Objective To compare bone marrow and lymph node biopsy specimens of two kinds of multidrug resistance (MDR) proteins expression and clinical significance in untreated non-Hodgkin lymphoma.Methods We developed multiparameter flow cytometric assay to quantify expression of these multidrug resistance (MDR) proteins in lymph node viable blasts and reverse transcriptase-polymerase chain reaction (RT-PCR) method to semi-quantitate mdrl mRNA of non-Hodgkin lymphomas, including 41 lymph node and 37 bone marrow, and further study of the correlation of the multidrug resistance proteins with general clinical parameters and treatment outcome. Results In two kinds of samples P-gp, MRP and LRP over-expression of three kinds of drug-resistant gene and frequencies are very low. Patients with P-gp expression had a poor outcome of chemotherapy than those without P-gp (P ＜0.05), Patients with LRP expression had poor outcome of chemotherapy than those without LRP (P ＜0.01). In the lymph node, P-gp expression was associated with higher clinical stage (P = 0.046), elevated serum lactate dehydrogenase levels (P ＜0.05). MRP wasn' t associated with higher clinical stage (P =0.369), elevated LDH (P =0.762) and higher malignant degree(P =0.214). LRP expression was associated with higher clinical stage, elevated LDH and higher malignant degree (P ＜0.05). And in the bone marrow, LRP expression was associated with elevated LDH (P =0.003), but the others have no differences. Conclusion These data suggest that P-gp and LRP expression are important mechanism of drug resistance associated with worse clinical outcome in previously untreated NHL. The use oflymph node biopsy to detect drug-resistant protein can provide more accurate clinical information than that of bone marrow.

OBJECTIVETo discuss the application and clinical effect of damage control concept in the treatment of severe limbs fractures combining with multiple trauma.

METHODSFrom July 2009 to July 2012, 30 patients with severe limbs fractures combining with multiple trauma were treated with the damage control concept, included 20 males and 10 females with an average age of (34.03 ± 12.81) years old ranging from 20 to 60 years old; the ISS averaged (35.00 ± 12.81) points (ranged from 26 to 54 points). And the control group also contained 30 patients with severe limbs fractures combining with multiple trauma treated by the traditional operation from June 2006 to June 2009, there were 23 males and 7 females with an average age of (34.23 ± 11.04) years old ranging from 18 to 65 years old. The ISS averaged (35.56 ± 11.04) points (ranged from 26 to 51 points). The age, gender, ISS, Gustilo classification, operation time, intraoperative blood loss, blood transfusion,postoperative complications and mortality rate were observed and compared.

RESULTSIn the damage control concept group,there were 28 cases surviving and 2 cases (6.7%) death; 6 cases of postoperative complication included 2 cases of adult respiratory distress syndrome, 1 case of multiple organ failure, 1 case of disseminated intravascular coagulation and 2 cases of wound infection. In the control group, there were 22 cases surviving and 8 cases death(26.7%); 13 cases of postoperative complication included 4 cases of adult respiratory distress syndrome,2 cases of multiple organ failure, 2 cases of disseminated intravascular coagulation and 3 cases of wound infection. There were no statistically significant differences between two groups in age, gender, ISS, Gustilo classfication and complication (P > 0.05), however there were statistically significant differences in mortality rate, operation time, blodd loss, blodd transfusion between two groups (P < 0.05).

CONCLUSIONDamage control concept is used to treat severe limbs fractures combining with multiple trauma which has the rapid and effective therapy, can improve survival rate and reduce complication.

Adolescent ; Adult ; Aged ; Embolism, Fat ; prevention & control ; Extremities ; injuries ; Female ; Humans ; Male ; Middle Aged ; Multiple Trauma ; surgery ; Postoperative Complications ; prevention & control

Objective To evaluate the effects of allografi and rhBMP-2 in posterolateral lumbar spinal fusion in a rabbit model.Methods Thirty rabbits were randomly divided into three groups:autogenous lilac crest bone graft group,rhBMP-2/allograft composite group,and allograft group.The animals were killed and sampled six weeks after the surgery.The lumbar intertransverse process fusion for the animals was assessed by manual palpation,biomechanical testing,radiography,histology and quantitative histology of spine fusion mass in a 6-week observation.Results The ratio of fusion in rhBMP-2/allograft composite group(90%)was significantly higher than that in autogenous lilac crest bone graft group(40%)and allograft group(20%)(P＜0.05).The autogenous lilac crest bone graft group and rhBMP-2/allograft composite group showed significantly higher uniaxial tensile strength than allograft group.The au- togenous lilac crest bone graft group and rhBMP-2/allograft composite group also showed significantly more new bone formation than allograft group,but there was no significant difference between the former two grnups.Conclusion rhBMP-2/allograft composite may be an ideal substitute for autograft in lumbar spinal fusion.

