In this study histochemical method was used. It has been found that on the seventh day after epidural administration of capsaicin substance p like immuno- reactivity (SPAR) in laminae Ⅰ-Ⅱ of dorsal horn of spinal cord decreased obv- iously as compared with that of vehicle treated animals, meanwhile, the activity of fluoride resistant acid phosphatase (FRAP) in both laminae Ⅱ of dorsal horn of spinal cord and the B-type cells of spinal ganglion disappeared. On the cont- rary the Leu-enkephalin immunoreactivity (ENK-IR) in laminae Ⅰ-Ⅲ of dorsal horn of spinal cord apparently increased as compared with that in vehicle group. the evidence from functional measurement showed that capsaicin can raise pain threshold, however, vehicle didnot have obvious influence on pain threshold. The foregoing results suggest that epidural administration of capsaicin in adult rat can effect the level of neurontransmitters, the activity of enzymes and block the con- duction of the primary afferent C fibers; the capsaicin-sensitive C fibers may have relationship with the ENK-containing interneurons in dorsal horn of spinal cord.

Objective To evaluate the renal toxicity of vancomycin hydrochloride and irbesartan tablets using the zebrafish model. Methods After construction of AB zebrafish kidney model, the fish were treated with drug after fertilization 2 days (2 dpf) to 5 dpf. At the end of the experiment, the number of renal edema zebrafish was counted in each experimental group to evaluate the renal toxicity of drugs. Results The zebrafish development was normal and no obvious toxicity at the dose of 16?4 ng/fish (1/10 MNLD) for vancomycin, and zebrafish renal edema occurred rate was 3?3%, 10% and 10% respectively at the dose of 54?7 ng/fish (1/3 MNLD), 164 ng/fish (MNLD) and 273 ng/fish ( LD10 ) with the death rate of 0%, 0% and 16?7%, respectively, which indicated that there was significant renal toxicity of vancomycin at the dose of 54?7 ng/fish (1/3MNLD) to 273 ng/fish (LD10). Irbesartan didn’t induce renal toxicity at the dose of 8?3 μg/mL (1/10 MNLC) to 91 μg/mL (LC10). Conclusions The zebrafish model of renal toxicity can be used for the early evaluation of drug renal toxicity and we made evaluation of the renal toxicity of vancomycin and irbesartan with this model.

OBJECTIVETo study the effect of different concentration of phytohemagglutinin (PHA) on mouse embryo development.

METHODIn experiment 1, crude and purified PHA extracted from Yunnan white kidney bean with different concentration were added into M16 culture medium, the final concentration of PHA were: 50, 100, 200, 500, 1 000, 2 000 and 5 000 mg x L(-1) respectively. 2-cell stage embryos were collected and cultured in PHA containing or control medium for 72-96 h and their development were recorded. In experiment 2, different stage of embryos from 1-cell to blastocyst were treated by different concentrations of PHA same as experiment 1 and 10 000 mg x L(-1) in culture medium for 24 h before washing and cultured in M16 + PVA without PHA to blastocyst or hatching blastocyst stage.

RESULTLow concentrations PHA at 50-100 mg x L(-1) promoted embryo development and increased the number of blastocyst stage embryos. In contrast, high concentrations of PHA (> 1 000 mg x L(-1)) blocked the embryos development from 1-cell to blastocyst stage and showed apoptosis morphology or death.

CONCLUSIONDepending on the concentrations, PHA from white kidney bean shown promotion or inhibition on mouse embryo development. 1-cell stage embryo shown more sensitive to PHA treatment than that of later stage embryos. Pretreatment 24 h in PHA containing medium can influence the further development of embryos. Low concentrations of PHA is benefit to embryo development, but high concentrations of PHA (> 1 000 mg x L(-1)) will block of the development of embryos.

Animals ; Embryo, Mammalian ; drug effects ; Embryonic Development ; drug effects ; Female ; Male ; Mice ; Phaseolus ; chemistry ; Phytohemagglutinins ; pharmacology ; Pregnancy

OBJECTIVETo discuss the feasibility of terminal intestinal exteriorization (exteriorization without ileostomy) in laparoscopic anterior resection for rectal cancer.

METHODSClinicopathological data of 77 patients undergoing laparoscopic anterior resection for low rectal cancer in our department from January 2011 to December 2013 were retrospectively analyzed. After laparoscopic rectal resection, 32 patients received terminal intestinal exteriorization (exteriorization group) and 45 patients received preventive ileostomy (ileostomy group). Anastomosis-related, stoma-related and intestinal stoma closure-related morbidity was compared between the two groups.

