乳腺癌组织中TRβ1基因表达及临床意义

目的:探讨甲状腺素受体β1(TRβ1)在乳腺癌组织中的表达及临床意义。方法:运用半定量逆转录聚合酶链反应(RT-PCR)技术检测40例乳腺癌及10例正常乳腺组织中TRβ1基因表达情况。结果:TRβ1基因在10例正常乳腺组织中全部表达,而TRβ1基因在40例乳腺癌组织中mRNA表达下降34例(85%)。乳腺癌组织中TRβ1基因表达明显低于正常乳腺组织(P<0.05)。不同年龄的患者TRβ1基因mRNA的表达差异无统计学意义(P>0.05),在不同临床分期、淋巴有无结转移、ER的阳性与阴性表达及肿瘤大小不同的患者中,TRβ1基因mRNA的表达差异有统计学意义(P<0.05)。结论:TRβ1在乳腺癌的浸润和转移方面起重要作用,可成为评估乳腺癌严重程度的新指标。     

大鼠心肌梗死后心肌高迁移率族蛋白HMGB1的时程变化

目的 探讨大鼠心肌梗死模型后不同时间高迁移率族蛋白(HMGB1)的时程变化.方法 结扎SD大鼠左冠状动脉前降支造成左室大面积心梗,分别于术后1、2、4、8周测心功能判断造模是否成功后开胸取心脏.分别运用实时荧光定量PCR和Western蛋白印迹技术观察心肌梗死后不同时间点HMGB1在mRNA和蛋白水平的表达变化.结果 心功能检测提示造模成功,心梗大鼠术后早期(1 w)HMGB1 mRNA表达上调(P＜0.01),而心梗后期(8周)则表达显著减少(P＜0.01).与mRNA水平变化类似,HMGB1蛋白水平在心肌梗死组大鼠术后早期(1～2周)表达水平增加(P＜0.01),而心梗后期(8周)则显著下调(P＜0.05).结论 HMGB1作为炎症调节因子,在心梗早期对心肌的炎性反应进行调控;并在心梗后期参与调节基因转录,进行心肌修复.在心梗的不同阶段对HMGB1的表达进行干预有望减少心梗并发症,改善预后.提高患者长期存活率.     

Forecasting the Post-Pandemic Effects of the SARS-CoV-2 Virus Using the Bullwhip Phenomenon Alongside Use of Nanosensors for Disease Containment and Cure

The COVID-19 pandemic has the tendency to affect various organizational paradigm alterations, which civilization hasyet to fully comprehend. Personal to professional, individual to corporate, and across most industries, the spectrum of transformations is vast. Economically, the globe has never been more intertwined, and it has never been subjected to such widespread disruption. While many people have felt and acknowledged the pandemic’s short-term repercussions, the resultant paradigm alterations will certainly have long-term consequences with an unknown range and severity. This review paper aims at acknowledging various approaches for the prevention, detection, and diagnosis of the SARS-CoV-2 virus using nanomaterials as a base material. A nanostructure is a material classification based on dimensionality, in proportion to the characteristic diameter and surface area. Nanoparticles, quantum dots, nanowires (NW), carbon nanotubes (CNT), thin films, and nanocomposites are some examples of various dimensions, each acting as a single unit, in terms of transport capacities. Top-down and bottom-up techniques are used to fabricate nanomaterials. The large surface-to-volume ratio of nanomaterials allows one to create extremely sensitive charge or field sensors (electrical sensors, chemical sensors, explosives detection, optical sensors, and gas sensing applications). Nanowires have potential applications in information and communication technologies, low-energy lightning, and medical sensors. Carbon nanotubes have the best environmental stability, electrical characteristics, and surface-to-volume ratio of any nanomaterial, making them ideal for bio-sensing applications. Traditional commercially available techniques have focused on clinical manifestations, as well as molecular and serological detection equipment that can identify the SARS-CoV-2 virus. Scientists are expressing a lot of interest in developing a portable and easy-to-use COVID-19 detection tool. Several unique methodologies and approaches are being investigated as feasible advanced systems capable of meeting the demands. This review article attempts to emphasize the pandemic’s aftereffects, utilising the notion of the bullwhip phenomenon’s short-term and long-term effects, and it specifies the use of nanomaterials and nanosensors for detection, prevention, diagnosis, and therapy in connection to the SARS-CoV-2.     

