Objective To establish an HPLC method for content determination of Ginsengnoside Rg1, Ginsengnoside Rb1 and Notoginsenoside R1 inTianqi Tongjing Capsule.Methods An Agilent ZORBAX SB-C18 column (4.6 mm × 250 mm, 5μm) was used. The mobile phase was composed of acetonitrile (A) and water (B) with gradient elution (0-20 min, 19%→21%A;20-50min, 21%→36%A) at a flow rate of 1.0 mg/mL;the wavelength of detector was 203 nm;the temperature of the column was 25℃.Results The calibration curves of Ginsengnoside Rg1, Ginsengnoside Rb1 and Notoginsenoside R1 showed good linearity within the range of 0.442 4-3.981 6μg (r2=1.000 0), 0.524 8-3.673 6μg (r2=0.999 4) and 0.203 2-1.016μg (r2=0.999 2), respectively. The average recoveries (n=9) were 99.49%, 99.02% and 99.98%, and RSD were 2.44%, 2.45% and 2.14%, respectively.Conclusion The method is simple, reliable, rapid and with good repeatability, and can effectively control the quality ofTianqi Tongjing Capsule.

Objective To investigate the influence of individualized exercise intervention on blood glucose of community patients with type 2 diabetes mellitus. Methods Self-control study was carried out in 50 community patients with type 2 diabetes mellitus. Individualized exercise intervention were given to them and the effect was observed. Results After 3 months of intervention the fasting plasma glucose and 2hs postprandial blood glucose glucose reduced after intervention compared with those before intervention(P＜0.05＝.Conclusion Individualized exercise intervention could control the blood glucose of community patients with type 2 diabetes mellitus and turned out to be an important managing measures for community diabetes mellitus patients.

OBJECTIVE: To explore the diagnostic value of brain natriuretic peptide (BNP) level in patients with sepsis of blood-stasis syndrome. METHODS: The prospective method of clinical diagnostic test and evaluation principles of diagnostic test were applied. One hundred and seventy-four patients with sepsis were divided into two groups: blood-stasis syndrome group and non blood-stasis syndrome group. The levels of serum BNP in two groups were detected. RESULTS: The level of BNP in sepsis patients was related to blood-stasis syndrome (P<0.01). BNP cut-off level was 150 ng/L, sensitivity was 85.3%, specificity was 81%, the maximum value of Youden index was 0.663, and the area under the receiver operating characteristic curve (ROC) value was (0.886+/-0.025). CONCLUSION: BNP can be used as an objective index of blood-stasis syndrome diagnosis for sepsis, and BNP with boundary value of 150 ng/L is an optimal biological index.

Auditory Cortex ; metabolism ; Humans ; Magnetic Resonance Spectroscopy

Objective To explore the clinicopathological features and safety of surgical treatment in aged patients with primary hepatocellular carcinoma (HCC). Methods The clinical data of 316 patients with HCC undergoing hepatectomy in our hospital from December 2005 to December 2008 were retrospectively analyzed. The patients were divided into an aged group (≥60 years,n= 72) and a non-aged group (＜60 years, n=244). The clinicopathological data and surgical outcomes were compared between the 2 groups. Results The aged group presented less hepatitis B surface antigen (HBsAg) positive rates and vascular invasion and a lower alpha-fetoprotein (AFP) value when compared with the non-aged group (P＜0.05). No significant differences were found in the extent of hepatectomy, operative duration, intraoperative blood loss, blood transfusion requirements, incidence of postoperative complication and mortality rate between the 2 groups (P＞0.05). Conclusion The aged patients with HCC were characterized by less HBsAg positive rate, vascular invasion and lower alphafetoprotein (AFP) value. Surgical resection for HCC in aged patients is safe. The attitude toward surgical treatment of aged patients with HCC should be active.

