Evaluation of the atherogenic tendency of lipids and lipoprotein content and their relationships with oxidant-antioxidant system in patients with psoriasis

BACKGROUND: Psoriasis is a common chronic and recurrent inflammatory skin disease that can occur due to abnormalities in essential fatty acid metabolism, lymphokine secretion, free radical generation, lipid peroxidation and eicosanoid metabolism, and has been associated with increased frequency of cardiovascular events. The current study was designed to evaluate plasma lipids, susceptibility of LDL to oxidation and oxidant-antioxidant status and their relationships in patients with psoriasis. METHODS: The study group included 35 patients with psoriasis (18 females and 17 males), and 35 sex- and age-matched healthy volunteers (16 females and 19 males). From blood samples, their lipids, lipoproteins, acute phase reactants, lipid peroxidation products [lipid hydroperoxide (LHP) and malondialdehyde (MDA)], antioxidant enzymes [glutathione peroxidase (GSH-Px), glutathione reductase (GR), superoxide dismutase (SOD), catalase (CAT)], total antioxidant status (TAS) and autoantibodies against oxidized low-density lipoprotein (AuAb-oxLDL) levels were determined. Moreover, the susceptibility of copper-induced in vitro oxidation of LDL was examined. RESULTS: The mean levels of atherogenic lipids (total cholesterol [TC], triacylglycerol [TG] and LDL cholesterol [LDL-C]), acute-phase reactants (CRP, ESR, PMNLs, ceruloplasmin and fibrinogen) and lipid peroxidation products, AuAb-oxLDL levels in patients with psoriasis were found to be significantly higher than those of healthy subjects. On the other hand, TAS and antioxidant enzyme activities (CAT, SOD and GSH-Px in erythrocyte and SOD in plasma) were significantly lower when compared to healthy subjects. The lag times [t(lag)], a measure of resistance to oxidation of LDL, were also lower. The levels of AuAb-oxLDL in patients were correlated with TC, LDL-C, plasma LHP, erythrocyte MDA, oxidized LDL-MDA (oxLDL-MDA), fibrinogen, CRP, PMNL levels and plasma SOD activities (r = 0.69, P < 0.01; r = 0.64, P < 0.01; r = 0.38, P < 0.05; r = 0.65, P < 0.01; r = 0.34, P < 0.05; r = 0.34, P < 0.05; r = 0.53, P < 0.01, r = 0.34, P < 0.05; r = -0.67, P < 0.01, respectively). On the other hand, t(lag) was correlated negatively with the levels of VLDL-TG, VLDL-TC and LDL-TG but positively correlated with the levels of TAS in psoriatics (r = -0.49, P < 0.01; r = -0.49, P < 0.01, r = -0.65, P < 0.05; r = 0.37, P < 0.05). CONCLUSIONS: It was concluded that the psoriatic patients could be considered as a group with an increased atherosclerotic risk because of increased oxidant stress, decreased antioxidant capacity and susceptibility in lipid profile and lipoprotein content to atherogenicity.     

Lipid peroxidation and erythrocyte antioxidant enzymes in patients with Behçet's disease

In spite of unknown etiology, it is now accepted that reactive oxygen species (ROS) produced by neutrophils may be related to the pathogenesis of Beh?et's Disease (BD). The objective was to investigate whether increased production of ROS may affect erythrocyte oxidant/antioxidant system in patients with BD. The levels of malondialdehyde (MDA), one of the end products of lipid peroxidation, in plasma and erythrocyte, and the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px), antioxidant enzymes, in erythrocyte, also C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) were measured in 22 patients in active stage of the disease and also in 30 healthy controls. Increased CRP, ESR, and MDA levels in plasma and erythrocyte and increased SOD but decreased GSH-Px activities in erythrocytes were observed in the patients, when compared to the controls. In addition, significantly positive correlations between plasma and erythrocyte MDA levels, and erythrocyte MDA-CRP, MDA-ESR, MDA-SOD, SOD-ESR and SOD-CRP levels, but negative correlation between plasma MDA and erythrocyte GSH-Px, were found in BD patients. It may be suggested that increased production of ROS in BD, as reflected by higher plasma and erythrocyte MDA levels, may impair erythrocyte membrane integrity and also may lead to the alterations in the erythrocyte antioxidant defense system, as reflected by higher SOD and lower GSH-Px activities in erythrocytes.     

