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Objective:To detect the changes in mental arithmetic competence and the related influencing factors in patients with early Parkinson's disease(PD)by using mental arithmetic task behavioral experiment.Methods:Thirty-one patients with early PD and 40 healthy controls were enrolled in this study.The cognitive functions were tested by mini-mental state examination(MMSE)and Montreal cognitive assessment(MoCA). The differences of mental arithmetic competence between the two groups were measured by behavioral experiment.Results:There was no significant difference in correct rate, reaction time and post-corrected reaction time while performing baseline tasks and easy mental arithmetic tasks between the two groups( P>0.05). The reaction time had no significant difference between the two groups after adjusting some confounding factors( P>0.05). However, the correct rate while performing difficult mental arithmetic tasks was significantly lower( t=-2.232, P=0.029)and the reaction time was significantly longer( t=2.149, P=0.035)in PD group than in the controls, and the significant difference in reaction time persisted even after adjusting some confounding factors( t=3.139, P=0.003). In PD group, the correct rate of difficult mental arithmetic tasks was positively associated with MoCA scores( r=0.561, P=0.004), and negatively associated with age( r=-0.532, P=0.008). The reaction time and post-corrected reaction time while performing difficult metal arithmetic task were negatively associated with MoCA scores( r=-0.525, P=0.01; r=-0.554, P=0.005)and positively associated with age( r=0.485, P=0.037; r=0.514, P=0.012)in PD group. Conclusions:The difficult mental arithmetic competence is impaired in early PD patients, which is statistically significantly correlated with cognitive function and age.
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Objective To investigate the relationship between two single nucleotide polymorphisms (rs356219,rs356165 sites) and cognitive dysfunction in Parkinson disease.Methods 236 patients with Parkinson's disease were randomly selected from November 2014 to November 2017.According to the results of MoCA cognitive function evaluation,the patients were divided into group A (cognitive dysfunction group)and group B (normal cognition group).At the same time,65 patients were randomly selected as group C (Health control group).The allele frequency and genotype distribution of rs356219 and rs356165 were compared,and the differences among the three group were compared.Results In the rs356165 allele frequency,group A (G:57.14％,A:42.86％),group B (G:56.45％,A:43.55％) and group C (G:52.31％,A:47.69％) had no statistical significance (P＞ 0.05).In the rs356165 genotype,G/G (21.43％) and A/A (14.29％) in group A were higher than group C (G/G:4.62％,A/A:1.54％),G/G (22.58％) in group B and A/A (14.52％) were higher than group C G/G (4.62％) and A/A (1.54％) (P＜ 0.05).In the rs356219 allele frequency,group A (G:64.29％,A:64.29％) and group B (G:64.52％,A:35.486％) and group C (G:46.15％,A:53.85％) was statistically significant (P＜0.05),but no statistical significance between group A and group B (P＞0.05);In the rs356219 genotype,group A (G/G:35.71％,A/A:21.43％,A/G:42.86％),group B (G/G:35.48％,A/A:22.58％,A/G:41.94％) and group C (G/G:30.77％,A/A:26.15％,A/G:43.08％) had no statistical significance (P＞ 0.05),and there was no statistical significance between group A and group B (P＞0.05).Conclusions The polymorphism of rs356219 and rs356165 sites in rho-synaptic nucleoprotein plays an important role in the pathogenesis of Parkinson disease.However,there was no correlation with cognitive dysfunction in patients with Parkinson disease.
