粒细胞集落刺激因子动员骨髓干细胞治疗大鼠急性心肌梗塞

目的:探讨G-CSF动员的骨髓来源干细胞对急性心肌梗塞动物模型的治疗作用与对缺血濒死心肌的保护作用。方法:用异丙肾上腺素(ISO)复制急性心肌梗塞大鼠动物模型,于3h后用G-CSF动员骨髓干细胞释放和迁移至心肌梗塞部位,并分别于24h、48h和2周后杀死大鼠,取出心脏,检测心肌的病理变化情况。结果:用ISO后24h对照组可见散在心肌梗塞灶,坏死区周围有多量以中性粒细胞为主的炎症细胞浸润,而治疗组大鼠心肌坏死程度较对照组轻,浸润的细胞以单个核细胞为主;48h后对照组心肌梗塞灶进一步扩大,呈散在片状分布,而治疗组心肌梗塞灶扩大不明显,呈散在灶性分布,并可见成堆或散在分布的淋巴细胞样细胞;2周后,治疗组未见明显心肌梗塞后疤痕组织,可见新生的心肌细胞生长。结论:G-CSF对缺血濒死心肌有保护作用,用G-CSF动员骨髓来源的干细胞进行"自我移植",可用于急性心肌梗塞的治疗。     

岩藻多糖抑制小鼠心肌梗死后的心脏重构

目的 观察裙带菜提取物岩藻多糖对小鼠心肌梗死后心脏重构的影响.方法 将小鼠随机分为假手术组、心肌梗死模型组(采用冠状动脉左前降支结扎建立该模型)、低浓度或高浓度岩藻多糖处理组(心肌梗死术后每日灌胃给予200或500 mg/kg岩藻多糖处理).每日观察小鼠死亡情况,3周后采用超声心动图检测心功能,病理染色检测心肌梗死面积和,用RT-PCR检测心肌SOD、诱导型一氧化氮合酶(iNOS)以及炎性因子TNFα、IL-1β和TGFβmRNA表达,Western blot检测eNOS信号通路相关蛋白.结果 岩藻多糖能明显改善心肌梗死小鼠的心功能(P＜0.05)、减少梗死面积(P＜0.05),提高生存率(P＜0.05).与对照组相比,心肌iNOS和炎性因子TNFα、IL-1β及TGFβ mRNA表达明显下降(P＜0.05),SOD mRNA的表达明显增高(P＜0.05);岩藻多糖能激活eNOS信号通路.结论 岩藻多糖能减轻小鼠心肌梗死,其作用机制可能与其抗炎、抗氧化及激活eNOS信号通路有关.     

Transplantation of bone marrow-derived very small embryonic-like stem cells attenuates left ventricular dysfunction and remodeling after myocardial infarction

Adult bone marrow (BM) contains Sca-1+/Lin-/CD45- very small embryonic-like stem cells (VSELs) that express markers of several lineages, including cardiac markers, and differentiate into cardiomyocytes in vitro. We examined whether BM-derived VSELs promote myocardial repair after a reperfused myocardial infarction (MI). Mice underwent a 30-minute coronary occlusion followed by reperfusion and received intramyocardial injection of vehicle (n= 11), 1 x 10(5) Sca-1+/Lin-/CD45+ enhanced green fluorescent protein (EGFP)-labeled hematopoietic stem cells (n= 13 [cell control group]), or 1 x 10(4) Sca-1+/Lin-/CD45- EGFP-labeled cells (n= 14 [VSEL-treated group]) at 48 hours after MI. At 35 days after MI, VSEL-treated mice exhibited improved global and regional left ventricular (LV) systolic function (echocardiography) and attenuated myocyte hypertrophy in surviving tissue (histology and echocardiography) compared with vehicle-treated controls. In contrast, transplantation of Sca-1+/Lin-/CD45+ cells failed to confer any functional or structural benefits. Scattered EGFP+ myocytes and capillaries were present in the infarct region in VSEL-treated mice, but their numbers were very small. These results indicate that transplantation of a relatively small number of CD45- VSELs is sufficient to improve LV function and alleviate myocyte hypertrophy after MI, supporting the potential therapeutic utility of these cells for cardiac repair. Disclosure of potential conflicts of interest is found at the end of this article.     

Effect of acute nutritional deprivation on macrophage colony-stimulating factor and macrophage progenitor cells in mice.

