羟基红花黄色素A对激素诱导骨髓间充质干细胞成骨分化的影响

目的：观察羟基红花黄色素A（HSYA）对激素诱导兔骨髓间充质干细胞（BMSCs）内成骨标志物碱性磷酸酶、Cbfαl及Ⅰ型胶原表达的影响,探讨其防治激素性股骨头缺血性坏死的作用机制。方法：健康成年新西兰大白兔15只,体重0.9～1.3 kg,腹腔注射麻醉后,无菌条件下作胫骨和髂前上棘骨髓腔穿刺抽取骨髓血,分离出BMSCs,体外培养并传代,取第3代生长状态良好的BMSCs随机分为空白组,模型组及羟基红花黄色素A低、中、高剂量组。模型组用大剂量地塞米松诱导BMSCs成脂分化,抑制其成骨分化;羟基红花黄色素A低、中、高剂量组加入地塞米松作用的同时给予羟基红花黄色素A干预;空白组无特殊处理。1周后检测各组细胞内成骨标志物碱性磷酸酶活性、Cbfαl及Ⅰ型胶原 mRNA的表达。结果：模型组兔BMSCs内碱性磷酸酶活性较空白组明显下降（P<0.01）,Cbfαl及Ⅰ型胶原 mRNA的表达也明显降低（P<0.01）,而HSYA各组较模型组均有明显升高（P<0.05或P<0.01）.结论：羟基红花黄色素A治疗激素性股骨头缺血坏死的机制可能与对抗激素诱导下的BMSCs成骨分化减少有关。     

基于物联网及云计算的脉诊信息可视化系统结构设计与研究

初步建成脉诊信息系统,以物联网技术为基础,利用传感器设备实时检测脉象数据并通过无线网络技术传送到医疗数据中心,依托大数据存储与处理平台,实现对传感器设备、计算、存储数据、网络等资源统一管理,经试运行效果良好。     

肾阴虚证和肾阳虚证基因表达谱的比较研究

目的 探讨肾阴虚证和肾阳虚证基因表达谱的异同. 方法 选取IgA肾病以及亚健康状态肾阴虚证和肾阳虚证患者作为研究对象,以健康人作为正常对照组;应用基因芯片技术,研究肾阴虚证和肾阳虚证的基因表达谱;结合MAS软件对差异表达基因进行分析. 结果 肾阴虚证组和肾阳虚证组基因表达谱存在明显的差异,全部的差异表达基因有145条;肾阴虚证组、肾阳虚证组与正常对照组比较,二者共同的差异表达基因有9条. 结论 基因芯片是研究中医证候相关基因的比较理想的一种技术方法;肾阴虚证与肾阳虚证差异表达基因存在明显不同,提示可为中医辨证分型提供科学依据.     

Electroacupuncture at “Zusanli(ST36)” alleviates 5-fluorouracil-induced renal injury in colorectal cancer-bearing mice by exerting effects on oxidative stress,inflammatory responses,and cell apoptosis: 电针“足三里”减轻大肠癌荷瘤小鼠5-FU化疗后肾损伤及其氧化应激、炎症反应和细胞凋亡的研究

ObjectiveTo observe the effect of electroacupuncture at “Zusanli (ST36)” on 5-fluorouracil (5-FU)-induced renal injury in colorectal cancer-bearing mice, and to further investigate its effects on oxidative stress, inflammatory responses, and cell apoptosis in mouse renal tissue.MethodsThirty-five male BALB/c mice were randomly divided into five groups of seven mice each, namely the control, CT26, 5-FU, sham point (SP), and ST36 (which received EA at the “ST36”) groups. With the exception of the control group, each group was subjected to establishment of a subcutaneous implantation tumor model using the murine CT26 colorectal cancer cell line. Once the models were successfully established, the 5-FU, SP, and ST36 groups received 5-FU injection solution intraperitoneally at a dose of 5 mg/mL once every three days over a 21-day period. Mice in the SP and ST36 groups additionally received an EA intervention after each intraperitoneal 5-FU injection. EA were performed on mice of the SP group at bilateral sham acupoints and on mice of the ST36 group at the bilateral “ST36” using the continuous wave mode at a frequency of 2 Hz for a duration of 5 min, intervention was administered once every two days for a duration of 21 days. Samples were collected from the mice at the end of the experiment. The pathological morphology of the renal tissue was observed using hematoxylin and eosin (HE) staining; the contents of creatine (Cre), blood urea nitrogen (BUN) and malondialdehyde (MDA), and superoxide dismutase (SOD) activity were measured using biochemical assays; the expression and nuclear translocation of nuclear factor kappa B p65 subunit (NF-κB p65) were measured by immunofluorescence; the expression levels of tumor necrosis factor alpha (TNF-α), interleukin-6 (IL-6), and interleukin-1β (IL-1β) in serum were measured by ELISA; cell apoptosis in renal tissue was detected using the TUNEL assay; and the expression levels of the anti-B-cell lymphoma/leukemia 2 (Bcl-2), Bcl-2-associated X protein (Bax), cleaved caspase-3, cleaved caspase-9, and cytochrome C (cyt c) in renal tissue were measured by Western blotting.ResultsCompared with the control group, mice of the CT26 group showed a significant increase in serum Cre content (P<0.01), but the difference in BUN content was not statistically significant (P>0.05). HE staining of renal tissue revealed clear structures with normal glomerular and renal tubular morphology. SOD activity was decreased (P<0.01); MDA content was increased, but the increase was not statistically significant (P>0.05). Differences in NF-κB p65 protein expression in the cytoplasm of renal tissue and serum levels of TNF-α, IL-6, and IL-1β were not statistically significant (all P>0.05). Results of immunofluorescent TUNEL staining indicated an absence of significant cell apoptosis. In the renal tissue, Bcl-2 protein expression was slightly increased (P<0.05), and the expression levels of Bax (P<0.01), cleaved caspase-3 (P>0.05), cleaved caspase-9 (P<0.01), and cyt c (P>0.05) were increased. Compared with the CT26 group, mice of the 5-FU group exhibited an increase in Cre (P<0.01) and BUN (P<0.05) content. HE staining of renal tissue revealed the presence of glomerular atrophy and dilated Bowman's capsular spaces. SOD activity was significantly decreased (P<0.01), while the increase of MDA content was not significant (P>0.05). The expression of NF-κB p65 in the nucleus and serum TNF-α, IL-6, and IL-1β levels showed significant increases (P<0.05). The cell apoptosis level was significantly increased. The protein expression of Bcl-2 (P<0.05), Bax (P<0.01), cleaved caspase-9 (P<0.01), and cyt c (P<0.05) was significantly increased. Compared with the 5-FU group, the ST36 group showed decreased serum Cre and BUN levels (both P<0.01). HE staining of renal tissue showed less renal tissue injury and less dilation of renal capsular cavities. SOD activity was significantly higher (P<0.01), while MDA content was lower (P<0.05). Nuclear expression of NF-κB p65 and serum TNF-α (P<0.05), IL-6 (P<0.05), and IL-1β (P<0.01) levels were lower. The cell apoptosis level was decreased relative to the 5-FU group. Bcl-2 protein expression was significantly increased (P<0.01), while the protein expression levels of Bax (P<0.01), cleaved caspase-3 (P<0.01), cleaved caspase-9 (P<0.01), and cyt c (P<0.05) also were reduced.ConclusionEA at “ST36” attenuated 5-FU-induced renal injury in colorectal cancer-bearing mice. The mechanism may be related to the regulation of renal oxidative stress, alleviation of inflammatory responses, and inhibition of cell apoptosis.