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1.
试验通过对芩术安胎散的急性毒性、亚慢性毒性和临床安全性进行研究,为芩术安胎散对家猫先兆性流产的预防与治疗提供参考。急性毒性试验：制备芩术安胎散药液,取6周龄健康昆明小白鼠60只,随机分为5组,每组12只,第1~4组的给药剂量分别为6 000、4 800、3 840和3 072 mg/kg,对照组给予等量纯净水,10 d内观察有无中毒和死亡,计算半数致死量（LD50）;另取6周龄健康昆明小白鼠20只,随机分为2组：试验组给予2.0 g/mL芩术安胎散药液,18 h内灌服3次,每次0.8 mL,对照组给予等量纯净水,给药后饲养7 d,计算最大耐受量（MTD）。亚慢性毒性试验：24只7周龄SD雌性大鼠随机均分为高、中、低剂量组和对照组,在30 d内,每日分别给予4 800、2 400和1 200 mg/kg芩术安胎散,对照组以等量纯净水进行灌胃,每日观察和记录各组大鼠的精神状态、有无中毒症状和死亡;第31天对各组大鼠称重、采血,进行血液学检测,剖检各组大鼠,观察主要脏器有无病变并制作病理切片。临床安全性试验：选取2~5岁健康雌性家猫20只,适应性饲养10 d,随机分组,每组5只,分别为低剂量组（1倍临床推荐剂量：1.15 g/kg）、中剂量组（3倍临床推荐剂量：3.45 g/kg）、高剂量组（5倍临床推荐剂量：5.75 g/kg）及空白对照组,将药物置于胶囊内,口服给药,空白对照组给予空胶囊,每日1次,连续给药7 d,每日观察各组家猫食欲、精神状态及排便情况,于第8天对各组家猫进行静脉采血,检测血常规和血液生化指标。结果显示,急性毒性试验无小鼠死亡,LD50>6 000 mg/kg;小鼠对芩术安胎散的最大耐受量为240 g/kg,表明该受试药物无明显毒性。在亚慢性毒性试验中,各组大鼠的生长发育情况、血常规指标、脏器系数与对照组相比均无显著差异（P>0.05）;高、中剂量组与低剂量组、对照组相比血清总胆固醇含量显著下调（P<0.05）,除此之外的生化指标均无显著差异（P>0.05）。病理剖检和组织切片观察结果显示,高剂量组大鼠主要组织器官与对照组相比无明显异常。在临床安全性试验中,不同剂量组家猫精神状态、被毛光泽度、粪便情况均正常,血液学指标与对照组相比差异均不显著（P>0.05）。本试验结果表明,中药芩术安胎散无明显毒性,家猫按临床推荐剂量使用是安全的。 相似文献
2.
《饲料工业》2015,(14)
试验研究不同蛋氨酸铬水平对肉猪生长性能、饲料表观消化率、血清生化指标的影响。试验采用单因子试验设计,选用40 kg左右杜长大三元杂生长猪96头,随机分为4个组,其中1个对照组,3个试验组,试验组分别添加200、300、400μg/kg(以含铬量计算)的蛋氨酸铬;试验结果表明:1在生长性能方面:以200μg/kg蛋氨酸铬日增重最高,比对照组提高了12.37%(P0.05);料重比最低,比对照组低4.13%(P0.05)。2在饲料消化率方面:蛋氨酸铬水平对生长猪饲料表观消化率无显著影响,200μg/kg蛋氨酸铬组能量、粗蛋白、粗脂肪的消化率均高于对照组,但均未达到显著水平(P0.05)。3在血清生化指标方面:200、300、400μg/kg蛋氧酸铬组总蛋白、球蛋白相对于对照组均有提高,其中200μg/kg组在总蛋白方面显著高于对照组(P0.05),300μg/kg组在球蛋白方面显著高于对照组(P0.05);血糖值与对照组相比均有所下降,其中300μg/kg组与对照组相比差异显著(P0.05);200μg/kg组的胆固醇显著低于对照组(P0.05);低密度脂蛋白各组数据均显著下降(P0.05)。在血清免疫指标方面,200μg/kg蛋氨酸铬组Ig G与对照组相比有所提高(P0.05),试验组皮质醇出现下降趋势,但结果不显著(P0.05)。由试验结果可知,蛋氨酸铬在日粮中添加剂量为200μg/kg时对提高生长猪的生长性能是最有利的。 相似文献
3.
