Cadmium (Cd) is a heavy metal that occurs in all areas of the environment, including the food chain. In the body, it causes oxidative stress by producing free radicals that are harmful to the cells. Grape seed extract (GSE) contains a wide range of biologically active components that help to neutralize the adverse effects of free radicals. In this study, the effects of GSE prepared form semi-resistant grapevine cultivar Cerason, which is rich in phenolics, on biochemical markers of brown rats exposed to the effects of cadmium were monitored. GSE increased the plasma antioxidant activity and, in the kidneys and the liver, Cd content was significantly lowered by GSE co-administration. Accordingly, the increase in creatinine content and alanine aminotransferase activity and the decrease of catalase and superoxide dismutase activities caused by cadmium were slowed down by GSE co-administration. The results of this work reveal that grape seed extract offers a protective effect against the intake of heavy metals into the organism.
- Klíčová slova
- antioxidants, biochemical markers, cadmium, grape seed extract, protective effect, rattus norvegicus,
- MeSH
- alanintransaminasa krev MeSH
- antioxidancia analýza MeSH
- aspartátaminotransferasy krev MeSH
- biologické markery metabolismus MeSH
- extrakt ze semen vinné révy farmakologie MeSH
- fytonutrienty analýza MeSH
- játra účinky léků enzymologie metabolismus MeSH
- kadmium krev MeSH
- katalasa metabolismus MeSH
- kreatinin krev MeSH
- krysa rodu Rattus MeSH
- ledviny účinky léků metabolismus MeSH
- metalothionein metabolismus MeSH
- močovina krev MeSH
- potkani Wistar MeSH
- semena rostlinná chemie MeSH
- superoxiddismutasa metabolismus MeSH
- zdraví * MeSH
- zvířata MeSH
- Check Tag
- krysa rodu Rattus MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- alanintransaminasa MeSH
- antioxidancia MeSH
- aspartátaminotransferasy MeSH
- biologické markery MeSH
- extrakt ze semen vinné révy MeSH
- fytonutrienty MeSH
- kadmium MeSH
- katalasa MeSH
- kreatinin MeSH
- metalothionein MeSH
- močovina MeSH
- superoxiddismutasa MeSH
This review is focused on the study of the effects of grape seed and skin extract (GSSE) on human health. GSSE contains high concentrations of important polyphenolic substances with high biological activity. This review is a summary of studies that investigate the effects of GSSE on diabetes mellitus, cardiovascular disease and cancer, its neuroprotective effect, and its effects on the gastrointestinal tract and other health complications related to these diseases. The results of the studies confirm that the anti-inflammatory, antiapoptotic, and pro-proliferative effects of "Vitis vinifera L." seed extract reduce the level of oxidative stress and improve the overall lipid metabolism.
- Klíčová slova
- antioxidants, cancer, cardiovascular disease, diabetes mellitus, gastrointestinal tract, grape seeds, grape skin, neuroprotective effect,
- MeSH
- biologické markery metabolismus MeSH
- extrakt ze semen vinné révy farmakologie MeSH
- lidé MeSH
- lipidy krev MeSH
- nemoc MeSH
- neuroprotektivní látky farmakologie MeSH
- zdraví * MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
- Názvy látek
- biologické markery MeSH
- extrakt ze semen vinné révy MeSH
- lipidy MeSH
- neuroprotektivní látky MeSH
The paper deals with the study of antioxidant properties of extracts from vine seeds (Vitis vinifera L.) using spectrometric and chromatographic techniques. Ten vine varieties (Cerason, Laurot, Kofranka, Gewürztraminer, Hibernal, Blaufrankisch, Zweigeltrebe, Erilon, Palava, and Welschriesling) obtained from the years 2015, 2016, and 2017 were selected for the study. The antioxidant activity was determined spectrophotometrically using four fundamentally different methods; the content of total polyphenolic compounds was determined using the Folin-Ciocalteu method. In 2015, the content of 14 antioxidants (gallic acid, caffeic acid, coumaric acid, coutaric acid, ferulic acid, fertaric acid, trans-piceid, trans-piceatannol, rutin, quercetin-3-β-d-glucoside, quercitrin, myricetin, catechin, and epicatechin) were studied. The results of the study show the high content of antioxidant components in grape seeds and the differences in content in individual varieties and in individual years.
