The quality of sleep has a great relationship with health and working efficiency. The result of sleep stage classification is an important indicator to measure the quality of sleep, and it is also an important way to diagnose and treat sleep disorders. In this paper, the method of detrended cross-correlation analysis (DCCA) was used to analyze sleep stage classification, sleep electroencephalograph signals, which were extracted from the MIT-BIH Polysomnographic Database randomly. The results showed that the average DCCA exponent of the awake period is smaller than that of the first stage of non-rapid eye movement (NREM) sleeps. It is well concluded that the method of studying the sleep electroencephalograph with this method is of great significance to improve the quality of sleep, to diagnose and to treat sleep disorders.
When people are walking, they will produce gait signals and different people will produce different gait signals. The research of the gait signal complexity is really of great significance for medicine. By calculating people's gait signal complexity, we can assess a person's health status and thus timely detect and diagnose diseases. In this study, the Jensen-Shannon divergence (JSD), the method of complexity analysis, was used to calculate the complexity of gait signal in the healthy elderly, healthy young people and patients with Parkinson's disease. Then we detected the experimental data by variance detection. The results showed that the difference among the complexity of the three gait signals was great. Through this research, we have got gait signal complexity range of patients with Parkinson's disease, the healthy elderly and healthy young people, respectively, which would provide an important basis for clinical diagnosis.
We carried out study on surface electromyogram (sEMG) signal generated from cluster muscles in trunk and lower limbs on condition of human body walking with heavily burdened shoulder to explore functional status and fatigue property of human muscles and to offer an important reference for finding better ways of loading, improving the performance and design of backpack as well as weight-bearing system more suitable for ergonomics. We measured and obtained surface electromyography signals from the primary muscles clusters in neck, shoulder, back and leg of 20 test recipients loaded with different burdens on their shoulders. The eigenvalue of mean power frequency (MPF) were processed with SPSS 16.0. It could be concluded that with the increase of loading weights, male are more likely to be fatigued due to dramatic decrease of trapezius' MPF. While for the female test recipients, the cervical extensor muscles' MPF dropped significantly and were more easily fatigued. Moreover, there was a remarkable difference in terms of electromyography signal before and after the weight reaches certain limit (P<0.05) . The maximum weight limit loaded on shoulders for man is 12% of the total bodyweight while such limit for woman is just 9%.
ObjectiveTo investigate the expression and clinical significance of octamer-binding transcription factor 4(Oct-4) in gastric cancer (GC) tissues with meta-analysis. MethodsPubMed, EMBASE, Web of Science, CBM, VIP, CNKI, and WanFang Database were searched from their establishment to Oct.2012 for related studies, to investigate the relationship between expression of Oct-4 and the clinicopathological characteristics of GC.After evaluating methodo-logical quality of studies that met the inclusion criteria, RevMan 5.1 software was used to data analysis. ResultsEight studies which enrolled 623 cases of GC were identified.The results of the meta-analysis showed that, as for the positive expression rate of Oct-4, there were significant differences between GC tissues and normal stomach tissues (OR=37.50, 95% CI: 4.76-295.51, P < 0.01), as well as the cell differentiation (OR=0.27, 95% CI: 0.16-0.45, P < 0.01), for that the positive expression rate of Oct-4 in low differentiation of gastric cancer tissues was higher than those of moderate-high differentation group.But there were no significant differences between GC tissues with lymph node metastasis and non-lymph node metastasis (OR=2.09, 95% CI: 0.63-6.94, P=0.23), as well as Ⅰ-Ⅱ stage and Ⅲ-Ⅳ stage (OR=0.62, 95% CI: 0.25-1.54, P=0.30) of GC tissues. ConclusionsOct-4 may participate in the whole course of carcinogenesis of GC, but the relationship between expression of Oct-4 and lymph node metastasis as well as the TNM stage of GC is unclear, which needs more high quality studies to explore the question clearly.
ObjectiveTo explore the effect of the serum high mobility group box-1 (HMGB1) on oncosis of pancreatic acinar cells in the rat with severe acute pancreatitis (SAP). MethodsThirty-two healthy SD rats were randomly divided into 2 groups:sham operation group (SO group, n=8) and SAP group (n=24). Rats of SO group were only flipped the intestinal canal after laparotomy, but rats of SAP group were induced by retrograde injection of 3% sodium taurocholate into bilio-pancreatic duct in addition. Rats of SO group were sacrificed at 6 hours after operation, and rats of SAP group were sacrificed at 6 (SAP-6 hour group, n=8), 12 (SAP-12 hour group, n=8), and 24 hours (SAP-24 hour group, n=8) after operation respectively. Pancreatic tissues were stained by HE to observe pathological changes. Serum HMGB1 was measured by ELISA, and the oncosis percentage of pancreatic acinar cells was examined by flowcytometry. ResultsPathological results showed that structural integrity was observed in pancreatic acinar, and occasionally a single inflammatory cell infiltration was observed in rats of SO group. Swelling, interstitial edema, and inflammatory cell infiltration were observed in rats of SAP-6 hour group. Some necrosis of pancreatic acinar cell, stromal vascular congestion, and focal necrosis were observed in rats of SAP-12 hour group and SAP-24 hour group, which the pathological damage were worse over time. Levels of serum HMGB1 and oncosis percentages of pancreatic acinar cells in rats of 3 SAP subgroups were all higher than those of SO group (P < 0.01), and the 2 kinds of indexes both increased over time (P < 0.05). There was positive correlation between concentration of serum HMGB1 and oncosis percentages of pancreatic acinar cells in SAP rat during 24 hours after operation (r=0.846, P < 0.01). ConclusionsHMGB1 seems to play an important role in SAP by inducing oncosis of pancreatic acinar cells when inducing inflammatory reaction in rat with SAP.
