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1.
Article in Chinese | WPRIM | ID: wpr-883993

ABSTRACT

Objective:To investigate the neural mechanism of long-term exposure to high altitudes environment on the processing stage of perceptual closure.Methods:A cross-sectional study was conducted. Thirty college students who first entered the plateau area (at an altitude of 3 658 m) and had lived in high-altitude areas for two years were selected as high altitude group (HA group), and 29 college students matched in age, gender and education level who had never been to the plateau area were selected as sea level group (SL group). The differences of basic physiological parameters were compared between the two groups.The face pairwise comparison paradigm was applied in the subjects of the two groups and the differences between the two groups were compared by event-related potentials (ERPs) technology. SPSS 22.0 software was used for statistical analysis, and the mean ± standard deviation was used for statistical description. Independent sample t test was used for comparison of physiological data between the two groups, and repeated measurement variance analysis was used for ERP data. Results:The physiological results revealed that the HA group had a higher pulse rate((86.71±10.82)/min, (75.97±11.28)/min ; t=-3.19, P=0.002) and diastolic blood pressure than the SL group ((75.93±9.19)mmHg, ( 68.59±11.42) mmHg ; t=-3.20, P=0.002). The oxygen saturation level was significantly lower than that of SL group ((90.77±2.25)%, (98.31±1.56) %) ; t=14.00, P<0.001). In the face pairwise comparison paradigm test, the main effect of P1 latency of ERP was significant.Compared with SL group, HA group showed significantly shortened latency of P1 ((105.10±15.59) ms, (128.35±14.40)ms, P<0.001). The main effect of group of N170 amplitude was significant, HA group was larger than that of SL group((-7.57±3.83) μV, ( -5.11±3.26) μV, P=0.005). The interaction effect between group and hemisphere of NCL amplitude was significant ( F(1, 57)=9.72, P=0.003). Simple effect test showed that the amplitude on the right hemisphere of SL group was significantly larger than that on the left hemisphere((0.46±1.31) μV), (1.16±1.33) μV ). The latency of P1 was significantly correlated with heart rate( r=-0.46, P<0.01), oxygen saturation level( r=0.64, P<0.01) and diastolic blood pressure( r=-0.26, P=0.049). Conclusion:After long-term exposure to high altitude, the neural response related to early visual perception is faster. More psychological resources are recruited during the face structural encoding stage. Contra-lateral compensating effect appeares in the stage of perceptual closure.

2.
Article in Chinese | WPRIM | ID: wpr-909503

ABSTRACT

Alzheimer's disease (AD) is one of the major diseases that harmful to healthy elderly, and mild cognitive impairment (MCI) is the early clinical stage of AD. There is a lag in the clinical diagnosis of both diseases. An objective and reliable auxiliary diagnostic method is urgently needed to provide early diagnosis and differential indicators for AD and MCI, to predict the probability of individuals suffering from AD and MCI transforming into AD, and to reduce the overall incidence of AD and reduce the huge medical and economic burden for the country and society. Event-related potential is widely used in AD and MCI, and the resolution at the millisecond level can truly reflect the time course of cognitive processing and the degree of impairment of cognitive function in patients. In this study, we investigated the differences in the amplitude and latency of ERP components in healthy elderly, MCI and AD patients, and the correlation between ERP components and cognitive impairment. Early N170 and P200 showed high sensitivity and specificity in differentiating MCI from healthy elderly or MCI from AD. The late perception-related ERPs also showed high sensitivity and specificity in differentiating healthy elderly from MCI/AD. The differences in ERPs between MCI and AD may be related to the etiology, the degree of disease progression and the site of brain damage. The specific brain mechanism still need to be further explored and will be the focus of future research. With the progress of the research, the relationship between the specific ERP manifestations and the mechanism of brain injury as well as the impairment of cognitive function will be more clear. It is believed that the application of ERP in clinical will bring more benefits to AD and its early clinical MCI.

