Accompanying his 32year old partner (with like her mother BRCA+ breast cancer ), a young man this week complains sorrowfully of total erectile failure within three days every time he resumes fluoxetine for longstanding depression.
This may suit those patients who eschew sexuality, who knowingly choose chemical castration.. But the drug doesnt fix the causes of depression, merely palliates, often no better than a placebo, sometimes worse- compared to natural multibeneficial antidepressant supplements.
We already long live in a sea of estrogenic endocrine disruptors decimating many species including humans, like pesticides and PCBs, as so aptly described by Deborah Cadbury and Prof Nils Skakkebaek in classic books eg The Feminization of Nature and The Estrogen Effect.
The commonest prescription drugs (synthetics- antidepressants; major psychotropes; amoxicillin, oxidants ( betablockers eg atenolol; nonsteroidal anti-inflammatory NSAID (which block antidepressant effects –the Paul Greengard hypothesis 2011 Rocherfeller Inst NY); statins (cholesterol -steroid and insulin disruptors), and patent synthetic sex hormones- are now routine if not mandatory prescription worldwide due to ruthless relentless marketing pressure- disease-mongering for profit- even in children, and worse, in patients with cancers. The commonest cancers- breast, prostate, uterus- are estrogen-driven.
Such environmentally and biologically hostile designer patent drugs-for-profit are increasingly detectable in surface wastewater globally from human excretion, and thus drinking water supplies .
Endocrine disruption studies of antidepressants (eg fluoxetine Prozacs, mianserin Lantanon (its commercial analogue successor is now Remeron), Bupropion Wellbutrin Zyban; Venlafaxine Effexor and desimipramine) in surface water in Canada, USA, Mexico, Brazil and Belgium since 2006, and longer for antipsychotics, statins and NSAIDS, show estrogenic ie antiandrogenic risks for eg gender development and thus for breast/prostate cancer, for virility and fertility..
Doctors mostly blithely ignore that reproductive young females have by evolutionary reproductive necessity 100fold lower androgenic:estrogenic balance (eg 3:1) than men (eg 300:1), and are also far more prone than males both to estrogenic contraception prescription harm, and to common major depression and autoimmune disease like rheumatod arthritis and lupus, and thus to the double peril of mutiple estrogenic prescription.
Recently common NSAIDs eg ibrufen, diclofenac and mefanemic acid have been shown to be estrogenic in fish.
But such elective prescription of ( endocrine disruption) cancer- and infertility- promotors (antidepressants, NSAIDS, hormone contraception and HRT etc) , is hardly desirable or ethical at any age, especially when patients and their parents are not informed of the grave risks of these drugs with no proven longterm benefits (except for contraception).
new reviews gives more insight from a plastic surgeon into prevention, including the harms of xray mammography.
and into the gross dangerous overprescription of diabetogenic depressing hepato-nephro-myotoxic statins for all.
Popular painkillers eg opioids like oxycodin, fentanyl, tramadol on the other hand are similarly also powerful longacting hypoandrogenism–inducing drugs promoting estrogen dominance – which further complicates the misery and depression of those in chronic pain or depression, including from cancer, especially in women as well as men; who thus require monitoring of gonadal hormone levels and, if deficient, testosterone replacement. Aloisi ea Univ Siena 2012.
