ObjectiveTo investigate the relationship between the imaging manifestations and postoperative efficacy scores through measuring postoperative ankle mortise morphometry of Rüedi-Allg(o)wer Ⅲ pilon fracture.MethodsForty-seven cases of Rüedi-Allg(o)wer Ⅲ pilon fracture patients,including 20 males and 27 females with a mean of 43 years (range,21-65 years) were treated and followed up.Indexes including the width,height,depth,coronal angle and sagittal angle of ankle mortise were measured at the last follow-up.According to the Mazur score at the last follow-up,operated ankle functions were evaluated and divide into three groups (excellent group,good group and poor group.By comparing the five indexes of 47 cases and 3 groups between injury ankle and healthy ankle,we analyzed the correlation of the ankle mortise change and the ankle function.ResultsAll patients were followed up 18-24 months(mean,21 months).The results showed there were significant differences about all the measuring indexes except the height of ankle mortise between the injury ankle and healthy ankle of 47 follow-up cases.About the difference between both sides in 3 groups,the results showed there was a negative correlation between all indexes except the height of ankle mortise and the Mazur score.No correlation was found between the height of ankle mortise and the Mazur score.Recovering the ankle mortise's width,depth,coronal angle as well as sagittal anglein the surgery of severe pilon fractures has a significant effect on ankle function.ConclusionRecovery of the ankle mortise's width,depth,coronal angle as welld as sagittal angle during the surgery of severe pilon fractures has a significant effect on ankle function,so the anatomy of the ankle mortise should be recovered as much as possible.

Objective To investigate whether the macromolecular materials could enter cerebrospinal fluid and brain tissues in craniotomy with incision or non-incision of dura and arachnoid. Methods Adult male SD rats were randomly divided into three groups according to the random number table. The dura and arachnoid of rats in group A were cut open during craniotomy after general anesthesia; epidural craniotomy was done in rats in group B after general anesthesia; rats in group C (control group) were only generally anesthetized. All the rats were injected with Evans blue, a tracer used to detect the results, half an hour before each time point (1,3, 6, 12, 24, 72 hours and 1 week) via vein. The rats were executed at each time point to obtain the specimens of brain. The content of Evans blue in brain tissue was measured by fluorescence spectrophotometer for statistical analysis. The water content in the brain tissue was measured in a part of rats selected in groups A and B preoperatively and at postoperative 3 and 27 hours. Results It was found that some regions of the brain tissue were stained light blue in group A at 1,3, 6 and 24 hours. The blue was much lighter in brain tissue obtained at 72 hours in group A, and no blue stained at 1 week in group A . The contents of Evans blue in the brain tissues of rats in group A at 1,3, 6, 12, 24, 72 hours and 1 week were (18.07±1.25) μg/ml, (36.21±0.78) μg/ml, (25.73±1.14) μg/ml, (16.53±0.84) μg/ml, (23.34±1.91) μg/ml, (43.34±2.25) μg/ml and (25.27±1.88)μg/ml respectively, which were significantly higher than (3.15±0.45)μg/ml, (3.36±0.33)μg/ml, (2.98±0.54)μg/ml, (3.47±0.55)μg/ml, (3.54±0.37) μg/ml, (2.88± 0.42) μg/ml and (2.85±0.22) μg/ml respectively in group B and (2.97±0.37)μg/ml in group C (P<0.01). There was no significant difference in water content in brain tissue before and after operation (P>0.05). Conclusion After craniotomy with incision of dura and arachnoid, some macromolecular materials can enter the subarachnoid space and the brain parenehyma through blood-brain barrier of the wound of the scalp if the dura is sutured loosely.

