Association between intercellular adhesion molecule-1 to depression and blood-brain barrier penetration in cerebellar vascular disease

BACKGROUND Cerebral small vessel disease(CSVD)is a prevalent cerebrovascular disease in clinical practice that is often associated with macrovascular disease.A clear understanding of the underlying causes of CSVD remains elusive.AIM To explore the association between intercellular adhesion molecule-1(ICAM-1)and blood-brain barrier(BBB)penetration in CSVD.METHODS This study included patients admitted to Fuyang People’s Hospital and Fuyang Community(Anhui,China)between December 2021 and March 2022.The study population comprised 142 patients,including 80 in the CSVD group and 62 in the control group.Depression was present in 53 out of 80 patients with CSVD.Multisequence magnetic resonance imaging(MRI)and dynamic contrast-enhanced MRI were applied in patients to determine the brain volume,cortical thickness,and cortical area of each brain region.Moreover,neuropsychological tests including the Hamilton depression scale,mini-mental state examination,and Montreal cognitive assessment basic scores were performed.RESULTS The multivariable analysis showed that age[P=0.011;odds ratio(OR)=0.930,95%confidence interval(CI):0.880-0.983]and ICAM-1 levels(P=0.023;OR=1.007,95%CI:1.001-1.013)were associated with CSVD.Two regions of interest(ROIs;ROI3 and ROI4)in the white matter showed significant(both P<0.001;95%CI:0.419-0.837 and 0.366-0.878)differences between the two groups,whereas only ROI1 in the gray matter showed signi-ficant difference(P=0.046;95%CI:0.007-0.680)between the two groups.ICAM-1 was significantly correlated(all P<0.05)with cortical thickness in multiple brain regions in the CSVD group.CONCLUSION This study revealed that ICAM-1 levels were independently associated with CSVD.ICAM-1 may be associated with cortical thickness in the brain,predominantly in the white matter,and a significant increase in BBB permeability,proposing the involvement of ICAM-1 in BBB destruction.

EFFECTS OF ELECTROACUPUNCTURE ON EXPRESSION OF INTERCELLULAR ADHESION MOLECULE-1 IN THE RAT OF LOCAL CEREBRAL ISCHEMIA-REPERFUSION

Objective To investigate effects of electroacupuncture （EA） on expression of intercellular adhesion molecule-1 （ICAM-1） in the rat of local cerebral ischemia-reperfusion. Methods Eighty SD rats were randomly divided into a normal control group, a sham operation group, a model group and an EA treatment group, 20 rats in each group. The thread-obstruction method was used for preparation of ischemia-reperfusion model. Zea-Longa rating criteria were used for evaluation of nervous function disorder; Immunohistochemical SABC method was used for detection of ICAM-1 expression in the microvascular endothelial cell of the ischemic brain region, and ELISA method for the soluble ICAM-1 （slCAM-1） content in peripheral blood. Re. suits After cerebral ischemia-reperfusion, both ICAM-1 expression level in the microvascular endethelium cell of the ischemic brain region and slCAM-1 content in the peripheral blood significantly increased in the model group as compared with the normal group and the sham operation group （P〈0.01）; After EA treatment, the ICAM-1 expression level in the microvascular endothelial cell of the ischemic brain region and slCAM-1 content in the peripheral blood were significantly down-regulated in the EA treatment group as com- pared with the model group （P〈 0.05）. Conclusion After cerebral ischemia-reperfusion, the microvascular endothelial cell of the ischemic brain region releases ICAM-1, which induces inflammatory injury of cerebral tissues; EA treatment can decease the expression of ICAM-1, so as to prevent the brain from the injury.

