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2302 results about "Toxicity" patented technology

Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. Toxicity can refer to the effect on a whole organism, such as an animal, bacterium, or plant, as well as the effect on a substructure of the organism, such as a cell (cytotoxicity) or an organ such as the liver (hepatotoxicity). By extension, the word may be metaphorically used to describe toxic effects on larger and more complex groups, such as the family unit or society at large. Sometimes the word is more or less synonymous with poisoning in everyday usage.

Model generation apparatus for therapeutic prediction and associated methods and models

Methods, apparatus, systems, and articles of manufacture are disclosed for generation and application of models for therapeutic prediction and processing. A balance of precision and recall can be applied to at least one of a toxicity-related model or an efficacy-related model to configure immunotherapy treatment of a patient and / or cohort of patients. Model output can be evaluated differently depending on a determine patient selection criterion to trigger different actions.
Owner:VANDERBILT UNIV +1

Biohazard big data analysis and monitoring early warning system

PendingCN120452553AData visualisationBiostatisticsBiological hazardReliability engineering
The invention discloses a biological hazard big data analysis and monitoring early warning system, and relates to the technical field of public health safety, and an analysis subsystem in the system comprises a core logic module comprising a quality control unit, an error correction unit, an assembly unit and a box separation unit; the unit analysis module comprises a pathogen analysis unit, a resistance gene unit, a virulence evaluation unit and an evolution development unit; the flora integrated analysis module comprises a traceability analysis unit, a mutation characteristic unit, a propagation evolution unit and a transformation management and control unit; the early warning subsystem comprises a risk assessment and early warning system design unit, a dynamic research and propagation analysis unit, an assessment model construction unit, a pathogen evolution and function research unit, a toxicity and propagation risk comprehensive prediction unit, a pathogen risk monitoring network unit and an unknown pathogen and potential risk identification unit. According to the method, the biological hazard data can be comprehensively, efficiently and accurately analyzed.
Owner:BEIJING JIAOTONG UNIV

Pharmaceutical composition and application thereof

The present invention discloses a pharmaceutical composition comprising a circular RNA and a drug delivery carrier. Compared with traditional linear 1 * siRNA and annular 1 * siRNA, the number of repeated series connection of positive-sense strands is increased to include but not limited to two or more, it is accidentally found that the silence effect is remarkably enhanced, the expression level of the PCSK9 gene can be remarkably reduced, and degradation of mRNA of PCSK9 protein is mediated. The nano-particles are used for delivering oligonucleotide, so that the stability is improved, the immunogenicity is reduced, the effects of lowering cholesterol, reducing aortic plaque load and resisting atherosclerosis are improved, and the nano-particles are safe and free of obvious liver and kidney toxicity and have a wide application prospect in the aspect of preparing medicines for treating hypercholesterolemia and coronary heart disease.
Owner:SUN YAT SEN MEMORIAL HOSPITAL SUN YAT SEN UNIV

Self-replicating RNA (Ribonucleic Acid) molecule, porcine rotavirus RNA vaccine and application thereof

InactiveCN120555461AViral antigen ingredientsVirus peptidesProtein s antigenPorcine rotavirus vaccine
The invention discloses a self-replicating RNA (Ribonucleic Acid) molecule, a porcine rotavirus RNA vaccine and application thereof, and relates to the technical field of vaccines. According to the present invention, the coding sequence of the porcine rotavirus G9P23 type VP4 protein is optimized, such that the fact that the saRNA prepared by using the nucleotide sequence represented by the SEQ ID NO: 10 can secrete the high porcine rotavirus G9P23 type VP4 protein antigen after the cell transfection is found; after the optimized porcine rotavirus G9P23 type VP4 protein is used for immunizing experimental animals, the level of neutralizing antibodies generated by the animals can be improved, and the challenge protection effect is enhanced. Therefore, the nucleic acid molecule provided by the invention can be used for developing drugs and vaccines for causing protective immune response in experimental animal bodies. Compared with a traditional vaccine, the vaccine provided by the invention has good immunogenicity and safety, and has a good application prospect.
Owner:CHENGDU YISIKANG PHARM TECH CO LTD +1

