24 h(all P

OBJECTIVE: To analyze the latency of posture evoked response of normal lower limb muscle in different stimulations and explore its influencing factors. METHODS: The normal lower limb was induced to produce postural evoked response by the dynamic posturography through two kinds of perturbations, the supporting surface rotation stimulation (Toes-up and Toes-down) and the horizontal perturbation stimulation (Forward and Backward). The latencies of tibialis anterior muscle and gastrocnemius muscle were recorded by surface electromyography acquisition system. The differences of the left and right limb, gender and height on the latency of postural evoked response were analyzed. RESULTS: (1) Under the Toes-up and Backward perturbation, the latency of tibialis anterior muscle was longer than gastrocnemius muscle; under the Toes-down and Forward perturbation, the latency of gastrocnemius muscle was longer than tibialis anterior muscle. (2) The latencies of left limb and right limb had no significant difference. (3) The latency in male was longer than that in female. (4) The latency gradually increased with the increase of height. CONCLUSION In the postural evoked response, different perturbations, gender and height have significant impacts on the latency of posture evoked response of lower limb muscle. However, the effect of height and gender should be not considered referring to the same individual.
Electromyography ; Female ; Humans ; Lower Extremity ; Male ; Muscle, Skeletal/physiology* ; Posture

OBJECTIVETo compare anatomical differences between subinguinal and ilioinguinal approaches for the treatment of acetabular fracture and investigate clinical therapeutic effect of subinguinal approach.

METHODSSeven fresh human bodies were chosen, comparative study were performed on the right and left side on the same specimen. Ilioinguinal approaches were adopted on the left and subinguinal were adopted on the right. Inner part of incision started to sun wild above pubic symphysis at 2 cm, and lateral incision ranged from iliac to anterior superior spine about 5 cm. Length and transverse diameter of the first window exposed and lliopsoas freeness were tested and compared. Fifteen acetabular fracture patients treated through subinguinal approach were compared from May 2010 to August 2012. Among all patients, including 12 males and 3 females aged from 20 to 65 years old with an average of 40.6 years old. Matta criteria were used to evaluate clinical outcomes.

RESULTSLength and transverse diameter of the first window exposed and lliopsoas freeness through subinguinal approach were better than through ilioinguinal approach (P<0.01). In 15 patients with acetabular fracture, 10 patients obtained anatomical reduction and 10 patients got satisfied reduction in accordance with Matta criteria. X-ray results of all patients were excellent.

CONCLUSIONCompared with ilioinguinal approach, subinguinal approach could enlarge visualization of the first window and simplify surgical procedure. It is an ideal approach to expose anterior and anterior-medialis wall of acetabulum and anterior hip capsule.

Acetabulum ; injuries ; surgery ; Adult ; Aged ; Female ; Fracture Fixation ; methods ; Fractures, Bone ; surgery ; Groin ; Humans ; Male ; Middle Aged

The clinical characteristics of patients who presented in poor clinical grade due to ruptured middle cerebral artery aneurysms (MCAAs) associated with large sylvian hematomas (SylH) were analyzed and an ingenious designed prophylactic hinged craniectomy was introduced. Twenty-eight patients were graded into Hunt-Hess grades IV-V and emergency standard micro-neurosurgeries (aneurysm clipping, hematoma evacuation and prophylactic hinged craniectomy) were performed, and their clinical data were retrospectively analyzed. 46.43% of the patients reached encouraged favorable outcomes on discharge. The favorable outcome group and the poor outcome group significantly differed in terms of patients' anisocoria, Hunt-Hess grade before surgery, extent of the midline shift and time to the surgery after bleeding (P<0.05). There were no significant differences in age, sex, volume and location of the hematoma, size of aneurysm between the favorable and poor groups (P>0.05). However, ingenious designed prophylactic hinged craniectomy efficiently reduced the patients' intracranial pressure (ICP) after surgery. It was suggested that preoperative conditions such as Hunt-Hess grading, extent of the midline shift and the occurrence of cerebral hernia affect the prognosis of patients, but time to the surgery after bleeding and prophylactic hinged craniectomy are of significant importance for optimizing the prognosis of MCAA patients presenting with large SylH.

