Abstract:
:One of the most striking changes in the primary lymphoid organs during human aging is the progressive involution of the thymus. As a consequence, the rate of naïve T cell output dramatically declines with age and the peripheral T cell pool shrinks. These changes lead to increased incidence of severe infections and decreased protective effect of vaccinations in the elderly. Little is, however, known of the composition and function of the residual naïve T cell repertoire in elderly persons. To evaluate the impact of aging on the naïve T cell pool, we investigated the quantity, phenotype, function, composition, and senescence status of CD45RA(+)CD28(+) human T cells--a phenotype generally considered as naïve cells--from both young and old healthy donors. We found a significant decrease in the number of CD45RA(+)CD28(+) T cells in the elderly, whereas the proliferative response of these cells is still unimpaired. In addition to their reduced number, CD45RA(+)CD28(+) T cells from old donors display significantly shorter telomeres and have a restricted TCR repertoire in nearly all 24 Vbeta families. These findings let us conclude that naïve T cells cannot be classified with conventional markers in old age.
journal_name
Ann N Y Acad Scijournal_title
Annals of the New York Academy of Sciencesauthors
Pfister G,Weiskopf D,Lazuardi L,Kovaiou RD,Cioca DP,Keller M,Lorbeg B,Parson W,Grubeck-Loebenstein Bdoi
10.1196/annals.1354.018subject
Has Abstractpub_date
2006-05-01 00:00:00pages
152-7eissn
0077-8923issn
1749-6632pii
1067/1/152journal_volume
1067pub_type
杂志文章abstract::Older age is associated with functional declines throughout the body, including some aspects of cognitive performance. While dementia develops in only some elderly individuals, declines in cognitive functioning have an impact on daily living for many others. There are individual differences in age-related cognitive ch...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1323.014
更新日期:2005-12-01 00:00:00
abstract::This study investigates the effects of agmatine on naloxone-precipitated withdrawal syndrome in morphine-dependent guinea pig ileum. Male guinea pigs that were starved for 24 hours were decapitated after cervical dislocation, and terminal portions of the ilea were removed. Segments were fixed at a resting tension of 1...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1304.016
更新日期:2003-12-01 00:00:00
abstract::During viewing of a near target, the gain of the visually modulated vestibulo-ocular reflex (vVOR) exceeds 1.0. We investigated whether retinal image slip contributes to this gain increase by measuring responses during strobe illumination. Subjects showed greater gain values during normal versus strobe illumination of...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1325.045
更新日期:2005-04-01 00:00:00
abstract::Statistical learning is a set of cognitive mechanisms allowing for extracting regularities from the environment and segmenting continuous sensory input into discrete units. The current study used functional magnetic resonance imaging (fMRI) (N = 25) in conjunction with an artificial language learning paradigm to provi...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/nyas.14299
更新日期:2020-05-01 00:00:00
abstract::Allergic contact dermatitis is a common inflammatory skin disease caused by T cells that recognize environmental and industrial allergens (i.e., haptens). Langerhans' cells (LC), which are skin-specific and "immature" members of the dendritic cell (DC) family of antigen-presenting cells, play crucial roles in the indu...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2000.tb06880.x
更新日期:2000-01-01 00:00:00
abstract::We compare diverging evolution of a two-component (gas+stars) galactic disk embedded in a "live" halo with that of an identical pure stellar disk. Our modeling supports the conjecture that the growth of central concentration in galaxies dissolves the main family of regular orbits in the stellar bar and assists in the ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1998.tb11258.x
更新日期:1998-12-30 00:00:00
abstract::Based on implications from the pediatric studies of cardiovascular risk, it has become imperative that practical methods be developed to begin prevention of heart disease early in life. Schools provide an excellent setting for introducing comprehensive health education and promotion as a public health approach to the ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1997.tb48208.x
更新日期:1997-05-28 00:00:00
abstract::Acanthamoeba castellanii (A. castellanii) is a common soil- or water-borne protozoon that feeds on bacteria by phagocytosis. A. castellanii can grow between 4 and 32 degrees C and has to adapt quickly to chilling in order to survive. We have identified a Delta12-fatty acid desaturase as key to low temperature adaptati...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1391.025
