Opiate dependence develops due to changes in intracellular signaling caused by long-term exposure to morphine. Here we investigated changes in the mRNA expression of the main classes of G-protein alpha (Galpha) subunits in various brain regions in morphine-dependent rats. Rats received increasing doses of morphine, 10-50 mg/kg, b.i.d., for 14 days. G-protein alpha-subunit mRNA expression was de...

In the past decade opioid pain reliever misuse among the U.S. population has increased to epidemic proportions. While the U.S. has only 4% of the world's population, Americans consume 86% of the world's opioids. In 2011, approximately 13 million people (5% of the U.S. population) reported nonmedical use of prescription opioids, which are now the second most commonly abused class of drug behind ...

Morphine is an exceptionally effective analgesic whose utility is compromised by the development of tolerance and dependence to the drug. Morphine analgesia and dependence are mediated by its activity at the mu opioid peptide (MOP) receptor [1]. The MOP receptor is activated not only by morphine, but also by other opiate drugs such as methadone and endogenous opioids such as endorphins. Morphin...

Many early trials of buprenorphine in opiate dependence used fixed doses and slow induction protocols. However, more recent data show that subjects requiring higher doses need to be stabilised more rapidly. Analysis of ten trials suggests a relationship between days taken to reach a 6 mg buprenorphine tablet equivalent dose and retention of subjects at 4 weeks. Recent US studies show that dosag...

BACKGROUND Frequent relapses in opioid addiction may be a result of abstinentemergent craving. Exposure to various stimuli associated with drug use (drug cues) may trigger craving as a conditioned response to 'drug cues'. AIMS The present study explored the effects of imagery cue exposure on psychophysiological mechanisms of craving, viz. autonomic arousal, in detoxified opiate addicts. MET...

OBJECTIVES To evaluate the role of Gabapentin in the management of Pentazocine dependence for suppressing muscle aching and craving during its withdrawal. MATERIAL AND METHODS Patients of Pentazocine dependence were divided in two groups GpA and GpB (n = 10 in each) and were administered Clonidine (P.O.) in first seven days (acute detoxification phase) and later Naltrexone (P.O.) from seventh...