《中国兽医杂志》2016,(5)
为了评价甜菊糖苷中的主要成分之一莱鲍迪苷A的致突变作用,在2 500~4μg/皿范围内,对莱鲍迪苷A(含量≥97%)进行了Ames试验,灭菌水作为阴性对照;以5.0 g/kg体重、2.5 g/kg体重和1.25 g/kg体重剂量进行了小鼠骨髓细胞微核试验和小鼠精子畸形试验,以40 mg/kg环磷酰胺为阳性对照,生理盐水为阴性对照。结果 Ames试验中,莱鲍迪苷A对TA97、TA98、TA100和TA102菌株的回变菌落数均小于阴性对照组的两倍,且未见剂量-反应关系,Ames试验阴性;小鼠骨髓细胞微核试验和小鼠精子畸形试验均为阴性。表明莱鲍迪苷A在试验剂量下无致突变作用。 相似文献
4.
《畜牧与兽医》2014,(10):5-10
观察研制的中药复方制剂治疗急性感染弓形虫小鼠的效果。在测定感染弓形虫小鼠最小致死量的基础上,比较不同剂量的中药复方制剂(35、25和15 g/kg)和磺胺间甲氧嘧啶钠(300、200和100 mg/kg)的疗效。为进一步验证治疗剂量的效果,每只鼠经腹腔感染25个弓形虫速殖子后4 h,鼠逐只经胃灌服25 g/kg中药复方制剂或200 mg/kg磺胺间甲氧嘧啶钠,每日2次,连用5 d,同时设感染不用药组与空白对照组,以小鼠存活率与平均存活时间、腹腔液中虫体数、组织病变程度以及SOD活性等指标评价药物效果。不同剂量治疗效果的比较显示,中药高剂量组、中剂量组与磺胺间甲氧嘧啶钠中剂量组的小鼠存活率、平均存活时间及腹腔液中虫体数相近,三者间差异不显著(P>0.05)。验证试验显示,中药复方制剂组(25 g/kg)与磺胺间甲氧嘧啶钠组(200 mg/kg)的小鼠存活率、平均存活时间、腹腔液中虫体数和血清SOD活性相近,两者间无显著差异(P>0.05),两者均能减轻肝、肺、脾的组织病变。中药复方制剂具有一定的抗弓形虫效果,25 g/kg的剂量效果最佳。 相似文献
5.
以昆明小鼠为实验动物,检测柞蚕雄蛾粉的急性毒性和致突变性,为柞蚕雄蛾药品和食品的毒理学与安全性评价提供试验依据。将柞蚕雄蛾粉按照18 g/kg的总剂量在24 h内分3次饲喂小鼠,然后连续14 d均未观察到小鼠有中毒症状和死亡情况,检测柞蚕雄蛾粉对小鼠经口急性毒性的LD5015 g/kg,属无毒级物质。雌性和雄性小鼠分别按2.5 g/(kg·d)、5.0g/(kg·d)、10.0 g/(kg·d)3种剂量饲喂柞蚕雄蛾粉,小鼠的骨髓细胞微核率与阴性对照组比较均无显著性差异(P0.05),与环磷酰胺处理的阳性对照组比较差异显著(P0.05);3个剂量组小鼠的嗜多染红细胞占红细胞的百分率(PCE/RBC)与阴性对照组比较均无显著性差异(P0.05),但与阳性对照组比较均有显著性差异(P0.05)。致突变性(Ames)检测试验中,以16、78、313、1 250、5 000μg/皿5种剂量的柞蚕雄蛾粉处理后,各处理组的回变菌落数与空白对照组、溶剂对照组及组氨酸对照组比较均无显著性差异(P0.05),与阳性对照组比较均有显著性差异(P0.05),且5个剂量处理组间无剂量效应关系(无显著性差异)。2.5 g/(kg·d)、5.0 g/(kg·d)、10.0 g/(kg·d)3种剂量柞蚕雄蛾粉添食试验组雄性小鼠的精子畸形率与阴性对照组比较均无显著性差异(P0.05),与环磷酰胺处理的阳性对照组比较均有显著性差异(P0.05)。以上试验结果初步说明柞蚕雄蛾粉对昆明小鼠无急性毒性、无致突变性和无致畸性。 相似文献
6.
