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Banse SA, Sedore CA, Johnson E, Coleman-Hulbert AL, Onken B, Hall D, Jackson EG, Huynh P, Foulger AC, Guo S, Garrett T, Xue J, Inman D, Morshead ML, Plummer WT, Chen E, Bhaumik D, Chen MK, Harinath G, Chamoli M, Quinn RP, Falkowski R, Edgar D, Schmidt MO, Lucanic M, Guo M, Driscoll M, Lithgow GJ, Phillips PC. Antioxidants green tea extract and nordihydroguaiaretic acid confer species and strain-specific lifespan and health effects in Caenorhabditis nematodes. GeroScience 2024; 46:2239-2251. [PMID: 37923874 PMCID: PMC10828308 DOI: 10.1007/s11357-023-00978-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 10/08/2023] [Indexed: 11/06/2023] Open
Abstract
The Caenorhabditis Intervention Testing Program (CITP) is an NIH-funded research consortium of investigators who conduct analyses at three independent sites to identify chemical interventions that reproducibly promote health and lifespan in a robust manner. The founding principle of the CITP is that compounds with positive effects across a genetically diverse panel of Caenorhabditis species and strains are likely engaging conserved biochemical pathways to exert their effects. As such, interventions that are broadly efficacious might be considered prominent compounds for translation for pre-clinical research and human clinical applications. Here, we report results generated using a recently streamlined pipeline approach for the evaluation of the effects of chemical compounds on lifespan and health. We studied five compounds previously shown to extend C. elegans lifespan or thought to promote mammalian health: 17α-estradiol, acarbose, green tea extract, nordihydroguaiaretic acid, and rapamycin. We found that green tea extract and nordihydroguaiaretic acid extend Caenorhabditis lifespan in a species-specific manner. Additionally, these two antioxidants conferred assay-specific effects in some studies-for example, decreasing survival for certain genetic backgrounds in manual survival assays in contrast with extended lifespan as assayed using automated C. elegans Lifespan Machines. We also observed that GTE and NDGA impact on older adult mobility capacity is dependent on genetic background, and that GTE reduces oxidative stress resistance in some Caenorhabditis strains. Overall, our analysis of the five compounds supports the general idea that genetic background and assay type can influence lifespan and health effects of compounds, and underscores that lifespan and health can be uncoupled by chemical interventions.
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Affiliation(s)
- Stephen A Banse
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR, 97403, USA
| | - Christine A Sedore
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR, 97403, USA
| | - Erik Johnson
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR, 97403, USA
| | | | - Brian Onken
- Department of Molecular Biology and Biochemistry, Nelson Biological Laboratories, Rutgers University, Piscataway, NJ, 08854, USA
| | - David Hall
- The Buck Institute for Research On Aging, Novato, CA, 94945, USA
| | - E Grace Jackson
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR, 97403, USA
| | - Phu Huynh
- Department of Molecular Biology and Biochemistry, Nelson Biological Laboratories, Rutgers University, Piscataway, NJ, 08854, USA
| | - Anna C Foulger
- The Buck Institute for Research On Aging, Novato, CA, 94945, USA
| | - Suzhen Guo
- Department of Molecular Biology and Biochemistry, Nelson Biological Laboratories, Rutgers University, Piscataway, NJ, 08854, USA
| | - Theo Garrett
- The Buck Institute for Research On Aging, Novato, CA, 94945, USA
| | - Jian Xue
- Department of Molecular Biology and Biochemistry, Nelson Biological Laboratories, Rutgers University, Piscataway, NJ, 08854, USA
| | - Delaney Inman
- The Buck Institute for Research On Aging, Novato, CA, 94945, USA
| | | | - W Todd Plummer
- The Buck Institute for Research On Aging, Novato, CA, 94945, USA
| | - Esteban Chen
- Department of Molecular Biology and Biochemistry, Nelson Biological Laboratories, Rutgers University, Piscataway, NJ, 08854, USA
| | - Dipa Bhaumik
- The Buck Institute for Research On Aging, Novato, CA, 94945, USA
| | - Michelle K Chen
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR, 97403, USA
| | - Girish Harinath
- Department of Molecular Biology and Biochemistry, Nelson Biological Laboratories, Rutgers University, Piscataway, NJ, 08854, USA
| | - Manish Chamoli
- The Buck Institute for Research On Aging, Novato, CA, 94945, USA
| | - Rose P Quinn
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR, 97403, USA
| | - Ron Falkowski
- Department of Molecular Biology and Biochemistry, Nelson Biological Laboratories, Rutgers University, Piscataway, NJ, 08854, USA
| | - Daniel Edgar
- The Buck Institute for Research On Aging, Novato, CA, 94945, USA
| | - Madeline O Schmidt
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR, 97403, USA
| | - Mark Lucanic
- The Buck Institute for Research On Aging, Novato, CA, 94945, USA
| | - Max Guo
- Division of Aging Biology, National Institute On Aging, Bethesda, MD, 20892-9205, USA
| | - Monica Driscoll
- Department of Molecular Biology and Biochemistry, Nelson Biological Laboratories, Rutgers University, Piscataway, NJ, 08854, USA.
