Objective: To study and evaluate a new internal capsule hemorrhage animal model. Methods: We established an internal capsule hemorrhage animal model using Horseley-Clarke technique. Internal capsule was orientated referring to Sawyer rabbit brain stereotaxic atlas. The model was duplicated by injecting 0.5 ml autologous arterial blood into hind limb of internal capsule. We used HE stain to observe the changes of brain tissues. Then somatosensory evoked potential, and intracranial pressure were measured. Results: Obvious hematoma was detected in brain tissues under light microscopes. The latency of N1 and P1 in somatosensory evoked potential prolonged and the peak-to-peak value of N2-P1 decreased. Meantime intracranial pressure increased. Conclusion: We established an internal capsule hemorrhage animal model successfully. Histopathologic changes of the brain tissues and abnormal somatosensory evoked potential were found. We observed an increase in intracrnial pressure. These can provide the reference for the study of intracerebral hemorrhage.

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The purpose of this study was to examine whether group intensive rehabilitation (GIR) can significantly improve lower limb functional outcome in patients early after stroke compared to routine rehabilitation (RR). Ninty-four patients were enrolled in this study who received GIR, individual intensive rehabilitation (IIR) or RR. Lower limb motor function was assessed using the Fugl-Meyer Assessment of Motor Recovery (FM). Dependence was recorded using the Modified Barthel Index (MBI), which is an index of daily living activities (ADL). Measures were taken before treatment and 3 weeks later respectively. Socioeconomics significance was assessed using rehabilitation cost-effectiveness ratio (CER). GIR and IIR produced greater gains than RR both in lower limb FM (p<0.01, p<0.01, respectively) and MBI (p=0.007, p=0.026, respectively) at 3 weeks after intervention. There were no significant differences both in FM and MBI score changes of lower limb between GIR and IIR (p=0.365, p=0.782, respectively). GIR had lower CER than IIR and RR (p<0.01, p<0.01, respectively). There were significant differences in CER between the three groups. Subjects in GIR had lower CER compared with those in IIR and RR (p<0.01, p<0.01, respectively). Patients receiving GIR or IIR could make greater gains than those receiving RR in lower limb motor function and ADL early after stroke, while there were no differences between those receiving GIR and IIR, which indicated that this beneficial effect was attributed to higher intensity of therapy, but had nothing to do with group factors. GIR may be a pragmatic, effective and economical method for patients early after stroke allowing for the optimal utilization of resources.

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CD34+ cell is attached with CD34 molecule which is a cluster of differentiation molecule presented on certain cells within the human body. The number of circulating CD34 progenitors has significantly increased in peripheral blood of brain during the fast hematopoietic recovery. CD34+cells can survive, migrate and differentiate towards astrocytes or neurons after transplantation. Moreover, they improve the neurological recovery after cerebral artery occlusion. CD34 molecule is a cell surface glycoprotein and functions as a cell-cell adhesion factor. It may also mediate the attachment of stem cells to bone marrow extracellular matrix or directly to stromal cells. This review is about the factors that lead to CD34+ cell proliferation in in-vivo or in-vitro.

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In recent years, hematopoietic stem cells to repair damage well, especially in the CD34 positive cells as the representative of the hematopoietic cell become a research hotspot, but the CD34 positive cells in the body content low, how to get a large number of CD34 positive cells become one of the difficulties of CD34 positive cells. This article reviews the methods commonly used to collect CD34 isthmic cells now, convenient for researchers to find a suitable or find new research methods.

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