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Santanatoglia A, Caprioli G, Ricciutelli M, Vittori S, Angeloni S. Quantification of two derivatives of malic acid first-time discovered in coffee: Influence of postharvest processing method. Food Chem 2024; 460:140644. [PMID: 39089042 DOI: 10.1016/j.foodchem.2024.140644] [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: 04/29/2024] [Revised: 06/15/2024] [Accepted: 07/24/2024] [Indexed: 08/03/2024]
Abstract
This study quantified, for the first time, 2-isopropylmalic and 3-isopropylmalic acids, in green, roasted and espresso coffee by UHPLC-MS/MS. Moreover, it reports the influence of postharvest processing methods (natural, washed and honey) on their content. New extraction techniques were developed and validated from three coffee matrices (green, roasted and espresso). Honey coffee exhibited levels substantially higher of 2-isopropylmalic acid than those processed by natural and washed methods (p < 0.05). Specifically, 2-isopropylmalic acid levels in honey green, roasted and espresso coffee samples were 48.24 ± 7.31 ng/g, 168.8 ± 10.88 ng/g and 177.5 ± 9.49 ng/g, respectively. This research highlights the significant impact of processing methods on the chemical profile of coffee and introduces 2-isopropylmalic and 3-isopropylmalic acids as potential quality indicators. Moreover, it suggests that the fermentation stage during processing may play a crucial role in their formation, laying the foundation for optimizing coffee processing to enhance quality.
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Affiliation(s)
- Agnese Santanatoglia
- Chemistry Interdisciplinary Project (ChIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri s.n.c., 62032 Camerino, Italy; Research and Innovation Coffee Hub, Via Emilio Betti 1, 62020 Belforte del Chienti, Italy
| | - Giovanni Caprioli
- Chemistry Interdisciplinary Project (ChIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri s.n.c., 62032 Camerino, Italy.
| | - Massimo Ricciutelli
- Chemistry Interdisciplinary Project (ChIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri s.n.c., 62032 Camerino, Italy
| | - Sauro Vittori
- Chemistry Interdisciplinary Project (ChIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri s.n.c., 62032 Camerino, Italy; Research and Innovation Coffee Hub, Via Emilio Betti 1, 62020 Belforte del Chienti, Italy
| | - Simone Angeloni
- Chemistry Interdisciplinary Project (ChIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri s.n.c., 62032 Camerino, Italy
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2
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Kulkarni VR, Bashyal S, Nair VV, Duggal I, Maniruzzaman M. Single-Step Extrusion Process for Formulation Development of Self-Emulsifying Granules for Oral Delivery of a BCS Class IV Drug. Mol Pharm 2024. [PMID: 39377300 DOI: 10.1021/acs.molpharmaceut.4c00199] [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: 10/09/2024]
Abstract
This study aimed to develop and optimize formulations containinga BCS Class IV drug by improving its solubility and permeability. Herein development of self-emulsifying solid lipid matrices was investigated as carrier systems for a BCS Class IV model drug. Self-emulsifying drug delivery systems (SEDDS) have been extensively investigated for formulating drugs with poor water solubility. However, manufacturing SEDDS is challenging. These systems usually have low drug-loading capacities, and the incorporated drugs tend to recrystallize during storage, which severely impacts the storage stability in vitro and performance in vivo. Moreover, they require greater amounts (>80%) of lipid carriers, cosolvents, surfactants, and other excipients to keep them from recrystallizing. This in turn is again challenging for high-dose drugs as it affects the size of the final drug product (tablets and capsules). Also, the final liquid nature of the formulation affects the handling and processability of the formulation, which poses challenges during the manufacturing and packaging steps. In this work, we have studied the feasibility of a single-step extrusion process to formulate and optimize solid self-emulsifying granules with a relatively higher drug loading of Ritonavir (RTV), a BCS Class IV drug. Further, we have compared the performance of using these granules as the feedstock for direct powder extrusion-based 3D printing as opposed to the use of physical blends. The stability and solubility-permeability advantage of these granules was also evaluated where SEDDS showed about 27 and 20 fold increase in apparent solublity and permeability compared to bulk drug, respectively. Combining the capabilities of HME to form drug-loaded homogeneous granules as a continuous process along with application of direct printing extruiosn (DPE) 3D printing improves the drug delivery prospects for such candidates.
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Affiliation(s)
- Vineet R Kulkarni
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Santosh Bashyal
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Varsha V Nair
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Ishaan Duggal
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Mohammed Maniruzzaman
- Pharmaceutical Engineering and 3D Printing (PharmE3D) Lab, Department of Pharmaceutics and Drug Delivery, School of Pharmacy, University of Mississippi, University, Mississippi 38677, United States
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3
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Polyzois H, Nguyen HT, Roberto de Alvarenga Junior B, Taylor LS. Amorphous Solid Dispersion Formation for Enhanced Release Performance of Racemic and Enantiopure Praziquantel. Mol Pharm 2024; 21:5285-5296. [PMID: 39292641 DOI: 10.1021/acs.molpharmaceut.4c00711] [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: 09/20/2024]
Abstract
Praziquantel (PZQ) is the treatment of choice for schistosomiasis, which affects more than 250 million people globally. Commercial tablets contain the crystalline racemic compound (RS-PZQ) which limits drug dissolution and oral bioavailability and can lead to unwanted side effects and poor patient compliance due to the presence of the S-enantiomer. While many approaches have been explored for improving PZQ's dissolution and oral bioavailability, studies focusing on investigating its release from amorphous solid dispersions (ASDs) have been limited. In this work, nucleation induction time experiments were performed to identify suitable polymers for preparing ASDs using RS-PZQ and R-PZQ, the therapeutically active enantiomer. Cellulose-based polymers, hydroxypropyl methylcellulose acetate succinate (HPMCAS, MF grade) and hydroxypropyl methylcellulose (HPMC, E5 LV grade), were the best crystallization inhibitors for RS-PZQ in aqueous media and were selected for ASD preparation using solvent evaporation (SE) and hot-melt extrusion (HME). ASDs prepared experimentally were subjected to X-ray powder diffraction to verify their amorphous nature and a selected number of ASDs were monitored and found to remain physically stable following several months of storage under accelerated-stability testing conditions. SE HPMCAS-MF ASDs of RS-PZQ and R-PZQ showed faster release than HPMC E5 LV ASDs and maintained good performance with an increase in drug loading (DL). HME ASDs of RS-PZQ formulated using HPMCAS-MF exhibited slightly enhanced release compared to that of SE ASDs. SE HPMCAS-MF ASDs showed a maximum release increase of the order of 6 times compared to generic and branded (Biltricide) PZQ tablets. More importantly, SE R-PZQ ASDs with HPMCAS-MF released the drug as effectively as RS-PZQ or better, depending on the DL used. These findings have significant implications for the development of commercial PZQ formulations comprised solely of the R-enantiomer, which can result in mitigation of the biopharmaceutical and compliance issues associated with current commercial tablets.
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Affiliation(s)
- Hector Polyzois
- Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
| | - Hanh Thuy Nguyen
- Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
| | | | - Lynne S Taylor
- Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States
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4
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Zhang W, Thool P, Weitz BW, Hou HH. Investigating the Effects of Formulation Variables on the Disintegration of Spray Dried Amorphous Solid Dispersion Tablets. J Pharm Sci 2024:S0022-3549(24)00432-5. [PMID: 39374694 DOI: 10.1016/j.xphs.2024.09.024] [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: 07/18/2024] [Revised: 09/24/2024] [Accepted: 09/25/2024] [Indexed: 10/09/2024]
Abstract
Amorphous solid dispersion (ASD) tablets based on hydrophilic polymer carriers may encounter disintegration challenges. In this work, the effect of different formulation composition variables on the ASD tablet disintegration performance was systematically studied. GDC-0334: copovidone (PVPVA) 60: 40 ASD prepared by spray drying was selected as the model ASD system. The effects of ASD loading, filler type and ratio, disintegrant type and level were then investigated using tablets made by direct compression process. Tablet disintegration time increased with the increase of ASD loading, especially when ASD loading exceeded 50%. At the same tablet solid fraction, when lactose was used as the soluble filler, faster tablet disintegration time was observed compared to the tablets with mannitol as the soluble filler. Among the three tested disintegrants, croscarmellose sodium performed the best in facilitating the ASD tablet disintegration, followed by sodium starch glycolate, and crospovidone was the poorest. When croscarmellose sodium was used as the disintegrant, 5% level was sufficient to enable ASD tablet disintegration at 60% ASD loading and further increase of croscarmellose sodium level to 8% did not provide additional benefit. Water uptake experiments were performed on selected tablets and the results demonstrated a positive correlation with tablet disintegration time, indicating water penetration is a major contributing step for the disintegration of our ASD tablets. Overall, this work provides a rationale for excipient selection and insights into building a platform formulation approach for developing immediate-release ASD tablets.
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Affiliation(s)
- Wei Zhang
- Synthetic Molecule Pharmaceutical Sciences, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, U.S.A..
| | - Prajwal Thool
- Synthetic Molecule Pharmaceutical Sciences, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, U.S.A
| | - Benjamin W Weitz
- Synthetic Molecule Pharmaceutical Sciences, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, U.S.A
| | - Hao Helen Hou
- Synthetic Molecule Pharmaceutical Sciences, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, U.S.A..
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Sharma M, Bains A, Goksen G, Dhull SB, Ali N, Rashid S, Elossaily GM, Chawla P. A review of valorization of agricultural waste for the synthesis of cellulose membranes: Separation of organic, inorganic, and microbial pollutants. Int J Biol Macromol 2024; 277:134170. [PMID: 39067731 DOI: 10.1016/j.ijbiomac.2024.134170] [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: 04/02/2024] [Revised: 07/17/2024] [Accepted: 07/24/2024] [Indexed: 07/30/2024]
Abstract
Agricultural waste presents a significant environmental challenge due to improper disposal and management practices, contributing to soil degradation, biodiversity loss, and pollution of water and air resources. To address these issues, there is a growing emphasis on the valorization of agricultural waste. Cellulose, a major component of agricultural waste, offers promising opportunities for resource utilization due to its unique properties, including biodegradability, biocompatibility, and renewability. Thus, this review explored various types of agricultural waste, their chemical composition, and pretreatment methods for cellulose extraction. It also highlights the significance of rice straw, sugarcane bagasse, and other agricultural residues as cellulose-rich resources. Among the various membrane fabrication techniques, phase inversion is highly effective for creating porous membranes with controlled thickness and uniformity, while electrospinning produces nanofibrous membranes with high surface area and exceptional mechanical properties. The review further explores the separation of pollutants including using cellulose membranes, demonstrating their potential in environmental remediation. Hence, by valorizing agricultural residues into functional materials, this approach addresses the challenge of agricultural waste management and contributes to the development of innovative solutions for pollution control and water treatment.
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Affiliation(s)
- Madhu Sharma
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab 144411, India
| | - Aarti Bains
- Department of Microbiology, Lovely Professional University, Phagwara, Punjab 144411, India
| | - Gulden Goksen
- Department of Food Technology, Vocational School of Technical Sciences at Mersin Tarsus Organized Industrial Zone, Tarsus University, 33100 Mersin, Turkey.
| | - Sanju Bala Dhull
- Department of Food Science and Technology, Chaudhary Devi Lal University, Sirsa, Haryana 125055, India
| | - Nemat Ali
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Summya Rashid
- Department of Pharmacology & Toxicology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia.
| | - Gehan M Elossaily
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, P.O. Box 71666, Riyadh 11597, Saudi Arabia
| | - Prince Chawla
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab 144411, India.
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Chen X, Qin Y, Wang L, Zhu Y, Zhang H, Liu W, Zeng M, Dai Q. Co-amorphous systems of sulfasalazine with matrine-type alkaloids: Enhanced solubility behaviors and synergistic therapeutic potential. Eur J Pharm Biopharm 2024; 203:114475. [PMID: 39216557 DOI: 10.1016/j.ejpb.2024.114475] [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: 06/03/2024] [Revised: 08/15/2024] [Accepted: 08/25/2024] [Indexed: 09/04/2024]
Abstract
Sulfasalazine (SULF), a sulfonamide antibiotic, has been utilized in the treatment of rheumatoid arthritis (RA) and inflammatory bowel disease (IBD) since its discovery. However, its poor water solubility causes the high daily doses (1---3 g) for patients, which may lead to the intolerable toxic and side effects for their lifelong treatment for RA and IBD. In this work, two water-soluble natural anti-inflammatory alkaloids, matrine (MAR) and sophoridine (SPD), were employed to construct the co-amorphous systems of SULF for addressing its solubility issue. These newly obtained co-amorphous forms of SULF were comprehensively characterized by powder X-ray diffraction (PXRD), temperature-modulated differential scanning calorimetry (mDSC), Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). We also investigated their dissolution behavior, including powder dissolution, in vitro release, and intrinsic dissolution rate. Both co-amorphous systems exhibited superior dissolution performance compared to crystalline SULF. The underlying mechanism responsible for the enhanced dissolution behaviors in co-amorphous systems were also elucidated. These mechanisms include the inhibition of nucleation, complexation, increased hydrophilicity, and robust intermolecular interactions in aqueous solutions. Importantly, these co-amorphous systems demonstrated satisfactory physical stability under various storage conditions. Network pharmacological analysis was utilized to investigate the potential therapeutic targets of both co-amorphous systems against RA, revealing similar yet distinct multi-target synergistic therapeutic mechanisms in the treatment of this condition. Our study suggests these drug-drug co-amorphous systems hold promise for optimizing SULF dosage in the future and providing a potential drug combination strategy.
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Affiliation(s)
- Xin Chen
- Innovation Centre for Science and Technology, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China.
| | - Yirui Qin
- Innovation Centre for Science and Technology, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China; Institute of Rheumatology and Immunology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
| | - Lijun Wang
- Innovation Centre for Science and Technology, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China; Institute of Rheumatology and Immunology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
| | - Yujing Zhu
- Laboratory of Pharmaceutical Solid-State Chemistry, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China
| | - Hailu Zhang
- Laboratory of Pharmaceutical Solid-State Chemistry, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China; Interdisciplinary Institute of NMR and Molecular Sciences (NMR-X), School of Chemistry and Chemical Engineering, State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, P. R. China
| | - Wenhu Liu
- School of Pharmacy, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China.
| | - Mei Zeng
- Innovation Centre for Science and Technology, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China; Institute of Rheumatology and Immunology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
| | - Qian Dai
- Institute of Rheumatology and Immunology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China.
