Abstract:
:The frequencies of 6-thioguanine-resistant primary clones from the kidneys and skeletal muscles of aging male cohorts of two F1 hybrid strains of Mus musculus varied from 0.59 to 10.96 X 10(-5) and did not increase as a function of donor age (up to 40 months). Resistant clones were shown to be severely deficient in the activity of hypoxanthine-guanine phosphoribosyltransferase (EC 2.4.2.8). These deficiencies presumably resulted from molecular alterations at this X-linked locus, including point mutations. No alterations of the X-chromosome were observed at the level of the light microscope. These results are inconsistent with predictions of the intrinsic mutagenesis and protein synthesis error catastrophe theories of aging. They do not rule out, however, somatic mutational theories that invoke comparatively large-scale chromosomal lesions, many of which would be likely to be lethal at the cellular level.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Horn PL,Turker MS,Ogburn CE,Disteche CM,Martin GMdoi
10.1002/jcp.1041210207subject
Has Abstractpub_date
1984-11-01 00:00:00pages
309-15issue
2eissn
0021-9541issn
1097-4652journal_volume
121pub_type
杂志文章abstract::There is strong evidence that thyroid hormones through triiodothyronine (T3) regulate Sertoli cell proliferation and differentiation in the neonatal testis. However, the mechanism(s) by which they are able to control Sertoli cell proliferation is unclear. In the present study in vivo approaches (PTU-induced neonatal h...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20716
更新日期:2006-10-01 00:00:00
abstract::The level of poly A+ RNA in growing cultures of human diploid fibroblasts is 1.8-fold times greater than in resting cultures. The level of functional ribosomes in growing cultures is 2.8 times that in resting cultures. Since transit times are similar in both types of cells, it can be concluded that the rate of protein...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1040940212
更新日期:1978-02-01 00:00:00
abstract::Hyaluronan (HA) accumulates in vascular disease but its functional role is not fully understood. To investigate the impact of HA enriched extracellular matrices (ECM) on cell phenotype, arterial smooth muscle cells (ASMCs) were transduced with retroviral constructs (LXSN) encoding murine has-1, has-2, and has-3. HA sy...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20468
更新日期:2006-02-01 00:00:00
abstract::Obese women offspring have a higher risk of developing chronic diseases associated with an altered immune function. We aim to determine, in neonatal monocyte-derived macrophages, whether maternal obesity is associated with an altered expression and DNA methylation of pro- and anti-inflammatory genes, along with a high...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.25845
更新日期:2017-12-01 00:00:00
abstract::We investigated the regulation of Cl- secretion by adrenoceptors in polarized 16HBE14o- human bronchial epithelial cells. Treatment with the nonselective β adrenoceptor agonist isoprenaline stimulated an increase in short-circuit current (ISC ), which was inhibited by the β adrenoceptor blocker propranolol. Treatment ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.29683
更新日期:2020-11-01 00:00:00
abstract::As a strategy to identify gene expression changes affected by human polynucleotide phosphorylase (hPNPase(old-35)), we performed gene expression analysis of HeLa cells in which hPNPase(old-35) was overexpressed. The observed changes were then compared to those of HO-1 melanoma cells in which hPNPase(old-35) was stably...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.24645
更新日期:2014-12-01 00:00:00
abstract::In vitro bioluminescence components of the dinoflagellates Gonyaulax polyedra, G. tamarensis, Dissodinium lunual, and Pyrocystis noctiluca were studied. The luciferases and luciferins of the four species cross-react in all combinations. All of these species possess high-molecular weight luciferases (200,000-400,000 da...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1040870115
更新日期:1976-01-01 00:00:00
abstract::The essential trace element zinc (Zn) is widely required in cellular functions, and abnormal Zn homeostasis causes a variety of health problems including immunodeficiency and sensory dysfunctions. Previous studies had shown that Zn availability was also important for tumor growth and progression. The aim of the presen...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.28670
更新日期:2019-11-01 00:00:00
