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.

Integrin binding peptides facilitate growth and interconnected vascular-like network formation of rat primary cortical vascular endothelial cells in vitro

Neovascularization and angiogenesis in the brain are important physiological processes for normal brain development and repair/regeneration following insults. Integrins are cell surface adhesion receptors mediating important function of cells such as survival, growth and development during tissue organization, differentiation and organogenesis. In this study, we used an integrin-binding array platform to identify the important types of integrins and their binding peptides that facilitate adhesion, growth, development, and vascular-like network formation of rat primary brain microvascular endothelial cells. Brain microvascular endothelial cells were isolated from rat brain on post-natal day 7. Cells were cultured in a custom-designed integrin array system containing short synthetic peptides binding to 16 types of integrins commonly expressed on cells in vertebrates. After 7 days of culture, the brain microvascular endothelial cells were processed for immunostaining with markers for endothelial cells including von Willibrand factor and platelet endothelial cell adhesion molecule. 5-Bromo-2′-dexoyuridine was added to the culture at 48 hours prior to fixation to assess cell proliferation. Among 16 integrins tested, we found that α5β1, αvβ5 and αvβ8 greatly promoted proliferation of endothelial cells in culture. To investigate the effect of integrin-binding peptides in promoting neovascularization and angiogenesis, the binding peptides to the above three types of integrins were immobilized to our custom-designed hydrogel in three-dimensional(3 D) culture of brain microvascular endothelial cells with the addition of vascular endothelial growth factor. Following a 7-day 3 D culture, the culture was fixed and processed for double labeling of phalloidin with von Willibrand factor or platelet endothelial cell adhesion molecule and assessed under confocal microscopy. In the 3 D culture in hydrogels conjugated with the integrin-binding peptide, brain microvascular endothelial cells formed interconnected vascular-like network with clearly discernable lumens, which is reminiscent of brain microvascular network in vivo. With the novel integrin-binding array system, we identified the specific types of integrins on brain microvascular endothelial cells that mediate cell adhesion and growth followed by functionalizing a 3 D hydrogel culture system using the binding peptides that specifically bind to the identified integrins, leading to robust growth and lumenized microvascular-like network formation of brain microvascular endothelial cells in 3 D culture. This technology can be used for in vitro and in vivo vascularization of transplants or brain lesions to promote brain tissue regeneration following neurological insults.

Antrodia Cinnamomea ameliorates neointimal formation by inhibiting infl ammatory cell infi ltration through downregulation of adhesion molecule expression in vitro and in vivo

The increased vascular infl ammation is a key event in the development of atherosclerotic lesions.Antrodia cinnamomea has been shown to promote anticancerogenic activity through decreasing infl ammation.However,the potential role of A.cinnamomea in cardiovascular diseases remains unexplored.Herein,using carotid arterial ligation models,we found that ethanol extract from A.cinnamomea(EEAC)signifi cantly inhibited neointimal hyperplasia in a dose-dependent manner,accompanied with the reduced expression of activated p65 and infl ammatory cytokines.We also show that EEAC ameliorated TNF-α-induced phosphorylation of p65 and pro-infl ammatory cytokine expression in both vascular smooth muscle cells(VSMCs)and macrophages in vitro.Mechanistically,EEAC suppressed expression levels of intercellular adhesion molecule-1(ICAM-1)and vascular cell adhesion molecule(VCAM-1)in VSMCs,which attenuates the ability of monocytes/macrophages adhesion to VSMCs.Furthermore,the expression level of these adhesion molecules and infi ltration of monocytes/macrophages were also decreased in neointimal VSMCs of arteries pretreated with EEAC.Altogether,our results reveal a novel function of A.cinnamomea in suppressing vascular infl ammation upon ligation injury during neointimal formation,likely through inhibition of infl ammatory cell infi ltration via downregulating the adhesion molecules in VSMCs.Thus,A.cinnamomea may offer a pharmacological therapy to slow down disease progression in patients with vascular injury.

