高迁移率族蛋白-1在急性胰腺炎中的表达及意义

目的 观察急性胰腺炎大鼠高迁移率族蛋白-1(HMGBl)表达水平的变化,探讨其在急性胰腺炎发病过程中的作用和意义.方法 分别以2%及3.8%的牛磺胆酸钠逆行注入大鼠胰胆管,制作大鼠轻型和重症急性胰腺炎模型.将84只大鼠随机分成3组:假手术组(SO组n=28),轻型胰腺炎组(MAP组n=28),重症胰腺炎组(SAP组n=28).对胰腺损伤进行病理评分,免疫组织化学方法观察胰腺中HMGB1的表达情况,ELISA法测定血清中HMGB1水平.结果 MAP和SAP组胰腺组织HMGB1的表达在建模后12h明显升高,于24h达高峰,至48h明显下降,各时段胰腺组织HMGB1的表达与SO组比较差异具有显著统计学意义(P＜0.05).建模后12、24、48、72 h SAP组胰腺HMGBl免疫组化IOD均值明显高于MAP组(P＜0.05),胰腺HMGBl表达程度与胰腺病理损伤程度呈正相关.MAP和SAP组大鼠的血清HMGB1水平在建模后12h明显升高,于48h达高峰,至72h明显下降,各时段的血清HMGB1水平与SO组比较差异具有显著统计学意义(P＜0.05).SAP组的血清HMGB1水平于建模后24、48、72 h明显高于MAP组(P＜0.05),血清HMGB1水平与胰腺病理损伤程度呈正相关.结论 HMGB1可能作为晚期炎症介质参与了胰腺炎的局部及全身炎症反应,并可作为评价胰腺炎病变和炎症反应程度的有效指标.     

ORP150在重症急性胰腺炎大鼠胰腺中表达变化的研究

目的探讨氧调节蛋白150(ORP150)在重症急性胰腺炎(SAP)大鼠胰腺损伤中的表达变化。方法将40只雄性Wistar大鼠随机分为:假手术组(SO组,10只)、SAP组(30只,其中SAP 3、6及12h3个时相各10只)。SO组开腹后仅翻动胰腺则关腹,SAP组则经胆胰管逆行注射5%牛磺胆酸钠制备SAP模型;测定SO组术后12h和SAP组造模后3、6及12h的腹水量、血清淀粉酶(AMY)及谷氨酸氨基转移酶(ALT)水平;于光镜下进行胰腺组织病理学评分;用RT-PCR法检测胰腺组织中ORP150mRNA的表达。结果 SAP组各时相腹水量,AMY及ALT水平和胰腺病理评分均明显高于SO组(P<0.05)。SAP组腹水量在造模后3h和6h之间差异无统计学意义(P>0.05),而12h较前2个时相均明显增高(P<0.05)。SAP组的AMY及ALT水平和胰腺组织病理学评分在造模后各时相两两间比较差异均有统计学意义(P<0.05)。ORP150mRNA在SO组呈低表达,在SAP组造模后各时相的表达强度均较SO组增强,其中造模后3h表达强度最高,6h和12h依次降低。结论 ORP150mRNA在SAP胰腺组织中呈高表达,提示ORP150可能在SAP胰腺损伤的发生、发展过程中起着一定的作用。     

