Total antioxidant and oxidant status of plasma and renal tissue of cisplatin-induced nephrotoxic rats: protection by floral extracts of Calendula officinalis Linn.

The present study was aimed to determine the total antioxidant status (TAS), total oxidant status (TOS) and oxidative stress index (OSI) of plasma and renal tissue in cisplatin (cDDP) induced nephrotoxic rats and its protection by treatments with floral extracts of Calendula officinalis Linn. Treatment with cDDP elevated (p?p?C. officinalis along with cDDP restored (p?>?0.05) CR, albumin, TOS, GSH and activities of antioxidant enzymes in blood and renal tissue. Ethanolic extract treatments reduced (p?C. officinalis protect cDDP induced nephrotoxicity by restoring antioxidant system of the renal tissue.     

The optimization of technological processes,stability and microbiological evaluation of innovative natural ingredients-based multiple emulsion

Abstract

For the last couple of decades, multiple emulsions were prepared either by the re-emulsification of primary emulsion or they were produced by an emulsion inversion and their technological peculiarities were widely investigated. The aim of our study was to investigate and determine the optimal technological parameters of innovative multiple emulsion, prepared directly—by addition of ethanolic rosemary extract in the presence of polymeric emulsifier—and evaluate its stability by experimental surface response design approach. The results revealed that simplified W/O/W emulsification process is stirring time and stirring speed sensitive: the change of stirring time from 5 to 15?min at 600?rpm resulted in increased viscosity (from 1705.6?±?62.2 to 3364.1?±?112.5?mPA/s) and smaller oil droplet size (from 33.09?±?1.51 to 17.81?±?0.78?μm), though the conductivity increased from 800?±?2 to 882?±?2 μS/cm (p?<?.05). The second mixing stage (1000?rpm) had a negative effect on the conductivity of W/O/W emulsion because of the inner aqueous phase encapsulation efficiency. Ethanolic rosemary extract was used as multifunctional agent: not only to form multiple emulsion but also to preserve it; microbiological assay confirmed its effectiveness. A stable W/O/W type drug delivery system was successfully created without additional technological stages, phase inversion or surfactants.     

卢旺达产金盏菊花的黄酮苷类成分

目的对卢旺达产金盏菊花的化学成分进行研究,为进一步开发利用该植物资源提供依据。方法采用大孔吸附树脂、正相硅胶、Sephadex LH-20、反相ODS等柱色谱以及制备型高效液相色谱法等手段进行分离纯化,并通过理化性质与核磁共振等波谱学数据相结合的方法鉴定化合物的结构。结果从金盏菊花体积分数为70%的乙醇溶液提取物中分离鉴定了6个单体成分,分别为异鼠李素-3-O-芸香糖苷(isorhamnetin-3-O-rutinoside,1)、异鼠李素-3-O-新橙皮糖苷(isorhamnetin-3-O-neohespeidoside,2)、香蒲新苷(typhaneoside,3)、槲皮素-3-O-β-D-新橙皮糖苷(quercetin-3-O-β-D-neohespeidoside,4)、芦丁(rutin,5)、槲皮素-3-O-(2″,6″-二-O-α-L-鼠李糖基)-β-D-葡萄糖苷(quercetin-3-O-(2″,6″-di-O-α-L-rhamnopyranosyl)-β-D-glucopyranoside,6)。结论首次对东非产金盏菊干燥花的化学成分进行研究,分离得到了6个黄酮类化合物。     

芦笋食用与废弃部分皂苷含量的比较研究

目的优化芦笋皂苷提取工艺,比较芦笋食用部分和废弃部分的皂苷含量。方法采用超声提取法,以芦笋中皂苷的提取率为指标,采用单因素实验和正交实验考察乙醇浓度、料液比、提取时间和提取温度对超声法提取芦笋两部分中总皂苷的影响,并用紫外分光光度法测定皂苷在两部分中的含量。结果芦笋食用部分总皂苷最佳提取条件为提取温度为70℃,提取时间为2h,料液比为1：15,乙醇浓度为10％。提取率为179．83mg·g-1;芦笋废弃部分总皂苷最佳提取条件为提取温度为40℃,提取时间为2．5h,料液比为1：15,乙醇浓度为30％,提取率为117．8lmg·g-1。结论经SPSS软件进行独立样本T检验,得知芦笋食用与废弃部分粗提物中皂苷的含量差异较大,需待进一步进行研究。     

