精子相关抗原6与速激肽1相互作用关系的探讨

目的:构建速激肽1(Tac1)基因真核表达载体并探讨其与精子相关抗原6(SPAG6)之间的相互作用。方法:提取10只昆明雄性小鼠的心、肝、脾、肺、肾、脑、肌肉、睾丸8个组织的RNA,逆转录成c DNA后,用RT-PCR法观察Tac1在各组织中的表达。构建Tac1/p GADT7、Tac1/p EGFP-N2重组质粒,将Tac1/p EGFP-N2转染至CHO和COS-1细胞,采用免疫荧光染色及Western印迹检测TAC1在细胞中的定位和蛋白表达。将Tac1/p GADT7与Spag6/p GBKT7进行酵母双杂交实验,提取酵母蛋白用Western印迹检测TAC1与SPAG6之间是否存在相互作用。结果:Tac1主要在睾丸、脑、心脏中表达。酶切和测序鉴定表明Tac1重组质粒构建成功,酶切鉴定片段390 bp。TAC1单独转染时,定位于CHO细胞的整个胞体,与SPAG6质粒共转染后,TAC1被募集至细胞微管中表达,用Western印迹检测到相对分子质量约为40 000的融合蛋白表达。与SPAG6的酵母双杂交实验显示TACl/SPAG6在缺少3种氨基酸(Leu、Trp、His)的培养板上有菌落生成,经Western印迹证实酵母融合蛋白中含有TAC1和SPAG6。结论:成功构建Tac1重组质粒,并利用该质粒证实了TAC1与SPAG6之间存在相互作用关系。     

ARM结构的缺失对SPAG6在哺乳细胞中定位的影响

目的本研究构建精子相关抗原6(SPAG6)基因全长及6个不同长短ARM序列的真核表达载体pEGFPN2-SPAG6-△ARM,并使其在CHO细胞中表达,观察全长及6个ARM结构缺失后对真核细胞CHO细胞中SPAG6蛋白定位的影响。方法利用NCBI数据库,寻找小鼠SPAG6蛋白的保守功能区,分析全长蛋白序列,检索出SPAG6有7个ARM区域。利用PCR技术扩增出6个缺失不同ARM结构的SPAG6 cDNA,测序后亚克隆至携带绿色荧光蛋白基因的pEGFP-N2真核表达载体中,对阳性克隆进行酶切和测序鉴定,将构建的重组质粒转染到CHO细胞中,分别提取细胞蛋白进行Western blot检测。利用共聚焦激光扫描显微镜观察7个不同SPAG6/GFP融合蛋白在CHO细胞内的定位。结果酶切和测序鉴定表明,全长及6个缺失不同长短ARM结构的真核表达质粒构建成功,转染实验发现重组质粒均能够在CHO细胞中表达,但仅全长表达产物定位于微管,缺失任何一个ARM区域都可影响在细胞中的微管定位。结论SPAG6在哺乳动物细胞内的正确定位依赖于全长。该研究为进一步研究SPAG6蛋白的结构与功能奠定基础。     

碳酸酐酶Ⅱ在人睾丸、精子中的表达及其临床意义

目的:观察碳酸酐酶Ⅱ(CA2)在人睾丸、精子中的表达定位及比较CA2在生育男性和弱精子症患者精子中的表达差异。方法:通过免疫组化观察CA2在人睾丸中的定位;通过免疫荧光观察CA2在人精子中的定位;收集健康生育男性和弱精子症患者的精液标本各16份,60%Percoll分离精液标本,排除生精细胞和白细胞,采用Western印迹方法,从蛋白水平检测CA2的表达。结果:免疫组化结果显示CA2在人睾丸中特异性定位于长形精子的尾部;免疫荧光结果显示CA2在人精子的尾部有较强表达。Western印迹结果显示弱精子症患者精子中CA2的表达显著高于生育男性(1.84±0.32vs1.41±0.26,P<0.05)。结论:CA2在睾丸生精周期的长形精子阶段才表达,定位于精子的尾部。CA2在弱精子症患者精子中表达显著增高,提示其可能与精子活动力下降有关。     

