The tissue-specific transcription factor Pit-1 is expressed in the spinal cord of the lancelet, Branchiostoma lanceolatum

Plasticity in pain control systems may play an important role in clinical pain and some mechanisms of plasticity may be similar to those involved in learning. In this study we investigate the importance of alpha-amino-3-hydroxy-5-methylisoxazole-4-proprionic acid (AMPA) and N-methyl-D-aspartate (NMDA) receptors for the maintenance of long-term potentiation (LTP) in wide dynamic range (WDR) neurons. Doses of 6-nitro-7-sulphomoylbenzoylquinoxaline-2,3-dione disodium (NBQX) and D-Q-amino-5-phosphonopentanoic acid (D-AP5) equipotent in reducing C-fiber mediated responses in controls, reduced the established LTP by about 50 and 80%, respectively. The drug effect lasted less than 1 h in controls. After induction of LTP, NBQX caused a reversible reduction of the potentiation. D-AP5, however, caused a stronger attenuation of the LTP, outlasting the effect of the drug in controls. We suggest that both pre-emptive analgesia preventing LTP induction and an early reduction of the excitation of neurons is important for the inhibition of LTP and central sensitization. Thus, it is possible that an early antinociceptive treatment preventing an excessive excitation of neurons in the dorsal horn may be of importance in preventing longlasting and pathological pain states.     

转录因子Elf-1在上皮性卵巢癌中的表达及其意义

目的探讨转录因子Elf-1在上皮性卵巢癌中的表达及其临床意义,并探讨Elf-1与卵巢癌细胞增殖的相关性。方法收集31例上皮性卵巢肿瘤组织及3例正常卵巢组织标本,采用免疫组化S-P法测定Elf-1在上皮性卵巢癌中的表达并对其表达情况进行分析。结果在23例上皮性卵巢癌组织中Elf-1阳性表达15例（65．22％）。Elf-1的表达与组织学类型有关（χ2=6．54,P〈0．05）,与患者的年龄、FIGO临床分期差异无统计学意义（χ2=0．25和0．08,P〉0．05）。Elf-1在上皮性卵巢癌中的表达与c-Fos在上皮性卵巢癌中的表达呈正相关（Kappar=0．39,P〉0．05）。结论Elf-1在上皮性卵巢癌组织中呈高水平表达,且与原癌基因c-Fos的表达呈正相关,提示Elf-1可能通过影响上皮性卵巢癌细胞的增殖而参与其发生和发展。     

转录因子 Elf-1在上皮性卵巢癌中的表达及其意义

目的 探讨转录因子Elf-1在上皮性卵巢癌中的表达及其临床意义,并探讨Elf-1与卵巢癌细胞增殖的相关性.方法 收集31例上皮性卵巢肿瘤组织及3例正常卵巢组织标本,采用免疫组化S-P法测定Elf-1在上皮性卵巢癌中的表达并对其表达情况进行分析.结果 在23例上皮性卵巢癌组织中Elf-1阳性表达15例(65.22%).Elf-1的表达与组织学类型有关(χ2=6.54,P＜0.05),与患者的年龄、FIGO临床分期差异无统计学意义(χ2=0.25和0.08,P＞0.05).Elf-1在上皮性卵巢癌中的表达与c-Fos在上皮性卵巢癌中的表达呈正相关(Kappar=0.39,P＞0.05).结论 Elf-1在上皮性卵巢癌组织中呈高水平表达,且与原癌基因c-Fos的表达呈正相关,提示Elf-1可能通过影响上皮性卵巢癌细胞的增殖而参与其发生和发展.