Objective To explore the effect of proprioceptive neuromuscular facilitation (PNF) on balance function of stroke patients in community. Methods 204 stroke patients in community were divided into control group (n=98) and observation group (n=106). The control group accepted routine rehabilitation and the observation group received PNF additionally. Fugl-Meyer Assessment of lower extremities (FMA), Berg Balance Scale (BBS) and static balance locator were used to evaluate the motor and balance function before and 3 months after treatment. Results The scores of FMA and BBS were higher after treatment than before (P<0.05) in both groups, and were higher in observation group than in control group (P<0.05). The length of path (L), covered area (A) and L/A were less in observation than in control group (P<0.05) both in the eye-open and eye-closed modes. Conclusion PNF can improve the lower extremities motor and balance function of stroke patients in community.

Objective To investigate the effect of gradient heat stress on phagocytosis of hepatic Kupffer cells (KCs) in vitro in rats. Methods Rat Kupffer cells were isolated in vitro and the temperature for gradient heat stress was set at 37, 39, 41 and 43℃. After thermal stimulation, cell injury was detected by PI and Hochest33342 staining. CCK-8 assay was used to investigate difference in cellular proliferation rate over 24h between the groups. Flow cytometry was used to investigate the influence of heat stress on the phagocytosis of KCs. Results Compared to the normal control group, cells in each heat stress group exhibited varying degrees of damage, especially cells in 43℃ group. The ratio of damage cells increased with the increase of heat stress severity (P<0.05). Proliferation assay indicated that the proliferation rate of cells in each heat stress group was significantly decreased in comparison with normal control group 6h after heat stress (P<0.05). After 12h recovery, decrease in proliferation rate was observed only in 43℃ group (P<0.001), and no difference in the rate of proliferation could be observed between the heat stress groups and normal control group after 24h recovery. Flow cytometry showed, that the phagocytosis of KCs decreased in heat stress groups compared with control group, especially in 43℃ group (P<0.05). This phenomenon disappeared after 24h recovery. Conclusion Heat stress can inhibit the phagocytosis of rat liver KCs through its cytotoxic effect on KCs, and subsequently inhibits its proliferative ability. Further investigation of the effect of heat stress on KCs may help understand the pathogenesis of heat stress.

Objective To detect the differentially expressed microRNAs (miRNAs) in bladder cancer tissue and normal bladder tissue. Methods Total RNA was extracted from bladder cancer tissue and normal bladder tissue by Trizol, and then miRNAs were isolated and enriched from the total RNA. Mammalian miRNA microarrays were used to analyze the differentially expressed miRNAs between the bladder cancer tissue and normal tissue. Data analysis was performed by software of LuxS-can3. 0 and SAM version 2. 1. Choose let-7 gene which was interesting to us, and validation of mi-croarray results was carried out by northern blotting. Results Compared with normal bladder tissues, there were 71 differentially expressed miRNAs in bladder cancer tissue, of which there were 38 down-regulated ones and 33 up-regulated ones. Among these miRNAs, 26 miRNAs were the most significant with 12 up-regulated and 14 down-regulated. The expression of let-7 gene in bladder cancer was down-regulated to normal bladder tissue by northern blotting, which was in agreement with the results of the miRNA microarrays. Conclusion There are differentially expressed miRNAs between bladder cancer tissue and normal bladder tissue, and let-7 gene is probably as a tumor suppressor in bladder cancer.

Diabetic cognitive dysfunction,a glucose metabolic disorder,is caused by metabolic,neurochemistrical,morphological,electrical physiological and behavioral changes featuring the disability of reasoning and learning,memory loss,inattention and hypophrenia.In recent years,more attention has been attached to the field of medicine.In this review,a progress of cognitive disorder was systematically explored over the pathogenesis and treatment of both TCM and western medicine,and investigated multi-targets and multiple methods of Chinese herbal researches at multiple stages for expanding the range of clinical application of TCM,enriching and developing the theory of TCM compatibility,and promoting the advantages of TCM syndrome differentiation.

Objective The aim of our study was to develop a robust LC-MS/MS method for determination of MN and NMN in blood plasma.Methods A liquid chromatography -tandem mass spectrometric ( LC-MS/MS) method was used, with signal linearity, lower limits of quantitation, precision and accuracy being evaluated.The study recruited 126 healthy volunteers, and MN and NMN in blood plasma were determined.At the same time samples from 21 patients ( 17 pheochromocytoma, 4 ectopic pheochromocytoma) , a hypertension group of 108 persons, and a control group of 84 persons were analyzed. A paired T test was used to compare the MN and NMN levels between the different groups.Results The performance characteristics for the method in terms of linearity, lower limits of quantitation, precision and accuracy were verified.Significant differences were found between the concentration levels of MN and NMN in the diseased and healthy groups.Conclusion A robust and reliable LC-MS/MS method for the determination of MN and NMN in blood plasma has been developed and was shown to be suitable for clinical application.

