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Zhang L, Zhang L, Wei C, Wang S, Xu J, Yin Z, Yang Y, Li S, Dong Q, Deng Z, Chen L, Liu C, Ding D, Chen Z. Constructing Ultra-Strong SERS Tags in the Cellular Raman-Silent Region by Orthogonal Array Testing Strategy. Anal Chem 2024; 96:9051-9059. [PMID: 38776068 DOI: 10.1021/acs.analchem.4c00551] [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: 06/05/2024]
Abstract
Surface-enhanced Raman spectroscopy (SERS) tags have the advantages of unique fingerprint vibration spectrum, ultranarrow spectral line widths, and weak photobleaching effect, showing great potential for bioimaging. However, SERS imaging is still hindered for further application due to its weak spontaneous Raman scattering, biomolecular signal interference, and long acquisition times. Here, we develop a novel SERS tag of the core (Au)-shell (N-doped graphene) structure (Au@NGs) with ultrastrong and stable Raman signal (2180 cm-1) in the cellular Raman-silent region (1800-2800 cm-1) through base-promoted oxidative decarboxylation of amino acids. Exploring the factors (metal salts, amino acids, catalysts, temperature, etc.) to obtain Au@NGs with the strongest Raman signal commonly requires more than 100,000 separate experiments, while that using an orthogonal array testing strategy is reduced to 56. The existence of deep charge transfer between the Au surface and C≡N-graphene is proved by theoretical calculations, which means the ultrastrong signal of Au@NGs is the joint effect of electromagnetic and chemical enhancement. The Au@NGs have a detection sensitivity down to a single-nanoparticle level, and high-speed and high-resolution cellular imaging (4453 pixels) is obtained within 10 s by global Raman imaging. The combination of Au@NGs-based tags with ultrastrong intrinsic Raman imaging capability and global imaging technology holds great promise for high-speed Raman imaging.
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Affiliation(s)
- Liang Zhang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
- Department of Inspection, Medical Faculty, Qingdao University, Qingdao 266003, People's Republic of China
| | - Lufeng Zhang
- College of Pharmacy, Heze University, Heze, Shandong 274015, China
| | - Chundi Wei
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Shen Wang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Jieqiong Xu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Zhiwei Yin
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Yanxia Yang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Shengkai Li
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Qian Dong
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Zhengyu Deng
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Long Chen
- Faculty of Science and Technology, University of Macau, Macau SAR 999078, China
| | - Chunyan Liu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
| | - Ding Ding
- Institute of Molecular Medicine (IMM), Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200240, People's Republic of China
| | - Zhuo Chen
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, College of Environmental Science & Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China
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Huang JH, Shih PS, Renganathan V, Gräfner SJ, Lin YC, Kao CL, Lin YS, Hung YC, Kao CR. A High Copper Concentration Copper-Quadrol Complex Electroless Solution for Chip Bonding Applications. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1638. [PMID: 38612152 PMCID: PMC11012947 DOI: 10.3390/ma17071638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/29/2024] [Accepted: 04/01/2024] [Indexed: 04/14/2024]
Abstract
This article presents a novel bonding method for chip packaging applications in the semiconductor industry, with a focus on downsizing high-density and 3D-stacked interconnections to improve efficiency and performance. Microfluidic electroless interconnections have been identified as a potential solution for bonding pillar joints at low temperatures and pressures. However, the complex and time-consuming nature of their production process hinders their suitability for mass production. To overcome these challenges, we propose a tailored plating solution using an enhanced copper concentration and plating rate. By eliminating the need for fluid motion and reducing the process time, this method can be used for mass production. The Taguchi approach is first used to optimize the copper-quadrol complex solution with the plating rate and decomposition time. This solution exhibits a copper concentration that is over five times higher than that of conventional solutions, a plating rate of 22.2 μm/h, and a decomposition time of 8 min on a Cu layer substrate. This technique enables Cu pillars to be successfully bonded within 7 min at 35 °C. Planarizing the pillar surface yields a high bonding percentage of 99%. Mechanical shear testing shows a significant fracture strength of 76 MPa.
