The mechanism of complex unfolding process of Pseudomonas aeruginosa apoazurin is an arguing problem. Recent published results indicated that this problem could be resolved by hypothesizing two native conformations coexisting in solution.Urea-induced unfolding of apoazurin was investigated further using intrinsinc fluorescence and CD spectra. Equilibrium unfolding curves in urea could be depicted with an apparent two-state transition, but a biphase kinetic process. The fast unfolding process is finished within a few seconds as monitored by stopped-flow fluorescence intensity, whereas the slow process requires several hours for as well as the circular dichroism spectra just after manual mixing of protein and denaturant could be simulated by superposition of the spectra of the native and fully unfolded protein with the same coefficient of 0.37. This strongly suggests the three-state mechanism with a partially unfolded intermediate on its pathway is inadequate. The hypothesis of two native conformations coexistence is a reasonable selection.

Objective To reveal the transmiting discipline of parameters and define time window for therapy of ischemia penumbra by continuous detection of diffusion tensor imaging(DTI), and evaluate the relations between cortical spinal tracts(CST) and myodynamia by diffusion tensor tract(DTT). Methods 71 patients of cerebral infarction with different timing were imaged with conventional MRI, DWI and DTI, measuring DCavg, FA, RA , 1-VR of different ROI and performing DTT in ten patients. Results DCavg of lesions in different phases were [(0.275?0.022),(0.349?0.019),(0.465?0.023),(0.538?0.035)]?10~ -3mm~2/s, respectively. DCavg value showed tendency of reducing obviously, elevating gradually and false-normalizing (P

· AIM: To observe the effects of PTEN and the tumor suppressor gene in proliferative LECs of the rabbit.·METHODS:Forty-two white rabbits were randomly divided into test group (36 rabbits) and control group (6rabbits). The transparent lenses of treated rabbits were operated with extra capsular cortex extraction, and the controls were kept untouched. The rabbits were sacririced at 1d, 3d, 1wk, 2wK, 1mo and 2mo after surgery.Immunohistochemistry was applied to detect proliferative cellular nuclei antigen (PCNA) as well as hybridization in situ and reverse-transcriptase polymerase chain reactions (RT-PCR) were applied to detect phosphatase as well as tensin homology deleted on chromosome 10(PTEN) mRNA in lens equartor.·RESULTS:PCNA expression increased significantly to a high level at 1wk, began to reduce 2wk later, and recovered to the normal level 1 or 2mo after the surgery.PTEN mRNA expressed positively in normal rabbit LECs.The relative PTEN mRNA contents reduced greatly at 1dafter operation and remained low level at 3d. It began to increase slightly at 1wk, kept rising at 2wk and regained the normal expression after 1 or 2mo. There was inverse correlation between the PTEN mRNA and PCNA expression.·CONCLUSION: PTEN mRNA expresses positively in normal rabbit LECs plasma. PTEN participates in LECs proliferation and correlates with lens proliferative conditions.

Objective To create the effective community-based day-care model of mental disability with multiple approaches. Methods 30 subjects with schizophrenia in Taoranting community in Beijing were selected in control group (n=15) and intervention group (n=15). A day-care multiple rehabilitation model had been implemented in the intervention group. They were evaluated with Positive and Negative Syndrome Scale (PANSS) and WHO Disability Assessment Schedule 2.0 (WHO-DAS 2.0). Results The scores of PANSS negative symp-tom, general psychopathological symptom and WHO-DAS 2.0 significantly reduced continually in the intervention group 8 and 12 weeks af-ter intervention (P<0.01). Conclusion Community-based day-care model can improve the rehabilitation of mental disabled people and inte-grate the community resources for the schizophrenics.

Acquired Immunodeficiency Syndrome ; immunology ; Adolescent ; Chemokines ; immunology ; Child ; Child, Preschool ; Female ; Humans ; Male

Altitude ; Animals ; Astrocytes ; cytology ; Brain ; cytology ; Hypoxia ; Male ; Microglia ; cytology ; Rats ; Rats, Wistar

Adenocarcinoma ; complications ; pathology ; surgery ; Aged ; Colectomy ; methods ; Colonic Neoplasms ; complications ; pathology ; Diagnosis, Differential ; Female ; Hepatectomy ; methods ; Humans ; Liver ; pathology ; surgery ; Liver Diseases ; complications ; pathology ; surgery ; Necrosis

