Estrogenic Compounds: Chemical Characteristics, Detection Methods, Biological and Environmental Effects
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Cryptorchidism and Endocrine Disrupting Chemicals ⇑ Helena E
Molecular and Cellular Endocrinology 355 (2012) 208–220 Contents lists available at SciVerse ScienceDirect Molecular and Cellular Endocrinology journal homepage: www.elsevier.com/locate/mce Review Cryptorchidism and endocrine disrupting chemicals ⇑ Helena E. Virtanen , Annika Adamsson Department of Physiology, University of Turku, Finland article info abstract Article history: Prospective clinical studies have suggested that the rate of congenital cryptorchidism has increased since Available online 25 November 2011 the 1950s. It has been hypothesized that this may be related to environmental factors. Testicular descent occurs in two phases controlled by Leydig cell-derived hormones insulin-like peptide 3 (INSL3) and tes- Keywords: tosterone. Disorders in fetal androgen production/action or suppression of Insl3 are mechanisms causing Cryptorchidism cryptorchidism in rodents. In humans, prenatal exposure to potent estrogen diethylstilbestrol (DES) has Testis been associated with increased risk of cryptorchidism. In addition, epidemiological studies have sug- Endocrine disrupting chemical gested that exposure to pesticides may also be associated with cryptorchidism. Some case–control stud- ies analyzing environmental chemical levels in maternal breast milk samples have reported associations between cryptorchidism and chemical levels. Furthermore, it has been suggested that exposure levels of some chemicals may be associated with infant reproductive hormone levels. Ó 2011 Elsevier Ireland Ltd. All rights reserved. Contents 1. Background. -
Critical Role of Oxidative Stress in Estrogen-Induced Carcinogenesis
Critical role of oxidative stress in estrogen-induced carcinogenesis Hari K. Bhat*†, Gloria Calaf‡, Tom K. Hei*‡, Theresa Loya§, and Jaydutt V. Vadgama¶ *Department of Environmental Health Sciences, Mailman School of Public Health, 60 Haven Avenue-B1, Columbia University, New York, NY 10032; ‡Center for Radiological Research, Columbia University, New York, NY 10032; and Departments of §Pathology and ¶Medicine, Charles Drew University, Los Angeles, CA 90059 Communicated by Donald C. Malins, Pacific Northwest Research Institute, Seattle, WA, December 27, 2002 (received for review August 22, 2002) Mechanisms of estrogen-induced tumorigenesis in the target quinones generates oxidative stress and potentially harmful free organ are not well understood. It has been suggested that oxida- radicals that are postulated to be required for the carcinogenic tive stress resulting from metabolic activation of carcinogenic process, and analogous to the metabolic activation of hydrocar- estrogens plays a critical role in estrogen-induced carcinogenesis. bons and other nonsteroidal estrogen carcinogens (9, 19–22). We We tested this hypothesis by using an estrogen-induced hamster have investigated the role of oxidative stress in estrogen carci- renal tumor model, a well established animal model of hormonal nogenesis by using a well established hamster renal tumor model carcinogenesis. Hamsters were implanted with 17-estradiol (E2), that shares several characteristics with human breast and uterine 17␣-estradiol (␣E2), 17␣-ethinylestradiol (␣EE), menadione, a com- cancers, pointing to a common mechanistic origin (6, 9, 23). bination of ␣E2 and ␣EE, or a combination of ␣EE and menadione Different estrogens used in the present study differ in their for 7 months. -
UFC PROHIBITED LIST Effective June 1, 2021 the UFC PROHIBITED LIST
UFC PROHIBITED LIST Effective June 1, 2021 THE UFC PROHIBITED LIST UFC PROHIBITED LIST Effective June 1, 2021 PART 1. Except as provided otherwise in PART 2 below, the UFC Prohibited List shall incorporate the most current Prohibited List published by WADA, as well as any WADA Technical Documents establishing decision limits or reporting levels, and, unless otherwise modified by the UFC Prohibited List or the UFC Anti-Doping Policy, Prohibited Substances, Prohibited Methods, Specified or Non-Specified Substances and Specified or Non-Specified Methods shall be as identified as such on the WADA Prohibited List or WADA Technical Documents. PART 2. Notwithstanding the WADA Prohibited List and any otherwise applicable