Effects of trimetazidine on lipid peroxidation, antioxidant enzyme activities and plasma brain natriuretic peptide levels in patients with chronic cor pulmonale

An oxidant/antioxidant imbalance in favour of oxidants appears to occur in chronic cor pulmonale (CCP). Oxidative stress could also be a critical event in the pathogenesis of this condition. Trimetazidine (TMZ) has antioxidant properties and may affect the utilization of oxygen radicals. We investigated the effect of TMZ (20 mg three times daily, orally) on activities of erythrocyte malondialdehyde (MDA) and catalase (eCAT), erythrocyte and plasma glutathione peroxidase (GSH-Px) and plasma superoxide dismutase (pSOD) in CCP patients. We also assessed changes in plasma levels of brain natriuretic peptide (BNP) with TMZ therapy. Sixty CCP patients with significantly higher MDA and markedly lower pSOD, eCAT and GSH-Px (erythrocyte) activities than 24 healthy controls were randomly allocated to receive routine treatment or routine treatment plus TMZ. After 3 months' therapy, greater pSOD, eCAT and GSH-Px (erythrocyte and plasma) activities and lower MDA activity were found with TMZ treatment compared with routine treatment. Plasma BNP levels were significantly lower in TMZ-treated patients and higher in the routine treatment group than in the control group. TMZ improved antioxidant levels, decreased oxidative stress and decreased plasma BNP levels in CCP patients.     

Protein oxidation markers in the serum and synovial fluid of psoriatic arthritis patients

The role of oxidative stress has been studied in rheumatoid arthritis (RA) and other inflammatory joint diseases to some extent, but its importance in psoriatic arthritis (PsA) has rarely been investigated. The aim of this study was to analyze the levels of protein oxidation markers, sulfhydryl (SH) and carbonyl (CO) groups, in the synovial fluid (SF) and serum of PsA patients and compare them with the findings in RA and osteoarthritis (OA) patients. A total of 49 subjects with a knee-joint effusion including 16 PsA, 18 RA, and 15 OA patients were studied. In all patients, the levels of SH groups measured in the serum and SF inversely correlated with the number of white blood cells (WBC) (P<0.05) and the percentage of polymorphonuclear leukocytes (PMN) (P<0.01) in SF. Serum SH levels inversely correlated with serum erythrocyte sedimentation rate (ESR) (P<0.02) and C-reactive protein (CRP) (P<0.05) values. The SH levels in SF were significantly lower in patients affected by PsA and RA compared to OA cases (P<0.02). The serum SH levels in PsA were lower than OA (P<0.001) and higher than RA patients (P<0.05). The serum and synovial levels of CO groups in PsA, RA, and OA patients were similar. Our study provides novel evidence on the involvement of protein oxidation in PsA and confirms the important role of oxidative stress in the pathogenesis of RA. These data suggest that antioxidant agents can potentially be a useful addition to the conventional therapy in the management of these diseases.     

