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437results about "Carbon active ingredients" patented technology

Metal-doped carbon quantum dots, preparation thereof and application of metal-doped carbon quantum dots in nano antibacterial agent

The invention discloses a metal-doped carbon quantum dot as well as preparation and application of the metal-doped carbon quantum dot in a nano antibacterial agent, citric acid, urea and tea polyphenol are taken as precursors, metal salt is added, carbon dot synthesis and metal ion doping are synchronously completed in one step through a hydrothermal method, and the metal-doped carbon quantum dot is prepared; the surfaces of the metal-doped carbon quantum dots are negatively charged, and the metal-doped carbon quantum dots have peroxidase-like activity and catalase-like activity at the same time; the metal ions adopt any one of Fe < 3 + >, Cu < 2 + > and Ce < 3 + >; the metal-doped carbon quantum dots are in a sphere-like shape. The metal-doped carbon quantum dots prepared by the preparation method disclosed by the invention have peroxidase-like activity and catalase-like activity at the same time through precise doping of metal ions, and the two activities have a synergistic effect in an oral periodontitis microenvironment, so that a good antibacterial effect is achieved.
Owner:HEFEI UNIV OF TECH

Nitrogen-doped biomass-based fluorescent carbon quantum dot as well as preparation method and application thereof

The invention provides a nitrogen-doped biomass-based fluorescent carbon quantum dot, a preparation method and application, and relates to the technical field of carbon nanomaterials, the method comprises the following steps: mixing a biomass material and deionized water under an ultrasonic condition, adding a nitrogen source, and carrying out ultrasonic dispersion to obtain a uniformly dispersed to-be-reacted solution; reacting the to-be-reacted solution at a preset temperature for a preset time to obtain a mixed product solution; and filtering and dialyzing the mixed product solution to obtain the nitrogen-doped biomass-based fluorescent carbon quantum dot solution. The nitrogen-doped biomass-based fluorescent carbon quantum dot prepared by the method shows a stable fluorescent effect and good water solubility, the free radical clearance rate can reach 90% or above, and the antibacterial rate can reach 99% or above. The method can be used in the fields of drug sustained release, bioimaging and the like.
Owner:SHENZHEN THIN CONDUCTOR TECH CO LTD +1

Fibrous constructs with therapeutic material particles

Sheets of material used in medical devices and filters are disclosed. The sheets may include a fibrous mat including a plurality of microfibers. The microfibers may include a polymer matrix and a plurality of additive particles. The additive particles may include carbon material particles, therapeutic micro particles, and any combination thereof. Medical devices and filters that use the sheets are disclosed. Methods of producing the sheets are also disclosed.
Owner:MERIT MEDICAL SYSTEMS INC

Two-dimensional bionic nanostructure assembled based on receptor-ligand acting force and preparation method thereof

The invention discloses a two-dimensional bionic nanostructure assembled based on receptor-ligand acting force and a preparation method of the two-dimensional bionic nanostructure. The core characteristic of the two-dimensional bionic nanostructure is that the ultrafine particles modified by ligand molecules are anchored on the surface of a cell membrane fragment with a corresponding receptor expressed on the surface through a receptor-ligand effect, so that uniform compounding of the ultrafine particles and the cell membrane is realized; the bottlenecks of low compounding efficiency, functional site masking and the like caused by high surface curvature of small-size particles in the traditional cell membrane complete wrapping technology are broken through. According to the preparation method disclosed by the invention, the binding force between the cell membrane and the ultramicro particles is stronger, the off-target phenomenon of the ultramicro particles in the in-vivo circulation process can be avoided, the response release of the ultramicro particles under the competition effect in a lesion region expressed by a high-abundance receptor can be realized, and the preparation method has a good application prospect in the aspect of precise drug delivery. Meanwhile, the in-vivo circulation time of the ultrafine particles is prolonged by membrane loading, the biocompatibility of the ultrafine particles is improved, and the effectiveness and low toxicity of a drug delivery system are ensured.
Owner:FUZHOU UNIV

Bionic nano-drug for resisting subcutaneous drug-resistant bacterial infection as well as preparation method and application of bionic nano-drug

