目的观察6-羟基多巴(6-hydroxydopamine,6-OHDA)定向毁损间脑A11核团对缺铁饮食小鼠运动功能的影响,探讨此方法建立不安腿综合征(Restless legs syndrome,RLS)模型的可行性。方法取60只4周龄C57BL/6雄性小鼠,30只予缺铁饮食(iron defici...目的观察6-羟基多巴(6-hydroxydopamine,6-OHDA)定向毁损间脑A11核团对缺铁饮食小鼠运动功能的影响,探讨此方法建立不安腿综合征(Restless legs syndrome,RLS)模型的可行性。方法取60只4周龄C57BL/6雄性小鼠,30只予缺铁饮食(iron deficiency diet,ID),另外30只予正常饮食(normal diet,ND)。1个月后观察小鼠的运动活性,包括水平方向的运动次数(HACTV)、垂直方向的运动次数(VACTV)、总的运动距离(TOT-DIST)和运动时间(MOVTIME)。随后每组各取15只小鼠定向注射6-OHDA至双侧A11区域,其余小鼠注射PBS。并继续原来的饮食处理。毁损1个月后所有动物皮下注射多巴胺受体激动剂ropinirole,比较给药前后小鼠运动活性的变化。对A11区域进行酪氨酸羟化酶(tyrosine,TH)染色计数多巴胺(DA)神经元。结果饮食治疗1个月后,缺铁饮食组小鼠的三项运动活性均显著高于正常饮食组(均为P<0.01)。6-OHDA毁损A11核团可显著增加小鼠的各项运动活性(均为P<0.01)。D2受体激动剂ropinirole可以使小鼠增高的运动活性下降到基线水平。6-OHDA毁损可致A11区域DA能神经元明显减少。结论对C57BL/6雄性小鼠在缺铁饮食基础上进行A11区域的6-OHDA毁损建立的模型,能较好的模拟RLS的临床征象,可用作RLS的动物模型。展开更多
Objective We aimed to evaluate the expression pattern of the genes BIM, BCL-6, and c-MYC in adult patients at initial diagnosis of B-cell acute lymphoblastic leukemia(B-ALL).Methods Relative m RNA levels of BIM, BCL-6...Objective We aimed to evaluate the expression pattern of the genes BIM, BCL-6, and c-MYC in adult patients at initial diagnosis of B-cell acute lymphoblastic leukemia(B-ALL).Methods Relative m RNA levels of BIM, BCL-6, and c-MYC in peripheral blood mononuclear cells(PBMCs) from B-ALL patients were determined by quantitative reverse-transcription polymerase chain reaction(q RT-PCR) using SYBR Green dye. PBMCs from healthy volunteers served as a control. GAPDH was used as a reference gene.Results Relative expression of BIM, BCL-6, and c-MYC m RNA in B-ALL patients was significantly lower than in healthy controls(P < 0.05). Furthermore, this result was observed for both newly diagnosed B-ALL patients and those incomplete remission(CR)(P < 0.05). There were no statistically significant differences in the expression levels of BIM, BCL-6, and c-MYC between these B-ALL patient groups(P > 0.05). Spearman's rank correlation analyses revealed the expression level of BIM to be positively correlated with that of BCL-6 in B-ALL patients.Conclusion Expression of the genes BIM, BCL-6, and c-MYC is decreased in adult B-ALL patients. Moreover, the expression pattern of these genes may be similar in such patients at initial diagnosis and following CR. The expression characteristics of BIM, BCL-6, and c-MYC may constitute useful markers for the diagnosis of adult B-ALL.展开更多
目的探讨全反式维甲酸(ATRA)对高糖环境下正常人肾小管上皮细胞(HK-2细胞)炎症因子表达的影响及其可能机制。方法将体外培养的HK-2细胞随机分为7组:空白对照组,高糖组(D-葡萄糖30 mmol·L^(-1)),高渗组(甘露醇24.5 mmol·L^(-1)...目的探讨全反式维甲酸(ATRA)对高糖环境下正常人肾小管上皮细胞(HK-2细胞)炎症因子表达的影响及其可能机制。方法将体外培养的HK-2细胞随机分为7组:空白对照组,高糖组(D-葡萄糖30 mmol·L^(-1)),高渗组(甘露醇24.5 mmol·L^(-1)),ATRA干预组[包括高糖+低浓度ATRA组(ATRA 10-7mol·L^(-1))、高糖+中浓度ATRA组(ATRA 10-6mol·L^(-1))、高糖+高浓度ATRA组(ATRA 10-5mol·L^(-1))],Rho激酶抑制药(Y27632)干预组[高糖+Y27632(Y27632为30μmol·L^(-1))],均干预48 h。逆转录-聚合酶链反应(RT-PCR)法检测细胞Rho A mRNA、ROCK1 mRNA表达水平,酶联免疫吸附法(ELISA)检测HK-2细胞白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)变化。结果 RT-PCR结果显示,空白对照组与高渗组Rho A mRNA、ROCK1 mRNA表达差异无统计学意义(P>0.05);高糖组Rho A mRNA、ROCK1 mRNA表达较空白对照组、高渗组显著升高(P<0.05);ATRA各干预组Rho A mRNA、ROCK1 mRNA表达较高糖组显著减少(P<0.05),且呈现ATRA浓度依赖性;Y27632干预组Rho A mRNA表达与高糖组差异无统计学意义,ROCK1mRNA表达显著减少(P<0.05)。Person直线相关分析显示,高糖组及ATRA干预组Rho A mRNA与ROCK1 mRNA表达呈正相关。ELISA检测结果示空白对照组与高渗组表达IL-6、TNF-α无明显差异(P>0.05);高糖组表达IL-6、TNF-α较空白对照组明显升高(P<0.05);ATRA或Y27632干预后,IL-6、TNF-α表达明显减少(P<0.05)。结论 ATRA可抑制高糖环境下HK-2细胞IL-6、TNF-α表达,其机制可能与抑制Rho A/ROCK信号通路有关。展开更多
