Download or read book Development of Artemisia Annua L as a Crop for Production of the Antimalarial Drug Artemisinin written by Corrinne Burns and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Artemisia annua Pharmacology and Biotechnology written by Tariq Aftab and published by Springer Science & Business Media. This book was released on 2013-11-26 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Artemisinin, a sesquiterpene lactone originally extracted from the medicinal plant Artemisia annua L., is an effective antimalarial agent, particularly for multi-drug resistant and cerebral malaria. However, the concentration of artemisinin in the plant is very low. Because the chemical synthesis of artemisinin is complicated and not economically feasible in view of the poor yield of the drug, the intact plant remains the only viable source of artemisinin production. Therefore, it is necessary to increase the concentration of artemisinin in A. annua to reduce the cost of artemisinin based antimalarial drugs. Plant scientists have focused their efforts on A. annua for a higher artemisinin crop yield. With the present volume, we are bringing together the research which is being done on this plant throughout the world and future possibilities for scientists and researchers who want to work on it.
Download or read book From Artemisia annua L to Artemisinins written by Youyou Tu and published by Academic Press. This book was released on 2017-07-08 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approx.426 pages Approx.426 pages
Download or read book Artemisia annua written by Tariq Aftab and published by CRC Press. This book was released on 2017-12-14 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Artemisia annua is a well-known medicinal plant that has been utilized for a number of purposes, including malaria, for centuries. This is the first comprehensive book to cover the importance of Artemisia annua in the global health crisis and in the treatment against diseases. A component and extract, artemisinin, is the source of other derivatives which are also suitable for pharmaceutical use. The present demand for artemisinin far outpaces its supply. Researchers are working globally towards improving artemisinin content in the plant by various means. Artemisia annua: Prospects, Applications and Therapeutic Uses highlights the different approaches, including ‘omics', that are being used in current research on this immensely important medicinal plant. Providing comprehensive coverage of the agricultural and pharmaceutical uses of this plant, Artemisia annua will be essential reading for botanists, plant scientists, herbalists, pharmacognosists, pharmacologists and natural product chemists.
Download or read book Artemisia written by Colin W. Wright and published by CRC Press. This book was released on 2001-10-18 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of this genus, Artemisia examines all aspects of the herbs uses and applications, its mode of action and clinical importance. Following a comprehensive introduction to the genus, the book discusses the botanical, phytochemical and biological aspects of a number of important species of Artemisis. Considering that the discove
Download or read book Extraction of Artemisinin from Artemisia Annua written by Seid Yimer and published by . This book was released on 2013-01 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bachelor Thesis from the year 2008 in the subject Engineering - Chemical Engineering, grade: A, Bahir Dar University (Bahir Dar University Engineering Faculity), course: Chemical Engineering, language: English, abstract: Abstract Malaria disease is endemic in least developed countries like Ethiopia. The rapid development of drug-resistant malaria parasite strain leaves the need for new effective anti-malarial drugs. Artemisinin is a sesquiterpene lactone found in the leaves and flowers of plants Artemisia annua L and have different chemical structures and higher efficacy than others. The content of artemisinin is very small and from 0.5 to 1.2 % of dry weight of plants in Ethiopia. Extraction of artemisinin from Artemisia annua is mainly performed using hydrocarbon extraction processes. Extraction with Supercritical CO2, ethanol, ionic liquids, hydroflourocarbon HFC-134a and hexane extraction are extraction technologies and compared majorly in terms of their extraction efficiency, cost and drawback to environment. Since artemisinin is only present in the epidermis of the leaves, leaves were only washed on the outside by stirring appeared to be the most appropriate method and the first step in this research was solvent extraction using hexane. Step followed purify by repeated crystallization. Laboratory scale production data and procedures were listed for aremisinin extraction process. By using those data large scale production method was designed. And did material and energy balance calculations for large scale production process carried out by taking scientific approach followed by feasibility study. As a result my extractor was very large and it has 14.37m3 capacities it wasn't found in market. So I designed the required larger extractor that should fulfill the target of the project i.e. with simple, rapid, cost effective, environmental friendly and practical method for the isolation of artemisinin from Artemisia annua. The design the extractor I used the optimum
