Objective To explore the expression of TLR4 and MyD88 in chronic renal failure and its role in the development of chronic renal failure.Methods 40 cases of patients diagnosed chronic renal failure during 2011.07~2014.05 were select-ed as observation subjects,and renal tissues without invasion of 40 cases patients with renal carcinoma resection were chosen as control.The expression of TLR4 and MyD88 in chronic renal failure was detected by IMH.The mice model was stabled establish through gavage of adenine (200 mg/kg).And the TLR4 and MyD88 expression was detected by RT-PCR and Western blot.The models was divided into three groups:TLR4 blocking group,TLR4 non-blocking and control group.And the BUN and CRE were detected by biochemical analyzer in three groups.Results The expression of TLR4 and MyD88 were higher in chronic renal failure than in normals.The TLR4 and MyD88 were also higher in chronic renal failure model mice.The levels of BUN (15.65±3.97 mmol/L)in TLR4 blocking group were lower than which in TLR4 non-blocking group (23.33±7.62 mmol/L)and which in IgG group (26.33±6.77mmol/L)(t=2.887,P=0.045).The CRE levels were the lowest in TLR4-blocking group (523.89 ± 52.67μmol/L)compared with the TLR4 non-blocking group (789.51 ± 98.17μmol/L)and the IgG group (809.51±94.19μmol/L)(t=4.125,P=0.015).Conclusion The increased expression of TLR4 and MyD88 in chronic renal failure significantly would promote the development of chronic renal failure.

Objective: : This study aimed to investigate the changes and significance of microRNA155 levels in serum of patients with cerebral small vessel disease (CSVD). Methods: : Thirty patients with CSVD who met the inclusion criteria were selected and divided into eight patients with lacunar infarction (LI) group and 22 patients with multiple lacunar infarction (MLI) combined with white matter lesions (WML) group according to the results of head magnetic resonance imaging (MRI). Thirty samples from healthy volunteers without abnormalities after head MRI examination were selected as the control group. The levels of serum microRNA155 in each group were determined by real-time polymerase chain reaction, and the correlation between microRNA155 in the serum of patients with CSVD and the increase of imaging lesions was analyzed by Spearman correlation analysis. Results: : Compared with the control group, the serum microRNA155 level in the LI group, MLI combined with WML group increased, the difference was statistically significant (p<0.05); serum microRNA155 level was positively correlated with the increase of imaging lesions (p<0.05). Conclusion : The change of serum microRNA155 level in patients with CSVD may be one of its self-protection mechanisms, and the intensity of this self-protection mechanism is positively correlated with the number of CSVD lesions.

Objective To compare the cortical activation characteristic in the healthy subjects and hemiplegia patients during execut-ing treadmill walking with visual feedback(TWVF). Methods From August to November,2021,eight stroke patients with right hemiplegia(patient group)and eight healthy subjects(healthy group)in Fifth Hospital of Xiamen were recruited.Both groups wore functional near-infrared spectroscopy(fNIRS)caps and executed TWVF,respectively.Experimental block design for walking modes in-cluded the preparation period(10 s)and task period(five cycles of"step 30 s-rest 30 s").The cortical activation(β values)were measured.The regions of interest(ROI)included the pre-motor cortex(PMC),supplementary motor area(SMA),primary motor cortex(M1),primary somatosensory cortex(S1)and sensorimotor cortex(SMC,M1+S1). Results No activation in bilateral M1,and some significant activation(P<0.05)in the left hemisphere SAM,PMC and S1,were found during walking in the healthy group.M1 was activated more in the unaffected(right)hemisphere than in the affected(left)hemisphere during walking in the patient group(P<0.05),and less PMC activation was found(P<0.05).M1 in bilateral hemispheres,SMA in the unaffected hemisphere and PMC in the affected hemi-sphere were activated more in the patient group than in the healthy group(P<0.05). Conclusion The locomotor network of SMC-PMC-SMA are activated more in the hemiplegic patients than in the healthy pepole during walking.M1 are almost not activated in the healthy people during walking,and compensa-torily activated in M1 of the unaffected side in the hemiplegic patients.