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https://www.readbyqxmd.com/read/28650766/murine-mesenchymal-cells-that-express-elevated-levels-of-the-cdk-inhibitor-p16-ink4a-in-vivo-are-not-necessarily-senescent
#1
David Frescas, Brandon Hall, Evguenia Strom, Lauren P Virtuoso, Mahima Gupta, Anatoli S Gleiberman, Elena Rydkina, Vitaly Balan, Slavoljub Vujcic, Olga B Chernova, Andrei V Gudkov
Age-related health decline has been attributed to the accumulation of senescent cells recognized in vivo by p16(Ink4a) expression. The pharmacological elimination of p16(Ink4a)-positive cells from the tissues of mice was shown to extend a healthy lifespan. Here, we describe a population of mesenchymal cells isolated from mice that are highly p16(INK4a)-positive are proficient in proliferation but lack other properties of cellular senescence. These data, along with earlier reports on p16(Ink4a)-positive macrophages, indicate that p16(Ink4a)-positive and senescent cell populations only partially intersect, therefore, extending the list of potential cellular targets for anti- aging therapies...
June 26, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28649104/-aging-and-homeostasis-development-of-novel-adipor-targeted-drugs-with-exercise-mimicking-and-anti-aging-properties
#2
Miki Okada-Iwabu, Toshimasa Yamauchi, Masato Iwabu, Takashi Kadowaki
We have so far clarified that adiponectin, an adipocyte-secreted physiologically active substance, is decreased with the onset of obesity and that lifestyle-related diseases are primarily accounted for by the systemically decreased action of adiponectin/adiponectin receptors(AdipoRs). The activation of adiponectin/AdipoR has caloric restrictive and exercise-mimicking effects thus prolonging lifespan. We were the first in the world to succeed in identifying small-molecule compounds that serve as seed compounds for candidate AdipoR-activating drugs...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28647906/exogenous-gdf11-induces-cardiac-and-skeletal-muscle-dysfunction-and-wasting
#3
Teresa A Zimmers, Yanling Jiang, Meijing Wang, Tiffany W Liang, Joseph E Rupert, Ernie D Au, Francesco E Marino, Marion E Couch, Leonidas G Koniaris
Growth differentiation factor 11 (GDF11), a TGF-beta superfamily member, is highly homologous to myostatin and essential for embryonic patterning and organogenesis. Reports of GDF11 effects on adult tissues are conflicting, with some describing anti-aging and pro-regenerative activities on the heart and skeletal muscle while others opposite or no effects. Herein, we sought to determine the in vivo cardiac and skeletal muscle effects of excess GDF11. Mice were injected with GDF11 secreting cells, an identical model to that used to initially identify the in vivo effects of myostatin...
July 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28639749/evaluation-of-the-in%C3%A2-vivo-cosmetic-efficacy-of-the-mfiii-blue-cell-serum-gel-one-and-two-month-test-results
#4
Dina Tukhvatullina, Alain Béguin, Henry Pong, Maria Del Mar Cabarbas, Dmitry Klokol, Mike Ks Chan, Michelle B F Wong
INTRODUCTION: Skin is changing over time showing signs of aging: dryness, increase in visual and tactile roughness, decrease in collagen content and stiffness, and eventually formation of deep and surface wrinkles, and fine lines. METHODS: Eight-week open experimental study was conducted to test efficacy of MFIII Blue Cell Serum Gel. Main criteria to determine product efficacy by following skin biophysical techniques were as follows: skin moisturization, firmness, epidermal and dermal density, skin surface properties and sebum level, reduction in fine lines and wrinkles...
June 22, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28634693/rhepo-enhances-cellular-anti-oxidant-capacity-to-protect-long-term-cultured-aging-primary-nerve-cells
#5
Huqing Wang, Jiaxin Fan, Mengyi Chen, Qingling Yao, Zhen Gao, Guilian Zhang, Haiqin Wu, Xiaorui Yu
Erythropoietin (EPO) may protect the nervous system of animals against aging damage, making it a potential anti-aging drug for the nervous system. However, experimental evidence from natural aging nerve cell models is lacking, and the efficacy of EPO and underlying mechanism of this effect warrant further study. Thus, the present study used long-term cultured primary nerve cells to successfully mimic the natural aging process of nerve cells. Starting on the 11th day of culture, cells were treated with different concentrations of recombinant human erythropoietin (rhEPO)...
