25 results about "Animal virus" patented technology

The application discloses a kit for detecting equine infectious anemia virus antibody and belongs to the field of animal virus antibody detection. The kit comprises equine infectious anemia virus p26-gp90 recombinant protein, mouse IgG and goat anti-mouse IgG, and the equine infectious anemia virus p26-gp90 recombinant protein is composed of an amino acid sequence shown in SEQ ID NO. 1. The kit is used for detecting equine infectious anemia virus antibody, is convenient and fast, has high sensitivity, has no cross reaction with other pathogens, has high specificity, has great clinical significance and wide application prospect.

The application discloses a primer probe set for simultaneously detecting multiple frog viruses, a kit and application thereof, and belongs to the technical field of animal virus detection.The primer probe set for detecting frog viruses comprises a primer group with the sequence shown in SEQ ID NO.1-2 and a probe with the sequence shown in SEQ ID NO.3.According to the D5family NTPase gene sequence of the Ranavirus member, the primer and the probe are designed, and through optimization of reaction conditions, a method for detecting frog viruses based on qPCR is finally established.The method has the characteristics of high specificity, good repeatability, high sensitivity, simple operation and reliability, and has good market application prospect and popularization and application value.

This invention discloses a sample collection device for animal virus detection, relating to the field of virus collection technology. It includes a device housing with a rotating structure inside. The rotating structure includes a main shaft rotatably mounted inside the housing, a winding shaft fixedly connected to the upper end of the main shaft, and a sterilization structure on the outer surface of the winding shaft. The sterilization structure includes an adjusting rope wound around the outer surface of the winding shaft at one end, a connecting bracket fixedly connected to the other end of the adjusting rope, a sterilizing lamp on the outer surface of the connecting bracket, a guide wheel movably mounted on the outer surface of the adjusting rope, a fixed bracket between the guide wheel and the inner wall of the device housing, and a slide rail fixedly connected to the outer surface of the inner wall of the device housing. This structure solves the problems of existing animal virus detection sample collection devices where the support plate holding the collection bottle is fixed and cannot rotate, making it inconvenient to remove the collection bottle, and the sterilization lamp used for sterilization has a fixed position and poor sterilization effect.

The application relates to the technical field of animal virus molecular detection, and particularly discloses a multiple detection method for ASFV, PCV2 and PCV3 suitable for rapid real-time fluorescent PCR. Specific primers and TaqMan probes are designed according to the B646L gene of ASFV and the ORF1 gene conservative regions of PCV2 and PCV3, and the sequences are shown as SEQ ID NO:1-9. The primers and probes are optimized: avoiding strong GC anchoring at the 3' end of the primers, continuous AT series and G base at the 3' end of the probes, and shortening the length of the probes to adapt to rapid real-time fluorescent PCR. The minimum detection limit of the three viruses is not higher than 5 copies per muL, the detection is completed within 30 minutes, there is no cross reaction with 11 common pig pathogenic agents, the coefficient of variation is less than 2%, the sensitivity is high, the specificity is strong, the method is rapid and convenient, and is suitable for rapid diagnosis of mixed infection of ASFV, PCV2 and PCV3.

The application relates to the technical field of animal virology, and particularly discloses a GIIa type porcine epidemic diarrhea virus (PEDV) strain and application. The PEDV strain is named as LZ202401, and was preserved in the China Center for Type Culture Collection on October 15, 2024, with a preservation number of CCTCC NO:V202488. The strain provided by the application is a strong pathogenic PEDV strain, and after infecting piglets, the piglets appear vomiting and diarrhea conditions, so that the piglets are relatively slow in development, rough in hair, seriously dehydrated, depressed in spirit and constantly tremble. The inactivated vaccine prepared by using the strain has good immunogenicity and can be used for preventing porcine epidemic diarrhea caused by PEDV.

The application discloses a kind of based on water body virus load and fish body tissue virus load correlation grouper nervous necrosis virus nondestructive testing method.The method is through optimizing the concentration condition of virus in aquaculture water, realize the efficient concentration and quantification of water body virus load, then combine water-water aquaculture animal virus load correlation model, indirectly and nondestructively assess the virus infection state of aquaculture animal.The application detects water environment instead of detecting animals itself, realizes nondestructive, dynamic, early warning monitoring of the health status of aquaculture animal population, with the advantages of low cost, simple operation, frequent implementation, etc., and has important application value in aquatic disease prevention and control, good seed selection and biological safety management.

