目的：研究血清可溶性CD40配体（sCD40L）和白细胞介素18（IL-18）水平与脑梗死的关系。方法：选择2012年5月~2014年12月于我院就诊的脑梗死患者70例纳入脑梗死组,同一时间段内在我院体检中心体检的70例健康志愿者纳入研究的健康组,分...目的：研究血清可溶性CD40配体（sCD40L）和白细胞介素18（IL-18）水平与脑梗死的关系。方法：选择2012年5月~2014年12月于我院就诊的脑梗死患者70例纳入脑梗死组,同一时间段内在我院体检中心体检的70例健康志愿者纳入研究的健康组,分离血清并测定sCD40L、IL-18、细胞黏附分子1（ICAM-1）、血管细胞黏附分子1（VCAM-1）、CD11b、CD18、基质金属蛋白酶（MMP）10、解聚素-金属蛋白酶17（ADAM17）、ADAMTS12的含量,分离外周血单个核细胞并测定CD40、CD40L、NLRP3、凋亡相关点样蛋白（apoptotic speck-like protein containing a caspase recruitment domain,ASC）、Caspase-1的含量。结果：脑梗死组患者血清中sCD40L、IL-18、ICAM-1、VCAM-1、CD11b、CD18、MMP10、ADAM17、ADAMTS12的含量以及外周血中CD40、CD40L、NLRP3、ASC、Caspase-1的表达量显著高于健康组（P〈0.05）;脑梗死患者的神经功能缺损越严重,血清中sCD40L、IL-18的含量以及外周血中CD40、CD40L、NLRP3、ASC、Caspase-1的表达量越高（P〈0.05）;sCD40L、IL-18高水平组脑梗死患者血清中ICAM-1、VCAM-1、CD11b、CD18、MMP10、ADAM17、ADAMTS-12的含量显著高于低水平组（P〈0.05）。结论：血清可溶性CD40配体和白细胞介素18水平升高与脑梗死的发生以及病情严重程度相关。展开更多
目的探讨ABCD3-I评分结合血清可溶性CD40配体(sCD40L)和血浆纤维蛋白原(Fib)检测对短暂性脑缺血发作(TIA)患者90d内发生脑梗死的预测价值。方法连续选取首次发病的TIA患者178例,随访90d,将发展为脑梗死的27例患者作为脑梗死组,未发展为...目的探讨ABCD3-I评分结合血清可溶性CD40配体(sCD40L)和血浆纤维蛋白原(Fib)检测对短暂性脑缺血发作(TIA)患者90d内发生脑梗死的预测价值。方法连续选取首次发病的TIA患者178例,随访90d,将发展为脑梗死的27例患者作为脑梗死组,未发展为脑梗死的151例患者作为对照组。入选者均进行ABCD3-I评分,采用酶联免疫吸附法检测sCD40L和Fib水平,绘制ROC曲线分析相关指标的预测价值。结果与对照组比较,脑梗死组ABCD3-I评分和sCD40L及Fib水平明显升高[(6.17±1.04)分vs (5.43±1.32)分,P=0.009;(222.00±28.75)μg/L vs (187.80±35.47)μg/L,P=0.014;(4.01±1.52)g/L vs (3.55±1.26)g/L,P=0.012]。ROC曲线分析显示,ABCD3-I评分联合sCD40L、ABCD3-I评分联合Fib、ABCD3-I评分联合sCD40L和Fib预测TIA患者90d内发展为脑梗死的曲线下面积分别为0.656(95%CI:0.586~0.732,P=0.001)、0.680(95%CI:0.615~0.745,P=0.000)和0.714(95%CI:0.654~0.774,P=0.000),均有预测价值,且ABCD3-I评分联合sCD40L和Fib的预测价值较前两者更高,其敏感性为90.1%,特异性为88.2%。结论 ABCD3-I评分联合sCD40L和Fib检测可进一步提高预测TIA患者90d内发展为脑梗死的准确率,且预测价值较高。展开更多
AIM: To construct a recombinant murine CD40 ligand (mCD40L) eukaryotic expression vector for gene therapy and target therapy of hepatocellular carcinoma (HCC).METHODS: mCD40L cDNA was synthesized by RT-PCR with the sp...AIM: To construct a recombinant murine CD40 ligand (mCD40L) eukaryotic expression vector for gene therapy and target therapy of hepatocellular carcinoma (HCC).METHODS: mCD40L cDNA was synthesized by RT-PCR with the specific primers and directly cloned into T vector to generate middle recombinant. After digestion with restriction endonuclease, the target fragment was subcloned into the multi-clone sites of the eukaryotic vector. The constructed vector was verified by enzyme digestion and sequencing,and the product expressed was detected by RT-PCR and immunofluorescence methods.RESULTS: The full-length mCD40L-cDNA was successfully cloned into the eukaryotic vector through electrophoresis,and mCD40L gene was integrated into the genome of infected H22 cells by RT-PCR. Murine CD40L antigen molecule was observed in the plasma of mCD40L-H22 by indirect immuno-fluorescence staining.CONCLUSION: The recombined mCD40L eukaryotic expression vector can be expressed in H22 cell line. It providesexperimental data for gene therapy and target therapy ofhepatocellular carcinoma.展开更多
To observe the expression of CD40/CD40L on peripheral blood mononuclear cells （PBMC） in patients with eondyloma aeuminatum （CA）, flow eytometry was employed to examine the expression of CD40 and CD40L on PMBC in 3...To observe the expression of CD40/CD40L on peripheral blood mononuclear cells （PBMC） in patients with eondyloma aeuminatum （CA）, flow eytometry was employed to examine the expression of CD40 and CD40L on PMBC in 36 patients with CA and 20 healthy controls. Our results showed that mean level of CD40 expression in CA patients was significantly lower than that in the controls （6.58 %±2.74 % vs 14.81 %±6.12 %, t=5. 703, P〈0.05）; the average level of CD40L in CA patients was also significantly lower than that in the controls （0.73 % ±0.54 % vs 2.67 %±2.43 %, t=3. 532, P〈0.05）. Our resutls suggest that the reduced costimulatory interaction of CD40 and CD40L in CA patients may be one of the important factors responsible for the low cellular immunity.展开更多
