回春口服液对小鼠肝肾心脑组织的影响

通过回春口服液对小鼠肝肾心脑组织和细胞微细结构的影响进行分析,结果表明,回春口服液具有使衰老小鼠肾基底膜变薄,肝细胞内糖原增多,双核增多,改善心肌出血、坏死、脂肪浸润和水肿以及脑组织变性作用。     

肺热净对小鼠免疫功能的作用

肺热净主要由连翘、牛蒡子、射干、麻黄等多味中药组成,系对古方精炼化裁而成,主要用于小儿外感肺系高热。本文研究了该药对正常及由环磷酰胺造成的免疫功能低下小鼠的免疫功能的影响,结果表明,该药不仅能增加非特异性免疫功能,而且能提高特异性体液免疫和细胞免疫反应。     

血汗净口服液对大鼠血流变及小鼠肠系膜微循环的影响

观察血汗净口服液对大鼠血液流变学及小鼠肠系膜微循环的影响。方法:60只大鼠,雌雄各半,体重230-250g,随机分为血汗净口服液5.73g/kg、11.47g/kg、22.93g/kg,三七片0.86g/kg(分别相当于临床等效剂量的1、2、4、2倍)、模型及生理盐水组,灌     

何首乌对小鼠免疫功能的影响

本文研究了何首乌对小鼠免疫功能的影响。结果表明,何首乌能明显促进小鼠脾细胞对ConA和LPS的增殖反应,并且本身对脾细胞具有丝裂原作用。进一步研究表明,何首乌能明显增强小鼠特异抗体分泌细胞的功能,增强异型小鼠脾细胞诱导的迟发型超敏反应,并能促进细胞毒性T淋巴细胞对靶细胞的杀伤功能。     

红光、红外线照射对荷瘤小鼠免疫功能的影响

目的:研究红外线、红光单独照射及联合照射对荷瘤小鼠免疫功能及肿瘤生长的影响。材料与方法:红外线:波长2.5～5.0mm、强度0.06W/cm2;红光:波长628mm、强度500LX/cm2;分别采用红外线、红光及二者联用照射H22肿瘤小鼠,观察外周血T淋巴细胞转化率、RBC-CR1花环率、RBC-IC花环率及抑瘤率。结果:单纯红光照射不能提高荷瘤鼠的免疫功能;红外线照射可提高荷瘤鼠T淋巴细胞转化率、RBC-CR1花环率,与肿瘤对照组比较P<0.05;二者联用可提高淋转率、RBC-CR1花环率,与红外线组比较P<0.05,瘤重低于对照组。结论:红外线照射可提高荷瘤鼠的免疫功能;红光红外线联用可提高荷瘤鼠的免疫功能,优于单纯红外线照射,并抑制肿瘤生长。     

胸腺肽α1对小鼠免疫功能的影响

<正>胸腺肽al(thymosin al,tal)是70年代后期发现的胸腺肽提取物第五组份(TF5)中的一种成分,其为一由28个氨基酸组成的多肽。研究发现Tel可以提高衰老引起的低下的小鼠免疫功能,但其作用机理尚未完全阐明,发现Tal主要促使T细咆的分化及成熟,提高T细胞前体的频率,使IL-2的生成及其高亲和力受体的表达增加,提高Th细胞的功能使机体能有效地发挥免疫防护功能。本文应用Tal观察其对环磷酰胺所致免疫功能低下小鼠的免疫功能的影响。     

磁场对小鼠免疫功能影响的实验研究

<正> 磁场对机体的免疫学效应日益被人们重视。本文旨在探讨磁场对机体免疫系统的影响,以便为预防磁场对机体免疫系统的损伤及磁疗提供实验依据。     

养颜口服液对小鼠的免疫促进作用及抗衰老作用

养颜口服液对小鼠的免疫促进作用及抗衰老作用史红，刘雪莉，钱伯初，李兰妹，陈凯，陈珏浙江省医学科学院药物研究所杭州３１００１３保健药养颜口服液由胎盘、珍珠粉、白芷、构杞等组成本，文报道其免疫调节功能及抗衰老作用。１材料和方法１．１动物ＩＣＲ系小鼠，体重...     

高压氧对实验性小鼠脑缺氧学习记忆功能的影响

高压氧对实验性小鼠脑缺氧学习记忆功能的影响刘诗翔王惠玲谢卫李智炎成都军区昆明总医院中心实验科目前认为各种原因导致急慢性脑缺氧后，都可引起学习记忆功能的障碍。临床上常用高压氧（ＨＢＯ）来作为治疗手段。本文系观察ＨＢＯ对动物脑缺氧所致学习记忆功能障碍的影...     

