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Insights into sensitizing and eliciting capacity of gastric and gastrointestinal digestion products of shrimp(Penaeus vannamei)proteins in BALB/c mice
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作者 Yao Liu Songyi Lin +3 位作者 Kexin Liu Shan Wang Wang Li Na Sun 《Food Science and Human Wellness》 SCIE CSCD 2024年第1期339-348,共10页
Shrimp(Penaeus vannamei)proteins have been shown an allergenic potential;however,little information is available on the sensitizing and eliciting capacity of shrimp protein digestion products.In this study,a BALB/c mi... Shrimp(Penaeus vannamei)proteins have been shown an allergenic potential;however,little information is available on the sensitizing and eliciting capacity of shrimp protein digestion products.In this study,a BALB/c mice model was used to explore the allergenicity of shrimp protein sample(SPS)and their gastric and gastrointestinal digestion products(GDS/GIDS).As compared with the SPS groups,the GDS/GIDS groups caused lower specific immunoglobulins(Ig E/Ig G1)levels(P<0.05),but higher than the control groups,indicating that the digestion products sensitized the mice.Meanwhile,spleen index,mouse mast cell protease-1(m MCP-1)concentration and proportion of degranulated mast cells were significantly reduced in the GDS/GIDS groups(P<0.05);simultaneously,allergic symptoms,vascular permeability and histopathological changes of tissues were alleviated.Nevertheless,the allergenicity of digestion products cannot be eliminated and still cause systemic allergic reactions in mice.The study showed that the digestion products of shrimp still had high sensitizing and eliciting capacity. 展开更多
关键词 Penaeus vannamei ALLERGENIcITY DIGESTION balb/c mice model
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不同基因型牛病毒性腹泻病毒对BALB/c小鼠致病性研究
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作者 刘镝钺 程子龙 +8 位作者 陈益 陈思宇 李文良 毛立 杨蕾蕾 孙敏 张纹纹 熊富强 刘茂军 《畜牧与兽医》 CAS 北大核心 2024年第4期72-77,共6页
牛病毒性腹泻病毒(BVDV)是危害养牛业的重要病原。2021年本实验室从患有肺炎的牛肺中分离出1株BVDV(毒株编号为JS2201),经鉴定为1b亚型。为了评价该分离株的毒力与致病性,分别建立了分离株与参考株BVDV-1型Oregon C24V株、BVDV-2型C1602... 牛病毒性腹泻病毒(BVDV)是危害养牛业的重要病原。2021年本实验室从患有肺炎的牛肺中分离出1株BVDV(毒株编号为JS2201),经鉴定为1b亚型。为了评价该分离株的毒力与致病性,分别建立了分离株与参考株BVDV-1型Oregon C24V株、BVDV-2型C1602株BVDV感染BALB/c小鼠模型,通过检测攻毒后小鼠临床症状、体重变化、病毒血症情况、血液中白细胞与淋巴细胞的变化、组织器官的病理组织学变化及病毒载量,比较了分离株JS2201与1型和2型参考株的致病性差异。结果显示:BVDV分离株JS2201与参考株均能够成功感染BALB/c小鼠,攻毒BALB/c小鼠均形成病毒血症,导致血液中白细胞数量、淋巴细胞数量以及淋巴细胞百分比短暂下降;BVDV分离株JS2201株攻毒组小鼠肝脏、肾脏、肺脏、脾脏中BVDV载量要高于C24V、C1602株攻毒组;攻毒组小鼠均表现为间质性肺炎病变,JS2201株攻毒组与1型参考株C24V株攻毒组小鼠肺脏病理组织学变化相似,BVDV-2型参考株C1602株攻毒组小鼠肺脏病变更为严重。综上,本研究成功建立了不同亚型BVDV急性感染BALB/c小鼠的模型,且比较分析了分离株与参考株之间的致病性差异,为BVDV疫苗的研制以及致病机制的研究奠定了基础。 展开更多
关键词 牛病毒性腹泻病毒 balb/c小鼠 致病性 基因型
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面愈贴促进Balb/c小鼠急性面神经损伤后神经功能恢复的作用机制
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作者 刘小青 赵格 +2 位作者 梁晓燕 郑翠娟 张睿 《中国急救医学》 CAS CSCD 2024年第7期603-610,共8页
目的 研究面愈贴促进急性面神经损伤神经功能恢复的作用和可能的机制。方法 随机将120只无特定病原体(SPF)雄性Balb/c小鼠分为假手术组(Sham组,n=40)、模型组(Model组,n=40)和治疗组(M+MYT组,n=40)。模型组和M+MYT组小鼠压榨面神经主干... 目的 研究面愈贴促进急性面神经损伤神经功能恢复的作用和可能的机制。方法 随机将120只无特定病原体(SPF)雄性Balb/c小鼠分为假手术组(Sham组,n=40)、模型组(Model组,n=40)和治疗组(M+MYT组,n=40)。模型组和M+MYT组小鼠压榨面神经主干建立急性面神经损伤模型。造模成功后,M+MYT组小鼠给予面愈贴贴敷治疗24 h, Sham组和Model组不做处理。各组每24 h进行面神经功能评分。术后第9天采集脑干面神经核、面神经主干组织和眼球静脉血样本;苏木精-伊红(HE)染色和透射电子显微镜观察面神经主干和面神经核神经元的形态变化;免疫荧光和蛋白质免疫印迹分别检测小鼠面神经核单核细胞趋化蛋白-1(MCP-1)、肿瘤坏死因子-α(TNF-α)、诱导型一氧化氮合酶(iNOS)、内皮型一氧化氮合酶(eNOS)、内皮素-1(ET-1)和血管内皮生长因子(VEGF)表达;酶联免疫吸附试验(ELISA)检测小鼠血清MCP-1、TNF-α、iNOS、eNOS、ET-1和VEGF表达;硝酸还原法检测血清中一氧化氮(NO)浓度。结果 术后第9天,M+MYT组小鼠面神经功能评分低于Model组(P<0.05);HE染色和透射电子显微镜显示,M+MYT组面神经核神经元和神经纤维的损伤较Model组明显改善;免疫荧光、蛋白质免疫印迹和ELISA检测显示,M+MYT组MCP-1、TNF-α、iNOS、ET-1和VEGF表达显著低于Model组(P<0.05),而eNOS表达高于Model组(P<0.05);硝酸还原法显示,NO浓度以M+MYT组最高,Sham组最低(P<0.01)。结论 面愈贴可降低急性面神经损伤后MCP-1、TNF-α、iNOS、ET-1及VEGF表达,增强eNOS和NO表达,有效控制炎症,保护微血管内皮功能,降低血管通透性,促进神经功能恢复。 展开更多