| | - Gordon J Lithgow
- The Buck Institute for Research On Aging, Novato, CA, 94945, USA.
| | - Patrick C Phillips
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR, 97403, USA.
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2
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Isola JVV, Ko S, Ocañas SR, Stout MB. Role of Estrogen Receptor α in Aging and Chronic Disease. Adv Geriatr Med Res 2023; 5:e230005. [PMID: 37425648 PMCID: PMC10327608 DOI: 10.20900/agmr20230005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Estrogen receptor alpha (ERα) plays a crucial role in reproductive function in both sexes. It also mediates cellular responses to estrogens in multiple nonreproductive organ systems, many of which regulate systemic metabolic homeostasis and inflammatory processes in mammals. The loss of estrogens and/or ERα agonism during aging is associated with the emergence of several comorbid conditions, particularly in females undergoing the menopausal transition. Emerging data also suggests that male mammals likely benefit from ERα agonism if done in a way that circumvents feminizing characteristics. This has led us, and others, to speculate that tissue-specific ERα agonism may hold therapeutic potential for curtailing aging and chronic disease burden in males and females that are at high-risk of cancer and/or cardiovascular events with traditional estrogen replacement therapies. In this mini-review, we emphasize the role of ERα in the brain and liver, summarizing recent evidence that indicates these two organs systems mediate the beneficial effects of estrogens on metabolism and inflammation during aging. We also discuss how 17α-estradiol administration elicits health benefits in an ERα-dependent manner, which provides proof-of-concept that ERα may be a druggable target for attenuating aging and age-related disease burden.
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Affiliation(s)
- José V. V. Isola
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Sunghwan Ko
- Genes & Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Sarah R. Ocañas
- Genes & Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
- Oklahoma City Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
| | - Michael B. Stout
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
- Oklahoma City Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
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3
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Datta G, Miller NM, Chen X. 17⍺-Estradiol Protects against HIV-1 Tat-Induced Endolysosome Dysfunction and Dendritic Impairments in Neurons. Cells 2023; 12:cells12050813. [PMID: 36899948 PMCID: PMC10000619 DOI: 10.3390/cells12050813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/03/2023] [Accepted: 03/04/2023] [Indexed: 03/08/2023] Open
Abstract
HIV-1 Tat continues to play an important role in the development of HIV-associated neurocognitive disorders (HAND), which persist in 15-55% of people living with HIV even with virological control. In the brain, Tat is present on neurons, where Tat exerts direct neuronal damaging effects by, at least in part, disrupting endolysosome functions, a pathological feature present in HAND. In this study, we determined the protective effects of 17α-estradiol (17αE2), the predominant form of estrogen in the brain, against Tat-induced endolysosome dysfunction and dendritic impairment in primary cultured hippocampal neurons. We demonstrated that pre-treatment with 17αE2 protected against Tat-induced endolysosome dysfunction and reduction in dendritic spine density. Estrogen receptor alpha (ERα) knockdown impairs the ability of 17αE2 to protect against Tat-induced endolysosome dysfunction and reduction in dendritic spine density. Furthermore, over-expressing an ERα mutant that fails to localize on endolysosomes impairs 17αE2's protective effects against Tat-induced endolysosome dysfunction and reduction in dendritic spine density. Our findings demonstrate that 17αE2 protects against Tat-induced neuronal injury via a novel ERα-mediated and endolysosome-dependent pathway, and such a finding might lead to the development of novel adjunct therapeutics against HAND.
