Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Gerard, Nowak"'
Autor:
Ewa Florek, Marta Szukalska, Katarzyna Markiewicz, Izabela Miechowicz, Justyna Gornowicz-Porowska, Anna Jelińska, Joanna Kasprzyk-Pochopień, Joanna Nawrot, Agnieszka Sobczak, Małgorzata Horoszkiewicz, Wojciech Piekoszewski, Gerard Nowak
Publikováno v:
Antioxidants, Vol 12, Iss 10, p 1846 (2023)
Hepatocellular damage by the harmful effects of xenobiotics, which increase the production of free radicals, is a widespread phenomenon. The extract from the leaves of Cynara scolymus L. available as an artichoke preparation (natural source) of antio
Externí odkaz:
https://doaj.org/article/bb018b42167b40128a5a2c855fb7b7e3
Publikováno v:
Applied Sciences, Vol 13, Iss 11, p 6477 (2023)
This paper presents raw plant materials and their characteristic compounds which may affect the immune system. Plant-derived agents in specific doses affect the body’s non-specific, antigen-independent defense system. They have immunostimulatory ef
Externí odkaz:
https://doaj.org/article/733acf54aa6b4ba395f67f0bfd559f12
Autor:
Joanna Nawrot, Justyna Gornowicz-Porowska, Jaromir Budzianowski, Gerard Nowak, Grzegorz Schroeder, Joanna Kurczewska
Publikováno v:
Cells, Vol 11, Iss 12, p 1897 (2022)
COVID-19 infection causes complications, even in people who have had a mild course of the disease. The most dangerous seem to be neurological ailments: anxiety, depression, mixed anxiety–depressive (MAD) syndromes, and irreversible dementia. These
Externí odkaz:
https://doaj.org/article/0a0f0bd3b02e44089ed97bd78012e976
Publikováno v:
Data in Brief, Vol 25, Iss , Pp - (2019)
In this article we present the correlations observed in the NOESY spectra, which provide direct and unequivocal detection of hydroxyl groups occurring in the chemical structures of three sesquiterpene lactones - a germacranolide (8α-(E)-4′-hydroxy
Externí odkaz:
https://doaj.org/article/f633be47911b4707873aebe57fb84336
Autor:
Joanna Nawrot, Zygmunt Adamski, Beata Kamińska-Kolat, Honorata Kubisiak-Rzepczyk, Anna Kroma, Gerard Nowak, Justyna Gornowicz-Porowska
Publikováno v:
Plants, Vol 10, Iss 6, p 1180 (2021)
Due to increasing resistance of pathogenic fungi to antifungal treatments, new types of drugs are needed. For this purpose, active substances with antifungal properties occurring in natural compounds should be considered. The herb Psephellus bellus s
Externí odkaz:
https://doaj.org/article/c51e46f46c0747d49f731b7ab725aa64
Publikováno v:
Molecules, Vol 25, Iss 22, p 5329 (2020)
Sesquiterpene lactones, coumarins, phytoecdysones and phenolic compounds are characteristic of the species from the subtribe Centaureinae (Asteraceae). Many of the compounds isolated from plants of the Centaureinae subtribe have strong pharmacologica
Externí odkaz:
https://doaj.org/article/b890974047bd45c0836c607317587437
Autor:
Joanna Nawrot, Marta Napierała, Kinga Kaczerowska-Pietrzak, Ewa Florek, Justyna Gornowicz-Porowska, Ewa Pelant, Gerard Nowak
Publikováno v:
Molecules, Vol 24, Iss 22, p 4131 (2019)
The presence of dominant active compounds in standardised methanol extract from the leaves of Stizolophus balsamita (S. balsamita) was examined using HPLC with a diode-array detector. The extract and three dominant parthenolide derivatives were teste
Externí odkaz:
https://doaj.org/article/2c0b78c392104d8da09b685c45d83ce1
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 55, Iss 2, Pp 227-231 (2014)
Nine new guaianolides. I of which are chlorinated, were isolated from the dried, above-ground parts of Centaurea bella Trautv. They are: cebellin A. B, C, D, E. F, G, H and 1. l he known guaianolides centaurepensin and repdiolide were also found. The
Externí odkaz:
https://doaj.org/article/bfd5b890a859480c9b30167de0a36926
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 55, Iss 1, Pp 17-22 (2014)
The presence of cynaropicrin was determined in 13 species of the subtribe Centaureinae Dumort.: Centaurea declinata M. B.- C. leucophylla M. B.. C. dealbata Willd.. C. zangezuri (Sosn.) Sosn., C. carthalinica (Sosn.) Sosn., C. thracica (Janka) Hayek,
Externí odkaz:
https://doaj.org/article/f561ab536be24114b0e347f8a3aa7023
Autor:
Gerard Nowak
Publikováno v:
Acta Societatis Botanicorum Poloniae, Vol 62, Iss 1-2, Pp 33-36 (2014)
24 guaianolides and I germacranolide have been found so far in Centaurea bella Trautv. 15-deoxyrepin is another guaianolide, obtained in a similar way as previous compounds - by column chromatography, and identified by means of spectral analysis (1H
Externí odkaz:
https://doaj.org/article/be735810d4b44f668fd150f3f7197f9c