BST-2在pSS患者唇腺、外周血淋巴细胞中的表达及增殖作用

目的探讨原发性舍格伦综合征(pSS)患者唇腺及外周血B淋巴细胞中骨髓基质细胞抗原2(BST-2)的表达情况及其在pSS中的作用。方法将2017年9月至2018年3月在内蒙古自治区人民医院接受治疗的40例pSS患者作为pSS组;将同期体检的30例健康者作为对照组。采用实时荧光定量PCR检测纳入研究者的唇腺组织及外周血B淋巴细胞中BST-2的表达水平。免疫组织化学法检测唇腺组织内BST-2的表达情况,并分析BST-2对淋巴细胞增殖的影响。结果pSS组的外周血B淋巴细胞和唇腺组织中BST-2的表达水平明显高于对照组(P<0.05);pSS患者唇腺组织中浸润的局灶性淋巴细胞和少数周围导管上皮内BST-2表达量较高,而在对照组中仅在导管上皮细胞内存在散在性少量表达。连续切片的pSS患者唇腺组织染色显示,pSS患者的唇腺组织内CD19染色阳性细胞和BST-2阳性细胞基本一致。结论pSS患者唇腺组织和外周血B淋巴细胞BST-2水平明显增高;BST-2通过对腺体内B淋巴细胞的浸润及增殖,参与pSS的发病及进展。     

肺癌患者血清癌胚抗原和Ki-67对预测预后的作用

目的探讨血清癌胚抗原(carcino-embryonic antigen, CEA)、Ki-67对不同病理类型肺癌患者无进展生存期(progression-free survival, PFS)的预测作用。方法 100例肺癌患者,均行血清CEA和Ki-67水平检测,根据中位CEA水平分为CEA高表达(CEA>4.215μg/L)者51例和CEA低表达(CEA≤4.215μg/L)者49例,根据Ki-67表达情况分为Ki-67阳性表达(Ki-67≥75%)者37例和Ki-67阴性表达(Ki-67<75%)者63例,分析CEA高表达、Ki-67阳性患者临床和病理指标的关系,并采用Kaplan-Meier法进行生存分析,比较CEA高表达者与低表达者及Ki-67阳性与阴性者PFS。结果 CEA高表达和Ki-67阳性患者在病理类型上差异有统计学意义(P<0.05),肺腺癌患者CEA高表达发生率最高,小细胞肺癌Ki-67阳性发生率最高,CEA高表达及Ki-67阳性患者在年龄、性别比例、有吸烟史比率、分化程度、淋巴结转移比率、TNM分期上差异无统计学意义(P>0.05);CEA高表达患者PFS(22.5个月)与CEA低表达患者(20.9个月)比较差异无统计学意义(P>0.05),Ki-67阳性患者PFS(20.1个月)低于Ki-67阴性患者(22.8个月)(P<0.05)。结论 CEA对肺癌患者的PFS无预测作用,Ki-67对肺癌患者PFS有预测作用,Ki-67阳性患者生存期短。     

卵巢子宫内膜样腺癌组织中细胞角蛋白、CA125、抑制素α的表达及临床意义

目的:观察卵巢子宫内膜样腺癌组织中细胞角蛋白(CKpan)、糖类抗原125(CA125)、抑制素α(inhibinα)表达水平,探究其临床意义。方法:选取2012年1月至2015年1月河南科技大学第一附属医院收治的卵巢子宫内膜样腺癌患者73例,通过手术取其卵巢子宫内膜样腺癌组织。另选择73例因宫颈癌切除卵巢且无卵巢转移患者的正常卵巢组织作为对照。采用免疫组织化学染色法检测CKpan,CA125和inhibinα的表达水平,分析CKpan,CA125,inhibinα与卵巢子宫内膜样腺癌临床病理特征及预后关系。结果:正常卵巢组织、子宫内膜异位症卵巢组织、卵巢子宫内膜样腺癌组织中CKpan和CA125表达率依次升高,两两比较差异有统计学意义(P<0.05);正常卵巢组织、子宫内膜异位症卵巢组织、卵巢子宫内膜样腺癌组织中inhibinα表达率依次降低,两两比较差异有统计学意义(P<0.05);CKpan与CA125蛋白表达呈正相关(r=0.476,P<0.05),CKpan与inhibinα蛋白表达呈负相关(r=-0.493,P<0.05),CA125与inhibinα蛋白表达呈负相关(r=-0.473,P<0.05)。CKpan,CA125,inhibinα蛋白表达均与分化程度、肌层浸润、FIGO分期、淋巴结是否转移有关(P<0.05);CKpan,CA125高表达组3年存活率、中位生存时间均显著低于低表达组(P<0.05);inhibinα低表达组3年存活率、中位生存时间显著低于高表达组(P<0.05)。低分化、FIGO分期III^IV、淋巴结转移、CKpan高表达、CA125高表达是影响卵巢子宫内膜样腺癌患者预后的独立危险因素(均P<0.05);inhibinα高表达是独立保护因素(P<0.05)。结论:CKpan,CA125在卵巢子宫内膜样腺癌组织中高表达率高,inhibinα高表达率低,三者与卵巢子宫内膜样腺癌患者分化程度、肌层浸润、FIGO分期、淋巴结转移等临床病理参数及预后密切相关,可能参与卵巢子宫内膜样腺癌发生发展。     

