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Maeda Y, Teraoka H, Okada A, Yamamoto M, Natsuyama S, Hieda Y, Nagatsuka Y, Sato Y, Goromaru T, Murakami T. Development and Evaluation of EDTA-Treated Rabbits for Bioavailability Study of Chelating Drugs Using Levofloxacin, Ciprofloxacin, Hemiacetal Ester Prodrugs, and Tetracycline. Pharmaceutics 2023; 15:1589. [PMID: 37376038 DOI: 10.3390/pharmaceutics15061589] [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: 04/26/2023] [Revised: 05/17/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023] Open
Abstract
Laboratory rabbits are fed foods rich with cationic metals, and while fasting cannot empty gastric contents because of their coprophagic habits. This implies that, in rabbits, the oral bioavailability of chelating drugs could be modulated by the slow gastric emptying rates and the interaction (chelation, adsorption) with gastric metals. In the present study, we tried to develop a rabbit model with low amounts of cationic metals in the stomach for preclinical oral bioavailability studies of chelating drugs. The elimination of gastric metals was achieved by preventing food intake and coprophagy and administering a low concentration of EDTA 2Na solution one day before experiments. Control rabbits were fasted but coprophagy was not prevented. The efficacy of rabbits treated with EDTA 2Na was evaluated by comparing the gastric contents, gastric metal contents and gastric pH between EDTA-treated and control rabbits. The treatment with more than 10 mL of 1 mg/mL EDTA 2Na solution decreased the amounts of gastric contents, cationic metals and gastric pH, without causing mucosal damage. The absolute oral bioavailabilities (mean values) of levofloxacin (LFX), ciprofloxacin (CFX) and tetracycline hydrochloride (TC), chelating antibiotics, were significantly higher in EDTA-treated rabbits than those in control rabbits as follows: 119.0 vs. 87.2%, 9.37 vs. 13.7%, and 4.90 vs. 2.59%, respectively. The oral bioavailabilities of these drugs were significantly decreased when Al(OH)3 was administered concomitantly in both control and EDTA-treated rabbits. In contrast, the absolute oral bioavailabilities of ethoxycarbonyl 1-ethyl hemiacetal ester (EHE) prodrugs of LFX and CFX (LFX-EHE, CFX-EHE), which are non-chelating prodrugs at least in in vitro condition, were comparable between control and EDTA-treated rabbits irrespective of the presence of Al(OH)3, although some variation was observed among rabbits. The oral bioavailabilities of LFX and CFX from their EHE prodrugs were comparable with LFX and CFX alone, respectively, even in the presence of Al(OH)3. In conclusion, LFX, CFX and TC exhibited higher oral bioavailabilities in EDTA-treated rabbits than in control rabbits, indicating that the oral bioavailabilities of these chelating drugs are reduced in untreated rabbits. In conclusion, EDTA-treated rabbits were found to exhibit low gastric contents including metals and low gastric pH, without causing mucosal damage. Ester prodrug of CFX was effective in preventing chelate formation with Al(OH)3 in vitro and in vivo, as well as in the case of ester prodrugs of LFX. EDTA-treated rabbits are expected to provide great advantages in preclinical oral bioavailability studies of various drugs and dosage formulations. However, a marked interspecies difference was still observed in the oral bioavailability of CFX and TC between EDTA-treated rabbits and humans, possibly due to the contribution of adsorptive interaction in rabbits. Further study is necessary to seek out the usefulness of the EDTA-treated rabbit with less gastric contents and metals as an experimental animal.
