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.

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.

Effects of TCMP-1 on the changes of platelet endothelial cell adhesion molecule-1 expression in acute edematous pancreatitis

BACKGROUND: Traditional Chinese medicine is a potent agent in the management of clinical and experimental acute pancreatitis (AP), but the molecular mechanism of its the- rapeutic action is unclear. Numerous experimental and clinical studies have shown that platelet endothelial cell ad- hesion molecule-1 (PECAM-1) is pivotal to leukocyte re- cruitment, which results in microcirculatory injury during inflammation, but its role in acute pancreatitis is poorly un- derstood. We investigated the effects of a compound of tra- ditional Chinese medicine pancreatitis-1 (TCMP-1) on the changes of platelet endothelial cell adhesion molecule-1 (PECAM-1) expression on polymorphonuclear leukocytes (PMNs) in acute edematous pancreatitis (AEP). METHODS: The model of acute pancreatitis was estab- lished by subcutaneous injection of caerulein, and TCMP-1 treated groups were given TCMP-1 by catheterization from mouth to stomach (20 ml/kg) immediately after first time subcutaneous injection of caerulein. The changes of expres- sion of PECAM-1 on leukocytes from the blood of the splenic vein and inferior vena cava were determined by flow cytometry. RESULTS: In the AEP group, expression of PECAM-1 on PMNs was not significantly different between pancreatic microcirculation and systemic circulation at AEP2h and AEP4h time point. Then from AEP4h time point to AEP8h time point, expression of PECAM-1 was up-regulated in systemic circulation while it was down-regulated in pancre- atic microcirculation and was significantly different be- tween pancreatic microcirculation and systemic circulation at AEP8h time point (P<0.05). In the TCMP-1 treated group, compared with the AEP group, expression of PE-CAM-1 on PMNs decreased in different levels between pan- creatic microcirculation and systemic circulation and was of significant difference at AEP8h time point (P <0.05). CONCLUSION: Inhibition of PECAM-1 expression on PMNs may prevent PMNs from transmigration through the endo- thelium and may be one of the treatment mechanisms of TCMP-1 decoction on AEP.

Differences in platelet endothelial cell adhesion molecule-1 expression between peripheral circulation and pancreatic microcirculation in cerulein-induced acute edematous pancreatitis

AIM: To investigate the changes of platelet endothelial cell adhesion molecule-1 (PECAM-1) expression on polymorphonuclear leukocytes (PMNs) in peripheral circulation and pancreatic microcirculation in cerulein-induced acute edematous pancreatitis (AEP).METHODS: Fifty Wistar rats were randomly divided into control group (n=10) and AEP group (n=40). A model of AEP was established by subcutaneous injection of cerulein 5.5 and 7.5 μg/kg at 0 and 1 h after the beginning of experiment respectively. PECAM-1 expression on PMNs from splenic vein and inferior vena cava was determined by RT-PCR at mRNA level and determined by flow cytometry at protein level.RESULTS: In experimental rats, an increased PECAM-1mRNA expression was seen from 4 to 8 h of AEP in peripheral circulation (0.77±0.25%, 0.76±0.28%, 0.89±0.30%,1.00±0.21% ), while in pancreatic microcirculation,expression decreased from 2 h and reached the lowest level at 6 h of AEP (0.78±0.29%, 0.75±0.26%, 0.62±0.28%,0.66±0.20%). There were significant differences at 8-h time point of AEP between peripheral circulation and pancreatic microcirculation (1.00±0.21% vs0.66±0.20%, P＜0.05).Meanwhile,the difference at protein level was also found.CONCLUSION: A reverse expression of PECAM-1 on PMNs was found between peripheral circulation and pancreatic microcirculation, suggesting that inhibition of PECAM-1expression may improve the pathological change of AEP.