Download or read book Roots and Hormones Synergistic Control of Artemisinin Production in Artemisia Annua L Shoots written by Khanh Van T. Nguyen and published by . This book was released on 2011 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Artemisinin is a potent antimalarial drug produced in the plant Artemisia annua. Earlier reports suggested that the roots play a key role in artemisinin production; however, it was not clear if other factors actually affected production instead of roots. Here the role of roots and two phytohormones, NAA and BAP, were studied to determine what role each plays in artemisinin production in the plant. Rooted Artemisia annua shoots produced significantly more artemisinin, arteannuin B, and deoxyartemisinin, the end products in the pathway, than unrooted shoots. Although roots do not seem to affect the levels of precursors, artemisinic acid and dihydroartemisinic acid, or regulate the transcription of the genes in the pathway, rooted plants developed larger trichome sacs suggesting that the accumulation of end products is linked to the expansion of the trichome sac. Unrooted shoots are grown in shooting medium containing higher amount of MS salts, vitamins, sucrose and two potent phytohormones, NAA and BAP. Rooted shoots grown in rooting medium containing either one or both of these hormones showed that NAA increased production of arteannuin B in the young leaves and artemisinin in the mature leaves; in mature leaves, however, arteannuin B was inhibited by NAA. BAP induced production of both the precursors and the end products, except for artemisinin, in the young and/or mature leaves. When rooted shoots with their roots removed were grown in rooting medium containing either one of these hormones, artemisinin was significantly less in cultures grown with BAP while there were no differences in metabolite levels in cultures grown with NAA. Although the importance of roots on the artemisinin biosynthetic pathway cannot be concluded, these results help improve our understanding of artemisinin biosynthesis as may prove useful for improving artemisinin production in field-grown crops.
Download or read book Dried Whole Plant Artemisia Annua as a Novel Antimalarial Therapy written by Mostafa Ahmed Elfawal and published by . This book was released on 2014 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Malaria is one of the worst vector-borne parasitic diseases in the developing world. The World Health Organization (WHO) estimated that 215 million cases of malaria occurred, with >655,000 deaths; half the world's population is at risk of contracting the disease. Drugs are primary weapons for reducing malaria in human populations. Successful drugs are highly efficacious and inexpensive to manufacture synthetically. However, emergence of resistant parasites has repeatedly curtailed the lifespan of each drug that is developed and deployed. Currently, the most effective anti-malarial is artemisinin, which is extracted from the leaves of Artemisia annua. Due to poor pharmacokinetic properties and prudent efforts to curtail resistance to monotherapies, artemisinin is prescribed only in combination with other anti-malarials composing an Artemisinin Combination Therapy (ACT). Low yield in the plant, and the added cost of secondary anti-malarials in the ACT, make artemisinin costly for the developing world. As an alternative, we compared the efficacy of oral delivery of whole plant (WP) A. annua to a comparable dose of pure artemisinin in a rodent malaria model. We found that WP reduces parasitemia at least five fold more effectively than a comparable dose of purified drug, slows the evolution of malarial drug resistance in Plasmodium chabaudi infected mice, and is effective against already resistant Plasmodium yoelii (ART). This increased efficacy may result from the increase in the bioavailability of artemisinin in the blood of mice fed the whole plant, in comparison to those administered synthetic drug. When accompanied by plant material, more artemisinin enters the blood stream, demonstrating a beneficial effect of the plant matrix on the bioavailability of artemisinin. Increased efficacy and resilience against drug resistance may result from the synergistic benefits of other anti-malarial compounds in A. annua, such as flavonoids and terpenoids. Although effective against Plasmodium, neither WP nor artemisinin and artesunate are effective against Babesia microti. The differential response of B. microti and Plasmodium to artemisinins is likely the result of significant differences in their cell biology and metabolism of hemoglobin. Well-tolerated, and compatible with the public health imperative of forestalling evolution of drug resistance, inexpensive, locally grown and processed whole plant A. annua therapy might prove to be an effective addition to the global effort to reduce malaria morbidity and mortality.