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Shen Z, Hinson A, Miller RA, Garcia GG. Cap-independent translation: A shared mechanism for lifespan extension by rapamycin, acarbose, and 17α-estradiol. Aging Cell 2021; 20:e13345. [PMID: 33742521 PMCID: PMC8135077 DOI: 10.1111/acel.13345] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 02/10/2021] [Accepted: 02/21/2021] [Indexed: 01/24/2023] Open
Abstract
We hypothesized that rapamycin (Rapa), acarbose (ACA), which both increase mouse lifespan, and 17α-estradiol, which increases lifespan in males (17aE2) all share common intracellular signaling pathways with long-lived Snell dwarf, PAPPA-KO, and Ghr-/- mice. The long-lived mutant mice exhibit reduction in mTORC1 activity, declines in cap-dependent mRNA translation, and increases in cap-independent translation (CIT). Here, we report that Rapa and ACA prevent age-related declines in CIT target proteins in both sexes, while 17aE2 has the same effect only in males, suggesting increases in CIT. mTORC1 activity showed the reciprocal pattern, with age-related increases blocked by Rapa, ACA, and 17aE2 (in males only). METTL3, required for addition of 6-methyl-adenosine to mRNA and thus a trigger for CIT, also showed an age-dependent increase blunted by Rapa, ACA, and 17aE2 (in males). Diminution of mTORC1 activity and increases in CIT-dependent proteins may represent a shared pathway for both long-lived-mutant mice and drug-induced lifespan extension in mice.
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Affiliation(s)
- Ziqian Shen
- Department of Molecular, Cellular, and Developmental BiologyUniversity of Michigan College of Literature, Science, and the ArtsAnn ArborMichiganUSA
| | - Abby Hinson
- Department of Molecular, Cellular, and Developmental BiologyUniversity of Michigan College of Literature, Science, and the ArtsAnn ArborMichiganUSA
| | - Richard A. Miller
- Department of PathologyUniversity of Michigan School of MedicineAnn ArborMichiganUSA,University of Michigan Geriatrics CenterAnn ArborMichiganUSA
| | - Gonzalo G. Garcia
- Department of PathologyUniversity of Michigan School of MedicineAnn ArborMichiganUSA
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Mann SN, Hadad N, Nelson Holte M, Rothman AR, Sathiaseelan R, Ali Mondal S, Agbaga MP, Unnikrishnan A, Subramaniam M, Hawse J, Huffman DM, Freeman WM, Stout MB. Health benefits attributed to 17α-estradiol, a lifespan-extending compound, are mediated through estrogen receptor α. eLife 2020; 9:59616. [PMID: 33289482 PMCID: PMC7744101 DOI: 10.7554/elife.59616] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 12/07/2020] [Indexed: 02/06/2023] Open
Abstract
Metabolic dysfunction underlies several chronic diseases, many of which are exacerbated by obesity. Dietary interventions can reverse metabolic declines and slow aging, although compliance issues remain paramount. 17α-estradiol treatment improves metabolic parameters and slows aging in male mice. The mechanisms by which 17α-estradiol elicits these benefits remain unresolved. Herein, we show that 17α-estradiol elicits similar genomic binding and transcriptional activation through estrogen receptor α (ERα) to that of 17β-estradiol. In addition, we show that the ablation of ERα completely attenuates the beneficial metabolic effects of 17α-E2 in male mice. Our findings suggest that 17α-E2 may act through the liver and hypothalamus to improve metabolic parameters in male mice. Lastly, we also determined that 17α-E2 improves metabolic parameters in male rats, thereby proving that the beneficial effects of 17α-E2 are not limited to mice. Collectively, these studies suggest ERα may be a drug target for mitigating chronic diseases in male mammals.
