Occurrence and Distribution of Bone Tumors in Beagle Dogs Exposed to 90Sr

Radiation-induced bone tumors in beagle dogs exposed to ⁹⁰Sr have been evaluated in terms of their incidence, time of appearance, occurrence as multiple tumors, anatomic distribution, and the influence of sex on their development. Among dogs fed ⁹⁰Sr during skeletal development, the incidence of bone tumors was dose dependent. Tumors thus appeared in 10 of 19 dogs receiving average skeletal doses of 130 Gy, 15 of 60 receiving 97 Gy, 5 of 61 receiving 61 Gy, 2 of 65 receiving 26 Gy, and 1 of 40 receiving 1.3 Gy. No tumors appeared among 66 dogs who received 8 Gy, 78 who received 0.3 Gy, and 80 non-irradiated controls, all of which have been observed for life. Among dogs given a single intravenous injection of ⁹⁰Sr in early adulthood, tumor production was somewhat higher than among ⁹⁰Sr-fed dogs at the same radiation dose: bone tumors were present in 6 of 25 dogs who received 62 Gy and 1 of 20 dogs who received 7.5 Gy. Bone tumors appeared sooner and were more often multiple in animals receiving the higher doses. Long bones were the sites of most of the tumors appearing after the highest dose level. Bones of the head, particularly the mandible, were the predominant site of tumors in the next highest dose level group.     

妊娠黄体瘤1例报告并文献复习

目的：探讨妊娠黄体瘤（LP）的误诊原因。方法：对1例典型LP病例进行全面病理学检查和组化及免疫组化染色，与正常卵巢黄体进行对比分析，并复习文献。结果：LP均发生于妊娠后期，临床无明显自觉症状，其病理形态学、组织学、免疫组化反应与正常卵巢黄体相似。多在剖腹产时偶然发现而误为卵巢肿瘤。结论；LP为妊娠后期卵巢黄素化细胞的结节状增生，并非真性肿瘤。妊娠期出现卵巢明显增大，应首先考虑到本病的可能性。必要时术中可作活检，以避免误切卵巢。     

Buoyant density characterization of neoplastic cell populations in patients with chronic B-lymphocytic leukemia

Leukemic cells from a series of patients with chronic B-lymphocytic leukemia (CLL) were analyzed for their buoyant density on discontinuous Percoll gradients. The density profile varied markedly between different patients and also between samples from different body compartments within the same patient. A good correlation was observed between buoyant density and maturation stage of the leukemic clones as judged by Ig-expression and their reactivity with a panel of monoclonal antibodies. Phorbol-ester-induced changes in the leukemic cells were found to be accompanied by a general decrease in their buoyant density. No correlation between density and clinical parameters such as cell counts, clinical stage and survival could be noted. Buoyant density characterization of leukemic B-cell populations is seen as a useful, rapid and simple marker of compartmentalization within the B-lymphocyte maturation spectrum but its clinical relevance remains to be established.     

增殖细胞核抗原在口腔鳞状细胞癌中的表达

采用鼠抗ＰＣＮＡ单克隆抗体，ＡＢＣ法，对１１例正常口腔粘膜及２９例口腔鳞癌进行了染色。结果表明：正常粘膜仅在基底层中有少量的ＰＣＮＡ阳性细胞，其阳性分级为１级。而鳞癌阳性分级主要是３～４级，随着组织学分级的升高，ＰＣＮＡ阳性表达率也相应增高。经统计学分析，正常组织与鳞癌之间及鳞癌各级均有非常显著差异（Ｐ＜００１）。提示：ＰＣＮＡ的表达与口腔鳞癌组织学分级有关。     

胃癌c-erbB-2过度表达与预后的关系

探讨c－erbB－2过度表达与胃癌预后的关系。方法：用免疫组化ABC法对103例胃癌手术标本及151个转移淋巴结进行c－erbB－2表达检测。结果：21．4％胃癌手术标本出现阳性表达．其中进展期胃癌、乳头状腺癌、高中分化胃癌及伴淋巴与肝转移的胃癌阳性率显著增高（P＜0．05与＜0．01）；转移淋巴结表达阳性率高于胃癌原发灶（X2＝3．7．P＞0．05）。高中分化胃癌伴c－erbB－2过度表达者5年生存率显著低于阴性者（P＜0．01）。结论：c－erbB－2过度表达可作为胃癌预后估计指标之一。     