BACKGROUND： Infection-induced thrombocytopenia （TCP） is an independent risk factor for death of patients with sepsis, but its mechanism is unknown. This study aimed to explore the underlying mechanism of TCP based ...BACKGROUND： Infection-induced thrombocytopenia （TCP） is an independent risk factor for death of patients with sepsis, but its mechanism is unknown. This study aimed to explore the underlying mechanism of TCP based on the relationship between TLR4 expression and platelet activation in septic patients. METHODS： A total of 64 patients with sepsis were prospectively studied. Platelet count （PC）, mean platelet volume （MPV）, platelet distribution width （PDW）, platelet TLR4 expression, platelet PAC-1 expression, sCD40L and TNF-a concentrations were compared between the healthy control group （15 volunteers） and sepsis group （64 patients） at admission and on the 3, 5, and 9 days after admission. The changes of MPV and PDW in the TCP and non-TCP subgroups of sepsis before and after treatment were recorded. Prognostic index was analyzed. RESULTS：PC was lower in the sepsis group （P=0.006）, and MPV and PDW were higher in the sepsis group than those in the healthy control group （P=0.046, P=0.001）. Platelet TLR4 and PAC-1 expressions, and sCD40L and TNF-a levels increased more significantly in the sepsis group （P〈0.001）. PAC-1 expression and TNF-a level were higher in the TCP group than in the non-TCP group before and after treatment （P=0.023, P=0.011）. sCD40L concentration and platelet TLR4 expression were significantly higher in the treated TCP group than in the non-TCP group （P=0.047, P=0.001）. Compared to the non-TCP group, the rate of bleeding was higher （P=0.024） and the length of ICU stay was longer （P=0.013）. The APACHE II score and the 28-day mortality were higher in the TCP group （P〈0.01, P=0.048）. CONCLUSIONS：The elevation of platelet TLR4 expression in sepsis along with platelet activation is closely related to the incidence of thrombocytopenia. The occurrence of TCP is a sign of poor prognosis in sepsis patients.展开更多
Objectives To investigate the change and clinical significance of clopidogrel on platelet membrane CD40L in coronary artery disease patients before and after percutaneous coronary intervention(PCI). Methods 30 cases w...Objectives To investigate the change and clinical significance of clopidogrel on platelet membrane CD40L in coronary artery disease patients before and after percutaneous coronary intervention(PCI). Methods 30 cases who were diagnosis coronary artery diseases(CAD) by coronary angiography, mean age 56±9 years old. All the patients who had no antiplatelet aggregation contraindication, were treated with standard anti angina pectoris drugs. Before PCI, all the patients took clopidogrel 75 mg per day. Activated platelet membrane CD40L express rate was measured by flow cytometry before and after PCI 6 hours. Results Activated platelet membrane CD40L express rate were 3.73±2.15 and 2.46±0.90, respectively in 30 patients before and after PCI 6 hours. Activated platelet membrane CD40L express rate was significantly decrease after PCI 6 hours than that before PCI(P<0.01). Conclusions Clopidogrel has significance effect on platelet membrane CD40L in coronary artery disease patients undergoing PCI. Clopidogrel can suppression platelet activation and prevent thromboembolism event occurrence.展开更多
