535 results about "Intraperitoneal injection" patented technology

The invention discloses high levels of receptors for Clostridium perfringens enterotoxin (CPE) have been found in ovarian cancer and uterine cancer tissue samples. In addition, successful in vivo treatment of a mouse model of ovarian cancer with intraperitoneal injection of CPE is disclosed. High levels of Ep-CAM protein is also disclosed in ovarian cancer tissue samples. Thus, the invention provides a method of treating ovarian cancer and uterine cancer by administering CPE. The invention also provides a method of treating cancer in a mammal involving intraperitoneal administration of CPE, where at least some cancerous cells are located in or adjacent to the peritoneal cavity of the mammal. The invention also provides a method of treating ovarian cancer involving administering an anti-Ep-CAM antibody. The invention also provides a method of treating cancers expressing claudin-3 or claudin-4 by administering an antibody against claudin-3 and/or an antibody against claudin-4. The invention also provides a method of protecting a mammal from CPE toxicity involving administering a protective agent that binds to claudin-3 and/or claudin-4 and inhibits CPE binding to claudin-3 and/or claudin-4.

The invention relates to a preparation method of a 2-type diabetic nephropathy model. The method comprises the following steps of: selecting a male SHR (spontaneously hypertensive rat) rat with an age of 6 weeks, wherein the blood pressure of the male SHR rat at birth is normal, and at the time of 4 weeks, the blood pressure begins to rise; after adaptively feeding the SHR rat selected in the step (1) for one week, feeding a high sugar and high fat feed for 2 weeks; detecting the weight, the blood fat, the blood sugar and the insulin concentration and calculating an insulin resistance index evaluated by a steady-state model, wherein the insulin resistance index is not smaller than 3.8, and the high fat and high sugar feed comprises the following components in percentage by weight: 10.0 percent of lard, 20.0 percent of cane sugar, 2.5 percent of cholesterol, 2.0 percent of cholate and 66.5 percent of conventional feed; after fasting the insulin resistant SHR rat for 12 hours, carrying out a small-dose one-time STZ (streptozocin) (35mg/kg) intraperitoneal injection on the SHR rat, wherein the small dose is 35mg/kg; after 72 hours, measuring the random blood sugar; and judging the 2-type diabetic nephropathy model to be successfully prepared if the plasma glucose is not smaller than 16.7mmol/L.

Celiac Sprue and/or dermatitis herpetiformis arc treated by interfering with HLA binding of immunogenic gluten peptides. The antigenicity of gluten oligopeptides and the ill effects caused by an immune response thereto are decreased by administration of an HLA-binding peptide inhibitor. Such inhibitors are analogs of immunogenic gluten peptides and (i) retain the ability to bind tightly to HLA molecules; (ii) retain the protcolytic stability of these peptides; but (iii) are unable to activate disease-specific T cells.

Chemical compounds, being the alkyl sulfate of sulfated saccharides, particularly, dextrin, dextran, and cyclodextrin, and pharmaceutical compositions containing these compounds. The compounds of the invention provide antiviral activity, particularly in the treatment and prevention of sexually-transmitted diseases. Methods of treating viral infection and preventing viral transmission include administration include administration of the compounds of the invention orally, topically, subcutaneously, by muscular injection, by intraperitoneal injection and by intravenous injection.

The invention relates to a Bacillus velezensis, and a micro-ecological preparation and preparation method thereof. The Bacillus velezensis is preserved in China Center for Type Culture Collection, hasa strain preservation number of CCTCC NO: M 2019218, and is classified and named as Bacillus velezensis BvL03, and the Latin academic name is Bacillus velezensis BvL03. The micro-ecological preparation suitable for aquiculture prepared by the strain has broad-spectrum effect of inhibiting fish pathogenic bacteria through drug-delivery routes such as feed addition, water body sprinkling or intraperitoneal injection, and the protection rate reaches 85 percent. After acting on fish bodies, the preparation can effectively prevent fish pathogenic bacteria such as aeromonas hydrophila from infecting freshwater fishes such as grass carps and crucian carps, and particularly has the best protection effect on grass carps.

The invention discloses a modeling method of a non-alcoholic fatty liver mouse model, and the method is characterized by consisting of the following steps that (1) a healthy mouse is caught and first adaptively raised for 3 to 7 days in an animal house, a backing material and clean water in a mouse cage are changed every day, and basic fodder is fed during that period of time; (2) after adaptive raising, composite high-fat fodder is fed every day; (3) 5 percent CC14 liquid is injected into the abdominal cavity of the mouse two weeks later, the liquid carbon tetrachloride is diluted to 5 percent emulsion with deionized water, and the liquid which is injected into the abdominal cavity shall be newly prepared; the abdominal cavity injection state continues for the 28th day, and meanwhile the composite high-fat fodder is fed; and the model is obtained. The modeling method has the advantages of short time, high modeling success rate, extremely low mortality rate and low cost.