Decreased total antioxidant response and increased oxidative stress in Behcet's disease

Behcet's disease (BD) is a chronic systemic inflammatory disease. Inflammatory reactions trigger the oxidative stress and oxidants decrease the level of antioxidants. In the present study, we aimed to determine serum oxidative/antioxidative status in patients with BD. Serum antioxidative status was evaluated by measuring total antioxidant capacity (TAC), paraoxonase 1, arylesterase, sulfhydryl groups and ceruloplasmin in patients with BD and in healthy controls. Serum oxidative status was evaluated by measuring total peroxide (TP), lipid hydroperoxides and oxidative stress index (OSI). OSI was calculated by percent ratio of TP to TAC. Serum levels of TAC, sulfhydryl groups and activities of paraoxonase 1, arylesterase, and ceruloplasmin were significantly lower in patients than in controls (p < 0.001 for all). In contrast, TP, lipid hydroperoxides and OSI values were significantly higher in patients than in controls (p < 0.001 for all). Further, the level of TAC was negatively correlated with the levels of TP, lipid hydroperoxides and OSI both in the BD (r = -0.578, p < 0.01; r = -0.559, p < 0.01 and r = -0.552, p < 0.01, respectively) and the control groups (r = -0.469, p < 0.05; r = -0.351, p < 0.05 and r = -0.391, p < 0.05, respectively). These results indicate that the oxidant parameters increased and antioxidant parameters decreased in patients with BD; therefore, these patients might have been exposed to oxidative stress. We suggest that impaired oxidant/antioxidant balance should be taken into consideration in the follow-up of patients with BD.     

IL-32、MMP-13及IL-1O在类风湿关节炎中的表达及意义研究

目的探讨白细胞介素-32（IL-32）、基质金属蛋白酶-13（MMP-13）、白细胞介素-10（IL-10）在类风湿关节炎（RA）发生、病程发展中的意义。方法采用ELISA法,检测115例RA、76例对照组血清中IL-32、MMP-13及IL-10的水平,并与抗环瓜氨酸肽（CCP）抗体、类风湿因子（RF）、超敏C反应蛋白（hs-CRP）、红细胞沉降率（ESR）等指标进行相关性分析。结果 RA组与对照组比较,IL-32、MMP-13、IL-10水平升高,有统计学意义（P〈0.05）,RA重度活动期组IL-32、MMP-13显著高于稳定期组（P〈0.05）,IL-32、MMP-13水平与抗CCP抗体、ESR、hs-CRP、RF、DAS28、关节肿胀数和关节压痛数呈显著正相关（P〈0.01）,IL-10与ESR、hs-CRP呈正相关（P〈0.05或P〈0.01）。结论 IL-32、MMP-13及IL-10与RA的形成、病程发展有密切关系,可作为观察RA病情活动、疗效判断及预后的新依据。     

类风湿关节炎患者血清α-微管蛋白的检测及与临床实验室指标的相关性分析

目的利用酶联免疫吸附方法(ELISA)测定类风湿关节炎(RA)患者血清中的α-微管蛋白(α-tubulin)的水平,评价与临床实验室指标的关系,为寻找RA新的血清学标记物,探讨疾病的发病机制提供依据。方法选取RA患者68例,骨关节炎(OA)患者32例,健康对照(HC)32例,各取血清10μL,应用ELISA方法检测不同患者及健康对照血清α-tubulin水平,应用非配对资料的t检验分析不同患者与健康对照者之间α-tubulin水平的差异,相关性检验分析α-tubulin水平与RA患者年龄、病程、压痛关节数、肿胀关节数、红细胞沉降率(ESR)、C反应蛋白(CRP)水平、DAS28评分、类风湿因子(RF)水平、免疫球蛋白(Ig G、Ig A、Ig M)水平的相关性。结果 RA患者血清α-tubulin的水平明显高于骨关节炎患者及健康对照(P0.05),进一步分析提示α-tubulin水平与RA患者病程长短呈正相关(r=0.307,P=0.023),与血清类风湿因子水平及Ig A水平呈正相关(r=0.558,P=0.0001;r=0.395,P=0.004)。结论α-tubulin是RA新的血清学标记物,在RA患者的免疫反应中具有一定的意义,可能参与了RA的发病。     