WADA Technical Documents, the following modifications shall be in full force and effect: 1. Decision Concentration Levels. Adverse Analytical Findings reported at a concentration below the following Decision Concentration Levels shall be managed by USADA as Atypical Findings. • Cannabinoids: natural or synthetic delta-9-tetrahydrocannabinol (THC) or Cannabimimetics (e.g., “Spice,” JWH-018, JWH-073, HU-210): any level • Clomiphene: 0.1 ng/mL1 • Dehydrochloromethyltestosterone (DHCMT) long-term metabolite (M3): 0.1 ng/mL • Selective Androgen Receptor Modulators (SARMs): 0.1 ng/mL2 • GW-1516 (GW-501516) metabolites: 0.1 ng/mL • Epitrenbolone (Trenbolone metabolite): 0.2 ng/mL 2. SARMs/GW-1516: Adverse Analytical Findings reported at a concentration at or above the applicable Decision Concentration Level but under 1 ng/mL shall be managed by USADA as Specified Substances. 3. Higenamine: Higenamine shall be a Prohibited Substance under the UFC Anti-Doping Policy only In-Competition (and not Out-of- Competition). -
Pp375-430-Annex 1.Qxd
ANNEX 1 CHEMICAL AND PHYSICAL DATA ON COMPOUNDS USED IN COMBINED ESTROGEN–PROGESTOGEN CONTRACEPTIVES AND HORMONAL MENOPAUSAL THERAPY Annex 1 describes the chemical and physical data, technical products, trends in produc- tion by region and uses of estrogens and progestogens in combined estrogen–progestogen contraceptives and hormonal menopausal therapy. Estrogens and progestogens are listed separately in alphabetical order. Trade names for these compounds alone and in combination are given in Annexes 2–4. Sales are listed according to the regions designated by WHO. These are: Africa: Algeria, Angola, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Cape Verde, Central African Republic, Chad, Comoros, Congo, Côte d'Ivoire, Democratic Republic of the Congo, Equatorial Guinea, Eritrea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Lesotho, Liberia, Madagascar, Malawi, Mali, Mauritania, Mauritius, Mozambique, Namibia, Niger, Nigeria, Rwanda, Sao Tome and Principe, Senegal, Seychelles, Sierra Leone, South Africa, Swaziland, Togo, Uganda, United Republic of Tanzania, Zambia and Zimbabwe America (North): Canada, Central America (Antigua and Barbuda, Bahamas, Barbados, Belize, Costa Rica, Cuba, Dominica, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Puerto Rico, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Suriname, Trinidad and Tobago), United States of America America (South): Argentina, Bolivia, Brazil, Chile, Colombia, Dominican Republic, Ecuador, Guyana, Paraguay, -
Estrogen Actions Throughout the Brain
Estrogen Actions Throughout the Brain BRUCE MCEWEN Harold and Margaret Milliken Hatch Laboratory of Neuroendocrinology, The Rockefeller University, New York, New York 10021 ABSTRACT Besides affecting the hypothalamus and other brain areas related to reproduction, ovarian steroids have widespread effects throughout the brain, on serotonin pathways, catecholaminergic neurons, and the basal forebrain cholinergic system as well as the hippocampal formation, a brain region involved in spatial and declarative memory. Thus, ovarian steroids have measurable effects on affective state as well as cognition, with implications for dementia. Two actions are discussed in this review; both appear to involve a combination of genomic and nongenomic actions of ovarian hormones. First, regulation of the serotonergic system appears to be linked to the presence of estrogen- and progestin-sensitive neurons in the midbrain raphe as well as possibly nongenomic actions in brain areas to which serotonin neurons project their axons. Second, ovarian hormones regulate synapse turnover in the CA1 region of the hippocampus during the 4- to 5-day estrous cycle of the female rat. Formation of new excitatory synapses is induced by estradiol and involves N-methyl-D-aspartate (NMDA) receptors, whereas downregulation of these synapses involves intracellular progestin receptors. A new, rapid method of radioimmunocytochemistry has made possible the demonstration of synapse formation by labeling and quantifying the specific synaptic and dendritic molecules involved. Although NMDA receptor activation is required for synapse formation, inhibitory interneurons may play a pivotal role as they express nuclear estrogen receptor-alpha (ER␣). It is also likely that estrogens may locally regulate events at the sites of synaptic contact in the excitatory pyramidal neurons where the synapses form. -
