Objective To compare the bony fusion in different degrees of vertebral plate hinge fracture after single open-door cervical expansive laminoplasty with centerpiece mini-plate fixation.Methods The clinical data of 79 patients received the unilateral simple open-door cervical expansive laminoplasty with centerpiece mini-plate fixation from January 2010 to December 2012 were retrospectively analyzed.The vertebral plate hinge fracture was divided into incomplete fracture and complete fracture according to thepostoperative CT scan.The complete fracture was divided into four types:type Ⅰ in which there was no displacement;type Ⅱ in which there was mild to moderate displacement;type Ⅲ in which there was complete displacement or separated; type Ⅳ in which there was hinge' s collapse into cervical canal.The hinge fracture healing was observed and the difference of different types of fracture healing rate was compared.Results Follow-up of 12-45 (21.2 ± 5.6) months.CT scan found 395 segments 1 week after the operation,vertebral plate hinge complete fracture accounted for 58.2％ (230/395).And type Ⅰ accounted for 66.1％ (152/230),type Ⅱ accounted for 25.7％(59/230),type Ⅲ accounted for 6.5％(15/230) and type Ⅳ accounted for 1.7％ (4/230).The fusion rate of incomplete fracture at 6 months after the operation was higher than that complete fracture [97.6％(161/165) vs.80.9％(186/230)],there was significant difference (P＜ 0.05).The fracture rate in different types of complete fracture at 3,6 months after the operation had significant difference (P ＜ 0.05).Type Ⅲ fracture had the lowest healing rate.Conclusion Type Ⅰ fracture is the major type for vertebral plate hinge complete fracture,complete fracture get a relatively bad bony fusion and type Ⅲ fracture has the lowest healing rate.

Objective To investigate multiparametric immunophenotypic features in patients with acute myelocytic leukemia(AML)-M_2 bearing AML-1/ETO gene rearrangements and its predicting value.Methods A multiparametric flow cytometry was used in the study of phenotypic characterization of the subtype of AML.Immunophenotype of 30 patients with AML(M_2/ETO~+)was analyzed by fluorescence in situ hybridization(FISH).The results were compared with 36 patients of AML-M_2 with AML-1/ETO~- (M_2/ETO~-)and 34 acute promyelocytic leukemia(APL)patients.Results There were a population. 15.89%-68.53% the blast cell and a population of more differentiated and heterogeneous myeloid cells in the marrow of 30 patients with M_2/ETO~+.The blast cells had a myeloid phenotype(CD_(33),CD_(13)and MPO) and showed a characteristic pattern of antigen expression.The fluorescent intensity of CD_(33)in patients with M_2/ETO~+ was less than in patients with M_2/ETO~-and APL [ mean fluorescent intensity(MFI):98?75 v. 244?184 and 845?523,both P

Objective To analyze the results of treatment of complicated tibial plateau fractures with open reduction and internal fixation with bilateral plates .Methods 29 elder patients with C type tibial platform fractures underwent internal fixation with bilat-eral plates and bone grafting .Fixation with bilateral plates was performed during operation with dynamic compression plate or 1/3 Tubular steel plate placed medially and the dissection plate or LISS system ones inserted laterally after the underlying separation . Meanwhile ,sufficient bone grafting during operation could effectively support reduction of articular surface .Results All patients were followed up of an average of 13 .8 ± 2 .43 months .According to Rasmussen score standard ,the excellent and good rate was 82 .7% .There was significant difference of TPA and PA between postoperation and postoperation one year later .Conclusion It is a simple and effective method to treat complicated elder tibial platform fractures with bilateral plates .It will improve the effect and re-duce complications significantly to perform sufficient bone grafting intraoperatively ,and make the drainage unobstructed and do the early functional exercises postoperatively .

