Development of a multiple-marker polymerase chain reaction assay for detection of metastatic melanoma in lymph node aspirates of dogs     

Catchpole B  Gould SM  Kellett-Gregory LM  Dobson JM 《American journal of veterinary research》2003,64(5):544-549

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Treatment of canine lymphoma by veterinarians in first opinion practice in England     

Mellanby RJ  Herrtage ME  Dobson JM 《The Journal of small animal practice》2002,43(5):198-202

A survey of canine lymphoma treatment strategies by veterinarians in first opinion practice was undertaken by sending questionnaires to 1000 randomly selected, first opinion small animal veterinary practices throughout England. Completed replies were received from 382 veterinarians. Ninety-five per cent of respondents had diagnosed canine lymphoma in the preceding 12 months. Eighty-seven per cent of respondents treated at least 50 per cent of the cases of canine lymphoma they diagnosed. A multidrug combination of vincristine, cyclophosphamide and prednisolone (COP) was the treatment protocol most commonly used. A doxorubicin-based treatment protocol was used by 2 per cent of respondents to treat canine lymphoma initially. The study suggests that, despite several reports of improved survival times with doxorubicin-based protocols, most veterinarians in first opinion practice in England treat canine lymphoma with COP.  相似文献   

Canine neoplasia in the UK: estimates of incidence rates from a population of insured dogs   总被引：1，自引：0，他引：1  

Dobson JM  Samuel S  Milstein H  Rogers K  Wood JL 《The Journal of small animal practice》2002,43(6):240-246

Neoplasia is common in pet dogs but accurate figures for the incidence of tumours in this, as in other species, are sparse. The purpose of this study was to document the occurrence of tumours in a defined population of dogs. From a database of 130,684 insured dogs, claims relating to the investigation or treatment of tumours or tumour-like lesions during a 12-month period were accessed and followed up. A total of 2,546 claims were tumour related and were classified according to tumour site and type. Because the demographics of the insured population were skewed towards younger animals, a standard population, as described in the veterinary literature, was used in the calculation of tumour incidence rates. The skin and soft tissues were the most common sites for tumour development, with a standardised incidence rate of 1,437 per 100,000 dogs per year, followed by alimentary (210), mammary (205), urogenital (139), lymphoid (134), endocrine (113) and oropharyngeal (112). Canine cutaneous histiocytoma was the most common single tumour type, with a standardised incidence rate of 337 per 100,000 dogs per year, followed by lipoma (318), adenoma (175), soft tissue sarcoma (142), mast cell tumour (129) and lymphosarcoma (114). These data are unique and provide a valuable basis for future research into the aetiology and epidemiology of canine tumours.  相似文献   

Rhabdomyosarcoma of the tongue in a dog   总被引：1，自引：0，他引：1  

B. D. X. Lascelles    E. McInnes  J. M. Dobson  R. A. S. White 《The Journal of small animal practice》1998,39(12):587-591

A lingual rhabdomyosarcoma was diagnosed in a six-year-old Staffordshire bull terrier with clinical signs of dysphagia. The unsuccessful response to initial chemotherapy, to surgical resection and subsequent surgical resection and radiation therapy is documented. The accurate diagnosis and prognosis of such tumours is also discussed. Lingual rhabdomarcoma has not previously been reported in the dog.  相似文献   

Noradrenergic Control of Arginine Vasopressin Release from the Ewe Hypothalamus In Vitro: Sensitivity to Oestradiol     

SPS Ghuman  S Prabhakar  RF Smith  H Dobson 《Reproduction in domestic animals》2008,43(2):137-143

The present study aims at ascertaining the influence of α₁‐adrenoreceptors on arginine vasopressin (AVP) release in vitro and determine whether E₂ modulates the α₁‐adrenoreceptor and AVP interaction. Ten minutes after ewe killing, sagittal midline hypothalamic slices (from the anterior preoptic area to the mediobasal hypothalamus with the median eminence, 2 mm thick, 2 per sheep) were dissected, placed in oxygenated minimum essential media‐α (MEM‐α) at 4°C and within 2 h were singly perifused at 37°C with oxygenated MEM‐α (pH 7.4; flow rate 0.15 ml/min), either with or without E₂ (24 pg/ml). After 4 h equilibration, 10 min fractions were collected for 4 h interposed with 10 min exposure at 60 min to a specific α₁‐adrenoreceptor agonist or antagonist at various doses (0.1–10 mm ). At the end of all perifusions, slices responded to KCl (100 mm ) with AVP efflux (p < 0.05). Release of AVP was enhanced (p < 0.05) by the α₁‐adrenoreceptor agonist (methoxamine 10 mm ; no E₂, n = 7 perifusion chambers: from 14.3 ± 2.7 to 20.9 ± 3.9, with E₂, n = 10: from 10.7 ± 1.2 to 18.4 ± 3.4 pg/ml) or the antagonist (thymoxamine 10 mm ; no E₂, n = 5: from 9.5 ± 3.1 to 30.4 ± 6.0, with E₂, n = 10: from 10.8 ± 0.9 to 39.1 ± 6.3 pg/ml). With the agonist, the response occurred only at 80 min (p < 0.05) both in the presence and absence of E₂. Whereas, after the antagonist, values were higher (p < 0.05) throughout the post‐treatment period (80–170 min) without E₂, but declined by 150 min in the presence of E₂. Furthermore, the response to the α₁‐adrenoreceptor antagonist was greater (p < 0.05; 90–140 min) than the agonist only in the presence of E₂. In conclusion, these results reveal direct α₁‐adrenoreceptor‐mediated control of the hypothalamic AVP neuronal system which is modulated by E₂.  相似文献   

