甲状腺疾病患者血清可溶性白细胞介素2受体测定的临床意义

某些甲状腺疾病时血清可溶性白细胞介素２受体（ｓＩＬ－２Ｒ）水平及其与游离甲状腺素（ＦＴ＿４）、游离三碘甲腺原氨酸（ＦＴ＿３）和促甲状腺素（ＴＳＨ）水平的相关性比较。结果发现甲状腺机能亢进症（甲亢）未治疗组（Ａ）及甲亢未治疗伴突眼组（Ｄ）血清ｓＩＬ－２Ｒ明显升高；甲状腺机能减退症（甲减）经治疗甲状腺功能灭常组（Ｇ）ｓＩＬ－２Ｒ明显高于甲减未治疗组（Ｆ）；１０例毒性弥漫性甲状腺肿（Ｇｒａｖｅｓ病）患者经抗甲状腺药物治疗后ｓＩＬ－２Ｒ明显降低；Ｇｒａｖｅｓ病及甲减患者血清ｓＩＬ－２Ｒ均与ＦＴ＿３呈正相关。提示除自身免疫外，甲状腺素水平也是甲状腺疾病患者血清ｓＩＬ－２Ｒ水平的重要调节因素。     

PPARgamma knockdown by engineered transcription factors: exogenous PPARgamma2 but not PPARgamma1 reactivates adipogenesis.

To determine functional differences between the two splice variants of PPARgamma (gamma1 and gamma2), we sought to selectively repress gamma2 expression by targeting engineered zinc finger repressor proteins (ZFPs) to the gamma2-specific promoter, P2. In 3T3-L1 cells, expression of ZFP55 resulted in >50% reduction in gamma2 expression but had no effect on gamma1, whereas adipogenesis was similarly reduced by 50%. However, ZFP54 virtually abolished both gamma2 and gamma1 expression, and completely blocked adipogenesis. Overexpression of exogenous gamma2 in the ZFP54-expressing cells completely restored adipogenesis, whereas overexpression of gamma1 had no effect. This finding clearly identifies a unique role for the PPARgamma2 isoform.     

The New Millennium Palliative Care Project (2000-2003): the impact of specialised GP advisors.

This study describes a novel type of support for GPs caring for patients dying at home: the establishment and evaluation of a telephone advisory service for GPs, run by GPs with a special interest in palliative care (GPwSIs) in the Netherlands 2000-2003. A growing number of GPs called for advice, 10% during out of hours. Prognosis of the patients was generally short (days to weeks in 70% of cases). Most advice sought by GPs concerned symptom management and on evaluation, 85% of the GPs followed the advice.     

高压氧治疗重度颅脑损伤后临床、脑电地形图及预后的探讨

目的:探讨高压氧治疗重度颅脑损伤的疗效。方法:重度颅脑损伤患者35例为治疗组,20例为对照组,观察高压的氧治疗前后临床、脑电地形图的变化及预后。结果:治疗组临床(GCS)、脑电地形图及预后经高压氧治疗后均明显改善,而对照组改善不明显。结论:高压氧能够明显改善重度颅脑损伤患者的临床,脑电地形图及预后。     

Reproductive genetic counselling in non-mosaic 47,XXY patients: implications for preimplantation or prenatal diagnosis: Case report and review

With an incidence of approximately 1 in 500 male newborns, the 47,XXY genotype is one the most common sex chromosome anomalies. It is also the most frequent genetic cause of human infertility. Some non-mosaic 47,XXY patients have sperm production which allows infertility treatment to be offered by ICSI. Therefore, the risk of transmitting a chromosome anomaly to the next generation is an important problem in reproductive genetic counselling of these patients. Here, we report on a twin pregnancy where two karyotypically normal neonates 46,XX and 46,XY were born after the use of ICSI in assisted reproduction of a patient with a non-mosaic 47,XXY syndrome. To date, only 38 evolving pregnancies including the present cases, have been reported after ICSI using sperm from non-mosaic 47,XXY patients. Although these data are scarce, they suggest that the risk of chromosome anomaly in the offspring of these patients is low; hence, their reproductive genetic counselling can be reassuring, and management of the pregnancy can proceed with caution.     