关键词 急性面神经损伤 微血管内皮功能 炎症 balb/c小鼠
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基于Micro-CT的BALB/c小鼠肺腺瘤动物模型研究
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作者 简芹 向思睿 +5 位作者 王楚楚 陈芜 付西 由凤鸣 郑川 林俊芝 《中国实验动物学报》 CAS CSCD 北大核心 2024年第4期485-492,共8页
目的 建立基于Micro-CT动态表征的BALB/c小鼠肺腺瘤动物模型研究方法。方法 取80只SPF级雌性BALB/c小鼠,随机分为4组:模型低剂量组(1 mg/g乌拉坦腹腔注射1次)、模型中剂量组(1 mg/g乌拉坦腹腔注射,每周1次,连续2周)、模型高剂量组(1 mg/... 目的 建立基于Micro-CT动态表征的BALB/c小鼠肺腺瘤动物模型研究方法。方法 取80只SPF级雌性BALB/c小鼠,随机分为4组:模型低剂量组(1 mg/g乌拉坦腹腔注射1次)、模型中剂量组(1 mg/g乌拉坦腹腔注射,每周1次,连续2周)、模型高剂量组(1 mg/g乌拉坦腹腔注射,每周1次,连续4周)和空白组(等体积生理盐水腹腔注射)。采用Micro-CT定期监测小鼠肺结节生长情况,Analyze 12.0分析系统绘制小鼠肺部3D图像,苏木素-伊红(HE)染色观察肺组织病理学变化。结果 与空白组相比,各模型组小鼠第11周时均观测到类圆形高密度影的肺结节。结节形成率随造模周数增加而升高,至第21周时,模型高、中、低剂量组结节形成率分别为93.8%、93.8%、87.5%;结节数分别以2~4个、1个、1~2个为主;低剂量组肺结节最大直径平均值高于中、高剂量组(P<0.05);肺结节体积三组之间差异无统计学意义。HE染色结果显示模型高、中、低剂量组病理类型均为肺腺瘤。结论 模型各剂量组均成功诱导肺腺瘤,Micro-CT可对小鼠肺结节生长情况进行表征,其中模型中剂量组结节形成率高,肺腺瘤数量适中,模型稳定,更适合小鼠肺腺瘤动物模型的研究。 展开更多
关键词 乌拉坦 balb/c小鼠 肺腺瘤 MIcRO-cT 动物模型
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美洛昔康对荷瘤BALB/c小鼠的围手术期镇痛效果
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作者 刘师佳 高硕磊 +1 位作者 覃尧 张红 《实验动物科学》 2024年第2期28-34,共7页
目的为了降低肿瘤切除术过程中小鼠的围手术期疼痛,保障动物福利最大化和研究数据的准确性,本研究探究美洛昔康对荷瘤小鼠的围手术期镇痛作用。方法所有BALB/c小鼠均采用舒泰和右美托嘧啶的麻醉方案,分为对照组(A组)和美洛昔康注射组(B... 目的为了降低肿瘤切除术过程中小鼠的围手术期疼痛,保障动物福利最大化和研究数据的准确性,本研究探究美洛昔康对荷瘤小鼠的围手术期镇痛作用。方法所有BALB/c小鼠均采用舒泰和右美托嘧啶的麻醉方案,分为对照组(A组)和美洛昔康注射组(B组)。采用面部表情评分系统和疼痛行为频率评估小鼠的疼痛程度;监测小鼠的体质量以及脏器的组织病理学方法评估其围手术期安全性。结果B组小鼠的麻醉诱导时间较A组缩短,苏醒时间较A组显著延长(P<0.01);术后3 d内,B组小鼠的面部表情评分和疼痛行为频率较A组显著降低;两组小鼠的主要脏器和肠道组织在组织病理学上均无明显病变,体质量无显著差异,B组小鼠全部存活。结论舒泰和右美托嘧啶麻醉方案联合美洛昔康可以缩短BALB/c小鼠的麻醉诱导时间并使其缓慢苏醒,显著地降低了小鼠的围手术期疼痛,且是安全的。 展开更多
关键词 balb/c小鼠 围手术期 镇痛 美洛昔康 动物福利
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腹腔注射攻毒建立蜱媒脑炎病毒感染BALB/c小鼠模型
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作者 唐万达 彭浩然 +1 位作者 赵平 赵兰娟 《海军军医大学学报》 CAS CSCD 北大核心 2024年第1期42-48,共7页
目的通过腹腔注射攻毒途径建立蜱媒脑炎病毒(TBEV)感染BALB/c小鼠模型,观察小鼠的感染症状和病毒在小鼠体内的复制特征。方法将6周龄雌性BALB/c小鼠随机分为未感染病毒对照组、1×10^(3)空斑形成单位(PFU)TBEV感染组(以每只小鼠1... 目的通过腹腔注射攻毒途径建立蜱媒脑炎病毒(TBEV)感染BALB/c小鼠模型,观察小鼠的感染症状和病毒在小鼠体内的复制特征。方法将6周龄雌性BALB/c小鼠随机分为未感染病毒对照组、1×10^(3)空斑形成单位(PFU)TBEV感染组(以每只小鼠1×10^(3)PFU的攻毒剂量经腹腔注射感染小鼠)、1×10^(4)PFU TBEV感染组(以每只小鼠1×10^(4)PFU的攻毒剂量经腹腔注射感染小鼠),观察小鼠的感染症状、体重变化与生存情况。通过H-E染色观察小鼠脑、脾的病理改变,采用免疫组织化学染色检测小鼠脑、脾中TBEV蛋白的表达,采用空斑试验检测小鼠脑、脾中TBEV滴度的动态变化。结果1×10^(4)PFU TBEV感染组小鼠于感染后第6天出现弓背、后肢瘫痪等感染症状,1×10^(3)PFU TBEV感染组小鼠于感染后第7天出现上述症状。与未感染病毒对照组小鼠相比,1×10^(4)PFU TBEV感染组小鼠从第5天、1×10^(3)PFU TBEV感染组小鼠从第6天开始体重明显降低,差异有统计学意义(P<0.05)。1×10^(4)PFU TBEV感染组小鼠第7天开始死亡、第8天全部死亡,1×10^(3)PFU TBEV感染组小鼠第7天开始死亡、第9天全部死亡。H-E染色结果显示,TBEV感染后第5天、第7天小鼠大脑皮质仅出现少量神经元核固缩、深染,未观察到炎症细胞浸润;TBEV感染后第5天小鼠脾红髓轻度淤血、多见中性粒细胞,第7天中性粒细胞数量增多。免疫组织化学染色结果显示,TBEV感染后第5天小鼠脑与脾少量表达TBEV蛋白,第7天TBEV蛋白表达量增加。1×10^(3)PFU TBEV感染第7天,小鼠脑内TBEV滴度高达(1.3±0.6)×10^(5)PFU/mL,而脾中TBEV滴度为(1.3±0.6)×10^(3)PFU/mL。结论经腹腔注射攻毒成功建立了TBEV感染BALB/c小鼠模型,TBEV可在小鼠体内增殖并具致病性。 展开更多
关键词 蜱媒脑炎病毒 balb/c小鼠 腹腔注射 感染 致病性
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BALB/cSpf小鼠和野生型BALB/c小鼠生物学特性比较
