Analytical study of ionized or ionizable groups of platelet membrane

Summary The knowledge of the molecular surface groups of the human blood platelets present a particular interest especially in some thrombotic processes or thrombocytopathies. The aim of this study was to approach quantitatively ionized or ionizable groups of the platelet membrane using liquid phase electrophoresis or physicochemical and analytical methods with specific reagents. A mean repartition of the principal groups (carboxyl, SH, amino and phosphate) on the membrane is obtained by cell electrophoresis.This work was supported by D.R.M.E., Biological Section, Grant 76.34.146.00.480.75.01     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

Racial/ethnic preferences, sex preferences, and perceived discrimination related to end-of-life care

This study investigated racial/ethnic preferences, sex preferences, and perceived discrimination related to end-of-life care. Ten focus groups and a follow-up survey were conducted to obtain in-depth information on end-of-life preferences across five racial/ethnic groups in Michigan stratified by sex. There were 73 focus group participants, including Arab Muslims, Arab Christians, Hispanics, blacks, and whites. The mean age+/-standard deviation was 67+/-8.5 (range 50-83). A focus group screener was used to recruit participants. A moderator discussion guide was used to guide the focus groups. A take-home questionnaire asked about demographic information and end-of-life issues. Arab Americans were in favor of making peace on earth and were against assisted suicide, extending life artificially, nursing homes, and telling the patient "bad news." Hispanic and black women were against assisted suicide and in favor of extending life, whereas the men in these groups felt the opposite. Hispanic women spoke of not wanting a feeding tube and would consider alternative medicine. Blacks were least opposed to nursing homes. For whites, it was important to have choices. When asked about discrimination related to end-of-life care, Muslim women spoke of cultural barriers, blacks spoke of inequities in the past, and whites spoke of age discrimination and abandonment when dying. As the population becomes more diverse and continues to age, it will be important to provide culturally and sex-sensitive end-of-life interventions to increase patient/family satisfaction and allocate resources appropriately.     

Four Examples of Bhm Blood in One Family

Abstract. During routine blood grouping, the patient's (L.S.) red cells typed as group O, but the serum lacked anti-B agglutinins. Further investigation revealed that the red cells had no H antigen but did have a weak expression of B. The saliva contained both B and H in amounts comparable to normal B. Family studies provided evidence that this rare phenotype, designated B^h_m, is recessive, dependent on a genetic locus possibly independent of, but linked to, the ABO locus.     

Red cells from the original JAL+ proband are also DAK+ and STEM+

Background The low‐prevalence Rh antigen, JAL, was named after the index case, Mr. J. Allen. Based on reactivity of seven multi‐specific sera with his RBCs, it was apparent that they express at least one additional low‐prevalence antigen. The purpose of this study was to investigate the other low‐prevalence antigen(s) on J. Allen’s RBCs. Methods Blood samples and reagents were from our collections. Hemagglutination and DNA analyses were performed by standard methods. Results Our DNA analyses confirmed the presence of RHCE*ceS(340T) in J. Allen and revealed the presence of RHCE*ceBI (ce 48C, 712G, 818T, 1132G) and RHD*DOL (509T, 667T). RBCs from J. Allen were agglutinated by anti‐JAL, anti‐STEM, and anti‐DAK. Two of the reactive multi‐specific sera reported in the original paper reacted with RBCs from J. Allen, and with RBCs from four other people with RHCE*ceBI, including the original STEM+ index case (P. Stemper) but not with RBCs with the DIIIa, DAK+ phenotype. We conclude that they contain anti‐STEM. Conclusion J.Allen’s RBCs express the low‐prevalence Rh antigens, JAL, V/VS (extremely weakly), STEM, and DAK. The presence of JAL on the variant Rhce, RhceJAL (16Cys, 114Trp, 245Val), STEM on the variant Rhce, RhceBI (16Cys, 238Val, 273Val, 378Val), and DAK on the variant RhD (170Thr, 223Val), encoded by RHD*DOL in trans to RHCE*ceBI is consistent with expression of these antigens. When J. Allen RBCs are used to detect and identify an anti‐JAL, it is important to remember that they also express STEM and DAK.     