Interactions of Putative Estrogens with the Intracellular Receptor Complex in Mouse Leydig Cells: Relationship to Preneoplastic Hyperplasia R
[CANCER RESEARCH 48, 14-18, January 1, 1988) Interactions of Putative Estrogens with the Intracellular Receptor Complex in Mouse Leydig Cells: Relationship to Preneoplastic Hyperplasia R. Lloyd Juriansz,1 Robert A. Huseby, and R. Bruce Wilcox2 Department of Biochemistry, Loma Linda University, Loma Linda, California 92350 ABSTRACT (3), the initial spurt of DNA synthesis occurs independent of pituitary function (6). Actual tumor induction, however, results The interaction of 14 steroidal and nonsteroidal estrogen agonists and from action of unmetabolized estrogen directly upon the Leydig antagonists with the intracellular estrogen receptor system was examined cells (7). These cells in both a susceptible and a nonsusceptible in cell suspensions prepared from the testes of mice that develop malig strain of mouse contain an ER3 complex. The cells from the nant Leydig cell tumors after prolonged estrogen administration. The ability of these substances to stimulate DNA synthesis in short-term (3- two strains differ significantly in that nuclei from susceptible day) studies and to provoke Leydig cell hyperplasia with prolonged (3- animals bind more estrogen, and the proportion of the nuclear mo) administration was also measured. Our data were consistent with ER that remains fixed to the nuclear matrix in solutions of the proposal that, in Leydig cells, the carcinogenic effects of estrogens high salt concentration is greater in the tumor-susceptible ani are mediated through the intracellular receptor complex that results in a mals (8). Furthermore this fraction of the ER increases in localization of hormone bound to chromâtin and nuclear matrix. All tested compounds displaced 170-[3H]estradiol from the cytosolic amount per Leydig cell as estrogen treatment of susceptible mice continues over a 3-mo period and hyperplasia is initiated estrogen receptor, but to varying degrees; and there was no discernible (9). -
Identification and Confirmation of the Environmental Risks of Emerging Pollutants in Surface Waters and Sediments
Identification and confirmation of the environmental risks of emerging pollutants in surface waters and sediments Von der Fakultät für Mathematik, Informatik und Naturwissenschaften der RWTH Aachen University zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften genehmigte Dissertation Vorgelegt von Shangbo Zhou, Master of engineering aus Gansu, China Berichter: Univ.-Prof. Dr. rer. nat. Henner Hollert Univ.-Prof. Dr. rer. nat. Andreas Schäffer Tag der mündlichen Prüfung: 24.09.2019 Diese Dissertation ist auf den Internetseiten der Universitätsbibliothek online verfügbar. Your teacher can open the door but you must enter by yourself. – Chinese verb Abstract Although the occurrence, the fate and the toxicology of emerging pollutants in the aquatic environment have been widely studied, there is still a lack in the correlation of the levels of pollutants with the possible adverse effects in wildlife. The shortcomings of traditional methods for risk assessment have been observed, and the contributions of the identified compounds to the observed risks are rarely confirmed. Therefore, the main purpose of this thesis was to develop reasonable methods for risk identification of single compounds and mixtures, and to identify and confirm environmental risks caused by non-specific and mechanism-specific toxicity in aquatic systems. In this thesis, optimized methods for risk identification of single compounds and mixtures were developed. For screening-level risk assessment of single compounds, an optimized risk quotient that considers not only toxicological data but also the frequency with which the detected concentrations exceeded predicted no-effect concentrations was used to screen candidate priority pollutants in European surface waters. Results showed that 45 of the 477 analyzed compounds indicated potential risks for European surface waters. -
(12) United States Patent (10) Patent No.: US 7,723,320 B2 Bunschoten Et Al