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作者 刘京 张甦寅 +3 位作者 刘刚 王亮 周毅 战大伟 《实验动物科学》 2024年第1期12-17,共6页
目的比较分析BALB/cSpf小鼠与野生型BALB/c(N-BALB/c,N:normal)小鼠生物学特性指标差异,为其实验应用提供基础数据。方法3~12周,每周对雌雄BALB/cSpf小鼠和N-BALB/c小鼠生长曲线、采食量、饮水量进行统计分析;取BALB/cSpf小鼠雌性和N-BA... 目的比较分析BALB/cSpf小鼠与野生型BALB/c(N-BALB/c,N:normal)小鼠生物学特性指标差异,为其实验应用提供基础数据。方法3~12周,每周对雌雄BALB/cSpf小鼠和N-BALB/c小鼠生长曲线、采食量、饮水量进行统计分析;取BALB/cSpf小鼠雌性和N-BALB/c小鼠雌性各30只,二雌一雄长期同居交配方式繁殖饲养,记录产仔数,产仔性别;采集血液进行17项血液生化指标和22项血液生理指标测定。结果BALB/cSpf小鼠和N-BALB/c小鼠采食量和饮水量差异不显著(P>0.05),BALB/cSpf小鼠体质量显著高于N-BALB/c小鼠(雌性从第5周开始,雄性从第3周开始)。1~3胎产仔数及产仔性别差异不显著。雌性BALB/cSpf小鼠生理指标WBC、Neu、Lym、RBC、HGB、HCT、MPV、PDW显著高于N-BALB/c小鼠(P<0.01)。雄性BALB/cSpf小鼠生理指标WBC、Neu、Lym、Mon、HCT、MCHC显著低于N-BALB/c小鼠(P<0.01)。雌性BALB/cSpf小鼠生化指标UREA显著高于N-BALB/c小鼠(P<0.05);AST、CK、LDH显著低于N-BALB/c小鼠(P<0.01)。BALB/cSpf小鼠生化指标TG、TC、LIP、UREA、MgⅡ显著高于N-BALB/c小鼠(P<0.01);ALT、AST、Glu-G、Ca显著低于N-BALB/c小鼠(P<0.01)。结论BALB/cSpf小鼠和N-BALB/c小鼠生物学特性有一定差异。 展开更多
关键词 balb/cSpf小鼠 balb/c小鼠 生物学特性
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Assessment of immune responses and intestinal flora in BALB/c mice model of wheat food allergy via different sensitization methods
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作者 Chenglong Liu Chen Chen +5 位作者 Xingyu Yan Shimin Gu Xin Jia Wenhui Fu Xiao Meng Wentong Xue 《Food Science and Human Wellness》 SCIE CSCD 2023年第3期871-881,共11页
Increasing incidences showed that food allergies have attracted more and more attention from researchers.BALB/c mice were sensitized with wheat gluten combined with aluminum hydroxide adjuvant via intraperitoneal inje... Increasing incidences showed that food allergies have attracted more and more attention from researchers.BALB/c mice were sensitized with wheat gluten combined with aluminum hydroxide adjuvant via intraperitoneal injection,transdermal sensitization,and oral gavage sensitization route.Results showed that all the three sensitization methods could induce allergic symptoms;increase the serum antibody(total immunoglobulin E(IgE),specific IgE,IgG,IgA)and histamine content;promote the secretion of Th2 cytokines(interleukin(IL)-4,IL-5,IL-13)and inflammatory factors(IL-6,IL-17 A,IL-10);and inhibit the production of Th1 cytokines(IFN-γ,IL-2).However,the allergic symptoms of mice sensitized by intraperitoneal injection were the most obvious among the three models.The level of serum antibodies in intraperitoneal injection group was significantly higher than control.Subsequently,16 S rRNA sequencing technology was used to analyze the intestinal flora of mice.The results showed that the abundance of Firmicutes in the wheat protein sensitized group was lower than that in the normal group,while the abundance of Bacteroidetes was higher,and Lactobacillus was the difference marker in normal group.Bacterial species diversity analysis showed that the species richness and diversity of intestinal flora in mice were decreased,the difference between mice induced by intraperitoneal injection and normal control group mice was the most significant.Taken together,these results show that among three sensitization methods used to build a mouse model with aluminum hydroxide as adjuvant,intraperitoneal injection is the comparably best way to build a mouse sensitization mode. 展开更多
关键词 ALLERGY Wheat gluten balb/c mice Sensitization methods Intestinal flora
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Immunotoxicity of Acrylamide in Female BALB/c Mice 被引量:7
