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.

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.

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).

中药咳喘落对实验性哮喘豚鼠ECP和sICAM-1的影响

目的 探讨中药咳喘落对哮喘豚鼠可溶性细胞间粘附分子 -1(sICAM -1)、嗜酸性粒细胞及其脱颗粒产物嗜酸性粒细胞阳离子蛋白 (ECP)等的影响 ,阐明咳喘落治疗哮喘抗气道变应性炎症的作用机制。方法 采用荧光酶标记法、双抗体夹心ELISA法和密度梯度细胞分离法分别测定了哮喘豚鼠血浆中ECP ,sICAM -1的含量和肺泡灌洗液中嗜酸性粒细胞分类计数。结果 哮喘豚鼠血浆中ECP ,sICAM -1的含量以及肺泡灌洗液中细胞总数和低密度嗜酸性粒细胞数均显著高于正常组 (P <0 .0 1) ,经咳喘落和地塞米松治疗后显著下降 (P <0 .0 1) ,接近正常水平 (P >0 .0 5 )。结论 咳喘落通过调节白细胞介素 -5的水平 ,抑制嗜酸性粒细胞在气道内募集及其毒性颗粒蛋白的释放 ,从而发挥它抗气道变应性炎症的作用。

蒺藜总皂苷对大鼠缺血再灌注损伤心肌ICAM-1表达及中性粒细胞浸润的影响

目的观察蒺藜总皂苷对缺血再灌注损伤心肌炎症因子ICAM-1表达及中性粒细胞浸润的影响。方法可逆性冠脉左前降支结扎缺血45min再灌注2h复制MI/R模型,SD雄性大鼠32只,随机分成假手术组、模型组、GSTT大剂量组、GSTT小剂量组,每组8只。HE染色观察心肌中性粒细胞浸润,测定心肌MPO活性,免疫组化测定心肌组织ICAM1的表达。结果HE染色镜下观察模型组心肌中性粒细胞浸润严重,而GSTT大、小剂量组则较轻;GSTT大、小剂量组MPO活性显著降低(P<0.01或0.05);缺血45min再灌注2h心肌组织ICAM1无明显表达。结论GSTT对MI/R炎症损害有保护作用,可降低MPO活性,减轻中性粒细胞浸润。

雌二醇抑制实验性自身免疫性脑脊髓炎与其下调细胞间粘附分子1和干扰素γ的表达有关

目的:探讨雌二醇(estradiol,E2)对去卵巢后实验性自身免疫性脑脊髓炎(Experimental autoimmune encephalomyeli-tis,EAE)大鼠的免疫抑制作用及其机制。方法:制备去卵巢后10天的EAE动物模型,随机分为EAE组、E2治疗组和佐剂组。E2治疗组从免疫后(Post-inoculation,p.i.)0～5天每日肌注E2(250μg/kg)一次。观察各组在不同时间点的血清E2浓度、血清和脑脊液中白蛋白含量比值(CSF to serum albumin quotient,QA),通过QA评定血脑屏障(Blood-brain barrier,BBB)的损害。在p.i.6、8、10、12、14、16天处死动物,取脑和脊髓用免疫组化技术检测不同部位细胞间粘附分子1(Intercellular adhension molecule-1,I-CAM-1)和干扰素γ(Interferon-γ,IFN-γ)的表达,并对EAE组ICAM-1和IFN-γ进行相关分析。结果:在p.i.6～12天E2治疗组血清E2浓度较EAE组升高(F=1666.49,P<0.05)。EAE组QA在p.i.8天达峰值(0.31±0.07),E2治疗组QA在p.i.14天达峰值(0.20±0.04),E2治疗组QA值幅度低且峰值出现时间较EAE组延迟(F=26.20,P<0.05)。E2治疗组临床症状评分(0.53±0.92)较EAE组(2.07±1.67)降低(t=2.93,P<0.05);E2治疗组体重减轻(6.73±3.53)较EAE组(15.40±4.03)减少(t=6.26,P<0.05);E2治疗组发病率(27%)较EAE组(73%)降低(χ2=6.53,P<0.05)。在p.i.10～16天,E2治疗组ICAM-1的表达较EAE组降低(F=21.01,P<0.05),E2治疗组IFN-γ的表达较EAE组降低(F=26.19,P<0.05)。EAE组ICAM-1与IFN-γ表达呈显著正相关性(r=0.87,P<0.01)。结论:E2能够有效抑制EAE,其抑制机制与E2下调ICAM-1、IFN-γ的表达,进而保护BBB的功能和促使Th细胞发生转分化有关。