目的 探讨瘢痕或皮肤肿瘤切除后创面使用皮能快愈敷料（PELNAC，商品名：皮耐克）结合自体刃厚皮覆盖的治疗效果。 方法 回顾分析2010年1月－2013年1月收治的两组瘢痕或皮肤肿瘤切除术后创面分别使用不同皮片覆盖的治疗效果。A组6例，采用PELANC与自体刃厚皮片复合移植；B组10例，采用自体中厚皮片移植修复。随访近期、远期，对比评估两组创面存活的皮片外观，弹性；供皮区愈合情况。 结果 两组患者皮片完全成活，外观好，弹性佳，较术前明显改善。与B组相比，A组供皮区愈合时间短，愈合后色素沉着轻微，无明显疤痕形成。 结论 采用PELNAC与自身刃厚皮片复合移植修复瘢痕或肿瘤切除后创面，既能够显著改善外观、功能，达到理想的创面修复效果，又不会造成供皮区的继发性瘢痕增生，是一种理想的创面修复方式。
ObjectiveTo compare the analgesic effect of different treatment for herpes zoster neuralgia, and optimize herpetic neuralgia treatment. MethodsWe collected hospital inpatient data with herpes zoster by the First Military Medical Case Management System between January 1st, 2009 and December 20th, 2013. All the patients were divided into five groups according to different treatments. Patients in group A accepted valaciclovir capsules and doxepin hydrochloride tablets; patients in group B accepted valaciclovir capsules; patients in group C accepted valaciclovir capsule, nefopam hydrochloride tablets and doxepin hydrochloride tablets; patients in group D accepted valaciclovir capsules and nefopam hydrochloride tablets; patients in group E accepted valaciclovir capsules and non-steroidal anti-inflammatory drugs (including nimesulide capsules and ibuprofen sustained-release capsules). We collected such statistic data as sex, age, time of onset, time of pain disappearing after treatment. Then, we analyzed the difference among the groups on the time of pain disappearing. ResultsThere were 336 cases compliant with the standard in all the 898 cases of medical record data. The number of the patients was 72, 86, 66, 60 and 52; while the pain disappearing time after treatment was (5.94±2.54), (8.60±3.09), (5.77±1.85), (5.80±1.96) and (6.86±2.18) days, respectively in group A, B, C, D and E. Pain disappearing time after treatment of group B was significantly different from groups A, C, D, and E (P<0.05); group E was significantly different from groups A, C, and D (P<0.05); there was no significant difference between group A and groups C and D, and between group C and D (P>0.05). ConclusionThe combination of nefopam hydrochloride tablets, doxepin hydrochloride tablets, nimesulide capsules, and ibuprofen sustained-release capsules is effective in the treatment of herpes zoster neuralgia. The use of nefopam hydrochloride tablets with doxepin hydrochloride tablets is more effective than the combination of nimesulide capsules and ibuprofen sustained-release capsules. Doxepin hydrochloride tablets are not significantly different from nefopam hydrochloride tablets. Nefopam hydrochloride tablets and doxepin hydrochloride tablets are not associated with increased efficacy.
ObjectiveTo evaluate the long-term effectiveness of lunate excision and vascularized capitate osteotomy transposition for advanced Kienböck's disease. MethodsBetween June 2004 and January 2008,16 patients with Kienböck disease in Lichtman stages ⅢB-IV were treated with lunate excision and vascularized capitate osteotomy transposition.There were 10 males and 6 females at the age of 27-59 years (mean,38.8 years).The disease was caused by trauma in 10 cases,and unknown reason in 6 cases.The main clinical symptoms were pain and limited activity of the wrist joint,and the disease duration was 5-32 months (mean,26.5 months).The carpal height index was 0.88±0.05; the radioscaphoid angle was (63.8±9.1)°.The visual analogue scale (VAS) score,range of motion (ROM),grip strength,Evans score,and radiographic changes were used to assess the effectiveness during follow-up. ResultsAll patients obtained healing of incision by first intention and were followed up 5 years and 4 months to 9 years (mean,5.8 years).VAS score was 2.0±1.5 at the final follow-up.The ROM of the flexion and extension of the wrist joint at the affected side were significantly less than those at the normal side (P<0.05).However,no significant difference was found in the grip strength and Evans score between the affected side and normal side (t=-0.997,P=0.327; t=-1.852,P=0.077).Postoperative radiographs showed that the carpal height index was 0.94±0.03,and the radioscaphoid angle was (48.4±4.8)°,which were improved significantly when compared with preoperative ones (t=-3.927,P=0.000; t=5.987,P=0.000).Osteophyte at the dorsal side of the radius and scaphoid rotation occurred in 6 cases and 2 cases,respectively. ConclusionLunate excision and vascularized capitate osteotomy transposition is a reliable method for advanced Kienböck's disease,with favorable improvement in wrist pain and grip strength for long-term follow-up.
