BACKGROUND Herbal medical compounds and their major constituent have been used in the management and treatment of opioid withdrawal syndrome and pain. This study was carried out to clarify the effect of curcumin, the major compound of turmeric, on morphine withdrawal syndrome in mouse model and its possible mechanisms of pain relieving activity by assessing in writhing test as a model of viscer...

As long-term opioids are increasingly used for control of chronic pain, how pain affects the rewarding effect of opioids and hence risk of prescription opioid misuse and abuse remains a healthcare concern and a challenging issue in current pain management. In this study, using a rat model of morphine self-administration, we investigated the molecular mechanisms underlying the impact of pain on ...

Increased gastrointestinal motility in mice as one of the withdrawal symptoms of commonly abused drugs like diazepam or morphine and its possible mechanism of action was studied. Male Laka mice (20-25 g) were made addict to either diazepam (20 mg/kg, ip for 7 days) or morphine (10 mg/kg, sc for 9 days). Withdrawal symptoms were noted 24 hr after the last injection of diazepam or morphine. The a...

The role of stress in drug addiction is well established. The negative affective states of withdrawal most probably involve recruitment of brain stress neurocircuitry (e.g. induction of hypothalamo-pituitary-adrenocortical –HPAaxis, noradrenergic and corticotrophin-releasing factor activity). The present study investigated the role of CRF receptor-1 subtype (CRF1R) on the response of brain stre...

Introduction: The influence of morphine on pituitary secretion through µmu receptors has been nearly known. It is also reported that morphine has an effect on cell proliferation. In the present study we investigated the effect of morphine on the proliferation of acidophil cells of adenohypophysis in male rat. Method: This study has been carried out on 14 adult male Wistar rats divided into two ...

Much research has focused on pathways leading to opiate addiction. Pathways opposing addiction are more difficult to study but may be critical in developing interventions to combat drug dependence and withdrawal. Galanin decreases firing of locus coeruleus neurons, an effect hypothesized to decrease signs of opiate withdrawal. The current study addresses whether galanin affects morphine withdra...

Rats were subject to daily injections of morphine or saline and were then allowed to spontaneously withdraw from morphine for 4 days. Mean arterial blood pressure (MAP) and heart rate (HR) were recorded continuously, via radiotelemetry, during the development of, and recovery from, opiate dependence. Injections of morphine produced pronounced and prolonged increases in MAP and HR which increase...

Objective This study was initiated to investigate the effect of Portulaca oleraceae on morphine dependence in mice. Materials and Methods Dependence was induced using the subcutaneous injections of morphine for 3 days. On the day 4, morphine injected 2 h prior to intraperitoneal injection of naloxone. The plant extracts ethanolic or aqueous administered 0.5 h before the final dose of morphine. ...

Abstract Regarding the proven anticonvulsant effect of Zhumeria majdae essential oil (ZMEO) in previous studies we were prompted to investigate ZMEO effects on tolerance morphine and withdrawal syndrome. Tolerance was induced mice by subcutaneous injection 2.5 mg/kg for 4 days. Subsequent doses (20 mg/kg) used study expression development tolerance. Clonidine as standard drug inhibit syndrome s...