Enhancement of cation diffusion rates across the 410-kilometer discontinuity in Earth's mantle     

S Chakraborty  R Knoche  H Schulze  DC Rubie  D Dobson  NL Ross  RJ Angel 《Science (New York, N.Y.)》1999,283(5400):362-365

Rates of cation diffusion (magnesium, iron, and nickel) have been determined in olivine and its high-pressure polymorph, wadsleyite, at 9 to 15 gigapascals and 1100 degrees to 1400 degreesC for compositions that are relevant to Earth's mantle. Diffusion in olivine becomes strongly dependent on composition at high pressure. In wadsleyite, diffusion is one to two orders of magnitude faster than in olivine, depending on temperature. Homogenization of mantle heterogeneities (chemical mixing) and mineral transformations involving a magnesium-iron exchange will therefore occur considerably faster in the transition zone than at depths of less than 410 kilometers.  相似文献   

CHANGES IN EQUINE LUNG PERFUSION WITH ANAESTHESIA     

R.D. Gleed  R.E. Meyer  A. Dobson 《Veterinary anaesthesia and analgesia》1984,12(1):154-164

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Preliminary results on the effects of diazepam on physiological responses to transport in male goats     

A A Sanhouri  R S Jones  H Dobson 《The British veterinary journal》1991,147(4):388-389

Diazepam given i.v. to goats at 0.2 mg/kg body wt suppressed transport-induced hypercortisolaemia, hyperglycaemia, tachypnoea and tachycardia. A rebound increase in cortisol concentrations, respiratory and heart rates was seen during the recovery period after sedation.  相似文献   

Changes in Plasma Concentrations of LH, FSH, Estradiol 17-β and Progesterone During Oestrus in Mithun (Bos frontalis)     

A Dhali  DP Mishra  A Mech  M Karunakaran  H Choudhury  K Khate  C Rajkhowa 《Reproduction in domestic animals》2006,41(2):162-168

The objective of the present study was to establish the changes in plasma concentrations of LH, FSH, estradiol 17-beta (E2) and progesterone (P4), as well as to understand their temporal relationships during oestrus in mithun (Bos frontalis). The experiment was conducted on 11 mithuns during third or fourth postpartum oestrous cycle. Since oestrus onset the jugular vein blood samples were collected every 2 h for 72 and 96 h, respectively from the animals without and with standing heat. The LH, FSH, E2 and P4 concentrations were estimated in plasma. The P4 concentration was fluctuated throughout the oestrus period and the average P4 concentration was found significantly (p<0.05) lower on the day of oestrus onset. The multiple rises in LH and FSH concentrations above the basal level in spike like fashion were observed throughout the oestrus period irrespective of the occurrence of standing heat. A significant (p<0.01) gradual increase in the average daily E2 concentration was observed till day 2 following oestrus onset irrespective of the occurrence of standing heat. A significant (p<0.05) simultaneous increase in LH, FSH and E2 concentrations and a transient increase in P4 concentration at approximately the time of standing heat onset were observed. During investigation a definite temporal coupling between LH and FSH rises was absent throughout the oestrus period. The results suggest that (1) the multiple short-duration low-amplitude LH and FSH surges during oestrus may be crucial for the final maturation of ovulatory follicle and subsequent ovulation in mithun; (2) a differential mechanism for controlling LH and FSH secretions probably exists in mithun.  相似文献   

FAILURE OF CHOLINE AND METHIONINE TO PREVENT SPLAYLEG IN PIGLETS     

K. J. Dobson  B.V.Sc.  M.R.C.V.S. 《Australian veterinary journal》1971,47(12):587-590

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