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Circular RNA 0007255 regulates the progression of breast cancer through miR-335-5p/SIX2 axis.

Breast cancer (BC) is a common cancer in women worldwide. Emerging evidence has indicated that circular RNA hsa-circ_0007255 (circ_0007255) is a prognostic mediator in BC progression. However, the functional role of circ_0007255 needs to be determined.

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[The Good, the Bad and the Ugly: The Relationship between social Media Use, Subjective Health and Risk Behavior Among Children and Adolescents].

The current generation of young people spends more time using social media than any other age group. So far, not much is known about the consequences of social media use in terms of health and well-being among teenagers in Germany. The aim of the study was to investigate the association between social media use, health and risk behavior using data from a large representative sample for Germany.

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[On Statistical Underreporting of Norovirus-Infections: Insights from Register Data of Two Local Public Health Authorities].

Only laboratory-confirmed norovirus (NoV) cases have to be notified to the Robert Koch Institute (RKI) since 2011, but not other, e. g. clinical-epidemiological cases. It can be assumed that the extent of underreporting of NoV cases in Germany has significantly increased since then.

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Biomarkers for the Assessment of Fluoride Exposure in Children.

Due to practical difficulties in quantifying fluoride exposure, the ability of various biomarkers to predict exposure has been investigated previously. However, the results are inadequate for validation of their application and usefulness. This study aimed to investigate the association between contemporary/recent biomarkers of fluoride exposure and total daily fluoride intake (TDFI) of children with large differences in fluoride exposure through drinking water. TDFI was assessed in 61 healthy 4- to 5-year-old children who provided at least 1 biomarker sample; 32 lived in a low-fluoride area (0.04 mg F/L) and 29 lived in a high-fluoride area (3.05 mg F/L). Validated questionnaires were administered to evaluate fluoride intake from diets (including water) and toothpaste ingestion. Daily urinary fluoride excretion (UFE) and fluoride concentrations in plasma, fasting whole saliva, hair, and nails (toenails/fingernails) were evaluated and related to total fluoride exposure. TDFI, UFE, and fluoride concentrations of biomarkers were statistically significantly higher in the high-fluoride area than in the low-fluoride area. There was a strong statistically significant positive correlation between TDFI and UFE (ρ = 0.756, p < 0.001); plasma fluoride concentration (ρ = 0.770, p < 0.001); and toenail fluoride concentration (ρ = 0.604, p < 0.001). The statistically significant positive correlation between TDFI and fingernail fluoride concentration (ρ = 470, p < 0.001) as well as between TDFI and fasting whole saliva fluoride concentration (ρ = 0.453, p = 0.001) was moderate, whereas it was weak between TDFI and hair fluoride concentration (ρ = 0.306, p = 0.027). In conclusion, the current study confirmed the suitability of 24-h urine samples for estimating fluoride exposure in children. The strong correlations between TDFI and fluoride in plasma and toenails also suggest these biomarkers may be considered for health risk assessments of fluoride in children who are susceptible to development of dental fluorosis.

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A Moan of Pleasure Should Be Breathy: The Effect of Voice Quality on the Meaning of Human Nonverbal Vocalizations.

Prosodic features, such as intonation and voice intensity, have a well-documented role in communicating emotion, but less is known about the role of laryngeal voice quality in speech and particularly in nonverbal vocalizations such as laughs and moans. Potentially, however, variations in voice quality between tense and breathy may convey rich information about the speaker's physiological and affective state. In this study breathiness was manipulated in synthetic human nonverbal vocalizations by adjusting the relative strength of upper harmonics and aspiration noise. In experiment 1 (28 prototypes × 3 manipulations = 84 sounds), otherwise identical vocalizations with tense versus breathy voice quality were associated with higher arousal (general alertness), higher dominance, and lower valence (unpleasant states). Ratings on discrete emotions in experiment 2 (56 × 3 = 168 sounds) confirmed that breathiness was reliably associated with positive emotions, particularly in ambiguous vocalizations (gasps and moans). The spectral centroid did not fully account for the effect of manipulation, confirming that the perceived change in voice quality was more specific than a general shift in timbral brightness. Breathiness is thus involved in communicating emotion with nonverbal vocalizations, possibly due to changes in low-level auditory salience and perceived vocal effort.

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Known fentanyl use among clients of harm reduction sites in British Columbia, Canada.

