甜叶菊中总多酚及总多糖含量测定

目的:建立测定甜叶菊提取物中总多酚和总多糖含量的方法,并测定其含量。方法:分别以没食子酸和葡萄糖作为测定总多酚和总多糖含量的对照品,采用可见分光光度法测定甜叶菊提取物中总多酚和总多糖的含量。结果:测得甜叶菊提取物中总多酚总多糖含量分别为1.36 mg、1.73 mg。结论:该方法简单可行,重现性良好,测定结果准确、可信,可以作为甜叶菊提取物中总多酚和总多糖含量的测定方法。     

药用植物GAP生产的病害绿色防控发展策略

药用植物的GAP生产要求其栽培过程中病害的绿色防控.作者总结了病害农业防治和生物防治的研究成果,结合药用植物的特殊性提出药用植物病害绿色防控的概念,指出药用植物病害绿色防控要结合农业防治、现代植病研究方法、生物防治和科学用药协同进行,并作了展望,以期为药用植物GAP生产中病害绿色防控研究提供参考.     

亚麻仔油联合桑叶茶调治脂代谢异常64例

[目的]观察亚麻仔油联合桑叶茶调治脂代谢异常疗效。[方法]对64例脂代谢异常患者使用冷榨亚麻仔油,40mL/d。食用方法:在炒熟的菜肴、粥、汤、面条中滴入或直接服用亚麻仔油,每次20mL,早晚各服1次。每日泡饮桑叶茶30g,于早、中、晚餐后以桑叶茶10～15g沸水冲泡数分钟后温饮。连续治疗4周为1疗程。观测临床症状、血压、舌质、舌苔、脉象,生化指标(血脂四项、血糖)、心电图、不良反应。连续治疗2疗程,判定疗效。[结果]显效42例,有效21例,无效1例,总有效率98.40%。[结论]亚麻仔油联合桑叶茶调治脂代谢异常疗效满意。     

绿茶儿茶素对于人肝癌细胞的凋亡诱导作用

目的：探讨绿茶儿茶素（GTC）对BEL－7402人肝癌细胞的凋亡诱导作用。方法：应用透射电镜、流式细胞术、TUNEL和免疫组化等方法检测受100或200μg／ml GTC作用4天后的BEL－7402细胞的凋亡情况及其PCNA、bcl－2、c－myc、p53蛋白表达情况。结果：受GTC作用4天后的BEL－7402细胞的凋亡显著性增加,其PCNA表达显著性下降,而与凋亡相关的癌基因bcl－2、c－myc、p53蛋白表达未见明显改变。结论：GTC对于BEL－7402细胞的生长抑制作用可能与诱导细胞凋亡有关,也可能与抑制癌细胞DNA合成有关。本研究未发现GTC诱导BEL－7402细胞凋亡与bcl－2、c－myc、p53蛋白表达的相关性。     

South African herbal teas: Aspalathus linearis, Cyclopia spp. and Athrixia phylicoides--a review

Rooibos (Aspalathus linearis (Brum.f) Dahlg.) and honeybush (Cyclopia Vent. species) are popular indigenous South African herbal teas enjoyed for their taste and aroma. Traditional medicinal uses of rooibos in South Africa include alleviation of infantile colic, allergies, asthma and dermatological problems, while a decoction of honeybush was used as a restorative and as an expectorant in chronic catarrh and pulmonary tuberculosis. Traditional medicinal uses of Athrixia phylicoides DC., or bush tea, another indigenous South African plant with very limited localised use as herbal tea, include treatment of boils, acne, infected wounds and infected throats. Currently rooibos and honeybush are produced for the herbal tea market, while bush tea has potential for commercialisation. A summary of the historical and modern uses, botany, distribution, industry and chemical composition of these herbal teas is presented. A comprehensive discussion of in vitro, ex vivo and in vivo biological properties, required to expand their applications as nutraceutical and cosmeceutical products, is included, with the main emphasis on rooibos. Future research needs include more comprehensive chemical characterisation of extracts, identification of marker compounds for extract standardisation and quality control, bioavailability and identification of bio-markers of dietary exposure, investigation of possible herb-drug interactions and plant improvement with regards to composition and bioactivity.     