BACKGROUND Colorectal cancer(CRC)is often associated with elevated platelet count(>400×10^(9)/L),known as thrombocytosis.The role of CD40 ligand(CD40L),a member of the tumor necrosis factor family,is controver...BACKGROUND Colorectal cancer(CRC)is often associated with elevated platelet count(>400×10^(9)/L),known as thrombocytosis.The role of CD40 ligand(CD40L),a member of the tumor necrosis factor family,is controversial in CRC.Circulating CD40L is higher in CRC,but its relationship with disease staging and local and distant metastasis is not clear.Although most of the circulating CD40L is produced by platelets,no previous study investigated its relationship with CRC-related thrombocytosis.AIM To investigate the role of CD40L to predict the outcome of CRC and its relation to thrombocytosis.METHODS A total of 106 CRC patients and 50 age and sex-matched control subjects were enrolled for the study.Anamnestic data including comorbidities and histopathological data were collected.Laboratory measurements were performed at the time of CRC diagnosis and 1.5 mo and at least 6 mo after the surgical removal of the tumor.Plasma CD40L and thrombopoietin were measured via enzyme-linked immunosorbent assay,while plasma interleukin-6 was measured via electrochemiluminescence immunoassay.Patient follow-ups were terminated on January 31,2021.RESULTS Plasma CD40L of CRC patients was tendentiously higher,while platelet count(P=0.0479),interleukin-6(P=0.0002),and thrombopoietin(P=0.0024)levels were significantly higher as opposed to the control subjects.Twelve of the 106 CRC patients(11.3%)had thrombocytosis.Significantly higher CD40L was found in the presence of distant metastases(P=0.0055)and/or thrombocytosis(P=0.0294).A connection was found between CD40L and platelet count(P=0.0045),interleukin-6(P=0.0130),and thrombocytosis(P=0.0155).CD40L was constant with the course of CRC,and all baseline differences persisted throughout the whole study.Both pre-and postoperative elevated platelet count,CD40L,and interleukin-6 level were associated with poor overall and disease-specific survival of patients.The negative effect of CD40L and interleukin-6 on patient survival remained even after the stratification by thrombocytosis.CONCLUSION CD40L levels of CRC patients do not change with the course of the disease.The CD40L level is strongly correlated with platelet count,interleukin-6,thrombocytosis,and the presence of distant metastases.展开更多
CD40L-CD40 interaction is central to the control of thymusdependent humoral immunity and cell mediated immune responses. CD40, a member of the tumor necrosis factor receptor （TNF- R） family, has been found on the su...CD40L-CD40 interaction is central to the control of thymusdependent humoral immunity and cell mediated immune responses. CD40, a member of the tumor necrosis factor receptor （TNF- R） family, has been found on the surface of B lymphocytes, monocytes, hematopoietic progenitors, dendritic cells （DCs）, endothelial cells, epithelial cells and so on. Its natural ligand （CD40 ligand, CD40L）, CD154, a member of the tumor necrosis factor （TNF） family, is mainly expressed on activated