ABSTRACT:Objective To investigate the effects of phenytoin (PHT)on the secretion of vascular endothelial growth factor (VEGF)and stem cell factor (SCF)based on the establishment of indirect co-culture system of rat bone marrow mesenchymal stem cells (BMSCs)and vascular endothelial cells (VECs).Methods Indirect co-culture model of rat BMSCs and VECs was established.Experimental groups:indirect co-culture groups (PHT concentrations were 0,20 and 40 μg/mL);the control group:BMSCs culture group and VECs culture group (PHT concentrations were 0,20 and 40μg/mL).The contents of VEGF and SCF in the culture supernatant were measured using double antibody sandwich ABC-ELISA method on cultivation days 2,4,6.Results ELISA assay of the rBMSCs and rVECs in indirect co-culture supernatants,collected on culture days 2,4 and 6 showed that:① VEGF:On culture day 2,VEGF level in the co-culture groups was significantly higher than those in BMSCs group (P <0.05)and rVECs group (P <0.001).As culture time prolonged and PHT concentration increased to 20 μg/mL and 40 μg/mL,VEGF level increased too (P <0.001,P <0.05 ).② SCF testing results showed that the secretion of SCF in co-culture groups was higher than that in the control groups.When PHT was 20 μg/mL,the secretion of
SCF increased as the incubation time increased;but as the incubation time increased, PHT concentration of 40 μg/mL made SCF content decrease.Each group did not significantly differ (P > 0.05 ).Conclusion PHT promotes the secretion of VEGF and may reduce the secretion of SCF.

OBJECTIVETo compare the surface apposition and the bone response at early period of implantation in two differently treated implants.

METHODSThe implants were subject to double acid-etched-H2O2/HCl-heat treatment and double acid-etching treatment, and then randomly implanted into the tibia of rabbits. After 2, 4, 8 weeks of follow up, the bone specimens containing implants were prepared and examined by a field emission SEM and EDX.

RESULTA layer rich with calcium and phosphorus was clearly demonstrated on the implants surface of both groups after 2 weeks of implantation, but it was mostly disappeared after 4 weeks. There were large amounts of osteoblasts cells on double acid-etched-H2O2/HCl-heat treated implants surface indicating the initiation of osteogenesis. After 8 weeks of implantation some new bones were attached on the implants surface in both groups, more bones attached were shown on double acid-etched- H2O2/HCl-heat treated implants surface.

CONCLUSIONA calcium and phosphorus-rich layer was formed on the implants surface of both groups at early period of implantation.

Animals ; Dental Implantation ; Dental Implants ; Dental Materials ; chemistry ; Dental Prosthesis Design ; Hydrogen Peroxide ; chemistry ; Osseointegration ; physiology ; Osteogenesis ; physiology ; Rabbits ; Surface Properties ; Tibia ; surgery ; ultrastructure ; Titanium ; chemistry

OBJECTIVETo explore the relationship between TCM syndrome type and gastric mucosa cell proliferation related controlling gene protein in chronic atrophic gastritis (CAG).

METHODSExpressions of cell proliferation related controlling gene protein, including proliferative cell nuclear antigen (PCNA), epidermal growth factor receptor (EGFR) and c-myc, from gastric mucosa of CAG model rats with different syndrome types were measured by immunohistochemistry and the changes of them before and after TCM intervention were also analyzed by image analysis.

RESULTSProtein expressions of PCNA, EGFR and c-myc in gastric mucosa of CAG model rats with different syndrome types (Pi-deficiency type, Gan-stagnation type and dampness-heat type) were different to some extent, and all of them reduced significantly after TCM intervention in the model rats of all syndrome types.

CONCLUSIONExpressions of cell proliferation related controlling gene protein in gastric mucosa of CAG model rats of different syndrome types were different to some extent, which provides a certain experimental evidence for revealing the essence of TCM syndrome type of CAG and judging the prognosis of various types.