The effect of short-term nutritional deprivation on host defenses and on the parameters of macrophage production was determined in outbred mice. Confirming previous data from this laboratory, initial experiments demonstrated that starved mice were relatively resistant to infection by Listeria monocytogenes as determined by spleen and liver bacterial counts. The number of macrophage progenitor cells in bone marrow rose slightly during a 72-h starvation period and returned to normal during refeeding. By contrast, the number of progenitor cells in spleens fell to 12% of the base line during starvation. The concentration of the macrophage colony-stimulating factor in serum decreased during starvation and returned to normal during refeeding. Additional experiments were performed to determine whether starved mice had increased parameters of macrophage production during listerial infection. The number of progenitor cells in the bone marrow and spleens of starved mice had increased compared with that of fed mice early in infection. Macrophage colony-stimulating factor levels in starved mice rose early and remained elevated during infection but were not as high as in fed mice. These data document the changes in the parameters of monocyte production during starvation and suggest that the number of macrophage progenitor cells may be related to increased resistance to L. monocytogenes.     

心肌梗死后心室电重构的细胞和分子生物学机制

Arrhythmia is common in cardiovascular diseases, especially after myocardial infarction. This article reviews the electrophysiologic changes following myocardial infarction at different phases. Modulations of ion channel function that might contribute to electrical remodeling, such as cellular (autocrine/paracrine) factors and regulators of ion channel gene, are discussed. Unresolved problems in ventricular electrical remodeling after myocardial infarction are also considered.     

Mesenchymal stem cells overexpressing CXCR4 attenuate remodeling of postmyocardial infarction by releasing matrix metalloproteinase-9

Myocardial infarction (MI) results in loss of myofibers in the ischemic zone of the heart, followed by scar formation. These factors increase barriers to mobilization of mesenchymal stem cells (MSC), thereby impeding their effectiveness in cardiac repair. This study examined MSC overexpressing CXCR4 (MSC(CX4)) to determine penetration into infarcted myocardium by releasing collagen degrading enzyme, matrix metalloproteinase-9 (MMP-9). In vitro, mouse MSC were utilized, including MSC using adenoviral transduction, to express CXCR4/green fluorescent protein (GFP) (MSC(CX4)), Null/GFP (MSC(Null)), MSC treated with siRNA targeting CXCR4 (MSC(siR)), MSC treated with control siRNA(MSC(Con-siR)), MSC(CX4) treated with siRNA targeting MMP-9 (MSC(CX4-siRMP9)) and MMP-14 (MSC(CX4-siRMP14)), MSC derived from MMP-9 knockout mouse with adenoviral transduction for GFP (MSC(MP9-)), or MSC(MP9-) plus overexpressing CXCR4 (MSC(MP9-CX4)). The ability to cross the basement membrane was evaluated in all MSC using a trans-collagen gel invasion assay. The CXCR4 and MMP expression were analyzed by Western blot. In vivo, MSC with various treatments were infused into mice via tail vein injections 7 days after MI. Echocardiography was performed before harvesting hearts for analysis at 4 weeks after MSC injection. Both in vitro and in vivo studies demonstrated upregulation of MMP-9 induced by MSC(CX4), promoting increased GFP(+) cell migration into the infarcted area in comparison to control group. This enhanced response was associated with reduced left ventricular (LV) fibrosis, increased LV free wall thickness, angiogenesis, and improved LV function. Under hypoxic conditions, MMP-9 is upregulated in MSC(CX4), thus facilitating cross of the basement membrane, resulting in an improved remodeling of post-MI tissue.     

Gene expression of colony-stimulating factors and stem cell factor after myocardial infarction in the mouse

