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Islambulchilar Z, Barfar A, Mirzaeei S. Development of fexofenadine self-microemulsifying delivery systems: an efficient way to improve intestinal permeability. Ther Deliv 2024:1-12. [PMID: 38941109 DOI: 10.1080/20415990.2024.2363635] [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: 01/22/2024] [Accepted: 05/31/2024] [Indexed: 06/29/2024] Open
Abstract
Aim: The present study aimed to prepare and evaluate fexofenadine self-microemulsifying drug-delivery systems (SMEDDS) formulation and to determine and compare its intestinal permeability using in situ single-pass intestinal perfusion (SPIP) technique. Methods: Fexofenadine-loaded SMEDDS were prepared and optimized. Droplet size, polydispersity index, zeta potential, drug release and intestinal permeability were evaluated. Results: Optimized formulation consisted of 15% oil, 80% surfactant and 5% cosolvent. Droplet size and drug loading of optimized formulation was 13.77 nm and 60 mg/g and it has released 90% of its drug content. Intestinal permeability of fexofenadine was threefold enhanced in SMEDDS compared with free fexofenadine. Conclusion: The results of our study revealed that SMEDDS could be a promising tool for oral delivery of fexofenadine with enhanced dissolution rate and intestinal permeability.
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Affiliation(s)
- Ziba Islambulchilar
- Department of Pharmaceutics, Faculty of pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ashkan Barfar
- Department of Pharmaceutics, Faculty of pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shahla Mirzaeei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Nano Drug Delivery Research Centre, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Rollason V, Mouterde M, Daali Y, Čížková M, Priehodová E, Kulichová I, Posová H, Petanová J, Mulugeta A, Makonnen E, Al-Habsi A, Davidson R, Al-Balushi KK, Al-Thihli K, Cerná M, Al-Yahyaee S, Černý V, Yimer G, Poloni ES, Desmeules J. Safety of the Geneva Cocktail, a Cytochrome P450 and P-Glycoprotein Phenotyping Cocktail, in Healthy Volunteers from Three Different Geographic Origins. Drug Saf 2021; 43:1181-1189. [PMID: 32851583 PMCID: PMC7575470 DOI: 10.1007/s40264-020-00983-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
INTRODUCTION AND OBJECTIVE: Cytochrome P450 enzymes are the major drug-metabolizing enzymes in humans and the importance of drug transport proteins, in particular P-glycoprotein, in the variability of drug response has also been highlighted. Activity of cytochrome P450 enzymes and P-glycoprotein can vary widely between individuals and genotyping and/or phenotyping can help assess their activity. Several phenotyping cocktails have been developed. The Geneva cocktail is composed of a specific probe for six different cytochrome P450 enzymes and one for P-glycoprotein and was used in the context of a research aiming at exploring genotypes and phenotypes in distinct human populations (NCT02789527). The aim of the present study is to solely report the safety results of the Geneva cocktail in the healthy volunteers of these populations. MATERIALS AND METHODS The Geneva cocktail is composed of caffeine, bupropion, flurbiprofen, omeprazole, dextromethorphan, midazolam, and fexofenadine. The volunteers fasted and avoided drinking caffeine-containing beverages or food and grapefruit juice overnight before receiving the cocktail orally. They provided blood spots for the probes' concentrations at 2, 3, and 6 h after ingestion and were asked about adverse events. RESULTS A total of 265 healthy adult volunteers were included from Ethiopia, Oman, and the Czech Republic. The mean plasma concentrations at the 2-h sampling time of each probe drug in the total sample were: 1663 ng/mL for caffeine, 8 ng/mL for bupropion, 789 ng/mL for flurbiprofen, 6 ng/mL for dextromethorphan, 2 ng/mL for midazolam, 35 ng/mL for fexofenadine, and 103 ng/mL for omeprazole. Four adverse events were observed representing an occurrence of 1.5%. All these events were categorized as mild to moderate, non-serious, and resolved spontaneously. A causal link with the cocktail cannot be excluded because of the temporal relationship but is at most evaluated as possible according to the World Health Organization-Uppsala Monitoring Centre causal assessment system. CONCLUSIONS In this research, healthy volunteers from three different human populations were phenotyped with the Geneva cocktail. Four adverse events were observed, confirming the safety of this cocktail that is given at lower than clinically relevant doses and therefore results in concentrations lower than those reported to cause adverse events.
