Alberti LR, Vasconcellos LDS, Petroianu A. Cyclosporine reduces the spleen dimensions in rabbits.
Acta Cir Bras 2021;
36:e360402. [PMID:
33978094 PMCID:
PMC8112103 DOI:
10.1590/acb360402]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/18/2021] [Indexed: 11/29/2022] Open
Abstract
Purpose
To assess the influence of prolonged cyclosporine use on the macro- and
microscopic morphology of the spleen.
Methods
16 adult rabbits were divided into two groups (n = 8): group 1 – a placebo
group, which was followed-up over a period of nine months; group 2 – which
had taken an oral dose of cyclosporine (10
mg·kg–1·day–1) over nine months. At the end of
this period, the splenic histoarchitecture of all animals was evaluated and
the splenic corpuscles were measured.
Results
The spleens of the first group presented normal characteristics and
dimensions. The second group, however, had a reduction in all dimensions and
its tissue texture had become soft. The white pulp and the perivascular
sheath had become reduced in size and the number of lymphoid follicles had
also fallen (p = 0.002), manifesting less splenic corpuscles (p = 0.0012)
and lymphocyte nuclear pigments (p = 0.03).
Conclusions
Prolonged use of cyclosporine reduces the spleen size, transforming it into a
soft organ associated with a decrease in white pulp, perivascular sheath,
lymphoid follicles and nuclear pigments in rabbits.
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