The invention belongs to the technical field of medicines, and particularly relates to a bionic nano-drug for resisting subcutaneous drug-resistant bacterial infection as well as a preparation method and application thereof. Dopamine hydrochloride is added in the synthesis process of a metal-organic framework to prepare a dandelion-shaped carbon nano-enzyme precursor, then the nano-enzyme precursor is carbonized to obtain a carbon nano-enzyme with targeting property, photoresponse and peroxidase activity, and finally berberine hydrochloride is loaded on the carbon nano-enzyme to obtain the bionic nano-drug. The bionic nano-drug provided by the invention firstly has good biocompatibility, secondly has a unique dandelion-shaped form, is beneficial to playing a targeting role, and finally has relatively strong light response capability in a near-infrared region, and can synergistically and efficiently sterilize through action mechanisms of antibacterial drugs, photothermal therapy and chemical kinetics, so that the bionic nano-drug has a good application prospect. The compound has an important application value in preparation of drugs for treating subcutaneous drug-resistant bacterium infection.
Owner:JILIN AGRICULTURAL UNIV

Preparation method of ocimum gratissimum carbon dots and application of ocimum gratissimum carbon dots in antibacterial drugs and food preservation

The invention discloses a preparation method of ocimum gratissimum carbon dots and application of the ocimum gratissimum carbon dots in antibacterial drugs and food preservation. The preparation method of the ocimum gratissimum carbon dots comprises the following steps: performing steam distillation on ocimum gratissimum leaves to remove essential oil, drying in the shade, and crushing; adding an alcohol solvent into the powder, extracting, filtering, concentrating and drying to obtain an alcohol extract; dispersing the alcohol extract in distilled water, and stirring and pyrolyzing on a heating table; and diluting the pyrolysis product with distilled water, centrifuging, taking supernate, filtering with a filter membrane, dialyzing, and freeze-drying to obtain the carbon dots. The obtained carbon dots have a carbon dot-vesicle coexisting structure, and the average particle size is 5.732 + / -0.5 nm. The prepared ocimum gratissimum carbon dots can be applied to preparation of antibacterial drugs, especially drugs for inhibiting the activity of bacillus cereus and listeria, and the field of food preservation, and have the advantages of being wide in raw material source, simple in preparation method, low in cost, environmentally friendly and the like.
Owner:YUNNAN NORMAL UNIV

Preparation process of carbon dots for killing helicobacter pylori and application of carbon dots in oral pharmaceutical preparation

The invention relates to the technical field of pharmaceutical preparations, in particular to a preparation process of carbon dots for killing helicobacter pylori and application of the carbon dots in oral pharmaceutical preparations. The preparation method comprises the following steps: mixing microcrystalline cellulose and glycerol, freezing and crushing at an ultralow temperature, and selectively hydrolyzing by combining citric acid-malic acid mixed acid liquor to efficiently prepare a high-crystallinity cellulose nanocrystal template; the controllable synthesis of the carbon dots is realized by utilizing the hydrogen-bond interaction of hydroxyl / carboxyl on the surface of the cellulose nanocrystal and the nitrogen doping effect in the polymerization and carbonization process of citric acid and urea. Besides, when a sodium alginate-chitosan double-layer structure is constructed, carbon dots are introduced into the inner layer to endow the inner layer with special performance, a protein-polysaccharide network is formed on the outer layer through transglutaminase enzymatic crosslinking, and the oxidation resistance and mechanical strength are enhanced through secondary curing of tea polyphenol. According to the invention, food-grade raw materials are used for realizing high-efficiency antibiosis, the oral preparation safety specification is met, and the clinical transformation potential is realized.
Owner:ENYUAN TECH WUXI CO LTD

Anti-inflammatory and anti-oxidative stress nano-enzyme Cu5.4O-coated CNDs with cascade enzyme activity and application of nano-enzyme Cu5.4O-coated CNDs

