Objective: Hypericin content was determined in the extract of hypericum by dual-wavelength spectrophotometry. Methods: The wavelengths were adopeted 589nm～647nm against a methanol blank. Results: The linear correlation was observed within the range of 1.30～29.75?g/ml(r=0.9998). The average recovery of hypericin was 102.32%(n=6), RSD was 1.08%. Conclusion: the result was exact, method was simple and convenient .

BACKGROUND:It has been found that the compressive strength and flexural strength of nano-hydroxyapatite combined with light-cured resin matrix can neet the requirements of dental restorative materials. OBJECTIVE:To detect the cytotoxicity of nano-hydroxyapatite/composite resin, and to analyze its effects on the dental restoration. METHODS:In vitro test:passage 5 periodontal ligament fibroblast-like cel s and L-929 cel s suspensions were cultured in the 10%, 50%, 100%of nano-hydroxyapatite/composite resin extracts, respectively, and fresh maintenance medium functioned as negative control group. Absorbance values were detected within 7-day culture. In vivo repair test:57 cases with tooth defect were enrol ed containing 37 males and 20 females aged from 15 to 31 years old, and al were subjected to nano-hydroxyapatite/composite resin treatment. A 3-year fol ow-up was undergone to detect the completeness, marginal adaptation and color matching of the restoration, as wel as the periodontal probing depth, sulcus bleeding index, tooth mobility, dental plaque index, gingival crevicular fluid and aspartate aminotransferase level. RESULTS AND CONCLUSION:In vitro test results showed that the different concentrations of nano-hydroxyapatite/composite resin extracts had no effects on both periodontal ligament fibroblast-like cel s and L-929 cel s. In vivo repair test results found that after 3 years of fol ow-up, the periodontal probing depth, sulcus bleeding index, tooth mobility, dental plaque index, gingival crevicular fluid and aspartate aminotransferase level of patients were significantly decreased than those before repair (P<0.05), but the alkaline phosphatase level revealed no significant change (P>0.05). Unfortunately, three cases with incomplete restoration, four cases with color mismatching, and three cases with the inadaptable edge occurred. To conclude, the nano-hydroxyapatite/composite resin holds good biocompatibility and no cytotoxicity, which can maintain a good periodontal health condition in the dental restoration.

Optic nerve glioma (ONG) is a rare central nervous system tumor that occurs in children and adolescents. It’s main pathological type is low-grade pilocytic astrocytoma. It is divided into sporadic ONG and neurofibromatosis type 1 (NF-1) related ONG. Due to the close relationship between ONG and the optic nerve, there is its particularity in diagnosis and treatment. The diagnosis of ONG mainly relies on medical history, symptoms and signs, as well as imaging examinations such as MRI and CT. ONG should be differentiated from optic nerve sheath meningioma, optic neuritis, optic nerve metastasis and other diseases. In recent years, newly discovered molecular targeted therapy and anti-vascular endothelial growth factor drugs are a powerful supplement to ONG. When chemotherapy is not sensitive or resistant, radiotherapy can be considered, but it is only recommended for patients over 7 years of age. Surgery can be considered when the patient’s visual impairment is severe and the appearance of the eye is significantly affected. In addition, due to the susceptibility of NF-1 patients to tumors, the chemotherapy regimen should take into account the risk of secondary leukemia caused by the drug, and the timing of radiotherapy should be after the age of 10. We look forward to further ONG clinical research, which will bring more references for future clinical work.