The application provides an avian PCV3 gene and application thereof, and belongs to the technical field of animal virology and immunology. The application provides an avian PCV3 gene for the first time, which is named aPCV3, and the nucleotide sequence of the aPCV3 gene comprises any one of SEQ ID NO. 1-2 or a sequence with a homology of more than 90% with SEQ ID NO. 1 and 2. The virus strain containing the aPCV3 gene has a high virus titer and can be stably passaged for multiple times. The inactivated vaccine prepared from the virus strain containing the aPCV3 gene and the subunit vaccine prepared from the Cap gene or the Rep gene in the aPCV3 gene have a significant protective effect on poultry such as chickens, ducks and geese. The ELISA detection plate prepared from the Cap gene or the Rep gene in the aPCV3 gene can accurately detect PCV3 and has high specificity and repeatability.

The invention discloses a dual real-time fluorescent quantitative PCR (polymerase chain reaction) detection method for simultaneously detecting porcine hemagglutinated encephalomyelitis virus (PHEV) and porcine teschovirus (PTV), and belongs to the technical field of animal virus molecular biological detection. Aiming at the problems of similar clinical symptoms, high fatality rate and lack of synchronous detection and identification means after the suckling piglets are infected by PHEV and PTV, a specific primer pair and a probe are designed and screened through sequence comparison based on conserved regions of genomes of the two viruses. The detection method provided by the invention can realize qualitative and quantitative analysis of the two viruses, has the advantages of high sensitivity, high specificity and simplicity and convenience in operation, can quickly identify single infection or mixed infection of the two viruses, and provides an effective technical means for accurate detection in laboratories and epidemiological investigation.

The application discloses primers and a probe for real-time fluorescent quantitative PCR detection of a porcine epidemic diarrhea virus G2c subtype and application thereof and belongs to the field of animal virus molecular biology testing methods. The application compares S genes of different gene subtype strains of the porcine epidemic diarrhea virus, designs a pair of primers and a Taqman-MGB probe on the basis of a mutation site specific to the G2c subtype strain, and proves that the primers and the probe can effectively distinguish the G2c and other PEDV gene subtype strains through virus liquids and clinical samples of different gene subtype strains of the PEDV, meanwhile, the primers and the probe have no cross reaction to other viruses of the porcine enteric diarrhea syndrome, and the detection sensitivity of the kit can reach 5 copies / muL. The application can realize specific and sensitive detection of the G2c subtype, and has a positive significance for diagnosis and epidemiological investigation of the porcine epidemic diarrhea virus.

The invention provides an EIDD-1931 sustained-release preparation and a preparation method thereof, and belongs to the technical field of medical preparations, and the EIDD-1931 sustained-release preparation is prepared by uniformly mixing EIDD-1931, hydroxypropyl methyl cellulose K15M, polyvinylpyrrolidone K23-27, carbomer, sodium bicarbonate, a flow aid and a filler and tabletting. By preparing the antiviral drug sustained-release agent for cats, the half-life period of EIDD-1931 in plasma of cats is prolonged, the EIDD-1931 only needs to be administered once in one day, the drug feeding difficulty of pet owners is reduced, and the compliance of the pet owners is improved, so that the treatment effect after animal virus infection is improved, the recurrence rate is reduced, and the animal survival treatment and animal welfare are improved.

The invention provides a porcine circovirus type 5 Cap protein, a virus-like particle, an elisa plate, an ELISA kit and application thereof, and belongs to the technical field of animal viruses. The invention provides a porcine circovirus type 5 Cap protein with an amino acid sequence as shown in SEQ ID NO. 1. The porcine circovirus type 5 Cap protein provided by the invention has the advantages of stable structure and good antigenicity, can be specifically combined with a circovirus type 5 antibody in a serum sample, and can be self-assembled into 60 virus-like particles. The ELISA plate and the ELISA kit for detecting the porcine circovirus type 5, provided by the invention, have the advantages of strong specificity and high sensitivity, and can accurately detect whether a blood sample contains the porcine circovirus type 5 or not. The porcine circovirus type 5 virus-like particle provided by the invention has the advantages of high yield, good uniformity and strong stability, and can be subsequently prepared into a porcine circovirus type 5 subunit vaccine.

The invention belongs to the field of animal virus nucleic acid in-vitro detection, and discloses a kit and a method for detecting a Batai virus based on RPA-CRISPR / Cas12a. Specific RPA primers (SEQ ID NO.1-2) and gRNA-3 (SEQ ID NO.5) are designed, Cas12a trans-cleavage is completed within 15 min at 37 DEG C after isothermal amplification is performed for 30 min at 39 DEG C, and a result is read through a fluorescence or immunochromatography test strip. The sensitivity is 18.9 copy / mu L, compared with traditional qPCR, the time is shortened, and cross reaction with congeneric viruses is avoided. The method is suitable for non-diagnostic purpose epidemiological monitoring and animal quarantine screening.