- Klíčová slova
- HPLC/UV-VIS, antioxidant activity, grape seeds, polyphenolic compounds,
- MeSH
- antioxidancia analýza MeSH
- ovoce chemie MeSH
- rostlinné extrakty analýza MeSH
- semena rostlinná chemie MeSH
- Vitis chemie MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- antioxidancia MeSH
- rostlinné extrakty MeSH
Knowledge of population exposure to phthalates based on the urinary metabolite levels is of the highest importance for health risk assessment. Such data are scarce in the Czech population. In the study conducted in 2016, six urinary phthalate metabolites were analysed in a total of 370 first morning urine samples of healthy children aged 5 and 9 years, namely mono(2-ethylhexyl) phthalate (MEHP), mono(2-ethyl-5-hydroxyhexyl) phthalate (5OH-MEHP), mono(2-ethyl-5-oxohexyl) phthalate (5oxo-MEHP), mono-benzyl phthalate (MBzP), mono-iso-butyl phthalate (MiBP), and mono-n-butyl phthalate (MnBP). The two latter mono-butyl phthalate isoforms dominated among all samples with geometric means of 63.0 µg/L (MnBP) and 44.1 µg/L (MiBP), followed by 5OH-MEHP (20.6 µg/L), 5oxo-MEHP (12.9 µg/L), MBzP (3.65 µg/L), and MEHP (2.31 µg/L). Daily intake (DI) of the parent phthalates was estimated using the creatinine-based model. The highest DI values were found for di-n-butyl phthalate (DnBP) (median 2.5 µg/kg bw/day; 95th percentile 7.8 µg/kg bw/day) and di-2-ethylhexyl phthalate (DEHP) (median 2.3 µg/kg bw/day; 95th percentile 8.9 µg/kg bw/day) in 5-year-old children. The tolerable daily intake (TDI) set by the European Food Safety Authority (EFSA) was exceeded in case of DnBP (in 1% of 9-year-olds and in 3% of 5-year-olds). Exposure risk was assessed based on hazard quotients calculation and cumulative approach for similar health effect. The combined exposure to four phthalates expressed by hazard index (HI) for reprotoxicity revealed exceeding of HI threshold in 14% of 5-year-olds and in 9% of 9-year-olds. These findings strongly support the need to reduce the burden of children by phthalates.
- MeSH
- dávka bez pozorovaného nepříznivého účinku MeSH
- diethylhexylftalát aplikace a dávkování analogy a deriváty moč MeSH
- dítě MeSH
- hodnocení rizik MeSH
- kreatinin moč MeSH
- kyseliny ftalové aplikace a dávkování moč MeSH
- látky znečišťující životní prostředí aplikace a dávkování moč MeSH
- lidé MeSH
- předškolní dítě MeSH
- školy MeSH
- vystavení vlivu životního prostředí analýza MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mužské pohlaví MeSH
- předškolní dítě MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
- Názvy látek
- diethylhexylftalát MeSH
- kreatinin MeSH
- kyseliny ftalové MeSH
- látky znečišťující životní prostředí MeSH
- mono-(2-ethylhexyl)phthalate MeSH Prohlížeč
- mono-benzyl phthalate MeSH Prohlížeč
- mono-isobutyl phthalate MeSH Prohlížeč
- monobutyl phthalate MeSH Prohlížeč
OBJECTIVE: Vitamin D deficiency is a global health problem. The aim of this study was to determine the proportion of Czech children with vitamin D deficiency and examine related factors. METHODS: The study subjects were 419 healthy children aged 5 and 9 years. Severe vitamin D deficiency was defined as a serum 25(OH)D level of < 25 nmol/L (3% of children), deficiency as that of 25-50 nmol/L (24% of children), insufficiency as that of 50-75 nmol/L (40% of children) and sufficiency as that of > 75 nmol/L (34% of children). RESULTS: Serum 25(OH)D levels varied mainly with season. The highest levels of 25(OH)D were reached in autumn (median: 79.0 nmol/L), followed by summer (median: 67.8 nmol/L) and winter (median: 56.0 nmol/L). The lowest median value (49.8 nmol/L) was detected in spring. CONCLUSION: Children with sufficiency 25(OH)D levels were more frequently exposed to the sun and exposed a larger part of their body to the sun while spending time outdoors. Levels of 25(OH)D were also associated with using vitamin D supplements within six weeks before sampling.