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Affiliation(s)
- Victoria Rollason
- Division of Clinical Pharmacology and Toxicology, Geneva University Hospitals and University of Geneva, Rue Gabrielle-Perret-Gentil 4, 1211, Geneva, Switzerland.
| | - Médéric Mouterde
- Department of Genetics and Evolution (GENEV), Anthropology Unit, University of Geneva, 30, Quai Ernest-Ansermet, 1205 Geneva, Switzerland.
| | - Youssef Daali
- Division of Clinical Pharmacology and Toxicology, Geneva University Hospitals and University of Geneva, Rue Gabrielle-Perret-Gentil 4, 1211, Geneva, Switzerland
| | - Martina Čížková
- Department of Anthropology and Human Genetics, Faculty of Science, Charles University, Prague, Czech Republic
| | - Edita Priehodová
- Department of Anthropology and Human Genetics, Faculty of Science, Charles University, Prague, Czech Republic
| | - Iva Kulichová
- Department of Anthropology and Human Genetics, Faculty of Science, Charles University, Prague, Czech Republic
| | - Helena Posová
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jitka Petanová
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Anwar Mulugeta
- Department of Pharmacology and Clinical Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Eyasu Makonnen
- Department of Pharmacology and Clinical Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
- Center for Innovative Drug Development and Therapeutic Trials for Africa, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | | | - Robin Davidson
- Department of Family Medicine, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman
| | - Khalid K Al-Balushi
- Department of Pharmacology and Clinical Pharmacy, Sultan Qaboos University, Muscat, Sultanate of Oman
| | - Khalid Al-Thihli
- Department of Genetics, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman
| | - Marie Cerná
- Department of Medical Genetics, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Said Al-Yahyaee
- Department of Genetics, College of Medicine and Health Sciences, Muscat, Sultanate of Oman
| | - Viktor Černý
- Department of Anthropology and Human Genetics, Faculty of Science, Charles University, Prague, Czech Republic
| | - Getnet Yimer
- Global One Health Initiative, Office of International Affairs, The Ohio State University, Columbus, OH, USA
| | - Estella S Poloni
- Department of Genetics and Evolution (GENEV), Anthropology Unit, University of Geneva, 30, Quai Ernest-Ansermet, 1205 Geneva, Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3), Geneva, Switzerland
| | - Jules Desmeules
- Division of Clinical Pharmacology and Toxicology, Geneva University Hospitals and University of Geneva, Rue Gabrielle-Perret-Gentil 4, 1211, Geneva, Switzerland
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Dobrovolskaite A, Madan M, Pandey V, Altomare DA, Phanstiel O. The discovery of indolone GW5074 during a comprehensive search for non-polyamine-based polyamine transport inhibitors. Int J Biochem Cell Biol 2021; 138:106038. [PMID: 34252566 DOI: 10.1016/j.biocel.2021.106038] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/28/2021] [Accepted: 07/05/2021] [Indexed: 01/15/2023]
Abstract
The native polyamines putrescine, spermidine, and spermine are essential for cell development and proliferation. Polyamine levels are often increased in cancer tissues and polyamine depletion is a validated anticancer strategy. Cancer cell growth can be inhibited by the polyamine biosynthesis inhibitor difluoromethylornithine (DFMO), which inhibits ornithine decarboxylase (ODC), the rate-limiting enzyme in the polyamine biosynthesis pathway. Unfortunately, cells treated with DFMO often replenish their polyamine pools by importing polyamines from their environment. Several polyamine-based molecules have been developed to work as polyamine transport inhibitors (PTIs) and have been successfully used in combination with DFMO in several cancer models. Here, we present the first comprehensive search for potential non-polyamine based PTIs that work in human pancreatic cancer cells in vitro. After identifying and testing five different categories of compounds, we have identified the c-RAF inhibitor, GW5074, as a novel non-polyamine based PTI. GW5074 inhibited the uptake of all three native polyamines and a fluorescent-polyamine probe into human pancreatic cancer cells. GW5074 significantly reduced pancreatic cancer cell growth in vitro when treated in combination with DFMO and a rescuing dose of spermidine. Moreover, GW5074 alone reduced tumor growth when tested in a murine pancreatic cancer mouse model in vivo. In summary, GW5074 is a novel non-polyamine-based PTI that potentiates the anticancer activity of DFMO in pancreatic cancers.
