股骨近端空心钉锁定钢板治疗青壮年股骨颈骨折患者效果观察

目的分析股骨近端空心钉锁定钢板治疗青壮年股骨颈骨折患者的效果。方法回顾性分析接受股骨近端空心钉锁定钢板治疗的34例青壮年患者的临床资料。结果术后随访10~24个月,34例患者中发生股骨头坏死2例,行髋关节置换术治愈。余患者均获骨性愈合,骨折愈合时间为14.36~17.20周。未发生螺钉松动、断裂和切口感染及深静脉血栓形成等并发症。末次随访依据Harris评分标准评定,优24例、良8例、差2例,优良率为94.12%。结论股骨近端空心钉锁定钢板治疗青壮年股骨颈骨折,内固定牢靠,并发症少,髋关节功能恢复优良率高。     

闭合复位股骨近端空心钉锁定板内固定治疗股骨颈骨折的疗效分析

目的观察并比较股骨近端空心钉锁定板和3枚空心钉内固定治疗股骨颈骨折的临床疗效。方法回顾性分析自2012-01—2012-06诊治的年龄≥18岁且≤65岁的股骨颈骨折80例,采用股骨近端空心钉锁定板内固定治疗40例,采用3枚空心钉内固定治疗40例。观察手术时间、骨折愈合情况,退钉、断板、短期内股骨头坏死情况,以及髋关节功能恢复情况。结果空心钉锁定板组在骨折愈合率、退钉率、短期内股骨头坏死率以及髋关节功能Harris评分优良率方面明显优于3枚空心钉组,差异有统计学意义（P〈0.05）。结论股骨近端空心钉锁定板内固定技术是治疗股骨颈骨折较为理想的方法。     

富血小板血浆与空心钉锁定钢板治疗股骨颈骨折

[目的]探讨富血小板血浆(PRP)与万向空心钉锁定钢板治疗股骨颈骨折的临床疗效。[方法]2012年1月~2015年1月本科收治60例股骨颈骨折患者,以单盲法按数字随机分为PRP联合万向空心钉锁定钢板治疗组(联合组)、单纯万向空心钉锁定钢板治疗组(单纯组),每组30例。对比两组患者手术时间、术中出血量、骨折愈合时间、完全负重所需时间、髋关节功能Haris评分、股骨头坏死发生率。[结果]两组患者手术时间、术中出血量比较差异无统计学意义(P>0.05)。患者平均随访时间(18.82±4.21)个月,在完全负重所需时间[(10.32±1.84)个月vs(12.83±2.25),P<0.001],骨折愈合时间[(9.47±2.64)个月vs(12.76±2.35)个月,P<0.001],髋关节功能Harris评分[(90.12±5.34)vs(78.43±4.14),P<0.001]方面联合组均显著优于单纯组,差异有统计学意义。联合组仅有1例患者发生股骨头坏死,而单纯组有3例发生股骨头坏死,但两组差异无统计学意义(P>0.05)。[结论]PRP联合万向空心钉锁定板治疗青壮年股骨颈骨折可促进骨折愈合,具有固定牢靠、手术创伤小等优点。     

股骨近端空心钉锁定钢板治疗股骨颈骨折

[目的]探讨股骨近端空心钉锁定钢板治疗青壮年股骨颈骨折的临床疗效及适应证。[方法]采用股骨近端空心钉锁定钢板技术治疗青壮年股骨颈骨折患者34例,其中头下型6例,经颈型10例,基底型8例。从骨折临床愈合时间和髋关节功能恢复方面进行评估。[结果]34例患者获随访8²3个月,平均随访时间15.2个月。32例获骨性愈合,2例出现股骨头缺血性坏死。术后所有病例未发生钢板断裂、螺钉松动后退等并发症。[结论]股骨近端空心锁定钢板技术是一种治疗青壮年股骨颈骨折,尤其是粉碎性骨折较好的方法,具有操作简便、损伤小、固定可靠、可早期功能锻炼的优点,值得临床推广应用。     