The invention discloses a method for inducing a rat liver cancer model by injecting diethyl nitrosamine DEN in coordination with microcystin MC-LR into a rat body through intraperitoneal injection. Indexes such as liver weight to body weight ratio, liver appearance, liver histopathological slicing and GST-Pi (Glutathione S-transferase) protein expression level clearly show liver cell injury phase, liver cell hyperplasia-hepatocirrhosis phase and liver cell carcinomatous change process in a rat liver cancer occurring process, and find that the liver cancer model induced by the DEN in coordination with the microcystin MC-LR has a more obvious effect at the same time than that induced by DEN independently; the tumor formation time is shorter; and the model is an ideal model for researching occurrence of the liver cancer of a human body. The model has the characteristic of clearly showing each stage for occurrence of the liver cancer and contributing to research of a liver cancer occurrence process mechanism, detection of precancerous lesion and development of treatment medicaments.

The invention relates to pelteobagrus fulvdraco sperm ultralow temperature freezing storage and recovery method. Parent pelteobagrus fulvdraco which is in good shape and good growth, has no disease and is sexually mature is selected, 30Mug/kg LHRH-A2 intraperitoneal injection is carried out to induce sperm increasing, after 36 hours, dissection is carried out to obtain spermary, and the spermary is cut into pieces in a clean mortar cooled in a refrigerator at 4 DEG C in advance, the pieces are diluted by Ringers solution in the proportion of 1:6, balancing is carried out for 30min at 4 DEG C, 10% methyl alcohol is added, and mixing to be uniform is carried out, packaging is carried out, balancing is carried out for 10min 6cm above liquid nitrogen surface, and balancing is carried out for 5min on the liquid nitrogen surface, and then the product is thrown into liquid nitrogen to be stored. Water bath ate 37 DEG C is carried out, activation solution SM is used for activation, pelteobagrus fulvdraco roe is extruded into a container, frozen sperm is added in drops in the sperm roe quantity ratio of 105:1, stirring to be uniform is carried out, then appropriate activation solution SM is added in drops, and stirring to be uniform is carried out, so that fertilization of roe is carried out. The sperm stored by the invention has high quality, has insemination capability and has important theoretical significance and application value on seed quality saving, inheritance breeding, sustainable culture and disease control of pelteobagrus fulvdraco.

The invention discloses a duplication method of rat acute or persistent hyperuricemia model which comprises, (1) selecting male, female healthy rats with the specie of SD and Wistar and 150-450g of body weight, simultaneously administering purines by 100-2000 mg/kg and uric acid depressant by 5-1000mg/kg through stomach filling, hypodermic injection or abdominal cavity injection, (2) after 5-24 hours, administering the rats by the same mode and medicament dose, (3) administering the rats daily continually according to the step (1) and (2), continuing administration for one to two weeks.

The invention discloses an imaging model in small animal living bodies with echinococcus granulosus and a construction method thereof. The construction method comprises the steps of: feeding CF-1 male mice; carrying out in vitro culture and drug treatment on protoscolex; carrying out in vitro fluorescence imaging and fluorescence gradient analysis; pretreating mice with depilatory paste for experimental animals, injecting the abdominal cavity of each mouse with chloral hydrate anesthetic, implanting three groups of stained scoleces under Glisson capsules by injection, dividing the mice into three groups according to different groups of injected protoscolex; in a control group, injecting the livers of mice with protoscolex on which drug treatment is not carried out, collecting images every 12 hours after injection, carrying out fluorescence intensity analysis on the ROIs region, putting into a polyethylene cage after imaging, and carrying out in vitro fluorescence gradient detection in the positive control group. The construction method constructs a mouse model with echinococcus granulosus which can express luciferase, provides a platform for drug sensitive tests in living bodies with echinococcosis, and can monitor the growth and transfer of hydatid in the living model dynamically in a long term.

Belonging to the field of biotechnologies, the invention discloses a preparation method of a diazepam monoclonal antibody, and especially discloses application of the diazepam monoclonal antibody in the rapid detection method of ELISA. The method includes: coupling carboxylation reformed diazepam with carrier protein by an EDC technique, immunizing 5-6-week-old Balb/c mice by intraperitoneal injection, taking spleen from the mouse with positive binding activity and competitive activity to conduct cell fusion and carrying out screening to prepare the monoclonal antibody, and optimizing reaction conditions, determining the concentration of optimal coating antigen DZP-OVA at 1.25 microgram/mL and the optimal antibody dilution factor at 1:16000, thus establishing the ELISA method for the rapid detection of diazepam. The lowest detection limit IC10 of the method is 0.0011 microgram/mL. The invention provides the basic reagent antibody for immunoassay of diazepam and the detection method.

