Abstract：
:Cell and DNA replicative potentials were studied in 10 strains of skin fibroblasts from unrelated patients with the Werner syndrome (WS) and in a progeric CRL 1277 strain. The lifespans of all WS strains and of CRL 1277 cells are greatly abbreviated in vitro, due to large fractions of non-cycling cells and the basic process of progressive clonal attenuation during Phase II. In some WS strains, the population-doubling rate per day and the cloning efficiency fluctuated concurrently in random fashion during the cellular aging process, indicating alternating successions of adaptively well and poorly growing clones, probably resulting from various chromosome translocations. No detectable defect in excision repair was found in WS or CRL 1277 cells. However, the rate of increase in the molecular weight of pulse-chased DNA involving overall rates of chain elongation and replicon fusion was retarded in WS and CRL 1277 cells. Also, pulse-labelled DNA in WS fibroblasts was less enriched in the nuclear matrix and was more slowly chased out than in normal cells. These results led us to postulate a misfiring or delayed initiation due to the sticky attachment of replicating DNA to the nuclear matrix in the replisomes of WS fibroblasts. A suggested model for abnormal DNA replication is presented and discussed to explain the loss of DNA and the chromosome abnormalities in WS cells. The abnormal DNA-synthetic profiles so derived appeared to be normalized in SV40-transformed PSV811 (WS) cells as were in gamma ray-transformed wild-type WI38CT-1 cells.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Fujiwara Y,Kano Y,Ichihashi M,Nakao Y,Matsumura Tdoi
10.1007/978-1-4684-7853-2_23subject
Has Abstractpub_date
1985-01-01 00:00:00pages
459-77eissn
0065-2598issn
2214-8019journal_volume
190pub_type
杂志文章abstract：:A series of native and chemically derivatized lactoferrins (Lfs) purified from milk and colostrum were assayed in vitro for their anti-HIV and anti-HCMV-cytopathic effects in MT4 cells and fibroblasts respectively. All Lfs from bovine and human milk or colostrum were able to completely block HCMV replication as well a...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：:Inorganic lead ion, in micromolar concentrations, reversibly inhibits the sodium-plus-potassium-activated adenosinetriphosphatase (ATPase) and potassium-activated p-nitrophenylphosphatase (NPPase) activities of microsomal fractions from electric organ, rat kidney, and rat brain. In the presence of 3 mM MgC12 and 3 mM ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-3279-4_21
更新日期：1977-01-01 00:00:00
abstract：:Serum levels of tryptophan (Trp) and 5-hydroxytryptophan (5-HTP) were measured in the mother at birth, by normal delivery or cesarean section, on days 1 and 3 post-partum, and in the cord blood of the fetus-newborns. Decreases in Trp and 5-HTP levels during delivery were noted. Conversely, Trp levels in the cord blood...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-0135-0_90
更新日期：2003-01-01 00:00:00
abstract：:The possible molecular conformations of four structurally and biologically different lipoxins derivatives were predicted by a systematic structure tree theoretical analysis. This method takes into account the London-Van der Waals energy of interaction, the electrostatic interaction, the rotation energy of the torsiona...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4757-0937-7_8
更新日期：1988-01-01 00:00:00
abstract：:Honokiol (C18H18O2) is a biphenolic natural product isolated from the bark and leaves of Magnolia plant spp. During the last decade or more, honokiol has been extensively studied for its beneficial effect against several diseases. Investigations have demonstrated that honokiol possesses anti-carcinogenic, anti-inflamm...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-41334-1_11
更新日期：2016-01-01 00:00:00
abstract：:Manipulation of complex objects and tools is a hallmark of many activities of daily living, but how the human neuromotor control system interacts with such objects is not well understood. Even the seemingly simple task of transporting a cup of coffee without spilling creates complex interaction forces that humans need...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-47313-0_4
更新日期：2016-01-01 00:00:00
abstract：:Therapeutic monoclonal antibodies (mAb) have changed the landscape of cancer therapy. With advances in the understanding of tumour biology and its microenvironment, different categories of mAbs have been developed; a first category is directed against tumour cells themselves, a second one comprises antibodies blocking...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-030-50224-9_9
更新日期：2020-01-01 00:00:00
abstract：:Asthma is a chronic inflammatory disease characterized by bronchospasms accompanied with frequent coughing, the pathogenesis of which is not clear. In healthy adults deep inspirations (DIs) provide a protective effect against bronchoconstriction triggered by methacholine inhalation, which correlates with the number of...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-94-007-4546-9_8
更新日期：2013-01-01 00:00:00
abstract：:Fibers are broadly classified as soluble and insoluble based on their physical or analytical properties. Two human studies have been carried out in this laboratory utilizing soluble gums. The first compared a low fiber diet to the diet with an average of 19.5 g of added fiber per day from cellulose, an insoluble fiber...