结直肠癌组织NDRG2和CA19-9表达水平与预后的相关性分析

目的分析结直肠癌(CRC)组织N-Myc下游调节基因2(NDRG2)和糖链抗原19-9(CA19-9)表达与患者预后的相关性。方法选择2013年5月至2014年5月本院接收的66例CRC患者为研究对象,用免疫组化法测定患者术中所得肿瘤组织和癌旁正常组织标本中NDRG2和CA19-9的表达情况,并分析其与患者病理特征和预后的关系。结果癌变组织NDRG2阳性表达率显著低于癌旁正常组织,CA19-9阳性表达率显著高于癌旁正常组织(P<0.05)。肿瘤病灶Dukes分期晚、分化程度低、淋巴或肝转移者NDRG2阳性占比均低于Dukes分期早、分化程度中高、非淋巴或肝转移者,CA19-9阳性占比高于Dukes分期早、分化程度中高、非淋巴或肝转移者(P<0.05)。NDRG2阳性者和CA19-9阴性者累计生存时间明显长于NDRG2阴性者和CA19-9阳性者(P<0.05)。结论 CRC瘤体中NDRG2低表达,CA19-9高表达,且其表达与患者病理分期、分化程度、淋巴或肝脏是否转移有关。     

False tumor-positive lymph nodes in radioimmunodiagnosis and radioimmunoguided surgery: Etiologic mechanisms

We investigated the causes of false-positive (nontumor cell) focal uptake in radioimmunodiagnosis (RAID) and false-positive high counts in radioimmunoguided surgery (RIGS). Tissue blocks of two such RAID cases were recut and examined by immunohistochemistry (IH) (group 1). Lymph nodes in the drainage area of 14 colon cancers selected because of tumor-positive draining nodes were examined similarly (group 2). The lymph nodes in group 1 showed nontumor cell germinal center (GC) and rare macrophage (Mϕ positivity with monoclonal antibody (mAb) CC49 to tumor antigen (Ag) TAG-72, the same Ag to which the mAb B72.3, used for the RAID studies, was directed. In group 2, CC49 staining was observed in the colon cancers, in noncellular tumor Ag in lymphatic channels, and in the GC of draining nodes in a pattern similar to that of follicular dendritic cells (FDC). An In-111-mAb/tumor Ag (TAG-72 or CEA) complex can result in false-positive RAID/RIGS studies by In-111 retained in the lysosomes of lymph node Mϕ, following attachment of the mAb to the Ag, and their catabolism in the Mϕ. An 1-125-mAb to either tumor Ag could lead to false-positive RIGS studies due to its attachment to the Ag portion of ag/ab complexes affixed to the FDC in the GC of the lymph nodes draining a tumor. © 1996 Wiley-Liss, Inc.     

Correlation between CD34 expression and chromosomal abnormalities but not clinical outcome in acute myeloid leukemia

The hemopoletic stem cell marker CD34 has been reported to be a useful predictor of treatment outcome in acute myeloid leukemia (AML). Previous data suggested that CD34 expression may be associated with other poor prognosis factors in AML such as undifferentiated leukemia, secondary AML (SAML), and clonal abnormalities involving chromosome 5 and 7. In order to analyze the correlations between the clinicopathologic features, cytogenetic and CD34 expression in AML, we retrospectively investigated 99 patients with newly diagnosed AML: 85 with de novo disease and 14 with secondary AML (SAML). Eighty-six patients who received the same induction chemotherapy were available for clinical outcome. Defining a case as positive when ≥ 20% of bone marrow cells collected at diagnosis expressed the CD34 antigen, forty-five patients were included in the CD34 positive group. Ninety patients had adequate cytogenetic analysis. Thirty-two patients (72%) with CD34 positive AML exhibited an abnormal karyotype whereas 15 patients (28%) with CD34 negative AML had abnormal metaphases (P < 0.01). Monosomy 7/7q- or monosomy 5/5q- occurred in 10 patients and 8 of them expressed the CD34 antigen (P < 0.05). All patients with t(8;21) which is considered as a favorable factor in AML had levels of CD34 ≥ 20% (P < 0.05). We did not find any association between CD34 expression and attainment of complete remission, overall survival, or disease-free survival. In conclusion, the variations of CD34 expression in AML are correlated with cytogenetic abnormalities associated both with poor and favorable outcome. The evaluation of the correlations between CD34 antigen and clinical outcome in AML should take into account the results of pretreatment karyotype. © 1996 Wiley-Liss, Inc.     

