scholarly journals Current Knowledge and Perspectives of Pyrrolizidine Alkaloids in Pharmacological Applications: A Mini-Review

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1970
Author(s):  
Xianqin Wei ◽  
Weibin Ruan ◽  
Klaas Vrieling
Keyword(s):  
Secondary Metabolites ◽  
Pyrrolizidine Alkaloids ◽  
Current Knowledge ◽  
Biological Activities ◽  
New Drugs ◽  
Pharmacological Properties ◽  
Neurological Damage

Pyrrolizidine alkaloids (PAs) are a widespread group of secondary metabolites in plants. PAs are notorious for their acute hepatotoxicity, genotoxicity and neurological damage to humans and animals. In recent decades, the application of PAs for beneficial biological activities to cure disease has drawn greater attention. Here, we review the current knowledge regarding the pharmacological properties of PAs and discuss PAs as promising prototypes for the development of new drugs.

scholarly journals Loranthus micranthusLinn.: Biological Activities and Phytochemistry

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Soheil Zorofchian Moghadamtousi ◽  
Maryam Hajrezaei ◽  
Habsah Abdul Kadir ◽  
Keivan Zandi
Keyword(s):  
Medicinal Plant ◽  
Mineral Nutrition ◽  
Current Knowledge ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Pharmacological Properties ◽  
Host Trees ◽  
Trees And Shrubs ◽  
Respective Host

Loranthus micranthusLinn. is a medicinal plant from the Loranthaceae family commonly known as an eastern Nigeria species of the African mistletoe and is widely used in folkloric medicine to cure various ailments and diseases. It is semiparasitic plant because of growing on various host trees and shrubs and absorbing mineral nutrition and water from respective host. Hence, the phytochemicals and biological activities ofL. micranthusdemonstrated strong host and harvesting period dependency. The leaves have been proved to possess immunomodulatory, antidiabetic, antimicrobial, antihypertensive, antioxidant, antidiarrhoeal, and hypolipidemic activities. This review summarizes the information and findings concerning the current knowledge on the biological activities, pharmacological properties, toxicity, and chemical constituents ofLoranthus micranthus.

scholarly journals Partial Purification and Characterization of Albain 1, a Triterpene with Antimicrobial Activity, from the Wood Extract of Avicennia alba Blume

2020 ◽  
pp. 38-48
Author(s):  
Moumita Choudhury ◽  
Kalishankar Mukherjee ◽  
Arnab De ◽  
Amalesh Samanta ◽  
Amit Roy
Keyword(s):  
Antimicrobial Activity ◽  
Secondary Metabolites ◽  
1H Nmr ◽  
Biological Activities ◽  
New Drugs ◽  
Partial Purification ◽  
Molecular Formula ◽  
Pharmaceutical Industries ◽  
Wood Extract ◽  
Avicennia Alba

Secondary metabolites of plants are important resources for development of new drugs. Mangrove plants are very well known sources of wide variety of secondary metabolites. Many of these secondary metabolites from mangroves have been found to possess significant biological activities where human health is concerned. Avicennia alba Blume is one such mangrove plant with reports of having many such secondary metabolites of clinical and commercial interests. Aim: To evaluate antimicrobial activity potential of A. alba wood extract and to isolate new bioactive constituent(s) responsible for such biological activity. Methodology: Preliminary screenings of antimicrobial activities in different organic solvent extracts of A. alba wood tissue were done by TLC-bioautography method and phytochemical nature of the antimicrobial constituent(s) in the extracts have been studied. One compound exhibiting significant antimicrobial activity, named as Albain 1, has been isolated. MIC value has been determined for Albain 1. The purity and structure of Albain 1 have been determined by HPLC, 1H NMR, FTIR and HRMS etc. analysis. Results: 1H NMR, FTIR and HRMS analysis have found out that the isolated compound Albain 1 is a triterpene and the molecular formula is C30H48O4. It has exhibited remarkable antimicrobial activity against Bacillus cereus, Bacillus polymyxa, Bacillus pumilas (MIC 125 μg / ml). Conclusion: The observed antimicrobial activity of the isolated fraction of A. alba offer great potentials in pharmaceutical industries.