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Affiliation(s)
- Aiste Dobrovolskaite
- Department of Medical Education, College of Medicine, University of Central Florida, Orlando, 32827, United States
| | - Meenu Madan
- Department of Medical Education, College of Medicine, University of Central Florida, Orlando, 32827, United States
| | - Veethika Pandey
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, 32827, United States
| | - Deborah A Altomare
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, 32827, United States
| | - Otto Phanstiel
- Department of Medical Education, College of Medicine, University of Central Florida, Orlando, 32827, United States.
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Mandeep, Kaur S, Samal SK, Roy S, Sangamwar AT. Successful oral delivery of fexofenadine hydrochloride by improving permeability via phospholipid complexation. Eur J Pharm Sci 2020; 149:105338. [PMID: 32283194 DOI: 10.1016/j.ejps.2020.105338] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/18/2020] [Accepted: 04/04/2020] [Indexed: 02/07/2023]
Abstract
The present work aimed to enhance liposolubility along with intestinal permeability of BCS class III drug fexofenadine (FEX) via phospholipid complexation strategy in order to improve its oral bioavailability. This work demonstrated the minimized P-gp efflux and augmented absorption of FEX when fabricated as phospholipid complex. The fexofenadine-phospholipid complex (FEX-PLC) was prepared using widely used solvent evaporation method. Among three phospholipids, Phospholipon® 90 H was screened out for further studies due to high drug content and physical form. The FTIR spectra demonstrated the disappearance of characteristic peaks of FEX which could be attributed to shielding by phospholipid due to molecular interactions between FEX and phospholipid. The differential scanning calorimetry (DSC) and powder X-ray diffractometry (PXRD) revealed the amorphous state of FEX in the complex. The partition coefficient study indicated the increased in lipophilicity which can further be correlated with 1.85 ± 0.850 fold enhancement in intestinal permeability of FEX-PLC in comparison to FEX in Caco-2 permeability assay. Furthermore, efflux ratio of FEX was decreased significantly from 4.04 (FEX) to 1.34 (FEX-PLC) which indicated inhibition of P-gp efflux of FEX. The in vivo evaluation in Wistar rats presented 3.38 fold increment in oral bioavailability of FEX-PLC as compared to FEX. In summary, the phospholipid complexation demonstrated as a simple and promising approach to tackle oral bioavailability hurdles of BCS class III drugs and convert them to BCS class I drugs.
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Affiliation(s)
- Mandeep
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, 160062, India
| | - Shamandeep Kaur
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, 160062, India
| | - Sanjaya K Samal
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, 160062, India
| | - Sabyasachi Roy
- Department of Pharmaceutical Technology (Formulations), National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, 160062, India
| | - Abhay T Sangamwar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Sector-67, S.A.S Nagar, Punjab, 160062, India.
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Huang CZ, Jiang ZH, Wang J, Luo Y, Peng H. Antihistamine effects and safety of fexofenadine: a systematic review and Meta-analysis of randomized controlled trials. BMC Pharmacol Toxicol 2019; 20:72. [PMID: 31783781 PMCID: PMC6884918 DOI: 10.1186/s40360-019-0363-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 10/02/2019] [Indexed: 11/10/2022] Open
Abstract
Background As a new generation antihistamine, fexofenadine has been widely used in allergic diseases. However, there is still a lack of collective evidence regarding the antihistamine effects and safety profiles of fexofenadine relative to other antihistamine drugs and placebo. Therefore, we aimed to systematically evaluate the antihistamine effects and safety of fexofenadine. Methods An electronic literature search of randomized controlled trials (RCTs) was performed using Embase, Cochrane and PubMed from establishment to January 1st, 2018. RCTs comparing the antihistamine effects or safety (adverse events, sedative effects, and cognitive/psychomotor function) of fexofenadine with either other antihistamines or placebo for healthy subjects and patients with allergy were selected. Results Fifty-one studies of 14,551 participants met the inclusion criteria. When compared with the first-generation antihistamines, fexofenadine produced significantly lower adverse events frequency (OR = 0.446; 95% CI: 0.214 to 0.929, P = 0.031), significantly lower sedative effects frequency (OR = 0.265; 95% CI: 0.072 to 0.976, P = 0.046) and significantly less change of all cognitive/psychomotor function. When compared with the second-generation antihistamines, fexofenadine produced significantly marginal sedative effects (OR = 0.59; 95% CI, 0.38 to 0.93; P = 0.02) and significantly less change of most of the cognitive/psychomotor function. When compared with placebo, fexofenadine produced more significant antihistamine effects. Conclusions Fexofenadine has a positive antihistamine effect, which is probably no worse than the second-generation antihistamines. Fexofenadine probably has a favorable safety profile, which is more likely better than that of the first-generation antihistamines. There is lack of data to support that fexofenadine has a better overall safety profile compared to the second-generation antihistamines, however, some presently available evidence on sedative effects and certain aspects of cognitive/psychomotor function favors fexofenadine. Therefore, fexofenadine may be worthy of recommendation for safety related workers.
