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以18-甲基-17β-羟基-17α-乙炔基-雌甾-4-烯-3-酮(18-甲基炔诺酮),17β-羟基-17α-乙缺基-雌甾-4-烯-3-酮(炔诺酮),17β-羟基-17α-乙炔基-雄甾-4-烯-3-酮(妊娠素)和17a-羟基孕甾-4-烯-3,20二酮(17α-羟基黄体酮)为原料,经NaBH,还原、脱水、双键转位和酯化等反应合成一系列3,5-甾二烯化合物,用1HNMR和MS证明了它们的结构。动物筛选结果表明,17β-丙酰氧基-17α-乙炔基-雌甾-3,5-二烯(IVb2有明显的抗早孕活性。中断早期妊娠的作用似与其雌激素活性有关。 相似文献
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A George VM Srivastava GD Sundararaj 《Journal of Medical Imaging and Radiation Oncology》1997,41(2):199-200
A young man presented with desmoplastic fibroma in the proximal ulna. This rare tumour was treated by curettage and bone grafting. 相似文献
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A Blanco G Solis E Arranz GD Coto A Ramos J Telleria 《Acta paediatrica (Oslo, Norway : 1992)》1996,85(6):728-732
The purpose of this study is to measure soluble CD14 (sCD14) levels in sera from newborn with sepsis, to compare it with other markers, and to study its evolution in Gram-negative and Gram-positive sepsis. Forty normal newborns were included (26 were full term and 14 were preterm infants), 20 babies had a positive blood culture (11 Gram-positive and 9 Gram-negative) and 16 cases were suspected of having sepsis based on clinical and laboratory findings, but a negative blood culture. Interleukin-6 (IL-6), sCD14, and tumour necrosis factor-α (TNFα) were measured by enzyme immunoassay, and fibronectin (FN) and C-reactive protein (CRP) by radial immunodiffusion. Neonates with a positive blood culture had increased levels of sCD14(3.20 ± 1.26μgml-1 , p < 0.001), CRP(69 ± 46 μgml-1 , p < 0.001)and IL-6 (134 ± 150 pg ml-1 , p < 0.001), and decreased values of FN (12.3 ± 6.6 mg ml-1 , p < 0.001). TNFα levels were also high (160 ± 37 pg ml-1 ), but this increase was not statistically significant. Newborn infants suspected of having sepsis but a negative blood culture had similar but milder abnormalities. Soluble CD 14 levels correlated with CRP values; however, there was no correlation between sCD 14, TNFα and IL-6. Neonates with sepsis by Gram-positive bacteria had lower sCD14 levels than patients with Gram-negative sepsis (2.63 ± 1.2 versus 4.04 ± 1.0μgml-1 , p < 0.05). In conclusion, the sCD14 level is increased in newborn infants with sepsis, and this is higher in infections by Gram-negative bacteria, suggesting a different contribution of monocyte and macrophage cells. In contrast, IL-6, TNFα, CRP and FN values are similar in infections by Gram-positive and Gram-negative bacteria. 相似文献
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E Szklarz M Jaszczo?t Z Wo?nicki B G?uszczyk-Ferenc 《Archivum immunologiae et therapiae experimentalis》1989,37(5-6):641-649
The comparative studies presented in this work aimed at evaluation of isoprinosine in the combined cytostatic and irradiation treatment of small cell lung cancer. The comparison was performed between three groups of patients: 1. treated by the method of Livingston et al., 2. treated by the method of Livingston et al. in a combination with isoprinosine, 3. treated by the same method but the cycle of treatment was shortened from 3 weeks to 8 days with the parallel application of isoprinosine as immunotherapeutic and stimulator of the hematopoietic system. It was found that the mean time of complete and partial remission and the mean survival time was longer in the second and third group of patients. The mean survival time in the first group amounted to 3 weeks, in the second to 43 weeks and in the third to 49 weeks. It was also shown that post-chemotherapy complications were less frequent and less intensive. 相似文献