CD4^＋ T lymphocytes. A direct growth-inhibitory effect can be found when ligated CD40 is on human breast, ovarian, cervical, bladder, non-small cell lung, and squamous epithelial carcinoma cells. This effect is related to the induction of cell cycle blockage and/or apoptosis. CD40L induces phenotypic and functional maturation of DCs, and can increase tumor immunogenicity through up-regulation of costimulatory molecular expression and cytokine production by epithelial cancer cells. As a result, CD40L can enhance tumor rejection immune responses. Furthermore, by means of a “bystander effect”, even CD40-negative tumor subsets can be eliminated by activated tumor-reactive cytotoxic T lymphocytes（CTL）. This review summarizes recent findings on CD40L recombinant protein and gene therapy-based tumor treatment approaches.展开更多
Objectives To investigate the inhibitory effect of clopidogrel on release of soluble CD40 ligand （sCD40L） by ADP-activated platelet in patients with non-ST-segment elevation acute coronary syndromes（NSTEACS）. Meth...Objectives To investigate the inhibitory effect of clopidogrel on release of soluble CD40 ligand （sCD40L） by ADP-activated platelet in patients with non-ST-segment elevation acute coronary syndromes（NSTEACS）. Methods Forty-two patients with NSTEACS were treated with clopidogrel for 6 - 8 days. In order to obtain platelet rich plasma （PRP） samples, the venous blood was drawn before and after treatment, respectively. The platelets were activated by adenosine diphosphate （ADP） , thus releasing sCD40L, sCD40L levels were determined by en- zyme-linked immunosorbent assay （ELISA） at different time of the reaction. Results Plasma sCD40L concentration before treatment was （0. 199 ± 0. 155 ） ng/mL, and （0. 190 ± 0. 176） ng/mL after treatment （ P 〉 0.05 ）. Before treatment the PRP sCD40L level at 20-minute of platelet activation was （4.34 ± 2.51 ） ng/mL, and decreased to （2.79 ±1.93 ） ng/mL after treatment （ P 〈 0. 001 ）. The corresponding level at 40 - minute of platelet activation was （5.29 ± 3. 13 ） ng/mL before treatment and （ 2.87 ± 1.59 ） ng/mL after treatment（ P 〈 0. 001 ）. Conclusions Short-term clopidogrel administration might inhibit the release of sCD40L by ADP-activated platelet in patients with NSTEACS, suggesting that, in addition to its antiplatelet potency, clopidogrel may still have an anti-inflammatory effect.展开更多
To investigate clinical implications of expression of CD40L in monocytes and changes in serum soluble CD40L in patients with acute coronary syndromes (ACS) Methods Sixteen control and 56 patients, including 24 with...To investigate clinical implications of expression of CD40L in monocytes and changes in serum soluble CD40L in patients with acute coronary syndromes (ACS) Methods Sixteen control and 56 patients, including 24 with stable angina (SA), 20 with unstable angina (UA) and 12 with acute myocardial infarction (AMI) enrolled in this study Expression of CD40L in monocytes was analyzed by flow cytometry and sCD40L levels were measured by ELISA Results Expression of CD40L in monocytes and serum levels of sCD40L in UA and AMI patients were higher than in SA patients and controls In patients with AMI, sCD40L levels showed no significant increase when compared to patients with UA, while AMI patients had a peak level of sCD40L at 24 hours after AMI PTCA induced a marked rise in sCD40L levels in all patients, while CD40L expression in monocytes showed no difference between patients with PTCA, before and after Conclusion Enhanced level of serum sCD40L may be a reliable prognostic indicator for ACS and may represent a marker of coronary disease activity展开更多