3.
Article in Chinese | WPRIM | ID: wpr-909476

ABSTRACT

Objective:To investigate the effect of bilateral repetitive transcranial magnetic stimulation (rTMS) on the pre-attentive processing of methamphetamine addicts.Methods:Forty methamphetamine addicts were screened and equally divided into the intervention group and the control group by random number table method.The intervention group was treated with bilateral simultaneous stimulation with 10 Hz on the left DLPFC and 1 Hz on the right DLPFC with 7 days of continuous intervention.The same scheme was used to intervene the control group, but with pseudo-stimulation. The changes of amplitude and latency of mismatch negative wave(MMN) before and after intervention were compared. SPSS 24.0 software was used for statistical analysis. Independent sample t-test was used for inter group comparison, and paired sample t-test was used for intra group comparison before and after intervention. Results:Before rTMS, there were no significant differences in MMN(F3, Fz, F4) amplitude (intervention group: (-0.90±0.28)μV, (-0.98±0.19)μV, (-0.96±0.19)μV; control group: (-0.92±0.21)μV, (-0.89±0.20)μV, (-0.94±0.16)μV)and latency(intervention group: (184.16±33.07)ms, (179.20±25.35)ms, (184.95±28.22)ms; control group: (184.91±26.96)ms, (180.99±25.29)ms, (181.55±23.19)ms) between the two groups (all P>0.05). After the intervention, there were significant differences in MMN(Fz, F4) amplitude(intervention group: (-1.38±0.16)μV, (-1.17±0.19)μV; control group: (-0.91±0.17) μV, (-0.99±0.16)μV) between the two groups (both P<0.01), but there were no significant differences in MMN (F3) amplitude(intervention group: (-1.01±0.59)μV; control group: (-0.80±0.50)μV), and in MMN (F3, Fz, F4) latency(intervention group: (177.38±26.45)ms, (172.17±23.87)ms, (179.84±23.60)ms; control group: (182.08±24.95)ms, (177.94±21.30)ms, (179.18±21.62)ms)between the two groups (all P>0.05). There were statistically significant differences in MMN( Fz, F4) amplitude (before-intervention: (-0.98±0.19)μV, (-0.96±0.19)μV; after-intervention: (-1.38±0.16)μV, (-1.17±0.19)μV)before and after intervention in the intervention group (both P<0.05), but there was no significant difference in MMN(F3) amplitude(before-intervention: (-0.90±0.28)μV; after-intervention: (-1.01±0.59)μV)before and after intervention in the intervention group ( P>0.05), and there were statistically significant differences in MMN(F3, Fz, F4) latency (before-intervention: (184.16±33.07)ms, (179.20±25.35)ms, (184.95±28.22)ms; after-intervention: (177.38±26.45)ms, (172.17±23.87)ms, (179.84±23.60)ms)before and after intervention in the intervention group(all P<0.05). After pseudo-stimulation, there were no statistically significant differences in MMN( F3, Fz, F4) amplitude(before-intervention: (-0.92±0.21)μV, (-0.89±0.20)μV, (-0.94±0.16)μV; after-intervention: (-0.80±0.50)μV, (-0.91±0.17)μV, (-0.99±0.16)μV)and latency (before-intervention: (184.91±26.96)ms, (180.99±25.29)ms, (181.55±23.19)ms; after-intervention: (182.08±24.95)ms, (177.94±21.30)ms, (179.18±21.62)ms) before and after intervention in the control group (all P>0.05). Conclusion:After repeated transcranial magnetic stimulation, the pre-attentive processing of the intervention group is improved, which shows that bilateral simultaneous stimulation of the rTMS program is effective.

4.
Article in Chinese | WPRIM | ID: wpr-867142

ABSTRACT

Objective:To investigate the relationship between lexical semantic processing abnormalities and cognitive function and clinical symptoms in schizophrenia based on the activation diffusion model and semantic distance.Methods:All subjects matched with demographic data were randomly divided into experiment group( n=27) and control group( n=30). The semantic distance of words of different semantic categories and lexical categories were assigned at a level of 1-7.The semantic distance between the two groups was analyzed by repeated measures of variance, and the correlation analysis was conducted on the scores of the MATRICS Consensus Cognitive Battery (MCCB) and positive and negative syndrome scale (PANSS) in the experimental group. Results:The main effects of the groups in semantic distance were statistically significant( F(1, 55)=7.460, P=0.008, ηp2=0.981). The semantic distance in the experimental group (3.672±0.105)was lower than that in the control group (4.068±0.100). The main effect of the semantic category was statistically significant( F(1, 55)= 833.37, P<0.01, ηp2=0.938), and the semantic distance in the relative condition (1.965±0.074) was lower than that in the unrelative condition(5.775±0.117). Under the relative condition, concrete semantic deviation was negatively correlated with the total score of MCCB( r=-0.405, P=0.036)and speech learning ( r=-0.569, P=0.002). Abstract semantic deviation was negatively correlated with speech learning( r=-0.429, P=0.026). Under the unrelative condition, concrete semantic deviation was negatively correlated with MCCB total score ( r=-0.597, P=0.001), speech learning( r=-0.399, P=0.039)and other dimensions.Abstract semantic deviation was negatively correlated with MCCB total score( r=-0.593, P=0.001) and speech learning( r=-0.285, P=0.050). Under the relative condition, the abstract semantic deviation was positively correlated with the general symptom scale score( r=0.448, P=0.019). Under the unrelative condition, abstract vocabulary semantic deviation was positively correlated with PANSS total score( r=0.120, P=0.010), negative scale score( r=0.047, P=0.030) and general symptom scale score ( r=0.306, P=0.010). Conclusion:The semantic distance of lexical processing is abnormal in schizophrenia. The semantic deviation is related to the cognitive function index and symptom index.

