long vs WBbt:0004017

Likewise, mutant mice were not more vulnerable to acute kainate-induced excitotoxicity or to long-term effects of recurrent focal seizures, and exhibited the same pattern of neurochemical alterations (e.g., bilateral induction of neuropeptide Y in granule cells) and morphogenic changes (enlargement and dispersion of dentate gyrus granule cells) as wild-type animals.

Although suramin reversibly inhibit the PR3 activity but in concentration of less than 250 microM it had no long-term effect on CHO-cells.

Mice that were pretreated with TcS were unable to develop T1D, whereas those receiving TcES early after T1D induction displayed significantly reduced insulitis and hyperglycemia along with increased recruitment of alternatively activated macrophages (AAMϕs) and myeloid-derived suppressor cells (MDSCs).

In contrast, the long, bilaterally symmetric processes of ALA itself were required for producing its physiological responses; when they were severed, responses to stimuli administered between the cut and the cell body were unaffected, while responses to stimuli administered posterior to the cut were abolished.

Here, we show that the absence of functional ERCC1-XPF or XPG endonucleases leads to stable and prolonged binding of the transcription/DNA repair factor TFIIH to DNA damage, which correlates with disease severity and induces senescence features in human cells.

Prolonged depolarization of ependymoglial cells after injury inhibits ependymoglial cell proliferation and subsequent axon regeneration.

Two long-lasting P-gp pump modulators (9 and 10) were identified; they were able to inhibit remarkably the P-gp substrate rhodamine-123 efflux on the resistant K562/DOX cell line after 60 min.

This strategy enabled us to specifically study a population of long-lived tumor cells enriched in CSCs, which show stem-like characteristics and induce metastases.

There is increasing evidence that prolonged and intensive chemotherapy often fails to eradicate leukemic stem cells, which are protected by the bone marrow niche and can induce relapse.

We show that NMP inhibits the incorporation of the radiolabeled long-chain fatty acid 14C-palmitate into glycopeptidolipids in cell surface lipids of log-phase M. abscessus.

Previously, we detected activation of RIPK1, RIPK3 and MLKL in hippocampal CA1 astrocytes, along with a reduction in astrocyte density, during the early stages of experimentally induced TLE-HS, providing strong evidence for necroptotic astrocytic cell death.

It was revealed that ivermectin (250 μg mL-1) disrupts the microtubule network, induces the loss of microtubule orientation, leads to microtubule curvature and shrinkage, and their longitudinal and cross-linked bundling in various cells of A. thaliana primary roots.

Prolonged application of kainate or N-methyl-D-aspartate to hemicords caused a depolarization of dorsal roots in association with an increased extra-cellular [K(+)].

The antibiotic blasticidin S inhibits peptide-chain elongation in extracts of bacteria and mammalian cells.

Long-distance communication between glial cells, seen as waves of fluorescence moving from cell to cell, probably through gap junctions, was induced by glutamate, 5-HT, and ATP.

Total dendritic length was slightly longer in the denervated CA1 cells and there was a selective and significant increase in both branches and terminals in the mid-stratum radiatum (300-550 microns from the soma using Sholl analysis) in the KA-treated rats compared to untreated controls, particularly for cells at 5 days post-lesion and later, which exhibited graded synaptically-evoked bursts.

These data provide the first evidence for a long-lasting increase of the PKC epsilon in the axons of granule cells caused by kainate-induced seizures and suggest that PKC epsilon may be involved in the functional and/or structural modifications of granule cells that occur after limbic seizures.

Long-term effects on its gene expression were measurable only in the CA1 hippocampal subfield, where major cell damage and astrocytosis have been reported to occur following kainate-induced seizure activity [Ben-Ari Y. et al. (1981) Neuroscience 7, 1361-1391; Lothman E.

In guinea pig gastric longitudinal (LM) and circular (CM) muscle strips, angiotensin-II (Ang-II) caused a concentration-dependent contraction that required extracellular calcium and that could not be attributed to the secondary release of agonists from neural elements.

For elucidation of mechanisms underlying long-term consolidation of transient extracellular signals, we have examined expression and degradation of particular Fos family member proteins required for assembly to the nuclear transcription factor activator protein-1 in this study.

Kainic acid induces long-latency excitotoxicity in granule cells via L-VSCC-mediated Ca2+ influx.