文摘目的：研究血清可溶性CD40配体（sCD40L）和白细胞介素18（IL-18）水平与脑梗死的关系。方法：选择2012年5月~2014年12月于我院就诊的脑梗死患者70例纳入脑梗死组,同一时间段内在我院体检中心体检的70例健康志愿者纳入研究的健康组,分离血清并测定sCD40L、IL-18、细胞黏附分子1（ICAM-1）、血管细胞黏附分子1（VCAM-1）、CD11b、CD18、基质金属蛋白酶（MMP）10、解聚素-金属蛋白酶17（ADAM17）、ADAMTS12的含量,分离外周血单个核细胞并测定CD40、CD40L、NLRP3、凋亡相关点样蛋白（apoptotic speck-like protein containing a caspase recruitment domain,ASC）、Caspase-1的含量。结果：脑梗死组患者血清中sCD40L、IL-18、ICAM-1、VCAM-1、CD11b、CD18、MMP10、ADAM17、ADAMTS12的含量以及外周血中CD40、CD40L、NLRP3、ASC、Caspase-1的表达量显著高于健康组（P〈0.05）;脑梗死患者的神经功能缺损越严重,血清中sCD40L、IL-18的含量以及外周血中CD40、CD40L、NLRP3、ASC、Caspase-1的表达量越高（P〈0.05）;sCD40L、IL-18高水平组脑梗死患者血清中ICAM-1、VCAM-1、CD11b、CD18、MMP10、ADAM17、ADAMTS-12的含量显著高于低水平组（P〈0.05）。结论：血清可溶性CD40配体和白细胞介素18水平升高与脑梗死的发生以及病情严重程度相关。
文摘目的探讨ABCD3-I评分结合血清可溶性CD40配体(sCD40L)和血浆纤维蛋白原(Fib)检测对短暂性脑缺血发作(TIA)患者90d内发生脑梗死的预测价值。方法连续选取首次发病的TIA患者178例,随访90d,将发展为脑梗死的27例患者作为脑梗死组,未发展为脑梗死的151例患者作为对照组。入选者均进行ABCD3-I评分,采用酶联免疫吸附法检测sCD40L和Fib水平,绘制ROC曲线分析相关指标的预测价值。结果与对照组比较,脑梗死组ABCD3-I评分和sCD40L及Fib水平明显升高[(6.17±1.04)分vs (5.43±1.32)分,P=0.009;(222.00±28.75)μg/L vs (187.80±35.47)μg/L,P=0.014;(4.01±1.52)g/L vs (3.55±1.26)g/L,P=0.012]。ROC曲线分析显示,ABCD3-I评分联合sCD40L、ABCD3-I评分联合Fib、ABCD3-I评分联合sCD40L和Fib预测TIA患者90d内发展为脑梗死的曲线下面积分别为0.656(95%CI:0.586~0.732,P=0.001)、0.680(95%CI:0.615~0.745,P=0.000)和0.714(95%CI:0.654~0.774,P=0.000),均有预测价值,且ABCD3-I评分联合sCD40L和Fib的预测价值较前两者更高,其敏感性为90.1%,特异性为88.2%。结论 ABCD3-I评分联合sCD40L和Fib检测可进一步提高预测TIA患者90d内发展为脑梗死的准确率,且预测价值较高。
基金Supported by the Public Health Department Foundation of Hunan province, China, No. Y02-42
文摘AIM: To construct a recombinant murine CD40 ligand (mCD40L) eukaryotic expression vector for gene therapy and target therapy of hepatocellular carcinoma (HCC).METHODS: mCD40L cDNA was synthesized by RT-PCR with the specific primers and directly cloned into T vector to generate middle recombinant. After digestion with restriction endonuclease, the target fragment was subcloned into the multi-clone sites of the eukaryotic vector. The constructed vector was verified by enzyme digestion and sequencing,and the product expressed was detected by RT-PCR and immunofluorescence methods.RESULTS: The full-length mCD40L-cDNA was successfully cloned into the eukaryotic vector through electrophoresis,and mCD40L gene was integrated into the genome of infected H22 cells by RT-PCR. Murine CD40L antigen molecule was observed in the plasma of mCD40L-H22 by indirect immuno-fluorescence staining.CONCLUSION: The recombined mCD40L eukaryotic expression vector can be expressed in H22 cell line. It providesexperimental data for gene therapy and target therapy ofhepatocellular carcinoma.
文摘To observe the expression of CD40/CD40L on peripheral blood mononuclear cells （PBMC） in patients with eondyloma aeuminatum （CA）, flow eytometry was employed to examine the expression of CD40 and CD40L on PMBC in 36 patients with CA and 20 healthy controls. Our results showed that mean level of CD40 expression in CA patients was significantly lower than that in the controls （6.58 %±2.74 % vs 14.81 %±6.12 %, t=5. 703, P〈0.05）; the average level of CD40L in CA patients was also significantly lower than that in the controls （0.73 % ±0.54 % vs 2.67 %±2.43 %, t=3. 532, P〈0.05）. Our resutls suggest that the reduced costimulatory interaction of CD40 and CD40L in CA patients may be one of the important factors responsible for the low cellular immunity.
