Based on the standard strain-Vibrio parahaemolyticus BJ1.1997, temperature (7?C～43?C) and salinity (0.5%～9.5% NaCl) which affected its growth status was studied with uniform design. The results showed that Logistic equation was optimal in primary models, the second was Gompertz equation, the last was Linear equation, so growth parameters can calculated from Logistic equation. The secondary model was developed by square root models, its r value was 0.9863, the lowest growth temperature was 9.0506?C and the highest growth salinity was 5.93% [the corresponding lowest growth water activity (Aw min) was 0.9227]. Through F test, residual analysis and evaluation by bias factor and accuracy factor, the model can exactly describe the relationship between the growth rate and combined effect of temperature and salinity (water activity).

Epithelial mesenchymal transition (EMT) is a process of normal cell physiological development, in which epithelial cells transform into mesenchyme cells through a specific program. EMT plays a key role in inflammatory reaction, cell development, tumor invasion, and metastasis and has an interrelation with prostate cancer stem cells. Recent researches show the involvement of EMT in the development and metastasis of prostate cancer. This article reviews the specific roles and action mechanisms of EMT in the progression of prostate cancer.
Biomedical Research ; Cell Differentiation ; Disease Progression ; Epithelial Cells ; physiology ; Epithelial-Mesenchymal Transition ; physiology ; Humans ; Male ; Mesenchymal Stromal Cells ; Neoplastic Stem Cells ; physiology ; Prostatic Neoplasms ; pathology

Objective To observe and evaluate the effect of ultrasound guided percutaneous ethanol injection for hyperparathyroidism secondary to chronic renal failure. Methods Fifty-three patients with secondary hyperparathyroidism in Nanjing General Hospital Military Command from January 2011 to May 2013 were treated by percutaneous ethanol injection. The echogenicity, size and blood supply of parathyroid glands were observed by color Doppler ultrasound before and after treatment. Parathyroid hormone (PTH) and volumes of parathyroid glands were analyzed and compared with non-paired t test. Results Before treatment, the parathyroid gland volume was (5.28±0.84) cm3. The enlarged parathyroid glands had homogeneous hypoechogenicity and abundant blood supply, and the PTH was (1041.6±37.1) ng/L. After treatment, the size of solitary parathyroid gland was (3.93±0.67) cm3 which did not change significantly compared with that before treatment. The echogenicity of parathyroid glands enhanced and blood supply decreased after injection ethanol into solitary parathyroid. PTH [(509.2±27.6) ng/L] decreased obviously (t=3.792, P < 0.05). Conclusion Color Doppler ultrasound guided percutaneous injection of ethanol has an important role in the treating of secondary hyperparathyroidism and the curative effect can be observed timely.

Objective:To analyze and evaluate the degassing effect of vacuum degassing apparatus through the determination of ox-ygen content in pure water, gas pressure and air volume, and compare with suction filtration, boiling and ultrasonic methods to choose the appropriate degassing method for dissolution medium and guide the daily inspection work. Methods: The water residual oxygen, gas pressure and air volume were determined using a single water quality on-line monitoring instrument and a Carbo QC Anton Pear in-strument. The degassing effect of the vacuum degassing apparatus was detected under the conditions of negative pressure and certain de-gassing time. The degassing effect was also compared with that of suction filter, boiling and ultrasonic methods. Results: Under the conditions of 0. 06 MPa negative pressure, 41℃ medium temperature and 30 min degassing time, the degassing effect of the vacuum degassing apparatus was obvious. The degassing effect of suction filter and boiling methods was similar to that of the vacuum degassing apparatus, while that of ultrasonic method wasn't obvious. Conclusion:The use of vacuum degassing apparatus is simple and efficient with obvious degassing effect, which is suitable for the degassing process of dissolution medium.

Hedgehog (Hh) signaling pathway is critical during embryonic development. Recent studies have shown that Hh sig-naling plays an important role in oncogenesis and development of many malignant tumors. In particular, activation of the Hh signaling pathway is implicated in the aggressiveness and progression of gastric cancer. This review provides an overview of the research prog-ress on the role of Hh pathway in gastric cancer. Investigation of this pathway may reveal a novel target for gastric cancer therapy.

Objective To compare the efficacy and safety of intravesical instillation of pirarubicin (T HP) to prevent the post -operative recurrence of superficial bladder cancer with same dose variable concentration .Methods A tota1 of 56 cases of superficial bladder cancer after transurethral resection (TURBT ) were randomly divided into two groups(High concentration group :25 cases , Low concentration group :31 cases) .Infusion dose of THP is 30 mg .The concentration of THP is 1 .0 g/L in H group ,0 .6 g/L in L group .Both groups were installed within 24 hours after operation .Both groups were installed once a week for 8 weeks after the first installation ,then once a month until 1 year after operation .All cases were followed up ,the tumor recurrence time ,recurrence rates and complications were compared .Results All cases except 2 in L group received 6 -30 months follow up ,with an average time of 17 .6 months .In H group ,1 patients recurred during the follow-up period ,with a recurrence rate of 4 .0% and recurrence time of 12 .4 months ,while in L group ,3 cases recurred ,with a recurrence rate of 10 .3% and an average recurrence time of 9 .8 months .Adverse reactions were main1y Urinary irritation symptoms .The difference of recurrence rate and average recurrence time in each group were statistically significant (P< 0 .05) ,while the difference of adverse reactions were not statistically significant (P>0 .05) .Conclusion This study shows that high concentration THP intravesical instillation could effectively reduce the recur-rence rate and delay the recurrence time .Each concentration was well tolerated .