5.
Article in Chinese | WPRIM | ID: wpr-797111

ABSTRACT

Objective@#To investigate the potential risk factors for influencing renal recovery at discharge in critically ill patients with acute kidney injury (AKI) requiringcontinuous renal replacement therapy (CRRT).@*Methods@#This was a single-center, retrospective study. Critically ill patients with AKI requiring CRRT adimitted to the Department of Intensive Care Unit (ICU) in Taizhou Municipal Hospital, Zhejiang province, from June 2014 to December 2017 were included and divided into two groups according to the status of renal recovery at discharge as renal recovery group and renal non-recovery group. The data of acute physiology and chronic health evaluation Ⅱ (APACHEⅡ) score and sequential organ failure assessment (SOFA) score at adimission to ICU, initial serum creatinine (initial SCr) and lactate level and initial estimated glomerular filtration rate (initial eGFR) at time of AKI diagnosis, and total time of RRT and duration of anuria before CRRT were analyzed. Length of ICU stay and length of hospital stay in both groups were also analyzed. Multivariate logistic regression was taken to analyze the potential risk factors for influencing renal recovery at discharge in critically ill patients with AKI.@*Results@#A total of 115 critically ill patients with AKI requiring CRRT were included, of which whom 45 cases were in renal recovery group and 70 cases were in renal non-recovery group, and the renal recovery rate at discharge was 39.1%(45/115); 59 patients were dead during hospitalization and the hospital mortality was 51.3%(59/115). Compared with renal non-recovery group, renal recovery group have a lower value of APACHEⅡ score [(21.73 ± 2.66) scores vs. (23.19 ± 4.41) scores, P=0.03), SOFA score [(11.02 ± 2.22) scores vs. (12.79 ± 2.82) scores, P=0.001], lactate level [(3.82 ± 1.34) mmol/L vs. (4.47 ± 1.52) mmol/L, P=0.021], initial SCr [(2.151 ± 0.677) mg/dl vs. (2.505 ± 0.792) mg/dl, P=0.015], duration of anuria before CRRT[(11.80 ± 4.71) h vs. (19.11 ± 5.98) h, P=0.005] and total time of RRT [(8.64 ± 3.42) d vs. (15.81 ± 5.07) d, P=0.001], and have a higher value of initial eGFR [(36.26 ± 14.74) ml/(min·1.73 m2) vs. (30.07 ± 10.38) ml/(min·1.73 m2), P=0.009]. In addition, length of ICU stay [(12.58 ± 4.78) d vs. (15.30 ± 5.45) d, P=0.007] and length of hospital stay [(19.58 ± 6.44) d vs. (22.11 ± 5.90) d, P=0.032] in renal recovery group were also significantly lower than those in renal non-recovery group. Multivariate logistic regression analysis indicated that SOFA score (OR=0.700, 95% CI 0.521-0.941, P=0.018), duration of anuria before CRRT (OR=0.782, 95%CI 0.689-0.888,P < 0.01) and total time of RRT (OR=0.673, 95% CI 0.565-0.801; P < 0.01) were independent risk factors influencing renal recovery at discharge in critically ill patients with AKI, and initial eGFR was a independent protective factor.@*Conclusions@#As to critically ill patients with AKI requiring CRRT, there are many factors that affect renal recovery at discharge,. SOFA score, duration of anuria before CRRT and total time of RRT are independent risk factors, and initial eGFR is an independent protective factor.

6.
Article in Chinese | WPRIM | ID: wpr-790213

ABSTRACT

Objective To investigate the potential risk factors for influencing renal recovery at discharge in critically ill patients with acute kidney injury (AKI) requiringcontinuous renal replacement therapy (CRRT). Methods This was a single-center, retrospective study. Critically ill patients with AKI requiring CRRT adimitted to the Department of Intensive Care Unit (ICU) in Taizhou Municipal Hospital, Zhejiang province, from June 2014 to December 2017 were included and divided into two groups according to the status of renal recovery at discharge as renal recovery group and renal non-recovery group. The data of acute physiology and chronic health evaluationⅡ(APACHEⅡ) score and sequential organ failure assessment (SOFA) score at adimission to ICU, initial serum creatinine (initial SCr) and lactate level and initial estimated glomerular filtration rate (initial eGFR) at time of AKI diagnosis, and total time of RRT and duration of anuria before CRRT were analyzed. Length of ICU stay and length of hospital stay in both groups were also analyzed. Multivariate logistic regression was taken to analyze the potential risk factors for influencing renal recovery at discharge in critically ill patients with AKI. Results A total of 115 critically ill patients with AKI requiring CRRT were included, of which whom 45 cases were in renal recovery group and 70 cases were in renal non-recovery group, and the renal recovery rate at discharge was 39.1% (45/115); 59 patients were dead during hospitalization and the hospital mortality was 51.3% (59/115). Compared with renal non-recovery group, renal recovery group have a lower value of APACHEⅡscore [(21.73 ± 2.66) scores vs. (23.19 ± 4.41) scores, Pi0.03), SOFA score [(11.02 ± 2.22) scores vs. (12.79 ± 2.82) scores, Pi0.001], lactate level [(3.82 ± 1.34) mmol/L vs. (4.47 ± 1.52) mmol/L, Pi0.021], initial SCr [(2.151 ± 0.677) mg/dl vs. (2.505 ± 0.792) mg/dl, Pi 0.015], duration of anuria before CRRT[(11.80 ± 4.71) h vs. (19.11 ± 5.98) h, Pi0.005] and total time of RRT [(8.64 ± 3.42) d vs. (15.81 ± 5.07) d, Pi0.001], and have a higher value of initial eGFR [(36.26 ± 14.74) ml/(min·1.73 m2) vs. (30.07 ± 10.38) ml/(min·1.73 m2), Pi0.009]. In addition, length of ICU stay [(12.58 ± 4.78) d vs. (15.30 ± 5.45) d, Pi0.007] and length of hospital stay [(19.58 ± 6.44) d vs. (22.11 ± 5.90) d, Pi0.032] in renal recovery group were also significantly lower than those in renal non-recovery group. Multivariate logistic regression analysis indicated that SOFA score ( OR i0.700, 95% CI 0.521-0.941, P i0.018), duration of anuria before CRRT ( OR i0.782, 95% CI 0.689-0.888, P<0.01) and total time of RRT ( OR i0.673, 95% CI 0.565-0.801; P<0.01) were independent risk factors influencing renal recovery at discharge in critically ill patients with AKI, and initial eGFR was a independent protective factor. Conclusions As to critically ill patients with AKI requiring CRRT, there are many factors that affect renal recovery at discharge,. SOFA score, duration of anuria before CRRT and total time of RRT are independent risk factors, and initial eGFR is an independent protective factor.