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Affiliation(s)
- Jeng-Hau Huang
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (J.-H.H.); (P.-S.S.); (V.R.); (S.J.G.); (Y.-C.L.)
| | - Po-Shao Shih
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (J.-H.H.); (P.-S.S.); (V.R.); (S.J.G.); (Y.-C.L.)
| | - Vengudusamy Renganathan
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (J.-H.H.); (P.-S.S.); (V.R.); (S.J.G.); (Y.-C.L.)
| | - Simon Johannes Gräfner
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (J.-H.H.); (P.-S.S.); (V.R.); (S.J.G.); (Y.-C.L.)
| | - Yu-Chun Lin
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (J.-H.H.); (P.-S.S.); (V.R.); (S.J.G.); (Y.-C.L.)
| | - Chin-Li Kao
- Advanced Semiconductor Engineering Group, Kaohsiung 811, Taiwan; (C.-L.K.); (Y.-S.L.); (Y.-C.H.)
| | - Yung-Sheng Lin
- Advanced Semiconductor Engineering Group, Kaohsiung 811, Taiwan; (C.-L.K.); (Y.-S.L.); (Y.-C.H.)
| | - Yun-Ching Hung
- Advanced Semiconductor Engineering Group, Kaohsiung 811, Taiwan; (C.-L.K.); (Y.-S.L.); (Y.-C.H.)
| | - Chengheng Robert Kao
- Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan; (J.-H.H.); (P.-S.S.); (V.R.); (S.J.G.); (Y.-C.L.)
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Patel J, Patel K, Shah S. Quality by Design Approach for Optimization of Microbial and pH-Triggered Colon-Targeted Tablet Formulation Using Carboxymethyl Tamarind Gum. Assay Drug Dev Technol 2023; 21:297-308. [PMID: 37831908 DOI: 10.1089/adt.2023.066] [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: 10/15/2023] Open
Abstract
ABSTRACT The purpose of this study was to apply the quality by design (QbD) approach in the development of a microbial and pH-triggered colon-targeted budesonide tablet. A retrospective research strategy was used to select various polysaccharide-based natural gums such as tamarind gum, gellan gum, karaya gum, gum ghutti, and khaya gum, which were then evaluated for their effectiveness in microbial degradation and targeting the colon. Viscosity profiles were generated in the presence of a prebiotic culture medium prepared by using the Velgut capsule that mimicked the impact of 4% rat cecal content and helpful in screening of natural polymer. Based on the cumulative drug release data of preliminary batches, carboxymethyl (CM) tamarind gum was identified as a superior and an excellent polymer over the tamarind gum for formulation development. The presence of water as a bridging agent in wet granulation also played an important role in the retardation of drug release. Tablets were supercoated with the enteric polymer, Eudragit S100. The Box-Behnken design was utilized, where the selected independent variables were the proportion of CM tamarind gum, % water proportion, and % weight gain of Eudragit S 100 to optimize the formulation. The optimized design space was generated with the criteria that a drug release should be of less than 5% within the first 2 h, less than 10% within the first 5 h, and more than 70% within the first 8 h, to achieve colon targeting. The optimized batch F3 was found stable as per International Council for Harmonisation guidelines. The roentgenography study for optimized formulation demonstrated that it remained intact for 5 h and, at 7 h, was disseminated completely. CM tamarind gum is efficient for colon targeting, and its proportion in 100 mg along with an enteric coating of 6% led to the optimized formulation.
