1
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Inoue T, Maehara S, Maruyama M, Higaki K. Combination of co-amorphization with SNEDDS outperforms Ofev® in the oral absorption of nintedanib. Int J Pharm 2024; 657:124197. [PMID: 38703930 DOI: 10.1016/j.ijpharm.2024.124197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 04/04/2024] [Accepted: 05/01/2024] [Indexed: 05/06/2024]
Abstract
Nintedanib (NTD), approved for the treatment of idiopathic pulmonary fibrosis and advanced non-small cell lung cancer, is one of brick dusts with high melting point. Although NTD has been marketed as Ofev®, a soft capsule of NTD ethanesulfonate (NTD-ESA) suspended in oil components, the oral bioavailability is quite low and highly variable. To improve the oral absorption behavior of NTD, we prepared SNEDDS formulation containing NTD-(+)-10-camphorsulfonic acid (CSA) complex with 2% HPMCP-50. CSA disrupted the high crystallinity of NTD-ESA and the formed complex, NTD-CSA, was found to be amorphous by DSC and XRPD. NTD-CSA provided solubilities in various vehicles much higher than NTD-ESA. Under the gastric luminal condition, NTD-CSA SNEDDS with or without 2% HPMCP-50 and NTD-CSA powder indicated very good dissolution of NTD from early time periods, while NTD was gradually dissolved until around 60 min from NTD-ESA and Ofev®. Under the small intestinal luminal condition, in contrast, both NTD-CSA SNEDDS formulations almost completely dissolved NTD throughout the experiments, while Ofev®, NTD-CSA, and NTD-ESA exhibited a very poor dissolution of NTD. In the in vivo absorption study, NTD-CSA SNEDDS with 2% HPMCP-50 significantly improved NTD absorption and reduced the inter-individual variation in oral absorption behavior compared with Ofev®.
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Affiliation(s)
- Tomoya Inoue
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan; Formulation Research, Biopharmaceutical Research, Pharmaceutical Technology Division, Taiho Pharmaceutical Co., Ltd., 224-2 Ebisuno, Hiraishi, Kawauchi-cho, Tokushima 771-0194, Japan
| | - Seito Maehara
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Masato Maruyama
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Kazutaka Higaki
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.
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2
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Bhardwaj M, Gour A, Ahmed A, Dhiman S, Manhas D, Khajuria P, Wazir P, Mukherjee D, Nandi U. Impact of Disease States on the Oral Pharmacokinetics of EIDD-1931 (an Active Form of Molnupiravir) in Rats for Implication in the Dose Adjustment. Mol Pharm 2023; 20:4597-4610. [PMID: 37527414 DOI: 10.1021/acs.molpharmaceut.3c00314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
The pharmacokinetic alteration of an antimicrobial medication leading to sub-therapeutic plasma level can aid in the emergence of resistance, a global threat nowadays. In this context, molnupiravir (prodrug of EIDD-1931) is the most efficacious orally against corona virus disease (COVID-19). In addition to drug-drug interaction, the pharmacokinetics of a drug can significantly vary during any disease state, leading to disease-drug interaction. However, no information is available for such a recently approved drug. Therefore, we aimed to explore the oral pharmacokinetics of EIDD-1931 in seven chemically induced disease states individually compared to the normal state using various rat models. Induction of any disease situation was confirmed by the disease specific study(s) prior to pharmacokinetic investigations. Compared to the normal state, substantially lowered plasma exposure (0.47- and 0.63-fold) with notably enhanced clearance (2.00- and 1.56-fold) of EIDD-1931 was observed in rats of ethanol-induced gastric injury and carbon tetrachloride-induced liver injury states. Conversely, paclitaxel-induced neuropathic pain and cisplatin-induced kidney injury states exhibited opposite outcomes on oral exposure (1.43- and 1.50-fold) and clearance (0.69- and 0.65-fold) of EIDD-1931. Although the highest plasma concentration (2.26-fold) markedly augmented in the doxorubicin-induced cardiac injury state, streptozocin-induced diabetes and lipopolysaccharide-induced lung injury state did not substantially influence the pharmacokinetics of EIDD-1931. Exploring the possible phenomenon behind the reduced or boosted plasma exposure of EIDD-1931, results suggest the need for dose adjustment in respective diseased conditions in order to achieve desired efficacy during oral therapy of EIDD-1931.
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Affiliation(s)
- Mahir Bhardwaj
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Abhishek Gour
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ajaz Ahmed
- Natural Product and Medicinal Chemistry (NPMC) Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sumit Dhiman
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Diksha Manhas
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Parul Khajuria
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Priya Wazir
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
| | - Debaraj Mukherjee
- Natural Product and Medicinal Chemistry (NPMC) Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Utpal Nandi
- Pharmacology Division, CSIR-Indian Institute of Integrative Medicine, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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3
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Shah H, Shah K, Gajera B, Dave RH, Taft DR. Developing a Formulation Strategy Coupled with PBPK Modeling and Simulation for the Weakly Basic Drug Albendazole. Pharmaceutics 2023; 15:pharmaceutics15041040. [PMID: 37111526 PMCID: PMC10145446 DOI: 10.3390/pharmaceutics15041040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/11/2023] [Accepted: 03/17/2023] [Indexed: 04/29/2023] Open
Abstract
Albendazole (ABZ) is a weakly basic drug that undergoes extensive presystemic metabolism after oral administration and converts to its active form albendazole sulfoxide (ABZ_SO). The absorption of albendazole is limited by poor aqueous solubility, and dissolution is the rate-limiting step in the overall exposure of ABZ_SO. In this study, PBPK modeling was used to identify formulation-specific parameters that impact the oral bioavailability of ABZ_SO. In vitro experiments were carried out to determine pH solubility, precipitation kinetics, particle size distribution, and biorelevant solubility. A transfer experiment was conducted to determine the precipitation kinetics. A PBPK model for ABZ and ABZ_SO was developed using the Simcyp™ Simulator based on parameter estimates from in vitro experiments. Sensitivity analyses were performed to assess the impact of physiological parameters and formulation-related parameters on the systemic exposure of ABZ_SO. Model simulations predicted that increased gastric pH significantly reduced ABZ absorption and, subsequently, ABZ_SO systemic exposure. Reducing the particle size below 50 µm did not improve the bioavailability of ABZ. Modeling results illustrated that systemic exposure of ABZ_SO was enhanced by increasing solubility or supersaturation and decreasing the drug precipitation of ABZ at the intestinal pH level. These results were used to identify potential formulation strategies to enhance the oral bioavailability of ABZ_SO.
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Affiliation(s)
- Harsh Shah
- Invagen, A Cipla Subsidiary, Hauppauge, NY 11788, USA
| | - Kushal Shah
- Takeda Pharmaceuticals International Inc., Cambridge, MA 02139, USA
| | | | - Rutesh H Dave
- Division of Pharmaceutical Sciences, Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, NY 11201, USA
| | - David R Taft
- Samuel J. and Joan B. Williamson Institute for Pharmacometrics, Division of Pharmaceutical Sciences, Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, NY 11201, USA
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4
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Sethi S, Rana V. In silico-assisted development of supersaturable preconcentrated isotropic mixture of atazanavir for augmenting biopharmaceutical performance in the presence of H2-receptor antagonist. Drug Deliv Transl Res 2023; 13:339-355. [PMID: 35922589 DOI: 10.1007/s13346-022-01210-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2022] [Indexed: 12/13/2022]
Abstract
The therapeutic potential of atazanavir (BCS Class II drug), a highly selective inhibitor of human immunodeficiency virus (HIV-1), has been largely limited due to its low intrinsic solubility at elevated pH resulting in low oral bioavailability. Thus, the current work describes the systematic development, optimization, and evaluation of hydroxypropyl methylcellulose acetate succinate (HPMC-AS)-based supersaturable preconcentrate isotropic mixture (SP-IM) containing long-chain triglyceride to improve intestinal lymphatic transport and augment oral bioavailability of atazanavir (ATZ). A D-optimal mixture design was employed for optimization of plain IM containing corn oil, oleic acid, Tween 80, and propylene glycol, evaluating various critical quality attributes (CQAs) like particle size, polydispersity index, self-emulsification time, % transmittance, and drug content. In silico analysis and in vitro supersaturation test facilitated the selection of HPMC-AS as a best suited polymeric precipitation inhibitor (PPI) for formulating ATZ loaded SP-IM (ATZ-SP-IM). In vitro dissolution data indicated that ATZ-SP-IM exhibits superior performance in 0.025 N HCl and pH 6.8 over pure drug. Ex vivo permeation and in vivo pharmacokinetic study of ATZ-SP-IM corroborated enhanced permeation (2.03 fold) and improved drug absorption via lymphatic transport in Wistar rats. Further, the pharmacokinetic performance of ATZ-SP-IM was not affected in presence of H2 receptor antagonist. Therefore, the results showed that ATZ-SP-IM can significantly improve the biopharmaceutical attributes of ATZ so as to lay a foundation of further research on the new dosage form of ATZ.
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Affiliation(s)
- Sheshank Sethi
- Pharmaceutics Division, Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, 147002, India
| | - Vikas Rana
- Pharmaceutics Division, Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, 147002, India.
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5
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Shugg T, Powell NR, Marroum PJ, Skaar TC, Younis IR. Evaluation of US Food and Drug Administration Drug Label Recommendations for Coadministration of Antivirals and Acid-Reducing Agents. Clin Pharmacol Ther 2022; 112:1088-1097. [PMID: 35920069 PMCID: PMC10080725 DOI: 10.1002/cpt.2723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 07/29/2022] [Indexed: 11/11/2022]
Abstract
Coadministration with acid-reducing agents (ARAs), including proton pump inhibitors (PPIs), histamine H2 -receptor antagonists (H2 blockers), and antacids has been demonstrated to reduce antiviral exposure and efficacy. Therefore, it is essential that US Food and Drug Administration (FDA) drug labels include recommendations to manage these drug-drug interactions (DDIs). This investigation analyzed information in FDA drug labels to manage DDIs between ARAs and antivirals approved from 1998 to 2019. To ascertain clinical adoption, we assessed whether FDA label recommendations were incorporated into current antiviral clinical practice guidelines. We identified 82 label recommendations for 43 antiviral approvals. Overall, 56.1% of recommendations were deemed clinically actionable, with the most common actionable management strategies being dose adjustment during coadministration (40.2%) and coadministration not recommended (9.8%). The sources informing DDI recommendations were clinical DDI studies (59.8%) and predictions of altered exposure (40.2%). Antivirals with low aqueous solubility were more likely to have label recommendations and were more commonly investigated using clinical DDI studies (P < 0.01). For recommendations informed by clinical DDI studies, changes in drug exposure were associated with actionable label recommendations (P < 0.01). The frequency of exposure changes in clinical DDI studies was similar across antiviral indications, but exposure changes were numerically higher for antacids (71.4%) relative to PPIs (42.9%) and H2 blockers (28.6%). Of DDI pairs identified within drug labels, 76.8% were included in guidelines, and recommended management strategies were concordant in 90.5% of cases. Our findings demonstrate that current regulatory oversight mostly (but not completely) results in actionable label recommendations to manage DDIs for high-risk antivirals.
