Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

34 results about "Perturbateurs endocriniens" patented technology

Histoire. Les effets de perturbateurs endocriniens sont observés et dénoncés au moins depuis les années 1970, avec des enjeux de santé reproductive et donc potentiellement de survie à long terme pour diverses espèces animales [8] et pour l'espèce humaine [9].. Dès les années 1950, des études faites dans de nombreux pays industrialisés montrent une diminution de la fertilité masculine.

Fractionation method of endocrine disrupter in environmental water body

The invention discloses a fractionation method of an endocrine disrupter in an environmental water body, and belongs to the technical field of water body pollutant analysis. The fractionation method of the endocrine disrupter in the environmental water body comprises the following steps: S1, enriching and concentrating a water sample to obtain a to-be-fractionated liquid; s2, fractionating the to-be-fractionated liquid by adopting an analytical liquid chromatography system and a C18 semi-preparative chromatographic column to obtain fractions. According to the method, high-resolution synchronous fractionation of the endocrine disrupter in a wide polarity range (Log Kw:-0.19-6.62) is realized, the defects of low fractionation efficiency and high solvent consumption of the traditional semi-preparative liquid chromatography are effectively overcome by optimizing a gradient program of an analytical liquid chromatography system, the time and economic cost are saved, and the method is suitable for industrial production. And the fraction can be directly compatible with biological activity test after salting-out-extraction treatment.
Owner:GUANGDONG UNIV OF TECH

A method for preparing a trace 10-component solution standard of endocrine disruptor phenols

PendingCN122149958APreparing sample for investigationPerturbateurs endocriniensEndocrine disruptor
The application discloses a preparation method of trace 10-component phenolic endocrine disruptor solution standard substance, which comprises the following steps: accurately weighing 10 kinds of high-purity phenolic compounds with accurate values, and dissolving the phenolic compounds in a mass spectrometry grade methanol solvent in a nitrogen atmosphere operation box to obtain a dissolved phenolic standard; filling nitrogen into a volumetric flask, pouring the dissolved phenolic standard into the volumetric flask, and dissolving and constant volume of the dissolved phenolic standard in a constant-temperature tank at 20.0 DEG C + / - 0.5 DEG C for 20 min, and then using the mass spectrometry grade methanol solvent to dissolve and constant volume to obtain a constant-volume phenolic solution; gradually diluting the constant-volume phenolic solution to 1 ug / L by using the mass spectrometry grade methanol solvent to obtain a diluted phenolic solution; pre-filling argon into a brown glass ampoule in a nitrogen atmosphere operation box, and then pouring the diluted phenolic solution into the brown glass ampoule, filling argon above the ampoule containing the solution, and fusion sealing the ampoule for refrigeration preservation.
Owner:SICHUAN ZHONGSHI STANDARD TECH CO LTD

Model for inducing benign prostatic hyperplasia of rats by bisphenol A and construction method

PendingCN121890564ACompounds screening/testingHydroxy compound active ingredientsPerturbateurs endocriniensEndocrine disruptor
The invention provides a bisphenol A induced rat benign prostatic hyperplasia model and a construction method, and relates to the technical field of animal models. The method comprises the following steps: S1, selecting rats which are 8-9 months old and 9-10 weeks old, and adaptively feeding the rats in a suitable environment for 7 days or more; s2, jointly applying high-fat feed and bisphenol A to the adaptively fed rats to induce benign prostatic hyperplasia; the induction time is 60-80 days, and performing biological index evaluation after the induction is completed. The exposure level of low-dose BPA adopted by the invention is closer to the actual environment exposure level of people, and a main exposure way is simulated through oral gavage. The model constructed by the method can better simulate the real process of chronic and low-dose exposure pathopoiesis of the environmental endocrine disrupter in etiology, and provides an experimental tool with more practical significance for related risk evaluation.
Owner:SICHUAN UNIV