US007723320B2 (12) United States Patent (10) Patent No.: US 7,723,320 B2 Bunschoten et al. (45) Date of Patent: May 25, 2010 (54) USE OF ESTROGEN COMPOUNDS TO DE 23,36434. A 4, 1975 INCREASE LIBDO IN WOMEN WO WO96 O3929 A 2, 1996 (75) Inventors: Evert Johannes Bunschoten, Heesch OTHER PUBLICATIONS (NL); Herman Jan Tijmen Coelingh Bennink, Driebergen (NL); Christian Holinka CF et al: “Comparison of Effects of Estetrol and Taxoxifen Franz Holinka, New York, NY (US) with Those of Estriol and Estradiol on the Immature Rat Uterus'; Biology of Reproduction; 1980; pp. 913-926; vol. 22, No. 4. (73) Assignee: Pantarhei Bioscience B.V., Al Zeist Holinka CF et al; "In-Vivo Effects of Estetrol on the Immature Rat (NL) Uterus'; Biology of Reproduction; 1979: pp. 242-246; vol. 20, No. 2. Albertazzi Paola et al.; "The Effect of Tibolone Versus Continuous Combined Norethisterone Acetate and Oestradiol on Memory, (*) Notice: Subject to any disclaimer, the term of this Libido and Mood of Postmenopausal Women: A pilot study': Data patent is extended or adjusted under 35 base Biosis "Online!; Oct. 31, 2000: pp. 223-229; vol. 36, No. 3; U.S.C. 154(b) by 1072 days. Biosciences Information Service.: Philadelphia, PA, US. Visser et al., “In vitro effects of estetrol on receptor binding, drug (21) Appl. No.: 10/478,264 targets and human liver cell metabolism.” Climacteric (2008) 11(1) Appx. II: 1-5. (22) PCT Filed: May 17, 2002 Visser et al., “First human exposure to exogenous single-dose oral estetrol in early postmenopausal women.” Climacteric (2008) 11(1): (86). -
Prohibited List
PROHIBITED LIST This List shall come into effect on 1 January 201X THE 201X PROHIBITED LIST Valid 1 January 201X In accordance with ARCI-011-015/ARCI-025-015 all substances in the categories below shall be strictly prohibited unless otherwise noted. Any reference to substances in this section does not alter the requirements for testing concentrations in race day samples. SUBSTANCES AND METHODS PROHIBITED AT ALL TIMES (IN- AND OUT-OF-COMPETITION) PROHIBITED SUBSTANCES Nothing in this list shall alter the requirements of post-race testing. S0. NON-APPROVED SUBSTANCES Any pharmacologic substance which is not addressed by any of the subsequent sections of the List and with no current approval by any governmental regulatory health authority for human or veterinary use (e.g., drugs under pre-clinical or clinical development, discontinued drugs, and designer drugs) is prohibited at all times. S00. THERAPEUTIC SUBSTANCES Therapeutic substances that are not otherwise prohibited pursuant to this list are permitted provided such substances: Have current approval for use in human, horse, or other animal by any governmental regulatory health authority in the jurisdiction where the horse is located S1. ANABOLIC AGENTS Anabolic agents are prohibited. 1. Anabolic Androgenic Steroids (AAS) 1.1. Exogenous* AAS, including: 1-androstenediol (5α-androst-1-ene-3β,17β-diol ); 1-androstenedione (5α- androst-1-ene-3,17-dione); bolandiol (estr-4-ene-3β,17β-diol ); bolasterone; boldenone; boldione (androsta-1,4-diene-3,17-dione); calusterone; clostebol; danazol -
Effects of Diethylstilbestrol on the Proliferation and Tyrosinase Activity of Cultured Human Melanocytes
BIOMEDICAL REPORTS 3: 499-502, 2015 Effects of diethylstilbestrol on the proliferation and tyrosinase activity of cultured human melanocytes JIANBING TANG, QIN LI, BIAO CHENG, CHONG HUANG and KUI CHEN Department of Plastic Surgery, The Key Laboratory of Trauma Treatment and Tissue Repair of Tropical Area, People's Liberation Army, HuaBo BioPharmaceutical Institute of Guangzhou, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China Received March 13, 2015; Accepted April 24, 2015 DOI: 10.3892/br.2015.472 Abstract. The aim of the present study was to observe the with estrogen. The pigmented spot becomes more severe and effects of different exogenous estrogen diethylstilbestrol (DES) malignant melanoma proceeds rapidly during an abnormal concentrations on the human melanocyte proliferation and menstruation or pregnancy. There are changes in the estrogen tyrosinase activity. Skin specimens were obtained following level in these physiological processes. Therefore, estrogen blepharoplasty, and the melanocytes were primary cultured is considered an important factor that affects pigmented and passaged to the third generation. The melanocytes were diseases (1). Diethylstilbestrol (DES) is a synthetic nonsteroidal seeded in 96-well plates, each well had 5x103 cells. The medium estrogen that can produce the same pharmacological effects as was changed after 24 h, and contained 10-4-10 -8 M DES. After natural estrogen (2). In order to explore the mechanism, the the melanocytes were incubated, the proliferation and tyrosi- excess skin following eyelid blepharoplasty was collected for nase activity were detected by the MTT assay and L-DOPA melanocyte culture and different DES concentrations were reaction. DES (10-8-10 -6 M) enhanced the proliferation of used to detect the effect on the proliferation and tyrosinase cultured melanocytes. -
