Molecular Cloning,Genomic Organization and Functional Analysis of the Ribosomal Protein S30(RPS30) Gene from Arachis hypogaea

The ribosomal proteins are crucial for the maintenance of ribosomal translational efficiency and fidelity.In the study,we characterized the ribosomal protein S30(RPS30)gene from Arachis hypogaea that has been isolated through Genefishing analysis during defense responses to Ralstonia solanacearum.The cDNA of RPS 30 contained a 189 base pair(bp)open-reading frame encoding 62 amino acids.The genomic DNA consists of 272 bp containing two exons and one 83 bp intron.The RPS 30 mRNA transcript was mainly expressed in roots and leaves.The expression level of the RPS 30 mRNA transcripts was up-regulated sharply 6 h after bacterial challenge and was 12 times greater than that of the control group.The phylogenetic analysis for genes encoding proteins showed that RPS30 were conserved within dicotyledonous and monocotyledonous plants.d S extremely exceeded d N in all branches of the tree(d N/d S<1.0),indicating that functional constraint have acted on RPS 30 throughout evolution.

Overexpression of 14-3-3 protein protects pheochromocytoma cells against 1-methyl-4-phenylpyridinium toxicity

Objective To investigate the effects of 14-3-3 protein overexpression on the 1-methyl-4-phenylpyridinium （MPP^＋） induced pheochromocytoma （PC12） cell death and the potential mechanisms. Methods pcDNA3.1（＋）-14-3-3 plasmids, which could be expressed in mammalian cell, were constructed and transfected into PC 12 cells with Lipofectamine 2000. The expression of 14-3-3 protein, Bcl-2 protein, and BAD protein were determined by western blot. 3-（4,5- dimethylthiazol-2-yl）-2,5-diphenyltetrazolium bromide （MTT） assay, microplate reader, and flow cytometric analysis were used to measure cell viability, the caspase activity, and apoptotic ratio respectively. Results （1） The expression of 14-3-3 protein increased significantly three weeks after pcDNA3.1（＋）-14-3-3 plasmids transfected into PC 12 cells. （2） MPP^＋ caused a decrease of cell viability in a dose-dependent manner. At 100μmol/L MPP^＋, cell viability reduced approximately 50%. （3） The caspase activity increased along with the MPP^＋ concentrations rising and reached its maximum value （0.34 μmol/mg protein） at 100 μmol/L MPP＊. However caspase activity decreased significantly when the MPP^＋ concentration exceeded 100 μmol/L. （4） Overexpression of 14-3-3 protein decreased the apoptosis ratio of PC 12 cells treated with 100μmol/L MPP^＋ from 26.5% to 8.6%. （5） Bcl-2 protein tended to decrease but BAD protein tended to increase after treatment of PC 12 cells with 100 μmol/L MPP^＋. Overexpression of 14-3-3 protein significantly increased the cellular level of Bcl-2 protein and decreased that of BAD protein. Conclusion Overexpression of 14-3-3 protein may reduce MPP^＋-induced apoptotic cell death in PC12 cells by up-regulating the Bcl-2 expression and down-regulating the BAD expression. These results may provide a promising target for treatment of Parkinson＇s disease.

The intracellular mechanism of alpha-fetoprotein promoting the proliferation of NIH 3T3 cells

AIM: The existence and properties of alpha-fetoprotein (AFP) receptor on the surface of NIH 3T3 cells and the effects of AFP on cellular signal transduction pathway were investigated. METHODS: The effect of AFP on the proliferation of NIH 3T3 cells was measured by incorporation of 3H-TdR. Receptor-binding assay of 125I-AFP was performed to detect the properties of AFP receptor in NIH 3T3 cells. The influences of AFP on the [cAMP]i and the activities of protein kinase A (PKA) were determined. Western blot was used to detect the change of K-ras P21 protein expression. RESULTS: The proliferation of NIH 3T3 cells treated with 0-80 mg/L of AFP was significantly enhanced. The Scatchard analysis indicated that there were two classes of binding sites with KD of 2.722 x 10(-9)M (Bmax=12810 sites per cell) and 8.931 x 10(-8)M (Bmax=119700 sites per cell) respectively. In the presence of AFP (20 mg/L), the content of cAMP and activities of PKA were significantly elevated . The level of K-ras P21 protein was upregulated by AFP at the concentration of 20 mg/L. The monoclonal antibody against AFP could reverse the effects of AFP on the cAMP content, PKA activity and the expression of K-ras p21 gene. CONCLUSION: The effect of AFP on the cell proliferation was achieved by binding its receptor to trigger the signal transduction pathway of cAMP-PKA and alter the expression of K- ras p21 gene.

