scholarly journals Callus of American ginseng (Panax quinquefolius) as a source of ginsenosides – medicinal secondary metabolites

2013 ◽  
Vol 50 (1) ◽  
pp. 27-34 ◽  
Author(s):  
Ewa Kochan ◽  
Aleksander Chmiel
Keyword(s):  
North America ◽  
Secondary Metabolites ◽  
Traditional Medicine ◽  
Panax Ginseng ◽  
American Ginseng ◽  
Panax Quinquefolius ◽  
In Vitro Methods ◽  
Derivatives Of ◽  
Active Substances

Abstract:Asian ginseng (Panax ginseng) and American ginseng (P. quinquefolius) are valuable medicinal herbs whose roots have been used for ages in traditional medicine in China and North America as vitalizing and stimulating agents. The roots are obtained mainly from field cultivation, which is a slow (5-7 years long), laborious, and troublesome process; so in vitro methods started to be used to produce ginseng biomass. In our study, non-organogenic callus of P. quinquefolius synthesized the same active substances like field roots, for more than 6 years. The ginsenosides are derivatives of protopanaxadiol (Rb1, Rb2, Rc, Rd) or protopanaxatriol (Rg1, Re). The synthesis of Rg1and Re metabolites is preferred in calli cultured in the dark and with ageing of culture.

Synthesis of Novel 1,2,3-Triazole Derivatives of Isocoumarins and 3,4-Dihydroisocoumarin with Potential Antiplasmodial Activity In Vitro

2020 ◽  
Vol 16 ◽  
Author(s):  
Lucas da Silva Santos ◽  
Matheus Fillipe Langanke de Carvalho ◽  
Ana Claudia de Souza Pinto ◽  
Amanda Luisa da Fonseca ◽  
Julio César Dias Lopes ◽  
...  
Keyword(s):  
Triazole Ring ◽  
Antiplasmodial Activity ◽  
World Health ◽  
Dipolar Cycloaddition ◽  
Terminal Alkynes ◽  
The World ◽  
Ic50 Values ◽  
Derivatives Of ◽  
Active Substances

Background: Malaria greatly affects the world health, having caused more than 228 million cases only in 2018. The emergence of drug resistance is one of the main problems in its treatment, demonstrating the urge for the development of new antimalarial drugs. Objective: Synthesis and in vitro antiplasmodial evaluation of triazole compounds derived from isocoumarins and a 3,4- dihydroisocoumarin. Method: The compounds were synthesized in 4 to 6-step reactions with the formation of the triazole ring via the Copper(I)-catalyzed 1,3-dipolar cycloaddition between isocoumarin or 3,4-dihydroisocoumarin azides and terminal alkynes. This key reaction provided compounds with an unprecedented connection of isocoumarin or 3,4-dihydroisocoumarin and the 1,2,3-triazole ring. The products were tested for their antiplasmodial activity against a Plasmodium falciparum chloroquine resistant and sensitive strains (W2 and 3D7, respectively). Results: Thirty-one substances were efficiently obtained by the proposed routes with an overall yield of 25-53%. The active substances in the antiplasmodial test displayed IC50 values ranging from 0.68-2.89 μM and 0.85-2.07 μM against W2 and 3D7 strains, respectively.

scholarly journals Discrimination of Korean ginseng (Panax ginseng Meyer) cultivar Chunpoong and American ginseng (Panax quinquefolius) using the auxin repressed protein gene

2016 ◽  
Vol 40 (4) ◽  
pp. 395-399 ◽  
Author(s):  
Jong-Hak Kim ◽  
Min-Kyeoung Kim ◽  
Hongtao Wang ◽  
Hee-Nyeong Lee ◽  
Chi-Gyu Jin ◽  
...  
Keyword(s):  
Panax Ginseng ◽  
Protein Gene ◽  
American Ginseng ◽  
Panax Quinquefolius ◽  
Korean Ginseng

Cytotoxicity and Anti-cancer Activity of the Genus Achillea L.

2020 ◽  
Vol 27 (41) ◽  
pp. 6910-6925 ◽  
Author(s):  
Konstantina Papakosta ◽  
Maria-Eleni Grafakou ◽  
Christina Barda ◽  
Ioannis V. Kostopoulos ◽  
Ourania Tsitsilonis ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Traditional Medicine ◽  
Human Cancer ◽  
Biological Activities ◽  
Northern Greece ◽  
Human Cancer Cell Lines ◽  
Anti Cancer ◽  
Analgesic Agents ◽  
Selection Of

Background: The genus Achillea L. is rich in bioactive sesquiterpenes and flavonoids; most of the studied species exhibit several biological activities and are used as emmenagogue, wound healing and analgesic agents. Some species are also used in local folklore medicine. Objective: Following a literature survey, we discuss the anti-cancer properties of Achillea species, taking into consideration ethnopharmacological data on their use in traditional medicine for the treatment of cancer. In addition, we screened extracts and isolated secondary metabolites from A. coarctata for cytotoxicity, upon information based on local traditional medicine. The plant was collected in Kozani (Northern Greece), where it is locally used for treating gastrointestinal disorders, including stomach cancer. Methods: A selection of the relevant data was performed through a search in PubMed, Scopus, Google Scholar and Science Direct databases. In addition, extracts and isolated compounds from A. coarctata were tested for their in vitro activity against the human cancer cell lines MCF-7 and HeLa. Conclusion: The genus Achillea L. is a valuable source of bioactive secondary metabolites. The most significant outcome of the investigation of medicinal plants is the documentation and the assessment of the traditional information and its use and perspectives in the light of modern pharmacology.

