Effects of rapamycin-treated HSP60-pulsed dendritic cells on th e progression of the atherosclerotic plaque in mice     

LI Da-zhu  ZHOU You  WU Wei  ZENG Qiu-tang  LI Yu-shu  WANG Xiang  FE NG Yi-bai  CAO Lin-sheng 《园艺学报》2006,22(6):1079-1082

AIM:To evaluate whether tolerogenic dendri tic cells (DC) loaded with heat shock protein 60 (HSP60) inhibit the progression of aortic atherosclerotic plaque in hypercholesterolemic apolipoprotein E (Apo- E) -null mice.METHODS:Bone marrow derived DC of the mice were loaded with HSP 60 and co-cultured with rapamycin to generate tolerogenic DC.The tolerogenic DC ,DC loaded only HSP60 and PBS were injected into the ApoE-null mice at 8 weeks of age for three times at a one-week interval.8 weeks after the last injection,aorta were harvested for HE staining and anti-CD4+T cell immunostaining.Resp onses of pleenic cells to HSP60 were also evaluated.RESULTS:Compared with DC,DCHSP60 expressed higher levels of CD86,and stimulated T lymphocytes to proliferation significantly,while the tolerogenic DC expressed lower levels of CD86,and inhibited T lymphocytes to p roliferation.After immunization with different injection,the numbers of CD4+ T cells in plaque were increased significantly in DCHSP60 group vs in PBS g roup (P<0.01).On the other hand,they were reduced significantly in rap-DC HSP60 group vs in PBS group (P<0.01).Plaque areas in the tolerog enic DC group were smaller than that in the PBS group (P<0.01).Stimulated by HSP60,pleenic cells in tolerogenic DC group secreted more IL-10,while in DC HSP60 group more IFN-γ secretion was observed.CONCLUSION:HSP60 specific tolerogenic DC immunization attenuate d the progression of plaque,indicating a new immune therapy for atherosclerosis.  相似文献   

Rainfall and crop residue effects on soil dispersion and Beauveria bassiana spread to corn     

Denny J. Bruck  Leslie C. Lewis 《Applied soil ecology》2002,20(3):183-190

The entomopathogenic fungus Beauveria bassiana infects a wide range of insects and survives as a soil saprophyte and a plant endophyte. The objective of our study was to determine the role of rainfall in dispersing B. bassiana (Balsamo) Vuillemin to the surface of corn (Zea mays) from soil with different levels of crop residue. Laboratory studies which simulated field tillage systems, had levels of crop residue which covered 0.53 (control), 34, 59 and 84% of the soil surface. Simulated rainfall in a raindrop tower at an intensity of 73 mm/h caused a significant increase in the mean number of B. bassiana colony forming units (CFU) isolated from the surface of corn plants. Plants receiving rain had a mean (±S.E.M.) of 8.8±2.8 CFU per plant; controls had a mean of 0.03±0.01 CFU per plant. The mg of soil collected from the surface of plants also was significantly influenced by rainfall. Plants receiving rain had a mean of 15.7±1.7 mg of soil per plant while controls had a mean of 3.4±0.4 mg of soil per plant. Linear regression revealed highly significant negative relationships between the mean mg of soil and the mean number of CFU per plant, over the four levels of crop residue. The amount of soil and number of CFU per plant decreased significantly with increasing levels of crop residue. In field studies with conservation- and no-till systems, results were similar to those recorded in the raindrop tower. The mean number of CFU and mg of soil per plant were both higher in conservation-till plots than in no-till plots, where surface residue averaged 45 and 95%, respectively. Rainfall plays an active role in the dispersal of B. bassiana from the soil environment to the surface of whorl-stage corn. Increased levels of crop residue reduce the amount of soil and fungal transfer to the surface of young corn.  相似文献   

Radiological features of inflammatory conditions of the canine pancreas     

Christine Gibbs  H. R. Denny  H. M. Minter  H. Pearson 《The Journal of small animal practice》1972,13(9):531-544

The radiological signs of pancreatitis in six cases are described, and where possible, correlated with surgical and pathological findings. The use of radiography as an aid to diagnosis of pancreatic disease is discussed.
Résumé . Les signes radiologiques de malfonction du pancréas dans six cas sont déscrits, et où possible sont mis en correlation avec découvertes chirurgicales et pathologiques. L'usage da la radiographic comme une aide à la diagnose de la maladie pancréatique est discuté.
Zusammenfassung . Die radiologischen Zeichen der Bauchspeicheldrüsenentzündung werden in sechs Fällen beschrieben, und wo möglich werden mit chirurgischen und pathologischen Untersuchungsergebnissen korreliert. Der Gebrauch der Röntgenphotographie wie ein Beistand fur die Diagnose der pankreatischen Krankheit wird besprochen.  相似文献   