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Objective To analyze the relationship between the estimated glomerular filtration rate (eGFR) and 10-year car‐diovascular disease risk (10y CVDR) in Chongqing college staff .Methods The physical examination data of the staff in two univer‐sities including 2630 persons were collected in April 2013 .The eGFR and 10y CVDR of each staff were calculated according to the standardized formula .The differences of 10y CVDR among different eGFR level groups were analyzed .Results The average age of all the staff were (51 .76 ± 14 .53) years old ,which in males was significant higher than that in females (P<0 .01) .The smokers , hypertension patients and diabetes patients accounted for 16 .00% ,15 .20% and 4 .10% respectively .The smokers ,hypertension and diabetes patients in males were significantly more than than those in females (P<0 .05) .The height ,weight ,BMI ,systolic pressure , diastolic pressure ,serum creatinine ,triglyceride ,LDL and blood glucose in males were significantly higher than those in females (P=0 .000) ,while HDL in males was significantly lower than that in females (P=0 .000) .The median of 10y CVDR was 1 .25% , males were significantly higher than females (2 .85% vs .0 .40% ,P<0 .01) .The median of 10y CVDR for the following groups were 0 .74% ,2 .25% ,5 .58% and 14 .39% respectively :eGFR≥90 mL · min-1 · 1 .73 m2 ,75 mL · min-1 · 1 .73 m2 ≤eGFR<90 mL · min-1 · 1 .73 m2 ,60 mL · min-1 · 1 .73 m2 ≤eGFR<75 mL · min-1 · 1 .73 m2 ,and eGFR<60 mL · min-1 · 1 .73 m2 .The results of the one‐way analysis of variance showed that compared to the 10y CVDR of the group with eGFR≥90 mL · min-1 · 1 .73 m2 ,which of the other three groups were all significantly increased .Conclusion eGFR is a significant factor impacting 10y CVDR . The lower the eGFR level ,the higher the risk of the 10y CVDR .
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Objective To investigate influence of ulinastation in storage period on apoptosis of suspended erythrocyte.Methods RBCs were treated with saline (control group) and different doses of ulinastatin (5,000, 10,000 and 50,000 U/mL in group C1, C2 and C3, respectively).samples were detected when stored at 0,7,14,21,28,35 d,respectively.Indicators of corpuscular volume,phosphatidylserine extroversion rate and intracellular Ca2 +concentration were analyzed by flow cytometer.Results The phosphatidylserine (PS)-exposure levels of 4 groups started to increase on 14 day(P<0.05). Cells of the control group, group C1 and C2 began to shrink remarkably on day 21, while that of Group C3 on 28 day.The intracellular Ca2 +levels of the control group and group C1 started to increase significantly on day 35, (t=16.33,t=14.66,P<0.05).one Ca2 +levels of group C1,C2 and C3 increased on day 14.From 21 to 35 day, the intracellular Ca2 +levels of group C2 and C3 were no significant compared with control group.Conclusion During the storage period, suspended erythrocyteapoptosis increase with time prolonged, adding suitable amount of ulinastatin in stock solution can inhibit apoptosis in damage at some level.
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Objective To analyze the routine testing of vaginal discharge samples and investigate the clinical characteristics of the vaginal micro ecology of a hospital women .Methods The data of 2 533 clinical cases were included .The vaginal infection in different ages and seasons was analyzed .The clinical usefulness of bacterial vaginosis (BV) rapid diagnostic method was estimated . Results The rate of low cleanliness samples (stage Ⅲ + Ⅳ) was significantly higher than that of StageⅠ + Ⅱsamples .Of the 2 533 cases ,the detection rates of fungus and small gram negative or gram variable rods were significantly higher among specific patho‐gens and pathogenic bacteria ,respectively .The rates of low cleanliness samples were highest at age below 20 and in the season of winter (81 .3% ,73 .0% ) ,those of fungus at age from 21 to 30 and in the season of summer (23 .9% ,23 .0% ) ,and those of small gram negative or gram variable rods at age from 31 to 40 and in the season of winter (25 .1% ,37 .3% ) .In comparison with golden method ,the sensitivity and specificity of BV BLUETM method were 80 .0% and 90 .0% ,which reflected the accuracy was 87 .5% . Conclusion Vaginal infection of a hospital women was more common in young group and in the season of winter .Fungus and small gram negative or gram variable rods were the major pathogens .BV BLUETM method could assist in the BV rapid diagnosis ,with potential false positive/negative results being fully validated .