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Kar A, Giri L, Kenguva G, Kumar Bommaka M, Bandi S, Dandela R. Multi-component forms of the 2nd generation H1 receptor antagonist drug, Bilastine and its enhanced physicochemical characteristics. Bioorg Chem 2024; 151:107672. [PMID: 39068718 DOI: 10.1016/j.bioorg.2024.107672] [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: 06/07/2024] [Revised: 07/10/2024] [Accepted: 07/23/2024] [Indexed: 07/30/2024]
Abstract
Bilastine (BIL) is a novel 2nd generation antihistamine medication is used to treat symptoms of chronic urticaria and allergic rhinitis. However, its poor solubility limits its therapeutic efficacy. In order to enhance the physicochemical characteristics of BIL, various molecular adducts of BIL (Salt, hydrate and co-crystal) were discovered in this study using two distinct salt-formers: Terephthalic acid (TA), 2,4-Dihydroxybenzoic acid (2,4-DHBA), and three nutraceuticals (Vanillic Acid (VA), Hydroquinone (HQN) and Hippuric acid (HA)). Various analytical methods were used to examine the synthesised adducts, including Powder X-Ray Diffraction (PXRD), Single Crystal X-ray Diffraction (SCXRD), and thermal analysis (Thermogravimetric analysis (TGA) and Differential Scanning Calorimetry (DSC)). Single-crystal X-ray diffraction (SCXRD) studies avowed that the architectures of the molecular adducts are maintained in the solid state by an array of strong (N+H⋯O-, NH⋯O, OH⋯O) and weak (CH⋯O) hydrogen bonds. Additionally, a solubility test was performed to establish the in vitro release characteristics of newly synthesised BIL adducts and it observed that most of the molecular adducts exhibit higher rates of dissolution in comparison to pure BIL; in particular, BIL.TA.HYD showed the highest solubility and the fastest rate of dissolution. Moreover, experiments on flux permeability and diffusion demonstrated that the BIL.TA.HYD and BIL.VA salts had strong permeability and a high diffusion rate. In addition, the synthesized adduct's stability was assessed at 25 °C and 90 % ± 5 % relative humidity, and it was found that all the molecular salts were stable and did not undergo any phase changes or dissociation. The foregoing result leads us to believe that the newly synthesized molecular adducts' increased permeability and solubility will be advantageous for the creation of novel BIL formulations.
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Affiliation(s)
- Ananya Kar
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology-Indian Oil Bhubaneswar Campus, Bhubaneswar, India
| | - Lopamudra Giri
- Department of Chemistry, Odisha University of Technology and Research, (Formerly CET), Bhubaneswar, India
| | - Gowtham Kenguva
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology-Indian Oil Bhubaneswar Campus, Bhubaneswar, India
| | - Manish Kumar Bommaka
- Department of Chemistry, Gokaraju Rangaraju College of Pharmacy, Nizampet Road, Bachupally, Hyderabad, Telangana 500090, India
| | - Sreenivasulu Bandi
- School of Chemical Sciences, St Joseph's University, Lalbagh Road, Bangalore, Karnataka 560027, India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology-Indian Oil Bhubaneswar Campus, Bhubaneswar, India.
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8
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Meola TR, Kamath S, Elz AS, Prestidge CA, Wignall A, Joyce P. Contrasting the pharmacokinetic performance and gut microbiota effects of an amorphous solid dispersion and lipid nanoemulsion for a poorly water-soluble anti-psychotic. Eur J Pharm Biopharm 2024; 203:114453. [PMID: 39134099 DOI: 10.1016/j.ejpb.2024.114453] [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: 04/30/2024] [Revised: 07/18/2024] [Accepted: 08/09/2024] [Indexed: 09/14/2024]
Abstract
Increasing attention is being afforded to understanding the bidirectional relationship that exists between oral drugs and the gut microbiota. Often overlooked, however, is the impact that pharmaceutical excipients exert on the gut microbiota. Subsequently, in this study, we contrasted the pharmacokinetic performance and gut microbiota interactions between two commonly employed formulations for poorly soluble compounds, namely 1) an amorphous solid dispersion (ASD) stabilised by poly(vinyl pyrrolidone) K-30, and 2) a lipid nanoemulsion (LNE) comprised of medium chain glycerides and lecithin. The poorly soluble antipsychotic, lurasidone, was formulated with ASD and LNE due to its rate-limiting dissolution, poor oral bioavailability, and significant food effect. Both the ASD and LNE were shown to facilitate lurasidone supersaturation within in vitro dissolution studies simulating the gastrointestinal environment. This translated into profound improvements in oral pharmacokinetics in rats, with the ASD and LNE exerting comparable ∼ 2.5-fold improvements in lurasidone bioavailability, compared to the pure drug. The oral formulations imparted contrasting effects on the gut microbiota, with the LNE depleting the richness and abundance of the microbial ecosystem, as evidenced through reductions in alpha diversity (Chao1 index) and operational taxonomical units (OTUs). In contrast, the ASD exerted a 'gut neutral' effect, whereby a mild enrichment of alpha diversity and OTUs was observed. Importantly, this suggests that ASDs are effective solubility-enhancing formulations that can be used without comprising the integrity of the gut microbiota - an integral consideration in the treatment of mental health disorders, such as schizophrenia, due to the role of the gut microbiota in regulating mood and cognition.
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Affiliation(s)
- Tahlia R Meola
- UniSA Clinical & Health Sciences, University of South Australia, South Australia 5000, Australia
| | - Srinivas Kamath
- Centre for Pharmaceutical Innovation (CPI), UniSA Clinical & Health Sciences, University of South Australia, South Australia 5000, Australia
| | - Aurelia S Elz
- Centre for Pharmaceutical Innovation (CPI), UniSA Clinical & Health Sciences, University of South Australia, South Australia 5000, Australia; Translational Oncology Laboratory, Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, South Australia 5000, Australia
| | - Clive A Prestidge
- Centre for Pharmaceutical Innovation (CPI), UniSA Clinical & Health Sciences, University of South Australia, South Australia 5000, Australia
| | - Anthony Wignall
- Centre for Pharmaceutical Innovation (CPI), UniSA Clinical & Health Sciences, University of South Australia, South Australia 5000, Australia
| | - Paul Joyce
- Centre for Pharmaceutical Innovation (CPI), UniSA Clinical & Health Sciences, University of South Australia, South Australia 5000, Australia.
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Shin Y, Kim M, Kim C, Jeon H, Koo J, Oh J, Shin S, Youn YS, Lim C, Oh KT. Development and Characterization of Olaparib-Loaded Solid Self-Nanoemulsifying Drug Delivery System (S-SNEDDS) for Pharmaceutical Applications. AAPS PharmSciTech 2024; 25:221. [PMID: 39317842 DOI: 10.1208/s12249-024-02927-2] [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: 05/08/2024] [Accepted: 08/26/2024] [Indexed: 09/26/2024] Open
Abstract
This study aims to enhance the solubility of Olaparib, classified as biopharmaceutical classification system (BCS) class IV due to its low solubility and bioavailability using a solid self-nanoemulsifying drug delivery system (S-SNEDDS). For this purpose, SNEDDS formulations were created using Capmul MCM as the oil, Tween 80 as the surfactant, and PEG 400 as the co-surfactant. The SNEDDS formulation containing olaparib (OLS-352), selected as the optimal formulation, showed a mean droplet size of 87.0 ± 0.4 nm and drug content of 5.53 ± 0.09%. OLS-352 also demonstrated anticancer activity against commonly studied ovarian (SK-OV-3) and breast (MCF-7) cancer cell lines. Aerosil® 200 and polyvinylpyrrolidone (PVP) K30 were selected as solid carriers, and S-SNEDDS formulations were prepared using the spray drying method. The drug concentration in S-SNEDDS showed no significant changes (98.4 ± 0.30%, 25℃) with temperature fluctuations during the 4-week period, demonstrating improved storage stability compared to liquid SNEDDS (L-SNEDDS). Dissolution tests under simulated gastric and intestinal conditions revealed enhanced drug release profiles compared to those of the raw drug. Additionally, the S-SNEDDS formulation showed a fourfold greater absorption in the Caco-2 assay than the raw drug, suggesting that S-SNEDDS could improve the oral bioavailability of poorly soluble drugs like olaparib, thus enhancing therapeutic outcomes. Furthermore, this study holds significance in crafting a potent and cost-effective pharmaceutical formulation tailored for the oral delivery of poorly soluble drugs.
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Affiliation(s)
- Yuseon Shin
- Department of Global Innovative Drugs, The Graduate School of Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea
| | - Mikyung Kim
- Department of Global Innovative Drugs, The Graduate School of Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea
| | - Chaeyeon Kim
- Department of Global Innovative Drugs, The Graduate School of Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea
| | - Hyewon Jeon
- Department of Global Innovative Drugs, The Graduate School of Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea
| | - Jain Koo
- Department of Global Innovative Drugs, The Graduate School of Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea
| | - Jimin Oh
- Department of Global Innovative Drugs, The Graduate School of Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea
| | - Soyoung Shin
- Department of Global Innovative Drugs, The Graduate School of Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea
- College of Pharmacy, Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea
| | - Yu Seok Youn
- School of Pharmacy, Sungkyunkwan University, 2066 Seobu-Ro, Jangan-Gu, Suwon, Gyeonggi-Do, 16419, Republic of Korea
| | - Chaemin Lim
- College of Pharmacy, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, Gyeonggi-do, 13488, Republic of Korea.
| | - Kyung Taek Oh
- Department of Global Innovative Drugs, The Graduate School of Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea.
- College of Pharmacy, Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea.
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10
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Nyamba I, Sombie CB, Yabre M, Zime-Diawara H, Yameogo J, Ouedraogo S, Lechanteur A, Semde R, Evrard B. Pharmaceutical approaches for enhancing solubility and oral bioavailability of poorly soluble drugs. Eur J Pharm Biopharm 2024:114513. [PMID: 39313163 DOI: 10.1016/j.ejpb.2024.114513] [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: 06/23/2024] [Revised: 09/15/2024] [Accepted: 09/20/2024] [Indexed: 09/25/2024]
Abstract
High solubility in water and physiological fluids is an indispensable requirement for the pharmacological efficacy of an active pharmaceutical ingredient. Indeed, it is well established that pharmaceutical substances exhibiting limited solubility in water are inclined towards diminished and inconsistent absorption following oral administration, consequently resulting in variability in therapeutic outcomes. The current advancements in combinatorial chemistry and pharmaceutical design have facilitated the creation of drug candidates characterized by increased lipophilicity, elevated molecular size, and reduced aqueous solubility. Undoubtedly, the issue of poorly water-soluble medications has been progressively escalating over recent years. Indeed, 40% of the top 200 oral medications marketed in the United States, 33% of drugs listed in the US pharmacopoeia, 75% of compounds under development and 90% of new chemical entities are insufficiently water-soluble compounds. In order to address this obstacle, formulation scientists employ a variety of approaches, encompassing both physical and chemical methods such as prodrug synthesis, salt formation, solid dispersions formation, hydrotropic substances utilization, solubilizing agents incorporation, cosolvent addition, polymorphism exploration, cocrystal creation, cyclodextrins complexation, lipid formulations, particle size reduction and nanoformulation techniques. Despite the utilization of these diverse approaches, the primary reason for the failure in new drug development persists as the poor aqueous solubility of pharmaceutical compounds. This paper, therefore, delves into the foundational principles that underpin the implementation of various formulation strategies, along with a discussion on the respective advantages and drawbacks associated with each approach. Additionally, a discourse is provided regarding methodological frameworks for making informed decisions on selecting an appropriate formulation strategy to effectively tackle the key challenges posed during the development of a poorly water-soluble drug candidate.
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Affiliation(s)
- Isaïe Nyamba
- Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, Université de Liège, 4000 Liège, Belgium; Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso; Institut Supérieur des Sciences de la Santé (INSSA), Université Nazi Boni, 01 BP 1091 Bobo-Dioulasso 01, Burkina Faso.
| | - Charles B Sombie
- Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Moussa Yabre
- Institut Supérieur des Sciences de la Santé (INSSA), Université Nazi Boni, 01 BP 1091 Bobo-Dioulasso 01, Burkina Faso
| | - Hermine Zime-Diawara
- Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Josias Yameogo
- Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Salfo Ouedraogo
- Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Anna Lechanteur
- Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, Université de Liège, 4000 Liège, Belgium
| | - Rasmané Semde
- Laboratory of Drug Development, Center of Training, Research and Expertise in Pharmaceutical Sciences (CFOREM), Doctoral School of Sciences and Health, Université Joseph KI-ZERBO, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Brigitte Evrard
- Laboratory of Pharmaceutical Technology and Biopharmacy, CIRM, Université de Liège, 4000 Liège, Belgium
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11
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Yu D, Li M, Hoag SW, Nie H. Understanding Excipient-Induced Crystallization of Spray-Dried Amorphous Solid Dispersion. J Pharm Sci 2024:S0022-3549(24)00352-6. [PMID: 39306037 DOI: 10.1016/j.xphs.2024.08.024] [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: 05/25/2024] [Revised: 08/22/2024] [Accepted: 08/23/2024] [Indexed: 10/08/2024]
Abstract
This study investigates the compatibility of excipients with the model system SDI-X and their role in the induced crystallization of the amorphous compound-X in tablet formulations. We aimed to establish a straightforward and practical screening approach for evaluating excipient-induced crystallization of SDI in tablet matrices. Three methodologies-binary powder mixture, binary compact, and bilayer tablets-were employed to qualitatively and quantitatively evaluate the recrystallization of SDI-X with various excipients under accelerated storage conditions. The results demonstrated that binary compacts, providing direct physical contact between SDI-X and excipients, are superior in reflecting realistic drug-excipient contact within pharmaceutical tablets, enabling a more accurate assessment of excipient-induced crystallization for SDI-X. In contrast, the broadly used conventional binary blends can significantly underestimate this risk due to insufficient proximity. In addition, the bilayer tablets further confirmed that crystallization initiates at the contact surface between SDI-X and the excipients. The study highlighted that not only hygroscopicity but also the type of excipient and its physical contact with SDI-X significantly influence the recrystallization extent and rate of SDI-X. Interestingly, less hygroscopic diluents such as mannitol and lactose induced much higher levels of crystallization of SDIs, contrary to expectations based on moisture content alone. This suggests that the excipient type and contact surface are more critical in inducing recrystallization than just the level of moisture. The findings emphasize the need for careful excipient selection, study design, and sample preparation to enable appropriate assessments of SDI-excipient compatibility.
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Affiliation(s)
- Dongyue Yu
- Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD, United States; Center for Materials Science and Engineering, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, United States
| | - Meng Li
- Center for Materials Science and Engineering, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, United States
| | - Stephen W Hoag
- Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD, United States
| | - Haichen Nie
- Center for Materials Science and Engineering, Merck & Co., Inc., 770 Sumneytown Pike, West Point, PA 19486, United States.
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12
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Fang F, Chen X. Carrier-Free Nanodrugs: From Bench to Bedside. ACS NANO 2024; 18:23827-23841. [PMID: 39163559 DOI: 10.1021/acsnano.4c09027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/22/2024]
Abstract
Carrier-free nanodrugs with extraordinary active pharmaceutical ingredient (API) loading (even 100%), avoidable carrier-induced toxicity, and simple synthetic procedures are considered as one of the most promising candidates for disease theranostics. Substantial studies and the commercial success of "carrier-free" nanocrystals have demonstrated their strong clinical potential. However, their practical translations remain challenging and are impeded by unpredictable assembly processes, insufficient delivery efficiency, and an unclear in vivo fate. In this Perspective, we systematically outline the contemporary and emerging carrier-free nanodrugs based on diverse APIs, as well as highlight their opportunities and challenges in clinical translation. Looking ahead, further improvements in design and preparation, drug delivery, in vivo efficacy, and safety of carrier-free nanomedicines are essential to facilitate their translation from the bench to bedside.
