OBJECTIVETo explore the preventive effect of Yougui drink on femoral head necrosis in rats under micro CT.

METHODSTwenty-five SD rats were divided into steroid hormone group (group A, 10 rats ), Yougui drink group (group B,10 rats) and normal group (group C,5 rats)with random number table. Endotoxin were injected into abdominal cavity of rats in group A and B for 2 days, methylprednisolone sodium succinate were injected by gluteus for twice a week continued for 6 weeks; group B were gavaged by Yougui drink (veryday for 8 weeks; group C did not do any processing. All rats were killed on the 10th weeks,m icro CT were used to scan femoral head in vitro and preventive effect of Yougui drink (n femoral head necrosis in rats.

RESULTSThere was statistical significance in BMD, BV/TV, Tb.N, Tb, Th, Thb, Sp, BS/TV and DA but no significance in SMI between group A and B. Comparison between A and C, there was significant meaning in BMD, BV/TV, Tb.N, Tb, Th, Tb, Sp, BS/TV, DA and SMI.

CONCLUSIONYougui drink on femoral head necrosis in rats under micro CT has preventive effect from BMD BV/TV, Tb.N, Tb, Th, Tb, Sp, BS/TV and DA.

Animals ; Apoptosis ; Bone Density ; Drugs, Chinese Herbal ; therapeutic use ; Femur Head Necrosis ; diagnostic imaging ; pathology ; prevention & control ; Rats ; Rats, Sprague-Dawley ; X-Ray Microtomography ; methods

Objective To investigate whether Pseudomonas aeruginosa pvdQ( PA2385 ) gene reveals altered antibiotic susceptibility under swarming conditions. Methods The plasmid pME6032 with pvdQ gene was constructed and identified, then transformed into Pseudomonas aeruginosa PAO1 by the electroporation, building pvdQ overexpression strain. Using the same method building pME6032-PAO1 strain.Bacteria were inoculated in LB overnight , measuring the colony diameter of the swarming zone . Results Strains of pvdQ overexpression was successfully constructed by real-time PCR. Comparison of two strains of the swarming motility of change in diameter: The result showed that PAO1 and pvdQ overexpression strains can both improve the antibiotics resistance. Swarmer cells of pvdQ overexpression strain exhibited a 2- to 4-fold increase in antibiotic resistance toward ceftazidime,ciprofloxacin, meropenem and polymyxin B compared to PAO1 on BM2-swarming agar plates. Conclusion pvdQ gene played an important role in elevating the antibiotics resistance, which through prarticipated in the swarmer cell differentiation.

Objective To investigate the effect and mechanism of siHybrids technique on inhibiring the efflux pump gene mexB of Pseudomonas aeruginosa PAO1 in vitro. MethodsTargeting the efflux pump gene mexB of Pseudomonas aeruginosa PAO1 ,we designed and synthesized three siHybrids molecule and one negative scamble siHybrids molecule. Pseudomonas aeruginosa PAO1 were intervened by the siHybrids molecules in 50 nmol/L, respectively. And the experiments were made of control groups[blank and scamble (sc) -001]and intervened groups[siHybrids( si ) -001, siHybrids( si ) -002 and siHybrids(si) -003]of Pseudomonas aeruginosa PAO1. The targeting efflux pump gene mexB mRNA expressions of Pseudomonas aeruginosa PAO1, including all groups, were measured by real-time PCR in 12 h and 24 h after interference in vitro. Further, the minimal inhibitory concentration (MIC) of chlormycetinCP, erythrocin( EM ), levofloxacin ( L-OFLX), ceftazidime ( CAZ), meropenem (MER) to those groups were detected by using Mueller-Hinton broth dilution before and after interference. ResultsThe relative mexB mRNA amounts of Pseudomonas aeruginosa PAO1 intervened by different siHybrids were not much more different from each other after 12 h,but the expression of mexB mRNA of the intervened group ( si-001 ,si-002 ,si-003 ) was much lower than control groups after interference for 24 h. The relative mexB mRNA amounts, comparing 12 h with 24 h, we would find the blank control and negative control submit escalating trend. And the intervened control ,three different siHybrids were all with a downward tendency. However, in presence of 50 nmol/L siHybrids, the minimal inhibitory concentration(MIC) of CP, EM, L-OFLX, CAZ, MER to those controls were not much more different before and after interference. Conclusion On level of the mRNA expressions, siHybrids could inhibit the efflux pump gene mexB of Pseudomonas aeruginosa PAO1 in vitro, and within 24 h would be able to function effectively. Further, the effect was time-dependent.