空心钉与空心钉钢板内固定治疗股骨颈骨折疗效比较

目的比较空心钉与空心钉钢板内固定治疗股骨颈骨折的疗效。方法将68例股骨颈骨折患者根据治疗方式分为空心钉组(37例)和空心钉钢板组(31例)。比较两组切口长度、手术时间、术中出血量、并发症、骨折愈合率和术后6个月髋关节Harris评分。结果手术切口均一期愈合。切口长度、手术时间、术中出血量空心钉组均少(短)于空心钉钢板组(P<0.05)。两组患者均获得随访,时间6~41(21.7±10.8)个月。术后6个月,股骨头坏死及骨折不愈合例数空心钉组均多于空心钉钢板组,但差异无统计学意义(P>0.05);股骨颈短缩及螺钉松动、退出例数空心钉组均多于空心钉钢板组,差异有统计学意义(P<0.05);髋关节Harris评分空心钉组低于空心钉钢板组(P<0.05)。结论空心钉和空心钉钢板内固定治疗股骨颈骨折均可获得较好的临床疗效,空心钉钢板内固定能获得更加稳固的支撑,对患肢早期功能锻炼更有利。     

股骨近端空心钉解剖锁定钢板内固定治疗股骨颈骨折32例临床分析

目的探讨股骨颈骨折采用股骨近端空心钉解剖锁定钢板内固定治疗的近期疗效。方法采用股骨近端空心钉解剖锁定钢板内固定治疗股骨颈骨折32例,术后采用髋关节功能Harris评分标准评定其疗效。结果 32例中2例失访,1例死亡,余29例均得到随访,随访时间10~36个月。末次随访髋关节功能Harris评分:优21例,良6例,可2例。结论股骨近端空心钉解剖锁定钢板内固定较单纯的空心钉内固定在股骨颈骨折的手术治疗中具有创伤小、操作简单、手术时间短等优点,可降低骨折不愈合及股骨头坏死的发生率。     

空心钉“F”技术与倒三角形方式布钉治疗股骨颈骨折的疗效比较

[目的]比较空心钉"F"技术(biplane double-supported screw fixation,F-technique)与倒三角形两种不同布钉方式对股骨颈骨折术后疗效的影响。[方法]2012年1月~2013年12月本院治疗老年股骨颈骨折218例,其中行空心加压螺钉固定129例,分别使用两种不同布钉方式的空心钉固定,"F"技术组:共67例,平均年龄(67.18±5.24)岁;常规技术组:共62例,平均年龄(66.23±4.27)岁。分别记录并比较两组患者手术时间、C型臂X线机透视时间、术中出血量;术后1年对两组患者患侧髋关节活动功能及股骨颈短缩情况进行随访并比较。[结果]两组年龄、性别、合并症、美国麻醉医师协会(American Society of Anesthesiologists,ASA)评分、骨折类型、骨密度差异无统计学意义(P0.05);两组患者麻醉方式、出血量、手术时间及C型臂X线机透视时间差异均无统计学意义(P0.05);术后1年随访,"F"技术组3例随访期间死亡,51例骨折愈合,3例骨折不愈合,3例失效,4例股骨头缺血坏死,其中9例发生股骨颈短缩,Harris髋关节功能评分平均(89.47±9.21)分;常规技术组2例死亡,42例骨折愈合,8例骨折不愈合,9例失效,11例股骨头缺血坏死的病例,17例发生股骨颈短缩,Harris髋关节功能评分平均(83.26±11.24)分。两组相比,常规技术组较"F"技术组更容易发生股骨颈短缩(P0.05),Harris评分较"F"技术组少,说明患肢功能较差(P0.05)。[结论]"F"技术治疗老年股骨颈骨折效果优于常规技术方式布钉,发生股骨颈短缩率降低,术后髋关节功能更好。     