栗精胺对重症急性胰腺炎大鼠肾脏损伤保护作用的研究

目的探讨栗精胺(CS)对重症急性胰腺炎(SAP)大鼠肾损伤的保护作用及其可能的分子机理。方法将24只SPF级成年雄性SD大鼠随机分为假手术组(SO组)、SAP组和CS组,每组8只大鼠。采用逆行胰胆管注射5%牛磺胆酸钠溶液(1 mL/kg)的方法建立大鼠SAP肾损伤模型。CS组大鼠在SAP建模后立即经腹腔注射CS生理盐水溶液(200 mg/kg)。SO组大鼠开腹后仅翻动十二指肠及胰腺后关腹。建模后12 h处死大鼠,采集3组大鼠的血清、胰腺及肾脏组织标本。采用全自动多功能生化分析仪检测大鼠血清中的尿素氮(BUN)水平、肌酐(Cr)水平及淀粉酶(AMY)活性;采用HE染色并在光镜下观察大鼠胰腺及肾脏组织的病理学改变;采用免疫组织化学染色法检测3组大鼠肾脏组织中核因子-κB(NF-κB)、肿瘤坏死因子-α(TNF-α)、细胞间黏附分子-1(ICAM-1)及含半胱氨酸的天冬氨酸蛋白水解酶-3(Caspase-3)蛋白的表达。结果 (1)在胰腺及肾脏病理损伤程度方面,SAP组大鼠较SO组严重,但CS组大鼠却较SAP组有所减轻。(2)与SO组比较,SAP组大鼠的血清Cr水平、BUN水平及AMY活性均较高(P0.05);与SAP组比较,CS组大鼠的血清Cr水平、BUN水平及AMY活性均较低(P0.05)。(3)与SO组比较,SAP组大鼠肾脏组织中NF-κB、TNF-α、ICAM-1及Caspase-3蛋白的积分光密度值(IOD值)均较高(P0.05);与SAP组比较,CS组大鼠肾脏组织中NF-κB、TNF-α、ICAM-1及Caspase-3蛋白的IOD值均较低(P0.05)。结论 CS可减轻SAP大鼠的急性肾损伤,其机制可能是通过抑制NF-κB的活化,下调下游炎性介质如TNF-α和ICAM-1蛋白的表达,以及抑制凋亡蛋白Caspase-3的表达来发挥保护作用的。     

白细胞介素10对重症急性胰腺炎大鼠肾功能的保护作用

目的探讨白细胞介素10(IL-10)对重症急性胰腺炎(SAP)大鼠肾功能障碍的保护作用。方法将SD大鼠54只随机分为3组,假手术组(SO)、SAP组、SAP加IL-10治疗组(SAP IL- 10),以5%牛磺脱氧胆酸钠逆行胰胆管注射建立SAP模型,观察各组术后12、24 h血清淀粉酶,肿瘤坏死因子α(TNF-a)、1L-6、尿素氮(BUN)、肌酐(Cr)水平,以及腹水量、胰腺和肾脏的病理改变,逆转录-聚合酶链反应(RT-PCR)分析肾脏细胞间黏附分子1(ICAM一1)mRNA表达水平。结果SAP组制模后血清TNF-α、IL-6水平明显上升,肾脏ICAM-1 mRNA表达上调(P<0.01),BUN、Cr在12、24 h持续升高。与SAP组比较,SAP IL-10组血清TNF-α、IL-6、BUN、Cr水平明显下降,ICAM-1 mRNA表达下调(P<0.01),肾脏病理改变得到改善。结论IL-10可抑制TNF-α、IL-6血清水平,下调肾脏ICAM-1基因表达,改善SAP肾功能障碍。     

褪黑素对重症急性胰腺炎的保护作用

目的 探讨褪黑素(melatonin,MT)对重症急性胰腺炎(severe acute pancreatitis,SAP)大鼠胰腺组织中Smac/DIABLO、XIAP mRNA表达的影响及可能机制.方法 54只SD大鼠随机分成假手术(SO)组、重症急性胰腺炎(SAP)组以及MT干预SAP(MS)组,每组18只.通过胰胆管逆行注射3.5%脱氧胆酸钠方法 制备大鼠SAP模型,MS组制造模型前30 min腹腔注射MT.收集各模型组3 h、6 h、12 h标本,观察胰腺组织,检测胰腺组织细胞凋亡.实时定量(real-time)PCR分析胰腺组织中Smac/DIABLO、XIAP mRNA的表达.结果 SAP组和MS组胰腺组织损伤较SO组严重.与SAP组相比,在3 h、6 h、12 h各时点MS组胰腺病理损伤明显减轻,细胞凋亡指数下降(P<0.05),胰腺组织中Smac/DIABLO mRNA表达下调(P<0.05),XIAP mRNA表达上调(P<0.05).结论 MT能明显改善SAP胰腺组织损伤,对急性胰腺炎有保护作用;这可能与调节Smac/DIABLO、XIAPmRNA的表达有关.     