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Affiliation(s)
- Shivani N Mann
- Department of Nutritional Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United States.,Oklahoma Center for Geroscience, University of Oklahoma Health Sciences Center, Oklahoma City, United States.,Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, United States
| | - Niran Hadad
- The Jackson Laboratory, Bar Harbor, United States
| | - Molly Nelson Holte
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, United States
| | - Alicia R Rothman
- Department of Nutritional Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United States
| | - Roshini Sathiaseelan
- Department of Nutritional Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United States
| | - Samim Ali Mondal
- Department of Nutritional Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United States
| | - Martin-Paul Agbaga
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, United States.,Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, United States.,Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, United States
| | - Archana Unnikrishnan
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, United States.,Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, United States
| | | | - John Hawse
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, United States
| | - Derek M Huffman
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, United States
| | - Willard M Freeman
- Oklahoma Center for Geroscience, University of Oklahoma Health Sciences Center, Oklahoma City, United States.,Genes & Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, United States.,Oklahoma City Veterans Affairs Medical Center, Oklahoma City, United States
| | - Michael B Stout
- Department of Nutritional Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United States.,Oklahoma Center for Geroscience, University of Oklahoma Health Sciences Center, Oklahoma City, United States.,Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, United States
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6
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Steyn FJ, Ngo ST, Chen VP, Bailey-Downs LC, Xie TY, Ghadami M, Brimijoin S, Freeman WM, Rubinstein M, Low MJ, Stout MB. 17α-estradiol acts through hypothalamic pro-opiomelanocortin expressing neurons to reduce feeding behavior. Aging Cell 2018; 17. [PMID: 29168299 PMCID: PMC5770854 DOI: 10.1111/acel.12703] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2017] [Indexed: 11/28/2022] Open
Abstract
Weight loss is an effective intervention for diminishing disease burden in obese older adults. Pharmacological interventions that reduce food intake and thereby promote weight loss may offer effective strategies to reduce age‐related disease. We previously reported that 17α‐estradiol (17α‐E2) administration elicits beneficial effects on metabolism and inflammation in old male mice. These observations were associated with reduced calorie intake. Here, we demonstrate that 17α‐E2 acts through pro‐opiomelanocortin (Pomc) expression in the arcuate nucleus (ARC) to reduce food intake and body mass in mouse models of obesity. These results confirm that 17α‐E2 modulates appetite through selective interactions within hypothalamic anorexigenic pathways. Interestingly, some peripheral markers of metabolic homeostasis were also improved in animals with near complete loss of ARC Pomc transcription. This suggests that 17α‐E2 might have central and peripheral actions that can beneficially affect metabolism cooperatively or independently.
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Affiliation(s)
- Frederik J. Steyn
- University of Queensland Centre for Clinical Research; Faculty of Medicine Brisbane Qld Australia
- Department of Neurology; Royal Brisbane & Women's Hospital; Brisbane Qld Australia
- Wesley Medical Research; Auchenflower Qld Australia
| | - Shyuan T. Ngo
- University of Queensland Centre for Clinical Research; Faculty of Medicine Brisbane Qld Australia
- Department of Neurology; Royal Brisbane & Women's Hospital; Brisbane Qld Australia
- Wesley Medical Research; Auchenflower Qld Australia
- Australian Institute for Bioengineering and Nanotechnology; University of Queensland; Brisbane Qld Australia
- Queensland Brain Institute; University of Queensland; Brisbane Qld Australia
| | - Vicky Ping Chen
- Robert and Arlene Kogod Center on Aging; Mayo Clinic; Rochester MN USA
| | - Lora C. Bailey-Downs
- Department of Nutritional Sciences; University of Oklahoma Health Sciences Center; Oklahoma City OK USA
| | - Teresa Y. Xie
- School of Biomedical Sciences; The University of Queensland; Brisbane Qld Australia
| | - Martin Ghadami
- School of Biomedical Sciences; The University of Queensland; Brisbane Qld Australia
| | - Stephen Brimijoin
- Robert and Arlene Kogod Center on Aging; Mayo Clinic; Rochester MN USA
| | - Willard M. Freeman
- Department of Physiology; University of Oklahoma Health Sciences Center; Oklahoma City OK USA
- Reynolds Oklahoma Center on Aging; University of Oklahoma Health Sciences Center; Oklahoma City OK USA
- Harold Hamm Diabetes Center; University of Oklahoma Health Sciences Center; Oklahoma City OK USA
