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Anti-triosephosphate isomerase antibodies in cerebrospinal fluid are associated with neuropsychiatric lupus. 2006

Tomomi Sasajima, and Hiroshi Watanabe, and Shuzo Sato, and Yukio Sato, and Hiromasa Ohira
Fukushima Medical University, Department of Internal Medicine II, School of Medicine, Fukushima 960-1295, Japan.

We detected anti-triosephosphate isomerase antibodies (anti-TPI) in cerebrospinal fluid (CSF) in 5 of 12 neuropsychiatric lupus patients (41.6%) by Western blotting. C3d index was significantly higher in anti-TPI-positive patient (n=5, median 0.446) than in anti-TPI-negative patient (n=7, median 0.098) (p=0.019) CSF samples. TPI was detected from immune complexes (IC) isolated from CSF in 2 of 2 anti-TPI-positive patients tested and was not detected from IC in 5 of 5 anti-TPI-negative patients tested. Our results suggest that anti-TPI form IC in CSF and contribute to the pathogenesis of neuropsychiatric lupus by activating the complement system.

UI MeSH Term Description Entries
D008863 Microspheres Small uniformly-sized spherical particles, of micrometer dimensions, frequently labeled with radioisotopes or various reagents acting as tags or markers. Latex Beads,Latex Particles,Latex Spheres,Microbeads,Bead, Latex,Beads, Latex,Latex Bead,Latex Particle,Latex Sphere,Microbead,Microsphere,Particle, Latex,Particles, Latex,Sphere, Latex,Spheres, Latex
D003167 Complement Activation The sequential activation of serum COMPLEMENT PROTEINS to create the COMPLEMENT MEMBRANE ATTACK COMPLEX. Factors initiating complement activation include ANTIGEN-ANTIBODY COMPLEXES, microbial ANTIGENS, or cell surface POLYSACCHARIDES. Activation, Complement,Activations, Complement,Complement Activations
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001323 Autoantibodies Antibodies that react with self-antigens (AUTOANTIGENS) of the organism that produced them. Autoantibody
D014305 Triose-Phosphate Isomerase An enzyme that catalyzes reversibly the conversion of D-glyceraldehyde 3-phosphate to dihydroxyacetone phosphate. A deficiency in humans causes nonspherocytic hemolytic disease (ANEMIA, HEMOLYTIC, CONGENITAL NONSPHEROCYTIC). EC 5.3.1.1. Phosphotriose Isomerase,Triosephosphate Isomerase,Triosephosphate Mutase,Isomerase, Phosphotriose,Isomerase, Triose-Phosphate,Isomerase, Triosephosphate,Mutase, Triosephosphate,Triose Phosphate Isomerase
D015153 Blotting, Western Identification of proteins or peptides that have been electrophoretically separated by blot transferring from the electrophoresis gel to strips of nitrocellulose paper, followed by labeling with antibody probes. Immunoblotting, Western,Western Blotting,Western Immunoblotting,Blot, Western,Immunoblot, Western,Western Blot,Western Immunoblot,Blots, Western,Blottings, Western,Immunoblots, Western,Immunoblottings, Western,Western Blots,Western Blottings,Western Immunoblots,Western Immunoblottings
D015933 Complement C3d A 302-amino-acid fragment in the alpha chain (672-1663) of C3b. It is generated when C3b is inactivated (iC3b) and its alpha chain is cleaved by COMPLEMENT FACTOR I into C3c, and C3dg (955-1303) in the presence COMPLEMENT FACTOR H. Serum proteases further degrade C3dg into C3d (1002-1303) and C3g (955-1001). C3d Complement,Complement 3d,Complement C3d Fragment,Complement Component 3d,C3d Fragment, Complement,C3d, Complement,Complement, C3d,Component 3d, Complement,Fragment, Complement C3d
D020945 Lupus Vasculitis, Central Nervous System Central nervous system vasculitis that is associated with SYSTEMIC LUPUS ERYTHEMATOSUS. Clinical manifestations may include DEMENTIA; SEIZURES; CRANIAL NERVE DISEASES; HEMIPARESIS; BLINDNESS; DYSPHASIA; and other neurological disorders. Central Nervous System Lupus Vasculitis,Neuropsychiatric Systemic Lupus Erythematosus,Central Nervous System Lupus,Central Nervous System Systemic Lupus Erythematosis,Lupus Meningoencephalitis,Systemic Lupus Erythematosis, Central Nervous System,Lupus Meningoencephalitides,Meningoencephalitides, Lupus,Meningoencephalitis, Lupus

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