氧化苦参碱清除·OH自由基作用及对胸腺嘧啶核苷酸辐射防护作用的ESR研究

本实验利用ＥＳＲ技术研究了氧化苦参碱清除·ＯＨ作用及辐射对胸腺嘧啶核苷酸（５′－ＴＭＰ）间接损伤的防护作用。结果表明：氧化苦参碱有较好的清除·ＯＨ作用，且呈明显量效关系。通过清除·ＯＨ，氧化苦参碱对辐射导致的胸腺嘧啶核苷酸（５′－ＴＭＰ）的间接损伤有显著防护作用     

苦参素、放射治疗联合应用对人卵巢癌HO8910细胞的抑制作用的探究

目的：观察苦参素、放射治疗联合应用对人卵巢癌细胞HO8910体外活性的影响。方法：MTT显色法检测不同组别对HO8910细胞的生长抑制作用;倒置显微镜观察细胞结构改变。结果：在苦参素、放射治疗及二者联合作用下均能抑制HO8910细胞生长,二者联合作用下抑制HO8910细胞生长作用更明显。结论：苦参素、放射治疗二者联合应用对人卵巢癌HO8910细胞体外生长有协同抑制作用。     

α-干扰素联合苦参素治疗对肝功能和肝纤维化指标的影响

目的:观察α-干扰素(IFN-α)联合苦参素治疗对慢性乙型肝炎患者肝功能和肝纤维化指标的影响。方法:将慢性乙肝患者100例,随机分为治疗组52例,对照组48例。治疗组采用IFN-α5 Mu/d,肌注,q.d,连用2周后改隔日1次,疗程6月。同时加用苦参素注射液600 mg/d,q.d,静滴,3月后改口服苦参素胶囊,300 mg,t.i.d,疗程共6月。对照组则单用IFN-α,剂量疗程相同。疗程结束时,观察两组患者肝功能及血清肝纤维化等指标变化。结果:IFN-α联合苦参素治疗组丙氨酸转氨酶复常率为80.77%,两组比较差异有显著性(P<0.05):治疗组血清透明质酸、层粘蛋白、Ⅲ型前胶原、Ⅳ型胶原等指标与对照组比较均具有显著性差异(P<0.05或P<0.01)。结论:IFN-α联合苦参素治疗具有改善肝功能和抗肝纤维化等疗效。     

山豆根抗肿瘤活性成分及其作用机制研究进展

山豆根Sophorae Tonkinensis Radix et Rhizoma来源于豆科植物越南槐的干燥根和根茎，具有清热解毒、消肿利咽之功效，其化学成分复杂，药理活性多样。现代研究证明，山豆根中生物碱类、黄酮类、苯并呋喃类、三萜类、多糖类等化合物能抑制肿瘤细胞的增殖、黏附、侵袭和转移，诱导细胞凋亡和自噬，抑制肿瘤血管生成，阻滞细胞周期和信号转导，还可通过提高机体免疫功能，抑制肿瘤的发生发展，对不同类型的恶性肿瘤均有良好的拮抗作用，具有多成分、多靶点、多通路的特点。通过对山豆根抗肿瘤活性成分及其作用机制进行综述，为山豆根抗肿瘤的深入研究和新药开发提供参考依据。     

Oxymatrine ameliorates white matter injury by modulating gut microbiota after intracerebral hemorrhage in mice

Introduction

White matter injury (WMI) significantly affects neurobehavioral recovery in intracerebral hemorrhage (ICH) patients. Gut dysbiosis plays an important role in the pathogenesis of neurological disorders. Oxymatrine (OMT) has therapeutic effects on inflammation-mediated diseases. Whether OMT exerts therapeutic effects on WMI after ICH and the role of gut microbiota involved in this process is largely unknown.

Methods

Neurological deficits, WMI, gut microbial composition, intestinal barrier function, and systemic inflammation were investigated after ICH. Fecal microbiota transplantation (FMT) was performed to elucidate the role of gut microbiota in the pathogenesis of ICH.

Results

OMT promoted long-term neurological function recovery and ameliorated WMI in the peri-hematoma region and distal corticospinal tract (CST) region after ICH. ICH induced significant and persistent gut dysbiosis, which was obviously regulated by OMT. In addition, OMT alleviated intestinal barrier dysfunction and systemic inflammation. Correlation analysis revealed that gut microbiota alteration was significantly correlated with inflammation, intestinal barrier permeability, and neurological deficits after ICH. Moreover, OMT-induced gut microbiota alteration could confer protection against neurological deficits and intestinal barrier disruption.

Conclusions

Our study demonstrates that OMT ameliorates ICH-induced WMI and neurological deficits by modulating gut microbiota.     

苦参碱抗肿瘤作用研究进展

纵览苦参生物碱抗肿瘤活性的研究进展 ,近年研究发现苦参碱可抑制部分肿瘤细胞的增殖与转移 ,诱导肿瘤细胞的凋亡和分化 ,同时又具有免疫调节作用、升高白细胞活性。研究结果提示苦参碱有可能在抗肿瘤机制中发挥独特效用 ,为人类攻克肿瘤提供更加有益的思路和借鉴