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作者 FANG Jin LIANG Chun Lai +1 位作者 JIA Xu Dong LI Ning 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2014年第6期401-409,共9页
Objective To investigate the immunotoxicity of acrylamide (ACR) in female BALB/c mice.Methods A total of 200 female mice weighing 18-22 g were randomly divided into four clusters based on body weight, and each weigh... Objective To investigate the immunotoxicity of acrylamide (ACR) in female BALB/c mice.Methods A total of 200 female mice weighing 18-22 g were randomly divided into four clusters based on body weight, and each weight-based cluster included five groups (10 mice per group): negative control, positive control (cyclophosphamide), low, intermediate, and high dose ACR groups, and all the groups were administered ACR by gavage for 30 days. At the end of the study, the immunotoxicological effects of the ACR were evaluated through immunopathology, humoral immunity, cellular immunity, and non-specific immunity. Results The terminal body weight, spleen and thymus weights, lymphocyte counts in the ACR-H group were decreased, pathological changes were observed in lymph glands, thymus and spleen. %T cells in blood lymphocytes were significantly increased in all ACR-treated groups, and a significant reduction of % natural killer(NK) cells and increase of %Th cells were observed in the ACR-H group. interleukin-6(IL-6), Concanavalin A(ConA)-induced splenocyte proliferation and serum half hemolysis value (HCso) were also significantly suppressed in the ACR-H group. Conclusion ACR elicited an inhibitory effect on cellular and humoral immunity of mice after 30 day feeding. 展开更多
关键词 Acrylamide(AcR) IMMUNOTOXIcITY Female balb/c mice
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Big-BALB/c小鼠亚系选育前后的抗体制备效率比较研究
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作者 王丹 张晓璐 +10 位作者 王妍 傅博 王文栋 刘京 张甦寅 武怡荷 吴德国 杜小燕 战大伟 章秀林 李长龙 《实验动物与比较医学》 CAS 2023年第6期612-618,共7页
目的比较利用BALB/c和Big-BALB/c(简称B-BALB/c)两种亚系小鼠制备鼠痘及鼠肝炎单克隆抗体的效率,为今后通过杂交瘤进行体内诱导单克隆抗体制备时实验动物的选择提供参考。方法从常规繁育的BALB/c小鼠群体中选择4周龄体重超过正常动物5%... 目的比较利用BALB/c和Big-BALB/c(简称B-BALB/c)两种亚系小鼠制备鼠痘及鼠肝炎单克隆抗体的效率,为今后通过杂交瘤进行体内诱导单克隆抗体制备时实验动物的选择提供参考。方法从常规繁育的BALB/c小鼠群体中选择4周龄体重超过正常动物5%(后期选种标准为超过10%)的个体进行选种并单独繁育,经10代选育制备B-BALB/c小鼠亚系。选择10~11周龄、雌雄各半的BALB/c小鼠和B-BALB/c小鼠各40只,分别接种用液体石蜡预处理后的鼠痘单克隆抗体杂交瘤细胞株G23或鼠肝炎单克隆抗体杂交瘤细胞株Y15,然后通过体内诱生法获取含单克隆抗体的小鼠腹水,利用间接ELISA法检验抗体效价,按照品系、性别和接种杂交瘤类型对小鼠进行分组,分析腹水产量、抗体效价和抗体产量以评估两种亚系小鼠的抗体制备效率。结果经10代选育后获得的10周龄雄性和雌性B-BALB/c小鼠体重分别比同周龄BALB/c小鼠增加了22.3%和12.8%。抗体制备过程中,B-BALB/c小鼠的耐受力比BALB/c小鼠更好,能够适应二次腹水采集;与BALB/c小鼠相比,B-BALB/c小鼠腹水产量和抗体效价均显著提高,尤以杂交瘤细胞株G23接种组更明显(均P<0.0001)。接种杂交瘤细胞株G23或Y15后,B-BALB/c小鼠的平均抗体产量(14.99×10^(4)U和33.22×10^(4)U)高于BALB/c小鼠(5.33×10^(4)U和19.31×10^(4)U)(均P<0.01)。接种杂交瘤细胞株G23后,B-BALB/c小鼠的平均单位体重的抗体产量(0.55×10^(4)U/g)高于BALB/c小鼠(0.23×10^(4)U/g)(P<0.0001)。接种杂交瘤细胞株Y15后,雌性B-BALB/c和BALB/c小鼠的单位体重抗体产量高于同亚系的雄性B-BALB/c小鼠(均P<0.01)。结论B-BALB/c小鼠在单克隆抗体体内诱导制备中可作为BALB/c小鼠的替代选择,能够达到减少实验动物使用数量、降低人力成本并提高抗体制备效率的目的。 展开更多
关键词 单克隆抗体 制备效率 杂交瘤 balb/c小鼠 Big-balb/c小鼠
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山羊源牛无浆体对Balb/c小鼠感染性研究
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作者 彭永帅 张曼 +3 位作者 张艳 菅复春 王海燕 宁长申 《动物医学进展》 北大核心 2023年第2期67-71,共5页