journal_title：Advances in experimental medicine and biology
pub_type： 临床试验,杂志文章
doi：10.1007/978-1-4684-5784-1_2
更新日期：1990-01-01 00:00:00
abstract：:All previous studies on the yeast metabolome have yielded a plethora of information on the components, function and organisation of low molecular mass and macromolecular components involved in the cellular metabolic network. Here we emphasise that an understanding of the global dynamics of the metabolome in vivo requi...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4419-7210-1_21
更新日期：2012-01-01 00:00:00
abstract：:Histone modification stands for a vital genetic information form, which shows tight correlation with the modulation of normal physiological activities by genes. Abnormal regulation of histone methylation due to histone modification enzyme changes and histone mutations plays an important role in the development of canc...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-15-8104-5_7
更新日期：2021-01-01 00:00:00
abstract：:Systematic studies on the oxygenation status of solid tumors have shown that the development of hypoxic/anoxic tissue subvolumes is a pathophysiological trait in a wide range of human malignancies. As a result of this characteristic property, adenosine (ADO) accumulation (range: 50-100 μM) occurs caused by intra- and ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4939-3023-4_22
更新日期：2016-01-01 00:00:00
abstract：:Time-resolved near-infrared spectroscopy (TRS-NIRS) allows absolute quantitation of deoxygenated haemoglobin and myoglobin concentration ([HHb]) in skeletal muscle. We recently showed that the spatial distribution of peak [HHb] within the quadriceps during moderate-intensity cycling is reduced with progressive hypoxia...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4939-3023-4_2
更新日期：2016-01-01 00:00:00
abstract：:The classic function of 1,25-dihydroxyvitamin D3, the hormonally active form of vitamin D, is the maintenance of normal levels of calcium and phosphorus in the blood. 1,25-Dihydroxyvitamin D3 binds to a specific receptor protein and exerts its biologic action by a mechanism analogous to that proposed for other steroid...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4613-1835-4_30
更新日期：1986-01-01 00:00:00
abstract：:Intramolecular ADP-ribose transfer reactions result in the formation of cyclic ADP-ribose (cADPR) and 2'-phospho-cyclic ADP-ribose (P-cADPR) from NAD and NADP, respectively. The potent Ca2+ releasing activity of these cyclic nucleotides has led to the postulation that they function as second messengers of Ca2+ signall...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：
更新日期：1997-01-01 00:00:00
abstract：:The two types of proteasomes with apparent sedimentation coefficients of 20S and 26S consist of a number of heterogeneous polypeptides and are unusually large protein complexes of approximately 750 kDa and 2000 kDa, respectively. The 26S proteasome is a cylindrical caterpillar-shaped complex with a symmetrical assembl...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4613-0335-0_23
更新日期：1996-01-01 00:00:00
abstract：:The purpose of this study was to investigate the effect of dietary taurine supplementation on bone mineral density (BMD) and bone mineral content (BMC) in rats. Twenty Sprague-Dawley male rats (body weight 200 ± 10 g) were divided into two groups, control and taurine group (2% taurine-supplemented diet). All rats wer...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4614-6093-0_6
更新日期：2013-01-01 00:00:00
abstract：:Thanks to recent improvements in NMR instrumentation, pulse sequence design, and sample preparation, a panoply of new NMR tools has become available for atomic resolution characterization of intrinsically disordered proteins (IDPs) that are optimized for the particular chemical and spectroscopic properties of these mo...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-20164-1_3
更新日期：2015-01-01 00:00:00
abstract：:The interaction between two neuropeptides, VIP and TRH, was studied. The TRH receptor binding ability was examined using intact GH3 cells and its membrane fraction. The TRH binding ability decreased when intact cells were preincubated with VIP, forskolin or db-cAMP, but not when the membrane fraction was treated with ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4757-5971-6_10
更新日期：1988-01-01 00:00:00
