目的 研究薏苡仁水提液對受輻射小鼠外周血白細胞、骨髓有核細胞數量及微核率變化的影響，并檢測白細胞介素（IL）-1、IL-2、超氧化物歧化酶（SOD）基因的變化以探討其抗輻射損傷的作用機制。 方法 用薏苡仁水提液在受輻射前后對小鼠進行灌胃，對輻射后小鼠外周血白細胞、骨髓有核細胞計數，計算微核率，逆轉錄-聚合酶鏈反應（RT-PCR）檢測IL-1、IL-2、SOD基因的變化，對實驗結果進行統計學分析。 結果 隨薏苡仁水提液劑量的加大，受照射小鼠骨髓有核細胞數不斷增多，且微核數呈降低趨勢；高劑量組與空白對照組相比，照射后第7天小鼠外周血白細胞數差異無統計學意義（P＞0.05），且3個劑量組外周血白細胞數均高于輻射對照組，差異有統計學意義（P＜0.01）；薏苡仁水提液高、中劑量組IL-1、IL-2、SOD基因的相對表達量均高于空白對照組和輻射對照組（P＜0.01）。 結論 薏苡仁水提液可能具有促使骨髓有核細胞快速釋放、加快外周血白細胞數量恢復進度的作用，且具有降低受輻射小鼠骨髓有核細胞和外周血淋巴細胞微核率的作用；再者，薏苡仁水提液可上調受輻射小鼠機體SOD、IL-1、IL-2的表達水平，具有增強自由基清除、抗輻射和免疫保護調節的作用。
【摘要】 目的 制備小鼠腎炎模型并觀察雙氫青蒿素（dihydroartemisinine，DHA）對模型小鼠細胞因子腫瘤壞死因子-α（tunor necrosis factor，TNF-α）和白細胞介素-6（inter leukin-6，IL-6）的影響以及小鼠腎臟的病理變化。 方法 取雄性昆明種小鼠120只， 隨機分為正常對照組、脂多糖（lipopolysaccharides，LPS）組、LPS+腎勻漿組及DHA治療組；分別于12、24、48 h取血，酶聯免疫吸附試驗檢測血清中TNF-α和IL-6的含量，蘇木精-伊紅染色法觀察小鼠腎臟的病理變化。 結果 造模48 h LPS+腎勻漿組小鼠腎小球出現炎性細胞浸潤，而正常對照組未見異常；LPS組及 DHA治療組僅有輕微的病理改變。LPS刺激使小鼠血清TNF-α和IL-6含量高于正常水平（Plt;0.01），但有隨時間不斷下降的趨勢；LPS+腎勻漿組較正常對照組TNF-α和IL-6含量升高（Plt;0.01）；DHA可顯著下調模型小鼠血清TNF-α的水平（Plt;0.01），但對IL-6的影響相對較小（Pgt;0.05）。 結論 運用改良的造模方法LPS+腎勻漿建立腎炎模型效果良好；DHA可以調節模型小鼠炎癥因子TNF-α和IL-6的釋放，具有一定的改善模型小鼠腎炎癥狀的作用。【Abstract】 Objective To establish mice nephritis models, detect the serum level changes of cytokines tumor necrosis factor α (TNF-α) and interleukin-6 (IL-6) in the model mice treated by Dihydroartemisinin (DHA), and observe the physiological changes of the mice kidneys. Methods One hundred and twenty male Kunming mice were randomly divided into 4 groups: control group, lipopolysaccharides (LPS) group, LPS plus kidney homogenate group, and DHA treated group. The level of cytokines TNF-α and IL-6 in the serum were detected by enzyme-linked immunoabsordent assey at hour 12, 24, and 48, respectively. Pathological changes were observed by hematoxylin: eosin staining. Results At the time hour 48 after the establishment of the model, inflammatory cell infiltration was observed in the glomerulus of the LPS plus kidney homogenate group, but no abnormality was found in the control group. There were only slight pathological changes in mice models of the LPS group and the DHA treated group. The serum level of TNF-α and IL-6 increased remarkably after the treatment of LPS (Plt;0.01), but declined as time went by. The level of TNF-α and IL-6 increased significantly in LPS plus kidney homogenate group compared with the control group (Plt;0.01). DHA could significantly decrease the TNF-α level in the serum (Plt;0.01), but had a low influence on IL-6 (Pgt;0.05). Conclusion The modified LPS plus kidney homogenate has a good result in model establishing. DHA can regulate the release of TNF-α and IL-6 in the model mice, and may have certain good effects on ameliorating the nephritis pathological changes.