牛无浆体(Anaplasma bovis)隶属无浆体属(Anaplasma),可感染动物单核细胞和组织巨噬细胞,对动物生产性能影响较大。用单核细胞分离方法得到山羊源牛无浆体,并将其接种至人工饲养的Balb/c小鼠,接种时分别设置高、中、低剂量组、阴性对照... 牛无浆体(Anaplasma bovis)隶属无浆体属(Anaplasma),可感染动物单核细胞和组织巨噬细胞,对动物生产性能影响较大。用单核细胞分离方法得到山羊源牛无浆体,并将其接种至人工饲养的Balb/c小鼠,接种时分别设置高、中、低剂量组、阴性对照和空白对照。结果发现,高剂量组和中剂量组接种后3、6、9 d的血涂片检查和PCR扩增均可查到牛无浆体,9 d后转阴;低剂量组Balb/c小鼠不同时间点检查时牛无浆体均呈阴性。表明从山羊单核细胞直接分离牛无浆体可以感染Balb/c小鼠,接种9 d内可持续感染,为牛无浆体的动物感染模型的建立奠定了基础。 展开更多
关键词 牛无浆体 balb/c小鼠 人工接种 动物模型
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Helicobacter Pylori-induced Gastritis Model in BALB/c Mice Infected With Fresh Isolates from a Human Complex Ulcer Patient 被引量:1
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作者 阮国瑞 史俊华 +5 位作者 张雪萍 陈平圣 尹克铮 葛培玲 许曼华 许祥熹 《Journal of Chinese Pharmaceutical Sciences》 CAS 2002年第2期43-47,共5页
A useful helicobacter pylori-induced gastritis model using BALB/c mice was established for mimicking of human gastritis induced by Helicobacter pylori (H. pylori). The H. pylori isolates were obtained freshly from a... A useful helicobacter pylori-induced gastritis model using BALB/c mice was established for mimicking of human gastritis induced by Helicobacter pylori (H. pylori). The H. pylori isolates were obtained freshly from a human complex ulcer patient. BALB/c mice were fasted for 24 h and then 0.25 mL of 0.2 mol·L -1 NaHCO 3 was administered after by gavage to each mouse and 0.5 mL of 10 9 colonies formation unit per milliliter (CFU/mL) of H. pylori was administered 15 min. On the 3 rd day and 5 th day, the H. pylori inoculations were repeated. The inoculated mice were sacrificed in batch on the 5 th day, in the 2 nd week, 3 rd week and 4 th week. The gastric mucous membrane near pyloric portion was removed, treated and then cultured under microaerobic condition for detection of H.pylori. The remainders of the gastric membrane were fixed by 10% formaldehyde solution for pathological detection. The results showed that the H. pylori could be separated from the gastric membranes of inoculated mice. Obvious invasion of inflammatory cells in the gastric membranes of inoculated mice could be observed from pathological sections. It can be concluded that the inoculating fresh human H. pylori isolates can produce mouse gastritis. This model of BALB/c mice can be used for evaluating the therapeutic agents for the treatment of gastritis induced by H. pylori. 展开更多
关键词 Helicobacter pylori GASTRITIS balb/c mice
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17β-雌二醇抗BALB/c与C57BL/6小鼠视网膜光照损伤的比较
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作者 李红波 刘鑫宇 +5 位作者 钟华 姬佳彤 方佳妮 李炳武 尚雯婕 李晓楠 《国际眼科杂志》 CAS 北大核心 2023年第10期1609-1616,共8页
目的:通过建立BALB/c与C57BL/6小鼠视网膜光损伤模型,研究17β-雌二醇(17β-estradiol,E2)的视网膜神经保护作用,为成功构建E2抗视网膜光损伤模型提供实验数据。方法:成年雌性BALB/c、C57BL/6小鼠各40~45只,实验分组如下:正常对照组,去... 目的:通过建立BALB/c与C57BL/6小鼠视网膜光损伤模型,研究17β-雌二醇(17β-estradiol,E2)的视网膜神经保护作用,为成功构建E2抗视网膜光损伤模型提供实验数据。方法:成年雌性BALB/c、C57BL/6小鼠各40~45只,实验分组如下:正常对照组,去势手术对照组,去势光照组(小鼠去势手术14d后进行持续10000lx白光光照刺激4、8、12、16、24h组),玻璃体腔注射假手术组,生理盐水组和E2预处理组(去势手术14d后暗适应24h后分别行玻璃体腔注射2μL生理盐水或10-5 mol/L E2),每组各6只。通过石蜡切片HE染色、TUNEL染色、视网膜电图检测视网膜形态及功能变化。结果:去势光损组视网膜内核层/外核层厚度从白光10000lx光照4h组开始显著减小;玻璃体腔注射E2预处理可显著抑制两种品系小鼠视网膜各层细胞的凋亡(P<0.01)以及C57BL/6小鼠视网膜电图检测中最大混合反应a波和b波波幅的下降(P<0.05)。结论:相同光照条件对两种品系小鼠光损敏感性存在差异;E2对BALB/c小鼠无论是视网膜形态学及功能学上都产生了保护作用,而对C57BL/6小鼠功能学保护作用显著。 展开更多
关键词 视网膜光损伤模型 balb/c小鼠 c57BL/6小鼠 17Β-雌二醇
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Establishment of BALB/c Mice Model for Food Allergy to Chinese Lobsters
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作者 陈同强 刘鹏 +1 位作者 邱立明 黄菲 《Agricultural Science & Technology》 CAS 2013年第9期1291-1294,共4页