June 21, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28627707/tremella%C3%A2-fuciformis-polysaccharide-suppresses-hydrogen-peroxide-triggered-injury-of-human-skin-fibroblasts-via-upregulation-of-sirt1
#6
Tao Shen, Chao Duan, Beidong Chen, Meng Li, Yang Ruan, Danni Xu, Doudou Shi, Dan Yu, Jian Li, Changtao Wang
Tremella fuciformis polysaccharide (TFPS), which is the extract of Tremella fuciformis Berk, has previously been demonstrated to exhibit potent anti‑oxidative, anti‑inflammatory and anti‑aging effects. However, the mechanisms underlying these protective and therapeutic effects remain to be elucidated. The aim of the present study was to investigate the protective effects of TFPS on hydrogen peroxide‑induced injury of human skin fibroblasts and to elucidate the aforementioned underlying mechanisms...
June 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28612444/first-case-of-contact-dermatitis-caused-by-hydroxypropyl-tetrahydropyrantriol-used-in-an-anti-ageing-cream
#7
Haudrey Assier, Pierre Wolkenstein, Olivier Chosidow
No abstract text is available yet for this article.
July 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/28612271/overexpression-of-dnaj-like-chaperone-enhances-carotenoid-synthesis-in-chlamydomonas-reinhardtii
#8
Tateki Morikawa, Yusuke Uraguchi, Shohei Sanda, Satoshi Nakagawa, Shigeki Sawayama
Production of functional carotenoids using microalgae may facilitate the commercialization of anti-aging nutritional supplements. The green alga Chlamydomonas reinhardtii uses a non-mevalonate (MEP) pathway for isopentenyl diphosphate (IPP) synthesis. Two enzymes thought to play important roles in this MEP pathway to IPP synthesis are 1-deoxy-D-xylulose 5-phosphate synthase (DXS) and reductase (DXR). DnaJ-like chaperone (Orange protein) is thought to support phytoene synthase, a key enzyme in plant carotenoid synthesis...
June 13, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28611658/neuroprotective-and-anti-aging-potentials-of-essential-oils-from-aromatic-and-medicinal-plants
#9
REVIEW
Muhammad Ayaz, Abdul Sadiq, Muhammad Junaid, Farhat Ullah, Fazal Subhan, Jawad Ahmed
The use of essential oils (EOs) and their components is known since long in traditional medicine and aromatherapy for the management of various diseases, and is further increased in the recent times. The neuroprotective and anti-aging potentials of EOs and their possible mechanism of actions were evaluated by numerous researchers around the globe. Several clinically important EOs and their components from Nigella sativa, Acorus gramineus, Lavandula angustifolia, Eucalyptus globulus, Mentha piperita, Rosmarinus officinalis, Jasminum sambac, Piper nigrum and so many other plants are reported for neuroprotective effects...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28611316/effects-of-resveratrol-curcumin-berberine-and-other-nutraceuticals-on-aging-cancer-development-cancer-stem-cells-and-micrornas
#10
James A McCubrey, Kvin Lertpiriyapong, Linda S Steelman, Steve L Abrams, Li V Yang, Ramiro M Murata, Pedro L Rosalen, Aurora Scalisi, Luca M Neri, Lucio Cocco, Stefano Ratti, Alberto M Martelli, Piotr Laidler, Joanna Dulińska-Litewka, Dariusz Rakus, Agnieszka Gizak, Paolo Lombardi, Ferdinando Nicoletti, Saverio Candido, Massimo Libra, Giuseppe Montalto, Melchiorre Cervello
Natural products or nutraceuticals have been shown to elicit anti-aging, anti-cancer and other health-enhancing effects. A key target of the effects of natural products may be the regulation of microRNA (miR) expression which results in cell death or prevents aging, diabetes, cardiovascular and other diseases. This review will focus on a few natural products, especially on resveratrol (RES), curcumin (CUR) and berberine (BBR). RES is obtained from the skins of grapes and other fruits and berries. RES may extend human lifespan by activating the sirtuins and SIRT1 molecules...
