42 results about "Eosin" patented technology

Techniques for using combination stain types for machine learning models for digital pathology are described herein. In an example, a system accesses a first image of a sample comprising an immunohistochemistry (IHC) stain for a biomarker. The system accesses a second image of the sample comprising a hematoxylin and eosin (H&E) stain for nuclei. The system can segment tissue regions in the one or more first images and the second image, partitions the tissue regions in the one or more first images and the second image, and extracts features from the set of tiles using a feature extractor. The system can generate, by a machine-learning model, an output classification indicating a first phenotype based on the features extracted from the set of tiles. The machine-learning model can include one or more classifiers and an aggregation model that provides an aggregated output for the set of tiles.

The invention discloses application of hydrogen-rich water in preparation of a drug for treating Duchenne type muscular dystrophy, and particularly relates to the technical field of medicines.The random control experiment is adopted, homologous c57 mice serve as a normal control group, mdx mice are randomly divided into a model group and a hydrogen-rich water group, and the exercise ability is evaluated through a four-limb holding power test and a rotating bar test; detecting mouse creatine kinase by an enzyme-linked immunosorbent assay; carrying out hematoxylin-eosin, NADH-tetrazole reductase and improved Goori three-color dyeing, and carrying out cytochrome C oxidase, succinate dehydrogenase and SDH-COX combined dyeing to observe the pathological change of the skeletal muscle tissue; the invention discloses that the muscle injury condition of a Duchenne type muscular dystrophy model mouse is improved by the hydrogen-rich water through a mitochondrial protection mechanism, and the hydrogen-rich water has a relatively high application prospect and a relatively high economic value.

The present disclosure relates to an apparatus including one or more processors configured to receive a digitized image of a region of tissue demonstrating a disease, and containing cellular structures represented in the digitized image, each of the cellular structures being associated with a cell category of a plurality of cell categories; select a cellular structure of the cellular structures based on the cell category for the cellular structure; for the cellular structure selected, compute a set of contextual features; assign, based on the set of contextual features, the cellular structure to at least one cluster of a plurality of clusters; compute cluster features, the cluster features describing characteristics of the at least one cluster of the plurality of clusters; and generate a prediction that describes a pathologic or phenotypic state of the disease based, at least in part, on the cluster features and / or the set of contextual features.

The invention discloses a gallic acid-based cationic photodynamic antibacterial agent with sterilizing, anti-infection and wound healing promoting effects and a preparation method thereof, and belongs to the technical field of antibacterial agent synthetic chemistry. The cationic photodynamic antibacterial agent EY-QEGDM-MG is prepared by taking a natural compound gallic acid as a raw material and carrying out ring opening polymerization and quaternization reaction with photosensitizer eosin EY and ethylene glycol diglycidyl ether (EGDE), and the polymer shows an excellent antibacterial effect on escherichia coli and multi-drug-resistant MRSA germs under the action of illumination, and can be used for preparing a cationic photodynamic antibacterial agent EY-QEGDM-MG. The polymer has good blood compatibility and cell compatibility, in addition, the polymer can kill bacteria around infected wounds and can rapidly promote wound healing, and therefore the polymer can provide a new method for photodynamic antibacterial agents for treating the infected wounds in hospitals.

The invention belongs to the technical field of pathological tissue section staining, and particularly relates to a hematoxylin-eosin staining method based on short-time immersion and chaotropic standing diffusion and application of the hematoxylin-eosin staining method. According to the hematoxylin-eosin staining method based on short-time immersion and chaotropic standing diffusion, the staining process time can be remarkably shortened, the working efficiency of pathological section staining can be greatly improved, the staining solution consumption and the cross contamination risk can be effectively reduced, the experiment cost is saved, and the reliability of the staining result is guaranteed; meanwhile, the dyeing uniformity and repeatability can be remarkably improved, the result deviation caused by operation difference is reduced, the dependence on the experience of an operator is reduced, and standardized popularization and application are facilitated; besides, the dyeing method disclosed by the invention is wide in applicability, can meet the dyeing requirements of conventional paraffin sections, frozen sections and trace tissue samples, can meet the use requirements under different pathological detection scenes, and has outstanding clinical and scientific research application prospects.

