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Pemp D, Esch HL, Hauptstein R, Möller FJ, Zierau O, Bosland MC, Geppert LN, Kleider C, Schlereth K, Vollmer G, Lehmann L. Novel insight in estrogen homeostasis and bioactivity in the ACI rat model of estrogen-induced mammary gland carcinogenesis. Arch Toxicol 2019; 93:1979-1992. [PMID: 31119341 DOI: 10.1007/s00204-019-02483-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 05/15/2019] [Indexed: 01/06/2023]
Abstract
Despite being widely used to investigate 17β-estradiol (E2)-induced mammary gland (MG) carcinogenesis and prevention thereof, estrogen homeostasis and its significance in the female August Copenhagen Irish (ACI) rat model is unknown. Thus, levels of 12 estrogens including metabolites and conjugates were determined mass spectrometrically in 38 plasmas and 52 tissues exhibiting phenotypes ranging from normal to palpable tumor derived from a representative ACI study using two different diets. In tissues, 40 transcripts encoding proteins involved in estrogen (biotrans)formation, ESR1-mediated signaling, proliferation and oxidative stress were analyzed (TaqMan PCR). Influence of histo(patho)logic phenotypes and diet on estrogen and transcript levels was analyzed by 2-way ANOVA and explanatory variables influencing levels and bioactivity of estrogens in tissues were identified by multiple linear regression models. Estrogen profiles in tissue and plasma and the influence of Hsd17b1 levels on intra-tissue levels of E2 and E1 conclusively indicated intra-mammary formation of E2 in ACI tumors by HSD17B1-mediated conversion of E1. Proliferation in ACI tumors was influenced by Egfr, Igf1r, Hgf and Met levels. 2-MeO-E1, the only oxidative estrogen metabolite detected above 28-42 fmol/g, was predominately observed in hyperplastic tissues and intra-tissue conversion of E1 seemed to contribute to its levels. The association of the occurrence of 2-MeO-E1 with higher levels of oxidative stress observed in hyperplastic and tumor tissues remained equivocal. Thus, the present study provides mechanistic explanation for previous and future results observed in the ACI model.
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Affiliation(s)
- Daniela Pemp
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Harald L Esch
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - René Hauptstein
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Frank J Möller
- Chair of Molecular Cell Physiology and Endocrinology, University of Dresden, Zellescher Weg 20b, 01217, Dresden, Germany
| | - Oliver Zierau
- Chair of Molecular Cell Physiology and Endocrinology, University of Dresden, Zellescher Weg 20b, 01217, Dresden, Germany
| | - Maarten C Bosland
- Department of Pathology, College of Medicine, University of Illinois at Chicago, 840 S. Wood St., Suite 130 CSN, Chicago, IL, 60612, USA
| | - Leo N Geppert
- Chair of Mathematical Statistics with Applications in Biometrics, TU Dortmund University, Vogelpothsweg 87, 44221, Dortmund, Germany
| | - Carolin Kleider
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Katharina Schlereth
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Günter Vollmer
- Chair of Molecular Cell Physiology and Endocrinology, University of Dresden, Zellescher Weg 20b, 01217, Dresden, Germany
| | - Leane Lehmann
- Institute of Pharmacy and Food Chemistry, University of Würzburg, Am Hubland, 97074, Würzburg, Germany.
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Medroxyprogesterone effects on colony growth, autophagy and mitochondria of C6 glioma cells are augmented with tibolone and temozolomide. Clin Neurol Neurosurg 2019; 177:77-85. [DOI: 10.1016/j.clineuro.2018.12.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 12/07/2018] [Accepted: 12/29/2018] [Indexed: 02/06/2023]
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Giatti S, Garcia-Segura LM, Barreto GE, Melcangi RC. Neuroactive steroids, neurosteroidogenesis and sex. Prog Neurobiol 2018; 176:1-17. [PMID: 29981391 DOI: 10.1016/j.pneurobio.2018.06.007] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 05/25/2018] [Accepted: 06/30/2018] [Indexed: 12/12/2022]
Abstract
The nervous system is a target and a source of steroids. Neuroactive steroids are steroids that target neurons and glial cells. They include hormonal steroids originated in the peripheral glands, steroids locally synthesized by the neurons and glial cells (neurosteroids) and synthetic steroids, some of them used in clinical practice. Here we review the mechanisms of synthesis, metabolism and action of neuroactive steroids, including the role of epigenetic modifications and the mitochondria in their sex specific actions. We examine sex differences in neuroactive steroid levels under physiological conditions and their role in the establishment of sex dimorphic structures in the nervous system and sex differences in its function. In addition, particular attention is paid to neuroactive steroids under pathological conditions, analyzing how pathology alters their levels and their role as neuroprotective factors, considering the influence of sex in both cases.