基质金属蛋白酶3在类风湿关节炎患者中的临床意义

目的探讨基质金属蛋白酶3(MMP-3)水平在类风湿关节炎(RA)患者中的临床价值。方法选取2018年1月至2020年1月无锡市第九人民医院收治的74例RA患者为RA组,74例骨关节炎(OA)患者为OA组,另选择同期148例体检健康者为对照组。检测并比较3组红细胞沉降率(ESR)及血清C反应蛋白(CRP)、类风湿因子(RF)及MMP-3水平。采用Pearson相关分析RA组MMP-3水平与ESR、CRP、RF、28关节疾病活动度评分(DAS28)、28个关节肿胀关节数、28个关节压痛关节数、滑膜炎评分、骨髓水肿评分以及骨侵蚀评分相关性。根据RA患者DAS28、骨密度、是否器官/组织受累以及病程分为不同亚组,比较不同亚组间的MMP-3水平。采用受试者工作特征(ROC)曲线分析MMP-3在诊断RA中的临床价值。结果相较于OA组及对照组,RA组ESR及血清CRP、RF、MMP-3水平更高(P<0.05)。相较于OA组,RA组DAS28、28个关节肿胀关节数、28个关节压痛关节数、滑膜炎评分、骨髓水肿评分以及骨侵蚀评分更高(P<0.05)。相关性分析结果显示,RA组MMP-3水平与ESR、CRP、RF、DAS28、28个关节肿胀关节、28个关节压痛关节、滑膜炎评分、骨髓水肿评分以及骨侵蚀评分均呈正相关(P<0.05)。不同亚组间比较结果显示,关节疾病活动度高、骨质疏松、存在器官/组织受累、病程<1年及疾病活动期患者MMP-3水平更高(P<0.05)。ROC曲线结果显示,MMP-3诊断RA的曲线下面积为0.826,最佳临界值为41.77 ng/mL。结论RA患者血清MMP-3水平显著上升,其水平升高在诊断RA中具有一定临床价值。     

Oxidative stress and antioxidant status in non-metastatic prostate cancer and benign prostatic hyperplasia

OBJECTIVES: We undertook the present study to investigate the possible alteration of oxidant/antioxidant status in the circulation of patients with prostate cancer and benign prostatic hyperplasia. DESIGN AND METHODS: Thiobarbituric acid reactive substances (TBARS), the enzyme activities of superoxide dismutase (SOD), glutathione peroxidase (GPX), catalase (CAT) and copper (Cu) and zinc (Zn) levels were estimated in the erythrocytes of 25 non-metastatic prostate cancer patients, 36 benign prostatic hyperplasia (BPH) patients and 24 age- and sex-matched healthy subjects (controls). RESULTS: TBARS concentrations were significantly increased, while erythrocyte GPX and SOD activities were significantly decreased in the prostate cancer group versus controls (P < 0.001) and BPH group (P < 0.05). Zn levels were lowered in prostate cancer patients versus controls (P < 0.01) with no significant changes between BPH and cancer groups. Similarly, lipid peroxidation was increased (P < 0.05) with decreased SOD activity and Zn level (P < 0.05) in BPH versus controls. CONCLUSION: These results reveal an alteration in the lipid peroxidation index, with concomitant changes in the antioxidant defense system in prostate cancer patients compared to BPH patients. We hypothesize that an altered prooxidant-antioxidant balance may lead to an increase in oxidative damage and consequently may play an important role in prostate carcinogenesis.     