abstract：:Mitochondria are powerhouses and central to metabolism in cells. They are highly dynamic organelles that continuously fuse, divide, and move along the cytoskeleton to form the mitochondrial network. The fusion and fission are catalyzed by four dynamin-related GTPases in mammals that are controlled by a variety of prot...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-10-4567-7_3
更新日期：2017-01-01 00:00:00
abstract：:Lysophosphatidic acid (LPA) has major roles as a bioactive signaling molecule, with multiple physiological and pathological roles being described in almost every major organ system. In this review we discuss LPA signaling pathways as emerging drug targets for multiple conditions relevant to human health and disease. L...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-030-50621-6_7
更新日期：2020-01-01 00:00:00
abstract：:Blood flow of human mammary carcinomas heterotransplanted into immune- deficient rnu/rnu-rats is low. It decreases further with increasing tumor wet weight, the mean value being comparable to that of mammary carcinomas in patients. The O2 consumption rate of the heterotransplanted tumors decreases with increasing tumo...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-3291-6_76
更新日期：1985-01-01 00:00:00
abstract：:The kainate-type glutamate receptor displays strong modulation by monovalent anions and cations. This modulation is independent of permeation of the ion channel. Instead, structural, computational and biophysical evidence shows that receptor activity is controlled by binding of sodium and chloride ions at sites that s...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4419-9557-5_9
更新日期：2011-01-01 00:00:00
abstract：:Hypertension increases the risks of end-organ injury, maternal/fetal vulnerability, and total mortality. Throughout the world, it kills about 7.5 million people every year. During 1975-2015, the number of adults with hypertension increased from 594 million to more than 1.1 billion, mostly due to the increase in the lo...
journal_title：Advances in experimental medicine and biology
pub_type：
doi：10.1007/5584_2017_30
更新日期：2017-01-01 00:00:00
abstract：:The synapse between the inner hair cells (IHCs) and the spiral ganglion neurons (SGNs) in mammalian cochleae is characterized as having presynaptic ribbons and therefore is called ribbon synapse. The special molecular organization is reviewed in this chapter in association with the functional feature of this synapse i...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-13-6123-4_3
更新日期：2019-01-01 00:00:00
abstract：:Many aspects of the structure of chymosin are quite unique even though structure comparisons indicate a high degree of structural homology with other eukaryotic aspartic proteinases. The structural homology is shown to be directly related to the sequence homology which varies from 30 to 60%. The recent structures of p...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-6012-4_3
更新日期：1991-01-01 00:00:00
abstract：:G-protein coupled receptors (GPCRs) are seven helical transmembrane proteins that mediate cell-to-cell communication. They also form the largest superfamily of drug targets. Hence detailed studies of the three dimensional structure and dynamics are critical to understanding the functional role of GPCRs in signal trans...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-94-007-7423-0_3
更新日期：2014-01-01 00:00:00
abstract：:This is the first study to examine the potential effects of emissions from an air gun array on hearing of tropical reef fish using AEP thresholds measured in the field. Over 7 days, 51 Chromis viridis,47 Lutjanus kasmira, 20 Myripristis murdjan, and 10 Sargocentron spiniferum were tested. AEP thresholds were determine...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4419-7311-5_53
更新日期：2012-01-01 00:00:00
abstract：:Inhalation of high concentrations of zinc oxide (ZnO) particles may cause metal fume fever. A useful tool to characterize the reactivity of innate immune cells of an individual, e.g., after in vivo exposure, is the whole blood assay (WBA). The measurable outcome of WBA is the release of cytokines, especially pro-infla...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/5584_2019_471
更新日期：2020-01-01 00:00:00
abstract：:The variability associated with testing wheat for deoxynivalenol (DON) was measured using a 0.454 kg sample, a Romer mill, 25 g of comminuted subsample and the Romer Fluoroquant analytical method. The total variability was partitioned into sampling, sample preparation, and analytical variability components. Each varia...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-0629-4_8
更新日期：2002-01-01 00:00:00
