Elevated circulating inflammatory markers in female patients with cardiac syndrome X

Background. The pathophysiological mechanism in cardiac syndrome X has been suggested as impairment in normal endothelial function of the coronary microvasculature, resulting in inadequate flow reserve. However, despite the extensive studies, the precise mechanisms in cardiac syndrome X remain unclear. Purpose. The present study was, therefore, to investigate whether inflammatory cells and markers such as C-reactive protein (CRP) and interleukin-6 (IL-6) might be involved in the pathogenesis of cardiac syndrome X. Methods. Thirty-six female patients with cardiac syndrome X and 30 sex-matched normal controls were prospectively enrolled in this study. Blood samples were drawn for measuring white blood and monocyte cells, inflammatory markers such as CRP and IL-6, and data were compared between patients with cardiac syndrome X and normal controls. Results. The data showed that increased numbers of white blood and monocyte cells were found in patients with cardiac syndrome X compared with normal controls (white blood cells: 7072 ± 1146/mm³ vs. 6138 ± 1079/mm³; monocyte cells: 612 ± 186/mm³ vs. 539 ± 190/mm³ p < 0.05, respectively). Moreover, patients with cardiac syndrome X were detected to have significantly higher plasma CRP and IL-6 levels in comparison with patients with normal controls (CRP: 0.48 ± 0.26 mg/L vs. 0.22 ± 0.15 mg/L; IL-6: 13.4 ± 1.2 pg/dl vs. 6.2 ± 0.6 pg/dl, p < 0.01, respectively). The multivariate analysis showed that CRP was the independent variable most strongly associated with cardiac syndrome X. Conclusions. Our data suggested that low-grade, chronic inflammation might contribute to the development of cardiac syndrome X manifested by increased plasma levels of inflammatory cells and inflammatory markers.     

Interleukin-6 and renal cell cancer: Production,regulation, and growth effects

Summary Interleukin-6 (IL-6) is a recently characterized pleiotropic cytokine with antitumor activity. We investigated the production of IL-6 by renal cell cancer (RCC) and the growth effects of IL-6 on RCC. Using immunoperoxidase staining, cytoplasmic IL-6 was detected in four of four renal tumor lines and in tumor cells from freshly nephrectomized RCC. We found that IL-6 mRNA was expressed at basal culture conditions by seven of ten RCC tumor lines tested. Biologically active IL-6, as measured by the B9 assay, was produced by all ten RCC tumor lines. The addition of tumor necrosis factor (TNF) significantly augmented the expression of IL-6 mRNA in five RCC tumor lines (P <0.05). The combination of interferon IFN and TNF further enhanced the augmented IL-6 mRNA accumulation seen with TNF alone (P <0.05). TNF also significantly stimulated the production of biologically active IL-6 (P <0.01). Furthermore, IFN and TNF were found to enhance IL-6 bioactivity synergistically (P <0.05). The growth effects of IL-6 on RCC were also investigated in two experimental systems: IL-6 was found to stimulate proliferative responses in six of six RCC tumor lines as measured by thymidine-uptake assays; however, only one of six tumor lines displayed an increase in proliferative response of greater than 21% (113%). The growth effect of IL-6 was further tested in clonogenic assays. One of the tumor lines tested displayed an enhanced growth response of up to 200%. We conclude that IL-6 is produced by RCC; this production is enhanced by TNF with synergistic effects seen with IFN at both mRNA and protein levels. In turn, IL-6 may have a modest stimulatory growth effect on certain RCC tumor lines.This work was supported in part by National Institutes of Health Grant CA 522 499-01, and the Margaret Early Foundation     

Interleukin-6 as an independent predictor of future cardiovascular events in high-risk Japanese patients: comparison with C-reactive protein

