Cadmium, arsenic, selenium and iron- Implications for tumor progression in breast cancer.

The aim of this study was to determine Cd (cadmium) and As (arsenic) contents in human breast cancer tissues, investigate their interactions with Se (selenium) and Fe (iron), and assess their further implications for tumor progression. Metal contents were determined in 42 tissue sets (tumor and adjacent tissue) collected from 42 women diagnosed with primary breast cancer. Analytical methods included AAS and ICP-MS techniques. Significantly higher contents of Cd (p=0.0003), Se (p<0.0001) and Fe (p=0.0441) whereas significantly lower content of As (p<0.0001) were observed in tumors as compared to adjacent tissues. There was a significant positive correlation between Cd and As contents in tumor tissue. However, only Cd was significantly associated with histological type of tumor, its size, grading and progesterone receptor status. This study support the role of Cd in breast cancer risk and progression. The possible link between As exposure and breast cancer is still not clear.

DNA damage and oxidative stress response to selenium yeast in the non-smoking individuals: a short-term supplementation trial with respect to GPX1 and SEPP1 polymorphism.

PURPOSE: Selenium, both essential and toxic element, is considered to protect against cancer, though human supplementation trials have generated many inconsistent data. Genetic background may partially explain a great variability of the studies related to selenium and human health. The aim of this study was to assess whether functional polymorphisms within two selenoprotein-encoding genes modify the response to selenium at the level of oxidative stress, DNA damage, and mRNA expression, especially in the individuals with a relatively low selenium status. METHODS: The trial involved 95 non-smoking individuals, stratified according to GPX1 rs1050450 and SEPP1 rs3877899 genotypes, and supplemented with selenium yeast (200 µg) for 6 weeks. Blood was collected at four time points, including 4 weeks of washout. RESULTS: After genotype stratification, the effect of GPX1 rs1050450 on lower GPx1 activity responsiveness was confirmed; however, in terms of DNA damage, we failed to indicate that individuals homozygous for variant allele may especially benefit from the increased selenium intake. Surprisingly, considering gene and time interaction, GPX1 polymorphism was observed to modify the level of DNA strand breaks during washout, showing a significant increase in GPX1 wild-type homozygotes. Regardless of the genotype, selenium supplementation was associated with a selectively suppressed selenoprotein mRNA expression and inconsistent changes in oxidative stress response, indicating for overlapped, antioxidant, and prooxidant effects. Intriguingly, DNA damage was not influenced by supplementation, but it was significantly increased during washout. CONCLUSIONS: These results point to an unclear relationship between selenium, genotype, and DNA damage.

The effect of Cirsium arvense extract on antioxidant status in quail.

1. The herb Creeping Thistle, Cirsium arvense (C. arvense), has been used in folk medicine due to its antioxidant and anti-inflammatory effects. 2. The aim of this study was to investigate the effects of dietary C. arvense extract supplementation on performance, egg quality, nutrient digestibility and antioxidant status in quail. 3. Quails (n = 150) were allocated randomly to one of the three dietary treatments: basal diet and basal diet enriched with 100 and 200 mg C. arvense extract per kg diet. 4. Dietary enrichment with C. arvense extract altered neither performance and egg quality parameters nor nutrient digestibility. Although there were no changes in concentrations of vitamin A and E in serum, liver and egg yolk, supplemental C. arvense extract decreased MDA concentrations in serum, liver and egg yolk by 39.3, 40.5 and 51.5%, respectively, in a dose-response manner. As supplemental C. arvense extract increased to 200 mg/kg, the activity of hepatic SOD, CAT and GSH-Px increased by 14.5, 17.4 and 35.5%, respectively. 5. Addition of C. arvense extract up to 200 mg to per kg diet enhanced antioxidant status in laying quail and their eggs, without affecting performance and other egg quality parameters. 6. Future studies are needed to elucidate the mechanism behind the antioxidant effects of C. arvense extract.

Index of clinical consequences of untreated dental caries (pufa) in primary dentition of children from north-east Poland.