scholarly journals Assessment of Secondary Metabolites with Different Uses of Fenugreek

2021 ◽  
Author(s):  
Gulsum Yaldiz ◽  
Mahmut Camlica
Keyword(s):  
Secondary Metabolites ◽  
Biological Activities ◽  
New Drugs ◽  
Herbal Drug ◽  
Primary Metabolite ◽  
Food Industries ◽  
Golden Yellow ◽  
Therapeutic Properties ◽  
Modern Breeding ◽  
Nutraceutical Properties

Fenugreek (Trigonella foenum-graecum) is an annual medicinal plant with trifoliate leaves, a branched stem, white flowers, rooted tubers, and golden yellow seed belonging to Fabaceae family. Fenugreek is used in different industries such as pharmaceutical, nutraceutical and food industries as an ancient crop plant. Fenugreek is grown as a medicinal herb in many countries and has antioxidant, hypoglycemic, hypercholesterolemia, stomach protective, chemopreventive, laxative and appetite stimulating properties. In recent years, many important studies have been conducted on the biological activities and therapeutic properties of fenugreek mainly secondary metabolites such as alkaloids, flavonoids, steroids and saponins. These compounds are used for multipurpose uses in different industries and also appreciated by scientists. Based on these several health usefulness as discussed in review, fenugreek might be a good candidate for a herbal drug and used for preparation of new drugs. In this review, secondary metabolites used in different industries of fenugreek will be discussed and general benefits of them will be expressed within the all significant aspect of fenugreek as clearly. This review also highlights the traditional uses and nutraceutical properties (antioxidant activity, antibacterial, antifungal, anticancer hypoglemic effects and anti-inflammatory and immunological activity) of fenugreek. These uses and effect properties of fenugreek have been discussed and researchable areas were implied to depending on the previous studies. In the future, studies on fenugreek are needed some important applications to increasing the popularity of fenugreek. In this context, researchers should be focused on secondary and primary metabolite studies in fenugreek seeds and leaves. In addition to these, fenugreek germplasm should be collected and subjected to intensive selection via modern breeding programs and new fenugreek genotypes with desired properties should be obtained.

Ascidian halogen-containing secondary metabolites from the family didemnidae

2019 ◽  
Vol 17 (2) ◽  
pp. 97-130
Author(s):  
Miljana Djordjevic ◽  
Niko Radulovic
Keyword(s):  
Secondary Metabolites ◽  
Total Synthesis ◽  
Current Knowledge ◽  
Structural Complexity ◽  
Structural Diversity ◽  
Pharmacological Properties ◽  
Pharmacological Activities ◽  
The Family ◽  
Biological Tests ◽  
Brominated Compounds

This review summarizes current knowledge concerning the isolation, structural elucidation, biological/pharmacological activities, and total synthesis of halogen-containing secondary metabolites isolated from ascidians of the family Didemnidae. Overall, 81 compounds are presented, displaying great structural diversity and possessing a number of significant biological/pharmacological properties. In addition to the most numerous brominated compounds, chlorinated and iodinated ones were also found. The most prolific genus in regard to the number of published papers and isolated molecules is the genus Didemnum, which was treated separately from the rest of the genera of the ascidian family. The structural complexity of the isolated metabolites prompted a number of synthetic endeavors that not only provided conclusive proof of the structure of the metabolites but also enabled the biological tests and the possible application of these metabolites.

Toxicity of secondary metabolites

2019 ◽  
Vol 4 (12) ◽  
Author(s):  
Abraham Madariaga-Mazón ◽  
Ricardo Bruno Hernández-Alvarado ◽  
Karla Olivia Noriega-Colima ◽  
Adriana Osnaya-Hernández ◽  
Karina Martinez-Mayorga
Keyword(s):  
Secondary Metabolites ◽  
Biological Activities ◽  
Primary Source ◽  
Toxicity Assessment ◽  
New Drugs ◽  
Human Beings ◽  
Food Preservatives ◽  
Living Organisms