The invention belongs to the technical field of hepatopathy treatment drugs, and particularly relates to an anti-inflammatory and anti-oxidative stress nano-enzyme Cu5.4O atCNDs with cascade enzyme activity and application of the nano-enzyme Cu5.4O atCNDs. The nano-enzyme Cu5.4O-coated CNDs is prepared by the following steps: dissolving CuCl2 in a carbon dot aqueous solution, reacting for 10-12 minutes at the temperature of 75-80 DEG C, then adding an L-ascorbic acid aqueous solution, regulating the pH value to 7.0-8.0 by using a NaOH solution, reacting for 10-12 hours at the temperature of 75-80 DEG C, after the reaction is finished, centrifuging to remove precipitates, dialyzing supernate, and freeze-drying to obtain the Cu5.4O-coated CNDs. Research results of the invention prove that the nano-enzyme Cu5.4O-coated CNDs has the potential of treating various acute liver injury diseases, and is an intervention strategy with a good clinical application prospect.
Owner:XI AN JIAOTONG UNIV

Ligusticum wallichii carbon dots, medicine and application

The invention relates to the technical field of traditional Chinese medicine carbon dots, in particular to ligusticum wallichii carbon dots, a medicine and application. The ligusticum wallichii carbon dots disclosed by the invention are obtained by carbonizing ligusticum wallichii by a hydrothermal method, wherein the hydrothermal method carbonization is a hydrothermal reaction at 175-195 DEG C for 8-12 hours; research finds that the ligusticum wallichii carbon dots have the characteristic of treating myocardial apoptosis caused by myocardial ischemia reperfusion injury, and compared with ligusticum wallichii carbon dots synthesized by ligustrazine and a pyrolysis method, the ligusticum wallichii carbon dots have the advantage that the heart function can be better recovered. The invention provides a new candidate drug for treating myocardial ischemia reperfusion injury.
Owner:XI AN JIAOTONG UNIV

Graphene acupoint herbal patch (AHP) for warming uterus and relieving pain, method of preparation and use thereof

A graphene acupoint herbal patch (AHP) for warming uterus and relieving pain, and a method of preparation and use thereof are provided, belonging to the technical field of traditional Chinese medicines (TCMs). The graphene AHP for warming uterus and relieving pain includes a TCM, graphene, a hot melt adhesive, a far-infrared ceramic powder, a heat sensitizer, camphor, and menthol. The graphene AHP for warming uterus and relieving pain produces no acute toxicity, has no skin irritation, and does not induce allergies. In the graphene AHP for warming uterus and relieving pain, the release rate of the small drug molecules tetrahydropalmatine, imperatorin, eugenol, and paeoniflorin is higher than that of an ordinary AHP for warming uterus and relieving pain, thus exhibiting a more obvious analgesic effect.
Owner:CHANGCHUN UNIV OF CHINESE MEDICINE

Preparation method of antibacterial dual-oxygen-supply manganese-doped carbon dot-oxygen-carrying microbubble

The invention discloses a preparation method of antibacterial dual-oxygen-supply manganese-doped carbon dot-oxygen-carrying microbubbles, and belongs to the field of preparation of medical configuration products, and the preparation method comprises the following steps: attaching biotinylated manganese-doped carbon dots to oxygen-carrying microbubbles by using biotin-avidin connection to prepare micron-level manganese-doped carbon dot-oxygen-carrying microbubbles; the size of the micron-level manganese-doped carbon dot-oxygen-carrying microbubble is 1000-2500nm. The antibacterial dual-oxygen-supply manganese-doped carbon dot-oxygen-carrying microbubble prepared by the invention has the advantages of simple synthesis, clear structure, adjustable size and the like, and the material preparation method is simple, mild in reaction condition and suitable for large-scale production; manganese-doped carbon dot-oxygen-carrying microbubbles provide dual oxygen supply to enhance the sonodynamic therapy effect, so that efficient antibacterial activity is achieved, angiogenesis is promoted, wound healing is accelerated, and the method is a promising wound healing therapy method.
Owner:NINGBO UNIV

Liquid metal-based anti-inflammatory drug as well as preparation method and application thereof