Antiinflammatory and antioxidant activity of Hypericum rumeliacum Boiss. subsp. apollinis (Boiss. & Heldr.) Robson & Strid methanol extract

Plants of the genus Hypericum are widely used in folk medicine for the treatment of gastric ailments (including pectic ulcers), burns, swelling, inflammation, anxiety, as well as for bacterial and viral infections. The aerial parts of Hypericum rumeliacum Boiss. subsp. apollinis (Boiss. & Heldr.) Robson & Strid (Guttiferae), a perennial herb growing wild in Greece, were subjected to biological and phytochemical studies. The H. rumeliacum methanol extract showed, on the DPPH test, antioxidant activity (IC(50) = 23.61 microg/mL). The antiinflammatory activity of the extract (70 mg/kg, i.p.), in the carrageenan-induced paw oedema in rat, was studied. In this experimental model an inhibition of paw oedema, significant from the first to third hour, was observed. The histological examination confirmed resolution of the inflammatory process observed in vivo. Through HPLC analysis of the H. rumeliacum methanol extract, the naphthodianthrones hypericin, pseudohypericin and some polyphenol compounds, such as chlorogenic acid, rutin and isoquercitrin, were identified and quantified. The antioxidant activity of H. rumeliacum could be chiefly related to polyphenol compounds that are well known as the main contributors to the free radical-scavenging effects. The antiinflammatory effect of the methanol extract of the aerial parts could be due to the synergic action both of hypericin and polyphenol compounds.     

茶多酚对人鼻咽癌细胞裸鼠移植瘤的生长抑制作用

目的：通过观察茶多酚在体内对人鼻咽癌细胞的抑制作用,探讨其可能的抗癌机制。方法以人鼻咽癌细胞株HONE1建立裸鼠皮下移植瘤模型,以茶多酚腹腔注射干预,在观察抑瘤率基础上,以实时荧光定量PCR及Western blot法分别检测裸鼠移植瘤VEGF在mRNA及蛋白水平上的表达变化。结果茶多酚具有显著抑制鼻咽癌细胞 HONE1移植瘤生长的作用,与模型对照组相比,低、高剂量茶多酚组体内抑瘤率分别为18．82％、47．66％,呈浓度相关性（P＜0．05）;荧光定量 PCR及Western blot结果示,茶多酚可下调VEGF的mRNA和蛋白表达水平,且呈浓度依赖性,其中高剂量组变化明显,差异有统计学意义（P＜0．05）。结论茶多酚对人鼻咽癌HONE1细胞裸鼠移植瘤的生长具有明显抑制作用,机制可能与调节VEGF表达,从而抑制肿瘤血管生成等作用有关。     

富锌麦草茶的研制与开发

目的利用富锌麦苗与绿茶及药食同源的药材-金银花、菊花、枸杞等研制开发一种新款饮品-麦草茶。方法采用观感评价及品尝统计评价的方法确定杀青条件和配方组成。结果麦苗以90℃温度2%异抗坏血酸钠和0.5%柠檬酸混合液护色较为理想;按60%麦苗、17%绿茶、3%贡菊、1.5%金银花、13%枸杞、5.5%甘草的比例组配口感较理想。结论麦草茶主要呈现麦苗的草绿色,其中散布着白色的贡菊、金银花和红色的枸杞,具有良好外观形象;并兼有绿茶的醇香和淡淡的麦草香味,具有良好适口性。该产品特点是含有麦苗的全部营养成分、中草药的有效成分及丰富的微量元素锌,同时还保持了传统茶的风味。人们可以长期饮用,在满足传统饮茶习惯的同时,使心身得到健康。     

茶多酚对变形链球菌的体外抗菌活性研究

目的研究茶多酚对变形链球菌的抗菌活性.方法采用琼脂稀释法测定茶多酚对34株变形链球菌临床分离株的最小抑菌浓度(MIC).结果茶多酚对变形链球菌的MICR为500～4000mg/L,MIC50为1000mg/L,MIC90为2000mg/L.1×106CFU/ml与1×108CFU/ml菌液浓度对MIC值略有影响.结论茶多酚对变形链球菌具有明显的抗菌活性.     

微量淋巴细胞毒技术与核酸扩增荧光技术检测HLA-B27的对比

目的：通过比较核酸扩增荧光技术（PCR-染料法）和微量淋巴细胞毒技术在检测HLA-B27中的符合率,分析两种方法的优势与不足,探讨核酸扩增荧光技术（PCR-染料法）在HLA-B27检测中的临床应用价值。方法随机选取197例来我科就诊的疑似强直性脊柱炎（ankylosing spondylitis,AS）患者的样本,分别使用微量淋巴细胞毒法和PCR-染料法检测。并对两种方法检测结果不符的样本进行测序复核。结果197例样本中,微量淋巴细胞毒法检出HLA-B27阳性150例,阴性47例;PCR-染料法检出阳性135例,阴性62例;两种方法检测结果有统计学差异（P＜0.01）。15例差异样本,两种方法与测序法相比较的符合率,微量淋巴细胞毒法为13.3%,PCR-染料法为86.7%。结论核酸扩增荧光技术（PCR-染料法）和微量淋巴细胞毒法比较,前者具有更高的临床准确性。在样本处理上PCR-染料法也更具优势,操作简单方便,有很强的临床应用价值。