Role of microRNA-21 in uveal melanoma cell invasion and metastasis by regulating p53 and its downstream protein

AIM： To reveal the insight mechanism of liver metastasis in uveal melanoma, we investigated cell functions of microRNA-21 in three different uveal melanoma cell lines and analyze the relationship of target gene p53 and its downstream targets which been found significant expression in our previous study.METHODS： Quantitative real-time polymerase chain reaction （qRT-PCR） was used to detect microRNA-21 expression in normal uveal tissue and uveal melanoma cell lines. Lenti-virus expression system was used to construct OCM-1, MuM-2B and M619 cell line with stable overexpression and inhibition of microRNA-21. In vitro cell function tests such as cell proliferation, cell apoptosis, cell circle and abilities of migration and invasion were examined by MTT, BrdU assay, flow cytometry, transwell assay and Matrigel invasion assay respectively. The target gene was predicted by bioinformatics and confirmed by using a dual luciferase reporter assay. The expression of p53 and its suspected downstream targets LIM and SH3 protein 1 （LASP1） and Glutathione S Transferase pi （GST-Pi） were determined by qRT-PCR in mRNA level and western blotting analysis in protein level. Finally, the effect of microRNA-21 in a xenograft tumor model was assessed in four-week-old BALB/c nude mice. RESULTS： Compared to normal uveal melanoma, expressions of microRNA-21 were significantly higher in uveal melanoma cell lines. Overexpression of microRNA-21 promoted proliferation, migration, and invasion of OCM-1, M619 and MuM-2B cells, while inhibition of microRNA-21 reveal opposite effects. Wild type p53 was identified as a target gene of microRNA-21-3p, and proved by dual luciferase reporter assay. Up-regulated microRNA-21 inhibited the expression of wild type p53 gene, and the increased expression of LASP1 in mRNA level and protein level, while down-regulated microRNA-21 presented opposite way. However, GST-pi showed the potential pattern as expected, but relative mRNA level showed no statistically significant difference in OCM-1 cells. Furthermore, the mRNA expression of GST-pi was decreased in microRNA-21 overexpressing MuM-2B, and increased in M619 cells with inhibition of microRNA-21. In vivo, inhibition of microRNA-21 reduced tumor growth with statistically significant difference.CONCLUSION： These findings provide novel insight into molecular etiology of microRNA-21 in uveal melanoma cell lines, and suggest that microRNA-21 might be a potential candidate for the diagnosis and prognostic factor of human uveal melanoma in future.

miR-15b-5p targeting amyloid precursor protein is involved in the anti-amyloid eflect of curcumin in swAPP695-HEK293 cells

Curcumin exerts a neuroprotective effect on Alzheimer’s disease;however,it is not known whether microRNAs are involved in this protective effect.This study was conducted using swAPP695-HEK293 cells as an Alzheimer’s disease cell model.swAPP695-HEK293 cells were treated with 0,0.5,1,2,5,and 10μM curcumin for 24 hours.The changes in miR-15b-5p,miR-19a-3p,miR-195-5p,miR-101-3p,miR-216b-5p,miR-16-5p and miR-185-5p expression were assessed by real-time quantitative polymerase chain reaction.The mRNA and protein levels of amyloid precursor protein,amyloid-β40 and amyloid-β42 were evaluated by quantitative real-time polymerase chain reaction,western blot assays and enzyme-linked immunosorbent assays.swAPP695-HEK293 cells were transfected with miR-15b-5p mimic,or treated with 1μM curcumin 24 hours before miR-15b-5p inhibitor transfection.The effects of curcumin on amyloid precursor protein,amyloid-β40 and amyloid-β42 levels were evaluated by western blot assays and enzyme-linked immunosorbent assay.Luciferase assays were used to analyze the interaction between miR-15b-5p and the 3′-untranslated region of amyloid precursor protein.The results show that amyloid precursor protein and amyloid-βexpression were enhanced in swAPP695-HEK293 cells compared with HEK293 parental cells.Curcumin suppressed the expression of amyloid precursor protein and amyloid-βand up-regulated the expression of miR-15b-5p in swAPP695-HEK293 cells.In addition,we found a negative association of miR-15b-5p expression with amyloid precursor protein and amyloid-βlevels in the curcumin-treated cells.Luciferase assays revealed that miR-15b-5p impaired the luciferase activity of the plasmid harboring the 3′-untranslated region of amyloid precursor protein.These findings indicate that curcumin down-regulates the expression of amyloid precursor protein and amyloid-βin swAPP695-HEK293 cells,which was partially mediated by miR-15b-5p via targeting of the 3′-untranslated region of amyloid precursor protein.