骨髓间充质干细胞对重症急性胰腺炎大鼠肾损害干预的研究

目的 探讨骨髓间充质干细胞对重症急性胰腺炎(SAP)大鼠肾损害的干预效果及机制.方法 将鉴定过的骨髓间充质干细胞注射到SAP大鼠体内,观察血清淀粉酶、肌酐、尿素氮及肿瘤坏死因子(TNF)-α、白细胞介素(IL)-1变化;透射电镜下观察肾脏间质毛细血管超微结构变化;免疫组织化学对肾脏AQP1定位;荧光定量聚合酶链反应(FQ-PCR)检测肾脏水通道蛋白1(AQP1) mRNA变化,Western blot检测肾脏AQP1蛋白变化.结果 (1)培养的细胞经流式细胞术检测,CD29阳性细胞率为99.30％,CD90阳性细胞率为93.50％,CD34阳性细胞率为0.82％,CD45阳性细胞率为2.22％;(2)间充质干细胞干预后,SAP大鼠6、12、24h血清淀粉酶、肌酐、尿素氮及TNF-α、IL-1低于对应时间点未干预的SAP大鼠,两者差异有统计学意义(P＜0.05);(3)间充质干细胞干预后,SAP大鼠6、12、24 h肾脏间质毛细血管变化均轻于对应时间点未注射SAP大鼠;(4)间充质干细胞干预后,SAP大鼠12、24 h AQPl mRNA均高于对应时间点未干预的SAP大鼠,两者差异有统计学意义(P＜0.05);6、12、24 h AQP1蛋白均高于对应时间点未干预的SAP大鼠,两者差异有统计学意义(P＜0.05).结论 骨髓间充质干细胞能减轻SAP大鼠肾损害,其机制可能同抑制炎性因子表达,减轻间质毛细血管损害,阻滞肾脏AQP1表达下调有关.     

罗格列酮对重症急性胰腺炎大鼠胰腺组织STAT1的影响

目的 探讨罗格列酮对重症急性胰腺炎(SAP)大鼠胰腺组织信号转导与转录激活因子1(STAT1)的影响.方法 将54只Wistar大鼠随机分为假手术组(S0组)、重症急性胰腺炎组(SAP组)、罗格列酮预处理组(ROSI组),每组18只.逆行胆胰管注射5%牛磺胆酸钠制备SAP模型.ROSI组造模前30 min经股静脉注射罗格列酮(6 mg/kg),然后制备SAP模型.术后3、6、12 h心脏取血处死大鼠,每个时间点6只,测定血清淀粉酶水平,胰腺组织病理切片HE染色后评分;免疫组织化学方法检测胰腺组织磷酸化STAT1蛋白的表达情况;RT-PCR测定胰腺组织肿瘤坏死因子-α(TNF-α)mRNA的表达水平.结果 SAP组各时间点磷酸化STAT1蛋白、TNF-α mRNA的表达水平、血清淀粉酶及胰腺组织光镜下病理评分较SO组显著升高(P<0.01);ROSI组各时间点上述指标较SAP组降低(P<0.05),但较SO组增高(P<0.05).结论 SAP时胰腺组织STAT1活化;罗格列酮对SAP大鼠具有保护作用,其机制可能是通过抑制Janus激酶-信号转导与转录激活因子通路来抑制其下游炎性介质的产生.     

