Expression of a G-protein {beta} subunit-related gene during lymphocyte activation

Using a subtractlve strategy, we have cloned an activation-relatedgene from a human B cell cDNA library. Sequence analysis revealedthat this gene was identical to H12.3, a gene belonging to anexpanding family of guanlne nucleotlde-blndlng protein ßsubunlts. The expression of H12.3 was induclble in the latephase of mltogen-stlmulated T and B cells. In T cells, IL-2and IL-4 by themselves had no direct effect on the expressionof H12.3, but they could augment the level of steady-state H12.3mRNA stimulated by phytohemagglutlnln. On the other hand, IFN-and IL-6 had no obvious effect on the expression in B cellswith or without Staphytococcus aureus Cowan l-stlmulatlon. CyclosporinA, a strong immunosuppressant, Inhibited the mltogen-stlmulatedexpression of H12.3, but rapamycin, another such agent, didnot. In synchronized Jurkat cells, the expression of H12.3 hadno cell cycle-dependent decrease in S and G₂/M phase, whilecyclin E, which controls the progression of the cell cycle unlate G₁ phase, did show a periodic expression pattern. The resultssuggest that H12.3 might be involved in regulation of lymphocyteactivation.     

Genetic alterations in primary and secondary hyperparathyroidism

Hyperparathyroidism refers to a term representing a wide spectrum of parathyroid disorders that are characterized by the increased production of parathyroid hormone. Hyperparathyroidism was once thought to be tare but is now more commonly recognized, aifecting 1 in 500 women over 40 years of age. Yet the interpretation of parathyroid pathology is still controversial and confusing. Over the past 10 years, genetic changes ( ret and menin genes) involved in the pathogenesis of MEN 2 and MEN 1 have been discovered in succession. Different mutations of the calcium-sensing receptor gene have been identified in neonatal severe hyperparathyroidism and familial hypocalciuric hypercal-cemia, respectively. The HRPT 2 gene responsible for the development of heredltaty hyperparathyroidism and jaw tumors has been localized on the 1q21–31 locus. Several genetic alterations have also been characterized in primary and secondary hyperparathyroidism. Different genetic alterations appear to involve the development of different types of hyperparathyroidism. These novel advances give us new insights into the pathogenesis of hyperparathyroidism and allow better differentiation between the different types of parathyroid disorders.     

Organ distribution of severe acute respiratory syndrome (SARS) associated coronavirus (SARS-CoV) in SARS patients: implications for pathogenesis and virus transmission pathways

We previously identified the major pathological changes in the respiratory and immune systems of patients who died of severe acute respiratory syndrome (SARS) but gained little information on the organ distribution of SARS-associated coronavirus (SARS-CoV). In the present study, we used a murine monoclonal antibody specific for SARS-CoV nucleoprotein, and probes specific for a SARS-CoV RNA polymerase gene fragment, for immunohistochemistry and in situ hybridization, respectively, to detect SARS-CoV systematically in tissues from patients who died of SARS. SARS-CoV was found in lung, trachea/bronchus, stomach, small intestine, distal convoluted renal tubule, sweat gland, parathyroid, pituitary, pancreas, adrenal gland, liver and cerebrum, but was not detected in oesophagus, spleen, lymph node, bone marrow, heart, aorta, cerebellum, thyroid, testis, ovary, uterus or muscle. These results suggest that, in addition to the respiratory system, the gastrointestinal tract and other organs with detectable SARS-CoV may also be targets of SARS-CoV infection. The pathological changes in these organs may be caused directly by the cytopathic effect mediated by local replication of the SARS-CoV; or indirectly as a result of systemic responses to respiratory failure or the harmful immune response induced by viral infection. In addition to viral spread through a respiratory route, SARS-CoV in the intestinal tract, kidney and sweat glands may be excreted via faeces, urine and sweat, thereby leading to virus transmission. This study provides important information for understanding the pathogenesis of SARS-CoV infection and sheds light on possible virus transmission pathways. This data will be useful for designing new strategies for prevention and treatment of SARS.     

Expression of Cytochrome P450nor in Escherichia coli , Purification and Preparation of Polyclonal Antibodies

The term “cytochrome P450” was characterized of aunique 450 nm optical absorption peak of its carbon mon oxide bound form. Cytochrome P450s constitute a super gene family of heme containing proteins that are involvedin the metabolism of a variety o…     

大鼠催乳素瘤形成过程中催乳素基因的表达

给ＳＤ大鼠皮下埋植内含１７β－雌二醇硅橡胶管３０、６０、１２０天后，发现大鼠垂体重量随给药时间延长呈持续性增加；用放射免疫法测定血浆催乳素含量，亦依次明显升高；用Ｎｏｒｔｈｅｒｎ印迹杂交方法检测垂体细胞中ＰＲＬ基因，发现ＰＲＬ ｍＲＮＡ含量也依次显著增加，但其增加却远低于血浆ＰＲＬ含量的增加，提示β－雌二醇除了促进ＰＲＬ基因的转录外，还可能增加ＰＲＬ ｍＲＮＡ的翻译效率。     

支气管肺发育不良基因表达调控异常研究进展

支气管肺发育不良(BPD)是早产儿最常见的慢性肺部疾病。BPD由多种因素引起,其本质是在遗传易感性的基础上,各种环境因素引起的肺损伤和发育中的未成熟肺修复之间的不平衡。研究显示BPD致病分子机理多涉及炎症细胞因子、非编码RNA和各种信号通路因子的异常表达调控。这些相关基因的异常表达,不仅影响了胚胎或早期胎儿肺的正常发育,并阻碍了新生肺损伤后肺的修复,或导致肺功能不全。单独或协同影响了BPD的发生发展。同时研究发现环境风险因素如高氧暴露、炎症导致基因表达异常也是BPD发生的原因之一,环境和基因共同作用推动了BPD的发生发展。     