Role of Tyro3, Axl, and Mer Receptors and Their Ligands (Gas6, and Protein S) in Patients with Hepatocellular Carcinoma

The Tyro3, Axl and Mer (TAM) receptor tyrosine kinases are activated by endogenous ligands, protein S1 (PROS1) and growth arrest-specific gene 6 (Gas6), and those have important effects on cell biology. These receptors (Rs) can be shad from the cell membrane and their soluble(s) forms can be found in plasma. We investigated the fluctuation and interactive role of sTAMRs and its ligands in patients with hepatocellular carcinoma (HCC), hepatitis groups, and healthy normal adult controls (NC). The measurement cases were 45 patients with HCC group (stage 1 in 4, stage 2 in 8, stage 3 in 16, and stage 4 in 17), 4 patients with fulminant hepatitis (FH), 14 patients with acute hepatitis (AH), 10 patients with chronic hepatitis (CH), 16 patients with liver cirrhosis (LC), and 20 NCs matched by age. Plasma levels of three sTAMRs and their ligands were measured by ELISA. In comparison with NCs, Gas6, des-γ-carboxy Gas6, and sTAMRs levels were significantly higher in HCC patients, but free PROS1 levels were significantly lower. The sTyro3 and sAxl levels peaked HCC stages 2 and 3 respectively, and gradually decreased afterwards while maintaining high levels. sMer levels increased with the progression of HCC. Gas6 and des-γ-carboxy Gas6 levels gradually increased, and PROS1 levels decreased with the progression of HCC. Gas6 levels were positively correlated with sAxl levels, whereas sMer levels were negatively correlated with free PROS1 levels. sTAMRs and Gas6 levels increased in parallel to the progression of HCC fibrosis. Through the progression of HCC, Axl played the major role in TAMRs activation. However, sTYro3 continued increasing rapidly from the early stage, and that of Mer increased throughout the progression. Roles of Axl may be changed in Mer, because des-γ-carboxy Gas6 levels increasing with Gas6 in the advanced stage of HCC cannot send a signal to Axl.

MPTP对小鼠多巴胺能神经元细胞MN9D凋亡的影响

目的:探讨MPTP对小鼠多巴胺能神经元细胞MN9D凋亡的影响及其可能机制。方法:MN9D细胞分别以0、1μmol/L MPTP处理(对照组和MPTP组),或分别以pcDNA4、pcDNA4-BACE2转染(对照组和BACE2组),采用Western blot法检测BACE2、Cleaved Caspase-3和内源性DSG2蛋白的表达。MN9D细胞分为DSG2组、DSG2+BACE2组和DSG2+BACE2+BACE抑制剂组,分别转染pENTER-DSG2+pcDNA4、pENTER-DSG2+pcDNA4-BACE2以及转染pENTER-DSG2+pcDNA4-BACE2后用1μmol/L的BACE抑制剂处理,采用Western blot法检测DSG2全长以及DSG2各片段的表达。结果:与对照组相比,MPTP组中BACE2及Cleaved Caspase-3表达均上升(P<0.05);与对照组相比,BACE2组Cleaved Caspase-3表达增加,内源性DSG2表达减少(P<0.05)。与DSG2组相比,DSG2+BACE2组中全长DSG2表达下降,DSG2羧基末端片段以及胞外DSG2氨基末端片段均增多(P<0.05),而DSG2+BACE2+BACE抑制剂组中全长DSG2及各DSG2片段的表达与DSG2组相似(P>0.05)。结论:MPTP可通过上调BACE2促进MN9D细胞凋亡,其机制可能与BACE2对DSG2的剪切有关;BACE2和DSG2可能参与了帕金森病的发病。

