Arterial Occlusive Diseases ; diagnosis ; etiology ; Coronary Disease ; complications ; diagnosis ; Humans ; Lower Extremity ; blood supply ; Male ; Middle Aged

Humans ; Root Resorption

Objective To evaluate a serf-designed diagnostic protoeol which can early detect a femoral neck fracture for patients with a femoral shaft fracture. Methods From September 2005 to June 2007, a self-developed protocol was used to detect an ipsilateral femoral neck fracture for all the patients with femoral shaft fracture who had sought treatment in our department. This protocol consisted of anteroposterior plain radiography of internal rotator, intraoperative fluoroscopy of the hip, a fine (2 mm) cut computed to-mographic scan through the femoral neck, postoperative anteroposterior and lateral plain radiography of the hip in the operating room prior to awakening the patient, at the time of follow-up anteroposterior and lateral plain radiography of the hip in the presence of hip pain. The diagnostic effects of the protocol were compared with those of conventional diagnosis used for all the patients with femoral shaft fracture who had sought treatment in our department from September 2003 to August 2005. A chi-square analysis comparing the protocol group (September 2005 to June 2007) and the non-protocol group (September 2003 to August 2005) was used to assess the early and delayed diagnosis rates for an associated ipsilateral femoral neck fracture. Results The earlydiagnosis rate of an associated femoral neck fracture by the protocol was 93.8%, markedly higher than that by conventional method (46.2%), with statistically significant difference (χ2 = 4.069, P =0.044). Conclu-sion In presence of a femoral shaft fracture. this protocol consisting of plain radiography of intemal rotator, intraoperative fluoroscopy of the hip, fine cut computed tomographic scan of the femoral neck, postoperative plain radiography of the hip, and follow-up plain radiography of the hip in the presence of hip pain, may sig-nificantly improve the diagnostic rate of an associated femoral neck fracture.

BACKGROUND:Compared with the normal intervertebral disk, the density of nerve fibers and number of nerve endings and neuropeptides appear to be more in the degenerated intervertebral disk. However, this phenomenon does not occur in the normal y aged disk.
OBJECTIVE:To evaluate the axonal growth and induction of a painful neuropeptide and substance P using rat dorsal root ganglion neurons and degenerated human disc cells in vitro.
METHODS:The human intervertebral discs were harvested from patients with discogenic low back pain and normal people. And extracelluar matrix extracted from human degenerative intervertebral discs was cultured with rat dorsal root ganglion neurons. The promotion of axonal growth and induction of substance P of dorsal root ganglion neurons in extracted medium were evaluated through morphology observation and enzyme-linked immunosorbent assay, respectively.
RESULTS AND CONCLUSION:Compared with the normal group, the content of nerve growth factor in the degenerative group was significantly higher and the average length of neuritis was significantly longer in the experimental group (P<0.05). After intervention with anti-nerve growth factorβ, the average length of neuritis became remarkably shorter. The percentage of substance P-immunoreactive cells was significantly higher in the degenerative group compared with the normal group (P<0.001). Nerve growth factors that highly express in the extracellular matrix from the degenerative intervertebral dick can promote neurite outgrowth of dorsal root ganglion neurons and induce release of neuropeptides related to pain transmission.

0.05).(4)The para-operation pulmonary function indexes(VC,VC%,FEV1)of the patients who had the variation of ECG were significantly lower than those of no-complication patients.(P

Objective To observe the preliminary clinical results and safety of 27-gauge microincision vitrectomy surgery for partial vitreoretinal diseases.Methods A total of 13 patients (13 eyes) who underwent 27-gauge microincision vitrectomy surgery were enrolled.The follow-up period was 6 to 12 months.Preoperative and postoperative visual acuity and intraocular,total operative time,cutting time for removing vitreous,wound healing status,intraoperative and postoperative complications were observed.Results Mean best corrected visual acuity improved from preoperative (1.26±0.66) logMAR (0.10±0.09) to postoperative (0.63±0.52) logMAR (0.35±0.24),and the difference was statistically significant (t=2.743,P=0.018).The difference of mean preoperative intraocular pressure (IOP),IOP of postoperative day 1,day 5,one month and final postoperative visit were not statistically significant (F=0.593,P＞0.05).The mean total operative and cutting times were (36.38±14.97) min and (10.12±3.54) min respectively.Postoperative scleral incision showed linear closure,no cases of postoperative sclerotomyrelated complications such as wound dehiscence,vitreous incarceration and subcoujunctival fluid were observed.No intraoperative and postoperative complications of iatrogenic retinal breaks,endophthalmitis,choroidal detachment,retinal detachment and vitrous hemorrhage were observed.Conclusions The 27-gauge microincision vitrectomy surgery can improve postoperative visual acuity for treatment of vitreoretinal diseases and induce fewer sclerotomyrelated complications,which maybe a safer surgical approach.

