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2508 results about "Biomedical technology" patented technology

Biomedical technology is the application of engineering and technology principles to the domain of living or biological systems, with an emphasis on human health and diseases,

Female private rehabilitation training system integrating breathing method and neuromotor control

The invention relates to the technical field of biomedicine, and discloses a female private rehabilitation training system integrating a breathing method and neural motor control, and the system comprises a data collection module which is used for collecting physiological data of a user; the personalized training scheme generation module is used for generating a personalized nerve-muscle-fascia training scheme; the nerve-muscle synchronous resonance training module is used for constructing a time sequence matching model and generating an adaptive training dynamic control instruction; the space-time adaptability training module is used for adjusting training duration, intensity and stimulation frequency; the multi-dimensional nerve-muscle feedback fusion module is used for constructing a feedback response model; and the fascia synchronous activation and relaxation module is used for coordinating the tension relationship between the fascia and the muscle system. According to the method, feature matching is carried out on an electric activation heat map matrix through the convolutional neural network, analysis of a myoelectricity response state transition probability is carried out in combination with a hidden Markov model, and stimulation parameters and respiratory rhythm are optimized in real time according to a training process.
Owner:JIUJIANG ZHENMEI HEALTH MANAGEMENT CO LTD

Hepatocyte differentiation degree evaluation method based on multi-omics data

The invention relates to the technical field of biomedicine, in particular to a hepatic cell differentiation degree evaluation method based on multi-omics data, which comprises the steps of sample collection and preprocessing, transcriptomics, proteomics and metabonomics data analysis, multi-omics data integration and modeling and result output. By integrating multi-level biological information, a multi-dimensional scoring model is constructed, the liver cell differentiation state is quantitatively evaluated, and a standardized grading system is provided for clinic. The method can solve the limitation of single omics analysis, improves the evaluation accuracy and reliability, has universality, can be popularized to other malignant tumor research, and assists precise medical development.
Owner:ZHEJIANG UNIV

Nano system for tumor radioimmunotherapy and preparation method and application thereof

The invention discloses a nano system for tumor radioimmunotherapy and a preparation method and application thereof, and belongs to the technical field of biological medicines.The system modifies bacteria outer membrane vesicles (OMVs) through engineering to enable the bacteria outer membrane vesicles to carry magnetite nanoparticles (Fe3O4NPs) and an ATR inhibitor VE822, the Fenton reaction activity of the Fe3O4NPs and the synergistic effect of the ATR inhibitor for inhibiting DNA damage repair are utilized, and the tumor radioimmunotherapy effect is improved. DNA damage is amplified, DNA damage reaction (DDR) is inhibited, generation of hydroxyl radicals (. OH) under radiation is enhanced, radiation resistance of tumor cells is reduced, immune reaction is reactivated, infiltration of effector T cells to tumors is improved, growth of mice tumors is remarkably inhibited, and an effective strategy is provided for tumor radioimmunotherapy.
Owner:ANHUI PROVINCIAL HOSPITAL

Multi-agent diagnosis planning device and method based on consultation thinking process

The invention relates to the technical field of artificial intelligence and biomedicine, and provides a multi-agent diagnosis planning device and method based on a consultation thinking process. The multi-agent diagnosis planning device comprises a diagnosis planning agent, a pathological section analysis agent, an in-hospital information aggregation agent, an information search agent, a knowledge base search agent, an evaluation agent, an arbitration agent and a risk assessment agent. Each agent realizes data interaction through a dynamic priority message bus, and the evaluation agent and the arbitration agent form a progressive verification closed loop: after the evaluation agent outputs a question evidence chain, the arbitration agent triggers diagnosis correction only when question items are greater than 3 items, and otherwise, final diagnosis is output based on a preset rule. According to the invention, the thinking process of multidisciplinary expert collaboration in clinical consultation is simulated by constructing a multi-agent collaborative diagnosis framework, and the whole process intelligence from medical data acquisition and analysis to diagnosis decision is realized.
Owner:GUANGZHOU FANGXIN MEDICAL TECH CO LTD

Pharmaceutical composition of paclitaxel dimer prodrug nanoparticles and traditional Chinese medicine compound and application of pharmaceutical composition