Pingyangmycin-regulated Expressions of Adhesion Molecules in Human Venous Malformation Endothelial Cells

Pingyangmycin (bleomycin A5 hydrochloride,PYM) is one of the anti-neoplastic agents which have been commonly used to treat venous malformations.However,the underlying mechanism by which PYM treats venous malformations remains poorly understood.It was reported that venous endothelial cells could recruit neutrophils via adhesion molecules (E-selectin,ICAM-1,ICAM-3,VCAM-1) during the acute/chronic inflammation and subsequent histological fibrosis after sclerotherapy with PYM.This study explored if the expression of E-selectin,ICAM-1,ICAM-3 and VCAM-1 in human venous malformation endothelial cells could be affected by PYM.HVMECs were cultured from human venous malformation tissue.Expressions of E-selectin,ICAM-1,ICAM-3 and VCAM-1 on HVMECs in response to PYM were analyzed by cell ELISA.The relative levels of mRNA expression in the cells were semi-quantified.The results showed that PYM up-regulated the expressions of E-selectin,ICAM-3,VCAM-1 and ICAM-1 in both time-and concentration-dependent manner.Our findings suggested that PYM could induce the expression of adhesion molecules in HVMECs,which might be a possible mechanism by which sclerotherapy by intralesional injection of PYM treats venous malformations.

Inhibition of vascular adhesion protein-1 modifies hepatic steatosis in vitro and in vivo

BACKGROUND Non-alcoholic fatty liver disease(NAFLD)is associated with obesity,insulin resistance and dyslipidaemia and currently is estimated to affect up to a third of all individuals in developed countries.Current standard of care for patients varies according to disease stage,but includes lifestyle interventions common insulin sensitizers,antioxidants and lipid modifiers.However,to date specific therapies have shown little histological or fibrosis stage improvement in large clinical trials,and there is still no licensed therapy for NAFLD.Given the high prevalence,limited treatment options and significant screening costs for the general population,new treatments are urgently required.AIM To assess the potential for inhibition of the amine oxidase enzyme vascular adhesion protein-1(VAP-1)to modify hepatic lipid accumulation in NAFLD.METHODS We have used immunochemical and qPCR analysis to document expression of VAP-1 and key functional proteins and transporters across the NAFLD spectrum.We then utilised hepatocytes in culture and human precision cut liver slices in concert with selective enzyme activity inhibitors to test the effects of activating the semicarbazide-sensitive amine oxidase activity of VAP-1 on hepatic lipid uptake and triglyceride export.A murine model of NAFLD was also used to determine the consequences of VAP-1 knockout and gene expression arrays were used to quantify the effects of VAP-1 activity on key lipid modifying and proinflammatory gene expression.RESULTS We confirmed that increasing severity of NAFLD and progression to cirrhosis was associated with a significant increase in hepatocellular VAP-1 expression.Hepatocytes in vitro exposed to recombinant VAP-1 and its substrate methylamine showed increased lipid accumulation as determined by quantification of Oil Red O uptake.This was recapitulated using hydrogen peroxide,and lipid accumulation was accompanied by changes in expression of the lipid transporter molecules FABP3,FATP6,insulin receptor subunits and PPARα.Human liver tissue exposed to recombinant VAP-1 or substrates for endo/exogenous VAP-1 produced less triglyceride than untreated tissue and demonstrated an increase in steatosis.This response could be inhibited by using bromoethylamine to inhibit the SSAO activity of VAP-1,and mice deficient in VAP-1/AOC3 also demonstrated reduced steatosis on high fat diet.Exposure of human liver tissue to methylamine to activate VAP-1 resulted in increased expression of FABP2 and 4,FATP3-5,caveolin-1,VLDLR,PPARGC1 and genes associated with the inflammatory response.CONCLUSION Our data confirm that the elevations in hepatic VAP-1 expression reported in nonalcoholic steatohepatitis can contribute to steatosis,metabolic disturbance and inflammation.This suggests that targeting the semicarbazide sensitive amine oxidase capacity of VAP-1 may represent a useful adjunct to other therapeutic strategies in NAFLD.