2012:34:80-5. In vivo and in vitro estrogenic activity of the antidepressant fluoxetine.Müller JC
, Imazaki PH
, Boareto AC
, Lourenço EL
, Golin M
, Vechi MF
, Lombardi NF
, Minatovicz BC
, Scippo ML
, Martino-Andrade AJ
, Dalsenter PR
. University of Paraná, Brazil. .Recent years have seen an increase in the use of antidepressant drugs, especially fluoxetine (FLX), in sensitive populations, such as pregnant and lactating women. Although some evidence suggests a possible endocrine action of FLX, no specific studies have been performed to investigate this hypothesis. In the present study, we investigated the possible (anti)androgenic and (anti)estrogenic actions of FLX using Hershberger, uterotrophic (0.4, 1.7, and 17mg/kg), and reporter gene (7.6-129μM) assays. In the Hershberger assay, no differences were observed in androgen-dependent organ weights. However, the uterotrophic and gene reporter assays indicated a possible estrogenic action of FLX. Uterine weight increased in the 1.7 and 17mg/kg/day groups in the 3-day uterotrophic assay in immature rats. Additionally, noncytotoxic concentrations of FLX induced estrogenic responses and increased the estrogenic response of estradiol in MCF-7 breast cancer. Recent years have seen an increase in the use of antidepressant drugs, especially fluoxetine (FLX), in sensitive populations, such as pregnant and lactating women. Although some evidence suggests a possible endocrine action of FLX, no specific studies have been performed to investigate this hypothesis. In the present study, we investigated the possible (anti)androgenic and (anti)estrogenic actions of FLX using Hershberger, uterotrophic (0.4, 1.7, and 17mg/kg), and reporter gene (7.6-129μM) assays. In the Hershberger assay, no differences were observed in androgen-dependent organ weights. However, the uterotrophic and gene reporter assays indicated a possible estrogenic action of FLX. Uterine weight increased in the 1.7 and 17mg/kg/day groups in the 3-day uterotrophic assay in immature rats. Additionally, noncytotoxic concentrations of FLX induced estrogenic responses and increased the estrogenic response of estradiol in MCF-7 breast cancer cells transfected with luciferase.
Pharmacol Biochem Behav.
2013103: 659-65..Participation of estrogen receptors in the antidepressant-like effect of prolame on the forced swimming test. Lemini C
, Cruz-López B
, Martínez-Mota L
Universidad Nacional Autónoma de México, Mexico.Estrogen therapy may produce antidepressant-like actions, but the side effects, such as thromboembolic events, may restrict its use among women. The 17β-aminoestrogens (AEs) [prolame [17β-(3-hidroxy-1-propylamino)-1,3,5(10)-estratrien-3-ol)], butolame [17β-(3-hidroxy-1-butylamino)-1,3,5(10)-estratrien-3-ol)], and pentolame [17β-(5-hidroxy-1-pentylamino)-1,3,5(10)-estratrien-3-ol)] induce estrogenic and anticoagulant actions, effects that could prove advantageous in an estrogen therapy; however, their antidepressant-like effects have not been described. The objective of this study was to determine the effect of these 17β-AEs (prolame, butolame and pentolame) in the forced swimming test (FST), an animal model sensitive to antidepressant drugs, and to establish the role of estrogen receptors in such actions. Ovariectomized female rats treated with prolame (10-200 μg/rat) showed a reduction in immobility and an increase in active behaviors in the FST, while this effect was not produced by butolame and pentolame (10-200 μg/rat). The antidepressant-like effect of prolame was similar to that of 17β-estradiol (E2, 5-20 μg/rat), sharing with it a biphasic profile but at higher doses. Antidepressant-like actions of prolame and E2 were not associated with changes in locomotor activity. With respect to a control group tamoxifen (15 mg/kg) by itself produced no changes in all behavioral evaluations, but canceled the antidepressant-like effect of prolame and E2. It is concluded that estrogen receptors participate in antidepressant-like effect of both estrogens in the FST. Antidepressant-like activity of different AEs is discussed considering their differences in chemical structure and the schedule used. Our results show additional central actions of prolame besides its pro-sexual, anti-coagulant, estrogenic and anxiolytic activity.