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Affiliation(s)
- Jaymin Patel
- L. J. Institute of Pharmacy, LJ University, Ahmedabad, India
- Research Scholar, Gujarat Technological University, Ahmedabad, India
| | - Kaushika Patel
- L. J. Institute of Pharmacy, LJ University, Ahmedabad, India
| | - Shreeraj Shah
- L. J. Institute of Pharmacy, LJ University, Ahmedabad, India
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Choudhari M, Damle S, Saha RN, Dubey SK, Singhvi G. Emerging Applications of Hydroxypropyl Methylcellulose Acetate Succinate: Different Aspects in Drug Delivery and Its Commercial Potential. AAPS PharmSciTech 2023; 24:188. [PMID: 37715004 DOI: 10.1208/s12249-023-02645-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 08/23/2023] [Indexed: 09/17/2023] Open
Abstract
Hydroxypropyl methylcellulose acetate succinate (HPMCAS) has multi-disciplinary applications spanning across the development of drug delivery systems, in 3D printing, and in tissue engineering, etc. HPMCAS helps in maintaining the drug in a super-saturated condition by inhibiting its precipitation, thereby increasing the rate and extent of dissolution in the aqueous media. HPMCAS has several distinctive characteristics, such as being amphiphilic in nature, having an ionization pH, and a succinyl and acetyl substitution ratio, all of which are beneficial while developing formulations. This review provides insights regarding the various types of formulations being developed using HPMCAS, including amorphous solid dispersion (ASD), amorphous nanoparticles, dry coating, and 3D printing, along with their applicability in drug delivery and biomedical fields. Furthermore, HPMCAS, compared with other carbohydrate polymers, shows several benefits in drug delivery, including proficiency in imparting stable ASD with a high dissolution rate, being easily processable, and enhancing bioavailability. The various commercially available formulations, regulatory considerations, and key patents containing the HPMCAS have been discussed in this review.
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Affiliation(s)
- Manisha Choudhari
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Vidya Vihar, Pilani Campus, Rajasthan, 333031, India
| | - Shantanu Damle
- Colorcon Asia Pvt. Ltd. Verna Industrial Estate, Verna, Goa, 403722, India
| | - Ranendra Narayan Saha
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Vidya Vihar, Pilani Campus, Rajasthan, 333031, India
| | - Sunil Kumar Dubey
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Vidya Vihar, Pilani Campus, Rajasthan, 333031, India.
- R&D Healthcare Emami Ltd., Belgharia, Kolkata, 700056, India.
| | - Gautam Singhvi
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Vidya Vihar, Pilani Campus, Rajasthan, 333031, India.
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Nakkala RK, Maddiboyina B, Bolisetti SC, Roy H. Duloxetine hydrochloride enteric-coated pellets in capsules with delayed release: formulation and evaluation. SMART SCIENCE 2023. [DOI: 10.1080/23080477.2023.2191496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Affiliation(s)
- Ramya Krishna Nakkala
- Department of Pharmacy Practice, Vishwa Bharathi College of Pharmaceutical Sciences, Guntur, Andhra Pradesh, India
| | - Balaji Maddiboyina
- Department of Medical Writing, Scientific Writing, Medicinal Products, Freyr Solutions, Hyderabad, Telangana, India
| | | | - Harekrishna Roy
- Department of Pharmacy Practice, Nirmala College of Pharmacy, Guntur, Andhra Pradesh, India
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Preparation, characterization and antioxidant activity of inclusion complex loaded with puerarin and corn peptide. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Novel Esomeprazole Magnesium-Loaded Dual-Release Mini-Tablet Polycap: Formulation, Optimization, Characterization, and In Vivo Evaluation in Beagle Dogs. Pharmaceutics 2022; 14:pharmaceutics14071411. [PMID: 35890307 PMCID: PMC9323828 DOI: 10.3390/pharmaceutics14071411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 02/01/2023] Open
Abstract
Esomeprazole magnesium (EMP) is a proton pump inhibitor (PPI) that reduces acid secretion. EMP has a short plasma half-life (approximately 1.3 h); hence, nocturnal acid breakthrough (NAB) frequently occurs, disturbing the patient’s nighttime comfort and sleep. We aimed to develop a novel esomeprazole magnesium-loaded dual-release mini-tablet polycap (DR polycap) with a prolonged onset time and improved bioavailability to prevent NAB. The formulation of the EPM mini-tablet core resulted in rapid drug release. The core was coated with an inner coating and an Eudragit® L30D-55 aqueous dispersion coating to prepare the first-release mini-tablet. In addition, the core was coated with an inner coating and an aqueous dispersion of Eudragit® S100 and Eudragit® L100 coating to prepare the second-release mini-tablet. Each mini-tablet type was characterized using an in vitro dissolution test and microscopic examination. After testing, 10 of each mini-tablets were placed together in hard capsules to form DR polycaps. The combination of mini-tablets was optimized via in vitro release testing and in vivo pharmacokinetic studies. The AUC0–24h of the DR polycap was similar to that of a comparable commercial product (Nexium®); Cmax was lower by approximately 50%, and Tmax was extended by approximately 1.7-fold. In conclusion, DR polycap is an alternative to commercial products with improved NAB and dosing compliance because of its dual-release characteristics.
