Time Dependent Antinociceptive Effects of Morphine and Tramadol in the Hot Plate Test: Using Different Methods of Drug Administration in Female Rats

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GHOLAMI MORTEZA; SABOORY EHSAN; Mehraban Sogol; NIAKANI AFSANEH; BANIHABIB NAFISEH; Azad Mohamad Reza; Fereidoni Javid

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Journal: Iranian Journal of Pharmaceutical Research Year:2015 | Volume:14 | Issue:1 Page(s): 303-311

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Title

Time Dependent Antinociceptive Effects of Morphine and Tramadol in the Hot Plate Test: Using Different Methods of Drug Administration in Female Rats

Author(s)

Keywords

Morphine

Tramadol

Antinociceptive

Hot plate

Rat

Abstract

Morphine and Tramadol which have analgesic effects can be administered acutely or chronically. This study tried to investigate the effect of these drugs at various times by using different methods of administRation (intraperitoneal, oral, acute and chronic). Sixty adult female Rats were divided into six groups. They received saline, Morphine or Tramadol (20 to 125 mg/Kg) daily for 15 days. A Hot plate test was performed for the Rats at the 1st, 8th and 15th days. After drug withdrawal, the Hot plate test was repeated at the 17th, 19th, and 22nd days. There was a significant correlation between the day, drug, group, and their interaction (P<0. 001). At 1st day (d1), both Morphine, and Tramadol caused an increase in the Hot plate time comparing to the saline groups (P<0. 001), while there was no correlation between drug administRation methods of Morphine and/or Tramadol. At the 8th day (d8), Morphine and Tramadol led to the most powerful analgesic effect comparing to the other experimental days (P<0. 001). At the 15th day (d15), their effects diminished comparing to the d8. After drug withdrawal, analgesic effect of Morphine, and Tramadol disappeared. It can be concluded that the analgesic effect of Morphine and Tramadol increases with the repeated use of them. Thereafter, it may gradually decrease and reach to a level compatible to d1. The present data also indicated that although the analgesic effect of Morphine and Tramadol is dose-and-time dependent, but chronic exposure to them may not lead to altered nociceptive responses later in life.

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APA: Copy

GHOLAMI, MORTEZA, SABOORY, EHSAN, Mehraban, Sogol, NIAKANI, AFSANEH, BANIHABIB, NAFISEH, Azad, Mohamad Reza, & Fereidoni, Javid. (2015). Time Dependent Antinociceptive Effects of Morphine and Tramadol in the Hot Plate Test: Using Different Methods of Drug Administration in Female Rats. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH (IJPR), 14(1), 303-311. SID. https://sid.ir/paper/288503/en

Vancouver: Copy

GHOLAMI MORTEZA, SABOORY EHSAN, Mehraban Sogol, NIAKANI AFSANEH, BANIHABIB NAFISEH, Azad Mohamad Reza, Fereidoni Javid. Time Dependent Antinociceptive Effects of Morphine and Tramadol in the Hot Plate Test: Using Different Methods of Drug Administration in Female Rats. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH (IJPR)[Internet]. 2015;14(1):303-311. Available from: https://sid.ir/paper/288503/en

IEEE: Copy

MORTEZA GHOLAMI, EHSAN SABOORY, Sogol Mehraban, AFSANEH NIAKANI, NAFISEH BANIHABIB, Mohamad Reza Azad, and Javid Fereidoni, “Time Dependent Antinociceptive Effects of Morphine and Tramadol in the Hot Plate Test: Using Different Methods of Drug Administration in Female Rats,” IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH (IJPR), vol. 14, no. 1, pp. 303–311, 2015, [Online]. Available: https://sid.ir/paper/288503/en

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