Objective To investigate the effect of human telomerase reverse transcriptase C27 polypeptide (hTERTC27) over-expression on orthotopic implanted tumor growth which induced by nasopharyngeal carcinoma cells C666-1 in vivo.Methods Stably transfected C666-1 cell lines were used to establish subcutaneously transplanted tumor mouse model.The tumor growth was observed and the tumor growth curve was made by measuring the volumes of tumors every day.HE staining was used to observe the change of histomorphology.The expressions of cleaved Caspase-3,Caspase-9,PARP,bax and bcl-2 were detected by Western blot analysis.Results The in vivo mouse model showed that over-expression of hTERTC27 significantly reduced tumor volume and tumor weight (P ＜ 0.05),and decreased the local muscle infiltration.Over-expression of hTERTC27 significantly up-regulated the expressions of cleaved Caspase-3,Caspase-9,PARP and bax (P ＜ 0.01),and down-regulated the expression of bcl-2 (P ＜ 0.01).Conclusion The results indicate that over-expression of hTERTC27 can obviously inhibit the growth of transplanted tumor in nude mice,which is possibly related to the regulation of bax and bcl-2 expression.

Objective To investigate the relationship between insomnia,gastrointestinal symptoms,and glycosylated hemoglobin(HbA1c)levels in individuals diagnosed with type 2 diabetes mellitus(T2DM),as well as the related influencing factors.Methods A total of 910 T2DM patients treated in our multicenter from January 2022 to December 2022 were enrolled in this study.General information(gender,age,smoking and drinking history,exercise,course of disease,treatment and complications),HbA1c,Athens Insomnia Scale(AIS)scores and Gastrointestinal Symptoms Rating Scale(GSRS)scores of patients were collected.The differences of sleep and gastrointestinal symptoms between groups were analyzed,and the correlation between the differences and HbA1c was analyzed.Furthermore,the risk factors for non-standard HbA1c were analyzed.Results The AIS score and GSRS score in the HbA1c control group were less than those in the non-standard group(P＜0.01).Insomnia was reported by 37.0％of T2DM patients,and the HbA1c level in the insomnia group was significantly higher than that in the non-insomnia group(10.00％±2.38％vs.8.26％±1.73％,P＜0.01).Gastrointestinal symptoms were present in 57.5％of T2DM patients,and the HbA1c levels in the group with gastrointestinal symptoms were significantly higher than those in the group without gastrointestinal symptoms(9.26％±2.23％vs.8.43％±1.98％,P＜0.01).Furthermore,26.3％of T2DM patients experienced both insomnia and gastrointestinal symptoms.Remarkably,the HbA1c levels in the group with both insomnia and gastrointestinal symptoms were significantly higher than those in the group without either condition(10.18％±2.44％vs.8.45％±1.86％,P＜0.01).Correlation analysis demonstrated a significant association between sleep quality,gastrointestinal function,and HbA1c levels(P＜0.01).The logistic regression analysis result revealed that age,GSRS score,AIS score,and the presence of insomnia combined with gastrointestinal symptoms were independent risk factors for predicting HbA1c≥6.5％(P＜0.01).Having both insomnia and gastrointestinal symptoms concurrently was the strongest risk factor for substandard HbA1c control,and the risk of blood sugar control may increase about 5 times when both appear together.Conclusion Insomnia and gastrointestinal symptoms are common comorbidities in T2DM patients,showing a cross-interfering relationship,and they appear together with poor blood sugar control,interact causally,and amplify each other.