Mechanisms of ageing and development

Publisher: Elsevier

Journal description

Current impact factor: 3.51

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 3.51
2012 Impact Factor 3.264
2011 Impact Factor 3.439
2010 Impact Factor 4.857
2009 Impact Factor 4.179
2008 Impact Factor 3.915
2007 Impact Factor 4.308
2006 Impact Factor 3.846
2005 Impact Factor 2.812
2004 Impact Factor 2.866
2003 Impact Factor 3.214
2002 Impact Factor 2.867
2001 Impact Factor 1.841
2000 Impact Factor 1.897
1999 Impact Factor 1.788
1998 Impact Factor 1.583
1997 Impact Factor 1.143
1996 Impact Factor 0.89
1995 Impact Factor 1.182
1994 Impact Factor 1.124
1993 Impact Factor 1.349
1992 Impact Factor 1.571

Impact factor over time

Impact factor
Year

Additional details

5-year impact 3.91
Cited half-life 6.70
Immediacy index 0.63
Eigenfactor 0.02
Article influence 1.36
ISSN 1872-6216

Publisher details

Elsevier

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    • Permitted deposit due to Funding Body, Institutional and Governmental policy or mandate, may be required to comply with embargo periods of 12 months to 48 months .
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    • Publisher's version/PDF cannot be used
    • Articles in some journals can be made Open Access on payment of additional charge
    • NIH Authors articles will be submitted to PubMed Central after 12 months
    • Publisher last contacted on 18/10/2013
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: http://authors.elsevier.com/a/1R34Z_15Kb7hA9 Ageing is a cellular process with many facets, some of which are currently undergoing a paradigm change. It is the case of "mitochondrial theory of ageing", which, interestingly, has been found lately to cross paths with another ageing dysfunctional process - intracellular signalling - in an unexpected point (or place) - caveolae. The latter represent membrane microdomains altered in senescent cells, scaffolded by proteins modified (posttranslational or as expression) with ageing. An important determinant of these alterations is oxidative stress, through increased production of reactive oxygen species that originate at mitochondrial site. Spanning from physical contact points, to shared structural proteins and similar function domains, caveolae and mitochondria might have more in common than originally thought. By reviewing recent data on oxidative stress impact on caveolae and caveolins, as well as possible interactions between caveolae and mitochondria, we propose a hypothesis for senescence-related involvement of caveolins. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Mechanisms of ageing and development 05/2015; DOI:10.1016/j.mad.2015.04.003
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    ABSTRACT: Ionizing radiation-induced cellular senescence is thought to be caused by nuclear DNA damage that cannot be repaired. However, here we found that radiation induces delayed increase of intracellular oxidative stress after irradiation. We investigated whether the relief of delayed oxidative stress by ascorbic acid would suppress the radiation-induced cellular senescence in Syrian golden hamster embryo (SHE) cells. We observed that the level of oxidative stress was drastically increased soon after irradiation, then declined to the level in non-irradiated cells, and increased again with a peak on day 3 after irradiation. We found that the inductions of cellular senescence after X-irradiation were reduced along with suppression of the delayed induction of oxidative stress by treatment with ascorbic acid, but not when oxidative stress occurred immediately after irradiation. Moreover, treatment of ascorbic acid inhibited p53 accumulation at 3 days after irradiation. Our data suggested a delayed increase of intracellular oxidative stress levels plays an important role in the process of radiation-induced cellular senescence by p53 accumulation. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Mechanisms of ageing and development 05/2015; 146-148. DOI:10.1016/j.mad.2015.05.002
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    ABSTRACT: The Lou/C (LOU) rat is an obesity resistant strain with higher longevity and healthspan than common rats. The management of oxidative stress being important to successful aging, we characterized this process in the aging LOU rat. Male/female LOU rats were euthanized at 4, 20, 29 months. Macrodissected hippocampus, striatum, parietal cortex, cerebellum were assayed for tissue concentrations of glutathione (GSH), gamma-glutamyl-cysteine-synthetase (γ-GCS), total thiols, protein carbonyls, mRNAs of clusterin and the known protective enzymes thioredoxine-1 (TRX-1), glutaredoxine-1 (GLRX-1), superoxydismutase-1 (SOD-1). Brain levels of GSH, γ-GCS, total thiols remained constant with age, except for GSH and γ-GCS decreases in females. Clusterin, TRX-1, GLRX-1, SOD-1 mRNA levels were maintained or increased in the hippocampus with age. Age-dependency of the markers differed between sexes, with SOD-1 and TRX-1 decreases out of hippocampus in females. Since antioxidants were reported to decrease with age in the brain of Wistar rats, maintenance of GSH levels and of protective enzymes mRNA levels in the LOU rat brain could contribute to the preservation of cognitive functions in old age. Altogether, the successful aging of LOU rats may, at least in part, involve the conservation of functional antioxidant mechanisms in the brain, supporting the oxidative stress theory of aging. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
    Mechanisms of ageing and development 05/2015; DOI:10.1016/j.mad.2015.04.002
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    ABSTRACT: Connexin43 (Cx43) is critical for maintaining electrical conduction across atrial muscle. During progressive ageing atrial conduction slows associating with increasing susceptibility to arrhythmias. Changes in Cx43 protein expression, or its phosphorylation status, can instigate changes in the conduction of the cardiac action potential. This study investigated whether increased levels of activated c-jun N-terminal kinase (JNK) is responsible for the decline of Cx43 during ageing. Right atria from guinea pigs aged between 1 day and 38 months of age were examined. The area of the intercalated disc increased with age concurrent with a 75% decline in C43 protein expression. An age-dependent increase in activated-JNK correlated with a rise in phosphorylated Cx43, but also slowing of action potential conduction velocity across the atria from 0.38±0.01m/s at 1 month of age to 0.30±0.01m/s at 38 months. The JNK activator anisomycin increased activated JNK in myocytes and reduced Cx43 protein expression simulating ageing The JNK inhibitor SP600125, was found to eradicate almost all trace of Cx43 protein. We conclude that in vivo activation of JNK increases with age leading to the loss of Cx43 protein resulting in impaired conduction and contributing to the increasing risk of atrial arrhythmias with advancing age. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Mechanisms of ageing and development 05/2015; 291. DOI:10.1016/j.mad.2015.05.001
