Imaging features of central nervous system haemangiopericytomas

Intracranial and spinal haemangiopericytomas are uncommon, durally based tumours. They macroscopically resemble meningiomas but are distinct histologically, have a more aggressive natural history and require different management. We present a pictorial review illustrating the radiological manifestations of these tumours that will aid in their preoperative identification.     

心电图对急性心肌梗死相关血管的预计价值

对385例急性心肌梗死患者作选择性冠状动脉造影。心电图定位为前壁心梗的相关血管89%是左前降支动脉(LAD),下壁心梗的相关血管76.4%是右冠状动脉(RCA)。阻塞发生于 LAD、RCA及左迥旋支动脉(LCX)近端的分别占67%、58%与78%。近端病变90%以上为重度或完全阻塞。在下壁心梗早期心电图出现心前导联 ST 段下移,是病变广泛的一项指标。     

Purification of hemopoietic progenitor cells from human marrow using a fucose-binding lectin and cell sorting

Human peripheral blood granulocytes, but not lymphocytes, erythrocytes, or monocytes, bound the fucose-binding lectin from Lotus tetragonolobus (FBP), and this binding was competitively inhibited by the sugar alpha- L-fucose. The fluorescence-activated cell sorter was used to study the appearance of this receptor on human marrow cells during granulocyte differentiation and to prepare fractions enriched for granulocyte- macrophage progenitor cells (granulocyte-macrophage colony-forming cells--GM-CFC). Cell binding of fluoresceinated FBP increased for bone marrow cells in the sequence--lymphocytes, blast cells, promyelocytes and myelocytes, monocytes, and polymorphonuclear cells. Selection of cells with appropriate low-angle or high-angle light scatter characteristics achieved a 10-fold or 2-3-fold enrichment of progenitor cells, respectively. By selecting cells with intermediate fluorescence intensity, a further 2-3-fold enrichment for GM-CFC was obtained. Cell sorting using the optimal selection of these three parameters produced up to 36-fold enrichment of the progenitor cells from human bone marrow. The most enriched fraction was composed of 23% progenitor cells (colony- and cluster-forming cells) with a yield of 36%. In populations most highly enriched by GM-CFC, immature cells (blast cells, promyelocytes, and myelocytes) made up 95% of the cells present.     

Castleman病临床及病理类型与合并症关系分析:单中心大宗病例观察

目的 研究Cagtleman病(CD)的临床及病理类型与各种合并症的关系,推测各种合并症的发病机制,以提高对本病的认识.方法 回顾性分析北京大学第一医院自1977年以来共53例CD患者的临床特点,同时分析临床合并症与临床类型和病理类犁的关系.结果 53例CD患者中单中心型32例(60.4%),多中心型21例(39.6%);病理分型示透明血管型(HV)37例(69.8%),浆细胞型(PC)9例(17.0%),混合型(MIX)7例(13.2%).患者中32例有合并症,占60.4%.根据受累器官不同分为累及皮肤、内脏和血液系统.临床类型与某些合并症的发生密切相关,32例单中心型的主要合并症为副肿瘤性天疱疮(PNP)和闭塞性细支气管炎(BO),21例多中心型的主要合并症为肾脏、血液改变.病理类型与合并症的发生密切相关:透明血管型主要合并症为PNP和BO,浆细胞型和混合细胞型主要合并症为内脏和血液受累.合并PNP的CD患者的临床和病理分型均不同于其他CD.Kaplan-Meier分析显示:伴有合并症的患者生存率明显低于无合并症的患者(P=0.028).结论 CD患者的合并症与其临床、病理分型有关,合并PNP的CD患者应单独分型,有无合并症是影响CD患者预后的关键因素.     

Epstein Barr virus latent membrane protein-1 in Hodgkin's lymphoma in Nigerians

Background

The burden of lymphomas on the health care system in Nigeria is enormous. Correct diagnosis and identification of aetiological factor are important steps in reducing this burden.

Methods

Eight cases diagnosed as HL within a period of six years at the Obafemi Awolowo University teaching Hospital, Ile-Ife, Nigeria by haematoxylin and eosin (Hand E) only were immunophenotyped using the indirect immunoperoxidase method. Epstein-Barr virus latent membrane protein-1 (LMP-1), CD15 and CD30 immunohistochemistry was also performed. The clinical characteristics of each patient were documented.

Objectives

To document the frequency of involvement of Epstein-Barr virus in cases of HL seen in a university hospital in Nigeria.

Results

Out of the eight cases diagnosed by H&E as HL immunophenotyping showed only five were HL. The rest were non-Hodgkin''s lymphoma (2 diffuse large B-cell and 1 null cell ALCL). All were cases of classical HL with 60% being of the mixed cellularity (MC) subtype. There were 2 males and 3 females with ages ranging from 7 years to 40 years. All presented with cervical lymphadenopathy and three had splenomegaly in addition. 60% of the tumour was EBV positive, all of the MC subtype. Three patients had chemotherapy. Eventually all were lost to follow-up. There was no case of the nodular lymphocyte predominance variant.

