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991.
992.
Qian Zhang;Qinqin Pu;Zhengyi Jiang;Jie Zhao;Yan Dai;Nannan Hu;Yaping Han;Nan Jiang;Luchen Shi;Jiaying Zhao;Ke Ouyang;Huaying Huang;Ke Jin;Jun Li; 《Chemical biology & drug design》2024,104(6):e70005
Severe fever with thrombocytopenia syndrome (SFTS) is a severe emerging infectious disease caused by Dabie bandavirus (DBV). Tectorigenin has been demonstrated to exert anti-inflammatory effect. Here, we aimed to investigate the effects of tectorigenin on DBV-induced cytokine storm. Effects of tectorigenin on cytokines in DBV-infected THP-1 cells and plasma samples of Type I interferon receptor (IFNAR)−/− mice infected with DBV were detected. The changes in body weight and survival time of mice were recorded. The liver, spleen, kidney, and lymph node tissues were collected for hematoxylin–eosin staining. We demonstrated that tectorigenin reduced the expression levels of inflammatory cytokines in both DBV-infected THP-1 cells and plasma samples of IFNAR−/− mice infected with DBV. Tectorigenin attenuated DBV-induced histopathological changes in mice. Mechanistically, tectorigenin attenuated DBV-induced phosphorylation of inhibitor of kappa-B kinase alpha/beta (IKKα/β) of the nuclear factor-κB (NF-κB) signaling pathway, extracellular signal–regulated kinase (ERK) of the mitogen-activated protein kinase (MAPK) signaling pathway and might function by downregulation of Toll-like receptor. The result of this study suggested that tectorigenin exerted anti-inflammatory effects in vivo and in vitro and could serve as a novel potential therapeutic strategy for SFTS. 相似文献
993.
目的 探究18F-氟脱氧葡萄糖-正电子体层扫描成像(18F-FDG PET/CT)在三阴性乳腺癌分子分型诊断中的价值。方法 回顾性分析2010年1月1日至2022年12月31日在天津医科大学肿瘤医院行18F-FDG PET/CT检查的227例乳腺癌患者的临床和影像学资料,根据乳腺癌原发灶雌激素受体(ER)、孕激素受体(PR)及人表皮生长因子受体2(HER-2)表达状态将患者分为三阴性乳腺癌和非三阴性乳腺癌两组;基于PET图像和CT图像,提取影像组学特征,构建影像组学模型用于预测三阴性乳腺癌的分子分型;并比较两组患者的临床资料、CT形态学特征和PET代谢参数的差异,筛选出差异有统计学意义的指标,建立联合临床特征的综合性影像组学模型。结果 与非三阴性乳腺癌相比,三阴性乳腺癌在肿瘤直径、边缘、合并同侧腋下淋巴结转移、累犯邻近皮肤乳头及PET代谢参数等方面表现出更显著的侵袭性(t=-3.19,χ2=7.30、8.10、5.34,t=3.80、3.30、3.42,P＜ 0.05)。构建的18F-FDG PET/CT影像组学模型能够有效预测三阴性乳腺癌的分子分型,受试者工作特征(ROC)曲线分析显示,曲线下面积(AUC)为0.83(95%CI 0.78~0.88),预测准确度为75.9%,灵敏度为74.5%,特异度为77.2%。构建的综合性影像组学模型AUC为0.86(95%CI 0.81~0.90),预测准确度为77.2%,灵敏度为78.6%,特异度为75.9%。结论 18F-FDG PET/CT在三阴性乳腺癌分子分型诊断中发挥重要价值,构建的影像组学模型和综合性影像组学模型进一步提高了PET代谢参数的预测效能,有助于临床上尽早制定准确的治疗方案,从而改善患者预后。 相似文献
994.
995.
Kei Washida Nobumasa Matsui Morio Shoji Dai Nakaizumi Shigeru Terada 《Journal of Physical Therapy Science》2021,33(12):898
[Purpose] In the medical treatment guidelines for type 2 diabetes, the utility of the approach using self-efficacy and stage of change has been previously demonstrated. Although the effects of short-term approaches have been shown, a few studies have examined long-term changes over time. The purpose of the present study was to investigate longitudinally the factors that affect the stage of change, self-efficacy for exercise, and glycemic control for 12 months in patients with type 2 diabetes after the intervention of the disease by receiving diabetes and glycemic control education. [Participants and Methods] The study included 29 patients with type 2 diabetes as participants who were able to follow up for 12 months after the intervention. The changes over time were investigated using stage of change and self-efficacy as psychological indicators of exercise. Factors affecting HbA1c values after 12 months of intervention were examined with information on diabetes and social background. [Results] There was no significant difference in self-efficacy for exercising at 3, 6, and 12 months after discharge. In contrast, participants in the stage of change showed a significant improvement at 6 and 12 months after discharge in comparison to 3 months after discharge. HbA1c values decreased at 12 months while comparing patients after 3 months and 12 months after discharge. The only factor affecting HbA1c value 12 months after discharge was the duration of diabetes. [Conclusion] The results suggested that stage of change and self-efficacy for exercise might have a little long-term effect on glycemic control. 相似文献
996.
