目的 研究白藜芦醇通过抑制T样受体4/核因子-κB(TLR4/NF-κB)通路对呼吸道合胞病毒(RSV)毛细支气管炎小鼠的保护作用。方法 选取30只小鼠随机分为对照组、RSV组、给药组,建立RSV毛细支气管炎小鼠模型,检测小鼠肺组织中TLR4、NF-κB的变化;利用肺组织HE染色、ELISA法检测白藜芦醇给药前后气道炎症病变、IL-6、TNF-α因子水平,Western Blot法及实时定量PCR法检测TLR4、 NF-κB蛋白及基因表达等相关变化。结果 与对照组相比,RSV组小鼠组肺组织中TLR4、NF-κB水平升高,肺组织切片HE染色显示气道炎症细胞浸润加剧,ELISA检测炎性因子IL-6、TNF-α升高;而给药组处理后,肺组织TLR4、NF-κB的表达下调,病理改变减轻,炎性因子IL-6、TNF-α下降。结论 白藜芦醇可通过抑制TLR4/NF-κB通路抑制炎性因子的释放,从而减轻毛细支气管炎小鼠的气道炎症反应。

Objective To study the protective effect of resveratrol on lung tissue of respiratory syncytial virus(RSV) bronchiolitis mice by regulating TLR4/NF-κB pathway. Methods Thirty mice were randomly divided into control group, RSV group and resveratrol group. The mice models of RSV bronchiolitis were established, and the changes of TLR4 and NF-κB levels in lung tissues of mice were detected. HE staining and ELISA were used to detect airway inflammation, IL-6 and TNF-α levels before and after resveratrol administration. TLR4 and NF-κB protein and gene expressions were detected by Western Blot and real-time quantitative PCR. Results Compared with the control group, the levels of TLR4 and NF-κB in the lung tissues of mice with bronchiolitis were significantly increased. Airway inflammatory cell infiltration was aggravated in HE staining of lung tissue sections, and inflammatory factors IL-6 and TNF-α were significantly increased showing by ELISA. The expressions of TLR4 and NF-κB in resveratrol group were down-regulated after treatment. Conclusions Resveratrol can inhibit the release of inflammatory factors by inhibiting the TLR4/NF-κB pathway, play a protective role in mice with bronchiolitis.

目的 从炎症反应和肠道屏障两个方面探究五味苦参肠溶胶囊对葡聚糖硫酸钠（DSS）诱导的小鼠结肠炎的治疗作用。方法 6~8周龄雄性BALB/c小鼠被随机分为3组,分别为正常组、急性肠炎模型组和五味苦参组。急性肠炎模型组和五味苦参组小鼠予含有3% DSS的饮用水1周诱导急性结肠炎,其后急性肠炎模型组予PBS灌肠,五味苦参组予五味苦参肠溶胶囊制备为灌肠液灌肠。每天称量小鼠体质量,观察大便性状及血便情况,第8天处死小鼠,取结肠组织检测炎症细胞因子和肠屏障因子。结果 与正常组相比,急性肠炎模型组肠道炎症明显,五味苦参组有效缓解肠道炎症和有利于肠上皮屏障修复。表现为五味苦参灌肠液有效缓解小鼠体质量下降,具有较低的DAI评分,有较好的组织学表现,其结肠组织IL-1β,IL-6和TNF-α的相对表达下降,Occludin和ZO-1的相对表达增加（P<0.05）。结论 五味苦参肠溶胶囊制备的灌肠液可减轻DSS诱导的小鼠急性结肠炎。

Objective To explore the therapeutic effect of five-flavor sophora flavescens enteric-coated capsules（FSEC）on dextran sulphate sodium（DSS）-induced colitis in mice from inflammatory response and intestinal barrier．Methods Male BALB/c mice aged 6-8 weeks were randomly divided into three groups,namely normal group,acute colitis group and FSEC group．The mice in acute colitis group and FSEC group were given drinking water containing 3% DSS for one week to induce acute colitis,and then they were given PBS enema or FSEC enema respectively．The mice were administered daily,including weight loss,the stool properties and bloody feces．The mice were sacrificed on the 8th day,and the colon tissue was collected to detect inflammatory cytokines and intestinal barrier cytokines．Results Compared with the normal group,the intestinal inflammation in the acute colitis group was obvious,however the FSEC effectively relieved intestinal inflammation and facilitated the intestinal epithelial barrier repair．It showed that FSEC enema effectively relieved weight loss and had a lower disease activity index score．In addition,FSEC enema group had better histological appearance．Compared to acute colitis group,the relative expression of IL-1β,IL-6 and TNF-α in colon tissue decreased,and the relative expression of Occludin and ZO-1 significantly increased in FSEC group（P<0.05）．Conclusions FSEC enema can alleviate DSS-induced acute colitis in mice．

