Effect of chaetomellic acid on hematocrit, urine specific gravity and urinary v...

• Author(s): Nogueira, António José M. ; Faustino-Rocha, Ana ; Teixeira-Guedes, Catarina ; Teixeira, Joana ; Oliveira, Paula ; Colaço, Bruno ; Pires, Maria
• Date: 2012
• Persistent ID: http://hdl.handle.net/10198/10613
• Origin: Biblioteca Digital do IPB
• Subject(s): Chaetomellic acid; Rat
• Document Type: Conference Object
• Language: English

Description

Chaetomellic acid (CA) is a potent and highly specific inhibitor of ras farnesyl-protein transferase that seems to reduce both functional and histological damage in uninephrectomized rats subjected to renal ischaemia-reperfusion injury. The aim of this work was to evaluate the effect of chronic treatment with CA on hematocrit, urine specific gravity and urinary volume in a model of renal mass reduction. Male Wistar rats were subjected to 5/6 nephrectomy (RMR) or sham-operated (SO). One week after surgery, rats have been placed in four experimental groups: RMR rats without treatment (n=13); RMR rats treated with CA (n=13); SO rats without treatment (n=13); SO rats treated with CA (n=13). CA was intraperitoneally administered in a dose of 0.23 μg/kg three times a week for three months. We observed that animals from SO groups showed a higher hematocrit and urine specific gravity, and a lower urinary volume than animals from RMR groups (p<0.05). We did not observe differences between treated and no treated animals. These results suggest that three months of treatment with CA does not have a beneficial effect on hematocrit, urine specific gravity and urinary volume. However, these are preliminary data that warrant a larger scale study.