piate abuse and dependence is one of the world's major health problems. (7,11). Different therapeutic methods have been presented for the treatment of opiate addiction. Although these drugs have been successful in controlling some of withdrawal symptoms, they have not been able yet to control the symptoms completely, some of them are not available everywhere or are abused in other ways. (5,10). Therefore, herbal medicines can be an excellent option for solving this problem given the high
Traditional Medicine Clinical Trial Research Center of Shahed University, No. 117, Between Avenue of Forsat and Nosrat, North Kargar Avenue, Enghelab Square, Tehran, Iran.
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social acceptance due to the low complications, high effectiveness, their availability and low cost (13). According to the World Health Organization recommendations regarding the use of traditional medicine in health systems (12,14), addiction treatment has been reviewed from the perspective of TIM scientists so that they can play their role in solving this problem. Various therapies for addiction treatment have been introduced in TIM (8). One of these methods is the replacement of opium with natural narcotic drugs (16,2). Several natural narcotic drugs as isolated or in a combination have been introduced in TIM text books (8,16,2,4,15,17,2,3). Hab-o Shefa is a natural combination of drugs which most of TIM scientists have a consensus on the positive effects of this combination in addiction treatment and it has been used for several centuries as a viable alternative for opium in the treatment of opium addiction. This compound contains Datura stramonium, Rheum palmatum, Zingiber officinale and Acacia Arabica (8,16,1,4,15,16). In this study, the efficacy of this drug in controlling morphine withdrawal symptoms was evaluated in rats.
2. Materials and Methods
Habo- Shefa is a natural combination of Datura stramonium, Heum palmatum, Zingiber officinalea and Acacia arabica which was prepared in the pharmaceutical Laboratory of Traditional Medicine of the Shahed University of Tehran (Iran).
Methadone and morphine were purchased in the form of powder from the Daroupakhsh Company.
In this study, 30 male rats of the NMRI strain (Razi Institute of Iran), weighing 250-330 g, were used. These rats were placed in cages quaternary and the temperature was set between 22-25 °C. Ambient light as a 12- hour light 12-hour dark cycle was controlled by a timer. The required amount of water and food was available to each rat. In all the performed experiments the research ethics on animals were fully observed.
2.2. Dependency induction
For creating dependency in animals, morphine at a daily dosage of 10 mg/kg for 8 days was injected i.p. (18).
2.3. Behavioral evaluation
For the study of behavioral dependency after the 8-day morphine injection and 4 to 24 hours after the final injection of morphine to one of the rats in each group, 2.5 mg/kg of naloxone was injected i.p. and the behavioral symptoms were assessed during the following forty minutes. Subsequently, the other rats in each group were also studied one by one. Behavioral indices of withdrawal syndrome including diarrhea, ptosis and teeth chattering are indicative of morphine dependency of such animals. In general, behaviors that occur during the withdrawal syndrome in terms of being countable or non-countable are divided into two categories by the standard agreement; graded signs and chocked signs. Graded signs included jumping, abdominal contraction, wet dog shakes and chocked signs included diarrhea, teeth chattering, salivation, ptosis and genital grooming/ejaculation.
2.4. Experimental groups
In this study, 30 rats were divided into three groups of 10 cases each; the first group named as the control group only received morphine 10 mg/kg daily for 8 days injected i.p.; the methadone group received the same dose of morphine injection plus 25 mg/kg of methadone daily for 8 days by gavage. In the Hab-o Shefa group besides administering the same dose of morphine injection, Hab-o Shefa was prescribed at a dosage of 2000 mg/kg daily for 8 days through gavage.
2.5. Statistical analysis
For data analysis, the graded signs data were
recorded as the number of behaviors occurring in a certain time duration in each rat. After confirming that behaviors of the withdrawal syndrome have a quantitative entity, the number of such behaviors was compared in different groups with ANOVA and Tukey post-hoc test.
Figure 1 shows the number of diarrhea, ptosis and salivation in the three groups. Comparing these numbers between the methadone and Hab-o Shefa groups did not reveal a statistically significant difference (p>0.05), but the difference was significant when comparing these two groups with the placebo group (p0.05).
Figure 2 shows the number of jumps in the three groups. Comparing the number of jumps between Hab-o Shefa and methadone with placebo showed a statistically significant difference (p0.05).
In the previous study by Mohsen Khalili and Mohsen Naseri et al (9), the effectiveness of datura seeds extracts in controlling morphine withdrawal symptoms in rats was studied. In the latter study, the efficacy of datura seeds extract was significantly superior to placebo, whereas no significant difference was seen in comparison with methadone. Hab-o Shefa acted better than datura extract in controlling symptoms such as diarrhea, salivation and ptosis as compared to methadone. Considering that Hab-o Shefa is a natural compound and datura is its main
Figure 1. Comparison of innumerable withdrawal symptoms in rats. As can be seen, the parameters of diarrhea, ptosis and salivation for Hab-o Shefa and methadone groups as compared together was not significant (p>0.05) and between these two and placebo was significant (p
component and the other herbs in this combination act as modifiers of stramonium effects, it can be concluded that natural drug combinations have a better efficacy than natural isolated drugs and also reduce the risk of adverse drug reactions. In addition, in relation to mechanism of action of natural combination drugs, TIM scientists believe that these compounds have their unique properties in general and certain effects cannot be attributed to a specific substance contained in the combination; for example, regarding Hab-o Shefa, the effectiveness of its pharmaceutical composition cannot be attributed to the alkaloids contained in datura plant or to antiserotoninergic substances contained in ginger or the flavonoids contained in Rheum palmatum or the tannin contained in Acacia arabica.
Due to the better efficacy of Hab-o Shefa in comparison to datura extract in controlling morphine withdrawal symptoms, the use of TIM combination drugs could result in lower drug side effects and higher efficacy. In complementary future studies, clinical trials will be performed on the natural combination of Hab-o Shefa in controlling withdrawal symptoms of opioids.
This study was the result of a PhD thesis which is registered under the same title in Shahed University registry system (Number: 118 967 Date: Sep 20, 2011). The authors wish to thank the Department of Traditional Medicine of the Medical School of Shahed University, Department of Traditional Medicine of Medical School of Tehran and Shahid Beheshti Universities for their kind guidance and consultation in better performing this study.