The application discloses a colorectal cancer HER2 state classification method based on a double-branch cooperative optimization network and belongs to the technical field of pathological image processing. The application adopts a double-path cooperative optimization framework, combines knowledge transfer and cross-modal feature re-projection, efficiently extracts features related to the HER2 state from a conventional hematoxylin-eosin (H&E) staining section, and can directly accurately judge the HER2 state. Through the prior knowledge transfer and cross-modal feature re-projection mechanism, the application breaks through the bottlenecks such as insufficient utilization of prior knowledge and modal heterogeneity interference in the traditional method, and significantly improves the accuracy and robustness of the colorectal cancer HER2 state classification.

This invention discloses a method for degrading dyes using dye decolorization peroxidase, belonging to the field of biotechnology. This invention expresses a DyP (RhDyPB) derived from the bacterium *Rhodococcus jostii* in *Escherichia coli*. By adjusting the pH, manganese ion, hydrogen peroxide, and Tween-80 content during the decolorization process, the decolorization efficiency of RhDyPB and *E. coli* expressing RhDyPB on the anthraquinone dye Reactive Blue 19, the oxanthracene dye Eosin Y, the indigo dye Indigo Carmine, and the triphenylmethane dye Malachite Green is effectively improved.

Embodiments access a digitized image of tissue demonstrating non-small cell lung cancer (NSCLC), the tissue including a plurality of cellular nuclei; segment the plurality of cellular nuclei represented in the digitized image; extract a set of nuclear radiomic features from the plurality of segmented cellular nuclei; generate at least one nuclear cell graph (CG) based on the plurality of segmented nuclei; compute a set of CG features based on the nuclear CG; provide the set of nuclear radiomic features and the set of CG features to a machine learning classifier; receive, from the machine learning classifier, a probability that the tissue will respond to immunotherapy, based, at least in part, on the set of nuclear radiomic features and the set of CG features; generate a classification of the tissue as a responder or non-responder based on the probability; and display the classification.

An apparatus and methods for determining features in an image of a Hematoxylin and Eosin (H&E) stained tissue sample. An apparatus can be configured to apply a machine learning model to the H&E stained tissue sample image to determine features in the image. Applying the machine learning model can include performing convolution operations on the H&E stained tissue sample image to generate a plurality of initial feature maps, applying octave-convolution-first-layer operations on the initial feature maps to generate initial high-frequency feature maps and low-frequency feature maps, applying octave-convolution operations on the high-frequency initial feature maps to generate refined high-frequency feature maps, applying octave-convolution operations on the low-frequency initial feature maps to generate refined low-frequency feature maps, and applying octave-convolution last layer operations on the refined high-frequency feature maps and the refined low-frequency feature maps to produce combined feature maps.

The invention belongs to the technical field of artificial intelligence and digital pathology crossing, and relates to a regulatory T cell infiltration prediction method based on a digital pathological section. According to the method, a conventional hematoxylin-eosin dyed full-section digital image is used as input, and an analysis range is limited through tissue region segmentation and tumor region positioning; extracting multi-scale morphological characteristics of the visual field units in the tumor area, and constructing a graph neural network coding local-global space context; on the premise of taking an adjacent section immunohistochemical quantification or transcriptome immune deconvolution result as a supervision signal, improving the robustness of a cross-staining batch and a cross-scanning condition by adopting regression learning in combination with adversarial regularization and transfer learning; and outputting regulatory T cell infiltration density or grade and thermodynamic diagram visualization, and further giving uncertainty and spatial heterogeneity indexes for review and decision support.

The invention belongs to the technical field of preparation of tissue sections, and relates to a paraffin section of wheat roots and a preparation method thereof, the preparation method comprises the steps of fixing, dehydrating, transparentizing, waxing, embedding, slicing, spreading, baking, dewaxing to water, dyeing and sealing in sequence, a pre-dyeing step is carried out between the fixing step and the dehydrating step, and the pre-dyeing step is carried out between the pre-dyeing step and the dehydrating step. In the pre-dyeing step, a sarranine solution is adopted to treat the fixed wheat roots, and the treatment time is 12-20 h; treatment is carried out under the conditions of positive and negative pressure alternate circulation and temperature increase in the steps of dehydration, transparentizing and waxing; in the dyeing step, a 5% sodium sulfite solution is added for treatment, the treatment time is 0.5-1 h, and a 0.5% hydrochloric acid ethanol solution is added for treatment for 5-10 s. According to the method, the tissue structure in the obtained slice is clear and complete in combination with the optimized process, the dyeing contrast is distinct, the tissue structure of the wheat slice in a survival state is restored to a greater extent, and accurate obtaining of wheat research experiment results is facilitated.

