Objective:To investigate the effects of Nano-chitosan rhBMP-2 Gel(NCS/BMP-2 Gel)on the repair of mandibular de-fect.Methods:NCS/BMP-2 Gel and NCS Gel were prepared and respectively injected into the subcutaneous space on both sides of dorsum of 9 rats.3 rats were respectively sacrificed 10,20 and 30 d after injection.The subcutaneous nodules were histologicaly ex-amined.Mandibular defect was made in 54 SD rats and the rats were divided randomly and into 3 groups(n=18):NCS/BMP-2 Gel was implanted into the defects in group 1,NCS Gel in group 2,no injection in group 3.Animals were sacrificed 3,6 and 9 weeks after transplantation.X-ray examination,pathologic observation were conducted.Results:Subcutaneous nodules were found in both sides of the rat dorsum.The residual mandibular defect area in study group 1 was apparently smaller than that in group 2 and 3(P<0.05). More new bone formation was observed in the gel injected area in group 1 than in group 2 and 3.Conclusion:Nano-CS/BMP-2 Gel is biocompatible and can accelerate the healing of mandibular defect.

Objective To evaluate the efficacy of DICE regimen on relapsed or refractory NHL,and observe its toxicitv.Methods Records of 50 patients with relapsed or refractory invasive NHL were treated with DICE regimen.All patients had received at least 1 type of chemotherapy regimen with a median of 6 cycles.The patients received a median of 4 cycles of DICE regimen.Resuits The treatment outcome and adverse events of all patients were analyzed.The overall response rate was 48.0%.with a complete response (CR)rate of 16.0%.The response rates were 53.8%in the 26 patients with B-cell lymphoma and 29.2% in the 24 patients with T-cell lymphoma.The 1-and 2-year survival rates were 34.0%and 8.0%,respectively.The major adverse event was myelosuppression:the prevalence of grad eⅢ-Ⅳ neutropenia Was 38.0%,and that of grade Ⅲ-Ⅳ was 14.0%.One patient suffered grade Ⅲ liver toxicity.Conclusion DICE regimen Was effective for patients with relapsed or refractory invasive NHL, and its toxicity is well tolerated,but the response term is relatively short.Further clinical study on the application of DICE regimen iS needed.

Objective To investigate the expression of vascular endothelial cell growth factor(VEGF) and its upregulation of matrix metalloproteinase-2(MMP-2)activation in synovial fluid of patients with rheumatoid arthritis(RA)as well as its role in the pathogeneses of RA.Mathods Expression of VEGF and receptor KDR in mononuclear cell(MNC)of synovial fluid of RA patients and controls were determined by Western blot;VEGF levels of supernantants from MNC was determined by ELISA;supernantants from KDR~+ MNC of synovial fluid of RA patients collected after incubation in serum-free medium with or without VEGF, their activity of MMP-2 was measured by gelatinolytic zymography;Boyden chamber-matrigel in vitro invasion assay was used to detect the invasive capacity in vitro in KDR~+ MNC of synovial fluid of RA patients incubat- ed with or without VEGF.Results The expressions of VEGF/KDR in MNC of synovial fluid of RA patients were significantly higher than those of controls;the MMP-2 activity and invasive ability of co-cuhured KDR~+ MNC with VEGF was higher than those of without VEGF.Conclusion VEGF upregulates MMP-2 activation and promotes invasion of MNC of synovial fluid of RA patients by interacting with receptor KDR,indicating that VEGF plays an important role in RA pathology.

A reverse transcription polymerase chain reaction (RT-PCR) and single-strand conformation polymorphisms (SSCP) assay were applied to rapidly detect the molecular variability in CP and SP genes among seven isolates of Rice stripe virus in China. The PCR results showed that the CP gene of JD isolate and SP gene of PJ isolate could not be amplified. SSCP analysis showed that there were completely different electrophoretic pattern of CP gene among six isolates. To SP gene, SSCP results also discovered polymorphisms. There were five patterns among these isolates, and the pattern of YL and BS isolates were same.

BACKGROUND:Absorption and atrophy of the alveolar ridge always happen after tooth extraction. There are stil a lot of difficulties to be worked out to prevent the atrophy of the alveolar ridge. OBJECTIVE:To investigate the effect of the nano-chitosan/bone morphogenetic protein hydrogel on preventing absorption of the residual alveolar ridge of the rats. METHODS:Total y 54 Sprague-Dawley rats were divided randomly and equal y into three groups. A model of residual alveolar ridge was made by extraction of the left central incisor. Nano-chitosan bone morphogenetic protein hydrogel was implanted into the rat’s alveolar fossa of the experimental group;the alveolar fossa of the control group was implanted with nano-chitosan hydrogel;the alveolar fossa of the blank group was implanted with nothing. Rat’s mandible was ful y dissected after 3, 6, 9 weeks, respectively. Molybdenum target X-ray examination and pathological observation were evaluated. RESULTS AND CONCLUSION:At weeks 3, 6, 9 postoperation, the residual alveolar ridge was absorbed to different degrees, which was milder in the experimental group than the cotrol group and blank group (P<0.05). After 3 weeks, in the blank group, less new bone formed, but bleeding and a large amount of inflammatory cells were visible; in the control group, a few of osteoid tissues and lymphocytes were found; in the experimental group,new bone formed and a small amount of inflammatory cells were observed. After 6 weeks, new bone formed obviously in the experimental group, a little new bone formed in the control group, but less new bone formed in the blank group. After 9 weeks, a large amount of new bone formed in the experimental group with good osteogenic ability; only a few of new bone formed in the control and blank groups. Nano-chitosan/bone morphogenetic protein hydrogel can be used to prevent the absorption of the residual alveolar ridge after tooth extraction.