Abstract Secondary metabolites, commonly referred to as natural products, are produced by living organisms and usually have pharmacological or biological activities. Secondary metabolites are the primary source for the discovery of new drugs. Furthermore, secondary metabolites are also used as food preservatives, biopesticides or as research tools. Although secondary metabolites are mainly used by their beneficial biological activity, the toxicity of some of them may limit their use. The toxicity assessment of any compound that is prone to be used in direct contact with human beings is of vital importance. There is a vast spectrum of experimental methods for toxicity evaluation, including in vitro and in vivo methodologies. In this work, we present an overview of the different sources, bioactivities, toxicities and chemical classification of secondary metabolites, followed by a sketch of the role of toxicity assessment in drug discovery and agrochemistry.

scholarly journals Feedborne Mycotoxins Beauvericin and Enniatins and Livestock Animals

Toxins ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 32
Author(s):  
Ludmila Křížová ◽  
Kateřina Dadáková ◽  
Michaela Dvořáčková ◽  
Tomáš Kašparovský
Keyword(s):  
Secondary Metabolites ◽  
Current Knowledge ◽  
Biological Activities ◽  
Animal Health ◽  
Cereal Grains ◽  
Animal Tissues ◽  
Penicillium Species ◽  
And Performance ◽  
Carry Over

Mycotoxins are secondary metabolites produced by several species of fungi, including the Fusarium, Aspergillus, and Penicillium species. Currently, more than 300 structurally diverse mycotoxins are known, including a group called minor mycotoxins, namely enniatins, beauvericin, and fusaproliferin. Beauvericin and enniatins possess a variety of biological activities. Their antimicrobial, antibiotic, or ionoforic activities have been proven and according to various bioassays, they are believed to be toxic. They are mainly found in cereal grains and their products, but they have also been detected in forage feedstuff. Mycotoxins in feedstuffs of livestock animals are of dual concern. First one relates to the safety of animal-derived food. Based on the available data, the carry-over of minor mycotoxins from feed to edible animal tissues is possible. The second concern relates to detrimental effects of mycotoxins on animal health and performance. This review aims to summarize current knowledge on the relation of minor mycotoxins to livestock animals.

scholarly journals Secondary Metabolites of the Genus Didemnum: A Comprehensive Review of Chemical Diversity and Pharmacological Properties

Marine Drugs ◽  
2020 ◽  
Vol 18 (6) ◽  
pp. 307
Author(s):  
Diaa T. A. Youssef ◽  
Hadeel Almagthali ◽  
Lamiaa A. Shaala ◽  
Eric W. Schmidt
Keyword(s):  
Secondary Metabolites ◽  
Marine Invertebrates ◽  
Biological Activities ◽  
Chemical Diversity ◽  
Pharmacological Properties ◽  
Chemical Methods ◽  
Pharmacological Activities ◽  
Comprehensive Review ◽  
The Central Nervous System ◽  
Geographical Locations

Tunicates (ascidians) are common marine invertebrates that are an exceptionally important source of natural products with biomedical and pharmaceutical applications, including compounds that are used clinically in cancers. Among tunicates, the genus Didemnum is important because it includes the most species, and it belongs to the most speciose family (Didemnidae). The genus Didemnum includes the species D. molle, D. chartaceum, D. albopunctatum, and D. obscurum, as well as others, which are well known for their chemically diverse secondary metabolites. To date, investigators have reported secondary metabolites, usually including bioactivity data, for at least 69 members of the genus Didemnum, leading to isolation of 212 compounds. Many of these compounds exhibit valuable biological activities in assays targeting cancers, bacteria, fungi, viruses, protozoans, and the central nervous system. This review highlights compounds isolated from genus Didemnum through December 2019. Chemical diversity, pharmacological activities, geographical locations, and applied chemical methods are described.

scholarly journals Phytoconstituents and Biological Activities of Garcinia Dulcis (Clusiaceae): A Review

2017 ◽  
Vol 12 (3) ◽  
pp. 1934578X1701200 ◽  
Author(s):  
Nanthaphong Khamthong ◽  
Nongporn Hutadilok-Towatana
Keyword(s):  
Current Knowledge ◽  
Biological Activities ◽  
Fruit Tree ◽  
Pharmacological Properties ◽  
Tropical Fruit ◽  
Anti Cancer ◽  
History Of ◽  
Phytochemical Constituents ◽  
History Of Use ◽  
Review Current