Objective To investigate the expression of miR-101 in pancreatic cancer and the effect of down-regulation miR-101 on proliferation of pancreatic cancer cell line ASPC1. Methods Real-time PCR was used to determine the expression of miR-101 in pancreatic cancer, adjacent tissues and pancreatic cancer cell line ASPC-1. The miR-101 over-expression vector (peGFPc1-miR-101) was constructed and was transfected into ASPC-1 cell. Transfection efficiency was measured by fluorescence microscope. The expression of miR101in the transfected cells was detected by real-time PCR. Cell viability analysis was performed by MTT. The targeted genes of miR-101 in pancreatic cancer were scanned by the online targeted gene prediction software (target Scan). Results The expression of miR-101 was in pancreatic cancer tissues, adjacent tissues and ASPC-1 cell line, respectively. The expressions in pancreatic cancer tissues and ASPC-1 cells were significantly lower than that in adjacent tissues ( P ＜ 0.01 ). The expression of miR 101 in transfected cells increased to 19.8 folds as much as that in the control group (P ＜0.01 ). Proliferation rate of transfected cells was significantly decreased, which was only 26% of primary cells ( P ＜ 0.01 ). EZH2 was the potential targeted gene of miR-101 in pancreatic cancer. Conclusions miR-101 was weakly expressed and it may affect the proliferation of pancreatic cancer cell by inhibiting the EZH2 expression.

Burnout, Professional ; Humans

OBJECTIVETo investigate the correlation of morphological characteristics and failure modes of two types of glass-fiber posts luted with self-adhesive resin cement and etch-and-rinse adhesive system.

METHODSThirty-six intact single-rooted premolars were collected and removed the crown. After root canal therapy, teeth were randomly divided into 4 groups. Group A: Self-adhesive with POPO fiber post. Group B: Etch-and-rinse with POPO fiber posts. Group C: Self-adhesive with Para Post. Group D: Etch-and-rinse with Para Post. Each root was sectioned into six 1 mm-thick serial slices and a push-out test was performed. The dentin-cement-post adhesive interface of each specimen and failure modes after fracture were evaluated by stereomicroscope observation.

RESULTSInterface morphology observe indicated that voids present in group B (64.2%) and D (66.7%) were significantly higher than group A (5.8%) and C (13.7%) (P < 0.001). Interface gaps appeared at the resin-dentine interface in group D (41.2%) were significantly higher than group A (13.5%) and C (11.8%) (P < 0.0083), and the failure modes in each group were significantly different (P < 0.0083) except for group A and B (P = 0.69).

CONCLUSIONVoids present in cement layer were associated with the luting agent involved. Morphological characteristics of the fiber post-resin luting agent-root dentin adhesive interface were discrepant with failure modes in different root region. There were interaction between adhesive systems and fiber posts.

Adhesives ; Composite Resins ; Dental Bonding ; Dental Pulp Cavity ; Dentin ; Dentin-Bonding Agents ; Glass ; Humans ; Methacrylates ; Post and Core Technique ; Resin Cements ; Tooth Root

Previous studies have shown that paeonol can antagonize acute myocardial ischemia and infarction in rat. This study further researched the effects of paeonol on blood pressure and blood flow in the artery of spontaneously hypertensive rats and its mechanisms related on vasomotion. Firstly, thirty spontaneously hypertensive rats were randomly divided into spontaneously hypertensive control group and paeonol-treating groups of high dose and low dose, and also, the other ten Wistar rats as healthy control group. Before and after the intraduodenal administration of the drug, arterial blood pressure was measured by carotid artery and blood flow through the renal artery and carotid artery in vivo were measured by animal flowmeter. The same volume of solvent was given to the spontaneously hypertensive control group and the healthy control group, and the other operations were same. In order to further study the effect of paeonol on vasomotor function, the superior mesenteric artery, renal artery and coronary artery of the spontaneously hypertensive rat were removed and separated, precontracted by a certain concentration of potassium chloride (KCl) and 5-serotonin (5-HT) respectively, and dilatory responses were assessed by cumulative addition of paeonol. Results showed that after duodenal one-time delivery of paeonol, the blood pressure significantly lowered, the renal arterial blood flow and the carotid arterial blood flow significantly increased in spontaneously hypertensive rat. And also, paeonol relaxed the mesenteric artery, renal artery and the coronary artery of spontaneously hypertensive rat in a concentration-dependent manner. These results indicated that the effect of paeonol on decreasing arterial blood pressure and increasing the arterial blood flow was related to its vasodilative effect.
Acetophenones ; pharmacology ; Animals ; Blood Pressure ; drug effects ; Male ; Rats ; Rats, Inbred SHR ; Regional Blood Flow ; drug effects ; Vasodilator Agents ; pharmacology