Soluble intercellular adhesion molecule-1,D-lactate and diamine oxidase in patients with inflammatory bowel disease

AIM： To study the levels of serum soluble intercellular adhesion molecule-1 （sICAM-1）, plasma D-lactate and diamine oxidase （DAO） in patients with inflammatory bowel disease （IBD）, and the potential clinical significance. METHODS： Sixty-nine patients with IBD and 30 healthy controls were included in this study. The concentration of sICAM-1 was detected with enzyme-linked immunosorbent assay, the level of D-lactate and DAO was measured by spectroscopic analysis, and the number of white blood cells （WBC） was determined by routine procedure. RESULTS： The levels of sICAM-I, DAO, and WBC in IBD patients were significantly higher than those in the control group （P 〈 0,01）, sICAM-I in IBD patients was found to be closely related to the levels of DAO and D-lactate （212.94 ± 69.89 vs 6.35 ± 2.35, P = 0.000）, DAO 212.94 ± 69.89 vs 8.65 ± 3.54, P = 0.000） and WBC （212.94 ± 69.89 vs 7.40 ± 2.61, P = 0.000）, but no significant difference was observed between patients with ulcerative colitis and patients with Crohn＇s disease. The post-treatment levels of sICAM-I, D-lactate and WBC were significantly lower than before treatment （sICAM-I 206.57 ± 79.21 vs 146.21 ± 64.43, P = 0.000）, （D-lactate 1.46 ± 0.94 vs 0.52± 0.32, P = 0.000） and （WBC 7.24 ± 0.2.33 vs 5.21 ± 3.21, P = 0.000）. CONCLUSION： sICAM-1, D-lactate and DAO are closely related to the specific conditions of IBD, and thus could be used as a major diagnostic index.

Up-regulation of intestinal nuclear factor kappa B and intercellular adhesion molecule-1 following traumatic brain injury in rats

AIM: Nuclear factor kappa B (NF-κB) regulates a large number of genes involved in the inflammatory response to critical illnesses, but it is not known if and how NF-KB is activated and intercellular adhesion molecule-1 (ICAM-1) expressed in the gut following traumatic brain injury (TBI). The aim of current study was to investigate the temporal pattern of intestinal NF-κB activation and ICAM-1 expression following TBI. METHODS: Male Wistar rats were randomly divided into six groups (6 rats in each group) including controls with sham operation and TBI groups at hours 3, 12, 24, and 72, and on d 7. Parietal brain contusion was adopted using weight-dropping method. All rats were decapitated at corresponding time point and mid-jejunum samples were taken. NF-KB binding activity in jejunal tissue was measured using EMSA. Immunohistochemistry was used for detection of ICAM-1 expression in jejunal samples. RESULTS: There was a very low NF-κB binding activity and little ICAM-1 expression in the gut of control rats after sham surgery. NF-KB binding activity in jejunum significantly increased by 160% at 3 h following TBI (P<0.05 vs control), peaked at 72 h (500% increase) and remained elevated on d 7 post-injury by 390% increase. Compared to controls, ICAM-1 was significantly up-regulated on the endothelia of microvessels in villous interstitium and lamina propria by 24 h following TBI and maximally expressed at 72 h post-injury (P<0.001). The endothelial ICAM-1 immunoreactivity in jejunal mucosa still remained strong on d 7 post-injury. The peak of NF-κB activation and endothelial ICAM-1 expression coincided in time with the period during which secondary mucosal injury of the gut was also at their culmination following TBI. CONCLUSION: TBI could induce an immediate and persistent up-regulation of NF-κB activity and subsequent up-regulation of ICAM-1 expression in the intestine. Inflammatory response mediated by increased NF-κB activation and ICAM-1 expression may play an important role in the pathogenesis of acute gut mucosal injury following TBI.

The Value of the Soluable Intercellular Adhesion Molecule-1 Levels in Matermal Serum for Determination of Occult Chorioamnionitis in Premature Rupture of Membranes