Garcinia dulcis (Roxb.) Kurz is a tropical fruit tree native to Southeast Asia where it has a long history of use as a traditional medicine for the treatment of ailments such as lymphatitis, parotitis, struma, scurvy, cough, and sore throat. Despite its medicinal values, this plant is not well known and rarely found nowadays. Research on the phytochemical constituents and biological activities of G. dulcis have demonstrated that various parts of the plant contain an abundance of bioactive compounds mainly xanthones and flavonoids, with significant pharmacological properties such as anti-atherosclerosis, anti-bacterial, anti-cancer, anti-hypertension, and anti-malarial. In the present review, current knowledge of the phytochemistry of G. dulcis and biological activities of its active constituents based on the available literature are summarized in order to explore application potentials and prospective research works on this plant.

Bioactive Metabolites from Pathogenic and Endophytic Fungi of Forest Trees

2018 ◽  
Vol 25 (2) ◽  
pp. 208-252 ◽  
Author(s):  
Marco Masi ◽  
Lucia Maddau ◽  
Benedetto Teodoro Linaldeddu ◽  
Bruno Scanu ◽  
Antonio Evidente ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Endophytic Fungi ◽  
Biological Activities ◽  
Terrestrial Ecosystems ◽  
Biological Properties ◽  
Research Literature ◽  
New Drugs ◽  
Bioactive Metabolites ◽  
Bibliographic Databases ◽  
Forest Trees

Background: Fungi play an important role in terrestrial ecosystems interacting positively or negatively with plants. These interactions are complex and the outcomes are different depending on the fungal lifestyles, saprotrophic, mutualistic or pathogenic. Furthermore, fungi are well known for producing secondary metabolites, originating from different biosynthetic pathways, which possess biological properties of considerable biotechnological interest. Among the terrestrial ecosystems, temperate forests represent an enormous reservoir of fungal diversity. This review will highlight the goldmine of secondary metabolites produced by pathogenic and endophytic fungi of forest trees with focus on their biological activities. Methods: A structured search of bibliographic databases for peer-reviewed research literature was undertaken using a research discovery application providing access to a large and authoritative source of references. The papers selected were examined and the main results were reported and discussed. Results: Two hundred forthy-one papers were included in the review, outlined a large number of secondary metabolites produced by pathogenic and endophiltic fungi and their biological activities, including phytotoxic, antifungal, antioomycetes, antibacterial, brine shrimp lethality, mosquito biting deterrence and larvicidal, cytotoxic, antiproliferative and many other bioactivities. Conclusion: The findings of this review confirm the importance of secondary metabolites produced by pathogenic and endophytic fungi from forest plants growing in temperate regions as an excellent prospects to discover compounds with new bioactivities and mode of actions. In addition, the potential of some metabolites as a source of new drugs and biopesticides is underlined.

Isatin hybrids and Their Pharmacological Investigations

2020 ◽  
Vol 20 ◽  
Author(s):  
Bhushan D. Varpe ◽  
Amol A. Kulkarni ◽  
Shailaja B. Jadhav ◽  
Anil S. Mali ◽  
Shravan Y. Jadhav
Keyword(s):  
Biological Activities ◽  
New Drugs ◽  
Pharmacological Properties ◽  
Anticancer Activities ◽  
Structure Activity Relationships ◽  
Structure Activity ◽  
Molecular Hybrids ◽  
Anti Hiv

Abstract:: Hybridization is an important strategy to design molecules that can be effectively used to treat fatal diseases known to mankind. Molecular hybrids and their pharmacological investigations aided to discover several potent isatin (Indole 2, 3 dione) derivatives with anti-HIV, antimalarial, antitubercular, antibacterial, and anticancer activities. Indole‐2,3‐dione and their derivatives have diverse pharmacological properties and have a prominent role in the discovery of new drugs. To understand the various approaches in designing new molecules based on isatin nucleus analysis of various pharmacophore hybrids, spacers/linkers between pharmacophores and isatin for hybridization and their biological activities is important. This review discusses the progress in developing isatin hybrids as biologically effective agents, and their crucial aspects of design and structure-activity relationships.

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