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Affiliation(s)
- Tyler Shugg
- Division of Clinical Pharmacology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Nicholas R. Powell
- Division of Clinical Pharmacology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Patrick J. Marroum
- Clinical Pharmacology and Pharmacometrics, AbbVie Inc, North Chicago, Illinois, USA
| | - Todd C. Skaar
- Division of Clinical Pharmacology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Islam R. Younis
- Department of Clinical Pharmacology, Gilead Sciences Inc., Foster City, California, USA
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6
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Sethi S, Rana V. Atazanavir-Concentrate Loaded Soft Gelatin Capsule for Enhanced Concentration in Plasma, Brain, Spleen, and Lymphatics. AAPS PharmSciTech 2022; 23:270. [PMID: 36171353 DOI: 10.1208/s12249-022-02428-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 09/15/2022] [Indexed: 11/30/2022] Open
Abstract
This study investigates the development of atazanavir-concentrate loaded soft gelatin capsule for achieving enhanced atazanavir (ATV) concentration in plasma, brain, spleen, and lymphatics beneficial in the significant reduction of viral load in HIV infection. For this purpose, ATV-concentrate in the presence and absence of Soluplus with corn oil, oleic acid, tween 80, and propylene glycol was developed. The developed ATV-concentrate was found to have enhanced dispersibility with no signs of precipitation after dilution with simulated G.I fluid as evident from particle size (16.49±0.32 nm) and PDI (0.217±0.02) analysis. The rheological and molecular docking studies explainedthe reduction of viscosity of SuATV-C due to the intermolecular H-bond between ATV and Soluplus that helps to retard crystallization. The shell of the soft gelatin capsule retains its integrity when subjected to a folding endurance test on a texture analyzer depicting that the concentrate did not affect the integrity of the soft gelatin capsule shell. An ex vivo and in vivo pharmacokinetic study in rats revealed that the SuATV-C soft gelatin capsule (SuATV-C SGC) indicated 2.9 fold improvement in rate and extent of permeation and absorption than that of ATV-suspension. The tissue distribution study also exhibited higher drug concentration in the brain (2.5 fold), lymph nodes (2.7 fold), and spleen (1.2 fold) administered with SuATV-C SGC, revealing the overwhelming influence of Soluplus and corn oil. In a nutshell, these studies demonstrated that SuATV-C SGC seems to have the potential to deliver an anti-retroviral drug to the viral sanctuaries for the better management of HIV.
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Affiliation(s)
- Sheshank Sethi
- Pharmaceutics Division, Department of Pharmaceutical Sciences & Drug Research, Punjabi University, Patiala, 147002, India
| | - Vikas Rana
- Pharmaceutics Division, Department of Pharmaceutical Sciences & Drug Research, Punjabi University, Patiala, 147002, India.
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7
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Scherf-Clavel O. Drug-Drug Interactions With Over-The-Counter Medicines: Mind the Unprescribed. Ther Drug Monit 2022; 44:253-274. [PMID: 34469416 DOI: 10.1097/ftd.0000000000000924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/21/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND This review provides a summary of the currently available clinical data on drug-drug interactions (DDIs) involving over-the-counter (OTC) medicines. It aims to educate and increase awareness among health care providers and to support decisions in daily practice. METHODS An extensive literature search was performed using bibliographic databases available through PubMed.gov. An initial structured search was performed using the keywords "drug-drug-interaction AND (over-the-counter OR OTC)," without further restrictions except for the language. The initial results were screened for all described DDIs involving OTC drugs, and further information was gathered specifically on these drugs using dedicated database searches and references found in the bibliography from the initial hits. RESULTS From more than 1200 initial hits (1972-June 2021), 408 relevant publications were screened for DDIs involving OTC drugs, leading to 2 major findings: first, certain types of drug regimens are more prone to DDIs or have more serious DDI-related consequences, such as antiretroviral, anti-infective, and oral anticancer therapies. Second, although most DDIs involve OTC drugs as the perpetrators, some prescription drugs (statins or phosphodiesterase-5 inhibitors) that currently have OTC status can be identified as the victims in DDIs. The following groups were identified to be frequently involved in DDIs: nonsteroidal anti-inflammatory drugs, food supplements, antacids, proton-pump inhibitors, H2 antihistamines, laxatives, antidiarrheal drugs, and herbal drugs. CONCLUSIONS The most significant finding was the lack of high-quality evidence for commonly acknowledged interactions. High-quality interaction studies involving different phenotypes in drug metabolism (cytochrome P450) and distribution (transporters) are urgently needed. This should include modern and critical drugs, such as oral anticancer medications and direct oral anticoagulants.
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Affiliation(s)
- Oliver Scherf-Clavel
- Institute for Pharmacy and Food Chemistry, University of Würzburg, Würzburg, Germany
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8
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Gaohua L, Miao X, Dou L. Crosstalk of physiological pH and chemical pKa under the umbrella of physiologically based pharmacokinetic modeling of drug absorption, distribution, metabolism, excretion, and toxicity. Expert Opin Drug Metab Toxicol 2021; 17:1103-1124. [PMID: 34253134 DOI: 10.1080/17425255.2021.1951223] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Introduction: Physiological pH and chemical pKa are two sides of the same coin in defining the ionization of a drug in the human body. The Henderson-Hasselbalch equation and pH-partition hypothesis form the theoretical base to define the impact of pH-pKa crosstalk on drug ionization and thence its absorption, distribution, metabolism, excretion, and toxicity (ADMET).Areas covered: Human physiological pH is not constant, but a diverse, dynamic state regulated by various biological mechanisms, while the chemical pKa is generally a constant defining the acidic dissociation of the drug at various environmental pH. Works on pH-pKa crosstalk are scattered in the literature, despite its significant contributions to drug pharmacokinetics, pharmacodynamics, safety, and toxicity. In particular, its impacts on drug ADMET have not been effectively linked to the physiologically based pharmacokinetic (PBPK) modeling and simulation, a powerful tool increasingly used in model-informed drug development (MIDD).Expert opinion: Lacking a full consideration of the interactions of physiological pH and chemical pKa in a PBPK model limits scientists' capability in mechanistically describing the drug ADMET. This mini-review compiled literature knowledge on pH-pKa crosstalk and its impacts on drug ADMET, from the viewpoint of PBPK modeling, to pave the way to a systematic incorporation of pH-pKa crosstalk into PBPK modeling and simulation.
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Affiliation(s)
- Lu Gaohua
- Research & Early Development, Princeton, New Jersey, USA
| | - Xiusheng Miao
- Drug Metabolism and Pharmacokinetics, GlaxoSmithKline, Collegeville, Pennsylvania, USA
| | - Liu Dou
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou, Guangdong, China
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9
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Kataoka M, Nakanishi R, Umesaki M, Kobayashi M, Minami K, Higashino H, Yamaguchi S, Yamashita S. An enteric polymer mitigates the effects of gastric pH on oral absorption of poorly soluble weak acid drugs from supersaturable formulations: A case study with dantrolene. Eur J Pharm Biopharm 2020; 155:29-36. [DOI: 10.1016/j.ejpb.2020.07.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 07/21/2020] [Accepted: 07/27/2020] [Indexed: 10/23/2022]
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10
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Parrott N, Stillhart C, Lindenberg M, Wagner B, Kowalski K, Guerini E, Djebli N, Meneses-Lorente G. Physiologically Based Absorption Modelling to Explore the Impact of Food and Gastric pH Changes on the Pharmacokinetics of Entrectinib. AAPS JOURNAL 2020; 22:78. [PMID: 32458089 DOI: 10.1208/s12248-020-00463-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 04/29/2020] [Indexed: 02/07/2023]
Abstract
Entrectinib is a potent and selective tyrosine kinase inhibitor (TKI) of TRKA/B/C, ROS1, and ALK with both systemic and CNS activities, which has recently received FDA approval for ROS1 fusion-positive non-small cell lung cancer and NTRK fusion-positive solid tumors. This paper describes the application of a physiologically based biophamaceutics modeling (PBBM) during clinical development to understand the impact of food and gastric pH changes on absorption of this lipophilic, basic, molecule with reasonable permeability but strongly pH-dependent solubility. GastroPlus™ was used to develop a physiologically based pharmacokinetics (PBPK) model integrating in vitro and in silico data and dissolution studies and in silico modelling in DDDPlus™ were used to understand the role of self-buffering and acidulant on formulation performance. Models were verified by comparison of simulated pharmacokinetics for acidulant and non-acidulant containing formulations to clinical data from a food effect study and relative bioavailability studies with and without the gastric acid-reducing agent lansoprazole. A negligible food effect and minor pH-dependent drug-drug interaction for the market formulation were predicted based on biorelevant in vitro measurements, dissolution studies, and in silico modelling and were confirmed in clinical studies. These outcomes were explained as due to the acidulant counteracting entrectinib self-buffering and greatly reducing the effect of gastric pH changes. Finally, sensitivity analyses with the verified model were applied to support drug product quality. PBBM has great potential to streamline late-stage drug development and may have impact on regulatory questions.
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Affiliation(s)
- Neil Parrott
- Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, Grenzacherstrasse 124, 4070, Basel, Switzerland.
| | - Cordula Stillhart
- Pharmaceutical Research & Development, Formulation & Process Sciences, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Marc Lindenberg
- Pharmaceutical Research & Development, Analytical, F. Hoffmann-La Roche Ltd, Basel, Switzerland
| | - Bjoern Wagner
- Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, Grenzacherstrasse 124, 4070, Basel, Switzerland
| | | | - Elena Guerini
- Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, Grenzacherstrasse 124, 4070, Basel, Switzerland
| | - Nassim Djebli
- Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, Grenzacherstrasse 124, 4070, Basel, Switzerland
| | - Georgina Meneses-Lorente
- Pharmaceutical Sciences, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, Grenzacherstrasse 124, 4070, Basel, Switzerland
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11
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Abstract
A substantial volume of literature exists linking proton pump inhibitor (PPI) use with a multitude of serious adverse events. There is uncertainty, however, over whether these associations are clinically important. Excessive concern about PPI-related adverse events may leave patients at risk of harm by leaving acid-related upper gastrointestinal disease untreated. Conversely, the risk of treatments may outweigh the benefits if any of the purported adverse events are directly caused by PPI use; this is of particular concern where indications for PPI use are not present. In this paper, we review the studies which have reported associations between adverse events and PPI use, discuss the proposed mechanisms of action, grade the confidence in whether these associations are truly causal, and provide advice regarding balancing the benefits of PPI use against their possible harms.