To compare the diagnostic value of soluble intercellular adhesion molecule 1 (sICAM-1) with that of c-reactive protein (CRP) for detecting chorioamnionitis (CAM) in serum of women with premature rupture of membranes (PROM), 55 pregnant women with PROM, including 18 pregnant women with preterm premature rupture of membranes (PPROM) and 20 normal pregnant women at term (TPROM) were studied. Maternal serum were measured by Sandwish enzyme-linked immunoabsorbent assay (ELISA) for sICAM. CAM was histologically confirmed after delivery. The results revealed that (1) maternal serum levels of sICAM-1 and CRP were significantly higher in women with PROM than those without it; (2) maternal serum levels of sICAM-1 and CRP were significantly higher in women with CAM than those without it; (3) serum levels of sICAM-1 in PPROM women were similar to those in TPROM women, whereas serum levels of CRP in PPROM women were significantly higher than those in TPROM women; (4) the sensitivity, specificity, positive predictive value, negative predictive value, Kappa index and area under receiver operating characteristic (ROC) curve of maternal serum sICAM-1 (cutoff 104.7 ng/ml) and CRP(cutoff 1.03 mg/dl) for diagnosing CAM were 100 %, 91.2 %, 87.5 %, 100 %, 0.20, 0.995 and 81.0 %, 73.5 %, 65.4 %, 86.2 %, 0.13, 0.811, respectively; (5) among the mild histological CAM group, severe histological CAM group and clinical CAM group, the difference in maternal serum levels of sICAM-1 were significantly (P<0.001), with the order of concentration from high level to low level corresponding to the severity of CAM. It is concluded that maternal serum level of ICAM-1 is superior to that of CRP as biomarker for diagnosing intraamniotic infection in pregnant women with PROM.

Mild hypothermia effects on intercellular adhesion molecule-1 and serum interleukin-6 expression in brain tissues of a rat focal ischemia model

BACKGROUND： Previous studies have confirmed the neuroprotective effect of mild hypothermia on ischemic brain injury. OBJECTIVE： To investigate the effects of mild hypothermia on intercellular adhesion molecule-1 expression and serum interleukin-6 levels in ischemic brain tissues of focal brain ischemia rats, and to explore the neuroprotective effects of mild hypothermia on ischemic brain injury. DESIGN, TIME AND SETTING： A randomized, controlled, neurobiological experiment was performed at the Central Laboratory, First Affiliated Hospital, Xinxiang Medical College, China from February to July 2006. MATERIALS： Thirty healthy, adult, Sprague Dawley rats were used to establish middle cerebral artery occlusion models using the suture method, The immunohistochemistry （streptavidin-biotin-peroxidase complex method） kit was purchased from Boster, China. Interleukin-6 radioimmunoassay was supplied by Institute of Radioimmunity, Technology Development Center, General Hospital of Chinese PLA. METHODS： The rats were equally and randomly assigned into mild hypothermia and control groups, and middle cerebral artery occlusion models were established. The rectal temperature was maintained at （37 ±0.5）℃ in the control group. In the mild hypothermia group, the rectal temperature was maintained at （33±1）℃. MAIN OUTCOME MEASURES： At 12 hours after model establishment, the ischemic brain hemispheres were coronally sliced at the level of the optic chiasm. The number of intercellular adhesion molecule-1-positive vessels per high-power field was observed with an optical microscope. Serum interleukin-6 levels were measured by radioimmunoassay. RESULTS： Compared with the control group, intercellular adhesion molecule-1 and serum interleukin-6 expressions were significantly decreased in ischemic brain tissues of the mild hypothermia group （P 〈 0.01）. CONCLUSION： Mild hypothermia exhibits a neuroprotective effect by reducing serum interleukin-6 and intercellular adhesion molecule-1 expression following cerebral ischemia.

Expression of Intercellular Adhesion Molecule-1 in Immune Response of Inner Ear

To understand the role of intercellular adhesion molecule-1 (ICAM-1) in immune response of the inner ear, inner ear immune response was induced in rats by inoculation of keyhole limpet hemocyanine (KLH) into the scala tympani of the animals who had been systemically sensitized. The expression of ICAM-1 in the inner ear was immunohistochemically examined. ICAM-1 was found in the epithelium of the spiral modiolar vein (SMV) with its collecting venules (CVs) as early as 6 h after challenge. Expression of ICAM-1 was observed on the epithelium of the endolymphatic sac (ES) and perisaccular region at 12 h. The intensity of ICAM-1 staining reached its peak within 24 - 48 h in these sites of the inner ear. By day 28, most specimens were devoid of appreciable staining for ICAM-1. Our study demonstrates that adhesion molecules play an important role in extravasation of inflammatory cells from the systemic circulation in the process of inner ear immune response. It also shows that cytokines that control expression of adhesion molecules may be released by cells outside ES, besides those cells in the ES.

