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Ancient and Traditional Foods, Plants, Herbs and Spices used in Cancer
The use of different foods, herbs, and spices to treat or prevent disease has been recorded for thousands of years. Egyptian papyrus, hieroglyphics and ancient texts from the Middle East have described the cultivation and preparations of herbs and botanicals to “cure the sick.” There are even older records from China and India. Some ancient scripts describe the use of medicinal plants which have never been seen within European cultures. Indeed, all ancient civilizations have pictorial records of different foods, herbs, and spices being used for medical purposes. However, there are fundamental questions pertaining to the scientific evidence for the use of these agents or their extracts in...
Fighting Multidrug Resistance with Herbal Extracts, Essential Oils and Their Components
Leishmaniasis is an infectious disease caused by parasites belonging to the Leishmania genus. This disease has a prevalence that exceeds 12 million, and approximately 350 million individuals are currently residing in areas at risk for contracting the infection. The standard drugs employed in the treatment pose serious side effects for patients. Moreover, some reports suggested that the Leishmania species present different degrees of resistance to conventional drugs, which justifies the ongoing search for novel leishmanicidal molecules. In only a few decades, the available research pertaining to plant-derived leishmanicidal compounds has increased considerably; however, the majority of bioguided studies have only shown antileishmanial activity in vitro, thus ignoring the potential in vivo effects of different classes of plant-derived compounds on Leishmania species. This chapter will discuss the main findings of works published from 2002 to 2012 on purified plant compounds and their leishmanicidal effects in vivo.
Ancient and Traditional Foods, Plants, Herbs and Spices used in the Middle East
The use of different foods, herbs, and spices to treat or prevent disease has been recorded for thousands of years. Egyptian papyrus, hieroglyphics and ancient texts from the Middle East have described the cultivation and preparations of herbs and botanicals to “cure the sick.” There are even older records from China and India. Some ancient scripts describe the use of medicinal plants which have never been seen within European cultures. Indeed, all ancient civilizations have pictorial records of different foods, herbs, and spices being used for medical purposes. However, there are fundamental questions and issues pertaining to the scientific evidence for the use of these agents or their ...
Biossíntese de neolignanas benzofurânicas em Piper regnelli (Piperaceae).
O trabalho descreve o estudo do metabolismo secundário de Píper regnellí. Os principais metabólitos de Píper regnellí são 3 fenilpropanóides, 4 neolignanas di-hidrobenzofurânicas, entre as quais conocarpano, epi-conocarpano e regneilina; 3neolignanas benzofurânicas-. eupomatenóide-6, upomatenóide-5 e eupomatenóide-3, e 3 dinor-neolignanas- decurrenal, epí-decurrenal e um éster metílico. Com base nas substâncias isoladas, foi proposta uma rota biossintética, onde o fenilpropanóide p-hidróxi-propenil-benzeno é sugerido como o precursor da neolignana conocarpano. Esta rota biossintética foi avaliada, utilizando-se preparações enzimáticas de folhas de P. regnellíi, onde...
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