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Affiliation(s)
- Fang Fang
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and College of Design and Engineering, National University of Singapore, Singapore 119074, Singapore
- Nanomedicine Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | - Xiaoyuan Chen
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and College of Design and Engineering, National University of Singapore, Singapore 119074, Singapore
- Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
- Nanomedicine Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
- Theranostics Center of Excellence (TCE), Yong Loo Lin School of Medicine, National University of Singapore, 11 Biopolis Way, Helios, Singapore 138667, Singapore
- Institute of Molecular and Cell Biology, Agency for Science, Technology, and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore 138673, Singapore
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13
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Chen W, Yan A, Sun T, Wang X, Sun W, Pan B. Self-nanomicellizing solid dispersion: A promising platform for oral drug delivery. Colloids Surf B Biointerfaces 2024; 241:114057. [PMID: 38924852 DOI: 10.1016/j.colsurfb.2024.114057] [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: 04/12/2024] [Revised: 06/18/2024] [Accepted: 06/23/2024] [Indexed: 06/28/2024]
Abstract
Amorphous solid dispersion (ASD) has been widely used to enhance the oral bioavailability of water-insoluble drugs for oral delivery because of its advantages of enhancing solubility and dissolution rate. However, the problems related to drug recrystallization after drug dissolution in media or body fluid have constrained its application. Recently, a self-nanomicellizing solid dispersion (SNMSD) has been developed by incorporating self-micellizing polymers as carriers to settle the problems, markedly improving the ability of supersaturation maintenance and enhancing the oral bioavailability of drug. Spontaneous formation and stability of the self-nanomicelle (SNM) have been proved to be the key to supersaturation maintenance of SNMSD system. This offers a novel research direction for maintaining supersaturation and enhancing the bioavailability of ASDs. To delve into the advantages of SNMSDs, we provide a concise review introducing the formation mechanism, characterization methods and stability of SNMs, emphasizing the advantages of SNMSDs for oral drug delivery facilitated by SNM formation, and discussing relevant research prospects.
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Affiliation(s)
- Weitao Chen
- College of Veterinary Medicine, China Agricultural University, No. 2 Yuan Ming Yuan West Road, Hai Dian District, Beijing 100193, China
| | - An Yan
- College of Veterinary Medicine, China Agricultural University, No. 2 Yuan Ming Yuan West Road, Hai Dian District, Beijing 100193, China
| | - Tiancong Sun
- College of Veterinary Medicine, China Agricultural University, No. 2 Yuan Ming Yuan West Road, Hai Dian District, Beijing 100193, China
| | - Xu Wang
- College of Veterinary Medicine, China Agricultural University, No. 2 Yuan Ming Yuan West Road, Hai Dian District, Beijing 100193, China
| | - Weiwei Sun
- College of Veterinary Medicine, China Agricultural University, No. 2 Yuan Ming Yuan West Road, Hai Dian District, Beijing 100193, China.
| | - Baoliang Pan
- College of Veterinary Medicine, China Agricultural University, No. 2 Yuan Ming Yuan West Road, Hai Dian District, Beijing 100193, China.
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14
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Gao Y, Sun J, Li W, Deng W, Wang Y, Li X, Yang Z. Sophoraflavanone G: A review of the phytochemistry and pharmacology. Fitoterapia 2024; 177:106080. [PMID: 38901805 DOI: 10.1016/j.fitote.2024.106080] [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: 03/25/2024] [Revised: 06/13/2024] [Accepted: 06/16/2024] [Indexed: 06/22/2024]
Abstract
Bioactive compounds derived from natural sources have long been investigated for the prevention and treatment of human diseases. Sophoraflavanone G (SFG), a lavandulyl flavanone naturally occurring in several Sophora plant species, belongs to the group of prenylated flavonoids that have garnered significant interest in contemporary research. The natural molecule exhibits a wide range of pharmacological properties and shows remarkable efficacy. Its ability to effectively suppress a range of malignant tumor cells, such as leukemia, breast cancer, and lung cancer, is attributed to its multi-target, multi-pathway, and multi-faceted mechanisms of action. Simultaneously, it can also alleviate various inflammatory diseases by mediating inflammatory mediators and molecular pathways. Furthermore, it has the capability to combat antibiotic resistance, exhibit synergistic antibacterial properties with diverse antibiotics, and prevent and treat various agricultural pests. Theoretically, it can bring benefits to human health and has potential value as a drug. Nevertheless, the drawbacks of poor water solubility and inadequate targeting cannot be overlooked. To comprehensively assess the current research on SFG, leverage its structural advantages and pharmacological activity, overcome its low bioavailability limitations, expedite its progression into a novel therapeutic drug, and better serve the clinic, this article presents a overall retrospect of the current research status of SFG. The discussion includes an analysis of the structural characteristics, physicochemical properties, bioavailability, pharmacological activities, and structure-activity relationships of SFG, with the goal of offering valuable insights and guidance for future research endeavors in this field.
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Affiliation(s)
- Yingying Gao
- School of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China; Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin, China
| | - Jialin Sun
- Postdoctoral Research Station, Heilongjiang University of Chinese Medicine, Harbin, China; Biological Science and Technology Department, Heilongjiang Vocational College for Nationalities, Harbin, China
| | - Weinan Li
- School of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China; Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin, China
| | - Weizhe Deng
- Department of Traditional Chinese Medicine, 962 Hospital of the Chinese People's Liberation Army Joint Logistic Support Force, China
| | - Yanhong Wang
- School of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China; Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin, China
| | - Xiuyan Li
- School of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China; Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin, China
| | - Zhixin Yang
- School of Pharmacy, Heilongjiang University of Chinese Medicine, Harbin, China; Key Laboratory of Basic and Application Research of Beiyao, Heilongjiang University of Chinese Medicine, Ministry of Education, Harbin, China.
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15
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Ueda K, Moseson DE, Taylor LS. Amorphous Solubility Advantage: Theoretical Considerations, Experimental Methods, and Contemporary Relevance. J Pharm Sci 2024:S0022-3549(24)00399-X. [PMID: 39222748 DOI: 10.1016/j.xphs.2024.08.029] [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: 07/12/2024] [Revised: 08/24/2024] [Accepted: 08/26/2024] [Indexed: 09/04/2024]
Abstract
Twenty-five years ago, Hancock and Parks asked a provocative question: "what is the true solubility advantage for amorphous pharmaceuticals?" Difficulties in determining the amorphous solubility have since been overcome due to significant advances in theoretical understanding and experimental methods. The amorphous solubility is now understood to be the concentration after the drug undergoes liquid-liquid or liquid-glass phase separation, forming a water-saturated drug-rich phase in metastable equilibrium with an aqueous phase containing molecularly dissolved drug. While crystalline solubility is an essential parameter impacting the absorption of crystalline drug formulations, amorphous solubility is a vital factor for considering absorption from supersaturating formulations. However, the amorphous solubility of drugs is complex, especially in the presence of formulation additives and gastrointestinal components, and concentration-based measurements may not indicate the maximum drug thermodynamic activity. This review discusses the concept of the amorphous solubility advantage, including a historical perspective, theoretical considerations, experimental methods for amorphous solubility measurement, and the contribution of supersaturation and amorphous solubility to drug absorption. Leveraging amorphous solubility and understanding the associated physicochemical principles can lead to more effective development strategies for poorly water-soluble drugs, ultimately benefiting therapeutic outcomes.
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Affiliation(s)
- Keisuke Ueda
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Dana E Moseson
- Worldwide Research and Development, Pfizer, Inc., Groton, CT 06340, United States
| | - Lynne S Taylor
- Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, IN 47907, United States.
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16
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Bapat P, Schwabe R, Paul S, Tseng YC, Bergman C, Taylor LS. Exploring biorelevant conditions and release profiles of ritonavir from HPMCAS-based amorphous solid dispersions. J Pharm Sci 2024:S0022-3549(24)00316-2. [PMID: 39186978 DOI: 10.1016/j.xphs.2024.08.013] [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: 07/11/2024] [Revised: 08/09/2024] [Accepted: 08/12/2024] [Indexed: 08/28/2024]
Abstract
Development of a release test for amorphous solid dispersions (ASDs) that is in vivo predictive is essential to identify optimally performing formulations early in development. For ASDs containing an enteric polymer, consideration of buffer properties is essential. Herein, release rates of hydroxypropyl methyl cellulose acetate succinate (HPMCAS) and ritonavir from ASDs with a 20% drug loading were compared in phosphate and bicarbonate buffers with different molarities, at pH 6.5. The bioaccessibility of ritonavir from the ASD in the tiny-TIM apparatus was also evaluated and compared to that of the crystalline drug. The surface pH at the dissolving solid: solution interface was evaluated using a pH-sensitive fluorescence probe for HPMCAS and ASD compacts in phosphate and bicarbonate buffers. Drug and polymer were found to release congruently in all buffer systems, indicating that the polymer controlled the drug release. Release was slowest in 10 mM bicarbonate buffer, and much faster in phosphate buffers with molarities typically used in release testing (20-50 mM). Release from the 10 mM bicarbonate buffer was matched in a 5 mM phosphate buffer. The surface pH of HPMCAS and HPMCAS:ritonavir ASDs was found to be lower than the bulk solution pH, where surface pH differences largely explained release rate differences seen in the different buffer systems. Ritonavir was highly bioaccessible from the ASD, as assessed by the tiny-TIM system, and much less bioaccessible when crystalline drug was used. The observations highlight the need for continued development of biorelevant assays tailored for ASD formulation assessment.
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Affiliation(s)
- Pradnya Bapat
- Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, IN 47907, United States
| | - Robert Schwabe
- Material and Analytical Sciences, Research and Development, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT 06877, United States
| | - Shubhajit Paul
- Material and Analytical Sciences, Research and Development, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT 06877, United States
| | - Yin-Chao Tseng
- Material and Analytical Sciences, Research and Development, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT 06877, United States
| | - Cameron Bergman
- Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, IN 47907, United States
| | - Lynne S Taylor
- Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, IN 47907, United States.
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17
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Cools L, Derveaux E, Reniers F, Dehaen W, Adriaensens P, Van den Mooter G. Exploring the influence of hydrogen bond donor groups on the microstructure and intermolecular interactions of amorphous solid dispersions containing diflunisal structural analogues. Int J Pharm 2024; 661:124438. [PMID: 38972518 DOI: 10.1016/j.ijpharm.2024.124438] [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: 05/17/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 07/09/2024]
Abstract
Drug-polymer intermolecular interactions, and H-bonds specifically, play an important role in the stabilization process of a compound in an amorphous solid dispersion (ASD). However, it is still difficult to predict whether or not interactions will form and what the strength of those interactions would be, based on the structure of drug and polymer. Therefore, in this study, structural analogues of diflunisal (DIF) were synthesized and incorporated in ASDs with poly(vinylpyrrolidone-co-vinyl acetate) (PVPVA) as a stabilizing polymer. The respective DIF derivatives contained different types and numbers of H-bond donor groups, which allowed to assess the influence of these structural differences on the phase behavior and the actual interactions formed in the ASDs. The highest possible drug loading of these derivatives in PVPVA were evaluated through film casting. Subsequently, a lower drug loading of each compound was spray dried. These spray dried ASDs were subjected to an in-depth solid-state nuclear magnetic resonance (ssNMR) study, including 1D spectroscopy and relaxometry, as well as 2D dipolar HETCOR experiments. The drug loading study revealed the highest possible loading of 50 wt% for the native DIF in PVPVA. The methoxy DIF derivative reached the second highest drug loading of 35 wt%, while methylation of the carboxyl group of DIF led to a sharp decrease in the maximum loading, to around 10 wt% only. Unexpectedly, the maximum loading increased again when both the COOH and OH groups of diflunisal were methylated in the dimethyl DIF derivative, to around 30 wt%. The ssNMR study on the spray dried ASD samples confirmed intermolecular H-bonding with PVPVA for native DIF and methoxy DIF. Studies of the proton relaxation decay times and 2D 1H-13C dipolar HETCOR experiments indicated that the ASDs with native DIF and methoxy DIF were homogenously mixed, while the ASDs containing DIF methyl ester and dimethyl DIF were phase separated at the nm level. It was established that, for these systems, the availability of the carboxyl group was imperative in the formation of intermolecular H-bonds with PVPVA and in the generation of homogenously mixed ASDs.
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Affiliation(s)
- Lennert Cools
- Drug Delivery and Disposition, KU Leuven, Department of Pharmaceutical and Pharmacological Sciences, Campus Gasthuisberg ON2, Herestraat 49 b921, 3000 Leuven, Belgium; Applied and Analytical Chemistry, NMR group, Institute for Materials Research (imo-imomec), UHasselt, 3590 Diepenbeek, Belgium
| | - Elien Derveaux
- Applied and Analytical Chemistry, NMR group, Institute for Materials Research (imo-imomec), UHasselt, 3590 Diepenbeek, Belgium
| | - Felien Reniers
- Sustainable Chemistry for Metals and Molecules, Department of Chemistry, KU Leuven, Celestijnelaan 200f b2404, 3001 Leuven, Belgium
| | - Wim Dehaen
- Sustainable Chemistry for Metals and Molecules, Department of Chemistry, KU Leuven, Celestijnelaan 200f b2404, 3001 Leuven, Belgium
| | - Peter Adriaensens
- Applied and Analytical Chemistry, NMR group, Institute for Materials Research (imo-imomec), UHasselt, 3590 Diepenbeek, Belgium
| | - Guy Van den Mooter
- Drug Delivery and Disposition, KU Leuven, Department of Pharmaceutical and Pharmacological Sciences, Campus Gasthuisberg ON2, Herestraat 49 b921, 3000 Leuven, Belgium.
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18
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Czajkowska-Kośnik A, Misztalewska-Turkowicz I, Wilczewska AZ, Basa A, Winnicka K. Solid Dispersions Obtained by Ball Milling as Delivery Platform of Etodolac, a Model Poorly Soluble Drug. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3923. [PMID: 39203102 PMCID: PMC11355714 DOI: 10.3390/ma17163923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Revised: 08/01/2024] [Accepted: 08/06/2024] [Indexed: 09/03/2024]
Abstract
Poor water solubility of drugs is a limiting factor for their bioavailability and pharmacological activity. Many approaches are known to improve drug solubility, and among them, the physical method, solid dispersions (SDs), is applied. SDs are physical mixtures of a drug and a carrier, sometimes with the addition of a surfactant, which can be obtained by milling, cryomilling, spray-drying, or lyophilization processes. In this study, solid dispersions with etodolac (ETD-SDs) were prepared by the milling method using different carriers, such as hypromellose, polyvinylpyrrolidone, copovidone, urea, and mannitol. Solubility studies, dissolution tests, morphological assessment, thermal analysis, and FTIR imaging were applied to evaluate the SD properties. It was shown that the ball-milling process can be applied to obtain SDs with ETD. All designed ETD-SDs were characterized by higher water solubility and a faster dissolution rate compared to unprocessed ETD. SDs with amorphous carriers (HPMC, PVP, and PVP/VA) provided greater ETD solubility than dispersions with crystalline features (urea and mannitol). FTIR spectra confirmed the compatibility of ETD with tested carriers.