The invention relates to the technical field of biological medicine, and discloses a pharmaceutical composition of paclitaxel dimer prodrug nanoparticles and a traditional Chinese medicine compound and application of the pharmaceutical composition, and the pharmaceutical composition is composed of Qiyuansanlong prescription freeze-dried powder and paclitaxel dimer prodrug nanoparticles; wherein the paclitaxel dimer prodrug nanoparticles comprise one of NQO1 response type PTX dimer prodrug nanoparticles (PTX-Q-PTX NPs) or GSH (glutathione) response type PTX dimer prodrug nanoparticles (PTX-SeSe-PTXNPs), and the paclitaxel dimer prodrug nanoparticles comprise one of NQO1 response type PTX dimer prodrug nanoparticles (PTX-Q-PTX NPs) and GSH response type PTX dimer prodrug nanoparticles (PTX-SeSe-PTXNPs). According to the pharmaceutical composition disclosed by the invention, a traditional Chinese and western medicine synergistic treatment system is innovatively constructed, and the advantage of multi-dimensional synergistic interaction is shown. Firstly, an NQO1 / GSH double-response type intelligent release system is adopted, and a biomarker highly expressed by tumor tissue can be specifically responded to realize precise drug release, so that the PTX concentration in tumors is improved compared with that of a traditional dosage form, and meanwhile, the drug circulation time is prolonged. Secondly, the active ingredients in the Qiyuansanlong prescription freeze-dried powder can significantly down-regulate the PD-L1 expression level, synergistically enhance CD4 + T and CD8 + T cell infiltration, and form chemical-immune dual killing effects.
Owner:ANHUI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE

IBS micro-ecological transplantation intelligent prediction method and system based on multi-omics driving

The invention provides an IBS micro-ecological transplantation intelligent prediction method and system based on multi-omics driving, and relates to the technical field of biomedicine. The method comprises the following steps: establishing a multi-omics data fusion subsystem to collect metagenome, metabolome, host genome and clinical phenotype group data of a target patient; inputting the data into a flora-metabolite combined network analysis model to construct an interaction network and extracting features; generating an incidence matrix based on the features and the host genome data and calculating indexes; generating indexes through a dynamic response algorithm in combination with the clinical phenotypic data and the indexes; and outputting a curative effect prediction result by using a transfer learning framework combined with modeling. The system comprises a data acquisition module, a network analysis module, a correlation calculation module, a dynamic response module and a joint modeling module. According to the method, multiple omics data are integrated, the flora and host relation is accurately mined, intelligent prediction of the micro-ecological transplantation curative effect is achieved, powerful support is provided for IBS personalized treatment, and meanwhile data processing and safety guarantee measures are taken.
Owner:THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL

Dynamic fermentation tank control system for production of diabetes intestinal micro-ecological regulation preparation

The invention relates to the technical field of biological medicine, in particular to a dynamic fermentation tank control system for producing a diabetes intestinal microecological regulating preparation. The system comprises a fermentation tank sensing feedback control network establishment module, a fermentation tank growth earlier-stage nutrition supply control module, a fermentation tank growth later-stage adjustment control module and a fermentation tank metabolism process environmental condition control module, and can generate an embedded sensing feedback control network by installing a sensor and being connected with a central feedback control system. The sugar source supply quantity, the nitrogen source supply quantity, the temperature, the pH value, the dissolved oxygen concentration and the oxygen and carbon dioxide gas proportional flow corresponding to the fermentation tank are synchronously monitored in real time, so that supply cooperative dynamic control and fermentation growth cooperative dynamic control are carried out, and meanwhile, metabolism environment condition cooperative dynamic control is carried out; therefore, the cooperative control work of the microbial growth environment conditions is executed. By optimizing environment control in the fermentation process, efficient production of the intestinal microecology regulating preparation can be achieved.
Owner:SHANDONG XIEHE UNIV +1

Hydrogel with photo-thermal multiple antibacterial and hemostatic functions as well as preparation method and application thereof

The invention belongs to the technical field of biological medicines, and particularly relates to hydrogel with photo-thermal multiple antibacterial and hemostatic functions. The multifunctional hydrogel is prepared from epsilon-polylysine (EPL), gallic acid (GA), tannic acid (TA) and ferric trichloride hexahydrate. The polyphenols are obtained through multiple mechanisms such as reaction between the polyphenols and amino groups, metal chelation, pi-pi interaction and electrostatic attraction (as shown in Figure 1). The metal ion and multiple dynamic cross-linking system hydrogel is constructed, the hydrogel with positive charges enriched on the surface can act with blood platelets with negative charges, red blood cell aggregation, blood platelet adhesion and vasoconstriction effects are promoted, and the blood coagulation efficiency is improved. The hydrogel shows excellent antibacterial performance and photo-thermal performance, can prevent infection in the inflammation stage of wound healing, can effectively accelerate wound healing, and has good biological safety.
Owner:JILIN INST OF CHEM TECH