PURPOSE: The purpose of this study was to evaluate the prevalence and experience of clinical consequences of untreated dental caries in primary dentition in 5 and 7 year-old children from north-east Poland and to find whether there is a correlation between dmft and pufa indices. MATERIAL/METHODS: Two hundred fifteen children aged 5 and 7 years living in the Podlaskie region were examined in the course of the Polish National Oral Health Survey 2011. Caries prevalence and experience in primary dentition was evaluated according to WHO criteria (dmft index). The clinical consequences of untreated dental caries were assessed by pufa index. RESULTS: The dmft index was 5.56 ± 4.45 in 5-years-old children and 6.69 ± 3.14 in 7-years-olds. The prevalence/experience of pufa index was 43.4%/2.20 ± 3.43 and 72.4%/2.44 ± 2.22, respectively. Children living in rural areas presented a worse dental condition. A statistical analysis revealed a strong relation between dmft and pufa in both age groups. CONCLUSION: The present study revealed negligence in the dental treatment of children from north-east Poland resulting in the high prevalence and experience of the pufa index in primary dentition. This index is a valuable measurement tool to record the clinical consequences of untreated dental caries.

Continuing dental education in the treatment of dental avulsion: Polish dentists' knowledge of the current IADT guidelines.

OBJECTIVES: To evaluate the knowledge and experience of the treatment of avulsed teeth amongst Polish dentists 5 years after the publication of IADT guidelines. METHODS: On the basis of IADT guidelines, a voluntary anonymous 12-item questionnaire was developed to evaluate dentists' knowledge on the treatment of avulsed teeth. The survey was conducted during three continuing education courses, which took place in Bialystok, Poland and covered 133 dentists. Data were analysed with Statistica 6.0 using Mann-Withney U- and Kruskal-Wallis tests (P < 0.05). RESULTS: The study revealed that Polish dentists were not prepared to deal with dental avulsion. 63.2% of respondents have never treated such patients, and 68.45% have never attended any postgraduate course on dental trauma. Sufficient knowledge was presented only according to the way of cleaning a contaminated tooth. Lack of knowledge was observed in fields: method of choice in first aid in dental avulsion (23.3% of correct answers) and critical extra-oral dry time (26.3%). Dentists practising <10 years had better knowledge than those with greater experience (P = 0.0000). Gender, previous experience in the treatment of avulsion, postgraduate education in dental trauma and subjective knowledge assessment were not statistically significant. CONCLUSIONS: There is a gap in the system of continuing dental education in Poland. Polish dentists need to familiarise themselves with the avulsion management procedures.

Ethanolic extract of propolis, chrysin, CAPE inhibit human astroglia cells.

PURPOSE: The aim of the present study was to examine the effect of freeze dried ethanolic extract of propolis (EEP), chrysin and caffeic acid phenethyl ester (CAPE) dependently on their concentrations on the viability and morphology of human astroglia cells line (SVGp12). MATERIAL AND METHODS: Using gas chromatography - mass spectroscopy (GC-MS) we have established the composition of lyophilisate of EEP collected in Podlasie region (Poland). After 24 h, 48 h and 72 h of exposition to EEP or its ingredients we evaluated the survivability of human astroglia cells (SVGp12) using MTT test. Morphological analysis of human astroglia cells was defined by transmission electron microscope. RESULTS: About 70 ingredients of EEP were evaluated by GC-MS. We obtained the strong decline of viability of astroglia cells SVGp12 approximately to 16% after EEP; 33% after chrysin and 25% after CAPE application. Condensed form of mitochondria observed in transmission electron microscope may indicate activation of intrinsic pathway of apoptosis induced by EEP, chrysin and CAPE in SVGp12 cell line. CONCLUSION: This study showed that EEP, chrysin and CAPE reduced viability of human astroglia cells probably due to apoptosis process.

Is xerostomia a risk factor for cardiovascular morbidity and mortality in maintenance hemodialysis patients?