Objective To explore clinicopathological features and prognosis of juvenile granulosa cell tumor (JGCT).Methods Patients were divided into JGCT group (n=10) and the adult granulosa cell tumor (AGCT) group (n=10).The tumor samples were examined by HE and immunohistochemical methods.Results Age of JGCT group ranged from 7-31 years (average 20.5 years);90% occurred before 30 years old.Diameter of the tumors ranged from 5.5 cm to 15.0 cm,average 9.8 cm.Characteristic features included nodular arrangement,irregular formation of follicles containing muein and luteinization, atypical hyperplasia of ceils and high mitotic activity.Nuclei grooved and Call-Exner bodies were absent or rare.Survival rate was 90% in 5 years.Age of AGCT group ranged from 14-74 years (average 45.1 years);AGCT occurred mostly in over 40 years old.Atypical hyperplasia of cell,mitotic activity and luteinization were absent or rare.Nuclei grooved and eall-Exner bodies were common.Survival rate was 100% in 5 years.Immunohistochemical staining were positive for p53 at 70%,PCNA at 90% in 10 cases of JGCT and p53 at 10%,PCNA at 20% in 10 cases of AGCT(P

Objective To study the role of Foxp3 + CD4 + CD25 + regulatory T cells(Foxp3 + CD4 + CD25 + Tregs) and Foxp3mRNA in pathogenesis of passive transferred myasthenia gravis(PTMG) by detecting their expression in a PTMG model.Methods Sixteen C57BL/6 young female mice were divided into model group and control group.A PTMG model was established by injecting Ringer's solution containing 1.0 mg/kg mAb35 into abdominal cavity.Mice in control group were injected with Ringer's solution not containing mAb35.Levels of CD4 + CD25 + T cells and Foxp3 + CD4 + CD25 + Tregs in spleen cells were measured by flow cytometry.Expression of Foxp3 mRNA in spleen cells was detected by real-time fluorescent quantitative polymerase chain reaction(RT-FQ-PCR).Serum level of interleukin-2 and interferon-? was detected by ELISA.Results The ratio of CD4 + CD25 + T cells and CD4 + T cells was higher in model group(8.82 ? 0.74)% than in control group(9.89 ? 0.88)%(P

Objective To investigate the relations between adiponectin(APN) and lipoprotein associated phospholipase A2 (LP‐PLA2) with the development and progress of essential hypertension .Methods 60 patients with essential hypertension were collect‐ed and divided into 3 groups of the hypertension grade 1 ,2 ,3 groups according to the levels of blood pressure ,20 cases in each group .Contemporaneous 20 healthy controls were selected .The peripheral venous blood samples were collected from the cubital vein and the serum levels of APN and LP‐PLA2 were measured by ELISE .The related biochemical indicators were simultaneously detected .Results The serum APN levels in the hypertension grade 1 ,2 ,3 groups were significantly lower than that in the control group ,moreover which in the hypertension grade 3 group was significantly lower than that in the hypertension grade 1 group(P<0 .05);on the contrary ,serum levels of LP‐PLA2 in the hypertension grade 1 ,2 ,3 groups were significantly higher than that in the healthy control group ,moreover which in the hypertension grade 3 group was obviously higher than that in the hypertension grade 1 group(P<0 .05);serum APN was significantly negatively correlated with LP‐PLA2(r= -0 .772 ,P<0 .05) .Conclusion Serum levels of APN and LP‐PLA2 are closely related with the development and progress of essential hypertension .

Objective To investigate the molecular characteristics of human immunodeficiency virus/acquired immune deficiency syndrome (HIV/AIDS) patients receiving antiretroviral therapy (ART) in Guizhou Province. Methods Using a convenience sampling strategy, 8 583 samples were collected in Guizhou and an investigation was conducted including face-to-face questionnaire interview and HIV testing. Results 1 511 cases failed in HIV suppression (viral load, VL>1 000 copies/ml). 1 410 cases (93.31%) were successfully genotyped with HIV pol gene, among which 51.42% were genotyped as CRF01_AE, 26.67% as CRF07_BC and 16.1% as CRF08_BC. Conclusion The subtype changes caused by HIV gene mutation should precede the changes of main transmission routes of HIV through the analysis in recent years. Timely monitoring the changes of HIV subtypes can be one of the main bases for the prevention and control of AIDS.

Acupuncture Therapy ; California ; International Cooperation ; Medicine, Chinese Traditional ; methods ; trends ; United States

OBJECTIVETo study the selective dilatation effects of iptakalim (Ipt) on basilar and pulmonary arterioles, and endothelial cell function of these arterioles in hypoxic rats.

