OBJECTIVETo investigate the clinical efficacy and safety of keyhole partial laminectomy and tapping technique combined blindly transpedicular screw placement in cervical spine.

METHODSKeyhole partial laminectomy and tapping technique combined blindly transpedicular screw placement, was introduced. It was performed in 40 patients. The fusion and screw position were observed in postoperative X-ray and CT, and the breach of pedicle were evaluated. Neurological improvement was followed up.

RESULTSThirty-one cases were followed up, the mean follow-up period was 35 months. 28 cases screw fixation firmly and fusion completely, 3 cases fusion partly and no screw loosening. only 6.74% had a critical breach. Neurological function were improved in 29 cases of spinal cord injuries, only critical complication in one case.

CONCLUSIONSKeyhole partial laminectomy and tapping technique. combined blind placement is one of most usefull, feasible and safe procedures in transpedicular screw placement of the cervical spine.

Adult ; Aged ; Bone Screws ; Cervical Vertebrae ; injuries ; surgery ; Female ; Follow-Up Studies ; Fracture Fixation, Internal ; instrumentation ; methods ; Humans ; Laminectomy ; methods ; Male ; Middle Aged ; Spinal Diseases ; surgery ; Spinal Fractures ; surgery ; Treatment Outcome

OBJECTIVESTo investigate the clinical efficacy and safety of biopsy and Kyphoplasty in the diagnosis and treatment of osteoporotic thoracolumbar vertebral fracture nonunion, and to explore the clinical characteristics of the disease.

METHODSFrom July 2005 to May 2010, the clinical data of 8 patients with nonunion of osteoporotic thoracolumbar vertebral fractures were studied. There were 3 males and 5 females, with the mean age of 73.5 years (range, 65 - 86 years). The fracture vertebrae were 3 cases in T(12), 4 in L(1), and 1 in L(2). All cases received radiography, CT and MRI examination. All patients were treated by using Kyphoplasty. Five patients were performed bone biopsy successfully, 3 patients were failed. The curative effect was evaluated by visual analogue scale (VAS), anterior vertebral height restoration at preoperative, postoperative and followed-up time.

RESULTSAll patients tolerated the procedure well with immediate relief of back pain after Kyphoplasty. No severe complications were found in all patients. Three cases had the pathologic appearance of sequestrum, 2 cases were sparse cancellous bone, 3 cases were abortive to biopsy. All the patients were followed up of 22.6 months (range, 3 - 37 months), the VAS was 9.5 before operation, 2.1 at the third day postoperatively, there were significant difference between the two phase (P < 0.05), and 2.3 at last follow-up, there were no difference between postoperation and follow-up phase (P > 0.05). And the height of compressed body recovered markedly. The vertebral height had a recovery rate of 67.2% postoperatively, 64.1% and at last follow-up, there were no difference between the two phase (P > 0.05).

CONCLUSIONSKyphoplasty is an effective and safe method in the treatment of osteoporotic throacolumbar vertebral fracture nonunion. Bone biopsy can play a further role of differential diagnosis.

Aged ; Aged, 80 and over ; Biopsy ; Female ; Follow-Up Studies ; Fractures, Compression ; diagnosis ; surgery ; Humans ; Kyphoplasty ; methods ; Male ; Middle Aged ; Osteoporosis ; complications ; Retrospective Studies ; Spinal Fractures ; diagnosis ; surgery ; Treatment Outcome

OBJECTIVETo research and appraise the method and long-term effects of trigeminal neuralgia by the operation of retrogasserian combing.

METHODSFrom 1994 to 2000, fifty cases of trigeminal neuralgia were treated through posterior fossa microsurgery, 30 of which received both microvascular decompression and retrogasserian combing while 20 only by retrogasserian combing.

RESULTSOf the 50 cases, forty of trigeminal nerves were found to be compressed by arteries, while 28 of them were the superior cerebellar artery, and 12 the anterior inferior cerebellar artery. All the cases were cured through the operations. Fifty patients were followed up for 4 to 8 years, and then 2 recurrent patients were found and other 48 patients had no recurrence. Nine out of fifty patients have facial insensitivity, others facial sense perceptions are right.

CONCLUSIONSThe effect of the operation of retrogasserian combing is sure. This operation was applicable to any case of trigeminal neuralgia, especially to the cases that no vascular compression was found in the operations.

Adult ; Aged ; Decompression, Surgical ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Neurosurgical Procedures ; methods ; Treatment Outcome ; Trigeminal Nerve ; surgery ; Trigeminal Neuralgia ; surgery

OBJECTIVETo study the possible relationship between coronary artery lesions and fibrinogen Bbeta-148 C/T polymorphism in children with Kawasaki disease.

