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Wyświetlanie 1-10 z 148
Tytuł:
Prognostic efficiency of inflammatory complications development of dental implantation based on indicators of lipid peroxidation (LPO) of oral fluid
Autorzy:
Pohodenko-Chudakova, I. O.
Karsyuk, Y. V.
Tematy:
dental implants
complications
lipid peroxidation
Pokaż więcej
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Powiązania:
https://bibliotekanauki.pl/articles/284842.pdf  Link otwiera się w nowym oknie
Opis:
The frequency of complications of dental implantation at the present stage varies from 6% to 23%, what determined the relevance of this examination. The aim of this work is to determine the predictive effectiveness of the development of inflammatory complications of dental implantation on the basis of indicators of lipid peroxidation (POL) of the oral fluid (level of malondialdehyde (MDA) and the activity level of superoxide dismutase (SOD)). We examined 49 patients 25-59 years old which had no traumas, operations and diseases requiring medical rehabilitation, inflammatory disease in the maxillofacial area and the gastrointestinal tract, as well as other factors that can affect qualitative and quantitative content of the oral fluid. These patients underwent delayed dental implantation (one implant in one segment of the jaw). The POL indices were determined twice: before operation of dental implantation and 3 days after operation. The effectiveness of the proposed method was determined in accordance to the clinical and economic studies requirements. Prognostic efficiency in accordance with the procedure of conducting clinical and economic examinations on the basis of MDA level was 78%, and based on the level of SOD activity – 76%, which classifies it as high and allow to reduce the number of complications and diagnostic mistakes including in the planning and execution of invasive procedures associated with the installation of dental implants.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Species- and substrate-specific stimulation of human plasma paraoxonase 1 (PON1) activity by high chloride concentration.
Autorzy:
Bełtowski, Jerzy
Wójcicka, Grażyna
Marciniak, Andrzej
Tematy:
paraoxonase
arylesterase
lipid peroxidation
oxidative stress
Pokaż więcej
Wydawca:
Polskie Towarzystwo Biochemiczne
Powiązania:
https://bibliotekanauki.pl/articles/1043697.pdf  Link otwiera się w nowym oknie
Opis:
Paraoxonase 1 (PON1), contained in plasma high-density lipoproteins, plays an important role in the protection of plasma lipoproteins and cell membranes from oxidative damage. Previous studies indicate that human PON1 is stimulated by high NaCl concentrations. The aim of this study was to characterize in more detail the effect of salts on serum PON1. Paraoxon-hydrolyzing activity of human serum was stimulated by 81.6% following the addition of 1 M NaCl. The effect of NaCl was dose-dependent between 0.5 and 2 M. PON1 activity toward phenyl acetate was reduced by 1 M NaCl by 55.2%. Both the paraoxon- and phenyl acetate-hydrolysing activity was slightly lower in heparinized plasma than in serum, but NaCl had similar stimulatory and inhibitory effects on these activities, respectively. In rat, rabbit, and mouse, NaCl reduced PON1 activity. KCl had a similar effect on human PON1 as NaCl. Sodium nitrite also stimulated human PON1 but much less effectively than chloride salts. In contrast, sucrose, sodium acetate and sodium lactate had no significant effect. NaBr was a less effective PON1 activator than NaCl, whereas the effect of NaJ was non-significant. The activity of human PON1 toward homogentisic acid lactone and γ-decanolactone was unaltered by NaCl. These data indicate that: 1) high concentrations of chlorides stimulate human PON1 activity toward paraoxon but not other substrates, 2) PON1 is inhibited by Cl- in other mammalian species, 3) the potency of human PON1 activation by halogene salts increases with decreasing atomic mass of the halide anion.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tough sprouting - impact of cadmium on physiological state and germination rate of soybean seeds
Autorzy:
Chmielowska-Bak, J.
Holubek, R.
Frontasyeva, M.
Zinicovscala, I.
Isidogru, S.
Deckert, J.
Tematy:
metal stress
antioxidants
cell viability
lipid peroxidation
Pokaż więcej
Wydawca:
Polskie Towarzystwo Botaniczne
Powiązania:
https://bibliotekanauki.pl/articles/2130694.pdf  Link otwiera się w nowym oknie
Opis:
Seed germination is the earliest process in plant development and is crucial for further plant growth and fitness. The process is regulated by various internal and external factors, including soil pollutants such as nonessential metals. In the present study, we examined in detail the impact of short-term imbibition in Cd solutions at several concentrations (5, 10, and 25 mg/L) on germination rate and physiological state of soybean seeds. The results showed that although Cd was readily absorbed by the seeds, the metal had no effect on seeds cell viability, oxidative stress intensity, or germination percentage. In contrast, imbibition in Cd solution led to slight reduction in antioxidant capacity of seeds. Seedlings grown from seeds pretreated with metal showed no differences in growth in relation to the control. Taken together, the results indicate that soybean seeds are relatively tolerant even to high Cd concentration (up to 25 mg/L).
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectral fingerprinting revealed modulation of plant secondary metabolites in providing abiotic stress tolerance to invasive alien plants Lantana camara (L.), Parthenium hysterophorous (L.), Ricinus communis (L.), and Ageratum conyzoides (L.) (plant metabolites in stress tolerance to invasive plants)
Autorzy:
Sharma, A.D.
