每日一文(April 2001)

Apr 30, 2001 Heart Failure in the 21st Century: A Cardiogeriatric Syndrome
Chronic heart failure (CHF) is principally a cardiogeriatric syndrome, and it has become a major public health problem in the 21st century due largely to the aging population.
Apr 29, 2001 A listing of human tumor antigens recognized by T cells
Since the cloning of MAGE-1, the first gene reported to encode a human tumor antigen recognized by T cells, molecular identification and characterization of tumor antigens has mainly been achieved for melanoma.
Apr 28, 2001 Control of a Genetic Regulatory Network by a Selector Gene
The formation of many complex structures is controlledby a special class of transcription factors encoded by selector genes.
Apr 27, 2001 Sequencing Genomes and Beyond
The completion of the working draft sequence of the human genome, an achievement as significant as landing man on the moon, was announced 26 June 2000 and published 16 February 2001. This feat was made possible by technological advances in DNA sequencing, the process of determining the order of the individual chemical bases (A, T, G, and C) in a DNA molecule.
Apr 26, 2001 Foreign DNA Integration
In hamster cells transgenic for the DNA of adenovirus type 12 (Ad12) or for the DNA of bacteriophage l, the patterns of DNA methylation in specific cellular genes or DNA segments remote from the site of transgene insertion were altered. In the present report, a wide scope of cellular DNA segments and genes was analyzed.
Apr 25, 2001 Diabetes, Hypertension, and Cardiovascular Disease
Cardiovascular diseases (CVDs) are the major causes of mortality in persons with diabetes, and many factors, including hypertension, contribute to this high prevalence of CVD.
Apr 24, 2001 The disabled dendritic cell

Dendritic cells are important antigen-presenting cells of the immune system that induce and modulate immune responses.

Apr 23, 2001 The promise of monoclonal antibodies for the therapy of cancer
The series of manuscripts presented in this issue provide an insight into the evolving field of monoclonal antibody therapy for cancer.
Apr 22, 2001 Therapeutic coronary angiogenesis: a fronte praecipitium a tergo lupi?
AFTER INITIAL EUPHORIA from early reports of successful therapeutic angiogenesis induced by either application of growth factors or laser revascularization in patients with peripheral and coronary disease, recent reports from large well-controlled studies involving vascular endothelial growth factor (VIVA) (15), basic fibroblast growth factor (FIRST) (18), and transmyocardial laser (DIRECT) have cast a pall on the field.
Apr 21, 2001

Cardiac excitation-contraction coupling: role of membrane potential in regulation of contraction

CONTRACTION IN THE HEART is initiated by a transient rise in intracellular free Ca21. The cardiac action potential triggers this Ca21 transient, which rapidly rises and decays with each cardiac cycle.

Apr 20, 2001 Neural network model of gene expression

Many natural processes consist of networks of interacting elements that, over time, affect each other’s state. Their dynamics depend on the pattern of connections and the updating rules for each element.

Apr 19, 2001

ENVIRONMENTAL INFLUENCES ON EATING AND PHYSICAL ACTIVITY

The current epidemic of obesity is caused largely by an environment that promotes excessive food intake and discourages physical activity.
Apr 18, 2001 Direct Transcriptional Activation of Human Caspase-1 by Tumor Suppressor p53

The tumor suppressor protein p53 is a sequence-specific DNA-binding protein, and its biological responses are very often mediated by transcriptional activation of various target genes.

Apr 17, 2001 Medicare and Prescription Drugs-HEALTH POLICY 2001
Prescription-drug coverage is now provided for the vast majority of persons enrolled in private health insurance, Medicaid, or plans for government employees, veterans, and active military personnel.
Apr 16, 2001 Towards an understanding of somatic hypermutation
The GC-specific activation-induced cytidine deaminase has been identified as a key factor controlling two central GC-specific events: somatic hypermutation and classswitch recombination of immunoglobulin genes.
Apr 15, 2001 MINISYMPOSIUM ON OBESITY: Overview and Some Strategic Considerations

The high and still increasing prevalence of obesity in US children, adolescents, and adults poses a major economic and health threat to our society.

Apr 14, 2001 New functions for glia in the brain

The glial cells play a key role in these essential brain functions of information processing, plasticity, learning, and memory.

Apr 13, 2001 PREVENTING OBESITY IN CHILDREN AND ADOLESCENTS

In this review, we address the natural history of obesity in children, the most promising family- and school-based approaches to the prevention of obesity, and the barriers and opportunities associated with secondary prevention.

Apr 12, 2001 Generation and maintenance of memory T cells
Recent evidence suggests that T memory cells arise from a subset of effector cells. The longevity of T memory cells may require continuous contact with cytokines, notably IL-15 for CD8+ cells.
Apr 11, 2001 Computer applications in biomolecular sciences:bioinformatics and genome projects
This article de"nes and describes some of the basics of bioinformatics and projects aimed at sequencing entire genomes.
Apr 10, 2001 Computing an organism
Scientists have been intensively studying D. discoideum for decades, as a model system in developmental biology.
Apr 9, 2001 THE PUBLIC HEALTH IMPACT OF OBESITY

The increase in obesity worldwide will have an important impact on the global incidence of cardiovascular disease, type 2 diabetes mellitus, cancer, osteoarthritis, work disability, and sleep apnea.

Apr 8, 2001 Molecular targets for pharmacological cytoprotection
In the past two decades, research into the mechanism of cell death has characterized the cardinal features of apoptosis and necrosis, the two distinct forms of cell death.
Apr 7, 2001 Regulation of mRNA stability in mammalian cells
The regulation of mRNA decay is a major control point in gene expression. The stability of a particular mRNA is controlled by specifc interactions between its structural elements and RNA-binding proteins that can be general or mRNA-specifc.
Apr 6, 2001 The Ribosome in Focus
The recent solution of ribosome structure at atomic resolution by X-ray crystallography represents a quantum leap in our understanding of the mechanism of protein synthesis.
Apr 5, 2001 Bone marrow cells regenerate infarcted myocardium
Injection of male Lin-c-kitPOS bone marrow cells (see Supplementary Information) in the peri-infarcted left ventricle of female mice resulted in myocardial regeneration.
Apr 4, 2001 Glycosylation, Immunity, and Autoimmunity
Carbohydrate binding proteins activate lymphocytes by cross-linking many lymphocyte cell surface glycoproteins, including some that contribute to the immunological synapse.
Apr 3, 2001 Cell Death Inhibition: Keeping Caspases in Check
If a cell undergoing apoptosis is analogous to an imploding building,then the explosives are caspases, proteases which bring about apoptosis by cleaving key cellular substrates.
Apr 2, 2001 Ca2+/aM-DEPENDENT KINASES: FromActivation to Function
Calmodulin (CaM) is an essential protein that serves as a ubiquitous intracellular receptor for Ca2+. The Ca2+/CaM complex initiates a plethora of signaling cascades that culminate in alteration of cellular functions.
Apr 1, 2001 CELLULAR RESPONSES TO DNA DAMAGE
Cells are constantly under threat from the cytotoxic and mutagenic effects of DNA damaging agents.

更新于2001-04-30