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Affiliation(s)
- Yorinobu Maeda
- Laboratory of Drug Information Analytics, Faculty of Pharmacy & Pharmaceutical Sciences, Fukuyama University, Hiroshima 729-0292, Japan
| | - Honoka Teraoka
- Laboratory of Drug Information Analytics, Faculty of Pharmacy & Pharmaceutical Sciences, Fukuyama University, Hiroshima 729-0292, Japan
| | - Ami Okada
- Laboratory of Drug Information Analytics, Faculty of Pharmacy & Pharmaceutical Sciences, Fukuyama University, Hiroshima 729-0292, Japan
| | - Mirei Yamamoto
- Laboratory of Drug Information Analytics, Faculty of Pharmacy & Pharmaceutical Sciences, Fukuyama University, Hiroshima 729-0292, Japan
| | - Shintaro Natsuyama
- Laboratory of Drug Information Analytics, Faculty of Pharmacy & Pharmaceutical Sciences, Fukuyama University, Hiroshima 729-0292, Japan
| | - Yuhzo Hieda
- Common Resources Center, Faculty of Pharmacy & Pharmaceutical Sciences, Fukuyama University, Hiroshima 729-0292, Japan
| | - Yuka Nagatsuka
- Laboratory of Clinical Evaluation of Drug Efficacy, Faculty of Pharmacy & Pharmaceutical Sciences, Fukuyama University, Hiroshima 729-0292, Japan
| | - Yuhki Sato
- Laboratory of Clinical Evaluation of Drug Efficacy, Faculty of Pharmacy & Pharmaceutical Sciences, Fukuyama University, Hiroshima 729-0292, Japan
| | - Takeshi Goromaru
- Laboratory of Drug Information Analytics, Faculty of Pharmacy & Pharmaceutical Sciences, Fukuyama University, Hiroshima 729-0292, Japan
| | - Teruo Murakami
- Faculty of Pharmaceutical Sciences, Hiroshima International University, Hiroshima 739-2631, Japan
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Hamdan A, Kasabri V, Al‐Hiari Y, Arabiyat S, AlAlawi S, Bustanji Y. Dual anti‐inflammatory and antiglycation propensities of a potentially novel class of functionalized fluoroquinolones. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3807] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Alaa Hamdan
- School of PharmacyThe University of Jordan Queen Rania Street Amman 11942 Jordan
| | - Violet Kasabri
- School of PharmacyThe University of Jordan Queen Rania Street Amman 11942 Jordan
| | - Yusuf Al‐Hiari
- School of PharmacyThe University of Jordan Queen Rania Street Amman 11942 Jordan
| | | | - Sundus AlAlawi
- School of PharmacyThe University of Jordan Queen Rania Street Amman 11942 Jordan
| | - Yasser Bustanji
- School of PharmacyThe University of Jordan Queen Rania Street Amman 11942 Jordan
- Hamdi Mango Center for Scientific ResearchUniversity of Jordan Amman Jordan
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Matsuyama K. Development of a Prodrug of Levofloxacin to Avoid Chelation with Al 3+ and of Pemetrexed Dimedoxomil Esters for Oral Administration. YAKUGAKU ZASSHI 2017; 137:1087-1094. [PMID: 28867695 DOI: 10.1248/yakushi.17-00095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An ethoxycarbonyl 1-ethyl hemiacetal ester of levofloxacin (LVFX-EHE) avoids insoluble chelate formation with metal-containing drugs in the intestinal tract and is rapidly hydrolyzed to the parent drug. Furthermore, the minimum inhibitory concentration confirms that LVFX-EHE is less likely to cause pseudomembranous colitis because of less susceptibility to normal intestinal bacteria flora. Pemetrexed dimedoxomil, the prodrug of pemetrexed, was synthesized via reaction with medoxomil bromide after modification of L-glutamate with the tert-butyloxycarbonyl protecting group (BOC), followed by hydrolysis of the BOC moiety with trifluoroacetic acid (TFA) in CH2Cl2 at a temperature of 0°C for 2 h. A serum pemetrexed concentration of >2 μg/mL was observed after oral administration of pemetrexed dimedoxomil at a dose of 60 mg/kg to rats.
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Affiliation(s)
- Kenji Matsuyama
- Department of Pharmacy, Faculty of Pharmacy, Kindai University
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