David W. Johnson

Bio: David W. Johnson is an academic researcher from University of Queensland. The author has contributed to research in topics: Peritoneal dialysis & Kidney disease. The author has an hindex of 160, co-authored 2714 publications receiving 140778 citations. Previous affiliations of David W. Johnson include Minnesota Department of Transportation & Open University.

Mineral metabolism, bone histomorphometry and vascular calcification in alternate night nocturnal haemodialysis.

Abstract: Background: Poor control of bone mineral metabolism (BMM) is associated with renal osteodystrophy and mortality in dialysis-dependent patients. The authors explored the efficacy of alternate nightly home haemodialysis (ANHHD) in controlling BMM parameters and its effects on bone mineral density and histomorphometry. Methods: In this prospective observational study, 26 patients on home haemodialysis (3-5 h, 3.5-4 sessions weekly) were converted to ANHHD (6-9 h, 3.5-4 sessions weekly). Biochemical parameters of BMM at baseline, 6 and 12 months, radiological parameters at baseline and 12 months and bone histomorphometry at 12 months are described. Results: Pre-dialysis serum phosphate fell from 2.13 ± 0.65 to 1.38 ± 0.35 mmol/L; P 1000 ng/L) did not significantly improve parathyroid hormone status. Abnormal bone turnover and mineralization were present in a significant proportion of patients at 12 months but low turnover was uncommon. Vascular calcification was stabilized or improved in the majority. ANHHD compares favourably with every night and short daily therapy in relation to BMM management and may offer lifestyle advantages for patients.

Human Relations and Your Career

Abstract: I. CAREER GOALS AND ATTITUDES. 1. What This Book Is About and How to Use It. 2. Choosing Career Goals. II. COOPERATING AND LEADING. 3. Cooperating with Others. 4. Taking Leadership. III. COMMUNICATING. 5. Sending and Receiving. 6. Telling People How You Feel. 7. Controlling Your Feelings. IV. MAKING DECISIONS EFFECTIVE AND CONFLICTS BENEFICIAL. 8. Making Decisions in a Team. 9. Conflict Styles and Their Uses. 10. Resolving Conflicts through discussion. V. APPLYING INTERPERSONAL SKILLS. 11. Identifying Career and Life Goals. 12. Getting a Job and Keeping It. APPENDICES: A: To the Instructor. B: Tournament Rules. C: Instructions and Answers for Selected Exercises.

Prevention, detection and management of early chronic kidney disease: a systematic review of clinical practice guidelines.

Abstract: Aim In response to the increase in Chronic Kidney Disease (CKD) worldwide, several professional organizations have developed clinical practice guidelines to manage and prevent its progression. This study aims to compare the scope, content and consistency of published guidelines on CKD stages I-III. Methods Electronic databases of the medical literature, guideline organizations, and the websites of nephrology societies were searched to November 2011. The Appraisal of Guidelines for Research and Evaluation (AGREE) II instrument and textual synthesis was used to appraise and compare recommendations. Results One consensus statement and 15 guidelines were identified and included. Methodological rigour across guidelines was variable, with average domain scores ranging from 24% to 95%. For detection of CKD, all guidelines recommended estimated glomerular filtration rate measurement, some also recommended serum creatinine and dipstick urinalysis. The recommended protein and albumin creatinine ratios and proteinuria definition thresholds varied (>150-300 mg/day to >500 mg/day). Blood pressure targets ranged (<125/75 to <140/90 mmHg). Angiotensin converting enzyme inhibitor and angiotensin receptor blockers were recommended for hypertension, as combined or as monotherapy. Protein intake recommendations varied (no restriction or 0.75 g/kg per day-1.0 g/kg per day). Salt intake of 6 g/day was recommended by most. Psychosocial support and education were recommended by few but specific strategies were absent. Conclusion CKD guidelines were consistent in scope but were variable with respect to their recommendations, coverage and methodological quality. To promote effective primary and secondary prevention of CKD, regularly updated guidelines that are based on the best available evidence and augmented with healthcare context-specific strategies for implementation are warranted. Summary at a Glance The authors summarized various CKD guidelines and revealed that they are not structurized. It was concluded that CKD guidelines shoud be continuously varidated and updated. © 2013 The Authors. Nephrology

Constructive Peer Relationships, Social Development, and Cooperative Learning Experiences: Implications for the Prevention of Drug Abuse

Abstract: One approach to the prevention of drug abuse is to provide socializing experiences aimed at helping children and adolescents acquire the basic social competencies needed to cope with life situation...

Initial sequencing and analysis of the human genome.

Abstract: The human genome holds an extraordinary trove of information about human development, physiology, medicine and evolution. Here we report the results of an international collaboration to produce and make freely available a draft sequence of the human genome. We also present an initial analysis of the data, describing some of the insights that can be gleaned from the sequence.

疟原虫var基因转换速率变化导致抗原变异[英]／Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A

Abstract: 抗原变异可使得多种致病微生物易于逃避宿主免疫应答。表达在感染红细胞表面的恶性疟原虫红细胞表面蛋白1（PfPMP1）与感染红细胞、内皮细胞、树突状细胞以及胎盘的单个或多个受体作用，在黏附及免疫逃避中起关键的作用。每个单倍体基因组var基因家族编码约60种成员，通过启动转录不同的var基因变异体为抗原变异提供了分子基础。

The social identity theory of intergroup behavior

Abstract: This chapter presents an outline of a theory of intergroup conflict and some preliminary data relating to the theory. Much of the work on the social psychology of intergroup relations has focused on patterns of individual prejudices and discrimination and on the motivational sequences of interpersonal interaction. The intensity of explicit intergroup conflicts of interests is closely related in human cultures to the degree of opprobrium attached to the notion of "renegade" or "traitor." The basic and highly reliable finding is that the trivial, ad hoc intergroup categorization leads to in-group favoritism and discrimination against the out-group. Many orthodox definitions of "social groups" are unduly restrictive when applied to the context of intergroup relations. The equation of social competition and intergroup conflict rests on the assumptions concerning an "ideal type" of social stratification in which the salient dimensions of intergroup differentiation are those involving scarce resources.