徐州医学院学报
徐州醫學院學報
서주의학원학보
ACTA ACADEMIAE MEDICINAE XUZHOU
2014年
5期
281-284
,共4页
糖尿病神经病理痛%加巴喷丁%背根神经节%磷酸化信号转导和转录激活因子3
糖尿病神經病理痛%加巴噴丁%揹根神經節%燐痠化信號轉導和轉錄激活因子3
당뇨병신경병리통%가파분정%배근신경절%린산화신호전도화전록격활인자3
diabetic neuropathological pain%gabapentin%dorsal root ganglion%p-STAT3
目的:观察加巴喷丁(gabapentin, GBP)对糖尿病神经病理痛大鼠背根神经节磷酸化信号转导和转录激活因子3(p-STAT3)表达的影响。方法80只成年健康雄性SD大鼠,随机分为正常组(Control 组)、糖尿病神经病理痛组( DNP组)、生理盐水+DNP组( SC+DNP组)和加巴喷丁+DNP组( GBP+DNP组),每组20只。采用链脲佐菌素(STZ)诱导的糖尿病神经病理痛大鼠模型;SC+DNP组和GBP+DNP组于STZ注射15天起分别腹腔注射生理盐水或GBP 50 mg/kg,1次/d,连续7天;采用行为学测试测定STZ注射前1天及注射后3、7、10、14、21、28天大鼠缩足反射机械刺激阈值(PWMT)和缩足反射热辐射潜伏期(PWTL),免疫组化方法检测大鼠背根神经节(DRG)中p-STAT3的表达。结果与Control 组比较, DNP组PWMT〔(3.8±0.84) g〕降低、PWTL〔(5.9±0.94) s〕缩短,DRG中p-STAT3蛋白的表达上调(P<0.05);与DNP组比较, SC+DNP组大鼠在腹腔注射生理盐水后,PWMT〔(4.03±0.5) g〕、PWTL〔(6.2±0.7) s〕和p-STAT3蛋白的表达无明显改变(P>0.05);与DNP组和SC+DNP组比较, GBP+DNP组PWMT〔(8.4±0.87) g〕升高,PWTL〔(10±1.2) s〕延长, DRG中p-STAT3蛋白的表达下调(P<0.05)。结论 GBP能减轻大鼠糖尿病神经病理痛,其机制可能与抑制p-STAT3的表达水平有关。
目的:觀察加巴噴丁(gabapentin, GBP)對糖尿病神經病理痛大鼠揹根神經節燐痠化信號轉導和轉錄激活因子3(p-STAT3)錶達的影響。方法80隻成年健康雄性SD大鼠,隨機分為正常組(Control 組)、糖尿病神經病理痛組( DNP組)、生理鹽水+DNP組( SC+DNP組)和加巴噴丁+DNP組( GBP+DNP組),每組20隻。採用鏈脲佐菌素(STZ)誘導的糖尿病神經病理痛大鼠模型;SC+DNP組和GBP+DNP組于STZ註射15天起分彆腹腔註射生理鹽水或GBP 50 mg/kg,1次/d,連續7天;採用行為學測試測定STZ註射前1天及註射後3、7、10、14、21、28天大鼠縮足反射機械刺激閾值(PWMT)和縮足反射熱輻射潛伏期(PWTL),免疫組化方法檢測大鼠揹根神經節(DRG)中p-STAT3的錶達。結果與Control 組比較, DNP組PWMT〔(3.8±0.84) g〕降低、PWTL〔(5.9±0.94) s〕縮短,DRG中p-STAT3蛋白的錶達上調(P<0.05);與DNP組比較, SC+DNP組大鼠在腹腔註射生理鹽水後,PWMT〔(4.03±0.5) g〕、PWTL〔(6.2±0.7) s〕和p-STAT3蛋白的錶達無明顯改變(P>0.05);與DNP組和SC+DNP組比較, GBP+DNP組PWMT〔(8.4±0.87) g〕升高,PWTL〔(10±1.2) s〕延長, DRG中p-STAT3蛋白的錶達下調(P<0.05)。結論 GBP能減輕大鼠糖尿病神經病理痛,其機製可能與抑製p-STAT3的錶達水平有關。
목적:관찰가파분정(gabapentin, GBP)대당뇨병신경병리통대서배근신경절린산화신호전도화전록격활인자3(p-STAT3)표체적영향。방법80지성년건강웅성SD대서,수궤분위정상조(Control 조)、당뇨병신경병리통조( DNP조)、생리염수+DNP조( SC+DNP조)화가파분정+DNP조( GBP+DNP조),매조20지。채용련뇨좌균소(STZ)유도적당뇨병신경병리통대서모형;SC+DNP조화GBP+DNP조우STZ주사15천기분별복강주사생리염수혹GBP 50 mg/kg,1차/d,련속7천;채용행위학측시측정STZ주사전1천급주사후3、7、10、14、21、28천대서축족반사궤계자격역치(PWMT)화축족반사열복사잠복기(PWTL),면역조화방법검측대서배근신경절(DRG)중p-STAT3적표체。결과여Control 조비교, DNP조PWMT〔(3.8±0.84) g〕강저、PWTL〔(5.9±0.94) s〕축단,DRG중p-STAT3단백적표체상조(P<0.05);여DNP조비교, SC+DNP조대서재복강주사생리염수후,PWMT〔(4.03±0.5) g〕、PWTL〔(6.2±0.7) s〕화p-STAT3단백적표체무명현개변(P>0.05);여DNP조화SC+DNP조비교, GBP+DNP조PWMT〔(8.4±0.87) g〕승고,PWTL〔(10±1.2) s〕연장, DRG중p-STAT3단백적표체하조(P<0.05)。결론 GBP능감경대서당뇨병신경병리통,기궤제가능여억제p-STAT3적표체수평유관。
Objective To investigate the effects of gabapentin on the expression of p -STAT3 in dorsal root ganglia of a rat model of diabetic neuropathological pain ( DNP) .Methods 80 male SD rats weighing 200-220 g were randomly divided into 4groups (20 in each):a control group, a DNP group, a saline (SC+DNP) group and a gabapentin (GBP+DNP) group.Then a rat model of diabetic neuropathological pain was established through injection of streptozocin ( STZ) .Fifteen days after STZ administration , the rats of the SC+DNP and GBP+DNP groups were intraperitonealy in-jected with normal saline and 50 mg/kg GBP, respectively, once per day for seven consecutive days .Paw withdrawal me-chanical thresholds ( PWMT) and paw withdrawal thermal latencies ( PWTL) were measured 1 day before STZ adminis-tration, and 3, 7, 10, 14, 21 and 28 days after STZ administration.Meanwhile, the expression of p -STAT3 in DRG was determined by immune-histochemistry .Results Compared with the control , the DNP group presented significantly reduced PWMT (3.8 ±0.84) and PWTL (5.9 ±0.94), and remarkably enhanced expression of p -STAT3 (P<0 .05).Compared with the DNP group, no substantial changes were detected in PWMT (4.03 ±0.5), PWTL (6.2 ±0. 7) and p-STAT3 expression in the SC +DNP group after injection of normal saline (P>0.05).Compared with the DNP and SC+DNP groups, the GBP+DNP group showed higher PWMT (8.4 ±0.87) and PWTL (10 ±1.2), but down-regulated expression of p -STAT3 in DRG (P<0.05).C onclusion Systemic administration of gabapentin can attenuate diabetic neuropatholgical pain by inhibiting the expression of p -STAT3 in DRG.