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Objective To detect the impairment of response inhibition and working memory in patients with alcohol dependence.Methods A total of forty-eight alcohol dependent patients and fifty age,gender,IQ,education matched controls were recruited.Neuropsychological tests were applied to measure the differences of response inhibition and working memory between the two groups.Results In the response inhibition task,the patient group had more commission errors ((7.02± 3.48) vs (3.45± 1.52)) and longer reaction time ((605.45 ± 142.56)ms vs (435.72±51.18)ms) compared to the control group (t=6.534,P=0.000; t=7.781,P=0.000).In the spacial working memory task,the patient group also had more commission errors ((4.58± 3.45) vs (0.43± 0.88)) and longer reaction time((10566.16±2455.61) ms vs (9185.44±2677.52) ms) than control (t=8.085,P =0.000; t=2.657,P=0.009).Conclusion There are significant deficiencies in response inhibition and working memory in patients with alcohol dependence.
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Objective To explore the protective effect and probable mechanism of JNK inhibitor SP600125 on hippocampal neurons in rats with status epilepsy following lithium?pilocarpine. Methods 48 Wistar rats,in accordance with the random number table,were divided into control,status epilepticus ( SE) and JNK in?hibitor SP600125 group ( SP ) . HE staining and fluorescent TUNEL method were used to observe pathological changes and neuronal apoptosis in the hippocampal area of rats in each group. Western blot was applied to detect the phosphorylation expression of JNK and its downstream effector molecule c?JUN in hippocampal tissues of rats in each group. Results Compared with control group,neuronal loss and apoptosis in CA3 area of hippocampus in SE group were significant (percentage of TUNEL positive cells (26.34±3.04)%, P<0.05). The mortality of rats was significantly decreased and neuronal loss and apoptosis were obviously reduced in SP group than in SE group ( mor?tality in SP and SE group :6.25%,37.5% respectively, P<0.05). Meanwhile,the expression levels of phospho?JNK and phospho?c?JUN were significantly increased in hippocampus of rats in SE group ( The relative OD values respectively 0.447±0.025,0.552±0.035, P<0.05 compared with Control group). After treated with SP600125 in SP group,the phosphorylation levels of JNK and c?JUN were obviously decreased ( The relative OD values respec?tively 0.211±0.016,0.237±0.028, P<0.05 compared with SE group). Conclusion JNK inhibitor SP600125 may play an important protective effect on neurons in the rat hippocampus after status epilepticus through inhibition of JNK and c?JUN phosphorylation.
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Objective To investigate the clinical effect of botulinum toxin type A (BTX-A) injections guided by electromyography in combination with electrical stimulation in the treatment of upper limb spasticity poststroke.Methods Forty-five patients with upper limb spasticity following stroke were recruited.They received multiple intra-muscular BTX-A injections guided by electromyography and electrical stimulation.Rehabilitation training was administered after the BTX-A injections.The results were assessed using the modified Ashworth scale (MAS),the Fugl-Meyer upper limb assessment (FMA),active range of movement (AROM) and the modified Barthel index (MBI).All the assessments were performed at the baseline,and then 1 week,2 weeks,1 month,and 3 months after the injections.Results Compared with the baseline scores the MAS,FMA,AROM and MBI results had all obviously improved by 2 weeks after the BTX-A injections.Compared with 2 weeks after the injections,the FMA and AROM scores at 1 month were significantly higher and there were further significant improvements at 3 months.No patient demonstrated obvious side effects from the therapy.Conclusion BTX-A injection guided by electromyography and electrical stimulation is safe and has definite beneficial effects on upper limb spasticity after stroke.
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ObjectiveTo detect the fiber structure and volume differences in frontal lobe between patients with amnestic mild cognitive impairment (aMCI) and normal control.MethodsT1 -weighted magnetic resonance imaging and diffusion tensor imaging were obtained in 28 aMCI patients and 25 normal controls.Volumes,fiber fractional anisotropy (FA),fiber apparent diffusion coefficient (ADC),fiber number,and average fiber length of frontal lobe in the two groups were measured.ResultsVolumes of left frontal lobe ( ( 337.35 ± 20.45 ) cm3 ) in aMCI group were smaller than control ( (358.54 ± 27.26) cm3 ) ( t =- 3.223,P =0.002 ).Numbers of short range fiber in left frontal lobe ( 16985 ± 892) were significantly increased relative to control ( 16387 ±752) ; while numbers of long range fiber (3214 ± 185 ) were reduced compared with control (3425 ± 277 ),and ADC values increased ( t =2.621,P =0.012; t =-3.714,P =0.001 ; t =17.595,P=0.000).In aM CI group,numbers of long range fiber in right frontal lobe were reduced (2895 ± 343 vs.3451 -± 230,t =- 7.011,P =0.000),and ADC values were increased ( t =4.443,P =0.000).In aMCI group,numbers of long range fiber in left frontal lobe were positively correlated with scores of mini-mental state examination ( MMSE ) ( r =0.457,P =0.015 ),while ADC values of long range fiber in left frontal lobe were negatively correlated with scores of MMSE ( r=-0.415,P=0.028).ConclusionThe structure and fiber connectivity are affected in aMCI patients and the lesion of connectivity in left frontal lobe are related to the severity of symptom.
