Effect of Pseudostellaria Polysaccharides on SIgA,IL-2 and IL-6 Contents of Intestinal Mucosal Injured Mice Caused by Cyclophosphamide

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.     

芪苓制剂多糖对环磷酰胺所致免疫损伤小鼠血清SOD和MDA的影响

探讨芪苓制剂多糖对环磷酰胺所致免疫损伤小鼠血清SOD和MDA的影响。将75只体重18-22 g的雄性昆明小鼠随机均分为5组,即空白对照组、环磷酰胺(CY)组和芪苓制剂多糖低、中、高剂量组,芪苓制剂多糖3个剂量组小鼠分别灌服低(200 mg/kg)、中(400 mg/kg)、高(600 mg/kg)剂量芪苓制剂多糖,空白对照组和CY组分别灌服等量的蒸馏水,1次/d,连续19 d。试验第20天,空白对照组小鼠腹腔注射生理盐水,其余4组均腹腔注射100 mg/kg CY,24 h后,各组小鼠摘除眼球采血,检测小鼠血清SOD活性和MDA含量。结果表明,与CY组相比,芪苓制剂多糖3个剂量组小鼠血清SOD活性均极显著升高(P<0.01),MDA含量均极显著降低(P<0.01)。结果表明,芪苓制剂多糖能改善环磷酰胺所致免疫损伤小鼠的抗氧化能力。     

Study on the Antitumor Effects of Low—energy Laser Irradiation Combined with Cyclophosphamide

1　Introduction　　 Surgery,irradiation and chemical treatment are three main therapies in treating cancers,and thesethree treatments usually combined together to obtain better effects,but irradiation and chemical treatmentcan cause immunosuppressive effects.The relationship between tumor,body,irradiation and chemical treat-ment is very complicated.How to protect immunity of the body and kill tumor at the most has become akey problem in treating malignanttumor.It was proved that proper dosages…     

玉屏风多糖对小鼠派氏结形态结构及其T细胞亚群的影响

通过研究玉屏风多糖（YPF-P）对小鼠派氏结（Peyer's patches,PPs）形态结构及其T细胞亚群的影响,探讨其对小鼠肠黏膜的免疫调节作用。选取96只SPF小鼠随机分为6组,分别为空白对照组（0.2 mL生理盐水）、YPF-P阳性对照组（YPF-P 200 mg/kg）、环磷酰胺（cyclophosvnamide,Cy）免疫抑制组（80 mg/kg Cy）及YPF-P低、中、高剂量组（100、200、400 mg/kg YPF-P）,饲喂1周,取小肠PPs,常规切片HE染色后应用图像分析技术检测PPs形态结构的变化;体外培养小鼠PPs淋巴细胞,采用流式细胞术研究PPs中T淋巴细胞亚群的变化。结果表明,YPF-P对小鼠小肠PPs的生长发育具有促进作用,Cy可极显著降低小鼠小肠PPs面积、小肠纵切面面积及PPs面积和小肠纵切面面积的比值（P < 0.01）,低、中、高剂量YPF-P可在一定程度上缓解Cy对小鼠小肠的损伤作用。同时,YPF-P可显著或极显著提高PPs中CD3⁺、CD4⁺ T淋巴细胞及CD4⁺/CD8⁺（P < 0.05; P < 0.01）。结果显示,YPF-P能提高Cy诱导的免疫抑制小鼠的肠黏膜免疫功能,并能促进PPs中相关T淋巴细胞增殖,对小鼠肠黏膜功能具有增强作用。     

EGF—PE40抗原性检定

EGF-PE40是由人表皮生长因子（EGF）基因与绿脓杆菌外毒素A（PEA）的跨膜亚单位和毒力亚单位（PE40）基因融合，在大肠杆菌内表达的重组毒素。它可以特异性识别EGF受体过度表达的癌细胞，具有特异杀伤癌细胞的作用。该融合蛋白的Mr为4.55×104，如作为药物长期静注可能致使病人体内抗体水平增高，从而影响其药效。本试验以家兔为模型，连续28d（1个疗程）静注EGF-PE40纯品，应用ELISA和琼扩分别测定了其血清中结合抗体水平和中和抗体水平的动态变化。结果显示，血清结合抗体水平随静注时间的延长而增高，28d时最高可达1∶212；在静注EGF-PE40的同时，静注2倍于人体剂量的免疫抑制剂环磷酰胺，其血清结合抗体水平与不用环磷酰胺组相比虽略有降低，但经F检验，二者无显著性差异；应用试验28d结合抗体水平最高的兔血清与不同质量浓度（80、40、20、10、5、2.5mg/L）的EGF-PE40进行琼扩，均无沉淀线产生；被检血清、健兔血清和阳性对照血清分别与质量浓度为105、35、28mg/L的EGF作用24h后，再与阳性对照血清进行琼扩反应,结果除阳性对照血清与105mg/LEGF-PE40的反应物无沉淀生成外，其余各孔均有沉淀线生成，表明连续28d用药未在兔体内产生可检测到的中和抗体，与用弗氏佐剂免疫制备的阳性对照兔血清相比较，其中和抗体不足以削弱EGF-PE40的作用。     

