Abstract:
:Little is known about how mitogenic factors generate growth regulatory signals and how these are mediated within the cell. We have developed three different types of mitogenic stimuli in order to identify the possible existence of common denominators in a complex and perhaps pleiotypic signal-response system. 3T3 cells, starved to quiescence by reducing the serum content of the culture medium 100-fold, can be irreversibly committed to undergo DNA replication and mitosis in a serum-free medium after an initial exposure of short duration to (a) serum factors and cholesterol, (b) a relative excess of glutamine, or (c) alkaline pH. Cells stimulated by any of these procedures, and subsequently incubated in serum-free Dulbecco's modified Eagle's medium (DMEM) undergo DNA replication and mitosis in the absence of concomitant cellular enlargement (imbalanced growth). However, cellular enlargement is induced after the initial mitogenic stimuli (a, b, and c, as described previously) if the cells are subsequently incubated in DMEM containing greater than or equal to 0.5% serum, supraphysiological concentrations of insulin, or normal concentrations of somatomedin C.
journal_name
Ann N Y Acad Scijournal_title
Annals of the New York Academy of Sciencesauthors
Zetterberg A,Engström W,Larsson Odoi
10.1111/j.1749-6632.1982.tb43423.xsubject
Has Abstractpub_date
1982-12-10 00:00:00pages
130-47eissn
0077-8923issn
1749-6632journal_volume
397pub_type
杂志文章abstract::This review discusses the available clinical trials in which steroids have been used in the (adjuvant) treatment of rheumatoid arthritis. Glucocorticosteroids have a positive effect on symptoms and signs of inflammation, but probably not on structural damage. Therefore glucocorticosteroids should be used as part of a ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1999.tb07659.x
更新日期:1999-06-22 00:00:00
abstract::The objective of this study was to visualize androgen receptors (ARs) in the testis, epididymis, and prostate of the stallion by means of immunohistochemistry. Nuclear immunostaining was found in all somatic cells in the testis--Leydig, Sertoli, and peritubular myoid cells; in both types of epithelial cells of the epi...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1327.030
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abstract::Our recently developed method, TranSIESTA, enables modelling of molecular electronic devices under operation conditions. The method is based on density functional theory, and calculates the self-consistent electronic structure of a nanostructure coupled to three-dimensional electrodes with different electrochemical po...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1292.014
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abstract::Cross-species hybridizations have enabled us to isolate and clone the gene for the beta chain of human fibrinogen. Highlights of the gene for the beta chain revealed by nucleotide sequence analyses, particularly in areas that have a direct bearing on defining the overall organization of the gene, have been presented. ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1983.tb23265.x
更新日期:1983-06-27 00:00:00
abstract::All scientists are acutely aware of the profound challenge that they face when communicating scientific findings to nonscientists, especially when great uncertainty is involved and when the topic is of personal interest to the general public. Simplification of the issues--sometimes extending to a degree of oversimplif...
journal_title:Annals of the New York Academy of Sciences
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abstract::After a complete spinal cord injury (SCI) at the lowest thoracic level (T13), adult cats trained to walk on a treadmill can recover hindlimb locomotion within 2-3 weeks, resulting from the activity of a spinal circuitry termed the central pattern generator (CPG). The role of this spinal circuitry in the recovery of lo...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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更新日期:2013-03-01 00:00:00
abstract::Liver cirrhosis is a condition in which overnutrition, edema, and undernutrition can coexist simultaneously, or successively, over a period of time, giving rise to alterations in body composition, as well as systemic and multiorgan manifestations. We undertook a cross-sectional study of body composition in 198 adult p...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2000.tb06421.x
更新日期:2000-05-01 00:00:00
abstract::To evaluate the effect of Lactobacillus casei on the effectiveness of the Mexican bovine babesiosis mixed vaccine, 20 bovines were randomly allocated into four groups of five animals (I, II, III, and IV). At day -2 animals in groups I and II were inoculated with saline solution by intramuscular route (i.m.) and animal...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
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更新日期:2008-12-01 00:00:00
abstract::By virtue of the progress in proteomics, the involvement of posttranslational modifications in aging has been more clearly demonstrated in recent years. We describe here that (1) carbonylation, a hallmark of protein oxidation in general, is paradoxically decreased in histone with aging and increased by calorie restric...
