隐匿型t（15;17）易位伴inv（11）（p12q23）核型的急性早幼…

为进一步探讨无ｔ（１５；１７）易位而伴有其它染色体改变的急性早幼粒细胞白血病（ＡＰＬ）患者分子生物学变化与预后的关系，应用短期细胞培养、胰酶消化、Ｇ显带技术进行骨髓细胞染色体检测及使用巢式ＰＴ／ＰＣＲ技术检测ＰＭＬ／ＲＡＲａ融合基因及ＨＲＸ基因。在被检测的３２例ＡＲＬ患者中，发现１例４６，ＸＸ．ｉｎｖ（１１）（ｐ１２ｑ２３）易位的ＡＰＬ患者。分子生物学见ＰＭＬ／ＲＡＲａ融合基因转录本，未见ＨＲＸ基     

PML—RARα基因在早幼粒细胞性白血病发病中的作用研究

目的：通过封闭ＰＭＬ－ＲＡＲα融合基因对ＮＢ４细胞生长分化作用的影响，探讨ＰＭＬ－ＲＡＲα融合基因与ＡＰＬ发病的关系。方法：用反义核酸封闭ＰＭＬ－ＲＡＲα融合基因的表达。ＮＢ４细胞的生长、分化及功能，通过细胞生长曲线、形态学、细胞表面标志及ＮＢＴ还原试验判定；细胞周期应用流式细胞仪分析。结果：ＰＭＬ－ＲＡＲα融合基因的封闭能够抑制ＮＢ４细胞生长，促进其分化成熟，同时可降低Ｓ期细胞的百分比（由５６％降至３７％）。结论：急性早幼粒细胞性白血病（ＡＰＬ）特征性的染色体易位ｔ（１５；１７）形成的ＰＭＬ－ＲＡＲα融合基因，是ＡＰＬ发病的分子基础。     

急性早幼粒白血病复合型染色体易位及其临床预后相关性的研究

目的研究急性早幼粒白血病（ａｃｕｔｅｐｒｏｍｙｅｌｏｃｙｔｉｃｌｅｕｋｅｍｉａ，ＡＰＬ，Ｍ３）中复合型染色体易位与临床治疗、预后的关系。方法应用常规核型分析、荧光原位杂交和逆转录酶／聚合酶链反应，检测了３例ＡＰＬ，Ｍ３。结果发现３例均有早幼粒白血病基因－维甲酸受体α基因（ｐｒｏｍｙｅｌｏｃｙｔｉｃｌｅｕｋｅｍｉａｇｅｎｅ－ｒｅｔｉｎｏｉｃａｃｉｄｒｅｃｅｐｔｏｒαｇｅｎｅ，ＰＭＬ－ＲＡＲα）融合基因转录本；核型呈复合型易位，除有１５和１７号染色体易位外还累及了５、１１、１６、２２号多条染色体，并与临床预后有一定相关性。结论对ＡＰＬ复合型易位的检测和深入研究，对临床治疗监测和预后判断有一定指导意义     

急性早幼粒白血病复合型染色体易位及其临床预后相关性 …

目的 研究急性早幼粒白血病（ａｃｕｔｅｐｒｏｍｙｅｌｏｃｙｔｉｃｌｅｕｋｅｍｉａ，ＡＰＬ，Ｍ３）中复合型染色体易位与临床治疗，预后的关系。方法 应用常规核型分析，荧光原位杂交和逆转录酶／聚合酶链反应，检测了３例ＡＰＬ，Ｍ３。结果 发现３均有早幼粒白血病基因－维甲酸受体α基因（ｐｒｏｍｙｅｌｏｃｙｔｉｃｌｅｕｋｅｍｉａｇｅｎｅｒｅｔｉｎｏｉｃａｃｉｄｒｅｃｅｐｔｏｒａｇｅｎｅ，ＰＭＬ－ＲＡＲα）融合     

应用染色体涂染技术检测慢性粒细胞白血病少见Ph易位的初探

为了对４例先经染色体Ｒ显带检查，初步诊断为少见Ｐｈ易位的慢性粒细胞白血病（ＣＭＬ）患者的骨髓染色体异常，又采用染色体涂染技术作了进一步研究。结果显示，２例为简单变异易位，核型分别是４６，ＸＸ，ｔ（５；２２）（ｑ３４；ｑ１１）和４６，ＸＸ，ｔ（１９；２２）（ｑ１３；ｑ１１）；１例为隐匿易位，核型是４６，ＸＹ，ｔ（１；２２）（ｑ４１；ｑ１１）；另１例为涉及３条染色体异常的复杂易位，核型是４６，ＸＹ，ｔ（７；９；２２）（ｑ３１；ｑ３４；ｑ１１）。本研究表明，染色体涂染技术可作为显带染色体检测ＣＭＬ少见Ｐｈ易位的一种辅助手段     