METHODSFast blood samples were taken from 36 children with Kawasaki disease (21 had coronary artery lesions) and 49 age- and gender-matched healthy children (control group). Plasma levels and molecular reactivity of fibrinogen were measured with Assist Plasma Fibrinogen Activity Assay System. Polymerize chain reaction and restriction enzyme digestion were used to detect the genotypes of fibrinogen Bbeta-148C/T gene polymorphism.

RESULTSThe plasma fibrinogen levels in patients with coronary artery lesions were significantly higher than those in patients without coronary artery lesions and in the control group. T allele frequency in patients with Kawasaki disease was significantly higher than that in the control group. The patients with coronary artery lesions had more increased T allele frequency compared with the patients without coronary artery lesions.

CONCLUSIONSPlasma fibrinogen levels and fibrinogen Bbeta-148C/T polymorphism are associated with coronary artery lesions in children with Kawasaki disease.

Child, Preschool ; Coronary Artery Disease ; etiology ; Female ; Fibrinogen ; analysis ; genetics ; Gene Frequency ; Genetic Predisposition to Disease ; Genotype ; Humans ; Infant ; Male ; Mucocutaneous Lymph Node Syndrome ; complications ; genetics ; Polymorphism, Genetic

OBJECTIVETo establish a HPLC-MS-MS determination method of artemether (ARM) and active derivatives DHA, and compare the pharmacokinetic parameters of ARM after transdermal and oral administration.

METHODThe mice were divided two groups (transdermal and oral) by parallel design. ARM and active derivatives DHA in plasma of mice at different sampling time were determined. The pharmacokinetic parameters were calculated by DAS 2.0 and by statistic analysis.

RESULTcompare oral administration, the pharmacokinetic parameters of ARM after transdermal, Cmax Tmax , AUC(0-t) MRT, had significant difference (P < 0.05).

CONCLUSIONThe artemether patch has long-releasing property.

Administration, Cutaneous ; Administration, Oral ; Animals ; Artemisinins ; administration & dosage ; blood ; metabolism ; pharmacokinetics ; Calibration ; Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; administration & dosage ; metabolism ; pharmacokinetics ; Male ; Mice ; Mice, Inbred ICR ; Sensitivity and Specificity ; Tandem Mass Spectrometry

OBJECTIVETo investigate the complex differences between high metastatic and low metastatic cells of the Adenoid cystic Carcinoma.

METHODSGene expression patterns were examined in high metastatic cell ACC-M strain and low metastatic ACC-2 strain with the method SSH (suppression subtractive hybridization).

RESULTSalthough extensive similarity was noted between the expression profiles, twelve genes were highly expressed of, in low metastatic cell ACC-2 tester, compared with driver, high metastatic cell ACC-M. These genes were cysteine-rich angiogenic-inducer protein (cyr61), chromosome7 clone RP11-52501, G protein, was family member Iferritin heavy polypeptide I, jumping translocation breakpoint, eukaryotic translation elongation, folate receptor, ribosomal proteins L7a, S21, P0 and other two novel genes-ACC metastasis-associated RNH and ACC metastasis-associated suspected protein. GenBank accession number were AF522024 and AF522025 respectively.

CONCLUSIONSthe result suggests that the obtainment of the ability of metastasis is related to the low expression or mutation of these genes. These data provide insight into the extent of expression differences underlying metastasis-related genes that may prove useful as diagnostic or prognostic markers.

Base Sequence ; Blotting, Northern ; Carcinoma, Adenoid Cystic ; genetics ; secondary ; Cell Line, Tumor ; Gene Expression Profiling ; Humans ; Molecular Sequence Data ; Reverse Transcriptase Polymerase Chain Reaction

Objective To establish a model of acute gouty arthritis( AGA) in rats and observe its maintenance time. Methods The AGA model of rats was established by injecting monosodium urate ( MSU) at the concentration of 25 mg/mL into the ankle joint cavity. The rats were observed for 8 d at different time points. Skin temperature, degree of joint swelling, gait, inflammatory cells in synovial fluid, histopathological changes of synovial tissue and other indicators were observed to determine whether the modeling and maintenance time were successful. Results At 3 h after modeling, differ-ences in the swelling of ankle joint, increase of skin temperature, abnormal gait, the number of inflammatory cells in syno-vial fluid, synovial hyperplasia, capillary congestion, and disarrangement of synovial cells in the rats were observed in the saline group and the model group (P <0. 01). At 4 hours after modeling, the above mentioned inflammatory changes in the saline group were significantly reduced, compared with that at 3 h, showing a significant difference (P<0. 01), while the inflammatory changes of the model group were increased significantly compared with that at 3 hours ( P<0. 01 ) , and showed significant difference compared with the saline group (P<0. 01). At 24 h after modeling, the indexes in the rats of saline group returned to normal, but the inflammation of the model group was increased. At 48-72 h after modeling, the local inflammation such as ankle swelling, skin temperature, and abnormal gait of the rats in the model group reached a peak. The inflammation of the ankle joint in the model group was gradually reduced from 96 to 168 h after the model was established, but there were still significant differences in the indexes compared with the blank group (P<0. 01). At 192 h after modeling, the joint swelling, skin temperature and abnormal gait of the rats in the model group returned to normal, however, there were significant differences in the number of inflammatory cells and the pathological changes of synovial membrane compared with the blank group ( P<0. 01 ) . Conclusions A rat model of AGA can be successfully prepared and identified at 4 h after modeling by injection of MSU crystal suspension into the ankle joint cavity. This rat model of AGA can be maintained at least 168 hours after modeling.

