核仁组成区嗜银蛋白的检测及其在消化道肿瘤研究中的应用

核仁组成区(N0R))是位于某些染色体上特殊部位的核糖体基因,与核仁形成密切相关。应用嗜银染色法,可在石蜡切片上显示细胞染色体上的NOR。Ag-NOR数目和分布与核仁内rDNA活动、NOR染色体数目、细胞的倍体数以及所处的细胞周期中的阶段有关,故可(?)研究细胞增生和分化的基因调控提供信息。与前列腺癌、乳腺癌等恶性肿瘤一样,胃癌、食管癌和肠道肿瘤的Ag-NOR计数显著高于正常对照粘膜,而结肠腺瘤的Ag-NOR计数则处于两者之间。因此Ag-NOR技术有助于肿瘤良恶性的鉴别诊断,可作为一项重要的辅助性定量指标。     

淋巴细胞核仁组成区嗜银蛋白测定在肿瘤诊断中的意义

目的　探讨外周血 T淋巴细胞核仁组成区嗜银蛋白 (Ag- NORs)检测在肿瘤诊断中的意义。方法　对 110 0例健康查体者 (对照组 ) 336例经病理证实的肿瘤患者 (肿瘤组 )、 4 18例非肿瘤患者 (良性病组 )分别取静脉血 0 .5 ml,经培养、制片、银染、图像分析 4个步骤 ,以 T淋巴细胞核仁嗜银面积与细胞核面积比值 (I.S%值 )作为 Ag- NORs的检测指标。结果　对照组、良性病组及肿瘤组外周血 T淋巴细胞 Ag- NORs结果分别为(7.2 3± 0 .4 5 ) %、 (7.0 3± 0 .4 5 ) %和 (4 .5 2± 0 .2 5 ) %经统计学分析 ,对照组、良性病组分别与肿瘤组有显著差异 (P<0 .0 5 ) ;良性病组与对照组无明显差异 (P>0 .0 5 )。结论　外周血 T淋巴细胞 Ag- NORs测定对肿瘤的诊断具有重要意义     

幽门螺杆菌感染与胃窦粘膜核仁组成区嗜银蛋白的关系

为探讨幽门螺杆菌(HP)感染在胃癌发病中的可能机制,应用银染技术定量观察34例HP阳性及12例HP阴性胃窦粘膜核仁组成区嗜银蛋白(AgNORs)的变化,并对HP阳性者进行抗HP治疗.结果显示HP感染时胃粘膜AgNORs计数显著增高(1.86±0.16与1.54±0.13,P<0.01),且AgNORs计数与胃粘膜炎症程度正相关(r=0.5330,P<0.01),但与HP菌量无相关(r=0.2314,P>0.05);根除HP后,胃粘膜AgNORs计数从1.94±0.01降至1.35±0.14(P<0.01),而HP未根除组AgNORs计数无显著性变化(1.82±0.14与1.73±0.17,P>0.05).提示HP感染增加胃粘膜增殖活性,可能在胃癌发生过程中起重要作用,而根除HP可降低细胞增殖活性,对预防胃癌发生可能具有重要意义.     

核仁组成区相关嗜银蛋白对白血病分型诊断价值的探讨

本文选用骨髓片４４６例、血片１７４例，其中急性白血病２１２例，慢性白血病３７例，其它白血病２２例，骨髓增生异常综合征５２例，非白血病８０例，正常人４３例。应用ＰＬＯＴＯＮ及本室改良法，检测核仁组成区相关嗜银蛋白（ＡｇＮＯＲｓ），ＡｇＮＯＲｓ颗粒／核及特殊鼻常嗜银染色区百分率及内外颗粒总合，代替检测１００个有核细胞ＡｇＮＯＲｓ嗜银颗粒面积（ＧＡ），并测定１００个有核细胞核面积（ＮＡ）、ＧＡ和Ｇ／Ａ（嗜银颗粒／有核细胞核面积）的比值三项指标，结果表明急性白血病ＡｇＮＯＲｓ颗粒／核为４．４３±０．９８，特殊异常嗜银染色区占１９．８％；期余ＡｇＮＯＲｓ颗粒／核分别为：慢性白血病为３．０３±０．８２，其它白血病为４．３５±１．４９，骨髓增生异常综合征为４．３１±１．３８，非白血病为２．８５±０．９５；正常人为１．４９±０．３７。     

白血病银染核仁形成区蛋白变化与疗效的初步观察

白血病银染核仁形成区蛋白变化与疗效的初步观察杨凌陆桂君黎承平温柏平李惠民杨弘银染核仁形成区蛋白（ＡｇＮＯＲｓ）的方法已被广泛应用于肿瘤疾病的研究，对实体瘤的良、恶性鉴别、分级及估计预后有重要价值［１］。我们观察７２例白血病患者骨髓细胞ＡｇＮＯＲｓ计数...     