重症急性胰腺炎大鼠p38丝裂原活化蛋白激酶的表达与肺毛细血管内皮屏障损伤

目的研究p38丝裂原活化蛋白激酶（p38 mitogen-activated protein kinase,p38MAPK）在重症急性胰腺炎（severe acute pancreatitis,SAP）大鼠肺组织中的表达情况,并初步探讨p38MAPK与SAP肺毛细血管内皮屏障损伤的关系。方法将40只健康雄性SD大鼠随机（随机数字表法）分为假手术（SO）组和SAP组,SAP组又再分为3、6、12及24 h 4个时间点组,共5组,每组8只。采用胰胆管逆行注射5%牛磺胆酸钠的方法建立SAP大鼠模型。采用HE染色方法观察大鼠肺和胰腺组织的病理学改变;采用ELISA法检测血清肿瘤坏死因子-α（TNF-α）和白细胞介素-1β（IL-1β）水平;采用免疫组化染色方法检测肺组织中磷酸化p38（p-p38）蛋白和水通道蛋白1（AQP1）的表达水平;采用实时定量荧光PCR法（real-time PCR）检测肺组织中AQP1 mRNA的表达水平。结果 SAP各时间点组大鼠肺组织充血水肿,炎症细胞浸润;胰腺组织可见大片坏死,部分腺叶结构模糊甚至消失;血清TNF-α和IL-1β水平均较SO组高（P〈0.05）。SO组大鼠肺组织中p-p38蛋白仅有微量表达,而在SAP3 h组,p-p38蛋白的表达就明显上调,在6 h时达高峰,24 h时仍高于SO组（P〈0.05）。SAP各时间点组大鼠肺组织中AQP1 mRNA及其蛋白的表达水平均较SO组下降（P〈0.05）,并随着时间的推移而逐渐下降;SAP组大鼠AQP1 mRNA的表达与TNF-α、IL-1β及p-p38蛋白之间均存在负相关关系（r=-0.87,P〈0.05;r=-0.88,P〈0.05;r=-0.78,P〈0.05）。结论肺组织中AQP1蛋白表达的下调是SAP肺毛细血管内皮屏障损伤的重要原因之一,其可能与p38MAPK的激活及炎症因子的过度释放有关。     

MCP-1在SAP大鼠胰腺及肠黏膜组织中的表达

目的 观察单核细胞趋化蛋白-1 （MCP-1）在重症急性胰腺炎（severe acute pancreastitis,SAP）大鼠血清、胰腺及肠黏膜组织中的表达并探讨其机理。方法 24只SD大鼠随机均分为对照组和SAP组。对照组大鼠开腹后仅翻动肠管,SAP组以3%牛磺胆酸钠按0.05 mL/100 g逆行注入大鼠胆胰管（注射时间1 min） 复制SAP模型。2组大鼠分别于制模后12及24 h采集血标本和胰腺及回肠组织标本,进行如下指标检测：①ELISA法测定血清中MCP-1及IL-10水平;②比色法测定淀粉酶（amylase,AMY）水平及二胺氧化酶（diamine oxydase,DAO）水平;③RT-PCR法检测胰腺及回肠组织中MCP-1 mRNA的表达;④观察胰腺及回肠组织的病理学改变。结果 SAP组血清中MCP-1、IL-10、AMY和DAO水平均较对照组升高（P＜0.01）;SAP组胰腺及回肠组织中MCP-1 mRNA表达较对照组上调（P＜0.01）,胰腺组织的病理学评分明显增高（P＜0.01）。结论 MCP-1在SAP大鼠血清、胰腺及回肠组织中的表达均上调,且加重了胰腺和肠道组织的损伤。     