METHODSSD male rats were divided into 2 groups:control and hypoxic group fed in normobaric hypoxic environment (O2 7.8%, 8 h). Arteriole rings about (204 + 5) pm were isolated and the tension of hypoxic arterioles pre-contracted by 6 nmol/L endothelin-1 (ET-1) was observed with wire myograph system model (DMT 610 m). The relaxing response of hypoxic arterioles induced by different concentration of Ipt were detected and endothelial activity was also tested by acetylcholine.

RESULTS10(5) mol/L acetylcholine (ACh)-mediated vasodilatation of basilar and pulmonary arterioles was greatly reduced in the hypoxic group than those in control group (P < 0.05). Compared with normal group, a novel ATP-sensitive potassium channel opener Ipt at the concentration ranging from 10(-11) mol/L to 10(3) mol/L, caused stronger dose dependent vasodilatation on hypoxic pulmonary arterioles, and there was no significant difference between control and hypoxic basilar arterioles.

CONCLUSIONThe endothelial function of basilar and pulmonary arterioles was damaged under hypoxic state, and Ipt selectively increased dilatation effects on hypoxic pulmonary arterioles, but not on hypoxic basilar arterioles which could improve high altitude pulmonary edema pathological state and be the novel drug in the treatment of pulmonary hypertension.

Acetylcholine ; pharmacology ; Altitude ; Altitude Sickness ; physiopathology ; Animals ; Arterioles ; drug effects ; Dilatation ; Endothelin-1 ; pharmacology ; Hypoxia ; KATP Channels ; drug effects ; Male ; Propylamines ; pharmacology ; Rats ; Vasodilation ; Vasodilator Agents ; pharmacology

OBJECTIVETo explore the mechanisms involved in the ligustrazine alleviation of the pulmonary artery hypertension (PAH) in patients of chronic obstructive pulmonary disease (COPD) associated with chronic cor pulmonale (CCP) during exacerbation.

METHODSSeventy patients of COPD and CCP with acute exacerbation were randomly and equally divided into control group and treatment group. The control group received standard treatment with antibiotics, antiasthmatic and expectorant medications, and oxygenation; and the ligustrazine treatment group received ligustrazine treatment (80 mg/d; i.v.; for 2 weeks) in addition to the standard treatment. Before and at the end of 2 week treatment, the clinic responses of the two regimens were evaluated, plasma levels of endothelin-1 (ET-1) and nitric oxide (NO) were determined; arterial oxygen partial pressure (PaO2, mean pulmonary arterial pressure (mPAP), outflow tract of right ventricle (RVOT), and internal diameter of right ventricle (RV) were measured.

RESULTSGood clinic benefits were achieved in both the standard and ligustrazine regimens, plasma level of ET-1, values of mPAP, RV and RVOT decreased significantly, plasma level of NO and PaO2 values decreased (all P < 0.01 vs pre-treatment to all parameters). Compared with the control group, ligustrazine greatly enhanced the clinic efficacy from 77.1% to 97.1% (P < 0.05), and also resulted in more significant changes of all these parameters (P < 0.01 vs control group for all parameters). For both groups, the levels of plasma ET-1 were positively correlated with values of mPAP, RVOT, and RV (r = 0.710, 0.853, and 0.766, respectively, all P = 0.000), and negatively correlated with plasma NO and PaO2 (r = - 0.823, and - 0.752, respectively, all P = 0.000).

CONCLUSIONLigustrazine is effective in treating pulmonary artery hypertension during acute exacerbation of COPD and CCP in patients from the plateau area. The observed changes in the plasma levels of NO and ET-1 in response to ligustrazine treatment suggest that ligustrazine may act through the selective effect on pulmonary blood vessels to enhance the synthesis and release of NO and suppress those of ET-1 from lung vascular endothelial cells, thus reducing pulmonary artery pressure and decreasing pulmonary arterial hypertension.

Altitude ; Blood Gas Analysis ; Chronic Disease ; Endothelin-1 ; blood ; Humans ; Hypertension, Pulmonary ; drug therapy ; Nitric Oxide ; blood ; Pulmonary Artery ; physiopathology ; Pulmonary Disease, Chronic Obstructive ; drug therapy ; Pyrazines ; therapeutic use ; Respiration