The relationship between platelet endothelial cell adhesion molecule-1 and paraquat-induced lung injury in rabbits

BACKGROUND:Platelet endothelial cell adhesion molecule-1(PECAM-1),also known as CD31,is mainly distributed in vascular endothelial cells.Studies have shown that PECAM-1 is a very significant indicator of angiogenesis,and has been used as an indicator for vascular endothelial cells.The present study aimed to explore the relationship between the expression of PECAM-1 and the degree of acute lung injury(ALI) and fibrosis in paraquat(PQ) induced lung injury in rabbits.METHODS:Thirty-six adult New Zealand rabbits were randomly divided into three groups(12rabbits in each group) according to PQ dosage:8 mg/kg(group A),16 mg/kg(group B),and 32 mg/kg(group C).After PQ infusion,the rabbits were monitored for 7 days and then euthanized.The lungs were removed for histological evaluation.Masson staining was used to determine the degree of lung fibrosis(LF),and semi-quantitative immune-histochemistry analysis to determine the expression of PECAM-1.Pearson's product-moment correlation analysis was performed to evaluate the relationship between the expression of PECAM-1 and the extent of lung injuries expressed by ALI score and degree of LF.RESULTS:Rabbits in the three groups showed apparent poisoning.The rabbits survived longer in group A than in groups B and C(6.47±0.99 days vs.6.09±1.04 days vs.4.77±2.04 days)(P<0.05).ALI score was lower in group A than in groups B and C(8.33±1.03 vs.9.83±1.17 vs.11.50±1.38)(P<0.05),and there was statistically significant difference between group B and group C(P=0.03).LF was slighter in group A than in groups B and C(31.09%±2.05%vs.34.37%±1.62%vs.36.54%±0.44%)(P<0.05),and there was statistically significant difference between group B and group C(P=0.026).The PEACAM-1 expression was higher in group A than in groups B and C(20.31%±0.70%vs.19.34%±0.68%vs.18.37%±0.46%)(P<0.05),and there was statistically significant difference between group B and group C(P=0.017).Pearson's correlation analysis showed that the expression of PECAM-1 was negatively correlated to both ALI score(Coe=-0.732,P=0.001)and degree of LF(Coe=-0.779,P<0.001).CONCLUSIONS:The PECAM-1 expression significantly decreases in New Zealand rabbits after PQ poisoning,and the decrease is dose-dependent.The PECAM-1 expression is negatively correlated with ALI score and LF,showing a significant role in the development of lung injuries induced by PQ.

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.

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.

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].

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.

肿瘤组织微小RNA-542-3p、血管细胞黏附分子-1表达特征与脑胶质瘤术后复发的关系及预测价值

目的:探讨肿瘤组织中微小RNA-542-3p(miR-542-3p)、血管细胞黏附分子-1(VCAM-1)表达与脑胶质瘤手术后复发的关系及其预测价值。方法:选取实施手术治疗的脑胶质瘤患者91例进行临床研究,其中43例患者于术后1年出现术后复发(复发组)、48例患者手术后1年检查未出现复发病灶(非复发组),对比两组第一次手术后病灶组织标本中的miR-542-3p、VCAM-1蛋白表达差异,并分析miR-542-3p、VCAM-1蛋白表达与胶质瘤术后复发的关系及其预测复发的价值。结果:复发组患者脑胶质瘤组织中miR-542-3p表达水平低于非复发组,复发组患者脑胶质瘤组织中VCAM-1蛋白阳性表达率高于非复发组,差异具有统计学意义(均P<0.05);复发组患者脑胶质瘤组织病理学分级≥Ⅲ级患者占比、低分化患者占比、非全切手术方式患者占比、肿瘤浸润率均高于非复发组,复发组患者术后放化疗患者占比低于非复发组,差异具有统计学意义(均P<0.05)。miR-542-3p表达降低、VCAM-1蛋白阳性表达、手术范围非全切是脑胶质瘤手术后复发的独立危险因素(均P<0.05);miR-542-3p表达、VCAM-1蛋白预测脑胶质瘤手术后复发的曲线下面积AUC值分别为0.784(95%CI:0.690~0.877)、0.725(95%CI:0.621~0.829)。结论:脑胶质瘤组织中miR-542-3p表达、VCAM-1蛋白表达与肿瘤手术后复发有密切关系,用于临床预测有一定的参考价值。