BACKGROUND: Poly hydroxybutyrate-hydroxyvalerate (PHBV) has been used to construct bioprosthetic heart valve. It remains unclear whether it can be used as membrane for guided bone regeneration. OBJECTIVE: To investigate the biocompatibility of PHBV membrane and evaluate its efficiency of promoting bone regeneration in vivo. METHODS: Effects of 100%, 75%, 50%, 25% PHBV extract solution on relative growth rate of dog bone marrow mesenchymal stem cells were measured by MTT method and cytotoxicity of the biomaterials was evaluated. Bone defects were made on distal bilateral tibias and treated with PHBV membrane; the proximal bilateral tibias undergoing reduction of periosteal flap and were used as control. RESULTS AND CONCLUSION: The toxicity gradation of PHBV membranes was grade 0-1. That is, they were not toxic to growth and proliferation of bone marrow mesenchymal stem cells. New bone regeneration was observed in the defects covered with PHBV membranes at week 2 post-surgery. The defects covered with PHBV membranes were filled with mature bone at week 12 post-surgery. The bone repair in experimental groups was earlier and better than that in control groups. Results demonstrated that PHBV membrane, which has no cytotoxicity to mesenchymal stem cells in a wide range of extract concentration, could be a promising biopolymer membrane for guided bone regeneration.

Objective To discuss the significance of acoustic rhinometry(AR) and rhinomanometry(RM) in the evaluation of surgical treatment of nasal septal deviation.Methods Fifty-one patients of nasal septal deviation were recruited,and seventy-two nasal cavities were tested(twenty-one patients with narrowing of double sides).Visual analogue scale(VAS) was used to estimate the degree of nasal obstruction.AR and RM were used to obtain the data of nasal airway resistance(NAR),nasal cavity 0-5cm volume(NCV0-5) and nasal minimal cross-sectional area(NMCA).The data were used to assess the airflow function of nasal cavity.Each patient was tested at the time both before surgery and 12 weeks after surgery.The pre-and post operative data were used to calculate paired t-test by SPSS 16.0,and to disclose the correlation among ?NCV,?NMCA,?NAR and ?VAS.Results The preoperative data showed that NCV0-5 was 4.07?0.91cm3,NMCA 0.33?0.08cm2,NAR 1.14?0.34kPa?s?L-1,and VAS 7.36?1.23;and the postoperative data showed that NCV0-5 was 7.29?0.68cm3,NMCA 0.56?0.08cm2,NAR 0.35?0.12kPa?s?L-1,and VAS 1.14?0.91.Significant differences existed in NCV0-5,NMCA,NAR and VAS(P

Objective To construct the eukaryotic expression vector for IL-37 fused with the enhanced green fluorescent protein (EGFP) and express the fusion protein IL-37-EGFP in 293T cells. Methods The IL-37 and EGFP gene were amplified by PCR, respectively. Then the gene fragments of IL-37 and EGFP were in-serted into the pcDNA3.1 vector to construct the recombinant eukaryotic expression vector pcDNA3.1/IL-37-EGFP. The pcDNA3.1/IL-37-EGFP recombinant expression vector was identified by enzymatic digestion , DNA sequencing, PCR identification. Then the recombinant plasmid pcDNA3.1/IL-37-EGFP was used to transfect 293T cells , the expression of EGFP in 293T cells was detected by fluorescence microscope , the expression of IL-37 in 293T cells was detected by RT-PCR and Western blot. Results The results of enzymatic digestion and DNA sequencing showed that the fusion gene of IL-37 and EGFP linked with (G4S)3 was cloned correctly into pcDNA3.1 vector. The green fluorescence was observed in 293T cells transfected with pcDNA3.1/IL-37-EGFP by fluorescence microscope. RT-PCR and Western blot showed that the expression with high level of IL-37 mRNA and IL-37 protein in 293T cells transfected with pcDNA3.1/IL-37-EGFP , respectively. Conclusion The recom-binant eukaryotic expression vector for IL-37 fused with EGFP, pcDNA3.1/IL-37-EGFP, was constructed suc-cessfully and expressed effectively in 293T cells.