Adhesion molecule and proinflammatory cytokine gene expression in hepatic sinusoidal endothelial cells following cecal ligation and puncture

INTRODUCTIONMultiple organ dysfunction syndrome (MODS) isthought to be a frequent consequence of sepsis[1-3].Despite substantial advances in our knowledge and understanding of the basic pathophysiologic mechanisms[4-7], in critically ill patients infections and sepsis are still associated with a high mortality[8,9].

Changes in serum cellular adhesion molecule and matrix metalloproteinase-9 levels in patients with cerebral infarction following hyperbaric oxygen therapy A case and intergroup control study

BACKGROUND： Animal studies have confirmed that hyperbaric oxygen （HBO） therapy can reduce matrix metalloproteinase activity and blood brain barrier permeability, thereby exhibiting neuroprotective effects. However, at present, consensus does not exist in terms of its clinical efficacy. OBJECTIVE： To validate the significance of changes in serum cellular adhesion molecule and MMP-9 levels in patients with cerebral infarction following HBO therapy. DESIGN, TIME AND SETTING： This randomized, controlled, neurobiochemical study was performed at the Department of Neurology, Affiliated Hospital of Qingdao University Medical College between December 2002 and March 2006. PARTICIPANTS： A total of 112 patients with acute cerebral infarction of internal carotid artery, comprising 64 males and 48 females, averaging （67 ±11） years, were recruited and randomized to a HBO group （n = 50） and a routine treatment group （n = 62）. An additional 30 gender- and age-matched normal subjects, consisting of 17 males and 13 females, averaging （63 ± 9） years, were enrolled as control subjects. METHODS： The routine treatment group received routine drug treatment and rehabilitation exercise. HBO treatment was additionally performed in the HBO group, once a day, for a total of 10 days. MAIN OUTCOME MEASURES： Serum levels of soluble intercellular adhesion molecule, soluble vascular cell adhesion molecule, soluble E-selectin, and matrix metalloproteinase-9 were detected by enzyme linked immunosorbent assay. RESULTS： Upon admission, serum levels of soluble intercellular adhesion molecule, soluble vascular cell adhesion molecule, soluble E-selectin, and matrix metalloproteinase-9 were significantly increased in patients with cerebral infarction, compared with control subjects （P 〈 0.01）. Following HBO and routine treatments, serum levels of the above-mentioned indices were significantly reduced in the HBO and routine treatment groups （P 〈 0.01）. Moreover, greater efficacy was observed in the HBO group, compared with the routine treatment group （P 〈 0.05 or P 〈 0.01）. CONCLUSION： Intergroup comparison and case-control results indicated that HBO noticeably reduced serum levels of soluble intercellular adhesion molecule, soluble vascular cell adhesion molecule, soluble E-selectin, and matrix metalloproteinase-9.

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 role of adhesion molecules in gastri c ulcer healing

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Circulating Adhesion Molecules in Patients with Keshan Disease and Their Relationship with Coxsackie B Virus Infection

This study determined the levels of serum soluble intercellular adhesion molecule-1 （sI-CAM-l） and soluble vascular cell adhesion molecular-1 （sVCAM-1） in patients with different types of Keshan disease （KD）, examined the relationship between Coxsackie B virus-specific IgM antibody （CBV-IgM） and slCAM-1 or sVCAM-1 in KD patients, and investigated the role of these adhesion molecules in the pathogenesis of KD and their clinical implications. The levels of serum slCAM-1, sVCAM-1 and CBV-IgM were measured by using enzyme-linked immunosorbent assay in 22 patients with chronic Keshan disease （CKD）, 27 with latent Keshan disease （LKD） and 28 healthy controis. The subjects in different groups were adjusted for sex and age. Echocardiography was adopted to determine left ventricular ejection fraction （LVEF） in 22 patients with CKD. The results showed that CKD patients had significantly higher levels of slCAM-1 and sVCAM-1 than LKD patients and healthy controls （P〈0.01 for all）. And there was significant difference in the levels of the 2 adhesion molecules between LKD patients and healthy controls （P〈0.05）. A negative correlation was found between LVEF and slCAM-1 or sVCAM-1 in CKD patients. The percentage of CBV-specific IgM positive individuals in KD patients was significantly higher than that of healthy controls. In CVB-specific IgM positive patients, the levels of serum slCAM-1 and sVCAM-1 were significantly greater than those in CBV-specific IgM negative counterpart. It was concluded that the increase in the levels of slCAM-1 and sVCAM-1 suggests the progression of inflammation in KD. slCAM-1 and sVCAM-1 can promote the development of myocardial pathology and lead to poor myocardial function. The increased serum slCAM-1 and sVCAM-1 in KD patients may be related to CBV infection.