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Buyukgoz GG, Castro JN, Atalla AE, Pentangelo JG, Tripathi S, Davé RN. Impact of Mixing on Content Uniformity of Thin Polymer Films Containing Drug Micro-Doses. Pharmaceutics 2021; 13:pharmaceutics13060812. [PMID: 34072382 PMCID: PMC8229899 DOI: 10.3390/pharmaceutics13060812] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 05/25/2021] [Accepted: 05/27/2021] [Indexed: 11/24/2022] Open
Abstract
The impact of mixer type and critical process parameters (CPPs) on critical quality attributes (CQAs), including the drug content uniformity (CU) of slurry-cast polymer films loaded with micro-sized poorly water-soluble drugs were investigated. Previously untested hypothesis was that the best mixer at suitable CPPs promotes uniform drug dispersion within film precursors leading to acceptable dried-film CU at low, ~0.6 wt% drug concentrations. Taguchi design was utilized to select the best of three mixers; low-shear impeller, high-shear planetary, and high-intensity vibrational, for dried-film drug concentration of ~23 wt%. As-received fenofibrate, a model poorly water-soluble drug (~6 µm) was directly mixed with the hydroxypropyl methylcellulose (HPMC) and glycerin aqueous solution. Impeller and planetary mixers yielded desirable film relative standard deviation (RSD), while vibrational mixer could not. For the lowest dried-film drug concentration of ~0.6 wt%, only planetary mixer yielded RSD <6%. The precursor drug homogeneity was a sufficient but not a necessary condition for achieving dried-film RSD <6%. Thus, proper selection of mixer and its CPPs assured desirable film CQAs. However, minor drug particle aggregation was identified via re-dispersion testing which also led to incomplete drug release.
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Shahba AAW, Alanazi FK, Abdel-Rahman SI. Stabilization benefits of single and multi-layer self-nanoemulsifying pellets: A poorly-water soluble model drug with hydrolytic susceptibility. PLoS One 2018; 13:e0198469. [PMID: 30024877 PMCID: PMC6053139 DOI: 10.1371/journal.pone.0198469] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 05/18/2018] [Indexed: 11/19/2022] Open
Abstract
Solidified self-nanoemulsifying drug delivery systems (SNEDDS) offer strong option to enhance both drug aqueous solubility and stability. The current study was designed to evaluate the potential stabilization benefits of solidifying cinnarizine (CN) liquid SNEDDS into single and multi-layer self-nanoemulsifying pellets (SL-SNEP and ML-SNEP, respectively). The selected formulations were enrolled into accelerated, intermediate and long-term stability studies. The chemical stability was assessed based on the % of intact CN remaining in formulation. The physical stability was assessed by monitoring the in-vitro dissolution and physical appearance of the formulations. The degradation pathway of CN within lipid-based formulation was proposed to involve a hydroxylation reaction of CN molecule. The chemical stability study revealed significant CN degradation in liquid SNEDDS, SL-SNEP and ML-SNEP (lacking moisture-sealing) within all the storage conditions. In contrast, the moisture sealed ML-SNEP showed significant enhancement of CN chemical stability within the formulation. In particular, ML-SNEP coated with Kollicoat Smartseal 30D showed superior CN stabilization and no significant decrease in dissolution efficiency, at all the storage conditions. The observed stability enhancement is owing to the complete isolation between CN and SNEDDS layer as well as the effective moisture protection provided by Kollicoat Smartseal 30D. Hence, the degradation problem could be eradicated completely. The incorporation of silicon dioxide had an important role in the inhibition of pellet agglomeration upon storage. Accordingly, ML-SNEP coated with Kollicoat Smartseal 30D and/or silicon dioxide could be an excellent dosage form that combine dual enhancement of CN solubilization and stabilization.
