Chlorpyrifos-methyl


Associated AOPs with Level of Relevance - 1 AOPs with at least 1 KE associated with chemical, where the KE(s) are neither MIE nor AO

AOP Identifier AOP Title AO Classification OECD Status Taxonomic applicability Coverage Score The fraction of KEs within the AOP, that are mapped to the chemical-associated toxicological endpoints. KE Identifier KE Name
AOP:8Upregulation of Thyroid Hormone Catabolism via Activation of Hepatic Nuclear Receptors, and Subsequent Adverse Neurodevelopmental Outcomes in MammalsNervous system diseaseUnder DevelopmentRat0.22KE:295Induction, Upregulation of glucuronyltransferase activity
KE:281Thyroxine (T4) in serum, Decreased
AOP:23Androgen receptor agonism leading to reproductive dysfunction (in repeat-spawning fish)UnclassifiedWPHA/WNT EndorsedPimephales promelas0.2KE:219Reduction, Plasma 17beta-estradiol concentrations
KE:3Reduction, 17beta-estradiol synthesis by ovarian granulosa cells
AOP:25Aromatase inhibition leading to reproductive dysfunctionUnclassifiedWPHA/WNT EndorsedFathead minnow, Medaka, Zebrafish0.25KE:219Reduction, Plasma 17beta-estradiol concentrations
KE:3Reduction, 17beta-estradiol synthesis by ovarian granulosa cells
AOP:27Cholestatic Liver Injury induced by Inhibition of the Bile Salt Export Pump (ABCB11)Gastrointestinal system diseaseUnder DevelopmentHumans0.12KE:288Activation of specific nuclear receptors, Transcriptional change
AOP:54Inhibition of Na+/I- symporter (NIS) leads to learning and memory impairmentDevelopmental disorder of mental healthWPHA/WNT EndorsedHomo sapiens, Rattus sp.0.1KE:281Thyroxine (T4) in serum, Decreased
AOP:110Inhibition of iodide pump activity leading to follicular cell adenomas and carcinomas (in rat and mouse)Cancer; Endocrine system disease-Rattus norvegicus, Mus musculus0.29KE:1023Increased, Thyroid-stimulating hormone (TSH)
KE:281Thyroxine (T4) in serum, Decreased
AOP:120Inhibition of 5α-reductase leading to Leydig cell tumors (in rat)Cancer; Reproductive system disease-Rattus norvegicus, Mus musculus0.2KE:1690Decrease, circulating testosterone levels
AOP:122Prolyl hydroxylase inhibition leading to reproductive dysfunction via increased HIF1 heterodimer formationUnclassified-Pimephales promelas0.2KE:219Reduction, Plasma 17beta-estradiol concentrations
KE:3Reduction, 17beta-estradiol synthesis by ovarian granulosa cells
AOP:123Unknown MIE leading to reproductive dysfunction via increased HIF-1alpha transcriptionUnclassified-Pimephales promelas0.18KE:219Reduction, Plasma 17beta-estradiol concentrations
KE:3Reduction, 17beta-estradiol synthesis by ovarian granulosa cells
AOP:128Kidney dysfunction by decreased thyroid hormoneUrinary system diseaseUnder DevelopmentSprague-Dawley, Homo sapiens0.09KE:281Thyroxine (T4) in serum, Decreased
AOP:131Aryl hydrocarbon receptor activation leading to uroporphyriaInherited metabolic disorderWPHA/WNT EndorsedMouse, Rat, Human, Japanese quail, Chicken, Herring gull, Common Starling0.17KE:850Induction, CYP1A2/CYP1A5