Sixty-six volunteers,including 24 subjects with normal glucose tolerance(NGT),18 patients with impaired glucose regulation (IGR),and 24 patients with type 2 diabetes mellitus ( T2DM ),underwent a test of continuous glucose monitoring.The data of continuous glucose monitoring were embedded into two-dimension Euclid space by Takens' embedding theory.Glycemic phase diagram was drawn by MATLAB.The area and center distance of glycemic phase diagram were calculated by computer.The distinction of glycemic variability and average glycemic level among different glucose regulation populations were analyzed.The results showed that there existed significant differences in body mass index,systolic blood pressure,diastolic blood pressure,low density lipoprotein-cholesterol,high density lipoprotein-cholesterol,triglyceride,total cholesterol,creatinine,and alanine aminotransferase among three groups( all P＜0.05 ).The levels of HbAIC,fasting plasma glucose( FPG ),postprandial 2 h plasma glucse (2hPG),area and center distance of glycemic phase diagram in T2DM group were higher than those in NGT and IGR groups( P＜0.01 ),and the levels of FPG,2hPG,area and center distance of glycemic phase diagram in IGR group were higher than those in NGT group( P＜0.01 ).The levels of FPG and 2hPG were correlated with area and center distance of glycemic phase diagram ( all P＜0.01 ).These results suggest that measuring the area and center distance of glycemic phase diagram is a good method to assess glycemic variability and average glycemic level during continuous glucose monitoring.

Craniopharyngioma ; surgery ; Endoscopy ; Female ; Humans ; Middle Aged ; Pituitary Neoplasms ; surgery ; Skull Base ; Sphenoid Sinus ; surgery

OBJECTIVETo evaluate the effectiveness and feasibility of compound bone morphogenetic protein (BMP) with chitosan and cyanoacrylate on preventive absorption of rat's alveolar ridge.

METHODSFifty-four Wistar rats were divided randomly into three groups: Experimental group (compound BMP with chitosan and cyanoacrylate group), control group (chitosan composite group) and blank group. After rat lower incisors were extracted, compound BMP with chitosan and cyanoacrylate were implanted into experimental group rat's residual alveolar fossa, control group implanted with chitosan, blank group left empty. Animals were sacrificed after 3, 6, 9 weeks. X-ray examination, Image-Pro Plus analysis and pathologic observation were evaluated.

RESULTSThe relative length values of residual alveolar ridge and optical density test in experimental group were all greater than those of control group and blank group at 3, 6, 9 weeks after operation (P < 0.05). Light microscopy showed that new bone formations in experimental group were better than those in control group and blank group at 3, 6, 9 weeks after implantation.

CONCLUSIONCompound BMP with chitosan and cyanoacrylate can be used to prevent the absorption of residual alveolar ridge and have more clinical predications. [

Objective To observe the therapeutic effects of low frequency ultrasound enhanced thrombolysis (LFUET) on acute cerebral infarction (ACI) in rats.Methods The ACI animal models were established by injec- ting auto-thrombus into the rats' left middle cerebral arteries.They were then treated with urokinase,and received transcranial LFUET treatment at the same time.Nervous system functioning was assessed using NSS,and infarct vol- umes (IVs) were measured through tetrazolium chloride (TTC) staining.Results The NSS scores in the large- dose urokinase group (LDU group),the ultrasound plus small-dose urokinase group (USMU group) and in the in- farct group (Ⅰgroup) at 24 h after treatment were significantly lower than those before treatment.IVs in the two treat- ment groups are lower than those in theⅠgroup,but there was no significant difference between the LDU group and USMU group volumes.Conclusion LFUET can accelerate the recovery of nervous system function in rats after ACI,minimize IVs,and reduce the required dosage of urokinase.

Objective To summarize common nursing problems of postoperative delirium in elderly patients with hip fracture,to formulate perioperative management scheme,and to implement proactive nursing intervention.Methods Multidisciplinary cooperative team was established,2014 clinical practice guidelines for preventing postoperative delirium in elderly patients from American Geriatrics Society was referenced.Through oxygen therapy and respiratory function training preoperatively,perfusion balance and temperature control and restricted blood transfusion intraoperatively,multimodal analgesia and comprehensive management of sleep postoperatively,professional,systematic perioperative delirium coping strategies were implemented to reduce the incidence of postoperative delirium in elderly patients with hip fracture.Results The incidence of postoperative delirium was 16.36％(9/55) and 30.91％ (17/55) for the experimental group and the control group,the duration of delirium was (3.37±1.21) d and (4.53± 1.87) d,the incidence of postoperative hypoxemia was 9.09％(5/55) and 14.55％(8/55),and the daily total sleep time was(5.18±0.53)h and(3.56±0.69)h.Conclusion Perioperative delirium management scheme involved various nursing coping strategies and quality continuous improvement projects,shortened the first time of ambulation and average days of hospitalization,and reduced the incidence of postoperative delirium.