62 results about "Metabolomics data" patented technology

The present invention discloses a method for establishing a platform for analyzing and predicting the cognitive impairment of diabetes based on metabonomics data. According to the method, a high-performance liquid chromatography-mass spectrometry combined technology is adopted to separate and identify three groups of blood plasma of a healthy person, a diabetic patient who does not suffer from the cognitive impairment and a diabetic patient who suffers from the cognitive impairment; substances obtained by separation are respectively subjected to main component analysis and partial least square discriminant analysis by software; difference metabolites are determined and structures of the difference metabolites are identified; and the obvious difference metabolites are selected to form the platform for analyzing and predicting the cognitive impairment of diabetes. The cognitive impairment of diabetes can be timely analyzed and predicted according to the blood plasma of diabetic patients, can be timely observed and timely treated; the morbidity of the cognitive impairment of diabetes can be reduced; and a series of family and social problems caused by the cognitive impairment of diabetes are avoided.

The present invention generates a visual display of metabolomic data compiled by a database and associated processor. More particularly, the present invention provides a database for automatically receiving a three-dimensional spectrometry data set for a group of samples. The present invention also provides a processor device for manipulating the data sets to produce plots that are directly comparable to a plurality of characteristic plots corresponding to a plurality of selected metabolites. Furthermore, the processor device may generate a visual display indicating the presence of the selected metabolites across the group of samples. Thus, the present invention enables a user to analyze a series of complex data sets in a visual display that may indicate the presence of the selected metabolites across the group of samples. Furthermore, the visual display generated by embodiments of the present invention also expedites the subjective analysis of the spectrometry data sets.

The invention discloses a method for identifying the varieties of dendrobium huoshanense and dendrobium officinale based on metabonomics. The method comprises the following specific steps: (1) collecting dendrobium samples; (2) preparing dendrobium metabonomics samples; (3) detecting metabolites of the dendrobium samples; and (4) performing metabonomics data processing and analysis. The method provided by the invention has the following advantages: a lot of endogenous metabolite information of dendrobium is acquired by means of metabonomics; among the endogenous metabolites, the characteristic metabolites for identification of dendrobium huoshanense and dendrobium officinale are selected out, and then such two dendrobium varieties are distinguished from each other on the whole; the technical mode is advanced and the experimental result is reliable; and a good means is provided for dendrobium variety identification and dendrobium quality assessment.

The invention discloses a metabolism group method for distinguishing false positive mass spectra peak signals and quantificationally correcting mass spectra peak area. The invention provides a metabolism group study method; by the method, the biological source and non-biological source mass spectra peak signals can be effectively distinguished; the mass spectra peak signals are quantificationally evaluated; the mass spectra peaks with poor quantification performance are excluded; through QC sample dilution, a relative content correction model is built; the mass spectra peak area is corrected. The method has the maximum characteristics that the false positive mass spectra signals can be effectively eliminated, so that the metabolism group data becomes reliable; the real biomarkers can be favorably screened. The method can aim at plant, animal and microbe samples; the method can also be suitable for the mass-spectra-platform-based metabolism group analysis of GC-MS, LC-MS and CE-MS.

Disclosed herein are systems and methods for determining metabolic pathway dynamics using time series multiomics data. In one example, after receiving time series multiomics data comprising time-series metabolomics data associated a metabolic pathway and time-series proteomics data associated with the metabolic pathway, derivatives of the time series multiomics data can be determined. A machine learning model, representing a metabolic pathway dynamics model, can be trained using the time series multiomics data and the derivatives of the time series multiomics data, wherein the metabolic pathway dynamics model relates the time-series metabolomics data and time-series proteomics data to the derivatives of the time series multiomics data. The method can include simulating a virtual strain of the organism using the metabolic pathway dynamics model.

The invention discloses a method for analyzing a change rule of metabolites during fermentation of cephalosporium acremonium. The method comprises the following steps of: sampling and centrifuging before fermentation, during fermentation and after fermentation of cephalosporium acremonium generated by cephalosporin C, mixing phosphate buffer solution into sediment uniformly and centrifuging; quenching by using liquid nitrogen and grinding; adding powdered cells into methanol aqueous solution and butanedioic acid aqueous solution which is marked by deuterium and is used as an internal standard substance, and mixing uniformly; freezing and melting, centrifugally collecting the supernate and drying; performing oximation reaction; performing silanization reaction; determining components and relative content of a sample by using a gas chromatography-flying time mass spectrometer; analyzing principal components of preprocessed data by using software so as to analyze metabolism difference of the samples; performing cluster analysis on the preprocessed data by using the software so as to analyze the metabolism difference of metabolites among the samples; determining the nature of the metabolites to classify the metabolites; and analyzing the change rule of all types of the metabolites during the fermentation so as to comprehensively disclose metabolism information of the cephalosporium acremonium according to a large amount of metabolism physiome data.