Copper death selective induction nano-particles targeting tumor mitochondria

The invention belongs to the cross technical field of nanomedicine, tumor treatment and immunotherapy, and particularly provides tumor mitochondria-targeted copper death selective induction nanoparticles, which are prepared by the following preparation method: S1, specifically coupling TPY and MHI through condensation reaction to obtain MTPY; s2, MTPY and copper ions are subjected to complexation, and an MTPY-Cu complex is obtained; and S3, the MTPY-Cu complex and albumin are subjected to self-assembly, and the MTPY-Cu-coated Alb nanoparticles are formed. The dosage of copper is only 1 / 1000 of that of free Cu < 2 + >, and equivalent immune regulation and killing effects can be achieved; primary tumors and distant tumor focuses can be inhibited, and lung metastasis is reduced; immune memory can be induced, and relapse can be prevented; the traditional Chinese medicine composition is combined with cis-platinum to remarkably enhance the curative effect and reverse the induced immunosuppression; the invention has the advantages of high biological safety and no obvious liver and kidney toxicity or hemolytic reaction.
Owner:THE SECOND XIANGYA HOSPITAL OF CENT SOUTH UNIV

General type flower fertilization-free planting substrate based on nitrogen-fixing phosphate-solubilizing potassium-solubilizing bacteria

The invention relates to the technical field of flower planting substrates, and discloses a general type flower fertilization-free planting substrate based on nitrogen-fixing, phosphorus-dissolving and potassium-dissolving bacteria, which comprises turfy soil, perlite, ground phosphate rock, straw, carbonized rice husk, humic acid, seaweed oligosaccharide, nitrogen-fixing bacteria, phosphorus-dissolving bacteria and potassium-dissolving bacteria. Turfy soil and perlite are used as a substrate and compounded with ground phosphate rock, straw, carbonized rice husks, humic acid, seaweed oligosaccharide, nitrogen-fixing bacteria, phosphate solubilizing bacteria and potassium solubilizing bacteria, the nitrogen-fixing bacteria provide nitrogen for flowers, and the phosphate solubilizing bacteria and the potassium solubilizing bacteria decompose phosphorus and potassium in the ground phosphate rock, the straw and the carbonized rice husks to provide nutrition for the flowers; the humic acid and the seaweed oligosaccharide have the effects of promoting rooting and growth of the flowers and breeding of beneficial microorganisms; all the internal components have a synergistic effect, the fertilization-free period is extremely long, essential elements for plants are still efficiently provided under the condition of no fertilization, the growth of the plants and the development of flowers are remarkably promoted, the use of toxic substances is reduced, meanwhile, the low incidence rate of diseases and insect pests is ensured, and better flower growth and ornamental effects are achieved on the whole.
Owner:ZHEJIANG ECONOMIC & TRADE POLYTECHNIC

Antibacterial peptide based on D-type amino acid and application thereof

The invention discloses an antibacterial peptide based on D-type amino acid and application of the antibacterial peptide, and the antibacterial peptide is characterized in that the amino acid sequence is w-r-r-w-r-r-w-w-r-k-r (dTrp-dArg-dArg-dTrp-dArg-dArg-dTrp-dTrp-dArg-dLys-dArg). The antibacterial peptide can be synthesized through an Fmoc solid-phase chemical method, the synthesis difficulty is low, and the in-vivo antibacterial activity is good. The antibacterial peptide especially has broad-spectrum killing activity on carbapenem-resistant pseudomonas aeruginosa, pseudomonas aeruginosa, klebsiella pneumoniae, escherichia coli, methicillin-resistant staphylococcus aureus and staphylococcus aureus, is low in hemolytic toxicity, can reach half or more of cell survival rate under medium and low concentration, almost has no toxic effect on cells, and can be used for preparing the antibacterial peptide with a broad-spectrum killing activity on carbapenem-resistant pseudomonas aeruginosa, klebsiella pneumoniae, escherichia coli, methicillin-resistant staphylococcus aureus and staphylococcus aureus. The stability is good, the operability is high, and the cost is low.
Owner:CHONGQING UNIV OF TECH