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Affiliation(s)
- Evan Elias
- Section of Gastroenterology, Department of Internal Medicine, Rady School of Medicine, University of Manitoba, 805G-715 McDermot Avenue, Winnipeg, MB, R3E 3P4, Canada
| | - Laura E Targownik
- Section of Gastroenterology, Department of Internal Medicine, Rady School of Medicine, University of Manitoba, 805G-715 McDermot Avenue, Winnipeg, MB, R3E 3P4, Canada.
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12
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Basilua JM, Sawoo O, Mangin I, Dossou-Yovo F, Boussard A, Chevillard L, Lutete GT, Eto B, Peytavin G, Pochart P. Higher Atazanavir Plasma Exposure in Rats is Associated with Gut Microbiota Changes Induced by Cotrimoxazole. Curr Drug Metab 2019; 20:898-906. [PMID: 31702484 DOI: 10.2174/1389200220666191023105609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 10/02/2019] [Accepted: 10/16/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Cotrimoxazole (TMP-SMX) is concomitantly used as a primary prophylaxis of opportunistic infections with antiretroviral agents, such as Atazanavir (ATV). Results from an ex vivo study showed changes in intestinal absorption of ATV when rats were pretreated with TMP-SMX. The objective of this in vivo study is to determine the effect of TMP-SMX on the pharmacokinetics of ATV in rats. We also studied changes in gut microbiota induced by TMP-SMX. METHODS We used the non-compartment analysis to compare the pharmacokinetics of ATV in a parallel group of rats treated with a low or therapeutic dose of TMP-SMX for nine days to untreated control rats. Gut microbiota was characterized using qPCR and High Throughput Sequencing of 16S rDNA. RESULTS Rats treated with TMP-SMX showed a much broader exposure to ATV compared to the control group (AUC0-8h (ng.mL-1.h), 25975.9±4048.7 versus 2587.6±546.9, p=0.001). The main observation regarding the gut microbiota was a lower proportion of enterobacteria related to the administration of TMP-SMX. Moreover, the Total Gastrointestinal Transit Time (TGTT) was longer in the TMP-SMX treated group. CONCLUSION Concomitant administration of TMP-SMX and ATV significantly increased ATV exposure in rats. This increase could be the result of a prolonged TGTT leading to an increase in the intestinal residence time of ATV favoring its absorption. Gut microbiota changes induced by TMP-SMX could be at the origin of this prolonged TGTT. If demonstrated in humans, this potential interaction could be accompanied by an increase in the adverse effects of ATV.
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Affiliation(s)
- Joe Miantezila Basilua
- EA4065 Intestinal Ecosystem, Probiotics, Antibiotics, Paris Descartes University SPC, Paris, France.,Clinical Pharmacology Unit, University of Kinshasa, Kinshasa, Democratic Republic of Congo
| | - Olivier Sawoo
- EA4065 Intestinal Ecosystem, Probiotics, Antibiotics, Paris Descartes University SPC, Paris, France.,Microbial Ecology Laboratory (MIEL), CNAM, F-75003 Paris, France
| | - Irène Mangin
- EA4065 Intestinal Ecosystem, Probiotics, Antibiotics, Paris Descartes University SPC, Paris, France.,Microbial Ecology Laboratory (MIEL), CNAM, F-75003 Paris, France
| | - Flore Dossou-Yovo
- EA4065 Intestinal Ecosystem, Probiotics, Antibiotics, Paris Descartes University SPC, Paris, France.,Microbial Ecology Laboratory (MIEL), CNAM, F-75003 Paris, France
| | - Aline Boussard
- UMR 1145 Food Process Engineering, AgroParisTech, INRA, Paris-Saclay University, Massy 91300, France.,CNAM, UMR1145 Food Process Engineering, Paris F-75003, France
| | - Lucie Chevillard
- UMR-S 1144 Therapeutic Optimization in Neuropsychopharmacology, Paris Descartes University, Paris, France
| | - Gaston T Lutete
- Clinical Pharmacology Unit, University of Kinshasa, Kinshasa, Congo
| | | | - Gilles Peytavin
- IAME, UMR 1137, INSERM, Paris Diderot University, Sorbonne Paris Cité, Paris, France.,Pharmaco-Toxicology Laboratory, Bichat Hospital, Paris, France
| | - Philippe Pochart
- EA4065 Intestinal Ecosystem, Probiotics, Antibiotics, Paris Descartes University SPC, Paris, France.,Microbial Ecology Laboratory (MIEL), CNAM, F-75003 Paris, France
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Properly prescribed, proton pump inhibitors are largely safe, but precautions are needed to prevent potential problems, overuse and misuse. DRUGS & THERAPY PERSPECTIVES 2019. [DOI: 10.1007/s40267-019-00671-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Gong Y, Chowdhury P, Nagesh PKB, Cory TJ, Dezfuli C, Kodidela S, Singh A, Yallapu MM, Kumar S. Nanotechnology approaches for delivery of cytochrome P450 substrates in HIV treatment. Expert Opin Drug Deliv 2019; 16:869-882. [PMID: 31328582 DOI: 10.1080/17425247.2019.1646725] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Introduction: Antiretroviral therapy (ART) has led to a significant reduction in HIV-1 morbidity and mortality. Many antiretroviral drugs (ARVs) are metabolized by cytochrome P450 (CYP) pathway, and the majority of these drugs are also either CYP inhibitors or inducers and few possess both activities. These CYP substrates, when used for HIV treatment in the conventional dosage form, have limitations such as low systemic bioavailability, potential drug-drug interactions, and short half-lives. Thus, an alternative mode of delivery is needed in contrast to conventional ARVs. Areas covered: In this review, we summarized the limitations of conventional ARVs in HIV treatment, especially for ARVs which are CYP substrates. We also discussed the preclinical and clinical studies using the nanotechnology strategy to overcome the limitations of these CYP substrates. The preclinical studies and clinical studies published from 2000 to February 2019 were discussed. Expert opinion: Since preclinical and clinical studies for prevention and treatment of HIV using nanotechnology approaches have shown considerable promise in recent years, nanotechnology could become an alternative strategy for daily oral therapy as a future treatment.
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Affiliation(s)
- Yuqing Gong
- a Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , Memphis , TN , USA
| | - Pallabita Chowdhury
- a Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , Memphis , TN , USA
| | - Prashanth K B Nagesh
- a Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , Memphis , TN , USA
| | - Theodore J Cory
- b Department of Clinical Pharmacy and Translational Science, College of Pharmacy, University of Tennessee Health Science Center , Memphis , TN , USA
| | - Chelsea Dezfuli
- b Department of Clinical Pharmacy and Translational Science, College of Pharmacy, University of Tennessee Health Science Center , Memphis , TN , USA
| | - Sunitha Kodidela
- a Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , Memphis , TN , USA
| | - Ajay Singh
- a Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , Memphis , TN , USA
| | - Murali M Yallapu
- a Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , Memphis , TN , USA
| | - Santosh Kumar
- a Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , Memphis , TN , USA
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Litou C, Effinger A, Kostewicz ES, Box KJ, Fotaki N, Dressman JB. Effects of medicines used to treat gastrointestinal diseases on the pharmacokinetics of coadministered drugs: a PEARRL Review. J Pharm Pharmacol 2018; 71:643-673. [DOI: 10.1111/jphp.12983] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 06/27/2018] [Indexed: 12/16/2022]
Abstract
Abstract
Objectives
Drugs used to treat gastrointestinal diseases (GI drugs) are widely used either as prescription or over-the-counter (OTC) medications and belong to both the 10 most prescribed and 10 most sold OTC medications worldwide. The objective of this review article is to discuss the most frequent interactions between GI and other drugs, including identification of the mechanisms behind these interactions, where possible.
Key findings
Current clinical practice shows that in many cases, these drugs are administered concomitantly with other drug products. Due to their metabolic properties and mechanisms of action, the drugs used to treat gastrointestinal diseases can change the pharmacokinetics of some coadministered drugs. In certain cases, these interactions can lead to failure of treatment or to the occurrence of serious adverse events. The mechanism of interaction depends highly on drug properties and differs among therapeutic categories. Understanding these interactions is essential to providing recommendations for optimal drug therapy.
Summary
Interactions with GI drugs are numerous and can be highly significant clinically in some cases. While alterations in bioavailability due to changes in solubility, dissolution rate, GI transit and metabolic interactions can be (for the most part) easily identified, interactions that are mediated through other mechanisms, such as permeability or microbiota, are less well-understood. Future work should focus on characterising these aspects.
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Affiliation(s)
- Chara Litou
- Institute of Pharmaceutical Technology, Goethe University, Frankfurt am Main, Germany
| | - Angela Effinger
- Department of Pharmacy and Pharmacology, Faculty of Science, University of Bath, Bath, UK
| | - Edmund S Kostewicz
- Institute of Pharmaceutical Technology, Goethe University, Frankfurt am Main, Germany
| | - Karl J Box
- Pion Inc. (UK) Ltd., Forest Row, East Sussex, UK
| | - Nikoletta Fotaki
- Department of Pharmacy and Pharmacology, Faculty of Science, University of Bath, Bath, UK
| | - Jennifer B Dressman
- Institute of Pharmaceutical Technology, Goethe University, Frankfurt am Main, Germany
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Fulco PP, Vora UB, Bearman GML. Acid Suppressive Therapy and the Effects on Protease Inhibitors. Ann Pharmacother 2016; 40:1974-83. [PMID: 17077173 DOI: 10.1345/aph.1h022] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Objective: To review the literature associated with the pharmacokinetic interaction between protease inhibitors (Pls) and acid suppressive therapies and to characterize the impact of this interaction on virologic and immunologic outcomes. Data Sources: A MEDLINE search (1966–October 2006) was conducted using the names of the 10 Pls and specific acid suppressive therapies including antacids, histamine2-receptor antagonists, and proton pump inhibitors. Abstracts and poster presentations from recent HIV/AIDS meetings were reviewed for relevance. References from retrieved articles, as well as product packaging and manufacturer information, were evaluated. Study Selection and Data Extraction: Pertinent pharmacokinetic, immunologic, and virologic studies, in healthy and HIV-infected patients, evaluating the use of a PI and acid suppressive therapy were reviewed. Data Synthesis: Potential interactions between concomitant acid suppressive therapy and Pls were evaluated. Available information indicates that indinavir and atazanavir require an acidic gastric medium for adequate absorption. Indinavir pharmacokinetic parameters are variable with acid suppressive therapy but primarily result in decreased oral absorption. This interaction abates with concurrent ritonavir use. No immunologic or virologic data are available regarding the concomitant use of indinavir and acid suppressive therapy. The minimum concentration of atazanavir, area under the concentration-time curve, and maximum concentration are significantly reduced when used concurrently with acid suppressive therapy. Atazanavir 300 or 400 mg boosted with ritonavir 100 mg increases plasma concentrations when used with acid suppressive drugs. Virologic and immunologic outcomes appear stable when boosted atazanavir is used in HIV-positive patients. Atazanavir therapeutic monitoring should be considered when used in combination with acid suppressive therapy. Conclusions: Of the Pls reviewed, significant pharmacokinetic interactions exist between acid suppressive therapy and indinavir or atazanavir. These Pls should be used with low-dose ritonavir if acid suppressive therapy is necessary.
