ABSTRACT
AIM:To explore the expression level of microRNA-140 ( miR-140 ) in human gastric cancer and normal gastric tissues, and the regulatory effect of miR-140 expression on the function of SGC-7901 cells.METHODS:The expression levels of miR-140 in human gastric cancer and normal gastric tissues were detected by real-time PCR.miR-140 mimics ( miR-140 up-regulated expression) and miR-140 inhibitors ( miR-140 down-regulated expression) were trans-fected into human gastric cancer SGC-7901 cells by liposome method.At the same time, the untransfected control group ( control group) and miRNA nonsense sequence transfection group ( NC group) were set up .The expression of miR-140 in the cells after transfection was detected by real-time PCR.The cell viability and growth inhibition rate with DDP were meas-ured by MTT assay.The cell cycle and apoptotic rate of SGC-7901 cells were analyzed by flow cytometry.The invasion a-bility of SGC-7901 cells was measured by Transwell assay.The protein expression of histone deacetylase 4(HDAC4) in the cells was determined by Western blot.RESULTS:The expression level of miR-140 in human gastric cancer tissues was significantly lower than that in normal gastric tissues (P<0.05).Compared with control group and NC group, the viability and invasion ability of the SGC-7901 cells were decreased, the cell cycle was arrested, the cell growth inhibition rate and apoptotic rate with DDP treatment were increased, and the protein expression of HDAC4 was down-regulated ( P<0.05) in miR-140 mimics group.However, in miR-140 inhibitors group, the viability and invasion ability of the SGC-7901 cells were increased, the cell cycle was promoted, the cell growth inhibition rate and apoptotic rate with DDP treatment were de-creased, and the protein expression of HDAC4 was up-regulated ( P<0.05 ) .CONCLUSION:The expression level of miR-140 in the gastric cancer tissues is low.miR-140 serves as a tumor suppressor to regulate the viability, apoptosis and invasion ability of gastric cancer cells, and to play a role by down-regulating HDAC4 protein.miR-140 may serve as a new target for diagnosis and treatment of gastric cancer.
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Objective To explore the quantitative expression of estrogen receptor(ER),progesterone receptor(PR)in breast hyperplasia and its Clinical significance.Methods The expression of ER and PR was examined by immunohistochemical S-P method and quantitative analysis technique in 20 cases a piece of epithelial hyperplasia of usual type,atypical hyperplasia(mild,moderate,severe)and intraductal carcinoma,which contrasted with 20 cases of usual breast.Results The difference of the expression of ER and PR between usual breast or epithelial hyperplasia of usual type and atypical hyperplasia or intraductal carcinoma was significant(P50%,there was significant difference between moderate dysplasia and mild dysplasia,but no significant difference between moderate dysplasia and severe dysplasia,intraductal carcinoma.Conclusions The abnormal expression of ER and PR may be an early event in the progression of breast carcinoma,it could be used for early diagnosis of breast premalignancy and as a effective mark to monitor the prognosis.
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the relationship between blood pressure variability, overweight or obesity in patients with essential hypertensive.</p><p><b>METHODS</b>A hundred ninety-one patients with essential hypertension were divided into three groups: normal, overweight and obese according to body mass index (BMI). The characteristics of the variability of 24-hour ambulatory blood pressure monitoring (ABPM) in three groups were compared.</p><p><b>RESULTS</b>Blood pressure overload and variability increased parallel with the increase of BMI. In overweight group, the variabilities of systolic blood pressure at night (nSBPSD) increased 14.10%, the variabilities of diastolic blood pressure at night (nDBPSD) increased 13.15% and the variabilities of mean arterial pressure at night (nMAPSD) increased 15.92% respectively. In the obese group, the above three variabilities increased more significantly (compared to normal group P < 0.05-0.01). However, increases of the three blood pressure variabilities were observed only in the male patients.</p><p><b>CONCLUSIONS</b>The overweight or obesity increased the blood pressure overload and variabilities in patients with essential hypertension. The increases of blood pressure variabilities were observed only in male patients and at night.</p>