银杏叶提取物改善反复脑缺血再灌注小鼠血液流变学的作用

目的：研究银杏叶提取物（ＥＧＢ）改善反复脑缺血再灌注小鼠血液流这的作用。方法：采用反复脑缺血再注模型鼠,应用毛细管微量热沉法和毛细管微量法分别检测血纤维蛋白原含量和红细胞压积数值,并将结果输入全自动血液流变仪得出血浆粘度、血液粘度、血细胞聚集系数,血栓形成系数及微循环滞留时间（ＭＳＴ）。结果：ＥＢＧ２５￣１００ｍｇ／ｋｇ均可不同程度地降低Ｆｉｂ、ＨＣＴ、降低ηｂ、ηｐ、ηｈ,缩小ＶＡＬ及ＴＷＥＬ,     

甲地孕酮联合化疗对晚期非小细胞肺癌生活质量的影响

目的:比较甲地孕酮联合NP方案和单用NP方案化疗对晚期非小细胞肺癌生活质量的影响,评价甲地孕酮的临床疗效。方法:将60例晚期非小细胞肺癌患者随机分为治疗组与对照组。治疗组30例,于化疗前2天口服甲地孕酮160 mg,2次/d,同时予NP方案化疗。对照组30例仅接受NP方案化疗。于化疗4周期后评价患者的食欲、体重变化、KPS评分及不良反应。结果:经过4个周期后治疗组食欲、体重、KPS评分改善情况与对照组相比差异有统计学意义(P<0.05)。治疗组主要不良反应为高血压、便秘、血糖升高、皮疹、阴道流血、踝部水肿等反应,经对症处理后可缓解。结论:甲地孕酮可改善晚期非小细胞肺癌患者的生活质量,减轻其不良反应,不良反应可耐受。     

急性白血病完全缓解后患乳腺癌1例

1 病例报告女,51岁. 因发热、关节疼痛、齿龈胀痛、左下肺感染20 d,抗生素治疗无效,于2001-11-29入我院血液科治疗. 查体:T 37.5℃,P 120次/min,R 18次/min,BP 110/50 kPa,贫血外观,巩膜无黄染,皮肤黏膜无出血,右颌下可触及一黄豆粒大小淋巴结,触痛(±),胸骨压痛( ),心率120次/min,律齐,无病理性杂音. 双肺未闻及干湿啰音. 腹软,肝脾未触及,四肢运动正常. 既往史:曾于1992年行"乳腺小叶切除术",1999年因子宫肌瘤行"子宫次全切除术". 家族史:其姐姐1982年患乳腺癌,因肺转移已于1983年病故.     

广州市2010年登革4型病毒的分离及其E基因进化分析

登革病毒(DEN)E蛋白在病毒与宿主细胞融合和诱导机体产生抗体等过程中发挥重要作用[1].本研究通过对分离株E基因全序列测定,从分子水平确定其型别,并与广州市历年同型DEN流行株及相关国际流行株进行同源性比较,构建系统进化树,追踪其可能输入来源.     

End-stage periventricular leukomalacia: MR evaluation

A prospective study was performed to assess the capabilities of magnetic resonance (MR) imaging in evaluation of end-stage periventricular leukomalacia (PVL) in six children, aged 31-54 months, in whom PVL had been documented by neurologic ultrasonography during the neonatal period. Eight children of similar age (four premature infants and four full-term infants) with normal neurologic development served as controls. A characteristic triad of PVL abnormalities was seen on MR images: (a) abnormally increased periventricular white-matter signal intensity on the first and second echo images of a T2-weighted sequence (repetition time = 2,000-2,400 msec, echo times = 20 or 30 and 80 msec), most commonly observed in the trigone regions of the lateral ventricles bilaterally; (b) marked loss of periventricular white matter in these regions of abnormal signal intensity, predominantly in the periatrial regions; and (c) compensatory focal ventricular enlargement adjacent to regions of abnormal signal intensity. In patients with the classic periatrial distribution of PVL lesions, general correlation between the degree of neurologic impairment and the severity of MR abnormalities was demonstrated. MR imaging was useful in detecting subtle forms of PVL in cases in which neurologic damage was subclinical.     

p16INK4A and p15INK4B gene deletions in primary leukemias

The 9p21 locus has been deleted at a high frequency in a wide variety of tumors. Recently, two genes, p16INK4A and p15INK4B (also called MTS1 and MTS2), have been localized in close proximity at the 9p21 locus, encoding cyclin-dependent kinases 4/6 inhibitors of relative molecular mass 16 kD and 15 kD, respectively and also found to be deleted at a high frequency in tumor cell lines. We analyzed p16INK4A and p15INK4B genes in 178 cases of primary leukemias including 81 cases of chronic lymphocytic leukemia (CLL), seven of hairy cell leukemia (HCL), seven of chronic myelogenous leukemia (CML), 43 of acute myelogenous leukemia (AML), 27 of acute lymphoblastic leukemia (ALL), and 13 of myelodysplastic syndrome (MDS) by Southern blot analyses. The ALL cases showed a relatively high frequency of homozygous deletions (22%, 6 of 27) at the p16INK4A gene locus. Interestingly, of the six cases with p16INK4A homozygous deletions, only three showed homozygous deletions at the p15INK4B gene. In 81 CLL patients, we detected one homozygous and five heterozygous deletions at both the p16INK4A and p15INK4B genes and two heterozygous deletions at the p16INK4A gene alone. Deletion of these two genes in AML cases is relatively low (9%). We did not detect deletions in any of the MDS, HCL, and CML cases examined. Sequence analyses of p16INK4A gene of six CLL cases with heterozygous deletion at this locus showed a 27-bp deletion at the splice acceptor site of intron 1 in one case and changes in the coding sequence in three other cases. The data presented in this report showed that (1) p16INK4A and p15INK4B genes are preferentially deleted homozygously in ALL and heterozygously in CLL cases with frequent mutation in the second allele, and (2) p16INK4A gene appears to be more frequently deleted than p15INK4B gene.