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Affiliation(s)
- Patricia Pecora Fulco
- Division of Infectious Diseases, Virginia Commonwealth University Medical Center, 401 N. 12th St., PO Box 980042, Richmond, VA 23298-0042, USA.
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Malhi V, Colburn D, Williams SJ, Hop CECA, Dresser MJ, Chandra P, Graham RA. A clinical drug-drug interaction study to evaluate the effect of a proton-pump inhibitor, a combined P-glycoprotein/cytochrome 450 enzyme (CYP)3A4 inhibitor, and a CYP2C9 inhibitor on the pharmacokinetics of vismodegib. Cancer Chemother Pharmacol 2016; 78:41-9. [PMID: 27154174 PMCID: PMC4921109 DOI: 10.1007/s00280-016-3020-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 03/24/2016] [Indexed: 11/26/2022]
Abstract
PURPOSE The Hedgehog pathway inhibitor vismodegib exhibits pH-dependent solubility, and in vitro studies have shown that vismodegib is a substrate of P-glycoprotein (P-gp) and is metabolized by cytochrome P450 (CYP) 2C9 and 3A4. The objective of this four-arm parallel study in healthy subjects was to evaluate the effect of the proton-pump inhibitor rabeprazole, the P-gp/CYP3A4 inhibitor itraconazole, and the CYP2C9 and 3A4 inhibitor fluconazole on vismodegib steady-state pharmacokinetics. METHODS Cohorts included a control arm (n = 22), in which vismodegib 150 mg was administered once daily (QD) for 7 days, and 3 arms in which vismodegib was co-administered QD for 7 days with rabeprazole 20 mg (including a 4-day lead-in; n = 24); itraconazole 200 mg (n = 22); or fluconazole 400 mg (n = 22). RESULTS Area under the vismodegib concentration-time curve from zero to 24 h (AUC0-24h) at steady state was lower with concomitant rabeprazole administration relative to vismodegib alone [geometric mean ratio (GMR), 86.2 (associated 90 % confidence interval [CI], 76.1, 97.7)]. There was no effect of itraconazole on steady-state exposure of vismodegib [GMR, 96.4 (90 % CI 84.9, 109.6)]. Co-administration with fluconazole increased vismodegib steady-state AUC0-24h [GMR, 130.9 (90 % CI 115.2, 148.7)]. Co-administration of rabeprazole, itraconazole, and fluconazole had similar effects on the exposure of unbound vismodegib and total vismodegib. CONCLUSION The results of this study suggest that vismodegib can be administered with acid-reducing agents and P-gp and CYP inhibitors without the risk of a clinically meaningful pharmacokinetic drug-drug interaction. CLINICALTRIALS. GOV IDENTIFIER NCT01772290.
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Affiliation(s)
- Vikram Malhi
- Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA.
| | - Dawn Colburn
- Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
| | | | | | - Mark J Dresser
- Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
- Denali Therapeutics, South San Francisco, CA, USA
| | - Priya Chandra
- Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Richard A Graham
- Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
- Theravance Biopharma, South San Francisco, CA, USA
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Yucel E, Sancar M, Yucel A, Okuyan B. Adverse drug reactions due to drug–drug interactions with proton pump inhibitors: assessment of systematic reviews with AMSTAR method. Expert Opin Drug Saf 2016; 15:223-36. [DOI: 10.1517/14740338.2016.1128413] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Emre Yucel
- Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, Houston, TX, USA
| | - Mesut Sancar
- Marmara University, Clinical Pharmacy, Faculty of Pharmacy, Istanbul, Turkey
| | - Aylin Yucel
- University of Houston, College of Pharmacy, Science & Research Bldg. 2 Co Science & Research Bldg. 2 College of Pharmacy Science & Research Bldg. 2 College of Pharmacy 3455 Cullen Blvd., Houston, TX, USA
| | - Betul Okuyan
- Marmara University, Clinical Pharmacy, Faculty of Pharmacy, Istanbul, Turkey
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Stolbach A, Paziana K, Heverling H, Pham P. A Review of the Toxicity of HIV Medications II: Interactions with Drugs and Complementary and Alternative Medicine Products. J Med Toxicol 2015; 11:326-41. [PMID: 26036354 PMCID: PMC4547966 DOI: 10.1007/s13181-015-0465-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
For many patients today, HIV has become a chronic disease. For those patients who have access to and adhere to lifelong antiretroviral (ARV) therapy, the potential for drug-drug interactions has become a real and life-threatening concern. It is known that most ARV drug interactions occur through the cytochrome P450 (CYP) pathway. Medications for comorbid medical conditions, holistic supplements, and illicit drugs can be affected by CYP inhibitors and inducers and have the potential to cause harm and toxicity. Protease inhibitors (PIs) tend to inhibit CYP3A4, while most non-nucleoside reverse transcriptase inhibitors (NNRTIs) tend to induce the enzyme. As such, failure to adjust the dose of co-administered medications, such as statins and steroids, may lead to serious complications including rhabdomyolysis and hypercortisolism, respectively. Similarly, gastric acid blockers can decrease several ARV absorption, and warfarin doses may need to be adjusted to maintain therapeutic concentrations. Illicit drugs such as methylenedioxymethamphetamine (MDMA, "ecstasy") in combination with PIs lead to increased toxicity, while the concomitant administration of sedative drugs such as midazolam and alprazolam in patients taking PIs can result in prolonged sedation, delayed recovery, and increased length of stay. Even supplements like St. John's Wort can alter PI concentrations. In theory, any drug that is metabolized by CYP has potential for a pharmacokinetic drug-drug interaction with all PIs, cobicistat, and most NNRTIs. When adding a new medication to an ARV regimen, use of a drug-drug interaction software and/or consultation with a clinical pharmacist/pharmacologist or HIV specialist is recommended.
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Affiliation(s)
- Andrew Stolbach
- />Department of Emergency Medicine, Johns Hopkins Department of Emergency Medicine, Johns Hopkins University School of Medicine, 1830 East Monument Street, Suite 6-100, Baltimore, MD 21287 USA
| | - Karolina Paziana
- />Department of Emergency Medicine, Johns Hopkins Department of Emergency Medicine, Johns Hopkins University School of Medicine, 1830 East Monument Street, Suite 6-100, Baltimore, MD 21287 USA
| | - Harry Heverling
- />Department of Emergency Medicine, Johns Hopkins Department of Emergency Medicine, Johns Hopkins University School of Medicine, 1830 East Monument Street, Suite 6-100, Baltimore, MD 21287 USA
| | - Paul Pham
- />Division of Infectious Diseases, Johns Hopkins University School of Medicine, 1830 East Monument Street, 4th floor, Baltimore, MD 21205 USA
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Prediction of pH dependent absorption using in vitro, in silico, and in vivo rat models: Early liability assessment during lead optimization. Eur J Pharm Sci 2015; 76:173-80. [DOI: 10.1016/j.ejps.2015.05.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 04/27/2015] [Accepted: 05/07/2015] [Indexed: 12/20/2022]
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Narasimhan NI, Dorer DJ, Davis J, Turner CD, Sonnichsen D. Evaluation of the effect of multiple doses of lansoprazole on the pharmacokinetics and safety of ponatinib in healthy subjects. Clin Drug Investig 2015; 34:723-9. [PMID: 25145453 DOI: 10.1007/s40261-014-0225-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND In vitro studies have demonstrated that the aqueous solubility of the tyrosine kinase inhibitor ponatinib decreases as pH increases. OBJECTIVES The primary aim of this study was to assess the effects of the gastric proton pump inhibitor lansoprazole on the pharmacokinetics of ponatinib. The single-dose safety profile of ponatinib with and without coadministration of lansoprazole was also characterized. METHODS This was a phase I, open-label, non-randomized, two-period crossover study in 20 healthy subjects aged 18-55 years. Subjects received a single oral dose of ponatinib 45 mg alone on day 1, an oral dose of lansoprazole 60 mg on day 14, and ponatinib 45 mg plus lansoprazole 60 mg on day 15. RESULTS Lansoprazole coadministration resulted in a 1-h increase in the time to maximum plasma concentration (t max) of ponatinib (6 vs. 5 h post-dose; P < 0.001). A corresponding 25 % decrease in the geometric mean maximum plasma concentration (C max) of ponatinib was observed for ponatinib + lansoprazole versus ponatinib alone (40.67 vs. 53.96 ng/mL). Importantly, lansoprazole did not decrease the overall ponatinib systemic exposure as assessed by the ponatinib area under the plasma concentration-time curve from time zero to infinity (AUC∞ 1,153 ng·h/mL for lansoprazole + ponatinib vs. 1,222 ng·h/mL for ponatinib alone). The safety profile was considered acceptable when ponatinib was administered alone or with lansoprazole. CONCLUSIONS Although coadministration of lansoprazole led to a modest, albeit statistically significant, reduction in ponatinib C max, overall systemic exposure to ponatinib did not change. The findings suggest that no dose adjustment is necessary when ponatinib is administered with drugs that increase gastric pH.