However, prolonged seizures during early-life enhance cellular injury and hyperexcitability induced by convulsive insults later in adulthood.

The transcription factor such as STAT3 which is controlled by ERK1/2 MAPK was increased along with Bcl-2 expression when the cells were treated with PA.

Prolonged seizures cause significant damage to the brain, and cellular damage due to status epilepticus may be related to the pathogenesis of epilepsy.

Kainate-induced seizures caused an increase in levels of cleaved PKCδ in the hippocampus, along with up-regulation of cleaved caspase-3 and phospho-14-3-3ζ (Ser58), as well as extensive hippocampal cell death as visualized with Fluoro-Jade B and anti-active caspase-3 staining.

Comparison of wild-type transcripts, which are continuously down-regulated during aging, with those down-regulated in the long-lived, copper-uptake mutant grisea, validated the relevance of age-related changes in cellular copper metabolism.

We proposed that deactivation of MAPK pathway modulated proteostasis and induced prolonged S-phase of the cell-cycle, contributing to the slow growth of eIF5B-KN cells. eIF5B silencing also inactivated the mTOR pathway, downregulated glutamine transporters, enhanced autophagy, and decreased 28S rRNA and 5.8S rRNA expression levels which were reversed by restoration of eIF5B expression.

In conclusion, we show that the microRNA response induced by caloric restriction can regulate important factors in processes such as longevity and aging and is an integral and important component of the cellular response to caloric restriction.

I have led the Botryllus genome project and developed a novel method to obtain a synthetic long read sequence, identified Botryllus stem cells and stem cell niches, isolated the gene that controls self/non self-recognition and characterized its immune system on the cellular and molecular levels.

Periodic fasting and other dietary restrictions can promote entry into a longevity program characterized by cellular protection and optimized function, and the activation of regenerative processes that lead to rejuvenation.

We introduce the dynamical systems theory to capture two general means for promoting longevity-the creation of a stable fixed point in the "healthy" state of the cell and the "dynamic stabilization" of the system around this healthy state through environmental oscillations.

We introduce the dynamical systems theory to capture two general means for promoting longevity - the creation of a stable fixed point in the "healthy" state of the cell and the dynamic stabilization of the system around this healthy state through environmental oscillations.

In the brain, particularly in the hypothalamus, aging and longevity are regulated by such cell non-autonomous signaling mechanisms.

We conclude that telomerase activation is a conserved mechanism for maintaining long-term cell proliferation capacity and preventing senescence, not only in cellular models or embryonic life stages but also in adult multicellular organisms.

Furthermore, the expression of the long isoforms of PDE4D is selectively elevated in activated hepatic stellate cells, leading to the enhanced accumulation of extracellular matrix components.

A relatively new model of HF, the spontaneously hypertensive heart failure (SHHF) rat spontaneously and reproducibly develops left ventricular hypertrophy (LVH) and progresses to HF, thus enabling longitudinal studies to examine the cellular and molecular bases for hypertension-induced cardiac hypertrophy and subsequent HF.

Other potential longevity genes, such as sirtuins, are involved in regulating the response to cellular stress, including caloric restriction.

In Saccharomyces cerevisiae (yeast), the deletion of Sir2 increases DNA damage but in combination with longevity mutations in principal intracellular signal transduction mediators, or in combination with calorie restriction it causes a further increase in the chronological lifespan as well as an increase in the stress resistance and a major reduction in age-dependent genomic instability.

In summary, the present finds demonstrate that Wnt5a is essential for normal prostate development where it regulates bud outgrowth, ductal elongation, branching, cell polarity and lumenization.

Long non-coding RNAs (lncRNAs) regulate transcriptional editing, cellular function, and biological processes.

Whether these nematode products induce antigen-specific long-lived memory T cells and thereby confer protection against a challenge infection is not known yet.

Recent studies have uncovered that aging and longevity are regulated by cell non-autonomous signaling mechanisms in several organisms.

Our results show that 8 weeks postimmunization, HES induces long-lived functional memory Th2 cells at the site of immunization in the peritoneal cavity.

In this study, we show that the long noncoding RNA gm40262, predominantly expressed in hepatic stellate cells (HSCs), is upregulated in AE.

We herein show that gm40262, a long noncoding RNA predominantly expressed in hepatic stellate cells (HSCs), is involved in hepatic fibrogenesis during infection by activating HSCs and promoting extracellular matrix production.

