46 results about "GC globulin" patented technology

The present invention relates to a method of measuring a vitamin D metabolite in a sample, the method comprising the steps of (a) treating said sample with a vitamin D metabolite releasing reagent under conditions appropriate to release a vitamin D metabolite from vitamin D-binding protein and not to cause protein precipitation, (b) subjecting the treated sample obtained in step (a) to a chromatographic separation, and (c) measuring a vitamin D metabolite during or after said chromatographic separation. The present invention also relates to methods for determining the vitamin D status of a subject, for use in the diagnosis of disease, and to agents and kits for use in performing the methods of the invention.

The invention relates to a 25 hydroxyl vitamin D detection kit and a preparation method thereof. A reagent comprises a first reagent and a second reagent and selectively further comprises a correction product. The first reagent comprises a 25 hydroxyl vitamin D antibody, a vitamin D binding protein antibody and buffer liquid. The second reagent comprises a micro-balloon combined with a 25 hydroxyl vitamin D antigen and the buffer liquid. The 25 hydroxyl vitamin D and the antigen on a surface of the micro-balloon are combined with the 25 hydroxyl vitamin D antibody in a competing mode so that turbidity generated by reaction of the micro-balloon combined with the 25 hydroxyl vitamin D and the 25 hydroxyl vitamin D antibody is reduced. Content of the 25 hydroxyl vitamin D in a sample can be calculated according to reducing degree of the turbidity.

The present invention provides methods for assaying a vitamin D moiety in a sample, using a water miscible organic solvent, a specific binding partner that specifically binds to said vitamin D moiety, the binding partner being different from a natural vitamin D binding protein for the vitamin D moiety, and a water soluble polymer that facilitates binding between the specific binding partner and the vitamin D moiety. Kits and reaction mixtures for assaying a vitamin D moiety in a sample are also provided.

The present invention relates to a method for diagnosing a subject's Alzheimer's disease state. The method involves providing a database containing information relating to protein expression levels associated and not associated with Alzheimer's disease. The database includes information relating to at least a majority of the following proteins: albumin, alpha-1-antitrypsin, apolipoprotin E, apolipoprotein J, complement component 3, contactin, fibrin beta, Ig heavy chain, Ig light chain, neuronal pentraxin receptor, plasminogen, proSAAS, retinol-binding protein, transthyretin, and vitamin D binding protein. Information relating to proteins found in one or more cerebrospinal fluid samples from a subject is also provided and a database is used to analyze the information from the subject to diagnose the subject's Alzheimer's disease state. Also disclosed is a computer readable medium and a system, both useful in carrying out the present invention.

The present invention concerns a reagent composition for releasing vitamin D compounds bound to vitamin D-binding protein, a method for the detection of a 25-hydroxyvitamin D compound in which the 25-hydroxyvitamin D compound is released from vitamin D-binding protein using this reagent and the mixture obtained in this manner is analyzed, the use of the reagent to release vitamin D compounds as well as a kit for detecting 25-hydroxyvitamin D which contains the reagent for releasing vitamin D compounds in addition to the usual immunological reagents.

The present invention relates to methods for diagnosing multiple sclerosis in a subject, the method, comprising determining the level of phosphorylation of a marker in a biological sample from the subject, wherein the marker is selected from α1-antitrypsin (a1AT) and vitamin D binding protein (VDBP); and comparing the level of phosphorylation of the marker in the sample to a reference value.

The present invention relates to a method of measuring a vitamin D metabolite in a sample, the method comprising the steps of (a) treating said sample with a vitamin D metabolite releasing reagent under conditions appropriate to release a vitamin D metabolite from vitamin D-binding protein and not to cause protein precipitation, (b) subjecting the treated sample obtained in step (a) to a chromatographic separation, and (c) measuring a vitamin D metabolite during or after said chromatographic separation. The present invention also relates to methods for determining the vitamin D status of a subject, for use in the diagnosis of disease, and to agents and kits for use in performing the methods of the invention.