Changes of soluble intercellular adhesion molecule-1 in the serum from patients with acute cerebral infarction

objective: To observe the changes of soluble intercellular adhesion molecule-1(sICAM-1) in the serum of patients with acute cerebral infarctlon (ACI) and their clinical significance. Methods: The concen-tration of sICAM-1 in the serum of 91 patients with ACI was determined with ELISA and then the results were compared wlth those of 43 patients with cerebral hemorrhage and 30 healthy individuals. Results: In the 24th hour after infarction. the concentration of sICAMu-1 in the serum was significantly higher in patients with ACI than in patients with cerebral hemorrhage and normal controls (P< 0. 01). In the patients with ACI, the concentration exhibited an decreasing tendency in the period from the 24th hour to the 14th day andwas correlated with the focal size of cerebral infarction. During the first 14 days after infarction, the concen-tration was significantly higher in the patients with the complication of infection than in those without. Con-clusion: sICAM-1 is closely correlated with clinical manifestation of ACI.

Relationship of plasma homocysteine, soluble intercellular adhesion molecule-1, high mobility group box 1 protein with carotid intima-media thickness in elderly patients with type 2 diabetes mellitus

Objective:To explore the relationship of plasma homocysteine(Hcy),soluble intercellular adhesion molecule-1(sICAM-1)and high mobility group box 1 protein(HMGB1)with carotid intima-media thickness(c-IMT)in elderly patients with type 2 diabetes mellitus.Methods:A total of 100 elderly patients who were diagnosed as type 2 diabetes mellitus in Baogang Hospital of Inner Mongolia from June 2017 to May 2020 were chosen as research objects.According to c-IMT,they were divided into the normal group(n=35),the mild to moderate group(n=41)and the severe group(n=24).The expression levels of plasma Hcy,sICAM-1 and HMGB1 were compared between groups respectively.Pearson’s correlation coefficient was used to analyze the relationship of plasma Hcy,sICAM-1,HMGB1 with c-IMT.Results:The comparison in plasma Hcy,sICAM-1,HMGB1 and c-IMT among the three groups of patients was of statistical significance(p<.05).The results of correlation analysis showed that the expression levels of plasma Hcy,sICAM-1 and HMGB1 were positively correlated with c-IMT in elderly patients with type 2 diabetes mellitus(r=.627,.598,.614;p<.05).Conclusions:The expression levels of plasma Hcy,sICAM-1 and HMGB1 are abnormally increased in elderly patients with type 2 diabetes mellitus,and related to c-IMT,which can provide a strong evidence for clinical diagnosis and treatment by detecting their levels in clinical practice.

Clinical significance of serum intercellular adhesion molecule-i detection in patients with hepatocellular carcinoma

INTRODUCTION Since the late 1980s,studies on the expression ofintercellular adhesion molecule-1(ICAM-1)inpatients with malignancies have demonstrated thatICAM-1 may strongly express in two forms in suchdiseases:membranous one on the surface of tumorcells(membrane-bound ICAM-1)and soluble one incirculation(soluble ICAM-1,sICAM-1).

miR-92a、sICAM-1、VEGF在乳腺癌组织中的表达及其与超声血流参数的相关性研究

目的探讨微小核糖核酸-92a(miR-92a)、可溶性细胞间黏附分子-1(sICAM-1)、血管内皮生长因子(VEGF)在乳腺癌组织中的表达差异,并分析其与患者超声血流参数的相关性。方法选取乳腺癌患者102例作为乳腺癌组,同期收集乳腺良性肿瘤患者100例作为对照组。比较miR-92a、sICAM-1、VEGF在两组间的表达,分析其诊断价值。采用多普勒超声检测患者病变部位的血流参数,主要包括动脉血流峰值速度(PSV)、舒张末期血流速度(EDV)、脉动指数(PI)、阻力指数(RI),分析miR-92a、sICAM-1、VEGF与乳腺超声血流参数的相关性。结果乳腺癌组患者miR-92a、sICAM-1、VEGF水平明显高于对照组,差异具有统计学意义(P<0.05),三项联合检测诊断乳腺癌的曲线下面积(AUC)为0.897,灵敏度为89.3%,特异度为90.0%。Logistic回归分析显示miR-92a、sICAM-1、VEGF是乳腺癌发生的重要危险因素(P<0.05)。乳腺癌组患者的PSV、EDV明显高于对照组,PI、RI明显低于对照组,差异具有统计学意义(P<0.05)。Spearman相关性分析结果显示miR-92a、sICAM-1、VEGF水平与PSV、EDV呈正相关,与PI、RI呈负相关(P<0.05)。结论miR-92a、sICAM-1、VEGF在乳腺癌患者中明显升高,且与患者超声血流参数密切相关,是乳腺癌发生的重要危险因素,三项联合检测有助于乳腺癌的早期诊断及病情评估。

