Unlike other vulnerable groups, rehabilitation is the most urgent problem to be resolved for the disabled. Good working onrehabilitation for the disabled is the foundation to improve the basic living condition and enhance the ability to participate in the society, andcommunity-based rehabilitation is the key to achieve "Rehabilitation for All" for the disabled. The goal "Rehabilitation for All" can beachieved only if "rehabilitation in community and service in family" be reached.

Medical biochemistry is a very important basic curricular in medicine teaching.But its theory is abstract,so it is difficult for teachers to teach.On the other hand,the students feel it hard to learn too,because they don't know how these theories are applied.We have applied case-based teaching in medical biochemistry teaching.These methods effectively improve students' enthusiasm to study and to train their scientific thinking in preliminary.Following this way we have explored a new way to elevate teaching qualities and search new teaching model and to further reform present medical biochemistry teaching model.

Aim:To develop a practical chiral CE method for the quantitative determination of the unwanted enantiomer[( R )-enantiomer]presented in zolmitriptan. Methods:The background electrolyte was 20 mmol/L sodium dihydrogenphosphate solution with 1% S-β-CD,adjusted to pH 3.50 with phosphoric acid. A fused-silica capillary(60 cm×50 μm ID,effective length 51.5 cm)was used at 20 ℃ for the separation. The applied voltage was -30 kV. The samples were loaded by hydrodynamic injection(50 mbar pressure,6 s). UV was measured at 220 nm. Results:Zolmitriptan and its chiral impurity were baseline resolved ( R s=6.66). The linearity was good over the concentration range from 4 to 80 μg/mL( r =0.999 8) of ( R )-enantiomer. The injection precision (expressed as CV%) was 2.83%. The average recovery was 99.97%( n =9). The limit of detection was 1.5 μg/mL. The host-guest complex binding constants were 964 and 905 mol-1 for ( R )-enantiomer and zolmitriptan,respectively. Conclusion:The method is suitable for the determination of ( R )-enantiomer in zolmitriptan and binding constants of zolmitriptan enantiomers to S-β-CD.

ObjectiveTo investigate left ventricular (LV) radial dyssynchrony and LV rotational change of isolated complete left bundle branch block (CLBBB) and CLBBB with heart failure (HF).Methods Twenty-six isolated CLBBB patients,twenty-four CLBBB patients with HF and twenty healthy controls were studied.Two-dimensional speckle tracking imaging (2D-STI) was applied to short-axis views to calculate LV radial dyssynchrony and LV rotational and twist degree and time to peak rotational and twist degree.ResultsLV radial dyssynchrony and LV rotation and twist degree were intermediately damaged in isolated CLBBB patients and was significantly damaged in CLBBB patients with HF,compared with healthy controls.ConclusionsFor isolated CLBBB patients,even if LV ejection fraction was in the normal range,another parameters of cardiac mechanic had changed and 2DSTI could be used to evaluate these alterations.

OBJECTIVE To re-evaluate Bifidobacterium from microecological point of view. METHODS With the development of microecology,it is paid more and more attention to the medical field.The genesis and development of diseases were closely related with microbe imbalance.As a kind of common microbial population in intestinal tract,Bifidobacterium are one of the most important sources for the exploitation of microecological preparation.Bifidobacterium were re-evaluated by the reference review method. RESULTS This review is focused on the current situation,bioactivity,clinical application,and prospective of Bifidobacterium. CONCLUSIONS Bifidobacterium have good application prospects.

Neutrophil extracellular traps (NETs) are fibrous structures released by neutrophils and the formation process is called NETosis. NETs participate in the host innate immunity. Recent research has found that NETs is a double-edged sword. Under normal conditions, the formation of NETs can play a role in clearing pathogens and maintain the host homeostasis. However, when NETs are overproduced or not cleared in time, they can take part in the pathogenesis of many diseases. This article reviewed the formation of NETs, the mechanisms involved in NETosis and the role of NETs in the secretion of multiple cytokines in different diseases.

Objective To explore the status and economic burden of falls in elderly people living in an urban community and tO provide evidence for prevention of falls in the elderly. Methods A cross-section study was conducted in a community in Beijing.A total of 1512 persons aged 60 years and over were selected with stratified cluster sampling,and the data about falls within the past 12months,the consequences and the direct economic burden were collected by face-to-face interview.Results The overall incidence of falls was 18.0%within 1 year among 1512 interviewees.Of the participants,8.7%(131 cases)suffered from injuries of falls(143 times)and 77.6%(111 times)adopted the corresponding treatments.Direct economic burden caused by falls totaled 741.82 yuan per fall,including direct medical cost 650.77 yuan per fall,and 244.76 yuan per fall should be paid by the elderly themselves.In 143 times of falls,74.8%recovered and a few(5 cases)had complications and disability accordingly. Conclusions The incidence of fall in an urban elderly community of Beijing is high and will cause huge economic burden.