日本血吸虫培养细胞核仁组织区相关嗜银蛋白的研究

目的 通过研究日本血吸虫成虫与童虫培养细胞核仁组织区相关嗜银蛋白(AgNORs)含量及β-巯基乙醇对培养细胞AgNORs的影响,探讨AgNORs能否作为评价日本血吸虫培养细胞增殖的指标以及β-巯基乙醇对培养细胞的促增殖作用。方法 联合法培养虫龄分别为18d和24d的日本血吸虫童虫与成虫,将童虫细胞随机分成对照组和实验组,对照组细胞与成虫细胞使用常规培养基培养,实验组在常规培养基中加入50μmoL/L β-巯基乙醇和1mmoL/L丙酮酸钠。培养第5d,运用胶银法染色,使用HPIAS-2000图像分析系统,计算培养细胞核内AgNORs颗粒数,测定银染颗粒面积与核面积的百分比和平均光密度。结果 日本童虫培养细胞(对照组)的AgNORs颗粒数目、颗粒面积与核面积百分比、平均光密度均高于成虫培养细胞。统计学分析显示,两者之间的AgNORs颗粒数日,银染颗粒面积与核面积百分比、平均光密度两两比较均有统计学差异(P<0.01或P<0.05);实验组培养细胞与对照组比较,AgNORs颗粒数目明显增多颗粒面积与核面积百分比、平均光密度均显著升高。统计学分析可知,两组细胞三组参数之间均有统计学差异(P<0.01或P<0.05)。结论 AgNORs可作为评价日本血吸虫培养细胞增殖的一个简便、敏感的指标。日本血吸虫童虫培养细胞较成虫培养细胞更具增殖潜能;β-琉基乙     

T细胞核仁组成区嗜银蛋白对老年人肿瘤诊断的价值

目的　探讨老年肿瘤患者外周血T淋巴细胞核仁组成区嗜银蛋白的变化 ,及其与机体免疫关系。　方法　利用KL型肿瘤免疫图像分析系统检测 4 5例健康老年人 (对照组 )、36例老年炎症患者 (炎症疾病组 )、97例老年肿瘤患者 (肿瘤组 )和 30例老年肿瘤治愈患者 (肿瘤治愈组 )的外周血T淋巴细胞核仁组成区嗜银蛋白 ;应用流式细胞仪检测老年肿瘤组患者外周血T淋巴细胞表面分化抗原 (CD3、CD4、CD8)及自然杀伤细胞。　结果　与老年对照组〔(7 36± 0 76 )IS %〕及炎症疾病组〔(7 16± 1 0 4 )IS %〕相比 ,老年肿瘤组〔(5 39± 1 70 )IS %〕外周血T细胞嗜银蛋白降低 ,且差异有显著性 (P <0 0 1) ;转移性肿瘤患者嗜银蛋白下降更明显。　结论　外周血T淋巴细胞嗜银蛋白可作为老年人肿瘤的诊断和治疗监测指标。     

骨髓细胞嗜银蛋白染色的临床意义

对８８例病人的骨髓细胞进行了Ａｇ－ＮＯＲ染色，结果表明非肿瘤性疾病与白血病末缓解两组间；白血病末缓解与白血病缓解组间；淋巴瘤组与非肿瘤性疾病组间均有非常显著性差异。提示Ａｇ－ＮＯＲ染色对骨髓细胞良，恶性疾病具有鉴别价值。，     