Recent studies have suggested that cytokines such as macrophage colony-stimulating factor (M-CSF) might be involved in the pathogenesis of ischaemic heart disease. Macrophage colony-stimulating factor, granulocyte-colony stimulating factor (G-CSF), granulocyte-macrophage-colony stimulating factor (GM-CSF), stem cell factor (SCF), interleukin-3 (IL-3) and interleukin-7 (IL-7) are potent cytokines belonging to the same structual class that may affect function, growth and apoptosis both in the heart and other organs. The aims of the present study were to characterize a post-infarction model in the mouse and to examine mRNA expression of M-CSF, GM-CSF, SCF, IL-3 and IL-7 during the development of heart failure. Myocardial infarction (MI) was induced in mice by ligation of the left coronary artery. Average infarct size was 40% and the mice developed myocardial hypertrophy and pulmonary oedema. Ribonuclease (RNAase) protection assays showed abundant cardiac expression of M-CSF and SCF. After MI, we measured down-regulation of cytokine mRNA expression in the heart (M-CSF, SCF), lung (M-CSF), liver (M-CSF) and spleen (M-CSF) compared with sham. Cardiac G-CSF, GM-CSF and IL-7 mRNAs were not detected. In conclusion, abundant cardiac gene expression of M-CSF and SCF was found. In our mouse model of MI, M-CSF and SCF were down-regulated in the heart and several other organs suggesting specific roles for these cytokines during development of ischaemic heart failure.     

自聚肽纳米纤维支架承载骨髓源性心肌干细胞移植治疗心肌梗死的实验研究

目的 探讨自聚肽纳米纤维支架承载骨髓源性心肌干细胞(MCSC)移植对大鼠心肌梗死后心功能恢复的影响,寻找一种更适合承载心肌干细胞治疗心肌梗死的可注射性生物材料.方法 通过单细胞克隆培养技术,从骨髓间充质干细胞中筛选具有心肌特异分化潜能的MCSC,固相合成自聚多肽.将雌性大鼠心肌梗死模型随机分为3组:对照组、MCSC移植...     

Administration of granulocyte colony-stimulating factor after myocardial infarction enhances the recruitment of hematopoietic stem cell-derived myofibroblasts and contributes to cardiac repair

The administration of granulocyte colony-stimulating factor (G-CSF) after myocardial infarction (MI) improves cardiac function and survival rates in mice. It was also reported recently that bone marrow (BM)-derived c-kit(+) cells or macrophages in the infarcted heart are associated with improvement of cardiac remodeling and function. These observations prompted us to examine whether BM-derived hematopoietic cells mobilized by G-CSF administration after MI play a beneficial role in the infarct region. A single hematopoietic stem cell from green fluorescent protein (GFP)-transgenic mice was used to reconstitute hematopoiesis in each experimental mouse. MI was then induced, and the mice received G-CSF for 10 days. In the acute phase, a number of GFP(+) cells showing the elongated morphology were found in the infarcted area. Most of these cells were positive for vimentin and alpha-smooth muscle actin but negative for CD45, indicating that they were myofibroblasts. The number of these cells was markedly enhanced by G-CSF administration, and the enhanced myofibroblast-rich repair was considered to lead to improvements of cardiac remodeling, function, and survival rate. Next, G-CSF-mobilized monocytes were harvested from the peripheral blood of GFP-transgenic mice and injected intravenously into the infarcted mice. Following this procedure, GFP(+) myofibroblasts were observed in the infarcted myocardium. These results indicate that cardiac myofibroblasts are hematopoietic in origin and could arise from monocytes/macrophages. MI leads to the recruitment of monocytes, which differentiate into myofibroblasts in the infarct region. Administration of G-CSF promotes this recruitment and enhances cardiac protection.     

Effects of interleukin-37 on cardiac function after myocardial infarction in mice

Background: Interleukin-37 (IL-37) is a new discovered member of the interleukin family and plays anti-inflammatory effect in some inflammatory disease. A recent study found that IL-37 elevated significantly in peripheral blood of patients with acute myocardial infarction. We aimed to explore the effect IL-37 on cardiac function after mice myocardial infarction (MI) and its mechanism. Methods: Acute MI mouse model was established and divided into three groups: sham group, MI group and IL-37 treatment group. MPO expression was detected by immunohistochemistry; NF-κB signaling pathway was tested by Western blot; and cardiac function was measured by echocardiography. Results: Compared with MI mice, IL-37 treatment showed an obvious decrease of MPO expression, suppression of p-p65 expression, and improved cardiac function by decreasing left ventricular shortening fraction (LVFS). Conclusion: IL-37 may improve MI mice cardiac function via inhibition of inflammatory NF-κB signaling pathway.     

