Objective To evaluate and compare the curative effect between the microinvasive craniopuncture therapy and the clearance of hematoma by craniotomy with small bone flap in treating patients with moderate cerebral hemorrhage (30-60 ml)in the basal ganglion part of the brain. Methods Ninety-five patients with intracerebral hemorrhage were randomly divided into treatment group (microinvasive craniopuncture therapy) and control group (the clearance of hematoma by craniotomy with small bone flap). The main indexes of evaluation were the neurological impairment degree (NID) on the 14th day after treatment, activities of daily living (ADL) by the end of the third month, the incidence rate of complications, and the case fatality during 3 months. Results On the 14th day after treatment, there was no significant difference between the two groups in the NID and the ADL of patients. The incidence rate of respiratory tract infection, gastrointestinal hemorrhage, electrolyte disorder in treatment group [16.33% (8/49), 6.12% (3/49), 6.12% (3/49), respectively] was significantly reduced than those of control group [56.52% (26/46), 21.74%(10/46), 21.74% (10/46),respectively] during hospitalization (P < 0.05). By the end of the third month, there was significant difference in favorable outcomes (Barthel index 95-100) (χ~2 = 18.7524,P =0.0009) and in improving the ADL (MRS)(t =5.2723,P =0.0001) between the two groups [39.13% (18/46), 4.65% (2/43),respectively]. In ease fatality, there was no significant difference between the two groups [6.12% (3/49),6.52% (3/46),respectively]. Conclusion As compared with the clearance of hematoma by craniotomy with small bone flap, the microinvasive craniopuncture therapy can remarkably reduce the incidence of complications, and improve the ADL of patients with moderate cerebral hemorrhage (30-60 ml) in the basal ganglion, and decrease disability without increasing fatality.

ObjectiveTo investigate the effects of fluid percussion injury(FPI) on survival and differentiation of transplanted human embryonic neural stem cells (HNSCs) in rats. MethodsThe HNSCs were separated from the cerebral cortex of the 8-week-old fetal and were cultured in DMEM/F12 combinated with EGF, bFGF and LIF. The rat models of FPI were made with fluid percussion system. The HNSCs labeled with BrdU were transplanted into the injured zone 24 hours after brain injury, then the rats were killed at the 1st and 4th week post-transplanted stages, and the brain slices were stained with immunocytochemistry. The GFAP, MAP-2, and BrdU positive cells were investigated.ResultsThe transplanted HNSCs migrated to the whole brain, and differentiated into GFAP and MAP-2 positive cells. MAP-2 positive cells were observed at 1 week post-transplanted stage, on the contrary, more GFAP positive cells were discovered 4 weeks after transplantation. Part of the HNSCs migrated to the choroids plexus of the lateral ventricle and microvessels. ConclusionThe transplanted HNSCs survive in the injured zone, and differentiate into astrocytes gradually during the recovery. The host devours part of the HNSCs.

Objective To analyze MRI features of neurogenic bladder caused by tethered spinal cord. Methods MRI manifestations of 22 patients with neurogenic bladder due to tethered spinal cord were retrospectively analyzed.Results & Conclusion MRI can display the position of the spinal cord and the cause of tethered cord syndrome. Spinal deformations can also be displaied clearly. The characteristic signs of neurogenic bladder due to tethered spinal cord were the lower position of medullary cone (below L1～L2) and localized thickening or protrusion of the bladder wall.

Objective: To facilitate the functional analysis of chromosomal genes and their products, the recombineering technique to epitope tagging of chromosomal genes of Y. pestis was adapted. Methods: The epitope tag was generated by primer annealing and then fused with resistance gene by fusion PCR. The epitope-resistance cassette was inserted into pBluecript, resulted in the template plasmid, pBS-MH. The tagging cassette for rpoS was obtained by PCR amplification from pBS-MH with primers containing homology specific to the target gene. PCR products were transformed into recombination competent cells and recombinants were selected. PCR and DNA sequencing were used to confirm the correct tagging event. The expression of the tagged protein was detected with Western blot by using monoclonal antibody to the epitope. Results: The template plasmid containing fusion of epitope and resistance gene was successfully constructed. The sigma factor gene, rpoS, was tagged with a myc-his tag at the COOH terminus. Expression of the tagged rpoS was successfully detected indirectly by the antibody against His tag. Conclusion: The chromosomal gene tagging by recombineering technique represents a powerful tool in the functional study of bacterial genes and their products.

OBJECTIVETo compare the effect of autograft, cage and autograft plus internal fixation with plate on maintenance of disc height and recovery of spinal cord function.

METHODSFrom March 1998 to June 2004, 117 cervical spondylotic patients who received anterior fusion surgery were reviewed. There were 65 males and 52 females with an average age of 57 years (range from 31 to 72 years). One level was involved in 91 patients, and two levels in 26. Fusion methods included autogenous tri-cortical iliac bone grafting alone in 31 patients, cage with autograft bone in 38 and autogenous tri-cortical iliac bone grafting combined with self-locking plate in 49. The measured fusion length was determined as the distance from the midpoint between the anterior and posterior aspects of the superior endplate of the top level of the fusion to the midpoint of the inferior endplate of the bottom level of the bottom level of the fusion. JOA rating criteria was used for cord function evaluation. One-way variation analysis was used to compare the disc height loss and cord function among the 3 groups.

RESULTSAll patients were followed-up for an average period of 23 months (range, 13 to 59 months). At final follow- up, disc height loss averaged 1.94 mm in autogenous tri-cortical iliac bone grafting group, greater than that in the other two groups (1.48 mm in cage group and 1.25 mm in instrumented group) with statistical significance. Recovery of spinal cord function was satisfactory in all groups at one year postoperatively with no statistical difference. Three implants failure occurred in self-locking plate group and was salvaged with uneventful recovery.