Background and purpose: Infiltration and metastasis are characteristic of the biological behavior of cancer. Blood circulation and lymphatic spread are two important ways for neoplasm metastasis. The lymphatic vessel is one of the earliest routes for solid neoplasm metastasis. However, compared to tumor blood vessels, there were only a few studies on the research for lymphatic vessel spread. In recent years, with the identification of vascular endothelial growth factor-C (VEGF-C), VEGF-D and lymphatic endothelial markers including lymphatic vessel endothelial hyaluronan receptor-1 (LYVE-1), vascular endothelial growth factor receptor-3 (VEGFR-3), glomerular podocyte membrance mucoprotein (podoplanin) and the homeobox transcription factor (Prox-1), lymphangiogenesis has become one of the important areas in the study of tumor metastasis. This paper was to study the expression of proprotein convertase (PC)5, PC7, VEGF-C, VEGF-D and their receptor VEGFR-3 in patients with non-small cell lung cancer (NSCLC) and their clinico-pathoiogical value. Methods: Twenty specimens of the NSCLC, peritumoral tissues as experimental group and nine pulmonary benign diseases as control group were studied. The expression of PC5, PC7, VEGF-C, VEGF-D and VEGFR-3 mRNA in specimens of those tissues were studied by real-time quantitative reverse transcriptase polymerase chain reaction (real-time quantitative RT-PCR). Results: ①The expressions of PC5, PC7, VEGF-C, VEGF-D, VEGFR-3 mRNA in specimens of NSCLC were significantly higher than those of the peritumoral and pulmonary benign diseases tissues (P

Objective To evaluated the preserving or removing jejunal mucosa pancreatico-jejunal invaginated anastomosis in pancreaticoduodenectomy.Methods Between February 2003 and December 2012,58 patients underwent pancreaticoduodenectomy using pancreaticojejunal invaginated anastomosis in our department.In group A,28 patients received pancreatico-jejunal invaginated anastomosis using jejunum preserving technique.Briefly,3 to 4 cm remanent pancreas was inserted into jejunum and thc jcjunum was bundled up using No.7 silk thread at 2 to 3 cm distant to the cutting surface of the pancreas.In group B,30 patients received pancreatico-jejunal invaginated anastomosis using jejunum removing technique.Briefly,the jejunum mucosa was everted and the proximal 3 cmlong mucosa was removed.Then the everted jejunum was re-positioned and the ending of the jejunum was interruptedly sutured to the remanent pancreas.Finally,the covered jejunum was tied up as the group A.Results The pancrcatico-jejunal anastomosis time was 36 ±0.34 minutes shorter in group A than group B (P ＜0.001).The incidence of pancreatic fistula was higher in group B (20.0％) than group A (0％).In contrast,the incidence of post-operative pancreatic bleeding was compared between the two groups (3.6％ vs 3.3％,P =1.000).Conclusions Preserving ejunum mucosa pancreatico-jejunal invaginated anastomosis was unaffected by pancreatic texture pancreatic duct size and position.This method takes the advantages of simple operation and reducing the incidence of pancreatic fistula.

Background and purpose:Conventional cytology is valuable in diagnosing the cancer cells in lymph nodes of patients with lung cancer. However , the diagnostic value of detecting lymph node and paracancer micrometastasis was limited. Our study was to investigate the mRNA expression level of lung specif ic X protein(LUNX) and cytokeratin 19(CK19) and its signifi cance in the carcinogenesis,metastasis and prognosis of NSCLC. Methods: Quantitative analysis with reverse transcriptase polymerase chain reaction(Real-Time RT-PCR) was used to detect the mRNA expression level of LUNX and CK19 in 20 tumor tissues and 42 regional lymph nodes from 20 patients with NSCLC, and 6 lymph nodes from 9 patients with pulmonary benign diseases as control. Meanwhile, all lymph nodes were also examined by conventional pathological method. Results:①the mRNA level of Lunxin in cancer Tissue was signifi cantly higher than that in the control group, but there was no association with Lymphatic Metastasis,Tumor Size and TNM grade.②the mRNA level of Lunx in the cancer Tissues was signif icantly higher than that in the control group, and was associated with Lymphatic Metastasis,Tumor Size and TNM grade.③the mRNA of CK19 in lymph nodes was almost the same as control, and not associated with tumor size,lymphatic metastasis and TNM grade.④the mRNA of LUNX in lymph nodes was almost the same as control, which has no acossiation with lymphatic metastasis,tumor size and TNM grade.⑤ mRNA of CK19 and LUNX was unrelated to age,sex and histological type .⑥there was signifi cant difference between using Real-Time RT-PCR methods and the routine pathological methods to detect lymph node metastasis in lung cancer. Conclusion:This result suggested that the detection of LUNX message RNA and CK19message RNA might be helpful to diagnose NSCLC micrometastasis in lymph nodes. LUNX was superior to CK19 both in sensitivity and specifi city. The establishment of this method may increase the positive rate of detecting metastatic regional lymph nodes in non small cell lung cancer.