Wound repair material as well as preparation method and application thereof

PendingCN120305450ADigestive systemAerosol deliveryPlatelets bloodDiabetic ulcer
The invention relates to the technical field of biological medicine, in particular to a wound repair material and a preparation method and application thereof.The wound repair material is in a gel shape and comprises hydrogel and platelet-rich plasma, the hydrogel is formed by dynamic crosslinking of collagen and oxidized hyaluronic acid, and the hydrogel physically encapsulates the platelet-rich plasma. The gelatinous wound repair material provides bionic mechanical support through a dynamic cross-linked network, synergistically regulates and controls an inflammation microenvironment and sequential release of PRP growth factors, remarkably promotes angiogenesis and wound healing, is suitable for the clinical treatment fields of diabetic ulcer, chronic difficult-to-heal wounds and the like, and has broad application prospects. The material has the functions of mechanical support, anti-inflammatory regulation and growth factor controlled release.
Owner:GUANGDONG MEDICAL UNIV

Application of secretory LCTL in preparation of biomarker for chronic kidney disease diagnosis

The invention belongs to the technical field of biological medicines, and particularly relates to application of secretory lactase-like protein (LCTL) as a diagnostic marker in preparation of a diagnostic kit for chronic kidney diseases. According to the present invention, the secretory form of the LCTL is found for the first time, the secretory LCTL content in the human serum is detected by using the existing commercial ELISA kit for the first time, and the further research finds that the secretory LCTL content in the serum of the chronic kidney disease patient is significantly reduced compared with the normal person; and the content of the LCTL in the serum is obviously related to the renal function impairment degree and proteinuria degree of the patient, so that the application of the secretory LCTL in preparing the biomarker for diagnosing the chronic kidney disease is provided for the first time. The invention provides a new method for chronic kidney disease diagnosis, and has important clinical significance and commercial value.
Owner:THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV

Biological valve treatment method and biological valve dry piece

The invention relates to the technical field of biomedical treatment, and particularly discloses a biological valve treatment method and a biological valve dry piece. The bioprosthetic valve treatment method provided by the invention comprises the following steps: pretreatment, crosslinking, degreasing, anti-calcification and drying. In the anti-calcification step, an anti-calcification solution is used for treatment; the anti-calcification solution is a 0.08 to 0.12 M PBS (Phosphate Buffer Solution) containing 0.5 to 6 weight percent of ethanolamine and 0.1 to 0.5 weight percent of sodium borohydride; furthermore, the anti-calcification solution is a 0.08 to 0.12 M PBS (Phosphate Buffer Solution) containing 2 to 4 weight percent of ethanolamine and 0.2 to 0.4 weight percent of sodium borohydride; the invention further provides the bioprosthetic valve dry piece obtained through the bioprosthetic valve processing method. According to the bioprosthetic valve treatment method, the anti-calcification performance of the bioprosthetic valve can be improved, and the obtained bioprosthetic valve dry piece has good stability and storage performance.
Owner:PERMED BIOMEDICAL ENG CO LTD

Risk early warning system based on enteral nutrition management of patient

The invention discloses a risk early warning system based on enteral nutrition management of a patient, and belongs to the technical field of medical technology and biomedicine. A risk early warning system based on enteral nutrition management of a patient comprises a patient monitoring module, a score calculation module, a nutrition control module, an early warning notification module, a nutrition scheme adjustment module and a continuous observation and feedback module. The problems that in the prior art, symptoms of critical patients with the acute respiratory distress syndrome are not monitored in time, the regulation efficiency of enteral nutrition supply is low, errors are prone to occurring, and an early warning mechanism is incomplete are solved. By introducing a real-time monitoring and intelligent quantitative evaluation tool, an automatic regulation and control mechanism and multi-level early warning notification and detailed guidance, main problems existing in enteral nutrition management of the severe patient with the acute respiratory distress syndrome at present are effectively solved, and the rehabilitation process and the treatment effect of the patient are remarkably improved.
Owner:XUZHOU MEDICAL UNIVERSITY +2

