{
  "id": 2318526,
  "title": "CD8+ T CELLS ASSOCIATE WITH FORMING GLANDULAR NODULES IN TOXOPLASMA GONDII-INDUCED PROSTATIC HYPERPLASIA AND HUMAN BPH",
  "url": "https://urgent.news/2026/08/20/cd8-t-cells-associate-with-forming-glandular-nodules-in-toxoplasma",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-08-20T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.17.745253v1?rss=1"
  },
  "original_language": "en",
  "account": "Chronic inflammation is a prevalent histological trait in Benign Prostatic Hyperplasia (BPH), with T cells playing a crucial role in the immune response. As BPH advances, the formation of nodules is often observed, yet the connection between T cell infiltration, nodule development, and BPH progression remains unclear. Utilizing a Toxoplasma gondii (T. gondii) model and human samples, researchers examined the types of T cells present during prostatic hyperplasia and their relationship with nodule formation in the prostate.\n\nMale CBA/j mice were intraperitoneally infected with T. gondii parasites, and flow cytometry was employed to assess the quantity of CD4+ and CD8+ T cells in the prostate. Histological analysis was conducted to evaluate microglandular hyperplasia (MGH), while immunofluorescence was utilized to quantify and examine the distribution of CD4+ and CD8+ T cells, comparing them to human BPH tissue samples.\n\nThe findings indicated that T. gondii infection in male mice led to an acute increase in both CD4+ and CD8+ T cells within the prostate, with CD8+ cells persisting chronically. Hematoxylin and eosin (H&E) staining confirmed the presence of glandular nodules at this stage. Immunofluorescence revealed that CD8+ cells were located near the formation of glandular nodules compared to non-nodular glands. Additionally, a greater number of CD8+ cells were found in non-nodular glands within nodular BPH tissue as opposed to non-nodular BPH tissue.\n\nMoreover, the study discovered a higher prevalence of CD8+ cells in patients with T. gondii IgG antibodies compared to those without the antibodies. All T. gondii IgG+ patients exhibited nodular BPH, while all but one IgG- patient had non-nodular BPH. This research, the first to investigate the presence and location of CD4+ and CD8+ T cells within nodular and non-nodular BPH glands, establishes an association between the presence of CD8+ T cells and nodular progression. This connection was observed in both human prostate tissue and the T. gondii model. Consequently, CD8+ T cells may contribute to the advancement of nodular BPH, and T. gondii infection may facilitate this CD8+ T cell-mediated response.",
  "summary": "Background: Chronic inflammation is the most common histological feature in Benign Prostatic Hyperplasia (BPH), and T cells are a key component of immune infiltrate. Advanced BPH is commonly associated with the formation of nodules, but it remains unclear whether a link exists among T cell infiltration, nodular development, and BPH progression. Using a Toxoplasma gondii (T. gondii) model and…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}