紧密连接蛋白1与重症急性胰腺炎大鼠胰腺微血管损伤关系的实验研究

目的研究重症急性胰腺炎（severe acute pancreatitis,SAP）大鼠紧密连接蛋白1（ZO-1）随时间的变化及其与SAP微血管损伤和胰腺组织病理学评分的关系。方法将48只Wistar大鼠随机均分为假手术组（SO组）和SAP组。SO组大鼠开腹后仅翻动胰腺;SAP组大鼠开腹后,以逆行胰胆管微泵注射5%牛磺胆酸钠法制备SAP模型。2组大鼠分别于手术后6、12及24 h各处死8只大鼠,取腹主动脉血测定外周血中淀粉酶、胰蛋白酶、白介素-8（IL-8）、肿瘤坏死因子-α（TNF-α）及ZO-1蛋白水平;取胰腺组织行HE染色,观察其病理学变化并评分;同时行免疫组化染色检测ZO-1蛋白的表达情况。结果同时点与SO组比较,各时点SAP组的血清淀粉酶、胰蛋白酶、IL-8、TNF-α及ZO-1蛋白水平均较高（P〈0.05）。SAP-6 h组和12 h组的血清淀粉酶水平均低于24 h组（P〈0.05）;SAP组内大鼠的胰蛋白酶、IL-8和ZO-1蛋白水平均随时点延长逐渐升高,各时点组间两两比较差异均有统计学意义（P〈0.05）;SAP组内3个时点组间TNF-α水平的差异无统计学意义（P〉0.05）。多重线性回归模型结果显示,SAP组血清ZO-1蛋白水平与胰腺组织病理学评分（b=0.96,P〈0.05）、血清淀粉酶水平（b=0.87,P〈0.05）、胰蛋白酶水平（b=0.72,P〈0.05）及IL-8水平（b=0.69,P〈0.05）均呈正相关,而与TNF-α水平的关系无统计学意义（P〉0.05）。HE染色结果显示,各时点SAP组大鼠的胰腺组织损伤程度重于SO组,且随时间延长,SAP大鼠胰腺组织的病理学损伤加重;SAP-12 h组和24 h组的胰腺组织病理学评分均高于6 h组（P〈0.05）。SP免疫组化染色结果显示,随时间延长,SAP组大鼠胰腺腺泡细胞间及毛细血管壁的ZO-1蛋白颗粒数量减少,且在毛细血管中的表达不连续。结论在SAP的进程中,血清中ZO-1蛋白的水平上升,同时其在胰腺组织中的表达呈下调趋势,表明其与SAP时的胰腺微血管损伤有关。     

杭州健康女性定量骨超声测定原发性骨质疏松

目的 评价杭州健康女性骨超声速度(SOS)值随增龄减少和骨质疏松患病率，建立杭州地区女性骨超声速度值参考数据库。方法 定量超声法测定1208例杭州地区健康女性桡骨远端(RAD)，第3指骨近节(PLX)，第V跖骨(MTR)和胫骨中段(TIB)的超声速度值。结果 RAD、PLX、MTR和TIBSOS峰值(Peak of SOS)均出现在40-45岁，TJB的SOS峰值出现在35—40岁，此后随年龄增长而下降。绝经后妇女在绝经后早期和晚期各有1个SOS快速减少期，前见于桡骨近端，平均年减少率为2．4％，后见于胫骨中段，平均年减少率为1．8％。各部位骨SOS累积减少率随年龄增长而增加，到85岁4部位累积减少为13％-18％。60岁以后骨质疏松性症(OP)检出率为45％-70％，OP检出率以桡骨远端最高，60-70岁平均为67％，第3指骨近端次之约50％，胫骨中段最低为36％；75岁以后分别为70％，65％和45％。结论 全身各部位骨超声速度值到达峰值的年龄不同，峰值也各有差异。绝经后妇女骨超声速度值随年龄增加减少较快，应予激素和补钙治疗，桡骨远端为本地区SOS检测和OP检出的敏感部位。     

Importance of echocardiography in prognosis of surgical outcomes in cholecystitis in elderly patients

The authors propose to use more often echocardiography (EchoCG) in examination of elderly (over 60 years) of age patients with cholecystitis that permits to increase surgical activity to 92.4%. Left ventricular ejection fraction is the most informative. When this fraction is lower than 45% surgery must be recommended on vital indications only. EchoCG was used in 155 patients with cholecystitis, 131 of them were operated. 2 (1.52%) patients died due to acute cardio-vascular insufficiency and pulmonary artery thromboembolism.     