AOP:134Sodium Iodide Symporter (NIS) Inhibition and Subsequent Adverse Neurodevelopmental Outcomes in MammalsCognitive disorder-Rat, Homo sapiens0.11KE:281Thyroxine (T4) in serum, Decreased
AOP:136Intracellular Acidification Induced Olfactory Epithelial Injury Leading to Site of Contact Nasal TumorsBenign neoplasm; Respiratory system diseaseUnder Review0.14KE:868Increase, Tissue Degeneration, Necrosis & Atrophy
AOP:155Deiodinase 2 inhibition leading to increased mortality via reduced posterior swim bladder inflationUnclassifiedWPHA/WNT EndorsedFathead minnow, Zebrafish0.17KE:1003Decreased, Triiodothyronine (T3)
AOP:156Deiodinase 2 inhibition leading to increased mortality via reduced anterior swim bladder inflationUnclassifiedWPHA/WNT EndorsedZebrafish, Fathead minnow0.17KE:1003Decreased, Triiodothyronine (T3)
AOP:157Deiodinase 1 inhibition leading to increased mortality via reduced posterior swim bladder inflationUnclassifiedWPHA/WNT EndorsedZebrafish, Fathead minnow0.17KE:1003Decreased, Triiodothyronine (T3)
AOP:158Deiodinase 1 inhibition leading to increased mortality via reduced anterior swim bladder inflationUnclassifiedWPHA/WNT EndorsedZebrafish, Fathead minnow0.17KE:1003Decreased, Triiodothyronine (T3)
AOP:176Sodium Iodide Symporter (NIS) Inhibition leading to altered amphibian metamorphosisUnclassified-African clawed frog0.2KE:281Thyroxine (T4) in serum, Decreased
AOP:188Iodotyrosine deiodinase (IYD) inhibition leading to altered amphibian metamorphosisUnclassified-African clawed frog0.2KE:281Thyroxine (T4) in serum, Decreased
AOP:189Type I iodothyronine deiodinase (DIO1) inhibition leading to altered amphibian metamorphosisUnclassified-African clawed frog0.5KE:1116Decreased, Triiodothyronine (T3) in tissues
KE:1003Decreased, Triiodothyronine (T3)
AOP:190Type II iodothyronine deiodinase (DIO2) inhibition leading to altered amphibian metamorphosisUnclassified-African clawed frog0.33KE:1116Decreased, Triiodothyronine (T3) in tissues
KE:1023Increased, Thyroid-stimulating hormone (TSH)
AOP:192Pendrin inhibition leading to altered amphibian metamorphosisUnclassified-African clawed frog0.25KE:281Thyroxine (T4) in serum, Decreased
AOP:193Dual oxidase (DUOX) inhibition leading to altered amphibian metamorphosisUnclassified-African clawed frog0.25KE:281Thyroxine (T4) in serum, Decreased
AOP:194Hepatic nuclear receptor activation leading to altered amphibian metamorphosisUnclassified-African clawed frog0.33KE:295Induction, Upregulation of glucuronyltransferase activity
KE:281Thyroxine (T4) in serum, Decreased
AOP:288Inhibition of 17α-hydrolase/C 10,20-lyase (Cyp17A1) activity leads to birth reproductive defects (cryptorchidism) in male (mammals)Endocrine system disease-Human, Rat0.12KE:1690Decrease, circulating testosterone levels
AOP:289Inhibition of 5α-reductase leading to impaired fecundity in female fishUnclassifiedUnder DevelopmentFish0.17KE:219Reduction, Plasma 17beta-estradiol concentrations