The invention discloses a metabonomics data fusion optimization processing method. The method comprises the following steps of 1, converting metabonomics data of many patients of different sources into metabonomics data matrixes separately, 2, using an experiment design method to optimize a metabonomics data optimal preprocessing method with different sources separately, then through the optimized data optimal preprocessing method to process the metabonomics data matrixes in the step 1, and through the combination of a classification model, finding metabolite data with great contribution; 3, converting the metabolite data with the great contribution found in the step 2 into an important metabolic data matrix; 4, using the experiment design method to optimize the data optimal preprocessing method of the important metabolic data matrix, through the optimized data optimal preprocessing method, processing the important metabolic data matrix obtained in the step 3, and through the combination of the classification model, typing and classifying different patients. According to the metabonomics data fusion optimization processing method, the accuracy for typing and classifying diseases is improved, and a doctor can be assisted in more precisely laying out a personalized treatment scheme for a patient.

The present invention generates a visual display of metabolomic data compiled by a database and associated processor. More particularly, the present invention provides a database for automatically receiving a three-dimensional spectrometry data set for a group of samples. The present invention also provides a processor device for manipulating the data sets to produce plots that are directly comparable to a plurality of characteristic plots corresponding to a plurality of selected metabolites. Furthermore, the processor device may generate a visual display indicating the presence of the selected metabolites across the group of samples. Thus, the present invention enables a user to analyze a series of complex data sets in a visual display that may indicate the presence of the selected metabolites across the group of samples. Furthermore, the visual display generated by embodiments of the present invention also expedites the subjective analysis of the spectrometry data sets.

The invention relates to the field of biological analysis methods, and in particular to an analysis method of cecal metabolome in a broiler chicken. The change of metabolites and metabolic pathways ofcecal contents after the broiler chicken eats a yeast culture produced at different fermentation time is detected by jointly using a gas chromatography-mass spectrometry, thereby determining the influence of the yeast culture on the cecal metabolic regulation and the metabolites of the broiler chicken. Metabolomics data show that yeast culture is used for feeding the broiler chicken, the cecal differential metabolites mainly involve in amino acid metabolism and cholesterol metabolism, and participates in fat, vitamin digestion and absorption processes.

The invention provides a metabonomics network marker identification method based on a horizontal relation, belongs to the technical field of biological data analysis, and relates to a metabonomics data analysis method DNB-HC for screening potential network markers of complex diseases. The horizontal relation between the features is defined by using probability scores and is used for measuring thesize relation of the relative expression levels of a pair of metabolic features in the same sample, and the robustness of the horizontal relation is determined through a random disturbance test, so that the network connection edge is determined. Besides, the network markers are identified by using a difference network analysis method, and the screened network metabolic markers have relatively gooddistinguishing capability, so that a practical and effective data processing means can be provided for researching a disease occurrence and development mechanism and diagnosing diseases.

The invention discloses an evaluation method of food quality and application thereof. The evaluation method of the food quality is performed based on metabolomics and an artificial neural network model; the artificial neural network model comprises an input layer including multiple input parameters, wherein the input parameters contain a content parameter of at least one food metabolite, and the content parameter of the food metabolite is acquired based on the metabolomics data fusion; a hidden layer; and an output layer including multiple output parameters, wherein the output parameters contain at least one food sense organ score. Through the method disclosed by the invention, a metabolomics key index of the food is used as the input layer, and the sense organ score of the food is used asthe output layer so as to establish a quality evaluation model of the food based on the artificial neural network; the mathematical formula or weight is unnecessary, and the method is simple; the evaluation method is objective, comprehensive, scientific and easy to apply and popularize.

A system is provided for analyzing metabolomics data received from an analytical device across a group of samples. The system automatically receives a data matrix corresponding to each of the samples, wherein the data matrix includes rows corresponding to each of the samples and columns corresponding to a group of ions present in the respective samples. A processor is provided for determining a characteristic value corresponding to at least one of a group of components present in the samples, wherein the components are made up of at least a portion of the group of ions, using at least one of a correlation function and a factorization function. A user interface is in communication with the processor for displaying a visual indication of the characteristic value such that a user may receive a visual indication of the types of components present in the samples.

