Primary non-Hodgkin's lymphoma of liver with humoral hypercalcaemia.

A case of primary non-Hodgkin''s lymphoma of the liver with associated humoral hypercalcaemia is described. The patient was successfully treated with combination chemotherapy. A similar association has not been reported previously.     

CA 125 as a tumour marker in epithelial ovarian cancer

CA 125, a high molecular weight glycoprotein, was measured in sera from patients with epithelial ovarian cancer, patients with benign gynaecological disease and in patients with non-ovarian adenocarcinomas. High levels (<35 U/ ml) were found in 48/50 patients with active ovarian cancer but in only 3/26 patients who had an ovarian cancer previously diagnosed but who were apparently disease free. 6/23 patients with non-ovarian adenocarcinomas as well as 4/18 patients with benign gynaecological disease also had elevated levels. CA 125 levels were higher in serous than non-serous ovarian cancers and tended to increase with increasing stage. In all of 19 patients with ovarian cancer who responded to treatment CA 125 levels fell while 17/20 with progressive disease showed a rise. In 7/8 patients, serial determination of CA 125 showed a rise before the clinical detection of recurrence, the median lead-time being 3.5 months. We conclude that CA 125 is an excellent marker in the management of patients with epithelial ovarian cancers.     

甲状旁腺激素相关蛋白加重蛋氨酸胆碱缺乏饲料诱导的小鼠非酒精性脂肪性肝病进展

目的 研究甲状旁腺激素相关蛋白（PTHrP）对蛋氨酸胆碱缺乏饲料（MCD）诱导的小鼠非酒精性脂肪性肝病（NAFLD）的影响。方法 构建小鼠 NAFLD 模型并分为空白对照组（普通饲料喂养 4 周）、AAV-Vehicle 组（注射空载腺相关病毒 AAV-Vehicle）和AAV-PTHrP组（注射PTHrP 过表达腺相关病毒）。实验期间监测小鼠体质量。收集小鼠肝脏组织进行HE染色、油红染色和天狼星红染色评估肝脏组织病理学改变;检测肝脏及血清中谷草转氨酶、谷丙转氨酶、甘油三酯和游离脂肪酸浓度评估小鼠肝脏损伤及脂肪代谢水平。250 μmol/LFFAs诱导小鼠正常肝细胞和人正常肝细胞24 h构建NAFLD细胞。根据有无PTHrP处理分为PTHrP组、对照组。油红及尼罗红染色检测细胞内脂质沉积程度;CCK8试剂盒检测PTHrP对脂肪变性肝细胞的毒性作用。结果 动物实验：对比AAV-Vehicle组,AAV-PTHrP组小鼠体重下降更为快速;AAV-PTHrP组小鼠肝脏谷草转氨酶（P<0.05）、谷丙转氨酶（P<0.05）、甘油三酯（P<0.01）、游离脂肪酸（P<0.05）水平,NAS评分以及SAF评分均显著升高（P<0.01, P<0.05）,肝脏脂滴堆积更为明显。细胞实验：同时加入PTHrP,小鼠及人NAFLD细胞模型的脂质沉积更为明显（P<0.01）,且细胞活性下降（P<0.05）。结论 PTHrP可能通过促进肝细胞脂滴沉积,加重MCD诱导的小鼠NAFLD。     

人A549肺腺癌细胞中甲状旁腺激素相关蛋白的表达及其与性激素状态相关性的研究

目的 探讨人A549肺腺癌细胞中甲状旁腺激素相关蛋白(PTHrP)的表达,以及性激素对其表达的影响.方法 将人A549肺腺癌细胞培养48 h后,采用逆转录聚合酶链反应(RT-PCR)检测其雌激素受体(ER)-α、β,雄激素受体(AR),PTHrP mRNA的表达.再分别以不同浓度(0、0.5、1、5、10 nmol/L...     

Elevated serum parathyroid hormone related protein and 1,25-dihydroxycholecalciferol in hypercalcaemia associated with adult T-cell leukaemia-lymphoma.

Hypercalcaemia occurs in up to 80% of patients with adult T-cell leukaemia-lymphoma (ATLL) associated with human T-cell leukaemia virus-1 infection. Elevated serum levels of 1,25-dihydroxycholecalciferol, implicated in the pathogenesis of hypercalcaemia in lymphoma, and of parathyroid hormone-related protein (PTHrP), which is associated with hypercalcaemia of several solid malignancies, were demonstrated in a patient with ATLL hypercalcaemia. Treatment with bisphosphonates reduced the serum calcium but had no significant effect on the serum PTHrP levels. This case supports recent in vitro evidence for enhanced PTHrP expression in ATLL tumour cells and suggests that more than one tumour cell product may be involved in the pathogenesis of ATLL hypercalcaemia.     

Squamous cell carcinoma of both ears associated with hypercalcaemia.

A case is presented showing rapid destruction of both ears by squamous cell carcinoma. The patient was transiently hypercalcaemic and hypophosphataemic; these biochemical abnormalities disappeared after radiotherapy.     

Parathyroid adenoma associated with bilateral renal calculi. A case report

Renal calculi is an uncommon clinical presentation of parathyroid adenoma today. Only 17% of parathyroid adenoma has renal calculi in Levin's report. The association of parathyroid adenoma is often overlooked in the patients of renal calculi. We report a case whose clinical presentation is renal calculi with renal colic Parathyroid adenoma was not discovered until the second admission. The patient's clinical presentation improved after parathyroidectomy. We report this case to remind the clinical physician regarding the possibility of coexistence of parathyroid adenoma in patients of renal calculi. Excision of the parathyroid adenoma is the only treatment for these patients.     

Life-threatening hypercalcaemia in association with Addisonian crisis.

A 35 year old woman was admitted with acute radial artery occlusion necessitating two operations and thrombolytic therapy. Subsequently a diagnosis of primary hypothyroidism was made and she was commenced on thyroxine replacement therapy. Her condition, however, continued to deteriorate with the development of an Addisonian crisis heralded by, and complicated by, severe, life-threatening hypercalcaemia. This case highlights the importance of considering Addison''s disease in any patient whose condition deteriorates after the introduction of thyroxine replacement, and illustrates the often forgotten association of hypercalcaemia and hypoadrenalism.     

绿色荧光蛋白作为神经干细胞示踪标记的实验研究

目的研究携带绿色荧光蛋白(green fluorescent protein,GFP)的腺病毒感染神经干细胞(neural stem cells,NSCs)后的荧光稳定性和持久性及其对NSCs生物学特性的影响;探讨利用其作为NSCs示踪标记的可行性.方法利用GFP-腺病毒空载体感染NSCs(NSCs-GFP),经G418筛选并连续传代,在相差显微镜下观察未感染NSCs和感染NSCs的形态以及在荧光显微镜下观察感染NSCs及其诱导分化后的GFP表达情况;并检测NSCs-GFP的细胞活性和细胞周期.调整GFP标记神经干细胞浓度为1×105/μl,将其植入大鼠侧脑室内,观察其在脑内的表达.结果未感染NSCs和感染NSCs的形态学、细胞活性和细胞周期等无明显差异(P＞0.05).GFP在诱导分化后的NSCs-GFP子代细胞中有高表达,并且第1代和第20代NSCs-GFP的绿色荧光无明显差别.在植入侧侧脑室周围可见绿色荧光的强表达,且持续时间较长.结论 GFP荧光稳定持久,对转染细胞的生物学特征无明显影响,并且移植后的荧光呈长时间强表达,因此可以将其作为神经干细胞的示踪标记,这将有利于神经干细胞移植后的可塑性研究.