Objective To develop a kind of algorithm for fall detection based on human acceleration. Methods From September to November, 2017, six healthy postgraduates participating in the experiment completed 13 acts of falls and eleven of activities of daily life. The information of activities was collected through two acceleration sensors, 81 acceleration features were extracted from each sensor, and were reduced dimension through principal component analysis. K-nearest neighbor was used to detect the falls and activities of daily living. Results The sensitivity of fall detection was 100%, the specificity was 99.76%, and the detection time was 216 ms. Conclusion The algorithm of multi-feature fusion of human body acceleration and K-nearest neighbor is accurate and timely.

Carcinosarcoma ; metabolism ; pathology ; surgery ; Common Bile Duct Neoplasms ; metabolism ; pathology ; surgery ; Diagnosis, Differential ; Female ; Humans ; Immunohistochemistry ; Keratins ; metabolism ; Middle Aged ; Vimentin ; metabolism

Objective To observe the time interval changes of the expression of Nogo-A in the intumescentia lumbalis of rats with experimental allergic encephalomyelitis(EAE),and explore the function of Nogo-A in the happening and development of EAE.Methods One hundred and six Wistar rats(female) were randomly divided into 2 groups:EAE group(70 rats)and control group(36 rats).Female Wistar rats were used to make EAE animal models,immunized by fresh cavia cobaya spinal cord homogenate and complete Freund adjuvant(CFA),at the same time,their blood brain barrier permeability was lifted by using pertussis stock solution.The rats those were coincident with the standard of being picked up were divided into 6 groups randomly according to the time of falling ill.In control group,fresh guinea pig spinal cord homogenate was replaced by sodium chloride,and rats were also divided into 6 groups randomly.Immunohistochemistry SP was used to detect expression of Nogo-A.Amyelination was detected by improved acid fuchsin and azulin myelin staining.Results In the control group,differences of Nogo-A expression in the intumescentia lumbalis were not obvious in each time group.In the EAE group,expression of Nogo-A could be observed in each time group,but their quantities were very different in contrast with those in the control group.One day after the rats had clinic symptoms,the expression of Nogo-A decreased to some extent;the third day,it reached the lowest point,and was significantly lower than that in control group(P

Objective To investigate antibiotic resistance of Neisseria gonorrhoeae strains isolated from female patients. Methods:Antimicrobial susceptibility of N.gonorrhoeae to 7 antibiotics was tested by disk diffusion method and penicillinase- producing N.gonorrhea(PPNG)was confirmed by nitrocefin disk.Results:Of the 95 strains collected,38(40%)were found to be PPNG.No resistance to spectinomycin was identified.The susceptibility rate of these isolates to penicillin,tetracycline, and ciprofloxacin were much lower,only from 0% to 2.6%.More than 90% of the isolates were susceptible to cefuroxime, ceftriaxone,and ceftizoxime.Conclusions:Our study suggests that spectinomycin,cefuroxime,ceftriaxone,ceftizoxime are the first choice for treatment of gonorrhea in female patients.

Acupuncture Points ; Acupuncture Therapy ; Diarrhea, Infantile ; therapy ; Female ; Humans ; Infant ; Male ; Scalp

OBJECTIVETo explore protective effects of acupuncture at "Zusanli" (ST 36) on cerebral tissue in rats with sepsis.

METHODSCecal ligation and puncture (CLP) was applied to duplicate the rat model of sepsis. According to random number table, thirty SD rats were divided into a sepsis model group (group A), a sepsis model plus electroacupuncture (EA) group (group B), and a sepsis model plus non-acupoint EA group (group C), ten rats in each one. EA with the same frequency and intensity at "Zusanli" (ST 36) and non-acupoint (0.5 cm laterally to "Zusanli") for 30 min was applied in the group B and group C, respectively. No treatment was given in the goup A. 6 hours after CLP, blood was acquired from abdominal aorta to measure the levels of neuron specific enolase (NSE). Then the rats were sacrificed by abdominal aorta exsanguination to take their cerebral tissue for measuring the levels of tumor necrosis factor-alpha (TNF-alpha) and interleukin-6 (IL-6).

RESULTSSix hours after CLP, the level of NSE was (3.51 +/- 0.39) ng/mL in group B, which was significantly lower than (7.72 +/- 0.64) ng/mL in group A (P<0.05). The level of NSE was (8.02 +/- 0.72) ng/mL in the group C, which had no statistical significance with group A (P>0.05). The levels of TNF-alpha, IL-6 in cerebral tissue in group B were significantly lower than that of group A and C (all P>0.05).