2011:104::38-47. Selective uptake and biological consequences of environmentally relevant antidepressant pharmaceutical exposures on male fathead minnows. Schultz MM
, Painter MM
, Bartell SE
, Logue A
, Furlong ET
, Werner SL
, Schoenfuss HL
The College of Wooster, OH USA Antidepressant pharmaceuticals have been reported in wastewater effluent at the nanogram to low microgram-per-liter range, and include bupropion (BUP), fluoxetine (FLX), sertraline (SER), and venlafaxine (VEN). To assess the effects of antidepressants on reproductive anatomy, physiology, and behavior, adult male fathead minnows (Pimephales promelas) were exposed for 21 days either to a single concentration of the antidepressants FLX, SER, VEN, or BUP, or to an antidepressant mixture. The data demonstrated that exposure to VEN (305 ng/L and 1104 ng/L) and SER (5.2 ng/L) resulted in mortality. Anatomical alterations were noted within the testes of fish exposed to SER and FLX, both modulators of the neurotransmitter serotonin. Additionally, FLX at 28 ng/L induced vitellogenin in male fish–a common endpoint for estrogenic endocrine disruption. Significant alterations in male secondary sex characteristics were noted with single exposures. Effects of single compound exposures neither carried over, nor became additive in the antidepressant mixtures, and reproductive behavior was not affected. Analysis of brain tissues from the exposed fish suggested increased uptake of FLX, SER and BUP and minimal uptake of VEN when compared to exposure water concentrations. Furthermore, the only metabolite detected consistently in the brain tissues was norfluoxetine. Similar trends of uptake by brain tissue were observed when fish were exposed to antidepressant mixtures. The present study demonstrates that anatomy and physiology, but not reproductive behavior, can be disrupted by exposure to environmental concentrations of some antidepressants. The observation that antidepressant uptake into fish tissues is selective may have consequences on assessing the mode-of-action and effects of these compounds in future studies.
Aquat Toxicol. 2010 ;100:354-64 .Waterborne fluoxetine disrupts the reproductive axis in sexually mature male goldfish, Carassius auratus.nMennigen JA, Lado WE, Zamora JM, Duarte-Guterman P, Langlois VS, Metcalfe CD, Chang JP, Moon TW, Trudeau VL University of Ottawa, Ontario, Canada. Fluoxetine (FLX) is a pharmaceutical acting as a selective serotonin reuptake inhibitor and is used to treat depression in humans. Fluoxetine and the major active metabolite norfluoxetine (NFLX) are released to aquatic systems via sewage-treatment effluents. They have been found to bioconcentrate in wild fish, raising concerns over potential endocrine disrupting effects. The objective of this study was to determine effects of waterborne FLX, including environmental concentrations, on the reproductive axis in sexually mature male goldfish. We initially cloned the goldfish serotonin transporter to investigate tissue and temporal expression of the serotonin transporter, the FLX target, in order to determine target tissues and sensitive exposure windows. Sexually mature male goldfish, which showed the highest levels of serotonin transporter expression in the neuroendocrine brain, were exposed to FLX at 0.54μg/L and 54μg/L in a 14-d exposure before receiving vehicle or sex pheromone stimulus consisting of either 4.3nM 17,20β-dihydroxy-4-pregnene-3-one (17,20P) or 3nM prostaglandin F₂(α) (PGF₂(α)). Reproductive endpoints assessed included gonadosomatic index, milt volume, and blood levels of the sex steroids testosterone and estradiol. Neuroendocrine function was investigated by measuring blood levels of luteinizing hormone, growth hormone, pituitary gene expression of luteinizing hormone, growth hormone and follicle-stimulating hormone and neuroendocrine brain expression of isotocin and vasotocin. To investigate changes at the gonadal level of the reproductive axis, testicular gene expression of the gonadotropin receptors, both the luteinizing hormone receptor and the follicle-stimulating hormone receptor, were measured as well as expression of the growth hormone receptor. To investigate potential impacts on spermatogenesis, testicular gene expression of the spermatogenesis marker vasa was measured and histological samples of testis were analyzed qualitatively. Estrogen indices were measured by expression and activity analysis of gonadal aromatase, as well as liver expression analysis of the estrogenic marker, esr1. After 14d, basal milt volume significantly decreased at 54μg/L FLX while pheromone-stimulated milt volume decreased at 0.54μg/L and 54μg/L FLX. Fluoxetine (54μg/L) inhibited both basal and pheromone-stimulated testosterone levels. Significant concentration-dependent reductions in follicle-stimulating hormone and isotocin expression were observed with FLX in the 17,20P- and PGF₂(α)-stimulated groups, respectively. Estradiol levels and expression of esr1 concentration-dependently increased with FLX. This study demonstrates that FLX disrupts reproductive physiology of male fish at environmentally relevant concentrations, and potential mechanisms are discussed.