ObjectiveTo evaluate the effect of auscultation, partial pressure of carbon dioxide in end-expiration (PETCO2), transillumination technique to judge whether the endotracheal tube is misplaced into the esophagus. Methods A blinded randomized controlled trial was conducted. Sixty patients with American Society of Anesthesiology (ASA) gradeⅠ-Ⅱundergoing endotracheal intubation in Fengxian Central Hospital admitted from September 2014 to February 2015 were enrolled. Two endotracheal tubes with the same size were respectively inserted into the trachea and esophagus for the same depth after general anesthesia by the same person. Two blinded anesthetists with different experience checked the tube position using three methods including auscultation, PETCO2, and transillumination technique, respectively. The order of the tubes tested (trachea or esophagus) and the method used were randomized according to randomise numbers table. The experienced anesthetists conducted the test first, followed by an inexperienced anesthetist conducting the same methods. The numbers of right and wrong determinations with different methods by different anesthetists were recorded.Results Sixty patients underwent the procedures for 180 times, with intratracheal intubation for 90 times, and esophageal intubation for 90 times. It was shown that the results were not different in two groups [96.7% (174/180) vs. 92.2% (166/180),χ2 = 3.500,P = 0.057]. By using auscultation, the correct rate of experienced anesthetist was higher than that of inexperienced (95.0% vs. 78.3%,χ2 = 5.786,P = 0.013). Using PETCO2, both anesthetists were correct in all cases, and the accuracy was 100%. Using transillumination, the experienced anesthetist was mistaken in 3 cases (accuracy was 95.0%), while the inexperienced mistook in 1 case (accuracy was 98.3%), and no significant difference was found between two groups (χ2 = 0.500,P = 0.250). The correct rate of using transilluminaion was significantly higher than that of using auscultation (χ2 = 7.563,P = 0.004). The sensitivity and specificity of the auscultation was 70.0% and 80.0%, that of transillumination technique was 96.7% and 93.3%,and PETCO2 was 100%, respectively, for two groups.ConclusionsPETCO2 is the most reliable method for determining tube position, and it is superior to auscultation and transilluminaion. Transillumintaion technique is superior to auscultation, irrespective of anesthetists' experience, while the accuracy of auscultation showed an obvious relationship with the anesthetists' experience.

Objective To observe the clinical efficacy and safety of conbercept injection in the treatment of neovascular eye disease. Methods Thirty patients with neovascular eye disease were selected as research objects, which were given conbercept 0. 2 m L, injected into the glass cavity. Before operation and 3 months after operation, the changes of vision, central macular thickness (CMT) , serum levels of vascular endothelial growth factor (VEGF) , retinal blood flow and adverse drug reactions were observed. Results 3 months after operation and before operation, the vision were (0. 49 ± 0. 05) and (0. 68 ± 0. 12) logMAR, CMT were (196. 48 ± 11. 60) and (250. 23 ± 16. 45) μm, VEGF were (96. 85 ± 14. 61) and (152. 04 ± 13. 75) ng·L-1, peak systolic velocity were (10. 90 ± 1. 87) and (8. 38 ± 1. 46) cm·s-1, end-diastolic velocity were (3. 21 ± 0. 37) and (2. 06 ± 0. 29) cm·s-1, resistance indexes were (0. 57 ± 0. 09) and (0. 70 ± 0. 11) , maximum systolic flow velocity were (7. 27 ± 0. 82) and (8. 55 ± 1. 09) cm · s-1, minimum diastolic flow velocity were (4. 04 ± 0. 81) and (5. 08 ± 0. 99) cm·s-1, the differences were statistically significant (all P < 0. 05) . There were no adverse drug reactions observed in all patients during the treatment.Conclusion Conbercept injection has a safety in the treatment of neovascular eye disease, which can significantly decrease the patients 'serum levels of VEGF and improve the vision.

Heat shock protein gp96 is a glycoprotein which was found several years ago. Besides its function as a molecular chaperone, it is also reported to play important roles both in innate immunity and adaptive immunity. Gp96 can stimulate the maturation of antigen presenting cells (especially dendritic cells) and the secretion of cytokines. Gp96 and its associated peptides could stimulate peptide specific cytotoxic T lymphocyte reaction (CTL), which was very promising in the designing of anti-virus and anti-tumor vaccines. However the expression level of whole length gp96 was relatively low in E. coli and the purity of gp96 are not very suitable for further study. We successfully cloned the carboxy terminal fragment (560aa-751aa) of murine gp96 into the pGEX-6p-1 vector and expressed in BL21 strain. This fragment contains the peptide binding domain and the dimerization domain. After purification, the recombinant fusion protein was cleaved with the PreScission Protease and analyzed by Gelfiltration. The results show that this fragment may be related to the dimerization of gp96 and make an foundation for further investigations of the protein.
Animals ; Antigens, Neoplasm ; genetics ; Blotting, Western ; Chromatography, Gel ; Cloning, Molecular ; Mice ; Peptide Fragments ; genetics ; Recombinant Fusion Proteins ; biosynthesis ; isolation & purification