实验性精索静脉曲张对青春期大鼠睾丸、附睾精子结合抗原11 mRNA及其蛋白异构体表达的影响

目的:研究实验性左侧精索静脉曲张(ELV)对青春期大鼠睾丸和附睾中精子结合抗原11(SPAG11)mRNA及其蛋白异构体SPAG11E表达的影响,并探讨其与精索静脉曲张导致男性不育的关系。方法:40只SD大鼠随机分为ELV2周组、4周组,假手术对照2周组、4周组,每组10只。ELV组行部分结扎左肾静脉建立青春期SD大鼠ELV模型,假手术对照组仅显露左肾静脉过程,但不结扎。应用RT-PCR和免疫组化法(n=5)检测SPAG11 mR-NA及SPAG11E蛋白在ELV2周组和ELV4周组及各自对照组大鼠双侧睾丸、附睾中的表达变化。结果:RT-PCR结果显示,SPAG11基因376bp的特异扩增产物仅见于大鼠附睾组织中。免疫组化结果显示,SPAG11E蛋白主要与睾丸生精上皮的圆形和长形精子细胞的顶体泡和顶体、睾丸间质细胞的胞质相结合;在附睾管上皮主细胞胞质和顶部静纤毛中表达。对RT-PCR的相对吸光度值和免疫组化的灰度值进行统计学分析显示:①左侧附睾ELV2周和4周组SPAG11 mRNA和SPAG11E蛋白的表达与各自右侧组及各自对照组比较均有显著减弱(P<0.05或P<0.01);左侧附睾ELV4周组SPAG11mRNA与SPAG11E的表达较ELV2周组显著减少(P<0.05或P<0.01);右侧附睾ELV4周组SPAG11E的表达也较ELV2周组显著减少(P<0.01);②两实验组双侧睾丸SPAG11E蛋白的表达与相应对照组比较均未见明显差异(P>0.05),且在ELV2周组和ELV4周组之间该蛋白的表达也无显著性差异(P>0.05)。结论:SPAG11是特异表达于附睾的基因,在大鼠睾丸和附睾中均可见其蛋白异构体SPAG11E免疫阳性反应,其定位及表达水平具有细胞特异性和区域特异性,而且SPAG11 mRNA及SPAG11E蛋白在ELV模型鼠附睾中的表达发生了明显变化,这提示SPAG11不仅可能在大鼠精子发生、成熟过程中发挥重要作用,还可能与精索静脉曲张所致的男性不育相关。     

血管内皮生长因子和其受体Flt-1在青春期大鼠睾丸、附睾及附睾内精子上的表达研究

目的:通过对血管内皮生长因子(VEGF)及其受体Flt-1在大鼠睾丸、附睾及附睾内精子上表达的研究,探讨其在雄性生殖系统中的作用。方法:免疫组化SP法和免疫荧光法检测20只青春期SD大鼠睾丸、附睾及精子上VEGF和Flt-1蛋白的表达情况。结果:VEGF和Flt-1在大鼠睾丸和附睾组织及精子上均有特征性表达。睾丸内VEGF蛋白表达于生精细胞、精子细胞发育中的顶体、Sertoli和Leydig细胞胞质内;Flt-1只见于精子细胞发育中的顶体及Leydig细胞胞质中。附睾中VEGF表达于各段上皮主细胞胞质内,而Flt-1表达于头、尾段上皮主细胞胞质内,体部免疫染色阴性;两者在附睾上皮亮细胞、晕细胞和基细胞中均为阴性表达。免疫荧光染色显示,VEGF和Flt-1共同定位于附睾内精子头部的顶体,尾部的颈、中和主段。结论:VEGF和Flt-1蛋白在大鼠睾丸、附睾及精子中的特异性表达提示,他们可由不同生精上皮细胞、间质细胞和附睾主细胞产生,可能以自分泌或旁分泌的形式单独或共同作用于睾丸和附睾的生殖细胞或Leydig细胞,直接或间接地影响精子的发生、发育和成熟过程,并与精子的活动和受精能力有关。     

GGNBP2与GGN在小鼠睾丸生精细胞定位及作用

目的探讨配子生成素结合蛋白2(GGNBP2)和配子生成素(GGN)在小鼠睾丸生殖过程中的细胞定位以及作用,初步阐明GGNBP2缺失引起睾丸生精功能障碍的机制。方法采用免疫沉淀方法检测GGNBP2与GGN相互作用;免疫荧光、免疫组化检测GGNBP2与GGN细胞定位;PCR检测野生型Ggnbp2基因敲除型小鼠睾丸生殖细胞GGN mRNA表达;Western blot检测其GGN蛋白表达。结果 GGNBP2与GGN相互作用,两种蛋白共同定位于精母细胞和精子细胞(Golgi phase,Cap phase)中的细胞核和胞浆,精子细胞(Acrosome phase,Maturation phases)中的顶体和尾部,GGNBP2缺失引起GGNmRNA水平和蛋白水平减低,在精母细胞中GGN定位改变。结论 Ggnbp2基因敲除引起小鼠生精功能缺陷可能通过降低GGN表达,改变GGN细胞定位,DNA双链损伤修复机制受损。     

精子相关抗原SPAG9在人精液精子中的表达及定位

目的:SPAG9作为MAPK家族中的成员,在精卵融合过程中发挥着重要的作用。本研究检测SPAG9在人精液精子中的表达情况。方法:取人不同组织(肌肉、肝、食管、肺、胃、肾、前列腺、子宫、睾丸、附睾)标本及健康男性的精液精子,为了排除圆形细胞的污染,精液标本经非连续性Percoll梯度离心、分离纯化;采用逆转录-聚合酶链式反应(RT-PCR)和间接免疫荧光方法,从mRNA和蛋白水平检测SPAG9在精子中的表达。结果:RT-PCR结果显示,SPAG9mRNA不仅在各种不同的组织中有表达,而且在人精液精子中也有表达;间接免疫荧光结果显示,SPAG9蛋白主要定位于人精液精子头部的赤道板和精子尾部鞭毛上。结论:SPAG9在人精液精子中有表达,可能在精子获能和运动中有一定作用。     

