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Purified serum amyloid P component (SAP), the major acute-phase reactant of mice, augmented the in vitro listericidal activity of inflammatory (elicited) macrophages, bone marrow-derived monocytes, and macrophages from a subcutaneous site of inflammation. Monocytes and macrophages from C57BL/B6 mice, which are relatively resistant to Listeria monocytogenes, exhibited a significantly greater enh...

OBJECTIVE Seropositive arthralgia patients (SAP) are at high risk of developing rheumatoid arthritis (RA). This prospective study aimed to determine whether altered peripheral regulatory T-cells (Tregs) and defined subsets, besides a broadened anti-citrullinated protein antibody (ACPA) response, may qualify as biomarkers for RA development in SAP. METHODS Thirty-four consecutive SAP were pros...

Saporin (SAP) or SAP conjugates injected into the nucleus tractus solitarii (NTS) of rats kill astrocytes. When injected in its unconjugated form, SAP produces no demonstrable loss of or damage to local neurons. However bilateral injections of SAP significantly attenuate responses to activation of baroreceptor reflexes that are mediated by transmission of signals through glutamate receptors in ...

Serum amyloid P component (SAP) belongs to the pentraxin family of proteins, and it is evolutionarily conserved, and involved in amyloidosis, innate immunity, inflammation, and apoptosis. We have previously described SAP in the male reproductive tract, where it occurs in seminal fluid, on spermatozoa, and in epididymal, seminal vesicle, and prostate tissue. In the present investigation, our aim...

Human serum amyloid P component (SAP) is a glycoprotein structurally belonging to the pentraxin family of proteins, which has a characteristic pentameric organization. Mice with a targeted deletion of the SAP gene develop antinuclear Abs, which was interpreted as evidence for a role of SAP in controlling the degradation of chromatin. However, in vitro SAP also can bind to phosphatidylethanolami...

Experimental autoimmune encephalomyelitis (EAE) is a CD4(+) T cell-mediated disease of the central nervous system. Serum amyloid P component (SAP) is a highly conserved plasma protein named for its universal presence in amyloid deposits. Here we report that SAP-transgenic mice had unexpectedly attenuated EAE due to impaired encephalitogenic responses. Following induction with myelin oligodendro...

AIM This study aimed to investigate the efficacy and safety of caspofungin as secondary antifungal prophylaxis (SAP) and subsequent maintenance therapy for SAP in hematological malignancy patients. METHODS Forty four patients receiving caspofungin for SAP and 43 patients not receiving any SAP agents during their subsequent chemotherapy or HSCT were reviewed retrospectively. The clinical chara...

X-linked lymphoproliferative disease is caused by mutations affecting SH2D1A/SAP, an adaptor that recruits Fyn to signal lymphocyte activation molecule (SLAM)-related receptors. After infection, SLAM-associated protein (SAP)-/- mice show increased T cell activation and impaired humoral responses. Although SAP-/- mice can respond to T-independent immunization, we find impaired primary and second...

The mammalian spliceosome-associated protein, SAP 49, is associated specifically with U2 snRNP and is the most efficiently UV cross-linked protein in the spliceosomal complexes A, B, and C. We show here that SAP 49 cross-links to a region in the pre-mRNA immediately upstream of the branchpoint sequence in the prespliceosomal complex A. In addition to the RNA-binding activity of SAP 49, we show ...