更新日期:2007-10-01 00:00:00
abstract::Inflammasomes continue to generate interest in an increasing number of disciplines owing to their unique ability to integrate a myriad of signals from pathogen- and damage-associated molecular patterns into a proinflammatory response. This potent caspase-1-dependent process is capable of activating the innate immune s...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.12458
更新日期:2014-06-01 00:00:00
abstract::The extensive literature and the work from our laboratory illustrate the large number of complex processes affected by estrogen that might contribute to the striking ability of 17-beta estradiol (E2) and its derivatives to inhibit clinical and histological signs of experimental autoimmune encephalomyelitis (EAE) in mi...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1386.021
更新日期:2006-11-01 00:00:00
abstract::There is now clear evidence that the brain, similar to the adrenal gland, gonads, and placenta, is a steroidogenic organ. Notably in the frog brain, the presence of various steroidogenic enzymes has been detected by immunohistochemistry in specific populations of neurons and/or glial cells. These steroidogenic enzymes...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2008.03664.x
更新日期:2009-04-01 00:00:00
abstract::The survival of M. leprae and M. tuberculosis in the human host is dependent upon their ability to produce gene products that counteract the bactericidal activities of macrophages. To identify such mycobacterial genes and gene products, recombinant DNA libraries of mycobacterial DNA in E. coli were passed through macr...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1994.tb44236.x
更新日期:1994-08-15 00:00:00
abstract::Nanofluids consisting of nanometer-sized particles dispersed in base liquids are known to be effective in extending the saturated boiling regime and critical heat flux in pool boiling. The heat transfer characteristics of nanosilica suspensions with particle sizes of 10 and 20 nm in pool boiling with a suspended heati...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2008.04334.x
更新日期:2009-04-01 00:00:00
abstract::Colorectal cancer is the third most frequent fatal malignant neoplasm in the United States and is expected to cause significant morbidity and mortality. The recent recall of cyclooxygenase-2 inhibitors from clinical trials highlights the need to develop other agents for cancer chemoprevention trials. Intervention stra...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1339.016
更新日期:2005-11-01 00:00:00
abstract::This article analyzes the serum cytokine profile of a nonrandomized group of patients with rheumatoid arthritis (RA) and psoriatic arthritis (PsA) who are destined to be treated with infliximab following failure after failure of different disease-modifiying antirheumatic drugs (DMARDs). Serial serum samples were colle...
journal_title:Annals of the New York Academy of Sciences
pub_type: 临床试验,杂志文章
doi:10.1196/annals.1423.068
更新日期:2007-09-01 00:00:00
abstract::Adhesive interactions are recognized requirements for cellular proliferation, migration and differentiation during normal morphogenesis as well as disease. By differential cloning, osteopontin was identified as an adhesive protein upregulated during vascular remodeling and neointima formation in both rat models and hu...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1995.tb44624.x
更新日期:1995-04-21 00:00:00
abstract::The blood fibrinolytic system comprises an inactive proenzyme, plasminogen, that can be converted to the active enzyme, plasmin. Plasmin degrades fibrin into soluble fibrin degradation products, by two physiological plasminogen activators (PA), the tissue type PA (t-PA) and the urokinase type PA (u-PA). t-PA mediated ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2001.tb03511.x
更新日期:2001-01-01 00:00:00
abstract::Calcium signaling plays a key role in bone turnover, regulating both osteoblasts and osteoclasts. Despite this the role of calmodulin, the primary intracellular calcium receptor regulatory protein, has received little attention. In this brief review, the function of Ca(2+)/calmodulin signaling in osteoclast developmen...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2009.05242.x
更新日期:2010-03-01 00:00:00
abstract::Significant advances have been made over the past few years concerning the cellular and molecular events underlying neuron death. Recently, it is becoming increasingly clear that some of genes induced during cerebral ischemia may actually serve to rescue the cell from death. However, the injured cell may not be capabl...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2001.tb03643.x
