血清HCG与β-HCG、游离β-HCG的相关性研究

目的:探讨血清中β-HCG、游离β-HCG与HCG含量的相关性,寻求它们之间的换算关系。方法:用磁分离酶联免疫技术测定不同组别血清标本中的HCG、β-HCG、游离β-HCG含量,计算β-HCG、游离β-HCG与HCG的相关系数,并作t检验。结果:正常妊娠孕妇血清中β-HCG、游离β-HCG与HCG含量间呈明显正相关,其中孕14-21周孕妇组P<0.05,其余孕妇组P<0.001,异位妊娠孕妇组P>0.05。结论:正常妊娠孕妇血清中β-HCG、游离β-HCG与HCG有明显的相关性;异位妊娠孕妇中没有明显相关性。     

Gamma scintigraphy using Tc-99m labeled antibody to human chorionic gonadotropin

A case report is presented describing a 27-year-old woman with invasive trophoblastic hydatidiform mole metastatic to the lung. Gamma scintiscanning, using a polyclonal and monoclonal antibody specific to human chorionic gonadotropin, hCG, and labeled with Tc-99m, is described. The area of the primary lesion in the uterus was demonstrated with both antibodies tested without computer subtraction techniques; metastatic deposits in the lung were detected only with the aid of blood pool subtraction techniques.     

Ovarian imaging by the binding of radioiodinated chorionic gonadotropin: concise communication.

Previous studies have demonstrated the presence of specific, high-affinity receptors for human chorionic gonadotropin (HCG) in human and rat ovaries. In the present study, highly purified HCG was labeled with iodine-131 and used for the imaging of luteinized rat ovaries. Excellent images were obtained. The accumulation of radioactivity in the ovaries was completely inhibited by previous administration of excess unlabeled HCG. Time-course studies show that radioiodinated HCG was rapidly accumulated within 1 hr and largely cleared from the ovary at 24 hr. These results show the potential for imaging of endocrine target tissues by hormone-receptor binding, and the possibility of quantitation of hormone receptors in tissues under pathological conditions.     

不同灌洗液对经尿道前列腺等离子体双极电切术病人血糖、电解质的影响

目的 :观察经尿道前列腺等离子体双极电切 (PKRP)术中 5 %葡萄糖与 0 .9%生理盐水作为灌洗液对病人血糖、电解质的影响。方法 :5 8例ASAⅠ～Ⅱ级 ,术前无糖尿病 ,肝、肾功能无异常患者。 5 %葡萄糖组 (组Ⅰ ) 2 9例 ;0 .9%生理盐水组 (组Ⅱ ) 2 9例。手术均采用英国佳乐等离子体双极电切系统。结果 :组Ⅰ手术 30、6 0min及术后 6 0min血糖均较术前明显增高 (P <0 .0 1) ,且手术 6 0min较 30min亦明显升高 (P <0 .0 5 )。手术 6 0min及术后 6 0min血钠明显低于基础值 (P <0 .0 1)。血氯无显著性差异。术后 6 0min血钾明显低于基础值 (P <0 .0 5 )。组Ⅱ术中及术后血糖 ,血钾、钠、氯变化无统计学意义 (P >0 .0 5 )。结论 :经尿道前列腺等离子体双极电切术 ,灌洗液选用 0 .9%生理盐水是安全可行的 ,较 5 %葡萄糖注射液更有利于机体内环境的稳定和组织代谢。     

米力农治疗充血性心力衰竭疗效观察及其对血浆NT-pro-BNP的影响

目的观察米力农对充血性心力衰竭患者心功能及血浆脑利钠肽水平的影响。方法76例充血性心力衰竭患者随机分为研究组（36例）和对照组（40例）,两组患者均给予常规抗心力衰竭的治疗,根据病情选用利尿剂、血管紧张素转化酶抑制剂、B受体阻滞剂、螺内酯药物等,必要时应用洋地黄等正性肌力药物。研究组在常规治疗基础上加用米力农静滴,疗程为10d。观察两组治疗前后心功能改善情况：心脏指数（CI）、心输出量（CO）、左室射血分数（LVEF）和血浆NT—pro—BNP水平。结果治疗10d后,研究组与治疗前及对照组相比CI、CO和LVEF均明显增加。而NT—pro—BNP明显降低;差异有统计学意义（P〈O．01及P〈O．05）。结论米力农对充血性心力衰竭疗效较好,可提高CO、CI和IJVEF,降低血浆NT—pro—BNP水平。     

