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Ternatin pretreatment attenuates testicular injury induced by torsion/detorsion in Wistar rats / Pré-tratamento com ternatina atenua a lesão testicular induzida por torção/destorção em ratos Wistar
Guimarães, Sergio Botelho; Santos, Jefferson Menezes Viana; Aragão, Alan Arruda; Kimura, Osamu Sandes; Silveira, Edilberto R; Vasconcelos, Paulo Roberto Leitão de.
  • Guimarães, Sergio Botelho; UFC. Department of Surgery. LABCEX. BR
  • Santos, Jefferson Menezes Viana; UFC. BR
  • Aragão, Alan Arruda; UFC. Department of Organic and Inorganic Chemistry. BR
  • Kimura, Osamu Sandes; UFC. BR
  • Silveira, Edilberto R; UFC. Department of Organic and Inorganic Chemistry. BR
  • Vasconcelos, Paulo Roberto Leitão de; UFC. Department of Surgery. Postgraduate Program. BR
Acta cir. bras ; 26(4): 325-328, July-Aug. 2011. ilus
Article in English | LILACS | ID: lil-594355
ABSTRACT

PURPOSE:

To investigate the possible protective role of the bioflavonoid ternatin (TTN) when administered before induction of ischemia/reperfusion injury in rat testis.

METHODS:

Thirty-six Wistar rats were randomly assigned to 3 groups (n=12), divided in 2 subgroups (n=6). Saline 2.0ml (G-1), dimethylsulfoxide (DMSO) 3 percent solution (G-2) or TTN 12 mg/kg/dose (G-3) was administered ip. to all rats, respectively, 21, 12 and 1 hour before torsion. Anesthetized rats were subjected to ischemia (3 hours) induced by 720º torsion of the spermatic cord. Right testis and arterial blood samples were collected at the end of ischemia (T-0), and 3 hours later (T-3) for assessment of testis malonaldehyde (MDA), reduced glutathione (GSH), and plasma total antioxidant power (TAP).

RESULTS:

MDA decreased significantly (p<0,001) in G-2 and G-3 in T-0 and T-3 timepoints. Additional decrease in MDA was seen in G-3 after 3 hours of reperfusion (T-3). GSH increased significantly in G-2 (p<0.001) and G-3 (p<0.05) at the end the ischemia (T-0). A significant increase in GSH was seen 3 hours after testis detorsion (T-3) in G-2 rats. TAP values remained unchanged.

CONCLUSION:

The data provides in vivo evidence of the antiperoxidative and antioxidative properties of TTN in torted rat testis.
RESUMO

OBJETIVO:

Investigar o possível efeito protetor do bioflavonóide ternatina (TTN) quando administrado antes da indução da lesão de isquemia/reperfusão testicular em ratos.

MÉTODOS:

Trinta e seis ratos Wistar, aleatoriamente distribuídos em três grupos (n=12) divididos em dois subgrupos (n=6) cada foram tratados com solução salina (G-1), dimetilsulfóxido (DMSO) 3 por cento (G-2) ou TTN 12 mg/kg/dose (G-3), administrados i.p. 21, 12 e 1 hora antes da torção. Ratos anestesiados foram submetidos à isquemia (3 horas) induzida por torção (720º) do cordão espermático direito. Amostras (testículo ipsilateral e 3,0 ml de sangue arterial) foram coletadas ao final da isquemia (T-0), e 3 horas depois (T-3) para a avaliação das concentrações de malonaldeído (MDA), glutationa reduzida (GSH) no testículo e capacidade antioxidante total (TAP) no plasma.

RESULTADOS:

MDA diminuiu significativamente nos grupos G-2 e G-3 nos tempos T-0 e T-3. Houve diminuição adicional no G-3 após 3 horas. GSH aumentou significativamente nos grupos G-2 (p<0,001) e G-3 (p<0,05) no T-0 e T-3 no G-2. TAP permaneceu inalterada.

CONCLUSÃO:

Os achados fornecem evidências in vivo das propriedades antioxidantes e antiperoxidativas da TTN na T/D do testículo do rato.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Spermatic Cord Torsion / Testis / Flavonoids / Reperfusion Injury / Ischemia Type of study: Evaluation studies Limits: Animals Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: UFC/BR

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Full text: Available Index: LILACS (Americas) Main subject: Spermatic Cord Torsion / Testis / Flavonoids / Reperfusion Injury / Ischemia Type of study: Evaluation studies Limits: Animals Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: UFC/BR