Macrocyclic covalent organic polymer material for inhibiting pi-pi stacking effect and application of macrocyclic covalent organic polymer material

The invention discloses a macrocyclic covalent organic polymer material for inhibiting a pi-pi stacking effect and application of the macrocyclic covalent organic polymer material, and belongs to the technical field of biological medicines. The preparation method comprises the following steps: adding 5, 10, 15, 20-tetra (4-ethynylphenyl) copper porphyrin and a macrocyclic monomer into an organic solvent in a protective atmosphere, and carrying out solvothermal reaction in the presence of a catalyst and alkali to obtain the macrocyclic covalent organic polymer material. According to the invention, 5, 10, 15, 20-tetra (4-ethynylphenyl) copper porphyrin and a macrocyclic monomer form a porous polymer MCP-CU-POP, the material utilizes the photo-thermal capability to combine the effects of simulated photo-thermal (PTT), photodynamic (PDT), peroxidase (PODs) and glutathione peroxidase (GSH-Px) to perform synergistic antibiosis, and the inherent characteristics of an infected microenvironment can also be utilized to induce death of bacteria, so that the antibacterial property of the material is greatly improved, and the antibacterial property of the material is greatly improved. And the microenvironment of the bacterial infection part can be adjusted, so that the recovery of the bacterial infection wound can be obviously accelerated.
Owner:AFFILIATED HOSPITAL OF WEIFANG MEDICAL UNIV

Time interference dynamic multi-target accurate focusing transcranial electric therapeutic apparatus

The invention relates to the technical field of biomedicine, in particular to a time interference dynamic multi-target accurate focusing transcranial electric therapeutic instrument which comprises a host module, an electric stimulation module, an intelligent stimulation mode optimization coordination module, an integrated electrode module, an electroencephalogram processing module, an adaptive treatment navigation module based on fMRI + EEG and a safety protection module. The navigation module calculates fMRI and EEG information, generates and optimizes a stimulation mode, the host module overall controls all the modules, the electrical stimulation module outputs multiple paths of high-frequency interference signals and low-frequency compensation signals, the integrated electrode module achieves stimulation and electroencephalogram collection in a time-sharing mode, the electroencephalogram processing module collects and processes the signals, and the safety protection module guarantees treatment safety. According to the application, the bottleneck that the current utilization rate is low, the positioning is fuzzy and the mode is rigid in the existing transcranial electrical stimulation technology is broken through, accurate synchronous / sequential stimulation of multiple deep brain regions is realized, and the accuracy, effectiveness and safety of treatment of neurological and mental diseases are improved.
Owner:HUNAN HUAYI ELECTROMAGNETIC MEDICINE RES INST CO LTD

Gestation period premature delivery risk auxiliary prediction method and system

The invention relates to the technical field of biomedicine, in particular to a gestational period premature delivery risk auxiliary prediction method and system, and the method comprises the steps: obtaining the historical body data and delivery cycle of a pregnant woman, and determining the historical premature delivery degree of the pregnant woman according to the delivery cycle; according to the premature delivery degree difference between different historical pregnant women and the deviation degree change condition difference of the same type of body data during each physical examination, determining the premature delivery correlation degree of different types of body data of the historical pregnant women; clustering the historical pregnant women according to the deviation time difference of the same type of body data among different historical pregnant women, determining the overall correlation of each type of body data according to the number of pregnant women in the cluster and the premature delivery correlation degree of the corresponding type of body data, and screening out the target type of body data; and based on the body data of the target type of the historical pregnant woman during different times of physical examination, constructing a premature delivery prediction model to perform premature delivery prediction. According to the method, the accuracy of premature delivery prediction is effectively improved.
Owner:西安国际医学中心有限公司

Data processing method and related device

This application relates to the field of biomedical technologies, and provides a data processing method and related devices. The method includes: collecting first data and second data from a patch clamp electrophysiological system, where the first data is data generated after a configured carbon fiber electrode applies multiple scanning voltages to a cell, and the second data is data generated after a configured stimulating electrode applies an electrical stimulation to the cell and then the configured carbon fiber electrode applies multiple scanning voltages to the cell; extracting target current data from the first data, and generating a first curve based on the target current data and the second data; sampling a single scanning voltage to obtain target sampling points, and generating a corresponding second curve based on the initial current data and the sampling time of the multiple target sampling points in the sampled first data or the sampled second data, so as to be able to obtain the original current and voltage data and convert the original data into an intuitive and effective curve.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI

