1
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Cui TJ, Beugeling M, Kaserer W, van Heugten AJP, Capelle MAH. Improved RSV preF protein vaccine quality and stability by elucidation of supercooling-induced aggregation phenomena. Eur J Pharm Biopharm 2024; 203:114457. [PMID: 39151707 DOI: 10.1016/j.ejpb.2024.114457] [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: 04/05/2024] [Revised: 07/10/2024] [Accepted: 08/13/2024] [Indexed: 08/19/2024]
Abstract
Through a synergistic collaboration of people with varying backgrounds and expertise, the root-cause of respiratory syncytial virus prefusion (preF) protein aggregation during freezing was identified to be supercooling. This issue was addressed through a comprehensive understanding of the product. Leveraging innovative and unconventional methods, apparatus, and approaches, it was effectively determined that key parameters influencing aggregation were the nucleation temperature and the duration of supercooling. Moreover, additional measurements revealed that a transition from the preF to the postfusion conformation occurs upon supercooling, which is likely caused by cold denaturation. The importance of considering freezing conditions is highlighted supporting analytical sampling and envisioning that better understanding of sample handling/freezing process can be applied to a wide range of protein-based products.
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Affiliation(s)
- Tao Ju Cui
- Janssen Research & Development, LLC, Leiden, the Netherlands
| | - Max Beugeling
- Janssen Research & Development, LLC, Leiden, the Netherlands
| | - Wallace Kaserer
- Janssen Research & Development, LLC, Malvern, PA, United States
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2
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Pisano R, Semeraro J, Artusio F, Barresi AA. Insights into Thermal Interactions in Frozen Pharmaceutical Vials: Effects on Ice Nucleation Times and Inhibition. Pharm Res 2024; 41:1285-1297. [PMID: 38769275 DOI: 10.1007/s11095-024-03713-2] [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: 11/21/2023] [Accepted: 05/05/2024] [Indexed: 05/22/2024]
Abstract
PURPOSE This study investigates the thermal interactions between adjacent vials during freezing and assesses their impact on nucleation times. METHODS Various loading configurations were analyzed to understand their impact on nucleation times. Configurations involving direct contact between vials and freeze-dryer shelves were studied, along with setups using empty vials between filled ones. Additionally, non-conventional loading configurations and glycol-filled vials were tested. The analysis includes 2R and 20R vials, which are commonly utilized in the freezing and lyophilization of drug products, along with two different fill depths, 1 and 1.4 cm. RESULTS The investigation revealed that configurations with direct contact between vials and freeze-dryer shelves led to substantial thermal interactions, resulting in delayed nucleation in adjacent vials and affecting the temperature at which nucleation takes place in a complex way. In another setup, empty vials were placed between filled vials, significantly reducing thermal interactions. Further tests with non-conventional configurations and glycol-filled vials confirmed the presence of thermal interactions with a minimal inhibitory effect. CONCLUSIONS These findings carry significant implications for the pharmaceutical industry, highlighting the role of thermal interactions among vials during freezing and their impact on the temperature at which ice nucleation occurs.
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Affiliation(s)
- Roberto Pisano
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca Degli Abruzzi, IT10129, Turin, Italy.
| | - Jessica Semeraro
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca Degli Abruzzi, IT10129, Turin, Italy
| | - Fiora Artusio
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca Degli Abruzzi, IT10129, Turin, Italy
| | - Antonello A Barresi
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca Degli Abruzzi, IT10129, Turin, Italy
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3
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Kharatyan T, Igawa S, Gopireddy SR, Ogawa T, Kodama T, Scherließ R, Urbanetz NA. Impact of Post-Freeze Annealing on Shrinkage of Sucrose and Trehalose Lyophilisates. Int J Pharm 2023; 641:123051. [PMID: 37196881 DOI: 10.1016/j.ijpharm.2023.123051] [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: 10/11/2022] [Revised: 04/30/2023] [Accepted: 05/11/2023] [Indexed: 05/19/2023]
Abstract
Freeze-drying of pharmaceuticals produces lyophilisates with properties that depend on both the formulation and the process. Characterisation of the lyophilisate in terms of appearance is necessary not only to produce a visually appealing product, but also to gain insight into the freeze-drying process. The present study investigates the impact of post-freeze annealing on the volume of lyophilisates. For this purpose, sucrose and trehalose solutions were freeze-dried with different annealing conditions and the resulting lyophilisates were analysed with a 3D structured light scanner. The external structure of the lyophilisates was found to be dependent on the bulk materials as well as the choice of vials, while the volume was influenced by the annealing time and temperature. Additionally, differential scanning calorimetry was used to determine glass transition temperatures of frozen samples. As a novelty, the volumes of the lyophilisates and their corresponding glass transition temperatures were compared. This resulted in a correlation supporting the theory that the shrinkage of lyophilisates depends on the amount of residual water in the freeze-concentrated amorphous phase before drying. Understanding the volume change of lyophilisates, in combination with material properties such as glass transition temperature, forms the basis for relating physicochemical properties to process parameters in lyophilisation.