文摘BACKGROUND： Infection-induced thrombocytopenia （TCP） is an independent risk factor for death of patients with sepsis, but its mechanism is unknown. This study aimed to explore the underlying mechanism of TCP based on the relationship between TLR4 expression and platelet activation in septic patients. METHODS： A total of 64 patients with sepsis were prospectively studied. Platelet count （PC）, mean platelet volume （MPV）, platelet distribution width （PDW）, platelet TLR4 expression, platelet PAC-1 expression, sCD40L and TNF-a concentrations were compared between the healthy control group （15 volunteers） and sepsis group （64 patients） at admission and on the 3, 5, and 9 days after admission. The changes of MPV and PDW in the TCP and non-TCP subgroups of sepsis before and after treatment were recorded. Prognostic index was analyzed. RESULTS：PC was lower in the sepsis group （P=0.006）, and MPV and PDW were higher in the sepsis group than those in the healthy control group （P=0.046, P=0.001）. Platelet TLR4 and PAC-1 expressions, and sCD40L and TNF-a levels increased more significantly in the sepsis group （P〈0.001）. PAC-1 expression and TNF-a level were higher in the TCP group than in the non-TCP group before and after treatment （P=0.023, P=0.011）. sCD40L concentration and platelet TLR4 expression were significantly higher in the treated TCP group than in the non-TCP group （P=0.047, P=0.001）. Compared to the non-TCP group, the rate of bleeding was higher （P=0.024） and the length of ICU stay was longer （P=0.013）. The APACHE II score and the 28-day mortality were higher in the TCP group （P〈0.01, P=0.048）. CONCLUSIONS：The elevation of platelet TLR4 expression in sepsis along with platelet activation is closely related to the incidence of thrombocytopenia. The occurrence of TCP is a sign of poor prognosis in sepsis patients.
文摘Objectives To investigate the change and clinical significance of clopidogrel on platelet membrane CD40L in coronary artery disease patients before and after percutaneous coronary intervention(PCI). Methods 30 cases who were diagnosis coronary artery diseases(CAD) by coronary angiography, mean age 56±9 years old. All the patients who had no antiplatelet aggregation contraindication, were treated with standard anti angina pectoris drugs. Before PCI, all the patients took clopidogrel 75 mg per day. Activated platelet membrane CD40L express rate was measured by flow cytometry before and after PCI 6 hours. Results Activated platelet membrane CD40L express rate were 3.73±2.15 and 2.46±0.90, respectively in 30 patients before and after PCI 6 hours. Activated platelet membrane CD40L express rate was significantly decrease after PCI 6 hours than that before PCI(P<0.01). Conclusions Clopidogrel has significance effect on platelet membrane CD40L in coronary artery disease patients undergoing PCI. Clopidogrel can suppression platelet activation and prevent thromboembolism event occurrence.
基金Supported by the National Research,Development and Innovation Office,No.K-116128the New National Excellence Program of the Ministry for Innovation and Technology from the source of the National Research,Development and Innovation Fund,No.UNKP-20-4-I.
文摘BACKGROUND Colorectal cancer(CRC)is often associated with elevated platelet count(>400×10^(9)/L),known as thrombocytosis.The role of CD40 ligand(CD40L),a member of the tumor necrosis factor family,is controversial in CRC.Circulating CD40L is higher in CRC,but its relationship with disease staging and local and distant metastasis is not clear.Although most of the circulating CD40L is produced by platelets,no previous study investigated its relationship with CRC-related thrombocytosis.AIM To investigate the role of CD40L to predict the outcome of CRC and its relation to thrombocytosis.METHODS A total of 106 CRC patients and 50 age and sex-matched control subjects were enrolled for the study.Anamnestic data including comorbidities and histopathological data were collected.Laboratory measurements were performed at the time of CRC diagnosis and 1.5 mo and at least 6 mo after the surgical removal of the tumor.Plasma CD40L and thrombopoietin were measured via enzyme-linked immunosorbent assay,while plasma interleukin-6 was measured via electrochemiluminescence immunoassay.Patient follow-ups were terminated on January 31,2021.RESULTS Plasma CD40L of CRC patients was tendentiously higher,while platelet count(P=0.0479),interleukin-6(P=0.0002),and thrombopoietin(P=0.0024)levels were significantly higher as opposed to the control subjects.Twelve of the 106 CRC patients(11.3%)had thrombocytosis.Significantly higher CD40L was found in the presence of distant metastases(P=0.0055)and/or thrombocytosis(P=0.0294).A connection was found between CD40L and platelet count(P=0.0045),interleukin-6(P=0.0130),and thrombocytosis(P=0.0155).CD40L was constant with the course of CRC,and all baseline differences persisted throughout the whole study.Both pre-and postoperative elevated platelet count,CD40L,and interleukin-6 level were associated with poor overall and disease-specific survival of patients.The negative effect of CD40L and interleukin-6 on patient survival remained even after the stratification by thrombocytosis.CONCLUSION CD40L levels of CRC patients do not change with the course of the disease.The CD40L level is strongly correlated with platelet count,interleukin-6,thrombocytosis,and the presence of distant metastases.