June 12, 2017: Aging
https://www.readbyqxmd.com/read/28610607/resveratrol-distinctively-modulates-the-inflammatory-profiles-of-immune-and-endothelial-cells
#11
Joseph Schwager, Nathalie Richard, Franziska Widmer, Daniel Raederstorff
BACKGROUND: The phenolic substance resveratrol (RES) is a plant metabolite known to modulate numerous physiological functions and to exert beneficial effects as a cancer-chemopreventing agent and on neurological, hepatic, and cardiovascular systems. Since the compound affects the lifespan of yeast and flies it might be an anti-aging substance. Mechanistically, RES is involved in down regulating the inflammatory response. The pleiotropic effects of RES in cells of the immune and endothelial system were examined in this study...
June 13, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28609168/forever-young-visual-representations-of-gender-and-age-in-online-dating-sites-for-older-adults
#12
Ateret Gewirtz-Meydan, Liat Ayalon
Online dating has become increasingly popular among older adults following broader social media adoption patterns. The current study examined the visual representations of people on 39 dating sites intended for the older population, with a particular focus on the visualization of the intersection between age and gender. All 39 dating sites for older adults were located through the Google search engine. Visual thematic analysis was performed with reference to general, non-age-related signs (e.g., facial expression, skin color), signs of aging (e...
June 13, 2017: Journal of Women & Aging
https://www.readbyqxmd.com/read/28606929/targeting-oxygen-sensing-prolyl-hydroxylase-phd-for-metformin-associated-lactic-acidosis-treatment
#13
Tomoko Oyaizu-Toramaru, Tomohiro Suhara, Noriyo Hayakawa, Takashi Nakamura, Akiko Kubo, Shizuka Minamishima, Kyoji Yamaguchi, Takako Hishiki, Hiroshi Morisaki, Makoto Suematsu, Yoji Andrew Minamishima
Metformin is one of the most widely used therapeutics for type 2 diabetes mellitus and also has anti-cancer and anti-aging properties. However, it is known to induce metformin-associated lactic acidosis (MALA), a severe medical condition with poor prognosis, especially in individuals with renal dysfunction. Inhibition of prolyl hydroxylase (PHD) is known to activate transcription factor HIF (hypoxia-inducible factor) that increases lactate efflux as a result of enhanced glycolysis, but it also enhances gluconeogenesis from lactate in the liver that contributes to reducing circulating lactate levels...
June 12, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28602514/a-jasmonic-acid-derivative-improves-skin-healing-and-induces-changes-in-proteoglycan-expression-and-glycosaminoglycan-structure
#14
Elodie Henriet, Sibylle Jäger, Christian Tran, Philippe Bastien, Jean-François Michelet, Anne-Marie Minondo, Florian Formanek, Maria Dalko-Csiba, Hugues Lortat-Jacob, Lionel Breton, Romain R Vivès
BACKGROUND: Jasmonates are plant hormones that exhibit anti-cancer and anti-inflammatory properties and have therefore raised interest for human health applications. The molecular basis of these activities remains poorly understood, although increasing evidence suggests that a variety of mechanisms may be involved. Recently, we have reported that a jasmonate derivative (JAD) displayed anti-aging effects on human skin by inducing extracellular matrix (ECM) remodeling. Based on this observation, we have investigated here the effects of JAD on proteoglycans and glycosaminoglycan (GAG) polysaccharides, which are major cell-surface/ECM components and are involved in a multitude of biological processes...
June 7, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28597446/ontogenetic-characterization-of-sporangium-and-spore-of-huperzia-serrata-an-anti-aging-disease-fern
#15
Hua Long, Jing Li, You-You Li, De-Yu Xie, Qing-Zhong Peng, Li Li
BACKGROUND: Huperzia serrata is a medicinal plant used in Traditional Chinese Medicine, which has been used to prevent against aging diseases. It is mainly propagated by spores and grows extremely slowly. Due to severe harvest, it is a highly endangered species. In this report, we characterize ontogenesis of sporangia and spores that are associated with propagation. A wild population of H. serrata plants is localized in western Hunan province, China and protected by Chinese Government to study its development (e...