ObjectiveTo systematically review the tumor necrosis factor-α (TNF-α) -308G/A polymorphism and the risk of inflammatory bowel disease (IBD). MethodsAll eligible case-control studies published up to Jan 25th 2015 were identified by searching PubMed, EMbase, CNKI, WanFang Data, CBM and VIP databases. Two reviewers independently screened the studies according to the inclusion and exclusion criteria, extracted data and assessed methodological quality of included studies. Then, meta-analysis was performed using RevMan 5.2 and Stata 12.0 softwares. ResultsA total of 20 studies involving 2 860 IBD cases and 5 033 controls were included. The results of meta-analysis showed:Compared with the wild genotype GG, genotype GA, AA and genotype GA+AA were associated with susceptibility of ulcerative colitis (UC) (GA vs. GG:OR=1.45, 95%CI 1.02 to 2.07, P=0.04; AA vs. GG:OR=2.01, 95%CI 1.32 to 3.05, P=0.001; GA+AA vs. GG:OR=1.51, 95%CI 1.07 to 2.13, P=0.02); Compared with genotype GA+AA, genotype AA increased the risk of UC (AA vs. GA+GG:OR=1.92, 95%CI 1.26 to 2.91, P=0.002); allele A did not increase the risk of UC; Compared with genotype GG, genotype AA increased the risk of Crohn disease (CD) (AA vs. GG:OR=1.49, 95%CI 1.07 to 2.08, P=0.02); Compared with genotype GA+GG, while genotype AA increased the risk of CD (AA vs. GA+GG:OR=1.50, 95%CI 1.08 to 2.09, P=0.02); genotype GA, GA+AA and allele A did not increase the risk of CD. In stratification analyses by ethnicity, we found that the TNF-α-308G/A was significat associated with IBD in Europeans. ConclusionCurrent evidence indicates that TNF-α-308G/A polymorphism is associated with the susceptibility of IBD, genotype GA, AA and GA+AA increase the risk of suffering from UC while genotype AA increase the risk of suffering from CD. Due to the limited quantity of the included studies, more researches are needed to verify the above conclusion.
ObjectiveTo investigate the application of fast track surgery (FTS) in hepatobiliary surgery, and discuss the postoperative stress response and its efficacy and safety assessment. MethodsA total of 171 patients undergoing different hepatobiliary operations in our ward from August 2008 to Jule 2011 were randomly divided into control group (n=89) and FTS group (n=82). Patients in the FTS group received the improved methods while those in the control group received traditional care. A series of indicators such as hospital stay, hospital expense, duration of intravenous infusion, postoperative complications, and the C-reaction protein (CRP) and interleukin-6 (IL-6) levels in serum were observed postoperatively. ResultsFor the FTS and control group, the first exhaust time was respectively (2.4±0.3) and (3.3±0.6) days, postoperative hospital stay was (9.1±2.7) and (14.1±4.1) days, hospitalization expense was (16 432±3 012) and (21 612±1 724) yuan, all of which had significant differences (P<0.05). Before surgery and on the 1st, 3rd, 5th and 7th day after surgery, IL-6 serum level for the FTS group was respectively (8.57±2.58), (30.21±12.44), (17.41±11.73), (11.14±7.12), and (10.50±5.19) ng/L, and for the control group was respectively (9.13±2.99), (51.31±19.50), (36.82±12.33), (28.23±9.18), and (15.44±4.33) ng/L. There was no significant difference in the preoperative IL-6 level between the two groups (P>0.05), while IL-6 level was significantly lower in the FTS group than the control group after surgery (P<0.05). Before surgery and on the 1st, 3rd, 5th and 7th day after surgery, CRP serum level for the FTS group was respectively (18.41±4.01), (69.74±26.03), (45.52±20.50), (39.14±11.23), and (29.03±6.47) μg/L, and for the control group was respectively (17.74±2.11), (99.23±23.50), (86.81±17.34), (68.22±15.60), and (37.70±9.55) μg/L. There was no significant difference in the preoperative CRP level between the two groups (P>0.05), while CRP level was significantly lower in the FTS group than the control group after surgery (P<0.05). Postoperative complication rate after surgery was not significantly different between the two groups (P>0.05). ConclusionThe application of FTS in some hepatobiliary operations is effective and safe by decreasing the stress response.