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Gentamicin Induced Biochemical Changes in Auditory Cortex of Adult Albino Rats


  • Asad Mohammad Rehan

    (Assistant Professor, Department of Basic Medical Sciences, College of Medicine, Majmmah University)

  • Nasir Nazim

    (Assistant Professor, Department of Anatomy, College of Allied Health Sciences, King Khalid University, Abha, Saudi Arabia.2)

  • Afzal Kamran

    (Lecturer, Department of Basic Medical Sciences, College of Medicine, Majmmah University, Majmaah, Saudi Arabia.3)

  • Sami Waqas

    (Lecturer, Department of Public health and Community medicine, College of Medicine, Majmmah University, Majmaah, Saudi Arabia.4)

  • Jafari Fahim Haider

    (Associate Professor, Department of Basic Medical Sciences, College of Medicine, Majmaah University, Majmaah, Saudi Arabia.)


Background: The aminoglycoside antibiotics have been the drug of choice for the treatment of tuberculosis and resistant cases of septicaemia, but their use has been selective and restricted due to their known toxicities specially the ototoxicity and nephrotoxicity. Aminoglycosides have good activity against many multi-drug resistant Gram negative bacilli. Gentamicin, due to it cost effectiveness has been used in most of the trials as compared to other aminoglycoside. Most studies documented the peripheral toxicities of gentamicin without any concern of central neurotoxicity. Objective: the study was planned to observe the effects of gentamicin on the biochemical parameters (specially, sodium, potassium and calcium) in auditory cortex of albino rats. Methods: It was an experimental study. Twenty rats were randomly divided in two groups; Group I (Experimental: n = 10) received intramuscular injection of Gentamicin for twenty one days and Group II (Control: n =10) received normal saline intramuscularly. Tissue samples were taken from the area around lateral sulcus of rat cortex i.e. auditory cortex. The samples were homogenized and digested in concentrated nitric acid (100mg/ml). The supernatant solution was used for estimation of sodium and potassium by Flame Photometry and calcium level by the method of Clark and Collip. Results: The calcium level was increased; the sodium level was decreased while potassium level remained unaltered.Conclusion: Alteration in sodium and calcium level demonstrates central neurotoxicity of gentamicin.

Suggested Citation

  • Asad Mohammad Rehan & Nasir Nazim & Afzal Kamran & Sami Waqas & Jafari Fahim Haider, 2013. "Gentamicin Induced Biochemical Changes in Auditory Cortex of Adult Albino Rats," Journal of Asian Scientific Research, Asian Economic and Social Society, vol. 3(9), pages 876-881, September.
  • Handle: RePEc:asi:joasrj:2013:p:876-881

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