The invention discloses a method for constructing a model of an animal with chronic cardiac failure heart qi deficiency and blood stasis edema. The method includes the following steps that a clean adult male SD rat is selected, the rat is placed in a cleansing cage, the temperature ranges from 19 DEG C to 23 DEG C, the relative humidity ranges from 40% to 50%, a natural lighting mode is adopted, and the rat is fed through the rat standard feeds and can drink water freely; after adaptive feeding is conducted for one week, lavage is conducted through adriamycin of 0.2 % of the fodder weight, and propylthiouracil injection is conducted on the abdominal cavity one time every week according to the proportion of 3.5 mg/kg and continues for six weeks. The method for constructing the model of the animal with the chronic cardiac failure heart qi deficiency and the blood stasis edema has the advantages that the model can better simulate the chronic cardiac failure heart qi deficiency and the blood stasis edema, meet the pathological characters, for example, LVEF and LVFS reduce remarkably, and BNP increases, of the chronic cardiac failure in western medicine, and show the chronic cardiac failure heart qi deficiency and the blood stasis edema in traditional Chinese medicine, and the copy method is good in stability and repeatability, simple and objective.

The invention relates to a tanshinone IIA phosphate phenolic ester derivative and a preparation process thereof. The derivative and the preparation process thereof have the advantages that firstly, the new derivative of tanshinone IIA is provided, and the new substance can serve as a drug for treating cerebrovascular diseases; secondly, the tanshinone IIA phosphate phenolic ester derivative is good in water solubility and can be produced into injections conveniently. Animal experiments indicate that the tanshinone IIA phosphate phenolic ester derivative has a good pesticide effect on mouse middle cerebral artery occlusion (MCAO) through intraperitoneal injection and can be developed into the new drug for treating the cerebrovascular diseases, particularly the injection-type drug for treating the cerebrovascular diseases. The derivative serves as an important prodrug and has the high application value clinically.

The invention relates to the field of molecular biology and immunology and particularly discloses an Edwardsiella tarda recombinant subunit vaccine as well as a preparation method and application thereof. The vaccine has a base sequence in a sequence table SEQ ID No.1. The preparation method of the Edwardsiella tarda recombinant subunit vaccine comprises the following steps of constructing a vaccine antigen expression plasmid pETXV21, converting the vaccine antigen expression plasmid pETXV21 into escherichia coli BL21 (DE3), recovering a recombinant protein after induced expression, mixing the recombinant protein with a strain B187, and dissolving the mixture in PBS (Phosphate Buffer Saline) to obtain a vaccine mixed liquor which has the function of immune protection to Edwardsiella tarda. The vaccine mixed liquor is intraperitoneally injected to fishes to achieve the purpose of immune protection.

The invention provides a method for establishment of a macaca mulatta liver fibrosis model by intraperitoneal injection. The method includes the steps of: selecting 5-9kg male macaca mulattas of 2-3 years old as the model animals, performing feeding with high-fat feed during modeling, supplying an alcohol water solution with a volume concentration of 9%-11% for drinking, and injecting CCl4 injection to each macaca mulatta during modeling twice a week by intraperitoneal injection continuously for 20-30 weeks, and controlling the injecting amount at 0.8-1.5mL/kg each time, thus achieving successful modeling. The animal model establishment method provided by the invention is simple, safe and reliable, has the characteristics of short modeling time, high success rate, good repeatability, goodanimal tolerance and low death rate, and can be used for studying the pathogenesis, pathogenic factors and treatment means of chronic liver diseases.

The invention relates to a method for establishing a damp-heat diarrhea animal model. The method includes the steps of putting a Wistar rat in a metabolism cage and letting the rat freely drink hydromel; alternatively carrying out fasting, sufficient forage feeding, and lard gavage every other day for 10 days; filling a proper amount of liquor on the 10-15th days, and placing the rat in high temperature and humidity environment for 5 days; and injecting Escherichia coli into the abdominal cavity on the 16th day, and injecting again in 24 hours. By observing the general condition of the rat and detecting the blood, blood viscosity, blood biochemistry and serum cytokines, it is shown that the damp-heat diarrhea animal model is established successfully by the method. The animal model constructed by the invention has good reproducibility and stability, and can withstand the test of drug test, so as to provide an ideal animal model for developing new therapeutic drugs.