AOP:310Embryonic Activation of the AHR leading to Reproductive failure, via epigenetic down-regulation of GnRHRUnclassified-Zebrafish0.17KE:219Reduction, Plasma 17beta-estradiol concentrations
KE:3Reduction, 17beta-estradiol synthesis by ovarian granulosa cells
AOP:321Reduced environmental pH leading to thinner shells in Mytilus edulisUnclassified-0.18KE:592Reduced, survival
KE:10042Abnormal development
AOP:346Aromatase inhibition leads to male-biased sex ratio via impacts on gonad differentiationUnclassifiedWPHA/WNT EndorsedZebrafish, Oreochromis niloticus, Chinook salmon, Fathead minnow, European sea bass0.2KE:1789Reduction, 17beta-estradiol synthesis by the undifferentiated gonad
AOP:348Inhibition of 11β-Hydroxysteroid Dehydrogenase leading to decreased population trajectoryUnclassifiedUnder DevelopmentFish0.2KE:406decreased, Fertility
AOP:349Inhibition of 11β-hydroxylase leading to decresed population trajectoryUnclassifiedUnder DevelopmentFish0.12KE:406decreased, Fertility
AOP:366Competitive binding to thyroid hormone carrier protein transthyretin (TTR) leading to altered amphibian metamorphosisUnclassified-0.14KE:281Thyroxine (T4) in serum, Decreased
AOP:367Competitive binding to thyroid hormone carrier protein thyroid binding globulin (TBG) leading to altered amphibian metamorphosisUnclassified-0.14KE:281Thyroxine (T4) in serum, Decreased
AOP:457Succinate dehydrogenase inhibition leading to increased insulin resistance through reduction in circulating thyroxineInherited metabolic disorder-Human0.17KE:281Thyroxine (T4) in serum, Decreased
AOP:458AhR activation in the liver leading to Subsequent Adverse Neurodevelopmental Outcomes in MammalsCognitive disorder-Rat, Mouse, Monkey, Human0.25KE:295Induction, Upregulation of glucuronyltransferase activity
KE:281Thyroxine (T4) in serum, Decreased
AOP:459AhR activation in the thyroid leading to Subsequent Adverse Neurodevelopmental Outcomes in MammalsCognitive disorder-Human, Mouse, Rat0.22KE:281Thyroxine (T4) in serum, Decreased
KE:850Induction, CYP1A2/CYP1A5
AOP:465Alcohol dehydrogenase leading to reproductive dysfunctionUnclassified-0.12KE:2050Increase, developmental abnormalities
AOP:467Knickkopf leading to mortalityUnclassified-0.11KE:2050Increase, developmental abnormalities
AOP:496Androgen receptor agonism leading to reproduction dysfunction (in zebrafish)Unclassified-Zebrafish0.2KE:219Reduction, Plasma 17beta-estradiol concentrations
KE:1690Decrease, circulating testosterone levels
AOP:510Demethylation of PPAR promotor leading to vascular disrupting effectsCardiovascular system disease-Human, Mouse, Zebrafish0.1KE:2165Activation of PPAR
AOP:540Oxidative Stress in the Fish Ovary Leads to Reproductive Impairment via Reduced Vitellogenin ProductionUnclassified-0.11KE:3Reduction, 17beta-estradiol synthesis by ovarian granulosa cells
AOP:549Aromatase inhibition leads to reproductive toxicity (including growth and developmental toxicity) in adult female zebrafishUnclassified-0.12KE:219Reduction, Plasma 17beta-estradiol concentrations