A method of displaying biological image data in an interface application on a digital pathology analysis system includes: receiving a first user input pertaining to a first patient case; contacting a remote server for one or more stored biological image tiles corresponding to the received first user input, wherein the stored biological image tiles are derived from scans of microscope slides having one or more biological samples disposed thereon, the biological samples stained with hematoxylin and eosin or stained to identify presence of one or more biomarkers; receiving location information for the one or more stored biological image tiles corresponding to the first user input; retrieving the one or more stored biological image tiles pertaining to the first user input based on the received location information; and visualizing the retrieved one or more biological image tiles pertaining to the first user input.

The invention discloses a gastric cancer microsatellite instability state diagnosis model. The model comprises an instance segmentation module which is used for generating a segmentation mask for a hematoxylin eosin dyed image so as to generate an instance image block of a target pixel in a tissue related area; the feature extraction module is used for extracting initial features by utilizing a plurality of selected optimal pre-training models according to the input blocks; the dynamic weight distribution module is used for evaluating the importance of the plurality of optimal pre-training models on the primary features output by the same image and generating a fusion weight; the feature fusion module is used for fusing the primary features extracted by the plurality of optimal pre-training models into an advanced feature vector in combination with the fusion weight; the attention score calculation module is used for calculating attention scores of the high-level feature vectors of the different image blocks of the same image, and the multi-instance classifier is used for diagnosing the MSI state according to the high-level feature vectors of the image blocks which are ranked before M. Through the system, the instability state of the microsatellite can be accurately diagnosed.

The application belongs to the technical field of pathological tissue processing, and particularly relates to a pathological tissue staining automatic control method and a staining machine system. The method provided by the application detects and calculates the staining quality after each staining, adjusts the staining processing time of hematoxylin and eosin according to the staining quality, and replaces the staining solution if the staining processing time of hematoxylin and eosin exceeds the preset maximum value. The method provided by the application can effectively prolong the service life of the staining reagent, and can also ensure the uniformity and stability of pathological section staining.

The application provides an EA / OG dyeing solution, which comprises: a first reagent, which comprises 1.5 g / L to 4 g / L of eosin, 1 g / L to 5 g / L of fast green, 0.05 g / L to 0.5 g / L of orange G, 0-20 v / v% of an ethanol solution and an acetic acid-sodium acetate buffer solution with a pH of 5.0-5.8; and a second reagent, which comprises 0.1-1 w / v% of a phosphotungstic acid solution. The dyeing solution can realize accurate and uniform dyeing under alcohol-free or low-alcohol conditions, effectively improves the diagnosis efficiency, and has improved long-term stability and safety.

This invention relates to the field of medical testing, and particularly to a Wright-Gymsza staining solution and its application. The Wright-Gymsza staining solution of this invention comprises staining solution A and staining solution B. Staining solution A mainly consists of eosin Y, azurite-eosin A, methylene blue, cell fixative, and stabilizer, while staining solution B is a buffer solution. Experiments have shown that the Wright-Gymsza staining solution of this invention can stain normally for 27 months after preparation, solving the technical problems of uneven staining and dye residue on the staining platform after a period of time after opening.

The application belongs to the technical field of artificial intelligence and digital pathology, and relates to a regulatory T cell infiltration prediction method based on digital pathological sections. The method takes a conventional hematoxylin-eosin staining whole section digital image as input, limits the analysis range through tissue region segmentation and tumor region positioning, extracts multi-scale morphological features on a field unit in the tumor region, and constructs a graph neural network to encode local-global spatial context. Under the premise of taking adjacent section immunohistochemical quantification or transcriptome immunodeconvolution results as a supervision signal, regression learning is adopted, combined with adversarial regularization and transfer learning to improve the robustness of cross-staining batches and cross-scanning conditions. The output is the regulatory T cell infiltration density or grade and a heat map visualization, and further uncertainty and spatial heterogeneity indicators can be given for review and decision support.

The utility model relates to the technical field of kits, and discloses a hematoxylin eosin staining kit which comprises a kit body, a reinforcing assembly is arranged in the kit body, a kit cover is connected to the upper surface of the kit body, a buffer assembly is arranged in the kit body, and reagent bottles are arranged in the kit body. The reinforcing assembly comprises angle beads, the angle beads are arranged at the four corners of the lower portion in the box body, thickening plates are fixedly connected between the angle beads, reinforcing plates are fixedly connected to the tops of the angle beads, a protective frame is fixedly connected between the reinforcing plates, a protective plate is arranged at a cavity in the protective frame, and the protective plate is connected with the protective frame through a folding strip. According to the utility model, through the matching among the corner protectors, the thickening plates, the reinforcing plates, the protective frames and the continuous Z-shaped folding strips, the structural strength and the shock resistance of the kit are enhanced, the compression resistance and the shock resistance of the kit are effectively improved, and the reagent is ensured to be safer and more stable in the transportation and use processes.