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ObjectiveTo investigate the brain function in the patients with transient ischemic attack (TIA) using index of regional homogeneity ( ReHo ).MethodsSixteen TIA patients ( TIA group ) and 16 age-matched normal controls(control group) underwent standard resting state functional MRI (fMRI)scan.The changes of the brain ReHo were studied by DPARSF analysis.ResultsCompared with that of control group,TIA group showed significantly decreased ReHo in the left cingulate gyrus (z =-3.72),left frontal gyrus (z =-3.02),right frontal gyrus (z =-3.23),right superior frontal gyrus (z =-3.75),right precuneus (z =-3.80),right inferior parietal lobule (z =-3.98 ),left inferior parietal lobule (z =-3.82),precentral gyrus ( z =- 3.85 ),right midfrontal gyrus ( z =-4.15 ),right midtemporal gyrus (z =- 3.43 ),and increased ReHo in the right hippocampus (z =3.37) and right cerebellum (z =3.55).Conclusion The rest-state brain function is abnormal in TIA interictal phase,and the increased ReHo in the hippocampus and cerebellum may reflect stress-induced brain protection of TIA and partial comoensatory response.
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Objective To investigate the characteristics of resting-state functional magnetic resonance imaging (fMRI)in patients post-stroke depression (PSD).Methods Resting-state fMRI scans were performed in 13 patients with and without post-stroke depression.A regional homogeneity (ReHo) approach was used as an indicator.The brain function was analyzed in patients with post-stroke depression.Results Compared to a control group,the ReHo values decreased significantly in a PSD group in the left middle frontal gyrus,right superior frontal gyrus,right middle frontal gyrus,right anterior cingulate gyrus,right posterior cingutate gyrus,left insular lobe,left caudate nucleus,and left hippocampus.Conclusions The patients with PSD had restingstate neural circuit dysfunction,suggesting that the need to focus on the emotional state of stroke patients in the clinical treatment process.
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Objective To investigate any changes in motor functional connectivity in the brains of acute ischemic stroke patients after low frequency electrical stimulation.Methods Twenty-five ischemic stroke patients were given low frequency electrical stimulation in addition to their conventional rehabilitation treatment.Another 20 patients received only conventional treatment as a control group.Resting-state functional magnetic resonance imaging (rs-fMRl)was employed to assess motor function connectivity in the brains of all 45 subjects before and after treatment.Any differences in functional impairment,extremity motor function or ability in the activities of daily living were also recorded before and after treatment.Results In both groups,average scores on the Canadian neurological scale (CNS)and the National Institutes of Health stroke scale (NIHSS) had been reduced significantly after treatment and FuglMeyer assessment (FMA) and modified Barthel index (MBI) scores had significantly increased.The average improvements in terms of FMA and MBI scores were significantly greater in the observation group.Compared with before treatment,the coefficient of functional connectivity of the bilateral motor cortex had decreased significantly after treatment in both groups.In the observation group the changes were significantly correlated with the improvements in FMA scores.Conclusion Neural functional impairment after ischemic stroke can be reduced significantly and extremity motor function and ability in the activities of daily living can be significantly improved by low frequency electrical stimulation.