December 2016: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28591759/ppar%C3%AE-coactivator-1%C3%AE-nicotinamide-adenine-dinucleotide-and-renal-stress-resistance
#16
Ali Poyan Mehr, Samir M Parikh
With one of the highest mitochondrial densities in the body, the kidneys consume approximately 10% of total oxygen while constituting 0.5% of body mass. Renal respiration is linear to solute extraction, linking oxidative metabolism directly to tubular function. This fundamental role of mitochondria in renal health may become an "Achilles heel" under duress. Acute kidney injury (AKI) related to each major class of stressor - inflammation, ischemia, and toxins - exhibits early and prominent mitochondrial injury...
June 8, 2017: Nephron
https://www.readbyqxmd.com/read/28590410/depigmenting-effect-of-resveratrol-is-dependent-on-foxo3a-activation-without-sirt1-activation
#17
Soon-Hyo Kwon, Hye-Ryung Choi, Youn-A Kang, Kyoung-Chan Park
Resveratrol exhibits not only anti-melanogenic property by inhibiting microphthalmia-associated transcription factor (MITF), but also anti-aging property by activating sirtuin-1 (SIRT1). In this study, the relationship between depigmenting effect of resveratrol and SIRT1/forkhead box O (FOXO) 3a activation and was investigated. Resveratrol suppressed melanogenesis by the downregulation of MITF and tyrosinase via ERK pathway. Results showed that the expression of both SIRT1 and FOXO3a were increased. It is reported that SIRT1 is critical regulator of FOXO-mediated transcription in response to oxidative stress...
June 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28590053/bryostatin-and-its-synthetic-analog-picolog-rescue-dermal-fibroblasts-from-prolonged-stress-and-contribute-to-survival-and-rejuvenation-of-human-skin-equivalents
#18
Tapan K Khan, Paul A Wender, Daniel L Alkon
Skin health is associated with the day-to-day activity of fibroblasts. The primary function of fibroblasts is to synthesize structural proteins, such as collagen, extracellular matrix proteins, and other proteins that support the structural integrity of the skin and are associated with younger, firmer, and more elastic skin that is better able to resist and recover from injury. At sub-nanomolar concentrations (0.03-0.3 nM), bryostatin-1 and its synthetic analog, picolog (0.1-10 nM) sustained the survival and activation of human dermal fibroblasts cultured under the stressful condition of prolonged serum deprivation...
June 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28587401/antioxidant-properties-of-the-red-alga-asparagopsis-taxiformis-collected-on-the-north-west-algerian-coast
#19
Zoheir Mellouk, Ilhem Benammar, Djamil Krouf, Makhlouf Goudjil, Meriem Okbi, Willy Malaisse
The aim of the present study was to evaluate the total phenolic and lipid content, fatty acids profiles and in vitro antioxidant activities of aqueous and solvent extracts of the red seaweed Asparagopsis taxiformis, through six different investigations. The present study demonstrated that phenol contents (mg gallic acid/g dry weight) were highest in the aqueous and methanolic extracts, followed by the ethanolic, hydroethanolic and hydromethanolic extracts. The lowest phenol contents were identified in the three remaining extracts: Butanolic, petroleum ether and acetone extracts...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28587261/ulmus-macrocarpa-hance-extracts-attenuated-h%C3%A2-o%C3%A2-and-uvb-induced-skin-photo-aging-by-activating-antioxidant-enzymes-and-inhibiting-mapk-pathways
#20
Sun-Il Choi, Jin-Ha Lee, Jae-Min Kim, Tae-Dong Jung, Bong-Yeon Cho, Seung-Hyun Choi, Dae-Won Lee, Jinkyung Kim, Jong-Yea Kim, Ok-Hawn Lee
To protect from reactive oxygen species (ROS) damages, skin cells have evolved to have antioxidant enzymes, such as copper and zinc-dependent superoxide dismutase (SOD1), mitochondrial manganese-dependent superoxide dismutase (SOD2), catalase (CAT), glutathione peroxidase (GPX), and glutathione reductase (GR), and suppressed the expression of matrix metalloproteinases (MMPs) through the mitogen-activated protein kinase (MAPK) signaling pathways, such as c-Jun N-terminal kinase (JNK) and p38. Bioactive compounds analyses were performed using a high-performance liquid chromatography-photodiode array detector (HPLC-PDA) system...
June 5, 2017: International Journal of Molecular Sciences
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