Effects of macrophage colony-stimulating factor and interleukin-2 administration on NK1.1(+) cells in mice

We studied the effects of M-CSF and IL-2 on NK1.1(+) cell activity in vivo and in vitro. Administration of M-CSF increased the number of splenic NK1.1(+) cells (vs. saline: P<0.01). Moreover, the combination of M-CSF and IL-2 (M-CSF+IL-2) produced a synergistic expansion of the number of NK1.1(+) cells compared with each single treatment (vs. saline: P<0.001). The NK1.1(+) cells were isolated from the spleen of each treated mouse (four treatment groups: saline, IL-2 alone, M-CSF alone, M-CSF+IL-2) and their functions (IL-2-induced proliferation, IFN-gamma production and cytostatic activity) were evaluated in vitro. The NK1.1(+) cells from M-CSF alone and M-CSF+IL-2 treated mice showed greater responsiveness in terms of IL-2-induced proliferation, production of IFN-gamma and cytostatic activity than the cells from saline and IL-2 alone treated mice. The NK activity in vivo was enhanced by the administration of M-CSF and IL-2, as assessed by the 'Lung clearance assay' (clearance of Yac-1 cells in lung). And the M-CSF+IL-2 treatment induced the highest NK activity of the four treatments. To show a practical effect of upregulation of NK activity in vivo by M-CSF and IL-2 administration, the effect of the four treatments on an experimental tumor metastasis model was examined. The IL-2 alone, M-CSF alone and M-CSF+IL-2 treatment reduced the metastasis of B16 melanoma. And the M-CSF+IL-2 treatment proved of greater benefit to the antimetastatic activity than each single treatment. Our results demonstrated that the administration of M-CSF increases the number of NK1.1(+) cells, which have good responsiveness to IL-2. Furthermore, the combination treatment of M-CSF and IL-2 in vivo augments the increase of NK1.1(+) cells. And these effects can contribute to the antimetastatic activity in vivo.     

人脐血单个核细胞多次静脉移植家兔急性心肌梗死后的胶原重构

背景：以往干细胞移植治疗心肌梗死的研究,均为单次经静脉或冠脉注射移植。 目的：进一步验证人脐血单个核细胞多次静脉移植对家兔急性心肌梗死胶原重构及心功能影响。 方法：取家兔45只结扎冠脉左前降支制备急性心肌梗死模型,随机分为3组,①多次移植组：造模后7,9,11,13 d经耳缘静脉注入BrdU标记人脐血单个核细胞生理盐水。②单次移植组：造模后7 d注入BrdU标记人脐血单个核细胞生理盐水,9,11,13 d注入生理盐水。③心梗对照组：仅注入生理盐水。另取家兔5只为假手术组。 结果与结论：与对照组相比,两移植组心功能左室短轴缩短率、左室射血分数明显升高(P < 0.05);且多次移植组改善效果优于单次移植组(P < 0.05);免疫组织化学显示两移植组造模后2,4周心梗周边区均存在BrdU阳性细胞,但多次移植组BrdU阳性细胞计数多于单次移植组;改良Masson’s染色显示与假手术组比较,对照组梗死区及非梗死区胶原密度显著增加,梗死区域胶原纤维部分融合,排列较紊乱,心肌基本组织结构破坏;与对照组比较,两移植组造模后2,4周梗死周边区域心肌细胞间胶原含量、胶原纤维明显减少,胶原纤维排列较为有序;与单次细胞移植组比较,多次细胞移植组进一步改善。提示多次静脉移植脐血单个核细胞改善急性心肌梗死心功能、阻抑心肌胶原纤维重构疗效优于单次静脉移植。     

Transplantation of peripheral blood stem cells mobilized by intensified consolidation and granulocyte colony-stimulating factor in acute leukemia

The purpose of this study was to evaluate the feasibility and efficacy of autologous transplantation of peripheral blood stem cells (PBSC) mobilized with high-dose consolidation chemotherapy and granulocyte colony-stimulating factor in patients with acute myelogenous leukemia (AML). Twenty patients received myeloablative chemotherapy or chemo-radiotherapy including total body irradiation followed by the infusion of PBSC. PBSC were collected by large-volume leukaphereses. The mean number of mononuclear cells and CD34-positive cells infused were 7.2 x 10(8)/kg (range, 2.2-16.6), and 6.6 x 106/kg (range, 2.1-27.7), respectively. Engraftment failure was not seen in the enrolled patients. The median time to neutrophil (> or = 500/microL) and platelet recovery (> or = 50,000/microL) from the transplant was 12 days (range, 8-20) and 28 days (range, 10-600), respectively. The 2-year probability of disease-free survival (DFS) and relapse were 43% and 57% for patients with AML transplanted in first complete remission (CR1). The outcome of the patients transplanted in the advanced status was significantly worse than the patients transplanted in CR1 (P=0.04). Most relapses occurred within 1 year after transplantation. Fatal hepatic veno-occlusive disease was observed in one case. Other transplantation-related toxicities were mild. Our results demonstrated that autologous transplantation of high-dose consolidation chemotherapy-mobilized peripheral blood progenitor cells is feasible in the patients with AML in CR1. To further reduce the risk of leukemia relapse, much effort should be contributed to the field of ex vivo purging and post-transplant immunotherapy.     