T淋巴细胞Ag—NORs的检测在原发性肝癌诊断中的价值

目的 :研究T淋巴细胞核仁形成区嗜银蛋白 (Ag NORs)在原发性肝癌免疫学诊断中的意义。方法 :采用KL型肿瘤免疫计算机图像分析系统 ,测定 38例正常人和 2 5例原发性肝癌患者外周血T淋巴细胞Ag NORs的含量 ,以细胞核仁银染面积与细胞核面积比值 (I .S % )作为检测评估指标 ,以了解原发性肝癌患者Ag NORs的变化情况。同时 ,检测 2 5例原发性肝癌患者血AFP含量 ,以比较Ag NORs和AFP诊断原发性肝癌的灵敏性。结果 :2 5例原发性肝癌的平均I .S %值为 5 5 1%± 0 85 % ,明显低于正常人的 7 12 %± 0 78% ,二者差异显著 (P <0 0 5 ) ;Ag NORs的检测阳性率达 88% ,高于AFP的检测阳性率的 84% ,但差异无显著性 (P >0 0 5 )。 4例AFP正常的原发性肝癌患者中有 3例Ag NORs检测为异常。结论 :T淋巴细胞Ag NORs与原发性肝癌的诊断呈良好的相关性和较高的灵敏性 ,可望成为一种原发性肝癌免疫学诊断的指标     

胃疾患时急性时相血浆蛋白的腔分泌及肿瘤坏死因子的调控作用

用ＩＣＳ－Ⅱ免疫化学系统（Ｂｅｃｋｍａｎ）检测１８２例慢性浅表性胃炎、慢性萎缩性胃炎，十二指肠球部溃疡和胃癌患者的胃液发现，胃液中含数量不等的Ｃ反应蛋白（ＣＲＰ）、α１抗胰蛋白酶（α１ＡＴ）、α１酸性糖蛋白（α１ＡＧ）、Ｃ３和Ｃ４等急性时相血浆蛋白（ＡＰＰｓ），证明这些蛋白向胃腔内分泌－腔分泌。慢性萎缩性胃炎较浅表性胃炎或兼有十二指肠球部溃疡者显著升高（Ｐ＜０．０１），胃癌又较慢性萎缩性胃炎显著升高（Ｐ＜０．０１），胃癌术后ＡＰＰｓ明显下降（Ｐ＜０．０１）。这不仅说明ＡＰＰ可能参与疾病的发生和发展，对这些疾病的鉴别也有一定价值。胃癌患者用肿瘤坏死因子治疗后，可刺激Ⅰ型ＡＰＰ表达，使ＣＲＰ、α１ＡＧ和Ｃ３和Ｃ４显著升高（Ｐ＜０．０５），但对Ⅱ型ＡＰＰ却有抑制作用，导致α１ＡＴ下降（Ｐ＜０．０５）。这对治疗有一定指导意义。     

Effects of Chronic Ethanol Consumption on G Proteins in Brain Areas Associated with the Nigrostriatal and Mesolimbic Dopamine Systems

This study examined the effects of chronic ethanol consumption on the content of G proteins in brain areas associated with the nigrostriatal and mesolimbic dopamine systems of male Fischer 344 rats, aged 3, 5, or 13 months at the time of killing. In addition, G protein mRNA was assessed in 3-month-old rats. G proteins were examined in ethanol-fed rats because a number of studies have implicated these proteins with both the acute and chronic effects of ethanol. Brain areas associated with the nigrostriatal and mesolimbic dopamine systems were examined because of the evidence that these systems are sensitive to ethanol. The brain areas examined include the substantia nigra (SN), striatum (ST), globus pallidas (GP), frontal cortex (FCX), nucleus accumbens (NA), ventral tegmental area (VTA), and ventral pallidum (VP).
These experiments demonstrated that the 3-month-old rats that consumed a 6.6% (v/v) ethanol-containing liquid diet for 4 weeks had a significant (∽30–40%) increase in the mRNA content of G_13α, in the FCX, VTA, and VP, and a significant (∽20%) decrease of that for G_0α in the SN. Nonetheless, the content of the G_0α protein subunit was not altered. In addition, there were no significant differences in the content of the proteins detected by antibodies to G_6α, G_0α, G_11α/G_12α, and G_0α/G_13α in the FCX, NA, and ST of similarly treated older rats (5 and 13 months). The content of mRNA for the other G proteins examined in the seven brain areas of 3-month-old rats was unaffected by chronic ethanol exposure.     