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Affiliation(s)
- Tigran Kharatyan
- Department of Pharmaceutics and Biopharmaceutics, Kiel University, 24118 Kiel, Germany; Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany.
| | - Shunya Igawa
- Formulation Technology Research Laboratories, Daiichi Sankyo Co. Ltd., Hiratsuka 254-0014, Japan.
| | - Srikanth R Gopireddy
- Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany.
| | - Toru Ogawa
- Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany.
| | - Tatsuhiro Kodama
- Formulation Technology Research Laboratories, Daiichi Sankyo Co. Ltd., Hiratsuka 254-0014, Japan.
| | - Regina Scherließ
- Department of Pharmaceutics and Biopharmaceutics, Kiel University, 24118 Kiel, Germany.
| | - Nora A Urbanetz
- Pharmaceutical Development, Daiichi-Sankyo Europe GmbH, 85276 Pfaffenhofen an der Ilm, Germany.
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4
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Pisano R, Artusio F, Adami M, Barresi AA, Fissore D, Frare MC, Zanetti F, Zunino G. Freeze-Drying of Pharmaceuticals in Vials Nested in a Rack System-Part I: Freezing Behaviour. Pharmaceutics 2023; 15:pharmaceutics15020635. [PMID: 36839958 PMCID: PMC9960346 DOI: 10.3390/pharmaceutics15020635] [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: 12/18/2022] [Revised: 02/06/2023] [Accepted: 02/11/2023] [Indexed: 02/16/2023] Open
Abstract
The distribution of biopharmaceuticals often requires either ultra-cold conditions or lyophilisation. In both cases, the drug product is frozen and, thus, exposed to similar stress conditions, which can be detrimental to its quality. However, these stresses can be inhibited or mitigated by a suitable formulation and/or an appropriate freezing design. This paper addresses how the key freezing parameters, i.e., ice nucleation temperature and cooling rate, impact the freezing behaviour of a sucrose-based formulation. The analysis included two loading configurations, vials directly resting on the shelf and nested in a rack system. The loading configuration affected the product freezing rate and the ice nucleation temperature distribution, resulting in larger ice crystals in the case of vials nested in a rack system. SEM micrographs and specific surface area measurements confirmed the different product morphology. Eventually, the different product morphology impacted the bioactivity recovery of lactate dehydrogenase.
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Affiliation(s)
- Roberto Pisano
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca degli Abruzzi, 10129 Torino, Italy
- Correspondence:
| | - Fiora Artusio
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca degli Abruzzi, 10129 Torino, Italy
| | | | - Antonello A. Barresi
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca degli Abruzzi, 10129 Torino, Italy
| | - Davide Fissore
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca degli Abruzzi, 10129 Torino, Italy
| | | | | | - Gabriele Zunino
- Department of Applied Science and Technology, Politecnico di Torino, 24 Corso Duca degli Abruzzi, 10129 Torino, Italy
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5
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Characterizing and measuring the ice nucleation kinetics of aqueous solutions in vials. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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6
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Deck LT, Ochsenbein DR, Mazzotti M. Stochastic ice nucleation governs the freezing process of biopharmaceuticals in vials. Int J Pharm 2022; 625:122051. [PMID: 35907555 DOI: 10.1016/j.ijpharm.2022.122051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 11/25/2022]
Abstract
Biopharmaceuticals commonly require freezing to ensure the stability of the active pharmaceutical ingredients (APIs). At commercial scale, freezing is typically carried out over the course of days in pallets comprising tens of thousands of vials. The selected process conditions have to ensure both complete freezing in all vials and a satisfactory manufacturing throughput. Current process design, however, is mainly experimental, since no mechanistic understanding of pallet freezing and its underlying phenomena has been achieved so far. Within this work, we derive a mechanistic modeling framework and compare the model predictions with engineering run data from the Janssen COVID-19 vaccine. The model qualitatively reproduced all observed trends and reveals that stochastic ice nucleation governs both process duration and batch heterogeneity. Knowledge on the ice nucleation kinetics of the formulation to be frozen thus is required to identify suitable freezing process conditions. The findings of this work pave the way towards a more rational design of pallet freezing, from which a plethora of frozen drug products may benefit. For this reason, we provide open source access to the model in the form of a python package (Deck et al., 2021).