Infection of A. cantonensis caused prolonged VEP latency, obvious inflammatory cell infiltration in the retina, damaged retinal ganglions and retinal swelling, followed by optic nerve fibre demyelination and a decreasing number of axons at 21 dpi.

Mucosal immunization further induced long-term T lymphocyte memory with increased central (CD62L+CD44+) and effector (CD62L-CD44+) memory subsets of both CD4 and CD8 T cells at 60 days after the last immunization.

Long-term treatment of parasite stem cell cultures with serotonin stimulated development towards the parasite metacestode stage.

IL-10, a cytokine produced by CD4+ T lymphocytes belonging to the Th-2 subset, has previously been shown to inhibit the synthesis of IFN-gamma by both T cells and NK cells.

However, prolonged exposure to activated J774 cells for 72 h resulted in parasite death.

Experimental injection of H. elongata excretory/secretory products modulated haemopoiesis toward increasing a juvenile cells proportion by 7th day post-injection.

Longevity factors promote stress resistance and cellular survival.

However, there are long-lasting biotrophic plant-pathogen interactions, such as the interaction between parasitic nematodes and plant roots during which defense responses are suppressed and root cells are reorganized to specific nurse cell systems.

The nematode parasites that cause human lymphatic filariasis survive for long periods in their vascular habitats despite continual exposure to host cells.

Downregulation of protein kinase C by prolonged incubation of the pituitary cells with high concentrations of active phorbol esters abolished protein kinase C activity and also prevented the phosphorylation induced by GnRH, or [D-Nal(2)6]GnRH.

In long-term incubation experiments, SCF pretreatment for 18-24 hr significantly enhanced Ag-induced histamine secretion, but did not affect Ag-induced intracellular Ca2+ levels.

The heterotrimeric G-protein alpha subunit has long been considered a bimodal, GTP-hydrolyzing switch controlling the duration of signal transduction by seven-transmembrane domain (7TM) cell-surface receptors.

This immunomodulation allows long-term persistence but also prevents severe pathology due to downregulation of cellular immune responses.

Our electroporation-based transient transformation protocol provides the suite of tools long required for functional analysis and developmental studies at single cell levels.

To survive prolonged anoxia and prevent cellular damage associated with reactive oxygen species, these turtles have developed numerous adaptions, including highly effective antioxidant defenses.

Finally, integrating functional studies along with molecular genetics and epigenetic approaches would expand our understanding of cellular regulation in vivo and greatly enhance the possibilities for rationally modulating stem cell behavior in their natural environment.

RNAi of map3k1 causes ectopic differentiation of eye progenitors along their migratory path, resulting in dispersed, ectopic eye cells and eyes.

Here, we proposed long-term surviving and angiogenesis-inducing stem cell with high cell retention thanks to fluid immiscible liquid micro-droplets bio-inspired by a glue modality 'complex coacervate' found in the sandcastle worm.

The most differentially phosphorylated protein (30-fold increase in phosphorylation) was 14-3-3, whose function is known to be modulated by phosphorylation, belonging to a signal transduction protein family that regulates a variety of processes in all eukaryotic cells.

Since relatively long incubation period was required for the expression of such reconstituting activities, bone marrow cells seem to contain precursor cells of the effector and/or regulator cells.

Although viral infections elicit robust interferon-γ (IFN-γ) and long-lived antibody-secreting cell (ASC) responses, the roles for IFN-γ and IFN-γ-induced transcription factors (TFs) in ASC development are unclear.

Moreover, many genes belonging to the same family are differently regulated in feeding cells.

Ad5IL-12 administered 1 day after infection prolonged worm survival and inhibited infection-induced muscle hypercontractility and goblet cell hyperplasia.

In comparative analyses of 9dpi to 6dpi (base line), these pathways, along with coumarin biosynthesis, cellulose biosynthesis and homogalacturonan degradation are induced.

Bcl-2 has long been the only known intracellular regulator of the PCD pathway(s), although its ability to prevent apoptosis is not universal.

However, SLP3 over-expression triggered apoptotic-like death following prolonged exposure to oxidative stress or when cells were induced to form hyphae.

This mDcTMP now allows sustained PM localization of eDHFR-fusion proteins (over several hours to a day), and it was applicable to inducing prolonged signal activation and cell differentiation. mDcTMP also worked in live nematodes, making it an attractive new tool for probing and controlling living systems.