[Objective] This study aimed to establish Balb/c mice model for food allergy caused by Chinese lobsters through using intraperitoneal injection for sensitization and explore methods for in vitro identification and eva... [Objective] This study aimed to establish Balb/c mice model for food allergy caused by Chinese lobsters through using intraperitoneal injection for sensitization and explore methods for in vitro identification and evaluation of food allergy caused by Chinese lobsters. [Method] The 40 male Bal/c mice were divided into ovalbumin(OVA) positive control group, Coca's solution negative control group, blank control group and model group. Balb/c mice model was established by intraperitoneally injection of immunized Balb/c mice with OVA or Chinese lobster crude protein with aluminum hydroxide adjuvant. IgE and histamine levels in serum after the second challenge were determined by ELISA method, and the specific IgE antibody titer was determined by passive cutaneous anaphylaxis test(PCA); additionally, spleen index and histological changes in the small intestine, as well as food allergy symptoms after challenge were also calculated or observed. [Results] After the last challenge, IgE content was(236.75 ±73.39) μg/L in the Chinese lobster crude protein group, revealing no difference with that in the OVA group, but significantly higher than that in either the Coca's solution group or the blank control group(P 0.01);histamine content in serum in the Chinese lobster crude protein group was(406.55±232.79), significantly higher than that in the blank control group(P0.01). In the passive cutaneous anaphylaxis test, IgE antibody titer reached 1/16 after the last challenge in the Chinese lobster crude protein group. Spleen index in both Chinese lobster crude protein group and OVA group was significantly greater than that in either the Coca's solution group or the blank control group(P0.01). What's more, infiltration of inflammatory cells like lymphocytes and eosnophils at the lamina propria of intestinal mucosa was also observed both Chinese lobster crude protein group and OVA group. [Conclusion] This study established Balb/c mice model for food allergy caused by Chinese lobsters; serum IgE and ELISA assay and specific IgE antibody titer in PCA test can be used for the in vitro identification and evaluation of food allergies caused by Chinese lobsters. 展开更多
关键词 chinese lobsters balb/c mice Food allergies
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生晒参-甘草-桂花提取物对Balb/C小鼠运动疲劳抗性的影响 被引量:3
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作者 汪洪 方昊 +1 位作者 冯纬 张蕾 《食品工业科技》 CAS 北大核心 2023年第5期356-362,共7页
通过动物实验研究生晒参-甘草-桂花混合提取物对Balb/C小鼠的抗疲劳作用,并初步探讨其抗疲劳机制。本实验将160只Balb/C小鼠随机分为4组:空白组和提取物低、中、高(30、150、300)mg·L-1剂量组。生晒参-甘草-桂花混合后经热水回流... 通过动物实验研究生晒参-甘草-桂花混合提取物对Balb/C小鼠的抗疲劳作用,并初步探讨其抗疲劳机制。本实验将160只Balb/C小鼠随机分为4组:空白组和提取物低、中、高(30、150、300)mg·L-1剂量组。生晒参-甘草-桂花混合后经热水回流工艺提取、过滤和浓缩后,按比例配制为灌胃材料。4组实验小鼠经过环境适应后开始灌胃实验,每日一次,每次2 mL,为期28 d,每周记录各组小鼠体重,并在最后一次灌胃结束后,采用负重游泳实验、常压耐缺氧实验和生化法检测小鼠的肝糖原含量、血尿素氮、血乳酸含量变化及T-SOD活力和MDA含量等指标。结果表明,给药组小鼠游泳前后血乳酸比空白组下降明显;血尿素氮含量增幅与空白组比较明显降低,部分剂量组别具有显著性差异;给药组小鼠血清T-SOD活力(218.71±8.14、217.21±7.82、204.33±7.78 U·mL^(-1))和肝糖原水平(11.75±1.02、12.03±1.21、11.84±0.67 mg/g)显著高于空白组(121.18±17.58 U·mL^(-1)、7.91±0.89 mg/g);给药组小鼠血清MDA含量(11.24±1.18、13.62±0.65、15.25±0.91 nmol·mL^(-1))显著低于空白组(21.18±1.62 nmol·mL^(-1));给药过后可显著延长小鼠负重游泳时间和常压缺氧条件下小鼠存活时间。综上说明生晒参甘草桂花提取物具有明显的抗疲劳作用,其作用机理可能与富含皂苷、黄酮和多糖,调节小鼠肝糖原含量、提高小鼠体内清除氧自由基水平有关。 展开更多