Cyclic peptide as well as preparation method and application thereof

The invention provides a cyclic peptide as well as a preparation method and application thereof. The cyclic peptide has an amino acid sequence # imgabs0 # represented by formula (1) (wherein X is a Lys residue modified with a fatty acid molecule, and a line connecting Arg and Lys represents an amide bond. The cyclic peptide prepared by the invention has wide antifungal activity and antibacterial activity on drug-resistant bacteria; meanwhile, the biotoxicity and the protease degradation resistance are high, and the in-vivo antibacterial effect of the cyclopeptide can be prolonged. The cyclic peptide can be applied to preparation of anti-bacterial and anti-fungal infection drugs, and can be used as an excellent substitute drug or an auxiliary drug of existing antibiotics. The method for preparing the cyclic peptide is simple, raw materials are easy to obtain, and industrial production can be achieved.
Owner:HUNAN SHENGDA BIOTECHNOLOGY CO LTD

Intelligent diagnosis method, device and equipment for snake venom poisoning and medium

The method is mainly applied to the technical field of deep learning. The invention discloses an intelligent diagnosis method, device and equipment for snake venom poisoning and a medium, and the method comprises the steps: obtaining multi-modal data which comprises a wound image, a symptom text and a blood parameter; performing feature extraction processing on the wound image, the symptom text and the blood parameters to obtain image features corresponding to the wound image, semantic features corresponding to the symptom text and high-dimensional features corresponding to the blood parameters; performing alignment and fusion processing on the image features, the semantic features and the high-dimensional features through a cross-modal attention mechanism to generate fusion features; after the fusion features are input into a preset multi-task classification model, classification is carried out in a snake species label space and a toxicity category space according to the fusion features, a poisoning grade score is determined, and a diagnosis report is generated based on the poisoning grade score. According to the invention, high-precision, rapid and intelligent diagnosis of snake venom poisoning can be realized.
Owner:SHANTOU UNIV

Thiazolidinone compound and application of thiazolidinone compound in preparation of anti-staphylococcus aureus infection medicine

The invention provides a thiazolidinone compound and application thereof in preparation of drugs for resisting staphylococcus aureus infection. The molecular structural formula of the thiazolidinone compound is shown as a formula (1), a formula (2), a formula (3) or a formula (4). The technical scheme of the invention discloses several thiazolidinone compounds, which not only have an excellent bactericidal effect on staphylococcus aureus and can significantly inhibit the formation of a biofilm of staphylococcus aureus, but also have low cytotoxicity and hemolytic activity. According to the technical scheme, a certain foundation is laid for research and development of novel staphylococcus aureus biofilm infection resisting drugs, and the potential of thiazolidone derivatives for developing novel antibacterial agents for staphylococcus aureus related infection can be deeply known possibly.
Owner:SHENZHEN NANSHAN DISTRICT PEOPLES HOSPITAL

Application of scylla antibacterial peptide Scin in preparation of anti-inflammatory composition and preparation method of scylla antibacterial peptide Scin

The invention discloses application of scylla serrata antibacterial peptide Scycin in preparation of an anti-inflammatory composition and a preparation method of the scylla serrata antibacterial peptide Scycin. The nucleotide sequence of the scylla serrata antibacterial peptide Scycin is shown as SEQ ID NO.01. The invention further discloses a preparation method of the scylla serrata antibacterial peptide Scycin. In an LPS (lipopolysaccharide)-induced RAW 264.7 macrophage inflammation model, the recombinant expression plasmid vector containing the scylla antibacterial peptide Scin remarkably inhibits an inflammation cascade reaction by down-regulating expression of proinflammatory factors such as TNF-alpha (tumor necrosis factor-alpha) and IL-6 (interleukin-6), the anti-inflammatory effect of the recombinant expression plasmid vector is equivalent to that of a mesalazine positive control group, and obvious cytotoxicity is not observed.
Owner:XIAMEN UNIV

Application of iNOS inhibitor in preparation of medicine for relieving cell injury caused by toxin combined exposure

