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Paper Information

Journal:   IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES   MAY 2014 , Volume 17 , Number 5; Page(s) 312 To 317.
 
Paper: 

ALLOPREGNANOLONE SUPPRESSES DIABETES-INDUCED NEUROPATHIC PAIN AND MOTOR DEFICIT THROUGH INHIBITION OF GABAA RECEPTOR DOWN-REGULATION IN THE SPINAL CORD OF DIABETIC RATS

 
 
Author(s):  AFRAZI SAMIRA, ESMAEILI MAHANI SAEED*
 
* DEPARTMENT OF BIOLOGY, FACULTY OF SCIENCES, SHAHID BAHONAR UNIVERSITY OF KERMAN, KERMAN, IRAN
 
Abstract: 

Objective (s): Painful diabetic neuropathy is associated with hyperexcitability and hyperactivity of spinal cord neurons. However, its underlying pathophysiological mechanisms have not been fully clarified. Induction of excitatory/inhibitory neurotransmission imbalance at the spinal cord seems to account for the abnormal neuronal activity in diabetes. Protective properties of neurosteroids have been demonstrated in numerous cellular and animal models of neurodegeneration.
Materials and Methods: Here, the protective effects of allopregnanolone, a neurosteroid were investigated in an in vivo model of diabetic neuropathy. The tail-flick test was used to assess the nociceptive threshold. Diabetes was induced by injection of 50 mg/kg (IP) streptozotocin. Seven weeks after the induction of diabetes, the dorsal half of the lumbar spinal cord was assayed for the expression of ?2 subunit of GABAA receptor using semiquantitative RT-PCR.
Results: The data shows that allopregnanolone (5 and 20 mg/kg) markedly ameliorated diabetes-induced thermal hyperalgesia and motor deficit. The weights of diabetic rats that received 5 and 20 mg/kg allopregnanolone did not significantly reduce during the time course of study. Furthermore, this neurosteroid could inhibit GABAA receptor down-regulation induced by diabetes in the rat spinal cord.
Conclusion: The data revealed that allopregnanolone has preventive effects against hyperglycemic-induced neuropathic pain and motor deficit which are related to the inhibition of GABAA receptor down-regulation.

 
Keyword(s): ALLOPREGNANOLONE, DIABETIC NEUROPATHY, GABAA RECEPTOR, HYPERALGESIA, RATS
 
 
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Click to Cite.
APA: Copy

AFRAZI, S., & ESMAEILI MAHANI, S. (2014). ALLOPREGNANOLONE SUPPRESSES DIABETES-INDUCED NEUROPATHIC PAIN AND MOTOR DEFICIT THROUGH INHIBITION OF GABAA RECEPTOR DOWN-REGULATION IN THE SPINAL CORD OF DIABETIC RATS. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES, 17(5), 312-317. https://www.sid.ir/en/journal/ViewPaper.aspx?id=405526



Vancouver: Copy

AFRAZI SAMIRA, ESMAEILI MAHANI SAEED. ALLOPREGNANOLONE SUPPRESSES DIABETES-INDUCED NEUROPATHIC PAIN AND MOTOR DEFICIT THROUGH INHIBITION OF GABAA RECEPTOR DOWN-REGULATION IN THE SPINAL CORD OF DIABETIC RATS. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES. 2014 [cited 2021May12];17(5):312-317. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=405526



IEEE: Copy

AFRAZI, S., ESMAEILI MAHANI, S., 2014. ALLOPREGNANOLONE SUPPRESSES DIABETES-INDUCED NEUROPATHIC PAIN AND MOTOR DEFICIT THROUGH INHIBITION OF GABAA RECEPTOR DOWN-REGULATION IN THE SPINAL CORD OF DIABETIC RATS. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES, [online] 17(5), pp.312-317. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=405526.



 
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