RESULTSThere were no significant differences in operative time, blood loss and overall hospital stay between the two groups (all P>0.05). The total hospital cost was (5.39±1.74)×10(4) yuan in the exteriorization group, and (6.98±1.37)×10(4) yuan in the ileostomy group(P<0.01). The incidences of postoperative anastomotic fistula was not significantly different between the two groups(P>0.05). Three patients(9.4%) developed anastomotic leak in the exteriorization group and 2(4.4%) in the ileostomy group. The anastomotic leak was managed by opening the external intestinal wall and maturating an ileostomy under local anaesthesia. All these 5 patients were cured with nutritional support, antibiotics, continuous local drainage. In the exteriorization group, 5 patients had complications related to stoma and intestinal stoma closure operation(15.6%), which was lower than(42.2%) in the ileostomy group(P=0.013).

CONCLUSIONTerminal intestinal exteriorization in laparoscopic anterior resection is a safe and feasible surgical procedure with little trauma and less hospital cost, which can be an alternative as a prophylactic treatment for patients with high risk of anastomotic leak.

Anastomosis, Surgical ; Anastomotic Leak ; Drainage ; Humans ; Ileostomy ; Laparoscopy ; Length of Stay ; Postoperative Complications ; Rectal Neoplasms ; Retrospective Studies ; Surgical Stomas

Objective To discuss the feasibility of terminal intestinal exteriorization (exteriorization without ileostomy) in laparoscopic anterior resection for rectal cancer. Methods Clinicopathological data of 77 patients undergoing laparoscopic anterior resection for low rectal cancer in our department from January 2011 to December 2013 were retrospectively analyzed. After laparoscopic rectal resection, 32 patients received terminal intestinal exteriorization (exteriorization group) and 45 patients received preventive ileostomy (ileostomy group). Anastomosis-related, stoma-related and intestinal stoma closure-related morbidity was compared between the two groups. Results There were no significant differences in operative time, blood loss and overall hospital stay between the two groups (all P>0.05). The total hospital cost was (5.39 ±1.74) ×104 yuan in the exteriorization group, and (6.98 ±1.37) ×104 yuan in the ileostomy group (P<0.01). The incidences of postoperative anastomotic fistula was not significantly different between the two groups(P>0.05). Three patients(9.4%) developed anastomotic leak in the exteriorization group and 2(4.4%) in the ileostomy group. The anastomotic leak was managed by opening the external intestinal wall and maturating an ileostomy under local anaesthesia. All these 5 patients were cured with nutritional support, antibiotics, continuous local drainage. In the exteriorization group, 5 patients had complications related to stoma and intestinal stoma closure operation (15.6%), which was lower than (42.2%) in the ileostomy group (P=0.013). Conclusion Terminal intestinal exteriorization in laparoscopic anterior resection is a safe and feasible surgical procedure with little trauma and less hospital cost, which can be an alternative as a prophylactic treatment for patients with high risk of anastomotic leak.

Objective To discuss the feasibility of terminal intestinal exteriorization (exteriorization without ileostomy) in laparoscopic anterior resection for rectal cancer. Methods Clinicopathological data of 77 patients undergoing laparoscopic anterior resection for low rectal cancer in our department from January 2011 to December 2013 were retrospectively analyzed. After laparoscopic rectal resection, 32 patients received terminal intestinal exteriorization (exteriorization group) and 45 patients received preventive ileostomy (ileostomy group). Anastomosis-related, stoma-related and intestinal stoma closure-related morbidity was compared between the two groups. Results There were no significant differences in operative time, blood loss and overall hospital stay between the two groups (all P>0.05). The total hospital cost was (5.39 ±1.74) ×104 yuan in the exteriorization group, and (6.98 ±1.37) ×104 yuan in the ileostomy group (P<0.01). The incidences of postoperative anastomotic fistula was not significantly different between the two groups(P>0.05). Three patients(9.4%) developed anastomotic leak in the exteriorization group and 2(4.4%) in the ileostomy group. The anastomotic leak was managed by opening the external intestinal wall and maturating an ileostomy under local anaesthesia. All these 5 patients were cured with nutritional support, antibiotics, continuous local drainage. In the exteriorization group, 5 patients had complications related to stoma and intestinal stoma closure operation (15.6%), which was lower than (42.2%) in the ileostomy group (P=0.013). Conclusion Terminal intestinal exteriorization in laparoscopic anterior resection is a safe and feasible surgical procedure with little trauma and less hospital cost, which can be an alternative as a prophylactic treatment for patients with high risk of anastomotic leak.