The invention relates to animal virology and genetic engineering technologies, and aims to provide a recombinant porcine epidemic diarrhea virus with enhanced replication capability. The virus is obtained by modifying a porcine epidemic diarrhea virus PEDV, and the amino acid sequence of nucleocapsid protein (N protein) of the virus is shown as SEQ ID NO: 2. The strain of the virus is preserved in the China Center for Type Culture Collection, the preservation name is rcPEDV P120-NT139A, and the preservation number is CCTCC NO: V202562. According to the invention, threonine at the 139th site of nucleocapsid protein of PEDV is a key modification site influencing PEDV infection, and the new strain can be successfully infected in PEDV infection model verification experiments of IPEC-J2 and Vero cells; the strain shows stronger replication ability in a PEDV infection model verification experiment of IPEC-J2 cells, the production difficulty is reduced, and the strain can be further used for preparing a porcine epidemic diarrhea virus inactivated vaccine.

The application discloses a detection kit capable of distinguishing porcine Senecavirus infection or vaccine immunization, and belongs to the technical field of animal virus antibody detection. VP2-VP3-VP1 and 3AB-3C recombinant proteins used in the application have stronger antigenicity and diagnostic sensitivity when used for detecting porcine Senecavirus, can effectively distinguish natural infection from vaccine immunization, and thus realize accurate detection. In addition, the detection method also has good specificity, analysis sensitivity, repeatability and reproducibility, has a wider application range, and has important application value.

The invention relates to the technical field of traditional Chinese medicine preparations, and discloses a traditional Chinese medicine composition for reducing the incidence rate of viral diseases of animals and a preparation process of the traditional Chinese medicine composition. 780 to 820 parts of illicium verum; 850 to 900 parts of radix astragali seu hedysari; and 820-860 parts of madder. The preparation process comprises the following steps: (a) extracting honeysuckle with water; (b) carrying out reduced pressure distillation on illicium verum to extract volatile oil, and carrying out inclusion with hydroxypropyl-beta-cyclodextrin; (c) carrying out alcohol extraction on the astragalus membranaceus and the madder, and recovering ethanol; (d) combining the liquid medicine in the step (b) and the filter residues in the step (c), and decocting with water; and (e) mixing the extracting solution in the step (a), the clathrate compound in the step (b), the ethanol concentrate in the step (c) and the decoction in the step (d), adding auxiliary materials, filtering and sterilizing. The formula is synergistic; the process adopts shunt extraction, reduced pressure distillation and clathration, so that thermosensitive and volatile components are retained, extraction is complete, and the effect of reducing the incidence rate of viral diseases of animals by the composition is ensured.

The invention relates to an ERA-Cas12a primer, a probe, crRNA and a kit for detecting insertion of a PLCP gene into EV-G, and belongs to the technical field of animal virus molecular biology detection. The kit comprises an ERA-Cas12a primer for detecting insertion of the PLCP gene into EV-G, a probe and crRNA, and further comprises a negative control template, a positive control template, a reverse transcription and ERA amplification reagent, a double-index nucleic acid detection test strip, Cas12a protein, an FAM / Biotin reporter and a lateral flow detection test strip. The kit provided by the invention has the advantages of specificity, sensitivity, rapidness, high efficiency, isothermal amplification, on-site rapid diagnosis and the like, and is easy to popularize and apply.

The application provides a pig getah virus positive serum and a preparation method and application, and belongs to the technical field of animal virology. The application provides a preparation method of a pig getah virus positive serum, wherein a CDCD pig is used as a host, neutralizing antibody titer obtained through multiple immunization of high-concentration antigen is greater than or equal to 1:512; the serum does not have cytotoxicity affecting cell culture; the CDCD pig is a pig free from maternal antibody interference, which is obtained through caesarean section, isolated feeding and artificial feeding; the positive serum does not detect pig pseudorabies virus, swine fever virus, porcine circovirus type 2, pig foot-and-mouth disease virus, bovine viral diarrhea virus, porcine infectious gastroenteritis virus, porcine epidemic diarrhea virus, porcine rotavirus, porcine parvovirus, porcine Japanese encephalitis virus antibody, and has the characteristics of high titer and no cytotoxicity.

The application discloses a duck hepatitis virus 1 type DHAV-1 / HNSQ and application thereof, and belongs to the field of animal virology and genetic engineering. The duck hepatitis virus 1 type DHAV-1 / HNSQ has been preserved in the China Center for Type Culture Collection on March 5, 2026, and the preservation number is CCTCC NO:V202622. The VP1 gene of the variant strain has a deletion of three consecutive nucleotides. Animal experiments show that, after the variant strain infects ducklings, in addition to causing typical duck viral hepatitis lesions, the variant strain can also stably cause a new phenotype, such as thinning of the heart wall, reduction of myocardial toughness and liquefaction necrosis of pancreatic tissue, which has never been reported in the prior art, thereby providing important biological materials for effective prevention and control of duck hepatitis and pathogenic mechanism research.

