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Objective:To explore the relationship between executive function and gait in cases of mild amnestic cognitive impairment (aMCI).Methods:Twenty aMCI hospital patients formed an observation group, while 20 healthy counterparts were the control group. Both groups underwent the Tinetti test, followed by the " normal walking" single-task test and the " normal walking + Go/No-go" dual-task test. The pace, step width, stride length, Go/No-go task response time and accuracy rate were recorded.Results:In the single-task test, there was no significant difference in pace or stride width between the two groups, but the average stride length of the observation group (1.11±0.04)cm was significantly shorter than that of the control group. However, in the dual-task test, the average pace time (0.96±0.08)sec and stride length (1.02±0.06)cm of the observation group were significantly smaller than the control group′s averages, while their step width (0.11±0.02)cm was significantly wider. There was no significant difference between the two groups in the response time in a single (Go/No-go) task, but in the dual-task test, the observation group′s average time was significantly longer than the control group′s and the accuracy was significantly poorer. Both the error rate and the non-response rate were significantly higher than among the control group.Conclusions:Mild amnestic cognitive impairment reduces stride length and pace when walking and impairs executive function.
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<p><b>BACKGROUND</b>To evaluate the significance of flow cytometry (FCM) in the analysis of multi-drug resistance of doxorubicin.</p><p><b>METHODS</b>The level of doxorubicin or Rh-123 in S-180R and BGC-823/DOX, which were two cell lines with different drug resistance, was measured by FCM comparatively and continuously.</p><p><b>RESULTS</b>The total fluorescence profile peaks of S-180R, a high resistant cell line, were predominantly different from those of S-180, the parent cell line, by the FCM analysis. The subtle fluorescence profile differences between BGC-823/DOX (a low resistant cell line) and the parent cell line were quantitatively measured on the FCM map. The changes of each resistant cell fluorescence from the S 180R cells could be displayed by continuous tests, the more near the fluorescence level of each cell was, the more the fluorescence pike of whole cells centralized.</p><p><b>CONCLUSIONS</b>FCM is a sensitive, accurate and quantitative test in the analysis of doxorubicin drug resistance.</p>
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Objective To study the role of fibroblasts in the pathomechanisms of renal interstitial fibrosis(RIF). Methods Growth behavior and apoptos, of renal interstitial fibroblasts in cultures, established using renal biopsies of casts with and without RIF, were studied. Results There were significant alterations in the growth behavior, the differentiation pattern of potentially mitotic fibroblast populations and programmed cell death in cultures derived from kidneys with RIF, as compared with cultures of normal origin. Conclusion The abnormal growth and apoptosis of fibroblasts may play an im-portant role in RIF. Inhibiting the proliferation and promoting the programmed death of fibroblasts may be benificial to patients with RIF.