CONCLUSIONSIn anterior cervical fusion surgery, maintenance of disc height could be achieved by proper application of cage or internal fixation with plate.

Adult ; Aged ; Bone Plates ; Cervical Vertebrae ; pathology ; surgery ; Decompression, Surgical ; instrumentation ; methods ; Female ; Humans ; Ilium ; transplantation ; Male ; Middle Aged ; Retrospective Studies ; Spinal Fusion ; instrumentation ; methods ; Spinal Osteophytosis ; surgery ; Transplantation, Autologous ; Treatment Outcome

OBJECTIVETo assess the clinical outcome of anterior fusion for unstable lower cervical spine.

METHODSFrom October 2000 to October 2004, anterior fusion were performed for 67 cases with unstable lower cervical spine with corresponding clinical manifestations. There were 38 males and 29 females with an average age of 33 years. Instability of lower cervical spine was radiographically determined by sagittal plane displacement between 2 cervical vertebrae of more than 3.5 mm or relative sagittal plane angulation greater than 11 degrees on maximal lateral flexion and extension films. Anterior interbody fusion methods included bone grafting with plate fixation or cage. JOA rating system was used for spine cord function assessment.

RESULTSAll patients were followed up for an average period of 14 months. Solid fusion was achieved for all operated levels. The majority of the patients got a satisfactory relief of preoperative symptoms. JOA scores for cord function improved from preoperative 10.15 to postoperative 14.95 with statistical difference (P < 0.05). Complications included screws loosing and backout in 2 cases. Revision surgery were performed with uneventful recovery.

CONCLUSIONSatisfactory clinical outcome can be achieved by proper selection of anterior fusion methods for patients with unstable lower cervical spine.

Adolescent ; Adult ; Cervical Vertebrae ; Female ; Follow-Up Studies ; Humans ; Joint Instability ; surgery ; Male ; Middle Aged ; Retrospective Studies ; Spinal Fusion ; methods ; Treatment Outcome

Adult ; Aged ; Diskectomy ; methods ; Endoscopy ; methods ; Female ; Humans ; Intervertebral Disc Displacement ; complications ; pathology ; surgery ; therapy ; Lumbar Vertebrae ; pathology ; surgery ; Male ; Middle Aged ; Spinal Stenosis ; complications ; pathology ; surgery ; therapy ; Treatment Outcome ; Young Adult

Female ; Humans ; Influenza A Virus, H1N1 Subtype ; Influenza Vaccines ; therapeutic use ; Influenza, Human ; prevention & control ; Male ; Medical Staff ; statistics & numerical data ; Refusal to Participate ; statistics & numerical data

BACKGROUNDEfficient cell adhesion and proliferation is a central issue in cell-based tissue engineering, which offers great promise for repair of urethral defects or strictures. This study evaluated the adhesion and growth of rabbit uroepithelium on a surface-modified three-dimensional poly-L-lactic acid (PLLA) scaffold.

METHODSUrethral mucosa were harvested from male New Zealand rabbits and the urothelium were dissociated and then cultured. Immunocytochemistry on cultured uroepithelium for pancytokeratin and uroplakin II and TE-7 confirmed pure populations. After in vitro proliferation, cells were seeded onto a surface-modified urethral scaffold with non-knitted filaments. The morphology and viability of the cells were examined by immunohistochemical and fluorescence staining. Inverted and scanning microscopes were used to document cell growth and adhesion.

RESULTSThree to five days after primary culture, the uroepithelial cells gradually became confluent, assuming a cobblestone pattern. The filaments of the urethral scaffold had excellent biocompatibility and allowed growth of the uroepithelium, without affecting viability. The uroepithelial cells adhered to and grew well on the scaffold. After 3 - 7 days, the cells grew vigorously and meshes of the scaffold were full of uroepitheliums.

CONCLUSIONSThe surface-modified urethral scaffold with non-knitted filaments allows the growth of uroepithelium and can serve as a carrier for the tissue engineering of urethra.

Absorbable Implants ; Animals ; Cells, Cultured ; Epithelial Cells ; physiology ; Lactic Acid ; Male ; Polyesters ; Polymers ; Rabbits ; Tissue Engineering ; methods ; Urethra ; cytology

Objective To investigate the expression of granulocyte colony-stimulating factor receptor(G-CSFR,CD114)in acute myelocytic leukemia(AML)bone marrow CD34+cells and evaluate G-CSF's secutiy of applying to the patients of AML after chemotherapy.Methods From March 2008 to January 2009,62 AML patients[33 deno-vo or relapsed AML patients,29 AML patients in complete remission(CR)]and 16 normal controls in the General Hospital,Tianjin Medical University were detected for the expression of G-CSFR in CD34+cells by Fluorescence-activated cell sorer(FCM)and Semi-quantitative reverse transcription-polymerase chain reaction(RT-PCR).Results The ratio of CD114+CD34+/CD34+ in the deno-vo or relapsed group,CR group and the control group were(11.69?2.91)%,(31.84?8.62)%,(32.87?8.44)% respectively(P0.05),G-CSFR mRNA expression in BMNNCs of the deno-vo or relapsed group,CR group and the control group were(30.52?6.21)%,(85.13?21.25)%,(91.57?18.64)% respectively(P0.05).13 AML patients were followed up.The ratio of CD114+CD34+/CD34+ before treatment and in CR were(12.58?2.00)% and (30.13?7.09)% respectively.The ratio before treatment was lower than that in CR(P