Inflammation is associated with the development of atherosclerotic vascular lesions and some inflammatory parameters are used as cardiovascular (CV) risk markers. The present study was designed to assess the predictive power of interleukin (IL)-6 for future CV events. In 121 Japanese patients with multiple CV risk factors and/or disease, serum concentrations of IL-6 and high sensitive C-reactive protein (hs-CRP) were measured. During follow-up periods (mean, 2.9 years) after the baseline assessment, 50 patients newly experienced CV events such as stroke/transient ischemic attack (n=10), heart failure hospitalization (n=6), acute coronary syndrome (n=7), and revascularization for coronary artery disease (n=15) and peripheral arterial disease (n=12). The serum level of IL-6, but not hs-CRP, was significantly higher in patients who had CV events than in event-free subjects (3.9±2.6 and 3.0±2.2 pg/mL, P=0.04). When the patients were divided into three groups by tertiles of basal levels of IL-6 (<1.85, 1.85-3.77, and ≥3.77 pg/mL), cumulative event-free rates by the Kaplan-Meier method were decreased according to the increase in basal IL-6 levels (65%, 50%, and 19% in the lowest, middle, and highest tertiles of IL-6, respectively; log-rank test, P=0.002). By univariate Cox regression analysis, previous CV disease, creatinine clearance, and serum IL-6 levels were significantly associated with CV events during follow-up. Among these possible predictors, the highest tertile of IL-6 was only an independent determinant for the morbidity in the multivariate analysis (hazard ratio 2.80 vs. lowest tertile, P=0.006). These findings indicate that IL-6 is a powerful independent predictor of future CV events in high-risk Japanese patients, suggesting its predictive value is superior to that of hs-CRP.     

Lung squamous cell carcinoma and adenocarcinoma cell lines use different mediators to induce comparable phenotypic and functional changes in human monocyte-derived dendritic cells

Tumor-derived immunosuppressive factors contribute to the evasion of malignant cells from the immune response, partially by hampering dendritic cell (DC) differentiation. Here, we analyze whether soluble mediators released by the most frequent histological types of non-small cell lung carcinoma, squamous cell carcinoma (SCC), and adenocarcinoma (AD) cells, affect the development and functionality of DC. Monocytes from healthy donors were differentiated in vitro into DC with granulocyte–macrophage colony-stimulating factor (GM-CSF) and interleukin (IL)-4, in the absence or presence of soluble factors (SF) from SCC or AD cell lines. Monocytes were differentiated in parallel into macrophages (MΦ s) with macrophage colony-stimulating factor (M-CSF). SF-treated DC were phenotypically and functionally more similar to MΦ s than to untreated DC [control DC (Ctrl-DC)]. Both tumors increased myelomonocytic markers (CD14, CD16, CD32, and CD163) and impaired CD1a expression on DC. SF-treated DC increased their endocytic capacity, and released higher levels of IL-6, IL-10, and lower levels of IL-12, compared to Ctrl-DC. SF-treated DC were poor stimulators in mixed lymphocyte reactions, and naïve CD4⁺ T lymphocytes stimulated by SF-treated DC secreted lower levels of interferon (IFN)-γ and higher amounts of IL-10 than controls. In contrast to AD, the effects caused by SCC were mostly abolished by IL-6 neutralization during monocyte differentiation. However, tumor-derived prostanoid blockade recovered the IFN-γ levels secreted by lymphocytes stimulated with SF-treated DC, whereas prostanoid/IL-6 or prostanoid/IL-10 blockade decreased IL-10 production only by SCC-DC-stimulated lymphocytes. Thus, we provide evidence that lung SCC and AD cause comparable deficiencies on DC in vitro, skewing monocyte differentiation from DC to MΦ -like cells, but most of these changes occurred via different mediators.     

AECOPD患者血清降钙素原与其它炎症指标水平的相关性分析

目的：分析慢性阻塞性肺疾病急性加重（AECOPD）患者血清降钙素原与其它炎症指标水平的相关性。方法：选择2012年1月至2012年12月我院重症医学科收治的195例AECOPD患者作为研究对象,所有患者均采血后行降钙素原（procalcitonin,PCT）、超敏c反应蛋白（C-reactiveprotein,hs-CRP）、血常规（blood General,WBC）、血沉（erythrocyte sedimentationrate,ESR）、白介素六（interleukin-6,IL-6）检测,同时采集痰标本后行痰培养和药敏试验检测,分析其血清PCT水平与其它炎症指标的相关性。结果：195例AECOPD患者中,PCT增高者43例（22．1％）,正常者152例（77．9％）,其血清PCT水平与hs-CRP、WBC、中性粒细胞百分比（neutrophilpercentage,NEUT％）均显著相关（P〈0．05）,相关系数分别为0．262、0．382、0．333,与ESR、IL-6、痰培养结果无明显相关性（P〉0．05）。结论：血清PCT水平判定AECOPD患者是否合并感染有一定的局限性,联合检测hs-CRP、WBC、NEUT％,可作为诊断AECOPD感染的有力补充。     