The invention belongs to the technical field of cytotoxicity intervention, and particularly relates to application of an iNOS inhibitor in preparation of a medicine for relieving cellular injury caused by toxin combined exposure. KK-1 cells serve as a research model, it is shown for the first time that MC-LR and NaNOS combined contamination can remarkably up-regulate the expression level of iNOS protein, and it is found through tests that Nos2 gene silencing can remarkably relieve tight junction damage and cell apoptosis caused by toxin combined exposure in the KK-1 cells; it is revealed for the first time that iNOS is a core target of toxin combined exposure induced cell tight junction damage and apoptosis, and the blank of toxic mechanism research in toxin combined exposure is filled. The application provides a new direction for a detoxification strategy of environmental toxin combined exposure, provides a theoretical basis for developing an iNOS-targeted inhibitor, and also provides a new target for etiological recognition, early diagnosis and prevention of related diseases caused by environmental toxin combined exposure.
Owner:ZHENGZHOU UNIV

MRNA transcription skeleton vector and application thereof in preparation of self-amplification type mRNA vaccine

The invention discloses an mRNA (messenger ribonucleic acid) transcription skeleton vector and application thereof in preparation of a self-amplification type mRNA vaccine, and belongs to the technical field of veterinary biological products. According to the invention, alphavirus non-structural protein regions NSP2 and NSP3 of a self-amplification type mRNA skeleton are modified, a polyA tail is optimized, and a novel self-amplification type mRNA skeleton is constructed; the self-amplification type mRNA vaccine can improve the antigen expression efficiency, reduce the toxicity of non-structural protein to cells and improve the encapsulation efficiency and delivery efficiency by combining with the optimization of the components and proportion of a lipid nano delivery system, and meanwhile, the self-amplification type mRNA vaccine is wide in applicable pathogen antigen range and can be popularized to more animal epidemic diseases. The characteristics of high-efficiency expression, low-toxicity delivery and single-dose immunization are expected to renovate the immunization strategy of the existing animal vaccine, the epidemic prevention cost of the breeding industry is reduced, and the method has a wide industrial application prospect.
Owner:CHENGDU YISIKANG PHARM TECH CO LTD +1

Lactobacillus pentosus and preparation method and application of bacteriocin thereof

The invention provides a lactobacillus pentosus and a preparation method and application of bacteriocin of the lactobacillus pentosus. The name of the strain is lactobacillus pentosus YCL31, and the strain is preserved in Guangdong Microbial Culture Collection Center (GDMCC) on June 25, 2025, the preservation address is the 5th floor of the building 59, No. 100 courtyard, Xianlie Middle Road, Guangzhou, and the preservation number is GDMCC No: 66589. The bacteriocin separated and purified from the metabolite of the bacterium can destroy the morphological structure of the vibrio parahemolyticus and inhibit the toxicity of the vibrio parahemolyticus, can also achieve the effect of remarkably inactivating the vibrio parahemolyticus in a metapenaeus ensis system, can effectively delay the spoilage of the metapenaeus ensis, and has a good application prospect as a bacteriostatic agent or preservative. Therefore, development and application of the novel bacteriocin have important reference value in related fields.
Owner:HAINAN UNIV

A method for preventing and controlling Nilaparvata lugens in rice based on slow-release nano matrine

The present invention discloses a method for controlling rice brown planthopper based on sustained-release nano-matrine, belonging to the field of nano-pesticides. In the present invention, matrine is loaded into the mesoporous structure of mesoporous silica, and then encapsulated with chitosan to obtain sustained-release nano-matrine. Then, the sustained-release nano-matrine is formulated into a sustained-release nano-matrine solution, which is then applied as a pesticide to the leaves of rice seedlings to control rice brown planthopper. The sustained-release nano-matrine adopted in the present invention can induce rice seedlings to produce the plant defense hormone jasmonic acid precursor 12-oxophytodienoic acid and the brown planthopper-resistant substances luteolin and cis-aconitine. These substances have a targeted toxic effect and can inhibit the reproduction of offspring, thereby better controlling rice brown planthopper.
Owner:JIANGNAN UNIV

Ultra-short sequence antibacterial peptide rich in lysine and tryptophan, antibacterial peptide hydrogel and application thereof