关键词 生晒参甘草桂花提取物 balb/c小鼠 抗疲劳作用 负重游泳实验
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青天葵总黄酮对人鼻咽癌CNE-2荷瘤裸鼠皮下肿瘤的抑制作用 被引量:1
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作者 秦晓辉 刘智强 +4 位作者 刘俊阳 黄春想 王可盈 宋家乐 周燕园 《陕西中医》 CAS 2024年第5期593-599,共7页
目的:研究青天葵总黄酮(TFNF)对BALB/c裸鼠人鼻咽癌细胞皮下种植模型中TGF-β1/Erk/MAPK通路的调控作用。方法:BALB/c裸鼠皮下接种CNE-2细胞(1.0×107细胞/ml)建立鼻咽癌荷瘤模型,苏木精-伊红染色(HE)行病理判断,免疫组化法(IHC)观... 目的:研究青天葵总黄酮(TFNF)对BALB/c裸鼠人鼻咽癌细胞皮下种植模型中TGF-β1/Erk/MAPK通路的调控作用。方法:BALB/c裸鼠皮下接种CNE-2细胞(1.0×107细胞/ml)建立鼻咽癌荷瘤模型,苏木精-伊红染色(HE)行病理判断,免疫组化法(IHC)观察细胞周期调节蛋白-67(Ki67)、增殖细胞核抗原(PCNA)的表达水平。免疫印迹法检测转化生长因子-β1(TGF-β1)、细胞外调节蛋白激酶(Erk)、p-Erk、丝裂原活化蛋白激酶(MAPK)、p-MAPK的蛋白表达水平。试剂盒法评估肾脏、肝脏、脾脏中超氧化物歧化酶(SOD)及丙二醛(MDA)水平。结果:与模型组比较,高剂量TFNF显著抑制荷瘤小鼠肿瘤体积与质量,显著降低Ki67(55.19%)、PCNA(46.65%)表达水平,提高肾脏、肝脏、脾脏中SOD水平至3.88、2.98、3.71U/mgprot,降低肾脏、肝脏、脾脏的MDA水平至2.19、1.05、2.85nmol/mgprot。TFNF可降低肿瘤组织中TGF-β1(47.36%)、p-Erk/Erk(81.13%)、p-MAPK/MAPK(19.80%)的蛋白表达水平。结论:TFNF可调控TGF-β1/Erk/MAPK通路抑制肿瘤生长,并减轻荷瘤裸鼠主要脏器的氧化损伤发生。 展开更多
关键词 鼻咽癌 青天葵总黄酮 TGF-β1/Erk/MAPK信号通路 cNE-2细胞 balb/c裸鼠 氧化损伤
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不同比例TNBS诱导Balb/c小鼠克罗恩病模型的建立及评价
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作者 陈泽鸿 余深翼 +1 位作者 陈小鹰 曾晓萍 《海峡药学》 2023年第7期9-13,共5页
目的不同三硝基苯磺酸(2,4,6-trinitrobenzenesulfonic acid,TNBS)比例诱导Balb/c小鼠克罗恩病(Crohn disease,CD)模型的建立及评价。方法以完全随机区组化的方法将32只Balb/c小鼠分为4组,按水∶无水乙醇∶TNBS比值分为模型1组(2∶5∶3... 目的不同三硝基苯磺酸(2,4,6-trinitrobenzenesulfonic acid,TNBS)比例诱导Balb/c小鼠克罗恩病(Crohn disease,CD)模型的建立及评价。方法以完全随机区组化的方法将32只Balb/c小鼠分为4组,按水∶无水乙醇∶TNBS比值分为模型1组(2∶5∶3)、模型2组(1∶5∶4)及模型3组(0∶5∶5),每组8只。另8只健康小鼠作为对照组,以小鼠一般情况、体质量变化、结肠长度变化、粪便性状、结肠组织病理学评分等为指标评价不同比例TNBS诱导的小鼠CD模型进展并计算小鼠生存率。于建模后第7天取材进行结肠组织病理学检查及组织病理评分,取小鼠血清检测炎性细胞因子IL-6水平,同时测量小鼠结肠长度。结果模型3组小鼠生存率低,整个实验周期体质量持续下降,建模第3天即出现严重腹泻、便血等症状,7天后结肠长度显著缩短(P<0.001),组织损伤严重,组织病理学评分及IL-6水平均显著升高(P<0.001);模型1组小鼠第3天情况与模型3组相似,体质量在第3、4天显著下降(P<0.05)后有所回升,第7天镜下检查结肠组织损伤及炎症情况轻,结肠长度并无显著缩短;模型2组小鼠体质量、结肠长度及IL-6水平变化情况与模型3组相似,炎性细胞浸润及结肠局部损伤有大量炎性细胞浸润。结论模型2组(体积比1∶5∶4)小鼠生存率高,炎症轻重程度适中,病理变化情况稳定,是一种CD研究较好的模型制备方法。 展开更多
关键词 balb/c小鼠 克罗恩病 2 4 6-三硝基苯磺酸
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Molecular Cloning of a Novel cDNA From Mus Muscular BALB/c Mice Encoding Glycosyl Hydrolase Family 1: A Homolog of Human Lactase-Phlorizin Hydrolase 被引量:3
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作者 WEI HE ZHEN-YU JI CHENG-YU HUANG 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2006年第5期340-345,共6页
Objective To study the mechanism of lactose intolerance (LI) by cloning the mouse lactase cDNA and recombining a vector. Methods Total murine RNA was isolated from the small intestine of a 4-week-old BALB/c mouse ... Objective To study the mechanism of lactose intolerance (LI) by cloning the mouse lactase cDNA and recombining a vector. Methods Total murine RNA was isolated from the small intestine of a 4-week-old BALB/c mouse (δ). Crene-specific primers were designed and synthesized according to the cDNA sequences of lactase-phlorizin hydrolase (LPH) in human, rat, and rabbit. A coding sequence (CDS) fragment was obtained using RT-PCR, and inserted into a clone vector pNEB-193, then the cDNA was sequenced and analyzed using bioinformatics. Results The cDNA from the BALB/c mouse with 912 bp encoding 303 amino acid residues. Analysis of the deduced amino acid sequence using bioinforrnatics revealed that this cDNA shared extensive sequence homology with human LPH containing a conserved glycosyl hydrolase family 1 motif important for regulating lactase intolerance. Conclusion BALB/c mouse LPH cDNA (GenBank accession No: AY751548) provides a necessary foundation for study of the biological function and regulatory mechanism of the lactose intolerance in mice. 展开更多