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Affiliation(s)
- Anna Czajkowska-Kośnik
- Department of Pharmaceutical Technology, Medical University of Białystok, Mickiewicza 2c, 15-222 Białystok, Poland;
| | - Iwona Misztalewska-Turkowicz
- Department of Organic Chemistry, University of Białystok, Ciołkowskiego 1K, 15-245 Białystok, Poland; (I.M.-T.); (A.Z.W.); (A.B.)
| | - Agnieszka Zofia Wilczewska
- Department of Organic Chemistry, University of Białystok, Ciołkowskiego 1K, 15-245 Białystok, Poland; (I.M.-T.); (A.Z.W.); (A.B.)
| | - Anna Basa
- Department of Organic Chemistry, University of Białystok, Ciołkowskiego 1K, 15-245 Białystok, Poland; (I.M.-T.); (A.Z.W.); (A.B.)
| | - Katarzyna Winnicka
- Department of Pharmaceutical Technology, Medical University of Białystok, Mickiewicza 2c, 15-222 Białystok, Poland;
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19
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Liu Z, Huang J, Fang D, Feng B, Luo J, Lei P, Chen X, Xie Q, Chen M, Chen P. Material extrusion 3D-printing technology: A new strategy for constructing water-soluble, high-dose, sustained-release drug formulations. Mater Today Bio 2024; 27:101153. [PMID: 39081462 PMCID: PMC11287018 DOI: 10.1016/j.mtbio.2024.101153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 07/01/2024] [Accepted: 07/11/2024] [Indexed: 08/02/2024] Open
Abstract
The advantage of low-temperature forming through direct ink writing (DIW) 3D printing is becoming a strategy for the construction of innovative drug delivery systems (DDSs). Optimization of the complex formulation, including factors such as the printing ink, presence of solvents, and potential low mechanical strength, are challenges during process development. This study presents an application of DIW to fabricate water-soluble, high-dose, and sustained-release DDSs. Utilizing poorly compressible metformin hydrochloride as a model drug, a core-shell delivery system was developed, featuring a core composed of 96 % drug powder and 4 % binder, with a shell structure serving as a drug-release barrier. This design aligns with the sustained-release profile of traditional processes, achieving a 25.8 % reduction in volume and enhanced mechanical strength. The strategy facilitates sustained release of high-dose water-soluble formulations for over 12 h, potentially improving patient compliance by reducing formulation size. Process optimization and multi-batch flexibility were also explored in this study. Our findings provide a valuable reference for the development of innovative DDSs and 3D-printed drugs.
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Affiliation(s)
- Zhiting Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Jiaying Huang
- Center for New Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
- YUEBEI People’s Hospital, Shaoguan, 512026, China
| | - Danqiao Fang
- Center for New Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Bohua Feng
- Guangdong Province Engineering & Technology Research Center for Medical 3D Printer and Personalized Medicine, Guangzhou, 510006, China
| | - Jianxu Luo
- Guangdong Province Engineering & Technology Research Center for Medical 3D Printer and Personalized Medicine, Guangzhou, 510006, China
| | - Peixuan Lei
- Center for New Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xiaoling Chen
- Center for New Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Qingchun Xie
- Center for New Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Meiwan Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Peihong Chen
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing, 210009, China
- Center for New Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
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20
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Zaid Alkilani A, Omar S, Nasereddin J, Hamed R, Obeidat R. Design of colon-targeted drug delivery of dexamethasone: Formulation and in vitro characterization of solid dispersions. Heliyon 2024; 10:e34212. [PMID: 39100451 PMCID: PMC11295959 DOI: 10.1016/j.heliyon.2024.e34212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 07/03/2024] [Accepted: 07/05/2024] [Indexed: 08/06/2024] Open
Abstract
Colon-targeted drug delivery continues to generate increasing attention for its prospects in treating inflammatory bowel disease (IBD). This study aimed to develop and evaluate colon-targeted solid dispersions of dexamethasone (DEX-SDs) in vitro to reduce its systemic exposure. This would ultimately improve the therapeutic efficacy of DEX while minimizing its adverse effects. Different DEX-SDs formulations were prepared utilizing Eudragit S100 (EU S100) and a combination of hydroxypropyl methyl cellulose (HPMC) and EU S100 to tune its drug release profile suitable for colonic delivery. The fabricated formulations were extensively characterized via Attenuated Total Reflectance - Fourier Transform Infrared Spectroscopy (ATR-FTIR), differential scanning calorimetry (DSC), powder X-ray diffraction (PXRD), and polarized light microscopy (PLM). The different characterization techniques strongly suggest preparing solid solution-type solid dispersions of DEX with the other polymers (DEX-SDs). In addition, the in vitro dissolution of DEX-SDs was evaluated using two dissolution media (pH 1.2 and 7.4). The in vitro release of DEX-SDs was low in the acidic media and higher and sustained in the basic medium, leading to the conclusion that the developed DEX-SDs may represent an effective technology can overcome challenges related to poor drug solubility and bioavailability.
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Affiliation(s)
- Ahlam Zaid Alkilani
- Department of Pharmacy, Faculty of Pharmacy, Zarqa University, Zarqa, Jordan
| | - Sara Omar
- Department of Pharmacy, Faculty of Pharmacy, Zarqa University, Zarqa, Jordan
| | - Jehad Nasereddin
- Department of Pharmacy, Faculty of Pharmacy, Zarqa University, Zarqa, Jordan
| | - Rania Hamed
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, Jordan
| | - Rana Obeidat
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, The University of Jordan, Amman, Jordan
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21
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Mareczek L, Mueller LK, Halstenberg L, Geiger TM, Walz M, Zheng M, Hausch F. Use of Poly(vinyl alcohol) in Spray-Dried Dispersions: Enhancing Solubility and Stability of Proteolysis Targeting Chimeras. Pharmaceutics 2024; 16:924. [PMID: 39065621 PMCID: PMC11279962 DOI: 10.3390/pharmaceutics16070924] [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: 06/07/2024] [Revised: 07/05/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
PROTACs, proteolysis targeting chimeras, are bifunctional molecules inducing protein degradation through a unique proximity-based mode of action. While offering several advantages unachievable by classical drugs, PROTACs have unfavorable physicochemical properties that pose challenges in application and formulation. In this study, we show the solubility enhancement of two PROTACs, ARV-110 and SelDeg51, using Poly(vinyl alcohol). Hereby, we apply a three-fluid nozzle spray drying set-up to generate an amorphous solid dispersion with a 30% w/w drug loading with the respective PROTACs and the hydrophilic polymer. Dissolution enhancement was achieved and demonstrated for t = 0 and t = 4 weeks at 5 °C using a phosphate buffer with a pH of 6.8. A pH shift study on ARV-110-PVA is shown, covering transfer from simulated gastric fluid (SGF) at pH 2.0 to fasted-state simulated intestinal fluid (FaSSIF) at pH 6.5. Additionally, activity studies and binding assays of the pure SelDeg51 versus the spray-dried SelDeg51-PVA indicate no difference between both samples. Our results show how modern enabling formulation technologies can partially alleviate challenging physicochemical properties, such as the poor solubility of increasingly large 'small' molecules.
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Affiliation(s)
| | | | | | - Thomas M. Geiger
- Department of Chemistry, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Michael Walz
- Department of Chemistry, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Min Zheng
- Department of Chemistry, Technical University of Darmstadt, 64287 Darmstadt, Germany
| | - Felix Hausch
- Department of Chemistry, Technical University of Darmstadt, 64287 Darmstadt, Germany
- Centre for Synthetic Biology, Technical University of Darmstadt, 64287 Darmstadt, Germany
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22
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Gao J, Fan Y, Lu C, Zhao X, He X. The baicalein amorphous solid dispersion to enhance the dissolution and bioavailability and effects on growth performance, meat quality, antioxidant capacity and intestinal flora in Taihang chickens. Poult Sci 2024; 103:103768. [PMID: 38703758 PMCID: PMC11079524 DOI: 10.1016/j.psj.2024.103768] [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: 01/16/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 05/06/2024] Open
Abstract
Baicalein (BAI) is a natural flavonoid with antioxidant, antitumor and antibacterial properties. However, the bioavailability of BAI was limited due to low solubility. This study aims to improve the solubility of BAI through the amorphous solid dispersion (ASD) and evaluate changes in its pharmacokinetics and pharmacodynamics in Taihang chickens. Polyethylene caprolactam-polyvinyl acetate-polyethylene glycol grafted copolymer (Soluplus) was chosen as the carrier, and ASD was prepared by rotary evaporation and was characterized by powder X-ray diffractions (PXRD), differential scanning calorimetry (DSC) and fourier transform infrared spectroscopy (FT-IR). In vitro dissolution assays were used to screen the optimal ratio of drug to carrier, in vivo pharmacokinetic assays were conducted to investigate the promoting effect on the absorption. In addition, the effects of ASD on the growth performance, meat quality, antioxidant capacity and intestinal flora were investigated. ASD (1:9 and 2:8) did not exhibit crystal diffraction peaks of BAI in PXRD or endothermic peaks in DSC, indicating the successful preparation of ASD. The results of in vitro dissolution assay showed that the cumulative dissolution rate of ASD (2:8) within 600 min was 52.67%, which was 7.84-fold higher than BAI. The pharmacokinetic results showed that the peak concentration (Cmax) and the area under the drug-time curve (AUC0∼24) of ASD (2:8) was (5.20 ± 0.82) μg/mL and (17.03 ± 0.67) μg·h/mL, which was 1.91 and 2.64-fold higher than BAI, respectively. Dietary supplementation of BAI and ASD could increase average daily gain (ADG), while decrease feed conversion ratio (FCR), but there was no significant difference (P > 0.05). The drip loss of BAIASD group was lower than BAI group (P < 0.05). In addition, the antioxidant capacity of Taihang chickens were enhanced, the diversity and the abundance of beneficial bacteria was improved. Results of BAI upon the dietary supplementation tested in Taihang chickens, after preparation of ASD, indicating a superior enhancement effect in growth performance, meat quality, antioxidant capacity and intestinal flora due to an improved solubility and optimized bioavailability.
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Affiliation(s)
- Jianting Gao
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Yingsai Fan
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Chenyue Lu
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Xinghua Zhao
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Xin He
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, Hebei 071000, China.
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23
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Tatsumi Y, Shimoyama Y, Kazarian SG. Analysis of the Dissolution Behavior of Theophylline and Its Cocrystal Using ATR-FTIR Spectroscopic Imaging. Mol Pharm 2024; 21:3233-3239. [PMID: 38804156 PMCID: PMC11220746 DOI: 10.1021/acs.molpharmaceut.4c00002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/29/2024]
Abstract
Attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopic imaging is a powerful tool to visualize the distribution of components, and it has been used to analyze drug release from tablets. In this work, ATR-FTIR spectroscopic imaging was applied for observing the dissolution of molecular crystals from tablet compacts. The IR spectra provided chemically specific information about the transformation of crystal structures during the dissolution experiments. Theophylline (TPL) anhydrate and its cocrystals were used as model systems of molecular crystals. The IR spectra during the dissolution of TPL revealed information about the crystal structure of TPL, which transformed from anhydrate to monohydrate in water. During a dissolution test of a model cocrystal system, it was suggested that an active pharmaceutical ingredient (API) and a coformer were dissolved in water simultaneously. The IR spectra that were acquired during the dissolution of a cocrystal tablet showed new spectral bands attributed to the API after 5 min. This suggested that the precipitation of API was observed during the dissolution experiment. Measurements from ATR-FTIR spectroscopic imaging can visualize the drug release from the tablet and determine the transformation of molecular crystals during their dissolution. These results will have an impact on clarifying the dissolution mechanism of molecular crystals.
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Affiliation(s)
- Yuna Tatsumi
- Department
of Chemical Science and Engineering, Tokyo
Institute of Technology, S1-33 2-12-1 Ookayama, Meguro-ku, Tokyo 1528550, Japan
| | - Yusuke Shimoyama
- Department
of Chemical Science and Engineering, Tokyo
Institute of Technology, S1-33 2-12-1 Ookayama, Meguro-ku, Tokyo 1528550, Japan
| | - Sergei G. Kazarian
- Department
of Chemical Engineering, Imperial College
London, London SW7 2AZ, United
Kingdom
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24
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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; 50:628-638. [PMID: 39030701 DOI: 10.1080/03639045.2024.2382396] [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: 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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25
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Alhamhoom Y, Kumaraswamy T, Kumar A, Nanjappa SH, Prakash SS, Rahamathulla M, Thajudeen KY, Ahmed MM, Shivanandappa TB. Formulation and Evaluation of pH-Modulated Amorphous Solid Dispersion-Based Orodispersible Tablets of Cefdinir. Pharmaceutics 2024; 16:866. [PMID: 39065563 PMCID: PMC11279461 DOI: 10.3390/pharmaceutics16070866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/22/2024] [Accepted: 06/25/2024] [Indexed: 07/28/2024] Open
Abstract
Cefdinir (CEF) is a semi-synthetic third-generation broad-spectrum oral cephalosporin that exhibits poor solubility at lower pH values. Considering this, pH-modulated CEF solid dispersions (ASDs) were produced by solvent evaporation method employing various hydrophilic carriers and alkalizers. Among different carriers, ASDs produced using PEG 6000 with meglumine as alkalizer were found to significantly increase (p < 0.005) the drug solubility (4.50 ± 0.32 mg/mL) in pH 1.2. Fourier transform infrared spectrophotometry confirmed chemical integrity of CEF while differential scanning calorimetry (DSC) and X-ray diffractometry (XRD) indicated CEF was reduced to an amorphous state in ASD8. Antimicrobial assay performed by well diffusion method against Staphylococcus aureus (MTCC96) and Escherichia coli (MTCC118) demonstrated significantly superior (p < 0.001) efficacy of CEFSD compared to CEF. The porous orodispersible tablets (ODTs) of ASD8 (batch F5) were developed by incorporating ammonium bicarbonate as a subliming agent by direct compression, followed by vacuum drying displayed quick disintegration (27.11 ± 1.96 s) that met compendial norms and near-complete dissolution (93.85 ± 1.27%) in 30 min. The ODTs of ASD8 appear to be a promising platform to mitigate the pH-dependent solubility and dissolution issues associated with CEF in challenging physiological pH conditions prevalent in stomach. Thus, ODTs of ASD8 are likely to effectively manage various infections and avoid development of drug-resistant strains, thereby improving the curing rates.