AIM:To explore the application effect of pranoprofen combined with tobramycin and dexamethasone ophthalmic suspension in cataract extraction after IOL implantation.METHODS:Retrospective analysis of the clinical data of cataract patients treated from May 2015 to June 2016 in our hospital.According to the treatment methods, patients were divided into tobramycin and dexamethasone ophthalmic suspension with pranoprofen group (combined treatment group) and pranoprofen treatment group.The difference of visual acuity, intraocular pressure, anterior chamber flash change, satisfaction rate and symptom score before and after treatment in two groups were observed.RESULTS:The vision of the two groups before treatment had no difference(P>0.05).At 1wk and 1mo after treatment, the visual acuity of the two groups all improved compared with before treatment, there was no significant difference between the two groups (P>0.05).Before treatment, the anterior chamber flare of the two groups had no difference(P>0.05).At 1wk and 1mo after treatment, the anterior chamber flare of combined treatment group was lower, the difference was statistically different (t=2.435, 1.864;P<0.05).The symptom score of the two groups before treatment had no difference(P>0.05).After treatment, the symptoms and signs of combined treatment group was significantly lower than that of pranoprofen group (t=2.586, 7.820;P<0.05).The satisfaction rate of the combined treatment group patients was 100%, significantly higher than pranoprofen group.CONCLUSION:Pranoprofen and tobradex in the treatment of cataract extraction and intraocular lens implantation has good application effect, can significantly improve the patient's symptoms and signs.

Objective To investigate the effect of fluoride on the expression of a subunit of calcium/calmodulin-dependent protein kinase- Ⅱ (α-CaMK Ⅱ ) at both mRNA and protein levels in human neuroblastoma cells were cultured in DMEM with final concentrations of NaF 0(control) ,0.05,0.50,2.00,5.00 mmol/L, respectively, for 48 hours. Then quantitative RT-PCR and Western blot were performed to detect the expression level of α-CaMK Ⅱ P1 (postnatal day 1) pups together with their mothers were randomly divided into three groups. Lactating rats were given drinking water containing NaF at concentrations 0(control) ,2,3 mmol/L. And pups were exposed to NaF through milk. In each group, 8 pups were sacrificed on day 14 after birth. In post-weaning period, another 8 pups in each group were given drinking water with the same dose of fluoride as their mother's 21 day after birth. After then, these pups were killed on day 28, and hippocampus was dissected immediately and Western blot was conducted mRNA and protein levels were decreased. When NaF concentrations were 0,0.05,0.50,2.00,5.00 mmol/L, the mRNA relative ratios of α-CaMKⅡ in SY5Y cells were 1.00 ± 0.00,0.77 ± 0.18,0.40 ± 0.11,0.22 ± 0.06 and 0.15 ± 0.03, and protein levels of α-CaMK Ⅱ were 100.00 ± 0.00,76.17 ± 2.08,59.16 ± 2.12,48.52 ± 2.71 and 43.51 ± 2.57, any mmol/L group, hippocampus α-CaMK Ⅱ protein levels on day 14 and 28(75.02 ± 2.88,73.83 ± 3.88 and 81.00 ± 2.54,45.70 ± 2.34) were significantly lower than that of control groups(100.00 ± 0.00,100.00 ± 0.00, all P < 0.01). In 3 mmol/L group, hippocampus α-CaMKⅡ protein level on day 28 was lower than that of 2 mmol/L group (P < 0.01). Conclusion Fluoride can decrease mRNA and protein levels of α-CaMK Ⅱ in nerve cells and hippocampus, which may be one of the mechanisms of learning and memory impairment by fluorosis.

Objective To report deep venous thrombosis (DVT) after greater saphenous vein ligation and stripping and to evaluate diagnosis,treatment and prophylaxis. Methods The clinical characteristics, diagnosis and treatment of 12 inpatients with postoperative DVT were analyzed retrospectively. Results Of these 12 cases there were 7 cases of central type DVT,2 cases of peripheral DVT,and 3 cases of mixed type DVT.Secondary pulmonary embolism was complicated in 2 cases.Clinical symptoms in these 10 cases of proximal DVT were all severe.Catheter-directed thrombolysis(CDT) through the ipsilateral popliteal vein with protective(IV)CF was applied for these 10 cases.Of 10 cases,femoral vein was found ligated in 1 case,which was repaired under open surgery. Residual greater saphenous vein thrombus extending into deep vein was proved and managed by successful thrombolectomy in one case.Cockett syndrome were found as the causes in the other 8 cases,6 cases were treated with balloon dilatation angioplasty and endovascular stenting of the iliac vein.The 2 cases of with distal DVT were treated by anticoagulation therapy.All patients were cured. Conclusions Cockett syndrome,femoral vein injury and too long residual greater saphenous vein are common causes of DVT after greater saphenous vein ligation and tripping.Careful selection of cases,correct diagnosis,standard operative manipulation,early ambulation were all important in the prevention of DVT after great saphenous vein varix procedure.