Xerostomia resulting mostly from hyposalivation and alkaline salivary pH is a frequent but often underappreciated symptom in the diseased population of maintenance hemodialysis (HD) patients. We reviewed also other xerostomia-predisposing factors, its specific dental and oral clinical signs and features, as well as plausibly detrimental dialysis-specific pro-atherosclerotic and cardiovascular consequences. In view of increasing multidisciplinary importance of xerostomia, its general, pharmacological and emerging treatment methods were presented. Special attention was paid to the untoward and often neglected pro-xerostomic effects of multiple common medications and substances; they were listed and described in more detail. The combined therapeutic approach of dentists and nephrologists may effectively alleviate xerostomia and support general health condition of maintenance hemodialysis patients.

Organ retrieval in donors suspected of cancer: single-center experience.

BACKGROUND: The transmission of cancerous cells with a transplanted organ is among the most serious complications of transplant surgery. Detailed preoperative tests seek to reduce the risk of transmission of viral and bacterial infections as well as to prevent donor-derived malignancy following organ transplantation. The objective of this study was to report our experience among cadaveric donors who we suspected of cancer. MATERIALS AND METHODS: We performed a retrospective search of the medical records of 75 potential cadaveric donors referred to our unit between January 2007 and December 2010. Our focus, however, was on donors suspected of cancer. RESULTS: Among 75 potential cadaveric donors 22 (29%) revealed features suggestive of cancer: physical signs of tumor pre- or intraoperatively: elevation of serum levels of a cancer marker; or an abnormal finding on radiological imaging. Among the latter group, 15 donors necessitated urgent histopathologic examination to rule out or confirm cancer. In four cases, organ transplantation was abandoned following the examination, including three cases in which a tissue diagnosis of cancer was evident and in one case, the examination was inconclusive to exclude cancer. In the remaining 14 cases, the histopathologic examination did not reveal cancer; thus transplantation was performed. CONCLUSIONS: Thorough histopathologic examination is essential in all potential donors who are suspected of cancer to prevent donor-derived malignancy following transplantation. In some cases, however, the tissue sampling is not conclusive; hence, transplantation must be abandoned. Even the most precise examination of the donor does not protect the recipient from the risk of transmission of cancer.

Diet and the content of selenium and lead in patients with abdominal aortic aneurysm.

BACKGROUND: To evaluate the content of selenium (Se) and lead (Pb) and the influence of dietary habits and smoking in patients with abdominal aortic aneurysm (AAA). PATIENTS AND METHODS: Forty-nine patients with AAA prior to surgical procedures aged 42 - 81 years and a control group of 22 healthy volunteers aged 31 - 72 years and 17 aortic wall samples from deceased were included in the study. Food-frequency questionnaires were implemented in AAA patients to collect the dietary data. Se and Pb concentrations in the serum and blood, respectively, and in arterial wall and parietal thrombus samples were determined by the atomic absorption spectrometry method. RESULTS: The mean Se level in serum of patients with AAA (60.37 ± 21.2 cm/L) was significantly (p < 0.008) lower than in healthy volunteers (75.87 ± 22.4 cm/L). We observed a significant correlation (r = 0.69, p < 0.0001) between the content of Se in serum and the parietal thrombus of examined patients. Se concentration in aortic wall was inversely correlated to the concentration of Pb (r = - 0.38, p < 0.02). We observed significantly lower (p < 0.05) concentrations of Se (39.14 ± 37.1 cm/g) and significantly higher (p < 0.05) concentrations of Pb (202.69 ± 180.6 cm/g) in aortic wall samples of smoking patients than in non-smoking patients (77.56 ± 70.0 cm/g, 73.09 ± 49.8 cm/g; respectively). CONCLUSIONS: Se serum level is lower in patients with AAA than in healthy volunteers. In aortic wall, Se concentration is inversely correlated with Pb concentration. Dietary habits and smoking have an influence on the Se and Pb status in patients with AAA.

Cell viability of normal human skin fibroblast and fibroblasts derived from granulation tissue: effects of nutraceuticals.