The invention relates to the technical field of biology, in particular to an economical collagenous fiber dyeing kit and a preparation method thereof, and the economical collagenous fiber dyeing kit comprises the following reagents: modified iron hematoxylin, a Cole hematoxylin solution, a sirius red dyeing solution, a modified eosin dyeing solution, a modified fuchsin solution, a differentiation concentrated solution, an acidic differentiation solution, a bluing solution and a Scott bluing promoting solution. According to the invention, the modified iron-hematoxylin a liquid can enhance the solubility of the dye, delay oxidative browning and prevent precipitation, so that the nuclear dyeing is clearer and more uniform, and the modified iron-hematoxylin b liquid can stabilize the release of iron ions, reduce the excessive corrosion of hydrochloric acid and enhance the dyeing contrast; the mixing of the two ensures that cell nucleus staining has excellent selectivity, distinct contrast ratio and good reproducibility; the modified eosin dye liquor can maintain the pH stability of the dye liquor and enhance the permeability and affinity to cytoplasm; the modified fuchsin solution can rapidly form a uniform and stable working solution, and the dyeing effects of high specificity and distinct contrast on collagenous fibers are achieved.

The invention belongs to the technical field of microorganisms and biological medicines, and particularly relates to a Velvaet family gene A6653 and application thereof in increasing the yield of fusarium equiseti illinomycin. Specifically, the Velvet family gene A6653 is identified in Fusarium equiseti GLY27 for the first time, and the nucleotide sequence of the Velvet family gene A6653 is as shown in SEQ ID NO. 1. Furthermore, overexpression of the Velvaet family gene A6653 is realized by constructing a genetically engineered bacterium, so that the yield of the eosin is remarkably increased, the antibacterial effect of the eosin is enhanced, a lead compound is favorably provided for development of new drugs, and therefore, the gene engineering bacterium has a good practical application value.

Deep-ultraviolet scanning microscopy uses a first imaging apparatus arranged on a first side of a sample and a second imaging apparatus arranged on a second side of the sample. The first imaging apparatus includes a first ultraviolet light source to illuminate the first side of the sample and a first camera to receive light emitted from the first side of the sample. The second imaging apparatus includes a second ultraviolet light source to illuminate the second side of the sample and a second camera to receive light emitted from the second side of the sample. The first and second sides can be imaged in parallel, and can be sparsely sampled to increase imaging speed. A machine learning model can be used to generate images from the acquired signals. Signals can be detected from intrinsic sources (e.g., tryptophan) and extrinsic sources (e.g., propidium iodide and / or eosin Y) at the same time.

This invention discloses a method for detecting Ag. + The present invention describes a reagent for the detection of C-reactive protein (CRP) and its application therein, wherein the reagent comprises gold nanoparticles. The present invention uses changes in eosin fluorescence intensity as the detection signal and silver halide as the medium, significantly increasing the detection rate of the same concentration of Ag through the co-precipitation effect of AuNPs. + The amount of eosin induced to adsorb, resulting in Ag + The detection limit was increased by 955 times; eosin, AuNPs, silver halides and aptamers (containing Ag) were also improved. + Induced C-C mismatched base pairs can be used for C-reactive protein detection, and can be used to detect the full range of C-reactive protein levels in blood. It also has the potential to be further applied to the detection of other low-concentration disease biomarkers in blood.

The invention discloses a staining reagent for helicobacter pylori staining and a preparation method and a staining method thereof, and belongs to the technical field of biomedicine. The dyeing reagent for helicobacter pylori dyeing is characterized by comprising eosin, methylene blue, aniline blue and methanol, the mass ratio of the eosin to the methylene blue is (0.3-0.4): 1. In addition, the invention further provides a preparation method of the dyeing reagent for helicobacter pylori dyeing and a helicobacter pylori dyeing method. The staining reagent provided by the invention can be used for rapidly and specifically staining the helicobacter pylori.