比较同一复方中用红芪与用黄芪对免疫抑制小鼠淋巴细胞和Th1/Th2型细胞因子的影响

目的比较研究红芪替换玉屏风口服液和复芪止汗颗粒中的黄芪后对免疫抑制小鼠淋巴细胞亚群和Th1/Th2型细胞因子的调节作用。方法通过给小鼠腹腔注射免疫抑制剂环磷酰胺致成免疫功能低下模型,以相同剂量的红芪替换玉屏风口服液和复芪止汗颗粒中的黄芪灌胃进行体内拮抗实验,测定胸腺指数、脾脏指数、淋巴细胞亚群、血清IL-4、IFN-γ的含量。结果含黄芪和含红芪的玉屏风和复芪止汗组均能拮抗被环磷酰胺抑制的小鼠胸腺指数、脾脏指数和CD19+、CD3+、CD4+和CD8+淋巴细胞百分比以及血清IL-4、IFN-γ的含量。其中含红芪的玉屏风组的部分作用优于含黄芪组。结论含黄芪和含红芪的玉屏风和复芪止汗组均能拮抗环磷酰胺诱导的脾脏中T、B淋巴细胞亚群的失衡,恢复T、B淋巴细胞亚群的正常比例,同时含红芪的玉屏风组更能使其向正常比值回归。     

Crystallization of oral fluid components in patients with type 1 diabetes mellitus

We systematized and described morphological criteria characterizing crystalline aggregates in mixed saliva from patients with type 1 diabetes mellitus.__________This revised version was published online in August 2005 with the addition of the issue titleTranslated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 139, No. 1, pp. 22–24, January, 2005     

Crystallization of oral fluid components in patients with type 2 diabetes mellitus

Crystal aggregations of oral fluid from normal subjects and patients with type 2 diabetes mellitus were examined. Morphological signs characterizing crystal aggregations of salivary pools from patients with type 2 diabetes mellitus are described and classified. Translated fromByulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 138, No. 9, pp. 345–347, September, 2004     

Crystallization of oral fluid components in patients with type 2 diabetes mellitus

Crystal aggregations of oral fluid from normal subjects and patients with type 2 diabetes mellitus were examined. Morphological signs characterizing crystal aggregations of salivary pools from patients with type 2 diabetes mellitus are described and classified.Translated from Byulleten Eksperimentalnoi Biologii i Meditsiny, Vol. 138, No. 9, pp. 345–347, September, 2004     

小鼠羊水来源干细胞原代培养及向神经元的诱导分化

目的 研究小鼠羊水来源干细胞(mAFSC)的原代培养及向神经元的诱导分化. 方法 机械手段抽取孕中期小鼠羊水,体外培养扩增,观察细胞生长特性;流式细胞仪检测mAPSC表面抗原表达;锥虫蓝检测P3、P8、P13代mAFSC细胞活性.体外用神经元诱导液诱导mAFSC分化为神经元,并用免疫荧光检测神经元特异性表面标志β-tubulin. 结果 原代mAFSC培养7～10 d可以贴壁生长至80%以上,细胞数达3.5×105～4.0×105个.经3次以上传代以后,mAFSC呈现较均一的梭形细胞,并呈栅栏样排列.mAFSC在体外活性及增殖能力较强,经90 d以上的体外培养,P17代的细胞才出现细胞形态变化及增殖能力明显下降.流式细胞仪检测结果显示,表面抗原Sca-1、CD29阳性;CD11b、CD34及CD45为阴性.mAFSC经神经元诱导液诱导3 d之后,可于体外形成神经样细胞,同时部分细胞表达β-tubulin. 结论 mAFSC在体外具有很好的活性及增殖能力,且拥有定向分化的潜能,为今后的小鼠动物实验细胞治疗研究提供了一种新的干细胞.     

锌对小鼠组织金属硫蛋白表达的影响

目的：探讨锌（Zn）对小鼠各脏器金属硫蛋白（MT）含量的影响。方法：采用[¹⁰⁹Cd]-hem饱和法测定组织MT蛋白含量。结果：10mg Zn/kg腹腔注射后8-48 h小鼠肝脏及脾脏MT含量明显高于对照组（P<0.05, P<0.01）注射后24 h，MT含量达峰值；2.5-10 mg Zn/kg注射后16 h肝脏MT含量或5-10 mg Zn/kg注射后16 h脾脏MT含量均显著高于对照组（P<0.01）。但注Zn后脑及胸腺MT含量无明显差异。结论：Zn能迅速诱导小鼠肝脏及脾脏MT蛋白合成，并呈明显的剂量依赖性增加；Zn诱导小鼠组织MT合成具有明显的组织器官特异性。     

知杞冲剂对成人牙周炎疗效的评价

目的:观察知杞冲剂对成人牙周炎的辅助治疗效果。方法:对100例成人牙周炎患者先行龈上洁治、龈下刮治术,然后随机分为两组,对照组32例采用甲硝唑口服治疗;试验组68例采用知杞冲剂口服治疗。分别观察治疗前后疼痛反应、出血指数、菌斑指数、探诊深度、牙周袋内微生物变化及不良反应等,观察期为30d。结果:知杞冲剂对成人牙周炎的显效率明显高于甲硝唑治疗组(P＜0.05);出血指数、菌斑指数和探诊深度均显著低于对照组(P＜0.05)。结论:知杞冲剂能有效改善牙周状况,对成人牙周炎有显著辅助治疗效果;知杞冲剂药源充足,制备简便,无毒副作用,具有临床推广价值。     