- Klíčová slova
- 25(OH)D levels, Czech Republic, children, human biomonitoring, vitamin D,
- MeSH
- dítě MeSH
- lidé MeSH
- nedostatek vitaminu D epidemiologie MeSH
- předškolní dítě MeSH
- rizikové faktory MeSH
- roční období MeSH
- vitamin D krev MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- předškolní dítě MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika epidemiologie MeSH
- Názvy látek
- vitamin D MeSH
Wine consumption has been popular worldwide for many centuries. Based on in vitro and in vivo studies, a certain amount of everyday wine consumption may prevent various chronic diseases. This is due, in part, to the presence and amount of important antioxidants in red wine, and, therefore, research has focused on them. Wine polyphenols, especially resveratrol, anthocyanins, and catechins, are the most effective wine antioxidants. Resveratrol is active in the prevention of cardiovascular diseases by neutralizing free oxygen radicals and reactive nitrogenous radicals; it penetrates the blood-brain barrier and, thus, protects the brain and nerve cells. It also reduces platelet aggregation and so counteracts the formation of blood clots or thrombi. The main aim of this review is to summarize the current findings about the positive influence of wine consumption on human organ function, chronic diseases, and the reduction of damage to the cardiovascular system.
- Klíčová slova
- alcohol, antioxidants, health, human, phenolic compounds, red wine,
- MeSH
- antioxidancia analýza chemie MeSH
- lidé MeSH
- ochranné látky farmakologie MeSH
- pití alkoholu * MeSH
- randomizované kontrolované studie jako téma MeSH
- víno * MeSH
- zdraví * MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
- Názvy látek
- antioxidancia MeSH
- ochranné látky MeSH
The COPHES/DEMOCOPHES twin project was performed in 2011-2012 in 17 European countries to harmonize all steps of the human biomonitoring survey. Urinary cadmium, cotinine, phthalate metabolites, and hair mercury were measured in children (N = 120, 6-11 years) and their mothers of reproductive age, living in urban or rural areas. Cadmium in mothers' and children's urine was detected at a geometric mean (GM) concentration 0.227 and 0.109 μg/L, respectively; 95th percentile (P95) was 0.655 and 0.280 μg/L in mothers and children, respectively. No age-related, education-related, or urban versus rural differences were observed within the frame of each population group. Cadmium urinary level in mothers was about twofold compared with children. Higher levels were obtained in all smoking mothers but not in occasionally smoking or mothers and children exposed to environmental tobacco smoke (ETS). Mercury values in mothers were significantly higher in urban than in rural populations but not in children. GM and P95 for mercury in children's hair were 0.098 and 0.439 μg/g and in mothers' hair were 0.155 and 0.570 μg/g. Concentrations for mercury in the Czech samples were lower than European average. Hair mercury increased significantly with consumption of fish or seafood and with number of amalgam tooth fillings (in children). A positive association was found with family educational level. No influence of age was observed. Urinary cadmium and hair mercury levels were lower than health-based guidelines with one exception. High levels of urinary cotinine were found in the 12 smoking mothers (GM approximately 500 μg/L); lower levels in occasionally smoking mothers, N = 11 (34.5 μg/L). The mean cotinine levels in nonsmoking mothers who reported daily exposure to ETS was 10.7 μg/L. A similar mean value (10.8 μg/L) was obtained in six children who had daily exposure to ETS. In children without exposure to ETS, the mean cotinine level was 1.39 μg/L urine. Cotinine in the urine of children demonstrates limited protection of the Czech children against exposure to ETS.