Environmental endocrine disrupter content detection device

ActiveCN223597620UChemical analysis using titrationPerturbateurs endocriniensEndocrine disruptor
The utility model discloses an environmental endocrine disrupter content detection device which comprises a base, a stand column is arranged on the top face of the base, a supporting plate is fixedly arranged at the end, away from the base, of the stand column, and the environmental endocrine disrupter content detection device further comprises a detection mechanism and a control mechanism, a plurality of positioning cylinders are arranged on the top surface of the positioning plate, and detection cylinders for detecting environmental endocrine disruptors of liquid medicines with different contents are placed in the positioning cylinders; the temporary storage mechanism is fixedly arranged above the supporting plate, the temporary storage mechanism comprises a temporary storage box for storing an environmental endocrine disrupter solution, one side of the temporary storage box fixedly communicates with a connecting hose, the end, away from the temporary storage box, of the connecting hose fixedly communicates with a hollow cylinder, and a liquid dropping head is integrally arranged at the liquid outlet end of the hollow cylinder. The environmental endocrine disrupter content detection device is convenient for detecting the environmental endocrine disrupter content, and is accurate in detection result and high in working efficiency.
Owner:TYCO TESTING TECH JIANGSU CO LTD

A method for predicting the quantitative activity of endocrine disruptors

This application discloses a method for predicting the quantitative activity of endocrine disruptors, relating to the field of virtual screening of endocrine disruptors. The method includes: acquiring in vitro experimental data of nuclear receptors and removing duplicate data, as well as removing compound sets that do not contain the simplified molecular linear input canonical (SMILES) representation; using a molecular fingerprinting method to extract the primary, secondary, and tertiary structural features of the compounds. For each compound cluster, a quantitative prediction model based on machine learning or quantitative read-across is constructed to predict the quantitative activity value of the compound. Addressing the low efficiency of existing methods for predicting the quantitative activity of endocrine disruptors, this application extracts multi-level structural features of the compounds and constructs corresponding quantitative prediction models for compound structural clusters of different sizes. Through molecular docking and molecular dynamics simulations, the interaction mechanism between endocrine disruptors and nuclear receptors is studied from a structural biology perspective, thus improving efficiency.
Owner:NANJING UNIV

An endocrine disruptor prediction method based on harmful outcome path network

ActiveCN119811528BChemical property predictionBiological modelsPerturbateurs endocriniensData set
The application discloses a method for predicting endocrine disruptors based on a harmful outcome path network, and belongs to the endocrine field, and comprises the following steps: acquiring experimental activity data containing qualitative data and quantitative data according to a pre-constructed harmful outcome path network; acquiring endocrine disruptor list data as a second data set; constructing a target qualitative prediction model according to the qualitative data; predicting target activity data of the second data set by using the target qualitative prediction model to obtain a target activity data set; constructing an endocrine disruptor effect qualitative prediction model by using the target activity data set; constructing a target quantitative prediction model according to the quantitative data; predicting whether a to-be-tested compound has an endocrine disruptor effect by using the endocrine disruptor effect qualitative prediction model; and predicting the corresponding target quantitative activity of the compound with the endocrine disruptor effect by using the target quantitative prediction model to obtain a quantitative harmful outcome path. The application realizes qualitative identification and quantitative classification of endocrine disruptors EDCs.
Owner:NANJING UNIV

Endocrine disruptor identification method and device based on graph neural network, medium and equipment

PendingCN122330340APerturbateurs endocriniensData set
This application discloses a method, apparatus, medium, and device for identifying endocrine disruptors based on graph neural networks, relating to the field of biocommunication technology. Its main objective is to address the problem of low identification efficiency in existing endocrine disruptor technologies. The method includes: acquiring secondary mass spectrometry data of the organ to be tested; constructing a graph structure representation of the secondary mass spectrometry data, and predicting the graph structure representation based on a pre-trained disruptor prediction model to obtain predicted disruptor values. The disruptor prediction model is constructed based on a graph neural network, and the training sample dataset for the disruptor prediction model includes corresponding graph structure samples generated based on secondary mass spectrometry samples and interference effect information; generating an endocrine disruptor identification result based on a comparison between the predicted disruptor values ​​and a classification threshold, wherein the classification threshold is obtained based on classification evaluation indicators.
Owner:HANGZHOU INST FOR ADVANCED STUDY UCAS

Hydrogel preparation, preparation method and application in repairing sperm injury