7.
Article in Chinese | WPRIM | ID: wpr-709115

ABSTRACT

Objective To study the change of serum lipoprotein-associated phosphorlipase A2 (Lp-PLA2) and neuron specific enolase (NSE) and its clinical significance in patients with acute cerebral infarction (ACI).Methods Fifty-two ACI patients served as ACI group and 45 subjects undergoing physical examination served as control group.The patients in ACI group were further divided into mild ACI group (n =10),moderate ACI group (n =26) and severe ACI group (n =16) according to their NIHSS score.Relationship of serum Lp-PLA2 and NSE levels with NIHSS score in ACI patients was analyzed.Results The serum Lp-PLA2 and NSE levels were significantly higher in ACI group than in control group (289.3±19.4 μg/L vs 123.4±28.4 μg/L,22.1±2.8 μg/L vs 7.2±1.9 tμg/L,P<0.05),and in moderate and severe ACI group than in mild ACI group (P<0.05).The serum Lp-PLA2 and NSE levels and NIHSS score were significantly higher on days 2-7 than on day 1 after treatment (P<0.05) and significantly lower on days 6 and 7 than on day 5 after treatment (P<0.05).Pearson correlation analysis showed that serum Lp-PLA2 and NSE level were positively related with NIHSS score in ACI group (r =0.788,P =0.035;r=0.950,P=0.001).Conclusion Lp-PLA2 and NSE play an important role in the occurrence and progression of ACI,and are closely related with the severity and outcome of ACI,which can thus provide reference for the treatment,outcome and assessment of ACI.

8.
Article in Chinese | WPRIM | ID: wpr-610360

ABSTRACT

A case of a 47-year-old female patient who had a severe headache for 2 days was reported. Spontaneous subarachnoid hemorrhage (SAH, hunt-Hess classification Ⅱ level)-anterior communicating aneurysm rupture was diagnosed by brain CT and digital subtraction angiography (DSA) examination.Intravascular interventional aneurysm embolization was performed, and the patient appeared progressive limb weakness 5 days after operation. Physical examination revealed grade Ⅱ upper limb muscle strength and grade Ⅰ lower limb muscle strength. The muscle tone of the extremities was decreased,and the tendon reflex disappeared. The pinprick pain was decreased below the double wrist joints and the ankle joints. After neuroelectrophysiology test and cerebrospinal fluid assay, the patient was diagnosed as Guillain-Barré syndrome associated with subarachnoid hemorrhagic aneurysm embolization.

9.
Parenteral & Enteral Nutrition ; (6): 216-220, 2017.
Article in Chinese | WPRIM | ID: wpr-615604

ABSTRACT

Objective:To observe the nutritional status and respiratory function of the patients with mechanical ventilation in Intensive Care Unit after high fat and low carbohydrate enteral nutrition treatment.Methods:271 patients with mechanical ventilation in Intensive Care Unit were randomly divided into two groups:study group and control group.The study group was given high fat and low carbohydrate enteral nutrition treatment,while the control group with Enteral Nutritional Suspension.Thealbumin,prealbumin,blood gas analysis(PaC02,Pa0) and RQ,VC02,V02,IgG,CD4,CD4/CD8 were observed.Results:After nutritional support,nutritional status of two groups were improved,but there was no significant difference regarding the serum albumin and prealbumin.The PaO2,VO2,VCO2,RQ,IgG,CD4,CD4/CD8 and the total time of mechanical ventilation were improved,and the study group was superior to the control group.Conclusion:High fat and low carbohydrate enteral nutrition improves the nutritional status and respiratory function of the patients with mechanical ventilation in Intensive Care Unit,and decreases the total time of mechanical ventilation and total medical expenses.