Objective: To study the effect of volatile from isolated garlic sprouts on the germination characteristics of Angelica sinensis seeds under simulated continuous cropping stress. Methods: Treating the obstacle of A. sinensis seeds under simulate continuous cropping stress with the extract from Angelica Sinensis Radix and using isolated garlic sprouts to simulate garlic volatile allelopathy environment, so as to study the germination characteristics of A. sinensis seeds. Results: The extracts from Angelica Sinensis Radix inhibited the germination of A. sinensis seeds, and the higher the concentration was, the stronger the inhibition effects will be. The volatile from the isolated garlic sprouts promoted the germination of A. sinensis seeds, which was not treated with the extracts from Angelica Sinensis Radix at low concentration (50 g isolated garlic sprouts) and inhibited the germination at high concentration (100-200 g isolated garlic sprouts). The isolated garlic sprouts volatile had certain promoting allelopathy on the germination properties of A. sinensis seeds which were treated with the extracts from Angelica Sinensis Radix. When the fresh weight of the donor garlic sprouts was 50-100 g, the promoting effects on A. sinensis seeds germination reached extremely significant level (P<0.01). When the fresh weight of garlic sprouts was 200 g, the promoting effects were not significant (P<0.05). Conclusion: The volatile from the isolated garlic sprouts could alleviate the germination inhibition by extracts from Angelica Sinensis Radix.

OBJECTIVETo investigate the effects of Bushen Huoxue Fang (BSHX) on the apoptosis of epithelial cells in the prostatic ductal system of rats with benign prostatic hyperplasia (BPH) and its possible action mechanism.

METHODSOne hundred 3- month-old male Wistar rats were randomly divided into four groups of equal number (control, castrated, BPH model, and BSHX). BPH models were made by subcutaneous injection of testosterone following castration; the rats in the BSHX group were treated intragastrically with BSHX at 2.34 g/ml after modeling, while those in the other two groups with equal volume of saline, all for 37 days. On the 38th day, all the rats were sacrificed and their prostates harvested for detection of the distribution of TGF-beta1 and alpha-actin and the count of positive cells in the prostatic ductal system by immunohistochemical staining. The apoptosis rate of epithelial cells in the prostatic ductal system was determined by TUNEL assay.

RESULTSThe expression of TGF-beta1 was significantly increased in the rats of the BSHX group as compared with the BPH models in both the proximal prostatic duct ([15.28 +/- 4.30]% vs [36.42 +/- 8.10]%, P < 0.01) and the distal prostatic duct ([4.42 +/- 2.07]% vs [8.71 +/- 2.28 ]%, P < 0.05), while the expression of alpha-actin in the proximal duct was remarkably higher in the BSHX-treated rats than in the models ([28.14 +/- 7.43]% vs [18.28 +/- 4.07]%, P < 0.01), but lower than in the control animals ([33.57 +/- 6.85]%, P < 0.05). Compared with the control group, the BPH models and BSHX-treated rats both exhibited markedly decreased apoptosis of epithelial cells in the proximal prostatic duct ([39.42 +/- 9.20]% vs [3.86 +/- 1.34]%, P < 0.01, and [31.14 +/- 5.64]%, P < 0.01) and distal prostatic duct ([17.60 +/- 4.86]% vs [3.07 +/- 1.14]%, P < 0.01, and [12.37 +/- 2.25]%, P < 0.05). The apoptosis rate of epithelial cells in the prostatic ductal system was significantly higher in the BSHX-treated rats than in the BPH models (P < 0.01).

CONCLUSIONBy upregulating the expression of TGF-beta, BSHX can suppress the reduction of smooth muscle cells in the proximal prostatic duct, promote the apoptosis of prostatic epithelial cells, and thus effectively inhibit benign prostatic hyperplasia.

Actins ; metabolism ; Animals ; Apoptosis ; drug effects ; Disease Models, Animal ; Drugs, Chinese Herbal ; pharmacology ; Epithelial Cells ; drug effects ; pathology ; Male ; Prostatic Hyperplasia ; drug therapy ; metabolism ; pathology ; Rats ; Rats, Wistar ; Transforming Growth Factor beta1 ; metabolism

Objective: To investigate the current status and influencing factors of occupational stress among couriers. Methods: Couriers (n=925) were selected on this study used cluster sampling method from January to March 2018. They were from SF and Zhongtong Express Co., Ltd., on the Wechat platform, and surveyed by a job stress questionnaire based on a job demand-control model.Valid questionnaires(n=617) were obtained. Results: A total of 418 workers were occupational stress positive (67.7%). The results of Chi-square analysis showed that there were significant differences in occupational stress among workers categorized by job position, working years, mealtime, sleeping time, and weekly work time (P<0.05). The multivariate logistic analysis indicated that non-regular meals, short-term sleep and less than 0.5 working years were risk factors for occupational stress(P<0.05). Conclusion Couriers generally have occupational stress. The main influencing factors are job position, working years mealtime, sleeping time, and weekly work time. It is necessary to guide healthy lifestyle, rationally organize labor and assign tasks, and improve working environment to relieve their occupational stress.