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Abstract
Proton pump inhibitors (PPIs) are used extensively for the treatment of gastric acid-related disorders, often over the long term, which raises the potential for clinically significant drug interactions in patients receiving concomitant medications. These drug–drug interactions have been previously reviewed. However, the current knowledge is likely to have advanced, so a thorough review of the literature published since 2006 was conducted. This identified new studies of drug interactions that are modulated by gastric pH. These studies showed the effect of a PPI-induced increase in intragastric pH on mycophenolate mofetil pharmacokinetics, which were characterised by a decrease in the maximum exposure and availability of mycophenolic acid, at least at early time points. Post-2006 data were also available outlining the altered pharmacokinetics of protease inhibitors with concomitant PPI exposure. New data for the more recently marketed dexlansoprazole suggest it has no impact on the pharmacokinetics of diazepam, phenytoin, theophylline and warfarin. The CYP2C19-mediated interaction that seems to exist between clopidogrel and omeprazole or esomeprazole has been shown to be clinically important in research published since the 2006 review; this effect is not seen as a class effect of PPIs. Finally, data suggest that coadministration of PPIs with methotrexate may affect methotrexate pharmacokinetics, although the mechanism of interaction is not well understood. As was shown in the previous review, individual PPIs differ in their propensities to interact with other drugs and the extent to which their interaction profiles have been defined. The interaction profiles of omeprazole and pantoprazole sodium (pantoprazole-Na) have been studied most extensively. Several studies have shown that omeprazole carries a considerable potential for drug interactions because of its high affinity for CYP2C19 and moderate affinity for CYP3A4. In contrast, pantoprazole-Na appears to have lower potential for interactions with other medications. Lansoprazole and rabeprazole also seem to have a weaker potential for interactions than omeprazole, although their interaction profiles, along with those of esomeprazole and dexlansoprazole, have been less extensively investigated. Only a few drug interactions involving PPIs are of clinical significance. Nonetheless, the potential for drug interactions should be considered when choosing a PPI to manage gastric acid-related disorders. This is particularly relevant for elderly patients taking multiple medications, or for those receiving a concomitant medication with a narrow therapeutic index.
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Hochman J, Tang C, Prueksaritanont T. Drug–Drug Interactions Related to Altered Absorption and Plasma Protein Binding: Theoretical and Regulatory Considerations, and an Industry Perspective. J Pharm Sci 2015; 104:916-29. [DOI: 10.1002/jps.24306] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 11/13/2014] [Accepted: 11/14/2014] [Indexed: 01/28/2023]
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Abara WE, Smith L, Zhang S, Fairchild AJ, Heiman HJ, Rust G. The influence of race and comorbidity on the timely initiation of antiretroviral therapy among older persons living with HIV/AIDS. Am J Public Health 2014; 104:e135-41. [PMID: 25211735 DOI: 10.2105/ajph.2014.302227] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
OBJECTIVES We examined whether the timely initiation of antiretroviral therapy (ART) differed by race and comorbidity among older (≥ 50 years) people living with HIV/AIDS (PLWHA). METHODS We conducted frequency and descriptive statistics analysis to characterize our sample, which we drew from 2005-2007 Medicaid claims data from 14 states. We employed univariate and multivariable Cox regression analyses to evaluate the relationship between race, comorbidity, and timely ART initiation (≤ 90 days post-HIV/AIDS diagnosis). RESULTS Approximately half of the participants did not commence ART promptly. After we adjusted for covariates, we found that older PLWHA who reported a comorbidity were 40% (95% confidence interval = 0.26, 0.61) as likely to commence ART promptly. We found no racial differences in the timely initiation of ART among older PLWHA. CONCLUSIONS Comorbidities affect timely ART initiation in older PLWHA. Older PLWHA may benefit from integrating and coordinating HIV care with care for other comorbidities and the development of ART treatment guidelines specific to older PLWHA. Consistent Medicaid coverage helps ensure consistent access to HIV treatment and care and may eliminate racial disparities in timely ART initiation among older PLWHA.
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Affiliation(s)
- Winston E Abara
- Winston E. Abara is with the Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, GA. Lerissa Smith and Harry J. Heiman are with the Satcher Health Leadership Institute, Morehouse School of Medicine, Atlanta. Shun Zhang and George Rust are with the National Center for Primary Care, Morehouse School of Medicine. Amanda J. Fairchild is with the Department of Psychology, University of South Carolina, Columbia
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Doak B, Over B, Giordanetto F, Kihlberg J. Oral Druggable Space beyond the Rule of 5: Insights from Drugs and Clinical Candidates. ACTA ACUST UNITED AC 2014; 21:1115-42. [DOI: 10.1016/j.chembiol.2014.08.013] [Citation(s) in RCA: 282] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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A Novel Method for Determining the Solubility of Small Molecules in Aqueous Media and Polymer Solvent Systems Using Solution Calorimetry. Pharm Res 2014; 31:1735-43. [DOI: 10.1007/s11095-013-1278-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 12/31/2013] [Indexed: 10/25/2022]
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A clinical study to examine the potential effect of lansoprazole on the pharmacokinetics of bosutinib when administered concomitantly to healthy subjects. Clin Drug Investig 2014; 33:589-95. [PMID: 23839484 DOI: 10.1007/s40261-013-0103-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Bosutinib is an orally bioavailable, dual Src and Abl tyrosine kinase inhibitor approved in the USA for the treatment of Philadelphia chromosome-positive chronic myeloid leukemia following development of resistance or intolerance to prior therapy. In vitro studies demonstrated that bosutinib displays pH-dependent aqueous solubility, suggesting that concomitant administration of agents that alter gastric pH could affect bosutinib absorption. OBJECTIVES The objectives of this study were to evaluate the effect of lansoprazole, a gastric proton pump inhibitor, on the pharmacokinetics and safety of bosutinib. METHODS This open-label, non-randomized, phase I study involved inpatients and outpatients at a single site. The study participants were healthy men or women of non-childbearing potential aged 18-50 years. Each subject received bosutinib 400 mg on Day 1, lansoprazole 60 mg on Day 14, and bosutinib 400 mg co-administered with lansoprazole 60 mg on Day 15 under fasting conditions. The main outcome measure was the effect of multiple doses of lansoprazole on the pharmacokinetic profile of a single oral dose of bosutinib. RESULTS A total of 24 healthy male subjects were enrolled. Co-administration with lansoprazole decreased the mean maximum plasma concentration (C(max)) of bosutinib from 70.2 to 42.9 ng/mL, and the total area under the plasma concentration-time curve (AUC) from 1,940 to 1,470 ng·h/mL. Log-transformed bosutinib pharmacokinetic parameters indicated significant between-treatment differences; the least squares geometric mean ratio for C(max) was 54 % (95 % CI 42-70) and for AUC was 74 % (95 % CI 60-90). Mean apparent total body clearance from plasma after oral administration increased from 237 to 330 L/h, and the median time to reach Cmax increased from 5 to 6 h, although this change may be related to decreased bosutinib absorption when combined with lansoprazole. When co-administered with lansoprazole, bosutinib maintained an acceptable safety profile, which was primarily characterized by diarrhea (33 %), headache (21 %), and nausea (13 %). One subject experienced serious adverse events of diverticulitis, gastritis, and duodenitis after co-administration; however, no participant withdrew because of toxicity. CONCLUSIONS This study demonstrated that bosutinib absorption may be reduced when co-administered with lansoprazole or other proton pump inhibitors. Caution should be used with such drug combinations, as subtherapeutic exposure of bosutinib may limit its clinical antitumor activity; short-acting antacids are recommended instead.
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Sweet K, Pinilla-Ibarz J, Zhang L. Clinical advances in the management of chronic myelogenous leukemia: focus on bosutinib and patient considerations. Patient Prefer Adherence 2014; 8:981-6. [PMID: 25045255 PMCID: PMC4099191 DOI: 10.2147/ppa.s53160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The treatment for chronic myeloid leukemia has changed significantly over the past 15 years, and as of now, there are five BCR-ABL1 (breakpoint cluster region-Abelson murine leukemia viral oncogene homolog 1) tyrosine kinase inhibitors that have gained approval for treatment of this disease. All five are very effective drugs, and the decision surrounding which to use in specific patients is based on numerous factors. Bosutinib is one of the newer tyrosine kinase inhibitors to gain approval, and has been studied in the first-line setting as well as after failure of other tyrosine kinase inhibitors. It is an SRC-ABL1 (steroid receptor co-activator-ABL1) inhibitor that works in the presence of most kinase domain mutations. The primary side effects of bosutinib are gastrointestinal upsets. In the appropriate clinical setting, bosutinib can be considered a valuable addition to the armamentarium of treatments available for chronic myeloid leukemia.