Mutant photo-induced ion channel ChR-2 protein and application thereof

PendingCN121045353APeptide/protein ingredientsAlgae/lichens peptidesIon Channel ProteinMutant
The invention relates to the technical field of biomedicine, discloses mutant photo-induced ion channel ChR-2 protein, and further discloses a nucleic acid construct, an expression vector, a cell, related application and a computer model. The light-sensitive channel ChR2 protein mutant obtained by the invention has stronger light current, and the light-sensitive capability of the light-sensitive channel ChR2 protein mutant is at least improved by 100 times; besides, the invention also obtains a nucleotide sequence for coding the light-sensitive channel ChR2 protein mutant, constructs a recombinant expression vector, and obtains the light-sensitive channel ChR2 protein with higher expression quantity and stronger light sensitivity, and the light-sensitive channel ChR2 protein is very suitable for expression in cells of mammals (especially human); according to the invention, the rhodopsin in different channels is systematically studied by modifying the position G224 in the helix 6 of seven transmembrane helix motifs, which proves that the mutation of the position G224 in the helix 6 in WT ChR2 accelerates the photosensitivity of the channels, and the considered position is homologous in the helix 6 of the rhodopsin in different channels.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Application of golden amide alcohol ester in preparation of medicine for treating cholestasis

The invention belongs to but is not limited to the technical field of biomedicine, and discloses application of golden amide alcohol ester to preparation of a medicine for treating cholestasis. The in-vitro cell level verifies that the golden amide alcohol ester has relatively strong activity of activating FXR and CAR. The golden amide alcohol ester can relieve the cholestasis symptom of a cholestasis model mouse. The golden amide alcohol ester can obviously reduce the content of total bile acid and bilirubin in cells, relieve cholestasis and relieve hepatocyte damage. The golden amide alcohol ester can regulate and control the protein level of transporters and metabolic enzymes related to bile acid and bilirubin through double excitation of FXR and CAR, relieve cholestasis and achieve the purposes of benefiting gallbladder and removing jaundice.
Owner:THE FIRST HOSPITAL OF LANZHOU UNIV

Engineering membrane coated nano drug delivery system and application thereof

The invention provides an engineered membrane coated nano drug delivery system and application thereof, and belongs to the technical field of nano biomedices.The drug delivery system comprises an inner core combined with a drug, the inner core is coated with a cell membrane, based on the nano drug loading technology and the membrane coating technology, DOX and SRF are loaded on mPDA mesoporous nanoparticles, and thyroid cancer synergistic killing nanoparticles mPDS are formed; the bionic drug delivery system is characterized in that mPDS is used as a target drug delivery system, mPDS is coated with a genetically engineered tumor cell membrane, a dual-targeting membrane-coated nano drug delivery system (mPDS-coated CAR-M) is obtained, and the bionic drug delivery system can penetrate through thyroid cancer in a targeted manner, gather in a focus and reduce side effects of chemotherapy; when near-infrared irradiation is carried out on local tumor, DOX and SRF in mPDS are released, the synergistic effect of photothermal therapy-chemotherapy-targeted therapy is achieved, and the thyroid cancer is killed synergistically.
Owner:TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH

An enhanced NK cell, its preparation method and application

The present invention provides an enhanced NK cell, its preparation method and application, belonging to the field of biomedical technology. The present invention uses a compound of quercetin, paclitaxel and resveratrol as a culture medium induction additive to pre-treat NK cells, successfully enhancing the killing toxicity of NK cells against human lung cancer cells and effectively inhibiting tumor growth, opening up a new way for the treatment of lung cancer and having important research value and potential clinical application prospects in the field of tumor immunotherapy.
Owner:WEST CHINA HOSPITAL SICHUAN UNIV +1

Biomarker for auxiliary diagnosis of progressive suprakaryotic paralysis and application thereof