North America is in the midst of an opioid overdose epidemic and it is commonly suggested that exposure to fentanyl is unknown. Using a provincial survey of harm reduction site clients, we aimed to characterize known and unknown fentanyl use and their correlates among people who use drugs in British Columbia, Canada.

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Anticancer activity of 4'-phenyl-2,2':6',2″-terpyridines - behind the metal complexation.

Terpyridine complexes are known for their broad biological activities, of which their anticancer potency is the most extensively studied. Strikingly, free ligand activity has rarely been described in the literature. In this study, a lipophilic derivative of terpyridine 4'-(1-decyl-2,3-triazol-4-yl)phenyl-2,2':6',2″-terpyridine (L) and its complexes were investigated to determine their mechanism of anticancer activity. Our results show that a free ligand expresses the same level of activity on a panel of cancer cells with a low toxicity towards normal fibroblasts as complexes with Cd, Zn or Cu. Breast cancer (MCF-7 cell line) was the most vulnerable for the tested compounds with the IC values in the nanomolar range (IC = 40 nM for L.) The addition of Cu(II) ions increased its activity even further, thus suggesting that ligand exchange and ROS production are the main components of its activity. A cell cycle analysis indicated its inhibition at the G0/G1 phase and the subsequent apoptosis as the cell death mode. A detailed analysis of the protein level that was involved in the aforementioned processes confirmed previous results. Furthermore, the reactive oxygen species generation and DNA intercalation confirmed its cleaving activity.

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Assessment method for deamidation in proteins using carboxylic acid derivatization-liquid chromatography-tandem mass spectrometry.

An analytical method for the degree of protein deamidation has been developed by using carboxy group derivatization and liquid chromatography-tandem mass spectrometry (LCMS/MS). The fragment peptides (LGEYGFQNALIVR and YNGVFQECCQAEDK) obtained by digesting bovine serum albumin (BSA) with trypsin and their asparagine deamidated peptides (LGEYGFQDALIVR and YDGVFQECCQAEDK) were selected as model peptides, and their carboxy groups were derivatized with ethylamine. This derivatization enabled a clear distinction between natural peptides and deamidated peptides by mass, allowing for facile distinction by LCMS/MS before and after deamidation. Good linearity was confirmed for four peptides used in this study via isotope dilution mass spectrometry, showing that protein deamidation can be evaluated by the present method. To confirm the validity of this method for the evaluation of deamidation, natural peptides and deamidated peptides were mixed in arbitrary ratios, and degree of deamidation in these solution was analyzed. This confirmed that accurate evaluation was possible at deamidation degree values of ca. 10 %, 5 %, 2.5 %, and 1 %. Additionally, an accelerated storage test of BSA demonstrated that the deamidation of asparagine at position 404 of BSA progressed by 4 % in 9 weeks at 40 °C and pH 8 in the dark, and that the deamidation process can be traced over time.

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Acid treated biochar enhances cadmium tolerance by restricting its uptake and improving physio-chemical attributes in quinoa (Chenopodium quinoa Willd.).

Heavy metals contamination of soil especially with cadmium (Cd) is a serious environmental concern in the current industrial era. Biochar serves as an excellent ameliorating agent depending upon its properties and application rates. In the pot scale study, effect of acid treated (AWSB) and untreated wheat straw biochar (WSB) was studied on physiology, grain yield, Cd accumulation, and tolerance of quinoa with possible health risks. Different levels of Cd (0, 25, 50 and 75 mg kg), AWSB and WSB (1% and 2% (w/w)) were applied in soil. Accumulation of Cd in control plant tissues led to oxidative stress which was shown in terms of increased lipid peroxidation. While biochar application relieved the oxidative damage as confirmed by the low production of HO and TBARS contents. Application of AWSB improved plant growth, pigment contents and gas exchange attributes by limiting the accumulation of Cd in root, shoot and grain of quinoa. Results revealed a significant improvement in the activity of superoxide (SOD), catalase (CAT), ascorbate peroxidase (APX) and peroxidase (POD) with biochar at elevated levels of Cd in soil. Target Hazard Quotient (THQ) remained < 1 in the quinoa grains with WSB and AWSB under Cd stress. These results revealed that AWSB most effectively alleviated Cd toxicity in quinoa thereby decreasing Cd accumulation and regulation of Cd induced oxidative stress triggered by the antioxidant enzymatic system.

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