abstract::MicroRNAs (miRNAs or miRs) are small noncoding RNAs that play critical roles in muscle cell proliferation and differentiation via post-transcriptional regulation of gene expression. Here, based on our previous high-throughput sequencing results, we evaluated miRNA-499 (miR-499) functions during myoblast proliferation ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.26903
更新日期:2019-03-01 00:00:00
abstract::Infection with Verotoxin producing Escherichia coli (VTEC) has been implicated in hemolytic uremic syndrome, the leading cause of pediatric renal failure. Verotoxin (VT) binds to globotriaosylceramide (Gal alpha 1-4Gal beta 1-4GlcCer Gb3) in susceptible cells. Gb3 is required for cytotoxicity and toxin-resistant cells...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041500324
更新日期:1992-03-01 00:00:00
abstract::The eukaryotic translation initiation factor 5A (eIF5A) contains a special amino acid residue named hypusine that is required for its activity, being produced by a post-translational modification using spermidine as substrate. Stem cells from rat skeletal muscles (satellite cells) were submitted to differentiation and...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21619
更新日期:2009-03-01 00:00:00
abstract::Human peripheral blood monocytes and neutrophils secrete TGF-beta. Activation of monocytes with LPS stimulates the secretion of TGF-beta; however, the production of TGF-beta by neutrophils was not altered by treatment with LPS. The secreted TGF-beta appears to be in a fully active form since acid treatment of the cond...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041400226
更新日期:1989-08-01 00:00:00
abstract::Toll-like receptors (TLRs) are usually expressed on immune cells such as macrophages, dendritic cells, mast cells, as well as on eosinophils and some epithelial cells. They play a central role in the recognition of harmful molecules that belong to invading microorganisms or internal damaged tissues, which lead to infl...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.28879
更新日期:2019-12-01 00:00:00
abstract::rac-1-O-Myristoyl-2-O-acetylglycerol, rac-1-O-palmitoyl-2-O-acetylglycerol, and rac-1-O-oleoyl-2-O-acetylglycerol acted like phorbol myristate acetate and mezerein in stimulating human neutrophil aggregation. Responses to these agents were equally influenced by cytochalasin B, extracellular calcium and magnesium, arac...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041250204
更新日期:1985-11-01 00:00:00
abstract::Prostaglandins prevent gastrointestinal mucosal injury and promote healing following mucosal injury by various noxious agents. Preservation or repair of microvascular function appears to be crucial in these processes. The processes involved in prostaglandin-mediated repair and preservation of endothelial function are ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199605)167:2<204::AID-JCP3
更新日期:1996-05-01 00:00:00
abstract::Testicular germ cell tumors (TGCTs) are frequent solid malignant tumors and cause of death in men between 20-40 years of age. Genetic and environmental factors play an important role in the origin and development of TGCTs. Although the majority of TGCTs are responsive to chemotherapy, about 20% of patient presents inc...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.25482
更新日期:2017-02-01 00:00:00
abstract::Shear stress changes are associated with a repertory of signaling cascade modulating vascular phenotype. As shear stress-related tensional forces might be associated with pathophysiological susceptibility, a more comprehensive molecular map needs to be addressed. Thus, we subjected human umbilical vein endothelial cel...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.27787
更新日期:2019-07-01 00:00:00
abstract::Using rapid kinetic techniques, we have determined the kinetics of zero-trans influx and equilibrium exchange of adenosine, and its uptake and in situ phosphorylation at 25 degrees C in human erythrocytes which were pretreated with 2'-deoxycoformycin to inhibit deamination of adenosine. Both the Km and Vmax for adenos...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041250223
更新日期:1985-11-01 00:00:00
abstract::A sensitive serum-free culture system was used to demonstrate that cells derived from normal human skin release soluble mediators which can modulate keratinocyte, melanocyte, and fibroblast growth in vitro. In M199 supplemented with epidermal growth factor, hydrocortisone, insulin, transferrin, triidothyronine, bovine...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041170215
更新日期:1983-11-01 00:00:00
