目的探讨子宫颈小细胞癌(small cell carcinoma of the cervix,SCCC)的临床病理学特征、免疫表型、与人乳头瘤病毒(human papilloma virus,HPV)的关系及预后。方法采用免疫组化En Vision法对35例SCCC进行检测及PCR法进行HPV检测并分型...目的探讨子宫颈小细胞癌(small cell carcinoma of the cervix,SCCC)的临床病理学特征、免疫表型、与人乳头瘤病毒(human papilloma virus,HPV)的关系及预后。方法采用免疫组化En Vision法对35例SCCC进行检测及PCR法进行HPV检测并分型。结果患者年龄29~76岁,中位年龄47岁。临床表现主要为不规则阴道出血。组织学上28例为单纯型小细胞癌,7例合并其他类型癌或癌前病变。镜下见小而深染的圆形或短梭形肿瘤细胞,呈巢状或条索状排列,胞质稀少,核仁不明显,坏死及核分裂象多见。免疫表型:神经内分泌标志物NSE(30/35)、CD56(27/35)、Syn(28/35)、CgA(20/35)阳性;其他标志物p16(29/35)、PAX-8(3/35)、TTF-1(15/35)及p63(12/35)阳性;Ki-67增殖指数均>50%。27例HPV检测结果为阳性,8例为阴性。29例随访时间3个月~6年,4例复发或转移,8例死亡。结论 SCCC组织学形态与其他部位小细胞癌类似,其发病与高危型HPV感染相关;常表达p16及TTF-1,PAX-8多呈阴性;预后差。展开更多
Changes in the metabolites of table grapes(Vitis vinifera) reportedly occur during postharvest senescence. The aim of this study was to determine the metabolomic differences in postharvest table grapes(‘Red Globe’) ...Changes in the metabolites of table grapes(Vitis vinifera) reportedly occur during postharvest senescence. The aim of this study was to determine the metabolomic differences in postharvest table grapes(‘Red Globe’) after being subjected to different senescence periods. To this end, we used widely targeted metabolomics based on ultra-performance liquid chromatography and tandem mass spectrometry. A total of 135 differential metabolites were identified. During postharvest senescence, the levels of most differential flavonoids(e.g., pelargonidin 3-O-glucoside, quercetin-3-O-glucoside, and cyanidin 3-O-glucoside) and L-aspartic acid decreased, while the levels of phenolic acids(e.g., trans-4-hydroxycinnamic acid methyl ester) and pantothenol increased. During early and late senescence, the levels of most differential lipids, especially LysoPC, as well as those of nucleotides and their derivatives, such as uridine, decreased and increased, respectively. Collectively, the findings of this study provide fundamental insights into the reasonable control of table grape fruit postharvest senescence and lay a solid foundation for further research.展开更多
为了了解屠宰场大肠杆菌O26污染情况,参考美国农业部(united states department of agriculture,USDA)的检测方法,对样品进行选择性增菌,经免疫磁珠富集、选择性显色培养基mRainbow Agar分离纯化后,挑选可疑菌株采用PCR方法鉴定O抗原,...为了了解屠宰场大肠杆菌O26污染情况,参考美国农业部(united states department of agriculture,USDA)的检测方法,对样品进行选择性增菌,经免疫磁珠富集、选择性显色培养基mRainbow Agar分离纯化后,挑选可疑菌株采用PCR方法鉴定O抗原,进一步采用血清凝集试验进行验证,并对确认的阳性菌株采用多重PCR方法进行毒力基因(stx1、stx2、eae、hly)检测。结果表明,采集的120份样品中共分离到1株大肠杆菌O26,但上述4种毒力基因均为阴性。该屠宰场存在大肠杆菌O26的污染,但分离出的大肠杆菌O26没有携带毒力基因。展开更多
文摘目的探讨子宫颈小细胞癌(small cell carcinoma of the cervix,SCCC)的临床病理学特征、免疫表型、与人乳头瘤病毒(human papilloma virus,HPV)的关系及预后。方法采用免疫组化En Vision法对35例SCCC进行检测及PCR法进行HPV检测并分型。结果患者年龄29~76岁,中位年龄47岁。临床表现主要为不规则阴道出血。组织学上28例为单纯型小细胞癌,7例合并其他类型癌或癌前病变。镜下见小而深染的圆形或短梭形肿瘤细胞,呈巢状或条索状排列,胞质稀少,核仁不明显,坏死及核分裂象多见。免疫表型:神经内分泌标志物NSE(30/35)、CD56(27/35)、Syn(28/35)、CgA(20/35)阳性;其他标志物p16(29/35)、PAX-8(3/35)、TTF-1(15/35)及p63(12/35)阳性;Ki-67增殖指数均>50%。27例HPV检测结果为阳性,8例为阴性。29例随访时间3个月~6年,4例复发或转移,8例死亡。结论 SCCC组织学形态与其他部位小细胞癌类似,其发病与高危型HPV感染相关;常表达p16及TTF-1,PAX-8多呈阴性;预后差。
基金supported by the Natural Science Foundation of China(31801833 and 31801811)the Innovation Capability Support Programs of Shaanxi Province,China(2020KJXX-035)+2 种基金the China Postdoctoral Science Foundation(2019M653771 and 2019T120953)the Fundamental Research Funds for the Central Universities of China(2452019016)the China Agriculture Research System of MOF and MARA(CARS-29-zp-6)。
文摘Changes in the metabolites of table grapes(Vitis vinifera) reportedly occur during postharvest senescence. The aim of this study was to determine the metabolomic differences in postharvest table grapes(‘Red Globe’) after being subjected to different senescence periods. To this end, we used widely targeted metabolomics based on ultra-performance liquid chromatography and tandem mass spectrometry. A total of 135 differential metabolites were identified. During postharvest senescence, the levels of most differential flavonoids(e.g., pelargonidin 3-O-glucoside, quercetin-3-O-glucoside, and cyanidin 3-O-glucoside) and L-aspartic acid decreased, while the levels of phenolic acids(e.g., trans-4-hydroxycinnamic acid methyl ester) and pantothenol increased. During early and late senescence, the levels of most differential lipids, especially LysoPC, as well as those of nucleotides and their derivatives, such as uridine, decreased and increased, respectively. Collectively, the findings of this study provide fundamental insights into the reasonable control of table grape fruit postharvest senescence and lay a solid foundation for further research.
文摘为了了解屠宰场大肠杆菌O26污染情况,参考美国农业部(united states department of agriculture,USDA)的检测方法,对样品进行选择性增菌,经免疫磁珠富集、选择性显色培养基mRainbow Agar分离纯化后,挑选可疑菌株采用PCR方法鉴定O抗原,进一步采用血清凝集试验进行验证,并对确认的阳性菌株采用多重PCR方法进行毒力基因(stx1、stx2、eae、hly)检测。结果表明,采集的120份样品中共分离到1株大肠杆菌O26,但上述4种毒力基因均为阴性。该屠宰场存在大肠杆菌O26的污染,但分离出的大肠杆菌O26没有携带毒力基因。