Abstract: The present invention is directed to a biomarker and kit for diagnosing, monitoring and/or staging Alzheimer's disease comprising redox-reactive autoantibodies. The present invention is also directed to a method for diagnosing, monitoring and/or staging Alzheimer's disease which comprises conducting a blood test using the same.

Abstract: The binding specificity of at least one plasma protein suspended or dissolved in a liquid medium is altered by exposing the protein to an oxidizing agent or an electric current sufficient to alter its binding specificity. A masked protein such as an autoantibody can be recovered from blood or blood products or extracts by oxidizing the protein to change its binding specificity.

Abstract: The binding specificity of at least one protein suspended or dissolved in a liquid medium is reversibly altered by exposing the protein to an oxidizing agent or an electric current. A masked protein such as an autoantibody can be detected, isolated and recovered from a biological fluid by subjecting the biological fluid to an oxidizing agent or an electric current to change the binding specificity of masked proteins contained therein.

Abstract: The binding specificity of at least one plasma protein suspended or dissolved in a liquid medium is altered by exposing the protein to an oxidizing agent or an electric current sufficient to alter its binding specificity. A masked protein such as an autoantibody can be recovered from blood or blood products or extracts by oxidizing the protein to change its binding specificity.

Abstract: The binding specificity of at least one plasma protein suspended or dissolved in a liquid medium is altered by exposing the protein to an oxidizing agent or an electric current sufficient to alter its binding specificity. A masked protein such as an autoantibody can be recovered from blood or blood products or extracts by oxidizing the protein to change its binding specificity.

Abstract: The binding specificity of a monoclonal antibody is altered by exposing the monoclonal antibody to an oxidizing agent or an electric potential.

Abstract: A neurodegenerative disease or condition is diagnosed in a subject by obtaining a sample of cerebral spinal fluid from the subject and assaying the sample by an assay method that detects the presence of at least one antiphospholipid autoantibody in the sample, wherein an elevated level of at least one antiphospholipid autoantibody in the sample of cerebral spinal fluid correlates with a neurodegenerative disease or condition in the subject. The neurodegenerative disease or condition may also be diagnosed by assaying a sample of cerebral spinal fluid to detect nitrosylated antibodies, wherein an elevated level of nitrosylated antibodies correlates with a neurodegenerative disease or condition in said subject.

Abstract: The binding specificity of at least one plasma protein suspended or dissolved in a liquid medium is altered by exposing the protein to an oxidizing agent or an electric current sufficient to alter its binding specificity. A masked protein such as an autoantibody can be recovered from blood or blood products or extracts by oxidizing the protein to change its binding specificity.