Download or read book Gamma Irradiation Causes Variation and Stability of Artemisinin Content in Artemisia Annua Plants written by Wanchai De-Eknamkul and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Artemisinin is an anti-malarial sesquiterpene lactone isolated from Artemisia annua L., a traditional Chinese herb of the family Asteraceae. The plant contains relatively low artemisinin content, ranging from 0.01 to 0.8% of the plant dry weight, depending on the geographical origin, seasonal, and somatic variations. Ionizing radiation has been recognized as a powerful technique for plant improvement, especially in crop plants. This technique creates genetic variability in plants, which can be screened for desirable characteristics. Very little is known about the effect of gamma irradiation on the potential increase of artemisinin production in A. annua. In this study, 130 shoot tips excised from the population of in vitro A. annua plantlets (with an average leaf artemisinin content of 0.18 ± 0.09%) were exposed to 5 Gy 60Co gamma irradiation and subsequently transferred to a suitable medium for in vitro development of plantlets. The resulting 90 stable survived after four passages appeared to have a wide variation of artemisinin content, ranging from 0.02 to 0.68% of dry weight. All the viable plantlets were then transferred from the in vitro cultures to ex vitro conditions both in a greenhouse and an open field. A significant correlation was observed between artemisinin content among individual pairs of the vitro plantlets and ex vitro mature plants, with the correlation coefficient (R2) values of 0.915 for the greenhouse plants and 0.797 for the open field plants. Among these, the highest artemisinin-containing plant appeared to accumulate 0.84% artemisinin of dry weight in the open field, which is almost five times higher than the original plants. These results suggest that gamma irradiation with 5-Gy dose can produce viable variants of A. annua that can maintain the biosynthetic capability of artemisinin throughout the in vitro-ex vitro transfer and development of the first generation of mature plants.
Download or read book Medicinal Chemistry of Bioactive Natural Products written by Xiao-Tian Liang and published by John Wiley & Sons. This book was released on 2006-03-17 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current discoveries and research into bioactive natural products Medicinal Chemistry of Bioactive Natural Products provides a much-needed survey of bioactive natural products and their applications in medicinal chemistry. This comprehensive reference features articles by some of the world's leading scientists in the field on discovery, structure elucidation, and elegant synthetic strategies--developed for natural products--with an emphasis on the structure activity relationship of bioactive natural products. The topics have been carefully chosen on the basis of relevance to current research and to importance as clinicially useful agents. Rather than attempting to be a comprehensive encyclopedia of bioactive natural products, Medicinal Chemistry of Bioactive Natural Products guides the reader to the key developments in the field. By providing not only practical detail but a historical perspective on the chemistry and biology of the compounds under consideration, the book serves as a handy resource for researchers in their own work developing pharmaceuticals, and as an inspiring introduction for young scientists to the dynamic field of bioactive natural products research. Enhanced by examples with updated research results, the discussion covers such topics as: * The chemistry and biology of epothilones * Vancomycin and other glycopeptide antibiotic derivates * Antitumor and other related activities of Taxol and its analogs * The antimalarial properties of the traditional Chinese medicine, Quinghaosu (artemisinin) * Huperzine A: A natural drug for the treatment of Alzheimer's disease * The medicinal chemistry of ginkgolides from Ginkgo biloba * Recent progress in Calophyllum coumarins as potent anti-HIV agents * Plant-derived anti-HIV agents and analogs * Chemical synthesis of annonaceous acetogenins and their structurally modified mimics
Download or read book Medicinal Plants in Mongolia written by WHO Regional Office for the Western Pacific and published by World Health Organization. This book was released on 2014-02-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume, one in a series on medicinal plants in Member States of WHO's Western Pacific Region, introduces Mongolian traditional medicine and details the nature and uses of medicinal plants found in the country. The book focuses on the medicinal plants used most commonly in Mongolia. Each monograph contains color pictures of the plant and a wide array of information--from the scientific and English names of plants to their microscopic characteristics. While helping record and document traditional medicine practices, this book contributes to the understanding of the value of medicinal plants in Mongolia and increases the evidence base for the safe and efficacious use of herbs in health care.