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Affiliation(s)
- Ahmad Abdul-Wahhab Shahba
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia
- * E-mail:
| | - Fars Kaed Alanazi
- Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia
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Shahba AAW, Ahmed AR, Alanazi FK, Mohsin K, Abdel-Rahman SI. Multi-Layer Self-Nanoemulsifying Pellets: an Innovative Drug Delivery System for the Poorly Water-Soluble Drug Cinnarizine. AAPS PharmSciTech 2018; 19:2087-2102. [PMID: 29696614 DOI: 10.1208/s12249-018-0990-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 03/12/2018] [Indexed: 11/30/2022] Open
Abstract
Beside their solubility limitations, some poorly water-soluble drugs undergo extensive degradation in aqueous and/or lipid-based formulations. Multi-layer self-nanoemulsifying pellets (ML-SNEP) introduce an innovative delivery system based on isolating the drug from the self-nanoemulsifying layer to enhance drug aqueous solubility and minimize degradation. In the current study, various batches of cinnarizine (CN) ML-SNEP were prepared using fluid bed coating and involved a drug-free self-nanoemulsifying layer, protective layer, drug layer, moisture-sealing layer, and/or an anti-adherent layer. Each layer was optimized based on coating outcomes such as coating recovery and mono-pellets%. The optimized ML-SNEP were characterized using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), X-ray diffraction (XRD), in vitro dissolution, and stability studies. The optimized ML-SNEP were free-flowing, well separated with high coating recovery. SEM showed multiple well-defined coating layers. The acidic polyvinylpyrrolidone:CN (4:1) solution presented excellent drug-layering outcomes. DSC and XRD confirmed CN transformation into amorphous state within the drug layer. The isolation between CN and self-nanoemulsifying layer did not adversely affect drug dissolution. CN was able to spontaneously migrate into the micelles arising from the drug-free self-nanoemulsifying layer. ML-SNEP showed superior dissolution compared to Stugeron® tablets at pH 1.2 and 6.8. Particularly, on shifting to pH 6.8, ML-SNEP maintained > 84% CN in solution while Stugeron® tablets showed significant CN precipitation leaving only 7% CN in solution. Furthermore, ML-SNEP (comprising Kollicoat® Smartseal 30D) showed robust stability and maintained > 97% intact CN within the accelerated storage conditions. Accordingly, ML-SNEP offer a novel delivery system that combines both enhanced solubilization and stabilization of unstable poorly soluble drugs.
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Pal S, Bhattacharjee P. Spray dried powder of lutein-rich supercritical carbon dioxide extract of gamma-irradiated marigold flowers: Process optimization, characterization and food application. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2017.12.085] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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12
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Siyawamwaya M, Choonara YE, Kumar P, Kondiah PPD, du Toit LC, Pillay V. Synthesis, Comparison, and Optimization of a Humic Acid-Quat10 Polyelectrolyte Complex by Complexation-Precipitation versus Extrusion-Spheronization. AAPS PharmSciTech 2017; 18:3116-3128. [PMID: 28523633 DOI: 10.1208/s12249-017-0803-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 05/03/2017] [Indexed: 12/28/2022] Open
Abstract
A novel humic acid and polyquaternium-10 polyelectrolyte complex (PEC) was synthesized utilizing two methods and the solubility and permeability of efavirenz (EFV) were established. Complexation-precipitation and extrusion-spheronization were used to synthesize and compare the drug-loaded PECs. The chemical integrity, thermo-mechanical differences, and morphology between the drug-loaded PECs produced by the two methods were assessed by attenuated total reflectance-Fourier transform infrared, differential scanning calorimetry, and SEM. The extent of drug solubilization was determined using the saturation solubility test while the biocompatibility of both PECs was confirmed by cytotoxicity studies on human adenocarcinoma cells (caco2). Bio-relevant media was used for the solubility and permeability analysis of the optimized PEC formulations for accurate assessment of formulation performance. Ritonavir (RTV) was loaded into the optimized formulation to further corroborate the impact of the PEC on the solubility and permeability properties of a poorly soluble and poorly permeable drug. The optimized EFV-loaded PEC and the RTV-loaded PEC exhibited 14.16 ± 2.81% and 4.39 ± 0.57% increase in solubility, respectively. Both PECs were compared to currently marketed formulations. Intestinal permeation results revealed an enhancement of 61.24 ± 6.92% for EFV and 38.78 ± 0.50% for RTV. Although both fabrication methods produced PECs that enhanced the solubility and permeability of the model Biopharmaceutics Classification System Class II and IV drugs, extrusion-spheronization was selected as most optimal based on the higher solubility and permeability improvement and the impact on caco2 cell viability.