The invention discloses a photocuring biological tissue adhesive as well as a preparation method and application thereof, and relates to the technical field of biomedical materials. The photocuring biological tissue adhesive comprises: (1) a photocuring cross-linked network forming unit, which comprises: (1) a methylacryloylated natural polymer with amino on the main chain; (2) F127DA; (2) a dynamic and stable chemical crosslinking unit comprising: (1) an oxidized polysaccharide comprising at least one of oxidized dextran, oxidized hyaluronic acid, and oxidized cellulose; (2) succinimide acrylate; (3) a photoinitiator comprising: a lithium phenyl (2, 4, 6-trimethylbenzoyl) phosphate salt or a photoinitiator composition, the photoinitiator composition comprising: eosin Y at a concentration of 0.05 to 0.25 mmol / L; triethanolamine, the mass volume ratio of which is 1.5% to 3%; and N-vinylcaprolactam in a mass volume ratio of 1% to 2%. According to the invention, the visual pathway is not obstructed while firm bonding is realized, and the application prospect of the high-precision advanced field is expanded.

The application discloses a vaginal micro-ecological detection staining method, mainly comprising the following steps: 1) taking female genital tract secretion and diluting the same by a diluent to form a suspension; 2) coating the suspension on a glass slide; 3) drying and fixing the suspension on the glass slide; 4) immersing the glass slide in a eosin dye solution for staining, and then taking out the glass slide and washing the same by flowing water; 5) immersing the glass slide in a methylene blue dye solution for staining, and then taking out the glass slide and washing the same by flowing water; 6) performing gram staining on the glass slide; and 7) observing by using a microscope. The staining method can not only clearly show the trophozoite shape and flagellum shape of Trichomonas vaginalis, but also accurately distinguish leukocytes and trichomonads, is favorable to improving the accuracy of trichomonas vaginalis detection, and is favorable to comprehensively and accurately detecting the vaginal micro-ecology.

The invention discloses application of cryptotanshinone in preparation of a medicine for treating vascular endothelial cell injury, and belongs to the technical field of medicines. The application of the cryptotanshinone in preparing the medicine for treating the vascular endothelial cell injury is provided for the first time, a new treatment scheme is provided for the vascular endothelial cell injury, and the pharmaceutical application of the cryptotanshinone is expanded. According to the application disclosed by the invention, by culturing human umbilical vein endothelial cells, the influence of the P. gingivalis-sourced lipopolysaccharide on an HUVEC transcriptome is evaluated; constructing an in-vivo lung injury rat model, and utilizing hematoxylin amp; the protection effect of cryptotanshinone on pulmonary edema and pathological injury of rats is evaluated through methods of porphyromonas gingivalis infection, eosin staining, blood gas analysis and the like, and an experimental basis is provided for vascular endothelial cell injury and dysfunction caused by porphyromonas gingivalis infection.

The application discloses a method for preparing a cell block by using mucin emulsifier and application thereof, and the preparation method comprises the following steps: centrifuging a non-gynecological sample to obtain a first separation liquid, adding the first separation liquid into a formaldehyde-alcohol solution to centrifuge to obtain a second separation liquid, and adding the second separation liquid into mucin emulsifier to centrifuge to obtain a cell block. The preparation method is simple, the manufacturing cost is low, the cell block has high enrichment efficiency, cell loss is small, and the mucin emulsifier does not affect cell activity. The cell block prepared by using the mucin emulsifier has the following advantages: the appearance of the section of the cell block is complete, the section has a regular circular structure, the porosity is moderate, and the thickness is uniform; the application effect of the section in two kinds of staining is good: the hematoxylin-eosin staining has a clear background and clear contrast, cells are uniformly distributed in a circular area, cell morphology presents a stereoscopic effect, and the excellent rate of the stained section is 98.94%; the immunohistochemical staining has a clean background, and structures and cells are specifically dyed, and the excellent rate of the stained section is 99.30%, so that the cell block has a wide application prospect.

EY (Eosin Y) is used as a stabilizer, and EY / Ag2S composite nanoparticles are synthesized through the strong combination effect of silver ions and sulfur ions. When the concentration of EY is 5.0 * 10 <-6 > M and the ratio of EY to Ag < + > to S < 2-> is 1: 20: 10, the synthesized EY / Ag2S composite nanoparticles have very weak fluorescence intensity at 547 nm under the excitation of 290 nm light. When glutathione (GSH) is added, the fluorescence intensity of an EY / Ag2S system at 547 nm can be enhanced, when the concentration is in a range of 0.1-2.0 [mu] M, a good linear relationship is formed between the increase value of the fluorescence of the system and the concentration of GSH, the correlation coefficient r is 0.9981, and the detection limit is 0.033 [mu] M. Therefore, a method for detecting GSH with high sensitivity is established.