脊髓胶质细胞在小鼠骨癌痛形成中的作用

Objective To evaluate the role of gliocyte in the spinal cord in the development of bone cancer pain (BCP) in mice. Methods Forty male C3H/He mice aged 8-10 weeks weighing 18-22 g were randomly divided into 4 groups ( n = 10 each) : group I sham operation (group S) , group II BCP, group Ⅲ PBS and group IV minocyline (group M) . In group BCP, PBS and M, bone cancer pain was produced by injection of NCTC2472 fibrosarcoma cell suspension (2 x 105 cells) 10 μl into medullary cavity of calcaneus bone, while in group S, PBS solution 10 μl was injected instead of cancer cell suspension. In group PBS and M, PBS 5 μl and minocyline 5 μl (dissolved to 0.2 mmol/L in PBS)_were given IT immediately before cancer cell inoculation once a day for 11 consecutive days respectively. Mechanical pain threshold was measured at 1 d before cancer cell inoculation, and at 0, 3, 5, 7, 9 and 11d after cancer cell inoculation. Cold pain threshold was measured at 3, 7, 9 and 11d after cancer cell inoculation. The animals were killed after measurement of pain threshold and L4-6, segment of spinal cord was removed for determination of GFAP and CD11b expression by Western blot. Results Compared with group S, mechanical pain threshold was significantly increased at 3-11 d after cancer cell inoculation in group BCP and PBS, and at 3 and S d after cancer cell inoculation in group M, and cold pain threshold was significantly increased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was up-regulated in group BCP, PBS and M ( P < 0.05) . Compared with group BCP, mechanical pain threshold was significantly decreased at 3-11 d after cancer cell inoculation, cold pain threshold was significantly decreased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was down-regulated in group M ( P <0.05) . ConclusionThe activiton of gliocyte in the spinal cord is involved in the development of bone cancer pian in mice.     

脊髓胶质细胞在小鼠骨癌痛形成中的作用

Objective To evaluate the role of gliocyte in the spinal cord in the development of bone cancer pain (BCP) in mice. Methods Forty male C3H/He mice aged 8-10 weeks weighing 18-22 g were randomly divided into 4 groups ( n = 10 each) : group I sham operation (group S) , group II BCP, group Ⅲ PBS and group IV minocyline (group M) . In group BCP, PBS and M, bone cancer pain was produced by injection of NCTC2472 fibrosarcoma cell suspension (2 x 105 cells) 10 μl into medullary cavity of calcaneus bone, while in group S, PBS solution 10 μl was injected instead of cancer cell suspension. In group PBS and M, PBS 5 μl and minocyline 5 μl (dissolved to 0.2 mmol/L in PBS)_were given IT immediately before cancer cell inoculation once a day for 11 consecutive days respectively. Mechanical pain threshold was measured at 1 d before cancer cell inoculation, and at 0, 3, 5, 7, 9 and 11d after cancer cell inoculation. Cold pain threshold was measured at 3, 7, 9 and 11d after cancer cell inoculation. The animals were killed after measurement of pain threshold and L4-6, segment of spinal cord was removed for determination of GFAP and CD11b expression by Western blot. Results Compared with group S, mechanical pain threshold was significantly increased at 3-11 d after cancer cell inoculation in group BCP and PBS, and at 3 and S d after cancer cell inoculation in group M, and cold pain threshold was significantly increased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was up-regulated in group BCP, PBS and M ( P < 0.05) . Compared with group BCP, mechanical pain threshold was significantly decreased at 3-11 d after cancer cell inoculation, cold pain threshold was significantly decreased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was down-regulated in group M ( P <0.05) . ConclusionThe activiton of gliocyte in the spinal cord is involved in the development of bone cancer pian in mice.     

脊髓胶质细胞在小鼠骨癌痛形成中的作用

Objective To evaluate the role of gliocyte in the spinal cord in the development of bone cancer pain (BCP) in mice. Methods Forty male C3H/He mice aged 8-10 weeks weighing 18-22 g were randomly divided into 4 groups ( n = 10 each) : group I sham operation (group S) , group II BCP, group Ⅲ PBS and group IV minocyline (group M) . In group BCP, PBS and M, bone cancer pain was produced by injection of NCTC2472 fibrosarcoma cell suspension (2 x 105 cells) 10 μl into medullary cavity of calcaneus bone, while in group S, PBS solution 10 μl was injected instead of cancer cell suspension. In group PBS and M, PBS 5 μl and minocyline 5 μl (dissolved to 0.2 mmol/L in PBS)_were given IT immediately before cancer cell inoculation once a day for 11 consecutive days respectively. Mechanical pain threshold was measured at 1 d before cancer cell inoculation, and at 0, 3, 5, 7, 9 and 11d after cancer cell inoculation. Cold pain threshold was measured at 3, 7, 9 and 11d after cancer cell inoculation. The animals were killed after measurement of pain threshold and L4-6, segment of spinal cord was removed for determination of GFAP and CD11b expression by Western blot. Results Compared with group S, mechanical pain threshold was significantly increased at 3-11 d after cancer cell inoculation in group BCP and PBS, and at 3 and S d after cancer cell inoculation in group M, and cold pain threshold was significantly increased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was up-regulated in group BCP, PBS and M ( P < 0.05) . Compared with group BCP, mechanical pain threshold was significantly decreased at 3-11 d after cancer cell inoculation, cold pain threshold was significantly decreased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was down-regulated in group M ( P <0.05) . ConclusionThe activiton of gliocyte in the spinal cord is involved in the development of bone cancer pian in mice.     