Cuiping Chen Jack Jenkins Katie Zomorodi Roman Skowronski 《CTS Clinical and Translational Science》2021,14(6):2278
American Academy of Sleep Medicine practice parameters designate sodium oxybate (SXB) as a standard of care for cataplexy, excessive daytime sleepiness (EDS), and disrupted night‐time sleep in narcolepsy. Recently, a lower‐sodium oxybate (LXB) with 92% less sodium than SXB was approved in the United States for the treatment of cataplexy or EDS in patients 7 years of age and older with narcolepsy. Two phase I, open‐label, randomized, single‐dose crossover pharmacokinetic studies in healthy adults were conducted. Single 4.5‐g oral doses of LXB and SXB were administered in a fasted or fed state. In the fasted state at equivalent oxybate doses, LXB, compared with SXB, had a lower maximum plasma concentration (Cmax; study 1 [total aqueous volume, 240 ml]: 101.8 vs. 135.7 µg/ml; study 2 [60 ml]: 94.6 vs. 123.0 μg/ml), delayed time to Cmax (Tmax; study 1: 0.75 vs. 0.5 h; study 2: 1.0 vs. 0.5 h), but similar area under the curve (AUC; study 1: AUC0‐t, 235.4 vs. 263.9 μg∙h/ml; AUC0‐∞, 236.5 vs. 265.2 μg∙h/ml; study 2: AUC0‐t, 241.5 vs. 254.7 μg∙h/ml; AUC0‐∞, 243.1 vs. 256.3 μg∙h/ml). Bioequivalence criteria were met for AUC but not Cmax (both studies). Cmax and AUC were lower under fed than fasted conditions (LXB and SXB); differences between fed versus fasted were smaller for LXB than SXB. These pharmacokinetic differences between LXB and SXB are likely due to the lower sodium content in LXB. Pooled analyses demonstrated that a higher Cmax is associated with a higher incidence of nausea and vomiting. Study Highlights
- WHAT IS THE CURRENT KNOWLEDGE ON THE TOPIC?
- WHAT QUESTION DID THIS STUDY ADDRESS?
- WHAT DOES THIS STUDY ADD TO OUR KNOWLEDGE?
- HOW MIGHT THIS CHANGE CLINICAL PHARMACOLOGY OR TRANSLATIONAL SCIENCE?
997.
998.
EcoRI is an important biomacromolecule in live cells and protects bacterial cells against foreign DNA. In this work, we developed a simple and convenient G-triplex (G3) (5′-TGGGAAGGGAGGGAATTCCCT-3′)-based colorimetric assay for the rapid and selective detection of EcoRI activity and inhibition. The sequence specifically responds to EcoRI in the presence of K+ and hemin to form a G-triplex/hemin complex. Taking advantage of G-triplex, EcoRI activity was investigated under the optimized conditions. The absorption intensity ratio displayed a linear relationship against the concentration of EcoRI in the range 0 to 100 U mL−1, and the detection limit was 5.7 U mL−1. Furthermore, G3 showed good selectivity, and the ability to be used to screen for EcoRI inhibitors, indicating its potential in detection and analysis applications.A new G-triplex-based probe was developed for detecting EcoRI activity and inhibition. The probe showed good selectivity towards EcoRI. The assay was colorimetric and can be monitored by the naked eye. 相似文献
999.
1000.
目的 研究去肾动脉交感神经对自发性高血压大鼠肾上腺、下丘脑等神经内分泌器官交感神经活动的影响。方法 16只12周龄的雄性自发性高血压大鼠随机分为去肾神经组（RDNX组）和假手术组（Sham组）,8只12周龄的雄性Wistar大鼠作为正常对照组（WKY组）。RDNX组采用苯酚消蚀法进行双侧去肾动脉交感神经术,而Sham组和WKY组进行假手术。分别检测各组大鼠术前和术后2周的收缩压（SBP）、舒张压（DBP）、平均动脉压（MAP）、心率（HR）和血清去甲肾上腺素（NE）含量,以及术后肾、肾上腺和下丘脑NE含量,免疫组织化学法观察肾上腺髓质和下丘脑视旁核酪氨酸羟化酶（TH）染色情况。结果 RDNX组和Sham组术前SBP、DBP、MAP高于WKY组（P?<0.05）;RDNX组与Sham组术前SBP、DBP、MAP差异无统计学意义（P?>0.05）;3组大鼠SBP、DBP、MAP术前与术后差值比较,差异有统计学意义（P?<0.05）;RDNX组SBP、DBP、MAP术前与术后差值大于Sham组和WKY组（P?<0.05）。3组大鼠术后肾脏、肾上腺和下丘脑NE含量比较,差异有统计学意义（P?<0.05）,Sham组术后肾脏、肾上腺和下丘脑NE含量高于RDNX组和WKY组。免疫组织化学结果显示,3组大鼠术后下丘脑视旁核和肾上腺髓质TH蛋白表达量比较,差异有统计学意义（P?<0.05）,Sham组术后下丘脑视旁核细胞TH蛋白表达量高于RDNX组和WKY组,Sham组肾上腺髓质细胞TH蛋白表达最高,WKY组其次,RDNX组最低。结论 去肾动脉交感神经可减少自发性高血压大鼠肾上腺、下丘脑等神经内分泌器官的交感神经活动,并显著降低动脉血压。 相似文献