DNA ; DNA Fingerprinting ; Homicide ; Humans

Objective To explore the in vivo killing effects of nanosecond pulsed electric fields on mouse breast cancer in tumor bearing BALB/c mice. Methods Twenty four BALB/c mice models with subcutaneous EMT-6 breast cancer were prepared and divided into experimental group and control group (n=12). In experimental group, the mice were treated by the pulsed electric fields with peak voltage of 700 V/cm, rise times of 57 ns, durations of 70μs and duty ratio of 50%on the tumor tissue with two parallel electrodes under anaesthesia. One hundred pulses were given and the energy was just 9.75 J with effective action period of 7 ms. Tumor volume, animal weight and histopathologic changes after 1, 3, 5 and 7 d were observed after irreversible electroporation. Results The tumor volume in experimental group increased more slowly than that in control group, especially at the 1-3 d after treatment with a standstill. Histopathological examination results showed that the tumor tissue had obvious coagulation necrosis and tissue edema after electrical stimulation treatment, and mass vacuole like structure appeared in tumor tissue from the third day after treatment and vascular injury occurred at the early stage. Conclusions In the given field conditions, steep pulsed electric field has inhibitory effect on tumor growth. In order to achieve more ideal tumor therapy effect, further studies on steep pulse dose are needed.

Adult ; Benzene ; poisoning ; China ; Cross-Sectional Studies ; Female ; Humans ; Male ; Middle Aged ; Occupational Exposure ; adverse effects ; statistics & numerical data ; Young Adult

Objective To study the effectiveness of subfascial endoscopic communicating branch vein ablation in treating communi cating branch vein insufficiency.Methods Fifty-seven cases of primary lower ext remity vein valve insufficiency complicated by communicating vein insufficiency diagnosed by venography and color duplex were treated with subfascial endoscopic communicating branch vein ablation, and their information was analyzed retrosp ectively.Results Swelling was observed in leg of 7 cases after operation, and disappeared within one week spontaneously. Incision infec tion occurred in 2 cases and skin ambustion happened in 2 cases. Superficial vei n varicosis disappeared in all case, skin pigmentatin declined significantly and ulcers healed in 2-3 weeks.Conclusion Subfascial endoscopic communicating branch vein ablation is an excellent choice in treating communicating branch ve in insufficiency.

OBJECTIVETo investigate the differences in the expressions of E-cadherin and N-cadherin between high-risk prostate cancer and low- and medium-risk prostate cancer, and analyze their correlation with the age, serum PSA level, and Gleason score of the patients.

METHODSWe retrospectively analyzed the clinical data of 42 cases of prostate cancer, which were divided into a low- and medium-risk group (group A, n = 15) and a high-risk group (group B, n = 27). We measured the expressions of E-cadherin and N-cadherin by immunohistochemical staining, compared their differences between the two groups, and analyzed their correlation with the age, serum PSA level, and Gleason score of the patients.

RESULTSImmunohistochemical staining showed that the expression of E-cadherin was significantly higher in group A than in B (6.1 +/- 0.51 vs 4.2 +/- 0.37, P < 0.01), and so was its positive rate (73.3% vs 25.9%, P < 0.05). The positive rate of E-cadherin was also markedly higher in the patients with serum PSA < 20 microg/L than in those with serum PSA > or = 20 microg/L (66.7% vs 29.6%, P < 0.05), and so was it in the patients with the Gleason score 5-7 than in those with 8-10 (60.9% vs 21.1%, P < 0.05). On the contrary, the N-cadherin expression was significantly lower in group A than in B (3.7 +/- 0.32 vs 7.5 +/- 0.58, P < 0.01), and so was its positive rate (13.3% vs 59.3%, P < 0.01). The positive rate of N-cadherin was also remarkably lower in the patients with the Gleason score 5-7 than in those with 8-10 (26.1% vs 63.2%, P < 0.05). However, there were no statistically significant differences in the N-cadherin expression between the patients with serum PSA < 20 microg/L and those with serum PSA > or = 20 microg/L (P > 0.05), nor in the expressions of E-cadherin and N-cadherin between the patients aged > or = 70 years and those aged < 70 years (P > 0.05).

CONCLUSIONThe expressions of E-cadherin and N-cadherin are significantly different between high-risk prostate cancer and low- and medium-risk prostate cancer, which suggests that both may correlate with the invasion and metastasis of prostate cancer as well as with the serum PSA level and Gleason score of the patients.