应用YAC探针进行荧光原位杂交检测慢性粒细胞白血病BCR基因重排

为检测慢性粒细胞白血病（ＣＭＬ）中ＢＣＲ基因重排，采用酵母人工染色体（ＹＡＣ）ＤＮＡ的Ｉｎ－ｔｅｒ－Ａｌｕ－ＰＣＲ产物为探针进行荧光原位杂交（ＦＩＳＨ）研究了１０例ＣＭＬ，其中包括初诊患者２例，ＣＭＬ急变并接受化疗２例，α干扰素治疗２例，自体骨髓移植术（ＡＢＭＴ）后３例和Ｐｈ染色体阴性ＣＭＬ１例。同时进行细胞遗传学和ＲＴ－ＰＣＲ检测。结果：９例ＣＭＬ的４６％～１００％的可分析核型显示ｔ（９；２２）易位，其中携带ｔ（９；２２）细胞最少者为１例自体骨髓移植术后８个月的患者，其６４％的分裂相存在ｔ（９；２２），３６％为正常核型；１例Ｐｈ（－）ＣＭＬ未见ＢＣＲ基因易位，而ＲＴ－ＰＣＲ（＋），提示ＡＢＬ基因片段插入２２ｑ１１，造成隐匿性Ｐｈ染色体。结果表明：应用ＹＡＣ探针进行原位杂交的定位明确。ＦＩＳＨ检测微小残留病（ＭＲＤ）比常规细胞遗传学方法更敏感，而且可以完成ＰＣＲ方法不易进行的定量分析。     

急性早幼粒细胞性白血病分子生物学研究进展

对急性早幼粒细胞性白血病（ＡＰＬ）维甲酸受体家族及ＰＭＬ／ＲＡＲα、ＰＬＺＦ／ＲＡＲα、ＮＰＭ／ＲＡＲα融合基因结构及功能的研究，在阐明独特的维甲酸反应机理、探讨ＡＰＬ发生机制、提高诊断水平、判断预后、监测疗效等方面具深远意义。     

Ph染色体的分子分析

Ｐｈ是慢性粒细胞白血病中最为常见的特异性染色体异常。细胞遗传研究表明；引起Ｐｈ的原因是由于ｔ（９；２２）易位。分子学研究表明；由于ｔ（９；２２）易位，导致原癌基因ＢＣＲ／ＡＢＬ的并列；ＢＣＲ／ＡＢＬ编码一种Ｐ１９０蛋白；这种蛋白能改变酪氨酸激酶的活性，从而引起细胞的癌变。     

185例白血病骨髓染色体R显带研究

应用染色体Ｒ显带技术对１８５例急慢性白血病骨髓进行研究，异常核型检出率为８７．６％（１６２／１８５），对于质量差的白血病骨髓染色体，Ｒ显带较Ｇ显带成功率高，尤其是末端带畸变者。ＭＤＳ涉及１、３、５、７、８、２０号等染色体异常，ｔ（８；２１）易见于Ｍ２，（１５；１７）见于Ｍ３，ｔ（９；２２）见于９５％ＣＭＬ和少数Ｍ１ＡＬＬ。ＣＭＬ急变还出现ｉ（１７）。双Ｐｈ、＋３、３ｑ－等异常。遗传学检查有助于提高白血病诊断符合率，同时提示染色体复杂畸变的白血病患者预后较差     

两例无t（8;21）M2b型急性髓系白血病的基因检测

两例无ｔ（８；２１）Ｍ_（２ｂ）型急性髓系白血病的基因检测肖志坚，王建祥，郝玉书，李建波，陈佩贞，卞寿庚，钱林生，孟庆祥Ｍ２ｂ型急性髓系白血病（ＡＭＬ）常见ｔ（８；２１）（ｑ２２；９２２）染色体易位［１］。１９９１年在２１号染色体ｑ２２断裂区发现了Ａ?..     