Antioxidant enzyme activities and malondialdehyde levels related to aging

BACKGROUND: Free oxygen radicals have been proposed as important causative agents of aging. We have evaluated age-related changes in antioxidant enzyme activities and lipid peroxidation. METHODS: We measured erythrocyte superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and plasma malondialdehyde (MDA) levels. One hundred and seventy six healthy subjects were divided into five groups: Group 1 (n = 25; 0.2-1 year-old), Group 2 (n = 28; 2-11 years), Group 3 (n = 23: 12-24 years), Group 4 (n = 40; 25-40 years), Group 5 (n = 60: 41-69 years). RESULTS: SOD activities in Group 5 were significantly lower than in the other groups (P < 0.001). GPx and CAT activities and MDA levels in Group 5 were significantly higher than the other groups (P < 0.001, respectively). CAT activity in Group 4 was significantly higher than group 1 and group 2 (respectively, P < 0.001), and in group 3 was high compared to Group 2 (P < 0.001). There were negative correlations between SOD activities and age (P < 0.001). Conversely, there were positive correlations between CAT, GPx and MDA levels and age (P < 0.001). CAT activities of women in Group 2 were found to be high compared to the men (P < 0.05). MDA levels of women in Group 5 were higher than in the male groups (P < 0.001). CONCLUSIONS: We found age-related differences in erythrocyte antioxidant enzyme activities. Furthermore, peroxidative injury is raised in the aging process.     

类风湿关节炎患者AECA、VEGF、IL-17的检测及临床相关性研究

目的通过对类风湿关节炎(rheumatoid arthritis,RA)患者血清抗血管内皮细胞抗体(Anti endothelial cell anti-bodies,AECA)、血浆血管内皮生长因子(Vascular endothelial growth factor,VEGF)和白细胞介素-17(interleukin-17,IL-17)的检测,以探讨AECA、VEGFI、L-17在RA患者发病、病情进展中的相关性及其内在联系。方法采用间接免疫荧光法(IIF)和双抗体夹心ELISA法检测86例RA、45例骨关节炎(OA)、30例健康对照AECA的阳性率和VEGFI、L-17水平,VEGFI、L-17水平与红细胞沉降率(ESR)、超敏C反应蛋白(hs-CRP)、类风湿因子(RF)等指标进行相关性分析。结果 RA患者AECA阳性率为8.1%,高于OA患者的阳性率2.2%和健康对对照的阳性率0%(P0.05);RA活动期AECA阳性率为16.7%,高于RA缓解期的阳性率3.6%(P0.05);RA患者血浆IL-17和VEGF水平显著高于OA组和健康对照组(P0.05);RA患者活动期血浆IL-17和VEGF水平明显高于RA缓解组及健康对照组(P0.01);RA患者AE-CA滴度、血浆IL-17、VEGF水平与ESR、hs-CRP、RF的指标呈正相关。结论 AECA、VEGFI、L-17三者与RA的发病、病情活动存在一定的关系,IL-17、VEGF水平变化及AECA的滴度可作为临床观察RA病情活动、判断疗效及预后等方面的参考指标。     

Effects of propylthiouracil, propranolol, and vitamin E on lipid peroxidation and antioxidant status in hyperthyroid patients.

OBJECTIVE: The purpose of this study was to examine lipid peroxidation and antioxidant states during hyperthyroidism states and after given different treatments. DESIGN AND METHODS: We examined 44 hyperthyroid patients and 19 euthyroid healthy controls. Patients were divided into three groups according to the treatment: Propylthiouracil (PTU) group, PTU + propranolol (PRP) group, PTU + PRP + vitamin E (vitE) group. RESULTS: In the hyperthyroid patients plasma malondialdehyde (MDA) levels were significantly high as compared to the control group (p < 0,001).There was a significant decrease in the MDA levels post-treatment (p < 0.001 in the PTU + PRP group and PTU + PRP + vitE group, p < 0.01 in the PTU group). In the hyperthyroidism, blood reduced glutathione (GSH) levels were lower, erythrocyte superoxide dismutase (SOD) and catalase (CAT) activities were higher than in the control group, but these changes were not significant. Post-treatment in each of the three groups the GSH levels were increased significantly as compared to the pretreatment levels (p < 0.001). There was significant decrease in the SOD activity post treatment (p < 0.01 in all three groups). Post-treatment CAT activity was decreased (p < 0.05 in the PTU group, p < 0.001 in the other two groups). The erythrocyte glutathione peroxidase (Gpx) activity was lower significantly in the hyperthyroidism as compared to the control group (p < 0.001). Post-treatment, in the three groups Gpx activity increased significantly as compared to the pretreatment levels (p < 0.05 in the PTU group, p < 0.001 in the PTU + PRP group and PTU + PRP + vitE group). CONCLUSION: We considered that giving all three treatments would be useful to the prevention of oxidative stress in the hyperthyroidism states.     