The influence of recruitment training on serum lipid shifts

We followed 930 healthy men who did not alter their habit of smoking cigarettes or ingesting alcohol for 3 months in a recruitment-training course. Lipid profiles were checked on two separate occasions 3 months apart. Smokers had lower high-density lipoprotein (HDL) cholesterol levels then nonsmokers before initiating the recruitment training. The average amount of exercise increased mildly by the evaluation of Borg score (p = 0.0004). There was a statistically significant difference in body weight reduction from 65.3 +/- 11.2 kg to 64.7 +/- 10.1 kg (p < 0.0001). In univariate analysis, there was an 8.7% decrease of the serum level of total cholesterol (TC; from 167.3 +/- 30.8 mg/dL to 152.7 +/- 26.9 mg/dL). There was a 15.2% decrease of the serum level of low-density lipoprotein cholesterol (from 104.1 +/- 28.3 mg/dL to 88.2 +/- 22.1 mg/dL). A 13.4% decrease of the serum level of apoprotein B (from 74.7 +/- 22.05 mg/dL to 64.7 +/- 17.0 mg/dL) was also noted. The TC/HDL cholesterol decreased from 1.18 +/- 0.24 to 1.08 +/- 0.24 in natural logarithm scales. All of the declines were statistically significantly different, with p less than 0.0001. The shift of HDL was not statistically significant (from 51.8 +/- 11.5 mg/dL to 52.4 +/- 12.5 mg/dL, p = 0.14). With a multivariate analysis, weight reduction was the most important factor contributing to the cholesterol-lowering effect. With a mild increase of exercise intensity, alcohol demostrated benefits to reduce serum cholesterol levels. Smoking would countervail the cholesterol-lowering benefits of alcohol use. It was evident that the serum levels of TC, low-density lipoprotein cholesterol, and the apoprotein B levels were increased in alcoholic smokers after exercise, but were decreased in alcoholic nonsmokers.     

The influence of methotrexate on radiation-induced damage to different lengths of the rat spinal cord.

An experimental model in the rat has been used to assess the possible enhancement of damage to the spinal cord when radiation is given in the presence of methotrexate (MTX). The dose of MTX used, 4 mg/kg, was the maximum dose that could be given to the rat, when administered into the cerebral spinal fluid circulation, without risk of serious neurological effects. Lengths of 4, 8 and 16 mm of the cervical spine were irradiated with single doses of X rays. For animals that developed paralysis within 30 weeks, caused predominantly by the presence of white matter necrosis, there was no evidence to indicate that MTX enhanced the radiation response of the rat spinal cord, at least at a more clinically relevant level of effect i.e. a low incidence of paralysis. However, for the doses associated with the 50% level of effect (ED50) to an 8 mm long field a significant (p less than 0.005) enhancement of the response was seen, suggesting a dose modification factor of 1.19 +/- 0.07. This was interpreted in terms of an hypothesis to explain the well documented volume effect for very small fields in the rat spinal cord which is based on the migration of viable cells in the periphery of the irradiated site. The apparent smaller effect seen when only 4 mm of the spine was irradiated might be related to the nature of the lesion induced at doses required to produce paralysis in these small fields; the lesions were not restricted to white matter but were more severe and also involved the grey matter and nerve roots after a slightly shorter latent period.     

半导体激光体外照射大鼠睾丸间质细胞作用的初步观察

目的探讨低强度半导体激光照射对睾丸间质细胞分泌睾酮的作用。方法原代培养大鼠睾丸间质细胞,用放射免疫方法测定睾丸间质细胞的睾酮分泌量,用MTT法测定细胞增殖率。比较激光照射组与对照组之间睾丸分泌量与细胞增值率的差异。结果激光照射第5天后,睾丸间质细胞增殖活性明显高于对照组（P〈0．05）。激光照射后第1天睾酮分泌量显著高于对照组（P〈0．05）,第2天就恢复到接近对照组水平,第3天略低于对照组的睾酮分泌量。结论低强度半导体激光可促进睾丸间质细胞增殖,使睾酮分泌量短暂升高。     

Effect of different doses of ultraviolet radiation on vitamin provision to the human body

Exposure of healthy adults to prophylactic doses of UV-radiation in the medium- and long wavelength spectrum improved metabolism of vitamins A, E and D and increased their content in the body. UV-irradiation even in prophylactic doses increased ascorbic acid requirements. Excessive UV-irradiation produced an adverse effect on the vitamin content. However, the vitamin concentration in blood was not significantly decreased. This can be explained by the adaptation of the human body to UV-irradiation upon a continuous increase of its dosage.