Pharmacol Biochem Behav.
2008 ;88:332-40.Estrogens participate in the antidepressant-like effect of desipramine and fluoxetine in male rats.Martínez-Mota L
, Cruz-Martínez JJ
, Márquez-Baltazar S
, Fernández-Guasti A
Instituto Nacional de Psiquiatría Mexico City In male rats, the antidepressant-like effect of fluoxetine (FLX) and desipramine (DMI) in the forced swimming test (FST) is reduced by orchidectomy and partially restored by testosterone (T). It is unknown if this modulation of T is produced by its estrogenic metabolites. The objectives of this study were to evaluate if the aromatase inhibitor, formestane, interferes with the antidepressant-like effect of DMI and FLX in intact male rats, and to analyze if 17beta-estradiol (E2) modifies the FST and interacts with the antidepressants in orchidectomized (Orx) males. Intact males received DMI (1.25-5.0 mg/kg) and FLX (2.5-10 mg/kg) alone or in combination with formestane (17.5 mg/kg). Orx rats received E2 (5, 10, 20 and 40 microg/rat) or the combination of E2 [at sub-threshold (5 microg/rat) and optimal (10 microg/rat) doses] plus sub-effective doses of DMI (2.5 mg/kg) or FLX (10 mg/kg). Serum testosterone and estradiol levels were measured in intact-control and -formestane treated animals as well as in castrated males replaced with various doses of E2. Formestane in intact males lacked of an action in the FST, but cancelled the antidepressant-like effect of DMI and FLX. E2 at the supra-physiological doses of 10 and 20 microg/rat produced antidepressant-like effects. E2 at 5 microg/rat (that re-established the levels of this hormone to physiological levels) and at 10 microg/rat restored the antidepressant-like action of DMI and FLX in Orx rats. It was concluded that estrogens participate in the antidepressant-like effect of DMI and FLX in the FST.
Chemosphere. 2006:;65:1836-45.. Effects of the antidepressant mianserin in zebrafish: molecular markers of endocrine disruption.van der Ven K, Keil D, Moens LN, Hummelen PV, van Remortel P, Maras M, De Coen W. University of Antwerp, Belgium. Due to their environmental occurrence and intrinsic biological activity, human pharmaceuticals have received increasing attention from environmental and health agencies. Of particular, ecotoxicological concern are drugs that affect nervous- and endocrine-systems. Zebrafish genome-wide oligo arrays are used to collect mechanistic information on mianserin-induced changes in gene expression in zebrafish. Gene expression analysis in brain and gonad tissue clearly demonstrated the estrogenic activity of mianserin and its potency to disrupt normal endocrine (estrogenic) signaling, based on induction of molecular biomarkers of estrogenicity (e.g., vitellogenin1 and zona pellucida proteins). The possible mechanism underlying this estrogenic activity of mianserin is disturbance of the Hypothalamo-Pituitary-Gonadal (HPG) axis by direct interference of mianserin with the serotonergic and adrenergic systems in the brain of zebrafish. Taking into account the importance of the HPG-axis, and considering the concept of ‘critical window of exposure’, our results reveal the importance for more elaborate testing of endocrine disruptive effects of aquatic antidepressants at different lifestages and during longer exposure periods (e.g., life cycle studies). Although there is a low concordance between the gene expression results in this study and previous cDNA microarray hybridizations, the global mechanistic expression patterns are similar in both platforms. This argues in favor of pathway-driven analysis of gene expression results compared to gene-per-gene analysis.