AECOPD患者血清降钙素原与其它炎症指标水平的相关性分析

目的:分析慢性阻塞性肺疾病急性加重(AECOPD)患者血清降钙素原与其它炎症指标水平的相关性。方法:选择2012年1月至2012年12月我院重症医学科收治的195例AECOPD患者作为研究对象,所有患者均采血后行降钙素原(procalcitonin,PCT)、超敏C反应蛋白(C-reactive protein,hs-CRP)、血常规(blood General,WBC)、血沉(erythrocyte sedimentation rate,ESR)、白介素六(interleukin-6,IL-6)检测,同时采集痰标本后行痰培养和药敏试验检测,分析其血清PCT水平与其它炎症指标的相关性。结果:195例AECOPD患者中,PCT增高者43例(22.1%),正常者152例(77.9%),其血清PCT水平与hs-CRP、WBC、中性粒细胞百分比(neutrophil percentage,NEUT%)均显著相关(P0.05),相关系数分别为0.262、0.382、0.333,与ESR、IL-6、痰培养结果无明显相关性(P0.05)。结论:血清PCT水平判定AECOPD患者是否合并感染有一定的局限性,联合检测hs-CRP、WBC、NEUT%,可作为诊断AECOPD感染的有力补充。     

冠心病患者血清白介素-6和C-反应蛋白的水平变化及临床意义

探讨白介素-6(IL-6)和C-反应蛋白(CRP)在冠心病(CHD)的发生发展中所起的作用及其之间的相互关系和临床意义。对70例住院冠心病患者采用ELISA和散射比浊法分别测定其血清中的IL-6、CRP水平的变化并与同期体检健康者34例作对照。显示患者CRP、IL-6值均明显高于对照组,差异显著(P<0.01)。炎症反应在冠心病的发生发展中起着重要的作用。如果能够在测定病人CRP及IL-6水平的同时建立患者的个体标准,则可以对患者病变程度及预后提供更好的临床依据。     

Interleukin 21 therapy increases the density of tumor infiltrating CD8<Superscript>+ </Superscript>T cells and inhibits the growth of syngeneic tumors

Interleukin (IL)-21 is a recently discovered cytokine in early clinical development, which has shown anti-tumor activity in various animal models. In the present study, we examine the anti-tumor activity of IL-21 protein therapy in two syngeneic tumor models and its effect on the density of tumor infiltrating T cells. We treated mice bearing established subcutaneous B16 melanomas or RenCa renal cell carcinomas with intraperitoneal (i.p.) or subcutaneous (s.c.) IL-21 protein therapy and subsequently scored the densities of tumor infiltrating CD4⁺ and CD8⁺ T cells by immunohistochemistry. Whereas both routes of IL-21 administration significantly inhibited growth of small, established RenCa and B16 tumors, only s.c. therapy significantly inhibited the growth of large, established tumors. We found a greater bioavailability and significant drainage of IL-21 to regional lymph nodes following s.c. administration, which could account for the apparent increase in anti-tumor activity. Specific depletion of CD8⁺ T cells with monoclonal antibodies completely abrogated the anti-tumor activity, whereas NK1.1⁺ cell depletion did not affect tumor growth. In accordance, both routes of IL-21 administration significantly increased the density of tumor infiltrating CD8⁺ T cells in both B16 and RenCa tumors; and in the RenCa model s.c. administration of IL-21 led to a significantly higher density of tumor infiltrating CD8⁺ T cells compared to i.p. administration. The densities of CD4⁺ T cells were unchanged following IL-21 treatments. Taken together, these data demonstrate that IL-21 protein has anti-tumor activity in established syngeneic tumors, and we show that IL-21 therapy markedly increases the density of tumor infiltrating CD8⁺ T cells.     