鱼肝油滴剂调和生地榆粉外敷治疗小儿臀红疗效观察

目的观察鱼肝油滴剂调和生地榆粉外敷对小儿臀红的临床疗效。方法选取我院2010年2月至2013年2月收治或发生过臀红的患儿78例作为研究对象,随机分成鱼肝油地榆组、植物油组、生理盐水组,根据臀红的不同分度,分别给予治疗。结果 3种不同的治疗方法比较,鱼肝油地榆组的疗效明显优于其他2组,差异有高度统计意义（P〈0.01）。结论鱼肝油调和生地榆粉外敷治疗小儿臀红疗效确切,效果明显优于传统疗法,且简便易行,值得临床推广。     

The effect of centralization on short term outcomes of pancreatoduodenectomy in a universal health care system

Background

Centralization of pancreatic resections is advocated due to a volume-outcome association. Pancreatic surgery is in Norway currently performed only in five teaching hospitals. The aim was to describe the short-term outcomes after pancreatoduodenectomy (PD) within the current organizational model and to assess for regional disparities.

菊淀粉型巴戟天寡糖抗创伤后应激障碍行为学评价

目的 用大鼠和小鼠创伤后应激障碍(PTSD)模型评价菊淀粉型巴戟天寡糖(IOMO)对场景恐惧行为和焦虑行为的影响.方法 建立大鼠单次延长应激(SPS)模型和小鼠不可逃避足底电击(FS)模型,实验分组均为正常对照组、模型组、模型+舍曲林(Ser)组和模型+不同剂量IOMO组.在大鼠SPS模型中,于造模后每天1次ig给予I...     

药用植物厚朴研究进展

文章就厚朴种质资源及其栽培技术、化学成分、厚朴药效成分的提取及药理作用等方面的研究现状进行综述,并对厚朴未来的开发利用与研究方向进行探讨,为厚朴这一传统药用植物的进一步保护、开发和利用提供新思路。     

Poly(vinyl alcohol)/Plant Extracts Films: Preparation,Surface Characterization and Antibacterial Studies against Gram Positive and Gram Negative Bacteria

In this study, we aim to obtain biomaterials with antibacterial properties by combining poly(vinyl alcohol) with the extracts obtained from various selected plants from Romania. Natural herbal extracts of freshly picked flowers of the lavender plant (Lavandula angustifolia) and leaves of the peppermint plant (Mentha piperita), hemp plant (Cannabis sativa L.), verbena plant (Verbena officinalis) and sage plant (Salvia officinalis folium) were selected after an intensive analyzing of diverse medicinal plants often used as antibacterial and healing agents from the country flora. The plant extracts were characterized by different methods such as totals of phenols and flavonoids content and UV-is spectroscopy. The highest amounts of the total phenolic and flavonoid contents, respectively, were recorded for Salvia officinalis. Moreover, the obtained films of poly(vinyl alcohol) (PVA) loaded with plant extracts were studied concerning the surface properties and their antibacterial or cytotoxicity activity. The Attenuated Total Reflection Fourier Transform Infrared analysis described the successfully incorporation of each plant extract in the poly(vinyl alcohol) matrix, while the profilometry demonstrated the enhanced surface properties. The results showed that the plant extracts conferred significant antibacterial effects to films toward Staphylococcus aureus and Escherichia coli and are not toxic against fibroblastic cells from the rabbit.     

山茱萸的化学成分

目的：对山茱萸的化学成分进行分离和鉴定。方法：运用硅胶、Sephadex LH-20柱层析和重结晶等方法分离纯化化合物,通过波谱解析和理化鉴别进行结构鉴定。结果：分离鉴定了12个化合物,分别为：对羟基桂皮酸（1）,山柰酚（2）,槲皮素（3）,山柰素-3-O-β-D-葡萄糖苷（4）,柚皮素（5）,7-脱氢马钱苷（6）,马钱苷（7）,阿江榄仁树葡糖苷Ⅱ（8）,山茱萸新苷（9）,熊果酸（10）,苹果酸甲酯（11）,没食子酸（12）。结论：化合物1-5和8为首次从该植物中分离得到。