目的 丹酚酸B是传统中药丹参的重要生物活性组分,临床应用广泛。新近发现,丹酚酸B具有防治骨质疏松的作用。本研究拟在前期工作基础上,系统地研究丹酚酸B对去卵巢骨质疏松小鼠的作用,探讨其对小鼠间充质干细胞（MSCs）成骨分化的影响。方法 将18只8周龄SPF级别的C57雌性小鼠分为假手术组、骨质疏松组、丹酚酸B治疗组。骨质疏松组和丹酚酸B治疗组行双侧卵巢摘除术。而假手术组则保持正常的卵巢结构,同时去除局部的脂肪。3组均于术后3日内给予抗生素进行抗感染治疗。4周内,丹酚酸B治疗组给予丹酚酸B 2.5 mg/kg腹腔注射,连续12周,2天1次,其余2组在相同的时间内给予等量生理盐水。16周后,在麻醉状态下将所有小鼠处死。应用MicroCT测量了小鼠右后股骨的骨密度。采用qRT-PCR技术,分析小鼠左后股骨骨髓MSCs中Runx2和Osterix的表达。将小鼠右后股骨进行液氮研磨处理,提取蛋白质,用WB法测定OPG和RANKL的含量。结果 骨质疏松组小鼠股骨骨密度比假手术组低（P<0.05）,丹酚酸B治疗组小鼠股骨骨密度比骨质疏松组高,但差异无显著性意义（P<0.05）。骨质疏松组小鼠Runx2和Osterix水平低于假手术组（P<0.05）,丹酚酸B治疗组小鼠Runx2和Osterix水平比骨质疏松组高（P<0.05）。骨质疏松组小鼠OPG和RANKL蛋白水平低于假手术组（P<0.05）,丹酚酸B组小鼠OPG和RANKL蛋白水平比骨质疏松组高（P<0.05）。结论 绝经后骨质疏松症早期对小鼠的骨质疏松具有一定的影响,但还需要更多的实验来验证本研究的结论。

Objective Salvianolic acid B is an important bioactive component of traditional Chinese medicine Salvia miltiorrhiza and is widely used in clinic．Recently,salvianolic acid B has been found to have the effect of preventing osteoporosis．On the basis of previous work,this study intends to systematically explore the effect of salvianolic acid B on ovariectomized mice with osteoporosis,and its effect on the osteogenic differentiation of mouse mesenchymal stem cells（MSCs）．Methods Eighteen eight-week-old SPF C57 female mice were divided into sham operation group,osteoporosis group and salvianolic acid B treatment group（6 mice in each group）．The osteoporosis group and salvianolic acid B group underwent bilateral ovariectomy．The sham group maintained normal ovarian structure while removing local fat tissue．All three groups were given antibiotics for anti-infection treatment within 3 days after operation．Within 4 weeks,salvianolic acid B treatment group was given salvianolic acid B 2.5 mg/kg intraperitoneal injection for 12 weeks,once every 2 days,and the other 2 groups were given the same amount of saline at the same time．After 16 weeks,all mice were sacrificed under anesthesia．The bone density of the mouse right posterior femur was measured by MicroCT．The expressions of Runx2 and Osterix in the bone marrow of mouse left posterior femur were analyzed by qRT-PCR．The right posterior femur of mice was ground with liquid nitrogen to extract protein,and the contents of OPG and RANKL were determined by WB．Results The bone mineral density of the femur in the osteoporosis group was lower than that in the sham operation group（P<0.05）,and the bone mineral density of the femur in the salvianolic acid B treatment group was higher than that in the osteoporosis group,but the difference was not significant（P<0.05）．The levels of Runx2 and Osterix in the osteoporosis group were significantly lower than those in the sham operation group（P<0.05）,and the levels of Runx2 and Osterix in the salvianolic acid B treatment group were higher than those in the osteoporosis group（P<0.05）．The levels of OPG and RANKL protein in the osteoporosis group were significantly lower than those in the sham operation group（P<0.05）,while the levels of OPG and RANKL protein in the salvianolic acid B group were higher than those in the osteoporosis group（P<0.05）．Conclusions The early stage of postmenopausal osteoporosis has certain effects on osteoporosis in mice,but more experiments are needed to verify the conclusions of this study．