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Affiliation(s)
- Cheng-Zhi Huang
- Department of Otolaryngology Head and Neck Surgery, General Hospital of Southern Theatre Command of PLA, Guangzhou, 510010, China.,Department of Otolaryngology Head and Neck Surgery, Shenzhen University General Hospital, Shenzhen, 518055, China
| | - Zhi-Hui Jiang
- Department of Pharmacy, General Hospital of Southern Theatre Command of PLA, Guangzhou, 510010, China
| | - Jian Wang
- Department of Otolaryngology Head and Neck Surgery, General Hospital of Southern Theatre Command of PLA, Guangzhou, 510010, China
| | - Yue Luo
- Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510315, China.,Cancer Center, Southern Medical University, Guangzhou, 510315, China
| | - Hua Peng
- Department of Otolaryngology Head and Neck Surgery, General Hospital of Southern Theatre Command of PLA, Guangzhou, 510010, China.
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Lacave G, Cui Y, Salbany A, Flanagan C, Grande F, Cox E. Erysipelas vaccination protocols in dolphins Tursiops truncatus evaluated by antibody responses over twenty continuous years. DISEASES OF AQUATIC ORGANISMS 2019; 134:237-255. [PMID: 31219054 DOI: 10.3354/dao03367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Erysipelas is an infection caused by Erysipelothrix rhusiopathiae that affects many different species around the world, including cetaceans. The acute septicemic form can rapidly cause death in bottlenose dolphins Tursiops truncatus. The ultimate goals of this long-term study were the development and identification of the most effective vaccination protocol against clinical erysipelas in T. truncatus using a commercially available swine vaccine, and to determine whether there is a need for a semi-annual vaccination versus an annual vaccination. The present study concentrated on the immunization of a dolphin population (7 wild-born and 22 captive-born individuals) with 2 swine vaccines, the European 'Eurovac Ery®' vaccine and the American 'ER Bac Plus®' vaccine, and immunological profile results over a 20-yr time period. The general protocol was a primo-vaccination (between 3 and 7 mo of age for calves) with or without a booster 1 mo post primo-vaccination and either annual or semi-annual vaccination thereafter. Sera were collected prior to vaccination, 2 wk post-vaccination and monthly. A dolphin-specific ELISA was developed to analyze the erysipelas-specific antibody response of vaccinated animals. The final ELISA results (n = 1362 samples from 29 animals at pre- and post-vaccination time) suggest that (1) there is a significant difference in antibody levels at the start of the vaccination between older and younger animals; (2) at least 3 vaccinations are necessary to obtain antibody levels above the levels at pre-vaccination; (3) thereafter, annual vaccinations seem sufficient to keep antibody levels above the levels at pre-vaccination; and (4) both vaccines induced similar responses. No case of erysipelas infection was observed in this population during the study.