A novel mechanism of PHB2-mediated mitophagy participating in the development of Parkinson's disease

Endoplasmic reticulum stress and mitochondrial dysfunction play important roles in Parkinson s disease,but the regulato ry mechanism remains elusive.Prohibitin-2(PHB2)is a newly discove red autophagy receptor in the mitochondrial inner membrane,and its role in Parkinson’s disease remains unclear.Protein kinase R(PKR)-like endoplasmic reticulum kinase(PERK)is a factor that regulates cell fate during endoplasmic reticulum stress.Parkin is regulated by PERK and is a target of the unfolded protein response.It is unclear whether PERK regulates PHB2-mediated mitophagy thro ugh Parkin.In this study,we established a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP)-induced mouse model of Parkinson’s disease.We used adeno-associated virus to knockdown PHB2 expression.Our res ults showed that loss of dopaminergic neurons and motor deficits were aggravated in the MPTP-induced mouse model of Parkinson’s disease.Ove rexpression of PHB2 inhibited these abnormalities.We also established a 1-methyl-4-phenylpyridine(MPP+)-induced SH-SY5Y cell model of Parkinson’s disease.We found that ove rexpression of Parkin increased co-localization of PHB2 and microtubule-associated protein 1 light chain 3,and promoted mitophagy.In addition,MPP+regulated Parkin involvement in PHB2-mediated mitophagy through phosphorylation of PERK.These findings suggest that PHB2 participates in the development of Parkinson’s disease by intera cting with endoplasmic reticulum stress and Parkin.

C1q/肿瘤坏死因子相关蛋白3、脂蛋白相关磷脂酶A2、可溶性髓样细胞触发受体-1对脑血管狭窄患者术后支架内再狭窄预测价值

目的探讨血清补体C1q/肿瘤坏死因子相关蛋白3(CTRP3)、脂蛋白相关磷脂酶A2(Lp-PLA2)、可溶性髓样细胞触发受体-1(sTREM-1)水平在预测脑血管狭窄人群的颅脑动脉支架术后支架内再狭窄(ISR)方面的价值。方法选取2020年5月至2022年6月廊坊市人民医院收治的107例接受颅脑动脉支架成形术的患者。根据患者术后6个月内是否发生ISR分为ISR组(n=26)与NISR组(n=81)。比较两组患者的低密度脂蛋白胆固醇(LDL-C)、支架数量、球囊扩张支架的占比、狭窄程度、残余狭窄程度,以及CTRP3、Lp-PLA2、sTREM-1水平。结果ISR组LDL-C、支架数量、球囊扩张支架的占比、狭窄程度、残余狭窄程度、Lp-PLA2水平、sTREM-1水平均高于NISR组,差异有统计学意义(P<0.05);ISR组CTRP3水平低于NISR组,差异有统计学意义(P<0.05)。支架数量多、狭窄程度及残余狭窄程度高、CTRP3水平降低、Lp-PLA2、LDL-C、sTREM-1水平上升为脑血管狭窄病患血管成形术后出现ISR的独立危险因素(P<0.05)。CTRP3、Lp-PLA2、sTREM-1三者联合在脑血管狭窄病患颅脑血管成形术后出现ISR的预测曲线下面积分别为0.840、0.784、0.809、0.899,三者联合预测价值显著高于单一指标。结论CTRP3水平降低,Lp-PLA2、sTREM-1水平升高与脑血管狭窄患者颅脑动脉支架术后发生ISR有关,联合指标检测对脑血管狭窄患者颅脑动脉支架术后发生ISR具有一定预测价值。