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Affiliation(s)
- Kendra Sweet
- Malignant Hematology, H Lee Moffitt Cancer Center, Tampa, FL, USA
- Correspondence: Kendra Sweet, 12902 Magnolia Dr, FOB3-Heme, Tampa, FL 33611, USA, Email
| | | | - Ling Zhang
- Hematopathology, H Lee Moffitt Cancer Center, Tampa, FL, USA
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Mitra A, Kesisoglou F. Impaired Drug Absorption Due to High Stomach pH: A Review of Strategies for Mitigation of Such Effect To Enable Pharmaceutical Product Development. Mol Pharm 2013; 10:3970-9. [PMID: 23844623 DOI: 10.1021/mp400256h] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Amitava Mitra
- Biopharmaceutics, Product Value Enhancement, Pharmaceutical Sciences and Clinical Supply, Merck & Co. Inc., West Point, Pennsylvania 19486, United States
| | - Filippos Kesisoglou
- Biopharmaceutics, Product Value Enhancement, Pharmaceutical Sciences and Clinical Supply, Merck & Co. Inc., West Point, Pennsylvania 19486, United States
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Titus R, Kastenmeier A, Otterson MF. Consequences of Gastrointestinal Surgery on Drug Absorption. Nutr Clin Pract 2013; 28:429-36. [DOI: 10.1177/0884533613490740] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Rachel Titus
- Departments of Surgery, Physiology, and Digestive Diseases Center, Medical College of Wisconsin, Milwaukee
- Zablocki Veterans Affairs Medical Center, Milwaukee, Wisconsin
- The Department of Surgery, University of Chicago, Chicago, Illinois
| | - Andrew Kastenmeier
- Departments of Surgery, Physiology, and Digestive Diseases Center, Medical College of Wisconsin, Milwaukee
- Zablocki Veterans Affairs Medical Center, Milwaukee, Wisconsin
- The Department of Surgery, University of Chicago, Chicago, Illinois
| | - Mary F. Otterson
- Departments of Surgery, Physiology, and Digestive Diseases Center, Medical College of Wisconsin, Milwaukee
- Zablocki Veterans Affairs Medical Center, Milwaukee, Wisconsin
- The Department of Surgery, University of Chicago, Chicago, Illinois
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Zhu L, Persson A, Mahnke L, Eley T, Li T, Xu X, Agarwala S, Dragone J, Bertz R. Effect of Low-Dose Omeprazole (20 mg Daily) on the Pharmacokinetics of Multiple-Dose Atazanavir With Ritonavir in Healthy Subjects. J Clin Pharmacol 2013; 51:368-77. [DOI: 10.1177/0091270010367651] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Choi HY, Noh YH, Jin SJ, Kim YH, Kim MJ, Sung H, Jang SB, Lee SJ, Bae KS, Lim HS. Bioavailability and tolerability of combination treatment with revaprazan 200 mg + itopride 150 mg: a randomized crossover study in healthy male Korean volunteers. Clin Ther 2012; 34:1999-2010. [PMID: 22858177 DOI: 10.1016/j.clinthera.2012.07.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 07/04/2012] [Accepted: 07/10/2012] [Indexed: 12/24/2022]
Abstract
BACKGROUND To date, no definitive treatment of functional dyspepsia (FD) has been proven to be effective and reasonably well-tolerated. Proton pump inhibitors (PPIs) combined with prokinetic agents are considered an effective option. Revaprazan is a selective potassium-competitive acid blocker that reversibly inhibits gastric H(+)/K(+)-ATPase and shows effective acid suppression comparable to PPIs. Itopride is a prokinetic agent that has anticholinesterase activity as well as dopamine D(2) receptor antagonistic activity. For this reason, revaprazan and itopride have been prescribed for FD; however, no available studies have reported the pharmacokinetic interactions of these 2 drugs. OBJECTIVE The objective of this study was to compare the bioavailability and tolerability of revaprazan and itopride combination therapy to those of equally dosed monotherapies to acquire basic drug-drug interaction information about revaprazan. METHODS This multiple-dose, randomized crossover study was conducted in healthy male Korean subjects. Subjects received, in randomized sequence, a 7-day oral dose of revaprazan 200 mg once daily, itopride 50 mg TID, or both. Each treatment period was separated by a 7-day washout period. Blood samples were collected for up to 24 hours following the last dose at steady state, and drug concentrations were determined using validated LC/MS-MS. Pharmacokinetic properties were obtained using noncompartmental analysis. Drug tolerability was assessed throughout the study, using measurements of vital signs, clinical chemistry testing, and interviews. RESULTS A total of 30 subjects were enrolled in the study. Among them, 28 subjects completed revaprazan treatment, and 27 completed the study (3 subjects were withdrawn). The geometric mean ratios (GMRs) (90% CI) of C(max,ss), and AUC(τ,ss) with revaprazan were 0.92 (0.84-1.00) and 0.96 (0.89-1.03), respectively. The GMRs of C(max,ss) and AUC(τ,ss) with itopride were 1.07 (0.96-1.20) and 1.12 (1.06-1.18), respectively. A total of 15 adverse events (AEs) were reported in 8 subjects. All AEs were considered to be mild, and there were no clinically significant differences between treatment groups. CONCLUSION The findings from this study suggest bioequivalence between revaprazan given as monotherapy and in combination with itopride in these healthy Korean male volunteers, with no clinical significant drug-drug interaction. All treatments in this study was generally well tolerated. ClinicalTrials.gov identifier: NCT0133289.
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Affiliation(s)
- Hee Youn Choi
- Department of Clinical Pharmacology and Therapeutics, Asan Medical Center, Songpa-gu, Seoul, Korea
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Yin OQP, Giles FJ, Baccarani M, le Coutre P, Chiparus O, Gallagher N, Saglio G, Hughes TP, Hochhaus A, Kantarjian HM, Larson RA. Concurrent use of proton pump inhibitors or H2 blockers did not adversely affect nilotinib efficacy in patients with chronic myeloid leukemia. Cancer Chemother Pharmacol 2012; 70:345-50. [PMID: 22623211 DOI: 10.1007/s00280-012-1881-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Accepted: 04/30/2012] [Indexed: 11/26/2022]
Abstract
PURPOSE The impact of proton pump inhibitors (PPIs) and histamine H2 receptor antagonists (H2 blockers) on the efficacy of nilotinib was evaluated. METHODS Retrospective analyses were performed in patients with newly diagnosed Philadelphia chromosome-positive (Ph+) chronic myeloid leukemia in chronic phase (CML-CP; N = 492) and in patients with imatinib-resistant or imatinib-intolerant Ph+ CML-CP (N = 256) treated with nilotinib. RESULTS In the newly diagnosed population, 87 (17.7 %) and 49 (10.0 %) patients received PPIs and H2 blockers, respectively. Major molecular response at 12 months was achieved by 59 (49.6 %) patients who received at least one PPI or H2 blocker (n = 119) and 153 (41.0 %) patients who did not receive any comedication (n = 373; P = 0.13). PPIs and H2 blockers were used by 77 (30.1 %) and 17 (6.6 %) patients with imatinib-resistant or imatinib-intolerant CML-CP, respectively. Major cytogenetic response by 12 months was achieved by 55 (64.0 %) patients who received at least one PPI or H2 blocker (n = 86) versus 98 (57.6 %) patients who did not receive any comedication (n = 170; P = 0.40); 39 (45.3 %) versus 65 (38.2 %), respectively, achieved complete cytogenetic response by 12 months (P = 0.34). Similar findings were observed in patients who received comedication for >50 % of the time on nilotinib therapy. Nilotinib steady-state trough concentration was not affected by the presence of PPIs or H2 blockers. CONCLUSIONS Concurrent use of PPIs or H2 blockers did not affect the pharmacokinetics and efficacy of nilotinib in patients with Ph+ CML-CP.
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MESH Headings
- Antineoplastic Agents/administration & dosage
- Antineoplastic Agents/pharmacokinetics
- Antineoplastic Agents/therapeutic use
- Area Under Curve
- Drug Interactions
- Drug Therapy, Combination
- Histamine H2 Antagonists/administration & dosage
- Histamine H2 Antagonists/adverse effects
- Histamine H2 Antagonists/therapeutic use
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/blood
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Proton Pump Inhibitors/administration & dosage
- Proton Pump Inhibitors/adverse effects
- Proton Pump Inhibitors/therapeutic use
- Pyrimidines/administration & dosage
- Pyrimidines/pharmacokinetics
- Pyrimidines/therapeutic use
- Retrospective Studies
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Affiliation(s)
- Ophelia Q P Yin
- Oncology Clinical Pharmacology, Novartis Pharmaceuticals Corporation, Florham Park, NJ 07932, USA.
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Agréus L, Kuipers EJ, Kupcinskas L, Malfertheiner P, Di Mario F, Leja M, Mahachai V, Yaron N, Van Oijen M, Perez GP, Rugge M, Ronkainen J, Salaspuro M, Sipponen P, Sugano K, Sung J. Rationale in diagnosis and screening of atrophic gastritis with stomach-specific plasma biomarkers. Scand J Gastroenterol 2012; 47:136-47. [PMID: 22242613 PMCID: PMC3279132 DOI: 10.3109/00365521.2011.645501] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2011] [Revised: 11/22/2011] [Accepted: 11/22/2011] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS Atrophic gastritis (AG) results most often from Helicobacter pylori (H. pylori) infection. AG is the most important single risk condition for gastric cancer that often leads to an acid-free or hypochlorhydric stomach. In the present paper, we suggest a rationale for noninvasive screening of AG with stomach-specific biomarkers. METHODS The paper summarizes a set of data on application of the biomarkers and describes how the test results could be interpreted in practice. RESULTS In AG of the gastric corpus and fundus, the plasma levels of pepsinogen I and/or the pepsinogen I/pepsinogen II ratio are always low. The fasting level of gastrin-17 is high in AG limited to the corpus and fundus, but low or non-elevated if the AG occurs in both antrum and corpus. A low fasting level of G-17 is a sign of antral AG or indicates high intragastric acidity. Differentiation between antral AG and high intragastric acidity can be done by assaying the plasma G-17 before and after protein stimulation, or before and after administration of the proton pump inhibitors (PPI). Amidated G-17 will rise if the antral mucosa is normal in structure. H. pylori antibodies are a reliable indicator of helicobacter infection, even in patients with AG and hypochlorhydria. CONCLUSIONS Stomach-specific biomarkers provide information about the stomach health and about the function of stomach mucosa and are a noninvasive tool for diagnosis and screening of AG and acid-free stomach.
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Affiliation(s)
- Lars Agréus
- Karolinska Institute, Center for Family and Community Medicine, Stockholm, Sweden
| | - Ernst J Kuipers
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Limas Kupcinskas
- Institute for Digestive Research, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Peter Malfertheiner
- University, Department of Gastroenterology, Hepatology and Infectious Diseases, Magdeburg, Germany
| | - Francesco Di Mario
- Department of Clinical Sciences, University of Parma, Section of Gastroenterology, Parma, Italy
| | - Marcis Leja
- Riga East University Hospital, Digestive Diseases Centre, Riga, Latvia
| | - Varocha Mahachai
- Department of Medicine, Division of Gastroenterology, Chulalongkorn University, Thailand
| | - Niv Yaron
- Department of Gastroenterology, Rabin Medical Center, Petah Tikva, Israel
| | - Martijn Van Oijen
- Dept. Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - Massimo Rugge
- Department of Pathology, University of Padova, Padova, Italy
| | | | - Mikko Salaspuro
- University of Helsinki, Research Unit on Acetaldehyde and Cancer, Helsinki, Finland
| | | | - Kentaro Sugano
- Department of Internal Medicine, Division of Gastroenterology, Jichi Medical University, Tochigi, Japan
| | - Joseph Sung
- Institute of Digestive Disease, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
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Abstract
One may consider that drug-drug interactions (DDIs) associated with antacids is an obsolete topic because they are prescribed less frequently by medical professionals due to the advent of drugs that more effectively suppress gastric acidity (i.e. histamine H(2)-receptor antagonists [H2RAs] and proton pump inhibitors [PPIs]). Nevertheless, the use of antacids by ambulant patients may be ever increasing, because they are freely available as over-the-counter (OTC) drugs. Antacids consisting of weak basic substances coupled with polyvalent cations may alter the rate and/or the extent of absorption of concomitantly administered drugs via different mechanisms. Polyvalent cations in antacid formulations may form insoluble chelate complexes with drugs and substantially reduce their bioavailability. Clinical studies demonstrated that two classes of antibacterials (tetracyclines and fluoroquinolones) are susceptible to clinically relevant DDIs with antacids through this mechanism. Countermeasures against this type of DDI include spacing out the dosing interval - taking antacid either 4 hours before or 2 hours after administration of these antibacterials. Bisphosphonates may be susceptible to DDIs with antacids by the same mechanism, as described in the prescription information of most bisphosphonates, but no quantitative data about the DDIs are available. For drugs with solubility critically dependent on pH, neutralization of gastric fluid by antacids may alter the dissolution of these drugs and the rate and/or extent of their absorption. However, the magnitude of DDIs elicited by antacids through this mechanism is less than that produced by H2RAs or PPIs; therefore, the clinical relevance of such DDIs is often obscure. Magnesium ions contained in some antacid formulas may increase gastric emptying, thereby accelerating the rate of absorption of some drugs. However, the clinical relevance of this is unclear in most cases because the difference in plasma drug concentration observed after dosing shortly disappears. Recent reports have indicated that some of the molecular-targeting agents such as the tyrosine kinase inhibitors dasatinib and imatinib, and the thrombopoietin receptor agonist eltrombopag may be susceptible to DDIs with antacids. Finally, the recent trend of developing OTC drugs as combination formulations of an antacid and an H2RA is a concern because these drugs will increase the risk of DDIs by dual mechanisms, i.e. a gastric pH-dependent mechanism by H2RAs and a cation-mediated chelation mechanism by antacids.
