High-frequency ultrasonography for diagnosis and differential diagnosis of acute scrotum in children / 中华男科学杂志

<p><b>Objective</b>To analyze the high-frequency ultrasound image features of acute scrotum in children and explore the value of high-frequency ultrasonography in the diagnosis and differential diagnosis of the disease.</p><p><b>METHODS</b>This retrospective study included 256 children aged 2 days to 14 years undergoing color Doppler ultrasonography at 2 hours to 3 days after onset of acute scrotum. We analyzed the morphology, internal echo and blood supply of the testis in comparison with the clinical and pathological results.</p><p><b>RESULTS</b>Among the 256 cases, acute testicular torsion was found in 23, of which 16 were treated by complete resection the necrotic testis and the other 7 by surgical reduction of testicular torsion. Ultrasonographically, the involved testes presented different degrees of increase or decrease in volume, with uneven internal echoes, irregular hypoechoic flakes, and testicular hydrocele. Color Doppler flow imaging (CDFI) showed significant blood flow signals around the diseased testes but none within them. Acute testicular appendix torsion was found in 116 cases, in which ultrasonography manifested nodules with round or oval abnormal echoes between the upper pole of the testis and caput epididymidis, first hypoechoic and then gradually increased, heterogeneous internally. CDFI revealed enlarged epididymides and enriched testicular blood flow but no blood flow signals in the nodules. The 103 cases of acute epididymitis were ultrasonographically characterized by varied degrees of swelling of the involved epididymis with uneven internal echoes and rich blood flow signals on CDFI. Six of the cases were diagnosed as acute orchitis, with the ultrasonographic features of testicular swelling and low but uniform internal echoes, with rich blood flow signals on CDFI. Incarcerated inguinal hernia was confirmed in 15 cases, in which ultrasonography revealed intrusion of the hernia into the obviously enlarged scrotal sac with the mesentery and intestine in it, and blood flow visible on CDFI. Acute scrotal wall hematoma and edema was found in 8 cases, with the ultrasonographic characteristics of scrotal wall thickening, with visible blood flow signals on CDFI.</p><p><b>CONCLUSIONS</b>High-frequency ultrasonography has a high sensitivity and specificity for acute scrotum in children, which can be applied as the first-choice clinical imaging modality and provide reliable evidence for the diagnosis and differential diagnosis of the disease.</p>

Effect of Evn-50 on cell growth and apoptosis in tamoxifen-resistance human breast cancer cell line MCF-7/TAM-R / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To investigate the effect of Evn-50 extracted from Vitex negundo on human breast cancer cell line MCF-7 and MCF-7/TAM-R cells in vitro.</p><p><b>METHODS</b>MCF-7 and tamoxifen-resistant MCF-7/TAM-R cells were treated with Evn-50,tamoxifen or combination of Evn-50 and tamoxifen. Cell proliferation inhibition rates were determined by MTT assay. The apoptosis rate and the change of cell cycle were detected by PI staining flow cytometry. Protein expression of phospho-MAPK 44/42 (Thr202/Tyr204),MAPK P44/42, phospho-AKT (Ser473) and AKT were detected with Western blotting.</p><p><b>RESULTS</b>The viability of MCF-7 cells was decreased in combination group [(28.65 ±11.43)%] and Evn-50 group [(53.02 ±15.14)%] compared with TAM group (P<0.01). The cell viability of MCF-7/TAM-R in combination group [(42.11 ±14.30)%] was significantly lower than that in TAM group [(92.18 ±13.16)%] (P<0.01). The cell apoptosis rate was dependent on the time of treatment in all groups,the effects on apoptosis and G2/M phase cells were most prominent at 72 h (P<0.01). Western blotting revealed that protein levels of phosphorylated AKT and p-MAPK44/42 decreased,while the expression of total AKT and MAPK44/42 was stable. In MCF-7/TAM-R cells,the expression of phosphorylation of AKT and MAPK44/42 protein was not changed in Evn-50 or TAM alone group,but significantly inhibited in the combination group at 72 h.</p><p><b>CONCLUSION</b>Evn-50 can inhibit cell growth and induce apoptosis in MCF-7 and MCF-7/TAM-R cells,it can reverse tamoxifen-resistance of MCF-7/TAM-R cells.The mechanisms may be related to the down-regulation of phosphorylated ERK1/2 in MAPK signal pathway and phosphorylated AKT in AKT signal pathway.</p>

A case-control study on risk factors of female breast cancer in Zhejiang province / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To investigate the risk factors on female breast cancer in Zhejiang province.</p><p><b>METHODS</b>A case-control study was conducted in 200 cases of female breast cancer with histopathological diagnosis and 200 matched controls from Zhejiang province.</p><p><b>RESULTS</b>Univariate conditional logistic regression showed that family history of malignant tumor and breast cancer, housing decoration in last 10 years, mammary hyperplasia, adverse life events, bra with steel rings, sleeping with bra, high fat and pickle intake, poor sleep were positively related to breast cancer; whereas environmental friendly decoration materials, long decoration time interval, workplace condition, more lactation and parity, high fruits intake, sufficient sleep were negatively related to breast cancer. Multivariate conditional logistic regression analysis showed that the risk factors included family history of other tumors [odds ratio (OR)= 1.571,95% confidence interval(CI):1.029-2.396],mammary hyperplasia (OR=3.066,95%CI:1.834-5.126), job-related life events (OR=4.575,95%CI:1.690-12.390),the death of a loved one (OR=2.555,95%CI:1.475-4.424), wearing bra at night (OR=1.902,95%CI:1.177-3.072),high fat intake (OR=2.709,95%CI:1.546-4.749) and salted food (OR=2.460,95%CI:1.300-4.653). Factors as environmental friendly decoration materials (OR=0.517,95%CI:0.339-0.789),workplaces condition (OR=0.430,95%CI:0.243-0.762),more lactation (OR=0.109,95%CI:0.013-0.896),enough sleep (OR=0.424,95%CI:0.205-0.880) were protective factors.</p><p><b>CONCLUSION</b>Hereditary,psychological factors,lifestyle,environment and diet related factors are significantly associated with risk of breast cancer.</p>