催化极谱法测定产妇、新生儿全血和胎盘中的微量钼

在０－２２５ ｍｏｌ／ＬＨ２ＳＯ４ － ０－２５ ％ 苯羟乙酸－ ３ ％ ＫＣ１Ｏ３ 底液体系中, 钼有一个灵敏的极谱催化波, 用于测定临床样品中的Ｍｏ , 其峰电位－ ０－３０ Ｖ（ 对Ｓ－Ｃ－Ｅ） 。２３ 种共存离子的含量低于允许存在量, 不干扰测定。方法的检出限１－４ ×１０ － １０ ｇ／ｍＬ, 线性范围０－００１ ～０－５００ ｍｇ／Ｌ, １１ 次测定的相对标准偏差为１－８９ ％ ～３－４２ ％ , 标准回收率９７－２ ％ ～１０２－８ ％ 。方法简便、快速。测定了西宁市３５ 例分娩孕妇全血、新生儿脐血和胎盘中的钼, 获得了理想的结果。     

Rhabdomyoma of the true vocal fold

Rhabdomyomas of the larynx are exceedingly rare. The incidence, sites of occurrence in the larynx, and treatment of these benign striated muscle tumors are reviewed. A case of rhabdomyoma involving the vocalis muscle is presented with magnetic resonance imaging and video-stroboscopic documentation.     

Evaluation of Traumatic Spinal Cord Injury in a Rat Model Using 99mTc-GA-5 as a Potential In Vivo Tracer

Spinal cord injury (SCI) refers to the damage suffered in the spinal cord by any trauma or pathology. The purpose of this work was to determine whether ^99mTc-GA-5, a radiotracer targeting Glial Fibrillary Acidic Protein (GFAP), can reveal in vivo the reactivation of astrocytes in a murine model with SCI. A method for the ^99mTc radiolabeling of the mouse anti-GFAP monoclonal antibody GA-5 was implemented. Radiochemical characterization was performed, and radioimmunohistochemistry assays were used to evaluate the integrity of ^99mTc-GA-5. MicroSPECT/CT was used for in vivo imaging to trace SCI in the rats. No alterations in the GA-5’s recognition/specificity ability were observed after the radiolabeling. The GA-5’s radiolabeling procedure implemented in this work offers a practical method to allow the in vivo following of this monoclonal antibody to evaluate its biodistribution and specificity for GFAP receptors using SPECT/CT molecular imaging.     

原子吸收光谱法测定新生儿脐血中微量金属元素

将样品用硝酸消解预处理后,用原子吸收光谱法测定新生儿脐血中微量金属元素Fe、Zn、Cu、Ca、Mg。对酸介质浓度、共存元素的干扰等进行了探讨,该方法的平均加标回收率为94．9％～101．3%。Fe、Zn、Cu、Ca、Mg测定结果的相对标准偏差分别为0．70％、4．70％、5．26%、3．54％、1.10%。