Crystalline adduct of moxifloxacin with trans-cinnamic acid to reduce the aqueous solubility and dissolution rate for improved residence time in the lungs
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Crystalline adduct of moxifloxacin with trans-cinnamic acid to reduce the aqueous solubility and dissolution rate for improved residence time in the lungs. / Eedara, Basanth Babu; Tucker, Ian G.; Zujovic, Zoran D.; Rades, Thomas; Price, Jason R.; Das, Shyamal C.
In: European Journal of Pharmaceutical Sciences, Vol. 136, 104961, 2019.Research output: Contribution to journal › Journal article › peer-review
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T1 - Crystalline adduct of moxifloxacin with trans-cinnamic acid to reduce the aqueous solubility and dissolution rate for improved residence time in the lungs
AU - Eedara, Basanth Babu
AU - Tucker, Ian G.
AU - Zujovic, Zoran D.
AU - Rades, Thomas
AU - Price, Jason R.
AU - Das, Shyamal C.
PY - 2019
Y1 - 2019
N2 - A crystalline adduct of the anti-tubercular drug, moxifloxacin and trans-cinnamic acid (1:1 molar ratio (MCA1:1)) was prepared to prolong the residence time of the drug in the lungs by reducing its solubility and dissolution rate. Whether the adduct is a salt or cocrystal has not been unequivocally determined. Equilibrium solubility and intrinsic dissolution rate measurements for the adduct (MCA1:1) in phosphate buffered saline (PBS, pH 7.4) revealed a significant decrease in the solubility of moxifloxacin (from 17.68 ± 0.85 mg mL−1 to 6.10 ± 0.05 mg mL−1) and intrinsic dissolution rate (from 0.47 ± 0.04 mg cm−2 min−1 to 0.14 ± 0.03 mg cm−2 min−1) compared to the supplied moxifloxacin. The aerosolization behaviour of the adduct from an inhaler device, Aerolizer®, using a Next Generation Impactor showed a fine particle fraction of 30.4 ± 1.2%. The dissolution behaviour of the fine particle dose of respirable particles collected was assessed in a small volume of stationary mucus fluid using a custom-made dissolution apparatus. The respirable adduct particles showed a lower dissolution (microscopic observation) and permeation compared to the supplied moxifloxacin. The crystalline adduct MCA1:1 has a lower solubility and dissolution rate than moxifloxacin and could improve the local residence time and therapeutic action of moxifloxacin in the lungs.
AB - A crystalline adduct of the anti-tubercular drug, moxifloxacin and trans-cinnamic acid (1:1 molar ratio (MCA1:1)) was prepared to prolong the residence time of the drug in the lungs by reducing its solubility and dissolution rate. Whether the adduct is a salt or cocrystal has not been unequivocally determined. Equilibrium solubility and intrinsic dissolution rate measurements for the adduct (MCA1:1) in phosphate buffered saline (PBS, pH 7.4) revealed a significant decrease in the solubility of moxifloxacin (from 17.68 ± 0.85 mg mL−1 to 6.10 ± 0.05 mg mL−1) and intrinsic dissolution rate (from 0.47 ± 0.04 mg cm−2 min−1 to 0.14 ± 0.03 mg cm−2 min−1) compared to the supplied moxifloxacin. The aerosolization behaviour of the adduct from an inhaler device, Aerolizer®, using a Next Generation Impactor showed a fine particle fraction of 30.4 ± 1.2%. The dissolution behaviour of the fine particle dose of respirable particles collected was assessed in a small volume of stationary mucus fluid using a custom-made dissolution apparatus. The respirable adduct particles showed a lower dissolution (microscopic observation) and permeation compared to the supplied moxifloxacin. The crystalline adduct MCA1:1 has a lower solubility and dissolution rate than moxifloxacin and could improve the local residence time and therapeutic action of moxifloxacin in the lungs.
KW - Crystalline adduct
KW - Dissolution
KW - Moxifloxacin
KW - Respirable particle
KW - Solubility
KW - Trans-cinnamic acid
KW - Tuberculosis
U2 - 10.1016/j.ejps.2019.104961
DO - 10.1016/j.ejps.2019.104961
M3 - Journal article
C2 - 31220546
AN - SCOPUS:85067616135
VL - 136
JO - Norvegica Pharmaceutica Acta
JF - Norvegica Pharmaceutica Acta
SN - 0928-0987
M1 - 104961
ER -
ID: 241099472