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Choi PM, O'Brien JW, Li J, Jiang G, Thomas KV, Mueller JF. Population histamine burden assessed using wastewater-based epidemiology: The association of 1,4‑methylimidazole acetic acid and fexofenadine. ENVIRONMENT INTERNATIONAL 2018; 120:172-180. [PMID: 30096611 DOI: 10.1016/j.envint.2018.08.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/02/2018] [Accepted: 08/03/2018] [Indexed: 05/06/2023]
Abstract
Systematic sampling and analysis of wastewater has become an important tool for monitoring consumption of drugs and other substances, and has been proposed as a method to evaluate aspects of population health using endogenous biomarkers. 1,4‑methylimidazoleacetic acid (MIAA) is an endogenous biomarker and metabolite of histamine turnover. Its urinary excretion is elevated in conditions such as mastocytosis, hay fever, hives, food allergies and anaphylaxis. The aim of this study was to develop and apply methods for MIAA in wastewater and compare its occurrence with antihistamine use in wastewater. Consecutive daily samples were collected from seven catchments serving populations from 3000 to 2 million and covering rural and urban communities during the 2016 Census in Australia. MIAA and the antihistamines (ranitidine, fexofenadine, cetirizine) were quantified consistently. Per capita excretion of MIAA (mg/d/capita) estimated from the WW concentrations were consistent with findings from previous clinical studies. We found significant positive correlations between loads of MIAA and fexofenadine (R2 = 0.68, p < 0.0001) and cetirizine (R2 = 0.25, p = 0.03) across the various catchments. Sewer reactor experiments on the degradation of MIAA and the antihistamines found that fexofenadine is stable for at least 24 h while MIAA, ranitidine and cetirizine are subject to degradation, and this should be considered in interpretations. To the best of our knowledge, this study is the first wastewater study to introduce and monitor an endogenous metabolite of histamine, and the first study to monitor and relate proxies of disease and treatment of disease.
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Affiliation(s)
- Phil M Choi
- Queensland Alliance for Environmental Health Science, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia.
| | - Jake W O'Brien
- Queensland Alliance for Environmental Health Science, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia
| | - Jiaying Li
- Advanced Water Management Centre, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Guangming Jiang
- Advanced Water Management Centre, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Kevin V Thomas
- Queensland Alliance for Environmental Health Science, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia
| | - Jochen F Mueller
- Queensland Alliance for Environmental Health Science, The University of Queensland, 20 Cornwall Street, Woolloongabba, Queensland 4102, Australia
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Ikram M, Rehman S, Khan A, Schulzke C. Crystal structure of the tri-ethyl-ammonium salt of 3-[(4-hy-droxy-3-meth-oxy-phen-yl)(4-hy-droxy-2-oxo-2 H-chromen-3-yl)meth-yl]-2-oxo-2 H-chromen-4-olate. Acta Crystallogr E Crystallogr Commun 2018; 74:282-286. [PMID: 29765707 PMCID: PMC5947787 DOI: 10.1107/s2056989018001561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 01/23/2018] [Indexed: 11/27/2022]
Abstract
The reaction between 3,3'-[(3-meth-oxy-4-hy-droxy-phen-yl)methanedi-yl]bis-(4-hy-droxy-2H-chromen-2-one) and tri-ethyl-amine in methanol yielded the title compound tri-ethyl-ammonium 3-[(4-hy-droxy-3-meth-oxy-phen-yl)(4-hy-droxy-2-oxo-2H-chromen-3-yl)meth-yl]-2-oxo-2H-chromen-4-olate, C6H16N+·C26H17O8- or (NHEt3)+(C26H17O8)-, which crystallized directly from its methano-lic mother liquor. The non-deprotonated coumarol substituent shares its H atom with the deprotonated coumarolate substituent in a short negative charge-assisted hydrogen bond in which the freely refined H atom is moved from its parent O atom towards the acceptor O atom, elongating the covalent O-H bond to 1.18 (3) Å. The respective H atom can therefore be described as being shared by two alcohol O atoms, culminating in the formation of an eight-membered ring.