Objective To investigate the effects of angiotensin Ⅱ (Ang Ⅱ) on the expression of TLR4 and its role in lipopolysaccharide (LPS)-induced NF-κB activation and CD40 expression in rat peritoneal mesothelial cells (RPMCs). Methods RPMCs were harvested from Spragne-Dawley rat peritoneal cavity and maintained under defined in vitro condition. The cells were treated with Ang Ⅱ at different concentrations (10-9, 10-8, 10-7, 10-6 mol/L) and exposed to Ang Ⅱ (10-7 mol/L) for different times (1, 2, 4, 8, 12, 24, 48 h for mRNA and 6, 12, 24, 36, 48 h for protein, respectively). Meanwhile, the influence of AT1 receptor antagonist (AT1R, losartan, 10-5 mol/L) and AT2 receptor blocker (AT2R, PD123177, 10-5 mol/L) on the TLR4 induced by Ang Ⅱ was observed. After synchronization for 24 hours, the cells were randomly assigned to four groups: the control group, the Ang Ⅱ (10-7 tool/L) group, the LPS (1 mg/L) group, the Ang Ⅱ (10-7 mol/L) plus LPS (1 mg/L) group, which were used to investigate the effects of Ang Ⅱ on the NF-κB activation and CD40 expression induced by LPS. The mRNA expression of TLR4 and CD40 was measured by RT-PCR and the protein abundance of TLR4, NF-κB p65, phospho-p65, IKBα and phospho-IκBα were analyzed by Western blot. Immunofluorescence was performed to determine the subcellular localization of p65 subunit of NF-κB. Results (1) Treatment of RPMCs with Ang Ⅱ resulted in a concentration-dependent increase in the expression of TLR4. Ang Ⅱ at 10-9, 10-8, 10-7 and 10-6 mol/L increased TLR4 mRNA expression by 70.5%, 89.5%, 102.9%, and 121.9%, respectively and protein expression by 12.1%, 27.7%, 51.2%, and 41.6%, respectively (P<0.01). Treatment of RPMCs with 10-7 mol/L Ang Ⅱ resulted in a time-dependent increase in the expression of TLR4, with the peak of mRNA expression at 8 and 12 h (P<0.01) and the protein expression at 12 and 24 h (P<0.01). (2) Losartan antagonized Ang Ⅱ-stimulated expression of TLR4 by 33.5% (P<0.05), PD123177 had no such effect (P0.05). (3) Treatment of RPMCs with LPS (1 mg/L) for 60 rain significantly increased the ratio of phospho-IκBα to IκBα by 362.6% (P< 0.01) , phospho-p65 to p65 by 67.4% (P<0.05), and LPS (1 mg/L) for 4 h significantly increased the expression of CD40 mRNA by 299.9% (P<0.01) compared to the control group. In comparison to the LPS (1 mg/L) group, preincubation of RPMCs with AngⅡ (10-7 mol/L) for 24 h then treated with LPS (1 mg/L) for 60 rain significantly increased the ratio of phospho-IκBα to IκBα by 49.1% (P<0.01), phospho-p65 to p65 by 29.3%(P<0.05), and LPS (1 mg/L) for 4 h significantly increased the expression of CD40 mRNA by 56.8%(P<0.01). (4) The p65 subunit of NF-κB was dominantly distributed in the cytoplasm in the control and Ang Ⅱ group. Following exposure to LPS for 60 min, p65 subunit labeling was upregulated and translocated into the nuclei. A significantly increased nuclear staining of p65 in ceils treated with Ang Ⅱ plus LPS were observed. Conclusions Ang Ⅱ induces the expression of TLR4 in dose- and time-dependent manner in RPMCs, resulting in enhanced NF-κB signaling and induction of CD40 expression, Locally produced Ang Ⅱ in the peritoneum may play an amplified role in LPS-induced peritoneal inflammation.