The invention discloses an ultrashort-sequence antibacterial peptide rich in lysine and tryptophan, an antibacterial peptide hydrogel and application of the ultrashort-sequence antibacterial peptide and the antibacterial peptide hydrogel. The preparation method comprises the following steps: combining lysine and tryptophan to obtain polypeptide containing five or six amino acids; then amidation is carried out on the C terminal of the polypeptide, fatty acid chain modification is carried out on the N terminal and side chain amino groups, the ultra-short sequence antibacterial peptide rich in lysine and tryptophan is obtained, and the antibacterial peptide has broad-spectrum antibacterial activity for resisting gram-positive and gram-negative bacteria. An antibacterial peptide micelle self-assembly experiment shows that C12-2KW can be self-assembled into stable hydrogel in a 7.17 mu M PBS (Phosphate Buffer Solution), the hydrogel internally has a compact net-shaped structure, can completely cover the peritoneal injury surface and physically isolate the peritoneal injury surface from surrounding tissues, and has a good effect on treating wound infection caused by MRSA (Methicillin-Resistant Staphylococcus Aureus); meanwhile, the compound has the effect of resisting intestinal wall and abdominal wall adhesion after an operation, is low in toxicity, has a very good application prospect in the aspect of preparing clinical antibacterial drugs, and is expected to become a candidate drug of a novel antibiotic.
Owner:LANZHOU UNIV

Composition capable of resisting doxorubicin cardiotoxicity as well as preparation method, application and preparation thereof

The invention belongs to the technical field of pharmaceutical preparations, and particularly relates to a composition for resisting doxorubicin cardiotoxicity and a preparation method, application and a preparation thereof. The invention provides a composition capable of resisting doxorubicin cardiotoxicity, the composition comprises diosmetin and loureirin B, the diosmetin and the loureirin B can be extracted through natural plants, the raw materials are low in cost and easy to obtain, and clinical popularization and application are facilitated. The cell experiment research finds that the combined administration of diosmetin and loureirin B can significantly improve the survival rate of adriamycin-damaged myocardial cells and significantly reduce the active oxygen level and positive cell rate, and verifies the synergistic interaction of diosmetin and loureirin B in resisting adriamycin cardiotoxicity.
Owner:ZHEJIANG UNIV

Application of combination of tannic acid and triazole medicines in preparation of medicines for treating diseases caused by fungi

The invention discloses application of tannic acid combined triazole medicines in preparation of medicines for treating diseases caused by fungi, and belongs to the technical field of antifungal. A series of drug sensitive tests show that tannic acid lower than 3 [mu] g / ml has no influence on the activity of human vaginal epithelial cells, and after the tannic acid is combined with fluconazole, the tannic acid can significantly inhibit the growth activity of drug-resistant candida (including drug-resistant candida albicans and drug-resistant candida glabrata). In view of the natural property, wide source and low toxicity of tannic acid, the invention provides a new antifungal treatment strategy, and the tannic acid has important clinical application value for treating infection (such as vaginal candidiasis) caused by drug-resistant fungi, especially under the condition that the existing antifungal drugs are poor in effect. Therefore, the tannic acid combined triazole medicine can be used for preparing the medicine for treating diseases caused by fungi.
Owner:HOSPITAL OF DERMATOLOGY CHINESE ACADEMY OF MEDICAL SCIENCES

Abdominal distention hippocampal peptide as well as preparation method and application thereof

ActiveCN121627819APowder deliveryPeptide/protein ingredientsTestis injuryMale reproductive disorders
The invention relates to the technical field of biology, in particular to a swelling hippocampal peptide as well as a preparation method and application thereof. Comprising a polypeptide with an amino acid sequence as shown in SEQ ID NO.1. The hippocampus antioxidative peptide is prepared by adopting an ultrahigh pressure pretreatment and enzymolysis technology, the adopted extraction process is simple in route, and the time and the production cost are effectively saved; an animal model is utilized to prove the antioxidation effect and the effect of improving male reproductive disorder and testis injury of the hippocampal swelling peptide; and on the basis, a novel peptide fragment with high activity, no toxicity and no sensitization is obtained.
Owner:OCEAN UNIV OF CHINA