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Affiliation(s)
- Leif-Thore Deck
- Institute of Energy and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland
| | - David R Ochsenbein
- The Janssen Pharmaceutical Companies of Johnson & Johnson, Hochstrasse 201, CH-8200 Schaffhausen, Switzerland
| | - Marco Mazzotti
- Institute of Energy and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland.
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7
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Efficient numerical schemes for population balance models. Comput Chem Eng 2022. [DOI: 10.1016/j.compchemeng.2022.107808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Harguindeguy M, Stratta L, Fissore D, Pisano R. Combining Mathematical Modeling and Thermal Infrared Data in the Freezing of Pharmaceutical Liquid Formulations. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maitê Harguindeguy
- Department of Applied Science and Technology, Politecnico di Torino, 24 corso Duca degli Abruzzi, IT-10129 Torino, Italy
| | - Lorenzo Stratta
- Molecular Engineering Laboratory, Department of Applied Science and Technology, Politecnico di Torino, 24 corso Duca degli Abruzzi, IT-10129 Torino, Italy
| | - Davide Fissore
- Department of Applied Science and Technology, Politecnico di Torino, 24 corso Duca degli Abruzzi, IT-10129 Torino, Italy
| | - Roberto Pisano
- Molecular Engineering Laboratory, Department of Applied Science and Technology, Politecnico di Torino, 24 corso Duca degli Abruzzi, IT-10129 Torino, Italy
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9
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Nuytten G, Revatta SR, Van Bockstal PJ, Kumar A, Lammens J, Leys L, Vanbillemont B, Corver J, Vervaet C, De Beer T. Development and Application of a Mechanistic Cooling and Freezing Model of the Spin Freezing Step within the Framework of Continuous Freeze-Drying. Pharmaceutics 2021; 13:pharmaceutics13122076. [PMID: 34959357 PMCID: PMC8703267 DOI: 10.3390/pharmaceutics13122076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/22/2021] [Accepted: 11/26/2021] [Indexed: 01/17/2023] Open
Abstract
During the spin freezing step of a recently developed continuous spin freeze-drying technology, glass vials are rapidly spun along their longitudinal axis. The aqueous drug formulation subsequently spreads over the inner vial wall, while a cold gas flow is used for cooling and freezing the product. In this work, a mechanistic model was developed describing the energy transfer during each phase of spin freezing in order to predict the vial and product temperature change over time. The uncertainty in the model input parameters was included via uncertainty analysis, while global sensitivity analysis was used to assign the uncertainty in the model output to the different sources of uncertainty in the model input. The model was verified, and the prediction interval corresponded to the vial temperature profiles obtained from experimental data, within the limits of the uncertainty interval. The uncertainty in the model prediction was mainly explained (>96% of uncertainty) by the uncertainty in the heat transfer coefficient, the gas temperature measurement, and the equilibrium temperature. The developed model was also applied in order to set and control a desired vial temperature profile during spin freezing. Applying this model in-line to a continuous freeze-drying process may alleviate some of the disadvantages related to batch freeze-drying, where control over the freezing step is generally poor.
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Affiliation(s)
- Gust Nuytten
- Laboratory of Pharmaceutical Process Analytical Technology, Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (P.-J.V.B.); (L.L.)
- Correspondence: (G.N.); (T.D.B.)
| | - Susan Ríos Revatta
- Escuela Profesional de Química, Facultad de Ciencias, Universidad Nacional de Ingeniería, Puerta 5—Av. Tupac Amaru N° 210 Rimac, Lima 15333, Peru;
| | - Pieter-Jan Van Bockstal
- Laboratory of Pharmaceutical Process Analytical Technology, Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (P.-J.V.B.); (L.L.)
| | - Ashish Kumar
- Pharmaceutical Engineering Research Unit, Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium;
| | - Joris Lammens
- Laboratory of Pharmaceutical Technology, Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (J.L.); (C.V.)
| | - Laurens Leys
- Laboratory of Pharmaceutical Process Analytical Technology, Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (P.-J.V.B.); (L.L.)
| | | | - Jos Corver
- RheaVita, Frieda Saeysstraat 1, 9052 Zwijnaarde, Belgium;
| | - Chris Vervaet
- Laboratory of Pharmaceutical Technology, Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (J.L.); (C.V.)
| | - Thomas De Beer
- Laboratory of Pharmaceutical Process Analytical Technology, Department of Pharmaceutical Analysis, Faculty of Pharmaceutical Sciences, Ghent University, 9000 Ghent, Belgium; (P.-J.V.B.); (L.L.)