Estrogen, Cosmetics, and Labeling in Canadian Regulatory Practices, 1939–1953
Potency and Power: Estrogen, Cosmetics, and Labeling in Canadian Regulatory Practices, 1939–1953 Lara Tessaro Kent Law School, University of Kent [email protected] Abstract Building on a rich body of feminist scholarship on estrogen, this account interrogates how potent estrogenic cosmetics and consumer product labels emerged together, through the regulatory practices of scientists and lawyers, in mid-century Canada. Composed from archival and other primary sources, the story traces the development of Canada’s first cosmetic regulations – which applied only to cosmetic products containing estrogens. In 1944, “sex hormones” had been the first substances for which the Department of National Health and Welfare adopted labels in lieu of dose or potency standards under the Food and Drugs Act. With dose-response thresholds thus written out of the Sex Hormone Regulations, in 1949, regulators devised a new type of consumer product label that warned women to use estrogenic cosmetic products “with care”. Further regulatory amendments in 1950 appeared, on their face, to require positive proof of safety for estrogenic cosmetics. However, through varied administrative and enforcement practices that hinged upon “directions for use” in product labels, National Health officials quietly reintroduced dose-response logics back into estrogen regulation. As legal technologies for disciplining women consumers to regulate their own exposures, product labels were becoming instrumental. With labeling, estrogen catalyzed an early example of risk regulation in Canada. Introduction Today, endocrine disruption is a well-established phenomenon. The fact that Tessaro, Lara. (2020). Potency and power: Estrogen, cosmetics, and labeling in Canadian regulatory practices, 1939–1953. Catalyst: Feminism, Theory, Technoscience, 6(1), page 1-43. -
Endocrine Disruptors and Their Influence in the Origin of Breast Neoplasm and Other Breast Pathologies
REVIEW ARTICLE DOI: 10.29289/2594539420180000294 ENDOCRINE DISRUPTORS AND THEIR INFLUENCE IN THE ORIGIN OF BREAST NEOPLASM AND OTHER BREAST PATHOLOGIES Disruptores endócrinos e o seu papel na gênese das neoplasias e de outras patologias das mamas Mauri José Piazza1*, Almir Antônio Urbanetz1, Cicero Urban2 ABSTRACT A higher occurrence of early breast cancer in women has created the need to identify possible etiologic agents characterized as direct co-responsible. The motivation for this review is the relevance of detecting potential endocrine disruptors responsible for harmful effects on breast tissue and, consequently, its damage. KEYWORDS: Breast; breast cancer; breast neoplasms. RESUMO Uma maior ocorrência no surgimento precoce das neoplasias das mamas em mulheres tem gerado a necessidade da descoberta dos possíveis agentes etiológicos caracterizados como corresponsáveis diretos. A relevância da detecção dos possíveis disruptores endócrinos responsáveis por exercer efeitos danosos nos tecidos mamários e, consequentemente, o seu comprometimento é a motivação da presente revisão. PALAVRAS-CHAVE: Mama; câncer de mama; neoplasias da mama. Study conducted at Universidade Federal do Paraná – Curitiba (PR), Brazil. 1Department of Obstetrics and Gynecology, Universidade Federal do Paraná – Curitiba (PR), Brazil. 2Universidade Positivo – Curitiba (PR), Brazil. *Corresponding author: [email protected] Conflict of interests: nothing to declare. Received on: 11/16/2017. Accepted on: 02/05/2018. Mastology, 2018;28(4):257-67 257 Piazza MJ, Urbanetz AA, Urban C INTRODUCTION 2. Phthalates (Figure 2): phthalates and phthalate esters are also In recent decades, a higher incidence of hormone-dependent neo- commonly used in the plastic and toys industries, in cosmet- plasms has been observed in body parts such as breasts, endo- ics, and in medical tubing manufacturing.