Objective To systematically review the incidence, mortality and disease burden of stroke in China. Methods The CNKI, WanFang Data, VIP, CBM, PubMed, Embase, Web of Science and Cochrane Library databases were electronically searched to collect cohort studies on stroke epidemiology and disease burden from inception to June 30, 2024. Two reviewers independently screened the literature, extracted data, and assessed the risk of bias of the included studies. Meta-analysis was then performed using Stata 18.0 software. Results A total of 49 studies were included, and the results showed that the overall incidence of stroke in China was 430/100 000 (95%CI 370/100 000 to 490/100 000); The incidence of stroke in men was 510/100 000 (95%CI 450/100 000 to 580/100 000); The incidence of stroke in women was 370/100 000 (95%CI 320/100 000 to 410/100 000). The overall mortality rate of stroke in China was 220/100 000 (95%CI 160/100 000 to 280/100 000); Stroke mortality in men was 160/100 000 (95%CI 120/100 000 to 190/100 000); Stroke mortality in women was 130/100 000 (95%CI 100/100 000 to 160/100 000). The average standard DALY rate of stroke in China was 2 238.09/100 000, and men (3 510.53/100 000) was higher than that of women (2 083.39/100 000). Conclusion The risk of stroke in men in China is significantly higher than that in women, which is mainly attributed to the higher rate of smoking and drinking alcohol, poor eating habits and the neglect of health management. Moreover, interregional differences in aging, especially the higher aging levels in the eastern and northern regions, also have a significant impact on stroke incidence in these regions.
Objective To systematically review the incidence, mortality and disease burden of colorectal cancer (CRC) in China. Methods The CNKI, WanFang Data, VIP, CBM, PubMed, Embase and Web of Science databases were searched to collect cohort studies about the incidence, mortality and disease burden of CRC in China from the establishment of the database to July 2024. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies. Then, meta-analysis was performed by using Stata 18.0 software. Results A total of fifty-six studies were included. The result of meta-analysis showed that the overall incidence of CRC in China was 31‰ (95%CI 29‰ to 33‰), and the incidence of male was 35‰ (95%CI 32‰ to 37‰). The female incidence was 27‰ (95%CI 25‰ to 29‰). The overall mortality of CRC in China was 20‰ (95%CI 17‰ to 22‰), of which the male mortality was 22‰ (95%CI 19‰ to 25‰), and the female mortality was 18‰ (95%CI 15‰ to 20‰). Conclusion The incidence and mortality rates of CRC in China are high, resulting in a significant disease burden that varies regionally. The incidence and mortality of males are significantly higher than those of females. Intervention measures should be taken to reduce the disease burden of CRC in China according to the related risk factors of CRC.
Objective To systematically review the efficacy, safety, cost-effectiveness, indications, contraindications, and ethical issues for surgical treatment of Alzheimer's disease (AD). Methods The CNKI, WanFang Data, VIP, PubMed, Web of Science, Embase and Cochrane Library databases were electronically searched to collect for relevant studies on surgical treatment of AD from inception to November 26, 2024. Two reviewers independently screened literature, extracted data, and assessed the risk of bias of the included studies. Meta-analysis was performed by using Stata 17 software. Results A total of 59 studies were included. The results revealed that surgical treatment for AD had higher safety (OR=0.44, 95%CI 0.17 to 0.72, P<0.05), and patients had better ADAS-cog scores (SMD=0.54, 95%CI 0.18 to 0.90, P<0.05), with statistically significant differences. The economic burden of surgical treatment for AD increased with the severity of the disease. Deep brain stimulation may offer high economic benefits in the treatment of mild AD. The surgical indications can be summarized as: short disease duration, mild to moderate severity, and insufficient response to pharmacological interventions. Regarding contraindications, analysis of the included literature identified four core aspects: physiological and pathological contraindications, medical comorbidities and surgical risk contraindications, cognitive and psychological factor contraindications, and other contraindications. Ethical issues can be categorized into: informed consent and autonomy, ethical review and approval of research, and assessment of risks and benefits. Conclusion Current evidence suggests that surgical treatment for AD has certain benefits, but the surgical approaches for treating AD are still in the exploratory stage. Limited by the number and quality of the included studies, the above conclusion still requires more high-quality research to be verified.