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Objective To investigate the risk factors for reduced renal function in patients with ischemic stroke.Methods The medical records of patients with ischemic stroke were analyzed retrospectively.They were divided into normal renal function group and reduced renalfunction group.Reduced renal function was defined as estimated glomerular filtration rate (eGFR) ＜60 ml/(min·1.73 m2).Multivariate logistic regression analysis was used to identify the risk factors for reduced renal function in patients with ischemic stroke.Results A total of 805 patients with ischemic stroke were enrolled in the study.8.8％ of patients had a reduced renal function.There was no significant differences in the proportion of patients with mild and moderate neurological deficit between the reduced renal function group and the normal renal function group (all P ＞ 0.05),however,the proportion of patients with severe neurological deficit was significantly higher than that in the normal renal function group (8.4％vs.2.6％,x2 =5.573,P =0.017).The proportion of small artery occlusion in the reduced renal function group was sigaificantly higher than that in the normal renal function group (66.2％ vs.46.5％,x2 =9.962,P =0.002),and the proportion of large artery atherosclerosis was significantly lower than that in the normal renal function group (19.7％ vs.43.5％,x2 =15.045,P =0.000).Multivariate logistic regression analysis indicated that old age (odds ratio [ OR] 3.301,95％ confidence interval [ CI],1.575 to 6.918; P=0.002) was the most important independent risk factor for reduced renal function,then was female (OR,2.291,95％ CI 1.355to 3.872; P=0.002) and hyperlipidemia (OR,2.527,95％ CI 1.095 to 5.831; P=0.030).Conclusions Reduced renal function in patients with ischemic stroke is strongly associated with old age,female,and hyperlipidemia.
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Objective To investigate the appropriate setting up of normal reference ranges of lymphocyte subsets in some flow cytometry laboratories and to study the effects of different flow cytometers and various reagents by different manufacturers on the analysis of peripheral blood lymphocyte subsets. Methods Three FCM labs (named A, B and C) in Beijing region were selected representing 3 commonly used flow cytometers (Beckman Coulter Epics XL, Beckman Coulter Cytomics FC500, BD FACS Calibur). 50 samples from healthy donors were distributed to 3 labs and tested according to individual lab's standard operating procedure to verify whether the normal reference ranges of peripheral blood lymphocyte subsets established were appropriate. The application of internal quality control was also investigated. Commercial blood quality control reagents were given to the 3 FCM labs and tested within 20 working days paralleled with routine samples. In addition, 20 patients' samples were prepared using 4 different combinations of reagents ( a , b , c and d). The results from combination a, which used the Beckman Coulter reagents and instrument, were compared to the results from combination b, c and d, which used reagents from different manufacturers. Then the prepared samples were tested on Beckman Coulter Epics XL to evaluate the effects of different combinations of reagents on the results of peripheral blood lymphocyte subsets analyzed by the same instrument. Furthermore, 24 patients' samples prepared by same reagents from Beckman Coulter company were tested on both Beckman Coulter Epics XL and BD FACS Calibur respectively to assess the effects of different instruments on peripheral blood lymphocyte subsets. 20 patients' samples prepared by same reagents and instruments were analyzed by Beckman Coulter Epics XL analytic system and BD FACS Calibur analytic system respectively to assess the effects of the two analytic systems on the lymphocyte subsets. Results Over 10% of the results for NK and T4/T8 in lab A as well as T4 in labs B and C fell outside of their normal reference ranges. The probabilities exceeding corresponding normal reference ranges were 16% ( 9/50 ), 24% ( 12/50 ), 22% (11/50) and 12% ( 6/50 ), respectively. The results using internal blood quality control in 3 FCM labs within 20 working days were all within the reference ranges of the quality control provided by the kit. The biases from b and c reagent combinations were substantial compared with that of reagent a combination. Among the biases from b and c reagent combinations, the lowest probability of bias exceeding 10% was T8 of combination b, which had probability of 70% (14/20). The highest probabilities of hias exceeding 10% were T3 and T4 of b and c reagent combinations, which reached 100% (20/20) . Furthermore, the biases of T3, T8 and B of d reagent combination compared with that of reagent a combination were also substantial. The probabilities of bias exceeding 10% were 35% (7/20) ,85% (17/20) and 75% (15/20), respectively. Comparing the results of samples prepared and analyzed by reagents and instruments from different manufacturers to that of samples prepared and analyzed by the same company's reagents and instruments showed that there were great discrepancies in T3, T4 , T8 , B and NK. The probabilities of bias exceeding 10% were 71% ( 17/24), 80% (19/24) ,38% (9/24), 33% (8/24) and 92% (22/24), respectively. The biases of T8, NK and B were substantial when compared the results from Beckman Coulter Epics XL analytic systems and BD FACS Calibur analytic systems. The probabilities of bias exceeding 10% were 55% (11/20 ), 70% ( 14/20 ) and 55% (11/20), respectively. Conclusions FCM labs should set up their own normal reference range for peripheral blood lymphocyte subsets. The normal reference range should be verified periodically. It is important to apply internal blood quality control regularly and accumulate the quality control results. The reagents and instrument for preparing peripheral blood samples should be from the same manufacturers.