Platelet-activating factor mediates hydrogen peroxide induced endothelial-leukocyte adhesion

The effects of hydrogen peroxide（H2O2）on endothelial-polymorphonuclear leuko-cyte（EC-PMN）adhesion and their mechanisms were studied in cultured bovine pulmonaryartery endothelial monolayers in vitro.H2O2 at various concentrations(10-3,10-2,10-1mol/Lrespectively)stimulated EC-dependent PMN adhesion,of which 10-2mol/L H2O2 was the mostpotent one,increasing adhesion to 2.3 times that of the control.Pretreatment of PMNs with SRI63-441,a platelet-activating factor（PAF）receptor antagonist,had no inhibition effect on H2O2induced EC-PMN adhesion.Pretreatment of ECs with SRI 63-441 before H2O2 exposure signifi-cantly decreased PMN adherence to ECs.Pretreatment of ECs with phospholipase A2 inhibitorp-bromophenacyl-bromide or calmodulin antagonist chlorpromazine and calcium ion chelate EG-TA obviously decreased H2O2 induced increment of EC-PMN adhesion.These results suggestthat H2O2 may activate ECs,causing the inflow of extracellular calcium or the release of calciumfrom intracellular deposits.Increased intracellar Ca2+may bind with calmodulin to activate phos-pholipase A2,thus initiating PAF synthesis and promoting EC-PMN adhesion.

Molecular and cellular changes in the post-traumatic spinal cord remodeling after autoinfusion of a genetically-enriched leucoconcentrate in a mini-pig model

Post-traumatic spinal cord remodeling includes both degenerating and regenerating processes,which affect the potency of the functional recovery after spinal cord injury(SCI).Gene therapy for spinal cord injury is proposed as a promising therapeutic strategy to induce positive changes in remodeling of the affected neural tissue.In our previous studies for delivering the therapeutic genes at the site of spinal cord injury,we developed a new approach using an autologous leucoconcentrate transduced ex vivo with chimeric adenoviruses(Ad5/35)carrying recombinant cDNA.In the present study,the efficacy of the intravenous infusion of an autologous genetically-enriched leucoconcentrate simultaneously producing recombinant vascular endothelial growth factor(VEGF),glial cell line-derived neurotrophic factor(GDNF),and neural cell adhesion molecule(NCAM)was evaluated with regard to the molecular and cellular changes in remodeling of the spinal cord tissue at the site of damage in a model of mini-pigs with moderate spinal cord injury.Experimental animals were randomly divided into two groups of 4 pigs each:the therapeutic(infused with the leucoconcentrate simultaneously transduced with a combination of the three chimeric adenoviral vectors Ad5/35‐VEGF165,Ad5/35‐GDNF,and Ad5/35‐NCAM1)and control groups(infused with intact leucoconcentrate).The morphometric and immunofluorescence analysis of the spinal cord regeneration in the rostral and caudal segments according to the epicenter of the injury in the treated animals compared to the control mini-pigs showed:(1)higher sparing of the grey matter and increased survivability of the spinal cord cells(lower number of Caspase-3-positive cells and decreased expression of Hsp27);(2)recovery of synaptophysin expression;(3)prevention of astrogliosis(lower area of glial fibrillary acidic protein-positive astrocytes and ionized calcium binding adaptor molecule 1-positive microglial cells);(4)higher growth rates of regeneratingβIII-tubulin-positive axons accompanied by a higher number of oligodendrocyte transcription factor 2-positive oligodendroglial cells in the lateral corticospinal tract region.These results revealed the efficacy of intravenous infusion of the autologous genetically-enriched leucoconcentrate producing recombinant VEGF,GDNF,and NCAM in the acute phase of spinal cord injury on the positive changes in the post-traumatic remodeling nervous tissue at the site of direct injury.Our data provide a solid platform for a new ex vivo gene therapy for spinal cord injury and will facilitate further translation of regenerative therapies in clinical neurology.