The effects of lycopene, genistein, and epigallocatechin-3-gallate (EGCG) on cell viability were tested in vitro using a normal human skin fibroblast (NHSF) cell line (CRL-1474) and granulation tissue fibroblasts (GTFs) obtained from a patient with middle ear cholesteatoma. Cell cultures were added with lycopene (1, 5, and 10 microM), genistein (1, 5, 10, 25, and 50 microM), and EGCG (1, 5, 10, 25, and 50 microM) and their respective control cultures were established by adding 5 mL/L tetrahydrofuran (THF), 5 mL/L dimethyl sulfoxide (DMSO), and 5 mL/L DMSO. A colorimetric assay was employed for determining cell viability using thiazolyl blue tetrazolium bromide. Cell viability was expressed as a percentage of the control. Data were analyzed using two-way analysis of variance separately for each compound. Lycopene addition decreased viability of NHSFs and GTFs compared with THF addition (64.1%, 60.5%, and 100%, respectively, P < .0001). Genistein addition also increased viability of both NHSFs and GTFs compared with DMSO addition (P < .02). Increasing EGCG concentration tended to cause a linear increase in viability of NHSFs but did not alter viability of GTFs (P < .10). Our data suggest that genistein and EGCG but not lycopene could help maintaining or improving skin health through enhancing viability of skin fibroblasts.

Spectroscopic (FT-IR, FT-Raman, UV) and microbiological studies of di-substituted benzoates of alkali metals.

The FT-IR, FT-Raman and UV spectra of 3,5-dihydroxybenzoic and 3,5-dichlorobenzoic acids as well as lithium, sodium, potassium, rubidium, caesium 3,5-dihydroxy- and 3,5-dichlorobenzoates were recorded, assigned and compared. The theoretical geometries, Mulliken atomic charges, IR wavenumbers were obtained in B3LYP/6-311++G** level. On the basis of the gathered experimental and theoretical data the effect of metals and substituents on the electronic system of studied compounds were investigated. Moreover, the antimicrobiological activity of studied compounds against two species of bacteria: Bacillus subtilis, Staphylococus aureus and one species of yeast: Candida albicans were studied after 24 and 48 h of incubation. The attempt was made, to find out whether there is any correlation between the first principal component and the degree of growth inhibition exhibited by studied compounds in relation to selected microorganisms.

The evaluation of CPITN index among adults living in Podlasie region.

The aim of this study was to evaluate the condition and treatment needs of the periodontium in adults living in Podlasie region. Checked population was divided into three groups: 18 year old, 35-44 and 65-74 year old. The assessment of the periodontium status was performed on the basis of CPITN index. The study showed that young people usually did not need any periodontal treatment. The predominating treatment need was removing of dental calculus, respectively 7.4% subjects aged 18, 62.5% of second group and 58.7% of the oldest one. 10% persons aged 35-44 and 6.9% persons aged 65-74 required complex periodontal treatment. The number of excluded sextants grown with aged.

Vibrational and microbiological study on alkaline metal picolinates and o-iodobenzoates.

FT-IR and Raman experimental data were assigned to appropriate bond vibrations and used to compare the different electronic charge distributions in the aromatic rings and carboxylic anions of various lithium, sodium, potassium, rubidium and caesium o-iodobenzoates and picolinates. Then principal component analysis (PCA) was applied in order to attempt to distinguish the biological activities of these compounds according to selected band wavenumbers. The growth of the bacteria Escherichia coli and Bacillus subtilis and the yeasts Saccharomyces cerevisiae and Hansenula anomala under optimal growth conditions were measured after 24 hours of incubation by the classical plate method. The influence of the picolinates and o-iodobenzoates on the growth of these microorganisms, again after 24 hours of incubation, was also measured and compared to the effect of sodium benzoate, which was used as a reference material. In general, the o-iodobenzoates exhibited more activity against the microorganisms than the picolinates. A statistically significant linear correlation between the spectral data and the degree of influence of a given compound on microorganism growth was established. The correlation coefficients for the o-iodobenzoates were 0.696, -0.628, 0.693 and 0.755 for E. coli, B. subtilis, H. anomala and S. cerevisiae, respectively, and for the picolinates they were 0.818, 0.826, 0.821 and 0.877 for E. coli, B. subtilis, H. anomala and S. cerevisiae, respectively. Therefore, IR spectroscopy is shown to be a rapid and reliable analytical tool for preliminary estimation of the antimicrobial properties of newly synthesized compounds, that can be applied before microbial performance tests.