Deletion (2) (q37)

We report on a 5-month-old girl with widely spaced nipples, redundant nuchal skin, coarctation of the aorta, anal atresia with distal fistula, postnatal growth retardation, hypotonia, and sparse scalp hair. Initial clinical assessment suggested the diagnosis of Ullrich-Turner syndrome. Chromosome analysis showed a 46,XX,del(2)(q37) karyotype in peripheral lymphocytes. We compare her findings to those of other reported patients with terminal deletions of 2q. © 1994 Wiley-Liss, Inc.     

Theta-behaviour of poly(p-tert-butylstyrene)-block-poly(dimethylsiloxane)-block-poly(p-tert-butylstyrene)

The theta-behaviour of poly(p-tert-butylstyrene)-block-poly(dimethylsiloxane)-block-poly(p-tert-butylstyrene) ABA type triblock copolymers containing ca. 28% by weight tert-butylstyrene was studied in the selective solvents 1-nitropropane and 2-butanone using the phase separation method. The theta-temperatures in these solvents were found to be 157°C and 31°C, respectively. The intrinsic viscosities of the copolymers in 2-butanone (MEK) were obtained at different temperatures. The Mark-Houwink-Sakurada exponent α in MEK at 31°C is greater than 0,5, suggesting that the theta-behaviour of block copolymers is different from that of the homopolymers due to the presence of repulsive interactions between incompatible blocks.     

可溶性gp130对白血病抑制因子和制瘤素的拮抗作用

在研究可溶性ｇｐ１３０（ｓｇｐ１３０）分子对ＩＬ ６／ＩＬ ６Ｒ作用的基础上,继续研究了ｓｇｐ１３０对ＩＬ ６家族细胞因子白血病抑制因子（ＬＩＦ）和制瘤素（ＯＭ）的生物学作用。结果显示,ｓｇｐ１３０对ＬＩＦ和ＯＭ刺激的人多发性骨髓瘤（ＭＭ）细胞株ＸＧ４ ＣＮＴＦ的增殖有抑制作用。此外,ｓｇｐ１３０对ＬＩＦ和ＯＭ刺激表达ＬＩＦ受体的新鲜ＭＭ细胞的增殖也有抑制作用,提示ｓｇｐ１３０也可为ＬＩＦ和ＯＭ的拮抗剂。     

Degradation of poly(lactide-co-glycolide) (PLGA) and poly(L-lactide) (PLLA) by electron beam radiation

This paper seeks to examine the effects of electron beam (e-beam) radiation on biodegradable polymers (PLGA and PLLA), and to understand their radiation-induced degradation mechanisms. PLGA (80:20) and PLLA polymer films were e-beam irradiated at doses from 2.5 to 50 Mrad and the degradation of these films were studied by measuring the changes in their molecular weights, FTIR spectra, thermal and morphological properties. The dominant effect of e-beam irradiation on both PLGA and PLLA is chain scission. Chain scission occurs first through scission of the polymer main chain, followed by hydrogen abstraction. Chain scission, though responsible for the reduction in the average molecular weight, Tc, Tg and Tm of both polymers, encourages crystallization in PLGA. PLLA also undergoes chain scission upon irradiation but to a lesser degree compared to PLGA. The higher crystallinity of PLLA is the key factor in its greater stability to e-beam radiation compared to PLGA. A linear relationship is also established between the decrease in molecular weight with respect to radiation dose.     

窄手蚋的重新描述（双翅目：蚋科）

窄手蚋 （Simulium （Simulium） omorii）是Takahasi（1942）发表的新种,当时放在短蚋属（Omiadag）,该蚋标本是采自我国黑龙江省.Takahasi 仅描述了两性成虫和蛹,缺幼虫,况前者也不甚详细 1983年,虞以新和安继尧在我国黑龙江省饶河县珍宝岛地区,采到窄手蚋的两性成虫、幼虫和蛹,描述于后供同道者参考.窄手蚋与Rubzov（1956）描述的S. （S.） tenuimanus Enderlein, 1920很近似,不同的是：1. 足色：雌虫,窄手蚋前、中足股节黑色,后足股节基段1/5棕黄色.tenuimanus蚋,前、中、后足股节巧克力棕黑色,仅基部有点黄色.雄虫,窄手蚋后足转节、股节基端部、胫节基端部和中足基节1/2棕黄色,而tenuimanus 除前足基节和后足胫节基部褐色外,余部黑色.2. 窄手蚋中骨圆形或弹头形,前端圆形,后端凹入呈八字形 tenuimanu 中骨箭形,末端尖.标本保存于军事医学科学院医学昆虫标本馆.     