Associated AOPs with Level of Relevance - 2 AOPs with at least 1 AO associated with chemical, and no associated MIE

AOP Identifier AOP Title AO Classification OECD Status Taxonomic applicability Coverage Score The fraction of KEs within the AOP, that are mapped to the chemical-associated toxicological endpoints. KE Identifier KE Name
AOP:7Aromatase (Cyp19a1) reduction leading to impaired fertility in adult femaleReproductive system disease; Endocrine system disease; Reproductive system diseaseUnder ReviewRat, Mouse, Human0.6KE:219Reduction, Plasma 17beta-estradiol concentrations
KE:3Reduction, 17beta-estradiol synthesis by ovarian granulosa cells
KE:406decreased, Fertility
AOP:21Aryl hydrocarbon receptor activation leading to early life stage mortality, via increased COX-2UnclassifiedWPHA/WNT EndorsedZebrafish, Medaka, Gallus gallus0.2KE:947Increase, Early Life Stage Mortality
AOP:64Glucocorticoid Receptor (GR) Mediated Adult Leydig Cell Dysfunction Leading to Decreased Male FertilityReproductive system disease-Rattus norvegicus0.43KE:520Decreased sperm quantity or quality in the adult, Decreased fertility
KE:1690Decrease, circulating testosterone levels
KE:406decreased, Fertility
AOP:91Sodium channel inhibition leading to reduced survivalUnclassified-Medaka, Gammarus pulex, Hydra0.17KE:592Reduced, survival
AOP:95Ether-a-go-go (ERG) voltage-gated potassium channel inhibition leading to reduced survivalUnclassified-0.17KE:592Reduced, survival
AOP:99Histamine (H2) receptor antagonism leading to reduced survivalUnclassified-Zebrafish0.14KE:636Decreased, survival
AOP:124HMG-CoA reductase inhibition leading to decreased fertilityReproductive system disease-Rattus rattus0.33KE:1690Decrease, circulating testosterone levels
KE:330Decrease, Fertility
AOP:150Aryl hydrocarbon receptor activation leading to early life stage mortality, via reduced VEGFUnclassifiedWPHA/WNT EndorsedChicken, Zebrafish, Mouse, Rattus norvegicus0.14KE:947Increase, Early Life Stage Mortality
AOP:212Histone deacetylase inhibition leading to testicular atrophyReproductive system diseaseWPHA/WNT EndorsedRat, Human, Mouse0.17KE:1506Testicular atrophy
AOP:242Inhibition of lysyl oxidase leading to enhanced chronic fish toxicityUnclassified-Fish0.12KE:636Decreased, survival
AOP:269Elevated ATP demand for detoxification and repair mechanisms leading to impaired growth and developmentUnclassified-0.17KE:10013Impaired growth and development
AOP:322Alkylation of DNA leading to reduced sperm countReproductive system disease-0.2KE:1757Reduce, Sperm count
AOP:345Androgen receptor (AR) antagonism leading to decreased fertility in femalesEndocrine system disease; Reproductive system disease; Reproductive system diseaseUnder DevelopmentMammals0.17KE:406decreased, Fertility
AOP:398Decreased ALDH1A (RALDH) activity leading to decreased fertility via disrupted meiotic initiation of fetal oogoniaReproductive system diseaseUnder DevelopmentMouse, Rat, Human0.17KE:406decreased, Fertility
AOP:455Aryl hydrocarbon receptor activation leading to early life stage mortality via sox9 repression induced impeded craniofacial developmentMusculoskeletal system diseaseUnder ReviewZebrafish, Mouse, Human, Sebastiscus marmoratus, Salmo salar, Chicken0.17KE:947Increase, Early Life Stage Mortality
AOP:456Aryl hydrocarbon receptor activation leading to early life stage mortality via sox9 repression induced cardiovascular toxicityUnclassifiedUnder ReviewZebrafish, Mouse, Human, Chicken0.17KE:947Increase, Early Life Stage Mortality
AOP:492Glutathione conjugation leading to reproductive dysfunction via oxidative stressReproductive system disease-Mammals, Fish0.2KE:406decreased, Fertility
AOP:521Essential element imbalance leads to reproductive failure via oxidative stressUnclassified-Murinae gen. sp.0.29KE:2206Increased, histomorphological alteration of testis
KE:2147Decreased, Viable Offspring

Associated AOPs with Level of Relevance - 3 AOPs with at least 1 MIE associated with chemical, and no associated AO

