The present invention relates to detecting serum anti-FadA antibodies in test samples from a patient. Additionally, aspects of the present invention provide the basis for detection of serum anti-FadA antibody levels from test samples and correlation with various conditions of clinical relevance.

The present invention relates to detecting serum anti-FadA antibodies in test samples from a patient. Additionally, aspects of the present invention provide the basis for detection of serum anti-FadA antibody levels from test samples and correlation with various conditions of clinical relevance.

The present disclosure provides antibodies that specifically bind to botulinum neurotoxins. The antibodies and derivatives thereof that specifically bind to the neutralizing epitopes provided herein can be used in methods to specifically bind and, in some embodiments, neutralize, botulinum neurotoxin and are therefore also useful in the treatment.

Provided are modified bacteria and derivatives thereof that express antigens of interest. In some embodiments, the bacterium has a reduced genome and induces an enhanced immune response against the antigen of interest when administered to a subject as compared to an immune response that would have been induced by a bacterium of the same strain that has a full complement of genes. In some embodiments, the antigen is expressed on a surface of a bacterium. Also provided are method for producing antibody against antigens of interest, vaccine compositions, methods for vaccinating subjects, methods for treating cancers in subjects, methods for modulating inappropriate and undesirable immune response, methods for targeting materials in or on a human or animal that may be the cause of disease or otherwise undesirable phenotypes, and expression vectors for expressing antigens on the surface of reduced genome bacteria.

An objective is to provide an Fc-modified antibody or the like having a long serum half-life according to a CCAP method, more specifically, an antibody or the like where IgBP is bound to only one site, based on findings of the inventors. Provided is an objective antibody or the like by purification and production of an Fc-modified antibody or the like with a column bound to an Fc region of an antibody. Specifically, an antibody where only one of two binding sites of Fc is selectively modified is provided by allowing an IgBP-bound antibody produced by a CCAP method to adsorb to a carrier of an IgBP-immobilized column, or forming a state where only one Fc of an antibody is bound to an IgBP binding column and then adding a peptide reagent for CCAP to the column to perform a reaction of a CCAP method in the column.

Disclosed herein are isolated and purified Staphylococcus aureus bi-component leukocidin, referred to herein as LukAB, and its components LukA and LukB, antibodies specific to LukA, antibodies specific to LukB, therapeutic compositions containing LukA and/or LukB, or anti-LukA and/or anti-LukB antibodies, uses of the compositions to treat acute inflammatory conditions or S. aureus infection, methods for identifying inhibitors of LukAB-mediated cytotoxicity of human phagocytes, and methods for using LukAB as a marker to predict severity of S. aureus infection.

Described herein are methods of treating, diagnosing, and/or prognosing a disease in a subject relating to detection of the glycosylation state of the antibodies present in the subject. In some embodiments, the disease can be an infection. In some embodiments, an antibody glycosylation state that is indicative of the presence of a disease, or a need for treatment of a disease can be reduced glycosylation (e.g., galactosylation, sialation, fucosylation, and/or afucosylated branched glycoforms).

Provided herein are immunogenic compositions that may be used, in some aspects, to induce an immune response against an Ehrlichia such as Ehrlichia cams. In some embodiments, the immunogenic composition comprises an E. canis bacterin and/or adjuvant, such as for example an emulsion or liposomal adjuvant. Related methods such as for diagnosis of or vaccination against ehrlichiosis are also provided.

The present invention relates to the use of plasma immunoglobulin, such as intramuscular immunoglobulin, in combination with polyclonal antigen-specific immunoglobulin in the treatment or prevention of autoimmune diseases. The invention furthermore relates to a pharmaceutical composition for the treatment or prevention of autoimmune diseases comprised of plasma immunoglobulin in combination with polyclonal antigen-specific immunoglobulin.

Disclosed are P. gingivalis antibodies raised against a chimeric or fusion protein, wherein the chimeric or fusion protein comprises a first peptide joined directly or through a linker to a second peptide or polypeptide, wherein (A) the first peptide comprises a region of a P. gingivalis trypsin-like enzyme and (B) the second peptide or polypeptide comprises an adhesin domain of P. gingivalis.