Effects of erlong zuoci pills and its effective disassembled prescriptions on gentamycin induced hair cell apoptosis / 中国中药杂志
China Journal of Chinese Materia Medica
;
(24): 2464-2468, 2010.
Article
Dans Chinois
| WPRIM
| ID: wpr-279418
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effects of erlong zuoci (ELZC) pills and its disassembled prescriptions (Shudi-huang-Zexie group and Zexie group) on the enzymatic activity and protein expression changes of the key apoptosis molecules in the gentamycin injured hair cells.</p><p><b>METHOD</b>The model of gentamycin induced ototoxicity in mice cochlear primary cultures was copied. Cochlear organotypic cultures of postnatal day 3-5 (P3-P5) mice were treated with gentamycin alone or in combination with ELZC pills, Shudihuang-Zexie group or Zexie group respectively. The enzymatic activity of Caspase-9 and Caspase-3 was determined by means of fluorescence staining in situ. The protein expression of Bcl-2 and Bax in the hair cell area was examined by immunofluorescence in normal and treated specimens.</p><p><b>RESULT</b>Average optical density analysis indicated that, compared to the normal group, 0.03 mmol x L(-1) gentamycin could significantly activate Caspase-9 and Caspase-3, downregulate the ratio of Bcl-2 and Bax protein expression. Compared to the gentamycin model group, ELZC pills significantly inhibited the enzymatic activity of Caspase-9 and upregulated the ratio of Bcl-2 and Bax protein expression, showing inhibition trend toward the enzymatic activity of Caspase-3. Both Shudihuang-Zexie group and Zexie group could effectively inhibit the enzymatic activity of Caspase-9 and Caspase-3, upregulate the ratio of Bcl-2 and Bax protein expression.</p><p><b>CONCLUSION</b>ELZC pills, Shudihuang-Zexie group and Zexie group can effectively protect hair cells from gentamycin by correcting the abnormal changes of the mitochondrion-dependent signal transduction pathway.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Pharmacologie
/
Médicaments issus de plantes chinoises
/
Gentamicine
/
Expression des gènes
/
Cellules cultivées
/
Apoptose
/
Protéines proto-oncogènes c-bcl-2
/
Biologie cellulaire
/
Caspase-3
/
Caspase-9
Type d'étude:
Étude pronostique
Limites du sujet:
Animaux
langue:
Chinois
Texte intégral:
China Journal of Chinese Materia Medica
Année:
2010
Type:
Article
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