目的:探讨藿贞散对小鼠特异性免疫的增强作用,并筛选藿贞散的最佳临床使用剂量。方法:将18-20日龄体质量15-20 g昆明小鼠200只随机分成5个大组,每组40只,以确定牛血清白蛋白(BSA)对小鼠的最佳免疫剂量;每大组再分为4小组,每小组10只,雌雄各半,Ⅰ-Ⅲ组为试验组,分别用2 425 mg/kg、4 850 mg/kg和9 700 mg/kg的藿贞散拌料,Ⅳ组为空白对照组,饲喂常规饲料。连续饲喂7 d后,各大组分别用0.1μg/只、0.3μg/只、0.9μg/只、2.7μg/只和8.1μg/只剂量的BSA皮下注射,并继续用前述饲料饲喂7 d后,每只小鼠采血0.5 m L,分离血清,用间接ELISA法检测小鼠抗BSA抗体的效价。结果:BSA的接种剂量为0.3μg/只时,抗BSA抗体的OD值最高,为0.277±0.059;而在0.3μg/只BSA剂量组中,藿贞散试验组以低剂量组的抗体效价最高,为0.300±0.059。结论:BSA对小鼠的最佳免疫接种剂量为0.3μg/只,藿贞散能提高小鼠血清抗BSA抗体的效价,其最佳剂量为2 425 mg/kg。 相似文献
7.
橘皮提取物的毒性研究 总被引：4，自引：1，他引：3
本文报告了橘皮提取物(总成分)的小鼠急性毒性、眼刺激性和致突变试验研究。结果橘皮提取物的口服LD_(50)为9.05±0.56g/kg体重,腹腔注射LD_(50)为2.72±0.20g/kg体重;对兔眼无刺激作用;以4、40、400和4000μg/皿进行Ames试验,橘皮提取物在加与不加S_9活化系统中对TA_(97)、TA_(98)、TA_(100)和TA_(102)的回变菌落数与其自发回变菌落数相近。以1.3、2.6和5.2g/kg体重灌胃2次进行小鼠骨髓细胞微核试验,各试验组微核率均在自然出现平范围内。以1.25、2.5和5g/kg体重连续灌胃5天,于第35天取副睾进行小鼠精子的畸形试验,各试验组精子畸形率与阴性对照组无显著差异。表明橘皮提取物无致突变性。 相似文献
8.
选用停产后重新开产前的金定鸭90只,研究日粮中添加不同水平吡啶羧酸铬对重产蛋鸭粗蛋白质、能量、钙、磷、钾、钠、镁、锌、铁的利用率的影响.日粮中添加铬水平分别为0、100、200、400、800μg/kg.结果表明,日粮中添加吡啶羧酸铬对蛋鸭的能量、粗蛋白质、钙、磷、钾、镁、铁的利用率无显著影响.补铬200μg/kg有提高能量、粗蛋白质、钙、磷、镁、铁利用率的趋势.补铬800μg/kg与补铬200μg/kg相比,显著降低了锌的吸收,但钠的利用率显著高于补铬200μg/kg组.建议笼养重产蛋鸭日粮铬适宜添加水平为200μg/kg. 相似文献
9.
选用96头体重(24.67±0.36)kg,公母各半达兰猪,随机分为4组,每组4个重复,每个重复6头。对照组饲喂基础日粮,3个试验组分别添加200、400μg/kg和800μg/kg吡啶甲酸铬(以铬计)。另外,选用8头体重(24.98±0.56)kg达兰猪,随机分为2组,添加1600μg/kg和3200μg/kg吡啶甲酸铬(以铬计),试验期28d。结果表明,添加200～800μg/kg吡啶甲酸铬对猪平均日增重和饲料转化效率无显著影响(P>0.05),但可提高饲料采食量,800μg/kg处理组的采食量显著高于其他3个处理组(P=0.01)。添加200～3200μg/kg吡啶甲酸铬猪组织中铬残留量为0.08～0.35mg/kg。 相似文献
10.