ActiveCN120788985APeptide/protein ingredientsAerosol deliveryEscherichia coliPerturbateurs endocriniens
The invention relates to the technical field of hydrogel preparations, and discloses a hydrogel preparation, a preparation method and application in repairing sperm injury. The method comprises the following steps: step 1, constructing recombinant plasmids; step 2, plasmid transformation; step 3, protein purification; step 4, preparing the SKAP2 protein wrapped by the mEXOs; step 5, preparing an SKAP2 hydrogel preparation; according to the invention, the SKAP2 protein is expressed through prokaryotic escherichia coli, the milk exosome is extracted, then the SKAP2 protein is wrapped in the milk exosome, and then the exosome containing the SKAP2 protein is fused into the hydrogel preparation, so that the sperm motility of a mouse with asthenospermia can be remarkably improved in a skin smearing manner; comprising the effect of improving sperm motility decline of asthenospermia caused by heavy metal lead, organic endocrine disrupter phthalate and high temperature and aging, and the problem that no effective repairing preparation for asthenospermia exists in the prior art is solved.
Owner:THE OBSTETRICS & GYNECOLOGY HOSPITAL OF FUDAN UNIV

Hydrothermal carbon-based composite material for adsorbing bisphenol A endocrine disrupters as well as preparation method and application of hydrothermal carbon-based composite material

PendingCN121648898AWater treatment parameter controlOther chemical processesPerturbateurs endocriniensSorbent
The invention relates to a hydrothermal carbon-based composite material for adsorbing bisphenol A endocrine disruptors as well as a preparation method and application of the hydrothermal carbon-based composite material. Comprising the following steps: mixing rice husk hydrothermal carbon and mesoporous silica foam according to a mass ratio of 1: (1-5) to obtain a composite carrier; the preparation method comprises the following steps: dissolving polyethyleneimine in a solvent according to a mass ratio of 1: (0.4-0.6), uniformly stirring to obtain an impregnation liquid, impregnating a composite carrier in the impregnation liquid, stirring, and evaporating the solvent to obtain a composite adsorbent; the preparation method of the hydrothermal carbon-based composite material for adsorbing the bisphenol A endocrine disrupter solves the problems that in the prior art, the specific surface area of single hydrothermal carbon is generally limited, the pore structure development is incomplete, and the adsorption capacity and the mass transfer rate of the single hydrothermal carbon are limited.
Owner:XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI

A hydrogel preparation, a preparation method and application in repairing sperm damage

ActiveCN120788985BPeptide/protein ingredientsAerosol deliveryEscherichia coliPerturbateurs endocriniens
The application relates to the technical field of hydrogel preparations, and discloses a hydrogel preparation, a preparation method and application in repairing sperm damage. The method comprises the following steps: step one, constructing a recombinant plasmid; step two, plasmid transformation; step three, protein purification; step four, preparing mEXOs wrapped SKAP2 proteins; and step five, preparing a SKAP2 hydrogel preparation. In the application, SKAP2 proteins are expressed by means of a prokaryote Escherichia coli, milk exosomes are extracted, the SKAP2 proteins are then wrapped into the milk exosomes, and the exosomes containing the SKAP2 proteins are then fused into a hydrogel preparation. The sperm activity of asthenospermia mice can be significantly improved through skin smearing, including improving the sperm activity reduction effect of asthenospermia caused by heavy metal lead, organic endocrine disruptors phthalate, high temperature and aging, and the problem that there is no effective repair preparation for asthenospermia in the prior art is solved.
Owner:THE OBSTETRICS & GYNECOLOGY HOSPITAL OF FUDAN UNIV

Endocrine disrupter identification method and system

PendingCN121583375AChemical property predictionBiological modelsPerturbateurs endocriniensPhysiology
The invention discloses an endocrine disrupter identification method and system, and the method comprises the steps: carrying out the multi-dimensional feature extraction of a to-be-identified target compound, and obtaining the features of the target compound; respectively inputting the target compound characteristics into an activity prediction model corresponding to each prediction end point type to obtain an activity probability prediction result corresponding to each prediction end point; generating a recognition result of the target compound corresponding to each activity probability prediction result; according to the endocrine disrupter identification method, the identification efficiency of the endocrine disrupter is greatly improved.
Owner:SUN YAT SEN UNIV