核糖体蛋白L34和STAT3表达与宫颈癌临床病理特征及预后的关系

目的探讨核糖体蛋白L34(RPL34)和信号转导和转录激活因子3(STAT3)表达与宫颈癌临床病理特征及预后的关系。方法回顾性收集2019年1月至2022年6月台州市中心医院(台州学院附属医院)手术切除的30例宫颈癌和30例正常宫颈(对照)新鲜组织,以及2017年1月至2022年6月手术切除的76例宫颈癌和40例正常宫颈(对照)组织石蜡标本。采用qRT-PCR法检测新鲜组织中RPL34和STAT3 mRNA相对表达量,采用免疫组化法检测石蜡标本中RPL34和STAT3蛋白表达水平,分析RPL34和STAT3在不同临床病理特征宫颈癌患者中的表达差异,采用Spearman秩相关分析RPL34和STAT3表达的相关性,绘制Kaplan-Meier生存曲线分析RPL34和STAT3表达的预后意义。结果宫颈癌组织中RPL34 mRNA相对表达量和蛋白表达水平均显著低于对照组织(均P<0.01),STAT3 mRNA相对表达量和蛋白表达水平均显著高于对照组织(均P<0.01)。不同国际妇产科学联盟(FIGO)分期、浸润深度及淋巴结转移患者宫颈癌组织中RPL34表达水平比较,差异均有统计学意义(均P<0.01),不同FIGO分期、浸润深度、淋巴结转移及分化程度患者宫颈癌组织中STAT3表达水平比较,差异均有统计学意义(均P<0.01)。宫颈癌组织中RPL34表达和STAT3表达呈显著负相关(P<0.05)。与阴性组患者相比,RPL34阳性组患者术后3年总生存率显著升高(P<0.05),STAT3阳性组患者术后3年总生存率显著降低(P<0.05)。结论宫颈癌组织中RPL34 mRNA和蛋白呈低表达,STAT3 mRNA和蛋白呈高表达,RPL34和STAT3表达与宫颈癌的浸润深度、淋巴结转移等临床病理特征有关,并影响患者3年总生存率。RPL34和STAT3有望成为宫颈癌预后判断的标志物。

梓醇-川芎嗪方调控STAT3改善阿尔茨海默病神经可塑性的机制研究

目的:探讨梓醇-川芎嗪(CT)方对阿尔茨海默病(AD)的作用及转录激活蛋白3(STAT3)的影响。方法:将野生型C57BL/6J小鼠作为对照组(Control),同时将粉样前体蛋白/早老素1双转染小鼠按照随机数字表法随机分为模型组(Model)、低剂量梓醇-川芎嗪方组(CT-L)、高剂量梓醇-川芎嗪方组(CT-H),每组6只。CT-L组和CT-H组分别给予梓醇-川芎嗪方药50、100 mg/kg灌胃处理。Control组和Model组均给予等体积的生理盐水灌胃。每日1次,连续灌胃8周。水迷宫实验探索梓醇-川芎嗪对AD小鼠学习记忆能力的影响,免疫组化检测海马组织中生长相关蛋白43(GAP-43)的表达。海马神经元HT-22细胞分为空白对照组(Control组)、模型组(Model组)、低剂量梓醇-川芎嗪方组(CT-L组)、高剂量梓醇-川芎嗪方组(CT-H组)、STAT3敲除+梓醇-川芎嗪方组(CT+siSTAT3组)。通过Aβ_(1-42)构建体外AD模型,通过转染siSTAT3构建STAT3沉默的神经元模型,并加入高、低剂量的梓醇-川芎嗪方培养24 h,细胞活性检测(CCK-8)检测细胞活力,蛋白免疫印迹法(Western Blot)检测Cyclin D1、Ki-67、B细胞淋巴瘤/白血病-2(Bcl-2)、Bcl-2相关X蛋白(Bax)、NF200、GAP-43、STAT3和磷酸化的STAT3(p-STAT3)蛋白表达水平,Brdu检测细胞增殖,流式细胞术和末端脱氧核苷酸转移酶介导的dUTP缺口末端标记测定法(TUNEL)染色检测细胞凋亡。结果:梓醇-川芎嗪方可以明显缩短APP/PS1双转染小鼠的逃避潜伏期,提高目标象限停留时间和目标象限停留次数,上调海马组织GAP-43的表达,其中高剂量的梓醇-川芎嗪方作用更显著(P<0.05或P<0.01)。梓醇-川芎嗪方可以恢复AD模型细胞的活力和增殖能力,上调Cyclin D1、Ki-67、NF200、GAP-43和STAT3蛋白的表达,下调凋亡相关蛋白Bax的表达并恢复了抗凋亡Bcl-2蛋白的水平,其中高剂量梓醇-川芎嗪方的作用更显著(P<0.05或P<0.01)。而沉默STAT3逆转了梓醇-川芎嗪方对AD神经元增殖和对NF200、GAP-43蛋白表达的促进作用,阻断了梓醇-川芎嗪方对AD神经元的抗凋亡作用(P<0.05或P<0.01)。结论:梓醇-川芎嗪方可以显著改善AD模型小鼠的认知和记忆能力,且其效应具有剂量依赖性。其作用机制可能与促进神经元细胞的增殖,降低凋亡,调控STAT3的表达从而促进神经元的可塑性有关。