血清血管细胞黏附因子1和三叶因子3水平与晚期非小细胞肺癌化疗效果及预后的关系

目的研究血管细胞黏附因子1(VCAM1)、三叶因子3(TFF3)水平与晚期非小细胞肺癌(NSCLC)患者化疗效果及预后的关系。方法选取2019年2月至2021年2月江苏省肿瘤医院收治的112例接受铂类化疗初治的晚期NSCLC患者为观察组,另选取同期体检健康的70例受试者为对照组。检测受试者血清VCAM1、TFF3水平。根据化疗结束后的效果,将观察组患者分为化疗有效组和化疗无效组。随访1年,比较不同血清VCAM1、TFF3表达水平晚期NSCLC患者生存预后差异。采用多因素Cox回归模型分析影响晚期NSCLC患者生存预后的因素。结果观察组血清VCAM1、TFF3水平均高于对照组[(227±24)μg/L比(79±13)μg/L、(1.59±0.37)μg/L比(0.47±0.14)μg/L],差异均有统计学意义(均P<0.001)。晚期NSCLC患者血清VCAM1、TFF3水平与肿瘤分化程度及TNM分期有关(均P<0.05)。化疗无效组患者血清VCAM1、TFF3水平均高于化疗有效组,差异均有统计学意义(均P<0.001)。VCAM1高表达组1年总体生存率为26.9%(14/52),VCAM1低表达组为55.0%(33/60),组间比较差异有统计学意义(Log-rankχ^(2)=12.181,P<0.001)。TFF3高表达组1年总体生存率为27.8%(15/54),TFF3低表达组为55.2%(32/58),组间比较差异有统计学意义(Log-rankχ^(2)=14.146,P<0.001)。多因素Cox回归分析结果显示,肿瘤低分化程度、TNM分期Ⅳ期、VCAM1高表达、TFF3高表达是晚期NSCLC患者不良预后的独立危险因素(均P<0.001)。结论晚期NSCLC患者血清VCAM1、TFF3水平升高,二者与不良临床病理特征、化疗效果有关。

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。

创伤性肋骨骨折患者血清SP-D和sVCAM-1水平改变与其术后骨折愈合及短期预后的关系

目的探讨创伤性肋骨骨折患者血清人表面活性蛋白D(SP-D)和血管细胞黏附分子-1(sVCAM-1)水平改变与其术后骨折愈合及短期预后的关系。方法选取2020年1月至2021年12月于重庆医科大学附属巴南医院就诊并进行治疗的创伤性肋骨骨折患者102例作为研究对象,在对患者治疗8个月后,及时对患者的愈合情况进行分析并分组,其中不愈合组21例,愈合组81例。根据患者的肺挫伤情况,将其分为肺挫伤组19例,非肺挫伤组83例。分别比较愈合组及不愈合组、肺挫伤组及非肺挫伤组患者的血清SP-D和sVCAM-1水平,研究创伤性肋骨骨折患者血清SP-D和sVCAM-1水平改变与其术后骨折愈合及短期预后的关系。结果愈合组SP-D和sVCAM-1水平低于不愈合组(P<0.05),非肺挫伤组SP-D和sVCAM-1水平低于肺挫伤组(P<0.05),血清SP-D和sVCAM-1水平为患者术后骨折愈合及短期预后的独立危险因素。结论创伤性肋骨骨折患者血清SP-D和sVCAM-1水平改变与其术后骨折愈合及短期预后有关,可作为预后判定的重要参考。