Detection method for simultaneously detecting multiple endocrine disrupters

PendingCN121595742AComponent separationPerturbateurs endocriniensLiquid chromatography mass spectroscopy
The invention provides a detection method for simultaneously detecting multiple endocrine disrupters, which comprises the following steps: grinding tissue, homogenizing, adding an internal standard, extracting with three solvents: dichloromethane and methyl tert-butyl ether, an ethyl acetate-normal hexane mixed solution, acetonitrile and sodium chloride, combining and collecting the solutions to obtain a comprehensive extracting solution, concentrating and dissolving, degreasing, and drying to obtain the endocrine disrupters. Finally, a liquid chromatograph-mass spectrometer is used for detection, and efficient extraction and accurate analysis of the multiple endocrine disruptors in the tissue are achieved. According to the detection method, multiple organic solvents with different properties are adopted for extraction, detection of multiple endocrine disrupters can be synchronously achieved, the concentration level of the endocrine disrupters in the tissue sample can be directly measured, freeze drying treatment is not needed, operation is easy, and sensitivity and recovery rate are high.
Owner:BEIJING NORMAL UNIV AT ZHUHAI

Method for improving stress tolerance of microalgae endocrine disrupter by utilizing phycobacterium

The invention relates to the field of microorganisms, and discloses a method for improving the stress tolerance of microalgae endocrine disruptors by utilizing phycobacterium, which comprises the following steps: co-culturing phycobacterium and microalgae; the endocrine disrupter is nonyl phenol; the phycobacterium is rosette-shaped rhizobium and / or brevundimonas vesicula. According to the invention, the effect of improving the stress tolerance of the endocrine disrupter (nonyl phenol) of the microalgae by part of interalgal bacteria of the microalgae is found for the first time. By co-culturing the algae and the microalgae, the survival and growth capabilities of the microalgae under the stress of nonyl phenol can be effectively improved, so that the tolerance and removal capability of the microalgae to high-concentration endocrine disrupter polluted wastewater are expected to be improved in an algae-bacteria co-culture manner.
Owner:ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES

A method of enhancing adsorption of intermediate species to improve removal of endocrine disrupting compounds from wastewater

ActiveCN117658305BPhysical/chemical process catalystsWater contaminantsNano catalystEndocrine disrupting compound
The present application relates to wastewater treatment technical field, specifically to a kind of method for improving endocrine disruptor removal in wastewater by strengthening intermediate species adsorption, it includes the following steps: providing Ce-Co3S 4‑x Nano catalyst and peroxymonosulfate;Ce-Co3S 4‑x Nano catalyst and peroxymonosulfate are added to the wastewater containing endocrine disruptor to be treated, and Fenton-like catalytic reaction is carried out under stirring condition, and endocrine disruptor in wastewater to be treated is degraded.The method can efficiently and stably remove endocrine disruptor in wastewater, and can achieve almost 99.9% removal rate of bisphenol A within 9min, and 99.6% removal rate of pentachloronitrobenzene within 12min.
Owner:TONGJI UNIV

Preparation and application of carbon-modified vanadium disulfide nano material for oxidative removal of endocrine disrupters in water body

PendingCN121513922AWater contaminantsCatalyst activation/preparationVanadium disulfidePerturbateurs endocriniens
The invention discloses a preparation method of a carbon-modified vanadium disulfide nano material for oxidative removal of endocrine disrupters in a water body and application of the carbon-modified vanadium disulfide nano material to activation of persulfate. The preparation method comprises the following steps: firstly, using ammonium metavanadate as a vanadium source, thioacetamide as a sulfur source and L-ascorbic acid as a carbon source, and adjusting the pH value by using ammonia water; the molar ratio of ammonium metavanadate to thioacetamide to L-ascorbic acid is 1: 5: (1-5), and 2-4 mL of ammonia water is prepared into a precursor; the precursor is subjected to water bath ultrasonic treatment and then subjected to a hydrothermal reaction, washing and vacuum drying are conducted after the reaction is completed, and then the powdery carbon-modified vanadium disulfide is obtained. Compared with a single vanadium disulfide metal 1T phase, the carbon-modified vanadium disulfide nano material for oxidative removal of endocrine disrupters in a water body, prepared by the preparation method disclosed by the invention, is higher in composition, richer in microporous structure, higher in persulfate catalytic activation capability and reusability and lower in toxicity; under the same reaction condition, the degradation reaction rate constant is 4-79 times higher than that of common metal sulfide.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