The application provides a kind of recombinant humanized type VII collagen and its preparation method, specifically, the application uses genetic engineering technology to express and purify recombinant humanized type VII collagen (G0818) by combining biological fermentation method, the method is screened a lot, select the amino acid sequence of human type VII collagen in 1857-1930 segment, and high expression G0818 in the modified yeast system, with single end product composition, less impurities, no animal virus, no immune risk and the advantages of convenient industrialization, in addition, the G0818 also shows excellent efficacy in inhibiting active oxygen, moisturizing repair and firming anti-wrinkle.

This invention discloses a primer combination and its application for isothermal amplification-LFD rapid detection of porcine epidemic diarrhea virus (PEDV) G2 gene subtype, belonging to the field of animal viral molecular biology testing methods. This invention designs a primer combination targeting the S gene of PEDV. By setting a mismatched base at the 3' end characteristic base site of the upstream primer in this primer combination, the amplification specificity of the PEDV G2c gene subtype target sequence is significantly improved. Based on this primer combination, a rapid detection kit for isothermal amplification-LFD of PEDV G2c gene subtype was designed. This kit enables rapid identification and detection of PEDV G2c gene subtype strains, as well as specific and sensitive detection of the PEDV G2c gene subtype, which is of great significance for the diagnosis and epidemiological investigation of PEDV.

The invention provides competitive particles, such as virus-like particles, RNAs and DNAs for the treatment or prevention of viral infections and methods of using such particles for treating or preventing or reducing the risk of viral infections (or symptoms thereof) in a subject, such as a human or animal subject. For example, the method herein is a method of reducing or reducing the establishment of a zoonotic population of a virus in an animal, such as a livestock or wild animal (eg, a bat, camelid or a Pholidota (eg, a pangolin)).

The invention discloses a porcine delta coronavirus isolate, a polyclonal antibody and application of the porcine delta coronavirus isolate, and belongs to the technical field of animal virology and biology. The porcine delta coronavirus isolate is a porcine Delta coronavirus JS strain, the preservation number is CCTCC (China Center for Type Culture Collection) NO: V202157, the preservation date is August 10, 2021, and the preservation unit is China Center for Type Culture Collection. The PDCoV JS isolate provided by the invention can be stably proliferated on LLC-PK1 cells to generate typical cytopathy, has high virus titer and excellent immunogenicity, can generate a high-titer polyclonal antibody after immunizing a mouse, can induce the mouse to generate a high-level neutralizing antibody, can be used for preventing and treating porcine delta coronavirus infection, and can be used for preventing and treating porcine delta coronavirus infection. The method has good application value, and provides an important biological material for effective prevention and control of the porcine delta coronavirus disease.

This invention discloses an animal virus detection sample collection device, characterized by comprising a handle, a collection tube, a connecting frame, an expansion support, a lifting mechanism, and a sampling hoof knife. The tail end of the collection tube is vertically mounted on the top front end of the handle. The sampling hoof knife is fitted inside the collection tube, with its driving end extending out of the collection tube. The driving end drives the sampling hoof knife to extend along the inner wall of the collection tube, cutting and collecting hoof samples. The connecting frame is located below the collection tube and connected to it. The expansion support includes a U-shaped outer shell, a power rod, and a side support. This invention features a unique structure and ingenious design, ensuring high-quality sample acquisition, simplifying the operation process, and improving detection accuracy through the expansion support and the ring-shaped blade hoof knife.

The subject invention pertains to compositions and methods for preparing and using recombinant proteins based on the fungal Coprinus comatus Y3 protein to control plant and animal viruses and microbes, and diagnose, prevent and treat cancers. Methods are disclosed using compositions comprising recombinant Y3 proteins to diagnose, prevent and / or treat cancer diseases based on recombinant Y3 protein interaction with glycans expressed on cancer cells.

The invention discloses primers and a probe for real-time fluorescent quantitative PCR (polymerase chain reaction) detection of porcine epidemic diarrhea virus G2c subtype and application of the primers and the probe, and belongs to the field of animal virus molecular biology detection methods. By comparing S genes of different gene subtype strains of the porcine epidemic diarrhea virus, a pair of primers and a Taqman-MGB probe are designed on the basis of specific mutation sites of the G2c subtype strain, through virus solutions and clinical samples of the different gene subtype strains of the PEDV, it is proved that the primers can effectively distinguish G2c from other PEDV gene subtype strains, and the G2c and other PEDV gene subtype strains can be effectively distinguished. Meanwhile, no cross reaction exists on other viruses of the porcine intestinal diarrhea syndrome, and the detection sensitivity of the kit can reach 5 copies / microliter. According to the invention, the specific and sensitive detection of the G2c subtype can be realized, and the kit has positive significance on the diagnosis and epidemiological investigation of the porcine epidemic diarrhea virus.