Background: Differential diagnosis of follicular thyroid carcinoma (FTC) from follicular thyroid adenoma (FTA) is often difficult since presence or absence of capsular/vascular invasion can not be determined by preope...Background: Differential diagnosis of follicular thyroid carcinoma (FTC) from follicular thyroid adenoma (FTA) is often difficult since presence or absence of capsular/vascular invasion can not be determined by preoperative fine needle aspiration cytology, and may not be judged unanimously on permanent sections even among experienced pathologists. Determination of molecular-genetic factors such as trefoil factor 3 (TFF3) mRNA in the follicular thyroid tumors may be useful aid to improve the accuracy of diagnosis, though it is considered to be unstable and relatively low concentrated genetic substance. Purpose of our study is to investigate expression level of TFF3 mRNA of thyroid follicular tumors using formalin-fixed, paraffin-embedded (FFPE) tissue. Methods: Study population included FFPE sections from 19 FTC cases, 20 FTA cases, 11 adenomatous goiter (G) cases and 12 samples of normal thyroid tissue (N) adjacent to thyroid tumors. RNeasy FFPE kit was used for extraction of total RNA. Purification and concentration values were determined by spectrophotometer. Extracted RNA was used for cDNA synthesis in reverse transcription. Synthesized cDNA subsequently proceeded for relative quantification of TFF3 mRNA by RT-qPCR using TFF3 primers. Glyceroldehyde-3-phosphate dehydrogenase (GAPDH) and hypoxanthin phosphorobosyltransferase1 (HPRT1) were used as control genes. The mean and standard deviation of TFF3 mRNA expression level were analyzed by software Multiplate RQ. Results: Extraction by the FFPE kit yielded high concentration of RNA in all cases. Purification values were 1.8 in average. Concentration values were significantly higher in FTC and FTA relative to G and N tissues, possibly due to high density of thyrocytes in the samples. Relative quantification of TFF3 mRNA expression level showed broad ranges both in FTC and FTA, while the analyses in G and N tissues indicated narrow ranges. Conclusion: FFPE tissues from thyroid follicular tumors can be used for measurement of unstable and low concentrated genetic substances such as TFF3 mRNA. Its diagnostic value yet remains to be determined.展开更多
目的:分析三叶因子3(TFF3)在不同胃黏膜病变中的表达及其与间质微血管密度(MVD)值的关系,探讨其在胃癌、癌前病变及胃腺瘤发生、发展中的作用.方法:应用免疫组织化学PV6000法检测20例正常胃黏膜、20例胃腺瘤、20例萎缩性胃炎伴肠化生、2...目的:分析三叶因子3(TFF3)在不同胃黏膜病变中的表达及其与间质微血管密度(MVD)值的关系,探讨其在胃癌、癌前病变及胃腺瘤发生、发展中的作用.方法:应用免疫组织化学PV6000法检测20例正常胃黏膜、20例胃腺瘤、20例萎缩性胃炎伴肠化生、20例不典型增生、40例胃癌组织中TFF3的表达,同时检测MVD值,以抗CD34标记.结果:TFF3在胃腺瘤、萎缩性胃炎伴肠化生、不典型增生和胃癌各组表达均高于正常组(50.0%,65.0%,70.0%,57.5% vs 5.0%,均P<0.01).胃癌MVD值高于正常胃黏膜、胃腺瘤、萎缩性胃炎伴肠化生和不典型增生(30.65±6.04 vs 14.87±3.06,22.33±3.78,23.16±3.20,25.22±4.66,均P<0.01),各组MVD值均高于正常胃黏膜组(均P<0.01).TFF3表达和MVD值与胃癌淋巴结转移和分期有关(均P<0.05),MVD值还与胃癌浸润深度有关(P<0.05).TFF3阳性表达组的MVD值明显高于TFF3阴性组(34.53±4.45 vs 25.39±3.25,P<0.01).结论:TFF3可能是胃黏膜癌变过程中的早期分子事件,在胃黏膜癌变和癌变后的恶性演进过程中起作用,对胃癌早期诊断和预测胃癌发生转移可能具有重要的提示作用.展开更多
目的:研究中药肠愈宁对溃疡性结肠炎(UC)大鼠结肠黏膜黏蛋白-2(MUC2)、肠三叶因子(TFF3)基因表达的影响,探讨其治疗UC的可能作用机制。方法:SD雄性大鼠72只,随机分为空白对照组、模型对照组、西药对照组(美沙拉嗪)和肠愈宁低、中、高剂...目的:研究中药肠愈宁对溃疡性结肠炎(UC)大鼠结肠黏膜黏蛋白-2(MUC2)、肠三叶因子(TFF3)基因表达的影响,探讨其治疗UC的可能作用机制。方法:SD雄性大鼠72只,随机分为空白对照组、模型对照组、西药对照组(美沙拉嗪)和肠愈宁低、中、高剂量组,每组12只。除空白对照组外,其余各组大鼠采用2,4,6-三硝基苯磺酸(TNBS)/乙醇复合法诱导UC形成,造模成功后分别给予相应药物或蒸馏水连续灌胃20d。光镜下观察各组大鼠结肠黏膜病理改变,Real Time PCR方法检测UC大鼠结肠黏膜MUC2、TFF3 m RNA的表达情况。结果:模型对照组大鼠结肠黏膜MUC2、TFF3 m RNA相对表达量高于空白对照组,但二者间无统计学差异(P>0.05)。与模型对照组比较,各给药组大鼠除肠愈宁低剂量组外,MUC2、TFF3m RNA相对表达量均有明显升高(P<0.05),尤以肠愈宁中剂量组MUC2、TFF3 m RNA相对表达量升高最为明显(P<0.05)。结论:肠愈宁能有效改善UC大鼠结肠黏膜病理状态,其可能是通过上调MUC2、TFF3m RNA的表达来实现的。展开更多