关键词 balb/c mice LPH cDNA pNEB 193 cloning Sequence
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Study of primary leiomyosarcoma induced by MNNG in BALB/C nude mice 被引量:2
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作者 Zhu JS Su Q +2 位作者 Zhou JG Hu PL Xu JH 《World Journal of Gastroenterology》 SCIE CAS CSCD 2000年第1期128-130,共3页
INTRODUCTIONIt has been well known that MNNG is one of thestrong and multipotential carcinogens that havebeen frequently reported inducing malignant peptictumors.We have successfully induced rat and doggastric adenoca... INTRODUCTIONIt has been well known that MNNG is one of thestrong and multipotential carcinogens that havebeen frequently reported inducing malignant peptictumors.We have successfully induced rat and doggastric adenocarcinomas,squamous cell carcinomasof rat forestomach and gastric leiomyosarcoma 展开更多
关键词 Subject headings LEIOMYOSARcOMA STOMAcH NEOPLASMS MNNG balb/c NUDE mice
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Immunotoxicological Evaluation of Wheat Genetically Modified with TaDREB4 Gene on BALB/c Mice 被引量:3
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作者 LIANG Chun Lai ZHANG Xiao Peng +1 位作者 SONG Yan JIA Xu Dong 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2013年第8期663-670,共8页
Objective To evaluate the immunotoxicological effects of genetically modified wheat with TaDREB4 gene in female BALB/c mice. Methods Female mice weighing 18-22 g were divided into five groups (10 mice/group), which ... Objective To evaluate the immunotoxicological effects of genetically modified wheat with TaDREB4 gene in female BALB/c mice. Methods Female mice weighing 18-22 g were divided into five groups (10 mice/group), which were set as negative control group, common wheat group, parental wheat group, genetically modified wheat group and cyclophosphamide positive control group, respectively. Mice in negative control group and positive control group were fed with AIN93G diet, mice in common wheat group, non-genetically modified parental wheat group and genetically modified wheat group were fed with feedstuffs added corresponding wheat (the proportion is 76%} for 30 days, then body weight, absolute and relative weight of spleen and thymus, white blood cell count, histological examination of immune organ, peripheral blood lymphocytes phenotyping, serum cytokine, serum immunoglobulin, antibody plaque-forming cell, serum half hemolysis value, mitogen-induced splenocyte proliferation, delayed-type hypersensitivity reaction and phagocytic activities of phagocytes were detected. Results No immunotoxicological effects related to the consumption of the genetically modified wheat were observed in BALB/c mice when compared with parental wheat group, common wheat group and negative control group. Conclusion From the immunotoxicological point of view, results from this study demonstrate that genetically modified wheat with TaDREB4 gene is as safe as the parental wheat. 展开更多
关键词 Genetically modified wheat Immunotoxicological effects balb/c mice
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