AIM: The present study was conducted to investigate the possible mechanism of actions underlying the systemic antinociception activity of the essential oil of Zingiber zerumbet (EOZZ) in chemical-induced nociception tests in mice.
MATERIALS AND METHODS: Acetic acid-induced abdominal constriction, capsaicin-, glutamate- and phorbol 12-myristate 13-acetate-induced paw licking tests in mice were employed in the study. In all experiments, EOZZ was administered systemically at the doses of 50, 100, 200 and 300 mg/kg.
RESULTS: It was shown that EOZZ given to mice via intraperitoneal and oral routes at 50, 100, 200 and 300 mg/kg produced significant dose dependent antinociception when assessed using acetic acid-induced abdominal writing test with calculated mean ID(50) values of 88.84 mg/kg (80.88-97.57 mg/kg) and 118.8 mg/kg (102.5-137.8 mg/kg), respectively. Likewise, intraperitoneal administration of EOZZ at similar doses produced significant dose dependent inhibition of neurogenic pain induced by intraplantar injection of capsaicin (1.6 μg/paw), glutamate (10 μmol/paw) and phorbol 12-myristate 13-acetate (1.6μg/paw) with calculated mean ID(50) of 128.8 mg/kg (118.6-139.9 mg/kg), 124.8 mg/kg (111.4-139.7 mg/kg) and 40.29 (35.39-45.86) mg/kg, respectively. It was also demonstrated that pretreatment with l-arginine (100mg/kg, i.p.), a nitric oxide precursor significantly reversed antinociception produced by EOZZ suggesting the involvement of l-arginine/nitric oxide pathway. In addition, methylene blue (20mg/kg, i.p.) significantly enhanced antinociception produced by EOZZ. Administration of glibenclamide (10mg/kg, i.p.), an ATP-sensitive K(+) channel antagonist significantly reversed antinociceptive activity induced by EOZZ.
CONCLUSION: Together, the present results suggested that EOZZ-induced antinociceptive activity was possibly related to its ability to inhibit glutamatergic system, TRPV1 receptors as well as through activation of l-arginine/nitric oxide/cGMP/protein kinase C/ATP-sensitive K(+) channel pathway.
MATERIALS AND METHODS: A study was conducted to analyze data on the utilization of T&CM services within public hospitals. Secondary data on 822 patients' satisfaction with services offered at 15 T&CM units was analyzed to examine the overall levels of satisfaction with T&CM services in public hospitals in Malaysia.
RESULTS: Overall, 99.4% of patients were satisfied with T&CM services and most patients (91.8%) felt that T&CM treatment positively impacted their health. Overall satisfaction was not affected by lower levels of satisfaction with subcategories of service, such as the number of treatment sessions received (90.7% satisfied), date to the next appointment (90.7% satisfied), and the absence of adverse effects of treatment received (87.1% satisfied). There were no significant associations between the socioeconomic status of the respondents and the level of satisfaction reported; however, respondents with a monthly salary of Ringgit Malaysia (RM) 1000 to RM 3000 were more than twice as likely to be strongly satisfied with services received (adjusted odds ratios [AOR]: 2.12, 95% CI: 1.19-3.78).
CONCLUSION: This study revealed a high level of satisfaction among patients who had received T&CM treatment at public hospitals in Malaysia. High satisfaction with T&CM treatment validates the integrative management approach adopted in patient care within the public hospitals in Malaysia.