Objective Investigating the relationship between the incidence of Primary Acute Cerebral Infarction (PACI) and seasonal variation to employ measures to prevent PACI with climate change. Methods A retrospective analysis of patients diagnosed with PACI between 2009 and 2013 in the department of Neurology of Second hospital of Tian Jin Medi-cal University (n=1 198 patients) was carried out. Combined with the general clinical data, we analyzed seasonal, monthly and weekly variation among PACI incidents. Results The incidence of PACI increases over years between 2009 to 2013 (P ＜ 0.01). Significant difference of incidents of PACI was observed between each season (P=0.047). Incidence of PACI peaked in winter(30.33 ± 9.63/month), while bottomed in spring(21.83 ± 5.36/month). Significant difference of incidents of PACI was also observed between each months(P=0.010). The monthly incidence was highest in January and February (33.25 ± 9.62/month)and lowest in March and April(20.75 ± 4.89/month). The seasonal variation was only found in the pa-tients who are complicated with pulmonary infection (P＜0.01) regardless of the presence or absence of other risk factors, such as smoking, drinking ,hypertension, coronary heart disease, and diabetes mellitus. The weekly variation of PACI was on-ly significant in patients younger than 65 years old(P=0.043). The peak incidence among a week was Monday(17.86%),and incidence bottomed on Friday (13.36%). Conclusion Our study revealed that the incidence of PACI increase over year be-tween 2009 to 2013 and it shew a characteristic variation with respect to season, month and week. Based on these results, we can formulate prevention measures accordingly.

Objective To study the mechanism of miR?200c in regulating RMP7?induced increases of blood?tumor barrier(BTB)permeability by targeting Ras homolog gene family member A(RhoA). Methods Endogenous expression of miR?200c was detected by real?time PCR in hu?man cerebral microvascular endothelial cell line hCMEC/D3(ECs)after RMP7 treatment. miR?200c mimic and miR?200c inhibitor were transfect?ed into GECs(ECs with U87 glioma cells co?culturing),respectively. Transfection efficiency of miR?200c mimic and miR?200c inhibitor were de?termined by real?time PCR. HRP flux and TEER assays revealed BTB permeability. The protein expression level of RhoA was assessed by West?ern blotting. The distribution of RhoA was assessed by immunofluorescence microscopy. RhoA luciferase assays were performed using the Dual?Lucif?erase reporter assay system. Results RMP7 significantly induced a decrease in miR?200c expression in GECs of BTB. miR?200c mimic and miR?200c inhibitor were successfully transfected into GECs. Overexpression of miR?200c inhibited endothelial leakage and restored normal transendo?thelial electric resistance values. Simultaneously ,overexpression of miR?200c significantly reduced the protein expression level of RhoA. In addi?tion,immunofluorescence analysis revealed that the distribution of RhoA in the cytoplasm and nuclei of GECs were decreased in miR?200c mimic group. RhoA was one of the direct targets of miR?200c with the specific binding site being located at the seed sequence. The results of miR?200c si?lencing were opposite to that of the miR?200c overexpression group. Conclusion miRNA?200c regulated RMP7?induced increases in BTB perme?ability by targeting RhoA.

Objective To study the treatment of the chronic calcaneus osteomyelitis combined with skin ulcers or defects of the posterior heel following internal fixation for calcaneal fractures.Methods From February 1999 to June 2005,17 cases of calcaneus osteomyelitis combined with skin ulcers or defects following internal fix- ation for their calcaneal fractures were treated with elimination of infection focuses and dead spaces,tissue trans- plants and continuous irrigation.Skin flaps or myocutaneous flaps were used to repair heel ulcers or defects and to fill the dead spaces.Drainage and irrigation tubes were placed into the flap covered areas to carry out the continuous irrigation.Results All the cases were followed up for 3 to 36 months(mean,25 months).All the grafts survived without recurrence of calcaneus osteomyelitis.Their posterior heels regained fair appearance.Thirteen cases obtained fine sensory recovery and friction tolerance and could walk with weight-bearing.Conclusion Calcaneus os- teomyelitis can be cured by simply and effectively tissue transplants and continuous irrigation,which can provide adequate anti-infection and improve blood circulation.

Objective In order to solve the scaffold material and the cell source of the tissue engineering bile duct.This experiment was divided into two parts: ⑴To cultivate the vascular smooth muscle cell(VSMCs)in vitro and observe the cultivate status of the VSMCs in 3D environment of polylatic acid-polynlycolic acid(PLGA).⑵To explore the feasibility of differentiation of rat bone marrow stromal cells towards liver stem cells in vitro.Method ⑴To cultivate the VSMCs with PLGA(the film material with 3D material) after they were successfully cultivated,and to observe the cell growth status by inverted microscope,scanning electron microscope and MTT.⑵To culture rBMSCs in vitro by culturing the full bone marrow stem cells in a system containing hepatocte growth factor(HGF).The morphology of the cells was observed by inverted microscope,and the expressions of albumin,AFP were detected with ELISA and immunohistochemistry technique.Result ⑴The VSMCs growth is prosperous in vitro with good compatibility with PLGA.⑵After being cultured with HGF,the rBMSCs showed multilateral and ovary tansformation.The differentiated cells expressed albumin and AFP.Conclusion ⑴The VSMCs were successfully cultivated and purified in vitro and have good compatibility with PLGA.⑵ The rBMSCs have the ability to-differentiate into liver stem cells in vitro.The current studies provide the experimental basis for rBMSCs to differentiate into endothelial cells of the bile duct.