Search results for "Plantes medicinals"
showing 10 items of 10 documents
New medicines inspirated in Annonaceae = Nuevos fármacos inspirados en Annonáceas
2014
Active secondary metabolites (ASM) play a highly significant role in the drug discovery. Natural complex chemical skeleton such as statins isolated from Aspergillus terreus, or acetogenins specific from Annonaceae family, are not able to be invented in any laboratory. The ASM isolated from Annonaces, especially acetogenins and isoquinoline alkaloids should be considered as a source of continuous inspiration for the chemists, the pharmacologists and all researchers that are interested in discovering a new drug family. --- Los metabolitos secundarios activos (MSA) juegan un papel importante en el descubrimiento de nuevos medicamentos. Moléculas naturales con esqueletos complejos, tales como l…
Identification of Bioactive Compounds in Polar and Nonpolar Extracts of Araujia sericifera
2017
Abstract Araujia sericifera is a native perennial, climbing laticiferous shrub from South America that is currently naturalized in many other countries. Previous data describe promising properties for A. sericifera, but no systematic study of its bioactive compounds and possible medicinal applications has been conducted to date. In the present study, aerial parts of A. sericifera (leaves, stems, and fruits) were explored by combining GC-MS and NMR spectroscopy analysis for both nonpolar (hexane) and polar (methanol) extracts. The hexanic extracts contained high amounts of pentacyclic triterpenes including two new metabolites, 3-tigloyl germanicol (18) and 3-tigloyl lupeol (19). The methanol…
Noua Stirpium Aduersaria, perfacilis vestigatio, luculentaque accessio ad Priscorum, praesertim Dioscoridis, & Recentiorum, Materiam Medicam / Auctor…
1576
Sign.: [ ]2, A-B6, Aa-Rr6, Qq-Rr4, [cristus]-2[cristus]4, *-*****4 Port. arquitectònica. - Capll. orn. - Index de matèries en llatí, francès, alemany, italià i castellà
Pedacio Dioscorides Anazarbeo, annotado por el Doctor Andres Laguna ... : nuevamente ilustrado, y añadido, demonstrando las figuras de plantas, y ani…
Sig.: [calderó]-[7calderons]2, A-Gg4, A-Ee4 Tomo primero. - Que contiene el primero, y segundo libro de la Colectanea de la materia de los Medicamentos. - [28], 240, 224 p., [3], XXVI f. de làm Els grav. calc. - Els f. de làm. sense numerar signats per Joannes Perez, incloent escut heràldic de Felip V, a qui es dedica el vol., i retrat de Francisco Suárez de Ribera. - Capitals grav., vinyetes i altres ornaments tip Cada llibre amb pag. pròpia. - Port. a dues tintes amb grav. - Postil·les marginals als Preliminars. - Text a dues col. - Reclams
Guava (Psidium guajava L.) Leaf Extract as Bioactive Substances for Anti-Androgen and Antioxidant Activities
2022
Leaves of guava (Psidium guajava L.) have been used in Thai folk medicine without any supporting evidence as a traditional herbal remedy for hair loss. Androgenetic alopecia (AGA) is chronic hair loss caused by effects of androgens in those with a genetic predisposition, resulting in hair follicle miniaturization. Our objectives were to provide the mechanistic assessment of guava leaf extract on gene expressions related to the androgen pathway in well-known in vitro models, hair follicle dermal papilla cells (HFDPC), and human prostate cancer cells (DU-145), and to determine its bioactive constituents and antioxidant activities. LC-MS analysis demonstrated that the main components of the et…
Application of ultrasound as clean technology for extraction of specialized metabolites from stinging nettle (Urtica dioica L.)
2022
Nettle is a highly valued medicinal plant that is still largely neglected, both in terms of nutrition and use for pharmacological purposes. Tinctures, i.e., alcoholic extracts, are becoming increasingly popular nettle products, mainly because they allow better availability of phytochemicals and their stability over a longer period of time. The production of alcoholic extracts is a chemically demanding process that is still usually carried out using conventional techniques, which have numerous drawbacks. The use of green technologies such as ultrasound-assisted extraction (UAE), which is characterized by high efficiency of phytochemical extraction, shorter treatment time, and a much lower en…
Camellia japonica : A phytochemical perspective and current applications facing its industrial exploitation
2022
In response to the increased popularity of medicinal plants, a number of conservation groups are recommending the investigation on poorly characterized and widely distributed species, as it is the case of camellias. In particular, Camellia japonica L. is a widespread species found in Galicia (NW Spain), where it has been largely exploited with ornamental purposes. Recent findings on its phytochemical characterization showed thousands of bioactive ingredients, mostly represented by phenolic compounds, together with terpenoids, and fatty acids. These molecules present associated biological activities, acting as antioxidant, antimicrobial, anti-inflammatory, and anticancer agents. This review …
Primera y segunda y tercera partes de la Historia medicinal de las cosas que se traen de nuestras Indias occidentales, que siruen en medicina ; Trata…
1580
Sign.: A7, B-L8, [cristus]L8, M-V8, X3 Il·lustracions xil. Cada obra amb port. pròpia
Exercicis de Farmacognòsia
2019
El present document ha rebut una subvenció atorgada pel Servei de Política Lingüística de la Universitat de València, en el marc de la convocatòria anual d'incentius per a materials docents en valencià i anglés. Els exercicis proposats inclouen aspectes relatius als metabòlits secundaris de plantes medicinals. Es tracta de resoldre una sèrie de qüestions sobre estructura química, biosíntesi, extracció, separació, identificació i activitat farmacològica de productes naturals d'origen biològic, fonamentalment vegetal. La major part dels exercicis s'han seleccionat a partir de publicacions en revistes de la màxima qualificació dins de l'àrea científica, sempre tenint en compte la plena adequac…
In Vitro and In Vivo Regulation of SRD5A mRNA Expression of Supercritical Carbon Dioxide Extract from Asparagus racemosus Willd. Root as Anti-Sebum a…
2022
Oily skin from overactive sebaceous glands affects self-confidence and personality. There is report of an association between steroid 5-alpha reductase gene (SRD5A) expression and facial sebum production. There is no study of the effect of Asparagus racemosus Willd. root extract on the regulation of SRD5A mRNA expression and anti-sebum efficacy. This study extracted A. racemosus using the supercritical carbon dioxide fluid technique with ethanol and investigated its biological compounds and activities. The A. racemosus root extract had a high content of polyphenolic compounds, including quercetin, naringenin, and p-coumaric acid, and DPPH scavenging activity comparable to that of the standa…