It was found that the longevity-promoting effects of isoprenol were associated with improved age-associated physiological behaviour and reduced intracellular reactive oxygen species (ROS) accumulation.

We further reveal how the velocity of spindle elongation is regulated: coupled to cell size, the amount of kinesin-6 Klp9 molecules increases, resulting in an acceleration of spindle elongation in anaphase B.

Here, we show that prolonged Gαq stimulation results in the retraction of neurites in PC12 cells and the rupture of neuronal synapses by modulating membrane tension.

Stress response pathways regulate proteostasis and mitigate macromolecular damage to promote long-term cellular health.

Acid-sensitive ion channels belonging to the degenerin/epithelial sodium channel (DEG/ENaC) family activate in response to extracellular protons and are considered unique to deuterostomes.

Starvation has also been shown to promote long-term survival; however, we found that the functions of glucose and cholesterol in relation to these cell divisions are distinct from their effects on survival.

Although these neurotoxic challenges have long been considered to be cell-intrinsic, considerable evidence now supports that misfolded human disease proteins originating in one neuron can appear in neighboring cells, a phenomenon proposed to promote pathology spread in human neurodegenerative disease.

The results of the conducted analyses showed that quercetin feeding prolonged lifespan, suppressed age-related motility retardation, improved motility recovery after heat stress, and decreased the production of both intercellular and mitochondrial reactive oxygen species in the analysed Caenorhabditis elegans strains, likely by modulating the insulin-like signalling (ILS) pathway and p38-mitogen-activated protein kinase (MAPK) pathway.

They belong to the voltage-gated ion channel superfamily but their activities are controlled by intracellular cyclic nucleotides instead of transmembrane voltage.

We show here that the AMP-activated protein kinase (AMPK) and genes controlling autophagy are required for proper elongation of epidermal cells following the RhoA-like program and are dispensable for other cells.

Tubulins and microtubules interact with a long list of other cellular proteins that regulate tubulin homeostasis, modify microtubule dynamics, and control incorporation into or disassociation of higher-order cellular structures such as spindles or ciliary axonemes.

SA-EE possesses both longevity effects and neuroprotective activity against glutamate-induced cell death, supporting its therapeutic potential for the treatment of age-associated neurodegenerative diseases.

In our previous studies, Gengnianchun (GNC), a traditional Chinese medicine formula with a prolongevity effect, protected against Aβ-induced cytotoxicity in pheochromocytoma cells (PC-12 cells) and hippocampal cells.

Thus, Kruppel-like family of transcription factors constitute a transcriptional regulatory point for the modulation of autophagy and longevity in C. elegans with conserved effects in the murine vasculature and potential implications for mammalian vascular aging.KLF family transcription factors (KLFs) regulate many cellular processes, including proliferation, survival and stress responses.

We further show that proprioceptive feedback can suppress neuromechanical phase lags during undulatory locomotion, contrasting with well studied advancing phase lags that have long been a signature of centrally generated, feed-forward control.This article is part of a discussion meeting issue 'Connectome to behaviour: modelling C. elegans at cellular resolution'.

The in vivo test showed PYR greatly prolonged the survival of infected C. elegans. qPCR results revealed that most of the genes related to sterol biosynthesis were considerably down-regulated in PYR-treated cells.

Possessing distinct ultrastructural features such as microtubule-membrane spanning Y-links, the ∼0.2-1.0-μm long TZ is thought to act as a gated cytosolic (size dependent) and membrane diffusion barrier that drives ciliary compartmentalization by preventing unregulated protein exchange between the cilium and the rest of the cell.

Neural circuits have long been known to modulate myogenic muscles such as the heart, yet a mechanistic understanding at the cellular and molecular levels remains limited.

Finally, along with a reduced production of mature transcripts, we propose a model in which the retina-specific cell death in s-adRP patients can be induced through genomic instability.

One mechanism contributing to the conserved effect of DR on longevity is the cellular recycling process autophagy, which is induced in response to nutrient scarcity and increases sequestration of cytosolic material into double-membrane autophagosomes for degradation in the lysosome.

A structure-function analysis revealed that the 61 amino acid long WH domain of EIF-3.K, potentially involved in protein-DNA/RNA interactions, is both necessary and sufficient for the cell death-promoting activity of EIF-3.K.