Objective To evaluate the use of flexible cystoscope in the surgical management of complex renal calculi. Methods Flexible cystoscope and a set of stone baskets were used to help the surgical of complex renal calculi via the renal pelvis incision or the dilated ureter during operation.A pyelostomy with the use of a Foley's catheter was carried out if necessary and the residual stones could be removed via the pyelostomy tract later on. Results 31 cases of complex renal stones have been surgically treated.Flexible cystostomy was used intraoperatively in 11,postoperatively for the removal of residual stones in 16 and being used both intra and postoperatively in 4.A total of 106 stones have been removed.26 patients ( 83.9 %) have been free from any stone.2(6.4%) have undergone ESWL followed by flexible cystoscopy to remove the residual stones.3 patients (9.7%),however,still had residual stones in spite of the above procedure. Conclusions Flexible cystoscopy as an adjuvant procedure is an effective means in the surgical treatment of complex renal calculi especially for the removal of residual stones.The procedure is simple,safe and less expansive.

BACKGROUND:Human umbilical cord blood contains a large number of hemopoietic stem cels and mesenchymal stem cels. Neonate umbilical cord blood-derived stem cels show milder immunological rejection and lower immunogenicity than peripheral blood- and bone marrow-derived mesenchymal stem cels. OBJECTIVE:To investigate the feasibility of umbilical cord blood-derived CD133 cels for treatment of gestational diabetes, so as to provide novel methods for clinical treatment of gestational diabetes. METHODS:Mouse models of gestational diabetes were established by high-fat and high-sugar diet feeding. Umbilical cord blood-derived CD133 cels were sorted by flow cytometry sorting technique and then transplanted into mouse models of gestational diabetesvia the tail vein. At 7 days after cel transplantation, serum levels of fasting blood glucose, fasting insulin, total cholesterol and triacylglycerol were measured and mouse pancreatic tissue injury and repair was observed by hematoxylin-esoin staining. Mouse insulin resistance index and pancreatic islet function were analyzed using the homeostatic model assessment. RESULTS AND CONCLUSION:Umbilical cord blood-derived CD133 cels could be isolated from umbilical cord blood monocytes using flow cytometry sorting technique, with cel purity of (90.24±2.56)%. At 7 days after cel transplantation, serum levels of fasting blood glucose, fasting insulin, total cholesterol and triacylglycerol were significantly decreased, insulin resistance index was significantly decreased, and pancreatic islet function was significantly improved in mouse models of gestational diabetes (alP < 0.05). In addition, atrophy of pancreatic tissue and infiltration of inflammatory cels were reduced. These results show that umbilical cord blood-derived CD133 cel transplantation can improve the disease condition of gestational diabetes by repairing injured pancreatic tissue, decreasing insulin resistance index and improving pancreatic islet function.

Objective To study the effects of extracorporeal shock wave therapy (ESWT) on avascular nec-rosis of the femoral head. Methods Thirty-two rabbits were used to make the avascular necrosis of the femoral headmodel by use of freezing method. Two rabbits were chosen to check the result of the model. Thirty rabbits were ran-domly divided into 2 groups : a treatment group and a control group. Each group was observed 2, 4 and 8 weeks aftertreatment. Morphological and pathological changes of the femoral head were observed. An immunohistochemicalmethod was used to examine the distribution of vessel endothelium growth factor (VEGF) and fibroblast growth factor(bFGF) immunoreactive-positive cells in the bone tissues. Results Morphologically, the femoral heads of treat-ment group were smoother and glossier than those of the control group. The empty lacunae ratio, the number of theosteoblast was significantly different between the treatment and the control group. The expression of VEGF and hFGFin the bone tissues of treatment group increased significantly when compared with control group. Conclusion ES-WT can promote healing of avascular necrosis of femoral head.

Objective The use of in vivo cryotechnique (IVCT) in combination with electrocardiograph (ECG) to study cardiac microcirculation under different hemodynamic conditions in living mouse.Methods Living mouse heart monitored by electrocardiograph was suffered from IVCT and freezing substitution under normal blood flow,myocardial ischemia or cardiac arrest conditions.Hematoxylin eosin (HE)staining,Schiff's staining and immunofluorescence staining for serum albumin,immunoglobulin were utilized on continuous paraffin sections,respectively.Confocal microscopy and statistical analyses were used.Results Comparing with normal hemodynamics,microvascular red cell volume reduction,morphology changed,myocardial cell glycogen loss,serum albumin ectopic distribution to myocardial cytoplasm,T tubular network failure and spacing width were happened in myocardial iscbemia condition; different shapes of red blood cells,myocardial cells glycogen deficiency,T tubular network failure and interval narrowing were found under cardiac arrest conditions.Conclusions Cardiac microcirculation,pathological changes of myocyte and its surrounding microenviroument in living mouse heart can be immediately captured in situ by the application of IVCT and ECG.