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Affiliation(s)
- Yahya Alhamhoom
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Al Faraa, Abha 62223, Saudi Arabia; (Y.A.); (M.R.)
| | - Thanusha Kumaraswamy
- Department of Pharmaceutics, KLE College of Pharmacy, Rajajinagar, Bengaluru 560010, India; (T.K.); (A.K.); (S.S.P.)
| | - Avichal Kumar
- Department of Pharmaceutics, KLE College of Pharmacy, Rajajinagar, Bengaluru 560010, India; (T.K.); (A.K.); (S.S.P.)
| | | | - Sanjana S. Prakash
- Department of Pharmaceutics, KLE College of Pharmacy, Rajajinagar, Bengaluru 560010, India; (T.K.); (A.K.); (S.S.P.)
| | - Mohamed Rahamathulla
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Al Faraa, Abha 62223, Saudi Arabia; (Y.A.); (M.R.)
| | - Kamal Y. Thajudeen
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Al Faraa, Abha 62223, Saudi Arabia;
| | - Mohammed Muqtader Ahmed
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdul Aziz University, Al Kharj 11942, Saudi Arabia;
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26
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Ran Woo M, Bak YW, Cheon S, Suk Kim J, Hun Ji S, Park S, Woo S, Oh Kim J, Giu Jin S, Choi HG. Modification of microenvironmental pH of nanoparticles for enhanced solubility and oral bioavailability of poorly water-soluble celecoxib. Int J Pharm 2024; 659:124179. [PMID: 38692498 DOI: 10.1016/j.ijpharm.2024.124179] [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: 02/29/2024] [Revised: 04/18/2024] [Accepted: 04/28/2024] [Indexed: 05/03/2024]
Abstract
This study aimed to develop a novel pH-modified nanoparticle with improved solubility and oral bioavailability of poorly water-soluble celecoxib by modifying the microenvironmental pH. After assessing the impact of hydrophilic polymers, surfactants and alkaline pH modifiers on the drug solubility, copovidone, sodium lauryl sulfate (SLS) and meglumine were chosen. The optimal formulation of solvent-evaporated, surface-attached and pH-modified nanoparticles composed of celecoxib/copovidone/SLS/meglumine at weight ratios of 1:1:0.2:0, 1:0.375:1.125:0 and 1:1:1:0.2:0.02, respectively, were manufactured using spray drying technique. Their physicochemical characteristics, solubility, dissolution and pharmacokinetics in rats were evaluated compared to the celecoxib powder. The solvent-evaporated and pH-modified nanoparticles converted a crystalline to an amorphous drug, resulting in a spherical shape with a reduced particle size compared to celecoxib powder. However, the surface-attached nanoparticles with insignificant particle size exhibited the unchangeable crystalline drug. All of them gave significantly higher solubility, dissolution, and oral bioavailability than celecoxib powder. Among them, the pH-modified nanoparticles demonstrated the most significant improvement in solubility (approximately 1600-fold) and oral bioavailability (approximately 4-fold) compared to the drug powder owing to the alkaline microenvironment formation effect of meglumine and the conversion to the amorphous drug. Thus, the pH-modified nanoparticle system would be a promising strategy for improving the solubility and oral bioavailability of poorly water-soluble and weakly acidic celecoxib.
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Affiliation(s)
- Mi Ran Woo
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, South Korea
| | - Young-Woo Bak
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, South Korea
| | - Seunghyun Cheon
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, South Korea
| | - Jung Suk Kim
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, South Korea
| | - Sang Hun Ji
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, South Korea
| | - Seonghyeon Park
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, South Korea
| | - Sanghyun Woo
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, South Korea
| | - Jong Oh Kim
- College of Pharmacy, Yeungnam University, 214-1, Dae-Dong, Gyongsan 712-749, South Korea
| | - Sung Giu Jin
- Department of Pharmaceutical Engineering, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan 31116, South Korea.
| | - Han-Gon Choi
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 15588, South Korea.
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27
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Figueiredo J, Mendes M, Pais A, Sousa J, Vitorino C. Microfluidics-on-a-chip for designing celecoxib-based amorphous solid dispersions: when the process shapes the product. Drug Deliv Transl Res 2024:10.1007/s13346-024-01633-7. [PMID: 38861140 DOI: 10.1007/s13346-024-01633-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2024] [Indexed: 06/12/2024]
Abstract
The fundamental idea underlying the use of amorphous solid dispersions (ASDs) is to make the most of the solubility advantage of the amorphous form of a drug. However, the drug stability becomes compromised due to the higher free energy and disorder of molecular packing in the amorphous phase, leading to crystallization. Polymers are used as a matrix to form a stable homogeneous amorphous system to overcome the stability concern. The present work aims to design ASD-based formulations under the umbrella of quality by design principles for improving oral drug bioavailability, using celecoxib (CXB) as a model drug. ASDs were prepared from selected polymers and tested both individually and in combinations, using various manufacturing techniques: high-shear homogenization, high-pressure homogenization, microfluidics-on-a-chip, and spray drying. The resulting dispersions were further optimized, resorting to a 32 full-factorial design, considering the drug:polymers ratio and the total solid content as variables. The formulated products were evaluated regarding analytical centrifugation and the influence of the different polymers on the intrinsic dissolution rate of the CXB-ASDs. Microfluidics-on-a-chip led to the amorphous status of the formulation. The in vitro evaluation demonstrated a remarkable 26-fold enhancement in the intrinsic dissolution rate, and the translation of this formulation into tablets as the final dosage form is consistent with the observed performance enhancement. These findings are supported by ex vivo assays, which exhibited a two-fold increase in permeability compared to pure CXB. This study tackles the bioavailability hurdles encountered with diverse active compounds, offering insights into the development of more effective drug delivery platforms.
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Affiliation(s)
- Joana Figueiredo
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548, Coimbra, Portugal
| | - Maria Mendes
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548, Coimbra, Portugal
- Coimbra Chemistry Centre, Institute of Molecular Sciences - IMS, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
| | - Alberto Pais
- Coimbra Chemistry Centre, Institute of Molecular Sciences - IMS, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
| | - João Sousa
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548, Coimbra, Portugal
- Coimbra Chemistry Centre, Institute of Molecular Sciences - IMS, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
| | - Carla Vitorino
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548, Coimbra, Portugal.
- Coimbra Chemistry Centre, Institute of Molecular Sciences - IMS, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal.
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28
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Mora-Castaño G, Millán-Jiménez M, Niederquell A, Schönenberger M, Shojaie F, Kuentz M, Caraballo I. Amorphous solid dispersion of a binary formulation with felodipine and HPMC for 3D printed floating tablets. Int J Pharm 2024; 658:124215. [PMID: 38740104 DOI: 10.1016/j.ijpharm.2024.124215] [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: 03/01/2024] [Revised: 04/19/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024]
Abstract
This study focuses on the combination of three-dimensional printing (3DP) and amorphous solid dispersion (ASD) technologies for the manufacturing of gastroretentive floating tablets. Employing hot melt extrusion (HME) and fused deposition modeling (FDM), the study investigates the development of drug-loaded filaments and 3D printed (3DP) tablets containing felodipine as model drug and hydroxypropyl methylcellulose (HPMC) as the polymeric carrier. Prior to fabrication, solubility parameter estimation and molecular dynamics simulations were applied to predict drug-polymer interactions, which are crucial for ASD formation. Physical bulk and surface characterization complemented the quality control of both drug-loaded filaments and 3DP tablets. The analysis confirmed a successful amorphous dispersion of felodipine within the polymeric matrix. Furthermore, the low infill percentage and enclosed design of the 3DP tablet allowed for obtaining low-density systems. This structure resulted in buoyancy during the entire drug release process until a complete dissolution of the 3DP tablets (more than 8 h) was attained. The particular design made it possible for a single polymer to achieve a zero-order controlled release of the drug, which is considered the ideal kinetics for a gastroretentive system. Accordingly, this study can be seen as an advancement in ASD formulation for 3DP technology within pharmaceutics.
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Affiliation(s)
- Gloria Mora-Castaño
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Seville, Spain
| | - Mónica Millán-Jiménez
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Seville, Spain.
| | - Andreas Niederquell
- School of Life Sciences, University of Applied Sciences and Arts Northwestern Switzerland, CH 4132 Muttenz, Switzerland
| | - Monica Schönenberger
- University of Basel, Swiss Nanoscience Institute, Nano Imaging Lab, Klingelbergstrasse 82, 4056 Basel, Switzerland
| | - Fatemeh Shojaie
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Seville, Spain
| | - Martin Kuentz
- School of Life Sciences, University of Applied Sciences and Arts Northwestern Switzerland, CH 4132 Muttenz, Switzerland
| | - Isidoro Caraballo
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidad de Sevilla, 41012 Seville, Spain
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29
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Helmy AM, Lu A, Duggal I, Rodrigues KP, Maniruzzaman M. Electromagnetic drop-on-demand (DoD) technology as an innovative platform for amorphous solid dispersion production. Int J Pharm 2024; 658:124185. [PMID: 38703932 DOI: 10.1016/j.ijpharm.2024.124185] [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: 01/12/2024] [Revised: 04/25/2024] [Accepted: 04/29/2024] [Indexed: 05/06/2024]
Abstract
Production of amorphous solid dispersions (ASDs) is an effective strategy to promote the solubility and bioavailability of poorly water soluble medicinal substances. In general, ASD is manufactured using a variety of classic and modern techniques, most of which rely on either melting or solvent evaporation. This proof-of-concept study is the first ever to introduce electromagnetic drop-on-demand (DoD) technique as an alternative solvent evaporation-based method for producing ASDs. Herein 3D printing of ASDs for three drug-polymer combinations (efavirenz-Eudragit L100-55, lumefantrine-hydroxypropyl methylcellulose acetate succinate, and favipiravir-polyacrylic acid) was investigated to ascertain the reliability of this technique. Polarized light microscopy, differential scanning calorimetry (DSC), X-ray powder diffraction (XRPD), and Fourier Transform Infrared (FTIR) spectroscopy results supported the formation of ASDs for the three drugs by means of DoD 3D printing, which significantly increases the equilibrium solubility of efavirenz from 0.03 ± 0.04 µg/ml to 21.18 ± 4.20 µg/ml, and the equilibrium solubility of lumefantrine from 1.26 ± 1.60 µg/ml to 20.21 ± 6.91 µg/ml. Overall, the reported findings show how this new electromagnetic DoD technology can have a potential to become a cutting-edge 3D printing solvent-evaporation technique for on-demand and continuous manufacturing of ASDs for a variety of drugs.
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Affiliation(s)
- Abdelrahman M Helmy
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA; Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Deraya University, Minya, Egypt
| | - Anqi Lu
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
| | - Ishaan Duggal
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
| | - Kristina P Rodrigues
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
| | - Mohammed Maniruzzaman
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA; Pharmaceutical Engineering and 3D Printing (PharmE3D) Lab, Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, MS 38677-1848, USA.
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Ali ISM, Sajad UA, Abdul Rasool BK. Solid dispersion systems for enhanced dissolution of poorly water-soluble candesartan cilexetil: In vitro evaluation and simulated pharmacokinetics studies. PLoS One 2024; 19:e0303900. [PMID: 38843120 PMCID: PMC11156308 DOI: 10.1371/journal.pone.0303900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 05/02/2024] [Indexed: 06/09/2024] Open
Abstract
BACKGROUND Candesartan cilexetil (CC) is a selective angiotensin II receptor antagonist widely used to treat hypertension. CC is a substrate of P-glycoprotein (P-gp), causing its efflux to the intestinal lumen. It is also practically insoluble in water and has low oral bioavailability (14%). Thus, the current study aims to improve the in vitro dissolution of CC by developing solid dispersion systems (SDSs) and corroborating the in vitro results using a simulated pharmacokinetics study. METHODS The SDSs were prepared using polyvinyl pyrrolidone (PVP) as a water-soluble polymer, Eudragit E100 (EE100) as a pH-dependent soluble carrier, and a combination of these two polymers. The saturation solubility and the dissolution rate studies of the prepared systems in three dissolution media were performed. The optimized system SE-EE5 was selected for further investigations, including DSC, XRD, FTIR, FESEM, DLS, TSEM, IVIVC convolution study, and stability studies. RESULTS The solubility of CC significantly increased by a factor of 27,037.344 when formulated as a solid dispersion matrix using EE100 at a ratio of 1:5 (w/w) drug to polymer (SE-EE5 SD), compared to the solubility of the pure drug. The mechanism of solubility and dissolution rate enhancement of CC by the optimized SDS was found to be via the conversion of the crystalline CC into the amorphous form as well as nanoparticles formation upon dissolution at a pH below 5. The instrumental analysis tests showed good compatibility between CC and EE100 and there was no chemical interaction between the drug and the polymer. Moreover, the stability tests confirmed that the optimized system was stable after three months of storage at 25°C. CONCLUSION The utilization of the solid dispersion technique employing EE 100 polymer as a matrix demonstrates significant success in enhancing the solubility, dissolution, and subsequently, the bioavailability of water-insoluble drugs like CC.
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Affiliation(s)
| | - Uday Aziz Sajad
- Pharmaceutics Department, College of Pharmacy, University of Basrah, Basrah, Iraq
- Pharmaceutics Department, College of Pharmacy, Almaaqal University, Basrah, Iraq
| | - Bazigha K. Abdul Rasool
- Department of Pharmaceutical Sciences, Dubai Pharmacy College for Girls, Dubai, United Arab Emirates
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Gupta A, Dahima R, Panda SK, Gupta A, Singh GD, Wani TA, Hussain A, Rathore D. QbD-Based Development and Evaluation of Pazopanib Hydrochloride Extrudates Prepared by Hot-Melt Extrusion Technique: In Vitro and In Vivo Evaluation. Pharmaceutics 2024; 16:764. [PMID: 38931886 PMCID: PMC11206766 DOI: 10.3390/pharmaceutics16060764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/28/2024] [Accepted: 05/28/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Pazopanib hydrochloride (PZB) is a protein kinase inhibitor approved by the United States Food and Drug Administration and European agencies for the treatment of renal cell carcinoma and other renal malignancies. However, it exhibits poor aqueous solubility and inconsistent oral drug absorption. In this regard, the current research work entails the development and evaluation of the extrudates of pazopanib hydrochloride by the hot-melt extrusion (HME) technique for solubility enhancement and augmenting oral bioavailability. RESULTS Solid dispersion of the drug was prepared using polymers such as Kollidon VA64, hydroxypropylmethylcellulose (HPMC), Eudragit EPO, and Affinisol 15LV in a 1:2 ratio by the HME process through a lab-scale 18 mm extruder. Systematic optimization of the formulation variables was carried out with the help of custom screening design (JMP Software by SAS, Version 14.0) to study the impact of polymer type and plasticizer level on the quality of extrudate processability by measuring the torque value, appearance, and disintegration time as the responses. The polymer blends containing Kollidon VA64 and Affinisol 15LV resulted in respective clear transparent extrudates, while Eudragit EPO and HPMC extrudates were found to be opaque white and brownish, respectively. Furthermore, evaluation of the impact of process parameters such as screw rpm and barrel temperature was measured using a definitive screening design on the extrude appearance, torque, disintegration time, and dissolution profile. Based on the statistical outcomes, it can be concluded that barrel temperature has a significant impact on torque, disintegration time, and dissolution at 30 min, while screw speed has an insignificant impact on the response variables. Affinisol extrudates showed less moisture uptake and faster dissolution in comparison to Kollidon VA64 extrudates. Affinisol extrudates were evaluated for polymorphic stability up to a 3-month accelerated condition and found no recrystallization. PZB-Extrudates using the Affinisol polymer (Test formulation A) revealed significantly higher bioavailability (AUC) in comparison to the free Pazopanib drug and marketed formulation.