We report that eukaryotic elongation factor 2 kinase (eEF2K), which is activated by AMP-kinase (AMPK), confers cell survival under acute nutrient depletion by blocking translation elongation.

Using this model, downstream effectors of dietary restriction-induced longevity have been elucidated, including neuropeptides and cell-surface receptors.

Proteins belonging to Bcl-2 family regulate intrinsic cell death pathway.

Netrin signaling not only functions redundantly with some Wnts, but also counterbalances the effects of others to guide A/P migrations, while the involvement of Wnt signaling in D/V guidance identifies Wnt signaling as one of the long sought mechanisms that functions in parallel to Netrin signaling to promote D/V guidance of cells and axons.

Here, we report that canonical Wnt signaling (i) modulates muscular pathology in mutant PABPN1 nematodes, and (ii) cooperates with the Sir2-FoxO longevity pathway to confer protection against mutant PABPN1 toxicity at the cellular and behavioral levels.

However, whether they interact with longevity/cell survival pathways to confer protection against disease-associated proteotoxicity remains largely unknown.

We propose a model whereby Gqalpha signaling differentially regulates pathogen sensitivity, oxidative stress, and longevity through cell autonomous and noncell autonomous effects on p38 MAPK and insulin/IGF1 signaling, respectively.

The ectopic expression of Ttyh1 also induced long filopodia, which were branched and dynamic in both stationary and migratory cells.

p97/VCP/Cdc48p belongs to the AAA (ATPases associated with diverse cellular activities) family and has been indicated to be required for mitotic M-phase.

To study how network architecture changes during epileptogenesis, long-distance projecting hilar cells were gradually removed in the structural model, causing massive reductions in the number of total connections.

Increasing autophagic activity by prolonged starvation, rapamycin treatment inhibiting TOR (target of rapamycin) signaling, or genetic intervention, causes cellular atrophy in worms, flies and mammalian cell cultures.

Here, we report that longevity and cell metabolism modifiers modulate mutant PABPN1 toxicity in the muscle cell.

Long-range, cell non-autonomous Wnt signals regulate vulval induction.

Therefore, dsRNA longer than 30 bp cannot be used to induce specific gene knockdown effect in these cells.

The approach of using long dsRNA (up to 1-2 kb) in C. elegans and Drosophila to induce gene silencing cannot be similarly used in mammalian cells, where introduction of long dsRNA activates the dsRNA-dependent protein kinase PKR.

Crosses of Rtel(+/-) mice with Mus spretus showed that Rtel from the Mus musculus parent is required for telomere elongation of M. spretus chromosomes in F1 cells.

TGS also inhibits elongation and controls alternative splicing in mammalian cells.

Long chain polyunsaturated fatty acids (LCPUFAs) increase cell membrane fluidity and enhance the number of insulin receptors and the affinity of insulin to its receptors; suppress TNF-alpha, IL-6, macrophage migration inhibitory factor (MIF) and leptin synthesis; increase the number of GLUT-4 receptors, serve as endogenous ligands of PPARs, modify lipolysis, and regulate the balance between pro- and anti-oxidants, and thus, play a critical role in the pathogenesis of insulin resistance.

However, in jawed vertebrates, dsRNA longer than 30 bp can induce interferon and thus trigger undesirable side effects instead of initiating RNAi. siRNAs have been shown to act as potent inducers of RNAi in cultured mammalian cells.

Elongation is associated with an apparent pressure on the internal cells of the embryo, and cytochalasin D reversibly inhibits both elongation and the increase in pressure.

A strong candidate for the long-range chemoattractant is netrin-1, a homologue of the UNC-6 protein of C. elegans and a distant relative of laminin, which is expressed by floor plate cells and which can both promote and orient commissural axon outgrowth.

Our data suggest that p35 must directly or indirectly inhibit prICE.

Investigation of the protein product of the oestrogen-regulated gene LIV-1, implicated in metastatic breast cancer, has revealed 10 protein sequences of unknown function that belong to a new family with potential to control intracellular Zn2+ homeostasis.

The last two years have seen enormous progress in the elucidation of the molecular interactions that lie at the heart of this conserved machinery, along with major insights both into how cell death is activated in the worm and into the mechanism of recognition and engulfment of the cell corpses.

Regulating the balance between self-renewal (proliferation) and differentiation is key to the long-term functioning of all stem cell pools.

