Translating clinical and patient-reported data to tailored shared decision reports with predictive analytics for knee and hip arthritis

Quality of Life Research - New informatics tools can transform evidence-based information to individualized predictive reports to serve shared decisions in clinic. We developed a web-based system...     

单片微机化微弱发光测量仪及其在肿瘤研究中的初步应用

单片微机化微弱发光测量仪由中科院生物物理所和北京科龙生物医学技术开发公司研制成功。该仪器适用于肿瘤研究中生物医学样品的微弱发光的测量。测量样品的重复性优于０．８％，稳定性优于０．５％，线性相关系数达０．９９９７，不仅可以进行样品的发光强度测量，还可以进行动力学曲线的测量以及样品发射光谱的测量。光谱在４００ｎｍ－７５０ｎｍ范围内。测量方式可选择手动、半自动和自动计时三种。测量结果表明，荷瘤裸鼠血液微     

Valid estimation of IL2 secretion by PHA-stimulated T-cell clones absolutely requires the use of anti-CD25 monoclonal antibody to prevent IL2 consumption.

A major problem encountered for quantification of IL2 production by stimulated T cells is its simultaneous consumption by these activated cells. In the present study, 40 T-cell clones (TCC) derived from normal peripheral blood, hyperplastic lymph nodes (LN) or lymph nodes involved by malignant lymphomas, were studied for their ability to produce IL2. When supernatants were generated in the presence of 20% fetal calf serum (FCS), no IL2 could be detected for 22 of the 40 TCC, whereas very low levels were found for the 18 other TCC (mean value 31 pg/ml; range from 10 pg/ml to 114 pg/ml); in contrast, when conditioned media were produced with reduced amounts of FCS (final concentration, 1%) as well as in the presence of an anti-CD25 monoclonal antibody (final concentration, 50 micrograms/ml), all TCC were found to release IL2, and very high quantities of this lymphokine were measured (mean value: 11,387 pg/ml; range, from 250 pg/ml to 37,000 pg/ml). Consequently, inhibition of IL2 consumption by PHA-stimulated TCC seems to be an absolute requirement for estimating the true capacity of T cells to produce this lymphokine.     

PII component of the toad electroretinogram.

1. The PII component of the electroretinogram (ERG) is comprised of the b-wave and the DC component and is thought to reflect bipolar cell activity. Although the b-wave is generated in large part by a K+/Müller cell mechanism, the origin of the DC component is unclear. In this paper we detail our investigation of the origin of the DC component. We hypothesize that the DC component is generated by a K+/Müller cell mechanism identical to that involved in b-wave generation. 2. We studied the ERG in the dark-adapted, isolated retina preparation of the toad, Bu fo marinus. We used K+ ion-sensitive microelectrodes (K+ISM), as well as conventional intra- and extracellular microelectrodes, to record [K+]o changes, the vitreal ERG, and Müller cell responses. 3. We used the excitatory amino acid receptor agonist N-methyl-DL-aspartate (NMDLA) to inhibit light responses of third-order neurons and thereby eliminate most of the ERG M-wave. In the absence of the M-wave, the ERG consisted of PII and PIII. We then superfused the retina with a solution containing both kynurenic acid (KYN) and 2-amino-4-phosphonobutyric acid (APB), which together inhibit all retinal responses proximal to the photoreceptors. In the presence of KYN and APB, the ERG consisted only of PIII. Using digital subtraction, we reconstructed PII. To our knowledge, this is the first report of the isolation of a PII component in the ERG of a nonmammalian species. 4. Using K+ISMs, we recorded the distal K+ changes in the outer plexiform layer (OPL).(ABSTRACT TRUNCATED AT 250 WORDS)     

吡啶斯的明试验对评价垂体hGH储备功能的价值

垂体hGH分泌受中枢神经介质调控。兴奋胆碱能系统可使hGH增加。本文试用胆碱酯酶抑制剂吡啶斯的明兴奋hGH,并与胰岛素兴奋试验进行比较,观察了13名正常青少年和10名垂体性侏儒症患者对两种兴奋试验的反应。结果显示口服吡啶斯的明2mg/kg体重能迅速有效地兴奋垂体hGH释放。其作用较胰岛素兴奋试验更强,是一项值得推荐的判定青少年垂体hGH储备功能的试验。     

乳腺癌组织中—p—MAPK活化对c—fos和c—jun的激活作用

OBJECTIVE: This paper was to investigate the relationship between expression of p-MAPK and oncogenesis of breast cancer. METHODS: Immunohistochemical technique was used to detect the expression of p-MAPK and c-fos and c-jun proteins in 68 cases of breast cancers, 42 cases of pericarcinomatous tissues and 7 cases of normal breast tissues. RESULTS: Positive stainings of p-MAPK, c-fos, and c-jun were localized in cancer cell nuclei. The positive rates of p-MAPK, c-fos, and c-jun were 86.8% (59/68), 82.4% (56/68), and 77.9% (53/68), respectively, which were much higher than that in pericarcinomatous tissues (P < 0.01). Of some cases, p-MAPK positive staining was also found in the nuclei of the fibroblastic and angioendothelial cells of cancer stroma. CONCLUSION: Activated or overexpressive MAPK activates the immediately-early oncogenes(c-fos, c-jun), which might play an important role in carcinogenesis of breast cancer and be an early event of oncogenesis of breast cancer.