- Klíčová slova
- Cotinine, Cotinine Level, Environmental Tobacco Smoke, Environmental Tobacco Smoke Exposure, Geometric Mean,
- MeSH
- dítě MeSH
- dospělí MeSH
- kadmium analýza moč MeSH
- kotinin analýza moč MeSH
- látky znečišťující životní prostředí analýza moč MeSH
- lidé MeSH
- matka - expozice noxám statistika a číselné údaje MeSH
- matky MeSH
- vlasy, chlupy chemie MeSH
- vystavení vlivu životního prostředí statistika a číselné údaje MeSH
- Check Tag
- dítě MeSH
- dospělí MeSH
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
- Názvy látek
- kadmium MeSH
- kotinin MeSH
- látky znečišťující životní prostředí MeSH
Persistent organic pollutants, such as perfluorinated alkylated substances (PFASs) and brominated flame retardants (BFRs) are widespread in the environment and most of them are bioaccumulated in wildlife and humans. The present study is the first investigation to reveal the PFAS and BFR levels of serum samples in the adult population of the Czech Republic. Altogether, 300 serum samples from blood donors in four cities were examined. In all samples 19 PFASs and 33 BFRs, including some of their metabolites, were targeted. The analyses were performed using ultra high performance liquid chromatography coupled with tandem mass spectrometry or gas chromatography with mass spectrometry (according to the type of analyte). PFASs, with the carbon chain length C6 and higher, dominated in all samples. Perfluorooctanesulfonate (PFOS; median: 2.43ng/mL), perfluorooctanoic acid (PFOA; median: 0.756ng/mL), perfluorodecanoic acid (PFDA; median: 0.145ng/mL) and perfluorohexanesulfonate (PFHxS; median: 0.184ng/mL) were detected in 100% of samples. Perfluorononanoic acid (PFNA; median: 0.325ng/mL) and perfluoroundecanoic acid (PFUdA; median: 0.058ng/mL) in 99.7% and 96.0% of samples, respectively. We observed statistically significant associations (p<0.05) between selected PFAS concentrations and the locality, gender, age of donors and education level. None of the BFRs was detected above the LOQ in more than 9% of the samples. The most frequently detected representatives of this group were congeners of polybrominated diphenyl ethers, namely BDE-47 (in 8.7%; range: 0.496-5.44ng/g lipid weight (l.w.)), BDE-99 (in 6.0%; range: 0.706-9.46ng/g l.w.), BDE-153 (in 7.3%; range: 0.736-6.44ng/g l.w.) and BDE-209 (in 7.0%; range: 13.7-2693ng/g l.w.).
- Klíčová slova
- Brominated flame retardants, Czech Republic, Human biomonitoring, Perfluorinated alkylated substances, Persistent organic pollutants,
- MeSH
- dospělí MeSH
- fluorokarbony krev MeSH
- halogenované difenylethery krev MeSH
- kyseliny alkansulfonové krev MeSH
- kyseliny karboxylové krev MeSH
- látky znečišťující životní prostředí krev MeSH
- lidé středního věku MeSH
- lidé MeSH
- městské obyvatelstvo MeSH
- mladiství MeSH
- mladý dospělý MeSH
- monitorování životního prostředí MeSH
- polybrombifenylové sloučeniny krev MeSH
- retardanty hoření analýza MeSH
- senioři MeSH
- velkoměsta MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mladiství MeSH
- mladý dospělý MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- Geografické názvy
- Česká republika MeSH
- velkoměsta MeSH
- Názvy látek
- fluorokarbony MeSH
- halogenované difenylethery MeSH
- kyseliny alkansulfonové MeSH
- kyseliny karboxylové MeSH
- látky znečišťující životní prostředí MeSH
- polybrombifenylové sloučeniny MeSH
- retardanty hoření MeSH
Since 1991 a human biomonitoring network has been established in the Czech Republic as part of the Environmental Health Monitoring System, which was set out by the Government Resolution. During the last quarter-century, important data was obtained to characterize exposure to both children and adult populations to significant toxic substances from the environment, to development trends over time, to establish reference values and compare them with existing health-related values. Moreover, the saturation of population with several essential substances as selenium, zinc, copper or iodine has also been monitored. Development of analytical and statistical methods led to increase the capacity building, improvement of QA/QC in analytical laboratories and interpretation of results. The obtained results are translated to policy actions and are used in health risk assessment processes at local and national levels.
- Klíčová slova
- Czech Republic, General population, Human biomonitoring, Time trends,
- MeSH
- dítě MeSH
- dospělí MeSH
- látky znečišťující životní prostředí analýza krev moč MeSH
- lidé MeSH
- mateřské mléko chemie MeSH
- monitorování životního prostředí statistika a číselné údaje MeSH
- vlasy, chlupy chemie MeSH
- Check Tag
- dítě MeSH
- dospělí MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
- Názvy látek
- látky znečišťující životní prostředí MeSH