J Hazard Mater.
2013 Jun 15;254-255:242-51. .Effects of non-steroidal anti-inflammatory drugs on hormones and genes of the hypothalamic-pituitary-gonad axis, and reproduction of zebrafish. Ji K
, Liu X
, Lee S
, Kang S
, Kho Y
, Giesy JP
, Choi K
. Seoul National University, Korea.This study was conducted in two experiments, to identify non-steroidal anti-inflammatory drugs (NSAIDs) with high endocrine disruption potentials, and to understand consequences of exposure to such NSAIDs in fish. In the first experiment, the effects of five NSAIDs on hormones and gene transcriptions of the hypothalamic-pituitary-gonad (HPG) axis were evaluated after 14 d exposure of adult zebrafish. Ibuprofen and mefenamic acids were identified to increase the concentrations of 17β-estradiol and testosterone in females significantly, while decreased those of testosterone among male fish. Significant up-regulation of fshβ, lhβ, fshr and lhr were observed in females, whereas down-regulation was observed in males exposed to each NSAID. In the second experiment, ibuprofen was chosen as a model chemical. Adult zebrafish pairs were exposed to ibuprofen for 21 d, and the effects on reproduction and development of offspring were examined. The egg production was significantly decreased at ≥1 μg/L ibuprofen, and parental exposure resulted in delayed hatching even when they were transferred to clean water for hatching. The results demonstrated that ibuprofen could modulate hormone production and related gene transcription of the HPG axis in a sex-dependent way, which could cause adverse effects on reproduction and the development of offspring.
University of Algarve, Portugal .buprofen (IBU) is one of the most sold over-the-counter non-steroidal anti-inflammatory drugs (NSAID) and widely detected in the aquatic ecosystems. Nevertheless, the information regarding IBU effects in biota is still sparse. The goal of this study was to assess IBU potential effect as oxidative stress and endocrine disruption inducer in mussel Mytilus galloprovincialis applying a battery of biomarkers. Over two weeks of exposure to IBU (250 ngL(-1)), superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), phase II glutathione S-transferase (GST) activities and lipid peroxidation (LPO) levels were determined in the digestive gland and alkali-labile phosphates (ALP) were carried out in sex-differentiated mussels’ gonads. The results confirm a transitory induction of antioxidant activities responses concomitant to lipid peroxide formation outline and an increase of ALP levels over time, particularly in exposed males which may lead to mussels’ reproductive fitness impairment highlighting a higher impact of IBU as an endocrine disruptor than as a short-term reactive oxygen species (ROS)-generator.
2011 ;105:264-9..Non-steroidal anti-inflammatory drug (NSAID) ibuprofen distresses antioxidant defense system in mussel Mytilus galloprovincialis gills.Gonzalez-Rey M
, Bebianno M
University of Algarve, Portugal.Active pharmaceutical ingredients (APIs) are presently considered an emergent class of environmental contaminants. Ibuprofen (IBU) is one of the most applied non-steroidal anti-inflammatory drugs (NSAIDs) in the world. Several authors report the occurrence of IBU in influents and effluents of waste water treatment plants (WWTPs), surface, river and public tap water in numerous countries. However, very little is known about the risks and chronic effects of IBU exposure in non-target organisms. This approach undertakes the assessment of several oxidative stress biomarkers responses through the analysis of antioxidant enzymes activities (superoxide dismutase – SOD, catalase – CAT, glutathione S-transferase – GST, glutathione reductase – GR) and lipid peroxidation (LPO) levels in sentinel species mussel Mytilus galloprovincialis gills exposed for 2 weeks to an environmental realistic concentration of IBU. Results clearly show the significant induction and positive correlation between SOD activity and LPO in exposed gills, concomitant to an antioxidant defense depletion of CAT, GR and GST compared to controls. The integration of all biomarkers in mussels’ gills separates non- and exposed groups supporting the breakdown of the redox defense system and IBU’s pro-oxidant action. Further studies are needed to test possible endocrine disruption effects in mussels’ reproduction fitness as IBU is involved on prostaglandins biosynthesis inhibition.