文摘CD40L-CD40 interaction is central to the control of thymusdependent humoral immunity and cell mediated immune responses. CD40, a member of the tumor necrosis factor receptor （TNF- R） family, has been found on the surface of B lymphocytes, monocytes, hematopoietic progenitors, dendritic cells （DCs）, endothelial cells, epithelial cells and so on. Its natural ligand （CD40 ligand, CD40L）, CD154, a member of the tumor necrosis factor （TNF） family, is mainly expressed on activated CD4^＋ T lymphocytes. A direct growth-inhibitory effect can be found when ligated CD40 is on human breast, ovarian, cervical, bladder, non-small cell lung, and squamous epithelial carcinoma cells. This effect is related to the induction of cell cycle blockage and/or apoptosis. CD40L induces phenotypic and functional maturation of DCs, and can increase tumor immunogenicity through up-regulation of costimulatory molecular expression and cytokine production by epithelial cancer cells. As a result, CD40L can enhance tumor rejection immune responses. Furthermore, by means of a “bystander effect”, even CD40-negative tumor subsets can be eliminated by activated tumor-reactive cytotoxic T lymphocytes（CTL）. This review summarizes recent findings on CD40L recombinant protein and gene therapy-based tumor treatment approaches.
文摘Objectives To investigate the inhibitory effect of clopidogrel on release of soluble CD40 ligand （sCD40L） by ADP-activated platelet in patients with non-ST-segment elevation acute coronary syndromes（NSTEACS）. Methods Forty-two patients with NSTEACS were treated with clopidogrel for 6 - 8 days. In order to obtain platelet rich plasma （PRP） samples, the venous blood was drawn before and after treatment, respectively. The platelets were activated by adenosine diphosphate （ADP） , thus releasing sCD40L, sCD40L levels were determined by en- zyme-linked immunosorbent assay （ELISA） at different time of the reaction. Results Plasma sCD40L concentration before treatment was （0. 199 ± 0. 155 ） ng/mL, and （0. 190 ± 0. 176） ng/mL after treatment （ P 〉 0.05 ）. Before treatment the PRP sCD40L level at 20-minute of platelet activation was （4.34 ± 2.51 ） ng/mL, and decreased to （2.79 ±1.93 ） ng/mL after treatment （ P 〈 0. 001 ）. The corresponding level at 40 - minute of platelet activation was （5.29 ± 3. 13 ） ng/mL before treatment and （ 2.87 ± 1.59 ） ng/mL after treatment（ P 〈 0. 001 ）. Conclusions Short-term clopidogrel administration might inhibit the release of sCD40L by ADP-activated platelet in patients with NSTEACS, suggesting that, in addition to its antiplatelet potency, clopidogrel may still have an anti-inflammatory effect.
文摘To investigate clinical implications of expression of CD40L in monocytes and changes in serum soluble CD40L in patients with acute coronary syndromes (ACS) Methods Sixteen control and 56 patients, including 24 with stable angina (SA), 20 with unstable angina (UA) and 12 with acute myocardial infarction (AMI) enrolled in this study Expression of CD40L in monocytes was analyzed by flow cytometry and sCD40L levels were measured by ELISA Results Expression of CD40L in monocytes and serum levels of sCD40L in UA and AMI patients were higher than in SA patients and controls In patients with AMI, sCD40L levels showed no significant increase when compared to patients with UA, while AMI patients had a peak level of sCD40L at 24 hours after AMI PTCA induced a marked rise in sCD40L levels in all patients, while CD40L expression in monocytes showed no difference between patients with PTCA, before and after Conclusion Enhanced level of serum sCD40L may be a reliable prognostic indicator for ACS and may represent a marker of coronary disease activity
