Traumatic esophageal rupture: unusual cause of acute mediastinal widening

We have presented the case of a 32-year-old man who sustained blunt trauma to the chest in a motor vehicle accident. Plain roentgenograms showed a widened mediastinum and pneumomediastinum, and an esophagogram with water-soluble contrast material showed an esophageal laceration at the T-4 level.     

WHAT PROGRAM ANNOUNCEMENTS ARE CURRENTLY OPEN AT THE NIGMS? WHO ARE THE CONTACT PEOPLE? HOW CAN I GET MORE INFORMATION?

Pharmaceutical Research -     

吡那地尔对高血压心脏结构和功能重构的影响

在等降压剂量下吡那地尔和赖诺普利可使４月龄自发性高血压大鼠的血压下降６．０￣８．０ｋＰａ，并接近同种属正常血压大刀瓣血压水平。     

Introns and gene evolution

In one scenario of gene evolution, exon shuffling has a fundamental role in increasing gene diversity. As DNA sequences accumulate in the databases, the picture of the intron/exon structures of genes becomes more and more clear. We discuss in this review some features of this picture that suggest that introns have been present since the early stages of evolution, and that exon shuffling was a fundamental process in the construction of ancient as well as modern genes.     

Clinical pathology consultation improves coagulation factor utilization in hospitalized adults

Coagulation factor replacement can effectively treat or prevent most hemophilia complications, but it is expensive. Although published data describe how to achieve therapeutic goals through cost-effective selection and dosing of replacement products, criteria are not universally known or followed. A review of our institution's experience revealed overdosing of coagulation factors in the majority of patients treated during a 12-month period, at a cost that approached $700,000. Consequently, we established mandatory clinical pathology consultation before releasing such factors. In the subsequent 30 months, 32 adults received 64 courses of treatment. For patients with hemophilia A, the mean cost per admission was reduced by approximately 27% (total savings, $61,536). For patients with factor VIII inhibitor, there was an approximate 6% cost reduction (total savings, $47,292). The combined savings was $108,828. The mean plasma factor level achieved during the intervention period was 84% +/- 55% compared with 117% +/- 58% for the preintervention period (P = .008). Neither the number of treatment (factor transfusion) days nor the number of RBC transfusions changed significantly. Our data support that pathology consultation yields consistent and appropriate therapy and improves resource utilization.     

企业员工应激源的因素结构研究

目的 :该研究旨在确立企业员工应激源的因素结构。方法 :经过对 394 6名被试的探索性因素分析 ,提出企业员工应激源的 9因素结构。结果 :因素分别命名为职业发展、住房问题、工作特征、社会环境、人际关系、经济收入、子女问题、组织气氛和夫妻关系。结论 :企业员工应激源的 9因素结构获得了验证性因素分析的支持。     

Hybridization studies of cultured human pituitary prl and gh producing adenoma cells: Effects of thyrotropin-releasing hormone,somatostatin, and phorbol ester

The effects of the hypothalamic hormones, thyrotropin-releasing hormone (TRH), and somatostatin (SRIH), and of phorbol 12-myristate 13-acetate (PMA) on PRL and GH secretion and messenger RNA (mRNA) levels were analyzed in 10 GH and/or PRL producing adenomas after culturing the tumor cells in the presence of these secretagogues for 7 days. The expression of chromogranin A and B mRNAs was also examined. All four of the clinically diagnosed GH adenomas expressed or secreted both GH and PRL while four of six clinically diagnosed prolactinomas produced or secreted both PRL and GH. Prolactinomas had less than 10% of tumor cells expressing chromogranin A mRNA while more than 40% of the adenoma cells expressed chromogranin B mRNA. TRH stimulated PRL secretion and increased PRL mRNA levels while SRIH decreased GH secretion and mRNA expression in some cases. Unexpectedly, PMA stimulated PRL mRNA levels four- to sevenfold above control levels in two adenomas and generally stimulated chromogranin A and B mRNA expression but not GH mRNA, as determined by Northern hybridization and in situ hybridization analyses. These results indicate that cultured prolactinoma cells express significantly more chromogranin B mRNA than chromogranin A mRNA, and that PMA increases PRL mRNA expression in some prolactinomas, although the effect of PMA on various adenomas reflects the heterogeneity of these tumors with respect to protein kinase C stimulation.     

采用纱球进行口腔护理的效果观察

目的探寻有效的口腔护理方法,取得更好的清洁口腔及洁牙效果。方法随机对53例有口腔护理适应症、意识清醒的患者,用纱球或棉球分别作左或右侧牙齿及口腔粘膜的清洁护理,并按同一标准进行效果评价。结果53例患者,以纱球擦洗侧,效果好的为42例,一般为11例,差为0例。以棉球擦洗侧,效果好为13例,效果一般为40例,差为0例,两组效果比较有显著性差异(P<0.01)。结论以纱球作口腔护理的清洁效果明显优于棉球的清洁效果。