The invention discloses a liquid metal-based anti-inflammatory drug as well as a preparation method and application thereof, and relates to the technical field of biomedicine. The preparation method of the liquid metal nanoparticles comprises the steps that liquid metal is placed in a solvent, a dispersing agent is added, ultrasonic dispersion and gradient centrifugation are conducted, and the liquid metal nanoparticle suspension preparation is obtained. The concentration of the liquid metal in the liquid metal nanoparticle suspension preparation is 5-30 mg / mL, and the size of the liquid metal nanoparticles is 50-500 nm; the liquid metal is gallium, indium, tin or alloy thereof; the dispersing agent is ligand molecules for realizing separation of the liquid metal nanoparticles by forming an end-capping layer on newly-generated liquid drops in at least one mode of static electricity, cross-linking and covalent replacement. The liquid metal nanoparticles can be directly used for treating infectious bone defect diseases, and other auxiliary agents can also be added to prepare anti-inflammatory drugs; meanwhile, the antibacterial and osteogenesis characteristics are achieved, and the dual requirements for treating infectious bone defects, inhibiting infection and promoting tissue regeneration are met.
Owner:WUHAN UNIV

Enzyme response antibacterial carbon dots as well as preparation method and application thereof

The invention relates to an enzyme response antibacterial carbon dot and a preparation method and application thereof.The carbon dot takes a copper-doped carbon dot as a core and is covalently grafted with a hyaluronic acid shell layer through amidation reaction to form a composite nano material Cu-CDs (at) HA, specifically, soluble copper salt and folic acid are subjected to a hydrothermal reaction to obtain the copper-doped carbon dot, carboxyl is activated through EDC / NHS in a buffer system, and the carbon dot is prepared. And performing grafting reaction with hyaluronic acid to obtain a target product. The hyaluronidase-containing antibacterial composition can be specifically degraded and release antibacterial components under the action of hyaluronidase, shows good bacterial responsive bactericidal performance, has the minimum inhibitory concentrations of 8 g / mL and 16 g / mL for staphylococcus aureus and escherichia coli respectively, and has peroxidase-like activity and free radical scavenging capacity. The antibacterial carbon dots can be used for preparing intelligent wound dressings, antibacterial coatings and other biomedical materials, and have the advantages of responsive drug release, efficient antibacterial property and promotion of wound repair.
Owner:TAIYUAN UNIVERSITY OF TECHNOLOGY

Traditional Chinese medicine composition for treating liver cirrhosis and preparation method thereof

The invention discloses a traditional Chinese medicine composition for treating liver cirrhosis and a preparation method thereof, and belongs to the technical field of anti-liver cirrhosis traditional Chinese medicines. The traditional Chinese medicine composition is prepared from the following raw materials in parts by mass: 10g of polyporus umbellatus, 10g of herba artemisiae scopariae, 10g of radix bupleuri, 10g of charred rheum officinale, 10g of rhizoma coptidis, 10g of charred radix scutellariae, 10g of fructus gardeniae, 15g of herba hyperici japonici, 10g of radix curcumae, 10g of rhizoma alismatis, 10g of radix paeoniae rubra, 10g of radix salviae miltiorrhizae, 10g of cortex magnoliae officinalis, 10g of fructus aurantii, 10g of rhizoma cyperi, 10g of rhizoma sparganii, 10g of rhizoma curcumae, 20g of plantain herb, 10g of turtle shell, 10g of pericarpium arecae, 25g of oven earth and 2g of charred colla corii asini. By providing the traditional Chinese medicine composition formula for treating the liver cirrhosis, the effective rate and the cure rate of the medicine for treating the liver cirrhosis are improved.
Owner:ZHONGSHAN SECOND PEOPLES HOSPITAL

Inhibition of cancer cell viability by nanocomposites of graphitic C3N4, Fe2O3, and MgAl2O4

A method of inhibiting cancer cell viability may include contacting cancer cells and a nanocomposite including graphitic C3N4, Fe2O3, and MgAl2O4 in a mass relationship to each other in a range of 5 to 15:2 to 7:75 to 95. The nanocomposite is in a concentration range of 7.5 micrograms per milliliters (μg / mL) to 500 μg / mL, thereby inhibiting the growth of the cancer cells by at least 85%.
Owner:IMAM MOHAMMAD IBN SAUD ISLAMIC UNIV

Preparation method and application of chlorogenic acid carbon quantum dot microsphere capsule