七氟醚与丙泊酚复合麻醉对心内直视术患者S-100β蛋白、NSE和认知功能影响的比较

目的 比较七氟醚与丙泊酚复合麻醉对心内直视术患者S-100β蛋白、神经元特异性烯醇化酶（NSE）和认知功能的影响,为减少心内直视术后脑损伤提供参考.方法 择期行心脏二尖瓣置换术患者60例,性别不限,年龄24-63岁,体质指数16.5-25.8 kg/m2,ASA分级Ⅱ或Ⅲ级,随机分为两组（n=30）：七氟醚复合麻醉组（S组）和丙泊酚复合麻醉组（P组）.麻醉诱导：静脉注射咪达唑仑0.05-0.1 mg/kg,依托咪酯0.3-0.5 mg/kg,瑞芬太尼0.5-1 μg/kg,顺苯磺酸阿曲库铵0.15 mg/kg.麻醉维持：S组持续吸入1.0%-3.0%七氟醚（体外循环期间通过体外循环旁路吸入1.0%-3.0%七氟醚）,P组靶控输注2-4 μg/mL丙泊酚;两组均静脉输注瑞芬太尼0.2-0.4 μg/（kg·min）和顺苯磺酸阿曲库铵0.1 mg/（kg·h）至手术结束.于麻醉诱导前（T0）、体外循环开始后30 min（T1）、体外循环结束时（T2）、手术结束时（T3）、术后12 h（T4）及术后24 h（T5）时采集颈内静脉血测定血清S-100β蛋白和NSE浓度,于术前1 d和术后2 d用简易精神状态检查表（MMSE）评估患者的认知功能.结果 与P组比较,S组T1-T4时点血清S-100β蛋白和NSE浓度降低（P〈0.05）,术后2 d时MMSE评分升高（P〈0.05）,术后认知功能障碍（POCD）发生率下降（P〈0.05）.结论 在心内直视术中,与丙泊酚复合麻醉比较,七氟醚复合麻醉可降低血浆S-100β蛋白和NSE浓度,减少术后POCD的发生,可推荐为预防心内直视术后脑损伤的麻醉方法.

苦瓜核糖体失活蛋白诱导HL-60细胞发生凋亡及其分子机制的研究

目的 探讨苦瓜核糖体失活蛋白 (Ribosomalinactivatingprotein ,RIP)诱导HL 60细胞凋亡的活性 ,以及对HL 60细胞Bcl 2、Bax、caspase 3表达变化的影响及其分子机制。方法 以一定浓度苦瓜RIP处理HL 60细胞 2 4～ 72h ,用TUNEL法检测细胞凋亡。运用RT PCR和Westernblot免疫印记法检测Bcl 2、Bax、caspase 3mRNA和蛋白表达的变化。结果 苦瓜RIP在一定作用浓度下可使HL 60细胞发生凋亡 ,且随着作用时间的延长凋亡细胞比例逐渐升高。在此过程中 ,HL 60细胞的caspase 3mRNA的表达及其胞内活性亚单位水平显著升高 (P <0 .0 5 ) ,Bcl 2mRNA表达变化虽不显著 ,但其蛋白水平明显降低 (P <0 .0 5 ) ,与此同时 ,BaxmRNA和蛋白表达均有所上调。结论 在苦瓜RIP诱导的HL 60细胞凋亡中 ,caspase 3发挥了极为重要的作用 ,而Bcl 2和Bax可能通过其表达量的变化。

