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Nomura M, Tomita J, Itakura S, Todo H, Kodama N, Inoue Y. Study of the preparation, characterization, and solubility of lidocaine complexed with 5-sulfosalicylic acid dihydrate. Drug Dev Ind Pharm 2024:1-11. [PMID: 39030701 DOI: 10.1080/03639045.2024.2382396] [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: 04/26/2024] [Revised: 06/04/2024] [Accepted: 07/16/2024] [Indexed: 07/21/2024]
Abstract
OBJECTIVE This study was to prepare solid dispersions of lidocaine (Lid) with 5-sulfosalicylic acid dihydrate (SSA) by freeze-drying (freeze-dried [FD] Lid/SSA = 1/1) and to evaluate their physical properties. METHODS Here, we evaluated the physicochemical properties and solubility of solid dispersions of Lid and SSA prepared by freeze-drying (freeze-dried [FD] Lid/SSA = 1/1). RESULTS Differential scanning calorimetry measurements showed that after freeze-drying, the endothermic peak due to Lid melting, the dehydration peak, and the endothermic peak due to SSA melting disappeared. Powder X-ray diffraction results showed that the characteristic Lid and SSA peaks disappeared after freeze-drying, indicating a halo pattern. The near-infrared spectroscopy results suggested that Lid-derived -NH and -CH groups and the Lid-derived -OH and -CH groups from the SSA peak shifted and broadened after freeze-drying, suggesting their involvement in complex formation through Lid/SSA intermolecular interactions. Nuclear Overhauser effect spectroscopy-nuclear magnetic resonance (NMR) measurements showed a cross-peak due to the interaction between the Lid-derived -CH group and the SSA-derived -OH group, suggesting hydrogen bonding. Diffusion-ordered spectroscopy NMR measurements showed that the diffusion coefficients of Lid and SSA aggregated in FD Lid/SSA, suggesting a change in Lid dispersibility in the solvent owing to the formation of a complex with SSA. The solubility of FD Lid/SSA was approximately 88 mg/mL (∼20-fold higher than that of Lid). CONCLUSIONS These findings suggest that complex formation occurred in FD Lid/SSA; this enhanced the solubility of this dispersion.
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Affiliation(s)
- Manami Nomura
- Laboratory of Nutri-Pharmacotherapeutics Management, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Sakado, Japan
| | - Junki Tomita
- Instrument Analysis Center, Josai University, Sakado, Japan
| | - Shoko Itakura
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Hiroaki Todo
- Laboratory of Pharmaceutics and Cosmeceutics, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Saitama, Japan
| | - Nao Kodama
- Laboratory of Nutri-Pharmacotherapeutics Management, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Sakado, Japan
| | - Yutaka Inoue
- Laboratory of Nutri-Pharmacotherapeutics Management, Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Sakado, Japan
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Garbiec E, Rosiak N, Zalewski P, Tajber L, Cielecka-Piontek J. Genistein Co-Amorphous Systems with Amino Acids: An Investigation into Enhanced Solubility and Biological Activity. Pharmaceutics 2023; 15:2653. [PMID: 38139995 PMCID: PMC10747361 DOI: 10.3390/pharmaceutics15122653] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/07/2023] [Accepted: 11/15/2023] [Indexed: 12/24/2023] Open
Abstract
Genistein, an isoflavone known for its antioxidant and antidiabetic effects, suffers from the drawback of low solubility. To overcome this limitation, co-amorphous systems were synthesized by incorporating amino acids that were chosen through computational methods. The confirmation of the amorphous state of lysine and arginine-containing systems was ascertained by X-ray powder diffraction. Subsequently, the characterization of these systems was extended by employing thermo-gravimetry, differential scanning calorimetry, Fourier-transform infrared spectroscopy, and scanning electron microscopy. The investigation also included an assessment of the physical stability of the samples during storage. The apparent solubility of the systems was studied in an aqueous medium. To evaluate the in vitro permeability through the gastrointestinal tract, the parallel artificial membrane permeability assay was employed. The biological properties of the systems were assessed with regard to their antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl and cupric ion-reducing antioxidant capacity assays, as well as their ability to inhibit α-glucosidase. The systems' glass transition temperatures were determined, and their homogeneity confirmed via differential scanning calorimetry analysis, while Fourier-transform infrared spectroscopy analysis provided data on molecular interactions. Stability was maintained for the entire 6-month storage duration. The co-amorphous system containing lysine displayed the most pronounced apparent solubility improvement, as well as a significant enhancement in antioxidant activity. Notably, both systems demonstrated superior α-glucosidase inhibition relative to acarbose, a standard drug for managing type 2 diabetes. The results indicate that co-amorphous systems with lysine and arginine have the potential to significantly enhance the solubility and biological activity of genistein.
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Affiliation(s)
- Ewa Garbiec
- Department of Pharmacognosy and Biomaterials, Poznan University of Medical Sciences, 3 Rokietnicka St., 60-806 Poznan, Poland; (E.G.); (N.R.); (P.Z.)
| | - Natalia Rosiak
- Department of Pharmacognosy and Biomaterials, Poznan University of Medical Sciences, 3 Rokietnicka St., 60-806 Poznan, Poland; (E.G.); (N.R.); (P.Z.)
| | - Przemysław Zalewski
- Department of Pharmacognosy and Biomaterials, Poznan University of Medical Sciences, 3 Rokietnicka St., 60-806 Poznan, Poland; (E.G.); (N.R.); (P.Z.)
| | - Lidia Tajber
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, University of Dublin, D02 PN40 Dublin, Ireland;
| | - Judyta Cielecka-Piontek
- Department of Pharmacognosy and Biomaterials, Poznan University of Medical Sciences, 3 Rokietnicka St., 60-806 Poznan, Poland; (E.G.); (N.R.); (P.Z.)