Bone marrow progenitors cultured in the presence of granulocyte-macrophage colony-stimulating factor versus macrophage colony-stimulating factor differentiate into macrophages with distinct tumoricidal capacities

Bone marrow-derived cells from C3H/HeJ mice were cultured in the presence of recombinant murine granulocyte-macrophage colony-stimulating factor (rGM-CSF) or highly purified murine macrophage colony-stimulating factor (CSF-1) for 7 days. Following this 7-day culture period, mature macrophages were harvested and replated at precise densities in the absence of exogenous rGM-CSF or CSF-1, and assayed in a two-signal tumoricidal assay. Cultures were stimulated with medium only or with combinations of recombinant interferon-gamma (rIFN-gamma) as the "priming" signal, and/or butanol-extracted lipopolysaccharide (But-LPS) as the "triggering" signal for 24 hr. At this time, 51Cr-labeled, P815 tumor target cells were added, and the percent tumor cell cytotoxicity was determined after 16 hr. Macrophages derived under the influence of rGM-CSF exhibited significant tumoricidal capacity with medium alone (16 +/- 5%). The addition of "priming" signal only (i.e., rIFN-gamma, 10.0 U/ml) significantly increased tumoricidal capacity to 31 +/- 9%. Treatment with But-LPS alone did not alter the basal tumoricidal activity of rGM-CSF-derived macrophages. Combinations of rIFN-gamma (10.0 U/ml) and But-LPS (0.5-5.0 micrograms/ml) generated highly tumoricidal macrophages (50-60% tumor cell cytotoxicity). In contrast, medium-treated CSF-1-derived macrophages exhibited a significantly lower basal level of tumor cytotoxicity (6 +/- 3%). Unlike rGM-CSF-derived macrophages, treatment of CSF-1-derived macrophages with high concentrations of rIFN-gamma alone did not increase significantly the level of cytotoxicity above that of medium-treated cultures. However, CSF-1-derived macrophages responded to the highest concentrations of But-LPS (5.0 micrograms/ml) to increase tumoricidal activity from 6 +/- 3% to 17 +/- 5%. Optimal tumoricidal activity (44 +/- 17%) was observed when CSF-1-derived macrophages were treated simultaneously with high concentrations of both rIFN-gamma and But-LPS. Thus, macrophages derived from bone marrow progenitors in either rGM-CSF or CSF-1 exhibited tumoricidal capacities that differed in basal activity as well as in their requirements for and sensitivities to "priming" and "triggering" signals.     

CD4+T淋巴细胞在炎症性心脏重构中的作用

心肌纤维化是指心肌细胞外基质进行性累积,导致心室僵硬和舒张充盈受损,是心衰患者临床预后不良的指标.多种原因导致的心肌纤维化均经历过炎症过程,炎症与心肌纤维化常并存于病变心肌.T淋巴细胞通过与心肌成纤维细胞相互作用而影响胶原及基质金属蛋白酶表达,参与炎症性心肌纤维化的调控.对于不同T淋巴细胞亚群如Th1、Th2、Th17...     

