Abstract:
:We examined the impact of strong co-presence and function of glutathione peroxidase-1 (GPX-1) and glial cell line-derived neurotrophic factor (GDNF) on protecting the rat dopaminergic pheochromocytoma cell line PC12 against 6-hydroxydopamine (6-OHDA) and hydrogen peroxide (H₂O₂) toxicities. Primarily, GPX-1 over-expression by PC12 cells infected with pLV-GPX1 lentivirus vectors significantly increased cell survival against 6-OHDA toxicity (p<0.01). Addition of conditioned medium collected from growing wild-type astrocytes (Control astro-CM) increased survival rate of pLV-GPX1 infectants by 10% compared to their un-treated counterparts (p<0.05) and 20% compared to their treated empty vector control (p<0.01). Treatment of pLV-GPX1 cells with astro-CM of GDNF-over-secreting astrocytes (Test astro-CM) significantly induced GPX-1 expression, peroxidase enzymatic activity, and intra-cellular glutathione (GSH) levels. These changes paralleled with protection of 90% of GDNF⁺/GPX1⁺ PC12 cells against toxicity, a rate that was 37% up from their un-infected un-treated (GDNF⁻/GPX1⁻) controls (p<0.001), and 12% up from pLV-GPX1 cells that received only Control astro-CM (GPX⁺/GDNF⁻) (p<0.01). GPX-1 over-expression per se suppressed intra-cellular H₂O₂ elevation upon 6-OHDA exposure, and addition of GDNF medium significantly accelerated this suppression (p<0.01). Substitution of 6-OHDA with H₂O₂ induced similar intra-cellular changes and comparable protection levels. In all cell groups, increased cell survival against either compound was further confirmed by increased live cell counts measured by double staining. Following depletion of intra-cellular GSH, only 46% of pLV-GPX1 cells survived 6-OHDA toxicity, whereas over 70% of them were saved upon GDNF treatment (p<0.001). Moreover, capase-3 activation was reduced in pLV-GPX1 cells and maximized by addition of GDNF. Comparison analyses established correlations between GPX-1-GDNF co-presence and both enhanced cell protection and diminished levels of activated caspase-3. Our data collectively indicate that GDNF is capable of inducing anti-oxidant activities of intra-cellular GPX-1 and that growth-promoting potential of GDNF and anti-oxidant properties of GPX-1 can, in concert, maximize survival of dopaminergic neurons.
journal_name
Rejuvenation Resjournal_title
Rejuvenation researchauthors
Gharib E,Gardaneh M,Shojaei Sdoi
10.1089/rej.2012.1390subject
Has Abstractpub_date
2013-06-01 00:00:00pages
185-99issue
3eissn
1549-1684issn
1557-8577journal_volume
16pub_type
杂志文章abstract::The Strategies for Engineered Negligible Senescence (SENS) agenda contemplates specialized centers that offer a periodic rejuvenation and biogerontological maintenance for their clients. Although high-tech interventions are still in an early research phase, well-proven natural techniques, such as various forms of calo...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2009.0946
更新日期:2010-04-01 00:00:00
abstract::Spatial memory and cognition decline during aging. Montelukast, an FDA approved drug for the treatment of asthma, can restore spatial memory in old rats to levels similar to those of young animals. Treatment improves three hallmarks of aging in the brain: reducing microglial-mediated neuroinflammation, blood-brain bar...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2016.1903
更新日期:2016-12-01 00:00:00
abstract::Pulses up to 11 Tesla magnetic fields may generate pockets of currents along the walls of cellular material and may interfere with the overall ability of cell division. We used prokaryotic cells (Escherichia coli) and eukaryotic cells (murine fibroblasts) and exposed them to magnetic pulses of intensities ranging from...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2013.1487
更新日期:2014-04-01 00:00:00
abstract::The release of mitochondrial cytochrome c followed by activation of caspase cascade has been reported with aging in various tissues, whereas little is known about the caspase-independent pathway involved in mitochondrial dysfunction. To determine the functional impact of cytochrome c loss on mitochondrial respiratory ...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2007.0541
更新日期:2007-09-01 00:00:00
abstract::Macular degeneration is hallmarked by retinal accumulation of toxic retinoid species (e.g., A2E) for which there is no endogenous mechanism to eliminate it. This ultimately results in progressive dysfunction and loss of vision either in advanced age for genetically normal patients (age-related macular degeneration) or...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2018.2146
更新日期:2018-12-01 00:00:00
abstract::The article is a presentation at the 4th Conference of ESAAM, which took place on October 30-31, 2015, in Athens, Greece. Its purpose was not to cover all aspects of cellular aging but to share with the audience of the Conference, in a 15-minute presentation, current knowledge about the rejuvenating and repairing soma...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2016.1809
更新日期:2017-02-01 00:00:00
abstract::The vicious cycle theory postulates that typical mitochondrial DNA (mtDNA) mutations cause their host mitochondria to generate more superoxide and other reactive oxygen species (ROS) than do normal mitochondria, thereby promoting the occurrence of additional mtDNA mutations at an ever-accelerating rate. However, nearl...