The invention discloses a preparation method and application of a chlorogenic acid carbon quantum dot microsphere capsule, a natural active product chlorogenic acid (CHA) in coffee is used as a raw material, and chlorogenic acid carbon quantum dots (CHA CDs) with anti-inflammatory and antioxidant activity are synthesized through a hydration method; then, the chlorogenic acid carbon quantum dots (CHACDs) are packaged with chitosan, and meanwhile, the chitosan on the outer layer of the capsule is modified with the DNA aptamer, so that the chlorogenic acid carbon quantum dot microsphere capsule Apt-CS (at) CHA CDs are obtained. The chlorogenic acid carbon quantum dot microsphere capsule disclosed by the invention not only has anti-inflammatory and antioxidant activity, but also can regulate intestinal flora, enhance intestinal barrier function and immune conditions; moreover, the microsphere capsule can be retained in the intestinal tract for a long time, so that the microsphere capsule can resist inflammation and remove high-level reactive oxygen species (ROS), can be retained in the intestinal tract for a long time and play a role in regulating intestinal flora, finally, the disease development of IBS is comprehensively relieved, and the microsphere capsule has a very good application prospect.
Owner:CHONGQING UNIVERSITY THREE GORGES HOSPITAL

Alendronic acid modified ZIF-8 encapsulated TPP-carbon dot bone targeting nano material as well as preparation method and application thereof

The invention relates to the technical field of biomedical materials, in particular to an alendronate-modified ZIF-8 encapsulated TPP-carbon dot bone targeting nano-material and a preparation method and application thereof.The alendronate-modified ZIF-8 serves as a carrier, TPP-modified carbon dots are encapsulated in the carrier, citric acid, urea and cerium salt serve as raw materials of the TPP-modified carbon dots, and the alendronate-modified ZIF-8 encapsulated TPP-carbon dot bone targeting nano-material is prepared through a one-step method. After cerium-doped carbon quantum dots are synthesized through a hydrothermal method, TPP is grafted through an amide method, alendronate endows the material with a bone targeting function, and TPP modified carbon dots endow the material with antioxidant and mitochondrial targeting functions. According to the invention, the bone targeting property is excellent, and bone focuses are efficiently enriched; the anti-oxidation and anti-inflammatory capacities are high, and the infected microenvironment can be improved; zIF-8 packaging is stable, and functional components can be controllably released; multiple components cooperate to promote bone repair, accumulation of non-target organs is little, and the composition is safe, reliable and suitable for treatment of various bone-related diseases.
Owner:ZHANGJIAGANG HOSPITAL OF TRADITIONAL CHINESE MEDICINE

Curcumin carbon dot nano-enzyme and application thereof in preparation of medicine for preventing and treating lung injury

The invention provides curcumin carbon dot nano-enzyme and application thereof in preparation of medicine for preventing and treating lung injury, a preparation method of the curcumin carbon dot nano-enzyme comprises the following steps: 1) adding tobacco powder, reduced glutathione and curcumin into formamide, stirring, performing ultrasonic treatment, and performing high-temperature reaction; and 2) after the reaction is finished, cooling to room temperature, filtering, collecting filtrate, transferring into a dialysis bag, enabling the dialyzed solution to pass through a water film, and freeze-drying to obtain the curcumin carbon dot nano-enzyme. The invention belongs to the technical field of nano-enzymes, and the curcumin carbon dot nano-enzyme provided by the invention has a dual-wavelength fluorescence emission characteristic, realizes effective utilization of tobacco leaf wastes, and is expected to play an important role in preparation of medicines for preventing and treating lung injury.
Owner:GUIZHOU TOBACCO SCI RES INST

Multifunctional bionic hydrogel as well as preparation and application thereof in traumatic brain injury treatment

The invention provides multifunctional bionic hydrogel as well as preparation and application thereof in traumatic brain injury treatment, and belongs to the field of biomedical materials. The preparation method comprises the following steps: combining polydopamine modified hemoglobin nanoparticles with curcumin-based carbon quantum dots with anti-inflammatory activity, and embedding into bionic hyaluronic acid-collagen double-network hydrogel, so as to prepare the multifunctional bionic hydrogel. The hydrogel can effectively relieve neuron hypoxia, reduce apoptosis, promote the polarity of microglial cells to be converted into anti-inflammatory phenotype, and significantly down-regulate the expression of S100A8, thereby inhibiting pathological neural immune crosstalk. In a traumatic brain injury model, hydrogel implantation improves the pathological microenvironment, enhances endogenous nerve regeneration, and ultimately results in significant neurological function and cognitive recovery. The multifunctional bionic hydrogel prepared by the invention has a good application prospect in preparation of materials for preventing and / or treating traumatic brain injury.
Owner:SICHUAN UNIV

