scholarly journals Vasorelaxant mode of action of dichloromethane-soluble extract from Agastache mexicana and its main bioactive compounds

2016 ◽  
Vol 54 (12) ◽  
pp. 2807-2813 ◽  
Author(s):  
Angélica Flores-Flores ◽  
Oswaldo Hernández-Abreu ◽  
María Yolanda Rios ◽  
Ismael León-Rivera ◽  
Berenice Aguilar-Guadarrama ◽  
...  
2019 ◽  
Vol 24 (3) ◽  
pp. 213-223 ◽  
Author(s):  
Raimo Franke ◽  
Bettina Hinkelmann ◽  
Verena Fetz ◽  
Theresia Stradal ◽  
Florenz Sasse ◽  
...  

Mode of action (MoA) identification of bioactive compounds is very often a challenging and time-consuming task. We used a label-free kinetic profiling method based on an impedance readout to monitor the time-dependent cellular response profiles for the interaction of bioactive natural products and other small molecules with mammalian cells. Such approaches have been rarely used so far due to the lack of data mining tools to properly capture the characteristics of the impedance curves. We developed a data analysis pipeline for the xCELLigence Real-Time Cell Analysis detection platform to process the data, assess and score their reproducibility, and provide rank-based MoA predictions for a reference set of 60 bioactive compounds. The method can reveal additional, previously unknown targets, as exemplified by the identification of tubulin-destabilizing activities of the RNA synthesis inhibitor actinomycin D and the effects on DNA replication of vioprolide A. The data analysis pipeline is based on the statistical programming language R and is available to the scientific community through a GitHub repository.


Biomolecules ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 209 ◽  
Author(s):  
Sofiene Ben Kaab ◽  
Laurence Lins ◽  
Marwa Hanafi ◽  
Iness Bettaieb Rebey ◽  
Magali Deleu ◽  
...  

The use of chemical herbicides could not only potentially induce negative impacts on the environment, animals, and human health, but also increase the weed resistance to herbicides. In this context, the use of plant extracts could be an interesting and natural alternative to chemical products. It is important to understand the mode of action of their bioactive compounds. This is why we have studied the herbicidal effect of Cynara cardunculus crude extract in terms of inhibition of weeds’ seedling growth and its impact on physiological parameters of treated plantlets, like conductivity, dry weight, and fluorescence, and biochemical parameters linked to oxidative stress. We have observed that C. cardunculus crude extract induces oxidative stress in the treated plants and consequently disturbs the physiological and biochemical functions of the plant cells. We have investigated the herbicidal activity of three bioactive compounds, naringenin, myricitrin, and quercetin, from the C. cardunculus crude extract. In both pre- and post-emergence trials, naringenin and myricitrin were significantly more phytotoxic than quercetin. We suggest that their differential initial interaction with the plant’s plasma membrane could be one of the main signals for electrolyte leakage and production of high levels of phenoxyl radicals.


2020 ◽  
Vol 9 (5) ◽  
pp. e199953294
Author(s):  
Aline Torres da Silva ◽  
Felipe Torres da Silva ◽  
Jordana dos Santos Alves ◽  
Daiane Sousa Peres ◽  
Lismaíra Gonçalves Caixeta Garcia ◽  
...  

The objective of this work was to prepare a hydrosoluble base extract of baru nut and to evaluate the physical and chemical stability, as well as the content of bioactive compounds. Three formulations with different proportions of baru:mineral water were prepared: 1:6, 1:8 and 1:10. Baru almonds were purchased from the local market in Rio Verde, GO, Brazil. The extracts were prepared with water, centrifuged, pasteurized, packaged and refrigerated at 5ºC. The pH, titratable acidity, colour parameters, antioxidant activity and total phenolic content of all formulations. Satisfactory levels of the bioactive compounds were found in all the proposed formulations of water soluble extract of baru. The 1:6 formulation presented minor changes throughout the ten days of storage. The processing used in this study was useful for obtaining the water soluble extract of baru.


Author(s):  
Alka Rani ◽  
Khem Chand Saini ◽  
Felix Bast ◽  
Sunita Varjani ◽  
Sanjeet Mehariya ◽  
...  

Microorganisms including actinomycetes, archaea, bacteria, fungi, yeast, and micro algae are the auspicious source of vital bioactive compounds. In this review, the existing state of the art re-garding antimicrobial molecules from microorganisms has been summarized. The potential an-timicrobial compounds from actinomycetes, particularly Streptomyces sp.; archaea; fungi including endophytic and marine-derived fungi, mushroom; yeast, and microalgae were briefly described. Furthermore, this review briefly summarized the activity and mode of action of bacteriocins, a ribosomally synthesized antimicrobial peptides product of Eurotium sp., Streptomyces parvulus, S. thermophiles, Lactococcus lactis, etc. Bacteriocins have inherent properties such as targeting multi-ple-drug resistant pathogens, which allows them to be considered next-generation antibiotics. Similarly, Glarea lozoyensis derived antifungal lipohexpeptides i.e., pneumocandins, inhibits 1,3-β-glucan synthase of the fungal cell wall and acts as a precursor for the synthesis of caspo-fungin, is also elaborated. In conclusion, this review highlights the possibility of using microor-ganisms as an antimicrobial resource for biotechnological, nutraceutical, and pharmaceutical ap-plications. However, more investigations are still required to separate, purify, and characterize these bioactive compounds and transfer these primary drugs into clinically approved antibiotics.


2021 ◽  
pp. 143-158
Author(s):  
Sadaf Choudhary ◽  
Andleeb Zehra ◽  
Mohammad Mukarram ◽  
Kaiser Iqbal Wani ◽  
M. Naeem ◽  
...  

2009 ◽  
Vol 27 (4) ◽  
pp. 369-377 ◽  
Author(s):  
Cheuk Hei Ho ◽  
Leslie Magtanong ◽  
Sarah L Barker ◽  
David Gresham ◽  
Shinichi Nishimura ◽  
...  

2012 ◽  
Vol 20 (6) ◽  
pp. 1929-1939 ◽  
Author(s):  
Marisa A. Azad ◽  
Gerard D. Wright

Author(s):  
M.O. Fatope ◽  
Salma M. Z. Al-Kindi ◽  
Abdulrahman O. Abdulnour

The zeal to conquer human, agronomic, and veterinary diseases or pests has always sustained research interests directed at finding new medications from under explored biodiversity. The adoption of bioassay methods, which correlate with prevention, inhibition and reversal of diseases or elimination of pests, in screening natural products for bioactive compounds is critical to the discovery of new medications. This article focuses on areas of natural products chemistry that connect academia with industry. It discusses the technical skills needed to find bioactive compounds from microbes, marine invertebrates, plants and insects, highlighting the mode of action of selected bioactive compounds and bioassay models for detecting them. It also reviews methods and prospects of genetic manipulation of organisms to produce unnatural natural products of therapeutic importance.


Cell ◽  
2006 ◽  
Vol 126 (3) ◽  
pp. 611-625 ◽  
Author(s):  
Ainslie B. Parsons ◽  
Andres Lopez ◽  
Inmar E. Givoni ◽  
David E. Williams ◽  
Christopher A. Gray ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document