Martins AL, Parreira ABS, Grossi MLFJ, Benevides RDA, da Motta LL, Pimassoni LHS, Borjaili ASD, Paulo MSL, Paulo DNS. Study of the upper pole after subtotal splenectomy in rats.
Acta Cir Bras 2023;
37:e371103. [PMID:
36629530 PMCID:
PMC9829190 DOI:
10.1590/acb371103]
[Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 10/15/2022] [Indexed: 01/11/2023] Open
Abstract
PURPOSE
To evaluate macro/microscopic viability of the upper pole (UP) in rats after 80 days of subtotal splenectomy preserving the upper pole (SSPUP).
METHODS
Twenty-five male Wistar rats were submitted to SSPUP. After 80 days, the rats were euthanized, and the remaining UP was evaluated macroscopically regarding appearance, color, consistency, length, width, thickness, and presence of fibrosis/necrosis; and microscopically regarding presence of red and white pulp, fibrosis/necrosis.
RESULTS
Two rats died during surgery and were removed from the statistical analysis. There was statistically significant increase in length and width between the pre and postoperative in the experimental group, with no significant difference in thickness. In the manipulation group, the macroscopic appearance of the spleen was normal in pre and postoperative, with viability preserved. In the experimental group, two UP of the spleen were not found during the second surgery. Macroscopically, it was observed absence of fibrosis and necrosis in all cases. Microscopically, the white and red pulp were intact in both groups. Two spleens of rats in the manipulation group presented areas with fibrosis and necrosis focus, which were not enough to be considered inviable.
CONCLUSIONS
The UP of the spleen remained viable in 91.3% of the cases.
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