Notably, low molecular weight compounds (<10 kDa) isolated from the G. lucidum water extract prolong lifespan of C. elegans and the same compounds induce autophagy in human cells.

We also explore the nature of the interactions that leave permanent or long-term memory in the host and propose mechanisms by which the microbiota can regulate the development and epigenetic reprogramming of germ cells, thus influencing the inheritance of the host.

Indeed, recent studies in C. elegans have revealed that lipid metabolism plays a key role in controlling longevity by impinging on a plethora of molecular pathways and cell types.

Here we reveal how the most well-studied longevity intervention, dietary restriction, acts in-part through a cell non-autonomous signaling pathway that is inhibited by the presence of attractive smells.

Surprisingly, we find that glial XBP-1s enhances proteostasis and longevity by cell non-autonomously reprogramming organismal lipid metabolism and activating autophagy.

Expression of the UPRER transcription factor, XBP-1s, in these glia increases stress resistance, and longevity, and activates the UPRER in intestinal cells via neuropeptides.

In addition, an increasing number of traditional Chinese medicine polysaccharides have been found to prolong the lifespan of C. elegans by reducing inflammation, regulating intestinal flora, and affecting immune cell function.

We show how Notch and Wnt signaling pathways, along with mechanical forces from cell interactions, regulate cell fate decisions and size asymmetries.

Guttiferone E and Oblongifolin B inhibited the intracellular proliferation of T. gondii and demonstrated several targets of action against bacteria and T. gondii through in silico analysis.

We systematically evaluated the effectiveness of T-CLASS with diverse datasets, including longevity-promoting regimens in Caenorhabditis elegans, cellular senescence by different means in both cultured mouse primary cells and cultured human cells, and human sarcopenia.

Using long-term live imaging, cell-specific genetic perturbations, and biophysical assays, we show that the core cell mechanically guides valve morphogenesis through two mechanisms: it directs a sliding cell-cell junction that facilitates expansion of the valve's apical domain, and it promotes assembly of a contractile actomyosin network within the valve cell, essential for valve contraction and animal fertility.

Here, we review how various classes of ncRNAs regulate aging and longevity, by focusing on recent research using the nematode Caenorhabditis elegans, an excellent model for aging research.

In long-lived cells such as neurons, proteostasis involves the regulated degradation and replacement of proteins to ensure their quality and appropriate abundance.

Connective tissue growth factor (CTGF) belongs to a family of secreted, extracellular matrix-associated proteins that are involved in the regulation of cellular functions such as adhesion, migration, mitogenesis, differentiation and survival.

The two drugs led to diverse and specific phenotypes that depended on TORC1 inhibition, including prolonged chronological lifespan, inhibition of global translation, inhibition of cell growth and division, and reprograming of global gene expression mimicking nitrogen starvation.

During the long-term interaction between helminths and their hosts, helminth-derived extracellular vesicles (EVs) can participate in host immunomodulatory processes by secreting bioactive molecules (BMAs).

Decreased values of beta and gamma globulins in all the experimental groups along with higher worm recoveries indicate suppression of humoral immune response by lead in association with higher worm recoveries indicate suppression of humoral immune response by lead in association with the cellular components since these globulins are known to contain antibodies.

An attractive approach is to take advantage of the exceptionally long circulation half-life of serum albumin or IgG, which is attributed to a pH-dependent interaction with the neonatal Fc receptor (FcRn) rescuing these proteins from intracellular degradation.

It has long been believed that Pmp3p-related proteins have a common and important role in the modulation of plasma membrane potential and in the regulation of intracellular ion homeostasis.

Despite the strong geroprotective action of exogenous H2S in C. elegans, there are controversial effects of hydrogen sulfide and its donors on longevity in other models, as well as on stress resistance, age-related pathologies and aging processes, including regulation of senescence-associated secretory phenotype (SASP) and senescent cell anti-apoptotic pathways (SCAPs).

Elongation factor 2 kinase (eEF-2K), also known as calmodulin-dependent protein kinase III, is a member of the calmodulin-mediated signaling pathway that links activation of cell surface receptors to cell division.

Here we show that Akt activity increases along with cellular senescence and that inhibition of Akt extends the lifespan of primary cultured human endothelial cells.