黄芪-当归药对益气活血作用的药效物质基础

目的：探讨黄芪-当归药对（3∶1）对气虚血瘀模型大鼠的益气活血作用,从特征图谱、药效物质辨识、入血成分对比三方面入手,为临床合理用药及复方药效物质辨识与质量控制提供理论依据。方法：使用高效液相色谱法（HPLC）建立黄芪-当归（3∶1）指纹图谱,采用超高效液相色谱-四级杆-静电场轨道阱联用技术（UPLC-Q-Exactive Orbitrap-MS）分析水煎液成分;选用SPF级成年雄性Wistar大鼠,随机分为空白组、模型组、黄芪-当归3∶1组及黄芪-当归5∶1组,每日通过控制食量及凉水游泳制备气虚血瘀模型,同时各组每天给药（水）1次,给药组剂量10.2 g·kg-1,模型组和空白组给予等量的蒸馏水,连续15 d。观察大鼠一般状况;记录各组大鼠体质量,全血及血浆黏度,胸腺指数和脾脏指数,血清中三磷酸腺苷（ATP）、二磷酸腺苷（ADP）、大鼠血管性血友病因子（vWF）水平及ATP/ADP值;苏木素-伊红（HE）及扫描电镜观察血管内皮形态;UPLC-QExactive Orbitrap-MS分析血清中的原型及代谢成分。结果：建立了黄芪-当归（3∶1）指纹图谱;UPLC-Q-Exactive ...     

A Multidisciplinary,Community-Based Program to Reduce Unplanned Hospital Admissions

ObjectivesTo evaluate the effect of Hospital Admission Risk Program (HARP) on unplanned hospitalization, bed days, and mortality of enrolled individuals and to evaluate the cost-effectiveness of HARP.DesignA retrospective longitudinal analysis of hospital administrative data.InterventionIndividuals at risk of hospitalization were provided with multidisciplinary, community-based care support managed by care coordinators including integrated care planning, education, monitoring, service linkages, and general practitioner liaison over 6-9 months.Setting and ParticipantsIndividuals who were enrolled into 1 of 8 HARP chronic disease management programs between July 1, 2017, and June 30, 2018, at the Royal Melbourne Hospital, Australia.MethodsHospital admissions between 18 months before and 18 months after HARP enrollment were analyzed. Total hospital costs were compared between 18 months before and 12 months after HARP enrollment.ResultsA total of 1553 individuals with a median age of 71 years (interquartile range 60-81), 63.4% males, were admitted to HARP. Both unplanned hospitalizations and bed days were reduced during the HARP intervention compared to within 3 months before enrollment in each of the HARP management programs. After the HARP intervention, cardiac coach, cardiac heart failure, chronic respiratory, diabetes comanagement, and medication management programs had higher hospitalizations and bed days than individuals’ baseline of at least 3 months before HARP enrollment. Individuals in cardiac heart failure and chronic respiratory management programs had a higher mortality rate than other HARP chronic disease management programs. Individuals in cardiac coach, diabetes comanagement, and medication management programs had lower hospital costs during the HARP intervention compared to within 3 months before HARP enrollment.Conclusions and ImplicationsHARP reduced unplanned hospitalization and bed days but did not return individuals’ hospital use to baseline before the intervention. The variations in mortality between HARP chronic disease management programs implies that condition-specific goals between programs is preferable.     

儿童心理问题的家庭治疗原则与策略

儿童心理问题的常规治疗包括心理治疗和药物治疗,但是两者具有一定的局限性和社会不适性。家庭对儿童的成长具有重大影响,也是儿童出现心理问题的重要源头,所以家庭的介入对于心理问题儿童的治疗非常关键。家庭治疗的主要原则包括培养儿童的独立性、解决儿童与外界之间的冲突以及重视家庭成员间的和谐关系。家庭治疗所采取的策略主要是转变家庭内部态度、重视家庭的整体性、心理治疗和家庭治疗的互相配合以及对医学诊断的重视。在专业医学诊断指导下,通过家庭介入传统的心理治疗,从而更好地改善儿童所面临的心理问题。本文回顾了现有的儿童心理问题的研究成果,强调了家庭对儿童心理问题的影响,总结了儿童心理问题的家庭治疗原则和策略。     

重点高中生的心理状态与高考成绩的相关性研究

目的;了解重点高中学生的心理状态与高考成绩之间的关系。方法：以398例应届生为对象,应用16PF人格测验,气质测量工具（STI,TTI）及焦虑自评量表（SAS）,对考生进行测试分析,结果：文理科学生的16PF的人格特质有明显的差别,判别分析和多因素回归分析显示16PF人格特质中的Q1因素（实验性F＝8．76,P＜0．01）,Q2因素（独立性F＝8．23,P＜0．01）,与高考成绩呈正相关,与M因素（幻想性F＝4．88,P＜0．01）,呈负相关;气质中的神经过程灵活性（F＝8．15,P＜0．01）和时间特质中的灵活性（F＝12．36,P＜0．01）与高才成绩呈正相关。结论：高考生的实验性,独立性高分及幻想性低分的个性特质和气质上的灵活性有助于高考成绩的发挥,学生文理科分班宜参考学生人格特质这一特点,。