Age Factors ; Aged ; Aged, 80 and over ; Antigens, CD ; metabolism ; Cadherins ; metabolism ; Epithelial-Mesenchymal Transition ; Humans ; Male ; Middle Aged ; Prostate-Specific Antigen ; blood ; Prostatic Neoplasms ; metabolism ; pathology ; Retrospective Studies

OBJECTIVETo evaluate the safety and clinical outcomes of the novel simplified no-flip surgical approach to Shang Ring male circumcision in adults.

METHODSA total of 528 adult males, aged 18 - 58 (mean 35) years, 63 with phimosis and 465 with redundant prepuce, underwent no-flip Shang Ring circumcision with or without removal of the outer ring. The operation time and intraoperative blood loss were recorded and observations were made on such complications as postoperative bleeding, infection, edema, and wound dehiscence.

RESULTSThe operation time, intraoperative blood loss, and 2-hour postoperative pain score were (3.8 +/- 0.3) min, (0.6 +/- 0.1) ml, and 7.3 +/-0.3, respectively. Spontaneous ring detachment occurred at 21.6 +/- 2.1 days postoperatively in 12.7% of the patients (67/528) who had chosen not to remove the rings. Of those who preferred removal of the outer ring (87.3% [461/528]), none experienced any pain at the ring removal 7 days after the operation. Postoperative complications included infection in 3 cases (0.56%) and mild edema in 9 (1.70%), but no bleeding and wound dehiscence. Totally, 518 (98.1%) of the patients felt satisfied with the postoperative penile appearance.

CONCLUSIONNo-flip Shang Ring circumcision, with no need for removal of the inner ring, is a safe and simple approach for adult males, which is superior to conventional Shang Ring circumcision for requirement of fewer surgical instruments, shorter operation time, lower incidence of complications, and better satisfaction with the penile appearance. However, these advantages are to be further demonstrated by more randomized controlled trials.

Adolescent ; Adult ; Circumcision, Male ; instrumentation ; methods ; Humans ; Male ; Middle Aged ; Phimosis ; surgery ; Postoperative Complications ; Young Adult

OBJECTIVETo evaluate the diagnostic value of micro-movement sensitive mattress sleep monitoring system (MSMSMS) in children with obstructive sleep apnea hypopnea syndrome.

METHODSSixty-five children with the complaint of sleep disorder were collected and detected by polysomnography and micro-sensitive mattress sleep monitoring system overnight at least seven hours. The date from two instruments were analyzed by computer automatically and then modified by two professional staff double-blind separately. The data about the diagnosis of sleep breath disorder and other sleep physiology information were compared between the two groups.

RESULTSSixty-one cases finished the study finally. The mean age of these children was (7.0 ± 2.7) and the youngest was 3 years old, maximum was 13 years old, male children 46 cases, female patients 15 cases, body mass index (BMI) median [25 quantile; 75 quantile] 16.00 [14.80;17.5]kg/m2. Mean PSG measured apnea hypopnea index (AHI) was 4.50 [2.30;10.15] times/h, and mean MSMSMS AHI was 3.63 [2.56; 6.43] times/h. There was a significant correlation between PSG AHI and AHI by MSMSMS (r = 0.935, P < 0.01). A Bland-Altamplot of PSG AHI and MSMSMS AHI was also used to assess the accuracy of MSMSMS. 95. 1% of the data was fallen in the 95% consistency areas. For AHI--5 times/h and nighttime minimum oxygen < 91% or obstructive apnea index( OAT) > 1 time/h and nighttime minimum oxygen saturation < 91 % as threshold value, the MSMSMS diagnosing sensitivity and specificity were 82.9% and 92.3%. The misdiagnosis rate and missed diagnosis rate were 7.7% and 17.1%.

CONCLUSIONSThe MSMSMS offer a simple and comfortable method to monitor children's sleep. It improves the compliance in the process of sleep monitoring. Besides, as a diagnostic tool in the diagnosis of OSAHS on children has a high credibility in AHI.

Adolescent ; Body Fluids ; Child ; Child, Preschool ; Diagnostic Errors ; Double-Blind Method ; Female ; Humans ; Male ; Oxygen ; Polysomnography ; methods ; Seasons ; Sensitivity and Specificity ; Sleep Apnea, Obstructive ; diagnosis

Objective To observe the effect of balance training on cerebral cortex and balance function of mouse.Methods Forty-five C57BL/6J female mice were randomly divided into the control group, two-week training group and four-week training group with 15 animals in each group. An new model of balance function training was copied. The balance function, brain index, and the content of malondialdehyde (MDA) and activity of superoxide dismutase (SOD) in the mouse cerebral cortex were tested after training.Results The total time passing balance beam of the four-week training group significantly shorten compared with the control group and two-week training group ( P<0.01). Compared with the control group, the brain index of two-week training group increased ( P<0.05), and four-week training group also increased significantly ( P<0.01). Compared with the control group, the SOD activity of cerebral cortex significantly increased (P<0.01), and MDA decreased ( P<0.05) in the four-week training group.Conclusion This new balance training can improve balance function, increase the brain index and decrease lipid peroxidation level in the cerebral cortex of the mice.

