Objective To investigate the clinical significance of three-dim en sional CT in diagnosis and treatment of posterior pelvic ring fractures. Methods A retrospective analysis was done for 19 cases of posterior pelvic ring fractur es who were treated from March 2002 to August 2003 and had plain and three-dime nsional CT films. Their radiological characteristics and results were compared b etween the 2 kinds of film. Results 3-D CT corrected the misdiagnosis or uncert ainty of 9 cases who had plain radio-graphs. The 3-D CT showed obvious advanta ges over plain radio-graphs in detecting sacroiliac diastasis, sacroiliac joint fragments, fractures involving iliac and sacral lips abutting the sacroiliac jo int, sacral fracture and complicated comminuted fracture, because it clearly del ineated fractures of posterior pelvic ring and manifested the severity of commin ution and separation. Conclusion The 3-D CT scan provides valuable information for precise diagnosis and treatment plan for the complex posterior pelvic ring f ractures.

Background Clinical researches showed that antimicrobial-resistance of bacterium is gradually serious.It is very important to master pathogen distribution and antimicrobial susceptibility after eye surgery.Objective This study was to investigate the distribution and drug sensitivity of pathogenic bacteria from ocular operative infection in 3-year duration to provide a reference for reasonable selection of antibiotics.Methods Sixtyfive positive specimens were obtained from 65 patients due to postoperative infection in Department of Ophthalmology of Shenzhou Hospital and Shengjing Hospital from 2009 January through 2011 December.The pathogenic bacteria were isolated and then the drug sensitivity test of conventional antibiotics was performed.Results Among the 65 ophthalmic specimens,35 strains of Gram-positive bacteria were isolated with the constituent ratio 53.8％,and 15 strains of Gram-negative bacteria accounted for 23.1％.Fungus was found in 15 cases with the constituent ratio 23.1％.Staphylococcus epidermidis accounted for 42.9％ in Gram-positive bacteria,and Pseudomonas aeruginosa accounted for 33.3％ in Gram-negative bacteria.Aspergillus was the main component of fungus,which accounted for 60.0％ of the proportion 3 strains of methicillin-resistant Staphylococcus aureus (MRSA) in 8 strains of Staphylococcus aureus,but no vancomycin-resistant Enterococcus (VRE) and vancomycin-resistant Staphylococcus (VRS) were seen.The in vitro drug sensitivity test showed that the main Gram-positive bacteria,Staphylococcus epidermidis and Staphylococcus aureus,were sensitive to linezolid,vancomycin,levofloxacin and ciprofloxacin with the sensitive rates ＞50.0％,and these bacteria were lowly sensitive to penicillin and erythromycin with the sensitive rates ≤30.0％.Pseudomonas aeruginosa appeared to be the main Gram-negative bacteria,showing a sensitive rate ≥ 80.0％ to tobramycin,amikacin,ceftazidime,cefepime,cefoperazone/sulbactam,piperacillin/tazobactam,imipenem and meropenem.Conclusions Staphylococcus epidermidis,Staphylococcus aureus,Pseudomonas aeruginosa and Aspergillus are primary pathogens in ocular infection after operation.Antibiotics such as penicillin,erythromycin,levofloxacin,cefotaxime seem to be relatively high resistant to eye infection.To choose sensitive antibiotics timely and reasonably is a key to the prevention and control of ocular infection after operation.

Objective To explore the relationship between vitamin D and depression and the effects of chronic unpredictable mild stress (CUMS) plus sertraline on vitamin D metabolism in rat brain.Methods Male SD rats were randomly divided into normal control group,normal control + sertraline group,CUMS group and CUMS+sertraline group.CUMS was used to build the animal model of depression.After chronic exposure to CUMS or sertraline (8 mg·kg-1·d-1) for 6 weeks,behavioral response (sucrose preference test) and vitamin D metabolism in the prefrontal cortex were analyzed.Results Compared with normal control group,6 weeks of CUMS procedure induced the rats to a depression-like state,decreased weight and sucrose preference,and increased the expression of enzymes involved in vitamin D activation and catabolism (CYP27B1 and CYP24A1,respectively) and vitamin D receptor (VDR) in rat prefrontal cortex.As compared with CUMS group,CYP27B1,CYP24A1 and VDR were significantly decreased in CUMS+sertraline group (P<0.01 or P<0.05).Conclusion CUMS activates vitamin D signaling in the brain of the animal models of depression,while sertraline alleviates depressive behavior and relieves stress-induced activation of vitamin D signaling,indicating that vitamin D signaling may be involved in the stress-induced depression.