AOP Identifier AOP Title AO Classification OECD Status Taxonomic applicability Coverage Score The fraction of KEs within the AOP, that are mapped to the chemical-associated toxicological endpoints. KE Identifier KE Name
AOP:37PPARα activation leading to hepatocellular adenomas and carcinomas in rodentsCancer; Gastrointestinal system diseaseUnder DevelopmentMouse, Rat0.2KE:227Activation, PPARα
AOP:42Inhibition of Thyroperoxidase and Subsequent Adverse Neurodevelopmental Outcomes in MammalsCognitive disorderWPHA/WNT EndorsedHuman, Rat, Mouse0.25KE:279Thyroperoxidase, Inhibition
KE:281Thyroxine (T4) in serum, Decreased
AOP:119Inhibition of thyroid peroxidase leading to follicular cell adenomas and carcinomas (in rat and mouse)Cancer; Endocrine system disease-Rattus norvegicus, Mus musculus0.43KE:279Thyroperoxidase, Inhibition
KE:281Thyroxine (T4) in serum, Decreased
KE:1023Increased, Thyroid-stimulating hormone (TSH)
AOP:159Thyroperoxidase inhibition leading to increased mortality via reduced anterior swim bladder inflationUnclassifiedWPHA/WNT EndorsedZebrafish, Fathead minnow0.38KE:279Thyroperoxidase, Inhibition
KE:1003Decreased, Triiodothyronine (T3)
KE:281Thyroxine (T4) in serum, Decreased
AOP:175Thyroperoxidase inhibition leading to altered amphibian metamorphosisUnclassified-African clawed frog0.5KE:279Thyroperoxidase, Inhibition
KE:281Thyroxine (T4) in serum, Decreased
AOP:271Inhibition of thyroid peroxidase leading to impaired fertility in fishUnclassifiedUnder DevelopmentFish0.4KE:279Thyroperoxidase, Inhibition
KE:219Reduction, Plasma 17beta-estradiol concentrations
AOP:363Thyroperoxidase inhibition leading to altered visual function via altered retinal layer structureUnclassifiedUnder ReviewZebrafish0.38KE:279Thyroperoxidase, Inhibition
KE:1003Decreased, Triiodothyronine (T3)
KE:281Thyroxine (T4) in serum, Decreased
AOP:364Thyroperoxidase inhibition leading to altered visual function via decreased eye sizeUnclassifiedUnder Development0.38KE:279Thyroperoxidase, Inhibition
KE:1003Decreased, Triiodothyronine (T3)
KE:281Thyroxine (T4) in serum, Decreased
AOP:365Thyroperoxidase inhibition leading to altered visual function via altered photoreceptor patterningUnclassifiedUnder Development0.38KE:279Thyroperoxidase, Inhibition
KE:1003Decreased, Triiodothyronine (T3)
KE:281Thyroxine (T4) in serum, Decreased
AOP:392Decreased fibrinolysis and activated bradykinin system leading to hyperinflammationUnclassifiedUnder DevelopmentHumans0.2KE:1866Fibrinolysis, decreased

Associated AOPs with Level of Relevance - 5 AOPs with at least 1 MIE and AO associated with chemical, and there exists a directed path between that MIE and AO

AOP Identifier AOP Title AO Classification OECD Status Taxonomic applicability Coverage Score The fraction of KEs within the AOP, that are mapped to the chemical-associated toxicological endpoints. KE Identifier KE Name
AOP:18PPARα activation in utero leading to impaired fertility in malesReproductive system diseaseUnder ReviewHuman, Rat, Mouse0.38KE:227Activation, PPARα
KE:1690Decrease, circulating testosterone levels
KE:406decreased, Fertility
AOP:323PPARalpha Agonism Leading to Decreased Viable Offspring via Decreased 11-KetotestosteroneUnclassified-Teleost fish0.33KE:227Activation, PPARα
KE:2147Decreased, Viable Offspring

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We have built a comprehensive resource which compiles potential endocrine disrupting chemicals (EDCs) based on the observed adverse effects or endocrine-mediated endpoints in published experiments on humans or rodents to support basic research. We are not responsible for any errors or omissions in the published research articles or supporting literature on potential EDCs compiled in this resource. Users are advised to exercise their own judgement on the weight of evidence for potential EDCs compiled in this resource. Importantly, our sole goal to build this resource on potential EDCs is to enable future basic research towards better understanding of the systems-level perturbations upon chemical exposure rather than influencing regulatory advice on chemical use.