Long Noncoding RNA MHRT Protects Cardiomyocytes against H2O2-Induced Apoptosis

Acute myocardial infarction (AMI) remains a leading cause of morbidity and mortality worldwide. The exploration of new biomarkers with high sensitivity and specificity for early diagnosis of AMI therefore becomes one of the primary task. In the current study, we aim to detect whether there is any heart specific long noncoding RNA (lncRNA) releasing into the circulation during AMI, and explore its function in the neonatal rat cardiac myocytes injury induced by H2O2. Our results revealed that the cardiac-specific lncRNA MHRT (Myosin Heavy Chain Associated RNA Transcripts) was significantly elevated in the blood from AMI patients compared with the healthy control (*p<0.05). Using an in vitro neonatal rat cardiac myocytes injury model, we demonstrated that lncRNA MHRT was upregulated in the cardiac myocytes after treatment with hydrogen peroxide (H2O2) via real-time RT-PCR (qRT-PCR). Furthermore, we knockdowned the MHRT gene by siRNA to confirm its roles in the H2O2-induced cardiac cell apoptosis, and found that knockdown of MHRT led to significant more apoptotic cells than the non-target control (**p<0.01), indicating that the lncRNA MHRT is a protective factor for cardiomyocyte and the plasma concentration of MHRT may serve as a biomarker for myocardial infarction diagnosis in humans AMI.

The effect of pulmicort on pediatric chronic sinusitis / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#To investigate the effective method in treatment of pediatric chronic sinusitis.@*METHOD@#Two hundred and ten children were clinically diagnosed as chronic sinusitis and randomly divided into three groups as pulmicort, rhinocort and routine treatment group, respectively. All the patients in different group were systemic treated by corresponding method for two weeks.@*RESULT@#The effective rates were 84% for pulmicort treatment group, 61% for rhinocort treatment group and 48% for routine treatment group, so the effective rate for the patients treated with pulmicort were significantly higher than that with either rhinocort or routine treatment.@*CONCLUSION@#Pulmicort can be used to treat pediatric chronic sinusitis with higher effective rate.