The invention discloses a biomarker for auxiliary diagnosis of progressive suprakaryotic paralysis and application thereof, and relates to the technical field of biomedicine. The biomarker is a neuron-derived extracellular vesicle carrying a Tau deformable protein; the Tau deformation protein is 4R Tau or pTau181, and the Tau deformation protein is a protein with the molecular weight of 4R The invention develops a biomarker capable of assisting in diagnosing progressive suprakaryotic paralysis, and the biomarker can be used for effectively identifying a progressive suprakaryotic paralysis (PSP) patient, a Parkinson's disease (PD) patient and a healthy person (HC). Meanwhile, a progressive supranuclear paralysis diagnosis model is also constructed, the sensitivity of the multivariable logistic regression model for distinguishing PSP and HC is 95.7%, the specificity is 90.0%, and the AUC is 0.974; the sensitivity of the multivariable logistic regression model for distinguishing PSP and PD is 96.3%, the specificity is 90.0%, and the AUC is 0.968.
Owner:BEIJING NEUROSURGICAL INST

Rapamycin-induced extracellular vesicles and application thereof in preparation of drugs for promoting wound repair

The invention relates to the technical field of biological medicines, in particular to rapamycin-induced extracellular vesicles and application thereof in preparation of a medicine for promoting wound repair. The rapamycin-induced extracellular vesicles can enhance the migration and tube forming ability of endothelial cells, so that angiogenesis is promoted; meanwhile, the proliferation and migration capabilities of macrophages can be inhibited, and the proportion of M1 type macrophages in a wound is reduced, so that the inflammatory response mediated by the macrophages is relieved; and the composition shows extraordinary effects in the aspect of accelerating wound repair. The biological activity of the extracellular vesicles induced by the rapamycin depends on the activation of a PI3K / Akt signal channel.
Owner:ANHUI PROVINCIAL HOSPITAL

Umbilical cord mesenchymal stem cell preparation and application thereof in treatment of prostate diseases

The invention belongs to the technical field of biological medicines, and particularly relates to an umbilical cord mesenchymal stem cell preparation and application thereof in treating prostate diseases. According to the umbilical cord mesenchymal stem cell preparation, the umbilical cord mesenchymal stem cells of the third generation to the sixth generation and the neurofilament peptide serve as active components, pharmaceutically acceptable auxiliary materials are matched, the prostate index can be remarkably reduced, the concentration of PACP and SRD5A2 can be reduced, and the umbilical cord mesenchymal stem cell preparation has a remarkable curative effect on prostatic hyperplasia. And the umbilical cord mesenchymal stem cells of the third generation to the sixth generation and the neurofilament peptide supplement each other and have a synergistic effect, so that a remarkable progress is generated.
Owner:ZHONGYOU ZHENGUO (ZHEJIANG) TECHNOLOGY DEVELOPMENT CO LTD

Chronic hypoperfusion animal model construction method and application thereof

The invention provides a chronic hypoperfusion animal model construction method and application thereof, and relates to the technical field of biomedicine. The construction method of the chronic hypoperfusion animal model, provided by the invention, aims at brain capillary endothelial cells, and the constructed chronic hypoperfusion animal model is global and lasting brain hypoperfusion, has no infection or death risk and is low in cost. The animal model constructed by using the method is more convincing in the aspects of reperfusion research and drug curative effect evaluation.
Owner:WOMEN & CHILDRENS MEDICAL CENTER AFFILIATED WITH GUANGZHOU MEDICAL UNIVERSITY

Double-crosslinking hydrogel loaded with stem cell exosome as well as preparation and application of double-crosslinking hydrogel

The invention relates to the technical field of biomedicine, in particular to stem cell exosome-loaded bi-crosslinked hydrogel as well as preparation and application thereof, and the bi-crosslinked hydrogel comprises the following components in parts by weight: 50-90 parts of a matrix polymer; 0.1 to 5 parts of an active load; 1 to 10 parts of cyclodextrin; 5 to 20 parts of modified chitosan; 0.01 to 1 part of a photoinitiator; and 0.01 to 0.5 part of growth factors. Through double-network design of physical / chemical primary cross-linking and photo-initiation secondary cross-linking, the bottleneck that the mechanical property and the machinability of the traditional single cross-linking hydrogel are difficult to consider at the same time is overcome; meanwhile, the human umbilical vein endothelial cell exosome is introduced, and efficient loading, uniform dispersion and degradation coupling slow release of the exosome are realized by virtue of beta-cyclodextrin inclusion and a double-crosslinking network. Therefore, the problems of mechanics, degradation, cross-linking speed or tissue adhesion of cross-linked hydrogel in the prior art are solved.
Owner:BEIJING UNIV OF CHEM TECH