目的 探究血清外泌体对小鼠烫伤伤口愈合的促进作用及机制。方法 选取我院60只NIH小鼠作为研究对象,对其血清中的外泌体进行提取和分离,建立起皮肤烫伤模型。采用血清外泌体进行治疗,评估治疗的效果,观察皮肤组织的病理变化,检测小鼠成纤维细胞增殖和表皮HaCat细胞迁移使用血清外泌体受到的影响。结果 空白对照组和血清外泌体小鼠烫伤创口愈合时间比较,差异有统计学意义(P＜0.05);血清外泌体作用24 h后,不同剂量OD值差异有统计学意义(P＜0.05);10 μL Exo组和PBS组内部不同时间点OD值差异均有统计学意义(P＜0.05);外泌体组和PBS组24 h的HaCat细胞迁移率相比较,差异有统计学意义(P＜0.05)。结论 血清外泌体可以促进小鼠烫伤伤口的愈合,对成纤维细胞的增殖和表皮HaCat细胞的迁移作用也比较显著,可能成为临床治疗烫伤的新手段。

目的 探讨高压氧对FVB小鼠旷场行为的影响。方法 对9只4周龄高压氧组FVB小鼠进行2个疗程共21天高压氧干预;对13只4周龄对照组FVB小鼠不做任何处理,正常饲养。21天后对2组小鼠进行旷场实验,观察高压氧对FVB小鼠旷场行为的影响。结果 高压氧组小鼠在中央区停留时间(3.73±3.69,17.97±6.82,t=-5.564,P=0.000)和运动路程较对照组小鼠减少(189.65±199.32,525.67±244.22,t=-3.298,P=0.040),在外周区停留时间增加(296.07±3.69,281.79±6.79,t=5.597,P=0.000);进入中央区、外周区次数及穿越各区总次数都减少(3.11±3.10,8.20±4.80, t=-2.770,P=0.014;3.11±3.10,9.10±4.79,t=-3.264,P=0.005;6.22±6.20,17.30±9.59,t=-3.018,P=0.008);2组小鼠总路程和平均速度无差异(8766.57±3362.90,8320.47±1692.47, t=0.359,P=0.726;73.05±28.02,69.34±14.10,t=0.359,P=0.726)。结论 高压氧改变FVB小鼠的旷场行为的表型,使小鼠趋避性增加,对环境的认知能力及焦虑程度增强,探索性下降。

Objective To explore the effect of hyperbaric oxygenation(HBO)on behaviors of FVB mice in the open field test. Methods 9 mice of four-week-old in the HBO group were treated with hyperbaric oxygenation for a total of 21 days during two courses while 13 control mice of four-week-old did not do any treatment. After 21-day normal breeding, the mice of two groups were tested with open field test. Then, researchers observed the effect of hyperbaric oxygenation on mice behaviors after open field test. Results Compared to 13 control mice, residence time (3.73±3.69,17.97±6.82,t=-5.564,P=0.000) and the range of movement (189.65±199.32,525.67±244.22,t=-3.298,P=0.040)in central region decreased while the residence time in external region increased (296.07±3.69,281.79±6.79,t=5.597,P=0.000). The times of entering the central region and external region and crossing both of the regions decreased (3.11±3.10,8.20±4.80, t=-2.770,P=0.014;3.11±3.10,9.10±4.79,t=-3.264,P=0.005;6.22±6.20,17.30±9.59,t=-3.018,P=0.008). There was no difference in the total range of movement and the average velocity (8766.57±3362.90,8320.47±1692.47, t=0.359,P=0.726;73.05±28.02,69.34±14.10,t=0.359,P=0.726). Conclusion Hyperbaric oxygenation may change the behaviors of FVB mice in open field test to enhance its phobotaxis, anxiety degree and the cognitive ability in environment and inhibiting its exploration ability.

目的 对不同周龄的KO小鼠与WT小鼠进行悬尾实验进行观察,探讨KO小鼠与WT小鼠的行为差别。方法 采用健康的试验动物180只分两组:①KO组(4、6、8周龄,各周龄30只,雌雄各半,共90只)②WT组(4、6、8周龄,各周龄30只,雌雄各半,共90只);通过悬尾实验观察性别,年龄对不动时间的影响。结果 同龄KO雌性小鼠比雄性小鼠的静止时间差别不大;随着年龄增大,静止时间增长。 同龄同性别的KO鼠比WT鼠的不动时间长。P<0.05;同龄雄性小鼠比雌性小鼠的不动时间短; 随年龄增长各种系小鼠不动时间增长,KO鼠的不动时间比WT鼠长,P<0.05。结论 KO小鼠存在抑郁行为表型。

Objective To observe tail suspension test in Fmr1 gene knockout mice and to explore whether there are differences in mobility of KO and WT mice. Methods 180 test mice were divided into two groups: ① KO group (4,6,8 weeks old, each age group of mice is 30, male and female in half, a total of 90) ② WT group (4,6, 8 weeks old, each group of mice is 30, male and female on half, a total of 90). Through forced swimming test and tail suspension test to observe gender, age effect on immobility time. Results With the same age of the same sex,the KO mice's immobility time was longer than WT mice's. P<0.05. With the same age,the male mice's immobility time was shorter than female mice's. With the age increase, the immobility time of KO mice was longer than WT mice. P<0.05. Conclusion Fmr1 gene knockout mice have anxiety and depressive behavior.