脊髓胶质细胞在小鼠骨癌痛形成中的作用

Objective To evaluate the role of gliocyte in the spinal cord in the development of bone cancer pain (BCP) in mice. Methods Forty male C3H/He mice aged 8-10 weeks weighing 18-22 g were randomly divided into 4 groups ( n = 10 each) : group I sham operation (group S) , group II BCP, group Ⅲ PBS and group IV minocyline (group M) . In group BCP, PBS and M, bone cancer pain was produced by injection of NCTC2472 fibrosarcoma cell suspension (2 x 105 cells) 10 μl into medullary cavity of calcaneus bone, while in group S, PBS solution 10 μl was injected instead of cancer cell suspension. In group PBS and M, PBS 5 μl and minocyline 5 μl (dissolved to 0.2 mmol/L in PBS)_were given IT immediately before cancer cell inoculation once a day for 11 consecutive days respectively. Mechanical pain threshold was measured at 1 d before cancer cell inoculation, and at 0, 3, 5, 7, 9 and 11d after cancer cell inoculation. Cold pain threshold was measured at 3, 7, 9 and 11d after cancer cell inoculation. The animals were killed after measurement of pain threshold and L4-6, segment of spinal cord was removed for determination of GFAP and CD11b expression by Western blot. Results Compared with group S, mechanical pain threshold was significantly increased at 3-11 d after cancer cell inoculation in group BCP and PBS, and at 3 and S d after cancer cell inoculation in group M, and cold pain threshold was significantly increased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was up-regulated in group BCP, PBS and M ( P < 0.05) . Compared with group BCP, mechanical pain threshold was significantly decreased at 3-11 d after cancer cell inoculation, cold pain threshold was significantly decreased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was down-regulated in group M ( P <0.05) . ConclusionThe activiton of gliocyte in the spinal cord is involved in the development of bone cancer pian in mice.     

脊髓胶质细胞在小鼠骨癌痛形成中的作用

目的 评价脊髓胶质细胞在小鼠骨癌痛形成中的作用.方法 健康雄性C3H/He小鼠40只,周龄8～10周,体重18～22 g,随机分为4组(n=10):假手术组(S组)、骨癌痛组(B组)、PBS组(P组)和米诺环素组(M组).S组跟骨骨髓腔内注射PBS 10 μl;余3组跟骨骨髓腔内注射含2×105个骨纤维肉瘤细胞的PBS 10 μl制备骨癌痛模型,于造模前即刻开始PBS组鞘内注射PBS 5μl,M组鞘内注射米诺环素(用PBS溶解为0.2 mmol/L)5μl,1次/d,连续11 d.于造模前1 d、造模后即刻、3、5、7、9、11 d时测定机械痛阈;于造模后3、7、9、11 d机械痛阈测定结束后测定冷痛阈.痛阈测定结束后处死小鼠,取脊髓组织,测定神经胶质纤维酸性蛋白(GFAP)和CD11b的表达水平.结果 与S组比较,B组和P组造模后3-11 d时、M组造模后3、5 d时机械痛阈升高,B组、P组和M组造模后7～11 d时冷痛阈升高,脊髓CD11b和GFAP表达上调(P<0.05).与B组比较,M组造模后3-11 d时机械痛阈降低,造模后7-11 d时冷痛阈降低,脊髓CD11b和GFAP表达下调(P<0.05).结论 脊髓胶质细胞(星形胶质细胞和小胶质细胞)的激活参与了小鼠骨癌痛的形成.     

