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Wyświetlanie 1-2 z 2
Tytuł:
Matrix metalloproteinases in serum of Emery-Dreifuss muscular dystrophy patients
Autorzy:
Niebroj-Dobosz, Irena
Madej-Pilarczyk, Agnieszka
Marchel, Michał
Sokołowska, Beata
Hausmanowa-Petrusewicz, Irena
Powiązania:
https://bibliotekanauki.pl/articles/1040496.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Emery-Dreifuss muscular dystrophy
dilated cardiomyopathy
matrix metalloproteinases
Opis:
In the pathogenesis of dilated cardiomyopathy (DCM) in Emery-Dreifuss muscular dystrophy (EDMD) matrix metalloproteinases (MMPs) are supposed to be involved and may have diagnostic/prognostic value. Serum levels of MT1-MMP, MMP-2 and MMP-9 were quantified by ELISA and zymography in 22 EDMD patients and 15 age-matched controls. In the autosomal-dominant EDMD MMP-2 and MT1-MMP were increased in all cases, and MMP-9 was increased in two of the eight examined patients. In the X-linked EDMD MMP-2 expression was increased in all the cases, MMP-9 level was elevated in 3 of the 14 cases, and MT1-MMP was decreased in eight of these patients. There was no evident correlation between the MMPs level and the different cardiac parameters including left-ventricular end-diastolic diameter, left atrial diameter and left ventricular ejection fraction in either form of EDMD. The presented results indicate that a changed level of matrix metalloproteinases, especially that of MMP-2 in serum, may be of value for detection of cardiac involvement in EDMD patients, especially in those patients with no evident subjective cardiac symptoms. Further follow-up studies of MMPs are needed to check if their determination is of value for monitoring of the progression of atrial/ventricular dilatation. MMPs determinations may also be useful for monitoring DCM treatment by synthetic MMPs inhibitors.
Źródło:
Acta Biochimica Polonica; 2009, 56, 4; 717-722
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Arbutin production via biotransformation of hydroquinone in in vitro cultures of Aronia melanocarpa (Michx.) Elliott
Autorzy:
Kwiecień, Inga
Szopa, Agnieszka
Madej, Kornelia
Ekiert, Halina
Powiązania:
https://bibliotekanauki.pl/articles/1039510.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
arbutin
black chokeberry
biotransformation
hydroquinone
in vitro cultures
Opis:
Arbutin (hydroquinone β-D-glucoside) is a compound of plant origin possessing valuable therapeutic (urinary tract disinfection) and cosmetic (skin whitening) properties, which can be obtained from in vitro cultures of plants belonging to different taxa via biotransformation of exogenously supplemented hydroquinone. Agitating cultures of Aronia melanocarpa were maintained on the Murashige and Skoog medium containing growth regulators: the cytokinin - BAP (6-benzylaminopurine), 2 mg/l and the auxin NAA (α-naphthaleneacetic acid), 2 mg/l. The biomass was cultured for 2 weeks and then hydroquinone was supplemented at the following doses: 96, 144, 192, 288 and 384 mg/l either undivided or divided into two or three portions added at 24-hour intervals. The content of the reaction product - arbutin, was determined using an HPLC method in methanolic extracts from biomass and lyophilized medium samples collected 24 hours after the addition of the last precursor dose. The total amounts of arbutin were very diverse, from 2.71 to 8.27 g/100g d.w. The production of arbutin rose with increasing hydroquinone concentration. The maximum content of the product was observed after hydroquinone addition at 384 mg/l divided into two portions. Biotransformation efficiency also varied widely, ranging from 37.04% do 73.80%. The identity of the product - arbutin, after its isolation and purification was confirmed by spectral analysis (1H-NMR spectrum). The maximum amount of arbutin obtained was higher than that required by the latest 9th Edition of the Polish Pharmacopoeia and by the newest 8th Edithion of European Pharmacopoeia for Uvae ursi folium (7.0 g/100g d.w.), and is interesting from practical point of view.
Źródło:
Acta Biochimica Polonica; 2013, 60, 4; 865-870
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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