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排序方式: 共有607条查询结果,搜索用时 875 毫秒
601.
Dr. Alessandra Acquaviva Dr. Nilofar Prof. Dr. Abdelhakim Bouyahya Prof. Dr. Gokhan Zengin Dr. Simonetta Cristina Di Simone Prof. Dr. Lucia Recinella Prof. Dr. Sheila Leone Prof. Dr. Luigi Brunetti Prof. Dr. Abdullahi Ibrahim Uba Prof. Dr. Ugur Cakilcioğlu Prof. Dr. Rıdvan Polat Prof. Dr. Ekrem Darendelioglu Prof. Dr. Luigi Menghini Prof. Dr. Claudio Ferrante Dr. Maria Loreta Libero Prof. Dr. Giustino Orlando Prof. Dr. Annalisa Chiavaroli 《化学与生物多样性》2023,20(8):e202300547
Artemisia annua L. (Asteraceae Family) is an important plant in Asia that has been used for treating different diseases, including fever due to malaria, wounds, tubercolisis, scabues, pain, convulsions, diabetes, and inflammation. In this study we aimed to evaluate the effects of different polarity extracts (hexane, dichloromethane, ethyl acetate, ethanol, ethanol/water (70 %) and water) from A. annua against the burden of inflammation and oxidative stress occurring in colon tissue exposed to LPS. In parallel, chemical composition, antiradical, and enzyme inhibition effects against α-amylase, α-glucosidase, tyrosinase, and cholinesterases were evaluated. The water extract contained the highest content of the total phenolic with 34.59 mg gallic acid equivalent (GAE)/g extract, while the hexane had the highest content of the total flavonoid (20.06 mg rutin equivalent (RE)/g extract). In antioxidant assays, the polar extracts (ethanol, ethanol/water and water) exhibited stronger radical scavenging and reducing power abilities when compared to non-polar extracts. The hexane extract showed the best AChE, tyrosinase and glucosidase inhibitory effects. All extracts revealed effective anti-inflammatory agents, as demonstrated by the blunting effects on COX-2 and TNFα gene expression. These effects seemed to be not related to the only phenolic content. However, it is worthy of interest to highlight how the higher potency against LPS-induced gene expression was shown by the water extract ; thus suggesting a potential phytotherapy application in the management of clinical symptoms related to inflammatory colon diseases, although future in vivo studies are needed to confirm such in vitro and ex vivo observations. 相似文献
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Eric T. Thacker Dale R. Gardner Terry A. Messmer Michael R. Guttery Dave K. Dahlgren 《The Journal of wildlife management》2012,76(3):588-592
Sagebrush (Artemisia spp.) constitutes the majority (>99%) of sage-grouse (Centrocercus spp.) winter diets. Thus, identification and protection of important winter habitats is a conservation priority. However, not all sagebrush may be alike. More information is needed regarding sage-grouse sagebrush winter dietary preferences for application to management. The objective of our research was to determine if chemical analysis of fecal pellets could be used to characterize winter sage-grouse diets as a substitute for more invasive methods. We collected and analyzed fecal pellets and sagebrush samples from 29 different sage-grouse flock locations in northwestern and southcentral Utah. Using gas chromatography, we were able to identify crude terpene profiles that were unique to Wyoming sagebrush (A. tridentata wyomingensis) and black sagebrush (A. nova). We subsequently used the profiles to determine sagebrush composition of sage-grouse fecal pellets, thus reflecting sage-grouse winter diets. This technique provides managers with a tool to determine which species or subspecies of sagebrush may be important in the winter diets of sage-grouse populations. © 2011 The Wildlife Society. 相似文献
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C. S. Buer M. J. Correll T. C. Smith M. J. Towler P. J. Weathers M. Nadler J. Seaman D. Walcerz 《In vitro cellular & developmental biology. Plant》1996,32(4):299-304
Summary A nutrient-mist bioreactor was designed that separates the nutrient medium from the electronic components via an acoustic
window. This eliminates compromising culture sterility when repairing mechanical failures common with commercially available
mist reactors. The experimental mist bioreactor is low cost and can be assembled in any laboratory. Toxicity tests of several
potential acoustically transparent materials are included. Details of the construction procedures include methods for casting
the window. Growth data using the newly designed nutrient mist bioreactor are compared to data from a commercial mist reactor,
shake flasks, and Gelrite cultures.Artemisia annua hairy roots andNephrolepis exaltata shoot cultures showed growth comparable to the conventional tissue culture methods. 相似文献
606.
Anna Maria Pirttilä Merja Hirsikorpi Terttu Kämäräinen Laura Jaakola Anja Hohtola 《Plant Molecular Biology Reporter》2001,19(3):273-273
Several protocols described for plant DNA isolation fail to produce good quality DNA from medicinal herbs and aromatic plants.
These plants contain exceptionally high amounts of secondary metabolites that interfere with DNA isolation. To address this
problem, we developed 2 DNA isolation methods for sundew and tarragon that produce DNA suitable for molecular biological applications.
One of the methods also is applicable for milfoil and Siberian ginseng. 相似文献
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