Abstract To clarify the service targets, service contents, and safeguard mechanisms of the basic public service program for student vision health management, the study grounded in the current status of child and adolescent myopia prevention and control in China and integrated with the practical experience and innovative practices of Wuhan National Demonstration Area for Student Vision Health Management, takes education as the main thread and schools as the base, consolidating resources from multiple stakeholders including education administrative departments, schools, families, and professional technical service institutions. Centering on four core components—vision health education, monitoring and record keeping, risk prevention and control, and dynamic management, the study constructs a multi tiered basic public service system for vision health management of primary and secondary school students. It further proposes the use of an intelligent management platform and a "three tier color coded early warning" mechanism (red, yellow, blue) to prevent and control student myopia at the source, providing schools with replicable and operable implementation pathways to enhance the level of student vision health management.

Objective To retrospectively analyze the clinical characteristics of patients with malignant tumors combined with new coronavirus pneumonia (COVID-19), and to provide a scientific basis for clinical treatment. Methods SPSS 20.0 was used for data analysis. The t-test was used for quantitative data, and chi-square test/Fisher-exact test was used for qualitative data. Binary logistic regression was used for multivariate analysis, and the correlation coefficient was used for multicollinearity test before regression analysis. Results A total of 61 COVID-19 infected cancer patients were included in this study. Their average age was 62.2±12.12. The most common admission symptoms were fever (54.1%), fatigue (39.3%), and cough (37.7%). The rate of the patients with severe COVID-19 was 54.1%. Having 3 or more complications (OR: 2.07, 95%CI: 3.14-2698.12), fever (OR: 12.22, 95%CI: 1.20-86.70), low percentage of lymphocytes (OR: 15.56, 95%CI: 1.78-136.24) and low serum albumin level (OR: 254.64, 95%CI: 8.56-7576.41) were risk factors for COVID-19 severity. The fatality rate of the subjects was 8.2%, and the average hospital stay was 26.7±19.69 days. Furthermore, the severity of COVID-19 had a statistically significant impact on the average hospital stay (t=-3.48, P<0.01). Conclusion Patients with malignant tumors combined with COVID-19 have a higher severity rate, fatality rate, and average hospital stay than ordinary COVID-19 patients. Underlying diseases, fever, low lymphocyte percentage, and low serum albumin levels are the factors for the increase of the illness severity in patients with malignant tumors combined with COVID-19.

OBJECTIVETo investigate the mechanism of miR-133a in reversing neonatal rat cardiomyocyte hypertrophy induced by phenylephrine.

METHODSA miR-133a precursor cDNA was used to construct an adenovirus vector, which was transfected into 293 cells to harvest miR-133a-containing virus. Neonatal rat cardiac myocytes treated by phenylephrine were exposed to miR-133a adenovirus, and the changes in cell area was measured; the expression levels of miR-133a and Acta1, Actc1, Actb, Myh6, Myh7, and BNP mRNAs were detected by quantitative RT-PCR.

RESULTSPhenylephrine treatment increased the area of cardiomyocytes by more than 3 folds and significantly enhanced the expression levels of Acta1, Actc1, Actb, Myh6, Myh7 and BNP mRNAs. All these changes were obviously reverse by miR-133a treatment.

CONCLUSIONmiR-133a is an important regulator of phenylephrine-induced cardiomyocyte hypertrophy and negatively regulates this process.

Adenoviridae ; Animals ; Cells, Cultured ; Genetic Vectors ; Hypertrophy ; MicroRNAs ; genetics ; Myocytes, Cardiac ; cytology ; pathology ; Phenylephrine ; adverse effects ; RNA, Messenger ; Rats ; Transfection

Objective To investigate the mechanism of miR-133a in reversing neonatal rat cardiomyocyte hypertrophy induced by phenylephrine. Methods A miR-133a precursor cDNA was used to construct an adenovirus vector, which was transfected into 293 cells to harvest miR-133a-containing virus. Neonatal rat cardiac myocytes treated by phenylephrine were exposed to miR-133a adenovirus, and the changes in cell area was measured; the expression levels of miR-133a and Acta1, Actc1, Actb, Myh6, Myh7, and BNP mRNAs were detected by quantitative RT-PCR. Results Phenylephrine treatment increased the area of cardiomyocytes by more than 3 folds and significantly enhanced the expression levels of Acta1, Actc1, Actb, Myh6, Myh7 and BNP mRNAs. All these changes were obviously reverse by miR-133a treatment. Conclusion miR-133a is an important regulator of phenylephrine-induced cardiomyocyte hypertrophy and negatively regulates this process

Objective To investigate the mechanism of miR-133a in reversing neonatal rat cardiomyocyte hypertrophy induced by phenylephrine. Methods A miR-133a precursor cDNA was used to construct an adenovirus vector, which was transfected into 293 cells to harvest miR-133a-containing virus. Neonatal rat cardiac myocytes treated by phenylephrine were exposed to miR-133a adenovirus, and the changes in cell area was measured; the expression levels of miR-133a and Acta1, Actc1, Actb, Myh6, Myh7, and BNP mRNAs were detected by quantitative RT-PCR. Results Phenylephrine treatment increased the area of cardiomyocytes by more than 3 folds and significantly enhanced the expression levels of Acta1, Actc1, Actb, Myh6, Myh7 and BNP mRNAs. All these changes were obviously reverse by miR-133a treatment. Conclusion miR-133a is an important regulator of phenylephrine-induced cardiomyocyte hypertrophy and negatively regulates this process