10.
Article in Chinese | WPRIM | ID: wpr-512546

ABSTRACT

Objective·To investigate the effects of insulin-like growth factor 1 on prion encoding gene (PRNP) expression and amyloid precursor protein (APP) metabolism of PC12 cells. Methods·After PC12 cells were treated with 20, 40, 80 ng/mL IGF-1 for 24 h, real-time PCR was used to detect the mRNA expression levels of PRNP, and Western blotting was used to detect the protein levels of AKT, phosphorylation of AKT (pAKT), ERK and phosphorylation of AKT (pERK). The level of β-amyloid 42 (Aβ42) in supernatant fluid was detected by ELISA. Results·Compared with the blank control group, the expression of PRNP mRNA in Alzheimer's disease (AD) model group was increased significantly (P0.05). Compared with the blank control group, the level of Aβ42 in supernatant fluid of model group was decreased significantly with the increasing of IGF-1 concentration. The expression level of Aβ42 was decreased significantly in 40 and 80 ng/ml IGF-1 treatment group (P<0.05). The expression of AKT/pAKT, ERK/pERK in AD model group was significantly increased along with the increasing of IGF-1 concentration (P<0.05). Conclusion·IGF-1 could regulate the expression of PRNP gene and effect the metabolism of APP, which may be associated with PI3K/AKT, MAPK/ERK1/2 signaling pathway.

11.
Article in Chinese | WPRIM | ID: wpr-509418

ABSTRACT

Objective:To evaluate the safety and effectiveness of neglecting superficial femoral artery (SFA) recanalization for chronic lower extremity arteriosclerosis obliterans (ASO).Methods:Thirty-six cases treated for severe stenosis or occlusion of superficial femoral artery resulted from ASO were randomly divided into 2 groups.Twenty of them were treated by endovascular reconstruction of superficial femoral artery and the other 16 cases were not treated with their superficial femoral artery,but were only treated with the accompanied iliac and/or profunda femoral artery lesion.Results:There was no significant difference between the two groups on mean age,gender,ABI before treatment,accompanied diseases,Rutherford classification and trans-atlantic inter-society consensus (TASC) classification (P > 0.05).One week after operation,the reconstruction group had better marked effect and total effective rate [75.0% vs.12.5% (P <0.001);90.0% vs.37.5% (P =0.001)] and lower no effective rate [10.0% vs.62.5% (P =0.001)],There was no significant difference between the two groups on effective rate [15.0% vs.25.0% (P =0.675)].The deteriorate cases in both groups were zero,and there was no morbidity of complications and death in both groups during the perioperative period.In the 3-month follow up,the reconstruction group had a better marked effect rate [65.0% vs.25.0% (P =0.017)];There was no significant difference between the two groups on the effective rate,no effective rate and total effective rate [20.0% vs.43.8% (P=O.124);15.0% vs.31.3% (P =0.422);85.0% vs.68.8% (P =0.422)].The deteriorate cases and morbidity of complications and death in both groups during the perioperative period were still zero.In the 6-and 12-month follow ups,there were no significant differences between the two groups on marked effect and total effective rate [60.0% vs.37.5% (P =0.180),80.0% vs.87.5%(P=0.672);60.0% vs.43.8%(P=0.332),85.0% vs.87.5%(P=1.000)].The deteriorate case was zero in both groups,and there was no morbidity of complications and death in both groups.The limb salvage rate in both groups was 100% during the whole follow up period.The reconstruction group had a higher cost [(53 367.4 ± 24 518.3) yuan vs.(30 397.5 ± 15 354.4) yuan(P =0.011)].There were 8 cases of SFA restenosis/ reocclusion during the follow up,three of which accepted another endovascular treatment,and the reoperation rate was 15.0%.while in the nonreconstruction group,there was no case that needed another endovascular therapy,and the reoperation rate was zero.Conclusion:Only dealing with accompanied iliac and profunda artery lesion and neglecting superficial femoral artery reconstruction is a safe,effective and inexpensive therapy for chronic lower extremity arteriosclerosis obliterans,and should be the preferred alternative for some patients.

12.
Article in Chinese | WPRIM | ID: wpr-509416

ABSTRACT

Objective:To investigate the significance of filtration fraction (FF) and renal artery stenting in the treatment of atherosclerotic renal artery stenosis.Methods:In the study,42 cases of renal artery stenosis were treated with 52 renal artery stent implantation.Percutaneous transluminal renal angioplasty and stent (PTRAS) of the patients' health side kidney,ipsilateral kidney (renal) glomerular filtration rate (GFR),renal effective renal plasma flow effective renal plasma flow (ERPF),kidney filtration fraction changes of preoperative and postoperative serum creatinine (SCR) and the changes in the patients with blood pressure (SBP) and the changes after taking antihypertensive drugs were observed and analyzed.Results:The 52 cases of renal artery stent implantation were all successful.Preoperative ipsilateral GFR was significantly lower than that of normal side (t =-3.989,P =0.000);preoperative ipsilateral ERPF was significantly lower than the contralateral side (t =-4.926,P =0.000).On both sides,the overall FF values were equal (t =1.273,P =O.207).Postoperative ipsilateral renal GFR was increased,but there was no statistical difference (t =-1.411,P =0.164).Postoperative ipsilateral renal ERPF was increased significantly (t =-4.954,P =0.000),and FF lower (closer to the normal value (t =3.274,P =0.002).Postoperative side GFR was significantly reduced (t =2.569,P =0.000),the contralateral ERPF was significantly reduced (t =3.889,P =0.001),and FF had no significant change (t =-0.758,P =0.454).Postoperative side GFR was lower than that of the contralateral (t =-3.283,P =0.002) and postoperative side ERPF was still lower than that of the contralateral (t =-3.351,P =0.001),but on both sides,the FF values were equal (t =-0.361,P =0.719).Preoperative FF was relatively normal in the patients with kidney,and the postoperative FF value change was small (t =O.799,P =O.430);preoperative FF was significantly higher in the patients with kidney,and the postoperative FF value was lower than the preoperative (normal value,t =5.299,P =0.000).Postoperative overall serum creatinine was significantly decreased (t =2.505,P =0.016);but for the patients with unilateral renal artery stenosis,the changes in serum creatinine had no statistical difference (t =1.228,P =0.299);and for the patients with bilateral renal artery stenosis and serum creatinine compared with the preoperative,the changes were decreased significantly (t =2.518,P =0.030);postoperative blood pressure (SBP) was significantly decreased compared with that before operation (t =8.945,P =0.000);antihypertensive drugs taken were decreased significantly compared with the preoperative (t =5.280,P =0.000).Conclusion:For the patients with renal artery stenosis,FF is a useful index to understand the pathophysiological process of renal ischemia.Whether preoperative FF is significantly increased or FF is relatively normal,should be regarded as the indications of renal artery stent implantation.

