Nephroprotection of Cupressus macrocarpa and Dioon edule

J Pharm Pharmacogn Res 8(5): 434-448, 2020.

Original Article

Protective effect of Cupressus macrocarpa and Dioon edule against gentamicin-induced nephrotoxicity in rats

[Efecto protector de Cupressus macrocarpa y Dioon edule contra la nefrotoxicidad inducida por gentamicina en ratas]

Ghada Mohammad Al-Ashmawy1, Suzy Abd El-Hakeem El-Sherbeni2*

1Biochemistry Department, Faculty of Pharmacy, Tanta University. El-Gharbia, Tanta 31527, Egypt.
2Pharmacognosy Department, Faculty of Pharmacy, Tanta University. El-Gharbia, Tanta 31527, Egypt.
Abstract

Context: It has been reported that Cupressus macrocarpa Hartw. ex Gordon (Cupressaceae) and Dioon edule Lindl. (Zamiaceae) contain compounds with antioxidant and anti-inflammatory effects; therefore, they may exert a nephroprotective effect.

Aims: To explore the renoprotective effect of C. macrocarpa and D. edule and the underlying molecular mechanisms.

Methods: Ten male Wister rats were used for each group of control (1% CMC in saline), gentamicin (GM, 40 mg/kg), D. edule leaves methanol extract (DLM), C. macrocarpa leaves combined petroleum ether and methanol extract (CLEM) and C. macrocarpa roots methanol extract (CRM). Rats were orally administered the extracts (250 mg/kg) daily concomitantly for 9 days with GM. Evaluation of kidney function, histopathology and measuring renal AMPK-α1, NF-κB and iNOS genes expression were carried out. There were no symptoms of systemic adverse effects in any treated group.

Results: Blood urea nitrogen (mg/dL) was significantly reduced by CLEM (24.0 ± 1.205) and CRM (22.889 ± 1.250). Creatinine (mg/dL) was significantly decreased by CLEM (0.59 ± 0.022) and CRM (0.580 ± 0.029). Gene expression of AMPK-α1 enhanced by CLEM (16.717 ± 0.430), CRM (19.18 ± 0.871), DLM (0.417 ± 0.020). iNOS was downregulated by CLEM (0.9 ± 0.056), CRM (1.53 ± 0.044), and DLM (1.642 ± 0.050). NF-κB was decreased by CLEM (1.148 ± 0.076), CRM (0.918 ± 0.065), and DLM (1.783 ± 0.071). CRM and CLEM exhibited normal to mild renal degeneration and mild to moderate expression of iNOS.

Conclusions: C. macrocarpa extracts exhibited significant renoprotective effect and could be considered as a new promising strategy against renal complications.

Keywords: AMPK-α1; blood urea nitrogen; creatinine; iNOS; NF-κB.

Resumen

Contexto: Se ha informado que Cupressus macrocarpa Hartw. ex Gordon (Cupressaceae) y Dioon edule Lindl. (Zamiaceae) contienen compuestos con efectos antioxidantes y antiinflamatorios; por lo tanto, pueden ejercer un efecto nefroprotector.

Objetivos: Explorar el efecto renoprotector de C. macrocarpa y D. edule y los mecanismos moleculares subyacentes.

Métodos: Se utilizaron diez ratas Wister macho para cada grupo de control (1% de CMC en solución salina), gentamicina (GM, 40 mg / kg), extracto metanólico de hojas de D. edule (DLM), extracto combinado de éter de petróleo y metanol de hojas de C. macrocarpa (CLEM) y extracto metanólico de raíces de C. macrocarpa (CRM). A las ratas se les administraron por vía oral los extractos (250 mg/kg) diariamente, de forma concomitante con GM, durante 9 días. Se evaluaron función renal, histopatología y medición de la expresión de genes AMPK-α1, NF-κB e iNOS renales. No hubo síntomas de efectos adversos sistémicos en ningún grupo tratado.

Resultados: El nitrógeno ureico en sangre (mg/dL) se redujo significativamente por CLEM (24,0 ± 1,205) y CRM (22,889 ± 1,250). La creatinina (mg/dL) disminuyó significativamente en CLEM (0,59 ± 0,022) y CRM (0,580 ± 0,029). Expresión génica de AMPK-α1 aumentó para CLEM (16,717 ± 0,430), CRM (19,18 ± 0,871) y DLM (0,417 ± 0,020). iNOS fue regulado negativamente por CLEM (0,9 ± 0,056), CRM (1,53 ± 0,044) y DLM (1,642 ± 0,050). NF-κB se redujo en CLEM (1,148 ± 0,076), CRM (0,918 ± 0,065) y DLM (1,783 ± 0,071). CRM y CLEM exhibieron degeneración renal normal a leve y una expresión leve a moderada de iNOS.

Conclusiones: Los extractos de C. macrocarpa exhibieron un efecto renoprotector significativo y podrían considerarse como una nueva estrategia prometedora contra las complicaciones renales.

Palabras Clave: AMPK-α1; creatinine; iNOS; NF-κB; nitrógeno ureico sanguíneo.

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Citation Format: Al-Ashmawy GM, El-Sherbeni SA (2020) Protective effect of Cupressus macrocarpa and Dioon edule against gentamicin-induced nephrotoxicity in rats. J Pharm Pharmacogn Res 8(5): 434–448.

© 2020 Journal of Pharmacy & Pharmacognosy Research (JPPRes)