丁苯酞软胶囊改善帕金森痴呆患者认知功能和日常生活能力的效果及其对相关因子的影响

目的观察丁苯酞软胶囊改善帕金森痴呆(PDD)患者认知功能和日常生活能力的效果。方法 2013年6月—2015年6月湖北医药学院附属十堰市人民医院神经内科收治帕金森痴呆患者84例,按照随机数字表法分为观察组及对照组各42例。2组均予常规治疗,对照组加用盐酸多奈哌齐口服,观察组在对照组基础上加服丁苯酞软胶囊,治疗时间均为12周。观察2组治疗效果;记录2组治疗前后帕金森病评定量表(UPDRS)、简易精神状态量表(MMSE)、蒙特利尔认知评估量表(MoCA)及日常生活能力(ADL)评分;同时测定2组治疗前后血清C-反应蛋白(CRP)、重组人帕金森病蛋白7(PARK7)、神经营养因子-3(NT-3)水平。结果治疗后,观察组总有效率为95.24%,显著高于对照组的76.19%(X^2=6.222,P<0.05);观察组UPDRS总评分低于对照组[(20.32±5.26)分vs.(35.12±5.11)分,P<0.05],而MMSE、MoCA、ADL评分均显著高于对照组[分别为(28.92±4.78)分、(27.89±4.36)分、(75.39±4.58)分和(26.02±5.02)分、(24.12±2.78)分、(62.58±5.78)分],差异均有统计学意义(P<0.05);观察组CRP、PARK7均低于对照组[分别为(3.98±0.36)mg/L、(14.32±2.15)μg/L和(6.35±0.48)mg/L、(25.26±4.63)μg/L],而NT-3水平高于对照组[(32.25±3.78)μg/L vs.(24.98±4.23)μg/L],差异均有统计学意义(P<0.05)。结论丁苯酞软胶囊能有效改善PDD患者肢体功能运动及脑神经功能,可明显降低患者血清CRP、PARK7水平,提高NT-3水平,对PDD具有良好治疗效果,值得临床应用。

肺癌中PI3K/AKT信号通路对Skp2调控机制的研究

目的探讨肺癌中磷脂酰肌醇-3-激酶(PI3K)/AKT信号通路对S期激酶相关蛋白2(Skp2)的调控机制。方法体外培养4种类型肺癌细胞系H460、LK2、H446和A549,经LY294002处理细胞24 h后实时RT-PCR法检测Skp2基因表达变化;Western blot检测E2F1蛋白表达变化。结果实时RT-PCR显示LY294002作用后4种肺肿瘤细胞系中Skp2基因表达均下降;Western blot结果表明在小细胞肺癌、肺鳞癌、大细胞肺癌中E2F1蛋白表达降低,肺腺癌中E2F1蛋白未表达。结论肺癌中PI3K/AKT通路可在转录水平调节Skp2表达,在小细胞肺癌、肺鳞癌、大细胞肺癌中此种调节可能通过转录因子E2F1发挥作用,而肺腺癌中E2F1不参与此种调节。

马铃薯S病毒的分子鉴定与检测

An isolate of PVS,HZ00P1,was obtained from nature infected Solanum tuberosum from Hangzhou,Zhejiang province.It was primarily identified by DAS-ELISA and host reaction tests.3’ end partial sequence of the virus isolate was cloned.Nucleic acid sequence of the cp gene and deduced cp amino acid sequence alignments were compared with 16 other isolates registered in GenBank.The results showed that the 17 PVS isolates were divided into two groups.Among them,two Andean isolates were classified to groupⅡ,HZ00P1 and the other 14 isolates were assigned to groupⅠ.Compared with other PVS isolates in group Ⅰ,PVS HZ00P1 had 93.1%-98.1% and 95.9%-99.3% homologies of nucleotide sequence and deduced amino acid sequence respectively,whereas its similarities to the groupⅡwere 81.4%-81.7% and 93.5%-93.9%.A survey of PVS occurrence in Zhejiang province was achieved by RNA spot hybridization(RSH).Among the 30 samples collected from different areas of the province,26.7% were found to have the infection of PVS.It is concluded that PVS has become a common virus in Zhejiang province.