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Affiliation(s)
- Muhammad Ikram
- Department of Chemistry, Abdul Wali Khan University Mardan, Pakistan
| | - Sadia Rehman
- Department of Chemistry, Abdul Wali Khan University Mardan, Pakistan
| | - Afzal Khan
- Department of Microbiology, Abbotabad University of Science and Technology, Abbotabad, Pakistan
| | - Carola Schulzke
- Institut für Biochemie, Ernst-Moritz-Arndt Universität Greifswald, Felix-Hausdorff-Strasse 4, D-17487 Greifswald, Germany
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Jiang Y, Liu Z, Holenz J, Yang H. Competitive Intelligence–based Lead Generation and Fast Follower Approaches. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/9783527677047.ch08] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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10
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Carbopol-incorporated thermoreversible gel for intranasal drug delivery. Molecules 2015; 20:4124-35. [PMID: 25749681 PMCID: PMC6272239 DOI: 10.3390/molecules20034124] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 02/27/2015] [Accepted: 03/02/2015] [Indexed: 11/17/2022] Open
Abstract
The present study describes the preparation and evaluation of a poloxamer 407 (P407)-based thermoreversible gel using Carbopol 934P (C934P) as a mucoadhesive polymer and hydroxypropyl-β-cyclodextrin (HP-β-CD) for enhancing the aqueous solubility and intranasal absorption of fexofenadine hydrochloride (FXD HCl). The prepared gels were characterized by gelation temperature, viscoelasticity, and drug release profile. Thermoreversibility of P407/C934P gel was demonstrated by rheological studies. The incorporation of carbopol into P407 gel also reduced the amounts of drug released from the gel formulations (p < 0.05). In vivo pharmacokinetic results of the prepared gel formulations in rabbits (at 0.5 mg/kg dose) showed that the relative bioavailability of drug from P407/C934P gel was 11.3 and 2.7-fold higher than those of drug solution and P407 gel group, respectively. These findings suggested that developed thermoreversible gels could be used as promising dosage forms to improve intranasal drug absorption.
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Júnior MADR, de Faria ACM, Velozo EDS, Dalla Costa T, de Andrade FP, de Castro WV. Determination of fexofenadine in Hank's balanced salt solution by high-performance liquid chromatography with ultraviolet detection: application to Caco-2 cell permeability studies. Biomed Chromatogr 2014; 29:537-44. [DOI: 10.1002/bmc.3310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 06/26/2014] [Accepted: 07/22/2014] [Indexed: 01/18/2023]
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Sjögren E, Hedeland M, Bondesson U, Lennernäs H. Effects of verapamil on the pharmacokinetics and hepatobiliary disposition of fexofenadine in pigs. Eur J Pharm Sci 2014; 57:214-23. [PMID: 24075962 DOI: 10.1016/j.ejps.2013.09.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 08/19/2013] [Accepted: 09/18/2013] [Indexed: 11/29/2022]
Abstract
The pharmacokinetics (PK) of fexofenadine (FEX) in pigs were investigated with the focus on exploring the interplay between hepatic transport and metabolism when administered intravenously (iv) alone or with verapamil. The in vivo pig model enabled simultaneous sampling from plasma (pre-liver, post-liver and peripheral), bile and urine. Each animal was administered FEX 35mg iv alone or with verapamil 35mg. Plasma, bile and urine were analyzed with liquid chromatography-tandem mass spectrometry. Non-compartmental analysis (NCA) was used to estimate traditional PK parameters. In addition, a physiologically based pharmacokinetic (PBPK) model consisting of 11 compartments (6 tissues +5 sample sites) was applied for mechanistic elucidation and estimation of individual PK parameters. FEX had a terminal half-life of 1.7h and a liver extraction of 3%. The fraction of the administered dose of unchanged FEX excreted into the bile was 25% and the bile exposure was more than 100 times higher than the portal vein total plasma exposure, indicating carrier-mediated (CM) disposition processes in the liver. 23% of the administered dose of FEX was excreted unchanged in the urine. An increase in FEX plasma exposure (+50%) and a decrease in renal clearance (-61%) were detected by NCA as a direct effect of concomitant administration of verapamil. However, analysis of the PBPK model also revealed that biliary clearance was significantly inhibited (-53%) by verapamil. In addition, PBPK analysis established that metabolism and CM uptake were important factors in the disposition of FEX in the liver. In conclusion, this study demonstrated that CM transport of FEX in both liver and kidneys was inhibited by a single dose of verapamil.