journal_title:Rejuvenation research
pub_type: 杂志文章,评审
doi:10.1089/rej.2005.8.13
更新日期:2005-04-01 00:00:00
abstract::Pursuance of longevity is not only combating decrepitude but it is also extending the health span; otherwise longevity would result in a universal medical and social burden. As revealed by the literature, the attainment of a healthy life could be impacted by the social milieu. An inquiry of this kind could hardly be s...
journal_title:Rejuvenation research
pub_type: 杂志文章,评审
doi:10.1089/rej.2010.1071
更新日期:2011-02-01 00:00:00
abstract::New avenues to modulate the autophagy-lysosomal route of protein clearance have the potential to help treat several disease states to which the elderly are particularly vulnerable. Two recent papers identified distinct ways to tap into the lysosomal degradation pathway of autophagy to reduce age-related protein accumu...
journal_title:Rejuvenation research
pub_type: 评论,杂志文章
doi:10.1089/rej.2014.1585
更新日期:2014-08-01 00:00:00
abstract::Availability of reliable prognostic biomarkers that are also able to monitor preventive/therapeutic interventions in patients with mild cognitive impairment (MCI) is crucial. Cerebral brain-derived neurotrophic factor (BDNF) alterations were evidenced in Alzheimer's disease, but the value of blood BDNF in MCI is uncle...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2020.2307
更新日期:2020-10-01 00:00:00
abstract::Mitochondria play a central role in cellular physiology. Besides their classic function of energy metabolism, mitochondria are involved in multiple cell functions, including energy distribution through the cell, energy/heat modulation, regulation of reactive oxygen species (ROS), calcium homeostasis, and control of ap...
journal_title:Rejuvenation research
pub_type: 杂志文章,评审
doi:10.1089/rej.2015.1704
更新日期:2016-02-01 00:00:00
abstract::Walnuts kernels (Juglans regia L.) have rich antioxidants content and have been used in both cosmetic and pharmaceutical industry. This study dealt with the protective role of walnut kernels extracts (WK) on isoproterenol (ISO)-induced myocardial infarction (MI) in rats. Rats were pretreated with WK extracts (300 mg/k...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2018.2140
更新日期:2019-08-01 00:00:00
abstract::To determine the prognostic value of frailty and comorbidity for outdoor mobility loss and mortality in the elderly. The retrospective study was conducted among outpatients aged ≥60 years. Patients with ≥3 chronic illnesses were treated by doctors who had undergone a 72-hour geriatric training. The outdoor low-mobilit...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2019.2289
更新日期:2020-07-14 00:00:00
abstract::In otherwise healthy adults, moderate aerobic exercise extends life span and likely health span by 2-6 years. Exercise improves blood sugar regulation, and resistance exercise increases or maintains muscle mass and is associated with improved cognitive function. On the other hand, evidence for anti-oxidant supplements...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2013.1484
更新日期:2013-10-01 00:00:00
abstract::d-galactose (d-gal) is widely used to induce aging. However, it is still unclear whether long-term injection of d-gal affects the gastrointestinal functions of aging rats, and how. In this study, we investigated the effects of d-gal on the gastrointestinal functions of aging rats, especially from the perspective of fe...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2020.2352
更新日期:2020-09-29 00:00:00
abstract::This study was designed to elucidate the molecular mechanism underlying lysophosphatidic acid (LPA) and adenylyl cyclase inhibitor SQ22536 (ACI)-induced senescent human diploid fibroblast (HDF) proliferation. Because adenosine monophosphate (AMP)-activated protein kinase (AMPK) is known to inhibit cell proliferation, ...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2008.0709
更新日期:2008-08-01 00:00:00
abstract::The 2013 Rostock Symposium on Systems Biology and Bioinformatics in Aging Research was again dedicated to dissecting the aging process using in silico means. A particular focus was on ontologies, because these are a key technology to systematically integrate heterogeneous information about the aging process. Related t...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2013.1517
更新日期:2013-12-01 00:00:00
abstract::We developed a new model for initiating, coordinating, funding, and managing biomedical research projects. The concept involves engaging the patients with chronic conditions with no known cures into goal-oriented research activities. In this model, the patient seeks the help of a research organization to bring togethe...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2013.1471
更新日期:2013-10-01 00:00:00
abstract::The human mitochondrion contains a small circular genome that codes for 13 proteins, 22 tRNAs, and 2 rRNAs. The proteins are all inner membrane bound components of complexes involved in the electron transport system and ATP formation. Mutations to any of the 13 proteins affect cellular behavior because energy producti...