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    ABSTRACT: DNA damage is the prime activator of the enzyme poly(ADP-ribose) polymerase1 (PARP-1) whose overactivation has been proven to be associated with the pathogenesis of numerous central nervous system disorders such as ischemia, neuroinflammation and neurodegenerative diseases. Under oxidative stress conditions PARP-1 activity increases, leading to an accumulation of ADP-ribose polymers and NAD(+) depletion, that induces energy crisis and finally cell death. This review aims to explain the contribution of PARP-1 in neurodegenerative diseases, focusing on Alzheimer's and Parkinson's disease, to stimulate further studies on this issue and thereby engage a new perspective regarding the design of possible therapeutic agents or the identification of biomarkers. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Mechanisms of ageing and development 04/2015; 146. DOI:10.1016/j.mad.2015.04.001
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    ABSTRACT: Though defective genome maintenance and DNA repair have long been know to promote phenotypes of premature aging, the role protein methylation plays in these processes is only now emerging. We have recently identified the first N-terminal methyltransferase, NRMT1, which regulates protein-DNA interactions and is necessary for both accurate mitotic division and nucleotide excision repair. To demonstrate if complete loss of NRMT1 subsequently resulted in developmental or aging phenotypes, we constructed the first NRMT1 knockout (Nrmt1(-/-)) mouse. The majority of these mice die shortly after birth. However, the ones that survive exhibit decreased body size, female-specific infertility, kyphosis, decreased mitochondrial function, and early-onset liver degeneration; phenotypes characteristic of other mouse models deficient in DNA repair. The livers from Nrmt1(-/-) mice produce less reactive oxygen species (ROS) than wild type controls, and Nrmt1(-/-) mouse embryonic fibroblasts show a decreased capacity for handling oxidative damage. This indicates that decreased mitochondrial function may benefit Nrmt1(-/-) mice and protect them from excess internal ROS and subsequent DNA damage. These studies position the NRMT1 knockout mouse as a useful new system for studying the effects of genomic instability and defective DNA damage repair on organismal and tissue-specific aging. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Mechanisms of ageing and development 04/2015; 146. DOI:10.1016/j.mad.2015.03.012
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    ABSTRACT: In the context of the MARK-AGE study, anthropometric, clinical and social data as well as samples of venous blood, buccal mucosal cells and urine were systematically collected from 3337 volunteers. Information from about 500 standardised questions and about 500 analysed biomarkers needed to be documented per individual. On the one hand handling with such a vast amount of data necessitates the use of appropriate informatics tools and the establishment of a database. On the other hand personal information on subjects obtained as a result of such studies has, of course, to be kept confidential, and therefore the investigators must ensure that the subjects' anonymity will be maintained. Such secrecy obligation implies a well-designed and secure system for data storage. In order to fulfil the demands of the MARK-AGE study we established a phenotypic database for storing information on the study subjects by using a doubly coded system. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Mechanisms of ageing and development 03/2015; 32. DOI:10.1016/j.mad.2015.03.005
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    ABSTRACT: Genes which confer a relative longevity advantage may be regulated at the level of transcription or translation. Alternatively, pro-longevity genes may mediate their effects at the level of protein structure-functional relationships that are beneficially optimized in long-lived species. Longevity associated genes (LAGs) may be operationally defined as genes that confer beneficial effects and are relatively more conserved among long-lived species. Global and local protein sequence alignments of over 10,000 genes across at least 30 mammalian species were examined to identify LAGs. Known LAGs, including growth hormone receptor (GHR), and breast cancer 1, early onset (BRCA1), have strong associations with maximum lifespan by our analysis. Several common categories of protein function were observed among genes ranked with the strongest associations with MLS identified by all regression models. These genes included those that function in the immune system, cell cycle regulation, and DNA damage response. We provide a ranking of genes with the strongest associations with species maximum lifespan (MLS) by several phylogenetic generalized least squares regression models, including adjustment for confounding variables such as body weight and gestation length. Copyright © 2015. Published by Elsevier Ireland Ltd.
    Mechanisms of ageing and development 03/2015; 146-148. DOI:10.1016/j.mad.2015.03.004
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    ABSTRACT: p53 and NF-κB are key transcription factors in regulating the gene expression program of cellular and organismal senescence. PPM1B is a member of the protein phosphatase 2 C family and plays a role in negatively regulating p53 and NF-κB thereby possibly attenuating the gene expression program of cellular senescence. Here, possible involvement of PPM1B in replicative senescence has been investigated using the in vitro aging model of IMR-90 cells. PPM1B protein levels are progressively decreased in a replicative age-dependent manner. Importantly, PPM1B depletion induces a robust senescence phenotype as evidenced by significant growth arrest and senescence marker expression. Given that PPM1B depletion-induced senescence is partially rescued by inactivating p38 MAPK, our results identify PPM1B as a critical regulator of both p38 MAPK-dependent and -independent senescence pathways during normal cellular aging process.
    Mechanisms of ageing and development 06/2014; DOI:10.1016/j.mad.2014.03.003