand factor. The histologic findings in this case of TOS involving C7 were similar to those seen in other cases of TOS in dogs and in people. Immunohistochemistry was a useful tool for assessing malignancy and for ruling out other differential diagnoses.  相似文献   

Evaluation of chemical and integrated strategies as alternatives to methyl bromide for the control of root-knot nematodes in Greece   总被引：3，自引：0，他引：3  

Giannakou IO  Karpouzas DG 《Pest management science》2003,59(8):883-892

Current environmental awareness has led to a greater demand for alternative nematode control strategies. Three field experiments were established to compare management tactics on cucumber in commercial greenhouses naturally infested with root-knot nematodes (Meloidogyne spp). Cucumber rootstocks which have shown resistance to soil-borne diseases were tested to reveal any resistance/tolerance to root-knot nematodes, and integration of these rootstocks with nematicides was investigated. Metham-sodium and 1,3-dichloropropene (1,3-D) provided good control of nematode populations when their application was followed by the application of a non-fumigant nematicide such as cadusafos or oxamyl. Neither fumigant could provide season-long control of nematode populations, and a further application of cadusafos was required for satisfactory control. The efficacy of metham-sodium was significantly increased when injected into soil in comparison with its application through the drip irrigation system. The use of rootstocks resistant to soil-borne fungal pathogens used together with chemical means of nematode control provided promising results for their further use in integrated strategies as alternatives to methyl bromide. However, the latter was the superior treatment for the control of root-knot nematodes in soil infested with residues of galled roots. Dazomet, metham-sodium nor the non-fumigant nematicides oxamyl and fenamiphos could reduce nematode population as efficiently as methyl bromide. None of the chemicals tested except methyl bromide could enter galled roots and kill surviving nematodes.  相似文献   

Chlamydia-induced bilateral ectropion of the inferior eyelids in pigeons     

Bougiouklis P  Papaioannou N  Georgopoulou I  Iordanidis P  Vlemmas I  Lekkas S  Siarkou V 《Avian diseases》2000,44(2):372-378

In this study we described four cases of bilateral ectropion in pigeons that were investigated in Greece. Anemia, leukocytosis, and increased levels of enzymes lactate dehydrogenase, aspartate aminotransferase, creatine phosphokinase, and total serum proteins were found. Chlamydial elementary bodies were observed by modified Ziehl-Neelsen stain in direct smears of conjunctiva, liver, and spleen as well as in yolk sac samples after egg inoculation with eyelid material. Histologically, significant hyperplasia of the conjunctival epithelium was observed. Using immunohistochemical methods, chlamydial antigen was revealed in eyelid, liver, and spleen paraffin sections. This study suggests that Chlamydia spp. was the causative agent that induced ectropion.  相似文献