Over the last decade,a growing body of evidence has indicated that vitamin D is not only crucial in maintaining calcium-phosphorus homeostasis and bone density,but also implicated in the regulation of immune system and the maintenance of the normal function of central nervous system.A variety of neuropsychiatric disorders such as multiple sclerosis,Alzheimer's disease,Parkinson's disease,schizophrenia,and depression are suggested to be associated with vitamin D deficiency and immune activation.In this review,we summarize the recent key findings concerning the effect of vitamin D on neuroimmmune modulation and its potential role in those neuropsychiatric disorders.

ts the shear stress, thus, facilitates the union of fracture and the restoration of function.

OBJECTIVE: To observe the promoting effect of arnebia root oils on expression of basic fibroblast growth factor (bFGF) in skin wound of rabbits and the histomorphological changes in the wound surface, and to discuss its mechanism. METHODS: Bilateral round skin wounds were made on the back of 15 rabbits. The three wounds on one side of the back of each rabbit were treated with arnebia root oils, while the three wounds on the other side were treated with vaseline in order to promote the wound healing. The histomorphology and ultrastructure under electron microscopy of the wounds, and the rate of wound healing were examined at different time. Western blotting assay was used to detect the expression of bFGF in the wound surface. RESULTS: The healing rate of the arnebia root oils-treated wounds was evidently higher than that of the vaseline-treated wounds (P<0.05). The quantities of fibroblast, collagen and capillary in the arnebia root oils-treated wounds were much more than those in the vaseline-treated wounds, and the expression of endogenous bFGF in the arnebia root oils-treated wounds was enhanced obviously as compared with that in the vaseline-treated wounds in different period of wound healing. There existed a parallel correlation between the expression level of bFGF and the rate of wound healing. CONCLUSION: The promoting effect of arnebia root oils on wound healing may be related to increasing the expression level of basic fibroblast growth factor in the skin wound.

OBJECTIVETo observe the changes in Aβ40, Aβ42 and ADDLs in brains of 3 month-old APPswe/PS1dE9 double transgenic mice after six-month intervention with curcumin, in order to discuss the neuroprotective effect of curcumin.

METHODAPPswe/PS1dE9dtg mice were randomly divided into the model group, the Rosiglitazone group (10 mg x kg(-1) x d(-1)) and curcumin high (400 mg x kg9-1) x d(-1)), medium (200 mg x kg(-1) x d(-1)) and low (100 mg x kg(-1) x d(-1)) dosage groups, with C57/BL6J mice of the same age and the same background in the normal control group. After 6 months, the immunohistochemical staining (IHC) and the Western blot method were used to observe the changes in positive cell of Aβ40, Aβ42 and ADDLs in hippocampal CA1 area, their distribution and protein expressions.

RESULTBoth of the immunohistochemical staining and the Western blot method showed more positive cell of Aβ40, Aβ42 and ADDLs in hippocampal CA1 area and higher protein expressions in the model group than the normal group (P < 0.01). IHC showed a lower result in the Rosiglitazone group than the model group (P < 0.05), while Western blot showed a much lower result (P < 0.01). The number of Aβ40, Aβ42 and ADDLs positive cells and the protein expressions decreased in the curcumin high group, the medium group showed a significant decrease (P < 0.01), and the low dose group also showed reductions in the protein expressions of Aβ40 and Aβ42.

CONCLUSIONThe six-month intervention with curcumin can significantly reduce the expressions of hippocampal Aβ40, Aβ42 and ADDLs in brains of APPswe/PS1dE9 double transgenic mice. Whether curcumin can impact Aβ cascade reaction by down-regulating expressions of Aβ40, Aβ42 and ADDLs and show the neuroprotective effect needs further studies.

Alzheimer Disease ; drug therapy ; genetics ; metabolism ; Amyloid beta-Peptides ; genetics ; metabolism ; Animals ; Brain ; drug effects ; metabolism ; Curcumin ; administration & dosage ; Disease Models, Animal ; Hippocampus ; drug effects ; metabolism ; Humans ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Neuroprotective Agents ; administration & dosage ; Plant Extracts ; administration & dosage