Plasma-membrane calcium pumps (PMCAs) are responsible for the expulsion of Ca(2+) from the cytosol of all eukaryotic cells and are one of the major transport systems involved in long-term regulation of resting intracellular Ca(2+) concentration.

However, data for acquired epilepsy are inconsistent, which, at least in part, may be due to the poor brain penetration and long brain persistence of rapamycin and the fact that it blocks only one of the two cellular mTOR complexes.

Kainate-induced stimulation of arachidonic acid release, calcium influx, accumulation of lipid peroxides and products of their decomposition, especially 4-hydroxynonenal (4-HNE), along with alterations in cellular redox state and ATP depletion may play important roles in kainate-induced cell death.

The prolonged IEG expression in the temporal lobe appeared to be localized in regions where the cells are in stress, but still viable.

Second, selective types of autophagy may be crucial for longevity by specifically targeting dysfunctional cellular components and preventing their accumulation.

In his introductory chapter of the Mutation Research special issue on 'Genetic Instability and Aging', the late Bernard Strehler provided some historical perspectives on the long-standing hypothesis that aging is primarily caused by changes in the genome of somatic cells (Strehler, 1995, Mutat.

Healthy longevity is likely to be most enhanced by factors that actively suppress excessive cell division.

Experiments involving the inoculation of [3H]thymidine along with mff or saline alone and studies involving the administration of colchicine suggest that increased hemocyte populations in immune-activated A. aegypti are a result of mitotic division of circulating blood cells.

Conclusions: These observations suggest that rBmAsnRS has immunomodulatory effects with modified Th2 response along with suppressed cellular proliferation indicating the essence of this molecule for immune evasion by the parasite.

This revealed the significance of ALT MAP in stimulating innate immunity in offering protective immune response probably through the activation of complement cascade along with stimulation of cellular response.

The findings of this study suggest that CR and quercetin promote the longevity of S. cerevisiae through a shared metabolic pathway and highlight intracellular trehalose and proline as potentially valuable biomarkers of cellular stress and longevity in yeast cells.

However, long treatment of cells with FdU induces very short replicons and may promote apoptosis.

Since prolongation of mitosis was shown to affect cell viability, this may resemble a mechanism to regulate mitosis duration.

Overall, these results indicate that, for worms that survive, cryopreservation produces limited long-term effects, but do indicate that some phenotypes could be used in further analyses of the cellular damage induced by cryopreservation.

Instead, the animal appears to be substantially longer lived than previously appreciated, and genes expressed in stem cells are upregulated with age, while germline genes are downregulated.

Our results imply that (1) longevity pathways can regulate aging stem cells through anatomically separable mechanisms, (2) stem cell maintenance is not necessarily prioritized and (3) stem cell regulation can occur at the level of an entire organ system such as the reproductive system.

The lifespan-prolonging and health-promoting effects of H2S in C. elegans are likely due to the antioxidant action of this highly cell-permeable gas.

This class of siRNA may act broadly as a rheostat allowing prolonged stimulation to dampen gene expression and promote cellular memory formation.

Alternatively, FoxOs may promote longevity cell nonautonomously by signaling to themselves (FoxO to FoxO) or other factors (FoxO to other) in distal tissues.

Longer-term exposures lead to a progressive selenium-induced motility impairment that could be partially prevented by coincident exposure to the cellular antioxidant-reduced glutathione.

Previously, our lab has shown that model eukaryotes such as Saccharomyces cerevisiae, Caenorhabditis elegans, and Danio rerio all retain high viability after prolonged arrest in a state of anoxia-induced suspended animation, implying that in such a state, progression through the cell division cycle is reversibly arrested in an orderly manner.

The high correlation between stress resistance and longevity suggests that the same molecular activities that defend the cell from stress can defend the cell from the damage caused by aging.

Emerging evidence suggests that activation of autophagy protects against age-associated diseases and promotes longevity, but the roles and regulatory mechanisms of autophagy in cellular senescence are not well understood.

Our findings suggest that ATF7 is a longevity-promoting factor that lowers cellular senescence and inflammation in long-lived individuals.

Spindle misorientation in the dynein mutant can be partially rescued by elongating cells, implying that dynein-dependent force generation and cell shape jointly promote correct asymmetric division of epithelial stem cells.

Parietal cells appear to be a key target, resulting in secondary increases in serum gastrin, pit elongation, loss of surface mucins and inhibition of chief cell maturation.