Mallaysamy S.,Manipal University India |
Johnson M.G.,University of Groningen |
Bathala L.,Narayana Medical College |
Arumugam K.,Advinus Therapeutics Private Ltd |
And 2 more authors.
European Journal of Clinical Pharmacology
Purpose: The aim of this analysis was to describe the pharmacokinetics of oral lamotrigine (LTG) in Indian epileptic patients using a population pharmacokinetic (PPK) modeling approach to confirm that the PK is similar to that of the Caucasian population, and to evaluate and confirm the impact of covariates predictive of inter-individual variability using a simulation platform. Methods: Blood samples were obtained from 95 patients, and LTG plasma concentrations were determined. Population PK modeling was performed using NONMEM. A one-compartment PK model with first-order absorption and elimination was used to describe the LTG PK. Log-likelihood profiling and normalized prediction distribution errors (NPDE) were used for model evaluation. A simulation study was performed to investigate dose regimens. Results: Clearance (CL) was estimated to be 2.27 L/h with inter-individual variability (IIV) of 29 CV%. Volume of distribution (V) was estimated to be 53.6 L (31 CV% IIV). Body weight and concurrent use of carbamazepine and valproate were identified as significant covariates on clearance. Log-likelihood profiling indicated that parameters could be estimated with adequate precision, and NPDE indicated that the model adequately described the data observed. The simulation study illustrated the impact of carbamazepine and valproate on LTG PK, and negligible differences in PK between Indian and Caucasian patients. Conclusions: This is the first PK analysis of LTG in Indian patients. The population PK model developed adequately described the data observed. Comparison of identified PK parameters with previous PK analyses in Caucasian patients indicates that CL of LTG is similar, while V is somewhat lower compared with Caucasian patients, but this is not expected to lead to relevant differences in PK profiles during steady state. © 2012 Springer-Verlag. Source
ADVINUS THERAPEUTICS PRIVATE Ltd | Date: 2011-09-09
The present disclosure relates to purine compounds of formula (I) or formula (II) or its tautomers, polymorphs, stereoisomers, solvates or a pharmaceutically acceptable salts, or pharmaceutical compositions containing them and methods of treating conditions and diseases that are mediated by thereof as A2B adenosine receptor antagonists. The compounds of the present disclosure are useful in the treatment, prevention or suppression of diseases and disorders that may be susceptible to improvement by the mediation of adenosine A2B receptor. Such conditions include, but are not limited to, asthma, chronic obstructive pulmonary disorder, angiogenesis, pulmonary fibrosis, emphysema, allergic diseases, inflammation, reperfusion injury, myocardial ischemia, atherosclerosis, hypertension, congestive heart failure, retinopathy, diabetes mellitus, obesity, inflammatory gastrointestinal tract disorders including inflammatory bowel disease, sickle cell disease, and/or autoimmune diseases, and to their use in treating mammals for various disease states, such as gastrointestinal disorders, immunological disorders, hypersensitivity disorders, neurological disorders, and cardiovascular diseases due to both cellular hyperproliferation and apoptosis, and the like. The present disclosure also relates to methods for the preparation of such compounds, and to pharmaceutical compositions containing them.
Advinus Therapeutics Private Ltd. | Date: 2006-01-30
Chemicals, biologicals and bio-chemicals for use in the manufacture of all of the following: drugs, agro-chemicals, drugs to be administered by inhalation, gastrointestinal drugs, oral cavity drugs, drugs administered orally, intravenously, intramuscularly, subcutaneously and topically, radio-therapeutic drugs, and therapeutic drugs for use in the fields of genomics, proteomics, chemical sciences, pharmacology, biology, bio-technology, bio-science, and structural biology.
Advinus Therapeutics Private Ltd | Date: 2014-10-10
The present invention discloses substituted fused pyrimidine compounds of formula (I), their tautomers, polymorphs, stereoisomers, solvates, pharmaceutically acceptable salts, or pharmaceutical compositions containing them and methods of treating conditions and diseases that are mediated by adenosine receptor (AR) activity; the compounds of the present invention are useful in the treatment, prevention or suppression of diseases and disorders that may be susceptible to improvement by antagonism of the adenosine receptor, such as asthma, chronic obstructive pulmonary disorder, angiogenesis, pulmonary fibrosis, emphysema, allergic diseases, inflammation, reperfusion injury, myocardial ischemia, atherosclerosis, hypertension, congestive heart failure, retinopathy, diabetes mellitus, obesity, inflammatory gastrointestinal tract disorders, and/or autoimmune diseases.