A purification process for large-scale production of Gc-globulin is described. The source of Gc-globulin is preferably a crude plasma fraction but can be any solution, suspension or supernatant containing Gc-globulin, e.g., a milk product, colostrum or a fermentation broth. The Gc-globulin can be plasma-derived or produced by a genetic modified organism. The process includes two key elements: purification by series of ion exchange chromatography steps, and performing at least two virus-reduction steps. A diagnostic method to measure the free Gc-globulin in a patient blood sample, a use of Gc-globulin in medicine and the preparation of a Gc-globulin medicinal product is also provided. The product can be used in therapy for patients with circulatory disorders and complications, i.e., where it is contemplated that patients would benefit from the administration of Gc-globulin.

Agents for promoting bone deposition and growth in a mammalian subject. The agents are O-glycosylated and non-glycosylated peptides that are derived from vitamin D binding protein, collectively referred to hereinafter as “DBP” peptides. The DBP peptides are from 3 to 18, preferably from 4 to 14 amino acids in length and comprise a sequence which is at least 80% identical, preferably at least 90% identical to the amino acid sequence of a fragment contained within domain III of DBP. Methods for promoting bone deposition in a subject in need of the same are also provided. The methods comprise administering to the subject a therapeutically effective quantity of an agent selected from the group consisting of an activated form of vitamin D binding protein referred to hereinafter as “ADBP”, one or more DBP peptides, and combinations thereof. The agents may be administered locally or systemically.

The invention discloses application of vitamin D binding protein as a marker in diagnosis of mental disease depression, and particularly relates to application of a reagent for detecting the content of the vitamin D binding protein in preparation of a reagent for diagnosing the mental disease depression. Differential expression of the vitamin D binding protein in plasma of schizophrenia, bipolar mania, depression and non-mental disease control persons is indicated, and the specificity of the vitamin D binding protein in plasma of depression patients is only improved; the protein is singly usedas a peripheral blood biomarker to detect the content of the protein and is used for diagnosing depression, so that the differential diagnosis accuracy of depression and healthy people or schizophrenia and bipolar mania of other mental diseases can be remarkably improved. Therefore, vitamin D binding protein content detection has high clinical application value in depression diagnosis, and a brand-new way is provided for rapid and effective diagnosis of mental disease depression.

Disclosed is an invention in the field of conducting an immunoassay of 25(OH) vitamin D in blood or blood components, notably serum or plasma. The invention employs a perfluoro alkyl acid, or a salt thereof, to release 25(OH) vitamin D from vitamin D binding protein. Thereafter the binding protein comprising the 25-OH vitamin D is subjected to a competitive binding assay with a labeled vitamin D compound.

The invention provides carriers that enhance the absorption, half-life or bioavailability of therapeutic compounds. The carriers comprise targeting groups that bind the Vitamin D Binding protein (DBP), conjugation groups for coupling the targeting groups to the therapeutic compounds, and optionally scaffolding moieties.

It has been demonstrated that one of Vitamin D Binding Protein (DBP) biological functions is to enhance the chemotactic activity of C5a and C5a des Arg. The present invention has found that peptides having sequences that substantially correspond to a specific region in the N-terminal domain I of DBP can block the DBP enhancement of C5a or C5a des Arg chemotactic activity. Based in this discovery the present invention provides DBP antagonist peptides and the use thereof for the treatment C5a or C5a des Arg-mediated disorders.

The invention relates to a urine protein marker of breast cancer and applications thereof in diagnosis and prognosis. Specifically, the invention relates to applications of the urine protein marker of breast cancer in early diagnosis and disease monitoring of human breast cancer. The urine protein marker comprises beta-2 microglobulin, alpha-1-acid glycoprotein 1, programmed cell death 6 interacting protein, haptoglobin related protein, addiment C4-A, apolipoprotein A-IV, calcium binding protein, HLA-I histocompatibility antigen, A-3 alpha chain, pancreatic stone protein 1 alpha, blood coagulation factor XII, collectin 12, galectin-3 binding protein, vitamin D binding protein, and the like.

Disclosed are serum biomarkers for diagnosing liver fibrosis and methods for measuring the same. The serum biomarkers obtained from human serum include alpha2-macroglobulin (“A2M”), vitamin D binding protein (“VDBP”), apolipoprotein AI (“ApoAI”). The methods involve with immunoassay using specific antibodies to detect the biomarkers, including enzyme-linked immunosorbent assay (“ELISA”), radio immune assay (“RIA”) and flexible multi-analyte profiling (“xMAP”). ELISA, RIA or xMAP is used to measure changes of protein concentration for the specific protein biomarkers in serum for diagnosing liver fibrosis with suffering hepatitis B or C or other liver diseases. The measurement is safe and accurate. The method can be used before and after treatment of liver fibrosis. Thus, it is possible to achieve early diagnosis and treatment advocated in the preventive medicine.