Objective To evaluate the differential expression of lysophosphatidic acid receptor (LPAR) in breast cancer (BC), and its relationship with clinicopathological features of BC patients. Methods The qRT-PCR and immunohistochemical staining were used to detect the LPAR expression in 37 normal tissues, 55 benign disease tissues and 82 BC tissues, besides, the correlation of LPAR expression with clinicopathological data was also analyzed. Results The expression levels of LPAR2 and LPAR3 mRNA and protein in BC tissues were higher than those in normal benign tissues (all P<0.05). LPAR1 mRNA expression had no difference in three tissues (χ2 =1.908, P >0.05). LPAR1 expression was not associated with clinicopathological features in BC tissues (P>0.05). LPAR2 expression in postmenopausal patients was higher than that in premenopausal patients (χ2=4.821, P<0.05). LPAR3 expression was significantly associated with nodal metastasis, estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) in BC tissues (all P<0.05). Conclusion LPAR in BC tissues has differential expression, which is associated with nodal metastasis, ER, PR and HER2.

Objective Triple negative breast cancer(TNBC), a special breast cancer subtype, is lack of effective target therapy.The article aimed to investigate the role of lysophosphatidic acid (LPA) and Hippo Yes-associated protein (Hippo-YAP) signaling pathway in TNBC invasion and metastasis and the mechanisms.Methods The specific small interfering RNA (siRNA) of YAP was synthetized in vitro, and was transfected into MDA-MB-231 cells using liposome transfection.The experiment was divided into YAP-siRNA group, positive control group and blank control group.Each group is provided with 2 parallel holes.Evaluation was made on the effects of each group on Hippo-YAP, the mechanisms and regulation on upstream and downstream molecules of Hippo-YAP pathway.Results In experiment group, YAP content, the capacity of invasion and metastasis after transfection ([0.035±0.005], [2.200±1.000], [3.500±0.800]) significantly decreased compared with positive control group([0.343±0.012], [27.600±5.100], [22.300±5.000]) and blank control group([0.384±0.017], [26.500±4.800], [22.350±6.000]) (P<0.05).YAP expression levels at 60 min, 120 min, and 240 min in experiment group significantly decreased compared with positive control group and blank control group (P<0.05).YAP relative expression levels of 10, 20, 50 μmol/Lwere significantly lower than those of positive control group and blank control group (P<0.05).After respective interference of C3 transferase and Y27623, significant difference was found in the pYAP mRNA contents of experiment group([0.255±0.052], [0.326±0.017]), blank control group([0.048±0.032], [0.534±0.017]) and positive control group([0.052±0.021], [0.528±0.024])(P<0.05).The expression levels of YAP mNA and AREG mNA significantly increased in experiment group([0.176±0.032], [0.263±0.008]) compared with blank control group([0.043±0.013], [0.263±0.008]) and positive control group([0.049±0.025], [0.057±0.043])(P<0.05).Conclusion LPA induces breast cancer invasion and metastasis, which is YAP-dependent, time-dependent and concentration-dependent.LPA-Hippo-YAP singaling pathway may be one of the mechanisms promoting delayed metastasis of TNBC.

Fatty Liver ; diagnosis ; therapy ; Humans ; Non-alcoholic Fatty Liver Disease ; Practice Guidelines as Topic ; United States

Nitrobenzene is one of the toxic compounds. Much work had focused on biodegradation of it sofar. Two main pathways for nitrobenzene biodegradation, oxidative and partial reductive pathways, were reviewed in this article. The mechanism of these pathways including involved enzymes and genes was introduce in details. Comparative analysis of the pathways would provide basis for the development and application of biodegradation technology for nitrobenzene and other organic pollutants.

Objective To study the effect of siRNA of Rab25 on apoptosis induction in ovarian carci- noma cell.Methods According to Rab25 mRNA sequence in the Genebank,the plasmids expressing siRNA against Rab25 were constructed and stably transected into A2780 cells,MTY method were applied to measure cell growth and proliferation.Apoptosis rate and cell cycle phase distribution of A2780 cells were measured by flow cytometry(FCM).Apoptosis was confirmed by agarose gel electrophoresis(AGE)of DNA.Results Cells transected with the plasmids expressing siRNA targeting Rab25 gene effectively decreased cell growth, proliferation;blocked A2780 cells in the G_1 phase of cell cycle and induced cell apoptosis.A typical DNA ladder pattern appeared on AGE.Conclusion Rab25 gene siRNA can inhibit growth and induce apoptosis in ovarian carcinoma cell line,which will facilitate further studies of Rab25 function and its application in the treatment of ovarian cancer.