Serum inter-cellular adhesion molecule 1 is an early marker of diagnosis and prediction of severe acute pancreatitis

AIM:To determine if serum inter-cellular adhesion molecule 1(ICAM-1)is an early marker of the diagnosis and prediction of severe acute pancreatitis(SAP) within 24 h of onset of pain,and to compare the sensitivity,specificity and prognostic value of this test with those of acute physiology and chronic health evaluation(APACHE)Ⅱscore and interleukin-6(IL-6). METHODS:Patients with acute pancreatitis(AP)were divided into two groups according to the Ranson's criteria:mild acute pancreatitis(MAP)group and SAP group.Serum ICAM-1,APACHEⅡand IL-6 levels were detected in all the patients.The sensitivity,specificity and prognostic value of the ICAM-1,APACHEⅡscore and IL-6 were evaluated. RESULTS:The ICAM-1 level in 36 patients with SAP within 24 h of onset of pain was increased and was significantly higher than that in the 50 patients with MAP and the 15 healthy volunteers(P<0.01).The ICAM-1 level(25 ng/mL)was chosen as the optimum cutoff to distinguish SAP from MAP,and the sensitivity,specificity,positive predictive value,negative predictive value(NPV),positive likelihood ratio and negative likelihood ratio were 61.11%,71.42%,0.6111,0.7142, 2.1382 and 0.5445,respectively.The area under the curve demonstrated that the prognostic accuracy of ICAM-1(0.712)was similar to the APACHE-Ⅱscoring system(0.770)and superior to IL-6(0.508)in distinguishing SAP from MAP. CONCLUSION:ICAM-1 test is a simple,rapid and reliable method in clinical practice.It is an early marker of diagnosis and prediction of SAP within the first 24 h after onset of pain or on admission.As it has a relatively low NPV and does not allow it to be a stand-alone test for the diagnosis of AP,other conventional diagnostic tests are required.

血浆ET-1、D-D、sVCAM-1、ICAM-1水平预测突发性耳聋患者预后的价值

目的探讨血浆内皮素-1(ET-1)、D-二聚体(D-D)、血浆可溶性血管细胞黏附分子-1(sVCAM-1)、细胞间黏附因子-1(ICAM-1)在预测突发性耳聋患者预后方面的价值。方法选取2020年6月—2022年6月上海市杨浦区控江医院收治的老年突发性耳聋患者130例,作为观察组。选取同期检查的健康体检者120例,作为对照组。采用酶联免疫法(ELISA)测量2组患者血浆ET-1、D-D、sVCAM-1、ICAM-1水平。采用受试者工作特征(ROC)曲线评估血浆ET-1、D-D、sVCAM-1、ICAM-1水平预测突发性耳聋患者预后的价值。结果观察组血浆ET-1、D-D、sVCAM-1、ICAM-1水平显著高于对照组,差异有统计学意义(P<0.05)。与高频突发性耳聋相比,低频突发性耳聋患者血浆ET-1、D-D、sVCAM-1、ICAM-1水平更高,差异有统计学意义(P<0.05)。随着突发性耳聋患者听力损失的加重,血浆ET-1、D-D、sVCAM-1、ICAM-1水平显著升高,差异有统计学意义(P<0.05)。与治疗有效组相比,治疗无效组血浆ET-1、D-D、sVCAM-1、ICAM-1水平显著提升,差异有统计学意义(P<0.05)。血浆ET-1、D-D、sVCAM-1和ICAM-1联合应用时预测治疗有效的灵敏度、特异度高于单一指标预测(P<0.05)。结论血浆ET-1、D-D、sVCAM-1、ICAM-1水平升高与突发性耳聋的发生及预后有一定的关系。上述治疗联合检测将有助于临床更好地评价突发性耳聋患者的预后。

