膀胱移行细胞癌中P16及Rb基因表达的关系

应用免疫组织化学方法对５９例膀胱移行细胞癌中Ｐ１６及Ｒｂ基因的表达进行研究。结果显示：５９例中Ｐ１６及Ｒｂ基因阳性表达率分别为４７４６％、７１１９％，其中１１例肿瘤组织（１８６４％）Ｐ１６及Ｒｂ基因均阳性表达，未发现同一肿瘤组织中同时存在Ｐ１６及Ｒｂ基因的表达缺失。Ｐ１６及Ｒｂ基因在膀胱移行细胞癌中的阳性表达率在肿瘤病理分级及临床分期的差异中均有显著性（Ｐ＜００５）。结果提示：Ｐ１６及Ｒｂ基因的异常表达在膀胱肿瘤的发生、发展过程中起重要作用，膀胱肿瘤中Ｐ１６及Ｒｂ基因同时表达缺失是少见现象     

前列腺带性结构及其雄激素、雌激素、表皮生长因子受体分布特征的研究

为了探讨雄激素受体（ＡＲ）、雌激素受体（ＥＲ）、孕激素受体（ＰＲ）和表皮生长因子受体（ＥＧＦＲ）在前列腺带性结构中的分布，应用单饱和剂量测定法，分别测定了前列腺移行带、外周带组织中ＡＲ、ＥＲ、ＰＲ和ＥＧＦＲ的含量。结果表明，在１１例前列腺增生症（ＢＰＨ）患者２２份标本中，移行带和周围带ＡＲ全部阳性；尽管ＡＲ浓度个体差异很大，但是两带之间仍有密切相关性（Ｐ＜０００１）；周围带ＡＲ浓度高于移行带，两带ＡＲ浓度均高于ＰＲ、ＥＲ；ＰＲ和ＥＲ在前列腺带性结构上没有明显差异。ＥＧＦＲ在移行带明显高于周围带。研究证实了ＡＲ、ＥＲ、ＰＲ，ＥＧＦＲ在前列腺移行带和周围带上的分布特征。     

Endocrinology: High incidence of embryo transfer cancellations in patients with polycystic ovarian syndrome

This study was aimed at assessing the outcome of in-vitro fertilization(IVF) and embryo transfer in patients with polycystic ovariansyndrome (PCOS). The results of IVF and embryo transfer in PCOSpatients (PCOS group, 78 cycles of 26 patients) were comparedwith those of a control group (423 cycles in 202 patients withoutmale factor; age and ovarian stimulation protocol were matched).Although the pregnancy rate per transfer was not different inthe two groups of patients (25 versus 34%, PCOS versus controlgroup), the PCOS group had a significantly lower pregnancy rateper follicle aspiration (19 versus 31%, P < 0.05). A notableresult was a significantly higher incidence of embryo transfercancellations in the PCOS group (22 versus 8%, P < 0.01),which resulted from unpredictable failure of either oocyte recoveryor fertilization. The incidence of unexplained complete failureof fertilization was significantly higher in the PCOS group(18 versus 5%, P < 0.01). These results may reflect a reducedquality of the oocytes in the PCOS group, and there was a subgroupof PCOS patients who repeatedly produced poor results of treatment.Although the ovarian stimulation regimen best suited to PCOSpatients remains to be determined, special care should be takenduring ovarian stimulation, especially when the PCOS patientshad experienced unexplained failure of oocyte recovery or fertilizationin the previous treatment cycle(s).     

人卵巢癌中肿瘤转移抑制基因nm23-H1编码蛋白的表达

目的：探讨人卵巢癌标本中，肿瘤转移抑制基因ｎｍ２３－Ｈ１编码蛋白ＮＤＰＫ－Ａ表达的临床意义及其与预后的关系。方法：应用免疫组织化学抗生蛋白链菌素－过氧化酶结合（Ｓ－Ｐ）法，检测５８例人卵巢癌标本中ｎｍ２３－Ｈ１蛋白水平。结果：ｎｍ２３－Ｈ１蛋白的表达与患者手术时是否有淋巴结及大网膜转移相关（Ｐ〈０．０５），但原发灶与转移灶间的阳性表达率相差不显著；与患者术后生存时间密切相关（Ｐ〈０．０１），术后生     

Case Report: Gianotti-Crosti Syndrome Associated with Human Herpesvirus-6 Infection

We report a case of Gianotti-Crosti syndrome associated with human herpesvirus-6 (HHV-6) infection. An eight-month-old girl developed monomorphous papules on her cheeks, buttocks, and extremities after the subsidence of exanthema subitum. Viral antibody analysis confirmed primary HHV-6 infection. HHV-6 may be added to the list of causative agents of Gianotti-Crosti syndrome.     

用大肠杆菌CM89菌株对三种化学物抗突变作用的研究

本文以 E.coli CM891为靶细胞,用细菌内抗突变作用模式研究了肉桂醛,鞣酸,二烯丙三硫的抗4NQO 突变性及其作用机制。含质粒 pKM101的 CM891的高抗株(抗50μg/ml 氨苄青霉素)能提高该菌株的自发突变率和4NQO 诱发的突变率以及对鞣酸的杀伤抗性。肉桂醛的抗突变性不依赖质粒 pKM101效应,但与暂时性生长延搁有关。鞣酸及二烯丙三硫的抗突变机制可能包括质粒 pKM101介导的易误修复。上述三种化学物中每二种联合应用均显示抗4NQO 突变性的协同效应及对靶细胞的毒性杀伤作用。     

Hereditary characteristics of enzyme deficiency and dermatoglyphics in congenital color blindness

The hereditary characteristics of enzyme deficiency and dermatoglyphics in congenital color blindness (CCB) were studied. We propose that there is a linkage between the two loci on the X-chromosome determining CCB and glucose-6-phosphate dehydrogenase (G6PD), based on our study of a high incidence of G6PD deficiency in 156 male cases with CCB. The CCB gene is closely linked with that of G6PD deficiency from our pedigree investigations. The rise in the frequency of eight or more whorls, the low value of atd angle and the presenting rate of real palmar patterns of the thenar, hypothenar and I, areas presented the hereditary traits of congenital color blindness.     

Histamine level and transglutaminase activity may provide indication of the development of spontaneous mammary tumor in C3H mice

Histamine (HA) concentrations and HA metabolizing enzyme activities were measured in macroscopically unchanged mammary glands and in tumor tissue of C3H mice carrying spontaneous mammary tumor as well as im mammary glands of control subjects matched for age.The great fall in HA level and the enzyme activities in tumor tissue was confirmed. In host mammary glands which showed no current evidence of neoplasm, consistently lower than normal HA concentrations and elevated transglutaminase (TG) activity were found, It is suggested, therefore, that HA level and TG activity may provide an early indication of the development of spontaneous mammary tumor.