AIM:To investigate the effects of γ-synuclein on autophagy and apoptosis of colon cancer cells in-duced by endoplasmic reticulum stress,as well as the protective effect on the cells.METHODS:Gene expression profile chip analysis was performed to compare the cDNA expression profiles between human colon cancer HCT116 cells with γ-synu-clein knockdown and HCT116 cells with control siRNA,and to identify potential molecules related to autophagy and apop-tosis.In colon cancer cell lines,the functional effects of γ-synuclein on autophagy and apoptosis induced by thapsigargin(TG),an endoplasmic reticulum stress-inducing agent,were systematically explored by conducting immunofluorescence staining,Western blot,CCK-8 assay,flow cytometry,and transmission electron microscopy.Western blot was used to de-tect the expression of γ-synuclein protein,autophagy-related proteins[microtubule-associated protein 1 light chain 3(LC3),beclin-1,autophagy-related protein 5(ATG5)and ATG7],and apoptosis-related proteins[poly(ADP-ribose)polymerase(PARP),pro-caspase-3,and pro-caspase-9].To further analyze the mechanism of γ-synuclein in regulating autophagy and apoptosis,extracellular signal-regulated kinase(ERK)inhibitor PD98059,ERK inhibitor SP600125 and c-Jun N-terminal kinase(JNK)activator anisomycin were applied separately to test HCT116 cells transfected with γ-synu-clein siRNA.Subsequently,autophagy proteins,apoptosis proteins,and ERK and JNK pathway-related proteins were de-tected by Western blot.RESULTS:The TG-induced autophagy of colon cancer cells mainly occurred at the early stage(0～24 h),and apoptosis mainly occurred at the late stage(36～48 h).Endoplasmic reticulum stress up-regulated the ex-pression of γ-synuclein in colon cancer cells,which was associated with enhanced autophagy.γ-Synuclein promoted au-tophagy by activating ERK and JNK pathways at the early stage(0～24 h),and inhibited apoptosis by blocking JNK path-ways at the late stage(24～48 h)to protect HCT116 cells.In our model,γ-synuclein was observed to play a critical role in the transition from endoplasmic reticulum stress-induced autophagy to apoptosis.CONCLUSION:In the context of endo-plasmic reticulum stress,γ-synuclein promotes autophagy and inhibits apoptosis by regulating ERK and JNK signaling pathways,thus protecting colon cancer cells.This provides a potential idea for anti-tumor therapy.

Objective:To analyze the accuracy of lung ultrasound and chest X-ray in the diagnosis of neonatal pulmonary disease.Methods:We prospectively collected newborns that needed chest X-ray examination to diagnose pulmonary disease from twelve neonatal intensive care units across the country between June 2019 and April 2020.Each newborn was examined by lung ultrasound within two hours after chest X-ray examination.All chest X-ray and lung ultrasound images were independently read by a radiologist and a sonographer.When there was a disagreement, a panel of two experienced physicians made a final diagnosis based on the clinical history, chest X-ray and lung ultrasound images.Results:A total of 1 100 newborns were enrolled in our study.The diagnostic agreement between chest X-ray and lung ultrasound(Cohen′s kappa coefficient=0.347) was fair.Lung ultrasound(area under the curve=0.778; 95% CI 0.753-0.803) performed significantly better than chest X-ray(area under the curve=0.513; 95% CI 0.483-0.543) in the diagnosis of transient tachypnea of the newborn( P<0.001). The accuracy of lung ultrasound in diagnosing neonatal respiratory distress syndrome, meconium aspiration syndrome, pneumonia and neonatal pulmonary atelectasis was similar to that of chest X-ray. Conclusion:Lung ultrasound, as a low-cost, simple and radiation-free auxiliary examination method, has a diagnostic accuracy close to or even better than that of chest X-ray, which may replace chest X-ray in the diagnosis of some neonatal lung diseases.It should be noted that both chest X-ray and lung ultrasound can only be used as auxiliary means for the diagnosis of lung diseases, and it is necessary to combine imaging with the clinical history and presentation.

Objective:To compare the quality of Astragali Radix at different harvest time; To revise the content determination indexes of Astragali Radix in Chinese Pharmacopoeia. Methods:An Agilent Eclipse XDB-C18 column (4.6 mm × 150 mm, 5 μm) was used for the determination of saponins with acetonitrile-water solution as mobile phase in a gradient mode. The drift tube temperature of ELSD was 60 ℃; the pressure was 30 psi; the gain was 800 ℃; the flow rate was 1.0 ml/min; the column temperature was 30 ℃; the injection volume was 20 μl; the acetonitrile-0.2% formic acid solution was used as mobile phase for the determination of flavonoids in a gradient mode; the flow rate was 1.0 ml/min; the detection wavelength was 260 nm; the column temperature was 30 ℃; the 10 μl was injected. The limited range as an indicator for determining Astragali Radix content was determined by investigating the extraction method and extraction time of Astragaloside Ⅰ and detecting the content of Astragaloside Ⅰ in 12 batches of Astragali Radix from different origins. The moisture, total ash, and water-soluble extracts in Astragali Radix were determined according to the drying method, total ash determination method, and cold soaking method in the four parts of Chinese Pharmacopoeia (2020 edition), respectively. Results:The content of total saponins in Astragali Radix harvested in spring and autumn in different origins was not significantly different, but the content of total flavonoids was significantly different. Except for H11, the content of Astragaloside Ⅰ in the other batches of Astragali Radix was ≥ 0.05%, so the content limit of Astragaloside Ⅰ was proposed to be≥0.05%. The results of moisture, total ash and water-soluble extracts in the 12 batches of Astragali Radix all meet the requirements in the Chinese Pharmacopoeia. Conclusions:Astragali Radix harvested in autumn is with higher content of active components and better quality. At the same time, this study can provide a reference that the new version of Chinese Pharmacopoeia can revise the Astragaloside Ⅳ in the content determination index of Astragali Radix to Astragaloside Ⅰ .

