Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Baczek, Tomasz" wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Is there any variability in the level of cortisol, corticosterone and cortisone of healthy volunteers versus women and men with elevated cholesterol?
Autorzy:
Konieczna, Lucyna
Puch-Walczak, Aleksandra
Zdrojewski, Tomasz
Bączek, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1891288.pdf
Data publikacji:
2021-12-02
Wydawca:
Gdański Uniwersytet Medyczny
Tematy:
Cardiovascular diseases
Elevated cholesterol
Steroids
Women and men
Opis:
Background: Cardiovascular diseases with the accompanied elevated level of total cholesterol have been a major problem in society for the last several decades. They belong to the diseases of civilization which affect people at an increasingly young age. For this reason, our aim was to investigate whether the concentrations of selected steroids are related to elevated total cholesterol in people without diagnosed cardiovascular diseases. Material and methods: The study involved 71 plasma samples. 19 of them were obtained from women and men with elevated cholesterol levels, whereas 52 samples were from healthy volunteers (control group). Liquid chromatography coupled with mass spectrometry (LC-MS) validated method followed by solid-phase extraction procedure were applied to measure the plasma concentrations of the three endogenous glucocorticosteroids (cortisol, corticosterone and cortisone). Results: Statistically significant differences between the concentration of cortisol were noted among healthy women and women with elevated cholesterol. The measured concentrations of cortisol in healthy women and men are comparable, 111.19 ng/mL and 112.22 ng/mL. respectively. However, the concentrations of cortisol in the elevated cholesterol group was significantly lower among women with elevated cholesterol than in healthy women (74.13 ng/mL and 111.19 ng/mL respectively). The concentration of cortisol for men with elevated cholesterol was 38.60 ng/mL. Hence, it is much higher than in women with elevated cholesterol and higher than in the case of healthy men. Distinctive changes can be observed also for corticosterone measured for both women and men. Conclusions: The observed differences on the level of steroids between healthy control group and patients with elevated cholesterol can be considered as worthy of further investigation from both biochemical as well as clinical points of view.
Źródło:
European Journal of Translational and Clinical Medicine; 2021, 4, 2; 68-74
2657-3148
2657-3156
Pojawia się w:
European Journal of Translational and Clinical Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In Vitro approach for identification of a leading cytochrome P450 isoenzyme responsible for biotransformation of novel arylpiperazine drug candidates and their inhibition potency towards CYP3A4.
Autorzy:
Ulenberg, Szymon
Belka, Mariusz
Georgiev, Paweł
Król, Marek
Herold, Franciszek
Bączek, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/895671.pdf
Data publikacji:
2020-02-29
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
cytochrome P-450
drug-drug interactions
isoform
arylpiperazine
CYP 3A4 inhibitor
metabolic stability
Opis:
Presented article is a follow-up study of previous work, published in PLoS ONE in 2015 regarding metabolic stability of arylpiperazine derivatives, a very promising group of novel antidepressants. The aim of this study was to identify cytochrome P450 (CYP) isoforms that participate in the metabolism of some novel arylpiperazine derivatives developed by authors as well as their potency to inhibit reactions catalysed by identified lead metabolizing enzyme. Such studies allow to predict possible drug-drug interactions that might occur during co-administration of studied compounds with other drugs that are metabolized by identified enzyme. The compounds were incubated in vitro together with the isolated CYP isoforms. After the incubation, samples were analyzed by liquid chromatography coupled with mass spectrometry. The results showed main contribution of CYP3A4 isoform in biotransformation of the investigated derivatives. With CYP3A4 being the main CYP isoform responsible for the metabolism of arylpiperazine derivatives and at the same time being the main metabolizing enzyme for almost 50% of all drugs, a high chance of in vivo drug-drug interactions emerged. Therefore, IC50 values were also determined using testosterone hydroxylation as a probe reaction, specific for CYP3A4. The resulting values ranged from 6.13 to 15.85 µM, which places studied derivatives as moderate or weak inhibitors of CYP3A4. Those results, combined with conclusion that all of the arylpiperazine derivatives are also metabolized to some extent by other CYP isoforms (providing alternative metabolic pathways), result in conclusion that studied arylpiperazines might be safe for co-administration with other CYP3A4 substrates.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 1; 69-76
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A policy view: gaps and weaknesses of substitution between biological products in law and economics dimension: the example of insulin
Autorzy:
Gruchała, Katarzyna A.
Waz, Piotr
Kawczak, Piotr
Zimmermann, Agnieszka
Wolnik, Bogumił
Baczek, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/895366.pdf
Data publikacji:
2018-08-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
insulin
biosimilars
substitution
drug policy
legilation
Opis:
The purpose of the study is to analyze the act of substitution between biological products. Diabetes mellitus notes the greatest increase in the projected causes of deaths globally till 2030. The proper drug substitution process may help to increase the control over the disease management. In this paper authors try to identify and explain the challenges for the health policies and legislations in emerging markets and low- and middle-income countries. Analysis of retrospective data covering prescribed-dispensed insulin products was performed. The study is based on the law and economics approach with the application of the planning theory and modeling. The study shows the scope of substitution process of insulin and highlights the necessity of univocal legal approach profiled for this therapy area. Prognosis of created base model indicates at constant presence of substitution process of insulin. Substitution is to bring financial savings for patients, it is yet however unknown whether savings arising from the act of purchase will still have positive impact on undertaken therapy process in long-term period. These findings may inform about important factors and how emerging markets and low- and middle-income countries can increase progress of the substitution process.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 4; 1003-1015
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies