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Wyszukujesz frazę "Cielecka, Anna" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Impact of hydrochlorothiazide on the stability of two perindopril salts. Evaluation of the interaction with HPLC and ESI LC/MS methods
Autorzy:
Juszczak, Anna
Stanisz, Beata J.
Szczołko, Wojciech
Pieszak, Martyna
Cielecka-Piontek, Judyta
Powiązania:
https://bibliotekanauki.pl/articles/895593.pdf
Data publikacji:
2018-10-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
perindopril tert-butyloamine
perindopril arginine
hydrochlorothiazide
drug stability
interaction
Opis:
Perindopril (PER) belongs to the group of the angiotensin converting enzyme inhibitors and is widely prescribed antihypertensive drug. It can be used in monotherapy or in combination therapy for example with hydrochlorothiazide (HTH). As on the market there is no pharmaceutical formulation containing both drugs and in literature has not been reported any work about effect of HTH on PER degradation process, the primary objective of this study was the assessment of stability of two salts of perindopril - tert-butylamine (PERt) and arginine (PERa) in a mixtures model with HTH in different relative humidities and constant temperature. Objective of the study was establishing the mechanisms of drug decomposition in the presence of HTH. Results were achieved using the high performance liquid chromatography (RP-HPLC). The degradation rate constants for mixtures and pure substances were calculated. Decomposition products have been analyzed by ESI LC/MS and the decomposition mechanism for each salt has been proposed. The degradation of PERt in the presence of HTH took place according to autocatalytic reaction kinetic mechanism, described mathematically by Prout-Tompkins equation, and the decomposition process leads to hydrolysis. HTH in the model mixture with PERa generates a first-order kinetic model of the decomposition reaction, and there are two main products of decomposition: product of hydrolysis and diketopiperazine. Our study showed that HTH has statistically significant positive impact on both salts. It can be suggested that PERt or PERa and HTH can be formulated together, hence there is no negative interaction between the drugs.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 5; 1117-1125
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
THE POSSIBILITY OF USING X-RAY POWDER DIFFRACTION, INFRARED AND RAMAN SPECTROSCOPY IN THE STUDY OF THE IDENTIFICATION OF STRUCTURAL POLYMORPHS OF ACETAMINOPHEN
Autorzy:
Stasiłowicz, Anna
Mizera, Mikołaj
Tykarska, Ewa
Lewandowska, Kornelia
Miklaszewski, Andrzej
Cielecka-Piontek, Judyta
Powiązania:
https://bibliotekanauki.pl/articles/895486.pdf
Data publikacji:
2019-12-29
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
acetaminophen
PXRD
Raman
FT-IR
structural polymorphism
Opis:
Paracetamol (acetaminophen), a pain-killer with antipyretic properties, shows structural polymorphism. It occurs in three polymorphic forms: monoclinic, orthorhombic, and unstable form III. In the study, the commercially available samples of paracetamol (P1 and P2) were examined using X-ray powder diffraction, infrared, and Raman spectroscopy. Results demonstrated that all of the methods defined polymorphic forms of paracetamol in the samples. However, only Raman spectroscopy and PXRD methods detected impurities in the sample P1. These methods transpired to be more sensitive than the FT-IR method, which identified samples of paracetamol as one structural form (monoclinic polymorph). Moreover, the Raman spectroscopy identified impurities in the form P1 as changes in the crystalline form.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 6; 997-1004
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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