Animals ; Diagnosis, Differential ; Drugs, Chinese Herbal ; therapeutic use ; Gastric Mucosa ; drug effects ; metabolism ; pathology ; Gastritis, Atrophic ; diagnosis ; drug therapy ; metabolism ; Immunohistochemistry ; Male ; Medicine, Chinese Traditional ; Phytotherapy ; Proliferating Cell Nuclear Antigen ; biosynthesis ; Proto-Oncogene Proteins c-myc ; biosynthesis ; Random Allocation ; Rats ; Rats, Wistar ; Receptor, Epidermal Growth Factor ; biosynthesis ; Syndrome

Background and purpose: Small bowel adenocarcinoma (SBA) is uncommon, and frequently diagnosed at late stage. Chemotherapy is the main treatment method for advanced SBA. Despite recent progress in SBA therapy, no standard regimen has been established up to now, and new active regimen is expected to improve the outcome of this disease. The purpose of this study was to evaluate the efifcacy and safety of S-1/oxaliplatin for the treatment of advanced SBA. Methods:In a retrospective study, clinical characteristics and outcomes of 29 patients with advanced SBA were collected and analyzed. Patients received oral S-1 40 mg/m2, twice daily, d1-14, oxaliplatin was administered intravenously 130 mg/m2 on the ifrst day of every cycle, repeated every 3 weeks. Efifcacy and toxicity were evaluated after at least two consecutive cycles. Results:All patients were evaluated for efifcacy and safety. The objective response and disease control rates were 37.9%and 65.5%, respectively. The median progression-free survival and overall survival were 5.4 months (95%CI:3.6-7.2) and 13.2 months (95%CI:6.7-19.7), respectively. In univariate analysis, the following factors were signiifcantly associated with poor outcome:not ifrst line chemotherapy setting, ECOG performance status>1 and sites of metastasis>2 (Log-rank, P<0.05). The treatment related adverse events were mild and manageable. Myelosuppression, gastrointestinal reaction, fatigue, sensory neuropathy and rash were the most common toxicities. Conclusion:This study was the ifrst to report the efifcacy of S-1 combined with oxaliplatin for advanced SBA. S-1/oxaliplatin may be effective and safe for advanced SBA and worthy of further study.

Objective To observe the protective effect of acetylcysteine against radiation pneumonia.MethodsTotal of 80 patients who were inoperable were randomly allocated into treatment group and control group.Using conformal radiation technology and the total dose was 65 ～ 75Gy.The patients in treatment group were given acetylcysteine and radiotherapy;the patients in control group were given radiotherapy only.ResultsAll patients were treated radiotherapy.The effective rate( CR and PR) of treatment group was 90％,and that of control group was 85％(P ＞ 0.05);The incidence of acute radiation pneumonia and pulmonary fibrosis in treatment group were 15％ and 20％,respectively;and that of control group were 33％ and 45％ respectively.There was significant difference between the two groups ( P ＜ 0.05 ).ConclusionUsing acetylcysteine during radiotherapy could prevent radiation pneumonia in the non-small cell lung cancer patients.

OBJECTIVETo analyze the complications of percutaneous kyphoplasty except bone leakge for the treatment of osteoporotic thoracolumbar vertebral compression fractures.

METHODSFrom October 2008 to October 2012,178 patients with 224 osteoporotic vertebral compression fractures were treated with percutaneous kyphoplasty under local anethsia. There were 72 males and 106 females,ranging in age from 58 to 92 years old,with an average of 75.3 years,including 93 thoracic vertebrae and 131 lumbar vertebrae. The complications except bone cement leakage were analyzed during operation and after operation.

RESULTSAll operations were successful and all patients were followed up from 12 to 60 months with an average of 26.2 months. No death was found. Bone cement leakage occurred in 27 cases, about 15.1% in 178 cases; and complications except bone cement leakage occurred in 15 cases. There was 1 case with cardiac arrest,was completely recovery by cardiopulmonary resuscitation (CPR) immediately; and 1 case with temporary absence of breathing,was recovery after treatment. There were 3 cases with fall of blood pressure and slower of heart rate; 1 case with intestinal obstruction; 2 cases with local hematoma and 1 case with intercostal neuralgia. Vertebral body fractures of 2 cases were split by bone cement and the fractures of adjacent body occurred in 4 cases.

CONCLUSIONIt's uncommon complication except bone cement leakge in treatment of osteoporotic thoracolumbar vertebral compression fractures with percutaneous kyphoplasty. The complication of cardiopulmonary system is a high risk in surgery; and cytotoxicity of bone cement,nervous reflex,fat embolism and alteration of intravertebral pressure may be main reasons.

