22 research outputs found

    Mutagenic activity of quercetin in derivatives of Escherichia coli WP2 uvrA with increased permeability

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    Diagnoses plantarum novarum in Anatolia septentrionali anno 1925 lectarum

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    The effect of flavonoids on the mutagenic activity of aromatic amines

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    A study of the genotoxic potential of flavonoids using short-term bacterial assays

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    Characteristics of dietary supplements containing in its composition glutathione (GSH) available in Poland

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    Glutathione (GSH) is a endogenous , low molecular weight thiol compound. It has a wide spectrum of biological activity in the body. It is an important element of the antioxidant system that protects cells against the effects of oxidative stress. As an antioxidant, GSH inactivates free radicals and reactive forms of oxygen and nitrogen in enzymatic and non-enzymatic reactions, regenerates other antioxidants, e.g. vitamins C and E, maintains - SH groups in proteins in a reduced state, participates in the detoxification of xenobiotics. The decrease in GSH concentration occurs in many diseases and in the aging process. Increasing the level of GSH in the body's cells is possible by consuming dietary components containing GSH or amino acids (especially cysteine) for its endogenous synthesis and supplementation with GSH pharmaceutical preparations. The aim of the study was to characterize dietary supplements available in Poland containing glutathione (GSH). The analysis covered 39 supplements from GSH, which were available in Poland. Their characteristics include: place / country of production; type of preparations (single and multi-component); bioavailability of GSH contained therein - preparations in the liposome formula (lipophilic GSH) and in the non-liposome formula (non-lipophilic GSH); pharmaceutical form in which these preparations were available on the commercial offer and GSH content in supplements. Among 39 GSH supplements, there were 24 single-component and 15 multi-component preparations. The largest number of GSH supplements available in Poland came from the USA and Great Britain. Among GSH supplements, there were 15 liposome (lipophilic) formula preparations, of which 12 were lipophilic one-component and 3 multi-component and 24 non-liposome (non-lipophilic) formula preparations - 12 single and 12 multi-component. Capsules, gel, liquid and tablets were the most common pharmaceutical form among all analyzed GSH supplements. The rarest pharmaceutical form was lozenges, aerosol, powder and ampoule. Analysis of GSH supplements available in Poland showed that in one single dose of the preparation was from 18 mg to 750 mg GSH. The most common dose was 250, 450 and 500 mg GSH in a single dose. One-component supplements most often contained 450 mg, then 250 and 500 mg GSH, while multi-component supplements - 250 mg GSH.Glutation (GSH) jest niskocz膮steczkowym zwi膮zkiem tiolowym, kt贸ry wykazuje szerokie spektrum biologicznej aktywno艣ci. Jest wa偶nym elementem systemu antyoksydacyjnego chroni膮cego kom贸rki przed skutkami stresu oksydacyjnego. Jako antyoksydant GSH unieczynnia wolne rodniki i reaktywne formy tlenu i azotu, regeneruje inne antyoksydanty np. witamin臋 C i E, utrzymuje grupy 鈥揝H w bia艂kach w stanie zredukowanym, bierze udzia艂 w detoksykacji ksenobiotyk贸w. Obni偶enie st臋偶enia GSH wyst臋puje w wielu schorzeniach. Zwi臋kszenie poziomu GSH w kom贸rkach organizmu jest mo偶liwe poprzez spo偶ywanie sk艂adnik贸w diety zawieraj膮cych GSH, czy aminokwasy (szczeg贸lnie cysteina) do jego endogennej syntezy oraz suplementacj臋 preparatami farmaceutycznymi z GSH. Celem pracy by艂a charakterystyka dost臋pnych w Polsce suplement贸w diety zawieraj膮cych w swoim sk艂adzie glutation (GSH). Analiz膮 obj臋to 39 suplement贸w z GSH. Ich charakterystyka uwzgl臋dnia: miejsce/kraj ich produkcji; typ preparat贸w (jedno- i wielosk艂adnikowe); biodost臋pno艣膰 zawartego w nich GSH - preparaty w formule liposomowej (lipofilny GSH) i w formule nieliposomowej (nielipofilny GSH); posta膰 farmaceutyczn膮 preparat贸w oraz zawarto艣膰 GSH w suplementach. W艣r贸d 39 suplement贸w z GSH by艂o 24 preparaty jedno- i 15 wielosk艂adnikowych. Najwi臋ksza liczba suplement贸w z GSH pochodzi艂a z USA i Wielkiej Brytanii. W艣r贸d suplement贸w z GSH by艂o: 15 preparat贸w formu艂y liposomowej (lipofilnej ), z czego lipofilnych jednosk艂adnikowych by艂o 12, a wielosk艂adnikowych 3 oraz 24 preparaty formu艂y nieliposomowej (nielipofilnej) - 12 jedno- i 12 wielosk艂adnikowych. Najcz臋艣ciej wyst臋puj膮c膮 postaci膮 farmaceutyczn膮 w艣r贸d wszystkich analizowanych suplement贸w z GSH by艂y kapsu艂ki, 偶el, p艂yn i tabletki. W pojedynczej dawce preparatu znajdowa艂o si臋 od 18 mg do 750 mg GSH. Najcz臋艣ciej znajdowa艂o si臋 250, 450 i 500 mg GSH . Suplementy jednosk艂adnikowe najcz臋艣ciej zawiera艂y 450 mg GSH, natomiast wielosk艂adnikowe 250 mg GSH

    Induction of aberrant crypts in the colons of rats by alkylating agents

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