头孢曲松联合雷尼替丁治疗急性胰腺炎患者的临床研究

目的:探讨头孢曲松联合H2受体阻断剂(雷尼替丁)治疗急性胰腺炎患者的临床疗效及可能机制。方法:92例急性胰腺炎患者按抽签法分为对照组(n=46)与实验组(n=46),对照组行头孢曲松治疗,实验组基于对照组加用雷尼替丁治疗,比较两组血清白细胞介素-6(IL-6)、C反应蛋白(CRP)、血小板活化因子(PAF)、超氧化物歧化酶(SOD)、丙二醇(MDA)、胃泌素、胃动素、心率(HR)、平均动脉压(MAP)水平的变化,临床表现缓解时间及临床疗效。结果:治疗后,实验组血清IL-6、CRP、PAF、MDA、胃泌素水平及HR均显著低于对照组(P0.05),血清SOD、胃动素水平及MAP均明显高于对照组(P0.05),临床表现缓解时间明显短于对照组,临床有效率显著高于对照组(P0.05)。结论:头孢曲松联合雷丁替尼可有效提高急性胰腺炎的临床疗效,可能与其抑制炎症反应、抗氧化作用有关。     

冠心病患者血清IL-37水平及其与血清IL-6、IL-10、CRP水平的关系

目的:探讨不同类型冠心病患者血清白介素-37(IL-37)的水平及其与血清白介素-6(IL-6)、白介素-10(IL-10)、C反应蛋白(CRP)水平的关系。方法:选取急性心肌梗死患者20例(AMI组)、不稳定性心绞痛患者26例(UAP组)、稳定性心绞痛患者20例(SAP组)及冠脉造影正常者26例(CON组)为研究对象,采用酶联免疫吸附法(ELISA)测定其血清IL-37、IL-6、IL-10和CRP的水平并分析其相关性。结果:1UAP组、AMI组血清IL-37水平均较对照组(CON组)显著增高(p0.05),而SAP组与CON组比较无明显差异(P0.05)。2冠心病患者的血清IL-37水平与其血清CRP(r=0.3,P0.05)、IL-6(r=0.4,P0.05)水平均存在显著正相关性,与IL-10水平无明显相关(P=0.16)。当排除SAP组患者后,冠心病患者的血清IL-37水平与CRP(r=0.3,P0.05)、IL-6(r=0.5,P0.05)、IL-10(r=0.2,P0.05)水平均显著相关。结论:急性冠脉综合症(ACS)患者的血清IL-37水平显著升高,并与IL-6、IL-10、CRP水平相关,可能参与了ACS发病过程中的炎症反应。     

肠道微生物与2型糖尿病患者T淋巴细胞亚群和炎症因子水平的相关性

探究肠道微生物与2型糖尿病（T2DM）患者T淋巴细胞亚群和炎症因子水平的相关性。

选择2019年4月到2022年4月我院收治的94例T2DM患者作为T2DM组,另选体检健康者81例作为对照组,采集所有受试者外周血及粪便样本,检测空腹血糖（FPG）、胰岛素抵抗指数（HOMA-IR）、空腹胰岛素（FINS）、炎症因子IL-6、hs-CRP水平、T淋巴细胞亚群（CD3⁺、CD4⁺、CD8⁺）水平和主要肠道菌群丰度,分析主要肠道菌群变化与CD4⁺/CD8⁺、IL-6、hs-CRP的关系。

治疗后T2DM组FBG、FINS、HOMA-IR、IL-6、hs-CRP水平均高于对照组（P＜0.05）,T2DM组CD3⁺、CD4⁺、CD8⁺及CD4⁺/CD8⁺比值均低于对照组（P＜0.05）。T2DM组肠道双歧杆菌、乳酸杆菌数量、B/E值低于对照组,大肠杆菌、肠球菌数量高于对照组（P＜0.05）。Pearson相关性分析显示：T2DM患者双歧杆菌、乳酸杆菌、B/E值与IL-6、hs-CRP水平呈负相关,与CD4⁺/CD8⁺比值呈正相关（P＜0.05）;大肠杆菌、肠球菌数量与IL-6、hs-CRP水平呈正相关,与CD4⁺/CD8⁺比值呈负相关（P＜0.05）。

T2DM患者肠道菌群失调、定植力受损,这可能与其能引发患者CD4⁺/CD8⁺水平降低和炎症因子IL-6、hs-CRP水平升高有关。

     