abstract::Atherothrombotic cardiovascular disease is a major cause of mortality throughout the world. Platelet activation and aggregation play a central role in hemostasis and thrombosis. Herbal medicines have been traditionally used in the management of cardiovascular disease and can help in modifying its progression, particul...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.26249
更新日期:2018-06-01 00:00:00
abstract::Cyclosporine A (CyA) is a powerful nonsteroidal immunosuppressive agent used to prevent graft rejection of organ and bone marrow transplants. A major side effect observed can be attributed to the fibroblast and its functions: proliferation of fibroblasts and formation of fibrotic tissue in the gingiva (fibrous hyperpl...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041520222
更新日期:1992-08-01 00:00:00
abstract::Plasminogen activator inhibitor-1 (PAI-1) is known as an inhibitor of fibrinolytic system. Previous studies suggest that PAI-1 is involved in the pathogenesis of osteoporosis induced by ovariectomy, diabetes, and glucocorticoid excess in mice. However, the roles of PAI-1 in early-stage osteogenic differentiation have ...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.27655
更新日期:2019-06-01 00:00:00
abstract::The application of the phenomenon of premature chromosome condensation for cell cycle analysis in HeLa and CHO cells has been examined. Random populations of HeLa and CHO cells pulse labelled with H3-TdR were separately fused with mitotic HeLa cells using U.V. inactivated Sendai virus. The resulting prematurely conden...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1040910113
更新日期:1977-04-01 00:00:00
abstract::We have described recently that expression of CD44 exon v10 (CD44v10) is down-regulated upon metastasis of squamous cell carcinoma, whereas it is up-regulated in skin metastases of malignant melanoma. The striking regulation of CD44v10 prompted us to generate a murine CD44v10-specific monoclonal antibody to define exp...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4652(199706)171:3<305::AID-JCP9
更新日期:1997-06-01 00:00:00
abstract::We have analyzed the expression of Na,K-ATPase alpha subunit isoforms in the transporting ciliary processes of the human eye and in cultured cells derived from non-pigmented (NPE) and pigmented (PE) ciliary epithelium. Northern hybridization analysis shows that the mRNAs encoding all the three distinct forms of Na,K-A...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.1041410203
更新日期:1989-11-01 00:00:00
abstract::Protein sorting through vesicular compartments is highly regulated to maintain the integrity and signaling of intracellular organelles in eukaryotic cells. Sorting Nexin-2 (SNX2) is involved in protein sorting in the trans-Golgi network, endosome, and/or lysosome compartments, with loss of function leading to defect i...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.20285
更新日期:2005-07-01 00:00:00
abstract::A process of unconventional secretion that is dependent on the Golgi stacking protein GRASP and multiple components of the autophagy machinery has recently been documented for several cytoplasmic and membrane protein. Classical secretion via the exocytic pathway is inhibited during cell division in animal cells, as ke...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.24264
更新日期:2013-05-01 00:00:00
abstract::Serine racemase (SR) is responsible for the biosynthesis of D-serine (D-Ser), an endogenous co-agonist for the glycine (Gly)-binding site on N-methyl-D-aspartate (NMDA) receptors, from L-Ser in the brain. We have previously demonstrated high expression of SR by chondrocytes in cartilage. In this study, we attempted to...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21821
更新日期:2009-09-01 00:00:00
abstract::Human polyomaviruses, which include JC virus (JCV) and BK virus (BKV), as well as the simian virus 40 (SV40), have been associated with human tumors and have been shown to be highly tumorigenic in experimental animal models. Although the mechanism by which JCV induces tumorigenesis is not entirely clear, earlier studi...
journal_title:Journal of cellular physiology
pub_type: 杂志文章
doi:10.1002/jcp.21005
更新日期:2007-07-01 00:00:00
abstract::Wound healing is a complex but a fine-tuned biological process in which human skin has the ability to regenerate itself following damage. However, in particular conditions such as deep burn or diabetes the process of wound healing is compromised. Despite investigations on the potency of a wide variety of stem cells fo...
journal_title:Journal of cellular physiology
pub_type: 杂志文章,评审
doi:10.1002/jcp.27922
更新日期:2019-06-01 00:00:00