A method for detecting exposure concentration of an environmental endocrine disruptor in human body

The present application relates to the technical field of detection, in particular to a method for detecting the exposure concentration of environmental endocrine disruptors in human body, comprising obtaining sample data, calculating sample concentration verification index; generating sample concentration step state signal according to sample concentration verification index; obtaining temperature data, calculating sample temperature evaluation index; generating sample temperature state signal according to sample temperature evaluation index; obtaining sample temperature data and sample refractive index data, calculating temperature-refraction evaluation index; generating temperature-refraction correlation signal according to temperature-refraction evaluation index; calculating stirring speed adjustment value according to temperature difference degree value; the present application analyzes the refractive index of sample and the temperature in the sample concentration process, adjusts the stirring speed in the sample concentration process, reduces the influence of sample processing process on the detection result, thereby improving the accuracy of the detection result of the exposure concentration of environmental endocrine disruptors in human body.
Owner:CANCER HOSPITAL AFFILIATED TO SHANTOU UNIV SCHOOL OF MEDICINE

Fluorescent sensor for detecting endocrine disruption activity in sewage and application

ActiveCN122084916ARapid Quantitative DetectionImprove responseBiological testingFluorescence/phosphorescenceFluoProbesPerturbateurs endocriniens
The invention relates to the technical field of biological monitoring, in particular to a fluorescence sensor for detecting endocrine disruption activity in sewage and application. A Y-type polypeptide containing an anchoring region, a hinge region and an antifouling region is creatively designed as a structural skeleton, and the tail ends of a main chain and a branch chain are respectively subjected to directional modification to prepare the multifunctional ligand-polypeptide-dye conjugate; an optical biosensing chip, namely a ligand-polypeptide-dye conjugate functionalized biosensing chip which is high in reaction efficiency, strong in anti-pollution characteristic and capable of being stably regenerated, is constructed by adopting a covalent coupling method, and then the quantum dot-nuclear receptor fluorescent probe which is high in sensitivity and adjustable in emission spectrum is prepared. The ratio fluorescence biosensing principle based on fluorescence resonance energy transfer is provided, rapid quantitative detection of the endocrine disruptors in sewage is achieved, and the endocrine disruptors have broad-spectrum specific recognition capacity on a certain type of endocrine disruptors.
Owner:SHENZHEN UNIV

Biomarker for detecting EDC-induced glutamic acid synaptic dysfunction and detection method thereof

The invention relates to the technical field of environmental endocrine disruptors, and discloses a biomarker for detecting EDC-induced glutamic acid synaptic dysfunction and a detection method thereof. The biomarker combination comprises molecules selected from at least one group of the following: presynaptic end function related proteins: plasma or cerebrospinal fluid (CSF) exosome levels including but not limited to synapsin-1 and vesicular glutamate transporter 1 (VGLUT1); proteins related to post-synaptic density and NMDA receptor functions include, but are not limited to, post-synaptic density protein 95 (PSD95), the phosphorylation level of a GluN1 subunit or soluble fragments thereof in CSF; the invention relates to astrocyte-neuron coupling related molecules. According to the invention, a multi-dimensional biomarker combination containing a presynaptic terminal function, a post-synaptic density and receptor function, astrocyte-neuron coupling and endoplasmic reticulum stress and calcium homeostasis is constructed, so that systemic evaluation of EDC-induced glutamic acid synaptic dysfunction is realized.
Owner:赖茜

A system and method for integrated analysis of multi-omics data of environmental endocrine disruptors

This application belongs to the field of biological science research and big data mining technology, and discloses a system and method for integrating and analyzing multi-omics data of environmental endocrine disruptors. Through data collection, data storage, integrated analysis and visualization, a dedicated metadata framework for environmental endocrine disruptors is constructed, and a full-dimensional collection system covering chemical data and multi-omics data is established to realize multimodal data integration analysis and visualization functions, thereby promoting the prediction and query analysis of EDCs toxicity mechanisms. This application supports automatic conversion and structured storage of multiple data formats, thereby significantly improving data traceability efficiency and shortening the data preprocessing cycle.
Owner:INNER MONGOLIA UNIV OF SCI & TECH