高校教职工职业紧张与血脂的关系

目的 探讨云南省高校教职工职业紧张(付出-回报失衡模式)与血脂的关系.方法 运用中文版的付出.回报失衡问卷对云南省某高校1244名在职教职工进行职业紧张测评,并同时对血清脂类进行了检测.结果 调整了相关因素后,在男性中,高外在付出组出现血清甘油三酯增高的危险性比低外在付出组增加了3.5倍(OR=3.45,95%CI:1.32～9.04),高内在投入组出现血清低密度脂蛋白胆固醇增高的可能性比低内在投入组增加了2.9倍(OR=2.86,95%CI:1.03～7.96).随着职业紧张(付出-回报比)的增大,出现高血清甘油三酯的危险性也逐渐增加,与处于低职业紧张状态的教职工相比,中等职业紧张状态的教职工发生高血清甘油三酯的危险性增高了3.5倍(OR=3.43,95%CI:1.24～9.53),而高职业紧张状态的教职工发生高血清甘油三酯的危险性则增高到4倍(OR=4.16,95%CI:1.42～12.17).在女性中,这种相关性不明显.结论 职业紧张(付出-回报失衡模式)与血脂异常相关.     

海南省特定人群梅毒感染情况调查分析

目的通过调查掌握目前海南省梅毒的发病趋势和流行特点,为政府部门制定防治政策提供科学依据.方法用RPR筛检,TPHA核实,于1999年9月～2000年5月对海南省四类特定人群共15 999名(其中无偿献血员10 098名,饮服业从业人员4921名,妇教所收教卖淫妇女560名,戒毒所吸毒人员420名)进行了梅毒感染情况调查.结果 15 999名受检人员中,共查出梅毒感染者199名,阳性率1.24%;无偿献血员、饮服业从业人员、卖淫妇女、吸毒人员中梅毒阳性率分别为0.39%、0.61%、18.04%、6.90%;其中卖淫妇女和吸毒人员梅毒阳性率明显高于其它两组.结论海南省梅毒发病大幅增加,并正以卖淫妇女和吸毒者为核心人群向普通人群蔓延流行,加强梅毒控制已刻不容缓.     

Statistical mechanics for natural flocks of birds

Flocking is a typical example of emergent collective behavior, where interactions between individuals produce collective patterns on the large scale. Here we show how a quantitative microscopic theory for directional ordering in a flock can be derived directly from field data. We construct the minimally structured (maximum entropy) model consistent with experimental correlations in large flocks of starlings. The maximum entropy model shows that local, pairwise interactions between birds are sufficient to correctly predict the propagation of order throughout entire flocks of starlings, with no free parameters. We also find that the number of interacting neighbors is independent of flock density, confirming that interactions are ruled by topological rather than metric distance. Finally, by comparing flocks of different sizes, the model correctly accounts for the observed scale invariance of long-range correlations among the fluctuations in flight direction.     

大骨节病患儿与非患儿血中硒和巯基关系的对比研究

测定了大骨节病患儿血浆总巯基，非蛋白巯基．蛋白结合巯基和全血硒含量，并与病区非患儿和非病区儿童进行对比研究．结果表明，大骨节病重病区儿童（包括患儿组和非患儿组）体内三种血浆巯基和血硒含量都低于消退病区及非病区儿童，而以大骨节病患儿组下降最明显（Ｐ＜０．０１或＜０．０５）。血硒与三种巯基的相关分析仅在大骨节病患儿组显示出有意义的正相关关系．说明大骨节病患儿血浆巯基的减少与硒缺乏有关，提示患儿体内抗氧化防御系统受损。     

Osmotic Erythrocyte Fragility and ABO Blood Groups

In a study of 1008 blood donors a reduced frequency of blood group A and an increased frequency of blood group O were observed in those with increased osmotic fragility of their red cells.     

Electron Beam Irradiation of Cellulosic Materials—Opportunities and Limitations

The irradiation of pulp is of interest from different perspectives. Mainly it is required when a modification of cellulose is needed. Irradiation could bring many advantages, such as chemical savings and, therefore, cost savings and a reduction in environmental pollutants. In this account, pulp and dissociated celluloses were analyzed before and after irradiation by electron beaming. The focus of the analysis was the oxidation of hydroxyl groups to carbonyl and carboxyl groups in pulp and the degradation of cellulose causing a decrease in molar mass. For that purpose, the samples were labeled with a selective fluorescence marker and analyzed by gel permeation chromatography (GPC) coupled with multi-angle laser light scattering (MALLS), refractive index (RI), and fluorescence detectors. Degradation of the analyzed substrates was the predominant result of the irradiation; however, in the microcrystalline samples, oxidized cellulose functionalities were introduced along the cellulose chain, making this substrate suitable for further chemical modification.