更新日期:2001-06-01 00:00:00
abstract::Here we describe the AddNeuroMed multicenter magnetic resonance imaging (MRI) study for longitudinal assessment in Alzheimer's disease (AD). The study is similar to a faux clinical trial and has been established to assess longitudinal MRI changes in AD, mild cognitive impairment (MCI), and healthy control subjects usi...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,多中心研究
doi:10.1111/j.1749-6632.2009.05063.x
更新日期:2009-10-01 00:00:00
abstract::Processes that regulate quiescence, self-renewal, and differentiation of hematopoietic stem cells (HSCs) are not well understood. Owing, in part, to the ability of xenobiotic ligands to have persistent effects on the immune system in experimental animals, there has been much work to define a physiological role of the ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.12361
更新日期:2014-03-01 00:00:00
abstract::Information processing in the rodent hippocampus is fundamentally shaped by internally generated sequences (IGSs), expressed during two different network states: theta sequences, which repeat and reset at the ∼8 Hz theta rhythm associated with active behavior, and punctate sharp wave-ripple (SWR) sequences associated ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.13329
更新日期:2017-05-01 00:00:00
abstract::Many electronic design tools are, at their core, tools for analyzing interacting networks of components in which there is a definite causal sense of direction in each interaction: outputs affect inputs, but not vice versa. Simplifying or restricting a network of protein interactions so that this kind of directedness h...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2002.tb04534.x
更新日期:2002-10-01 00:00:00
abstract::The course of 1,487 patients with myasthenia gravis followed between 1940 and 1985 for a mean of 18 years provides further evidence that the distribution, severity, and outcome of the disease are determined during the first 1 to 3 (occasionally 5) years after onset, suggesting that injury to acetylcholine receptors oc...
journal_title:Annals of the New York Academy of Sciences
pub_type: 历史文章,杂志文章,评审
doi:10.1111/j.1749-6632.1987.tb51317.x
更新日期:1987-01-01 00:00:00
abstract::The airway disease termed asthma has been recognized for centuries but is now receiving increased attention because of chronicity, high incidence in the population and rising mortality rate. Asthma is now recognized as a disease of unknown etiology characterized by a hyperactive airway which can be demonstrated by res...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1991.tb37954.x
更新日期:1991-01-01 00:00:00
abstract::Approximately 40 to 50 infants and children with similar epidemiologic, clinical, and laboratory features of AIDS have been described. The occurrence of significant numbers of patients with PAIDS in geographic areas that are associated with similar risk factors and clinical features of AIDS suggests a common cause. Im...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1984.tb37154.x
更新日期:1984-01-01 00:00:00
abstract::The nature and regulation of juvenile hormone (JH) biosynthesis have been investigated in isolated corpora allata (CA) of adult males and females, and larvae of the tomato moth Lacanobia oleracea (Noctuidae). Larval CA (Vth day 1 to VIth day 1) appear to synthesize JH at very low rates (< 0.5 fmol/pr/h). This synthesi...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1999.tb07903.x
更新日期:1999-01-01 00:00:00
abstract::In summary, immediate hypersensitivity reactions to luminal antigens occur in the intestine and result in pathophysiology including increased permeability and ion secretion. The mechanism involves activation of mast cells with neural amplification (FIG. 5). Released mediators/neurotransmitters may act independently or...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1992.tb39771.x
更新日期:1992-01-01 00:00:00
abstract::Leukocyte trafficking from the blood stream to tissues is essential for continuous surveillance of foreign antigens. This dynamic process, designated as the leukocyte adhesion cascade, involves distinct steps. In leukocyte adhesion deficiency (LAD) I the firm adhesion of leukocyte to the endothelium is defective, due ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2011.06389.x
更新日期:2012-02-01 00:00:00
abstract::Pulmonary arterial hypertension (PAH) is a serious, chronic condition that, without early recognition and treatment, leads to progressive right heart failure and death. The dual endothelin receptor antagonist macitentan was designed through a deliberate discovery process to maximize endothelin-axis blockade while impr...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.12856
更新日期:2015-11-01 00:00:00