ObjectiveTo investigate the application of intraoperative Computed Tomograph (CT) using in surgery for complex acetabular fractures.MethodsFrom June 2008 to December 2010,14 patients (9 males,5 females; with the mean age of 45.1 years; range,28-62 years) with complex acetabular fractures were operated using intraoperative CT.Preoperative radiotherapy and CT scan were adopted to evaluate the fractures.Three dimensional reconstruction based on CT scan was used to mimic surgery.The surgery approach and the type of internal fixators were noted.Intraoperative C-arm and CT scan were used to evaluate the fractures reduction respectively.Decision of additional reduction was made by surgeons according to above mentioned methods respectively and the results were noted.Comparing to preoperative design,the change of surgery plan were noted.Overall time,frequency and radiation dose of intraoperative CT scan were also noted.ResultsAll patients in this study received average 2.7 times of intraoperative CT scan.Mean time of CT scan was 40.4 min and the overall dose of radiation was 47.2 mGy.Decision of additional reduction was made in 3 cases according to C-arm radiography and 4 cases according to CT scan (above mentioned 3 cases were included).The change of surgery plan was made in one case.In postoperative radiography evaluation according to Matta's score system,anatomical reduction were achieved in 8 cases,imperfect reduction in 3 cases and poor reduction in 3 cases.ConclusionIntraoperative CT scan increases the radiation time and dose of patients dramatically.When used to evaluate fracture reduction intraoperatively,it can't take the advantage of traditional C-arm radiography.When delicate preoperative plan is made with radiography and three dimensional reconstruction based on CT data,the efficiency of intraoperative CT scan for complex acetabular fractures are to be discussed.

OBJECTIVETo explore the molecular biological mechanism of Arnebia Root oil (AO) in promoting the recovery of surface of wound by observing basic fibroblast growth factor (bFGF) mRNA expression in the wound tissue and healing rate of the wound.

METHODSPatients in the observed group with their wound treated by AO and those in the control group treated by petrolatum gauze. The wound surface healing rate was estimated and bFGF mRNA expression was observed by RT-PCR.

RESULTSEndogenous bFGF mRNA expression existed in the wound surface of both groups, but its level in the observed group at any time point was obviously higher than that in the control group respectively, with significant difference in comparison of the gray density between the two groups (P < 0.05). The wound surface healing rate kept abreast with bFGF mRNA expression in wound tissues, so it was significantly higher in the observed group than that in the control group (P < 0.05). GAPDH gene, which was taken as a parameter for internal reference, expressed with a certain amount unchanged in different periods of healing (P > 0.05 ).

CONCLUSIONAO shows obviously promotive action on bFGF, an important regulatory factor on wound healing, it might complete the recovery process by stimulating the increase of bFGF.

Adolescent ; Adult ; Boraginaceae ; chemistry ; Drugs, Chinese Herbal ; administration & dosage ; Female ; Fibroblast Growth Factor 2 ; biosynthesis ; genetics ; Humans ; Male ; Middle Aged ; Phytotherapy ; Plant Oils ; administration & dosage ; isolation & purification ; Plant Roots ; chemistry ; RNA, Messenger ; biosynthesis ; genetics ; Wound Healing ; drug effects ; Wounds and Injuries ; drug therapy ; metabolism

SARS-associated coronavirus has been identified for the cause of Severe Acute Respiratory Syndrome, for which there is no efficacious drugs or vaccines. RNA interference (RNAi) is a process in cell to degradation specific target mRNA by double-stranded RNA. In mammalian cells, RNAi can be triggered by short interfering RNA (siRNA). RNA interference of virus-specific genes has emerged as a potential antiviral mechanism. This work evaluated if RNase III-prepared short interfering RNAs can induce specific degradation of SARS-coronavirus mRNAs in human cells. Three of SARS genes, RNA dependent RNA polymerase (RdRp), spike and nucleocapsid, were amplified with T7 promoter-flanked primers. Long length double-stranded RNA of these genes were transcribed in vitro and then were cleaved to <30bp length short interfering RNA with E. coli RNase III. These siRNAs were termed esiRNA-R, esiRNA-S and esiRNA-N respectively. RdRp, spike and nucleocapsid DNA fragments were inserted into the plasmid pGL3-Control, obtained plasmids pGL-R, pGL-S and pGL-N can express hybrid mRNAs luciferase-RdRp, spike and -nucleocapsid in cells. Above plasmids and esiRNAs were co-transfected to HEK293F cells with reference plasmid pRL-TK. Firefly luciferase and Renilla luciferase activity were measured. Hybrid mRNAs' abundance was measured using reverse transcription real-time PCR. Firefly luciferase expression of pGL-R was reduced to 13% by esiRNA-R. Expression of pGLS was reduced to 11% by esiRNA-S. Expression of pGL-N was reduced to 40% by esiRNA-N. Control esiRNAs didn't affect luciferase expression; Hybrid mRNAs' abundance was dramatically reduced by corresponding esiRNAs. RNase III-prepared short interfering RNAs induce robust and specific degradation of SARS-coronavirus mRNAs in HEK293F cells. These siRNAs could be used to inhibit SARS-coronavirus in future research.
Cells, Cultured ; Humans ; Plasmids ; RNA Interference ; RNA, Messenger ; metabolism ; RNA, Small Interfering ; genetics ; RNA, Viral ; metabolism ; Ribonuclease III ; physiology ; SARS Virus ; genetics