Soil pesticide residue detection method, system, equipment and medium

The invention relates to a soil pesticide residue detection method, system, equipment and medium, and relates to the technical field of intelligent detection.The method comprises the following steps that a to-be-detected soil sample is subjected to ultrasonic-assisted extraction, and a pesticide extracting solution is obtained; separating and detecting the extracting solution by using a liquid chromatograph to obtain a pesticide chromatographic peak, and performing integral calculation on concentration data; calculating the adsorption capacity based on the concentration data, generating a pesticide distribution diagram, and obtaining a pollution range diagram through spatial interpolation; determining a pesticide degradation rate according to the pollution range map, obtaining half-life period data, and further calculating an exposure dose; residual toxicity effect analysis is carried out based on the exposure dose, a toxicity effect score is obtained, a corresponding soil remediation scheme is formulated according to the score, and the technical problem that pollution risk assessment is lagged due to the lack of pesticide adsorption behavior in soil in the traditional technology is solved.
Owner:SICHUAN NIANFENG BIOTECHNOLOGY CO LTD +1

Compositions and methods to improve sequestration of mycotoxins and their use in detoxification of animal feed and animal production systems

PendingUS20260053874A1AntimycoticsProtozoa material medical ingredientsCell wallMycotoxin contamination
The present disclosure relates to compositions and methods comprising a yeast cell wall extract and a clay material admixed to a proteinaceous and / or cell wall extract(s) from bacterial or fungal fermentation from amino acid production. In another embodiment, the present compositions comprise a yeast cell wall extract, a clay material, and an algal material admixed to a proteinaceous and / or cell wall extract(s) from bacterial or fungal fermentation from amino acid production. This disclosure also relates to methods of utilizing the same to sequester and / or adsorb mycotoxins internal or external to an animal, thereby reducing and / or preventing the toxic and harmful effects of mycotoxin contamination and / or infection in animals. Specifically, application of the present methods and compositions are found in the dietary administration and / or co-administration of the present compositions to animals in animal feed and / or animal production systems, as well as in therapeutic, prophylactic, and research applications.
Owner:ALLTECH CO LTD

Trichoderma asperellum TS7-1 capable of efficiently degrading macrolide antibiotics and application of trichoderma asperellum TS7-1

The invention discloses trichoderma asperellum TS7-1 capable of efficiently degrading macrolide antibiotics and application of the trichoderma asperellum TS7-1, and belongs to the technical field of microorganisms. The preservation number of the trichoderma asperellum TS7-1 is CGMCC (China General Microbiological Culture Collection Center) No. 41372. The Trichoderma asperellum TS7-1 (CGMCC No.41372) provided by the invention has high-efficiency degradation capability on various macrolide antibiotics (erythromycin, roxithromycin and azithromycin), the removal rates of the Trichoderma asperellum TS7-1, roxithromycin and azithromycin in 36h all reach 85% or above, and the Trichoderma asperellum TS7-1 has high-concentration antibiotic tolerance, degradation rate and degradation spectrum obviously superior to those of other strains in the prior art. The trichoderma asperellum TS7-1 is directly separated from a natural soil body which is not polluted by antibiotics, has no animal and plant pathogenicity hidden danger, has no microbial toxicity to degradation products of macrolide antibiotics, avoids secondary pollution, and has excellent environmental safety.
Owner:UNIV OF SCI & TECH OF CHINA

Application of antibacterial peptide

The invention discloses an application of an antibacterial peptide and an application of the antibacterial peptide in preparation of antibacterial drugs for treating carbapenem-resistant pseudomonas aeruginosa, klebsiella pneumoniae (ATCC700603), escherichia coli (ATCC25922), staphylococcus aureus and methicillin-resistant staphylococcus aureus, the antibacterial peptide is characterized in that the sequence is w-r-r-w-k-r-w-w-r-r, and the sequence is shown in the description. All amino acids are D-type amino acids; the antibacterial peptide can be used as an antibacterial substance in wash supplies, food preservative additives, medical consumable antibacterial agents and cosmetics, can be synthesized through an Fmoc solid-phase chemical method, and is low in synthesis difficulty and good in in-vivo antibacterial activity. Particularly, the antibacterial peptide has broad-spectrum killing activity against carbapenem pseudomonas aeruginosa, klebsiella pneumoniae (ATCC700603), escherichia coli (ATCC25922), staphylococcus aureus and methicillin-resistant staphylococcus aureus, the cell survival rate of the antibacterial peptide within the range of medium and low concentration (2 mu g / mL-32 mu g / mL) reaches half or more, the toxicity is small, the toxicity is almost avoided, the operability is high, and the antibacterial peptide can be widely applied to the field of medical application. The cost is low.
Owner:CHONGQING UNIV OF TECH