Method and system for predicting and tracing concentration of endocrine disrupter in lake and reservoir

PendingCN121922233AMolecular entity identificationBiological modelsPerturbateurs endocriniensData set
The invention discloses a lake and reservoir endocrine disrupter concentration prediction and tracing method and system, and relates to the technical field of environment monitoring and pollution control, the method comprises the following steps: collecting and fusing multi-source heterogeneous monitoring data of a basin-lake and reservoir system, and constructing a standardized spatio-temporal data set; based on a hydrodynamic force and pollutant migration and transformation physical mechanism, key spatio-temporal features are extracted from the fusion data, and a high-dimensional feature tensor is constructed; constructing and training a deep neural network model fusing causal discovery and physical constraint, and predicting spatial and temporal distribution of the concentration of the endocrine disrupter in the lake and reservoir by using a feature tensor; analyzing the dynamic contribution degree of different pollution sources to the concentration of the endocrine disrupter in the target area to realize pollution source tracing; and carrying out integrated visualization on a concentration prediction result and pollution source contribution degree information, and generating graded early warning signals and targeted treatment decision suggestions. According to the method, the accuracy and robustness of lake and reservoir endocrine disrupter concentration prediction can be remarkably improved, and pollution traceability is realized.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION

Method for screening and detecting endocrine disrupter-induced neurotoxicity biomarker

PendingCN121687202AMaterial analysis by electric/magnetic meansBiostatisticsPerturbateurs endocriniensMetabolome
The invention belongs to the technical field of neurotoxicology and multi-omics detection, and particularly relates to an endocrine disrupter induced neurotoxicity biomarker screening and detection method which comprises the following steps: (1) establishing a neurotoxicity animal model; (2) verifying the neurotoxicity model; (3) performing brain tissue transcriptome sequencing and neural pathway analysis and / or performing brain tissue metabolome sequencing and differential metabolite analysis; (4) performing machine learning screening on the biomarkers; (5) carrying out interpretability analysis; (6) constructing a structural equation model; and (7) calculating a neurotoxicity comprehensive index NDTI, and carrying out significance detection and toxicity grade determination. By integrating behavior-neurotransmitter-hormone-inflammation-transcriptome / metabolome and other multi-level data, a reproducible neurotoxicity index is established, and graded quantitative evaluation of neurodevelopment damage caused by different endocrine disruptors and screening verification of key biomarkers are achieved.
Owner:NANJING AGRICULTURAL UNIVERSITY +1

Preparation method and application of MXene (at) ZIF-67 (at) AgNPs composite SERS (Surface Enhanced Raman Scattering) substrate

PendingCN121379176AMaterial nanotechnologyTransportation and packagingHeterojunctionPerturbateurs endocriniens
The invention relates to the technical field of Raman scattering, in particular to a preparation method and application of an MXene (at) ZIF-67 (at) AgNPs composite type SERS (Surface Enhanced Raman Scattering) substrate, and the preparation method comprises the following steps: step 1, synthesizing a photoelectric double-gain type MXene (at) ZIF-67 heterojunction based on an in-situ solvothermal method, and step 2, loading AgNPs on MXene (at) ZIF-67 (at) AgNPs under the action of an amido bond to assemble the MXene (at) ZIF-67 (at) AgNPs composite type SERS substrate. And step 3, constructing an endocrine disrupter detection platform. According to the prepared MXene (at) ZIF-67 (at) AgNPs composite SERS substrate, an electromagnetic field is synergistically enhanced through a conductive network of MXene and a surface plasma resonance effect of AgNPs, meanwhile, an endocrine disrupter is enriched through a porous structure of ZIF-67, an SERS'hot spot 'is formed, and the Raman signal intensity and the detection sensitivity of the endocrine disrupter are greatly improved. The stability of the composite substrate can be improved by the inhibition effect of ZIF-67 on surface oxidation of the MXene sheet layer. Experiments show that a detection method based on the substrate is simple and easy to implement, and trace endocrine disrupters under a complex background can be effectively detected.
Owner:NANTONG UNIV

Preparation and application of ferrovanadium bimetallic sulfide nano material for oxidative removal of endocrine disrupters in water body