| | - Marcelo Rubinstein
- Instituto de Investigaciones en Ingeniería Genética y Biología Molecular; Consejo Nacional de Investigaciones Científicas y Técnicas; Buenos Aires Argentina
- Facultad de Ciencias Exactas y Naturales; Universidad de Buenos Aires; Buenos Aires Argentina
- Department of Molecular and Integrative Physiology; University of Michigan Medical School; Ann Arbor MI USA
| | - Malcolm J. Low
- Department of Molecular and Integrative Physiology; University of Michigan Medical School; Ann Arbor MI USA
| | - Michael B. Stout
- Department of Nutritional Sciences; University of Oklahoma Health Sciences Center; Oklahoma City OK USA
- Reynolds Oklahoma Center on Aging; University of Oklahoma Health Sciences Center; Oklahoma City OK USA
- Harold Hamm Diabetes Center; University of Oklahoma Health Sciences Center; Oklahoma City OK USA
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7
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Kim EJ, Lee D, Chung BC, Pyo H, Lee J. Association between urinary levels of bisphenol-A and estrogen metabolism in Korean adults. Sci Total Environ 2014; 470-471:1401-7. [PMID: 23954212 DOI: 10.1016/j.scitotenv.2013.07.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/21/2013] [Accepted: 07/12/2013] [Indexed: 05/26/2023]
Abstract
Bisphenol-A (BPA) possesses estrogenic properties both in vitro and in vivo as an endocrine disrupting chemical. Humans experience a long-term and cumulative exposure to BPA. BPA was detectable in 97.3% of 1904 urine specimens from Korean adults. We investigated urinary estrogen concentrations in subjects with low and high BPA concentrations and its possible association with estrogen metabolism. Urine samples were collected from a high BPA concentration group (BPA-H; n=100, 11.05 ± 20.47 μg/g creatinine) and a low BPA concentration group (BPA-L; n=100, 0.70 ± 0.22 μg/g creatinine) from Korea Biomonitoring Program of Hazardous Materials Survey 2009-2010. Urinary estrogens were enzymatically hydrolyzed, extracted, and then derivatized for quantitative analysis by gas chromatography-mass spectrometry. Estrogen levels were higher in the BPA-H group than in the BPA-L group. Concentrations of estrone, 17β-estradiol, and their hydroxylated metabolites in both men and women were significantly higher in the BPA-H group than in the BPA-L group (p<0.04). Furthermore, in the BPA-H group, estrogen metabolism to 4-hydroxy-estrone and 4-hydroxy-17β-estradiol was more active than that to 2-hydroxy-estrone and 2-hydroxy-17β-estradiol. Although single measurement and/or single spot urine samples limit the measurement of long-term exposure to BPA, we found significant differences of estrogen metabolism in the BPA-H and the BPA-L groups. The increase of hydroxyestrogens, especially 4-hydroxyestrogens, can be an important factor resulting negative effects of prolonged exposure to BPA.
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Affiliation(s)
- Eun Jee Kim
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea; Department of Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Dongho Lee
- Department of Biotechnology, Korea University, Seoul 136-701, Republic of Korea
| | - Bong Chul Chung
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
| | - Heesoo Pyo
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
| | - Jeongae Lee
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea.
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8
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Kim JH, Lee SY, Lee HJ, Yoon NY, Lee WS. The Efficacy and Safety of 17α-Estradiol (Ell-Cranell® alpha 0.025%) Solution on Female Pattern Hair Loss: Single Center, Open-Label, Non-Comparative, Phase IV Study. Ann Dermatol 2012; 24:295-305. [PMID: 22879713 PMCID: PMC3412238 DOI: 10.5021/ad.2012.24.3.295] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 08/17/2011] [Accepted: 08/30/2011] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND There are several commercially available agents to treat female pattern hair loss (FPHL), including minoxidil solution, anti-androgen agents and mineral supplements. However, these treatments are not always satisfactory. We report the results of a clinical trial of 17α-estradiol (Ell-Cranell® alpha 0.025%) solution to Korean female patients with FPHL. OBJECTIVE This study was designed to examine the efficacy and safety of Ell-Cranell® alpha 0.025% solution in Korean female patients with FPHL. METHODS A total of 53 women, 18 to 55 years old, applied topical Ell-Cranell® alpha 0.025% solution once daily for 8 months. Efficacy was evaluated by the change of hair counts and diameter, subjective assessment, and photographic assessment by investigators. RESULTS Hair counts and diameter from baseline to 4 and 8 months after treatment increased in treated patients and these changes were statistically significant (p<0.0001). 17α-estradiol (Ell-Cranell® alpha 0.025%) solution showed significant improvement by subjective self-assessment and by investigator photographic assessment. Ell-Cranell® alpha 0.025% solution was well tolerated over 8-months period. CONCLUSION This study showed that Ell-Cranell® alpha 0.025% solution is a safe and effective agent for Korean women with FPHL.