7例乳头状肾癌的动态增强CT表现并文献复习

目的:总结乳头状肾细胞癌(papillary renal cell carcinoma,PRCC)的动态增强CT表现,并对乳头状肾细胞癌的临床特点和鉴别诊断进行文献复习.方法:回顾性分析7例经病理证实的乳头状肾细胞癌的临床、手术及CT资料.结果:7例均为单发肿块,位于右肾5例,位于左肾2例,CT平扫表现为境界清楚或欠清楚的圆形或椭圆形结节或肿块,病变直径0.8 cm～3.5 cm,平均1.8cm,瘤体小时(≤ 3 cm)密度较均匀,无囊变和坏死;瘤体较大时(≥3 cm)常出现坏死、囊变.肿瘤强化程度较低,皮髓质期至实质期渐进性轻度增强,排泄期密度略降低.结论:乳头状肾细胞癌的CT表现有一定特征,多呈渐进性轻度强化,与其它类型肾癌不同,可为临床决定手术方式提供依据.     

Activity of a short course of interferon α for metastatic renal cell carcinoma — a phase-2 study

Twelve patients with metastatic renal cell carcinoma were entered into a phase-2 study of an 8-week course of interferon (INF) therapy. INF was given subcutaneously at a dose of 3 mu, three times per week. The patients were WHO performance status 0–2. A complete response was obtained in two patients (17% response rate), which has been maintained at 23 and 45 months. One of these patients presented with cranial and lung metastases and received cranial irradiation and decradron concurrent with INF. The toxicity of INF has been low. The optimal duration of INF therapy warrants further evaluation.     

自杀未遂老年抑郁症患者血清5-羟色胺水平、总胆固醇、C反应蛋白及白介素-6检测的临床意义

目的:探讨自杀未遂老年抑郁症患者血清5-羟色胺(5-HT)水平、总胆固醇(TC)、C反应蛋白(CRP)及白介素-6(IL-6)检测的临床意义。方法:选取2015年5月至2018年5月我院收治的首次住院的老年抑郁症患者155例,依据入院前2周内是否曾有过自杀行为将其分为自杀未遂组(n=75)和无自杀行为组(n=80)。比较两组患者的临床指标及血清5-HT、TC、CRP及IL-6水平;分析不同病情严重程度自杀未遂老年抑郁症患者血清5-HT、TC、CRP及IL-6水平;采用Pearson相关分析血清5-HT、TC、CRP及IL-6水平与汉密尔顿抑郁量表(HAMD)评分的相关性。结果:自杀未遂组HAMD评分高于无自杀行为组(P<0.05)。自杀未遂组血清5-HT及TC水平均低于无自杀行为组(P<0.05),自杀未遂组血清CRP及IL-6水平均高于无自杀行为组(P<0.05)。与轻度组比较,中度组、重度组患者血清5-HT及TC水平均明显降低,且重度组低于中度组(P<0.05);与轻度组比较,中度组和重度组患者血清CRP及IL-6水平均明显升高,且重度组高于中度组(P<0.05)。5-HT、TC与HAMD评分呈负相关(P<0.05);CRP、IL-6与HAMD评分呈正相关(P<0.05)。结论:自杀未遂老年抑郁症患者血清5-HT、TC水平降低,CRP、IL-6水平升高,检测血清5-HT、TC、CRP及IL-6有助于评价其病情严重程度及出现自杀行为的风险。     

四七汤联合帕罗西汀治疗脑卒中后抑郁患者的疗效评价及对血清ox-LDL、CRP、IL-6的影响

目的:探讨四七汤联合帕罗西汀治疗脑卒中后抑郁患者的疗效及对血清氧化低密度脂蛋白(ox-LDL)、C反应蛋白(CRP)、白细胞介素-6(IL-6)的影响。方法:选择我院2014年9月～2016年9月收治的86例脑卒中后抑郁患者,按治疗方式分为对照组与实验组,每组43例。对照组予以帕罗西汀治疗,实验组在对照组基础上加用四七汤治疗,两组均持续治疗8周。比较两组的临床疗效,治疗前后中医症候积分、血清ox-LDL、CRP、IL-6、汉密顿抑郁量表(HAMD)、纳维亚神经卒中量表评分(SNSS)的变化及不良反应的发生情况。结果:治疗后,实验组治疗总有效率显著高于对照组(P0.05);两组中医症候积分、血清ox-LDL、CRP、IL-6、HAMD、SNSS评分均显著下降,且实验组以上指标均明显低于对照组,差异有统计学意义(P0.05)。两组不良反应的发生率比较差异无统计学意义(P0.05)。结论:四七汤联合帕罗西汀治疗脑卒中后抑郁患者的疗效优于单用帕罗西汀者,能够有效改善患者的临床症状,可能与其更有效降低患者血清ox-LDL、CRP、IL-6水平有关。     