Intercellular Adhension Molecule-1 in the Pathogenesis of Heroin-induced Acute Lung Injury in Rats

The expression of intercellular adhesion molecule-1 (ICAM-1) in the pathogenesis of heroin-induced acute lung injury (ALI) in rats was investigated. The model of ALI was established by intravenous injection of heroin into tail vein in rats. Thirty-six rats were randomly divided into heroin-treated groups (1 h, 2 h, 4 h, 6 h and 24 h) and normal control group. Changes in histopathologic morphology and biological markers of ALI were measured. The expression of ICAM-1 in lung tissue was detected by using immunohistochemistry and RT-PCR. The results showed that the W/D ratio and protein contents in BALF of the heroin-treated groups were significantly higher than that of the control group (P<0.01). The histopathological changes in the lung tissue were more obvious in heroin-treated groups. The ICAM-1 protein and mRNA expression in the lung tissue of heroin-treated groups were significantly increased as compared with that of the control group (P<0.01), and correlated with the ALI parameters in a time-dependent manner. Increasing of ICAM-1 expression was involved in the formation of heroin-induced lung injury. Furthermore, the level of expression was positively correlated with the severity of lung injury.

Cytokine-Induced Cell Surface Expression of Adhesion Molecules in Vascular Endothelial Cells In vitro

Regulation of the adhesion molecules expression by cytokine in vascular endothelial cells was investigated. Human umbilical vein endothelial cells (HUVEC) were stimulated with cytokines, TNF α (1-250 U/ml) or IL 1β (0.1-50 U/ml) for 24 h. HUVEC were also cultured with cytokines, TNF α (100 U/ml) or IL 1β (10 U/ml), for 4-72 h, cell surface expression of adhesion molecules (ICAM 1 and VCAM 1) were detected and quantitated by immunocytochemical methods and computerized imaging analysis technique. Adhesion molecules expression were up regulated by TNF α, IL 1β in a concentration and time dependent manner. Some significant differences were observed between the effects of cytokines on the ICAM 1 and on VCAM 1 expression. Cytokines might directly induce the expression of ICAM 1 and VCAM 1 in vascular endothelial cells. Our observations indicate differential functions of the two adhesion molecules during the evolution of inflammatory responses in stroke.

Monocyte chemotactic protein-1 and soluble adhesion molecules as possible prognostic markers of the efficacy of antiviral treatment in chronic hepatitis C

AIM:To explain the role of Monocyte chemotactic protein-1 (MCP-1) and soluble adhesion molecules in chronic hepatitis C during the treatment of interferon alpha (IFNα) 2 b and ribavirin (RBV). METHODS:Concentrations of MCP-1,soluble adhesion molecules intercellular adhesion molecule-1 (sICAM-1),sP- selectin,interleukin (IL) 6,and IL10 in serum were estimated in the group of 40 patients with chronic hepatitis C treated with IFNalpha2 b and RBV in 0,16,32,48 wk of the therapy, RESULTS:In chronic hepatitis C,before and during the treatment,the serum levels of MCP-1 and sP-selectin in responders were similar to those of healthy subjects.In non- responders (NR),MCP-1 increased in the course of IFNc^+RBV treatment,differences were statistically significant as compared to responders.MCP-1 correlated statistically with the activity of periportal inflammation (r=0.35,P<0.05) but not with staging of liver fibrosis,sICAM-1 positively correlated with inflammatory activity and fibrosis in NR.sP-selectin did not correlate with histological findings in the liver.The MCP-1 correlated with the soluble form of sP-selectin concentrations (r= 6,P<0.001) and with IL-10 level in NR (r=0.4,P<0.05).There was no correlation observed between the concentration of MCP-1 and sICAM-1,IL-6 during the treatment. CONCLUSION:MCP-1 concentration may be a prognostic marker of the efficacy of IFN+RBV therapy in patients with chronic hepatitis C.