BMC Med. 2013; 11:57.. The effect of statins on testosterone in men and women, a systematic review and meta-analysis of randomized controlled trials. Schooling CM, Au Yeung SL, Freeman G, Cowling BJ. CUNY School of Public Health York, .Statins are extensively used for cardiovascular disease prevention. Statins reduce mortality rates more than other lipid-modulating drugs, although evidence from randomized controlled trials also suggests that statins unexpectedly increase the risk of diabetes and improve immune function. Physiologically, statins would be expected to lower androgens because statins inhibit production of the substrate for the local synthesis of androgens and statins’ pleiotropic effects are somewhat similar to the physiological effects of lowering testosterone, so we hypothesized that statins lower testosterone. METHODS:A meta-analysis of placebo-controlled randomized trials of statins to test the a priori hypothesis that statins lower testosterone. We searched the PubMed, Medline and ISI Web of Science databases until the end of 2011, using ‘(Testosterone OR androgen) AND (CS-514 OR statin OR simvastatin OR atorvastatin OR fluvastatin OR lovastatin OR rosuvastatin OR pravastatin)’ restricted to randomized controlled trials in English, supplemented by a bibliographic search. We included studies with durations of 2+ weeks reporting changes in testosterone. Two reviewers independently searched, selected and assessed study quality. Two statisticians independently abstracted and analyzed data, using random or fixed effects models, as appropriate, with inverse variance weighting.RESULTS:Of the 29 studies identified 11 were eligible. In 5 homogenous trials of 501 men, mainly middle aged with hypercholesterolemia, statins lowered testosterone by -0.66 nmol/l (95% confidence interval (CI) -0.14 to -1.18). In 6 heterogeneous trials of 368 young women with polycystic ovary syndrome, statins lowered testosterone by -0.40 nmol/l (95% CI -0.05 to -0.75). Overall statins lowered testosterone by -0.44 nmol/l (95% CI -0.75 to -0.13). CONCLUSIONS: Statins may partially operate by lowering testosterone. Whether this is a detrimental side effect or mode of action warrants investigation given the potential implications for drug development and prevention of non-communicable chronic diseases. See commentary article here http://www.biomedcentral.com/1741-7015/11/58.
2009 ;77 :1285-91.Occurrence and fate of rosuvastatin, rosuvastatin lactone, and atorvastatin in Canadian sewage and surface water samples. Lee HB
, Peart TE
, Svoboda ML
, Backus S
. Aquatic Ecosystem Protection Research Branch, Environment Canada Rosuvastatin (RST) and atorvastatin (ATO) are prescription drugs and members in the statin family used for the treatment of elevated cholesterol levels. A method using solid-phase extraction and liquid chromatography-tandem mass spectrometry (LC-MS/MS) for the determination of ATO, RST and its metabolite rosuvastatin lactone (RSTL) in sewage and surface water samples has been developed. In the influent and effluent samples collected from 11 sewage treatment plants located in Ontario, Canada, ATO, RST, and RSTL were detected in all samples with median concentrations of 166 ng L(-1) (influent) and 77 ng L(-1) (effluent) for ATO, 448 ng L(-1) (influent) and 324 ng L(-1) (effluent) for RST, as well as 158 ng L(-1) (influent) and 41 ng L(-1) (effluent) for RSTL. Due to the inter-conversion between RST and RSTL, the total concentration of RST and RSTL in a sewage sample should be reported. The median removal rate by wastewater treatment was 66% for ATO and 22% for RST and RSTL combined. These statins were quite persistent in sewage. After a storage period of 21 and 62 days, there was only a slight decrease in ATO concentration and no change in the total RST concentrations
. These three compounds were also detected in a number of surface water samples at low ng L(-1) concentrations. This is the first reported occurrence and fate of RST and RSTL in the Canadian aquatic environment.