Objective To investigate the role of interleukin-17 (IL-17) in spinal dorsal horns in neuropathic pain (NP) in rats and its effect on activation of astrocytes.Methods In vivo experiment Sixty-four male SPF Sprague-Dawley rats,aged 6-8 weeks,weighing 180-200 g,were randomly divided into 3 groups using a random number table:control group (group C,n =16),sham operation group (group S,n =24) and group NP (n =24).The animals were anesthetized with intraperitoneal pentobarbital sodium,the L5,6 spinal nerves of the left side of the rat were gently separated and exposed,tightly ligated with 5-0 silk suture and transected.In group S,the L5,6 spinal nerves of the left side of the rat were only exposed.In group C,no operation was performed.Mechanical pain threshold was measured at day 1 before operation and days 1,3,5,7,10 and 14 after operation.The expression of IL-17,IL-6,IL-1β and tumor necrosis factor-alpha (TNF-α) mRNA in the spinal dorsal horn was determined using quantitative real-time PCR at day 7 and day 14 after operation.At day 7 after operation,the activation of astrocytes in the spinal dorsal horn was detected.In vitro experiment Primarily cultured astrocytes of neonatal rats were randomly divided into 4 groups using a random number table:control group (group C,n=22),10 ng/ml IL-17 group (I10 group,n=18),50 ng/ml IL-17 group (I50 group,n-18) and 100 ng/ml IL-17 group (I100 group,n=22).In I10,I50 and I100 groups,the astrocytes were incubated with the culture medium containing 10,50 and 100 ng/ml IL-17,respectively.The proliferation of astrocytes was detected by MTT at 24,48 and 72 h of incutation or culture.The expression of IL-6,IL-1β and TNF-α mRNA was determined using quantitative real-time PCR.Results In vivo experiment Compared with group C,the mechanical pain threshold was significantly decreased at 3-14 days after operation,the expression of IL-17,IL-6 and IL-1β mRNA in the spinal dorsal horn was up-regualted at 7 days after operation,and the activation of astrocytes was increased in group NP,and no significant change was detected in the mechanical pain threshold at each time point after operation in group S.In vitro experiment Compared with group C,the proliferation of astrocytes was significantly increased at 48 h of incubation in I10 and I50 groups,the proliferation of astrocytes was significantly increased at 48 and 72 h of incubation,and the expression of IL-6 and IL-1β mRNA was up-regulated in I100 group,and no significant change was found in the proliferation of astrocytes in group S.Conclusion Up-regulated expression of IL-17 in spinal dorsal horns may be involved in the maintenance of NP,and the mechanism is related to promoted activation of astrocytes and induced inflammatory responses in rats.

Objective To explore the neuroprotective mechanism of propofol by comparing the influence of propofol and isoflurane on inflammatory cytokines ( TNF-α、IL-1、ICAM-1 ) in patients with intracranial tumors. Methods One hundred and sixty-eight patients with intracranial neoplasm were randomly divided into two groups:the propofol ( Group P) and isoflurane (Group I),84 cases in each. Patients were given with propofol (3-6 μg·mL-1) by plasma target-controlled infusion or with continuously inhaled isoflurane ( 1%-2%) , respectively. The serum levels of TNF-α, IL-1 and ICAM-1 were detected before anesthesia and at 0,24,and 48 h after operation. Results The serum levels of TNF-α,IL-1 and ICAM-1 were significantly increased after operation as compared to baseline in both groups. The serum level of TNF-α was(69. 11±8. 95) and (76. 26±11.28) μg·mL-1,IL-1 was(21.57±3.19) and (29.58±4.38) ng·L-1,and ICAM-1 was (1.63±0.24)and (1.94±0.29) g·L-1 at 24 h post operation in Group P and Group I,respectively. These inflammatory cytokine levels were significantly higher in group I compared to group P at 24 and 48 h after operation (P<0. 05 or P<0. 01). Conclusion The target-controlled infusion of propofol brings about lower level of inflammatory reaction than isoflurane inhalation in patients with intracranial neoplasm,which may attribute to the mechanism of brain protection against injury.