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Affiliation(s)
- Jae-Hong Kim
- Department of Dermatology and Institute of Hair and Cosmetic Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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9
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Abstract
The gonadal steroid, 17beta-estradiol (E(2)), acts as a protective hormone preventing beta-cell apoptosis in vivo in mice of both sexes and in cultured mouse and human islets. E(2) signals via the classical estrogen receptor (ER)alpha and ERbeta, an extranuclear form of ERalpha and the G protein-coupled estrogen receptor (GPER). In a recent study, we determined the contribution of these receptors to beta-cell survival, using a combination of genetic and pharmacological tools in mice and cultured mouse and human islets. We showed that E(2) favors islet survival by preventing apoptosis via ERalpha and ERbeta through ERE-independent, extra-nuclear mechanisms and with a predominant ERalpha effect. We also revealed that E(2) prevents apoptosis via GPER-dependent mechanisms. Here, we show that E(2) prevents apoptosis independently of gene transcription or de novo protein synthesis suggesting that E(2) cytoprotection happens independently of nuclear events. Furthermore, we report that E(2) islet cytoprotection can be mimicked by the nonfeminizing E(2) stereoisomer, 17alpha-estradiol, suggesting that it is partially non-estrogen receptor mediated. These studies identify novel estrogen pathways and targets to protect islet survival.
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Affiliation(s)
- Suhuan Liu
- Department of Medicine, Division of Endocrinology, Metabolism and Molecular Medicine, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
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10
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Qiao Y, Zhang ZK, Cai LQ, Tan C, Imperato-McGinley JL, Zhu YS. 17alpha-estradiol inhibits LAPC-4 prostatic tumor cell proliferation in cell cultures and tumor growth in xenograft animals. Prostate 2007; 67:1719-28. [PMID: 17879940 PMCID: PMC2862353 DOI: 10.1002/pros.20656] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Blockade of androgen activity is a major effective therapy for advanced prostate cancer. Estrogen analogs have been used for prostate cancer therapy for years presumably by inhibiting testosterone biosyntheses, but with considerable adverse events due to their classic estrogenic activity. With the discovery of the estrogen receptor (ER) beta and its presence in prostate tumor cells, evaluation of estrogen analogs with less classic estrogenic activity in prostate cancer therapy is emerging. METHODS The effects of 17alpha-estradiol (alphaE2), a stereo-isomer of 17beta-estradiol (betaE2), on dihydrotestosterone (DHT)-induced cell growth and gene expressions were examined in androgen-dependent LAPC-4 prostatic tumor cells and in LAPC-4 xenograft animals, and compared to those of betaE2. RESULTS Both alphaE2 and betaE2 attenuated DHT induction of PSA gene expression, cell proliferation, and cell growth in cultured LAPC-4 cells. The inhibition of cell proliferation was associated with a blockade of DHT-induced cyclin A and cyclin D1 expression by alphaE2 and betaE2. In LAPC-4 xenograft mice, alphaE2 significantly inhibited tumor growth without altering the plasma testosterone level, while betaE2 failed to inhibit tumor growth even though it significantly inhibited PSA gene expression. CONCLUSION alphaE2 is an effective agent for inhibition of DHT-induced PSA, cyclin A, cyclin D1 gene expression, and cell proliferation in LAPC-4 cells, and tumor growth in LAPC-4 xenograft mice.
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Affiliation(s)
- Yaming Qiao
- Department of Medicine/Endocrinology, Weill Medical College of Cornell University, New York, New York
| | - Zhi-Kai Zhang
- Department of Medicine/Endocrinology, Weill Medical College of Cornell University, New York, New York
| | - Li-Qun Cai
- Department of Medicine/Endocrinology, Weill Medical College of Cornell University, New York, New York
| | - Chen Tan
- Department of Medicine/Endocrinology, Weill Medical College of Cornell University, New York, New York
| | | | - Yuan-Shan Zhu
- Department of Medicine/Endocrinology, Weill Medical College of Cornell University, New York, New York
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11
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Toran-Allerand CD, Guan X, MacLusky NJ, Horvath TL, Diano S, Singh M, Connolly ES, Nethrapalli IS, Tinnikov AA. ER-X: a novel, plasma membrane-associated, putative estrogen receptor that is regulated during development and after ischemic brain injury. J Neurosci 2002; 22:8391-401. [PMID: 12351713 PMCID: PMC6757764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Abstract
We showed previously in neocortical explants, derived from developing wild-type and estrogen receptor (ER)-alpha gene-disrupted (ERKO) mice, that both 17alpha- and 17beta-estradiol elicit the rapid and sustained phosphorylation and activation of the mitogen-activated protein kinase (MAPK) isoforms, the extracellular signal-regulated kinases ERK1 and ERK2. We proposed that the ER mediating activation of the MAPK cascade, a signaling pathway important for cell division, neuronal differentiation, and neuronal survival in the developing brain, is neither ER-alpha nor ER-beta but a novel, plasma membrane-associated, putative ER with unique properties. The data presented here provide further evidence that points strongly to the existence of a high-affinity, saturable, 3H-estradiol binding site (K(d), approximately 1.6 nm) in the plasma membrane. Unlike neocortical ER-alpha, which is intranuclear and developmentally regulated, and neocortical ER-beta, which is intranuclear and expressed throughout life, this functional, plasma membrane-associated ER, which we have designated "ER-X," is enriched in caveolar-like microdomains (CLMs) of postnatal, but not adult, wild-type and ERKO neocortical and uterine plasma membranes. We show further that ER-X is functionally distinct from ER-alpha and ER-beta, and that, like ER-alpha, it is re-expressed in the adult brain, after ischemic stroke injury. We also confirmed in a cell-free system that ER-alpha is an inhibitory regulator of ERK activation, as we showed previously in neocortical cultures. Association with CLM complexes positions ER-X uniquely to interact rapidly with kinases of the MAPK cascade and other signaling pathways, providing a novel mechanism for mediation of the influences of estrogen on neuronal differentiation, survival, and plasticity.