基金Supported by the gants of the Guangdong Province Key Foundation of Science and Technology Program(No.2009B0507000029)the Major Research Plan of the National Natural Science Foundation of China(cultivating project,No.91129720)+1 种基金the Guangdong Science&Technology Project(Nos.2012B050600023 and 2015A050502029)a Grant from the Overseas Chinese Affairs Office of the State Council Key Discipline Construction Fund(No.51205002)
文摘Objective We aimed to evaluate the expression pattern of the genes BIM, BCL-6, and c-MYC in adult patients at initial diagnosis of B-cell acute lymphoblastic leukemia(B-ALL).Methods Relative m RNA levels of BIM, BCL-6, and c-MYC in peripheral blood mononuclear cells(PBMCs) from B-ALL patients were determined by quantitative reverse-transcription polymerase chain reaction(q RT-PCR) using SYBR Green dye. PBMCs from healthy volunteers served as a control. GAPDH was used as a reference gene.Results Relative expression of BIM, BCL-6, and c-MYC m RNA in B-ALL patients was significantly lower than in healthy controls(P < 0.05). Furthermore, this result was observed for both newly diagnosed B-ALL patients and those incomplete remission(CR)(P < 0.05). There were no statistically significant differences in the expression levels of BIM, BCL-6, and c-MYC between these B-ALL patient groups(P > 0.05). Spearman's rank correlation analyses revealed the expression level of BIM to be positively correlated with that of BCL-6 in B-ALL patients.Conclusion Expression of the genes BIM, BCL-6, and c-MYC is decreased in adult B-ALL patients. Moreover, the expression pattern of these genes may be similar in such patients at initial diagnosis and following CR. The expression characteristics of BIM, BCL-6, and c-MYC may constitute useful markers for the diagnosis of adult B-ALL.
文摘目的探讨全反式维甲酸(ATRA)对高糖环境下正常人肾小管上皮细胞(HK-2细胞)炎症因子表达的影响及其可能机制。方法将体外培养的HK-2细胞随机分为7组:空白对照组,高糖组(D-葡萄糖30 mmol·L^(-1)),高渗组(甘露醇24.5 mmol·L^(-1)),ATRA干预组[包括高糖+低浓度ATRA组(ATRA 10-7mol·L^(-1))、高糖+中浓度ATRA组(ATRA 10-6mol·L^(-1))、高糖+高浓度ATRA组(ATRA 10-5mol·L^(-1))],Rho激酶抑制药(Y27632)干预组[高糖+Y27632(Y27632为30μmol·L^(-1))],均干预48 h。逆转录-聚合酶链反应(RT-PCR)法检测细胞Rho A mRNA、ROCK1 mRNA表达水平,酶联免疫吸附法(ELISA)检测HK-2细胞白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)变化。结果 RT-PCR结果显示,空白对照组与高渗组Rho A mRNA、ROCK1 mRNA表达差异无统计学意义(P>0.05);高糖组Rho A mRNA、ROCK1 mRNA表达较空白对照组、高渗组显著升高(P<0.05);ATRA各干预组Rho A mRNA、ROCK1 mRNA表达较高糖组显著减少(P<0.05),且呈现ATRA浓度依赖性;Y27632干预组Rho A mRNA表达与高糖组差异无统计学意义,ROCK1mRNA表达显著减少(P<0.05)。Person直线相关分析显示,高糖组及ATRA干预组Rho A mRNA与ROCK1 mRNA表达呈正相关。ELISA检测结果示空白对照组与高渗组表达IL-6、TNF-α无明显差异(P>0.05);高糖组表达IL-6、TNF-α较空白对照组明显升高(P<0.05);ATRA或Y27632干预后,IL-6、TNF-α表达明显减少(P<0.05)。结论 ATRA可抑制高糖环境下HK-2细胞IL-6、TNF-α表达,其机制可能与抑制Rho A/ROCK信号通路有关。