《中国家禽》2017,(13)
为研究酵母铬对鹌鹑生产性能和蛋品质的影响,取300只1日龄黄羽蛋用鹌鹑,随机分为6组,每组50只。在鹌鹑日粮中添加不同剂量酵母铬(以铬含量计:0μg/kg、100μg/kg、200μg/kg、400μg/kg、600μg/kg、800μg/kg)。开产后每天记录鹌鹑的产蛋率,并于开产15 d后,每隔7 d,从每组中收集3个蛋,测定蛋黄中胆固醇(TC)含量。分别于试验第50天和70天每组取6只鹌鹑,测定肝脏、胸肌和腿肌中TC和甘油三酯(TG)含量。结果:日粮添加酵母铬可以显著影响鹌鹑的产蛋率,并显著降低鹌鹑肝脏和胴体中的TG和TC含量,以及蛋黄中TC的含量。其中添加400μg/kg酵母铬对降低鹌鹑肝脏、胸肌和腿肌中TG和TC含量的效果最好。 相似文献
11.
AURY NUNES DE MORAES DVM DVSC DORIS H. DYSON DVM DVSC Diplomate ACVA MICHAEL R. O'GRADY DVM Diplomate ACVIM WAYNE N. McDONELL DVM PhD Diplomate ACVA DAVID L. HOLMBERG DVM MVSC Diplomate ACVS 《Veterinary surgery : VS》1998,27(5):486-497
Objective—To determine the plasma concentrations and cardiovascular changes that occur in healthy dogs and dogs with aortic stenosis that are given an infusion of lidocaine during isoflurane anesthesia. Study Design—Phase 1, controlled randomized cross-over trial; Phase 2, before and after trial Animals—Phase 1, 6 healthy dogs (4 female, 2 male) weighing 23.8 ± 7.4 kg; Phase 2, 7 dogs (4 female, 3 male) with moderate to severe subaortic stenosis (confirmed by Doppler echocardiography) weighing 31.1 ± 14.5 kg. Methods—After mask induction, intubation, and institution of positive pressure ventilation, instrumentation was performed to measure hemodynamic variables. After baseline, measurement at an end-tidal isoflurane concentration of 1.9% (phase 1) or 1.85% (phase 2), a loading dose infusion of lidocaine at 400 μg/kg/min was given. Phase 1: Maintenance doses of lidocaine were administered consecutively (40, 120, and 200 μg/kg/min) after the loading dose (given for 10, 10, and 5 minutes, respectively) in advance of each maintenance concentrations. Measurements were taken at the end of each loading dose and at 25 and 35 minutes during each maintenance level. The same animals on a different day were given dextrose 5% and acted as the control. Phase 2: Dogs were studied on a single occasion during an infusion of lidocaine at 120 μg/kg/ min given after the loading dose (10 minutes). Measurements occurred after the loading dose and at 25 and 35 minutes. A blood sample for lidocaine concentration was taken at 70 minutes. Data were compared using a one-way ANOVA for phase 1, and between phase 1 and 2. Statistical analysis for phase 2 was performed using a paired r-test with a Bonferroni correction. A P value ± .05 was considered significant. Results—Phase 1: Plasma lidocaine concentrations achieved with 40, 120, and 200 μg of lidocaine/kg/min were 2.70, 5.27, and 7.17 μg/mL, respectively. A significant increase in heart rate (HR) (all concentrations), central venous pressure (CVP), mean pulmonary areterial pressure (PAP), and a decrease in stroke index (SI) (200 μg/kg/min) were observed. An increase in systemic vascular resistance (SVR) and mean PAP, and a decrease in SI also followed the loading dose given before the 200 μg/kg/min infusion. No other significant differences from the control measurements, during dextrose 5% infusion alone, were detected. Phase 2: Plasma lidocaine concentrations achieved were 5.35, 4.23, 4.23, and 5.60 μg/mL at 10, 25, 35, and 70 minutes, respectively. They were not significantly different from concentrations found in our healthy dogs at the same infusions. A significant but small increase in CVP compared with baseline was noted after the loading dose. There were no significant differences from baseline shown in all other cardiovascular data. There were no statistically significant differences in any measurements taken during the lidocaine infusion between the dogs in phase 1 and phase 2. Dogs with aortic stenosis tended to have a lower cardiac index than healthy dogs at baseline (88 v 121 mL/kg/min) and during lidocaine infusion (81 v 111 mL/kg/min). A small, statistically significant difference in systolic PAP was present at baseline. Conclusions—There does not appear to be any detrimental cardiovascular effects related to an infusion of lidocaine at 120 μg/kg/min during isoflurane anesthesia in healthy dogs or dogs with aortic stenosis. The technique used in this study resulted in therapeutic plasma concentrations of lidocaine. Clinical Relevance—Methods shown in the study can be used in clinical cases to achieve therapeutic lidocaine levels without significant cardiovascular depression during isoflurane anesthesia. 相似文献
12.