ObjectiveTo investigate the alteration of MexB protein expression by plasmid containing siRNA template strand was transformed into Pseudomonas aeruginosa.Methods siRNA molecules specifically against mexB were designed and ligated into pGPU6/GFP/Neo vector to construct the recombinant plasmid pGPU6/GFP/Neo-siRNA.MexB gene was cloned into expression vector pET22b+ to construct plasmid pET22b+/mexB,the recombinant expression plasmid was transformed into E.coli BL21 (DE3)plysS and protein MexB was induced to express,then purified protein MexB was used to prepare specific antibodies in rabbits.The plasmids with siRNA molecules specifically against mexB were transformed into wild type strain,clinical multiresistant strain and mexB overexpression strain of Pseudomonas aeruginosa by electroporation respectively,and the changes of the expression of MexB were detected in 8,12,24 h respectively by Western blot.ResultspGPU6/GFP/Neo-siRNA was constructed successfully.Protein MexB was expressed successfully and the rabbit polyclonal antibodies against MexB was prepared well.The gene silence of mexB by siRNA molecules was effective in the three strains of Pseudomonas aeruginosa,but it depended on the silencing time.ConclusionThe expression of MexB was reduced in 8 h and 12 h,but in 24 h,the expression was unchanged.

OBJECTIVETo assess the outcome of phacoemulsification-intraocular lens (IOL) implantation combined with viscocanalostomy (P-C group), compared with that of phacoemulsification-IOL implantation combined with trabeculectomy (P-T group).

METHODSCombined phacoemulsification with corneal incision, foldable intraocular lens implantation and viscocanalostomy was performed in 21 eyes of 19 cataract patients with primary open-angle glaucoma. All patients were followed up for 3 - 6 months.

RESULTIntraocular pressure (IOP) was significantly lower in both P-C group and P-T group (P=0.000). There was no statistically significant difference between two groups. Visual outcome was similar in both groups. Complications of P-C group included Descemet's membrane puncture in 2 eyes, Schlemm's tube puncture in 2 eyes and IOP spikes in 3 eyes (at 24 hours postoperatively). The P-C group experienced significantly less inflammation than the P-T group.

CONCLUSIONPhacoemulsification-IOL implantation combined with viscocanalostomy is a safe and effective surgery, with lower complicatin rate and easier ambulatory care.

Aged ; Aged, 80 and over ; Female ; Filtering Surgery ; methods ; Glaucoma, Open-Angle ; surgery ; Humans ; Intraocular Pressure ; Lens Implantation, Intraocular ; Male ; Middle Aged ; Phacoemulsification ; Postoperative Complications ; etiology ; Visual Acuity

Objective To observe the methylation and expression of 14-3-3 sigma gene in human breast cancer.Methods 40 breast cancer tissues and 18 mammary gland tissues with benign lesions were analyzed by methylation specific PCR(MSP),RT-PCR,and Western-blot(WB)so as to detect the methylation status and expression of 14-3-3 sigma mRNA or protein.Results Methylation of 14-3-3 sigma gene was detectable in 85%(34/40)of patients with breast cancers.RT-PCR showed negative in 12.5% of breast cancers(5/40),WB also indicated that 14-3-3 sigma was not detected in 32 of 40 breast carcinomas (80%).Furthermore,both RT-PCR and WB were negative in 30 of 34 positive cases by MSP.While methylation of 14-3-3 sigma was not detectable and its expression was demonstrated by RT-PCR and WB among 18 cases of benign breast diseases.These evidences proposed that methylation of 14-3-3 sigma gene had great relevance with its silence.Conclusion Methylation and loss of expression in 14-3-3 sigma gene were high frequent events in breast cancers.And methylation of 14-3-3 sigma gene might be related to its loss.

OBJECTIVETo investigate the role of activated hepatocyte growth factor (HGF) in apoptosis of hepatic stellate cells (HSCs) and in modulating the Rho signaling pathway.