AIM:To investigate the effect of donor bone marrow derived dentritic cell (DC) treated with B7 - 1, B7 - 2 antisense oligonucleotide on mouse heart allografe survival time and its mechanism. METHODS: There were 7 groups of C57BL/10J (B10) mouse bone marrow DCs which were treated by 400 nM antisense oligonucleotide target to B7 -1, B7 -2 mRNA (AS B7- 1/2), B7- 1 mismatch oligo control ,B7- 2 mismatch control(mASB7- 1/2), lipofeetamine only and non-treatment, respectively. Each group of DC were named as ASB7- 1 DC, ASB7- 2 DC, mASB7 - 1 DC, mAS B7 - 2DC, and Lipo DC, respectively. RESULTS: Flow cytometer results shown that AS B7- 1/2 can inhibit B7- 1 (CD80)and B7- 2 (CD86) molecule express on DC surface, while control groups have no effects. To observe their tolerogenicity in mouse cardiac allograft model, B10→C3H heterotopic heart transplantation were performed. Recepients were received 2 x 106 of DC injection 7 days before transplantation. Results showed that both AS B7 - 1 DC and AS B7 - 2 DC can prolong mouse cardiac allograft survival time to (18.6 + 0.89) days and (23.67 + 10.73) days, respectively, compared with IL - 4 DC [ (6.22 + 0.97) days ( P < 0.01 ) ]. Two mismatch control groups can slightly prolong while oligo DC has no effect. For understanding its mechanism, each group of DC was used as stimulator to stimulated C3H spleen T cell. Results suggested that AS B7 - 1DC and AS B7 - 2 DC had less allo - stimulate function, including MLR and generation CTL and IL - 2 production than IL - 4 DC but control groups have no effect. CONCLUSION: Donor bone marrow derived DC treated with AS B7 - 1 oligo and AS B7 - 2 oligo expressed lower level of CD80 and CD86, respectively. These cells can induce allogeneic T cells anergy in vitro and markedly prolong mouse heart allograft survival time in vivo.

BACKGROUND: Bone implant materials have been previously reported to be not coincident between inducing velocity of new bone formation and degradation velocity itself; therefore, the materials could not be completely degraded but formed into foreign substances. A novel artificial bone implant material, characterizing by well biocompatibUity, biodegradation, and biomechanics, is focused in biomaterials field recently.OBJECTIVE: To study the biodegredation of a novel bionic scaffold with nanostructure, i.e., poly (3-hydroxybutyrate-co-3-hydroxyvalerata)/sol gel bioactive glass (PHBV/SGBG), in vivo. DESIGN, TIME AND SETTING: A controlled animal experiment was performed at Animal Experimental Center of the Third Hospital affiliated to Sun Yat-sen University from May 2005 to October 2006. MATERIALS: PHBV/SGBG was provided by Materials Institute of South China University of Technology, and ethylene oxide was sterilized for preparation.METHODS: Eight hybrid dogs were used to make models of Ubia diaphyseal defect, having two defects on both left and right sides. The tibia diaphyseal defects at proximal part were considered as the control group, and those were not performed with any treatment; while, the tibia diaphyseal defects at distal part were considered as the experimental group, and PHBV/SGBG was fully implanted into the defect regions. Every two dogs were sacrificed at different time points of 2, 4, 8, and 12 weeks, respectively. MAIN OUTCOME MEASURES: In vivo biodogradation and osteogenesis were monitored under optic microscopy and electron microscope.RESULTS: The PHBV/SGBG scaffold had well biodegradation and rapid degradation velocity, and it began to degrade at two weeks after operation. The PHBV/SGBG scaffold was almost replaced by new bone tissues at 8 weeks after operation and completely degraded at 12 weeks after operation. In addition, the PHBV/SGBG scaffold had a good ability to induce new bone formation from edge to center. Whereas, surface depression in the defect region was still visible in the control group, cortical bone was not formed in embedded region of soft tissue; furthermore, electron microscopy demonstrated that calcium salt deposition was increased in the bone defect region, and the structure was tight; however, the defect was not completely repaired, and some voids were still visualized.CONCLUSION: The novel bionic scaffold, PHBV/SGBG, degrades fast in vivo to generate new bone tissues. The new bone regenerate accompanied by a fitting degradation of the novel bionic scaffold that achieve complete repair.