Nghể bụi (Polygonum posumbu Buch.-Ham. ex D. Don) là loài cỏ dại mọc nơi đất ẩm ven rừng, suối, bờ sông ngòi. Theo kinh nghiệm dân gian cây này được sử dụng để trị lỵ, viêm dạ dày ruột, tiêu chảy, phong thấp. Trong nghiên cứu về thành phần hóa thực vật bằng các phương pháp sắc ký đã thu 4 hợp chất phân lập từ đoạn ethyl acetat của và xác định lần lượt acid gallic, myricetin, distichin, quercitr...

In a Perspective, Julie Garon and Walter Orenstein discuss Lessler and colleagues' modeling study on measles vaccination and the implications for triggered and routine immunization programs.

background: herbal medicine is a new complementary strategy for treating diseases such as cancer. however, its mechanism of action is not clear yet. this study investigates antitumor efficacy of polygonum avicular extract on mcf-7 cell line . methods: mcf-7 cells were treated with different concentrations of (50, 100, 150, 200, 250, 300,350 400 ng/âµl) polygonum avicular at different time inter...

Cortinarius is the largest genus of ectomycorrhizal fungi worldwide. Recent molecular studies have shown high levels of morphological homoplasy within the genus. Importantly, DNA phylogenies can reveal characteristics that have been either over- or underemphasized in taxonomic studies. Here we sequenced and phylogenetically analysed a large set of pan-European and North American collections tax...

Potato (Solanum tuberosum L.) is cultivated in India in a commercial scale and this crop is susceptible to various insect pests of which aphids (both Myzus persicae Sulzer and Aphis gossypii Glover) cause heavy damage especially by spreading virus diseases. Studies were made to evaluate efficacy of extracts from plants such as Pongamia pinnata L. and Nicotiana tabacum L. and Polygonum hydropipe...

We conducted a phylogenetic analysis to characterize relationships among Bromus and test the monophyly of five of the seven morphologically distinct groups within Bromus (Poaceae: Pooideae) that have been treated as sections, subgenera, or genera. We sequenced the chloroplast trnL (UAA) intron, the 3!-end of the chloroplast ndhF gene, and the internal transcribed spacers (ITS) of the nuclear ri...

a phylogenetic analysis of astragalus sect. alopecuroidei based on nrdna its as well as morphological character data is presented. a total of fifty informative morphological characters were analyzed to reconstruct phylogenetic relationships for 23 taxa of the sect. alopecuroidei and two species of sect. laxiflori plus a. sieversianus and a. caryolobus as outgroups. the present analysis revealed...

Current strategies for Alzheimer’s disease (AD) treatment are mainly symptomatic; development of disease-modifying therapies is urgently needed. Polygonum Multiflorum has been used in Traditional Chinese Medicine for long history in treatment of dementia. Pharmacological studies suggested Polygonum Multiflorum could improve learning and memory abilities in animal models of AD, and inhibit β-amy...