The invention provides carriers that enhance the absorption, half-life or bioavailability of Ghrelin peptides. The carriers comprise targeting groups that bind the Vitamin D Binding protein (DBP), conjugation groups for coupling the targeting groups to the therapeutic compounds, and optionally scaffolding moieties.

The present invention relates to methods and compositions for monitoring, diagnosis, prognosis, and determination of treatment regimens in subjects suffering from or suspected of having a renal injury. In particular, the invention relates to using assays that detect one or more biomarkers selected from the group consisting of Beta-nerve growth factor, Interleukin-17A, Follitropin subunit beta, Collagenase 3, Follistatin, Vitamin D Binding Protein, Islet amyloid polypeptide, Insulin C-peptide, Complement Factor H, Gastric inhibitory polypeptide, Glucagon-like peptide 1, Glucagon, Involucrin, Type II cytoskeletal Keratin-1 / Keratin-10, Type II cytoskeletal Keratin-6A / 6B / 6C, Osteocalcin, Lipopolysaccharide, Pancreatic prohormone, Peptide YY, Agouti-related protein, Ciliary neurotrophic factor, Appetite-regulating hormone, Transthyretin, Insulin receptor substrate 1, and NF-kappa-B inhibitor alpha as diagnostic and prognostic biomarker assays in renal injuries.

A purification process for large-scale production of Gc-globulin is described. The source of Gc-globulin is preferably a crude plasma fraction but can be any solution, suspension or supernatant containing Gc-globulin, e.g., a milk product, colostrum or a fermentation broth. The Gc-globulin can be plasma-derived or produced by a genetic modified organism. The process includes two key elements: purification by series of ion exchange chromatography steps, and performing at least two virus-reduction steps. A diagnostic method to measure the free Gc-globulin in a patient blood sample, a use of Gc-globulin in medicine and the preparation of a Gc-globulin medicinal product is also provided. The product can be used in therapy for patients with circulatory disorders and complications, i.e., where it is contemplated that patients would benefit from the administration of Gc-globulin.

A reagent composition for releasing vitamin D compounds bound to vitamin D-binding protein and an in vitro method for the detection of a vitamin D compound in which the vitamin D compound is released from vitamin D-binding protein by the use of this reagent composition as well as the reagent mixture obtained in this manner. Also disclosed is the use of the reagent compositions to release vitamin D compounds as well as a kit for detecting a vitamin D compound.

The invention discloses a vitamin D binding peptide and application thereof. Sequence motif of the vitamin D binding peptide is LFLLLF. The vitamin D binding peptide and the application have the advantages that the vitamin D binding peptide can be used as an antigen for effectively inducing antibodies for vitamin D binding proteins, accordingly, the vitamin D binding proteins can be accurately quantified, and the in-vivo vitamin D contents can be quantitatively detected.

The present invention relates to methods for diagnosing multiple sclerosis in a subject, the method, comprising determining the level of phosphorylation of a marker in a biological sample from the subject, wherein the marker is selected from a1-antitrypsin (a1AT) and vitamin D binding protein (VDBP); and comparing the level of phosphorylation of the marker in the sample to a reference value.

The vitamin D binding protein (Gc protein) and its small region (approximately 1 / 5 of the Gc peptide, known as region III) were cloned with the aid of baculovirus vectors. The cloned Gc protein and cloned domain (Cd) peptide were treated with immobilized β-galactosidase and sialidase to produce macrophage activating factors GcMAFc and CdMAF, respectively. These cloned macrophage activating factors and GcMAFs can be used to treat cancer, HIV infection, and osteoporosis, as well as as adjuvants for immunization and vaccination. Methods and antibody-sandwich ELISA kits for detecting serum or plasma α-N-acetylgalactosaminidase activity in patients with cancer and HIV infection were developed.