13.
The Journal of Practical Medicine ; (24): 3350-3353, 2016.
Article in Chinese | WPRIM | ID: wpr-503216

ABSTRACT

Objective To study the function of the toll-like receptor-4 (TLR-4) signaling pathway in the synthesis and secretion of pulmonary artery smooth muscle cells of rats with COPD. Methods The primary pulmonary artery smooth muscle cells (PASMCs) of rats with COPD were digested, separated and purified. Then they were randomly divided into control group, LPS group, TLR4 inhibitor group (TAK242) and LPS + TLR4 inhibitor group. RT-PCR, Western blot were used to detect the expression level of TLR-4 and NF-κB among groups. The levels of IFN-γ and PDGF-AB in supernatant with PASMCs in each group were detected by ELISA. Results LPS increased the expression of TLR-4、 NF-κB and the levels of IFN-γ and PDGF-AB. The expression of TLR4, NF-κB and the levels of IFN-γ and PDGF-AB were significantly reduced after inhibiting the expression of TLR4(P < 0.05). Conclusion TLR-4 signaling pathway involved in the inflammatory response and pulmonary vascular remodeling which increased the synthesis and secretion of IFN-γ and PDGF-AB in PASMCs. It provides a theoretical approach for the early intervention of clinical with COPD.

14.
Article in Chinese | WPRIM | ID: wpr-485357

ABSTRACT

Objective:To study the clinical effects of percutaneous transluminal angioplasty (PTA ) versus stent implantation (ST)after PTA for the treatment of femoral and popliteal artery lesion resulted from arteriosclerosis obliterans.Methods:One hundred and three patients (1 1 9 limbs)treated for femo-ral and popliteal artery lesion resulted from arteriosclerosis obliterans for ten years were reviewed,of whom 60 limbs were treated by PTA and the other 47 by PTA combined with stent implantation.Results:Among the 60 limbs of the PTA group,there were 22 limbs involved only in femoral and popliteal artery;1 3 limbs combined with iliac artery lesion;1 7 limbs combined with infrapopliteal artery lesion;8 limbs combined with iliac and infrapopliteal artery lesion.Among the 47 limbs of the ST group,there were 1 8 limbs involved only in femoral and popliteal artery;8 limbs combined with iliac artery lesion;1 5 limbs combined with infrapopliteal artery lesion;6 limbs combined with iliac and infrapopliteal artery lesion. There was no significant difference between the two groups on age,sex,concomitant disease,ankle bra-chial index(ABI)before treatment and Rutherford classification (P>0.05).The patients’Trans-atlantic inter-society consensus (TASC)C/D was lower in the PTA group than that in the ST group (58.3%vs. 76.6%,P=0.047).The follow-up periods were 48.0 (5.0,1 08.0)and 40.0 (3.0,96.0)months respectively (P=0.064).Compared with the PTA group,the ST group had a better short-term total effective rate (93.6% vs.80.0%,P=0.044)and a higher cost [(33 882.7 ±8 695.6)yuan vs. (1 7 754.8 ±3 654.2)yuan,P<0.001 ].The short-term marked effective rate of the ST group was higher than that of the PTA group,but the difference was not significant (31 .9% vs.21 .7%,P =0.231 ).There was no significant difference between the two groups on short-term efficiency,and compli-cation rates (58.3%vs.58.3%,P=0.724;1 .7%vs.2.1%,P=1 .000).There was no death during perioperative period and no short-term deterioration in both the groups.The long-term marked effective rate was lower and the deterioration rate was higher in the ST group than that in the PTA group,but the difference was not significant (8.5% vs.1 5.0%,P=0.381;1 4.9% vs.5.0%,P=0.081 ).There was no significant difference between the two group on long term total effective rate,accumulative limb salvage rate and reoperation rate (66.0% vs.66.7%,P=0.939;94.7% vs.94.1%,P=0.884;31 .9% vs.31 .7%,P=1 .000),and the 1 to 1 0 years primary and secondary patency rates were similar (P=0.837,P=0.622).When compared based on TASC classification,TASC A/B patients in the ST group had a higher short-term marked effective rate,a higher short-term total effective rate and a higher long-term deterioration rate than those in the PTA group,but the difference was not significant (36.4%vs.24.0%,P=0.353;1 00.0%vs.88.0%,P=0.322;1 8.2%vs.4.0%,P=0.21 6).TASC C/D patients had a similar result (30.6%vs.20.0%,P=0.307;91 .7%vs.74.3%,P=0.050;1 3.9%vs.5.7%,P=0.226).Both TASC A/B and TASC C/D patients in the ST group had a similar accumu-lative limb salvage rate with that in the PTA group (90.9% vs.90.6%,P =0.920;97.1% vs. 94.1%,P=0.796).Conclusion:Stent implantation can increase the cost and short term effective rate at the same time and is not superior to PTA on the long term effective rate and limb salvage rate for femo-ral and popliteal artery lesion resulted from arteriosclerosis obliterans.

