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Wyszukujesz frazę "prodrugs" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Isophosphoramide mustard analogues as prodrugs for anti-cancer gene-directed enzyme-prodrug therapy (GDEPT).
Autorzy:
Misiura, Konrad
Szymanowicz, Daria
Kuśnierczyk, Halina
Wietrzyk, Joanna
Opolski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1043823.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
prodrugs
GDEPT
ifosfamide
isophosphoramide mustard
antitumour treatment
Opis:
Two types of prodrugs, benzyl analogues of isophosphoramide mustard (iPAM), activated by cytochrome P450, and acylthioethyl analogues, activated by esterases, were designed. In contrast to iPAM that hydrolyse rapidly, the examined compounds are stable in phosphate-buffered saline and Tris buffer. Benzyl analogues of iPAM are poor substrates for cytochrome P450, are not cytotoxic and posses no antitumour activity. Acylthioethyl analogues of iPAM are good substrates for pig liver esterase, are cytotoxic and exert antitumour activity against L1210 leukaemia in mice. The observed correlation for iPAM analogues between their susceptibility to hydrolysis and cytotoxicity and antitumour activity suggests possible application of these compounds as the prodrugs in gene-directed enzyme-prodrug therapy.
Źródło:
Acta Biochimica Polonica; 2002, 49, 1; 169-176
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Areny jako proleki
Arenes as prodrugs
Autorzy:
Guzik, U.
Hupert-Kocurek, K.
Nieć, A.
Wojcieszyńska, D.
Powiązania:
https://bibliotekanauki.pl/articles/171928.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
prolek
związki aromatyczne
aktywacja proleku
prodrug
aromatic compounds
prodrugs activation
Opis:
Nowadays, improvement of physicochemical, biopharmaceutical and pharmacokinetic properties of pharmacologically active compounds is connected with development of prodrugs. Prodrugs are defined as pharmaceutical compounds inactive in their parent form and converted either chemically or enzymatically to the active derivative in the organism. A lot of prodrugs are aromatic compounds because of benzene ring reactivity. There are two main classes of prodrugs. In the carrier-linked prodrugs, the active drug is linked to a carrier through bioreversible covalent bond removed by enzymatic or chemical reactions. The second class comprises bioprecursor prodrugs that are modified in the body to induce the functional groups. Additionally, based on the site of prodrugs conversion into their active forms, they are classified into two groups: prodrugs metabolized intracellulary and prodrugs metabolized extracellulary. Chemical or enzymatic transformation of prodrugs may occur through their reduction, decarboxylation, oxidative deamination, cyclization, phosphorylation and/or hydrolysis. These reactions enable to overcome different barriers in drug delivery through changes in aqueous solubility, chemical instability and insufficient oral adsorption. It may also cause prolonged duration of drug action. Moreover, the prodrugs strategy allows achieving brain and tumor specific targeting. Summarizing, the designing of the prodrugs seems to be one of the most promising strategies to enhance the therapeutic effect of drugs and reduction of their negative side effects.
Źródło:
Wiadomości Chemiczne; 2015, 69, 3-4; 255-269
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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