γ-氨基丁酸受体γ1亚基在大鼠前庭终器的表达

目的：研究γ-氨基丁酸受体γ1亚基在大鼠前庭终器的表达。方法；运用RT-PCR技术检测大鼠前庭终器编码GABAA受体亚基因表达。以大鼠脑组织RNA为阳性对照。结果：扩增出标志GABAA受体基因表达的PCR产物。结论:GABA受体γ1亚基在大鼠前庭终器有表达，为证明GABA是前庭系统重要神经递质之一提供了支持。     

子宫内膜异位症患者异位及在位内膜的L-plastin与雌激素受体的表达及相关性研究

目的:探讨子宫内膜异位症(内异症)患者L-plastin与雌激素受体的表达及二者的相关性在内异症发生、发展中的意义。方法:采用RT-PCR方法及免疫组化S-P法检测L-plastin及雌激素受体在内异症患者的在位和异位内膜及正常子宫内膜中的表达,并对二者表达的相关性进行分析。结果:L-plastin在内异症患者在位及异位内膜中的表达水平均高于正常子宫内膜(P<0.05),且其在异位内膜中的表达水平高于在位内膜(P<0.05);雌激素受体在内异症患者在位及异位子宫内膜中的表达强于正常子宫内膜(P<0.05),且其在在位内膜中的表达强于异位内膜(P<0.05)。结论:L-plastin和雌激素受体在子宫内膜异位症患者在位及异位内膜中均表达增高,且呈正相关。L-plastin可能通过与ER结合在子宫内膜异位症发生、发展中发挥作用。L-plastin可能是与雌激素代谢相关的子宫内膜异位症特异性靶基因。     

The total flavones from Semen cuscutae reverse the reduction of testosterone level and the expression of androgen receptor gene in kidney-yang deficient mice

OBJECTIVE: To discover the effect of the total flavones from Semen cuscutae (TFSC) on the kidney-yang deficiency male mouse, especially on hormone levels and the androgen receptor (AR) mRNA and protein level in the kidney and testicle. METHODS: ICR male mouse were separated into six groups, and, except for the normal group, hydrocortisone was injected intraperitoneally to make the kidney-yang deficiency. The groups were then treated with TFSC, methyltestosterone and Jinkui Shenqi Wan, except for the normal group and control group. 14 days after administering, testosterone levels in the total serum were analysed by radioimmunoassay, AR mRNA levels measured by real time RT-PCR and protein levels by immunohistochemistry. RESULTS: The control group had the lowest testosterone level, AR mRNA level and protein level, and the TFSC can reverse the reduction of testosterone level, AR mRNA level and protein level induced by the hydrocortisone. CONCLUSIONS: This is the first study to demonstrate that TFSC treatment may reverse kidney-yang deficiency symptoms by restoring the levels of testosterone and AR mRNA and protein expression in the kidney and testicle.     

子宫内膜异位症与nm23-H1基因之间关系的研究

目的　研究nm2 3 H1基因在子宫内膜异位症发生中的作用。方法　采用免疫组化方法研究 2 5例子宫内膜异位症患者的病理组织和 2 2例正常子宫内膜组织中的nm2 3 H1蛋白的表达情况 ;用RT PCR方法研究 2 5例子宫内膜异位症患者的病理组织中nm2 3 H1基因的mRNA的表达情况。结果　子宫内膜异位症组中的nm2 3 H1蛋白表达水平明显低于对照组 (P <0 .0 1) ,子宫内膜异位症组中 ,nm2 3 H1蛋白表达与mRNA表达的结果无显著性差异 (P >0 .0 5 )。结论　nm2 3 H1基因在子宫内膜异位症的发生发展中起一定的作用。