Conclusion

Mixed cellularity is the most common subtype and is the only subtype associated with EBV positivity in this study. Epstein-Barr virus probably plays an important role in the aetiology of HL in Nigerians.Running title: Epstein-Barr virus, Hodgkin''s lymphoma in Nigerians     

Scintigraphic pattern in missed testicular torsion

The testicular scintigraphic findings of nine patients with surgically and pathologically proved torsion of the testis of over 24 hours duration are reviewed. In the delayed blood-pool images each showed the classical avascular twisted testicle with a variable peripheral rim of hyperemia. In the dynamic blood-flow phase, eight revealed a perceptible increase of vascular perfusion in the scrotal region on the affected side, in addition to the testicular radionuclide angiogram peculiarities previously described for missed testicular torsion. This pattern of perfusion was seen only in torsion of over one day duration. A low salvage probability is expected in these cases.     

《医院会计制度》修订应体现行业特点

随着公共财政体制各项政策的建立,医疗卫生体制改革的不断深入,对10年前制定的医院会计制度进行适时修订,能够满足推进公立医院改革和加强公立医院财务管理的需要。但《医院会计制度》的修订,不宜过度借鉴国际通行做法和企业会计制度经验,应体现我国医院行业的特点,才能指导会计核算工作,增加适应性和可操作性。     

成人阻塞性睡眠呼吸暂停低通气综合征患者的人格特征分析

目的　调查成人阻塞性睡眠呼吸暂停低通气综合征（OSAHS）患者的人格特征及生活质量,了解该患病群体的心理健康情况。方法　采用明尼苏达多项人格测量表（Minnesota multiphasic personality inventory,MMPI）和简明健康状况调查表（the MOS item short from health survey,SF-36）分别对98例成人OSAHS患者及100例单纯鼾症志愿者进行问卷调查,评价OSAHS患者的人格特征及生活质量情况并进行对照性研究。结果　在MMPI调查中,OSAHS患者在抑郁、疑病、精神衰弱、情绪不稳定、精神分裂临床量表T分高于单纯鼾症组,差异具有统计学意义（P＜0.05）,其中OSAHS组中女性患者的抑郁、疑病、精神衰弱、情绪不稳定、精神分裂、社会内向临床量表T分高于男性患者,差异具有统计学意义（P <0.05）。在SF-36调查中,OSAHS患者在生理职能、一般健康状况、躯体疼痛、精力、社会功能、情感功能、精神健康7个维度的平均评分低于单纯鼾症组,差异具有统计学意义（P＜0.05）。结论  OSAHS患者有较多的心理健康问题,表现更多的易疲劳、注意缺陷,生活质量更低,OSAHS病情越重,心理健康问题越大,女性患者尤重。     

5-脂氧合酶激活蛋白抑制剂MK886对人食管癌细胞系增殖和凋亡的影响

目的 5-脂氧合酶活化蛋白（FLAP）抑制剂MK886对人食管癌细胞系（KYSE-150和TE-3）增殖和凋亡的影响及作用机制。方法用2.5、5、10、20、40和80μmol/L的MK886干预体外培养的KYSE-150和TE-3细胞;xCELLigence RTCA系统实时测定细胞增殖抑制率,同时确定半数抑制浓度(IC₅₀)。流式细胞测量术检测食管癌细胞的细胞周期。Western blot检测细胞凋亡和自噬相关蛋白的表达。结果人食管癌细胞系（KYSE-150和TE-3）的增殖抑制率随着MK886浓度增加而增强（P<0.05）,KYSE-150组的IC₅₀浓度为29.11μmol/L,TE-3组的IC₅₀浓度为27.47μmol/L。当MK886浓度增加至25μmol/L时,食管癌细胞G₀/G₁期滞后增加明显（P<0.001）,MK886处理浓度增加到50μmol/L时,食管癌细胞G₂/M期增加明显（P<0.001和P<0.05）...     

精神障碍患者自我面孔识别的行为特征与异常神经活动

自闭症、精神分裂症、抑郁障碍等精神障碍患者均表现出自我面孔识别缺陷。行为特征包括识别困难、错误率更高、反应速度更慢、速度加工优势消失、知觉加工受损及认知评价与情绪反应失调等;神经活动异常出现在自我面孔识别的各个加工阶段,涉及面孔结构编码相关的枕颞皮层、自我参照加工相关的皮质中线结构、认知控制有关的额顶控制网络以及情绪加工相关的脑岛等脑区。元分析结果揭示精神障碍患者额下回、内侧前额叶、海马旁回和脑岛等脑区活动存在异常。未来研究应结合时间和空间信息数据并关注脑区间协同功能的损伤,关注各类精神障碍患者自我面孔识别的共同特征及其独特性,并发掘自我面孔识别在精神障碍早期诊断中的潜在价值。