Background and purpose:Inf iltration and metastasis are characteristic of the biological behavior of cancer.Blood circulation and lymphatic spread are two important ways for neoplasm metastasis.The lymphatic vessel is one of the earliest routes for solid neoplasm metastasis.However,compared to tumor blood vessels,there were only a few studies on the research for lymphatic vessel spread.In recent years,with the identifi cation of vascular endothelial growth factor-C(VEGF-C),VEGF-D and lymphatic endothelial markers including lymphatic vessel endothelial hyaluronan receptor-1(LYVE-1),vascular endothelial growth factor receptor-3(VEGFR-3),glomerular podocyte membrance mucoprotein(podoplanin)and the homeobox transcription factor(Prox-1),lymphangiogenesis has become one of the important areas in the study of tumor metastasis.This paper was to study the expression of proprotein convertase(PC)5,PC7,VEGF-C,VEGF-D and their receptor VEGFR-3 in patients with non-small cell lung cancer(NSCLC)and their clinico-pathological value.Methods:Twenty specimens of the NSCLC,peritumoral tissues as experimental group and nine pulmonary benign diseases as control group were studied.The expression of PC5,PC7,VEGF-C,VEGF-D and VEGFR-3 mRNA in specimens of those tissues were studied by real-time quantitative reverse transcriptase polymerase chain reaction(real-time quantitative RT-PCR).Results:①The expressions of PC5,PC7,VEGF-C,VEGF-D,VEGFR-3 mRNA in specimens of NSCLC were signifi cantly higher than those of the peritumoral and pulmonary benign diseases tissues(P

Objective To investigate diagnosis and surgical treatment of primary retroperitoneal tumor. Methods The clinical data of 26 cases with primary retroperitoneal tumor was retrospectively analyzed.Results 13 cases with benign tumor and 10 cases with malignant tumor underwent total resection, only 3 cases with malignant tumor underwent local resection. One case with malignant tumor recurred within 2 weeks and death after operation about 28 days.Conclusions IVP,B-ultrasonography, CT and MR diagnosis of primary retroperitoneal tumor is very important for preparation of preoperation and estimation of target organ. Repeatedly operation can improve cure rate.

Objective To analyze the diagnosis and treatment of pancreatic trauma with main pancreas duct break. Methods Forty-four cases of severe pancreatic trauma with main pancreas duet break were retrospectively analyzed including their diagnosis and different operation performed according to the severity of pancreatic trauma. Results All of severe pancreatic trauma could be diagnosed by CT scan and B-ultrasonic examination. But the main pancreas duct break or not should be determined by surgical exploration. Emergency operations were performed for all cases , distal part pancreaticojejunostomy in 27 cases; modified duodeno-divertiulaization in 3 cases, duode-nojejunostomy in 3cases, pancreaticeduodenectomy in 2 cases, 41 cases were cured. The mortality was 6.8%. Conclusion CT scan is the most helpful means to diagnose pancreatic trauma. An appropriate and timely emergen-cy operation is the key to reduce mortality.

The effects of Saussurea Flavone Glycoside A1(SFG) on CNS were studied by observing autonomous activity, cortical electric activity, and determing learning ability in mouse.Results showed that mouse autonomous activity decreased obviously (P