Download or read book Use of Gamma Radiation Techniques in Peaceful Applications written by Basim Almayahi and published by BoD – Books on Demand. This book was released on 2019-10-02 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with gamma radiation in many fields, which encompasses diverse factors that affect human and animal life inside an environment. These fields include nuclear and medical physics, industrial processes, environmental sciences, radiation biology, radiation chemistry, radiotherapy, agriculture and forestry, sterilization, the food industry, and so on. The book covers an overview of gamma background radiations and measurements, radioactive decay, radioecological applications in environmental gamma dosimetry, gamma-ray interaction, monocolor gamma, influence of gamma radiation on dynamical mechanical properties, influence of low-dose gamma irradiation treatments on microbial decontamination, gamma-ray ionization enhancement in tissues, gas-filled surge arresters, modeling plastic deformation located in irradiated materials, radiotherapy, application of radiation and genetic engineering techniques, and gamma-ray measurements using unmanned aerial systems. This book is expected to benefit undergraduate and postgraduate students, researchers, teachers, practitioners, policy makers, and every individual who has a concern for a healthy life.
Download or read book Plant Cell and Tissue Differentiation and Secondary Metabolites written by Kishan Gopal Ramawat and published by Springer. This book was released on 2020-12-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference work provides a comprehensive review of cell and tissue differentiation and its role in the formation of specific secondary metabolites. Divided into five sections, this book covers the main cellular processes involved in the biosynthesis of secondary metabolites. Chapters from expert contributors offer specific case studies of cell and tissue differentiation, examines secondary metabolites in shoot and root cultures, and present new scientific insights and original technologies with applications in medicinal plants and in plant biotechnology. Students, scholars and researchers with an interest in the fields of botany, agriculture, pharmacy, biotechnology and phytochemistry will find this book an important account. This book will also engage professionals working in plant-based industry.
Download or read book Artemisinin From Traditional Chinese Medicine to Artemisinin Combination Therapies Four Decades of Research on the Biochemistry Physiology and Breeding of Artemisia annua written by Tomasz Czechowski and published by Frontiers Media SA. This book was released on 2020-12-04 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book WHO Monograph on Good Agricultural and Collection Practices GACP for Artemisia Annua L written by and published by . This book was released on 2006 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Bioactive Compounds written by Rajeshwar P. Sinha and published by Academic Press. This book was released on 2020-10-06 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural Bioactive Compounds: Technological Advancements deals with the latest breakthroughs in the field of screening, characterization and novel applications of natural bioactive compounds from diverse group of organisms ranging from bacteria, viruses, cyanobacteria, algae, fungi, bryophytes, higher plants, sponges, corals and fishes. Written by some of the most reputed scientists in the field, this book introduces the reader to strategies and methods in the search for bioactive natural products. It is an essential read for researchers and students interested in bioactive natural products, their biological and pharmacological properties, their possible use as chemopreventive or chemotherapeutic agents, and other future potential applications. Explores natural sources of bioactive compounds, including cyanobacteria, bacteria, viruses, fungi and higher plants Discusses the potential applications of biological products, such as their use in medicine (antibiotics, cancer research, immunology), as food additives, supplements and technological substances Analyzes the contributions of emerging or developing technologies for the study of bioactive natural compounds (characterization and purification)
Download or read book Medicinal and Aromatic Crops written by Valtcho D. Jeliazkov and published by ACS Symposium. This book was released on 2017-11-02 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Distributed in print by Oxford University Press."