The relationship between chemical structure and antimicrobial activity of selected nicotinates, p-iodobenzoates, picolinates and isonicotinates.

Alkaline metal, calcium and magnesium p-iodobenzoates and alkaline metal nicotinates, as well as sodium and potassium picolinic and isonicotinates were investigated by means of their antimicrobial and chemical properties. The quality estimation of the influence of metal cation coordinated to the carboxylic anion of the series of studied compounds on their antimicrobial activity as well as on the vibrational structure of whole complex in water solution was done. The changes in antimicrobial properties and in charge distribution of the complex along the position of nitrogen atom in the aromatic ring in sodium and potassium complexes were investigated. The analysis of influence of iodine substituent in para position on the change of electronic charge distribution of carboxylate anion and aromatic ring was done. The relationship between electronic properties estimated by vibrational spectroscopy and antimicrobial activity of studied complexes was investigated.

The evaluation of total dietary fibre content in standard hospital diets during the winter and summer seasons.

The main aim of the study was to determine the total dietary fiber in standard diets for hospitalized patients in winter and summer. In the randomized trial performed in the winter of 1995/1996 and summer 1997, we assessed the dietary fiber content in 12 standard diets with AOAC method. The dietary fiber in the tested hospital diets was derived mainly from grains--average value 12.2 g/day in winter and 15.8 g/day in summer. The second group of plant products to supply fiber in the diet were vegetables. Food portions covered an average of 11.5 g dietary fiber per day in winter and 8.5 g in summer. In spite of the variety of cheap vegetables on sale, a significantly lower content of fiber was observed in summer (p < 0.05). Fruits and fruit products in hospital food contained 1.4 g/day of fiber in winter and 1.7 g/day in summer respectively. We also made a simulation, where white bread, present in every diet, was replaced by dark bread. This let us determine the degree to which the alternative food product influences the diet's composition. The results demonstrate that the replacement everyday of eaten food products may evoke significant changes in dietary fiber contents. The change induced statistically significant differences between diets containing white bread and dark bread (p < 0.001).

[The role of dietary fiber and its preparations in the protection and treatment of overweight]. / Znaczenie blonnika pokarmowego i jego preparatów w zapobieganiu i leczeniu nadwagi.

Optimal amounts of dietary fibre in the diet are regarded as a protective factor against several health disorders such as some alimentary tract diseases, atherosclerosis and coronary heart disease. It is considered that the dietary fibre may help reduce body weight. The preparations of dietary fibre slow gastric emptying and decrease the appetite. However, the reduction of body weight with the application of high fibre diets, but without a change in the eating habits, is not significant.

Nitrate and nitrite content in daily hospital diets during the winter season--comparison of analytical and calculation methods.

A comparison of two methods: analytical and calculation on an estimation of dietary intakes of nitrate and nitrite from six different types of general hospital diets was studied. Studies were performed in the winter season of 1996-1997. It was found that the mean daily intake of nitrates was 85 mg per person in the analytical method, and 65 mg per person in the calculated method. The estimation of average dietary intakes of nitrite was adequate: 1.67 mg per person (the analytical method) and 1.18 mg per person (the calculated method). The main source of nitrates were vegetables, whereas the main source of nitrites was meat and meat-containing products. We suggest that the different methodologies, analytical and calculation methods, for measuring dietary intakes of nitrate and nitrite from diets make it possible to make direct comparisons of intakes.

Nitrates and nitrites contents in whole-day's diets of men--workers of metal industry.

An evaluation of nitrates and nitrites in daily diets of 239 men was performed. It was found that daily intake of these compounds did not exceed the acceptable values.

The nitrate and nitrite contents in a whole day's hospital diet during the spring season.

It was decided to evaluate the exposition of patients on nitrates and nitrites contained in 6 whole day's standard hospital diets taken in various days. Studies were performed in June 1995. It was found that the mean daily intake of nitrates was 311 mg and the mean intake of nitrites were 2.16 mg per patient. The main source of nitrates were vegetables (85%), whereas the main source of nitrites were meat and meat-containing products. The presented results suggest that the diets containing early vegetables (especially cabbage) may be harmful for human health.