花生四烯酸抑制饱和脂肪酸诱导的血管内皮细胞单核细胞趋化蛋白1和细胞间黏附分子1的表达

目的对人血管内皮细胞株(ECV304)的研究显示,软脂酸上调该细胞的单核细胞趋化蛋白1(MCP1)和细胞间黏附分子1(ICAM1)基因表达,而花生四烯酸能降低上述高表达。

自身免疫性肝炎和原发性胆汁性肝硬化患者检测可溶性细胞间黏附分子1的临床价值

目的探讨原发性胆汁性肝硬化(PBC)和自身免疫性肝炎(AIH)患者中检测可溶性细胞间黏附分子1(sICAM-1)的临床价值。方法选择2012年6月-2013年9月住院及门诊就诊的PBC患者61例,其中初发患者29例,缓解期患者21例,复发患者11例;AIH患者共59例,其中初发患者26例,缓解期患者20例,复发患者13例。健康对照50例。血清sICAM-1测定方法为双抗体夹心酶联免疫吸附法,采用生物化学酶法测定血清ALT、TBil。各组间比较采用方差分析,相关性采用Pearson相关分析。结果PBC患者中,初发组和复发组sICAM-1水平均明显高于缓解组和对照组(P均=0.000);初发组和复发组之间sICAM-1水平差异无统计学意义(P=0.484);缓解组sICAM-1水平高于对照组(P=0.000);AIH患者中,初发组和复发组sICAM-1水平均明显高于缓解组和对照组(P均=0.000);初发组和复发组之间sICAM-1水平差异无统计学意义(P=0.802);缓解组和对照组之间sICAM-1水平差异无统计学意义(P=0.281);PBC、AIH患者血清sICAM-1与ALT呈正相关(r=0.664,P=0.000;r=0.784,P=0.000);PBC、AIH患者血清sICAM-1与TBil呈正相关(r=0.715,P=0.000;r=0.580,P=0.000)。结论 sICAM-1可能参与PBC、AIH的免疫损伤机制,PBC、AIH患者血清sICAM-1水平升高程度与肝损害严重程度有密切关系,临床上动态观察其血清水平的变化,可望在病情活动评估、判断预后、指导治疗中起重要作用。

sICAM-1、sVCAM-1和P选择素检测对胰腺癌诊断和预后评估的价值

目的探讨血清可溶性细胞间黏附分子-1(sICAM-1)、可溶性血管内皮细胞黏附因-1(sVCAM-1)和P选择素检测对胰腺癌诊断和预后评估的临床价值。方法2007年10月-2008年6月收治的胰腺癌患者70例,包括胰头癌45例,胰体、胰尾癌25例;TNM分期Ⅰ-Ⅱ期34例,Ⅲ-Ⅳ期36例。采用酶联免疫法(ELISA)法测定患者手术前后血清sICAM-1、sVCAM-1和P选择素水平,并与30例胰腺良性病变患者进行比较。结果胰腺癌患者血清sICAM-1、sVCAM-1和P选择素水平明显高于胰腺良性病变患者(P<0.01);Ⅲ-Ⅳ期胰腺癌患者血清sICAM-1、sVCAM-1和P选择素水平明显高于I-Ⅱ期患者(P<0.05)。sICAM-1、sVCAM-1和P选择素检测的敏感度分别为81.4%、85.7%、84.3%,三者联合检测的敏感度为92.9%。行根治性手术组(39例)术后血清sI-CAM-1、sVCAM-1和P选择素水平均较术前显著降低(P<0.05),而姑息性手术组(31例)则无明显变化(P>0.05)。结论血清sI-CAM-1、sVCAM-1和P选择素水平是胰腺癌诊断和预后判断的敏感性指标,三者联合应用可提高胰腺癌早期诊断的敏感性。