维持性血液透析患者血清sICAM-1、sVCAM-1水平和SOD活性及其与冠状动脉钙化的关系

目的:分析维持性血液透析(MHD)患者血清可溶性细胞间黏附分子1(sICAM-1)和可溶性血管细胞黏附分子1(sVCAM-1)水平及超氧化物歧化酶(SOD)活性,探讨其与冠状动脉钙化(CAC)的关系。方法:回顾性分析102例MHD患者(MHD组)的临床资料,另招募同期接受健康体检的74名志愿者(健康体检组)。MHD组患者经多层螺旋CT(MSCT)检查行CAC分数(CACs)评定,并将其分为无钙化组、轻度钙化组、中度钙化组和重度钙化组。比较2组研究对象一般资料和血清sICAM-1、sVCAM-1水平及SOD活性,分析不同钙化程度组患者血清中钙(Ca)、磷(P)、甲状旁腺激素(PTH)、sICAM-1和sVCAM-1水平及SOD活性。采用Pearson相关分析法分析MHD患者血清sICAM-1和sVCAM-1水平及SOD活性与CACs的相关性。结果:与健康体检组比较,MHD组患者血清sICAM-1和sVCAM-1水平均明显升高(P<0.01),SOD活性明显降低(P<0.01)。与无钙化组比较,轻度、中度和重度钙化组患者血清PTH、sICAM-1和sVCAM-1水平均明显升高(P<0.05),SOD活性均明显降低(P<0.05);中度和重度钙化组患者血清P水平均明显升高(P<0.05)。与轻度钙化组比较,中度和重度钙化组患者血清P、PTH、sICAM-1和sVCAM-1水平均明显升高(P<0.05),SOD活性均明显降低(P<0.05)。与中度钙化组比较,重度钙化组患者血清sICAM-1、sVCAM-1和P水平均明显升高(P<0.05),SOD活性明显降低(P<0.05)。MHD患者血清SOD活性与CACs呈负相关关系(r=-0.484,P<0.01),sICAM-1和sVCAM-1水平与CACs呈正相关关系(r=0.441,P<0.01;r=0.561,P<0.01)。结论:MHD患者血清sICAM-1和sVCAM-1水平及SOD活性异常,并且随着SOD活性降低和sICAM-1及sVCAM-1水平升高,MHD患者的CAC程度加重。

心痛泰颗粒对动脉粥样硬化ApoE^(−/−)小鼠ox-LDL、ICAM-1和VCAM-1表达的影响

目的:探讨心痛泰颗粒对动脉粥样硬化ApoE^(−/−)小鼠氧化型低密度脂蛋白(ox-LDL)、细胞间黏附分子1(ICAM-1)和血管细胞黏附分子1(VCAM-1)表达的影响及其机制。方法:6~8周龄SPF级健康雄性ApoE^(−/−)小鼠72只,采用高脂饮食喂养12周进行造模,另设SPF级健康雄性C57BL/6J野生小鼠12只为对照组,予以普通饲料喂养。各组相应药物给药8周后,观察各组小鼠体质量及一般情况,采用生化试剂盒检测小鼠血清中总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)和低密度脂蛋白胆固醇(LDL-C)含量,HE染色和油红O染色观察主动脉病理结构,ELISA法检测血清ox-LDL及主动脉组织中ICAM-1和VCAM-1水平,Western blot法检测主动脉NADPH氧化酶4(NOX4)、NOX亚单位p22phox、核因子抑制蛋白激酶α(IKK-α)、IKK-β和核因子κB(NF-κB)蛋白表达情况。结果:与对照组比较,模型组小鼠体质量增加(P<0.05),且毛发晦暗无光泽、局部脱落,抓起反应迟钝;血清TC、TG和LDL-C上升,HDL-C下降(P<0.05),血清ox-LDL水平上升(P<0.05),主动脉ICAM-1和VCAM-1水平升高(P<0.05),主动脉NOX4、p22phox、IKK-α、IKK-β和NF-κB蛋白表达增加(P<0.05)。与模型组比较,各用药组小鼠体质量下降(P<0.05),且毛发脱落及反应灵活程度亦有所改善;血清TC、TG和LDL-C降低,HDL-C升高(P<0.05),血清ox-LDL水平下降(P<0.05),主动脉ICAM-1和VCAM-1水平降低(P<0.05),主动脉NOX4、p22phox、IKK-α、IKK-β和NF-κB蛋白表达减少(P<0.05)。HE及油红O染色显示,模型组小鼠血管内可见典型动脉粥样硬化斑块,且红染区域分布广泛;各用药组与模型组比较,以上情况均有不同程度减轻。结论:心痛泰颗粒可减少高脂饮食诱导的ApoE^(−/−)小鼠动脉粥样硬化斑块面积,下调血清TC、TG和LDL-C水平,升高HDL-C水平,减少血清ox-LDL水平,下调主动脉ICAM-1和VCAM-1水平,抑制主动脉NOX4、p22phox、IKK-α、IKK-β和NF-κB蛋白的表达,改善动脉粥样硬化。