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Objective To investigate the influence of intraoperative thermostasis over respiratory burst of polymorphonuclear neutrophils (PMNs) in patients undergoing radical operation for lung cancer.Methods Thirty-two ASA Ⅱ or Ⅲ patients scheduled for radical operation for lung cancer under general anesthesia were randomized into two groups ( n = 16 each): control group (Group C) and warming group (Group W). The patients in Group C were kept warm by routine measures such as using woollen blankets, while the patients in Group W were kept warm by force-air warming system and fluid warming device as soon as the patients were admitted to the operation room. Rectal and axillary temperatures were continuously monitored as the core and surface temperature, respectively. The core temperature was maintained at the preoperative level (baseline). Anesthesia was induced with midazolam, fentanyl and propofol. Tracheal intubation was facilitated with rocuronium. Anesthesia was maintained with isoflurane and nitrous oxide and intermittent i.v. boluses of fentanyl, midazolam and vecuronium. Venous blood samples were obtained before, during and at the end of surgery for normal blood analysis and respiratory burst of PMNs which included activated PMNs count and reactive oxygen species (ROS) production.Results (1) WBC and PMN counts were significantly increased during and after operation as compared with the baseline values before operation in both groups and there was no significant difference in WBC and PMN counts between the two groups. (2)Phorbol-12-myristate-13-acetate (PMA) stimulation resulted in higher intraoperative and postoperative activated PMN counts in both groups and higher postoperative ROS production in Group W. Postoperative ROS production was significantly higher in Group W than in Group C. (3) The PMN counts without stimulation activation during operation and intra- and post-operative ROS production were significantly decreased as compared with the baseline values before operation in Group C, while in Group W there was no significant difference in pre-, intra- and post-operative activated PMN counts and ROS production. The intraoperative PMN counts and intra- and post-operative ROS productions were significantly higher in Group W than in Group C.Conclusion Intraoperative thermostasis can effectively maintain activated PMN count and ROS production without stimulation and enhance ROS production with stimulation in patients undergoing radical operation for lung cancer.
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Objective To observe the effects of Panax notoginseng saponins and aspirin on platelet aggregation and analyzed resistance probability.Methods One hundred and twenty patients with cerebral infarction were di-vided randomly into Panax notoginseng saponins group and the aspirin group (each group 30 cases),respectively treated with adenosine diphosphatc (ADP),arachidonic acid (AA) to induced and detect the largest platelet aggre-gation (MAR).All patients received platelet aggregation test in hospital on the first and 14th day.Results In Pa-nax notoginseng saponins group and the aspirin group platelet aggregation induced by gents in the same role did not show statistical significance.There were resistances,semi-resistance phenomenon.Conclusions Panax notogin-seng saponins on platelet aggregation and the impact of aspirin was not significant; it may be used as anti-platelet aggregation drug,but there is also the resistance phenomenon.By combining Panax notoginseng saponins other an-ti-platelet drug anti-platelet aggregation of the long-term clinical.It might solve the resistance problem through large-scale clinical trials.