METHODSHSCs were divided into the following groups: blank control, consisting of HSCs without treatment; two treatment controls, consisting of HSCs exposed to exogenous HGF at 50 ng/ml and HSCs exposed to exogenous HGF activator (HGFA) at 70 ng/ml; three experimental groups, consisting of HSCs exposed to both exogenous HGF and HGFA, HSCs pre-incubated with the HGF inhibitor c-met at 500 ng/ml for 6 hours and then exposed to exogenous HGF and HGFA, and HSCs pre-incubated with the Rho pathway inhibitor Y-27632 at 10 ng/ml and then exposed to exogenous HGF and HGFA. Activation status of the cultured HSCs was determined by change in expression of alpha-smooth muscle actin (SMA). The optimal intervention concentration of Y-27632 was determined by MTT assay. The apoptotic status of HSCs was determined by flow cytometry. Expression of the HGF-alpha chain was detected by immunofluorescence. The expression of RhoA was evaluated by PCR (for mRNA) and by immunohistochemical staining and Western blot analysis (for protein).

RESULTSExposure to 10 mumol/L Y-27632 led to obvious growth inhibition of HGF + HGFA-induced HSCs, compared with the other concentrations tested (P less than 0.05). HGF + HGFA induced the expression of the HGF-alpha chain in a time-dependent manner (P less than 0.01); however, the increases in expression of HGF-alpha chain induced by HGF alone and HGFA alone were not significantly different from the level in the blank controls (P more than 0.05). Exposure to HGF alone and HGFA alone led to a time-dependent increase in apoptosis (24 h, 48 h, 72 h) but exposure to HGF + HGFA led to the highest levels of apoptosis (P less than 0.05). Exposure to HGF + HGFA led to a time-dependent decrease in RhoA mRNA and protein expression (P less than 0.01).

CONCLUSIONActivation of hepatocyte growth factor promotes apoptosis of hepatic stellate cells by suppressing RhoA expression and down-regulating the Rho signaling pathway.

OBJECTIVETo investigate the frequency of JAK2V617F mutation in Chinese patients with chronic myeloproliferative neoplasms (MPN) and to study the relationship between JAK2V617F mutation and clinical characteristics.

METHODSJAK2V617F mutation was screened by allele-specific polymerase chain reaction (AS-PCR).

RESULTSJAK2V617F mutation was detected in 277 of the 412 patients with MPN. The frequency of JAK2V617F mutation was similar among essential thrombocythemia (ET), idiopathic myelofibrosis (IMF) and chronic myeloproliferative disorders-unclassified (MPD-U) (P > 0.05), but it was significantly lower than that in polycythemia vera (PV) (P < 0.05). The presence of JAK2V617F was found to be significantly correlative with advanced age at diagnosis (P < 0.01) and with higher hemoglobin levels and higher leukocyte counts (P < 0.05). Significant difference was found in complication of vascular events between JAK2V617 positive and negative patients (P < 0.05). JAK2V617F positive MPD-U patients were more prone to progress into typical MPN compared with JAK2V617F negative MPD-U patients. The association between abnormal karyotype and JAK2V617F was not found in cytogenetical analysis of 301 patients.

CONCLUSIONThe presence of JAK2V617F in MPD-U is associated with the disease development. There is a correlation between JAK2V617F mutation in MPN and advanced age, higher leukocyte counts, hemoglobin level and vascular events.

Adolescent ; Adult ; Age Factors ; Aged ; Aged, 80 and over ; Female ; Follow-Up Studies ; Hemoglobins ; metabolism ; Humans ; Janus Kinase 2 ; genetics ; Leukocyte Count ; Male ; Middle Aged ; Mutation ; Myeloproliferative Disorders ; blood ; complications ; genetics ; Polycythemia Vera ; blood ; complications ; genetics ; Primary Myelofibrosis ; blood ; complications ; genetics ; Thrombocythemia, Essential ; blood ; complications ; genetics ; Thrombosis ; etiology ; Young Adult

OBJECTIVETo investigate the diagnostic value of ischemia-modified albumin (IMA) for patients with acute coronary syndrome (ACS).

METHODSWe detected the IMA levels by albumin cobalt-binding (ACB) test and observed its dynamic changes in 492 patients with ACS, 74 patients with high blood pressure, 78 patients with viral myocarditis (VMC), 395 patients with acute chest pain (133 patients with acute ACS and 262 follow-up patients due to chest pain), 68 patients underwent percutaneous coronary intervention (PCI) and 830 healthy controls. Cardiac troponin I (cTnI) levels were assayed and electrocardiogram (ECG) recorded in patients with ACS.