Method for treating myeloporphyria, X-linked protoporphyria or congenital erythropoietic porphyria using a glycine transport inhibitor

The present embodiments are directed to methods of using a glycine transporter inhibitor, e.g., a GlyT1 inhibitor, or a pharmaceutically acceptable salt, hydrate, or prodrug thereof, or a pharmaceutical composition thereof, to prevent or treat erythropoietic protoporphyria (EPP), X-linked protoporphyria (XLPP), and / or congenital erythropoietic porphyria (CEP), and their associated syndromes. The present application provides a method of treating erythropoietic protoporphyria (EPP), X-linked protoporphyria (XLPP), or congenital erythropoietic porphyria (CEP) in a subject, the method comprising administering to the subject a pharmaceutical composition comprising one or more glycine transporter 1 (GlyT1) inhibitors or pharmaceutically acceptable salts thereof, or one or more prodrugs of GlyT1 inhibitors or salts thereof.
Owner:DISC MEDICINE INC

Tellurium-doped carbon quantum dot as well as preparation method and application thereof

The invention discloses a tellurium-doped carbon quantum dot and a preparation method and application thereof, the tellurium-doped carbon quantum dot is obtained by using 2, 2 '-diaminodiphenyl telluride as a precursor, the average particle size is 1.9 nm, the thickness is about 2.1 nm, and the surface is rich in amino groups. And fixing (4-carboxybutyl) triphenylphosphonium bromide, 3-morpholinopropionic acid or 3-((4-methylphenyl) sulfonamide) propionic acid on the surfaces of the tellurium-doped carbon quantum dots to prepare Mito-Te-CDs, Lyso-Te-CDs and ER-Te-CDs with an organelle targeting function. The Mito-Te-CDs, the Lyso-Te-CDs and the ER-Te-CDs are good in biocompatibility, can be used as fluorescent probes for targeted imaging of organelles, can be used for recognition and removal of superoxide anions in specific organelles, have a protection effect on cells and can be used for effectively treating acute kidney injury.
Owner:HANGZHOU YAOXINPU HEALTH MANAGEMENT SERVICE CO LTD

Antibacterial and anti-inflammatory bio-based carbon dot-photo-crosslinking in-situ adhesion hydrogel as well as preparation method and application thereof

ActiveCN119700649ASenses disorderAntisepticsCorneal woundNitrobenzene
The invention provides antibacterial and anti-inflammatory bio-based carbon dot-photo-crosslinking in-situ adhesion hydrogel, which is prepared by the following steps: preparing bio-based carbon dots from curcumin and carboxymethyl chitosan, mixing the bio-based carbon dots with double-bond collagen and o-nitrobenzene functionalized hyaluronic acid, and carrying out chemical crosslinking under ultraviolet irradiation to prepare the hydrogel. The invention further provides a preparation method and application of the antibacterial and anti-inflammatory bio-based carbon dot-photo-crosslinking in-situ adhesion hydrogel. The invention provides a multifunctional biological enlightenment hydrogel matrix, which not only has strong tissue adhesion, but also has antibacterial, anti-inflammatory and antioxidant characteristics, and can be used for repairing seriously infected cornea wounds. As a cornea substitute, the hydrogel has wound sealing performance, transparency and appropriate mechanical strength, and is the key characteristic of the suture-free hydrogel. In-vitro and in-vivo experiments prove that the hydrogel not only has good biocompatibility, but also can remodel a microenvironment through antibacterial infection, antioxidant and anti-inflammatory effects, so that wound healing is accelerated.
Owner:SICHUAN UNIV

Copper-based heterojunction sound-sensitive agent as well as preparation method and application thereof