桃金娘果多糖对免疫抑制小鼠免疫功能的影响

【目的】 探讨桃金娘果多糖对免疫抑制小鼠免疫功能的影响。【方法】 腹腔注射环磷酰胺80 μg/g BW, 1次/d, 连续3 d, 建立小鼠免疫抑制模型。将造模成功的小鼠随机分为5组(每组16只): 模型组、黄芪多糖组、桃金娘果多糖低、中、高剂量组。另设16只健康小鼠为正常组。黄芪多糖组每只小鼠按200 μg/g BW剂量腹腔注射黄芪多糖混悬液, 桃金娘果多糖低、中、高剂量组分别按50、100、200 μg/g BW剂量腹腔注射桃金娘果多糖混悬液, 正常组和模型组每只小鼠腹腔注射等体积的生理盐水, 1次/d, 连续7 d。试验结束后, 分别测定小鼠脏器指数(胸腺、脾脏)、血清中白细胞介素1β(IL-1β)、白细胞介素2(IL-2)、白细胞介素6(IL-6)、γ干扰素(IFN-γ)、溶菌酶(LZM)的含量和过氧化物酶(POD)活性。【结果】 桃金娘果多糖不同剂量组小鼠胸腺指数和脾脏指数均有不同程度提高, 尤以桃金娘果中剂量组最高, 与模型组相比差异极显著(P<0.01)。桃金娘果多糖不同剂量组IL-6、IL-1β血清细胞因子含量均极显著高于模型组(P<0.01);桃金娘果多糖低、中剂量组的血清IFN-γ、IL-2含量相较于模型组都有所提升, 但差异均不显著(P>0.05), 桃金娘果多糖高剂量组的IFN-γ、IL-2含量均极显著高于模型组(P<0.01)。桃金娘果多糖不同剂量组小鼠的POD活性和LZM含量均极显著或显著高于模型组(P<0.01;P < 0.05)。【结论】 桃金娘果多糖中剂量即100 μg/g BW对免疫抑制小鼠免疫功能的恢复效果最佳。     

牛磺酸复合添加剂对免疫低下小鼠免疫功能的影响

【目的】研究在基础饲粮中添加牛磺酸复合添加剂对免疫低下模型小鼠免疫功能的影响,旨在为提高动物免疫机能的营养调控措施提供一定的理论依据。【方法】将80只小鼠随机均分为4组：C和M组小鼠饲喂基础饲粮,H和MH组小鼠给予含有8.8%的牛磺酸复合添加剂的基础饲粮,试验期51 d。M和MH组小鼠于试验第31天起连续4 d腹腔注射70 μg/g BW环磷酰胺（CTX）,制备免疫低下模型,其余小鼠腹腔注射等体积生理盐水。统计整个试验期的日采食量,每周称量小鼠体重,并计算平均日采食量（ADFI）和平均日增重（ADG）。试验结束后,采集小鼠血清及胸腺和脾脏,检测小鼠免疫器官指数、细胞免疫、体液免疫、非特异性免疫功能及血清中细胞因子和免疫球蛋白水平的变化。【结果】与C组相比,M组小鼠ADFI、耳肿胀度、血清溶血素水平、免疫球蛋白G （IgG）水平显著降低（P<0.05）,ADG、胸腺指数、脾淋巴细胞增殖能力、抗体生成细胞量、腹腔巨噬细胞吞噬能力、白介素6（IL-6）和免疫球蛋白A （IgA）水平极显著降低（P<0.01）,脾脏指数极显著升高（P<0.01）;碳廓清指数和免疫球蛋白M （IgM）水平无显著差异（P>0.05）;与M组相比,MH组小鼠的ADFI、ADG、胸腺指数、脾淋巴细胞增殖能力、耳肿胀度和IgM水平均显著提高（P<0.05）,血清溶血素水平、抗体生成细胞量、腹腔巨噬细胞吞噬能力、IL-6和IgA水平均极显著提高（P<0.01）,脾脏指数显著降低（P<0.05）,碳廓清指数和IgG水平无显著差异（P>0.05）。【结论】该牛磺酸复合添加剂能够改善由CTX所致免疫低下小鼠的固有免疫和适应免疫,改善细胞因子和免疫球蛋白的水平,起到增强小鼠免疫力的作用。     