绞股蓝核糖体失活蛋白家族编码基因的5个cDNA及其下游非编码区

通过3'RACE克隆策略获得绞股蓝(Gynostemma pentaphyllum)核糖体失活蛋白(ribosome-inac-tivating protein,RIP)Gynostemmin的5个cDNA序列gynostemminⅠ￣Ⅴ及其下游非编码区(3'untranslatedregion,3'UTR)。它们的编码区长度除gynostemminⅡ为825bp外,其余均为831bp。其下游非编码区的长度分别为279、174、170、161和171bp。在3'UTR中,gynostemminⅠ比另外4个多了两个小的茎环结构和一富含AU的不稳定子元件,其mRNA的稳定性可能因此受到影响。

益肾活血泄浊方联合陆氏针灸治疗糖尿病肾病Ⅲ期临床疗效观察

目的:研究观察糖尿病肾病Ⅲ期患者在经过益肾活血泄浊方单独和联合陆氏针灸治疗前后患者临床的疗效。方法:采用前瞻性随机对照临床研究的方法,选取2017年1月至2018年12月上海中医药大学附属第七人民医院收治的肾病糖尿病患者90例作为研究对象,按照随机对照的原则分为A组:A组给予西药常规治疗,B组:B组在西药治疗基础上加益气活血泄浊方口服,C组:C组在中西药治疗的基础上加上针灸治疗。3组都以2个月为1个疗程,共治疗3个疗程,观察3组患者治疗前及治疗后2、4、6个月尿微量白蛋白、肾功能(血肌酐、肾小球滤过率、血尿酸),C-反应蛋白、纤维蛋白原、胰岛素抵抗指数)以及炎性细胞因子,评价临床疗效,为中西药联合陆氏针灸内外合治早期糖尿病肾病提供科学依据。结果:经过比较治疗前后的各项指标,A、B、C3组患者治疗后症状均得到了一定的缓解,临床效果比较C组好于B组,B组好于A组,C组患者各项生理指标均改善最明显,效果最显著。结论:中西医联合针灸综合疗法对于治疗早期的糖尿病肾病临床效果更加显著。

反相高效液相色谱法检测大豆蛋白外啡肽的研究

大豆蛋白序列中隐藏着外啡肽β-酪啡肽-3(β-CM-3)的片段,使得大豆肽食品中含有外啡肽β-CM-3成为可能,因此有必要对大豆肽食品进行外啡肽β-CM-3定性和定量的检测。采用反相液相色谱的方法,以β-酪啡肽-3标准品进行了包括分离柱、流动相的选择、柱温、柱压、流速、检测波长和灵敏度等色谱条件的探索,得出检测条件为波长220nm,柱温25℃,进样量10μL,采用等度洗脱,洗脱条件为:含0·1%TFA的14%乙腈溶液。流速0·9mL/min,洗脱时间为60min。该方法的相对标准偏差为4·07%,平均回收率为95·3%,最小检测浓度为0·4μg/mL。对照标准品保留时间和峰面积,得出酸性蛋白酶/Alcalase=4h/2h酶解液中含有目标外啡肽156·41μg/g。

脊髓小脑性共济失调3型/Machado-Joseph病血清NSE与S100B浓度的测定(英文)

目的:探讨脊髓小脑性共济失调3型/Machado-Joseph病(SCA3/MJD)血清神经元特异性烯醇化酶(NSE)、S100B蛋白(S100B)作为神经元损伤/缺失和神经胶质增生的生化标志及其意义。方法:对102例SCA3/MJD患者和性别年龄与之相匹配的100例健康对照者进行血清NSE和S100B浓度的测定,分析其组间差异有无统计学意义及其与年龄、发病年龄、病程、CAG重复次数、国际协作共济失调评估量表(ICARS)评分、共济失调等级量表(SARA)评分的相关性。结果:SCA3/MJD患者组血清NSE和S100B浓度均较健康对照组有不同程度增高[(6.95±2.83)ng/mL与(4.83±1.70)ng/mL,P<0.05;(0.07±0.06)ng/mL与(0.05±0.02)ng/mL,P<0.05]。在SCA3/MJD患者组中,血清NSE浓度分别与年龄、病程、ICARS评分、SARA评分呈正相关;而血清S100B浓度与年龄、发病年龄、病程、ICARS评分、SARA评分无相关。CAG重复次数与不同年龄组的SCA3/MJD患者的血清NSE浓度、血清S100B浓度并无相关。结论:血清NSE可能作为的一种监测SCA3/MJD患者病程进展及评估病情严重程度的生化指标,而血清S100B仅可能作为一种显示SCA3/MJD患者脑损伤的潜在的生化指标。