Objective: To compare different types of peritoneal fibrosis models in rats.
Methods: Thirty-four SD rats were divided into 5 groups: control group (Group 1), normal saline group (Group 2), high glucose group (4.25% peritoneal dialysate, 4.25% PDF, Group 3), high glucose + lipopolysaceharides (LPS) group (4.25% PDF + LPS, Group 4), high glucose + erythromycin group (4.25% PDF + lactobionate erythromycin, Group 5). A 2-hour peritoneal equilibration test (PET) was performed after 5 weeks. Then animals were humanely killed. Dialysate-to-plasma urea ratio (D/ Purea), glucose reabsorption (D2/D0), net ultrafiltration (UF) volume were determined. The level of fibronectin in peritoneal tissues was measured by immunohistochemical method. Peritoneal membrane histology was evaluated by light microscopy.
Results: The D2/D0 ratio and net ultrafiltration volume in Groups 3, 4, and 5 were significantly lower than those in Groups 1 and 2 (P < 0.05) . The D/Purea ratio in Groups 3, 4 and 5 were significantly higher than that in Groups 1 and 2 (P < 0. 05 ). The level of fibronectin in Groups 3, 4 and 5 were significantly higher than that in Groups 1 and 2 (P < 0.05 ).
Conclusion: Different types of peritoneal fibrosis models in rats has been established. The best model is high clusion glucose + erythromycin.
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ACS Appl Bio Mater
January 2025
Department of Joint Surgery, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China.
Objective: This study aimed to investigate the efficacy of M3-DPPE liposomal nanoparticles encapsulated with mRNA encoding cytokines (M3-mRNAs) in targeting macrophages for the treatment of inflammation-induced joint injury.
Methods: , M3-mRNAs were administered to peritoneal exudate macrophages (PEMs), and the uptake was assessed using flow cytometry. The mechanism of uptake was investigated by blocking the CLEC12A pathway with M3-SiCLEC12A and observing CD206-mediated endocytosis.
Eur J Nucl Med Mol Imaging
January 2025
Division of Rheumatology and Clinical Immunology, Department of Internal Medicine IV, LMU Munich, Munich, Germany.
Clin Rheumatol
January 2025
Department of Rheumatology and Immunology, The First Affiliated Hospital of Naval Medical University, Shanghai, 200433, China.
Objective: Retroperitoneal fibrosis (RPF) is a rare condition marked by inflammation and fibrosis affecting the peritoneal and retroperitoneal soft tissues. In recent years, the identification of IgG4-related diseases has brought to light a significant association with fibrous disorders, including RPF, which were once considered independent. In this comprehensive cohort study, we performed a comparative analysis of the demographic, clinical, laboratory, histopathological, and therapeutic characteristics between patients with IgG4-related RPF and those with idiopathic retroperitoneal fibrosis (iRPF).
View Article and Find Full Text PDFFront Immunol
January 2025
Department of Nephrology, Second Hospital of Jilin University, Changchun, China.
Long-term exposure of the peritoneum to peritoneal dialysate results in pathophysiological changes in the anatomical organization of the peritoneum and progressive development of peritoneal fibrosis. This leads to a decline in peritoneal function and ultrafiltration failure, ultimately necessitating the discontinuation of peritoneal dialysis, severely limiting the potential for long-term maintenance. Additionally, encapsulating peritoneal sclerosis, a serious consequence of peritoneal fibrosis, resulting in patients discontinuing PD and significant mortality.
View Article and Find Full Text PDFFront Endocrinol (Lausanne)
January 2025
Celvia CC AS, Tartu, Estonia.
Background: Endometriosis is characterized by the ectopic growth of endometrial-like cells, causing chronic pelvic pain, adhesions and impaired fertility in women of reproductive age. Usually, these lesions grow in the peritoneal cavity in a hypoxic environment. Hypoxia is known to affect gene expression and protein kinase (PK) activity.
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