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Affiliation(s)
- Amit Gupta
- School of Pharmacy, Devi Ahilya Vishwavidyalaya, Takshashila Campus, Ring Road, Indore 452001, India; (R.D.); (D.R.)
| | - Rashmi Dahima
- School of Pharmacy, Devi Ahilya Vishwavidyalaya, Takshashila Campus, Ring Road, Indore 452001, India; (R.D.); (D.R.)
| | - Sunil K. Panda
- Research & Development, GM Pharmaceutical Inc., 0114 Tbilisi, Georgia;
| | - Annie Gupta
- Amity Institute of Pharmacy, Amity University, Sector 125, Noida 201303, India
| | - Gaurav Deep Singh
- Department of Chemistry, Radha Govind University, Ramgarh 829122, India
| | - Tanveer A. Wani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Afzal Hussain
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Devashish Rathore
- School of Pharmacy, Devi Ahilya Vishwavidyalaya, Takshashila Campus, Ring Road, Indore 452001, India; (R.D.); (D.R.)
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32
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Qian K, Stella L, Liu F, Jones DS, Andrews GP, Tian Y. Kinetic and Thermodynamic Interplay of Polymer-Mediated Liquid-Liquid Phase Separation for Poorly Water-Soluble Drugs. Mol Pharm 2024; 21:2878-2893. [PMID: 38767457 DOI: 10.1021/acs.molpharmaceut.4c00033] [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: 05/22/2024]
Abstract
Understanding the interplay between kinetics and thermodynamics of polymer-mediated liquid-liquid phase separation is crucial for designing and implementing an amorphous solid dispersion formulation strategy for poorly water-soluble drugs. This work investigates the phase behaviors of a poorly water-soluble model drug, celecoxib (CXB), in a supersaturated aqueous solution with and without polymeric additives (PVP, PVPVA, HPMCAS, and HPMCP). Drug-polymer-water ternary phase diagrams were also constructed to estimate the thermodynamic behaviors of the mixtures at room temperature. The liquid-liquid phase separation onset point for CXB was detected using an inline UV/vis spectrometer equipped with a fiber optic probe. Varying CXB concentrations were achieved using an accurate syringe pump throughout this study. The appearance of the transient nanodroplets was verified by cryo-EM and total internal reflection fluoresence microscopic techniques. The impacts of various factors, such as polymer composition, drug stock solution pumping rates, and the types of drug-polymer interactions, are tested against the onset points of the CXB liquid-liquid phase separation (LLPS). It was found that the types of drug-polymer interactions, i.e., hydrogen bonding and hydrophobic interactions, are vital to the position and shapes of LLPS in the supersaturation drug solution. A relation between the behaviors of LLPS and its location in the CXB-polymer-water ternary phase diagram was drawn from the findings.
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Affiliation(s)
- Kaijie Qian
- School of Pharmacy, McClay Research Centre, Queen's University Belfast, 97 Lisburn Road, Northern Ireland BT9 7BL, U.K
| | - Lorenzo Stella
- School of Mathematics and Physics, Queen's University Belfast, University Road, Belfast BT7 1NN, U.K
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Stranmillis Road, Belfast BT9 5AG, U.K
| | - Fanjun Liu
- School of Pharmacy, McClay Research Centre, Queen's University Belfast, 97 Lisburn Road, Northern Ireland BT9 7BL, U.K
| | - David S Jones
- School of Pharmacy, McClay Research Centre, Queen's University Belfast, 97 Lisburn Road, Northern Ireland BT9 7BL, U.K
| | - Gavin P Andrews
- School of Pharmacy, McClay Research Centre, Queen's University Belfast, 97 Lisburn Road, Northern Ireland BT9 7BL, U.K
| | - Yiwei Tian
- School of Pharmacy, McClay Research Centre, Queen's University Belfast, 97 Lisburn Road, Northern Ireland BT9 7BL, U.K
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Moseson DE, Tran TB, Karunakaran B, Ambardekar R, Hiew TN. Trends in amorphous solid dispersion drug products approved by the U.S. Food and Drug Administration between 2012 and 2023. Int J Pharm X 2024; 7:100259. [PMID: 38974024 PMCID: PMC11225173 DOI: 10.1016/j.ijpx.2024.100259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Accepted: 06/01/2024] [Indexed: 07/09/2024] Open
Abstract
Forty-eight (48) drug products (DPs) containing amorphous solid dispersions (ASDs) have been approved by the U.S. Food and Drug Administration in the 12-year period between 2012 and 2023. These DPs comprise 36 unique amorphous drugs. Ten (10) therapeutic categories are represented, with most DPs containing antiviral and antineoplastic agents. The most common ASD polymers are copovidone (49%) and hypromellose acetate succinate (30%), while spray drying (54%) and hot melt extrusion (35%) are the most utilized manufacturing processes to prepare the ASD drug product intermediate (DPI). Tablet dosage forms are the most common, with several capsule products available. Line extensions of several DPs based on flexible oral solids and powders for oral suspension have been approved which provide patient-centric dosing to pediatric and other patient populations. The trends in the use of common excipients and film coating types are discussed. Eighteen (18) DPs are fixed-dose combinations, and some contain a mixture of amorphous and crystalline drugs. The DPs have dose/unit of amorphous drug ranging from <5 mg up to 300 mg, with the majority being ≤100 mg/unit. This review details several aspects of DPI and DP formulation and manufacturing of ASDs, as well as trends related to therapeutic category, dose, and patient-centricity.
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Affiliation(s)
- Dana E. Moseson
- Worldwide Research and Development, Pfizer, Inc., Groton, CT 06340, USA
| | - Trong Bien Tran
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa 52242, USA
| | - Bharathi Karunakaran
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa 52242, USA
| | - Rohan Ambardekar
- Worldwide Research and Development, Pfizer, Inc., Sandwich CT13 9NJ, UK
| | - Tze Ning Hiew
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa 52242, USA
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Chen Z, Gao W, Feng X, Zhou G, Zhang M, Zeng L, Hu X, Liu Z, Song H. A comparative study on the preparation and evaluation of solubilizing systems for silymarin. Drug Deliv Transl Res 2024; 14:1616-1634. [PMID: 37964172 DOI: 10.1007/s13346-023-01476-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2023] [Indexed: 11/16/2023]
Abstract
Silymarin (SM) exhibits clinical efficacy in treating liver injuries, cirrhosis, and chronic hepatitis. However, its limited water solubility and low bioavailability hinder its therapeutic potential. The primary objective of this study was to compare the in vitro and in vivo characteristics of the four distinct SM solubilization systems, namely SM solid dispersion (SM-SD), SM phospholipid complex (SM-PC), SM sulfobutyl ether-β-cyclodextrin inclusion complex (SM-SBE-β-CDIC) and SM self-microemulsifying drug delivery system (SM-SMEDDS) to provide further insights into their potential for enhancing the solubility and bioavailability of SM. The formation of SM-SD, SM-PC, and SM-SBE-β-CDIC was thoroughly characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and powder X-ray diffractometry (PXRD) techniques to analyze the changes in their microscopic structure, molecular structure, and crystalline state. The particle size and polydispersity index (PDI) of SM-SMEDDS were 71.6 ± 1.57 nm, and 0.13 ± 0.03, respectively. The self-emulsifying time of SM-SMEDDS was 3.0 ± 0.3 min. SM-SMEDDS exhibited an improved in vitro dissolution rate and demonstrated the highest relative bioavailability compared to pure SM, SM-SD, SM-PC, SM-SBE-β-CDIC, and Legalon®. Consequently, SMEDDS shows promise as a drug delivery system for orally administered SM, offering enhanced solubility and bioavailability.
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Affiliation(s)
- Zhenzhen Chen
- Department of Pharmacy, Fuzong Clinical Medical College of Fujian Medical University (900 Hospital of the Joint Logistics Team), Fuzhou, 350025, PR China
| | - Wenhao Gao
- Department of Pharmacy, Fuzong Clinical Medical College of Fujian Medical University (900 Hospital of the Joint Logistics Team), Fuzhou, 350025, PR China
| | - Xianquan Feng
- Department of Pharmacy, Fuzong Clinical Medical College of Fujian Medical University (900 Hospital of the Joint Logistics Team), Fuzhou, 350025, PR China
| | - Guizhi Zhou
- Department of Pharmacy, Fuzong Clinical Medical College of Fujian Medical University (900 Hospital of the Joint Logistics Team), Fuzhou, 350025, PR China
- School of Pharmacy, Fujian University of Chinese Traditional Medicine, Fuzhou, 350108, China
| | - Minxin Zhang
- Department of Pharmacy, Fuzong Clinical Medical College of Fujian Medical University (900 Hospital of the Joint Logistics Team), Fuzhou, 350025, PR China
| | - Lingjun Zeng
- Department of Pharmacy, Fuzong Clinical Medical College of Fujian Medical University (900 Hospital of the Joint Logistics Team), Fuzhou, 350025, PR China
| | - Xiaomu Hu
- Department of Pharmacy, Fuzong Clinical Medical College of Fujian Medical University (900 Hospital of the Joint Logistics Team), Fuzhou, 350025, PR China
| | - Zhihong Liu
- Department of Pharmacy, Fuzong Clinical Medical College of Fujian Medical University (900 Hospital of the Joint Logistics Team), Fuzhou, 350025, PR China.
| | - Hongtao Song
- Department of Pharmacy, Fuzong Clinical Medical College of Fujian Medical University (900 Hospital of the Joint Logistics Team), Fuzhou, 350025, PR China.
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Khizar N, Abbas N, Ahmed M, Ahmad M, Mustafa Z, Jehangir M, Mohammed Al-Ahmary K, Hussain A, Bukhari NI, Ali I. Amelioration of tableting properties and dissolution rate of naproxen co-grinded with nicotinamide: preparation and characterization of co-grinded mixture. Drug Dev Ind Pharm 2024; 50:537-549. [PMID: 38771120 DOI: 10.1080/03639045.2024.2358356] [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: 12/17/2023] [Accepted: 05/17/2024] [Indexed: 05/22/2024]
Abstract
OBJECTIVE AND SIGNIFICANCE Reducing the dimensions, when other additives are present, shows potential as a method to improve the dissolution and solubility of biopharmaceutical classification system class II drugs that have poor solubility. In this investigation, the process involved grinding naproxen with nicotinamide with the aim of improving solubility and the rate of dissolution. METHODS Naproxen was subjected to co-milling with urea, dimethylurea, and nicotinamide using a planetary ball mill for a duration of 90 min, maintaining a 1:1 molar ratio for the excipients (screening studies). The co-milled combinations, naproxen in its pure milled form, and a physical mixture were subjected to analysis using X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), and solubility assessment. The mixture displaying the highest solubility (naproxen-nicotinamide) was chosen for further investigation, involving testing for intrinsic dissolution rate (IDR) and Fourier-transform infrared spectroscopy (FTIR) after co-milling for both 90 and 480 min. RESULTS AND CONCLUSION The co-milled combination, denoted as S-3b and consisting of the most substantial ratio of nicotinamide to naproxen at 1:3, subjected to 480 min of milling, exhibited a remarkable 45-fold increase in solubility and a 9-fold increase in IDR. XRPD analysis of the co-milled samples demonstrated no amorphization, while SEM images portrayed the aggregates of naproxen with nicotinamide. FTIR outcomes negate the presence of any chemical interactions between the components. The co-milled sample exhibiting the highest solubility and IDR was used to create a tablet, which was then subjected to comprehensive evaluation for standard attributes. The results revealed improved compressibility and dissolution properties.
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Affiliation(s)
- Nosheen Khizar
- University College of Pharmacy, University of the Punjab, Lahore, Pakistan
| | - Nasir Abbas
- University College of Pharmacy, University of the Punjab, Lahore, Pakistan
| | - Mahmood Ahmed
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Muhammad Ahmad
- Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan
| | - Zeeshan Mustafa
- Department of Physics, Lahore Garrison University, Lahore, Pakistan
| | - Muhammad Jehangir
- Department of Chemistry, FC College (A Chartered University), Lahore, Pakistan
| | | | - Amjad Hussain
- University College of Pharmacy, University of the Punjab, Lahore, Pakistan
| | | | - Ijaz Ali
- Centre for Applied Mathematics and Bioinformatics (CAMB), Gulf University for Science and Technology, Hawally, Kuwait
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36
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Wang L, Wu H, Wang Z, Ding Z, Zhao Y, Li S, Zhang H, Jia G, Gao L, Han J. Effects of hypromellose acetate succinate on recrystallization inhibition, miscibility, and dissolution enhancement of baloxavir marboxil solid dispersions. Int J Biol Macromol 2024; 269:132050. [PMID: 38777690 DOI: 10.1016/j.ijbiomac.2024.132050] [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: 01/28/2024] [Revised: 04/22/2024] [Accepted: 05/01/2024] [Indexed: 05/25/2024]
Abstract
Solid dispersions (SDs) have emerged as a promising strategy to enhance the solubility and bioavailability of poorly soluble active pharmaceutical ingredients. However, SDs tend to recrystallize unless suitable excipients are utilized. This study aimed to facilitate the rational selection of polymers and formulation design by evaluating the impact of various polymers on the miscibility, and phase behavior of SDs using baloxavir marboxil (BXM) with a high crystallization tendency as a model drug. Meanwhile, the effects of these polymers on the solubility enhancement and recrystallization inhibition were also assessed. The results indicated that the miscibility limit of BXM for HPMCAS was around 40 % drug loading (DL), whereas for PVP, PVPVA, and HPMC approximately 20 % DL. The BXM-HPC system exhibited limited miscibility with DL of 10 % or higher. BXM SDs based on various polymers exhibited varying degrees of spontaneous phase separation once DL exceeded the miscibility limit. Interestingly, a correlation was discovered between the phase separation behavior and the ability of the polymer to inhibit recrystallization. BXM-HPMCAS SDs exhibited optimal dissolution performance, compared with other systems. In conclusion, the physicochemical properties of polymers significantly influence BXM SDs performance and the BXM-HPMCAS SDs might promote an efficient and stable drug delivery system.