journal_title:Rejuvenation research
pub_type: 杂志文章,评审
doi:10.1089/rej.2006.9.182
更新日期:2006-07-01 00:00:00
abstract::Twenty years have passed since Kadenbach and Müller-Höcker first proposed that the age-related accumulation of mutant mitochondrial DNA is caused by its clonal expansion, rather than by a "vicious cycle" of de novo mutational events caused by the disruptive metabolic impact of prior ones. Proof that they were correct ...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2009.0879
更新日期:2009-06-01 00:00:00
abstract::Photoaging is the superposition of photodamage (ultraviolet [UV] radiation-induced) on the aging process. It is a major damaging consequence of free radical action. Curcumin (diferuloylmethane) is a phytochemical with diverse antioxidant and antiinflammatory properties. However, it shows a poor topical bioavailability...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2009.0906
更新日期:2010-08-01 00:00:00
abstract::Our recent studies have shown that Huogu (HG) formula was effective both in clinic experience and in experimental osteonecrosis of the femoral head (ONFH). Given that defective of bone marrow stromal cells (MSCs) contribute to the development of osteonecrosis and MSCs show enormous potential in the treatment of ONFH, ...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2015.1795
更新日期:2016-12-01 00:00:00
abstract::I propose a new model, called the "RNA memory" model, for the possible role of RNAs in the maintenance and establishment of cell identity. This is cytoplasmic memory obtained by the transmission of mother noncoding (nc) RNAs to daughter cells. These RNAs are able to activate transcription via sequence homology in daug...
journal_title:Rejuvenation research
pub_type: 杂志文章,评审
doi:10.1089/rej.2009.0957
更新日期:2010-04-01 00:00:00
abstract::Let us define human aging as the random accumulation of damage in the human organism's cells, tissues, or whole organism during life that increases the probability of death. This definition opens ways to postpone aging via risk factors to health. Studies show that changes in aging have postponed aging 0.15-0.20 years ...
journal_title:Rejuvenation research
pub_type: 杂志文章,评审
doi:10.1089/rej.2008.0675
更新日期:2008-04-01 00:00:00
abstract::Decades of studies of candidate genes show their complex role in aging-related traits. We focus on apolipoprotein E e2/3/4 polymorphism and ages at onset of cardiovascular diseases (CVD) and cancer in the parental and offspring generations of the Framingham Heart Study participants to gain insights on the role of age ...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2012.1362
更新日期:2013-02-01 00:00:00
abstract:BACKGROUND:Curcumin, an extract from the rhizome of the plant Curcuma longa (turmeric), has been widely used as a spice and herbal medicine in Asia. It has been suggested to have many biological activities, such as antioxidative, antiinflammatory, anticancer, chemopreventive, and antineurodegenerative properties. We ev...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2010.1031
更新日期:2010-10-01 00:00:00
abstract::Aging plays a central role in the occurrence of neurodegenerative diseases. Caloric restriction (CR) mitigates oxidative stress by decreasing the rate of generation of endogenous damage, a mechanism that can contribute to the slowing of the aging rate induced by this intervention. Various reports have recently linked ...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2007.0538
更新日期:2007-12-01 00:00:00
abstract:OBJECTIVE:This study examined the impact of estrogen replacement therapy with spirometry on pulmonary function in surgically castrated (salpingo-oophorectomy) postmenopausal women with genital prolapse. METHODS:The study included 60 postmenopausal women with pelvic organ prolapse. The study received institutional Ethi...
journal_title:Rejuvenation research
pub_type: 杂志文章,随机对照试验
doi:10.1089/rej.2012.1337
更新日期:2012-12-01 00:00:00
abstract::Astaxanthin (AST), a xanthophyll belonging to the family of carotenoids, is a potent antioxidant. The effect of AST on longevity and its physiological and molecular mechanism are still unclear. In this study, we proved that AST could prolong the life span of Caenorhabditis elegans. To uncover whether AST could delay a...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2020.2355
更新日期:2020-11-30 00:00:00
abstract::Interruption of insulin-like growth factor I (IGF-1) signaling has been demonstrated to prolong life span although the underlying mechanism has not been elucidated. The aim of this study was to examine the influence of severe IGF-1 deficiency on survival rate, cardiomyocyte viability, contractile function, and intrace...
journal_title:Rejuvenation research
pub_type: 杂志文章
doi:10.1089/rej.2007.0552
更新日期:2007-12-01 00:00:00