Application of metabolic marker combination in diagnosis of gastric cancer

The invention belongs to the technical field of biological medicine, and particularly relates to application of a metabolic marker combination in diagnosis of gastric cancer. According to the method, specific metabolites in plasma or tissue of a gastric cancer patient are accurately quantified and analyzed through a targeted metabonomics technology, an optimal metabolic marker combination is developed through machine learning, and a novel non-invasive, efficient and accurate gastric cancer detection method is provided.
Owner:BEIJING FRIENDSHIP HOSPITAL CAPITAL MEDICAL UNIV

DNA tetrahedron capable of carrying oligonucleotides and nucleic acid analogues as well as preparation method and application of DNA tetrahedron

The invention belongs to the technical field of biological medicines, and particularly relates to a DNA tetrahedron capable of carrying oligonucleotides and nucleic acid analogues as well as a preparation method and application of the DNA tetrahedron. The method comprises the following steps: cutting off one single-chain DNA in classical tetrahedral framework nucleic acid to form three short-chain DNAs, and self-assembling six single-chain DNAs again to form a DNA tetrahedron to obtain ORT; according to the invention, the mismatching and self-matching phenomena of tFNA are improved, the yield of tFNA is improved, and the tFNA has good structural stability, high bioavailability and excellent biocompatibility; the ORT prepared by the invention can be used as a drug carrier for loading nucleic acid and nucleic acid analogues, protein drugs or small molecule drugs, and the application of the ORT in the aspects of drug delivery, gene therapy, biosensing and the like is promoted.
Owner:SICHUAN UNIV

Application of scEMC10 in treatment and diagnosis of cerebrovascular endothelial cell senescence

The invention provides application of scEMC10 in treatment and diagnosis of cerebral vascular endothelial cell senescence, and relates to the technical field of biomedicine. The research of the inventor finds that brain microvascular endothelial cell senescence is caused by the lack of scEMC10; after the brain microvascular endothelial cells are treated by scEMC10, beta-galactosidase, SASP and classic senescence markers related to senescence can be down-regulated; after scEmc10 is supplemented to old mice and Alzheimer's disease 5XFAD model mice, the motion coordination ability and the spatial cognitive ability of the mice can be obviously improved, the relative content of a marker phosphorylated alpha-synuclein of the Parkinson's disease of the old mice can be obviously reduced, and the content of tyrosine hydroxylase phosphorylated active forms can be increased. Therefore, the scEMC10 can be used for treating brain microvascular endothelial cell senescence, improving Alzheimer's disease and Parkinson's disease and detecting brain microvascular endothelial cell senescence as a marker.
Owner:WOMEN & CHILDRENS MEDICAL CENTER AFFILIATED WITH GUANGZHOU MEDICAL UNIVERSITY

Febuxostat and aloperine co-amorphous substance as well as preparation method and application thereof

The invention relates to the technical field of biological medicines, in particular to a febuxostat and aloperine co-amorphous substance as well as a preparation method and application thereof. The molar ratio of the febuxostat to the aloperine in the co-amorphous substance of the febuxostat and the aloperine is (0.5-3): 1. The febuxostat and aloperine co-amorphous substance provided by the invention has excellent stability, not only can effectively improve the water solubility and bioavailability of febuxostat, but also can effectively improve the treatment effect on related diseases such as gout, gouty arthritis, hyperuricemia and the like, and has a wide application prospect.
Owner:NAT INST FOR FOOD & DRUG CONTROL

Method and device for predicting average arterial pressure based on full-connection neural network

The invention discloses a method and device for predicting average arterial pressure based on a full-connection neural network, and relates to the technical field of biomedicine based on artificial intelligence. The method comprises the steps that blood pressure pulse wave signals of each patient are collected, and S-G filtering processing is conducted on the blood pressure pulse wave signals; constructing a blood pressure pulse wave envelope line through a double-Gaussian fitting algorithm, and estimating the average arterial pressure of each patient according to the blood pressure pulse wave envelope line; respectively calculating relevancy between the multiple human body physiological parameters of each patient and the average arterial pressure; the human physiological parameter variables with the relevancy larger than a preset value serve as the input quantity of a full-connection neural network, the predicted value of the average arterial pressure serves as the output quantity of the full-connection neural network, a training sample set and a verification sample set are constructed, and the full-connection neural network is trained; and predicting the average arterial pressure of the patient by using the trained full-connection neural network. The accuracy of the non-invasive blood pressure measuring equipment can be improved.
Owner:NATIONAL INSTITUTE OF METROLOGY CHINA