243例健康人血红细胞悬浮液射频介电特性的研究

本文应用同轴传输线反射法建立的细胞悬浮液介电测量系统，测量了２４３例健康人（男１２０，女１２３名）血红细胞悬浮液在１～５００ＭＨｚ频率范围的介电常数和电导率。结果表明不同性别和不同血型之间的红细胞悬浮液的介电参数无显著差异。将１９～８０岁之间的受试者按１０岁年龄间隔分成六个组，探讨年龄差别对介电参数的影响；发现５０岁左右是人红细胞介电参数有显著差异的临界年龄，４９岁后三个高年龄组的介电参数显著地低于４９岁前的三个低年龄组的数值（Ｐ＜０．０５）。本文的结果证明年龄对人血红细胞的介电参数有明确的影响。     

Association between attention deficit hyperactivity disorder and the DXS7 locus

Attention deficit hyperactivity disorder (ADHD) is a prevalent disorder in children. The etiology of this disease is not clear. Genetics studies have suggested the involvement of the dopamine DRD-4 receptor gene and dopamine transporter gene (DAT1). Clinical studies have shown that monoamine oxidase-B (MAO-B) inhibitors are effective in the treatment of ADHD. These findings suggest that monoamine oxidase (MAO) genes might be involved in the origin of ADHD. In the present work, the DXS7 locus of chromosome X, which is closely linked to MAO genes, was selected as a marker to study the possible association between ADHD and MAO genes in the Chinese population. Haplotype-based haplotype relative risk (HHRR) and the transmission disequilibrium test (TDT) methods were employed to analyze the association and the linkage disequilibrium, respectively. Significant association (X(2) = 15.86; 1 df; P < 0.001) and linkage (X(2) = 14.88; 1 df; P < 0.001) were detected between the 157-bp allele of the DXS7 locus and the DSM-III-R-diagnosed ADHD (N = 72) in trios composed of father, mother, and affected offspring. The data suggested that ADHD was associated and in linkage with DXS7 locus.     

Bacterial superantigen-treated intestinal epithelial cells upregulate heat shock proteins 25 and 72 and are resistant to oxidant cytotoxicity

While the pathological events evoked by infection are commonly described, effective host responses to bacteria and their products should primarily be protective. Heat shock protein (Hsp) expression is upregulated by many stimuli and serves to maintain intracellular protein integrity. The ability of the prototypic superantigen, Staphylococcus aureus enterotoxin B (SEB) to induce Hsps was investigated with BALB/c mice and by in vitro addition to the murine small intestinal epithelial cell line MSIE. SEB-treated (5 or 100 microg intraperitoneally) mice revealed increased Hsp25 and Hsp72, but not Hsc73, in jejunal lymphocytes and epithelial cells. A similar Hsp response to SEB occurred in MSIE cells and was preceded by activation of the ERK1/2 and p38 mitogen-activated protein kinases but not the SAPK/JNK pathway; pharmacological inhibition of ERK1/2, but not p38, significantly reduced SEB-induced Hsps. Moreover, SEB-treated MSIE cells were protected against oxidant-induced cytotoxicity (measured by 51Cr release) and F-actin depolymerization. Thus, SEB exposure results in a rapid induction of the Hsp25 and Hsp72 in intestinal epithelial cells, both directly and through lymphocyte activation, and we suggest that this event is important in protecting the gut from damage by Staphylococcus infection or in the reparatory process and may be a generalized response to lumen-derived bacterial toxins.     

Synergistic antimicrobial effect of cefotaxime and minocycline on proinflammatory cytokine levels in a murine model of Vibrio vulnificus infection.

BACKGROUND AND PURPOSE: Vibrio vulnificus causes primary bacteremia and necrotizing wound infection, leading to high morbidity and mortality in humans. This study aimed to evaluate the antimicrobial effect of cefotaxime and minocycline on proinflammatory cytokine levels in a murine model of V. vulnificus infection. METHODS: We investigated the dynamics of proinflammatory cytokines and their modulation by antimicrobial agents using a murine model of V. vulnificus infection. The change in cytokine levels was followed over a time course to identify the antimicrobial activity of the drugs against V. vulnificus. BALB/c female mice were challenged with an intraperitoneal infection using a clinical invasive isolate of Vv05191, and their cytokine levels were assayed over various time points. RESULTS: Serum levels of tumor necrosis factor-alpha, interleukin (IL)-1 beta, and IL-6 post-infection were found to be inoculum dose-dependent and positively correlated to the subsequent fatality rate in the infected mice. With an inoculum of 6.6 x 10(6) colony-forming units and intraperitoneal administration of cefotaxime, minocycline, or both, the serum and peritoneal fluid cytokine levels increased and then declined gradually. Comparison of the 3 antimicrobial regimens revealed that the magnitude of reduction in cytokine levels was greatest in mice treated with cefotaxime-minocycline combination. Moreover, the peritoneal fluid cytokine level in the combination group was significantly lower than that in the groups treated with minocycline or cefotaxime alone. CONCLUSIONS: The current results support the superiority of the combination therapy in treating invasive V. vulnificus infections.