青蒿鳖甲汤加减治疗癌性发热经验总结

肿瘤发病率逐年上升,治疗手段日渐丰富,肿瘤患者的生存期得到明显延长,生活质量得到显著提高。因此,肿瘤和放疗、化疗后引起的并发症对患者生活质量及疾病预后的影响显得愈加重要。癌性发热作为肿瘤患者的常见并发症之一受到密切关注。临床实践发现西医治疗非感染性发热效果欠佳,而中医药优势相对显著,退热效果明显,不易反复,对患者生活质量及预后改善有利。     

Renal cell adenomas and carcinomas in hemodialysis patients: Relationship between hemodialysis period and development of lesions

Step-sections of 96 whole kidneys from 50 chronic hemodialysis patients were subjected to a histopathological and quantitative investigation with regard to the development of renal neoplastic lesions. The range of hemodialysis duration was from 1 to 222 months. A total of 349 renal cell adenomas were found in 41 cases (82%). They were commonly multiple and present bilaterally. Renal cell carcinomas were evident in four cases (8%), with hemodialysis durations of 54, 57, 112 and 222 months. The incidence of adenomas increased in a hemodialysis duration-dependent manner, indicating a high risk of renal cell tumor development in chronic hemodialysis patients. Furthermore, acquired cystic disease of the kidney (ACDK) was also observed in 12 cases (24.0%), where the mean hemodialysis period was 143.4 ± 48.0 months. This value was significantly longer than that of non-ACDK cases (P < 0.001). There was, however, no clear relationship between the appearance of ACDK and renal cell tumors. The present results underline the necessity for attention to possible neoplasia of the kidney in patients on long-term hemodialysis.     

合体细胞滋养层细胞外囊泡阻止母体恶性肿瘤侵袭及转移至胎儿相关机制研究

目的探讨合体细胞滋养层细胞外囊泡(STB-EV)阻止母体恶性肿瘤侵袭、转移至胎儿的相关机制。 方法选择2015年6月,于四川大学华西第二医院进行剖宫产术分娩的1例妊娠合并宫颈癌(CCP)患者被肿瘤侵犯的胎盘组织为研究对象。宫颈癌细胞系SiHa细胞和人滋养层细胞系HTR-8细胞,均由本院西部妇幼医学研究院-分子与转化医学实验室馈赠。其中,本例CCP患者被肿瘤侵犯的胎盘组织制作组织切片后,于光学显微镜(×400)和电子显微镜(×2 000)下,观察其组织形态学、STB-EV及合体细胞滋养层(STB)旁宫颈癌细胞自噬性死亡情况等;而SiHa细胞与HTR-8细胞培养后,用于Transwell迁移实验与细胞划痕实验。将SiHa与HTR-8细胞共培养,纳入研究组;单独培养的SiHa细胞,纳入对照组。对2组细胞进行Transwell迁移实验及细胞划痕实验,2组Transwell小室穿膜细胞数、细胞迁移率等比较,采用成组t检验。本研究遵循的程序符合2013年新修订的《世界医学协会赫尔辛基宣言》要求。 结果①对本例CCP患者被肿瘤侵犯的胎盘组织制作组织切片后,于光学显微镜(×400)下观察结果显示,与STB相邻宫颈癌细胞自噬性死亡、凋亡和固缩性坏死显著。电子显微镜(×2 000)下观察结果显示,宫颈癌细胞累及胎盘绒毛组织时,STB分泌的STB-EV水平显著高于正常胎盘组织。②2组细胞Transwell迁移实验结果显示,研究组穿膜细胞数为(597.6±87.7)个/视野,显著低于对照组的(1 358.4±203.0)个/视野,并且差异有统计学意义(t＝14.490、P<0.001)。③2组细胞划痕实验结果显示,划痕后48 h时,研究组细胞迁移率为(26.6±3.8)%,显著低于对照组的(45.9±3.7)%,并且差异有统计学意义(t＝3.122、P＝0.035)。 结论STB分泌的STB-EV可能参与母体肿瘤细胞广泛自噬性死亡,从而阻止母体肿瘤细胞侵袭胎盘、影响胎儿发育。