腹水患者治疗前后的血清CA125水平测定
发表时间:2010-06-23 浏览次数:395次
作者:李熳 张志广 (天津医科大学第二附属医院消化内科,天津 300211)
摘 要 目的:测定腹水患者治疗前后的CA125浓度变化并比较良恶性腹水之间CA125水平差异。方法:60例患者测定治疗前后的CA125浓度,其中良性腹水38例,恶性腹水22例。结果:随腹水量的减退,CA125浓度有明显下降,良恶性腹水患者其CA125浓度相比无差异性。结论:血清CA125浓度与腹水良恶性无关,而与腹水存在有关,并随腹水量减少而下降。
关键词 CA125;良性腹水;恶性腹水
To Evaluate the Serum CA125 Level before and after Treatment of Ascites
LI Man,ZHANG Zhiguang
(Department of Digestive,the Second Hospital of Tianjin Medical University,Tianjin 300211,China)
Abstract Objective: To evaluate the serum CA125 levelsbefore and after treatment of ascites and to compare it in the benign with that in malignant ascites. Methods: To evaluate the serum CA125 before and after treatment in the 60 patients,including 38 benign patients and 22 malignant patients.Results: The level of CA125 manifest an obvious descent with the decrease of the volume of ascitesThere exists no difference in the serum CA125 level between benign and malignant cases. Conclusion: The serum CA125 level has no relation with the quality of ascites,rather, bears on the existence of ascites itself.
Key words CA125;benign ascites;malignant ascites
CA125是一个大分子糖蛋白,最初在卵巢癌细胞表面检测出来。它已经广泛应用于卵巢癌的初筛试验及预后监测。有文献报道[1-5],其在非妇科肿瘤致腹水患者中也有明显升高。本文比较良、恶性腹水患者在治疗前后的血清CA125变化情况,以进一步探讨其升高的原因和临床意义。
1 对象与方法
1.1 研究对象 选取我院2003年2月至2005年1月以腹水原因待查而收入院的患者60例(入院前均经B超检查证实有中等量腹水存在),男42例,女18例,平均年龄59岁。经入院详细诊治后,确诊为良性腹水38例,男28例,女10例,平均年龄56岁,其中肝硬化34例,结核性腹膜炎4例;恶性腹水22例,男14例,女8例,平均年龄64岁,并经妇科B超及CT除外妇科肿瘤,其中胃癌7例,肝癌9例,结肠癌6例。
1.2 方法 所有患者入院后均于隔日清晨采静脉血测定血清CA125浓度。入院后经过利尿、抽取腹水治疗,腹水均有不同程度减少,并经B超证实,10天后再次于清晨采静脉血测定血清CA125浓度。检测血清CA125应用化学发光法。
1.3 统计学处理 计量资料采用均数±标准差来表示,采用配对t检验。
2 结果
良性腹水组治疗前CA125浓度为312±165U/L,恶性腹水组治疗前CA125浓度为392±173U/L,两者相比差异无统计学意义(P>0.05)。60例腹水患者治疗前CA125浓度为341±171U/L,治疗后CA125浓度为230±149U/L,两者相比差异有统计学意义(P<001)。
3 讨论
CA125已经广泛应用于监测卵巢肿瘤的发生,是区分良恶性疾病的一种常用的非侵入性方法。但是,这种肿瘤相关抗原既非组织特异性也非肿瘤特异性,所以在多种良性和恶性疾病中均会出现高水平表达[6-12],特别在肝硬化患者中会出现假阳性结果。另有文献报道[1-5],在结核性腹水、心功能不全以及创伤造成腹水患者中CA125同样明显增加。本文34例肝硬化合并腹水患者均有CA125升高表现,且良、恶性腹水患者之间CA125数值比较无统计学差异,经过10天治疗后,测定CA125均可见不同程度下降,与治疗前相比有明显差异。
综上所述,可见各种原因的腹水均可导致血清CA125升高,而与腹水的良恶性无关。腹水是造成其升高的最常见相关因素。测定CA125对于证实腹水的存在具有高敏感性和较高的预测价值,且其水平与腹水的量相关。Collazos[12]等发现CA125在检测小量到中等量腹水的敏感性上强于体格检查,其水平升高可能代表腹水的存在。相反,CA125正常就可排除腹水的可能。在肝硬化患者中,特别是女性出现血清CA125异常增高,有时会误导诊断,怀疑合并妇科肿瘤,在明确了其与腹水存在高度相关后,则可避免了不必要的手术探查。恶性腹水多伴有其他更特异的肿瘤标记物异常。CA125单项异常增高并非是恶性腹水的标志。
此外,血清CA125升高可早于腹水的出现,故今后我们在临床上可动态监测血清CA125的浓度变化,以用于预测腹水的发生及作为监测腹水存在的常用指标。
参考文献
[1] Kumar KS, Lee WM. Chylous ascites with marked elevation of CA-125 in cirrhosis[J]. Am Gastroenterol,2000,95(11):3313
[2] Nagele H, Bahlo M, Klapdor R, Rodiger W. Tumor marker determination after orthotopic heart transplantation[J]Heart Lung Transplant,1999,18(10):957
[3] Oberbauer R, Banyai S, Schmidt A, et al. Serum tumor markers after renal transplantation[J ]. Transplantation,1996,62(10):1506.
[4] Mas MR, Comert B, Saglamkaya U, et al.CA-125 a new marker for diagnosis and follow-up of patients with tuberculous peritonitis[J]. Dig Liver Dis,2000,32(7):595.
[5] Simsek H, Savas MC, Kadayifci A, et al. Elevated serum CA 125 concentration in patients with tuberculous peritonitis:a case-control study[J]. Am Gastroenterol,1997,92(7):1174.
[6] Ozasa H,Noda Y,Mori T .Progesterone increase serum CA125 in endometriosis[J ]. Fertil Steril,1987,47(4):699.
[7] Halila H, Stenman UH, Seppala M.Ovarian cancer antigen CA125 in pelvic inflammatory diease and pregnancy[J ].Cancer, 1986,57(7):1327.
[8] Jager W,Diedrich K,Wildt L.Elevated levels of CA125 in serum of patients suffering from ovarian hyperstimulation syndrome[J ].Fertil Steril,1987,48(4):675
[9] Young RC, Knapp RC, Perez CA .Cancer of the ovary .In :De Vita VT Jr, Hellman S,Rosenberg SA, eds.Cancer :Principles and practice of oncology[M].Philadelphia:JB Lippincott,1982:884
[10] Niloff JM,Klug TL,Schaetzl E ,et al.Elevation of serum CA125 in carcinomas of the fallopian tube,endometrium and endocervix.Am [J ]Obstet Gynecol,1984,148(8):1057
[11] Molina R ,Filella X,Bruix J, et al.Cancer antigen CA125 in serum and ascites fluid of patients with liver diseases[J].Clin Chem,1991,37(8):1379
[12] Collazos J,Genolla J,Ruibal A.CA125 levels in patients with non-neoplastic liver disease.A clinical and laboratory study.Scan [J ]Clin Lab Invest, 1992,52(3):201