Consequences of long-term exposure to diclofenac up to 3 months were evaluated using freshwater crustaceans (Daphnia magna and Moina macrocopa) and a fish (Oryzias latipes). Marked decrease of reproduction was observed at 25 mg/L for D. magna, and at 50 mg/L for M. macrocopa. Three-month exposure of fish to 0.001-10 mg/L of diclofenac resulted in significant decreasing trend in hatching success and delay in hatch. The hatching of the eggs produced from the fish exposed to 10 mg/L was completely interfered, while fertility of the parent generation was not affected. Gonadosomatic index (GSI) of female fish was also affected at 10 mg/L. Predicted no effect concentration of diclofenac was estimated at 0.1 mg/L, which is a few orders of magnitude greater than those observed in ambient water. Therefore direct impact of diclofenac exposure is not expected. However its bioaccumulation potential through food web should warrant further evaluation.\
J Toxicol Environ Health A.
2009;72(10):633-41. Life-cycle exposure of fathead minnows to a mixture of six common pharmaceuticals and triclosan.Parrott JL
, Bennie DT Water Science and Technology Directorate, Environment Canada,Fathead minnows were exposed for a life cycle to environmentally relevant concentrations of a mixture of six common pharmaceuticals and one personal care product (nominal concentrations: 1,000, 300, 100, 30, or 10 ng/L). Mean measured concentrations of each chemical in the highest fish exposure aquaria were: naproxen 793 ng/L, gemfibrozil 662 ng/L, diclofenac 331 ng/L, ibuprophen 217 ng/L, triclosan 115 ng/L, salicylic acid 67 ng/L, and acetaminophen (chemical analysis inconclusive, nominal 1000 ng/L). Fish exposed for a life cycle even to the highest concentrations of the six pharmaceuticals and personal care product (PPCP) mixture showed no significant changes in growth and development compared to control. Length, weights, condition factors, liver weights, and gonad weights of PPCP-exposed fish were similar to water and solvent controls (0.000005% ethanol v/v). There were no marked effects of PPCP mixture exposure on external sex characteristics of the fish or on egg production. The only parameter that appeared to be affected was percent larval deformities in F1, which showed a significant increase in the 100- and 300-ng/L (nominal) PPCP mixture. Larvae from control fish had 4.7% (water controls) and 3.4% (solvent controls) deformities, compared to 9.3% in the 100-ng/L (nominal) PPCP mixture and 9.2% deformities in the 300-ng/L (nominal) PPCP mixture. Chronic exposure to environmentally relevant concentrations of seven PPCP most often detected in Canadian municipal wastewater effluents (MWWE) did not appear to affect fathead minnow survival, growth, or egg production, although it produced quantitative increases in deformities in the F1 generation.
1993 Aug;8(8):1168-72.Autonomic nervous modulation and effects of a prostaglandin synthase inhibitor on human cervical secretion.Jonsson B
Karolinska Hospital, Stockholm, Sweden.Modulation of cervical secretion at ovulation time was studied in 10 women with regular menstruations. In an in-vivo model with repeated collection of mucus samples during three 90-min periods, the amounts of mucus in a control cycle and in three experimental cycles were compared. Drugs interacting with the autonomic nervous system and a prostaglandin synthase inhibitor were administered at time of ovulation. The cholinomimetic drug carbacholine significantly increased cervical secretion, while the anticholinergic drug butylscopolamine markedly inhibited this secretion. A long-lasting decrease in secretion was seen after administration of the prostaglandin synthase inhibitor diclofenac. Beside regulation of cervical secretion by the ovarian hormones, these results suggest an autonomic nervous modulation of cervical secretion, and in addition an impact on cervical by a prostaglandin synthase inhibitor. The effects on fertility regulation in the female are discussed.