AIM:To investigate the effects of baicalein on pulmonary arterial hypertension(PAH)induced by monocrotaline(MCT)in rats,and its molecular mechanism was further explored.METHODS: Male SD rats(n=28) were randomly divided into 4 groups: control group, MCT group, MCT+baicalein 50 mg/kg group and MCT +baicalein 100 mg/kg group.The PAH model was established by subcutaneous injection of MCT.After 2 weeks of modeling,the rats in baicalein treatment groups were gavaged baicalein 50 and 100 mg· kg -1· d-1for 14 d,the rats in control group were administered with saline.After 4 weeks of modeling,right ventricular systolic pressure(RVSP),right ventricular hypertro-phy index(RVHI)and right ventricular mass index(RVMI)were detected.Masson staining was used to detect the degree of lung fibrosis.The pathomorphological changes of the pulmonary vessels were observed by HE staining.Western blot was used to detect the expression of α-smooth muscle actin(α-SMA)in the lung tissue and the phosphorylation p 38,ERK and JNK in the artery.RESULTS:Compared with the control group,RVSP, RVHI and RVMI increased significantly in the MCT group(P<0.01).Pulmonary fibrosis and the thickening of pulmonary artery wall were observed.α-SMA was up-regulated and p38,ERK and JNK was activated significantly(P<0.01).Compared with the MCT group,baicalein(50 and 100 mg/kg)significantly decreased the RVSP,RVHI and RVMI(P<0.01).Lung fibrosis was reduced and the vas-cular wall thickening was decreased in baicalein-treated groups.Baicalein(50 and 100 mg/kg)inhibited the phosphoryla-tion of p38,ERK and JNK compared with the MCT group(P<0.01).CONCLUSION:Baicalein ameliorates MCT-in-duced PAH by the inhibition of pulmonary artery wall thickening at least partially via MAPK signaling pathway.

Aim To investigate the effect of baicalein on the reversal of multidrug resistance ( MDR) media-ted by breast cancer resistance protein ( BCRP) in hu-man breast cancer MCF-7/MX cells, and explore the possible mechanisms. Methods MTT assay was per-formed to determine the cytotoxicity of baicalein and susceptibility of chemotherapeutic drugs. The protein expression levels of BCRP, p-p38 MAPK and NF-κB p65 were determined by Western blot. Results MCF-7/MX cells were not only resistant to MX but cross-re-sistant to 5-FU and DDP, and the resistance index was 70. 45, 6. 68 and 21. 47, respectively. 2. 5, 5μmol· L-1 of baicalein could increase the sensitivity to above chemotherapeutic agents and decrease the expression levels of BCRP, p-p38 MAPK and NF-κB p65 in MCF-7/MX cells. Conclusion Baicalein can effec-tively reverse MDR of MCF-7/MX by down-regulating BCRP expression through p38/MAPK and NF-κB path-ways.

Objective To investigate the protective effect and mechanism of environmental enrichment(EE)on radiation induced cognitive dysfunction in mice.Methods A total of 45 female Kunming mice(2-month old)were randomly divided into control group,irradiation group and irradiation plus EE group with 15 in each group.Irradiation group and irradiation plus EE group were treated with a single dose of 4 Gy whole body irradiation,irradiation plus EE group were housed in EE condition for 35 d after irradiation.The object recognition task was used to evaluate the cognitive function of mice.The expression of microglial marker IBA-1 in hippocampus was determined by immunohistochemical staining.The expressions of CD68 and synaptophysin(SYP)proteins in hippocampus were assayed by Western blot.Results Compared with control group,the irradiation group had a low discrimination ratio in object recognition task and had a remarkable low level of SYP expression in hippocampus(t＝3.66,6.84,P＜0.05).In addition,radiation activated microglia in hippocampus by increasing the number of IBA-1-positive cells and enhancing the expression of CD 68(t ＝6.83,5.79,P ＜0.05).Compared with irradiation group,irradiation plus EE group increased the discrimination ratio and the expression of SYP in hippocampus(t＝3.56,4.06,P＜0.05),while the number of IBA-1-positive cells and the expression of CD68 were significantly reduced(t＝7.69,4.59,P＜0.05).Conclusions A single dose of 4 Gy whole body irradiation leads to cognitive dysfunction in mice,while EE could effectively improve the animals′cognitive behavior possibly by inhibiting microglial activation and preventing synapse loss in hippocampus.