Poplar and phellinus igniarius polysaccharide SVP-1 as well as preparation method and application thereof

The invention discloses poplar and phellinus igniarius polysaccharide SVP-1 as well as a preparation method and application thereof, and belongs to the field of biological medicines. The poplar phellinus igniarius polysaccharide SVP-1 provided by the invention has remarkable anti-tumor activity, and can effectively inhibit proliferation, invasion and migration of tumor cells so as to block malignant progression of tumors. The structure is clear, the preparation method is controllable, the stability and biological activity of polysaccharide components are ensured, and a reliable basis is provided for development of antitumor drugs. When the traditional Chinese medicine composition is used together with radiotherapy and chemotherapy medicines, a synergistic effect can be achieved, the sensitivity of tumors to treatment can be improved, the toxic and side effects of radiotherapy and chemotherapy can be relieved, and the effects of reducing toxicity and increasing efficiency are achieved. According to the combined treatment strategy, the curative effect of the existing tumor therapy can be remarkably improved, meanwhile, adverse reactions are reduced, and a new optimization scheme is provided for clinical tumor treatment.
Owner:JILIN AGRICULTURAL UNIV

Groundwater pollution early warning index determination method and system for sea-land interaction zone chemical industry park

The invention discloses a sea-land interaction zone chemical industry park groundwater pollution early warning index determination method and system, and the method comprises the steps: building a pollutant directory according to the hydrogeological conditions of a chemical industry park, and dividing the pollutant directory into inorganic pollutants and organic pollutants; constructing an entropy weight method-mathematical fuzzy evaluation model to carry out comprehensive evaluation on the inorganic pollutants to obtain an index sequence of the inorganic pollutants; evaluating the exposure potential EP and the toxicity potential HP of the organic pollutants according to the actually measured data of the organic pollutants and considering various evaluation parameters of the organic pollutants; obtaining final organic pollution indexes according to the EP and the HP of the organic indexes, and sorting the final organic pollution indexes; and according to the sorting result of the inorganic pollution indexes and the organic pollution indexes, determining the early warning indexes of the inorganic and organic pollutants in the underground water in the chemical industry park by combining the underground water quality standard. According to the method, objectivity and scientificity of pollutant identification are improved, and the problems that current pollution index selection is high in subjectivity, single in evaluation dimension, poor in regional applicability and the like are solved.
Owner:WUHAN UNIV

WK7 series antibacterial peptide and application thereof in aspects of resisting bacteria and preventing and treating diabetic foot, pneumonia and septicemia

The invention belongs to the technical field of polypeptides and biological medicines, and particularly relates to a WK7 series antibacterial peptide and application thereof in the aspects of resisting bacteria and preventing and treating diabetic foot, pneumonia and septicemia. According to the invention, a linear peptide WK7-line with an amino acid sequence of WKRWKRW is used as a minimum active unit, and modification is carried out to form a plurality of linear modified peptides; meanwhile, a cyclic peptide WK7-cyl is formed on the basis of the linear peptide WK7-line through cyclization, and the cyclic peptide WK7-cyl is further modified to form an annular modified peptide. The linear peptide WK7-line, the linear modified peptide, the cyclic peptide WK7-cyl and the cyclic modified peptide jointly form the WK7-series antibacterial peptide, and the WK7-series antibacterial peptide is artificially synthesized polypeptide, is small in molecular weight, easy to synthesize, free of cytotoxicity, almost free of hemolysis risk, high in sterilization speed and broad-spectrum antibacterial property and can be used for preparing the antibacterial peptide. The traditional Chinese medicine composition has a certain effect on prevention and treatment of diabetic foot ulcer, pneumonia and septicemia.
Owner:KUNMING INST OF ZOOLOGY CHINESE ACAD OF SCI