POTENTIAL FALSE-POSITIVE RESULTS WITH ANTIGEN ENHANCEMENT FOR IMMUNOHISTOCHEMISTRY OF THE p53 GENE PRODUCT IN COLORECTAL NEOPLASMS

Aberrant crypt foci (ACF) are putative precursor lesions of colon cancer, recently identified on the methylene blue-stained mucosal surface of human colon. No mutations in K- ras or p53 genes were found by non-radioactive single-strand conformation polymorphism analysis in 14 ACF collected from five patients. Using the more sensitive method of allele-specific polymerase chain reaction (PCR) for K- ras , 8 of 14 ACF were found to contain K- ras mutations, suggesting that mutated cells are present in minute clones in ACF. No dysplasia was observed in any of the ACF containing a mutated clone. The presence of K- ras mutations in ACF suggests that these lesions occur at a very early stage in human colorectal carcinogenesis.     

Red blood cell distribution width and serum CA-125 level as prognostic markers in acute exacerbation of chronic obstructive pulmonary disease

ObjectiveAcute exacerbation of chronic obstructive pulmonary disease (AECOPD) is a primary cause of hospitalization and death in COPD. Serum CA-125 and red blood cell distribution width (RDW) are related to AECOPD. We investigated correlations between serum markers and AECOPD.MethodsIn total, 132 patients with AECOPD were included from January 2017 to December 2019. Participants were followed for 1 year. Patients were assigned to the poor prognosis (n = 40) or good prognosis (n = 92) group. We collected serum samples and general clinical information and conducted routine blood tests. We used logistic regression, receiver operating characteristic (ROC), and area under the ROC curve (AUC) analyses to assess differences between groups.ResultsWe found significant differences between groups (odds ratio, 95% confidence interval) for age (1.046, 1.005–1.09), RDW (2.012, 1.339–3.023), and cancer antigen 125 (CA-125; 1.022, 1.006–1.039); these remained risk factors for AECOPD prognosis in multivariate analyses. RDW and CA-125 in combination was significant in ROC curve analysis. The AUC of RDW, CA-125, and these combined were 0.691, 0.779, and 0.772, respectively. Patients with RDW >12.75% and CA-125 >15.65 U/mL were predicted to have poor prognosis.ConclusionsWe found that RDW and CA-125 are potential prognostic indicators for AECOPD.     

ED2-positive perivascular cells act as neuronophages during delayed neuronal loss in the facial nucleus of the rat

Injection of Fluoro-Gold (FG) into the whisker pad of rats yields a stable retrograde labeling of facial motoneurons. After removal of 10 mm from the facial nerve the microglia phagocytose the FG-prelabeled dead neurons and assume the label. A subsequent brightfield immunostaining of the sections with HRP-DAB as end-product fully quenches the fluorescence of FG from all specifically stained structures (immunoquenching). Combining FG-labeling of neuronophages with immunoquenching, we recently described a population of enigmatic fluorescent cells, found in immediate vicinity to the motoneurons after the general neuronofugal migration of microglia. As the fluorescence of these cells was not quenched after a triple immunostaining with anti neuron-specific enolase, anti-GFAP, and OX-42 (quenching all fluorescence from neurons and glia), they seemed to represent a new, immunologically not identified neuronophage. Now we have further characterized this cell type. Following triple immunostaining, we tested a broad panel of mabs (OX-33, OX-19, OX-18, OX-6, R73, ED1, and ED2) to stain, quench fluorescence, and thus immunotype the unknown phagocytes. Only the mab ED2, the classical marker for perivascular cells, specifically stained the small round neuronophages. This surprising migration of perivascular cells toward decaying neurons was additionally tested and confirmed by intracerebroventricular application of FG prior to resection of the facial nerve Providing evidence for neuronophagia by ED2-positive cells, our results strongly support the hypothesis that the latter are the APC (antigen presenting cells) of the CNS. © 1996 Wiley-Liss, Inc.