Anaesthetic and surgical technique for bilateral adrenalectomy in stress sensitive pigs     

H R Denny  J N Lucke 《Research in veterinary science》1977,23(3):372-377

A technique for anaesthesia of Pietrain pigs using thiopentone or ketamine, ventilation with nitrous oxide and oxygen and muscle relaxation with pancuronium, is described. Bilateral adrenalectomy was carried out by a mid line laparotomy and details of the surgical technique are illustrated. Four of the 10 animals died 7--13 hours after surgery with a hyperthermic response.  相似文献   

Practical conservation,water and wetlands,P. Furniss and A. Lane,The Open University,Hodder & Stoughton, 1992, 128 pp. Price: £7.99     

Patrick Denny 《水产资源保护:海洋与淡水生态系统》1993,3(1):70-70

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A comparison of continuous and rotational grazing on veld at two stocking rates     

D.L. Barnes  R.P. Denny 《African Journal of Range and Forage Science》2013,30(4):168-173

Two rotational grazing procedures, a four‐paddock system with a 10‐day period of stay and an eight‐paddock system with a 5‐day period of stay, were compared with continuous grazing on veld. The trial was conducted 40 km south of Bulawayo in Zimbabwe, over the six‐year period 1975–81. Using yearling steers, the treatments were applied at two year‐long stocking rates, 1.8 and 2.5 ha steer^?1, and were replicated twice. Fresh groups of steers were used in the trial each year. Steer performance was virtually identical in all treatments, except continuous grazing at the lower stocking rate, in which, during the growing season, mass gains were on average 13% higher than those in the other treatments. Although floristic composition changed over the period of the trial, no differential effects of either grazing procedure or stocking rate were detected on the composition.  相似文献   

Brucellosis in the horse     

H R Denny 《The Veterinary record》1972,90(4):86-90

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Remote intramuscular injection of immobilising drugs into fish using a laser-aimed underwater dart gun     

B Harvey  C Denny  S Kaiser  J Young 《The Veterinary record》1988,122(8):174-177

Sixty coldwater and warmwater fish ranging in weight from 2 to 35 kg were injected intramuscularly with the hypnotics alphaxalone-alphadolone and metomidate hydrochloride and the non-depolarising muscle relaxant gallamine triethiodide using a laser-aimed underwater dart gun. Alphaxalone-alphadolone produced sufficient sedation for easy netting within five to 20 minutes at doses between 0.3 and 0.5 ml/kg, with induction being somewhat faster in warmwater species. The pattern of induction was similar with metomidate but required doses of 40 to 60 mg/kg. The muscle relaxant gallamine triethiodide showed promise as a practical agent for the capture and handling of large fish by virtue of its smooth induction of paralysis at doses between 1 and 3 mg/kg and its reversible supplementation with orally administered metomidate hydrochloride.  相似文献   

Retrospective Evaluation of Hemithyroidectomy in 14 Horses          下载免费PDF全文

Antonia Troillet  Denny Böttcher  Walter Brehm  Doreen Scharner 《Veterinary surgery : VS》2016,45(7):949-954

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Effect of improved nutrition during calfhood on serum metabolic hormones, gonadotropins, and testosterone concentrations, and on testicular development in bulls     

Brito LF  Barth AD  Rawlings NC  Wilde RE  Crews DH  Mir PS  Kastelic JP 《Domestic animal endocrinology》2007,33(4):460-469

The objective of the present study was to evaluate the effects of improved nutrition during calfhood on serum metabolic hormones, gonadotropins and testosterone concentrations, and on sexual development in bulls. Bulls received high (n = 17) or control nutrition (n = 16) diets from 10 to 30 week of age and the same control nutrition diet from 31 to 74 week of age. Improved nutrition during calfhood resulted in a more sustained period of elevated LH secretion (pulse frequency and total secretion in 10 h) during the early gonadotropin rise. GnRH-stimulated LH secretion was not affected by diet, indicating that pituitary responsiveness was not altered; therefore, improved nutrition had direct effects on GnRH secretion by the hypothalamus. Insulin and insulin-like growth factor-I (IGF-I) concentrations were greater during calfhood in bulls receiving high nutrition, indicating that these metabolic hormones might be involved in regulating GnRH and LH secretion. Improved nutrition also resulted in increased testosterone secretion that was associated with greater circulating IGF-I concentrations, suggesting a role for this metabolic hormone in regulating Leydig cell number and function. Furthermore, improved nutrition during calfhood resulted in greater testicular weight and sperm production in mature bulls, indicating that increased LH secretion during calfhood, and increased IGF-I and testosterone concentrations during calfhood and peripubertal period were associated with greater testicular cell proliferation and enhanced function.  相似文献