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Objective To study the relationship between the expression of eostimulating factor B7-H4 in patients with primary biliary cirrhosis (PBC) and the pathogenesis of PBC. Methods The expression of B7-H4 mRNA on peripheral blood mononuclear cell (PBMC) of 65 patients with PBC was tested by real-time PCR. Serum levels of IL-2 were assayed by ELISA. CD4+, CD8+ T lymphocytes expression level and B7-H4 expression rate before and after activation were measured by three-color flow cytometry (FCM). Re-sults (1) Expression of B7-H4 mRNA and BT-H4 percentage in PBC group were significantly lower than that in none-PBC group and healthy controls(P<0.01);(2)After 72 h activation, the percentage of CD4+, CD8+, and CD4+ CD8+T lymphoeytes and serum levels of IL-2 decreased (P<0.05), and the percentage of CD4+, CD4+ CD8+T lymphocytes and serum levels of IL-2 were significantly higher than that of none-PBC group and healthy controls(P<0.01);(3)Levels of alanine aminotransferase(ALT), aspartate amin-otransferase(AST), alkaline phosphatase(ALP) and γ-glutamyl transpeptidase(GGT) of patients with posi-tive anti-mitochondrial antibody(AMA)-M2 rose. There was no significant difference of B7-H4 expressions on T cells between patients either with or without AMA-M2 antibody. Conclusion The costimulating factor B7-H4 can express on T lymphocytes which is activated by phytohemagglatinin(PHA) aad plays a negative role on T cells responses.
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Objective To investigate the association of TGF-β receptor typeⅡ(TβRⅡ)mRNA with lupus nephritis (LN) and disease activity by testing its expression levelin peripheral blood mononuclear cells (PBMCs).Methotis Forty-four patients with LN were included in this study.They were all had active LN.Twepty-eight LN patients were taking glueocorticoids and/or immunosuppressive agents and sixteen had never taken steroids or immunosuppressive agents.The expression levels of T13R H mRNA were semi-quantitativelydetermined by reverse transcription-polymerase chain reaction(RT-PCR).Resuits The expression levels of TβRⅡ mRNA in PBMCs from LN patients(1.7±1.0)were lower than those of non-lupus nephritis(4.0±3.1) and healthy subiects(4.1±2.5),(P<0.01).The difference of the expression levels between patients who took and had never taken glucocorticoids and/or immunosuppressive drugs was significantly statistically(P<0.05).The expression levels of TβRⅡ mRNA in PBMCs of patients with LN were correlated significantly with the systemic lupus erythematosus disease activity index (SLEDAI)scores(r-0.309.P<0.05),titers of anti-dsDNA antibody(r=-0.401,P<0.01)and serum complement C3 level(r=0.621,P<0.01).Conclusion This study suggests that TβRⅡ may be involved in the development of LN,and the TβRⅡ mRNA expression levels in PBMCs from patients with SLE are significantly correlated with LN activity.Glucocortieoids or immunosuppressive drugs can increase the expression levels of TβRⅡ mRNA and ameliorate renal damage.
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Objectives To investigate the ratios of peripheral blood CD4+CD8+ and CD4+CD25+ regulative T cells, and explore the association with hepatic damnification and anti-AMA-M2 antibodies.Methods The percentage of CD4+CD8+T cells and CD4+CD25+T cells in peripheral blood from patients with primary biliary cirrhosis(PBC) (n=27)、26 patients with other hepatic desease、30 normal individuals were measured by flowcytometry.Results Patients with PBC had statistically higher levels of CD4+CD25+T cells than the patients with other hepatic disease (P
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Objective To evaluate the electrophysiological change in patients with acute tetrodotoxin(TTX) poisoning.Methods The electromyogram, motor nerve conduction velocity(MCV), sensory nerve conduction velocity(SCV),F wave,H reflex and somatosensory evoked potentials(SEP) were randomly detected in 58 patients with acute TTX poisoning.Results 22 patients with TTX(37.9%) detected by the electromyogram showed mainly polyphase irregular waves;MCV and SCV were weakened; SCV was even more remarkable,the latency of distant MCV action potentials was prolonged obviously, the abnormality rate of nerve conduction velocity was much higher than that of fibrillation,the detectable rats of positive wave was high,the low abnormality rate of F wave and H reflex suggested that the ill TTX poisoning involved the nerve roots;the abnormality rate of SEP was 56.9%.Conclusion TTX poisoning can company with the damage of central nerves, the measure of electroneurophysiology can be used to observe the extent,course and range of nerve system damage in patients with acute TTX poisoning, and it is one of the early detection means of this disease.