Serum cardiac markers in patients with acute myocardial infarction: oxidative stress, C-reactive protein and N-terminal probrain natriuretic Peptide

The aim of this study was to investigate the predictive value of an oxidative stress, C-reactive protein (CRP) and N-terminal probrain natriuretic peptide (NT-proBNP) biomarkers in acute myocardial infarction (AMI). The study population contained 100 patients with AMI and 40 healthy subjects. Malondialdehyde (MDA) was measured as thiobarbituric acid reactive substances. Total antioxidant status (TAC) was assayed with colorimetric method. CRP and NT-proBNP was quantitated by immunoassay. MDA, CRP and NT-proBNP levels were found significantly high in patients with AMI as compared to healthy controls (p<0.01). Patients were divided into six groups based on the presence of disease history before AMI. In patients with non-disease before AMI. MDA, CRP and NT-proBNP levels were lowest among the patient groups. MDA levels in patients with hyperlipidemia/ diabetes/renal disease were higher than the other groups. TAC levels in patients with hypertension were lower than as compared to healthy controls (p<0.05). CRP levels in hypertension + hyperlipidemia patients and NT-proBNP levels in cardiovascular + hypertension patients were found high as compared to other patient groups. It is concluded that serum levels of MDA, CRP and NT-proBNP were significantly increased in patients with AMI and these markers were strongly predictive in AMI.     

外周血白细胞介素-18与类风湿性关节炎相关性研究

目的：探讨外周血白细胞介素-18（IL-18）水平与类风湿性关节炎（RA）的相关性方法：应用酶联免疫吸附技术（ELSIA）检测168例健康体检者和60例稳定期、60例活动期RA患者的IL—18水平．同时检测WBC、RBC、HGB、PLT、血沉（ESR）、抗链球菌溶血素“O”（ASO）、类风湿因子（RF）、C反应蛋白（CRP）等实验室指标．结果：健康体检者、RA活动期与稳定期患者IL-18水平比较差异均无统计学意义（P〉0．05）：RA患者WBC、PLT、ESR、RF、CRP水平均显著高于健康体检者（P〈0．001）。RA活动期患者PLT、ESR、CRP水平均显著高于稳定期（P〈0．05）．结论：外周血IL-18可能与RA免疫炎症无关．     

酶联免疫吸附试验检测类风湿关节炎患者部分促炎因子水平的变化及意义

目的探讨采用酶联免疫吸附试验(ELISA)检测类风湿关节炎(RA)患者肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)、白细胞介素-17(IL-17)表达水平的变化。方法采用ELISA检测100例健康体检者和100例RA患者的TNF-α、IL-6及IL-17的表达水平,同时采用全自动生化仪检测类风湿因子(RF),用血球计数仪测定白细胞计数、红细胞计数、血小板计数(PLT)和红细胞沉降率(ESR)等实验室指标。结果 RA患者的TNF-α、IL-6及IL-17的表达水平以及RF、PLT和ESR的水平均高于健康对照组,差异有统计学意义(P<0.05)。结论 TNF-α、IL-6及IL-17与RA免疫炎症有关,ELISA可有效检测上述炎症因子的转录水平,对RA有辅助诊断作用。     

Effects of caffeic acid phenethyl ester on lipid peroxidation and antioxidant enzymes in diabetic rat heart