13.
The effect of glycopyrrolate on heart rate and intestinal motility in conscious horses 总被引：1，自引：1，他引：0
Glycopyrrolate (GLY) is a synthetic quaternary ammonium anticholinergic compound which offers a number of advantages over atropine, including less arrhythmogenic influence and lack of significant effect upon the central nervous system, eyes and foetus. Five healthy horses (7.4 ± 2.2 years, 462 ± 31.7 kg) were administered 2.5, 5 and 10 μg/kg doses of GLY iv in a randomised and blinded manner with at least 48 h between treatments. The electrocardiogram and heart rate were recorded on an oscilloscopic and chart recorder while gastrointestinal (GIT) motility was assessed by auscultation of 4 abdominal quadrants, assigning a subjective score from 0 (no motility) to 4 (normal motility). Heart rate, which was observed at baseline, 2, 5, 10, 15, 30 min, and 1, 2, 3, 4, 6, 9, 12, 18 and 24 h post GLY, revealed no change with the 2.5 μg/kg dose, and an increase with 5 μg/kg (59%) and 10 μg/kg (109%) for up to 1 h. The 2.5 and 5 μg/kg doses did not prevent the development of second degree atrioventricular block in some horses for up to 15 min, while the 10 μg/kg dose eliminated any pre-existing block within 5 min. There was a complete loss of GIT motility with the 5 and 10 μg/kg doses and partial loss with the 2.5 μg/kg dose. Subsequent return of motility was apparently dose-dependent with 50% of baseline motility score returning in 2.4, 6.4 and 11.5 h with 2.5, 5 and 10 μg/kg doses, respectively. Two horses receiving a 10 μg/kg dose developed abdominal discomfort. Passage of faeces and appetite were not significantly different with any dose. Glycopyrrolate did not induce any change in the pupillary response to a light source at any stage of observation. The results of this study indicate that 5 μg/kg induces a reasonable increase in heart rate without affecting GIT motility for an excessive length of time in awake, healthy, adult, unsedated horses. 相似文献
14.
The analgesic activity of fentanyl was measured in sheep using both thermal and mechanical test systems. Fentanyl at a dose rate of 5 μg/kg given intravenously (iv) produced significant analgesia to thermal pain for some 30 mins but no detectable mechanical antinociceptive activity. However, at a dose rate of 10 μg/kg the drug produced both thermal (for 60 mins) and mechanical (40 mins) antinociceptive effects. In one sheep a dose of 20 μg/kg produced thermal analgesia for 110 mins and mechanical antinociception for 60 mins. Following iv injection at 10 μg/kg in five of the sheep, there was a brief period of respiratory depression evidenced by a significant fall in PaCO2 of the order of 25 per cent and an increase in PCO2 levels, but these changes were short lived and levels were back to normal at 15 mins after injection. 相似文献
15.