RESULTSThe optimal diagnostic cutoff point for IMA in this study population was found to be 0.45 ABSU by ROC analysis. The IMA level (ABSU) in ACS group (0.55 +/- 0.11) was significantly higher than that in VMC group (0.38 +/- 0.11) and IMA levels in ACS and VMC groups were both higher than that in control and high blood pressure groups (0.34 +/- 0.08 and 0.35 +/- 0.08, all P < 0.05). IMA levels and the positive rates in patients with ACS were significantly higher (0.54 +/- 0.12 vs 0.44 +/- 0.12, 77.4% vs 39.3%, all P < 0.01) than those in chest pain follow-up group. In 133 patients with ACS, positive rate for IMA was significantly higher than that for cTnI within 1 h of admission (82.0% vs 40.6%, P < 0.01), and was similar at 6 - 24 h after admission (96.2% vs. 95.5%, P > 0.05). In 72 patients presenting to the emergency center within 3 h of acute chest pain and with negative cTnI, positive rate for IMA was 86.1% and for ECG 72.2%, the sensitivity for ACS diagnosis rised to 93.1% with both methods. The IMA leve was higher immediately after PCI than that before PCI (P < 0.05). IMA levels peaked 1d after hospitalization, then decreased gradually and returned to normal 14 days later.

CONCLUSIONSIMA was a useful biochemical marker for the early diagnosis of ACS.

Acute Coronary Syndrome ; diagnosis ; Adult ; Aged ; Biomarkers ; Case-Control Studies ; Female ; Humans ; Male ; Middle Aged ; Myocardial Ischemia ; metabolism ; Serum Albumin ; analysis ; Troponin I ; blood

The purpose of this study was to investigate the clinical value of plasma thrombomodulin (PTM) in different diseases or in different severity or complications of diseases, PTM in 979 patients and 60 healthy controls was determined by ELISA method. The results showed that the PTM level in the control group was 20.40 +/- 7.72 microg/L, there was no difference in sex and ages. In chronic primary glomerular disease, the PTM level in chronic renal failure (CRF) group was higher than that in non-CRF group (P < 0.01). PTM level > 70 microg/L was defined as its positive criterion. The sensitivity, specificity and positive predictive value in PTM were 85.7%, 82.4% and 77.8% respectively. The PTM level in septemia group was higher than that in non-septemia group (P < 0.01), the sensitivity, specificity and positive predictive value were 86.6%, 89.5% and 76.5% respectively (> 50 microg/L as its positive criterion). With respect of multiple trauma, the PTM level in multiple organ failare (MOF) group was higher than that in non-MOF group (P < 0.01), while the sensitivity, specificity and positive predictive value were 77.8%, 77.3% and 73.7% respectively (> 40 microg/L as its positive criterion). For systemic lupus erythematosus (SLE), the PTM level in the patients with albuminuria was higher than that in the patients without albuminuria (P < 0.01), and the sensitivity, specificity and positive predictive value were 77.8%, 92.3% and 93.3% respectively (> 35.54 microg/L as its positive criterion). For diabetes, the PTM level in complication group was higher than that in group without complications, the sensitivity, specificity and positive predictive value were 53.4%, 97.1% and 98.6% respectively (> 35.54 microg/L as its positive criterion). The PTM level in microangiopathy group was higher than that in macroangiopathy group (P < 0.01). The sensitivity, specificity and positive predictive value were 71.2%, 97.1% and 97.9% respectively. Acute leukemia (AL) and multiple myeloma (MM) had higher PTM level and PTM level was extremely high when renal failure developed (P < 0.01). As compared the acute stage with the restoration stage in stroke, pre-chemotherapeutics with post-chemotherapeutics in AL and MM, and pre-operation with post-operation in cancer, the PTM level was connected with clinical development. The PTM level in the patients with microangiopathy was higher than that in the patients with macroangiopathy (P < 0.01). The defined PTM level was higher than its normal upper limit as PTM positive criterion in microangiopathy diseases, the sensitivity, specificity and positive predictive value were 77.7%, 71.2% and 75.6% respectively. It is concluded that PTM level is a good criterion in evaluating the microangiopathy, and PTM is also a valuable indicator in prediction or assessment of the severity of diseases, or evaluation of therapeutic effectiveness.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Enzyme-Linked Immunosorbent Assay ; Female ; Humans ; Kidney Failure, Chronic ; blood ; Male ; Middle Aged ; Multiple Organ Failure ; blood ; Predictive Value of Tests ; Prognosis ; Sensitivity and Specificity ; Sepsis ; blood ; Severity of Illness Index ; Thrombomodulin ; blood