2010 Jan;44(2):555-66. Oxidative transformation of micropollutants during municipal wastewater treatment: comparison of kinetic aspects of selective (chlorine, chlorine dioxide, ferrate VI, and ozone) and non-selective oxidants (hydroxyl radical).Lee Y
, von Gunten U
. Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland. Chemical oxidation processes have been widely applied to water treatment and may serve as a tool to minimize the release of micropollutants (e.g. pharmaceuticals and endocrine disruptors) from municipal wastewater effluents into the aquatic environment. The potential of several oxidants for the transformation of selected micropollutants such as atenolol, carbamazepine, 17 alpha-ethinylestradiol (EE2), ibuprofen, and sulfamethoxazole
was assessed and compared. The oxidants include chlorine, chlorine dioxide, ferrate(VI), and ozone as selective oxidants versus hydroxyl radicals as non-selective oxidant. Second-order rate constants (k) for the reaction of each oxidant show that the selective oxidants react only with some electron-rich organic moieties (ERMs), such as phenols, anilines, olefins, and deprotonated-amines. In contrast, hydroxyl radicals show a nearly diffusion-controlled reactivity with almost all organic moieties (k>or=10(9)M(-1) s(-1)). Due to a competition for oxidants between a target micropollutant and wastewater matrix (i.e. effluent organic matter, EfOM), a higher reaction rate with a target micropollutant does not necessarily translate into more efficient transformation. For example, transformation efficiencies of EE2, a phenolic micropollutant, in a selected wastewater effluent at pH 8 varied only within a factor of 7 among the selective oxidants, even though the corresponding k for the reaction of each selective oxidant with EE2 varied over four orders of magnitude. In addition, for the selective oxidants, the competition disappears rapidly after the ERMs present in EfOM are consumed. In contrast, for hydroxyl radicals, the competition remains practically the same during the entire oxidation. Therefore, for a given oxidant dose, the selective oxidants were more efficient than hydroxyl radicals for transforming ERMs-containing micropollutants, while hydroxyl radicals are capable of transforming micropollutants even without ERMs. Besides EfOM, ammonia, nitrite, and bromide were found to affect the micropollutant transformation efficiency during chlorine or ozone treatment.
Toxicol Appl Pharmacol.
2007 Dec 1;225:142-53. .Modulation of steroidogenic gene expression and hormone production of H295R cells by pharmaceuticals and other environmentally active compounds.Gracia T
, Hilscherova K
, Jones PD
, Newsted JL
, Higley EB
, Zhang X
, Hecker M
, Murphy MB
, Yu RM
, Lam PK
, Wu RS
, Giesy JP
.Michigan State University, The H295R cell bioassay was used to evaluate the potential endocrine disrupting effects of 18 of the most commonly used pharmaceuticals in the United States. Exposures for 48 h with single pharmaceuticals and binary mixtures were conducted; the expression of five steroidogenic genes, 3betaHSD2, CYP11beta1, CYP11beta2, CYP17 and CYP19, was quantified by Q-RT-PCR. Production of the steroid hormones estradiol (E2), testosterone (T) and progesterone (P) was also evaluated. Antibiotics were shown to modulate gene expression and hormone production. Amoxicillin up-regulated the expression of CYP11beta2 and CYP19 by more than 2-fold and induced estradiol production up to almost 3-fold
. Erythromycin significantly increased CYP11beta2 expression and the production of P and E2 by 3.5- and 2.4-fold, respectively, while production of T was significantly decreased. The beta-agonist salbutamol caused the greatest induction of CYP17, more than 13-fold, and significantly decreased E2 production.
The binary mixture of cyproterone and salbutamol significantly down-regulated expression of CYP19, while a mixture of ethynylestradiol and trenbolone, increased E2 production 3.7-fold. Estradiol production was significantly affected by changes in concentrations of trenbolone, cyproterone, and ethynylestradiol. Exposures with individual pharmaceuticals showed the possible secondary effects that drugs may exert on steroid production. Results from binary mixture exposures suggested the possible type of interactions that may occur between drugs and the joint effects product of such interactions. Dose-response results indicated that although two chemicals may share a common mechanism of action the concentration effects observed may be significantly different.