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Kuang C, Sun Y, Li B, Fan R, Zhang J, Yao Y, He Z. Preparation and evaluation of duloxetine hydrochloride enteric-coated pellets with different enteric polymers. Asian J Pharm Sci 2016; 12:216-226. [PMID: 32104333 PMCID: PMC7032077 DOI: 10.1016/j.ajps.2016.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 05/23/2016] [Accepted: 08/22/2016] [Indexed: 11/15/2022] Open
Abstract
The main purpose of the present study was to prepare duloxetine hydrochloride (DXH) enteric-coated pellets using different enteric polymers. Three layers (drug-loaded layer, barrier layer, and enteric-coated layer) were applied to the inert core pellets, successively. The optimal formulation was manufactured by employing suspension layering method in fluidized bed processor (FBP) with varieties of enteric polymers like Aqoat® AS-LF, Eudragit® L30D55 and HPMCP-HP55. The prepared pellets were measured for physical characterization and the in vitro dissolution profile. Scanning electron microscopy (SEM) was conducted to observe the morphology of pellets, and different kinetic models were applied to analyze the release mechanism of Cymbalta® and home-made pellets. The coating weight gain of enteric-coated layer containing Eudragit® L30D55, Aqoat® AS-LF and HP-55 were determined to be 35%, 26% and 24%, respectively. The similarity factors (f2) of self-made capsules with above polymers and commercially available capsules (Cymbalta®) were above 50 in the dissolution medium of pH 6.8 phosphate buffer solution (PBS). SEM figures showed the smooth surfaces of self-prepared pellets using Eudragit® L30D55 and Aqoat® AS-LF, whereas rough surface was found in the HP-55 pellets at day 0, and an impurity was appearing in the condition of 40 °C/75% relative humidity for 1 month. In conclusion, the pellets prepared by utilizing Eudragit® L30D55 and Aqoat® AS-LF were the optimal preparations based on the dissolution profile and stability.
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Affiliation(s)
- Chen Kuang
- Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Yinghua Sun
- Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Bing Li
- Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Rui Fan
- Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Jing Zhang
- Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Yumin Yao
- Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Zhonggui He
- Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
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14
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Preparation and evaluation of enteric-coated delayed-release pellets of duloxetine hydrochloride using a fluidized bed coater. Arch Pharm Res 2015; 38:2163-71. [DOI: 10.1007/s12272-015-0590-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Accepted: 03/07/2015] [Indexed: 10/23/2022]
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15
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Optimization of Reducing Agent and Key Parameters Effect on the Efficiency of Electroless Ni-P Plating by Taguchi Method. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.mspro.2014.07.499] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Sonaglio D, Beringhs A, Porfírio A, Bataille B. On the factors influencing the extrusion strain, particle size and dissolution behavior of multiparticulate systems obtained by extrusion/spheronization. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2012.06.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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17
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Zhou S, Zheng X, Zheng C, Qu F, Cai X, Xu J. A thermosensitive gel formulation of an empirical traditional Chinese prescription for treating cervical erosion. Acta Pharm Sin B 2012. [DOI: 10.1016/j.apsb.2012.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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18
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Hwang CF, Chang JH, Houng JY, Tsai CC, Lin CK, Tsen HY. Optimization of medium composition for improving biomass production of Lactobacillus plantarum Pi06 using the Taguchi array design and the Box-Behnken method. BIOTECHNOL BIOPROC E 2012. [DOI: 10.1007/s12257-012-0007-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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19
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