The invention discloses a universal correction method of large-scale metabonimics data. The method comprises the following steps: analyzing samples through adopting a chromatograph-mass spectrometer to obtain a metabolic profiling, calculating a ratio of the response intensities of metabolites in every two adjacent quality control samples (QC), sequencing the obtained ratios from small to large, screening the ratios accounting for 5% of the total quantity of the ratios as discrete points, averagely distributing the 5% discrete points to two ends of the sequenced ratios in order to establish a model and screen the random error in the metabonimics data, ad correcting the random error through using a linear fitting model of the ratios; and constructing a virtual QC technology by using a linear regression model in order to realize the system error correction of a large-scale metabonimics data set. The method has the advantages of highly-efficient and accurate correction of the random error and the system error of the large-scale metabonimics data, realization of integration of multi-batch and different device metabonimics data.

The invention provides a machine learning diabetic retinopathy onset risk prediction method. The method comprises the following steps: a data acquisition module for acquiring metabonomics data; a data preprocessing module for preprocessing the acquired data; a machine learning module for constructing a prediction model based on a machine learning algorithm and metabonomics data in order to predict the risk of diabetic retinopathy; a display output module for testing the obtained to-be-predicted sample and outputting a prediction result, wherein if the prediction result is 1, the diabetic retinopathy risk exists, and if the prediction result is 0, the diabetic retinopathy risk does not exist. By applying the embodiment of the invention, the diabetic retinopathy risk prediction model is constructed by combining metabonomics characteristics on the basis of technologies mainly based on the random forest and the support vector machine algorithm. The method can be used for improving decision-making efficiency, guiding non-medical personnel to carry out disease risk detection or assisting clinical decision-making, and achieving the purposes of three-level prevention of diseases and promotion and development of health of the whole people.

The invention provides a metabonomics database establishment method and application of Chinese wolfberry tissues. The metabonomics database establishment method comprises the following steps: collecting leaves and fruit tissues of different varieties of Chinese wolfberry, summarizing the leaves of different varieties, summarizing the fruits of different varieties, respectively carrying out pretreatment, and adding an extraction reagent for extraction to obtain a leaf extracting solution and a fruit extracting solution; carrying out LC-MS/MS (Liquid Chromatography-Mass Spectrometry/Mass Spectrometry) detection on the extracting solution obtained in the step S1 and carrying out data analysis; analyzing the chemical structure of each metabolite and positioning an ion chromatographic peak; andbuilding a database. The method disclosed by the invention has the beneficial effects that (1) through mutual cooperation of a pretreatment method, a mass spectrometry method and a chromatographic method, a large amount of substances of the Chinese wolfberry leaves and the Chinese wolfberry fruits are rapidly identified, and a comprehensive metabolite database is constructed; (2) the metabolite database provides convenience for subsequent qualitative and quantitative analysis of the Chinese wolfberry metabolites; and (3) detection and determination of specific metabolites of the Chinese wolfberry leaves and the Chinese wolfberry fruits, so that a material basis is provided for subsequent metabolism research and development of Chinese wolfberry.

A model construction method for researching black sea bream immune mechanism enhancement by selenized glycosaminoglycan based on liver metabonomics relates to the field of biomedical analysis, and comprises the following steps: 1) uniformly dividing young black sea bream into an experimental group and a blank group; 2) adding selenized glycosaminoglycan into the feed of the experimental group; 3)carrying out hunger treatment on the young black sea bream in the experimental group and the blank group, anesthetizing, taking out liver tissues, and storing for later use; 4) preparing a liver tissue sample, preparing a quality control sample in the same time, and using ultra-high performance liquid chromatography-time-of-flight mass spectrometry technology for treatment; and (5) analyzing and processing the collected liver metabonomics data of the black sea breams, identifying and screening out liver metabonomics biomarkers for enhancing the immune mechanism of the black sea breams relatedto the selenide glycosaminoglycan, and constructing and analyzing metabolic pathways pointed by the liver metabonomics biomarkers. The construction method is good in systematicness, high in accuracy,low in cost and simple to operate.