The invention relates to a copper-based heterojunction sound-sensitive agent and a preparation method and application thereof, Cu2O is etched by Se2-to obtain hollow Cu2-xSe, and then graphene quantum dots are loaded on the surface of the Cu2-xSe to obtain the copper-based heterojunction sound-sensitive agent. The copper-based heterojunction sonosensitizer prepared by the preparation method disclosed by the invention not only has efficient sonodynamic and chemical dynamic properties, but also has the capability of consuming glutathione (GSH) in a tumor microenvironment. In addition, the heterojunction sound-sensitive agent can also cause immunotherapy, and strong immune response is caused to achieve the capability of killing tumors.
Owner:SHANGHAI SIXTH PEOPLES HOSPITAL

Nitrogen / sulfur co-doped chiral iron monatomic carbon dot as well as preparation method and application thereof

The invention relates to a nitrogen / sulfur co-doped chiral iron monatomic carbon dot and a preparation method and application thereof.The preparation method of the nitrogen / sulfur co-doped chiral iron monatomic carbon dot comprises the steps that dimethyl formamide, iron phthalocyanine and cysteine serve as raw materials, and a nitrogen / sulfur co-doped chiral iron monatomic carbon dot solution is synthesized in one step through a hydrothermal synthesis method; the preparation method comprises the following steps: firstly preparing an iron monatomic carbon dot, then carrying out chiral amino acid modification on the surface of the iron monatomic carbon dot through an amido bond to enhance the chiral structure characteristic, and finally obtaining nitrogen / sulfur co-doped chiral iron monatomic carbon dot powder through centrifugation, dialysis and freeze drying. The nitrogen / sulfur co-doped chiral iron monatomic carbon dot has high chiral dependence catalytic activity, shows catalase-like activity, photodynamic activity and photo-thermal activity at the same time, and can promote accumulation of free iron in bacterial cells and finally induce ferroptosis of bacteria through chiral regulation and control of activity of Fur, FtnA and other bacterial metal transporters.
Owner:BENGBU MEDICAL COLLEGE

Methods of treating erythropoietic protoporphyria, x-linked protoporphyria, or congenital erythropoietic porphyria with glycine transport inhibitors

PendingUS20250262204A1Heavy metal active ingredientsNervous disorderCongenital erythropoietic porphyriaPharmaceutical drug
The present embodiments are directed to methods of using glycine transporter inhibitors, such as GlyT1 inhibitors, or pharmaceutically acceptable salts, solvates or prodrugs thereof, or pharmaceutical compositions thereof, for preventing or treating erythropoietic protoporphyria (EPP), X-linked protoporphyria (XLPP), and / or congenital erythropoietic porphyria (CEP), and related syndromes thereof.
Owner:DISC MEDICINE INC

Carbon dot nano-enzyme as well as preparation method and application thereof

The invention relates to the technical field of biological medicine, and discloses a RuCDzyme nano-enzyme preparation method, which comprises: S1, dissolving carbon quantum dots (CDs) and ruthenium metal salt in a solvent A to obtain a mixed solution; s2, adjusting the pH value of the mixed solution to be alkaline, adding a sodium borohydride solution into the mixed solution, and stirring to react for 3-6 hours; after the reaction is finished, dialyzing reaction liquid to remove unreacted reactants and the solvent A, and performing freeze-drying treatment on the dialyzed reaction liquid to obtain the RuCDzyme nano-enzyme. The invention also discloses a preparation method of the TPP-coated RuCDzyme nano-enzyme, which comprises the following steps: adding EDC and NHS into a TPP-COOH solution, stirring and reacting for 30-60 minutes at 25-30 DEG C, then adding the RuCDzyme nano-enzyme into a reaction system, continuing stirring and reacting for 16-24 hours, dialyzing a reaction solution after the reaction is finished, removing unreacted reactants in the reaction solution, and freeze-drying the dialyzed reaction solution to obtain the TPP-coated RuCDzyme nano-enzyme. The RuCDzyme nano-enzyme and the TPP coated RuCDzyme nano-enzyme prepared by the invention have similar superoxide dismutase activity, similar catalase activity and similar glutathione peroxidase activity, and can efficiently remove active oxygen to achieve the effect of preventing, relieving or / and treating renal injury.
Owner:PEOPLES HOSPITAL OF HENAN PROV