Antibacterial peptide Mh-GC21 as well as precursor and application thereof

The invention belongs to the technical field of antibacterial peptides, and particularly relates to an antibacterial peptide Mh-GC21 as well as a precursor and application thereof. The amino acid sequence of the antibacterial peptide Mh-GC21 provided by the invention is as shown in SEQ ID NO.1, and two cysteines are oxidized to form a pair of intermolecular disulfide bonds; the C tail end of the antibacterial peptide Mh-GC21 is subjected to amidation modification. The antibacterial peptide Mh-GC21 provided by the invention is from microhyla microcarpa, has broad-spectrum antibacterial activity, has relatively good antibacterial and bactericidal effects on standard strains of acinetobacter baumannii, escherichia coli and staphylococcus aureus and clinically sourced drug-resistant strains, and can be used for targeted destruction of cell membranes of bacteria, removal of biological membranes and inhibition of formation of the biological membranes. Moreover, the antibacterial peptide Mh-GC21 has the advantages of good stability, no hemolytic activity and cytotoxicity, and difficulty in inducing strains to generate drug resistance.
Owner:GUANGDONG LABORATORY OF SOUTHERN OCEAN SCIENCE AND ENGINEERING (GUANGZHOU)

Pollutant toxicity assessment method and device based on RAG enhancement and knowledge graph reasoning, equipment and medium

The invention discloses a pollutant toxicity assessment method and device based on RAG enhancement and knowledge graph reasoning, equipment and a medium, and relates to the technical field of pollutant assessment, and the method comprises the steps: constructing a standardized toxicological knowledge graph through multi-source data collection and preprocessing; by combining RAG enhanced retrieval and knowledge graph reasoning, a toxicity reasoning path and an evaluation index are rapidly generated, meanwhile, interpretable content is provided, multi-source heterogeneous data fusion and self-adaption to spectral characteristic differences of different sites are achieved, the problems that traditional evaluation is low in efficiency, high in cost, insufficient in knowledge utilization and the like are effectively solved, rapid and accurate evaluation is achieved, and the evaluation efficiency is improved. And the credibility and the interpretability of the evaluation result are enhanced.
Owner:CENT SOUTH UNIV

Hybrid peptide with immunoregulation and anti-oxidation functions as well as preparation method and application of hybrid peptide

The invention relates to the technical field of genetic engineering and biological agents, in particular to a hybrid peptide with immunoregulation and anti-oxidation functions and a preparation method and application of the hybrid peptide. The polypeptide provided by the invention has immunoregulation and antioxidation functions at the same time, and in a normal or immunosuppression state, the polypeptide can significantly improve the immunologic function of a body and reduce the damage of immunosuppression to the body; the oxidation resistance of cells and organisms can be enhanced; meanwhile, the polypeptide has the advantages of low cytotoxicity, high safety, simplicity and convenience in preparation and low cost, can be used as an ideal immunomodulator and an antioxidant, is widely applied to the fields of medicines, foods, health care, feeds, nutrition and the like of human and animals, and has very good application potential and value.
Owner:CHINA AGRI UNIV

Antibacterial breathable dressing patch and preparation method thereof

The invention discloses an antibacterial breathable dressing patch and a preparation method thereof, and belongs to the field of medical dressings, the antibacterial breathable dressing patch comprises a Janus type dressing patch layer which is a composite film containing a hydrocolloid matrix, pH response antibacterial microspheres and bioactive glass nanoparticles; the super-hydrophobic electrostatic spinning outer layer is a super-hydrophobic electrostatic spinning fiber membrane, and the super-hydrophobic electrostatic spinning outer layer and the Janus type dressing skin-attaching layer are compounded to form an asymmetric Janus structure, intellectualization and precision of the antibacterial effect are achieved, and the risks of cytotoxicity and bacterial drug resistance possibly caused by long-term exposure to an antibacterial agent are reduced to the maximum extent; a multi-mechanism and synergistic antibacterial defense system is constructed, more comprehensive and firm protection is provided for wounds, the air permeability and moisture permeability are excellent, a dry and moist ideal healing environment is created for the wounds, the biocompatibility is good, the use safety is high, the wound healing agent is mild to human tissues, the irritation is low, the allergic reaction risk is small, the safety is high, and the wound healing effect is good. The long-term use is facilitated.
Owner:SAILAISI LNDUSTRIAL (HANGZHOU) CO LTD