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- W2057755536 abstract "Studies on rat testicular macrophages (TMs) have indicated that these cells play an important role in testis function by supporting the immunosuppressive environment that protects developing germ cells and by responding to pathogens. By comparison, mouse TMs are essentially uncharacterised due to difficulties in isolating sufficient cells for study. We have established a technique for isolating 95% pure TMs from adult mice by differential adherence. Mouse TMs were cultured for 3h with saline, 10 or 100 ng/mL lipopolysaccharide (LPS) and compared with resident peritoneal macrophages (PMs) and bone marrow-derived macrophages (BMMs). Expression of inflammatory regulators was determined using real-time Q-PCR and AgilentTM microarray analysis. Microarray analysis indicated that each macrophage type displayed very distinct gene expression profiles. There were 526 genes uniquely expressed in TMs at basal levels compared with the other macrophages and 268 genes uniquely expressed by TMs after LPS treatment. Q-PCR determined that LPS induced expression of the anti-inflammatory cytokine interleukin (IL)-10 in each of the macrophage types, with BMMs the strongest responders. LPS stimulated IL-10 mRNA approximately 100-fold in TMs, but only 20-fold in PMs. The anti-inflammatory transforming growth factor-β1 was not significantly induced at this time-point in any macrophage type. In terms of pro-inflammatory mediators, the TM response to LPS was always lower compared to the BMMs. Compared to PMs, the responses of TMs were similar for the hallmark pro-inflammatory cytokine tumour necrosis factor- a, but 40% less for IL-1β. TMs were also deficient in production of IL-6 and cyclooxygenase-2 and IL-12. TMs were therefore relatively strong responders to LPS in terms of IL-10, but weak responders in terms of pro-inflammatory mediators, indicating an immunosuppressive phenotype. The isolation and gene measurement methods established in this study will allow us to use knockout and transgenic mouse models to determine the role for TMs in testicular inflammation/fibrosis models." @default.
- W2057755536 created "2016-06-24" @default.
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- W2057755536 date "2010-01-01" @default.
- W2057755536 modified "2023-09-26" @default.
- W2057755536 title "179. PURIFICATION AND CHARACTERISATION OF MOUSE TESTICULAR MACROPHAGES: GENE EXPRESSION RESPONSE TO LIPOPOLYSACCHARIDE ACTIVATION INDICATES AN IMMUNOSUPPRESSIVE PHENOTYPE" @default.
- W2057755536 doi "https://doi.org/10.1071/srb10abs179" @default.
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