目的 观察并评估内毒素性急性肺损伤大鼠吸入一氧化氮后外周血中内皮祖细胞和炎症介质的变化情况。方法 90只SPF级健康大鼠分为3组,A组为正常对照组(n=30),B组为急性肺损伤组(ALI)(n=30), C组为一氧化氮(NO)组(n=30)。分别计算各组外周血内皮祖细胞(Endothelial progenitor cells,EPCs) 数量,同时监测肺组织中白细胞介素-10(Interleukin-10,IL-10)水平和髓过氧化物酶(Myeloperoxidase,MPO)活性。结果 我们成功建立了大鼠的ALI肺损伤模型, C组EPCs数量、MPO活性上升幅度均小于B组、而IL-10上升水平均高于B组,差异有统计学意义(P<0.05)。结论 大鼠吸入一氧化氮可减轻内毒素所致急性肺损伤程度,其机制可能与外周血中内皮祖细胞数量及MPO水平下降和IL-10水平上升有关。

Objective To investigate the effect of nitric oxide(NO) inhalation in endotoxin-induced acute lung injury mice. Methods Ninety SPF mice were randomly assigned to the normal group(group A), ALI group(group B)and ALI+NO group(group C). The number of endothelial progenitor cells was counted and the level of Interleukin-10(IL-10) and myeloperoxidase (MPO) were measured. Results Endotoxin administration resulted in pulmonary edema. The pulmonedema was lightened and the level of MPO were decreased by the inhalation of nitric oxide while the level of IL-10 increased. Conclusion NO inhalation can mitigate acute lung injure. The decline of EPCs and MPO and the increase of IL-10 may be one of the mechanism.

       目的   探讨复方黄芪颗粒（CHG）的抗疲劳作用及其机制。方法  48只雄性BALB/C小鼠随机分为空白对照组、低剂量（9.1 g/kg）、中剂量（18.2 g/kg）、高剂量（27.3 g/kg）CHG 3个试验组，每组12只。试验组给予不同剂量的复方黄芪颗粒溶液灌胃，空白对照组小鼠给予等体积生理盐水。给药30 d后，检测小鼠体内相关指标变化，观察其抗疲劳作用并分析相关机制。结果   与空白对照组相比，试验组小鼠体质量差异无统计学意义（P＞0.05），小鼠力竭游泳时间及转棒耐力时间均明显延长（P＜0.01），血尿素氮（BUN）、乳酸脱氢酶（LDH）、丙二醛（MDA）水平明显降低（P＜0.01），肝糖原和肌糖原水平升高（P＜0.05），超氧化物歧化酶（SOD）活性升高（P＜0.01）。体外抗氧化试验表明CHG以剂量依赖性方式清除2，2-联氮-二（3-乙基-苯并噻唑-6-磺酸）二铵盐（ABTS）和1，1-二苯基-2-三硝基苯肼（DPPH）自由基。当CHG质量浓度为100.000 0 mg/mL时，CHG对DPPH自由基清除能力可达85.030 3%。当CHG质量浓度为25.000 0 mg/mL时，CHG对ABTS自由基清除能力可达96.357 2%。结论  CHG具有抗疲劳的作用，其作用机制可能与抗氧化作用相关。

      Objective  To investigate the anti-fatigue effects of compound Huangqi granules（CHG）and its mechanism．Methods  Forty-eight male BALB/C mice were randomly divided into blank control group，9.1，18.2，27.3 g/kg CHG group（test groups）．The test groups received different concentrations of CHG solution by gavage，and the blank control group mice were given equal volume saline．After 30 days of administration，the mice were tested，meanwhile the anti-fatigue effect and mechanism were investigated．Results  Compared with blank control group，there was no significant difference in body weight（P＞0.05）．The exhaustive swimming time and rod turning endurance time of mice were significantly prolonged（P＜0.01）．The serum levels of blood urea nitrogen，lactate dehydrogenase and malondialdehyde were significantly decreased（P＜0.01），while the liver and muscle glycogen levels（P＜0.05）and superoxide dismutase activity were increased（P＜0.01）．In vitro antioxidant tests showed that CHG can remove （1，1-Diphenyl-2-picrylhydrazyl，ABTS） and （2，2’-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid，DPPH） free radicals in a dose-dependent manner．When the CHG concentration is 100 mg/mL，the DPPH free  radical scavenging ability of CHG can reach 85.030 3%．When the CHG concentration was 25 mg/mL，the scavenging ability of CHG to ABTS free radicals reached 96.357 2%．Conclusions  CHG has anti-fatigue effect，and its mechanism may be related to anti-oxidation effect．