CONCLUSIONEA at "Zusanli" (ST 36) has certain protective effect on septic rat's brain, which has some relationship with decreasing levels of cerebral tissue proinflammatory cytokine and plasma NSE. EA at non-acupoint has no the same action.

Acupuncture Points ; Acupuncture Therapy ; Animals ; Humans ; Interleukin-6 ; immunology ; Male ; Phosphopyruvate Hydratase ; immunology ; Rats ; Rats, Sprague-Dawley ; Sepsis ; enzymology ; immunology ; therapy ; Tumor Necrosis Factor-alpha ; immunology

Objective To investigate the value of the wireless mobile information technology in pre-hospital and in-hospital emergency treatment of severe craniocerebral injury.Methods The clinical data of 55 severe craniocerebral injury patients with using wireless mobile information technology in ambulance from October 2010 to March 2012 (wireless group) and 50 severe craniocerebral injury patients without using wireless mobile information technology in ambulance from April 2009 to September 2010 (traditional group) were enrolled in this study.The scores of Glasgow coma scale,time from injury to being given the exact treatment,and survival rate were compared between two groups.Results The scores of GCS between two groups showed no significant difference(t =0.551,P＞ 0.05).The time from injury to being given the exact treatment in wireless group was significantly shorter than that in traditional group [(1.646 ± 0.499) h vs.(2.085 ±0.573) h,t =4.051,P＜0.05].Comparing to traditional group,the survival rate in wireless group was significantly reduced [78.2％ (43/55) vs.58.0％ (29/50),x2 =4.057,P ＜ 0.05].Conclusions Wireless mobile information technology using in pre-hospital enable in-hospital treatment in advance,shorten the waiting time to get the exact treatment.Wireless mobile information technology is the joint between pre-hospital and in-hospital and enhance the survival rate of severe craniocerebral injury.

Objective To investigate the alterations and molecular mechanism of neural cell apoptosis after frontal lobe sharp injury in infant rats.Methods Brain damage was induced by frontal lobe sharp injury.dUTP nick end labeling(TUNEL) method was used to detect cell apoptosis after brain injury,and immunohistochemistry was used to detect the expression of Bax,Bcl-2 proteins in and around the area of injury,respectively.Results The apoptosis cells were found as early as 1 hour and reached a peak at 24 hours post-injury,then gradually diminished until 120 hours when only few apoptosis cells presented.The expression of Bax and Bcl-2 proteins increased significantly 1 hour after frontal lobe injury.Bax protein reached its peak at 12 hours while Bcl-2 protein reached its peak at 1 hour post-injury.The ratio of Bax to Bcl-2 increased after lesion with peak at 24 hours,and then decreased thereafter.At 120 hours,very weak expression of Bax and Bcl-2 protein detected.There were few Bax and Bcl-2 positive cells in frontal lobe cortex in blank control and sham operation group.Conclusions Cell apoptosis exists after frontal lobe sharp injury in infant rats and the change of the number of apoptotic cells is correlated with time course of post-injury.The ratio of Bax to Bcl-2 may play a vital role in cell apoptosis.

AIM: To investigate the clinical efficacy and safety of intravitreal injection of triamcinolone combined macular grid photocoagulation treatment for macular edema.
METHODS: Totally 150 cases (150 eyes) with macular edema in our hospital from July 2009 to November 2013 were selected, which were randomly divided into study group (75 cases, 75 eyes) and control group (75 cases, 75 eyes) . The cases in control group were treated with macular grid photocoagulation treatment, those in the study group used triamcinolone acetonide combined macular grid photocoagulation treatment. Best corrected visual acuity ( BCVA ) , parallel optical coherence tomography ( OCT) and fundus fluorescein angiography (FFA) were detected before treatment, after treatment 7d, 1, 3, and 9mo.
RESULTS:After the treatment, patients' vision were significantly improved in two groups (P<0. 05). In the study group 7d, 1, 3, and 9mo after operation, the visual acuity was better than the control group and preoperative (P<0. 05); fovea macular neurosensory layer thickness decreased significantly (P<0. 05). In the control group, the point omentum macular neurosensory retinal thickness was not statistically significant at 7d, 1, 3, and 9mo after operation compared with before treatment (P>0. 05). Fovea macular neurosensory retinal thickness in the study group was significantly lower than that in control group (P<0. 05). Intraocular pressure of 7 cases in the study group increased slightly, and were normal after treatment.
CONCLUSION: Triamcinolone acetonide combined macular grid photocoagulation treatment is accurate, can effectively improve the visual acuity, reduce macular edema, it is safe and reliable, and suitable for clinical application.