This invention relates to statistically significant methods for metabolomics data analysis that incorporate the structure information of metabolites. Understanding of disease pathogenesis and drug effects, as well as prediction of variation in drug response can be achieved by analyzing quantitative data measuring metabolomics biomarker profiles from biological samples. This invention is to boost the statistical power of analyzing metabolomics data. The comprising methods may include retrieving information of metabolites' chemical structures, converting them into structural data, and integrating the structural data into analysis of metabolite concentration data to improve the evaluation of metabolites and to better identify metabolomics signatures.

The invention discloses a parallel computing based metabonomics data processing method. The parallel computing based metabonomics data processing method includes the steps: (1) feeding a sample into a chromatography-mass spectrometry detector, so that original data displayed in a spectrogram form and sample component retention time are obtained; (2) achieving data processing parallelization by means of combining parallel computing with MZmine software: performing task decomposition of the original data obtained from the step (1) according to spectral peaks and the sample component retention time, and enabling a plurality of servers configured with the MZmine software to perform parallel computing for sub-tasks obtained from task decomposition, so that a sample component data table is obtained; (3) merging and summarizing computing results. By the parallel computing based metabonomics data processing method, data processing can be accelerated and computing cost can be saved.

The invention discloses a metabonomics data processing method and device based on stable isotope labeling. The method specifically comprises the following steps: acquiring isotope information of a first annotation metabolite in a non-labeled sample; based on the isotope information, determining a reference isotope peak and a to-be-adjusted isotope peak in the isotope peaks of the to-be-analyzed sample according to a preset division condition; according to the chromatographic retention time and the peak boundary corresponding to the peak top point of the reference isotope, adjusting the chromatographic retention time and the peak boundary corresponding to the peak top point of the isotope to be adjusted to obtain a target isotope peak; respectively calculating a first isotope peak abundance value of the reference isotope peak and a second isotope peak abundance value of the target isotope peak; and correcting the first isotope peak abundance value and the second isotope peak abundance value through a natural isotope correction algorithm to obtain an isotope labeling result of the to-be-analyzed sample. Therefore, the marked condition of each metabolite can be accurately obtained, so that comprehensive dynamic metabolism analysis on the metabolome in the organism is realized.

The invention discloses a populus diversifolia sexless breeding method based on a gene regulatory network. The method comprises the following steps: forming a populus diversifolia positioning group; conducting explant culture according to the populus diversifolia positioning group, and obtaining phenotype data, transcriptomics data, proteomics data and metabonomics data of the populus diversifolia rooting ability according to the populus diversifolia positioning group; positioning QTL, eQTL, pQTL and mQTL of the populus diversifolia rooting ability respectively according to the phenotype data, the transcriptomics data, the proteomics data and the metabonomics data of the populus diversifolia positioning group; forming the gene regulatory network of the populus diversifolia rooting process according to the QTL, the eQTL, the pQTL and the mQTL of the populus diversifolia rooting ability, and positioning network quantitative trait loci (nQTL) of the populus diversifolia rooting ability according to the gene regulatory network; conducting populus diversifolia sexless breeding according to the nQTL of the populus diversifolia rooting ability. According to the method of the embodiment, the populus diversifolia single plant with strong rooting ability can be effectively screened out, the reproductive rate of the populus diversifolia is improved, and the stress resistant sexless breeding of the populus diversifolia is greatly promoted.

The invention provides a metabolomics data missing value filling method based on neighboring stability, wherein the method belongs to the field of metabolomics data analysis technology. The core technology of the method is metering stability of content of k most neighboring samples of a sample containing a missing metabolite in the corresponding metabolite, and filling different types of missing values by means of different strategies. The method has relatively high filling effect to the metabolomics data which contain the missing value and has an important significance to subsequent data analysis, metabolic marker selection, etc.

The invention discloses an acute coronary syndrome early warning method and device based on metabonomics data. The method comprises the following steps: acquiring metabolite data of a normal coronaryartery biological individual and metabolite data of an acute coronary syndrome biological individual; screening out differential metabolite data; according to the differential metabolite data, carrying out machine learning on an LightGBM model to obtain an acute coronary syndrome early warning model, wherein the acute coronary syndrome early warning model comprises multiple biomarkers used for diagnosing the acute coronary syndrome, according to the acute coronary syndrome early warning model, obtaining an index value of each biomarker corresponding to the to-be-diagnosed biological individual, judging whether the index value of each biomarker exceeds a preset normal value range or not, and outputting acute coronary syndrome early warning information of the to-be-diagnosed biological individual according to a judgment result. Acute coronary syndrome early warning can be performed on the patient according to the metabolite data of the patient so that non-invasive early warning can be realized.