The relationship between the sources of confidence in overcoming COVID-19 and the improvement of medical students' professional identity: mediation by medical students' attention to COVID-19.

Background: The prevalence of COVID-19 highlights the shortage of human medical resources, and improving medical students' professional identity is crucial to improving this situation. The sources of confidence in overcoming COVID-19 and medical students' attention to COVID-19 were significant factors affecting their professional identity. However, no study has investigated the mediating role of medical students' attention to COVID-19 in their relationship.

The Relationship Between Family Support and e-Learning Engagement in College Students: The Mediating Role of e-Learning Normative Consciousness and Behaviors and Self-Efficacy.

Due to the current COVID-19 pandemic, colleges and universities have implemented network teaching. E-learning engagement is the most important concern of educators and parents because this will directly affect student academic performance. Hence, this study focuses on students' perceived family support and their e-learning engagement and analyzes the effects of e-learning normative consciousness and behaviors and self-efficacy on the relationship between family support and e-learning engagement in college students.

Effect of miRNA-19a on gastrointestinal motility in rats with functional dyspepsia.

The effect of microRNA (miRNA)-19a on gastrointestinal motility in rats with functional dyspepsia was investigated. Fifty adult Sprague-Dawley (SD) rats were randomly divided into 5 groups, 10 rats in each group, one group as the normal group, one group as the model group, and the other three groups were divided into negative control group, miRNA-19a mimic group and miRNA-19a inhibitor group. All rats were intraperitoneally injected with miRNA-19a scramble, miRNA-19a mimic and miRNA-19a inhibitor.

NOR1 expression and its relationship with prognosis in patients with hepatocellular carcinoma.

Purpose: This study aimed to investigate the expression of NOR1 in hepatocellular carcinoma (HCC) tissue and its relationship with prognosis.

Methods: A sample of 60 specimens including HCC and adjacent normal tissues were collected from postoperative HCC patients from February to September 2011. Immunohistochemistry was used to detect the positive expression of the oxidored-nitro domain containing protein 1 (NOR1), the postoperative disease-free survival (DFS) rate and then the overall survival (OS) was analyzed by the Kaplan-Meier method.

[Concentration and comparison studies of main heavy metals in adult blood in four cities].

Objective: To study the concentration difference and source of five kinds of heavy metals in the adult blood in four cities.

Method: Concentrations of five kinds of heavy metals in the healthy man blood were determined and compared by ICP-MS or AFS, which came from four different kinds of dietary cities, those are Taiyuan, Tianjin, Chengdu, Zhenjiang.

Results: Contents of blood Pb and Cd in Chengdu, Taiyuan were higher thanjian Jin, Zhenjiang, Taiyuan were higher than Zhenjiang in blood Cu and higher than other cities in blood Hg, however, contents of blood As in Zhenjiang were higher than other three cities.

G9a/GLP-dependent histone H3K9me2 patterning during human hematopoietic stem cell lineage commitment.

G9a and GLP are conserved protein methyltransferases that play key roles during mammalian development through mono- and dimethylation of histone H3 Lys 9 (H3K9me1/2), modifications associated with transcriptional repression. During embryogenesis, large H3K9me2 chromatin territories arise that have been proposed to reinforce lineage choice by affecting high-order chromatin structure. Here we report that in adult human hematopoietic stem and progenitor cells (HSPCs), H3K9me2 chromatin territories are absent in primitive cells and are formed de novo during lineage commitment.

Correlations of trace element levels in the diet, blood, urine, and feces in the Chinese male.

In order to explore the associations between trace elements in dietary intake and the other three biological media (blood, urine, or feces) and inter-element interactions among the latter, we simultaneously collected 72-h diet duplicates, whole blood, and 72-h urine and feces from 120 free-living healthy males in China. Correlations among the toxic (cadmium [Cd], lead [Pb]), and nutritionally essential (zinc [Zn], copper [Cu], iron [Fe], manganese [Mn], selenium [Se], iodine [I]) elements were evaluated using Spearman rank correlation analysis based on analytical data determined by inductively coupled plasma-mass spectrometry. Dietary Cd intakes were highly correlated with the fecal Cd and blood Cd levels.

[A case control study on the relationship between trace elements and human neural tube defects].

Objective: To explore the relationship between multi-trace elements levels in hair and human neural tube defects as well as other risk factors.

Methods: Using 88 paired cases and controls, an 1:1 matched case control study was carried out. The study subjects were collected from the China-U.