Accidents, Occupational ; Adolescent ; Carbon Monoxide Poisoning ; Humans ; Male ; Young Adult

AIM: To establish a method of analysing chemical components of the essential oil in Mulberry Leaves in Xinjiang. METHODS: The essential oil of Mulberry Leaves was extracted by ultrasound-steam distillation method.components were measured by GC-MS.About 80 peaks were separated totally.55 components of which were identified.The amount of the components from the essential oil was determined by normalization method.(RESULTS:) There were alkane(C_(10)～C_(40)),alkene,alcohols,unsaturated aldehydes,unsaturated ketones,carboxylic acid,ester,heterocyclic compound and aromatic hydrocarbon in essential oil in Mulberry Leaves.The main components were octadecane(9.11%),1,2-benzenedicarboxylic acid-bis(2-methyl)propyl ester(8.92%),3,7,11,15-tetramethyl-2-hexadecen-1-o1(7.19%).there was a small amount of terpene in essential oil in Mulberry Leaves. CONCLUSION: The method is reliable,stable and has a good repeatability.This method can be applied to the analysis of the essential oil components extracted from Chinese traditional medicine.

Objective To study the expression and significance of monocyte chemotactic protein-1 (MCP-1/CCL2) and vascular endothelial growth factor (VEGF) in serum samples of oral squamous cell carcinoma (OSCC) patients.Methods The concentrations of CCL2 and VEGF in the serum was assessed by ELISA in healthy donors (n=27) and OSCC patients (n=85).Then analyzed the correlation between the concentrations of CCL2 and VEGF and the relationship with patients' clinicopathological characteristics.Results CCL2 concentration was lower in OSCC patients than in healthy donors (69.12 ± 19.54 pg/ml vs 103.41 ± 34.42 pg/ml,t =6.477,P＜0.05).The expression of CCL2 was positively associated to TNM stage in OSCC (t=2.193,P＜0.05).VEGF concentration was higher in OSCC patients than in healthy donors (145.76 ± 49.34 pg/ml vs 70.35± 14.93 pg/ml,t=3.92,P＜0.05).There was a negative correlation between CCL2 and VEGF (r=-0.216,P＜0.05).The receiver operating characteristic (ROC) curve suggests that CCL2 and CCL2/VEGF in serum are good diagnostic markers to discriminate healthy people from OSCC patients,the cutoff values was 98.61 pg/ml and 0.82.Conclusion The expression of CCL2 and VEGF in serum correlated to OSCC progression,and it can be a potential diagnostic biomarker for oral disease.

An S-naproxen (S-NAP) molecularly imprinted monolithic stationary phase (MIMSP) with specific recognition for S-NAP and naproxen (NAP) was prepared by in situ technique,utilizing 4-vinylpridine (4-VP) as a function monomer,ethylene glycol dimethacrylate (EDMA) as a cross-linking agent,and low-polar solvents (toluene and dodecanol) as porogenic solvents.The selectivity of the polymers for S-NAP and NAP was evaluated by high performance liquid chromatography (HPLC).The binding characteristics were tested by Scatchard analysis.Racemic NAP could be specifically separated to some extent.At the same time,NAP could be separated from ibuprofen under optimized conditions.Scatchard analysis showed that two classes of binding sites existed in the S-NAP-imprinted polymers,with their dissociation constants estimated to be 1.045 and 5.496 μM,respectively.The results demonstrate that S-NAP and NAP can be recognized specifically on the obtained MIMSP.

Objective To compare proprotein convertase subtilisin/kexin type 9 (PCSK9) levels between premenopausal and postmenopausal women,and to investigate the relationship between serum PCSK9 and metabolic factors.Methods Totally 515 women were enrolled from the study on diabetes of prediction,prevention,and intervention in Nanjing in 2009.Survey,physical examinations,and determination of related metabolic indexes were performed.Serum PCSK9 level was measured by sandwich ELISA.Results Serum PCSK9 level was positively correlated with low density lipoprotein-cholesterol (LDL-C),total cholesterol (TC),triglyceride,fasting plasma glucose,body mass index,waist-hip ratio,and age in women (all P＜0.01).PCSK9 level was significantly lower in premenopausal women than that in postmenopausal women [(58.18 ± 25.44 vs 80.91 ± 33.74) ng/ml,P ＜0.01].Conclusion Higher level of PCSK9 exists in postmenopausal women compared with premenopausal women.The level of PCSK9 is closely correlated with age,TC,and LDL-C.

An S-naproxen（S-NAP）molecularly imprinted monolithic stationary phase（MIMSP）with specific recognition for S-NAP and naproxen（NAP）was prepared by in situ technique,utilizing 4-vinylpridine（4-VP）as a function monomer,ethylene glycol dimethacrylate（EDMA）as a cross-linking agent,and low-polar solvents（toluene and dodecanol）as porogenic solvents.The selectivity of the polymers for S-NAP and NAP was evaluated by high performance liquid chromatography（HPLC）.The binding characteristics were tested by Scatchard analysis.Racemic NAP could be specifically separated to some extent.At the same time,NAP could be separated from ibuprofen under optimized conditions.Scatchard analysis showed that two classes of binding sites existed in the S-NAP-imprinted polymers,with their dissociation constants estimated to be 1.045 and 5.496 μM,respectively.The results demonstrate that S-NAP and NAP can be recognized specifically on the obtained MIMSP.