PendingCN122006753AWater contaminantsCatalyst activation/preparationVanadium disulfidePerturbateurs endocriniens
The invention discloses a preparation method of a ferrovanadium bimetallic sulfide nano-material for oxidative removal of endocrine disrupters in a water body and application of the ferrovanadium bimetallic sulfide nano-material in advanced oxidation. The preparation method comprises the following steps: firstly, mixing a precursor solution of vanadium disulfide with a precursor solution of ferrous disulfide to obtain a precursor of ferrovanadium bimetallic sulfide; the precursor is subjected to water bath ultrasonic treatment and then subjected to a hydrothermal reaction, washing and vacuum drying are conducted after the reaction is completed, and then the powdery ferrovanadium bimetallic sulfide is obtained. Due to the synergistic effect between bimetals, the prepared iron-vanadium bimetallic sulfide nano material has stronger persulfate catalytic activation capacity than independent ferrous disulfide and vanadium disulfide, and the degradation reaction rate constant under the same reaction condition is 43 times or 2.1 times of that of independent iron or vanadium sulfide; and meanwhile, the ferrovanadium bimetallic sulfide has good pH adaptability and reusability.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Enrichment demand prediction method for endocrine disrupter based on machine learning model

PendingCN120564839AEnsemble learningBiostatisticsPerturbateurs endocriniensReceptor
The invention provides a method for predicting the enrichment demand of endocrine disrupters based on a machine learning model. The method comprises the following steps: acquiring molecular structure information of a target endocrine disrupter; calculating a molecular descriptor of the target endocrine disrupter; inputting the molecular descriptors into a trained machine learning model; whether the target endocrine disrupter can be effectively detected only after being enriched by adopting composite solid-phase extraction or not is output. The method has the beneficial effects that a nonlinear mapping model of the molecular descriptor and the enrichment efficiency of the endocrine disrupter is constructed, and the model robustness is ensured through SMOTE oversampling and Y randomization testing; combining recursive feature elimination, locking a key descriptor strongly related to an enrichment demand, and analyzing contribution of physicochemical properties to a prediction result by an SHAP value; the method can expand the combination of the enrichment demand predicted by the model and the activity data of 12 receptors in ToxCast, quantify the contribution gain of composite solid-phase extraction to the toxic effect, and strengthen the identification of toxic substances.
Owner:NANKAI UNIV

A method for detecting 99 kinds of non-chiral / chiral endocrine disruptors in urine based on double column combination

PendingCN122385803APerturbateurs endocriniensAchirality
This invention discloses a method for detecting 99 achiral / chiral endocrine disruptors in urine based on a dual-column coupled analysis system, belonging to the field of pollutant monitoring and analysis technology. The method involves a single pretreatment of the urine sample, including formic acid-acetonitrile extraction and ethylenediamine-N-propyl silica gel purification. A dual-column coupled analysis mode is then used, with a C18 column simultaneously quantifying the total concentration of 93 achiral endocrine disruptors (EDCs) and 6 chiral pesticides. The chiral column yields the R / S enantiomer signal intensity ratio, and the content of each enantiomer is calculated using a "total-proportional conversion" model. This invention achieves, for the first time, a unified detection system for achiral and chiral substances, eliminating the need for a single enantiomer standard; accurate quantification can be achieved using only racemic mixtures, effectively avoiding the direct quantitative bias of chiral columns. The method has a limit of quantification as low as 0.25 μg / L, is simple to operate, low in cost, and has good reproducibility, providing an efficient and reliable analytical tool for population exposure monitoring and chiral selective metabolism research.
Owner:CHONGQING UNIV

A method for preparing a matrix standard substance of 21-component phenolic endocrine disruptors in soil

PendingCN122149948APreparing sample for investigationSoil sciencePerturbateurs endocriniens
The application discloses a preparation method of a 21-component phenolic endocrine disruptor matrix standard substance in soil, which comprises the following steps: using high-standard farmland soil as an original matrix, performing acetone gradient extraction cleaning, ethanol gradient extraction cleaning and drying treatment on the original matrix soil to obtain clean matrix soil, and adding 21 kinds of phenolic compounds with accurate purity in a stepwise increasing manner to prepare the 21-component phenolic endocrine disruptor matrix standard substance in soil, wherein the corresponding concentration content can be accurately controlled in the range of 5 mg / kg to 10 mg / kg. The application provides a preparation process and a split process of the standard substance, the prepared standard substance is stable in composition, can be stored for 36 months under the conditions of light shielding and refrigeration, and the method is stable, reliable, and highly reproducible, and has a good popularization and application prospect.
Owner:SICHUAN ZHONGSHI STANDARD TECH CO LTD