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Affiliation(s)
- Lili Wang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China; Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, Shandong 252000, China
| | - Hengqian Wu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| | - Zhengping Wang
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, Shandong 252000, China
| | - Zhuang Ding
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, Shandong 252000, China
| | - Yanna Zhao
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, Shandong 252000, China
| | - Suye Li
- Institute of Pharmaceutical Research, Shandong University of Traditional Chinese Medicine, Jinan, Shandong 250355, China
| | - Heng Zhang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| | - Guangwei Jia
- Key Laboratory of Clinical Pharmacology, Liaocheng People's Hospital, Liaocheng, Shandong 252000, China
| | - Lingfeng Gao
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China
| | - Jun Han
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, China; Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, Shandong 252000, China.
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37
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Petrova SP, Mohamed MA, Wu H, Taylor LS, Edgar KJ. Threading the needle: Achieving simplicity and performance in cellulose alkanoate ω-carboxyalkanoates for amorphous solid dispersion. Carbohydr Polym 2024; 333:121988. [PMID: 38494207 DOI: 10.1016/j.carbpol.2024.121988] [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: 10/31/2023] [Revised: 02/07/2024] [Accepted: 02/24/2024] [Indexed: 03/19/2024]
Abstract
Most active pharmaceutical ingredients (APIs) suffer from poor water solubility, often keeping them from reaching patients. To overcome the issues of poor drug solubility and subsequent low bioavailability, amorphous solid dispersions (ASDs) have garnered much attention. Cellulose ester derivatives are of interest for ASD applications as they are benign, sustainable-based, and successful in commercial drug delivery systems, e.g. in osmotic pump systems and as commercial ASD polymers. Synthesis of carboxy-pendant cellulose esters is a challenge, due in part to competing reactions between carboxyls and hydroxyls, forming ester crosslinks. Herein we demonstrate proof-of-concept for a scalable synthetic route to simple, yet highly promising ASD polymers by esterifying cellulose polymers through ring-opening of cyclic succinic or glutaric anhydride. We describe the complexity of such ring-opening reactions, not previously well-described, and report ways to avoid gelation. We report synthesis, characterization, and preliminary in vitro ASD evaluations of fifteen such derivatives. Synthetic routes were designed to accommodate these criteria: no protecting groups, no metal catalysts, mild conditions with standard reagents, simple purification, and one-pot synthesis. Finally, these designed ASD polymers included members that maintained fast-crystallizing felodipine in solution and release it from an ASD at rather high 20 % drug loading (DL).
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Affiliation(s)
- Stella P Petrova
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, United States of America; Department of Sustainable Biomaterials, Virginia Tech, Blacksburg, VA 24061, United States of America.
| | - Mennatallah A Mohamed
- Department of Industrial and Molecular Pharmaceutics, Purdue University, West Lafayette, IN 47907, United States of America
| | - Huiming Wu
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, United States of America
| | - Lynne S Taylor
- Department of Industrial and Molecular Pharmaceutics, Purdue University, West Lafayette, IN 47907, United States of America
| | - Kevin J Edgar
- Department of Sustainable Biomaterials, Virginia Tech, Blacksburg, VA 24061, United States of America; Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, United States of America.
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Lee J, Han CH, Oh IH, Allu S, Kim HJ, Kim J, Kim WS, Park BJ. Fabrication and evaluation of stable amorphous polymer-drug composite particles via a nozzle-free ultrasonic nebulizer. Int J Pharm 2024; 657:124177. [PMID: 38697582 DOI: 10.1016/j.ijpharm.2024.124177] [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: 10/02/2023] [Revised: 04/09/2024] [Accepted: 04/28/2024] [Indexed: 05/05/2024]
Abstract
We present a promising method for producing amorphous drug particles using a nozzle-free ultrasonic nebulizer with polymers, specifically polyvinylpyrrolidone (PVP), poly(acrylic acid) (PAA), and Eudragit® S 100 (EUD). Model crystalline phase drugs-Empagliflozin, Furosemide, and Ilaprazole-are selected. This technique efficiently produces spherical polymer-drug composite particles and demonstrates enhanced stability against humidity and thermal conditions, compared to the drug-only amorphous particles. The composite particles exhibit improved water dissolution compared to the original crystalline drugs, indicating potential bioavailability enhancements. While there are challenges, including the need for continuous water supply for ultrasonic component cooling, dependency on the solubility of polymers and drugs in volatile organic solvents, and mildly elevated temperatures for solvent evaporation, our method offers significant advantages over traditional approaches. It provides a straightforward, flexible process adaptable to various drug-polymer combinations and consistently yields spherical amorphous solid dispersion (ASD) particles with a narrow size distribution. These attributes make our method a valuable advancement in pharmaceutical drug formulation and delivery.
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Affiliation(s)
- Jieun Lee
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin 17104, South Korea
| | - Chang Hun Han
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin 17104, South Korea
| | - In Hwan Oh
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin 17104, South Korea
| | - Suryanarayana Allu
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin 17104, South Korea.
| | - Hee Jin Kim
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin 17104, South Korea
| | - Jinsoo Kim
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin 17104, South Korea
| | - Woo-Sik Kim
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin 17104, South Korea.
| | - Bum Jun Park
- Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin 17104, South Korea.
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Leon ASC, Waterman KC, Wang G, Wang L, Cai T, Zhang X. Accelerated stability modeling of recrystallization from amorphous solid Dispersions: A Griseofulvin/HPMC-AS case study. Int J Pharm 2024; 657:124189. [PMID: 38701906 DOI: 10.1016/j.ijpharm.2024.124189] [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: 12/31/2023] [Revised: 04/14/2024] [Accepted: 04/30/2024] [Indexed: 05/05/2024]
Abstract
Amorphous solid dispersions (ASDs) represent an important approach for enhancing oral bioavailability for poorly water soluble compounds; however, assuring that these ASDs do not recrystallize to a significant extent during storage can be time-consuming. Therefore, various efforts have been undertaken to predict ASD crystallization levels with kinetic models. However, only limited success has been achieved due to limits on crystal content quantification methods and the complexity of crystallization kinetics. To increase the prediction accuracy, the accelerated stability assessment program (ASAP), employing isoconversion (time to hit a specification limit) and a modified Arrhenius approach, are employed here for predictive shelf-life modeling. In the current study, a model ASD was prepared by spray drying griseofulvin and HPMC-AS-LF. This ASD was stressed under a designed combinations of temperature, relative humidity and time with the conditions set to ensure stressing was carried out below the glass transition temperature (Tg) of the ASD. Crystal content quantification method by X-ray powder diffraction (XRPD) with sufficient sensitivity was developed and employed for stressed ASD. Crystallization modeling of the griseofulvin ASD using ASAPprime® demonstrated good agreement with long-term (40 °C/75 %RH) crystallinity levels and support the use of this type of accelerated stability studies for further improving ASD shelf-life prediction accuracy.
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Affiliation(s)
| | | | - Guanhua Wang
- Level 2, Block C3, Maple Science Park, Qixia District, Nanjing 210048 China
| | - Likun Wang
- Level 2, Block C3, Maple Science Park, Qixia District, Nanjing 210048 China.
| | - Ting Cai
- China Pharmaceutical University, 24 Tongjiaxiang Road, Nanjing 210009 China
| | - Xiaohua Zhang
- 99 HengGuang Road, Nanjing Development Zone, Nanjing 210038 China
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Tipduangta P, Chansakaow S, Tansakul P, Meungjai R, Dilokthornsakul P. Polymer Matrix and Manufacturing Methods in Solid Dispersion System for Enhancing Andrographolide Solubility and Absorption: A Systematic Review. Pharmaceutics 2024; 16:688. [PMID: 38794350 PMCID: PMC11125128 DOI: 10.3390/pharmaceutics16050688] [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: 04/02/2024] [Revised: 05/13/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024] Open
Abstract
Background: Andrographolide (ADG) has poor aqueous solubility and low bioavailability. This study systematically reviews the use of solid dispersion (SD) techniques to enhance the solubility and absorption of ADG, with a focus on the methods and polymers utilized. Methodology: We searched electronic databases including PubMed, Web of Science, Scopus®, Embase and ScienceDirect Elsevier® up to November 2023 for studies on the solubility or absorption of ADG in SD formulations. Two reviewers independently reviewed the retrieved articles and extracted data using a standardized form and synthesized the data qualitatively. Results: SD significantly improved ADG solubility with up to a 4.7-fold increase and resulted in a decrease in 50% release time (T1/2) to less than 5 min. SD could also improve ADG absorption, as evidenced by higher Cmax and AUC and reduced Tmax. Notably, Soluplus-based SDs showed marked solubility and absorption enhancements. Among the five SD techniques (rotary evaporation, spray drying, hot-melt extrusion, freeze drying and vacuum drying) examined, spray drying emerged as the most effective, enabling a one-step process without the need for post-milling. Conclusions: SD techniques, particularly using Soluplus and spray drying, effectively enhance the solubility and absorption of ADG. This insight is vital for the future development of ADG-SD matrices.
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Affiliation(s)
- Pratchaya Tipduangta
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; (P.T.); (S.C.); (R.M.)
- The College of Herbal Pharmacy of Thailand, The Pharmacy Council of Thailand, Nonthaburi 11000, Thailand
| | - Sunee Chansakaow
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; (P.T.); (S.C.); (R.M.)
- The College of Herbal Pharmacy of Thailand, The Pharmacy Council of Thailand, Nonthaburi 11000, Thailand
| | - Pimpimon Tansakul
- The College of Herbal Pharmacy of Thailand, The Pharmacy Council of Thailand, Nonthaburi 11000, Thailand
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla 90110, Thailand;
| | - Rungarun Meungjai
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand; (P.T.); (S.C.); (R.M.)
| | - Piyameth Dilokthornsakul
- Center for Medical and Health Technology Assessment (CM-HTA), Department of Pharmaceutical Care, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
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41
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Liu X, Zhang M, Zhou X, Wan M, Cui A, Xiao B, Yang J, Liu H. Research advances in Zein-based nano-delivery systems. Front Nutr 2024; 11:1379982. [PMID: 38798768 PMCID: PMC11119329 DOI: 10.3389/fnut.2024.1379982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/15/2024] [Indexed: 05/29/2024] Open
Abstract
Zein is the main vegetable protein from maize. In recent years, Zein has been widely used in pharmaceutical, agriculture, food, environmental protection, and other fields because it has excellent biocompatibility and biosafety. However, there is still a lack of systematic review and research on Zein-based nano-delivery systems. This paper systematically reviews preparation and modification methods of Zein-based nano-delivery systems, based on the basic properties of Zein. It discusses the preparation of Zein nanoparticles and the influencing factors in detail, as well as analyzing the advantages and disadvantages of different preparation methods and summarizing modification methods of Zein nanoparticles. This study provides a new idea for the research of Zein-based nano-delivery system and promotes its application.
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Affiliation(s)
- Xiaoxuan Liu
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Minhong Zhang
- Department of Clinical Medicine Research Center, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Ganzhou Key Laboratory of Antitumor Effects of Natural Products, Ganzhou, China
| | - Xuelian Zhou
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Mengjiao Wan
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Aiping Cui
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Bang Xiao
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Jianqiong Yang
- Department of Clinical Medicine Research Center, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Ganzhou Key Laboratory of Antitumor Effects of Natural Products, Ganzhou, China
| | - Hai Liu
- College of Pharmacy, Gannan Medical University, Ganzhou, China
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42
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Wu D, Liu J, Paragas EM, Yadav J, Aliwarga T, Heimbach T, Escotet-Espinoza MS. Assessing and mitigating pH-mediated DDI risks in drug development - formulation approaches and clinical considerations. Drug Metab Rev 2024:1-20. [PMID: 38700278 DOI: 10.1080/03602532.2024.2345632] [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: 11/28/2023] [Accepted: 04/10/2024] [Indexed: 05/05/2024]
Abstract
pH-mediated drug-drug interactions (DDI) is a prevalent DDI in drug development, especially for weak base compounds with highly pH-dependent solubility. FDA has released a guidance on the evaluation of pH-mediated DDI assessments using in vitro testing and clinical studies. Currently, there is no common practice of ways of testing across the academia and industry. The development of biopredictive method and physiologically-based biopharmaceutics modeling (PBBM) approaches to assess acid-reducing agent (ARA)-DDI have been proven with accurate prediction and could decrease drug development burden, inform clinical design and potentially waive clinical studies. Formulation strategies and careful clinical design could help mitigate the pH-mediated DDI to avoid more clinical studies and label restrictions, ultimately benefiting the patient. In this review paper, a detailed introduction on biorelevant dissolution testing, preclinical and clinical study requirement and PBPK modeling approaches to assess ARA-DDI are described. An improved decision tree for pH-mediated DDI is proposed. Potential mitigations including clinical or formulation strategies are discussed.
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Affiliation(s)
- Di Wu
- Pharmaceutical Sciences & Clinical Supply, Merck & Co., Inc, Rahway, NJ, USA
| | - Jiaying Liu
- Pharmaceutical Sciences & Clinical Supply, Merck & Co., Inc, Rahway, NJ, USA
| | - Erickson M Paragas
- Pharmacokinetics and Drug Metabolism Department, Amgen Research, South San Francisco, CA, USA
| | - Jaydeep Yadav
- Pharmacokinetics, Pharmacodynamics, and Drug Metabolism, Merck & Co., Inc, Boston, MA, USA
| | - Theresa Aliwarga
- Pharmacokinetics and Drug Metabolism Department, Amgen Research, South San Francisco, CA, USA
| | - Tycho Heimbach
- Pharmaceutical Sciences & Clinical Supply, Merck & Co., Inc, Rahway, NJ, USA
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43
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Patel K, Kevlani V, Shah S. A novel Posaconazole oral formulation using spray dried solid dispersion technology: in-vitro and in-vivo study. Drug Deliv Transl Res 2024; 14:1253-1276. [PMID: 37952081 DOI: 10.1007/s13346-023-01461-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2023] [Indexed: 11/14/2023]
Abstract
SD (solid dispersion) technology is one of the well-recognized solubility enhancement methods; but the use of versatile carriers in ASD (amorphous SD) to achieve the added advantage of modified release along with solubility improvement is an emerging area of exploration. Spray drying is a widely used technology with excellent scalability and product attributes. The SD carriers explored were Soluplus®, possessing excellent solubilization properties that may enhance bioavailability and is suitable for innovative processing, and Gelucire 43/01, a lipid polymer utilized in a non-effervescent-based floating gastro-retentive DDS for the modified release of API. The CPPs of spray drying were screened during preliminary trials, and the formulation variables were optimized using a 32 Full Factorial Design. All nine batches were evaluated for % yield, % drug content, flow properties, floating behavior, saturation solubility, and in-vitro drug release in 0.1 N HCl. The optimized batch characterized based on DSC (differential scanning calorimetry) and PXRD (powder X-ray diffraction) confirmed the amorphous nature of entrapped drug in SDD (spray-dried dispersion). Particle size analysis and SEM (scanning electron microscopy) demonstrated micron size irregular shaped particles. Residual solvent analysis by GCMS-HS confirmed the elimination of organic solvents from SDD. The optimized batch was found stable after 6 months stability study as per ICH guidelines. In-vivo roentgenography study in New Zealand white rabbit showed the residence of SDD in gastric environment for sufficient time. The pharmacokinetic study was performed in male Sprague-Dawley rats to determine the bioavailability of developed SDD based product in fasting and fed conditions, and to compare the data with marketed Noxafil formulation. The current research is focused on the development of a novel ternary SDD (spray-dried dispersion)-based gastro-retentive formulation for an anti-fungal drug Posaconazole.