OBJECTIVES: The risk for cardiovascular disease is significantly high in diabetes mellitus. Experimental evidence suggests that oxidative stress plays a dominant role in the pathogenesis of diabetes mellitus. Caffeic acid phenethyl ester (CAPE), an active component of propolis, has several biological and pharmacological properties, including antioxidant, anti-inflammatory, anti-carcinogenic, antiviral, and immunomodulatory activities. In light of the antioxidant ability of CAPE, the effects of CAPE on the antioxidative status of cardiac tissue were investigated in streptozotocin (STZ)-induced diabetic rats. DESIGN AND METHODS: Twenty-six rats were randomly divided into three groups: group I, control, nondiabetic rats (n = 9); group II, STZ-induced, untreated diabetic rats (n = 7); and group III, STZ-induced, CAPE-treated diabetic rats (n = 10). In groups II and III, diabetes developed 3 days after intraperitoneal (ip) administration of a single 35 mg kg(-1) dose of STZ. Thereafter, while the rats in group II received no treatment, the rats in group III began to receive a 10 mumol kg(-1) ip dose of CAPE per day. After 8 weeks, the levels of malondialdehyde (MDA) and the activities of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) in the cardiac tissues of all groups were analyzed. RESULTS: In untreated diabetic rats, MDA markedly increased in the cardiac tissue compared with the control rats (P < 0.05). However, MDA levels were reduced to the control level by CAPE. The activities of SOD and CAT in the untreated diabetic group and the CAPE-treated diabetic group were higher than those of the control group (P < 0.05). Rats in the CAPE-treated diabetic group had reduced activities of SOD and CAT in comparison with the rats in the untreated diabetic group (P < 0.05). There were no significant differences in the activity of GSH-Px between the rats in the untreated diabetic group and the control group. However, the activity of GSH-Px was increased in CAPE-treated diabetic rats compared with the control and untreated diabetic rats (P < 0.05). CONCLUSION: These results reveal that diabetes mellitus increases oxidative stress in cardiac tissue and CAPE has an ameliorating effect on the oxidative stress via its antioxidant property.     

类风湿关节炎关节液中抗环瓜氨酸肽抗体的测定及临床意义

目的 检测类风湿关节炎(RA)患者关节液中抗环瓜氨酸肽(CCP)抗体,了解抗CCP抗体在RA关节液中的阳性率及对RA的临床意义.方法 应用酶联免疫吸附测定法检测43例RA患者关节液抗CCP抗体和对照组21例患者的关节液抗CCP抗体,并测定RA患者的一些临床及实验室指标.结果 43例RA患者中,关节液抗CCP抗体阳性的32例,阴性的11例.对照组2l例患者,其中4例UA关节液抗CCP抗体阳性,其余均呈阴性.RA组关节液抗CCP抗体的阳性率高于对照组,74.4%VS 19.0%(χ2=17.578,P<0.01).RA关节液抗CCP抗体阳性组与阴性组相比较,在年龄,病程和晨僵方面差异均无统计学意义,而关节液抗CCP抗体阳性组血沉(ESR)、C反应蛋白(CRP)和DAS 28评分均比阴性组高,ESR(80.43±20.18)mm/1 h VS(41.22±9.56)mm/1 h、CRP(39.88±10.30)mg/L VS(19.29±2.97)mg/L、DAS 28(5.70±0.51)分vs(4.90±0.70)分(均P<0.05),抗CCP抗体与ESR和CRP之间呈正相关(r=0.250,P<0.05,r=0.450,P<0.01).结论 RA关节液抗CCP抗体对RA的早期诊断及对疾病活动的判断有重要意义.     