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Affiliation(s)
- Ryuichi Ogawa
- Department of Pharmacotherapy, Meiji Pharmaceutical University, Kiyose, Tokyo, Japan.
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36
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Mitra A, Kesisoglou F, Beauchamp M, Zhu W, Chiti F, Wu Y. Using absorption simulation and gastric pH modulated dog model for formulation development to overcome achlorhydria effect. Mol Pharm 2011; 8:2216-23. [PMID: 21981752 DOI: 10.1021/mp200062a] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Impaired absorption of weakly basic drugs in patients with reduced gastric acidity can lead to loss of efficacy of the therapeutic agent. Hence, a robust formulation which can provide adequate exposure in achlorhydric patients is imperative to achieve the desired efficacy. In this report, formulation development of a weakly basic Merck compound A is described. Compound A shows lower solubility at higher pH and thus is prone to reduced exposure under conditions of achlorhydria, as the compound's solubility increases only in environments of less than pH 2. Several formulations with or without an acidifier were developed and characterized by in vitro dissolution and in gastric pH modified dog model to assess their bioperformance in high gastric pH conditions. To predict the bioperformance of these formulations in humans, a dissolution based absorption model was developed and validated against the observed PPI-interaction data in the clinic and the gastric pH-adjusted dog data. An additional absorption model was developed to allow for incorporation of the dog PK data to provide translation of preclinical to clinical exposure. Based on the in vitro dissolution, in silico absorption modeling and preclinical in vivo data, a citric acid-based formulation (F2) was selected for a human pharmacokinetic study. This study showed that exposures from F2 were not meaningfully different in the presence of proton pump inhibitor (PPI) as compared to non-PPI, thus confirming that the F2 formulation was successful in overcoming the achlorhydria effect. These efforts also highlighted that the complementary use of in vitro/in silico/in vivo (IVISIV) tools may be a helpful strategy in the development of formulations to overcome the achlorhydria effect and achieve adequate exposure in patients with high gastric pH.
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Affiliation(s)
- Amitava Mitra
- Biopharmaceutics, Product Value Enhancement, Pharmaceutical Sciences and Clinical Supply, Merck Sharp & Dohme Corp., West Point, Pennsylvania, United States.
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Saberi P, Ranatunga DK, Quesenberry CP, Silverberg MJ. Clinical implications of the nelfinavir-proton pump inhibitor drug interaction in patients with human immunodeficiency virus. Pharmacotherapy 2011; 31:253-61. [PMID: 21361735 DOI: 10.1592/phco.31.3.253] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
STUDY OBJECTIVE To determine if the concomitant use of nelfinavir and proton pump inhibitors (PPIs) in patients with human immunodeficiency virus (HIV) infection results in the loss of virologic control. DESIGN Retrospective cohort study. DATA SOURCE Pharmacy, laboratory, and administrative databases of a large integrated health care system in northern California. PATIENTS A total of 1147 HIV-positive adults who started nelfinavir therapy between November 1, 1998, and June 20, 2003; within this cohort, 141 patients (12.3%) were also prescribed PPIs. MEASUREMENTS AND MAIN RESULTS The effects on two virologic outcomes--achievement of undetectable HIV viral load and subsequent virologic rebound--were compared between patients receiving nelfinavir alone and those receiving nelfinavir with PPIs. Cox proportional hazards models were used, with adjustments for age, sex, race, HIV risk factors, hepatitis B or C coinfection, and other concurrent drugs known to affect the metabolism of nelfinavir. The use of PPIs had little effect on the ability to achieve an undetectable HIV viral load (adjusted hazard ratio [HR] 0.82, 95% confidence interval [CI] 0.58-1.19, p=0.29), but there was an approximate 50% increased risk of virologic rebound with the concurrent use of PPIs (adjusted HR 1.53, 95% CI 1.06-2.19, p=0.02). Short-term use of PPIs (defined as within 30 days of initial PPI dispensation) was not associated with increased risk of virologic rebound (HR 1.07, 95% CI 0.26-4.41, p=0.93) compared with no use of PPIs. CONCLUSION Use of PPIs should be minimized or avoided in patients who have attained an undetectable HIV viral load while taking a nelfinavir-based antiretroviral regimen. However, concomitant use of these drugs may be acceptable for indications where PPIs are required for fewer than 30 days.
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Affiliation(s)
- Parya Saberi
- Department of Medicine, University of California-San Francisco, San Francisco, California 94105, USA.
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38
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Solas C, Muret P. Niveau de preuve du suivi therapeutique pharmacologique de l’atazanavir. Therapie 2011; 66:213-9. [DOI: 10.2515/therapie/2011032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Accepted: 01/03/2011] [Indexed: 01/11/2023]
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Bentué-Ferrer D, Arvieux C, Tribut O, Ruffault A, Bellissant E. Clinical pharmacology, efficacy and safety of atazanavir: a review. Expert Opin Drug Metab Toxicol 2009; 5:1455-68. [DOI: 10.1517/17425250903321514] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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41
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Brouwers J, Brewster ME, Augustijns P. Supersaturating Drug Delivery Systems: The Answer to Solubility-Limited Oral Bioavailability? J Pharm Sci 2009; 98:2549-72. [PMID: 19373886 DOI: 10.1002/jps.21650] [Citation(s) in RCA: 690] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Joachim Brouwers
- Laboratory for Pharmacotechnology and Biopharmacy, Katholieke Universiteit Leuven, Gasthuisberg O/N 2 - Herestraat 49, Box 921, BE-3000 Leuven, Belgium
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42
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Garvey L, Winston A. Rilpivirine: a novel non-nucleoside reverse transcriptase inhibitor. Expert Opin Investig Drugs 2009; 18:1035-41. [DOI: 10.1517/13543780903055056] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Lucy Garvey
- Clinical Research Fellow, Imperial College London, Division of Medicine, Ground Floor, Clinical Trials, Winston Churchill Wing, London W2 1PG, London, UK ;
- St. Mary's Hospital, Imperial College Healthcare NHS Trust, Department of HIV Medicine, London W2 1NY, UK
| | - Alan Winston
- Clinical Research Fellow, Imperial College London, Division of Medicine, Ground Floor, Clinical Trials, Winston Churchill Wing, London W2 1PG, London, UK ;
- St. Mary's Hospital, Imperial College Healthcare NHS Trust, Department of HIV Medicine, London W2 1NY, UK
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43
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Lahner E, Annibale B, Delle Fave G. Systematic review: impaired drug absorption related to the co-administration of antisecretory therapy. Aliment Pharmacol Ther 2009; 29:1219-29. [PMID: 19302263 DOI: 10.1111/j.1365-2036.2009.03993.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Due to suppression of gastric acidity during antisecretory therapy, an impaired absorption of co-administered drugs may occur. AIM To review evidence of impaired drug absorption related to the use of co-administered PPIs or H2RAs. METHODS Systematic search of MEDLINE/EMBASE/SCOPUS databases (1980-September 2008) for English articles with keywords: drug malabsorption and absorption, stomach, anti-secretory/acid inhibitory drugs, histamine H2 antagonists, PPIs, gastric acid, pH, hypochlorhydria, gastric hypoacidity. From 2126 retrieved articles, 16 randomized crossover studies were identified investigating impaired absorption of nine different drugs in association with co-administration of PPIs or H2RAs. Information on investigated drug, study type, features of investigated subjects, study design, type of intervention, and study results were extracted. RESULTS The identified studies investigated the absorption kinetics of nine drugs. Acid suppression reduced absorption of ketoconazole, itraconazole, atazanavir, cefpodoxime, enoxacin and dipyridamole (median C(max) reduction by 66.5%). An increased absorption of nifedipine and digoxin (median AUC increase by 10%) and a 2-fold-increase in alendronate bioavailability were observed. CONCLUSIONS Gastric pH appears relevant for absorption of some cardiovascular or infectious disease agents. Antisecretory treatment may significantly modify the absorption of co-administered drugs.
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Affiliation(s)
- E Lahner
- Digestive and Liver Disease Unit, 2nd School of Medicine, University La Sapienza, Rome, Italy
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44
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Werneck-Silva AL, Prado IB. Gastroduodenal opportunistic infections and dyspepsia in HIV-infected patients in the era of Highly Active Antiretroviral Therapy. J Gastroenterol Hepatol 2009; 24:135-9. [PMID: 19054257 DOI: 10.1111/j.1440-1746.2008.05700.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIM Dyspeptic symptoms are frequently reported by human immunodefficiency virus (HIV)-infected patients under highly active antiretroviral therapy. Whether opportunistic infections are a cause of dyspepsia is still unknown. In this study we prospectively compare the prevalence of gastrointestinal opportunistic infections in dyspeptic versus non-dyspeptic HIV-infected patients with advanced immunodeficiency. PATIENTS AND METHODS Six hundred and ninety HIV-infected patients under highly active antiretroviral therapy underwent esophagogastroduodenoscopy with mucosal biopsies from the stomach and duodenum. Group 1: 500 patients (161 women, 339 men; mean age 38.8 years; mean CD4 count 154.3 cells/mm(3) with dyspeptic symptoms such as epigastric pain, nausea, vomiting and fullness. Group 2: 190 patients (169 men, 21 women; mean age 40.7 years; mean CD4 count 171.6 cell/mm(3)) with no dyspeptic symptoms. RESULTS Group 1: Gastrointestinal opportunistic infections were observed in eight (1.6%), and non-opportunistic parasites in two (0.4%), patients. They were: Cytomegalovirus (four patients), Cryptosporidium sp. (two patients), Schistosoma mansoni sp. (one patient), Strongyloides stercoralis (one patient) and Giardia sp. (two patients). In five patients esophagogastroduodenoscopy showed no mucosal lesions. Group 2: Giardia sp. was detected in two patients (1.1%: P = 0.07947). CONCLUSION Gastrointestinal opportunistic infections were shown in a small number of HIV-infected patients under highly active antiretroviral therapy with advanced immunodeficiency. Although gastrointestinal opportunistic infections were detected exclusively in the dyspeptic patient group, they could not be related to these symptoms, since the number of infected patients was not statistically significant. To correctly diagnose opportunistic infections, multiple biopsy specimens may be necessary even from normal-appearing mucosa.