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Affiliation(s)
- Kaushika Patel
- Department of Pharmaceutical Technology, L. J. Institute of Pharmacy, L J University, Ahmedabad, 382 210, India
- Gujarat Technological University, Ahmedabad, India
| | - Vijay Kevlani
- Department of Pharmacology, L. J. Institute of Pharmacy, L J University, Ahmedabad, 382 210, India
| | - Shreeraj Shah
- Department of Pharmaceutical Technology, L. J. Institute of Pharmacy, L J University, Ahmedabad, 382 210, India.
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44
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Autzen Virtanen A, Myślińska M, Healy AM, Power E, Madi A, Sivén M. The challenge of downstream processing of spray dried amorphous solid dispersions into minitablets designed for the paediatric population - A sustainable product development approach. Eur J Pharm Sci 2024; 196:106752. [PMID: 38518998 DOI: 10.1016/j.ejps.2024.106752] [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: 10/17/2023] [Revised: 03/08/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
Poorly water-soluble drugs present a significant challenge in the development of oral solid dosage forms (OSDs). In formulation development the appropriate use of excipients to adjust solubility, and the choice of manufacturing method and pharmaceutical processes to obtain a dosage form to meet the needs of the patient group, is crucial. Preparing an amorphous solid dispersion (ASD) is a well-established method for solubility enhancement, and spray drying (SD) a common manufacturing method. However, the poor flowability of spray dried materials poses a significant challenge for downstream processing. Promoting sustainability in OSD development involves embracing a versatile formulation design, which enables a broader spectrum of patients to use the product, as opposed to altering existing dosage forms retrospectively. The objective of the current study was to develop a formulation of spray dried indomethacin ASD suited to the production, by direct compression, of instant release paediatric minitablets. Excipients evaluated were PVP or HPMCAS in solid dispersions at the preformulation phase, and MCC and lactose as a filler in direct compression. From the studied formulations, a 3:1 ratio blend of Vivapur 200/Pharmatose 200 M (MCC/lactose) with 0.5% (w/w) magnesium stearate was found to be the most promising in tableting, and minitablets containing a 6.22% content of spray-dried ASD of indomethacin/PVP K 29-32 could be obtained with desired tablet hardness and pharmaceutical quality, complying with tests of weight variation and fast disintegration in an aqueous environment. As a case example, this study provides a good foundation for further studies in harnessing a sustainable approach to the development of pharmaceutical formulations that can appropriately serve different patient sub-populations.
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Affiliation(s)
- Anja Autzen Virtanen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Finland.
| | - Monika Myślińska
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Ireland; SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, Ireland
| | - Anne Marie Healy
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Ireland; SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, Ireland
| | - Eoin Power
- SK biotek Ireland, an SK pharmteco company, Ireland
| | - Atif Madi
- SK biotek Ireland, an SK pharmteco company, Ireland
| | - Mia Sivén
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Finland; Helsinki Institute of Sustainability Science, HELSUS, Finland
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45
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Barr KE, Ohnsorg ML, Liberman L, Corcoran LG, Sarode A, Nagapudi K, Feder CR, Bates FS, Reineke TM. Drug-Polymer Nanodroplet Formation and Morphology Drive Solubility Enhancement of GDC-0810. Bioconjug Chem 2024; 35:499-516. [PMID: 38546823 DOI: 10.1021/acs.bioconjchem.4c00018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
Nanodroplet formation is important to achieve supersaturation of active pharmaceutical ingredients (APIs) in an amorphous solid dispersion. The aim of the current study was to explore how polymer composition, architecture, molar mass, and surfactant concentration affect polymer-drug nanodroplet morphology with the breast cancer API, GDC-0810. The impact of nanodroplet size and morphology on dissolution efficacy and drug loading capacity was explored using polarized light microscopy, dynamic light scattering, and cryogenic transmission electron microscopy. Poly(N-isopropylacrylamide-stat-N,N-dimethylacrylamide) (PND) was synthesized as two linear derivatives and two bottlebrush derivatives with carboxylated or PEGylated end-groups. Hydroxypropyl methylcellulose acetate succinate grade MF (HPMCAS-MF) and poly(vinylpyrrolidone-co-vinyl acetate) (PVPVA) were included as commercial polymer controls. We report the first copolymerization synthesis of a PVPVA bottlebrush copolymer, which was the highest performing excipient in this study, maintaining 688 μg/mL GDC-0810 concentration at 60 wt % drug loading. This is likely due to strong polymer-drug noncovalent interactions and the compaction of GDC-0810 along the PVPVA bottlebrush backbone. Overall, it was observed that the most effective formulations had a hydrodynamic radius less than 25 nm with tightly compacted nanodroplet morphologies.
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Affiliation(s)
- Kaylee E Barr
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Monica L Ohnsorg
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Lucy Liberman
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Louis G Corcoran
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Apoorva Sarode
- Synthetic Molecule Pharmaceutical Sciences, Genentech, Inc., South San Francisco, California 94080, United States
| | - Karthik Nagapudi
- Synthetic Molecule Pharmaceutical Sciences, Genentech, Inc., South San Francisco, California 94080, United States
| | - Christina R Feder
- Synthetic Molecule Pharmaceutical Sciences, Genentech, Inc., South San Francisco, California 94080, United States
| | - Frank S Bates
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Theresa M Reineke
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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46
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Dhumal G, Treffer D, Polli JE. Concordance of vacuum compression molding with spray drying in screening of amorphous solid dispersions of itraconazole. Int J Pharm 2024; 654:123952. [PMID: 38417729 DOI: 10.1016/j.ijpharm.2024.123952] [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: 12/15/2023] [Revised: 02/19/2024] [Accepted: 02/25/2024] [Indexed: 03/01/2024]
Abstract
Spray drying is a well-established method for screening spray dried dispersions (SDDs) but is material consuming, and the amorphous solid dispersions (ASDs) formed have low bulk density. Vacuum Compression Molding (VCM) is a potential method to avoid these limitations. This study focuses on VCM to screen ASDs containing itraconazole and L, M, or H polymer grades of hydroxypropyl methylcellulose acetate succinate (HPMCAS) and compares their morphology, amorphous stability, and dissolution performance with spray drying. Results indicate that VCM ASDs were comparable to SDDs. Both VCM ASDs and spray drying SDDs with HPMCAS-L and HPMCAS-M had improved dissolution profiles, while HPMCAS-H did not. Dynamic light scattering findings agreed with dissolution profiles, indicating that L and M grades produced monodisperse, smaller colloids, whereas H grade formed larger, polydisperse colloids. Capsules containing ASDs from VCM disintegrated and dissolved in the media; however, SDD capsules formed agglomerates and failed to disintegrate completely. Findings indicate that the VCM ASDs are comparable to SDDs in terms of dissolution performance and amorphous stability. VCM may be utilized in early ASD formulation development to select drug-polymer pairs for subsequent development.
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Affiliation(s)
- Gaurav Dhumal
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD, United States
| | - Daniel Treffer
- MeltPrep, Setauket - East Setauket, New York, United States
| | - James E Polli
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD, United States.
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47
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Yu D, Hoag SW. The impact of diluents on the compaction, dissolution, and physical stability of amorphous solid dispersion tablets. Int J Pharm 2024; 654:123924. [PMID: 38395318 DOI: 10.1016/j.ijpharm.2024.123924] [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: 11/23/2023] [Revised: 02/09/2024] [Accepted: 02/18/2024] [Indexed: 02/25/2024]
Abstract
Amorphous solid dispersion (ASD) is an effective approach for enhancing the solubility, dissolution, and bioavailability of poorly water-soluble drugs. However, these metastable forms can transform into more thermodynamically stable but less soluble crystalline forms. Despite this challenge, research on processing ASDs into solid dosage forms, such as tablets, is lacking. This work aims to fill this gap by investigating the impact of common diluents on the tableting behavior, dissolution, and physical stability of ASDs composed of itraconazole and hypromellose acetate succinate. Four widely used diluents found in commercially available ASD tablets were selected for the study: microcrystalline cellulose (MCC), anhydrous lactose, starch, and mannitol. The performance of ASD tablets varied significantly depending on the diluent used. Tablets prepared with MCC exhibited higher mechanical strength than those formulated using other diluents. ASD tablets containing mannitol and lactose revealed a faster release rate than those composed of MCC or starch. Notably, the study highlighted that the physical stability of ASDs within a tablet is not solely dependent on the amount of sorbed water; crystalline diluents like lactose and mannitol were found to facilitate ASD recrystallization within a tablet. In summary, the study underscores the importance of excipient selection, considering factors such as mechanical strength, dissolution rate, and physical stability of ASD tablets. These findings offer valuable insights into the selection of excipients for downstream ASD tablet development, leading to improved manufacturability, physical stability, and the overall quality of ASD drug products.
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Affiliation(s)
- Dongyue Yu
- University of Maryland, Baltimore, School of Pharmacy, Baltimore, MD 21201, United States
| | - Stephen W Hoag
- University of Maryland, Baltimore, School of Pharmacy, Baltimore, MD 21201, United States.
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48
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Tomas M, Wen Y, Liao W, Zhang L, Zhao C, McClements DJ, Nemli E, Bener M, Apak R, Capanoglu E. Recent progress in promoting the bioavailability of polyphenols in plant-based foods. Crit Rev Food Sci Nutr 2024:1-22. [PMID: 38590257 DOI: 10.1080/10408398.2024.2336051] [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: 04/10/2024]
Abstract
Polyphenols are important constituents of plant-based foods, exhibiting a range of beneficial effects. However, many phenolic compounds have low bioavailability because of their low water solubility, chemical instability, food matrix effects, and interactions with other nutrients. This article reviews various methods of improving the bioavailability of polyphenols in plant-based foods, including fermentation, natural deep eutectic solvents, encapsulation technologies, co-crystallization and amorphous solid dispersion systems, and exosome complexes. Several innovative technologies have recently been deployed to improve the bioavailability of phenolic compounds. These technologies may be utilized to increase the healthiness of plant-based foods. Further research is required to better understand the mechanisms of action of these novel approaches and their potential to be used in food production.
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Affiliation(s)
- Merve Tomas
- Department of Food Engineering, Istanbul Technical University, Maslak, Istanbul, Türkiye
| | - Yuxi Wen
- College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Wei Liao
- College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lizhu Zhang
- College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Chao Zhao
- College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | | | - Elifsu Nemli
- Department of Food Engineering, Istanbul Technical University, Maslak, Istanbul, Türkiye
| | - Mustafa Bener
- Department of Chemistry, Faculty of Science, Istanbul University, Istanbul, Türkiye
| | - Resat Apak
- Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpasa, Istanbul, Türkiye
- Turkish Academy of Sciences (TUBA), Ankara, Türkiye
| | - Esra Capanoglu
- Department of Food Engineering, Istanbul Technical University, Maslak, Istanbul, Türkiye
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49
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Danda LJDA, Amaral ARDC, Soares-Sobrinho JL, Soares MFDLR. Optimizing Nonsink Dissolution Testing for Amorphous Solid Dispersions: Exploring Sample Handling Variables. Mol Pharm 2024; 21:1861-1871. [PMID: 38416030 DOI: 10.1021/acs.molpharmaceut.3c01164] [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: 02/29/2024]
Abstract
This study aims to investigate key variables affecting the dissolution of amorphous pharmaceuticals. We examined sample treatment methods (centrifugation vs syringe filtration), time delays between sample collection and processing (immediate, 2, or 24 h), and different sample preparations (bare powder, capsules, or tablets). These factors were evaluated through both sink and nonsink dissolution experiments, using controlled supersaturation conditions (sink index ≈ 0.1) with amorphous solid dispersions (ASDs) containing low-substituted hydroxypropyl cellulose (L-HPC) and either indomethacin or posaconazole as model drugs. Our results highlighted the significant impact of syringe filtration on nonsink dissolutions, particularly the notable reduction in dissolved drug concentration, possibly due to filtration-induced precipitation. Moreover, introducing a delay of 2 or 24 h between sample collection and quantitation under nonsink conditions led to substantial concentration changes. This effect was not as pronounced when samples underwent centrifugation, and only the analysis was delayed for 2 h. The findings also emphasize the importance of accounting for delays introduced by pharmaceutical formulations, particularly in assessing the kinetic-solubility profiles of ASDs. This research offers valuable insights into the field of ASDs, enhancing our understanding of how these variables can influence dissolution results.
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50
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Svoboda R, Kozlová K. Thermo-Structural Characterization of Phase Transitions in Amorphous Griseofulvin: From Sub-T g Relaxation and Crystal Growth to High-Temperature Decomposition. Molecules 2024; 29:1516. [PMID: 38611796 PMCID: PMC11013327 DOI: 10.3390/molecules29071516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/23/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
The processes of structural relaxation, crystal growth, and thermal decomposition were studied for amorphous griseofulvin (GSF) by means of thermo-analytical, microscopic, spectroscopic, and diffraction techniques. The activation energy of ~395 kJ·mol-1 can be attributed to the structural relaxation motions described in terms of the Tool-Narayanaswamy-Moynihan model. Whereas the bulk amorphous GSF is very stable, the presence of mechanical defects and micro-cracks results in partial crystallization initiated by the transition from the glassy to the under-cooled liquid state (at ~80 °C). A key aspect of this crystal growth mode is the presence of a sufficiently nucleated vicinity of the disrupted amorphous phase; the crystal growth itself is a rate-determining step. The main macroscopic (calorimetrically observed) crystallization process occurs in amorphous GSF at 115-135 °C. In both cases, the common polymorph I is dominantly formed. Whereas the macroscopic crystallization of coarse GSF powder exhibits similar activation energy (~235 kJ·mol-1) as that of microscopically observed growth in bulk material, the activation energy of the fine GSF powder macroscopic crystallization gradually changes (as temperature and/or heating rate increase) from the activation energy of microscopic surface growth (~105 kJ·mol-1) to that observed for the growth in bulk GSF. The macroscopic crystal growth kinetics can be accurately described in terms of the complex mechanism, utilizing two independent autocatalytic Šesták-Berggren processes. Thermal decomposition of GSF proceeds identically in N2 and in air atmospheres with the activation energy of ~105 kJ·mol-1. The coincidence of the GSF melting temperature and the onset of decomposition (both at 200 °C) indicates that evaporation may initiate or compete with the decomposition process.
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Affiliation(s)
- Roman Svoboda
- Department of Physical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic;
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