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Affiliation(s)
- Erik Sjögren
- Department of Pharmacy, Biopharmaceutic Research Group, Uppsala University, Box 580, SE-751 23 Uppsala, Sweden.
| | - Mikael Hedeland
- Department of Medicinal Chemistry, Division of Analytical Pharmaceutical Chemistry, Uppsala University, Box 573, SE-751 23 Uppsala, Sweden; National Veterinary Institute (SVA), Department of Chemistry, Environment and Feed Hygiene, SE-751 89 Uppsala, Sweden
| | - Ulf Bondesson
- Department of Medicinal Chemistry, Division of Analytical Pharmaceutical Chemistry, Uppsala University, Box 573, SE-751 23 Uppsala, Sweden; National Veterinary Institute (SVA), Department of Chemistry, Environment and Feed Hygiene, SE-751 89 Uppsala, Sweden
| | - Hans Lennernäs
- Department of Pharmacy, Biopharmaceutic Research Group, Uppsala University, Box 580, SE-751 23 Uppsala, Sweden
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Godse KV, Nadkarni NJ, Jani G, Ghate S. Fexofenadine in higher doses in chronic spontaneous urticaria. Indian Dermatol Online J 2012; 1:45-6. [PMID: 23130196 PMCID: PMC3481404 DOI: 10.4103/2229-5178.73262] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Kiran V Godse
- Department of Skin, Rajawadi Hospital, Ghatkopar, Mumbai, India
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Godse KV, Zawar V, Krupashankar D, Girdhar M, Kandhari S, Dhar S, Ghosh S, Rajagopalan M, Zuberbier T. Consensus statement on the management of urticaria. Indian J Dermatol 2012; 56:485-9. [PMID: 22121259 PMCID: PMC3221204 DOI: 10.4103/0019-5154.87119] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This consensus statement was developed by Special Interest Group – Urticaria (IADVL). Urticaria, a heterogeneous group of diseases, often cannot be recognized by its morphology. Due to non-specific and non-affordable diagnosis, management of urticaria, especially chronic urticaria, is very challenging. This guideline includes definition, causes, classification and management of urticaria. Urticaria has a profound impact on the quality of life and causes immense distress to patients, necessitating effective treatment. One approach to manage urticaria is identification and elimination of the underlying cause(s) and/or eliciting trigger(s), while the second one is treatment aimed at providing symptomatic relief. This guideline recommends use of second-generation non-sedating H1 antihistamines as the first-line treatment. The dose can be increased up to four times to meet the expected results. In case patients still do not respond, appropriate treatment options can be selected depending on the cost.
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Affiliation(s)
- Kiran V Godse
- Form the Shree Skin Centre & Pathology Laboratory, Nerul, Navi Mumbai, India
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Eikel D, Vavrek M, Smith S, Bason C, Yeh S, Korfmacher WA, Henion JD. Liquid extraction surface analysis mass spectrometry (LESA-MS) as a novel profiling tool for drug distribution and metabolism analysis: the terfenadine example. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:3587-96. [PMID: 22095508 DOI: 10.1002/rcm.5274] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Liquid extraction surface analysis mass spectrometry (LESA-MS) is a novel surface profiling technique that combines micro-liquid extraction from a solid surface with nano-electrospray mass spectrometry. One potential application is the examination of the distribution of drugs and their metabolites by analyzing ex vivo tissue sections, an area where quantitative whole body autoradiography (QWBA) is traditionally employed. However, QWBA relies on the use of radiolabeled drugs and is limited to total radioactivity measured whereas LESA-MS can provide drug- and metabolite-specific distribution information. Here, we evaluate LESA-MS, examining the distribution and biotransformation of unlabeled terfenadine in mice and compare our findings to QWBA, whole tissue LC/MS/MS and MALDI-MSI. The spatial resolution of LESA-MS can be optimized to ca. 1 mm on tissues such as brain, liver and kidney, also enabling drug profiling within a single organ. LESA-MS can readily identify the biotransformation of terfenadine to its major, active metabolite fexofenadine. Relative quantification can confirm the rapid absorption of terfendine after oral dosage, its extensive first pass metabolism and the distribution of both compounds into systemic tissues such as muscle, spleen and kidney. The elimination appears to be consistent with biliary excretion and only trace levels of fexofenadine could be confirmed in brain. We found LESA-MS to be more informative in terms of drug distribution than a comparable MALDI-MS imaging study, likely due to its favorable overall sensitivity due to the larger surface area sampled. LESA-MS appears to be a useful new profiling tool for examining the distribution of drugs and their metabolites in tissue sections.
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