Objective To explore the relationship between injury of corticospinal tract (CST), diffusion anisotropic features of white matter fibers and cerebral infarction prognosis in patients with different ages by MRI and diffusion tensor imaging (DTI). Methods 24 cases of cerebral infarction were divided into 3 groups according to age: Group A (n=8, 45～59 years old), Group B (n=8, 60～74 years old) and Group C (n=8, 75～82 years old). DTI were acquired in the patients on a 3.0 T MR imaging scanner in the first 3 days. Before and 6 weeks af-ter treatment, Fractional anistrophy (FA) value of the infarcted focus and the contralateral corresponding brain tissues were measured, and the nerve function were measured by National Institutes of Health Stroke Scale (NIHSS). Results FA values of the infarcted focus were less than the FA of contralateral corresponding brain tissues (P<0.05) and they were significantly improved 6 weeks after treatment (P<0.05).The NISHH scores of corticospinal tract (CST) 2 were higher than that of CST 1 in each group (P<0.05). The NISHH scores after admission were lower than the scores on admission in the same group and the same CST level. Conclusion DTT can show the relationship between the direction and morphology of the fiber tract and the infarct lesions, which can be used to evaluate the impairment of CST at the early stage of ischemic stroke, favoring the prognostic judgment in the rehabilitative therapy of cerebral infarction.

Objective To study The effect of a early systemic psycho-rehabilitation intervention on patients with post-stroke depression.Methods 80 patients with post-stroke depression were randomly divided into test group (n=40) and control group (n=40) by Hamilton's Depression Scale (HAMD).They were treated conventionally by neurologist. The patients in test group were added systemic psychological intervention administered by psychologist and movement training administered by professional physiatrician. And then the scores to HAMD and CNFDS (clinical neurological functional defect scoring) between two groups were evaluated until 2 weeks or 4 weeks later. Results Nerve function of the both groups was improved,and score to HAMD in the test group was less than that in control group (P

Objective To explore the effect of motor imagery on motor recovery in hemiplegic patients after stroke. Methods From May, 2015 to October, 2016, 40 hemiplegic patients after stroke were randomly divided into control group (accepted routine rehabilitation, n=20) and motor imagery group (accepted motor imagery and routine rehabilitation, n=20). They were assessed with Fugl-Meyer Assess-ment (FMA), modified Barthel Index (MBI) before and six weeks after treatment. Fractional anisotropy (FA) of the focus was measured with diffusion tensor imaging (DTI). Results The scores of FMA and MBI improved in both groups after treatment (t>5.088, P<0.001), and improved more in the motor imagery group than in the control group (t>2.124, P<0.05). The FA reduced in the focus compared with the same site of unaffected side in both groups before treatment (t>3.892, P<0.01), and there was no significant difference between two groups (t<1.144, P>0.05). FA increased in more patients of the motor imagery group (5/5) than in the control group (2/4). Conclusion Motor imag-ery can promote the recovery of motor function and activities of daily living in stroke patients, and may help the recovery of fibers in white matter.

Objective To investigate the change of serum vascular endothelial growth factor (VEGF) in cerebral infarction before and af-ter rehabilitation. Methods Forty-eight patients with first cerebral infarction were enrolled from June, 2014 to August, 2016 in Beijing Bo'ai Hospital. Level of serum VEGF was measured by enzyme-linked immunosorbent assay (ELISA) before and six weeks after rehabilitation. The level of serum VEGF of 33 normal subjects was compared with the patients'. Results The level of serum VEGF was higher in the pa-tients group than in the control group before and six weeks after rehabilitation (t>2.540, P<0.05). The level of VEGF was higher in the large area infarction group (>4 cm) than in the small area infarction group (≤4 cm) (t=4.436, P<0.05), and was higher in the short course (less than one month) infarction group than in the long course (more than one month) group (t=2.316, P<0.05). Conclusion VEGF can be main-tained in high level after rehabilitation.

Objective To investigate the long-term outcome of old stroke patients after rehabilitation. Methods 25 old hospitalized patients with first attack of stroke in recovery were followed up with Mini-mental Status Examination (MMSE), Self-rating Depression Scale (SDS), Self-rating Anxiety Scale (SAS), Brunnstrom stages of hemiplegia, modified Ashworth scale (MAS), range of motion (ROM) in hemiplegic ankle, manual muscle test (MMT) of quadriceps femoris, Berg balance scale (BBS), modified Barthel index (BI) and the Zarit burden interview (ZBI) for caregiver before rehabilitation, discharge, 6 and 12 months after discharge. Results The Brunnstrom stages of lower limbs, MAS of upper limbs improved (P<0.05) after 3-month rehabilitation in hospital, as well as the scores of BBS, BI and ZBI. As 6 and 12 months in home, the limb function remained stable, while the scores of BBS, MMSE, BI, SAS, and ZBI improved, but SDS fluctuated (P<0.05). Conclusion It is important to offer the long-term rehabilitation or consultation service when advocating old stroke patients early return to family or community, including psychological support and intervention.