细胞间黏附分子-1在实验性自身免疫性脑脊髓炎大鼠中表达的动态变化及作用

目的探讨细胞间黏附分子-1(ICAM-1)在实验性自身免疫性脑脊髓炎(EAE)大鼠中表达的动态变化及其作用。方法分别取免疫后第4、6、8、10、12、14、16、18、20天EAE大鼠脑和脊髓制成石蜡切片,行HE染色和ICAM-1半定量免疫组化分析。结果免疫后第8天ICAM-1表达即出现明显上调,早于临床症状的发生;随免疫后时间的延长,ICAM-1表达呈逐渐增高后缓慢下降的变化趋势,并且与EAE大鼠病情评分呈显著正相关(r=0.57,P=0.003)。结论ICAM-1的表达上调可能在EAE发病中具重要作用。

参附对大鼠肾缺血再灌注损伤NF-κB、细胞黏附分子-1、TNF-α表达的影响

目的:观察参附注射液(shenfu injection,SF)对大鼠肾缺血再灌注损伤细胞黏附分子-1(ICAM-1)、NF-κB、TNF-α表达的影响。方法:采用切除右肾,无创动脉夹夹闭左肾动脉45 min,再灌注2 h制作在体肾缺血再灌注损伤模型。36只SD大鼠随机分为缺血再灌注组、假手术对照组、参附预处理组(10 mL/kg),每组12只。免疫组化法检测肾组织中NF-κB、ICAM-1蛋白含量,酶联免疫吸附实验(ELISA)检测血清、肾组织中TNF-α的表达。结果:缺血再灌注组NF-κB、ICAM-1表达和TNF-α含量明显高于假手术对照组(P<0.01)。与缺血再灌注组相比,参附预处理组NF-κB、ICAM-1表达和TNF-α含量明显降低(P<0.01)。结论:参附通过抑制NF-κB的表达,从而下调其下游的TNF-α、ICAM-1的表达,发挥其肾脏保护作用。

脂多糖预处理对大鼠肝移植缺血再灌注期肝脏NF-κB活性和ICAM-1/LFA-1分子表达的影响

目的:探讨脂多糖(Lipopolysaccharide,LPS)预处理对大鼠肝移植缺血再灌注(Ischemia/Reperfusion,I/R)损伤中肝脏核因子-κB(Nuclearfactor-κB,NF-κB)活性和细胞间粘附分子-1/淋巴细胞功能相关抗原(Intercellular adhension molecule-1/Lymphocyte function associated antingen-1,ICAM-1/LFA-1)分子表达的影响及意义。方法:雄性SD大鼠,分为假手术组(Sham组)、原位肝移植组(OLT组)和原位肝移植+LPS预处理组(LPS组)。Sham组只开腹分离肝十二指肠韧带,OLT组和LPS组按两袖套法进行肝移植。Sham组于分离肝十二指肠韧带后0、60、180min、OLT组和LPS组于门静脉血流恢复后0、60、180min分别测定各时相点肝组织NF-κB活性、ICAM-1/LFA-1分子表达及血清ALT、AST水平。结果:再灌注后0、60、180min,OLT组与LPS组的NF-κB活性、ICAM-1/LFA-1分子表达均高于Sham组(P<0.01);再灌注后0min,OLT组与LPS组的NF-κB活性、ICAM-1/LFA-1分子表达和ALT、AST水平差异无统计学意义(P>0.05);再灌注60、180min,OLT组的NF-κB活性,ICAM-1/LFA-1分子表达,ALT、AST水平均明显高于LPS组(P<0.01)。结论:大鼠肝移植再灌注期内毒素信号转导通路的NF-κB活性增强,上调ICAM-1/LFA-1分子表达对移植肝造成损害;脂多糖预处理可有效抑制大鼠肝移植I/R中肝脏NF-κB活性、下调ICAM-1/LFA-1分子表达,对大鼠移植肝的缺血再灌注损伤有明显保护作用。