Tramadol and its metabolites in rat urine were identified by LC-MS(n). Rat urine samples of 0-36 h were collected after ip 9.0 mg x kg(-1) tramadol, then the samples were enriched and purified through solid-phase extraction cartridge. Purified samples were analyzed by LC-MS(n). Possible metabolites were discovered by comparing the full scan and SIM chromatograms of the test samples with the corresponding blanks and analyzing the retention time, quasi-molecular ion and fragment ion of all chromatograms. Nine phase I metabolites and four phase II metabolites were identified in rat urine. One of the metabolites was found first time in living body. The metabolites were formed via the following metabolic pathways: O-demethylation, N-demethylation, hydroxylation, N-oxidation and conjugation. The method can be used to identify tramadol and its metabolites in other animals and human.

Objective To evaluate the patterns of intracardiac flow of left ventricle (LV) in patients with premature ventricular complexes (PVCs) from the right ventricular outflow tract (RVOT) by analyzing the vortex during isovolumetric contraction phase and the distribution rules of flow-time curves in each layer of LV.Methods Twenty-seven patients with frequent isolated PVCs from RVOT were involved and 25 healthy subjects as control.The color Doppler image of LV at apical four-chamber view was acquired.Vector flow mapping (VFM) was performed to assess the parameters of vortex during isovolumic contraction phase, including diameter (transverse and vertical diameter), velocity (maximal positive and negative velocity) and the number of vortex rings.Positive flow during systole and negative flow during diastole of LV in each layer were measured by flow-time curve.All values of patients with PVCs were recorded during sinus beats (PVC-S) and PVC (PVC-V) respectively.Results Significant differences were demonstrated in all parameters of vortex between the PVC-V and control subjects.And the flow-time curves disarrayed in PVC-V.The velocity of vortex in PVC-S was lower than that in control subjects.And the distribution pattern of flow-time curves in LV of PVC-S differed from that of control subjects.Conclusions Alternation of intracardiac fluid pattern in LV was demonstrated in patients with PVCs from RVOT during both sinus beats and PVC.VFM can be used to analyze the intracardiac flow field in normal and pathological electrical activation.

Objective To establish a fluorosis model induced by coal burning and in ameloblasts of rat offsprings.Methods High fluoride air model was established based on the burning coal habit of the epidemic areas.Fluoride feed was made of corn dried by coal burning.Thirty-six SD rats were divided into 3 groups by random number table method according to body weight in a male and female ratio of 2 ∶ 1∶ in the high fluoride air room and rats were feed food with fluorine at 40 mg/kg (high fluoride group),25 mg/kg (low fluoride group);in the normal air room and rats were feed food with fluorine at 0 mg/kg (the control group),12 rats in each group.Mating litter in a ratio of 2 ∶ 1 at the end of 8 weeks.The offsprings were killed on postnatal day 3 and 7 to make mandible sections.Specimens were prepared for light microscope examination to observe the morphological changes of ameloblasts in the tooth germ.Results At the end of 0,2,4,6 and 8 weeks,serum fluoride of the high fluoride group were (0.031 ± 0.003),(0.060 ± 0.006),(0.085 ± 0.006),(0.110 ± 0.007) and (0.134 ± 0.008) mg/L;serum fluoride of the low fluoride group were (0.031 ± 0.003),(0.046 ± 0.005),(0.077 ± 0.006),(0.091 ± 0.007) and (0.104 ± 0.007) mg/L;serum fluoride of the control group were (0.030± 0.003),(0.037 ± 0.002),(0.044 ± 0.002),(0.046 ± 0.003) and (0.049 ± 0.003) mg/L.At the end of 2,4,6 and 8 weeks,serum fluoride of high fluoride group and low fluoride group were significantly higher than that of control group (all P ＜ 0.05).At 7 d,offspring rats in high fluoride group,adamantoblasts were in distortions and vacuole changes,but offspring rats in low fluoride group and the control group had no abnormality.Conclusion By providing rat with high fluoride air and food,we could establish a fluorosis model induced by coal burning in ameloblasts of rat offsprings.