The invention provides a B-group epidemic neisseria meningitidis recombinant protein vaccine and a preparing method thereof, and belongs to the field of biological products. The vaccine contains three mutant recombinant proteins of a human H factor binding protein. The invention further provides a preparing method of the B-group epidemic neisseria meningitidis recombinant protein vaccine. The method includes the steps of human H factor binding protein V1, V2 and V3 recombinant expression carrier construction, expression strain screening and identification, fermental cultivation, recombinant protein antigen inducible expression and recombinant protein antigen purification and protein detection; and according to the concentrations of the three antigen components, quantified mixing is carried out, and the B-group epidemic neisseria meningitidis recombinant protein vaccine is prepared in cooperation with an aluminum adjuvant. By means of the B-group epidemic neisseria meningitidis recombinant protein vaccine, intraperitoneal injection is carried out on an immune mice, the mice body can be stimulated to generate a B-group epidemic neisseria resisting peculiar antibody, and the alexin mediated serum sterilization antibody can rise by more than 8 times.

The invention relates to a chloramphenicol-resistant monoclonal antibody, which is mainly used for detecting chloramphenicol residue in livestock products and milk products. The chloramphenicol-resistant monoclonal antibody is secreted from a hybridoma cell line 7C10; and the preparation method comprises the following steps of: coupling EDC-activated chloramphenicol and carrier protein to obtain immunogen and coating antigen; performing intraperitoneal injection of mouse immunogen and enhancing the immunity; screening out a mouse who is subjected to immunity enhancement and has high serum titer; fusing spleen cells and SP2/0 myeloma cells; performing sub-clone to obtain the monoclonal antibody hybridoma cell line 7C10 capable of stably secreting the chloramphenicol; performing intraperitoneal injection on the mouse with the hybridoma cell line 7C10; collecting ascitic fluid; and performing liquid-phase chromatographic purification to obtain the chloramphenicol-resistant monoclonal antibody 7C10'. The chloramphenicol-resistant monoclonal antibody has the advantages of high specificity, high flexibility and affinity, large-scale production and effect of quickly and sensitively detecting the chloramphenicol residue in foods such as milk, meats, aquatic products and the like.

The invention relates to the technical field of establishment of animal experiment models and in particular relates to a method for establishing a fish inflammatory bowel disease model and the established model thereof. The method comprises the following steps: injecting aeromonas hydrophila with the collection number of CCTCC NO.M2013089 into a soaked anaesthetic healthy fish through anus perfusion, breeding and selecting fish with the symptom of the inflammatory bowel disease as the fish inflammatory bowel disease model. According to the method, the aeromonas hydrophila is directly filled in the intestinal tract of the fish, and the process that the pathogenic bacteria enter blood through intramuscular injection or intraperitoneal injection and act on the intestinal tract through blood circulation is avoided, so that the pathogenic bacteria directly act on the intestinal tract, and the pertinence is improved; furthermore, the established model has high stability and repeatability, and because the aeromonas hydrophila is wide in infection spectrum, the established method can be widely applied to multiple fishes.

The invention relates to novel use of methylene blue (MB) in prevention of acute cerebral ischemia. MB can remarkably reduce cerebral ischemia infarction caused by permanent middle cerebral artery occlusion (middle cerebral artery occlusion MCAO) and alleviate damage of neurological function. The inventors of the invention permanently occlude middle cerebral artery of a mouse by adopting a suture method and after intraperitoneal injection of MB at the moment and at different time points after cerebral ischemia, changes on degree and ethology of permanent cerebral ischemia infarction of the mouse are observed. Researches discover that MB can remarkably reduce infarct volume caused by cerebral ischemia and improve the active ability of the mouse after cerebral ischemia. Through the method provided by the invention, moderate doses of MB are delivered for many times after cerebral ischemia can remarkably alleviate damage degree after permanent cerebral ischemia of the mouse so as to improve the active ability of the mouse after cerebral ischemia. The use of MB is expected to provide a rescue therapeutic measure to cerebral apoplexy and alleviate permanent neurological function deficit after golden treatment period.

The invention discloses a building method of an ulcerative colitis transformation animal model. By using the method, an inflammatory transformation model combining with clostridium difficile in a DSSacute colitis model is built; and different bacterium feeding modes, including three measures of intraperitoneal injection, gastric perfusion and enema are used. The model has the advantages that theproportion of mouse mesenteric lymphocytes Th17 can be obviously increased by the model; the secretion of IL-17 is increased; the result is more similar to the pathological features of clinic patientswith ulcerative colitis; and the clostridium difficile feeding effect on the mice through gastric perfusion is best.

The invention discloses an application of an antibacterial peptide C-BF in preparation of medicines for preventing and treating weanling stress of piglets. The intestinal morphology can be improved by the antibacterial peptide C-BF; the villus height can be increased; the intestinal inflammation is relieved; the growth performance of weaned pigs is improved; the diarrhea rate is lowered; and the antibacterial peptide C-BF is dosed through intraperitoneal injection.