肠系膜上动脉闭塞性休克过程中一氧化氮的抗肺损伤用

本实验采用兔肠系膜上动脉闭塞（ＳＭＡＯ）性休ｋｅ模型，测定了休克前后人．出肺血一氧化氮（ＮＯ）的含量，动态观察了ＮＯ合成抑制剂ＬＮＮＡ对休克时平均动脉血（ＭＡＰ）和肺动脉压（ＰＭＰ）及对生存时间的影响，并测定了人、出肺血脂质过氧化代谢产物丙二醛（ＭＤＡ）的含量改变。结果发现，ＳＭＡＯ休克的出肺血ＮＯ显著低下人肺血（Ｐ＜０．００１），而休克后人、出肺血ＮＯ无明显差异，且与休克前相比也无明显差异。注入Ｌ－ＮＮＡ后显著增加了休克后的ＰＭＰ，缩短了存活时间。并使人、出肺皿ＭＤＡ含量明显增加，结果提示：在兔ＳＭＡＯ休ｋｅ中内源性ＮＯ具有重要的抗肺动脉压增高和抗肺损伤的作用。     

Alpha-thalassaemia (Hb-Bart's) in Rajasthan (India)

A total of 1,647 cord blood samples (618 of scheduled tribes, 487 of scheduled castes and 542 of general castes) of newborns from the Banswara, Bhilwara, Chittorgarh, Dungarpur, Sirohi and Udaipur districts of the Aravali hilly region of Rajasthan were investigated electrophoretically for evidence of Hb-Bart's (alpha-thalassaemia). Hb-Bart's was encountered in 31 (1.88%) neonates constituting 1.8 to 12.6% of their total haemoglobin. Of these, 24 (1.46%) were of alpha-thalassaemia 1 and 7 (0.42%) of alpha-thalassaemia 2. The incidence of alpha-thalassaemia genes varied from 3.07% in the scheduled tribes, 1.43% in the scheduled castes to 0.77% in the general castes populations giving an overall incidence of 1.88%. Except Hb-Bart's allele, no other mutant haemoglobins were observed.     

(E)TUDE APPLIQ(E)E DE ENC(E)PHALE ATLAS DANS MALADES AVEC INFARCTION C(E)R(E)BRALE

目的:探讨脑电地形图在脑梗死中的应用价值。方法:在43例脑梗死患者中,进行了脑电地形图和脑CT检查,并进行了对比。结果:脑电地形图和脑CT的改变是一致的,但脑电地形图改变早于脑CT。结论:脑电地形图在脑梗死患者中有重要的应用价值。     

(E)TUDE APPLIQU(E) DE ENC(E)PHAL ATLAS DANS MALADIES PSYCHI(Q)UE

目的:探讨脑电地形图在精神性疾病中的应用价值。方法:106例精神性疾病患者进行了脑电地形图检查,并进行了分析。同时,进行了脑CT检查,并进行了对比。结果:精神性疾患者的脑电地形图有明显的改变。结论:脑电地形图在精神性疾病中有重要应用价值。     

Pendant-type poly(4-vinylpyridine)-Cr(III) and -Co(III) complexes

Pendant-type poly(4-vinylpyridine) (PVP)-Cr(III) complexes ( 1 ) and -Co(III) complexes ( 2 ) with various degrees of coordination (x) were prepared, and the structures and properties of the polymer complexes are discussed. The magnetic susceptibility of 1 showed that 1 is paramagnetic and that the Cr(III) ions do not interact with each other, although they were coordinated along the PVP chain at high concentration. The far-infrared absorption bands, assigned to the stretching of the coordinative bond between Co and the pyridine-unit of PVP shifted to lower wave numbers in 2 , as compared with the corresponding pyridine complex 4 . It is thus considered that the coordinative bond in 2 is weaker than in the monomeric pyridine complex 4 , owing to the steric hindrance of PVP; the Co(III) chelates coordinated at high concentration. This consideration is supported by the ESR parameters of 1 . The dissociation temperature of the coordinative bond between Co and PVP increased with x. It is presumed that the PVP complex 2 has a rigid structure such that more energy is required to break the coordinative bond.