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Background and Aim: Despite the economic importance of buffalo as a main source of milk and meat, only little attention has been directed to its immune and reproductive performance. The early diagnosis of subclinical endometritis may reduce the economic loss of buffalo’s production. The difference in expression profiles of immunity-related genes has an important role in the early detection of subclinical endometritis. This study aimed to assess the expression of five immunity-related genes: TGFBR1, PTGER2, PTGER4, HP and CXCL5 in endometritis-infected buffaloes. Materials and Methods: Total RNA was extracted from 120 buffalo uterine samples; 60 infected with endometritis and 60 healthy ones. Qt-PCR was performed on cDNA synthesized from extracted RNA using Sybr green and GAPDH as a house-keeping gene. Results: The results showed the up-regulation of two tested genes; TGFBR1 and CXCL5 in endometritis-infected buffalo compared to healthy animals by 7.9 and 4.3 folds, respectively at a significance level of p<0.05. The other three tested genes; PTGER2, PTGER4 and HP were down-regulated in buffalo during endometritis infection at different levels; PTGER2 and HP (0.6 folds, p<0.05) and PTGER4 (0.4 fold, p= 0.2). Conclusions: It is to be concluded that the assessment of expression of inflammation-related immunity genes may have an effective role on the detection of endometritis infection in buffalo during its early stages and this early diagnosis can reduce the economic loss of buffalo production and reproduction.