Increased inflammatory factors activity in model rats with experimental autoimmune prostatitis

Area of Science:

• Immunology
• Pathology
• Veterinary Science

Background:

• Chronic abacterial prostatitis (CAP) is a prevalent condition with complex etiology.
• Developing reliable animal models is crucial for understanding CAP pathogenesis and testing therapies.

Purpose of the Study:

• To establish an effective experimental model for inducing chronic abacterial prostatitis (CAP) in male rats.
• To investigate the expression of key inflammatory markers in the induced CAP model.

Main Methods:

• Rats were immunized with prostate tissue homogenate supernate (PTHS) and a Pertussis-Diphtheria-Tetanus (PDT) vaccine.
• Immunization involved intra-dermal injections with complete Freund's adjuvant (CFA) and intra-peritoneal injections.
• Assessments included HE staining, TNF-alpha ELISA, and inducible nitric oxide synthase (iNOS) mRNA in-situ hybridization (ISH) at day 45.

Main Results:

• A significant upregulation of TNF-alpha expression was observed in the high dosage model group.
• Macropathology, histopathology, and iNOS ISH results corroborated the inflammatory changes.
• The experimental procedure successfully induced chronic abacterial prostatitis.

Conclusions:

• The described immunization protocol is effective in creating a robust animal model for chronic abacterial prostatitis (CAP).
• This model demonstrates increased TNF-alpha and iNOS expression, consistent with CAP pathology.
• This validated model can be utilized for further research into CAP mechanisms and therapeutic interventions.