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Article in Chinese | WPRIM | ID: wpr-485325

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Objective:To evaluate the effectiveness and safety of endovascular treatment in solving symptomatic cerebral artery tandem lesions.Methods:From June 201 2 to February 201 4,1 2 cases (24 lesions)with symptomatic cerebral artery tandem lesions were accepted for the endovascular treatment. The distributions of the tandem lesions were as follows:the common carotid artery and internal carotid ar-tery (1 case),the internal carotid artery and the proximal of the carotid cavernous sinus segment (3 ca-ses),the internal carotid artery and the distal of the carotid cavernous sinus segment (4 cases),the in-tracranial segment of internal carotid artery and middle cerebral artery M1 segment (2 cases),the first segment of vertebral artery and intracranial segment of vertebral artery (2 cases).All of these cases were treated from distal lesions to proximal lesions except for tandem lesions in the internal carotid artery and the distal of the carotid cavernous sinus segment in order to obtain better support.Tandem lesions were treated in the same operation with local anesthesia or general anesthesia.The procedures of the 1 2 cases retrospectively were analyzed and the peri-operation complications and responsibility region recurrent is-chemic stroke incidents observed.Results:All tandem lesions were solved successfully all at once.There were no peri-operation complications or recurrent ischemic stroke incidents.There were no recurrent is-chemic stroke incidents or stent restenosis cases in the follow-up.Conclusion:It is safe and effective for selective endovascular treatment in solving symptomatic cerebral artery tandem lesions at the same time, but we should take careful preoperative evaluation and improve the operation plan.

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Article in Chinese | WPRIM | ID: wpr-465438

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Objective:To anslysis the hemodynamic states of vertebrobasilar dolichoectasia based on computational fluid dynamics technique.Methods:The original DICOM format image data from a patient with vertebrobasilar dolichoectasia (VBD), were imported by the Mimics software directly,and the 3D Objects were constructed.The simulation of model was made with Ansys software, the hemodynamic pa-rameters such as streamlines, wall shear stress( WSS) and wall pressure were described.Results:There was stable laminar flow in proximal basilar artery and was no blood flow mixed by bilateral vertebral arter-y.However, Spiral flows were appeared in distal tortuous basilar artery.The low WSS regions in the ver-tebra-basilar junction section and inferior segment of basilar artery were coincide with the high wall pres-sure regions.It could be speculated the initial growth regions might be located in the vertebra-basilar junction section and inferior segment of basilar artery.Local regions with low WSS and high wall pressure might be associated with the occurrence and development of VBD.Conclusion: CFD numerical simula-tion maybe can provide a theoretical basis for the role of hemodynamic factors in occurrence and develop-ment of VBD.

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Article in Chinese | WPRIM | ID: wpr-478005

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Objective:To analyze correlation factors of hemodynamic damage after carotid artery stenting.Methods:In this study, 66 cases (71 lesions) who undertook carotid artery stenting were col-lected and the correlation factors of hemodynamic damage were analyzed .Results:Hemodynamic damage emerged in 23 cases (32.4%), of which, 11.3%developed hypotension.The distance between bifurca-tion and lesions (P=0.002 0), plaque distribution (P=0.000 2), plaque character (P=0.001 9), post-dilation ( P =0.002 6 ) were associated with hemodynamic damage by single factor analysis . However, only eccentric plaque (P=0.015 3) and calcified plaque (P=0.009 7) were associated with hemodynamic damage by multiple factors analysis .All the patients could reach stable circulation by drugs during operation , and no cerebral ischemic events ( transient ischemic attack or stroke ) and cardiovascu-lar ischemic events happened .Conclusion: The distance between bifurcation and lesions , eccentric plaques, calcified plaques are correlation factors of hemodynamic damage .