Kaur, J.
Chand, T.S.P.
Tematy:
chemical fingerprinting
invasiveness
lipid peroxidation
secondary metabolites
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/2096781.pdf  Link otwiera się w nowym oknie
Opis:
Invasive alien species are non-native plant species that displace native species and pose adverse effects to environment, ecosystem, economy, and human health by diminishing the growth of native plants and by exhibiting higher stress tolerance. In our present study, four invasive alien species, namely Lantana camara, Parthenium hysterophorous, Ricinus communis, and Ageratum conyzoides, were studied from different locations. Plants growing under natural environmental conditions were sampled at random in the vicinity of Jalandhar. To gain insights into the biochemical basis of invasiveness of these plants, the samples were subjected to chemical fingerprinting by using UV-Vis, fluorescent, and Fourier transform-infrared (FT-IR) techniques under natural abiotic stress conditions (moderate and hot conditions). Indices of oxidative stress, such as malondialdehyde (MDA), were also studied. MDA levels were enhanced under hot conditions. Elevated peaks (major and minor) were observed in UV fingerprinting during adverse abiotic conditions. Fluorescent spectroscopy also validated the enhanced levels of secondary metabolites. FT-IR spectroscopy confirmed the presence of alkaloids and phenolics during stress conditions. Peaks were identified as rutin, vanillic acid, ascorbic acid, and glutathione reduced. The obtained results showed that under stressful conditions, the studied plants may produce an increased level of metabolites that might play a role in minimizing the oxidative stress faced by these plants. It was concluded that the studied plants, namely P. hysterophorus, L. camara, R. communis, and A. conyzoides, have the potential to cope with abiotic stress such as high temperature, which could be the reason for their invasiveness and vast adaptability.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of chromone based hydrazones on lipid peroxidation and bFGF concentration in the HL-60 cell line
Autorzy:
Łazarenkow, Andrzej
Michalska, Marta
Gorąca, Anna
Mirowski, Marek
Nawrot-Modranka, Jolanta
Piechota-Polanczyk, Aleksandra
Tematy:
hydrazone
chromone
phosphorohydrazone
HL-60
lipid peroxidation
bFGF
Pokaż więcej
Wydawca:
Polskie Towarzystwo Biochemiczne
Powiązania:
https://bibliotekanauki.pl/articles/1039590.pdf  Link otwiera się w nowym oknie
Opis:
Natural and synthetic derivatives of benzo-γ-pyrones (i.e. flavones, chromones, and coumarins) and their synthetic analogues possess a wide range of biological properties in vitro and in vivo. In this paper we investigated the influence of two hydrazone compounds of chromones, 3-{[(2-dimethoxytiophosphoryl)-2-methylhydrazono]-methyl}-chromen-4-one (CH-3) and 2-amino-6-chloro-3-[(2-hydroxyethyl)-hydrazonomethyl]-chromen-4-one (A-12), on lipid peroxidation and bFGF concentration in the HL-60 cells. Both of the studied compounds had a significant influence on bFGF and TBARS in ranges -137.20 ~ 380.26% and -81.66 ~ -28.68%, respectively, in comparison with the control (counted as 0 %).
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of electromagnetic field (1800 MHz) on lipid peroxidation in brain, blood, liver and kidney in rats
Autorzy:
Bodera, Paweł
Stankiewicz, Wanda
Antkowiak, Bożena
Paluch, Małgorzata
Kieliszek, Jarosław
Sobiech, Jaromir
Niemcewicz, Marcin
Tematy:
electromagnetic field
lipid peroxidation
malondialdehyde
rats
analgesics
tramadol
Pokaż więcej
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Powiązania:
https://bibliotekanauki.pl/articles/2177234.pdf  Link otwiera się w nowym oknie
Opis:
Objectives The aim of this study is the evaluation of the influence of repeated (5 times for 15 min) exposure to electromagnetic field (EMF) of 1800 MHz frequency on tissue lipid peroxidation (LPO) both in normal and inflammatory state, combined with analgesic treatment. Material and Methods The concentration of malondialdehyde (MDA) as the end-product of the lipid peroxidation (LPO) was estimated in blood, liver, kidneys, and brain of Wistar rats, both healthy and those with complete Freund’s adjuvant (CFA)-induced persistent paw inflammation. Results The slightly elevated levels of the MDA in blood, kidney, and brain were observed among healthy rats in electromagnetic field (EMF)-exposed groups, treated with tramadol (TRAM/EMF and exposed to the EMF). The malondialdehyde remained at the same level in the liver in all investigated groups: the control group (CON), the exposed group (EMF), treated with tramadol (TRAM) as well as exposed to and treated with tramadol (TRAM/EMF). In the group of animals treated with the complete Freund’s adjuvant (CFA) we also observed slightly increased values of the MDA in the case of the control group (CON) and the exposed groups (EMF and TRAM/EMF). The MDA values concerning kidneys remained at the same levels in the control, exposed, and not-exposed group treated with tramadol. Results for healthy rats and animals with inflammation did not differ significantly. Conclusions The electromagnetic field exposure (EMF), applied in the repeated manner together with opioid drug tramadol (TRAM), slightly enhanced lipid peroxidation level in brain, blood, and kidneys.
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 148

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