TY - JOUR T1 - Pharmacokinetic and pharmacodynamic herb-drug interaction of Andrographis paniculata (Nees) extract and andrographolide with etoricoxib after oral administration in rats. AU - Balap,Aishwarya, AU - Atre,Bhagyashri, AU - Lohidasan,Sathiyanarayanan, AU - Sinnathambi,Arulmozhi, AU - Mahadik,Kakasaheb, Y1 - 2015/11/17/ PY - 2015/07/09/received PY - 2015/10/05/revised PY - 2015/11/05/accepted PY - 2015/11/24/entrez PY - 2015/11/26/pubmed PY - 2016/12/15/medline KW - Andrographis paniculata extract KW - Andrographolide KW - Andrographolide (Pubchem CID: 5318517) KW - Celecoxib (Pubchem CID: 2662) KW - Etoricoxib KW - Etoricoxib (Pubchem CID: 123619) KW - Herb–drug Interaction KW - Pharmacodynamics KW - Pharmacokinetics SP - 9 EP - 17 JF - Journal of ethnopharmacology JO - J Ethnopharmacol VL - 183 N2 - ETHNOPHARMACOLOGICAL RELEVANCE: Andrographis paniculata Nees (Acanthacae) is commonly used medicinal plant in the traditional. Unani and Ayurvedic medicinal systems. It has broad range of pharmacological effects such as hepatoprotective, antioxidant, antivenom, antifertility, inhibition of replication of the HIV virus, antimalarial, antifungal, antibacterial, antidiabetic, suppression of various cancer cells and anti-inflammatory properties. Andrographolide (AN) is one of the active constituent of the A. paniculata Nees extract (APE). They have been found in many traditional herbal formulations in India and proven to be effective as anti-inflammatory drug AIM OF THE STUDY: To evaluate the pharmacokinetic and pharmacodynamic (anti-arthritic) herb-drug interactions of A. paniculata Nees extract (APE) and pure andrographolide (AN) with etoricoxib (ETO) after oral co-administration in wistar rats. MATERIALS AND METHODS: After oral co-administration of APE (200mg/Kg) and AN (60mg/kg) with ETO (10mg/kg) in rats, drug concentrations in plasma were determined using HPLC method. The main pharmacokinetic parameters of Cmax, tmax, t1/2, MRT, Vd, CL, and AUC were calculated by non-compartment model. Change in paw volume, mechanical nociceptive threshold, mechanical hyperalgesia, histopathology and hematological parameters were evaluated to study antiarthritic activity. RESULTS: Co-administration of ETO with APE and pure AN decreased systemic exposure level of each compound in vivo. The Cmax, AUC, t1/2 of ETO was decreased whereas Vd and CL of ETO was increased significantly after co-administration of ETO with pure AN and APE. In pharmacodynamic study, ETO alone and ETO+APE (10+200mg/kg) groups exhibited significant synergistic anti-arthritic activity as compared to groups ETO+AN, APE and AN alone. CONCLUSION: The results obtained from this study suggested that ETO, APE and pure AN existed pharmacokinetic herb-drug interactions in rat which is correlated with anti-arthritic study. Physicians and patients using A. paniculata should have the knowledge about its possible herb-drug interaction with ETO. SN - 1872-7573 UR - https://www.unboundmedicine.com/medline/citation/26593212/Pharmacokinetic_and_pharmacodynamic_herb_drug_interaction_of_Andrographis_paniculata__Nees__extract_and_andrographolide_with_etoricoxib_after_oral_administration_in_rats_ DB - PRIME DP - Unbound Medicine ER -