scholarly journals North American(Panax quinquefolius)and Asian Ginseng(Panax ginseng)Preparations for Prevention of the Common Cold in Healthy Adults: A Systematic Review

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Jennifer Krebs Seida ◽  
Tamara Durec ◽  
Stefan Kuhle
Keyword(s):  
Panax Ginseng ◽  
North American ◽  
Common Cold ◽  
Methodological Quality ◽  
Grey Literature ◽  
American Ginseng ◽  
Healthy Adults ◽  
Panax Quinquefolius ◽  
Root Extract ◽  
Ginseng Extract

Background: Standardized ginseng extract has become the best-selling cold and flu remedy in Canada, yet much controversy regarding the efficacy of ginseng in preventing common colds remains. Objective: To assess the efficacy of ginseng preparations for the prevention of common colds in healthy adults. Methods: Comprehensive bibliographic database, trial registry and grey literature searches were conducted up to December 2007. Randomized controlled trials or controlled clinical trials comparing North American (Panax quinquefolius) or Asian ginseng (Panax ginseng) root extract to placebo or no treatment in healthy adults were included. Two reviewers independently applied the study selection criteria and assessed methodological quality. Results: Five trials involving 747 participants were included. All five trials examined North American ginseng. The methodological quality of the trials varied widely. Ginseng preparations significantly reduced the total number of common colds by 25% compared to placebo (one trial; 95% CI: 5–45). There was a tendency toward a lower incidence of having at least one common cold or other acute respiratory infection (ARI) in the ginseng group compared to the placebo group (five trials; relative risk: 0.70; 95% CI: 0.48–1.02). Compared to placebo, ginseng significantly shortened the duration of colds or ARIs by 6.2 days (two trials; 95% CI: 3.4–9.0). Conclusions: There is insufficient evidence to conclude that ginseng reduces the incidence or severity of common colds. North American ginseng appears to be effective in shortening the duration of colds or ARIs in healthy adults when taken preventatively for durations of 8–16 weeks.

scholarly journals An Overview of the Chemical Characteristics, Bioactivity and Achievements Regarding the Therapeutic Usage of Acetogenins from Annona cherimola Mill

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2926
Author(s):  
Alexandra G. Durán ◽  
M. Teresa Gutiérrez ◽  
Francisco J. R. Mejías ◽  
José M. G. Molinillo ◽  
Francisco A. Macías
Keyword(s):  
Secondary Metabolites ◽  
Traditional Medicine ◽  
Chemical Diversity ◽  
Chemical Characteristics ◽  
Annonaceous Acetogenins ◽  
Annona Cherimola ◽  
Antitumor Compounds ◽  
Custard Apple ◽  
Synthetic Derivatives ◽  
Derivatives Of

Annona cherimola Mill., or the custard apple, is one of the species belonging to the Annonaceae family, is widely used in traditional medicine, and has been reported to be a valuable source of bioactive compounds. A unique class of secondary metabolites derived from this family are Annonaceous acetogenins, lipophilic polyketides considered to be amongst the most potent antitumor compounds. This review provides an overview of the chemical diversity, isolation procedures, bioactivity, modes of application and synthetic derivatives of acetogenins from A. cherimola Mill.

Ginsenosides as host resistance factors in American ginseng (Panax quinquefolius)

2002 ◽  
Vol 80 (5) ◽  
pp. 557-562 ◽  
Author(s):  
R W Nicol ◽  
J A Traquair ◽  
M A Bernards
Keyword(s):  
Fungal Growth ◽  
Hyphal Growth ◽  
Pathogenic Fungi ◽  
Dry Weight ◽  
American Ginseng ◽  
Panax Quinquefolius ◽  
Trichoderma Spp ◽  
Growing Seasons ◽  
Alternaria Panax

American ginseng (Panax quinquefolius L.) produces a number of saponins (ginsenosides). The ability of saponins from cultivated American ginseng to inhibit fungal growth in vitro was evaluated. Fungi exhibited a range of sensitivity to ginsenosides extracted from roots collected in two growing seasons. Important root pathogens (Cylindro carpon destructans, Fusarium solani, and Fusarium oxysporum) were unaffected by these phytochemicals at a concentration of 1 mg·mL–1, whereas the growth of Alternaria panax and nonpathogenic Trichoderma spp. was inhibited. The same trend emerged when a range of ginsenoside concentrations was used on a subset of fungi. Hyphal growth of C. destructans was unaffected up to a level of ginsenosides approaching that found in roots (i.e., ~ 3% dry weight). The growth of F. solani was significantly less than that of the control at saponin concentrations of 0.1 to 3.0% (w/v), but was relatively unaffected in comparison to growth of Trichoderma hamatum and A. panax.Key words: ginsenoside, antifungal, pathogenic fungi, disease resistance, phytochemicals.

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