血管介入栓塞术治疗动脉瘤性蛛网膜下腔出血疗效及对患者血清高迁移率族蛋白B1、血清可溶性细胞间黏附因子-1、可溶性血管细胞黏附因子-1的影响

目的:探讨血管介入栓塞术治疗动脉瘤性蛛网膜下腔出血(aSAH)的疗效及对血清高迁移率族蛋白B1(HMGB1)、血清可溶性细胞间黏附因子-1(sICAM-1)、可溶性血管细胞黏附因子-1(sVCAM-1)的影响。方法:选择92例aSAH患者为研究目标,根据手术方法不同分为对照组(颅内动脉瘤夹闭术治疗)46例,观察组(血管介入栓塞术治疗)46例,比较两组手术前后免疫功能及sICAM-1、sVCAM-1、HMGB1水平变化,记录手术时间、并发症发生率、住院时间,并评估预后情况。结果:观察组手术时间、住院时间分别为(92.03±14.97)min、(18.73±4.41)d均短于对照组的手术时间(147.92±34.21)min,术后住院时间(23.35±4.15)d(均P<0.05);术后观察组免疫功能高于对照组(P<0.05);观察组术后HMGB1、sICAM-1、sVCAM-1水平低于对照组(均P<0.05);对照组不良反应总发生率高于观察组(P<0.05);对照组知期预后良好率低于观察组(P<0.05)。结论:血管介入栓塞术治疗aSAH手术耗时短、脑血管痉挛发生率低、免疫状态影响小,并可明降低血清HMGB1、sICAM-1、sVCAM-1水平。

老年脑梗死患者血清可溶性细胞间黏附分子、视锥蛋白样蛋白1水平与血管性痴呆的关系研究

目的 分析老年脑梗死患者血清可溶性细胞间黏附分子(sICAM-1)、视锥蛋白样蛋白1(VILIP-1)水平与血管性痴呆(VD)的关系。方法 选取2021年3月至2023年3月河南省洛阳正骨医院收治的180例老年脑梗死患者,根据患者随访6个月内是否发生VD分为VD组和非VD组。比较两组一般资料,血清sICAM-1、VILIP-1水平及简易精神状态量表(MMSE)评分;分析血清sICAM-1、VILIP-1水平与MMSE相关性,评估血清sICAM-1、VILIP-1水平对VD预测价值。结果 VD组血清sICAM-1、VILIP-1水平高于非VD组,MMSE评分低于非VD组(P<0.05);血清sICAM-1、VILIP-1水平与MMSE均呈负相关(P<0.05);血清sICAM-1、VILIP-1水平对VD预测及联合预测的AUC值依次为0.721、0.892、0.919。结论 血清sICAM-1、VILIP-1水平与脑梗死患者发生VD密切相关,监测这些指标有助于指导临床预防VD的发生和早期干预。

突发性耳聋患者血清VCAM-1、ENA-78、MMP-2水平变化及检测意义

目的:探讨突发性耳聋患者血清血管细胞黏附分子-1(VCAM-1)、上皮中性粒细胞活化肽-78(ENA-78)、基质金属蛋白酶-2(MMP-2)水平变化及检测意义。方法:选取接受治疗的突发性耳聋患者136例为观察组,另选取同期体检健康者136例为对照组。采用ELISA法测定血清VCAM-1、ENA-78、MMP-2水平。根据听力损失程度将患者分为轻度组(46例)、中度组(51例)和重度组(39例)。根据治疗效果将患者分为疗效良好组(82例)和疗效不良组(54例)。比较观察组和对照组血清VCAM-1、ENA-78、MMP-2水平。比较不同听力损失程度及治疗效果患者血清VCAM-1、ENA-78、MMP-2水平。绘制受试者工作特征(ROC)曲线分析血清VCAM-1、ENA-78、MMP-2对突发性耳聋患者疗效不良的预测价值。结果:观察组血清VCAM-1、ENA-78、MMP-2水平高于对照组(均P<0.05)。与轻度组比较,中度和重度组血清VCAM-1、ENA-78、MMP-2水平逐渐升高(均P<0.05)。疗效良好组和疗效不良组患者临床资料比较差异无统计学意义(均P>0.05)。与疗效良好组比较,疗效不良组患者血清VCAM-1、ENA-78、MMP-2水平升高(均P<0.05)。血清VCAM-1、ENA-78、MMP-2三者联合预测突发性耳聋患者疗效不良的AUC高于血清单独指标预测的AUC(均P<0.05)。结论:突发性耳聋患者血清VCAM-1、ENA-78、MMP-2水平升高,与听力损失程度有关,三者联合对突发性耳聋患者治疗效果的预测价值较高。

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.