van Oostrom H Doornenbal A Schot A Stienen PJ Hellebrekers LJ 《Veterinary journal (London, England : 1997)》2011,(3):338-344
The sedative and analgesic effects of continuous rate infusion (CRI) of dexmedetomidine (DEX) were investigated in Beagle dogs (n = 8) using auditory and somatosensory evoked potentials (AEPs and SEPs) recorded before, during and after a CRI of saline or DEX (1.0, 3.0, 5.0 μg/kg bolus, followed by 1.0, 3.0, 5.0 μg/kg/h CRI, respectively).The results showed a significant reduction in AEP at doses of 1.0 μg/kg/h and above and a significant reduction of the SEP at doses of 3.0 and 5.0 μg/kg/h. Neither the AEP nor the SEP was further reduced at 5.0 μg/kg/h when compared to 3.0 μg/kg/h, although a slower return towards baseline values was observed at 5.0 μg/kg/h. The mean plasma levels (±SEM) of DEX during infusion were 0.533 ± 0.053 ng/mL for the 1.0 μg/kg/h dose, 1.869 ± 0.063 ng/mL for the 3.0 μg/kg/h dose and 4.017 ± 0.385 for the 5.0 μg/kg/dose. It was concluded that in adult dogs, a CRI of DEX had a sedative and analgesic effect that could be described quantitatively using neurophysiological parameters. Sedation was achieved at lower plasma levels than required for analgesia, and DEX had a longer (but not larger) effect with infusion rates above 3.0 μg/kg/h. 相似文献
16.
1. In experiment 1, the effects of age on oil digestibility and apparent metabolisable energy (AME) were measured in chickens and ducklings between 3 and 28 d of age on a diet with 400 g rice bran/kg. In experiment 2, a biosurfactant and a food lipase were added to diets of chickens containing 200 and 400 g rice bran/kg. In experiment 3, chicken diets containing 0 or 400 g rice bran/kg were supplemented with a food lipase (2 concentrations) or a food enzyme or their combination. 2. In experiment 1, oil metabolisability and AME increased substantially as chickens aged. Oil metabolisability was much higher in ducklings, when comparisons were made with chickens of similar age. 3. In experiment 2, lipase or biosurfactant gave no improvement in bird performance. Growth rate and food conversion ratio were, respectively, 23% and 10% better on diets with 200 compared to 400 g rice bran/kg. 4. In experiment 3, there was a significant growth response to lipase plus the enzyme mixture on the diet with 200 g rice bran/kg. On the diet with 400 g rice bran/kg, growth improvement was seen with the enzyme mixture only. 5. In experiment 3, enzyme addition did not increase oil metabolisability or AME. At 4 to 8 d of age AME was higher on the diet without rice bran but oil metabolisability was the same as on the diet with rice bran. At 19 to 23 d of age AME was similar but oil metabolisability was higher on the diet with rice bran than without. Droppings' dry matter was higher on diets without than with rice bran (32.4 vs 27.1%). 6. The response to lipase and the combination of this and a food enzyme suggest that there may be benefit in examining this interaction further although they had no effect on oil metabolisability or on AME. It is concluded that a stable AME for rice bran cannot be provided for chickens until at least 21 d of age. 相似文献
17.
试验选用56周龄新扬州鸡产蛋鸡150只,随机分为3个处理,每个处理5个重复,各重复10只.研究经腿肌注射0、200和400μg鸡甲状旁腺素基因质粒(pCEP4-PTH)对蛋鸡生产性能、蛋壳质量和血液部分激素的影响.试验结果表明,pCEP4-PTH基因质粒可改善蛋鸡生产性能;200μg注射量可显著改善蛋壳强度(P<0.05),400μg注射量对蛋壳质量影响不显著;pCEP4-PTH基因质粒可在蛋鸡体内良好表达,甲状旁腺素(PTH)水平均显著升高(P<0.05),且注射400 μg时达到极显著水平(P<0.01),注射400 μg pCEP4-PTH基因质粒具有促进内源降钙素(CT)和雌激素(E2)分泌的作用(P<0.05),因而不利于其生物学效应的发挥,两试验组骨钙素(BGP)与对照组差异不显著,提示生产性能和蛋壳质量的改善未对骨骼造成不良影响.pCEP4-PTH基因质粒可改善蛋鸡生产性能和蛋壳质量,且不影响骨骼质量. 相似文献
18.