Model for predicting endocrine disruptors by integrating pharmacological and toxicological profiles, method for constructing the same, and use thereof

ActiveCN116246718BMolecular designCheminformatics data warehousingPerturbateurs endocriniensMedicine
The present application provides a model for predicting endocrine disruptors by integrating pharmacology and toxicology profiles, and a construction method and application thereof. Specifically, the present application constructs an endocrine disruptor prediction model based on pharmacology and toxicology data and in combination with molecular fingerprints of substructures of compounds. The endocrine disruptor prediction model of the present application can more accurately and efficiently evaluate whether a to-be-tested compound is an endocrine disruptor. The present application also develops an endocrine disruptor prediction system based on the endocrine disruptor prediction model.
Owner:EAST CHINA UNIV OF SCI & TECH

A method for constructing an endocrine simplified transcriptome based on zebrafish embryo system and application thereof

ActiveCN116189762BBiostatisticsProteomicsAnimal sciencePerturbateurs endocriniens
The application discloses a method for constructing an endocrine simplified transcriptome based on a zebrafish embryo system and application thereof, and belongs to the field of high-throughput identification and screening of endocrine disruptors. By using the BORDA counting method, the evidence scores of three dimensions of gene centrality, information richness and redundancy degree are integrated, a specific endocrine interference simplified gene set is constructed, and the sequencing depth required for endocrine interference screening of each substance is greatly reduced, thereby reducing the test cost and improving the screening throughput of endocrine disruptors. The application provides help and support for rapid screening, mechanism analysis and harmful outcome prediction of new pollutants related to endocrine interference in China and the world.
Owner:NANJING UNIV

A method for promoting hydrogen production by a sludge and endocrine disruptor-pyrolysis coupling system

The present invention relates to a method for producing hydrogen by co-pyrolysis of sludge and endocrine disruptors, and belongs to the technical field of solid waste resource utilization. The method solves the problems of low efficiency and long cycle of anaerobic fermentation hydrogen production formed by conventional technologies, as well as the great environmental harm of endocrine disruptors, including step one, screening, concentrating and drying the sludge to obtain a dry sludge sample, step two, setting and adding 2,6-DCP sludge content of 10%, 20% and 30%, and step three, constructing and operating a system for producing hydrogen by co-pyrolysis of endocrine disruptors and sludge. The present invention adopts a rapid pyrolysis method and an electric heating method, and the sludge is pyrolyzed after the temperature is rapidly raised to the target temperature, which reduces the time and economic cost of the pyrolysis process and realizes the efficiency of sludge treatment.
Owner:HARBIN INST OF TECH +1

Application of Cristinia sp. As biomarker in preparation of product for diagnosing or monitoring neurodevelopment injury

The invention discloses application of Cristinia sp. As a biomarker in preparation of a product for diagnosing or monitoring neurodevelopment injury, and belongs to the technical field of microbial marker detection. The invention discloses an application of a protection marker of a progeny neurodevelopment injury caused by the exposure of a beneficial bacterium, namely, Cristinia sp. To an endocrine disrupter (EDCs) in a maternal environment. The invention further discloses an application of the protection marker of the progeny neurodevelopment injury caused by the exposure of the endocrine disrupter (EDCs) in the maternal environment. According to the application disclosed by the invention, the maternal prenatal EDCs exposure can obviously reduce the abundance of Cristseneleae bacteria in the intestinal tract of a filial generation by more than or equal to 99%, so that the protective effect of the Cristseneleae bacteria on neurodevelopment is weakened. By detecting the abundance decreasing level of the bacterium in excrement, the risk of neurodevelopmental disorder can be pre-warned, and the pre-warning accuracy rate reaches 85% or above.
Owner:NINGXIA MEDICAL UNIV