文摘Background: Differential diagnosis of follicular thyroid carcinoma (FTC) from follicular thyroid adenoma (FTA) is often difficult since presence or absence of capsular/vascular invasion can not be determined by preoperative fine needle aspiration cytology, and may not be judged unanimously on permanent sections even among experienced pathologists. Determination of molecular-genetic factors such as trefoil factor 3 (TFF3) mRNA in the follicular thyroid tumors may be useful aid to improve the accuracy of diagnosis, though it is considered to be unstable and relatively low concentrated genetic substance. Purpose of our study is to investigate expression level of TFF3 mRNA of thyroid follicular tumors using formalin-fixed, paraffin-embedded (FFPE) tissue. Methods: Study population included FFPE sections from 19 FTC cases, 20 FTA cases, 11 adenomatous goiter (G) cases and 12 samples of normal thyroid tissue (N) adjacent to thyroid tumors. RNeasy FFPE kit was used for extraction of total RNA. Purification and concentration values were determined by spectrophotometer. Extracted RNA was used for cDNA synthesis in reverse transcription. Synthesized cDNA subsequently proceeded for relative quantification of TFF3 mRNA by RT-qPCR using TFF3 primers. Glyceroldehyde-3-phosphate dehydrogenase (GAPDH) and hypoxanthin phosphorobosyltransferase1 (HPRT1) were used as control genes. The mean and standard deviation of TFF3 mRNA expression level were analyzed by software Multiplate RQ. Results: Extraction by the FFPE kit yielded high concentration of RNA in all cases. Purification values were 1.8 in average. Concentration values were significantly higher in FTC and FTA relative to G and N tissues, possibly due to high density of thyrocytes in the samples. Relative quantification of TFF3 mRNA expression level showed broad ranges both in FTC and FTA, while the analyses in G and N tissues indicated narrow ranges. Conclusion: FFPE tissues from thyroid follicular tumors can be used for measurement of unstable and low concentrated genetic substances such as TFF3 mRNA. Its diagnostic value yet remains to be determined.
文摘目的:分析三叶因子3(TFF3)在不同胃黏膜病变中的表达及其与间质微血管密度(MVD)值的关系,探讨其在胃癌、癌前病变及胃腺瘤发生、发展中的作用.方法:应用免疫组织化学PV6000法检测20例正常胃黏膜、20例胃腺瘤、20例萎缩性胃炎伴肠化生、20例不典型增生、40例胃癌组织中TFF3的表达,同时检测MVD值,以抗CD34标记.结果:TFF3在胃腺瘤、萎缩性胃炎伴肠化生、不典型增生和胃癌各组表达均高于正常组(50.0%,65.0%,70.0%,57.5% vs 5.0%,均P<0.01).胃癌MVD值高于正常胃黏膜、胃腺瘤、萎缩性胃炎伴肠化生和不典型增生(30.65±6.04 vs 14.87±3.06,22.33±3.78,23.16±3.20,25.22±4.66,均P<0.01),各组MVD值均高于正常胃黏膜组(均P<0.01).TFF3表达和MVD值与胃癌淋巴结转移和分期有关(均P<0.05),MVD值还与胃癌浸润深度有关(P<0.05).TFF3阳性表达组的MVD值明显高于TFF3阴性组(34.53±4.45 vs 25.39±3.25,P<0.01).结论:TFF3可能是胃黏膜癌变过程中的早期分子事件,在胃黏膜癌变和癌变后的恶性演进过程中起作用,对胃癌早期诊断和预测胃癌发生转移可能具有重要的提示作用.
文摘目的:研究中药肠愈宁对溃疡性结肠炎(UC)大鼠结肠黏膜黏蛋白-2(MUC2)、肠三叶因子(TFF3)基因表达的影响,探讨其治疗UC的可能作用机制。方法:SD雄性大鼠72只,随机分为空白对照组、模型对照组、西药对照组(美沙拉嗪)和肠愈宁低、中、高剂量组,每组12只。除空白对照组外,其余各组大鼠采用2,4,6-三硝基苯磺酸(TNBS)/乙醇复合法诱导UC形成,造模成功后分别给予相应药物或蒸馏水连续灌胃20d。光镜下观察各组大鼠结肠黏膜病理改变,Real Time PCR方法检测UC大鼠结肠黏膜MUC2、TFF3 m RNA的表达情况。结果:模型对照组大鼠结肠黏膜MUC2、TFF3 m RNA相对表达量高于空白对照组,但二者间无统计学差异(P>0.05)。与模型对照组比较,各给药组大鼠除肠愈宁低剂量组外,MUC2、TFF3m RNA相对表达量均有明显升高(P<0.05),尤以肠愈宁中剂量组MUC2、TFF3 m RNA相对表达量升高最为明显(P<0.05)。结论:肠愈宁能有效改善UC大鼠结肠黏膜病理状态,其可能是通过上调MUC2、TFF3m RNA的表达来实现的。