血清SIRT1、sICAM-1及PD-L1联合检测对难治性弥漫性大B细胞淋巴瘤患者预后的评估效能

目的探讨血清沉默信息调节因子1(SIRT1)、可溶性细胞间黏附分子-1(sICAM-1)及细胞程序性死亡-配体1(PD-L1)联合检测对难治性弥漫性大B细胞淋巴瘤(DLBCL)患者预后的评估效能。方法选取2022年1月至2023年10月在郑州大学第一附属医院诊治的84例难治DLBCL患者作为研究对象,根据治疗后1个月的疾病状态将患者分为预后良好组(57例)和预后不良组(27例),收集患者的一般临床资料;采用酶联免疫吸附法(ELISA)检测患者血清SIRT1、sICAM-1及PD-L1水平;分析血清SIRT1、sICAM-1及PD-L1水平与患者临床特征、治疗效果及预后的关系;采用多因素logistic回归分析,筛选出患者预后不良的影响因素。绘制受试者工作特征(ROC)曲线,计算曲线下面积(AUC),评价血清SIRT1、sICAM-1及PD-L1水平对难治DLBCL患者预后的预测能力。结果预后不良组血清SIRT1、sICAM-1及PD-L1水平均高于预后良好组(P<0.05)。多因素logistic回归分析显示,血清SIRT1、sICAM-1及PD-L1水平是影响难治性DLBCL患者预后不良的独立危险因素(P<0.05);ROC结果显示,血清SIRT1、sICAM-1及PD-L1单独及三者联合预测难治性DLBCL患者预后不良的AUC分别为0.851、0.843、0.924、0.980,且三者联合的预测价值高于单独预测(P<0.05)。结论血清SIRT1、sICAM-1及PD-L1水平可作为难治DLBCL患者预后评估的重要指标,且三者联合检测的效能优于单项检测,对指导临床治疗及监测疾病进展有重要意义。

冠心病患者血清VCAM-1、miR-145、Gal-3、SFRP5水平变化

目的探讨冠心病患者血清血管细胞黏附分子-1(VCAM-1)、miR-145、半乳糖凝集素-3(Gal-3)、分泌型卷曲蛋白5(SFRP5)水平变化及意义。方法选取冠心病患者80例为冠心病组,另收集健康志愿者40名为健康对照组。采集清晨空腹肘静脉血,酶联免疫吸附法测定血清VCAM-1、Gal-3、SFRP5浓度;RT-PCR检测血清miR-145表达水平。根据冠脉造影检查诊断的病变支数分为单支病变、双支病变、多支病变。收集两组受试者人口学特征及冠心病患者实验室指标;进行1 a随访,记录不良预后发生情况(病情加重再入院、死亡)。结果冠心病组患者血清VCAM-1、Gal-3水平明显高于健康对照组,miR-145、SFRP5水平明显低于健康对照组(均P<0.01)。急性心肌梗死组患者血清VCAM-1、Gal-3水平明显高于不稳定型心绞痛组、稳定型心绞痛组患者,血清miR-145、SFRP5水平明显低于不稳定型心绞痛组、稳定型心绞痛组患者(均P<0.05)。多支病变患者血清VCAM-1、Gal-3水平明显高于双支病变和单支病变患者,血清miR-145、SFRP5水平明显低于双支病变和单支病变患者(均P<0.05)。预后不良组患者血清VCAM-1、Gal-3水平明显高于预后良好组患者,miR-145、SFRP5水平明显低于预后良好组患者(均P<0.01)。VCAM-1、miR-145、Gal-3、SFRP5水平是冠心病患者预后的独立影响因素;ROC曲线分析显示,血清VCAM-1、miR-145、Gal-3、SFRP5水平联合检测对冠心病患者预后具有较高的预测价值(AUC=0.928)。结论冠心病患者血清VCAM-1、Gal-3水平高表达,miR-145、SFRP5水平低表达,且与冠心病分类、冠脉病变支数密切相关,联合检测对预后具有较高的预测价值。