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Affiliation(s)
- Silvia Giatti
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy
| | - Luis M Garcia-Segura
- Instituto Cajal, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain; Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto de Salud Carlos III, Madrid, Spain
| | - George E Barreto
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Roberto C Melcangi
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Milano, Italy.
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de Santana e Silva Cardoso FF, César IC, Mundim IM, de Souza Teixeira L, da Silva EP, Bonfim RR, Gomes SA, Ferreira DP, Lopes ARB, Pascoal HD, de Souza WC, Pianetti GA. Determination of 3- α-hydroxytibolone in human plasma by LC-MS/MS: application for a pharmacokinetic study after administration of a tibolone formulation. Biomed Chromatogr 2013; 27:1457-62. [DOI: 10.1002/bmc.2943] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 04/24/2013] [Indexed: 11/10/2022]
Affiliation(s)
| | | | - Iram Moreira Mundim
- Instituto de Ciências Farmacêuticas; Alameda Coronel Eugênio Jardim 53; 74175-100; Goiânia; GO; Brazil
| | | | - Enikson Pontes da Silva
- Instituto de Ciências Farmacêuticas; Alameda Coronel Eugênio Jardim 53; 74175-100; Goiânia; GO; Brazil
| | - Ricardo Rodrigues Bonfim
- Instituto de Ciências Farmacêuticas; Alameda Coronel Eugênio Jardim 53; 74175-100; Goiânia; GO; Brazil
| | - Sandro Antônio Gomes
- Instituto de Ciências Farmacêuticas; Alameda Coronel Eugênio Jardim 53; 74175-100; Goiânia; GO; Brazil
| | - Denys Pires Ferreira
- Instituto de Ciências Farmacêuticas; Alameda Coronel Eugênio Jardim 53; 74175-100; Goiânia; GO; Brazil
| | | | - Helifas Duarte Pascoal
- Instituto de Ciências Farmacêuticas; Alameda Coronel Eugênio Jardim 53; 74175-100; Goiânia; GO; Brazil
| | - Weidson Carlo de Souza
- Instituto de Ciências Farmacêuticas; Alameda Coronel Eugênio Jardim 53; 74175-100; Goiânia; GO; Brazil
| | - Gerson Antônio Pianetti
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia; Universidade Federal de Minas Gerais; Av. Pres. Antônio Carlos 6627; 31270-901; Belo Horizonte; MG; Brazil
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Bolca S, Li J, Nikolic D, Roche N, Blondeel P, Possemiers S, De Keukeleire D, Bracke M, Heyerick A, van Breemen RB, Depypere H. Disposition of hop prenylflavonoids in human breast tissue. Mol Nutr Food Res 2010; 54 Suppl 2:S284-94. [PMID: 20486208 DOI: 10.1002/mnfr.200900519] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Hop-derived products may contain xanthohumol (XN), isoxanthohumol (IX), and the potent phytoestrogen 8-prenylnaringenin (8-PN). To evaluate the potential health effects of these prenylflavonoids on breast tissue, their concentration, nature of metabolites, and biodistribution were assessed and compared with 17beta-estradiol (E(2)) exposure. In this dietary intervention study, women were randomly allocated to hop (n=11; 2.04 mg XN, 1.20 mg IX, and 0.1 mg 8-PN per supplement) or control (n=10). After a run-in of >or=4 days, three supplements were taken daily for 5 days preceding an aesthetic breast reduction. Blood and breast biopsies were analyzed using HPLC-ESI-MS/MS. Upon hop administration, XN and IX concentrations ranged between 0.72 and 17.65 nmol/L and 3.30 and 31.50 nmol/L, and between 0.26 and 5.14 pmol/g and 1.16 and 83.67 pmol/g in hydrolyzed serum and breast tissue, respectively. 8-PN however, was only detected in samples of moderate and strong 8-PN producers (0.43-7.06 nmol/L and 0.78-4.83 pmol/g). Phase I metabolism appeared to be minor (approximately 10%), whereas extensive glucuronidation was observed (> 90%). Total prenylflavonoids showed a breast adipose/glandular tissue distribution of 38/62 and their derived E(2)-equivalents were negligible compared with E(2) in adipose (384.6+/-118.8 fmol/g, p=0.009) and glandular (241.6+/-93.1 fmol/g, p<0.001) tissue, respectively. Consequently, low doses of prenylflavonoids are unlikely to elicit estrogenic responses in breast tissue.
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Affiliation(s)
- Selin Bolca
- Laboratory of Microbial Ecology and Technology (LabMET), Faculty of Bioscience Engineering, Ghent University-UGent, Belgium
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Current World Literature. Curr Opin Allergy Clin Immunol 2009; 9:386-90. [DOI: 10.1097/aci.0b013e32832eb836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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