去泛素化酶24基因在小鼠睾丸精子发生过程中的表达特征

目的:研究去泛素化酶24(USP24)基因在小鼠睾丸精子发生过程中的表达特征,初步探讨其在生精过程中的作用。方法:通过实时荧光定量PCR(qPCR)和免疫荧光等方法检测USP24在不同周龄野生型小鼠睾丸组织以及成年雄激素受体敲除(ARKO)小鼠睾丸中的表达特征;采用双荧光素酶报告基因实验检测USP24启动子转录活性。结果:qPCR和免疫荧光结果表明,USP24基因在出生1周时表达水平较低,3周时急剧升高,随后维持在相似水平至第8周;USP24主要定位于支持细胞和生精细胞的细胞质;与野生型相比,USP24在ARKO小鼠睾丸表达降低;性成熟小鼠睾丸中,USP24定位于成熟精子头部后端及中部。双荧光素酶报告基因实验结果显示,睾酮刺激后USP24启动子的转录活性升高。结论:USP24基因的表达水平的升高与小鼠的性发育相关,且其蛋白在小鼠成熟精子上表达。USP24是受雄激素受体(AR)调控的靶基因。USP24可能参与调控小鼠的精子发生过程。     

无精子症和生精功能正常者睾丸组织中血红素加氧酶的表达与差异性研究

目的:对人类睾丸组织中表达血红素加氧酶(HO)的细胞进行定位;通过测定原发性无精子症及梗阻性无精子症患者睾丸组织中血红素加氧酶1(HO-1)的表达量与正常睾丸组织中HO-1表达量的差异性,来探讨其与无精子症发病的相关性。方法:应用免疫组化方法对人类睾丸组织中表达HO的细胞进行定位;采用逆转录-荧光定量PCR(FQ-PCR)方法定量检测无精子症患者与正常人睾丸组织HO-1及HO-2基因水平的表达量;应用W est-ern印迹检测各组之间HO蛋白水平表达量。结果:在正常睾丸组织,HO-1主要表达在支持细胞上;而HO-2在支持细胞和各级生精细胞中均有表达;FQ-PCR结果显示非梗阻性无精子症患者睾丸组织HO-1、HO-2的表达量均显著低于正常组及梗阻性无精子症组(P<0.05),差异具有统计学意义。而梗阻性无精子症患者睾丸组织表达HO-1、HO-2的量与正常组相比无显著性差异。W estern印迹结果显示HO-1蛋白水平的表达量差异与基因水平一致。而HO-2的蛋白水平在各组之间表达没有显著性差异。结论:非梗阻性无精子症患者睾丸组织中HO的表达量显著性降低,且HO-1无论是蛋白水平还是基因水平的差异一致。HO-1可以通过抗炎、抗氧化、抗凋亡的机制保护睾丸组织免受各种应激的损伤,从而维护正常的生精功能。可见,HO-1的减少可能与生精功能低下相关,这可能是非梗阻性无精子症的发病机制之一。     

RhoGDIα在人睾丸、精子中表达及其与体外受精成功率相关性的初步分析

目的:观察Rho特异性的GDP解离抑制因子α(RhoGDIα)在人睾丸、精子中的表达及定位并比较RhoGDIα在正常生育男性和体外受精(IVF)不育患者精子中的表达差异。方法:通过免疫组化方法观察RhoGDIα在人睾丸中的定位;通过免疫荧光方法观察RhoGDIα在人精子获能前、获能后、顶体反应后的定位;收集正常男性精液标本(10例),高受精率(≥60%,12例)和低受精率(<60%,13例)的IVF不育患者的精液标本,Percoll细胞分离液分离精液标本,排除生精细胞和白细胞,分别通过免疫荧光和Western印迹方法,检测RhoGDIα的表达。结果:免疫组化结果显示RhoGDIα存在于人睾丸各级生精细胞中,并在长形精子细胞高表达。免疫荧光结果显示RhoGDIα在人精子的顶体和尾部有较强表达,并且随着获能的发生,在顶体上的表达减弱,当顶体反应发生后,顶体上的表达完全消失。Western印迹结果显示不易受精的IVF患者精子中RhoGDIα的表达(0.66±0.18)显著低于正常组(1.13±0.21)和易受精的IVF患者组(0.97±0.17)。结论:RhoGDIα定位于人精子的顶体和尾部,可能参与了精子运动,获能及顶体反应过程。RhoGDIα在受精率低下患者精子中表达显著降低,提示RhoGDIα可能成为一个新的男性不育的诊断指标,并且可能成为IVF供精选择的一个指标。     

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.