Future time perspective and academic procrastination among nursing students: The mediating role of mindfulness.

AIM: To explore the relationship between university nursing students' academic procrastination, mindfulness, and future time perspective. DESIGN: A cross-sectional study. METHODS: A total of 343 university nursing students recruited from eight provinces in China have reported procrastination characteristics through fulfilling an online website link. The main instruments involved Mindfulness Attention Awareness Scale (MAAS), Zimbardo Time Perspective Scale, and Procrastination Assessment Scale (PASS). RESULTS: Participants who self-assessed higher frequency and degree of academic procrastination tended to possess lower future time consciousness, and lower mindfulness. Mindfulness served as a mediation effect between future time perspective and academic procrastination. The study indicates that weakening an individual's procrastination can be alleviated through future time awareness and mindfulness. Concentrating on influencing factors, strengthening nursing student's future time perspective, and practicing mindfulness training could assist educators to decrease students' procrastination intentions and behaviours.

Synthesis and biological evaluation of scutellarein derivatives as neuroprotective agents via activating Nrf2/HO-1 pathway.

Oxidative stress has been considered as the main factor of neurodegenerative diseases. Activation of the Nrf2/HO-1 pathway, as one of the most crucial endogenous protection systems, was regarded as an effective strategy to against oxidative injury. Here, a series of phosphate esters or phosphonates of scutellarein derivatives were designed, synthesized and evaluated on SH-SY5Y cell lines to examine neuroprotective effects against H2O2 induced damage. Among them, compound 16d exhibited more potent cytoprotective effect than the lead compound scutellarin. Preliminary mechanism studies showed that compound 16d could prevent H2O2 induced neuronal apoptosis, significantly decrease ROS generation, elevate SOD and reduce MDA levels in a dose-dependent manner in SH-SY5Y cell lines. Furthermore, western blot assay disclosed that compound 16d could activate Nrf2, and increase the expression of its downstream genes HO-1 in a concentration-dependent manner, thus displaying potent neuroprotective activity. Overall, these findings demonstrated that compound 16d, as a promising neuroprotective agent, deserved further development.

Source apportionment of heavy metal and their health risks in soil-dustfall-plant system nearby a typical non-ferrous metal mining area of Tongling, Eastern China.

The agricultural land-atmospheric dustfall-plant system around the mining area is at high risks of heavy metal pollution caused by mining-smelting activities. In this study, 118 samples (including rhizospheric soils, background soils, soil-forming parent rocks, crops, vegetables, medicinal plants and atmospheric dustfall) were collected nearby Tongling Cu-Fe-Au mining area, Eastern China. We studied the concentrations, migration, sources, and health risks through consumption of two main crops (corn and rice), six kinds of vegetables, and medicinal plants (Fengdan, Paeonia ostii) for six metal elements (Cu, Zn, Cr, Cd, Pb and Hg). Results revealed Cr and Cd in soils, and Cd, Cr, Pb, Cu and Zn in dustfall showed a relatively high contamination degree. The mean contents of Cr and Pb in corn kernels, as well as Cd, Cr and Pb in rice grains and all vegetables, and Cr in Fengdan cortex moutan exceeded the corresponding food safety limits in China. The transfer capability of Cr in corn kernels and rice grains, Pb in edible vegetables, and Cd in cortex moutan were the strongest, respectively. Health risk assessment results showed Cr had the greatest non-carcinogenic risk, followed by Pb and Cd. The results of pearson's correlation analysis (CA), hierarchical cluster analysis (HCA), and principal component analysis (PCA) indicated Zn-Cr, Pb and Cd-Cu-Hg in the plants might derive from different geochemical end-members. Source apportionment based on lead isotope showed that mining-smelting activities were the major source of Pb in atmospheric dustfall and agricultural soils, with the average contribution rates of 66% and 50%, respectively. Vehicle emissions from diesel fuels (50%-68%) and mining-smelting activities (16%-25%) contributed mainly to Pb accumulation in plants. Hence, our study suggested the accumulations of Pb in plants might be mainly from the direct foliar uptake of atmospheric Pb related to vehicle emissions and mining-smelting activities.

[Effect of zishen shengxue recipe on endogenous erythropoietin in patients with renal anemia undergoing long-term hemodialysis].

OBJECTIVE: To investigate the mechanism of Zishen Shengxue Recipe (ZSR) in treating renal anemia by observing its effect on serum level of endogenous erythropoietin in patients undergoing long-term hemodialysis. METHODS: Sixty renal anemia patients undergoing long-term hemodialysis were randomly and equally assigned to two groups. The treated group was treated with subcutaneous injection of erythropoiesis stimulating factor (rHuEpo) combined with oral intake of ZSR, and the control group treated with rHuEpo alone. They were observed for eight weeks, and the blood levels of endogenous human erythropoietin (Epo), hemoglobin (Hgb), hematocrit (Hct), as well as the residual renal function (RRF) in the two groups were compared. RESULTS: Serum Epo level in the control group was unchanged after treatment (P>0.05), while that in the treated group increased significantly, and showed significant difference in comparing with that in the control group (P<0.05). Levels of Hgb and Hct increased and RRF decreased in both groups (P<0.01), but the treated group showed higher increments and lesser decrement than those in the control group (P<0.05). CONCLUSIONS: ZSR can enhance the blood levels of Hgb, Hct and Epo, postpone the descent of RRF, and correct the anemic status in patients. Its mechanism of action is possibly through alleviating the inhibition of uremic toxin on erythropoiesis, in the meanwhile of promoting the secretion of Epo.