The present invention provides biological markers associated with gastric cancer. In particular, the present invention provides a method of diagnosing gastric cancer (GC) in a subject, the method including: measuring an expression level of one or more proteins in the subject, wherein the one or more proteins are selected from the group consisting of vitamin D binding protein (VDBP), clusterin, insulin like growth factor binding protein complex acid labile subunit (IGFALS), and afamin; comparing the expression level of the or each protein in the subject to a reference expression level for the or each protein; and diagnosing GC in the subject on the basis of the comparison. On the basis of the identification of biological markers associated with gastric cancer, the present invention also provides a method of determining if a subject is susceptible to developing gastric cancer, a method of assessing progression of gastric cancer in a subject, a method for screening a candidate therapeutic agent useful for treating gastric cancer in a subject, and a kit for diagnosing gastric cancer in a subject.

A reagent composition for releasing vitamin D compounds bound to vitamin D-binding protein, an in vitro method for the detection of a vitamin D compound in which the vitamin D compound is released from vitamin D-binding protein by the use of this reagent composition and the reagent mixture obtained in this manner. The use of the disclosed reagent composition to release vitamin D compounds as well as a kit for detecting a vitamin D compound which contains the reagent composition for releasing vitamin D compounds in addition to common detecting reagents.

The present invention concerns a reagent composition for releasing vitamin D compounds bound to vitamin D-binding protein, a method for the detection of a 25-hydroxyvitamin D compound in which the 25-hydroxyvitamin D compound is released from vitamin D-binding protein using this reagent and the mixture obtained in this manner is analyzed, the use of the reagent to release vitamin D compounds as well as a kit for detecting 25-hydroxyvitamin D which contains the reagent for releasing vitamin D compounds in addition to the usual immunological reagents.

The present invention relates to a method for diagnosing a subject's Alzheimer's disease state. The method involves providing a database containing information relating to protein expression levels associated and not associated with Alzheimer's disease. The database includes information relating to at least a majority of the following proteins: albumin, alpha-1-antitrypsin, apolipoprotin E, apolipoprotein J, complement component 3, contactin, fibrin beta, Ig heavy chain, Ig light chain, neuronal pentraxin receptor, plasminogen, proSAAS, retinol-binding protein, transthyretin, and vitamin D binding protein. Information relating to proteins found in one or more cerebrospinal fluid samples from a subject is also provided and a database is used to analyze the information from the subject to diagnose the subject's Alzheimer's disease state. Also disclosed is a computer readable medium and a system, both useful in carrying out the present invention.

The invention relates to the technical field of analysis and detection, and in particular relates to a 25-hydroxyvitamin D content measurement method. According to the method, 25-hydroxyvitamin D is dissociated from vitamin D binding protein in a biological sample through a dissociation liquid; the dissociation liquid is mild in components and free of damage to an antibody; therefore the biological sample, the dissociation liquid and a fluorescent microsphere working solution can be jointly incubated, so that an anti-25-hydroxyvitamin D antibody in the fluorescent microsphere working solutionis fully combined with the 25-hydroxyvitamin D dissociated from the biological sample, the sensitivity can be effectively improved, and the linear range is 3-100 ng / mL.

Method of diagnosis and prognosis of contrast media induced nephropathy (CIN) including the steps of i) taking a urine sample from a patient exposed to the application of contrast media, notably patients subjected to coronary angiography; ii) assessing the level of vitamin D binding protein (VDBP) in the urine sample obtained in step (i); iii) relating the urinary vitamin D binding protein level determined in step (ii) to a pre-selected threshold level. A urinary vitamin D binding protein level higher than the pre-selected threshold level indicates that the patient is at risk of renal failure and in need of a dialysis treatment.

Agents for promoting bone deposition and growth in a mammalian subject. The agents are O-glycosylated and non-glycosylated peptides that are derived from vitamin D binding protein, collectively referred to hereinafter as “DBP” peptides. The DBP peptides are from 3 to 18, preferably from 4 to 14 amino acids in length and comprise a sequence which is at least 80% identical, preferably at least 90% identical to the amino acid sequence of a fragment contained within domain III of DBP. Methods for promoting bone deposition in a subject in need of the same are also provided. The methods comprise administering to the subject a therapeutically effective quantity of an agent selected from the group consisting of an activated form of vitamin D binding protein referred to hereinafter as “ADBP”, one or more DBP peptides, and combinations thereof. The agents may be administered locally or systemically.