Objective To explore the risk factors in post-polypectomy hemorrhage in rectum and to discuss the appropriate interventions.Methods A total of 313 patients with 373 polypi were included in this study. The clinical data were analyzed by SPSS 16 software. Results There were 313 patients with colorectal polypus curatively resected and 373 polypi in total.There were 11 (3.5％) patients subjected to post-polypectomy hemorrhage in rectum.Regression analysis showed that the independent risk factor of postpolypectomy hemorrhage in rectum was the hypertension of patients (P ＜ 0.01 ) and this hemorrhage had no significant correlations with patientg'ender,age,size of polypus,pathological characteristics and the methods of polypectomy.Conclusions Hypertension of patients is an independent risk factor in post-polypectomy hemorrhage.

Objective The brain volume and behavioral performance of emotional memory were measured by combining voxel-hased morphometry (VBM) and behavior to explore the morphological characters of brain regions related to the emotional enhancement effect of memory.Methods A total of 32 healthy young subjects participated in the study.The experimental processes included MR scan and behavioral performance of emotional memory the latter of which involved two phases-encoding and retrieval.Behavioral performance was recorded and the whole-brain 3D MRI data were acquired via 3.0T MR.3D MRI data were segmented by VBM5,and the wholebrain volumes of gray matter,white matter and CSF were produced.SPM5 and SPSS13.0 were used for statistical analysis of the 3D MRI data and behavioral data,respectively.Results Retrieval accuracy of the emotional pictures was higher than that of the neutral pictures ( t =5.08,P＜0.001 ),the emotional enhancement effect was significant ( Δ Pr =0.12 ± 0.01 ).Brain regions related to emotional enhancement effect included bilateral amygdala,dorsolateral prefrontal cortex,middle frontal gyrus,dorsomedial prefrontal cortex,fusiform gyms,right parahippocampus,left orbitofrontal cortex and middle cingulate gyms.Volume ratio of bilateral amygdala were related to emotion enhancement effect evidently (left:r=0.564,P＜0.01 ; right:r=0.541,P＜0.01 ).Conclusion This study morphologically confirms that brain regions,such as amygdale and prefrontal cortex,are critical structures for the enhancement of emotional memory,and further extends the findings of previous functional imaging studies.

OBJECTIVETo analyze the reason and strategy for failure of posterior pedicle screw short-segment internal fixation on thoracolumbar fractures.

METHODSFrom March 2008 to December 2010,the clinical data of 18 patients with thoracolumbar fracture failed in posterior pedicle screw short-segment internal fixation were retrospectively analyzed. There were 11 males and 7 females with an average age of 37.2 years (ranged, 19 to 63). The time from the first operation to complication occurrence was from 6 to 44 months with an average of 14.3 months. Of them,fusion failure was in 7 cases (combined with screw breakage in 4 cases), the progressive neuro-dysfunction was in 5 cases,the progressive lumbodorsal pain was in 6 cases. All 18 patients with kyphosis were treated with anterior internal fixation remaining posterior fixation (9 cases) and anterior internal fixation after posterior fixation removal (9 cases).

RESULTSAll the patients were followed up from 18 to 50 months with an average of 30.5 months. No intetnal fixation loosening and breakage were found, moreover, X-ray and lamellar CT showed bone healing well. Preoperative, postoperative at 3 months and at final follow-up, ODI score was respectively 31.6+/-5.1, 8.6+/-5.7, 8.3+/-3.2; VAS score was respectively 7.2+/-2.3, 2.3+/-0.7, 2.1+/-1.1; kyphosis angle was respectively (-21.2/-+7.8 degreeso, (-5.3+/-6.8 degrees ), (-5.8+/-7.8 )degrees. Compared with preoperative data ,above-listed items had obviously ameliorated(P<0.05).

CONCLUSIONTreatment of thoracolumbar fracture with posterior pedicle screw short-segment internal fixation may result in the complications such as bone nonunion ,internal fixation breakage and progressive kyphosis. Anterior reconstruction may be a good strategy for the failure of posterior operation.

Adult ; Bone Screws ; Female ; Fracture Fixation, Internal ; adverse effects ; methods ; Humans ; Lumbar Vertebrae ; injuries ; surgery ; Male ; Middle Aged ; Postoperative Complications ; etiology ; Retrospective Studies ; Spinal Fractures ; surgery ; Thoracic Vertebrae ; injuries ; surgery