journal_title:Annals of the New York Academy of Sciences
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更新日期:2010-06-01 00:00:00
abstract::Evidence is reviewed that suggests a central role for telomeres in one major model of biological aging, namely, proliferative senescence. Telomeric shortening with each cell division does not only act as a biological clock, but appears to trigger the ultimate loss of proliferative ability via activation of the p53-dep...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1998.tb09912.x
更新日期:1998-11-20 00:00:00
abstract::Post-polio syndrome (PPS) describes the clinical onset of progressive muscular weakness many years after survival of acute paralytic poliomyelitis, often in muscle groups clinically unaffected by the original disease process. Prior pathologic descriptions of this often disabling, but not usually fatal, syndrome have b...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1995.tb27544.x
更新日期:1995-05-25 00:00:00
abstract::Lesion, stimulation, and pharmacological studies point to separate hypothalamic control of pulsatile FSH and LH secretion. LH release is controlled by a region extending from the preoptic area to the anterior and mid-median eminence, whereas FSH release is controlled by a region extending from the dorsal anterior hypo...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1993.tb43853.x
更新日期:1993-05-28 00:00:00
abstract::Insulin-like growth factor-I (IGF-I) and IGF-I receptor (IGF-IR), despite their well-known roles in cell survival and proliferation, can also weakly enhance apoptosis. To study the relationships between the IGF-IR and Bax as well as Bak, 144 cases of colorectal cancer were examined by immunohistochemistry, using the a...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
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更新日期:2004-12-01 00:00:00
abstract::Abnormal function of the lymphatic vessels is associated with a variety of diseases, such as tumor metastasis and lymphedema. The development of strategies for local and controlled induction or inhibition of lymphangiogenesis would thus be of major importance for the treatment of such diseases. Two growth factors, vas...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2002.tb04871.x
更新日期:2002-12-01 00:00:00
abstract::We present our achievements in the synthesis and application of multifunctionalized, cross-linked, polystyrene microspheres, which remarkably and quite generally are taken up by all cell types studied to date. Importantly, the nature of these synthetic beads allows multistep solid-phase chemistry and the ability to bi...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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更新日期:2008-01-01 00:00:00
abstract::Two basic types of factors reacting with anti-I region (anti-Ia) antisera are compared, those derived from macrophage-like antigen presenting cells and others derived from T-lymphocytes, of either the suppressor or helper type. Despite the common property of reacting with anti-Ia antisera, the two sets of factors diff...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1979.tb47153.x
更新日期:1979-01-01 00:00:00
abstract::Early dissemination, blood circulation, or homing of single tumor cells in bone marrow and other organs is usually undetectable at primary diagnosis, even by high resolution imaging technologies. However, ultrasensitive approaches now enable the detection of "occult" tumor cells. Many researchers are currently focusin...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2010.05779.x
更新日期:2010-10-01 00:00:00
abstract::Neuroimaging research suggests that cerebral white matter (WM) integrity, as reflected in fractional anisotropy (FA) via diffusion tensor imaging (DTI), is decreased in older adults, especially in the prefrontal regions of the brain. Behavioral investigations of cognitive functioning suggest that some aspects of cogni...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
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abstract::Jopock (Jpk), a transacting factor associated with the position-specific regulatory element of murine Hoxa-7, has shown to induce cell death in both prokaryotic and eukaryotic cells when introduced and overexpressed. Since Jpk protein harbors a transmembrane domain (TM) and a putative endoplasmic reticulum (ER) -reten...
journal_title:Annals of the New York Academy of Sciences
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abstract::This volume provides a small sampling of the rapidly growing science of cancer immunology. Growth in the field includes advances on the requirements for immunization or vaccination and the ways in which immunity can be suppressed or blocked, including active tumor-based mechanisms. I would like to introduce the papers...
journal_title:Annals of the New York Academy of Sciences
pub_type:
doi:10.1111/j.1749-6632.2009.05060.x
更新日期:2009-09-01 00:00:00
abstract::Masting, the highly variable and synchronous production of seeds across a population of perennial plants, is an ecologically important, but still poorly understood, phenomenon. While much is known about the fitness benefits of masting and its effects on seed consumers and trophic interactions, less is understood about...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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更新日期:2014-08-01 00:00:00
abstract::Tight junction (TJ) properties are determined by membrane protein complexes of neighboring cells that form both a barrier and a selective pathway for paracellular substrate transport. Our previous work supports the view that paracellular permeability changes in the thick ascending limb (TAL) may underlie the mechanism...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2009.04041.x
更新日期:2009-05-01 00:00:00
abstract::Vitamin E has the ability to scavenge a wide spectrum of free radicals, including singlet oxygen, superoxide, and hydroxyl radicals. It has beneficial effects against several other disorders, such as atherosclerosis and ischemic heart disease, because it acts as a transcriptional regulator for gene expression via a tr...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
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更新日期:2006-11-01 00:00:00
abstract::DNA methylation and histone modification promote changes in chromatin structure that may affect gene expression in a heritable manner without directly altering the genome. As such, these phenomena are considered to be epigenetic in nature and are believed to contribute to the normal processes of human development but ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2003.tb05970.x
更新日期:2003-03-01 00:00:00
abstract::Exposure of quail eggs 4 hr per day during the first 5 incubation days at 2450 MHz and in an exposure field of 30 mW/cm-2 and at an absorbed power of 14 mW/g does not cause any great change in body weight, observed gross malformations, rbc, wbc, hematocrit, hemoglobin, or differential wbc percentages. If small differe...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1975.tb36012.x
更新日期:1975-02-28 00:00:00
abstract::Chemical hypoxia produces depletion of ATP, intracellular Ca2+ overload, and cell death. The role of Na+/Ca2+ exchanger (NCX), the major plasma membrane Ca2+ extruding system, has been explored in chemical hypoxia using BHK cells stably transfected with the three mammalian NCX isoforms: NCX1, NCX2, and NCX3. Here we r...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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更新日期:2007-03-01 00:00:00
abstract::Cardiomyocytes in the adult mammal retain little or none of their developmental capacity for hyperplastic growth. As a consequence of this differentiated, nonproliferative phenotype, cardiomyocyte loss due to injury or disease is irreversible. Therapeutic intervention in end-stage diseased hearts is currently limited ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1995.tb17454.x
更新日期:1995-03-27 00:00:00
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::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::Here we briefly review our studies that have unraveled an important role for the calcium- and calmodulin-sensitive enzyme calcineurin (CN) in bone remodeling. We find that the genetic deletion of the calcineurin Aalpha isoform results in osteoporosis, which is recapitulated in humans following calcineurin inhibitor th...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
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更新日期:2007-11-01 00:00:00