Chapter 4 Plant Essential Nutrients, Nutrient Composition in Soil, and Activity of Plant Metabolites

2016 ◽  
pp. 99-134
Author(s):  
Subhasish Das ◽  
Satya Sundar Bhattacharya
2018 ◽  
Author(s):  
International Food Policy Research Institute (IFPRI)

Author(s):  
A.N. Pampura ◽  
E.E. Varlamov

Продукты животного происхождения обладают наиболее сбалансированным комплексом необходимых нутриентов, поэтому их включение в пищевой рацион оправданно в различные возрастные периоды. Клинические проявления аллергии к данным продуктам крайне разнообразны. Одним из ключевых аспектов обозначенной проблемы является диагностика и оценка вероятности развития перекрестной реактивности. К пищевым продуктам животного происхождения, наиболее часто индуцирующим симптомы, относятся коровье молоко, куриное яйцо, рыба, моллюски, ракообразные, мясо млекопитающих. В представленной статье изложены данные об основных классах пищевых аллергенов животного происхождения, индуцирующих развитие перекрестных аллергических реакций. Описаны синдромы, связанные с перекрестной реактивностью: птица-яйцо , кошка-свинина , рыба-курица и -Gal-синдром/ синдром красного мяса .Animal foods products contain the most balanced complex of essential nutrients. The clinical manifestations of allergy to these products are varied. Key aspect of this problem is diagnostics and assessment of cross-reactivity. The food animal products that more often induce symptoms include cows milk, hens egg, fish, mollusks, crustaceans, mammalian meat. Data on the main classes of food animal allergens inducing the development of cross-allergic reactions as well as syndromes associated with cross-reactivity like bird-egg , cat-pork , fish-chicken and a-Gal-syndrome/ red meat syndrome are described in this article.


2020 ◽  
Vol 27 (11) ◽  
pp. 1836-1854 ◽  
Author(s):  
Elena Ancheeva ◽  
Georgios Daletos ◽  
Peter Proksch

Background: Endophytes represent a complex community of microorganisms colonizing asymptomatically internal tissues of higher plants. Several reports have shown that endophytes enhance the fitness of their host plants by direct production of bioactive secondary metabolites, which are involved in protecting the host against herbivores and pathogenic microbes. In addition, it is increasingly apparent that endophytes are able to biosynthesize medicinally important “phytochemicals”, originally believed to be produced only by their host plants. Objective: The present review provides an overview of secondary metabolites from endophytic fungi with pronounced biological activities covering the literature between 2010 and 2017. Special focus is given on studies aiming at exploration of the mode of action of these metabolites towards the discovery of leads from endophytic fungi. Moreover, this review critically evaluates the potential of endophytic fungi as alternative sources of bioactive “plant metabolites”. Results: Over the past few years, several promising lead structures from endophytic fungi have been described in the literature. In this review, 65 metabolites are outlined with pronounced biological activities, primarily as antimicrobial and cytotoxic agents. Some of these metabolites have shown to be highly selective or to possess novel mechanisms of action, which hold great promises as potential drug candidates. Conclusion: Endophytes represent an inexhaustible reservoir of pharmacologically important compounds. Moreover, endophytic fungi could be exploited for the sustainable production of bioactive “plant metabolites” in the future. Towards this aim, further insights into the dynamic endophyte - host plant interactions and origin of endophytic fungal genes would be of utmost importance.


2020 ◽  
Vol 19 (16) ◽  
pp. 1949-1965 ◽  
Author(s):  
Natalia Szkaradek ◽  
Daniel Sypniewski ◽  
Dorota Żelaszczyk ◽  
Sabina Gałka ◽  
Paulina Borzdziłowska ◽  
...  

Background: Natural plant metabolites and their semisynthetic derivatives have been used for years in cancer therapy. Xanthones are oxygenated heterocyclic compounds produced as secondary metabolites by higher plants, fungi or lichens. Xanthone core may serve as a template in the synthesis of many derivatives that have broad biological activities. Objective: This study synthesized a series of 17 new xanthones, and their anticancer potential was also evaluated. Methods: The anticancer potential was evaluated in vitro using a highly invasive T24 cancer cell line. Direct cytotoxic effects of the xanthones were established by IC50 estimation based on XTT assay. Results: 5 compounds of the total 17 showed significant cytotoxicity toward the studied cancer cultures and were submitted to further detailed analysis, including studies examining their influence on gelatinase A and B expression, as well as on the cancer cells migration and adhesion to an extracellular matrix. These analyses were carried out on five human tumor cell lines: A2780 (ovarian cancer), A549 (lung cancer), HeLa (cervical cancer), Hep G2 (liver cancer), and T24 (urinary bladder cancer). All the compounds, especially 4, showed promising anticancer activity: they exhibited significant cytotoxicity towards all the evaluated cell lines, including MCF-7 breast cancer, and hindered migration-motility activity of cancer cells demonstrating more potent activity than α-mangostin which served as a reference xanthone. Conclusion: These results suggest that our xanthone derivatives may be further analyzed in order to include them in cancer treatment protocols.


2021 ◽  
Vol 97 ◽  
pp. 103155
Author(s):  
Diego Melo-Durán ◽  
José Francisco Pérez ◽  
Gemma González-Ortiz ◽  
Sandra Villagómez-Estrada ◽  
Michael R. Bedford ◽  
...  
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