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Lin WJ, Shi WP, Ge WY, Chen LL, Guo WH, Shang P, Yin DC. Magnetic Fields Reduce Apoptosis by Suppressing Phase Separation of Tau-441. RESEARCH (WASHINGTON, D.C.) 2023; 6:0146. [PMID: 37228640 PMCID: PMC10204748 DOI: 10.34133/research.0146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 04/21/2023] [Indexed: 05/27/2023]
Abstract
The biological effects of magnetic fields (MFs) have been a controversial issue. Fortunately, in recent years, there has been increasing evidence that MFs do affect biological systems. However, the physical mechanism remains unclear. Here, we show that MFs (16 T) reduce apoptosis in cell lines by inhibiting liquid-liquid phase separation (LLPS) of Tau-441, suggesting that the MF effect on LLPS may be one of the mechanisms for understanding the "mysterious" magnetobiological effects. The LLPS of Tau-441 occurred in the cytoplasm after induction with arsenite. The phase-separated droplets of Tau-441 recruited hexokinase (HK), resulting in a decrease in the amount of free HK in the cytoplasm. In cells, HK and Bax compete to bind to the voltage-dependent anion channel (VDAC I) on the mitochondrial membrane. A decrease in the number of free HK molecules increased the chance of Bax binding to VDAC I, leading to increased Bax-mediated apoptosis. In the presence of a static MF, LLPS was marked inhibited and HK recruitment was reduced, resulting in an increased probability of HK binding to VDAC I and a decreased probability of Bax binding to VDAC I, thus reducing Bax-mediated apoptosis. Our findings revealed a new physical mechanism for understanding magnetobiological effects from the perspective of LLPS. In addition, these results show the potential applications of physical environments, such as MFs in this study, in the treatment of LLPS-related diseases.
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Xi Z, Fei Y, Wang Y, Lin Q, Ke Q, Feng G, Xu L. Solubility improvement of curcumin by crystallization inhibition from polymeric surfactants in amorphous solid dispersions. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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Su Y, Shi D, Xiong B, Xu Y, Hu Q, Huang H, Yang J, Yu C. Solid-State Forms of Koumine Hydrochloride: Phase Transformations and the Crystal Structure and Properties of the Stable Form. ACS OMEGA 2022; 7:29692-29701. [PMID: 36061709 PMCID: PMC9434794 DOI: 10.1021/acsomega.2c02175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
To investigate the solid-state forms of koumine hydrochloride (KMY), solid form screening was performed, and one amorphous form and five crystalline forms (forms A, B, C, D, and E) were identified by powder X-ray diffraction. Form A was the dominant crystal product, and its crystal structure and packing pattern were determined by single-crystal X-ray diffraction. The crystals displayed an orthorhombic crystal system and symmetry of space group P212121 with Z' = 1. The amorphous form transformed to form A at 105-120 °C or 75% RH, while forms B, C, D, and E could only be intermediate phases and readily transformed to form A at room temperature. Therefore, the phase transformations of KMY solid-state forms were established. The properties of the amorphous form and form A were further elucidated by applying vibrational spectroscopy, moisture sorption analysis, and thermal analysis. Accordingly, form A, the KMY anhydrate, was found to be the thermodynamically stable form with low hygroscopicity under ambient conditions. These characteristics are crucial in the manufacture and storage of active pharmaceutical ingredients.
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Affiliation(s)
- Yanping Su
- School
of Pharmacy, Fujian Medical University, Fuzhou 350122, Fujian, People’s Republic of China
- Fujian
Key Laboratory of Drug Target Discovery and Structural and Functional
Research, School of Pharmacy, Fujian Medical
University, Fuzhou 350122, Fujian, People’s Republic of
China
| | - Dongmei Shi
- School
of Pharmacy, Fujian Medical University, Fuzhou 350122, Fujian, People’s Republic of China
| | - Bojun Xiong
- School
of Pharmacy, Fujian Medical University, Fuzhou 350122, Fujian, People’s Republic of China
| | - Ying Xu
- School
of Pharmacy, Fujian Medical University, Fuzhou 350122, Fujian, People’s Republic of China
| | - Qing Hu
- School
of Pharmacy, Fujian Medical University, Fuzhou 350122, Fujian, People’s Republic of China
- Fujian
Key Laboratory of Drug Target Discovery and Structural and Functional
Research, School of Pharmacy, Fujian Medical
University, Fuzhou 350122, Fujian, People’s Republic of
China
| | - Huihui Huang
- School
of Pharmacy, Fujian Medical University, Fuzhou 350122, Fujian, People’s Republic of China
- Fujian
Key Laboratory of Drug Target Discovery and Structural and Functional
Research, School of Pharmacy, Fujian Medical
University, Fuzhou 350122, Fujian, People’s Republic of
China
| | - Jian Yang
- School
of Pharmacy, Fujian Medical University, Fuzhou 350122, Fujian, People’s Republic of China
| | - Changxi Yu
- School
of Pharmacy, Fujian Medical University, Fuzhou 350122, Fujian, People’s Republic of China
- Fujian
Key Laboratory of Drug Target Discovery and Structural and Functional
Research, School of Pharmacy, Fujian Medical
University, Fuzhou 350122, Fujian, People’s Republic of
China
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