Defective macrophage recruitment and clearance of apoptotic cells in the uterus of osteopetrotic mutant mice lacking macrophage colony-stimulating factor (M-CSF)

There are large numbers of macrophages in the uterus of normal mice. During estrus and metestrus endometrial epithelial cells express macrophage colony-stimulating factor (M-CSF). Numbers of uterine macrophages showed cyclic changes and accumulated beneath the endometrial epithelial cells at estrus and metestrus. However, numbers of uterine macrophages in osteopetrotic (op/op) mice were reduced tenfold compared with normal littermate mice and op/op mouse macrophages were ultrastructurally immature throughout the estrous cycle. Several macrophage chemokines were produced in the uterus. However, administration of antibody against the macrophage colony stimulating factor receptor (c-fms) severely diminished the number of uterine macrophages in normal littermate mice, implying that M-CSF plays a major role in macrophage recruitment in the uterus. Endometrial epithelial cells underwent apoptosis at estrus and metestrus and were disposed into the uterine lumen in op/op mice and littermate mice. In littermate mice a large number of macrophages accumulated beneath the endometrial epithelial cells and actively removed apoptotic cells. In contrast, there were few macrophages in op/op mice and clearance of apoptotic cells by macrophages was defective in the uterus of these mice. Thus M-CSF plays important roles in the recruitment and differentiation of macrophages and in scavenging effete epithelial cells in the uterus.     

M-CSF对RAW264.7细胞抗氧化系统的影响

目的：探讨巨噬细胞集落刺激因子（Ｍａｃｒｏｐｈａｇｅ ｃｏｌｏｎｙ－ｓｔｉｍｕｌａｔｉｎｇ ｆａｃｔｏｒ,Ｍ－ＣＳＦ）抗单核／巨噬细胞氧化损伤的作用机理,揭示Ｍ－ＣＳＦ对小鼠巨噬细胞系ＲＡＷ２６４．７细胞抗氧化系统影响。方法：以Ｌ９２９细胞条件培养液为Ｍ－ＣＳＦ来源,采用酶活笥测定等生化测定方法,考察Ｍ－ＣＳＦ细胞内还原型谷胱甘肽含量、脂质过氧化物含量、过氧化氢酶活性、谷胱甘肽还原酶活性等检测指标     

干细胞生长因子和粒细胞集落刺激因子与心肌梗死大鼠体内骨髓间充质干细胞的迁移

背景：外周静脉移植间充质干细胞只有1%~5%的移植细胞能归巢到心肌梗死区域。 目的：观察干细胞生长因子、粒细胞集落刺激因子对骨髓间充质干细胞归巢的影响。 方法：采用贴壁培养法分离培养SD大鼠骨髓间充质干细胞,取传至3~5代细胞。建立SD大鼠急性心肌梗死模型,干细胞生长因子组、粒细胞集落刺激因子组、干细胞生长因子+粒细胞集落刺激因子组在骨髓间充质干细胞移植前3 d和移植后3 d单独或混合皮下注射干细胞生长因子、粒细胞集落刺激因子,骨髓间充质干细胞组不注射细胞因子。 结果与结论：荧光显微镜下观察,骨髓间充质干细胞迁移至心肌梗死组织,骨髓间充质干细胞组、干细胞生长因子组、粒细胞集落刺激因子组迁移至心肌梗死区的骨髓间充质干细胞数量没有明显的区别(P > 0.05),干细胞生长因子+粒细胞集落刺激因子组的骨髓间充质干细胞数量明显高于其他3组(P < 0.05)。免疫荧光组织化学显示,植入的部分骨髓间充质干细胞表达心肌特异蛋白cTnI。结果说明干细胞生长因子和粒细胞集落刺激因子两种细胞因子联合应用可以促进骨髓间充质干细胞归巢至心肌梗死区域,在体内微环境的诱导下,骨髓间充质干细胞能够转化为心肌样细胞。     

大鼠急性心肌梗死心室重塑中细胞因子与胶原的变化

目的:探讨大鼠急性心肌梗死（MI）后心室重塑过程细胞因子与胶原分子的关系。 方法:制备雄性Wistar大鼠心肌梗死和假手术对照模型，于手术后3 d、1 w、4 w分别观察不同时点梗死区和非梗死区的Ⅰ、Ⅲ型胶原及炎症因子的mRNA变化。 结果:心肌梗死后第3 d胶原（Ⅰ、Ⅲ型胶原）和细胞因子（TGF-β1、TNF-α）皆上升，梗死区Ⅰ、Ⅲ型胶原在第4周仍然比非梗死区为高，TGF-β1、TNF-α在第1周达到高峰后逐渐下降但仍高于同期假手术组（P＜0.01），相关性分析提示梗死区和非梗死区TGF-β1、TNF-α均与Ⅰ、Ⅲ型胶原存在相关（P<0.01）。 结论:炎症因子参与心室重塑的病理生理过程，干预细胞因子可能作为早期防治心室重塑的手段。