不同剂量瑞舒伐他汀对急性冠脉综合征患者炎症反应及预后的影响

目的:探讨不同剂量瑞舒伐他汀对急性冠脉综合征患者(ACS)炎症反应及预后的影响。方法:选择2014年5月至2015年10月间收治的120例ACS患者为研究对象,随机分为A、B、C三组,每组40例。所有患者先给予常规治疗,A组患者给予20mg/d普伐他汀治疗;B组患者给予10 mg/d瑞舒伐他汀;C组患者给予20 mg/d瑞舒伐他汀,3组均持续治疗6个月。比较3组患者治疗前后血脂、超敏C反应蛋白(hs-CRP)、肿瘤坏死因子-α(TNF-α)、白介素-6(IL-6)的水平;随访6个月心血管事件发生情况。结果:3组患者治疗后hs-CRP、TNF-α、IL-6水平均明显下降,且C组下降最明显,其次为B组,比较差异均有统计学意义(P0.05);治疗后血脂水平均的改善,且C组改善最明显,其次是B组,比较差异均有统计学意义(P0.05);随访6个月,C组心血管事件发生率为2.5%,远低于B组(10.0%)及A组(20.0%),差异具有显著性(P0.05)。结论:大剂量(20 mg/d)瑞舒伐他汀治疗ACS降脂、抗炎效果明显,预后相对较好,值得临床推广使用。     

化脓性牙髓炎患者血清CRP、IL-6、TNF-α及CD14水平的变化及其临床意义

摘要 目的：探讨化脓性牙髓炎患者血清C反应蛋白(CRP)、白介素-6(IL-6)、肿瘤坏死因子α(TNF-α)及白细胞分化抗原-14 (CD14)水平的变化及其临床意义。方法：选取2016年1月~2017年12月期间本院收治的110例化脓性牙髓炎患者为研究组,其中急性化脓性牙髓炎患者59例（急性组）,慢性化脓性牙髓炎患者51例（慢性组）,另选同期在我院进行健康检查的健康受试者50例为对照组。放射免疫分析法检测对照组体检时、研究组患者治疗前后血清CRP、IL-6、TNF-α及CD14水平。Pearson相关性分析化脓性牙髓炎患者治疗前血清CRP、IL-6、TNF-α与CD14水平的相关性。结果：研究组患者治疗前血清CRP、IL-6、TNF-α、CD14水平均高于对照组体检时各项指标水平,组间对比差异有统计学意义(P<0.05)。急性组患者治疗前后血清CRP、IL-6、TNF-α、CD14水平均高于慢性组患者(P<0.05);急性组、慢性组患者治疗后血清CRP、IL-6、TNF-α、CD14水平均低于治疗前(P<0.05)。Pearson相关性分析结果显示,化脓性牙髓炎患者治疗前血清CRP、IL-6、TNF-α与CD14水平均呈正相关(P<0.05)。结论：化脓性牙髓炎患者血清CRP、IL-6、TNF-α及CD14均呈现高表达,可能参与了化脓性牙髓炎的发生、发展过程,经牙髓根管治疗后上述指标水平均降低,且CD14与血清CRP、IL-6、TNF-?琢呈正相关,可能作为评估化脓性牙髓炎病情的重要指标。     

肾细胞癌淋巴结转移预测指标的Logistic回归分析

目的：研究肾细胞癌淋巴结转移的危险因素,并建立Logistic回归模型。方法：2002年2月-2010年10月我院手术治疗的肾细胞癌163例,对其临床病理资料进行单因素和多因素的Logistic回归分析。结果：淋巴结转移的发生率为20．9％（34／163）。单因素分析显示：肿瘤大小、临床分期、Fuhrman核分级和贫血与肾细胞癌淋巴结转移的风险有关（P〈0．05）;多因素分析显示：肿瘤大小、临床分期和Fuhrman核分级是RCC淋巴结转移独立的风险因素。结论：肾细胞癌淋巴结转移的风险与肿瘤大小、临床分期和Fuhrman核分级有关,Logistic回归模型对于判断预后、指导术后治疗及随访方案的制订具有重要作用。