Objective To evaluate the performance of emergency test and the applicability under complex field conditions of biochemical modules of field point-of-care test ( POCT ) system ( type A ) .Methods The precision and anti-interference ability of albumin ( ALB ) , total bilirubin ( TBIL ) , alanine transaminase ( ALT ) , aspartate transaminase (AST),blood area nitrogen(BUN),creatinine(CREA),uric acid(UA),lactate dohydrogenase(LDH),creatine kinase ( CK) ,and glucose( GLU) detected by field POCT system( A) were analyzed according to standards formulated by National Committee for Clinical Laboratory Standards(NCCLS).Field POCT system(A) and Coulter Beckman AU2700 automatic biochemical analyzer were used to detect the serum of 22 clinical cases respectively.After simulating the field environment by adjusting the temperature and humidity, we compared the results of mixed serum under different environment conditions. Results The coefficients of variation in total precision of ALB,TBIL,ALT,AST,BUN,CREA,UA,LDH,CK,and GLU detected by field POCT system(A) were 3.34%,6.54%,6.01%,4.80%,3.95%,5.59%,3.33%,6.19%,7.40%,and 4.56%(LevelⅠ);and 3.08%,4.47%,4.02%,4.31%,3.76%,4.22%,2.93%,5.25%,6.39%,and 4.35%(LevelⅡ) respectively.When triglycerides( TG) level was at 21 mmol/L, the interference rate was below 10%.When bilirubin level was at 120 μmol/L, the interference rate of ALT,AST and CREA was -33.33%,-22.99%,20.00%(LevelⅠ), and -22.13%,-14.55%,and 8.70%(LevelⅡ),respectively.When its level was at 240 μmol/L, the interference rate of UA was -16.67%and -24.69%, respectively at two levels;if hemoglobin( Hb) was at 170 mg/dl, the interference rate of TBIL and LDH was 20.00%,and 99.26%(LevelⅠ),and 15.38%,and 40.79%(LevelⅡ),respectively;if it was at 340 mg/dl, the interference rate of ALT and AST was 9.84% and 13.79%(LevelⅠ), and 12.30%,and 12.27%(LevelⅡ),respectively;if it was at 510 mg/dl, the interference rate of CREA,UA and Ck in LevelⅠwas 26.67%, 16.67%,and 11.74%.The R2 of linear regression between field POCT system( A) and AU2700 automatic biochemical analyzer were 0.961,0.995,0.989,0.995,0.990,0.989,0.989,0.963,0.978,and 0.993, respectively.The POCT system could not work at 35℃ or higher temperature, and there was no difference in the results of detection between temperatures of 10-30℃or RH of 70%-90% and normal temperature and humidity(20℃,RH 50%) (P>0.05). However, the result of ALT and CK at high temperature and humidity was significantly higher than at normal temperature and humidity(P<0.001,and P=0.011, respectively).Conclusion The biochemical module of field POCT system(A) has a good correlation with the common large biochemical analyzer, and its precision meets the requirement of laboratory detection, but jaundice and hemolytsis can interfere in several tests to varying degrees.The POCT system can basically ensure accurate detection under field conditions of temperature and humidity, but should not work under extreme environments.

Objective To study the facial cosmetic zonation and its application of adipose injection for facial juvenescence.Methods According to standard of aesthetics,we divided total face into ten cosmetic units and 49 cosmetic sub-units.23 patients,injected adipose for facial juvenescence,were evaluated.Results 149 cosmetic units from 23 patients were injected with adipose granules,and involved 300 sub-units.Each unit was injected with adipose from 1 to 35 ml.After injection,the faces showed swelling in varying degrees,which resolved from ten to fourteen days.Local ecchymosis occurred in 11 cases,and resolved from five to twenty days.No any complication appeared,such as infection,scleroma and vascular embolism and so on.The follow-up results showed that one month later post-operation,swelling on injective sites resolved,and appearances were stable.3-6 months later post-operation,the injective sites were fuller.One year later,the good j uvenescence effect achieved,and the patients felt satisfactory.Conclusions On the basis of facial cosmetic zonation,the whole cosmetic evaluation combined with local cosmetic evaluation might be helpful to carry out adipose injection for facial juvenescence,and reach a satisfactory result.