脊髓胶质细胞在小鼠骨癌痛形成中的作用

Objective To evaluate the role of gliocyte in the spinal cord in the development of bone cancer pain (BCP) in mice. Methods Forty male C3H/He mice aged 8-10 weeks weighing 18-22 g were randomly divided into 4 groups ( n = 10 each) : group I sham operation (group S) , group II BCP, group Ⅲ PBS and group IV minocyline (group M) . In group BCP, PBS and M, bone cancer pain was produced by injection of NCTC2472 fibrosarcoma cell suspension (2 x 105 cells) 10 μl into medullary cavity of calcaneus bone, while in group S, PBS solution 10 μl was injected instead of cancer cell suspension. In group PBS and M, PBS 5 μl and minocyline 5 μl (dissolved to 0.2 mmol/L in PBS)_were given IT immediately before cancer cell inoculation once a day for 11 consecutive days respectively. Mechanical pain threshold was measured at 1 d before cancer cell inoculation, and at 0, 3, 5, 7, 9 and 11d after cancer cell inoculation. Cold pain threshold was measured at 3, 7, 9 and 11d after cancer cell inoculation. The animals were killed after measurement of pain threshold and L4-6, segment of spinal cord was removed for determination of GFAP and CD11b expression by Western blot. Results Compared with group S, mechanical pain threshold was significantly increased at 3-11 d after cancer cell inoculation in group BCP and PBS, and at 3 and S d after cancer cell inoculation in group M, and cold pain threshold was significantly increased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was up-regulated in group BCP, PBS and M ( P < 0.05) . Compared with group BCP, mechanical pain threshold was significantly decreased at 3-11 d after cancer cell inoculation, cold pain threshold was significantly decreased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was down-regulated in group M ( P <0.05) . ConclusionThe activiton of gliocyte in the spinal cord is involved in the development of bone cancer pian in mice.     

脊髓胶质细胞在小鼠骨癌痛形成中的作用

Objective To evaluate the role of gliocyte in the spinal cord in the development of bone cancer pain (BCP) in mice. Methods Forty male C3H/He mice aged 8-10 weeks weighing 18-22 g were randomly divided into 4 groups ( n = 10 each) : group I sham operation (group S) , group II BCP, group Ⅲ PBS and group IV minocyline (group M) . In group BCP, PBS and M, bone cancer pain was produced by injection of NCTC2472 fibrosarcoma cell suspension (2 x 105 cells) 10 μl into medullary cavity of calcaneus bone, while in group S, PBS solution 10 μl was injected instead of cancer cell suspension. In group PBS and M, PBS 5 μl and minocyline 5 μl (dissolved to 0.2 mmol/L in PBS)_were given IT immediately before cancer cell inoculation once a day for 11 consecutive days respectively. Mechanical pain threshold was measured at 1 d before cancer cell inoculation, and at 0, 3, 5, 7, 9 and 11d after cancer cell inoculation. Cold pain threshold was measured at 3, 7, 9 and 11d after cancer cell inoculation. The animals were killed after measurement of pain threshold and L4-6, segment of spinal cord was removed for determination of GFAP and CD11b expression by Western blot. Results Compared with group S, mechanical pain threshold was significantly increased at 3-11 d after cancer cell inoculation in group BCP and PBS, and at 3 and S d after cancer cell inoculation in group M, and cold pain threshold was significantly increased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was up-regulated in group BCP, PBS and M ( P < 0.05) . Compared with group BCP, mechanical pain threshold was significantly decreased at 3-11 d after cancer cell inoculation, cold pain threshold was significantly decreased at 7-11 d after cancer cell inoculation, and expression of CD11b and GFAP was down-regulated in group M ( P <0.05) . ConclusionThe activiton of gliocyte in the spinal cord is involved in the development of bone cancer pian in mice.