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Article in Chinese | WPRIM | ID: wpr-461006

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Objective:To study the morphology of middle cerebral artery ( MCA ) M1 segment .Me-thods:We selected the MRA data of 794 MCA (400 of the left side and 394 of the right side ) from Ja-nuary 1, 2011 to June 30, 2011 consecutively and analyzed the morphology of the MCA M 1 segment in axial, anteroposterior and lateral view , measured the length of the M1 segment, and analyzed the simila-rity of the left and right side M1 segment morphology .Results:In axial, anteroposterior and lateral view , the MCA M1 segment showed C-shape >L-shape >S-shape .In axial view , it was about 373 ( 47%) M1 segment performance for the C-shape, of which 340 (42.8%) M1 segments showed bowing to the dorsal side, only 33 (4.2%) M1 segments showed bowing to the ventral side .In anteroposterior view, it was about 322 (40.6%) M1 segments of the performance of the C-shape, of which 262(33.0%) M1 segments showed a bowing to the superior , 60 (7.6%) showed bowing to the inferior .The similarity of the left and right MCA M1 segments was 27.2% (114/419) in axial view and 42.7% (179/419) in anteroposterior view.It was more similar in anteroposterior view than in axial view .Along with the increase of age, in the axial view, L-shape converted to C-shape very obviously, but only mildly elevated in S-shape .In anteroposterior view , the L-shape converted to the C-shape or S-shape along with the increase of age.Conclusion:The different morphology of MCA M1 segment in axial and anteroposterior view may be involved in the development of intracranial atherosclerosis .

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Chongqing Medicine ; (36): 732-735, 2015.
Article in Chinese | WPRIM | ID: wpr-460926

ABSTRACT

Objective To investigate the effect of artesunate on the expression of heat shock protein 47(Hsp47)in pulmonary fi-brosis in rats.Methods Thirty SD male rats were randomly divided into control group,model group and artesunate intervention group (intervention group).Rats in control group were intrachacheally instilled with saline (0.4 mL),while rats in other two groups 5 mg/kg bleomycin.Rats in both control group and model group were intraperitoneal injected with 1 mL saline per day sub-sequently.And the rats in intervented group were intraperitoneal injected with 10 mg/100 g artesunate per day.The body weight of day 0,day 14 and day 28 were recorded.All the rats were sacrificed on day 28.The pulmonary coefficient and the hydroxyproline content were observed.The expression of Hsp47mRNA and CollagenⅠmRNA were evaluated by RT-PCR.The Hsp47 expression was also detected by Western Blot.The pathological changes were analyzed by hamatoxylin-eosin (HE)stain and Masson stain.Re-sults (1)The body weight of control group grew much faster than other groups (P intervention group (8.54±0.67)mg/g>control group(4.81±0.38)mg/g (P control group (3.08±0.56),model group(5.70± 1.09)>intervention group (4.01 ± 1.25).There was no significant difference between control group and intervention group(P >0.05).(4)Hydroxyproline content:model group (620.33±66.16)μg/g>control group(379.00±35.51)μg/g,model group (620.33±66.16)μg/g >intervention group(429.00± 36.51)μg/g (P control group (P 0.05).CollagenⅠmRNA:model group > intervention group>control group (P <0.05).(6)Western blot showed that Hsp47 ex-pression of model group was the highest in all three groups.Conclusion These results indicate that artesunate might inhibit pulmo-nary fibrosis and depress CollagenⅠproduction,and it′s probably a result of Hsp47 down regulation.

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Article in Chinese | WPRIM | ID: wpr-239438

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the influence of different pressures of CO2 pneumoperitioneum on pathomorphism and function of intestines following laparoscopic gastrectomy (LG).</p><p><b>METHODS</b>Forty-eight gastric cancer patients were prospectively enrolled in the study. Among them, 36 patients scheduled for elective LG were randomly assigned to low pressure group (LP), middle pressure (MP), and high pressure group (HP) with 12 cases in each group. The CO2 pneumoperitoneum pressure was maintained at 8-10 mmhg in LP, 11-13 mmhg in MP, and 14-16 mmhg in HP. The control group was open gastrectomy group (OG) in 12 cases. The intestinal pathomorphism and level of plasma D-lactic acid before, during and after operation, and postoperative intestinal function of four groups were examined and compared.</p><p><b>RESULTS</b>There were no statistical differences in preoperative data among the four groups(all P>0.05). LG group was associated with a lower rate of surgical complications than OG (8.3% vs. 41.7%, P<0.05). No obvious damage of intestinal mucosa was found in OG group. Damage degree of intestinal mucosa after operation in LP, MP and HP groups was 0-1, 1-2, and 2-3 respectively. There was significant change in intestinal pathomorphism after operation in both HP and MP groups. The levels of D-lactic acid before operation were not significantly different among all the four groups, but increased significantly in each group after operation (all P<0.05). HP group had the highest level of plasma D-lactic acid and presented with delayed bowel sound return (4.5 d), time to first flatus (5.4 d), and intake (6.0 d) as compared to the other 3 groups (all P<0.05).</p><p><b>CONCLUSIONS</b>Laparoscopic radical gastrectomy is safe and minimally invasive. Higher pneumoperitoneal pressure is harmful to the recovery of intestinal mucosa and function. Therefore the pneumoperitioneum pressure should be maintained as low as possible under clear visualization during operation.</p>


Subject(s)
Gastrectomy , Humans , Intestines , Physiology , Laparoscopy , Pressure , Stomach Neoplasms , General Surgery
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