Mice ; Animals ; Myocytes, Cardiac ; MicroRNAs/genetics* ; RNA, Long Noncoding/genetics* ; Cardiomegaly/genetics* ; Signal Transduction ; Cells, Cultured

Objective:To describe the long-term characteristics and trend changes in the incidence and mortality of female breast cancer in Shanghai from 1 973 to 2017,aiming to provide references for exploring the etiology of breast cancer and formulating strategies and measures for prevention,intervention and control. Methods:Joinpoint software was used to analyze the trend changes in the incidence and mortality of female breast cancer in Shanghai from 1 973 to 2017,and an age-period-cohort model was constructed to explore the effects of age,year of diagnosis,and birth cohort on long-term trend changes. Results:From 1 973 to 2017,there were 68 192 new cases of female breast cancer in Shanghai,with a diagnosed rate of 31.72/100 000.The incidence rate continued to rise,and the risk of the disease continued to rise from the age of 20 years,and the rise rate accelerated significantly after the age of 40 years.There were 21 535 female breast cancer deaths from 1 973 to 2017.The mortality rate was stable,with a death rate of 8.62/100 000,and the risk of death increased significantly from the age of 45 years.The effects of age,period and cohort had a significant impact on the incidence of breast cancer(P＜0.01),while the increase in mortality rate was related to age and cohort effects(P＜0.01). Conclusion:The incidence rate of female breast cancer in Shanghai is still rising rapidly,and the mortality trend is generally stable,suggesting that the treatment is effective and the quality of life is improved.However,breast cancer is still the main malignant tumor among females in Shanghai.It should be continued to implement prevention and control strategies such as lifestyle intervention and screening of high-risk individuals to further strengthen the prevention and control of breast cancer.

Objective:To describe the epidemiological features and temporal trends of colorectal cancer in urban Shanghai from 1973 to 2017. Methods:Data on colorectal cancer in urban Shanghai was obtained through Shanghai Cancer Registry and Vital Statistics System.Joinpoint analysis was used to describe the temporal trends and annual percent change(APC)and age-period-cohort analysis was used to estimate the association between age,period and birth cohort and colorectal cancer. Results:A total of 105 847 cases and 60 447 deaths of colorectal cancer were diagnosed in urban Shanghai over the 45-year study period.Both the number of new cases and the number of deaths showed an increasing trend.In the same period,the age-standardized incidence of colorectal cancer in urban areas of Shanghai increased significantly from 14.1/100 000 in 1973 to 27.7/100 000 in 2017,while the age-standardized mortality rate increased from 8.2/100 000 to 10.7/100 000.The overall average annual age-standardized incidence and mortality rates were 20.4/100 000 and 11.0/100 000,respectively.With the increase of age,the age-standardized morbidity and mortality of colorectal cancer showed an obvious upward trend.Taking 1993-1997 as reference,the risk of colorectal cancer in Shanghai reached the highest in 2013-2017,and the corresponding relative risk was 1.2(95％confidence interval:1.2-1.3),while the lowest was 0.9(95％confidence interval:0.8-1.0)during 1973-1977.Mortality risk,on the contrary,decreased with the increase of time.Before 1953-1957,the risk of colorectal cancer in urban Shanghai increased with the increase of birth cohort time,and then showed a downward trend.There was a corresponding decline in the risk of colorectal cancer death among people born after 1957. Conclusion:The incidence and mortality of colorectal cancer in Shanghai showed an increasing trend from 1973 to 2017,but the prevalence trend of colorectal cancer is still different among different populations.

Objective To establish a quality control method for bomeol and artificial musk in Xinfufang-Zhenzhusan and Xinfufang-Zhenzhugao.Methods We used petroleum ether-toluene-ethyl acetate (9:3:2)as developer for TLC to identify isoborneol and borneol and petroleum ether-dichloromethane (2:3) as developer for TLC to identificate musk ketone.Agilent 7890 B gas chromatograph,FDI detector;Column:Thermo-TG-WaxMS GC (0.25 mm × 30 m,0.25 mm) was employed;the carrier gas was high purity nitrogen and flow rate for 1 mg/ml,the injection port temperature is 200 C and detector temperature is 250 ℃;the split ratio is 10:1 and injection volume was 1 μl,using temperature programmed.Results The isoborneol,borneol and musk ketone in the range of 0.001-10 mg/ml showed good linearity.The recovery of the method is in the range of 95 ％ to 105 ％.The TLC for isobomeol,bomeol,musk ketone can be identified easily.Conclusions The method was simple and reasonable,which can be used for the quality control of borneol and artificial musk in the Xinfufang-Zhenzhusan and Xinfufang-Zhenzhugao.

Diagnosis, Differential ; Humans ; Meniere Disease ; diagnosis ; therapy ; Vertigo ; diagnosis ; therapy