Ubiquitin Reduces Expression of Intercellular Adhesion Molecules and Tumor Necrosis Factor-α in Lung Tissue of Experimental Acute Lung Injury

Background Intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) are two important cytokines in inflammatory response, which may induce rolling and adhesion of both leukocytes and lymphocytes, while modulating vascular permeability at the same time. These adhesion molecules usually serve as surrogate markers of activation and injury of vascular endothelial cells. Tumor necrosis factor-α (TNF-α) is a key factor to induce the expression and production of the above cell adhesion molecules. However, it remains to be elucidated whether exogenous ubiquitin exerts any effect on the cytokines in sepsis-induced ALI. Methods Sixty mice were devided randomly into five groups with twelve mice in each group, i.e. CLP group, SHAM group, UB1 group (10 mg/kg), UB2 group (5 mg/kg) and UB3 group(1 mg/kg). Mice of SHAM group underwent sham operation, and other four groups underwent CLP. Six hours after surgery, mice of three UB groups received ubiquitin by caudal vein injection while CLP and SHAM group received vehicle. Seven hours after surgery, blood and lungs of all mice were collected. ICAM-1, VCAM-1 and TNF-α level of 9% lung homogenate and serum TNF-α level were measured by ELISA. Results Pulmonary ICAM-1, VCAM-1 and TNF-α level of three UB groups were lower than CLP and SHAM group, and there were several comparisons with a statistically significant difference. Serum TNF-α level of three UB groups were slightly lower than CLP group, but far higher than SHAM group. Pulmonary ICAM-1 level, VCAM-1 level and serum TNF-α level of UB3 group were lower than UB1 and UB2 group, and there was a significant difference in VCAM-1 between UB3 and UB1 group. Pulmonary TNF-α level of UB3 group was slightly higher than UB1 and UB2 group.

The effects of coxsackievirus B3 infection on induction of ICAM-1 in cardiac myocytes and on Iymphocyte-myocyte adhesion

objective:To observe the effects of coxsackievirus B3(CoxB3) infection on-induction of intercellu lar adhesion molecule-1 (ICAM-1) in cardiac myocytes and on lymphocyte-myocyte adhesion. Metkods: ICAM 1 expression on cultured neonatal rat cardiac myocytes infected by CoxB3 was determined through enzyme linked immunosorbent assay (ELISA) analysis. Lymphocyte-myocyte adhesion was observed with adherence assay and monoclonal antibodies to adhesion molecule inhibition. Results:ICAM-1 expression on cardiac my ocytes was markedly induced after exposure to CoxB3 100 or 200 TCID50/ml infectious dose for 24~48 h (P<0. 05). Adhesion of rat activated lymphocytes to myocytes was stimulated by CoxB3 infection,and the effects of CoxB3 infection on adherence was significantly inhibited by anti-lymphocyte function antigen-1 (LFA-12)monoclonal antibodies (inhibition rate 40. 6% and 26. 45 % respectively). Couclusion:CoxB3 infec tion promotes lymphocyte-myocyte adhesion through inducing ICAAM-1 expression on cardiac myocytes.