OBJECTIVETo study absorption kinetics of scopoletin in rat stomachs and intestines.

METHODRats was cannulated for in situ recirculation. UV and HPLC methods were used to determine the concentrations of phenolsulfonphthalein and scopoletin, respectively.

RESULTThe absorption rates in rat stomachs at 2 h after administration was 76.31%; The absorption rates at colon, duodenum, ileum and jejunum were 46.25%, 40.54%, 38.21%, 32.77%, respectively. The absorption rate constant (Ka) at concentrations of 10.0144, 20.0288-40.0576 mg x L(-1) in intestine were 0.6434, 0.6137, 0.5970 h(-1), respectively. The Ka of scopoletin at pH of 6.0, 6.8 and 7.4 in intestine were 0.6217, 0.6033, 0.6137 h(-1), respectively.

CONCLUSIONThe concentrations and pH values of scopoletin solution had no distinctive effect on the absorption kinetics. The absorption of scopoletin was a first-order process with passive diffusion mechanism. Scopoletin was well absorbed at stomachs and intestines in rats. Colon was the best absorption site of scopoletin, which suggest that a sustained-release preparation should be suitable for this compound.

Absorption ; Animals ; Chromatography, High Pressure Liquid ; Female ; Hydrogen-Ion Concentration ; Intestinal Absorption ; Intestines ; metabolism ; Male ; Rats ; Rats, Sprague-Dawley ; Scopoletin ; pharmacokinetics ; Spectrophotometry, Ultraviolet ; Stomach ; metabolism

OBJECTIVETo investigate the mechanism of plasma bilirubin level increase after hepatic ischemia-reperfusion in rats.

METHODSRats were divided into a sham operation group (A group), a 20 min ischemia-reperfusion group (B group) and a 35 min ischemia-reperfusion group (C group). Study time points were 6 hours and 1, 3, and 5 days after the reperfusion. Pathological changes in the livers were studied with histological slides stained with hematoxilin and eosin. Routine biochemistry methods were used to detect the bilirubin level of blood plasma and the bile drained from the ischemic hepatic lobes. RT-PCR was used to analyze the expression of the multidrug resistance-associated protein 2 (MRP2) and mRNA. Immunohistochemistry was used to analyze the localization of MRP2 in the canalicular membrane.

RESULTSB and C groups showed a mild inflammatory reaction without hepatocyte necrosis. At 6 h and 1 day after reperfusion, there was a significant increase of the plasma bilirubin level and a decrease of the bilirubin level of the drained bile in B group. These changes lasted to the day 3 and day 5 in C group. MRP2 mRNA down-regulation was found at 6 h only in the B and C groups. No localization of MRP2 in the canalicular membrane was found but it appeared in "esicules" under the canalicular membrane in C group.

CONCLUSIONSAbsence of MRP2 localization in the canalicular membrane could be the cause of the blood plasma bilirubin level increase after liver ischemia-reperfusion.

Animals ; Bilirubin ; blood ; Liver Diseases ; blood ; Male ; Multidrug Resistance-Associated Proteins ; metabolism ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; blood

OBJECTIVETo investigate the molecular mechanism of haemophilia B caused by the novel mutation of Arg327Ile (R327I) in FIX gene.

METHODSThe R327I, R327Ala(A), R327Lys(K), R327Asn(N) and a replacement mutant (FIXβFVII), in which FIX β strand 324-329 was replaced by that of FVII 298-303, expression plasmids were constructed with site-directed mutagenesis method based on the wild-type (WT) FIX expression plasmid. The HEK293 cell was transiently transfected, then the activity of FIX (FIX:C) was assayed by one stage method in the conditioned medium, while the FIX:Ag in both the conditioned media and the cell lysates was measured by ELISA. The molecular weight and the semi-quantity of expressed FIX were analyzed by Western blot. Fluorescent protein expression plasmid was constructed to investigate the synthesis and secretion of the FIX R327I mutation in the viable cells.