幽门螺杆菌感染与老年胃癌及癌前病变PCNA、Bcl-2、p16蛋白表达的关系

目的　探讨幽门螺杆菌 ( Hp)感染老年胃癌及癌前病变患者增殖细胞核抗原 ( PCNA)、p1 6和关键性凋亡调节基因 Bcl- 2蛋白的表达。方法　免疫组化方法测定 PCNA、Bcl- 2、p1 6蛋白表达。快速尿素酶法和 HE染色检测 Hp感染。结果　从浅表性胃炎到胃癌 PCNA指数呈递增趋势 ,各组间均有显著性差异 ( P<0 .0 5)。浅表性胃炎和萎缩性胃炎组中 Hp阳性患者与 Hp阴性者的 PCNAL I相比有显著性差异 ( P<0 .0 5)。Hp阳性组肠上皮化生、异型增生组织中 Bcl- 2的阳性表达率显著高于 Hp阴性组 ( P<0 .0 5)。 p1 6在慢性胃炎中阳性表达率显著高于胃癌、肠上皮化生和异型增生 ( P<0 .0 5)。 Hp阳性萎缩性胃炎组织的 p1 6阳性表达率低于 Hp阴性组 ( P<0 .0 5)。结论　在老年胃癌发生的早期即存在 p1 6基因表达低下 ,PCNA、Bcl- 2蛋白表达增加     

Study on the predictive ability of emergency CHADS2 score and CHA2DS2-VASc score for coronary artery disease and prognosis in patients with acute ST-segment elevation myocardial infarction

BackgroundAcute ST-segment elevation myocardial infarction (STEMI) has a high morbidity and mortality rate. The congestive heart failure, hypertension, age, diabetes, previous stroke/transient ischemic attack (2 points) (CHADS₂) and CHADS₂ score with 2 points assigned for age >75 years-vascular disease (CHA₂DS₂-VASc) scores are widely used for risk stratification management of non-valvular atrial fibrillation stroke and have high prognostic value in cardiovascular disease. This study aims to investigate the predictive value of the emergency CHADS₂ and CHA₂DS₂-VASc score on coronary artery lesions and prognosis in patients with acute STEMI.MethodsA total of 524 patients with STEMI from May 2018 to October 2021 were selected for emergency CHADS₂ and CHA₂DS₂-VASc. Clinical data and laboratory indicators were collected. Patients were evaluated for coronary artery disease (CAD) and prognosis. Logistic regression and the receiver operating characteristic (ROC) curve were used to analyze the data.ResultsIn severe group, CysC levels, CHADS₂, CHA₂DS₂-VASc score and the proportion of diabetes, stroke or transient ischemic attack (TIA), congestive heart failure, smoking history, Killip class ≥2 was higher than that in mild and moderate group. In poor prognosis group, levels of serum creatinine (Crea), CysC, hemoglobin (Hb), CHADS₂, CHA₂DS₂-VASc score and the proportion of hypertension, diabetes, stroke or TIA, congestive heart failure, smoking history, and Killip class ≥2 was higher than that in good prognosis group. Diabetes (OR, 3.678; 95% CI: 2.876–5.872, 0.008), CHADS₂ (OR, 3.829; 95% CI: 2.310–5.832, 0.003) and CHA₂DS₂-VASc score (OR, 4.671; 95% CI: 3.125–6.187, 0.000) were independent risk factors for the severity of CAD (P<0.05). Diabetes (OR, 3.287; 95% CI: 2.231–5.123, 0.012), Killip class ≥2 (OR, 2.212; 95% CI: 1.023–2.987, 0.045), LVEF (OR, 3.110; 95% CI: 2.124–5.031, 0.023), CHADS₂ (OR, 3.228; 95% CI: 2.133–5.886, 0.005) and CHA₂DS₂-VASc score (OR, 3.988; 95% CI: 2.987–5.873, 0.001) were independent risk factors for prognosis of acute STEMI patients. Area under curve (AUC) value of CHA₂DS₂-VASc score in evaluating CAD and prognosis was 0.947, 0.931, higher than that of the CHADS₂ score (0.836, 0.812) (P<0.05).ConclusionsMultiple factors jointly affect the severity and prognosis of CAD in patients with acute STEMI. The CHA₂DS₂-VASc score is better than the CHADS₂ score in predicting the severity of coronary artery lesions and prognosis of patients, providing theoretical support for clinical practice.