试验将36只18~22 g雄性昆明小鼠随机分为空白对照组、太子参多糖对照组(400 mg/kg体重)、环磷酰胺(CY)模型组、太子参多糖低、中、高剂量组(100、200、400 mg/kg体重),上述各组分别灌喂蒸馏水和多糖,连续灌胃19 d,第20天,除空白对照组和太子参多糖对照组小鼠腹腔注射生理盐水外,其余4组均腹腔注射CY(100 mg/kg体重),24 h处死小鼠,取十二指肠和回肠,放免法测定分泌型免疫球蛋白A(SIgA)、白细胞介素-2(IL-2)、白细胞介素-6(IL-6)的含量,研究太子参多糖对CY所致肠道黏膜损伤小鼠中SIgA、IL-2、IL-6分泌的影响。结果显示,与CY模型组相比,太子参多糖高、中剂量组十二指肠SIgA含量显著升高(P<0.05),太子参多糖高剂量组回肠SIgA含量极显著升高(P<0.01);太子参多糖高剂量组中十二指肠和回肠IL-2含量显著升高(P<0.05),十二指肠IL-6含量极显著升高(P<0.01),回肠IL-6含量显著升高(P<0.05)。上述结果表明太子参多糖在一定程度上能颉颃CY所致的肠道黏膜免疫损伤。 相似文献
19.
Effects of Pseudostellaria polysaccharides on the contents of intestinal mucosal SIgA, IL-2 and IL-6 in mice were reported in this paper.36 Kunming male mice with 18 to 22 g were randomly divided into six groups, blank control group, Pseudostellaria polysaccharides control group, cyclophosphamide (CY) model group, and Pseudostellaria polysaccharides low, middle, high dose groups.Each mouse in Pseudostellaria polysaccharides control group and Pseudostellaria polysaccharides low, middle, high dose groups was respectively treated with polysaccharides at the dose of 400, 100, 200 and 400 mg/kg body weight by intragastrical treatment for 19 continuous days, CY was given to each mouse in CY model group and Pseudostellaria polysaccharides low, middle, high dose groups by intraperitoneal injection with 100 mg/kg body weight in the 20th day, duodenum and ileum samples were collected from mice after 24 h, and SIgA, IL-2 and IL-6 contents were determined.The results showed that SIgA contents in duodenum were significantly increased (P<0.05) in Pseudostellaria polysaccharides middle and high dose groups compared to CY model group, SIgA contents in ileum were extremely significantly increased (P<0.01) in Pseudostellaria polysaccharides high dose group compared to CY model group.IL-2 contents in duodenum and ileum were significantly increased (P<0.05), IL-6 contents in duodenum were extremely significantly increased (P<0.01), IL-6 contents in ileum were significantly increased (P<0.05) in Pseudostellaria polysaccharides high dose group compared to CY model group.It was concluded that Pseudostellaria polysaccharide could antagonize intestinal mucosal injury caused by CY. 相似文献
20.
1. Three experiments were undertaken to test the efficacy of 2 enzymes targeting mainly the non-starch polysaccharides (NSPs) in rice bran. 2. In experiment one, 400 g rice bran/kg depressed chick performance and there was a significant decline in growth rate and food intake with increasing inclusion of rice bran (0, 200, 400 g). Neither enzyme had any benefit. 3. In experiment two, rice bran (inclusion 200 and 400 g/kg), did not alter growth rate, food intake or food conversion ratio of duckling (3 to 17 d of age). Again enzyme addition gave no response. 4. In experiment three, 300 g rice bran/kg stimulated duck (19 to 35 d of age) growth while 600 g rice bran/kg depressed growth but not food intake. Enzymes gave no response. 5. Relative gut viscosity declined with increasing rice bran inclusion as did dry matter in ileal digesta. There were differences between ducklings and chickens. 6. It was concluded that NSPs were not a significant factor in altering the nutritive value of rice bran and the enzymes used were therefore unlikely to be of benefit. 相似文献