RESULTSFIX:C of the R327I mutant protein was 4.49% of the level of the WT in the conditioned medium, and the FIX:Ag of the R327I mutant protein in the conditioned medium and the cell lysates was 31.02% and 129.29% compared to that of WT, respectively. The mutation was characterized as cross-reaction material reduced (CRMR). The viable cell fluorescent assays showed that the R327I protein was more in both the viable cells and in lysosome than that of WT. The FIX:C of the R327A, R327K, R327N and FIXβFVII mutants was reduced compared to that of WT, the reduction of FIX:C of FIXβFVII was the most significantly amount among all the mutants in medium. FIX:Ag of all the mutants in the medium, except that the R327K increased, was reduced. The result of Western blot showed that the molecular weight of R327I protein was the same as that of WT, but the amount of the protein was much less compared with WT in the conditioned medium.

CONCLUSIONThe abnormal synthesis and secretion as well as the abnormal function of the R327I mutant protein causes haemophilia B. The residue of R327 as well as the β strand domain of R327 located play important roles of the specific function of FIX.

Factor IX ; genetics ; HEK293 Cells ; Hemophilia B ; genetics ; pathology ; Humans ; Mutagenesis, Site-Directed ; Mutation ; Transfection

Objective To compare WHO 2004 and WHO 1973 pathological grading methods of non-muscle invasive urothelial neoplasms. Methods The clinical pathological features of 160 non-muscle invasive urothelial neoplasms patients, treated in our hospital from February, 1998 to Decem-ber, 2008, were re-graded according to WHO 2004 and WHO 1973 classification system. To evaluate recurrence and progression of all the patients during the follow up period, we used statistical method to analyses the differences between two classification system. Results There were 160 patients, ac-cording to WHO 1973 classification methods: 5 cases of papilloma, 52 cases of grade 1 tumors, 83 ca-ses of grade 2 and 20 cases of grade 3;By WHO 2004 classification method: 7 cases of papilloma, 31 cases of low-grade malignant potential of urothelial papilloma, 99 cases of low-grade papillary urotheli-al carcinoma and 23 cases of high-grade papillary urothelial carcinoma. There was no difference in re-currence among the grades of WHO 2004 and WHO 1973 pathological grading system (both P>0.05). Regarding the progress of non-muscle invasive papillary urothelial neoplasms, no significant difference was found among grades of WHO 1973 classification system(P>0.05)while difference exis-ted among grades of WHO 2004 pathological grading system (P<0.05), especially between papillary neoplasm of low malignant potential (PNLMP) and high grade papillary urothelial carcinomas(HG-PUC) (P<0.01). Moreover, HGPUC grade had more progression rate (30.4%) than G_3 grade (15.0%). Conclusions Compare to G_3 grade, HGPUC grade was more easily to make progress in pa-tients,due to this grade include more high malignant papillary urothelial carcinomas. Therefore, it is necessary for urologists to use a more rigorously follow up and therapy method in connection with HG-PUC grade of new classification system.

OBJECTIVETo determine the effect of histamine on N-methyl-D-aspartate (NMDA) induced neuron death and to elucidate its mechanism.

METHODSThe primary cortical cell culture was adopted. Neuron morphology and MTT assay were used to evaluate the drugs effects.

RESULTHistamine at doses of 10(-4) 10(-6) 10(-7) 10(-8) mol/L reversed the neuron death induced by NMDA (50 micromol/L) for 3 h. The protection of histamine peaked at doses of 10(-4) mol/L and 10(-7)mol/L. The effect of histamine of 10(-7) mol/L was reversed only by cimetidine an H(2)receptor antagonist. However, the effect of histamine of 10(-4) mol/L was reversed only by pyrilamine but not cimetidine.

CONCLUSIONHistamine could reduce neuron death induced by NMDA; its protection at a low dose might be mediated by H(2)receptor, and at a high dose by H(1)receptor.

Animals ; Cell Death ; drug effects ; Cells, Cultured ; Dose-Response Relationship, Drug ; Histamine ; pharmacology ; N-Methylaspartate ; toxicity ; Neurons ; drug effects ; Neuroprotective Agents ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Receptors, Histamine H1 ; physiology ; Receptors, Histamine H2 ; physiology