铁缺乏症患儿血清甲状腺素,生长激素胰岛素水平的动态观察

本文测定了５７名铁缺乏症患儿铁剂治疗前后血清Ｔ３、Ｔ４、ＴＳＨ、ＧＨ和ＩＮＳ含量，并与健康对照组进行比较。结果表明，铁缺乏患儿血清Ｔ３、Ｔ４、ＧＨ含量明显低于对照组者，血清ＴＳＨ、ＩＮＳ水平则显著升高。铁剂治疗后随着铁营养状况的改善，上述各指标均恢复正常。表明铁缺乏可影响体内某些激素的代谢，其原因可能与参与激素代谢的含铁酶活性在铁缺乏时减低有关。     

中枢神经系统的表面铁沉积症

本文通过对中枢神经系统表面铁沉积症的历史、病因、病理改变、临床表现、影像学特点、病理解剖及治疗进行综述，并认为其很可能是中枢神经系统的一个独立疾病单元。     

婴幼儿营养性贫血临床分析

营养性贫血是我国儿童的四大常见疾病之一，主要是因为铁缺乏引起。为了探讨婴幼儿添加辅食与营养性贫血的关系，我们对2002年7月～2003年12月来我院就诊的253例婴幼儿进行了营养性贫血的调查。     

甘氨酸螯合铁的合成工艺

以氯化亚铁和甘氨酸为原料,研究了甘氨酸螯合铁的合成工艺条件.结果表明,pH值、配位比以及抗氧化剂用量对产品组成和得率有很大影响.确定了螯合的最适条件为:pH值为5.5、配位比为4∶1.采用有机溶剂萃取法,使甘氨酸螯合铁在无水乙醇中以沉淀的方式析出,实现甘氨酸螯合铁与无机铁的分离.讨论了萃取时有机溶剂用量对产品得率的影响,在无水乙醇与滤液的体积比为9∶1时,亚铁得率最高.     

铁调节蛋白2基因多态性与阿尔茨海默病及血管性痴呆的相关分析

Objective To evaluate the association of 2616c/T polymorphism in iron regulatory protein 2(IRP2)gene with Alzheimer disease(AD)and Vascular dementia(VD).Methods In this study,281 patients with AD,60 with VD,and 285 normal aged were recruited.The 2616C/T polymorphism in IRP2 gene was analyzed by using polymerase chain reaction-restriction fragment length polymorphism.And the cognitive function was assessed with the Mini-Mental State Examination(MMSE).Results (1)No significant difieFences were demonstrated in IRP2 genotype or allele frequencies between AD patients and controls(χ2=2.46,P=0.292;χ2=2.17,P=0.141 respectively).However,when AD patients were stratified by disease severity.the frequency of T allele carriers in the moderate to severe AD patients was 78.0%,significantly higher than that in controls(69.8%;χ2=4.106,P＜0.05).Logistic regression analysis demonstrated that the age-,sex-and ApoE-adiusted OR of modcrate to severe AD patient with T allele was 1.62(95% CI=1.03-2.54).The frequency of T allele carriers or T allele in VD patients was higher than that of controls,but the difference was not statistically significant(P＞0.05).(2)The frequency of tit genotype or T allele in the moderate to severe AD patients was significantly higher than that in mild AD patients(25.8%vs.12.5%,χ2=5.477,P＜0.05;51.9%vs.40.3%,χ2=5.803,P＜0.05 respectively).(3)MMSE scores of the AD patients with TT genotype was significantly lower than ones with CC or CT genotype(P=0.028;P=0.014 respectively).Conclusion The 2616C/T polymorphism in the IRP2 gene is possibly associated with moderate to severe AD.but not associated with VD.And the TT genotype may be a risk factor for cognitive impairment of patients with AD in Chinese Han.     

血红素铁治疗女大学生缺铁性贫血的研究

缺铁性贫血的防治应注意解决铁的生物利用效率。通过学生营养调查发现贫血较普遍的主要原因是膳食中可利用铁较少，利用血红素铁强化食品对轻度贫血的女大学生每日补充６．０ｍｇ血红素铁，二个月后Ｈｂ、ＰＣＶ等均明显增加，表明血红素铁对缺铁性贫血的良好防治作用，建议适量增加血红素铁供给量将可有效地改善机体铁营养状况。     

广西毛南族农村妇女铁营养状况调查

对450名广西环江县毛南族农村育龄妇女进行血清铁蛋白(SF)、红细胞游离原卟啉(FEP)及血红蛋白(Hb)3项铁指标测定.结果发现:铁缺乏症患病率为27.8%(其中ID4.2%,IDE 7.8%,IDA 15.8%).随着孕次或产次的增加,血红蛋白水平逐渐下降,铁缺乏症患病率逐渐增高.有妊娠或分娩史的妇女与未孕或未生育的妇女血红蛋白水平与铁缺乏症患病率比较均有显著性差异(P<0.05).     

实验性蛛网膜下腔出血后脑血管痉挛兔海马组织中Bcl-2和Bax mRNA的表达

目的：探讨蛛网膜下腔出血(SAH)后脑血管痉挛(CVS)造成脑损伤的机制．方法：用反转录聚合酶链式反应(RT—PCB)技术检测兔SAH后CVS时海马组织Bcl—2和BaxmRNA的表达变化．结果：Bcl—2mBNA的表达水平在SAH组1d时即开始下降，3d时降至最低，持续至7d．SAH组海马组织中BaxmRNA的表达呈上升趋势，3d时达最高，7d时仍显著高于正常组．在假手术组海马组织内的Bcl—2和BaxmRNA的表达水平保持相对恒定．结论：Bcl—2和Bax可能参与了SAH后CVS所造成的海马神经元损伤过程。