Serum amyloid A protein (SAA) in horses: objective measurement of the acute phase response   总被引：1，自引：0，他引：1  

M B Pepys  M L Baltz  G A Tennent  J Kent  J Ousey  P D Rossdale 《Equine veterinary journal》1989,21(2):106-109

A sensitive and precise immunoassay for equine serum amyloid A protein (SAA) was established and used to determine, for the first time, the circulating concentration of this protein in health and disease. As in other species, equine SAA was present only at trace levels in healthy animals but behaved as an extremely sensitive and rapidly responding acute phase reactant following most forms of tissue injury, infection and inflammation, objectively reflecting the extent and activity of disease. Measurements of SAA should make a significant contribution to diagnosis and management of viral and bacterial infection in horses, and routine serial assays could provide an objective criterion for monitoring prospectively the general health of horses in training and racing.  相似文献   

Incidence of microscopically detectable degenerative characteristics in skeletal muscle of turkey     

A Sosnicki  R G Cassens  D R McIntyre  R J Vimini  M L Greaser 《British poultry science》1989,30(1):69-80

1. The incidence of microscopically detectable degenerative characteristics in 5 skeletal muscles (m. pectoralis thoracicus, m. supracoracoideus, m. biceps femoris, m. semitendinosus, m. femorotibialis medius) of turkeys was investigated. 2. Samples were obtained from 30 Large White turkey males 14, 16 and 18 weeks old. Hyaline degeneration, infiltration of mononuclear cells and necrotic fibres were observed. 3. Individual fibres varied greatly in size and muscle fibre nuclei were often shrunken and pyknotic. 4. Weak and/or uniform reaction for Ca++-ATPase and SDH in all types of muscle fibres and loss of alkaline phosphatase activity in cell membranes were noted. A positive reaction for acid phosphatase occurred in regions of perivascular infiltration and in necrotic muscle fibres. The majority of muscle fibres possessed high activity for phosphorylase a and b. 5. Based on the use of fluorescein alpha-bungarotoxin conjugate, motor end-plates appeared to be morphologically intact. Direct immunofluorescence with anti-chicken IgG showed positive reaction in muscle fibres undergoing necrosis and in the involved connective tissue. 6. Degenerative changes varied with age and were most marked in the oldest birds. 7. Because gross degenerative symptoms were absent from both the birds and the meat from them, the condition appears to be either different from or a precursor to the degenerative myopathy characterised by other authors.  相似文献   

Filtration of Green Algae and Cyanobacteria by Freshwater Mussels in the Partitioned Aquaculture System     

Kevin R.  Stuart Arnold G.  Eversole David E.  Brune 《Journal of the World Aquaculture Society》2001,32(1):105-111

Abstract.— The freshwater mussel Elliptio complanata was provided water containing green algae and cyanobacteria delivered from the Partitioned Aquaculture System (PAS) at eight flow rates to determine algal filtration rates as mg of particulate organic carbon (POC)/kg wet tissue weight per h. The dominant taxon in cyanobacterial waters was Microcystis while the dominant taxa in green algal waters were Scenedesmus and Ankistrodesmus . The cell counts of Scenedesmus and Ankistrodesmus were the only algal taxa that were significantly different between the incoming water and water filtered by mussels. Filtration rates of POC obtained from green algal water were significantly greater than from cyanobacteria-dominated waters at all flow rates. A significant increase in mean filtration rate was observed as flow rates increased. The filtration rate of green algae increased as POC concentration increased, peaking at 28 mg C/L. A maximum filtration rate was not observed with cyanobacterial waters.  相似文献   

瓜叶菊开花生物学及杂交育种技术探讨     

张远兵  李军  刘爱荣  叶梅荣 《种子》2001,(2):30-31,34

根据有关文献及试验观测，探讨了瓜叶菊的开花生物学特性及杂交育种工作中的几个技术性问题，为瓜叶菊杂交育种工作提供了有益参考。  相似文献   

Neurotrophins and the Thymus: Morphological Analysis of Mice Carrying a Non-functional Mutation on the Trka and Trkb Genes     

German&#;  A.  Laur&#;  R.  Levanti  M.B.  Montalbano  G.  German&#;  G.P.  Abbate  F.  Ciriaco  E. 《Veterinary research communications》2004,28(1):189-192

Veterinary Research Communications -  相似文献   

S195—1型低背压排气消声器的设计研究     

李梅林 《湖南农业大学学报(自然科学版)》1990,17(3)

本文以内燃机排气噪声必需的消声量频率特性作为设计消声器的依据,论述了扩张室式和穿孔板复合消声器的设计.试验表明,采用这种新型复合消声器后,S195柴油机排气噪声得到了有效控制.  相似文献   

玉米种衣剂使用时应注意的问题     

李晓红 《种子世界》2001,(5):37-37

目前,使用种衣剂拌种已成为我市玉米生产中防治苗期病虫害的常规措施,种衣剂的应用为实现玉米全苗发挥了重要作用,但也存在一些问题:一是农民对种衣剂认识有误区,认为它是灵丹妙药,包治苗期所有病虫.  相似文献   

Hyperadrenocorticism associated with excessive sex hormone production by an adrenocortical tumor in two dogs.     

H M Syme  J C Scott-Moncrieff  N G Treadwell  M F Thompson  P W Snyder  M R White  J W Oliver 《Journal of the American Veterinary Medical Association》2001,219(12):1725-8, 1707-8

An 11-year-old spayed female Labrador Retriever and a 9-year-old castrated male miniature Poodle were evaluated because of clinical signs of hyperadrenocorticism. Cortisol testing did not support a diagnosis of hypercortisolemia in either dog; however, imaging studies revealed unilateral adrenal tumors in both dogs. Serum concentrations of 17-hydroxyprogesterone, progesterone, and estradiol were high in both dogs, and androstenedione concentrations were also high in 1 dog. It is suspected that sex hormone secretion by the adrenal tumors in these dogs resulted in clinical signs of hyperadrenocorticism. Clinical signs and hormonal abnormalities resolved in the male dog after surgical resection of the tumor. There was no improvement in clinical signs after treatment with mitotane in the female dog, which died 2 months after diagnosis. Histologic evaluation confirmed the presence of adrenocortical carcinoma in both dogs.  相似文献   

Hypercalcaemia associated with chronic lymphocytic leukaemia in a Giant Schnauzer.     

M Kleiter  R Hirt  G Kirtz  M J Day 《Australian veterinary journal》2001,79(5):335-338

A 7-year-old male Giant Schnauzer was referred with a history of severe vomiting, lethargy, weight loss, polydipsia and polyuria. Detailed investigations revealed leucocytosis with a marked lymphocytosis, mild non-regenerative anaemia, thrombocytopenia, hypercalcaemia and azotaemia. Circulating lymphocytes were small and well-differentiated, and the same lymphoid population was present in bone marrow. Chronic lymphocyctic leukaemia with associated paraneoplastic hypercalcaemia was diagnosed. Immunohistochemical staining of a bone marrow biopsy revealed a neoplastic B-cell line expressing CD79. The dog responded to therapy with prednisolone and chlorambucil for a period of 8 months.  相似文献   

降低肉鸭皮脂的可行性探讨     

蒋立  王继文 《四川畜牧兽医》2001,28(12):25-26

肉鸭皮脂作为一个数量性状进行选择是有效的、可行的，本文从营养、饲养管理、遗传各因素与皮脂的关系探讨降低皮脂的可行性。  相似文献