Ameliorative Effects of Peptides Derived from Oyster (Crassostrea gigas) on Immunomodulatory Function and Gut Microbiota Structure in Cyclophosphamide-Treated Mice

The intestinal flora is recognized as a significant contributor to the immune system. In this research, the protective effects of oyster peptides on immune regulation and intestinal microbiota were investigated in mice treated with cyclophosphamide. The results showed that oyster peptides restored the indexes of thymus, spleen and liver, stimulated cytokines secretion and promoted the relative mRNA levels of Th1/Th2 cytokines (IL-2, IFN-γ, IL-4 and IL-10). The mRNA levels of Occludin, Claudin-1, ZO-1, and Mucin-2 were up-regulated, and the NF-κB signaling pathway was also activated after oyster peptides administration. Furthermore, oyster peptides treatment reduced the proportion of Firmicutes/Bacteroidetes, increased the relative abundance of Alistipes, Lactobacillus, Rikenell and the content of short-chain fatty acids, and reversed the composition of intestinal microflora similar to that of normal mice. In conclusion, oyster peptides effectively ameliorated cyclophosphamide-induced intestinal damage and modified gut microbiota structure in mice, and might be utilized as a beneficial ingredient in functional foods for immune regulation.     

增精宝对环磷酰胺致小鼠生精障碍保护作用的研究

为评价增精宝对雄性动物生精作用的影响,采用环磷酰胺致小鼠生精障碍为动物模型,考察不同剂量增精宝对环磷酰胺致小鼠生精障碍的保护作用。结果显示,高剂量组对小鼠的附睾、睾丸、储精囊和前列腺均有较显著的促进作用;低剂量组精子总密度和精子活率均差异显著(P<0.05);高剂量组精子活率差异显著(P<0.05);对小鼠睾丸各倍体生精细胞比例的影响,高剂量组小鼠睾丸生精小管较为饱满,管腔内存在大量精子,生精上皮较厚,可见各级生精细胞排列整齐,界膜明显,睾丸间质细胞排列整齐。结论表明,增精宝两种剂量均能够显著促进环磷酰胺导致小鼠生精障碍的保护作用,高剂量组对雄性小鼠的作用尤为显著。     

白术多糖对环磷酰胺致雏鸡肝脏细胞凋亡中线粒体通路的影响

试验旨在从线粒体介导的细胞凋亡通路,探讨白术多糖(PAMK)对环磷酰胺(CTX)诱导的雏鸡肝脏损伤的影响。试验选取1日龄岭南黄鸡240羽,随机分成4组:对照(Control)、环磷酰胺(CTX)、白术多糖(PAMK)以及白术多糖环磷酰胺联合组(PAMK+CTX)。试验结束后,采集雏鸡肝脏组织,用于形态学观察及线粒体介导的细胞凋亡通路相关基因mRNA表达量和蛋白表达水平检测。光镜结果显示,环磷酰胺诱导雏鸡肝脏组织细胞形态结构不完整、肝细胞索排列紊乱、空泡化。电镜结果显示,环磷酰胺可导致雏鸡肝脏组织细胞线粒体明显受损,并发生细胞凋亡。从分子水平探讨线粒体介导的细胞凋亡通路结果显示,环磷酰胺可导致雏鸡肝脏组织中促凋亡基因Caspase-3、Caspase-8、Caspase-9、Bax和p53 mRNA表达量显著升高(P0.05),抑凋亡基因Bcl-2mRNA表达量显著降低(P0.05)。白术多糖环磷酰胺联合组雏鸡肝脏组织中Caspase-3、Caspase-8、Bax的mRNA表达量显著降低(P0.05),Bcl-2 mRNA表达量显著升高(P0.05)。此外,白术多糖环磷酰胺联合组雏鸡肝脏组织中Caspase-3蛋白表达水平显著降低(P0.05),Bcl-2蛋白表达水平显著升高(P0.05)。研究结果表明,环磷酰胺可诱导雏鸡肝细胞凋亡,白术多糖可通过调节线粒体通路相关基因表达抵抗环磷酰胺诱导雏鸡肝细胞凋亡,对雏鸡肝脏产生保护作用。