Prolidase activity dysregulation and its correlation with oxidative-antioxidative status in chronic obstructive pulmonary disease

Background: Chronic obstructive pulmonary disease (COPD) is a consequence of an underlying chronic inflammatory disorder of the airways that is usually progressive and causes dysregulation in the metabolism of collagen. Prolidase has an important role in the recycling of proline for collagen synthesis and cell growth. Objective: We measured and compared prolidase activity in healthy individuals with COPD patients to find out that whether its activity might reflect disturbances of collagen metabolism in the patients. We also investigated oxidative–antioxidative status and its relationship with prolidase activity in this disease. Methods: Thirty voluntary patients with COPD and 30 healthy control subjects with similar age range and sex were included into the study. Plasma prolidase activities, total antioxidant capacity (TAC) and lipid peroxidation (LPO) levels were measured in the patient and control groups. Results: Plasma prolidase activity and TAC levels were significantly lower, and LPO levels were significantly higher in the patients than those in the control subjects (P<0.05, P<0.001, and P<0.001, respectively). Significant correlations were detected between plasma prolidase activity and TAC and LPO levels in the patients group (r=0.679, P<0.001; r=?426, P<0.05, respectively). Conclusions: The results suggest that oxidative–antioxidative balance and collagen turnover are altered by the development of COPD in human lungs, and prolidase activity may reflect disturbances of collagen metabolism in this pulmonary disease. Monitoring of plasma prolidase activity and oxidative–antioxidative balance may be useful in evaluating fibrotic processes and oxidative damage in the chronic inflammatory lung disease in human. J. Clin. Lab. Anal. 25:8–13, 2011. © 2011 Wiley‐Liss, Inc.     

抗CCP抗体、RF、CRP、ESR在类风湿关节炎诊断中的应用价值

目的 探讨抗环瓜氨酸肽(CCP)抗体、类风湿因子(RF)、C反应蛋白(CRP)、红细胞沉降率(ESR)在类风湿关节炎(RA)诊断中的意义.方法 选择RA患者42例(RA组),非RA疾病患者34例(非RA组),健康对照组21例,分别采用微粒子酶免疫分析法(MEIA)检测抗CCP抗体,用速率散射比浊法检测RF、CRP,采用Westergren法检测ESR.比较各组之间RF、抗CCP抗体有无显著性差异,同时对RA组抗CCP抗体、RF、ESR、CRP的相关性进行分析.结果 抗CCP抗体对RA的敏感度为76.2%(32/42),特异度为98.2%(54/55);RF对RA的敏感度为81.0%(34/42),特异度为90.9%(50/55);抗CCP抗体与CRP、ESR均无相关性(P>0.05),RF与CRP、ESR均无相关性(P>0.05).结论 抗CCP抗体的敏感度较RF低,但特异度比RF高;与CRP、ESR无相关性.     

充血性心力衰竭患者血清抗碳酸酐酶Ⅱ和Ⅲ自身抗体检测的意义

目的使用已建立的方法检测充血性心力衰竭(CHF)患者血清中的抗碳酸酐酶Ⅱ和Ⅲ自身抗体、抗氧化物及细胞因子水平,初步评价其临床意义。方法选取58例3个月~1年前曾发生心肌梗死的CHF患者和58名健康对照者,测定其血清抗碳酸酐酶Ⅱ和Ⅲ自身抗体、红细胞沉降率(ESR)、超氧化物歧化酶(SOD)等5种抗氧化物和白细胞介素2(IL-2)等5种细胞因子的水平。结果 CHF患者血清抗碳酸酐酶Ⅱ自身抗体和ESR水平显著高于对照组(P0.05),SOD、谷胱甘肽过氧化物酶(GPx)、过氧化氢酶(CAT)和总抗氧化能力(TAC)显著低于对照组(P0.05),丙二醛(MDA)水平显著高于对照组(P0.05)。CHF患者血清的IL-2和白细胞介素17(IL-17)水平较对照组显著升高(P0.05),白细胞介素6(IL-6)、肿瘤坏死因子α(TNF-α)和γ干扰素(IFN-γ)与对照组差异无统计学意义(P0.05)。结论 CHF患者可能存在自身免疫的现象,IL-2、IL-17和抗氧化能力的检测可能作为判断抗碳酸酐酶Ⅱ抗体出现的指标。