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45
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Abstract
Azatanavir is a protease inhibitor (PI) approved for the treatment of HIV-1 infection. Atazanavir is a substrate and inhibitor of cytochrome P450 isozyme 3A and an inhibitor and inducer of P-glycoprotein. It has similar virologic efficacy as efavirenz and ritonavir-boosted lopinavir in antiretroviral-naive individuals. Its impact on lipids is less than other PIs and it is suitable for those in whom hyperlipidemia is undesirable. Ritonavir boosting of atazanavir enhances the bioavailability of atazanavir but may result in some elevation of lipids and is recommended for treatment-experienced patients and those receiving efavirenz or tenofovir. Ritonavir-boosted atazanavir has similar antiviral activity as ritonavir-boosted lopinavir in both antiretroviral therapy-naive and -experienced patients. Atazanavir causes unconjugated bilirubinemia in over 40% of patients but results in less than 2% discontinuations. Atazanavir is licensed for once-daily use and atazanavir/ritonavir competes with lopinavir/ritonavir as the most commonly prescribed PI.
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Affiliation(s)
- Robin Wood
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town Faculty of Health Sciences, Anzio Road, Observatory 7925, South Africa.
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46
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López-Cortés LF. [Pharmacology, pharmacokinetic features and interactions of atazanavir]. Enferm Infecc Microbiol Clin 2008; 26 Suppl 17:2-8. [PMID: 20116610 DOI: 10.1016/s0213-005x(08)76613-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Atazanavir (ATV) is an HIV protease inhibitor (IP) with a high in vitro activity against HIV-1, that demonstrates a high additive activity in the presence of other antiretrovirals and a synergic activity with other PI. Oral absorption is greater than 68%, maximum concentration (C(max)) being reached approximately 2 to 3 h after its administration. Its absorption is dependent on gastric pH, its administration being recommended after meals. The pharmacokinetics (PK) of ATV are non-linear; that is to say, its plasma concentrations (C(p)) do not increase in proportion to the dose. ATV is approximately 86% bound to plasma proteins. Its entry into the cerebrospinal fluid, semen or genital secretions varies but is generally less than 10-20%. Its passage across the placenta, measured as the mean of the ratios between the C(p) in umbilical cord and maternal blood, is 0.13. ATV is metabolised by oxidation by cytochrome P450 enzymes, subsequently being eliminated by the bile duct in the free or glucuronide form (80%) and by the urine. ATV is a weak competitive inhibitor of CYP3A4 and a strong inhibitor of uridine diphosphate-glucuronosyltransferase 1A1, which is the cause of the frequent high plasma bilirubin after its administration and of its pharmacological interactions.
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Affiliation(s)
- Luis F López-Cortés
- Servicio de Enfermedades Infecciosas, Hospital Universitario Virgen del Rocío, Sevilla, España.
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47
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Guaraldi G, Cocchi S, Motta A, Ciaffi S, Codeluppi M, Bonora S, Di Benedetto F, Masetti M, Floridia M, Baroncelli S, Pinetti D, D'Avolio A, Bertolini A, Esposito R. A pilot study on the efficacy, pharmacokinetics and safety of atazanavir in patients with end-stage liver disease. J Antimicrob Chemother 2008; 62:1356-64. [PMID: 18776190 DOI: 10.1093/jac/dkn383] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES Antiretroviral combinations including atazanavir are currently not recommended in HIV-infected patients with end-stage liver disease (ESLD). The objective of our study was to evaluate efficacy, pharmacokinetics and safety of unboosted atazanavir in HIV-infected patients with ESLD screened for orthotopic liver transplantation (OLT(x)). Patients and methods Single-arm, 24 week pilot study. Atazanavir-naive patients undergoing highly active antiretroviral therapy were switched to atazanavir 400 mg/day plus two non-thymidine nucleoside reverse transcriptase inhibitors. Results Fifteen patients (10 males and 5 females) were included. In the study period, 2 patients were transplanted and 10 completed 24 weeks of atazanavir treatment. Median area under the concentration-time curve at week 4 was 19 211 ng.h/mL (IQR = 8959-27 500). At week 24, median atazanavir trough concentrations (C(trough)) per patient calculated across the study were above the minimum effective concentration (MEC = 100 ng/mL) in 8 of 10 subjects. Atazanavir C(trough) time-point values were always above the MEC in five patients. The other three subjects experienced only one determination below the MEC, with median atazanavir C(trough) levels across the study being above the MEC in two of them. At 8 of 11 time-points when atazanavir and proton pump inhibitors (PPIs) were co-administered and at 16 of 19 time-points in which patients had a concomitant tenofovir association, atazanavir C(trough) was above the MEC. Conclusions Unboosted atazanavir showed a favourable pharmacokinetic profile and was able to maintain or gain immuno-virological eligibility for OLT(x) in all patients. Limited biochemical toxicities (including unconjugated hyperbilirubinaemia) and allowance of concomitant administration of tenofovir and PPIs were observed.
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Affiliation(s)
- Giovanni Guaraldi
- Department of Internal Medicine and Medical Specialties, Clinic of Infectious Diseases, University of Modena and Reggio Emilia, Modena, Italy
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Shi S, Klotz U. Proton pump inhibitors: an update of their clinical use and pharmacokinetics. Eur J Clin Pharmacol 2008; 64:935-51. [PMID: 18679668 DOI: 10.1007/s00228-008-0538-y] [Citation(s) in RCA: 228] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2008] [Accepted: 07/01/2008] [Indexed: 12/21/2022]
Abstract
BACKGROUND Proton pump inhibitors (PPIs) represent drugs of first choice for treating peptic ulcer, Helicobacter pylori infection, gastrooesophageal reflux disease, nonsteroidal anti-inflammatory drug (NSAID)-induced gastrointestinal lesions (complications), and Zollinger-Ellison syndrome. RESULTS The available agents (omeprazole/esomeprazole, lansoprazole, pantoprazole, and rabeprazole) differ somewhat in their pharmacokinetic properties (e.g., time-/dose-dependent bioavailability, metabolic pattern, interaction potential, genetic variability). For all PPIs, there is a clear relationship between drug exposure (area under the plasma concentration/time curve) and the pharmacodynamic response (inhibition of acid secretion). Furthermore, clinical outcome (e.g., healing and eradication rates) depends on maintaining intragastric pH values above certain threshold levels. Thus, any changes in drug disposition will subsequently be translated directly into clinical efficiency so that extensive metabolizers of CYP2C19 will demonstrate a higher rate of therapeutic nonresponse. CONCLUSIONS This update of pharmacokinetic, pharmacodynamic, and clinical data will provide the necessary guide by which to select between the various PPIs that differ-based on pharmacodynamic assessments-in their relative potencies (e.g., higher doses are needed for pantoprazole and lansoprazole compared with rabeprazole). Despite their well-documented clinical efficacy and safety, there is still a certain number of patients who are refractory to treatment with PPIs (nonresponder), which will leave sufficient space for future drug development and clinical research.
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Affiliation(s)
- Shaojun Shi
- Dr Margarete Fischer-Bosch-Institut für Klinische Pharmakologie, Stuttgart, Germany
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Fang AF, Damle BD, LaBadie RR, Crownover PH, Hewlett D, Glue PW. Significant decrease in nelfinavir systemic exposure after omeprazole coadministration in healthy subjects. Pharmacotherapy 2008; 28:42-50. [PMID: 18154473 DOI: 10.1592/phco.28.1.42] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
STUDY OBJECTIVES To assess the effect of omeprazole on the multiple-dose (steady-state) pharmacokinetics and safety of nelfinavir, and to evaluate the safety and tolerability of nelfinavir when administered alone and with omeprazole. DESIGN Open-label, two-period, single-fixed-sequence study. SETTING Clinical research unit of a large, teaching hospital. PARTICIPANTS Twenty healthy volunteers (mean age 26 +/- 9 yrs, range 18-48 yrs). Intervention. Subjects received nelfinavir 1250 mg every 12 hours for 4 days (period 1). After a 7-day washout period, subjects were coadministered nelfinavir 1250 mg every 12 hours and omeprazole 40 mg every 24 hours for 4 days (period 2). MEASUREMENTS AND MAIN RESULTS The pharmacokinetics of nelfinavir and its active metabolite M8 were determined on day 4 of both periods. Plasma samples were assayed by a high-performance liquid chromatography-ultraviolet method for nelfinavir and M8 concentrations, and noncompartmental pharmacokinetic analysis was performed by using analytical software. In the presence of omeprazole, nelfinavir area under the concentration-time curve over the dosing interval (AUC(tau)), maximum observed plasma concentration (C(max)), and minimum observed plasma concentration (C(min)) were reduced by an average of 36%, 37%, and 39%, respectively, relative to administration of nelfinavir alone. The AUC(tau), C(max), and C(min) of M8 were reduced by an average of 92%, 89%, and 75%, respectively. The slopes of the terminal elimination phase of nelfinavir and M8 plasma concentration-time curves were similar between treatments. Nelfinavir was well tolerated when administered alone and when coadministered with omeprazole. CONCLUSION The observed reduction in the systemic exposure to both nelfinavir and its active metabolite M8 after coadministration with omeprazole could result in loss of virologic control and potential emergence of drug resistance. Hence, omeprazole should not be coadministered to patients taking nelfinavir.
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Falcon RW, Kakuda TN. Drug Interactions between HIV Protease Inhibitors and Acid-Reducing Agents. Clin Pharmacokinet 2008; 47:75-89. [DOI: 10.2165/00003088-200847020-00001] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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