Objective Sialic acid and its derivatives in mammalian cells mainly include N-acetylneuraminic acid (Neu5Ac), N-glycolylneuraminic acid (Neu5Gc) and deaminoneuraminic acid (KDN), among which Neu5Ac can be catalyzed by cytidine monophospho-N-acetylneuraminic acid hydroxylase (CMAH) for the synthesis of Neu5Gc. In this study, the transcriptional level of CMAH in different tissues of BALB/c mice were determined by relative fluorescence quantitative PCR, to provide a reference for further analysis of Neu5Gc levels in different tissues. Methods The mRNA sequence of CMAH was searched in the NCBI database and specific primers were designed. The mouse β-actin was selected as an internal control, and the transcriptional levels of CMAH in 9 different organ tissues of BALB/c mice were detected by relative fluorescence quantitative PCR using SYBR Green dye. Results Among the 9 mouse organs, the transcriptional level of CMAH in the liver tissue was the highest, which was 2. 46 times higher of that in the spleen, 3. 17 times of the kidney, 5. 14 times of the trachea, 11. 70 times of the lung, 21. 12 times of the myocardium, 31. 37 times of the skeletal muscles, 66. 90 times of the small intestine and 1056. 99 times of the brain tissue, respectively. Conclusions CMAH is transcribed in many organ tissues of mice, and its transcriptional levels vary in a quite wide range.

Objective To study the influence of continuous blood purification(CBP) on cardiac out-put of pediatric patients using bioreactance. Methods Patients underwent CBP in PICU and nephrology ward from March 2014 were prospectively enrolled after approval by ethics committee. CBP therapies were all performed by Fresenius Medical Care hemodialysis machine. Cardiac output values were obtained using the non-invasive cardiac output monitoring ( NICOM) device ( Cheetah Medical). Blood pressure, heart rate, cardiac index(CI) and stroke volume index(SVI) were recorded before the therapy,at the beginning of ther-apy,during the course of therapy,and at the end of each therapy. Results Twenty-one pediatric patients (from 1. 0 year to 15. 5 years) were recruited and 69 treatments were recorded from March 2014 to Decem-ber 2016. The basic CI was 3. 4 (2. 4,6. 1) L/(min·m2),basic SVI was 43 (26,75) ml/(m2·beat). Dur-ing the beginning of therapy,mean arterial pressure(MAP),CI and SVI all dropped from the baseline ( P<0. 001),whereas heart rate increased. During the course of CBP,CI and SVI (were both recorded every 4 hours) kept on dropping and stayed at a relatively lower level. Course CI was 3. 0 (2. 4,4. 6) L/(min·m2) and course SVI was 28 (21,57) ml/(m2·beat). At the end of therapy,CI was 3. 4 (2. 5,5. 3) L/(min· m2),with no significant difference from the baseline CI (P＝0. 073). However,the SVI at the end of therapy was 35 (25,67) ml/(m2·beat),higher than the course SVI but still lower than the basic SVI,the differences were statistically significant ( P<0. 05). Conclusion CI and SVI continue to decline at the beginning of CBP treatment and remain at a lower level throughout the course of treatment. After the therapy, CI has returned to the basic level whereas SVI has not recovered.

Objective To diagnose crossed cerebellar diaschisis (CCD) after supratentorial cerebral infarction with intravoxel incoherent motion (IVIM) magnetic resonance imaging. Methods From May, 2016 to May, 2017, 120 patients with unilateral supratentorial cerebral infarction were divided as CCD positive and CCD negative, and investigated with IVIM. Results The cerebral infarction volume (CIV) was more in CCD positive patients than in CCD negative patients in acute and chronic phase (t>13.943, P<0.05). The apparent diffusion coefficients (ADC) was significantly different between affected and unaffected lateral cerebellar in CCD positive patients (t=11.413, P<0.05), and it was significantly different between CCD positive and negative patients in unaffected lateral cerebellar (t=10.026, P<0.05). Conclusion CIV and ADC can be the indexes of IVIM to evaluate the cerebral perfusion in patients with cerebral infarction.