Nano material with efficient antibacterial effect and preparation method thereof

The invention relates to the field of complex bone defect treatment, and discloses a nano material with an efficient antibacterial effect and a preparation method thereof.The preparation method comprises the steps that ammonium bismuth citrate and luteolin are mixed and dissolved in formamide, the mixture is put into a reaction kettle to react, a reaction solution is obtained, and Bi-Lu CDs in formamide is obtained after centrifugation and filtration; mixing the MSN-coated Bi-Lu CDs with amino-modified mesoporous silica microspheres, centrifuging, dispersing in deionized water, and drying in vacuum to obtain pure MSN-coated Bi-Lu CDs powder; the preparation method comprises the following steps: preparing a polyurethane dispersion liquid from polyurethane, spraying the polyurethane dispersion liquid on a quartz plate to form a polyurethane film, and spraying MSN and Bi-Lu CDs powder on the polyurethane film to carry out metal spraying treatment; a second precipitate is obtained; drying in vacuum to obtain J-Bi-LuCDs M (at) Au powder; the problems that in the prior art, due to the fact that a pure carbon dot material lacks active diffusion power, the treatment effect on complex tissue defects and bacterial biofilms is still limited, and a precursor material is poor in biocompatibility, not prone to dissolution and low in bioavailability are solved.
Owner:STOMATOLOGICAL HOSPITAL OF CHONGQING MEDICAL UNIV

Jelly preparation containing spherical adsorptive carbon

To provide a jelly composition containing spherical adsorptive carbon for improving uremic symptoms and delaying initiation of dialysis of chronic renal failure patients, which has more improved medication compliance than existing therapeutic agents.SOLUTION: The jelly composition contains spherical adsorptive carbon as an active ingredient, a gelling agent, a thickener, and spherical adsorptive carbon containing distilled water.SELECTED DRAWING: Figure 2
Owner:P2KBIO INC

Application of green alga-based carbon quantum dots in preparation of chikungunya virus infection resisting drugs or decontamination agents

PendingCN121818710ACosmetic preparationsToilet preparationsIn vivoChikungunya Virus Infection
The invention relates to the technical field of medicines, in particular to application of green alga-based carbon quantum dots in preparation of chikungunya virus infection resisting drugs or decontamination agents. The green algae-based carbon quantum dots belong to nano materials, and the green algae-based carbon quantum dots prepared by a hydrothermal method are good in water solubility, high in stability and high in biocompatibility. The application of the green alga-based carbon quantum dots in the chikungunya virus infection resisting medicine or decontamination agent is reported, the in-vivo and in-vitro antiviral effect is good, the application is reported for the first time internationally, and a new scheme is provided for prevention and treatment of chikungunya heat.
Owner:THE NAVAL MEDICAL UNIV OF PLA

Preparation method and application of lithospermum carbon nanodot with anti-adrenal cortex cancer

The invention discloses a preparation method and application of lithospermum carbon nanodots with an anti-adrenal cortical carcinoma function, and relates to the field of carbon dots, the lithospermum carbon nanodots are prepared by the following steps: mixing a lithospermum extract and deionized water, and carrying out a hydrothermal reaction to obtain a lithospermum carbon dot aqueous solution; the lithospermum carbon nanodots are used for preparing medicines for resisting adrenal cortex cancer. The lithospermum carbon nanodot provided by the invention has an inhibition effect on proliferation of adrenal cortex cancer cells, especially on the adrenal cortex cancer cells ACHN and 769-P. The lithospermum carbon nanodot disclosed by the invention has a remarkable proliferation inhibition effect on ACC (adrenal cortical carcinoma) cells. The adrenal cortex cancer is a rare and malignant tumor, and traditional treatment methods such as surgery and chemotherapy have certain limitations. Therefore, the development of a new targeted therapy strategy is very important. The lithospermum carbon nanodots can effectively inhibit proliferation of adrenal cortex cancer cells such as ACHN and 769-P through a certain molecular mechanism.
Owner:CHANGCHUN UNIV OF CHINESE MEDICINE