Inhibition of 4-nitroquinoline-1-oxide-induced oral carcinogenesis by dietary calcium

Calcium is a strong inducer of keratinocyte differentiation. We have previously demonstrated that extracellular calcium promotes keratinocyte differentiation via E-cadherin-catenin complex-mediated phospholipase C-γ1 (PLC-γ1) activation in the plasma membrane. However, it is unclear whether dietary calcium regulates keratinocyte proliferation, differentiation or carcinogenesis. To address this issue, the rates of oral tumor and levels of proliferation and differentiation in the oral epithelium were assessed in mice on different calcium diets and the carcinogen 4-nitroquinoline-1-oxide. The results showed that mice on the high calcium diet had lower rates of oral tumors, lower levels of proliferation and higher levels of differentiation in the normal oral epithelium than those on the normal calcium diet. Higher levels of E-cadherin, β-catenin, p120-catenin (p120), epidermal growth factor receptor (EGFR), and calcium and lower levels of PLC-γ1 were also noted in the normal oral epithelium in mice on high calcium diet than the control mice. In contrast, mice on low calcium diet had opposite effects. However, dietary calcium had no effect on the proliferation, differentiation or the levels of E-cadherin, β-catenin, p120, PLC-γ1 and EGFR in oral tumors. These data indicate that dietary calcium increases calcium levels in oral epithelium, suppresses oral carcinogenesis, inhibits proliferation and promotes differentiation of normal oral epithelium. Increased E-cadherin, β-catenin, p120 and EGFR and decreased PLC-γ1 may participate in the inhibitory effect of dietary calcium in oral carcinogenesis.     

Amorphous nanosilica particles block induction of oral tolerance in mice

The mucosal immune system is exposed to non-self antigens in food and the gut microbiota. Therefore, the recognition of orally ingested non-self antigens is suppressed in healthy individuals to avoid excessive immune responses in a process called “oral tolerance”. The breakdown of oral tolerance has been cited as a possible cause of food allergy, and amorphous silica nanoparticles (nSP) have been implicated in this breakdown. As nSP are widely used in foodstuffs and other products, exposure to them is increasing; thus, investigations of any effects of nSP on oral tolerance are urgent. This study evaluated the effects of nSP30 (particle diameter =?39?nm) on immunological unresponsiveness induced in mice with oral ovalbumin (OVA). Specifically, production of OVA-specific antibodies, splenocyte proliferation in response to OVA, and effects on T-helper (T_H)-1, T_H2, and T_H17 responses (in terms of cytokine and IgG/IgE subclass expression) were evaluated. nSP30 increased the levels of OVA-specific IgG in OVA-tolerized mice and induced the proliferation of OVA-immunized splenocytes in response to OVA in a dose-related manner. nSP30 also increased the expression of OVA-specific IgG₁, IgE, and IgG_2a, indicating stimulation of the T_H1 and T_H2 responses. The expression of interferon (IFN)-γ (T_H1), interleukin (IL)-4 and IL-5 (T_H2), and IL-17 (T_H17) was also stimulated in a dose-related manner by nSP30 in splenocytes stimulated ex vivo with OVA. The induction of tolerance by OVA, the production of anti-OVA IgG antibodies, and proliferation of splenocytes in response to OVA was inhibited by nSP30 in conjunction with OVA and was dose-related. The nSP30 enhanced T_H1 and T_H2 responses that might prevent the induction of oral tolerance. Overall, this study showed that the abrogation of OVA-induced oral tolerance in mice by exposure to nSP30 was dose-related and that nSP30 stimulated T_H1, T_H2, and T_H17 responses.     

Reliable detection and quantitation of viral nucleic acids in oral fluid: Liquid phase-based sample collection in conjunction with automated and standardized molecular assays

Oral fluid has been used widely as sample matrix for the detection and quantitation of viral nucleic acids. However, in the vast majority of previous studies, various methods for collection of oral fluid and molecular assays lacking automation and standardization were used. In this study, a new standardized liquid phase-based saliva collection system was employed followed by a fully automated viral nucleic acid extraction and real-time PCR using commercially available in vitro diagnostics (IVD)/Conformité Européene (CE) labeled molecular assays. When the lower limit of detection of herpes simplex virus (HSV)-1/2 DNA, varicella zoster virus (VZV) DNA, and hepatitis C virus (HCV) RNA in spiked oral fluid was tested, the results were found to be comparable to those with defined sample materials recommended by the assay manufacturers. When clinical specimens were investigated, 21 of 25 (84%) oral fluids obtained from patients with clinically apparent herpetic lesions tested positive for HSV DNA, 7 of 10 (70%) oral fluids obtained from patients with Ramsay Hunt Syndrome tested positive for VZV DNA, and 19 of 40 (48%) oral fluids collected from patients with chronic HCV infection tested positive for HCV RNA. The automated extraction instruments completed all extractions without malfunction and no inhibitions were observed throughout the entire study. Liquid phase-based saliva collection in conjunction with automated and standardized commercially available molecular assays allows reliable quantitation of viral nucleic acids in oral fluid samples and may contribute to improved comparable and interpretable test results.