动力髋螺钉联合空心钉治疗A2型股骨粗隆间骨折

[目的]比较动力髋螺钉(DHS)联合空心钉、单纯DHS及Gamma3髓内钉治疗A2型股骨粗隆间骨折的疗效,以探讨A2型骨折的最佳治疗方法。[方法]自2007年1月²012年1月间本病区共手术治疗A2型股骨粗隆间骨折患者233例,其中采用DHS联合空心钉58例,采用单纯DHS者102例,Gamma3髓内钉73例,记录切口长度、手术时间、术中出血量、术后出血量、术中透视次数、住院费用、骨折愈合时间、并发症例数及髋关节Harris评分,计量资料进行方差分析,计数资料采用确切概率法进行分析。[结果]术后随访62012年1月间本病区共手术治疗A2型股骨粗隆间骨折患者233例,其中采用DHS联合空心钉58例,采用单纯DHS者102例,Gamma3髓内钉73例,记录切口长度、手术时间、术中出血量、术后出血量、术中透视次数、住院费用、骨折愈合时间、并发症例数及髋关节Harris评分,计量资料进行方差分析,计数资料采用确切概率法进行分析。[结果]术后随访6²4个月,在切口长度方面,DHS联合空心钉组与其他两组比较差异存在统计学意义(P<0.05);住院费用方面,DHS联合空心钉组少于Gamma3髓内钉组(P<0.05);在骨折愈合和髋关节Harris评分方面,DHS联合空心钉组与单纯DHS组的差异存在统计学意义(P<0.05);在其他方面DHS联合空心钉与Gamma3髓内钉组二者差异无统计学意义(P>0.05);在并发症方面,三组间差异无统计学意义(P>0.05)。[结论]DHS联合空心钉治疗A2型股骨粗隆间骨折是一种肯定和值得推荐的方法。     

加压支撑螺钉与单头螺纹空心钉内固定治疗中青年Pauwels Ⅲ型股骨颈骨折疗效比较

目的 比较双头加压半螺纹空心钉联合全螺纹空心钉加压支撑固定与传统倒三角形分布单头螺纹空心钉内固定治疗中青年Pauwels Ⅲ型股骨颈骨折的临床疗效。方法 回顾性分析自2014-01—2018-06采用闭合复位3枚空心钉内固定治疗的86例中青年Pauwels Ⅲ型股骨颈骨折,其中41例采用双头加压半螺纹空心钉联合全螺纹空心钉加压支撑固定（加压支撑组）,45例采用传统倒三角形分布单头螺纹空心钉内固定（单头螺钉组）。比较两组骨折愈合时间、股骨颈短缩畸形程度、并发症发生率,以及末次随访时髋关节功能Harris评分、髋关节屈伸活动度。结果 86例术后均获得随访,随访时间平均22(15～36)个月。加压支撑组与单头螺钉组骨折愈合时间差异无统计学意义（P>0.05）。加压支撑组垂直方向、水平方向上股骨颈短缩程度小于单头螺钉组,髋关节屈伸活动度大于单头螺钉组,髋关节功能Harris评分高于单头螺钉组,螺钉退出发生率低于单头螺钉组,差异有统计学意义（P<0.05）。结论 双头加压支撑螺钉内固定治疗中青年Pauwels Ⅲ型股骨颈骨折疗效可靠,与单头拉力螺钉内固定比较显著减小了术后股骨颈短缩程...     

切开复位内固定与闭合复位内固定治疗青壮年股骨颈骨折的疗效比较

目的比较切开复位与闭合复位空心钉内固定治疗青壮年股骨颈骨折的临床疗效。方法回顾性分析自2012-12—2016-06诊治的92例青壮年股骨颈骨折,47例采用闭合复位空心钉内固定治疗(闭合复位组),45例切开复位空心钉内固定治疗(切开复位组)。比较2组手术时间、术中出血量、骨折愈合时间、末次随访时髋关节功能Harris评分与并发症情况。结果闭合复位组随访时间(28.3±3.1)个月,切开复位组随访时间(27.5±3.2)个月。与切开复位组比较,闭合复位组手术时间更短,术中出血量更少,差异有统计学意义(P 0.05);但2组骨折愈合时间、术后并发症发生率、末次随访时髋关节功能Harris评分差异无统计学意义(P0.05)。结论对于青壮年股骨颈骨折,闭合复位空心钉内固定创伤小,术后骨折不愈合发生风险较低,而切开复位空心钉内固定术后股骨头缺血性坏死发生风险较低。     

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.