HK-2 cells were cultured with various concentrations of glucose and insulin for 12,24,48,72 h.Transforming growth factor-?_1(TGF-?_1) protein in supematant was measured by ELISA,while TGF-?_1 mRNA expression was assessed by RT-PCR.Data showed that high concentration of glucose and insulin up-regulated the expression of TGF-?_1 in HK-2 cells through different pathways.

Using the chromosomal DNA of an ice nucleation active bacterium Erwinia ananas 110 as template, an ice nucleation active (ina) gene was amplified by PCR with Taq plusI DNA polymerase. After sequencing and compared with reported ina genes, the cloned gene was identified as a new ina gene and was registered in GenBank at the accession number of AF387802. The new ina gene, named as iceA, has 3921 bp for its coding region, which encodes 1306 amino acids consisting of repetitive segment (R-domain, 1104aa), which is flanked by N-and C-terminal sequences, with 161 aa and 41aa, respectively.

OBJECTIVETo investigate the influence of LY294002 on protein kinase B expression in salivary adenoid cystic carcinoma cells (SACC).

METHODSUsing Western-blot and RT-PCR detected the protein and mRNA level of protein kinase B (PKB) both in cell line, absent and present LY294002. The data were analysed by t-test.

RESULTSThe expression and transcription level of PKB (Ser(473)) in SACC-83 was lower than in SACC-LM (P < 0.05). The expression of PKB (Ser(473)) in SACC cell lines with LY294002 was lower than in SACC cell lines without LY294002 (P < 0.01). The transcription level of PKB showed no difference in SACC cell lines with and without LY294002 (P > 0.05).

CONCLUSIONSIn vitro, the protein expression and transcription level of PKB (Ser(473)) is higher in SACC-LM cell line than in SACC-83 cell line. In vitro, LY294002 can inhibit protein expression of PKB (Ser(473)) in SACC-83 cells and SACC-LM cells.

Carcinoma, Adenoid Cystic ; drug therapy ; enzymology ; Chromones ; pharmacology ; Enzyme Inhibitors ; pharmacology ; Humans ; Morpholines ; pharmacology ; Proto-Oncogene Proteins c-akt ; drug effects ; metabolism ; Salivary Gland Neoplasms ; drug therapy ; enzymology ; Tumor Cells, Cultured

BACKGROUNDOsteosarcoma is one of the most common primary malignant tumors of bone with poor prognosis. TNF-related apoptosis inducing ligand (TRAIL) is a member of the tumor necrosis factor (TNF) cytokine family. TRAIL induces apoptosis in various tumor cell lines but is not found to be cytotoxic to many normal cell types in vitro. We investigated the cytotoxic activity of TRAIL and chemotherapeutic agents, including methotrexate (MTX), doxorubicin (DOX) and cisplatin (CDDP), on established osteosarcoma cell line--S-732.

METHODSOS-732 cells were incubated with chemotherapeutic agents MTX, DOX and CDDP at various peak plasma concentrations (PPC), 0.1PPC, 1PPC and 10PPC, alone or with 100 ng/ml of TRAIL for 24 hours or 48 hours. MTT was used to evaluate the cytotoxic activity of different agents on OS-732. The apoptosis proportion was assayed by flow cytometry. Cellular morphologic changes were observed by phase contrast microscope, scan electron microscope, and transmission electron microscope.

RESULTSThe inhibitory rate was (24.438 +/- 3.414)% with TRAIL of 100 ng/ml for 24 hours. The cells were responsive to DOX and CDDP with a dose-effect relationship (P < 0.05). In OS-732 cells, DOX and CDDP cooperated synergistically with TRAIL when incubated the cells with them for 24 hours (the combined inhibitory rate is (58.360 +/- 2.146)% and (54.101 +/- 2.721)%, respectively). TRAIL alone or drugs alone induced the apoptosis rate was less than 25% (P < 0.05). However, the combination of TRAIL and MTX did not present synergistic effects on OS-732 cells (P > 0.05, compared with TRAIL alone).

CONCLUSIONSOsteosarcoma OS-732 cells were not responsive to TRAIL-induced apoptosis. DOX and CDDP sensitize osteosarcoma OS-732 cells to TRAIL-induced apoptosis. The combination of TRAIL and MTX presented no synergistic effects on killing OS-732 cells.

Antineoplastic Agents ; pharmacology ; Apoptosis ; drug effects ; Bone Neoplasms ; drug therapy ; pathology ; ultrastructure ; Cell Line, Tumor ; Drug Synergism ; Flow Cytometry ; Humans ; Microscopy, Phase-Contrast ; Osteosarcoma ; drug therapy ; pathology ; ultrastructure ; TNF-Related Apoptosis-Inducing Ligand ; pharmacology