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MESH Headings
- Animals
- Binding, Competitive/drug effects
- Blotting, Western
- Brain Ischemia/physiopathology
- Caveolae/metabolism
- Cell Membrane/chemistry
- Cell Membrane/metabolism
- Cell-Free System
- Cells, Cultured
- Cholesterol/metabolism
- Enzyme Activation/drug effects
- Estradiol/pharmacokinetics
- Estradiol/pharmacology
- Gene Expression Regulation, Developmental
- Ionophores/pharmacology
- Mice
- Mice, Knockout
- Mitogen-Activated Protein Kinase 1/metabolism
- Mitogen-Activated Protein Kinase 3
- Mitogen-Activated Protein Kinases/metabolism
- Neocortex/chemistry
- Neocortex/cytology
- Neocortex/metabolism
- Neurons/cytology
- Neurons/metabolism
- RNA, Messenger/analysis
- RNA, Messenger/biosynthesis
- Receptors, Estrogen/deficiency
- Receptors, Estrogen/genetics
- Receptors, Estrogen/metabolism
- Signal Transduction/physiology
- Subcellular Fractions/chemistry
- Substrate Specificity
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Affiliation(s)
- C Dominique Toran-Allerand
- Department of Anatomy and Cell Biology, Columbia University College of Physicians and Surgeons, New York, New York 10032, USA.
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Green PS, Bishop J, Simpkins JW. 17 alpha-estradiol exerts neuroprotective effects on SK-N-SH cells. J Neurosci 1997; 17:511-5. [PMID: 8987774 PMCID: PMC6573237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Estradiol (E2) has been shown to exert organizational, neurotrophic, and neuroprotective effects in the CNS. The present study assessed the specificity of the neuroprotective effects of estradiol for the potent 17 beta-isomer. SK-N-SH cells from a human neuroblastoma cell line, which we have shown to be estrogen-responsive, were cultured at low or high plating density. Then cells were exposed to 17 beta-E2 (0.2 or 2 nM), 17 alpha-E2 (0.2 or 2 nM), or cholesterol, testosterone, dihydrotestosterone, progesterone, or corticosterone (all at 2 nM). Cultures were insulted by serum deprivation, which caused a profound loss of cells. At 1 or 2 d of serum deprivation and steroid hormone replacement, the protection afforded cells by the steroid addition was assessed. Serum deprivation killed approximately 90% of cells cultured at both low and high plating density. Both 17 alpha- and 17 beta-E2 provided protection of SK-N-SH cells at either plating density. Further, a 10-fold molar excess of tamoxifen antagonized only approximately one-third of the neuroprotective effects of either isomer of estradiol, and a 100-fold excess of tamoxifen had no additional effect on the neuroprotection by 17 beta-E2. By contrast, none of the other steroids tested protected cells from the insult of serum deprivation. These results indicate that the neuroprotective effects of estrogens are not attributable to the general steroid structure, and the majority of the neuroprotection may not be mediated via a tamoxifenantagonized receptor mechanism.
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Affiliation(s)
- P S Green
- Center for the Neurobiology of Aging, University of Florida, Gainesville 32610, USA
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