大黄牡丹汤加味治疗溃疡性结肠炎(大肠湿热证)的临床观察

目的观察大黄牡丹汤加味治疗溃疡性结肠炎(UC)(大肠湿热证)的临床疗效。方法将98例患者根据随机数字表法分为中西医联合组与单纯西药组各49例。单纯西药组予美沙拉嗪缓释颗粒口服,中西医联合组加用大黄牡丹汤口服。比较两组治疗效果、疾病活动改善评分、临床症状和肠黏膜病变评分、血清细胞间黏附分子-1(ICAM-1)与血管细胞黏附分子(VCAM-1)水平。结果2周疗程结束后,中西医联合组总有效率为93.88%,显著高于单纯西药组的75.51%(P<0.05);两组改良Mayo评分显著降低,且中西医联合组降低更显著(P<0.05);两组主要症状与肠黏膜病变评分显著降低,且中西医联合组降低更显著(P<0.05);两组血清ICAM-1与VCAM-1水平显著下降,且中西医联合组下降更明显(P<0.05)。结论大黄牡丹汤加味治疗UC(大肠湿热证)患者的效果明显,能促进病情的控制,并下调血清ICAM-1与VCAM-1水平。

抗磷脂综合征患者血清sVCAM-1、HMGB1与NLRP3炎症小体信号通路与血栓事件的关系

目的探讨抗磷脂综合征(APS)患者血清可溶性血管细胞黏附分子-1(sVCAM-1)、高迁移率族蛋白B1(HMGB1)与NOD样受体P3(NLRP3)炎症小体信号通路和血栓事件的关系。方法选择2021年6月至2023年6月上海市浦东新区人民医院收治的124例APS患者作为APS组和67例健康志愿者作为对照组。检测所有受检者的血清sVCAM-1、HMGB1水平、外周血单个核细胞的NLRP3信使核糖核酸(mRNA)和下游炎症因子白细胞介素(IL)-1β、IL-18水平。采用Pearson相关性分析血清sVCAM-1、HMGB1水平与外周血单个核细胞的NLRP3 mRNA表达、IL-1β和IL-18水平的相关性。根据是否发生血栓事件将APS患者分为血栓组(n=32)和非血栓组(n=90)。采用多因素Logistic回归分析APS患者发生血栓事件的影响因素。采用受试者工作特征曲线(ROC)分析sVCAM-1、HMGB1预测APS患者发生血栓事件的价值。结果APS组患者的血清sVCAM-1、HMGB1、IL-1β和IL-18水平以及外周血单个核细胞的NLRP3 mRNA分别为(806.35±204.75)μg/L、(125.42±24.57)μg/L、(13.62±3.09)pg/mL、(16.24±3.72)pg/mL、1.62±0.42,明显高于对照组的(395.12±77.24)μg/L、(35.01±10.30)μg/L、(3.15±0.67)pg/mL、(4.02±1.13)pg/mL、0.85±0.23,差异均有统计学意义(P<0.05);经Pearson相关性分析结果显示,APS组患者的血清sVCAM-1、HMGB1水平与外周血单个核细胞的NLRP3 mRNA以及血清IL-1β和IL-18水平均呈正相关(P<0.05);血栓组患者的血清sVCAM-1、HMGB1水平分别为(915.35±70.28)μg/L、(136.42±10.17)μg/L,明显高于非血栓组的(767.59±61.43)μg/L、(121.51±15.03)μg/L,差异均有统计学意义(P<0.05);经多因素Logistic回归分析结果显示,3个抗体阳性、高水平sVCAM-1、HMGB1是APS患者发生血栓事件的危险因素(P<0.05);经ROC分析结果显示,血清sVCAM-1联合HMGB预测APS患者血栓事件的曲线下面积(AUC)为0.885,高于单独预测(P<0.05)。结论APS患者血清sVCAM-1、HMGB1水平均增高,且与NLRP3及其下游炎症因子水平增加、血栓事件发生有关,NLRP3炎症小体信号通路的激活可能进一步促进血栓形成。