Aged ; Aged, 80 and over ; Female ; Fractures, Compression ; surgery ; Humans ; Kyphoplasty ; adverse effects ; Lumbar Vertebrae ; injuries ; surgery ; Male ; Middle Aged ; Osteoporotic Fractures ; surgery ; Postoperative Complications ; etiology ; Spinal Fractures ; surgery ; Thoracic Vertebrae ; injuries ; surgery

Antibodies, Monoclonal, Murine-Derived ; metabolism ; Diagnosis, Differential ; Female ; Follow-Up Studies ; Hemangioendothelioma ; metabolism ; pathology ; surgery ; Hemangioendothelioma, Epithelioid ; metabolism ; pathology ; surgery ; Humans ; Lymphatic Metastasis ; Middle Aged ; Platelet Endothelial Cell Adhesion Molecule-1 ; metabolism ; Sarcoma ; metabolism ; pathology ; surgery ; Thigh ; Vimentin ; metabolism ; von Willebrand Factor ; metabolism

OBJECTIVETo investigate the effect of siRNA silencing the role of C-Jun N-terminal Kinase (JNK) gene in excessive endoplasmic reticulum stress on lung ischemia/reperfusion injury.

METHODSMouse model of pulmonary ischemia reperfusion injury (PIRI) in situ was established with unilateral lung in vivo. Seventy experimental mice were randomly allocated into seven groups (n = 10): Sham group (Sham group), ischemia reperfusion group (I/R), PBS+ Lipofectamine2000TM transfection reagent group (I/R + PBS+ Lipo group), negative control group (I/R+ SCR group), JNK-siRNA group (I/R + siRNA(JNK1), siRNA(JNK2), siRNA(JNK3)). Mice were euthanized after experimental time out, and left lung tissue was extracted. Wet/dry lung weight ratio (W/D) and total lung water content (TLW) were tested. Light microscope, alveolar damage quantitative evaluation index (IQA) and electron microscope were observed. The expression levels of JNK and glucose regulatex protein(GRP78) were detected by RT-PCR and Western blot. Apoptosis of lung tissue was determined by TUNEL.

RESULTSCompared with Sham group, all indicators above of I/R + PBS + Lipo group and I/R + SCR group were significantly increased (P < 0.01), and compared with I/R group, those indicators of the three groups all had no notable difference; those indicators were not statistically different between I/R + PBS + Lipo group and I/R + SCR group, and compared to the three groups, the above indicators in JNK-siRNA group were lower (P < 0.05, P < 0.01) except that the expression levels of GRP78 was not statistically different.

CONCLUSIONI/R induces excessive ERS in lung tissue, in which JNK pathway participates in apoptosis, leading to lung tissue injury.

Animals ; Apoptosis ; Endoplasmic Reticulum Stress ; Heat-Shock Proteins ; metabolism ; JNK Mitogen-Activated Protein Kinases ; genetics ; Lung ; physiopathology ; Lung Injury ; genetics ; MAP Kinase Signaling System ; Mice ; RNA, Small Interfering ; Reperfusion Injury ; genetics

Adult ; Antiphospholipid Syndrome ; diagnosis ; Cesarean Section ; Diagnostic Errors ; Female ; Humans ; Infarction ; diagnosis ; Liver Diseases ; diagnosis ; Pregnancy

Objective To discuss the prostate biopsy results in young men with age less than 50 years and with PSA 4-10 μg/L.Methods From January 2006 to December 2011,22 patients with PSA 4-10 μg/L underwent prostate biopsy for free/total PSA ≤ 0.16 (20 cases) and/or positive digital rectal examination (DRE) (4 cases).The nean age was 43 years (range,24-49 years),the mean PSA level was 7.08 μg/L (range,4.17-9.74 μg/L),the mean free/total PSA level was 0.11 (range,0.03-0.53).Radiologic suspicious lesion was founded in 13 cases.Clinicopathological data from these patients were reviewed.Results The results of the biopsy were 1 (4.5％) case of prostate cancer,2 cases (9.1％) with tuberculosis,9 cases (40.9％) with inflammation,10 cases (45.5％) with benign tissue.In 20 cases with free/total PSA ≤0.16,only 1 case was diagnosed as prostate cancer.In 4 cases with positive DRE,tuberculosis (2 cases) and inflammation (1 case) were diagnosed.Conclusions The prostate cancer detection was rare in young men less than 50 years of age with PSA 4-10 μg/L.The most common cause was prostate hyperplasia with inflammation.