- Correspondence: (G.N.); (T.D.B.)
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10
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Deck LT, Ochsenbein DR, Mazzotti M. A Stochastic Shelf-Scale Modeling Framework for the Freezing Stage in Freeze-Drying Processes. Int J Pharm 2021; 613:121276. [PMID: 34767908 DOI: 10.1016/j.ijpharm.2021.121276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 11/01/2021] [Accepted: 11/02/2021] [Indexed: 11/16/2022]
Abstract
Freezing and freeze-drying processes are commonly used to improve the stability and thus shelf life of pharmaceutical formulations. Despite strict product quality requirements, batch heterogeneity is widely observed in frozen products, thus potentially causing process failure. Such heterogeneity is the result of the stochasticity of ice nucleation and the variability in heat transfer among vials, which lead to unique freezing histories of individual vials. We present for the first time a modeling framework for large-scale freezing processes of vials on a shelf. The model is based on first principles and couples heat transfer with ice nucleation kinetics, thus enabling studies on batch heterogeneity. Ice nucleation is assumed to be an inhomogeneous Poisson process and it is simulated using a Monte Carlo approach. We applied the model to understand the individual pathways leading to batch heterogeneity. Our simulations revealed a novel mechanism how ice nucleation leads to heterogeneity based on thermal interaction among vials. We investigated the effect of various cooling protocols, namely shelf-ramped cooling, holding steps and controlled nucleation, on the nucleation and solidification behavior across the shelf. We found that under rather general conditions holding schemes lead to similar solidification times, as in the case of controlled nucleation, thus identifying a potential pathway for freezing process optimization.
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Affiliation(s)
- Leif-Thore Deck
- Institute of Energy and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland
| | - David R Ochsenbein
- The Janssen Pharmaceutical Companies of Johnson & Johnson, Hochstrasse 201, 8200 Schaffhausen, Switzerland
| | - Marco Mazzotti
- Institute of Energy and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland.
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11
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Investigation of the Freezing Phenomenon in Vials Using an Infrared Camera. Pharmaceutics 2021; 13:pharmaceutics13101664. [PMID: 34683957 PMCID: PMC8539506 DOI: 10.3390/pharmaceutics13101664] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/30/2021] [Accepted: 10/05/2021] [Indexed: 01/19/2023] Open
Abstract
The freezing phenomenon has a dramatic impact on the quality of freeze-dried products. Several freezing models applied to solutions in vials have been proposed to predict the resulting product morphology and describe heat transfer mechanisms. However, there is a lack of detailed experimental observations of the freezing phenomenon in vials in the literature. Thus, the present work offers new experimental observations of the freezing phenomenon in vials by infrared (IR) thermography. IR imaging allowed each vial’s whole axial temperature profile to be collected during freezing, providing significant insights into the process. Spontaneous nucleation and vacuum-induced surface freezing (VISF), as a controlled nucleation technique, are investigated. Batches having vials in direct contact with the shelf (exchanging heat mainly through conduction) as well as suspended (exchanging heat mainly through natural convection and radiation) were tested. The study used three solutions: sucrose 5%, mannitol 5%, and dextran 10%. SEM images coupled with an automated image segmentation technique were also performed to examine possible correlations between the freezing observations and the resulting pore size distributions. IR thermography was found to be a promising tool for experimentally predicting the resulting product morphology in-line.
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12
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Park J, Cho JH, Braatz RD. Mathematical modeling and analysis of microwave-assisted freeze-drying in biopharmaceutical applications. Comput Chem Eng 2021. [DOI: 10.1016/j.compchemeng.2021.107412] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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13
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Long-Acting Risperidone Dual Control System: Preparation, Characterization and Evaluation In Vitro and In Vivo. Pharmaceutics 2021; 13:pharmaceutics13081210. [PMID: 34452171 PMCID: PMC8399464 DOI: 10.3390/pharmaceutics13081210] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 12/24/2022] Open
Abstract
Schizophrenia, a psychiatric disorder, requires long-term treatment; however, large fluctuations in blood drug concentration increase the risk of adverse reactions. We prepared a long-term risperidone (RIS) implantation system that can stabilize RIS release and established in-vitro and in-vivo evaluation systems. Cumulative release, drug loading, and entrapment efficiency were used as evaluation indicators to evaluate the effects of different pore formers, polymer ratios, porogen concentrations, and oil–water ratios on a RIS implant (RIS-IM). We also built a mathematical model to identify the optimized formulation by stepwise regression. We also assessed the crystalline changes, residual solvents, solubility and stability after sterilization, in-vivo polymer degradation, pharmacokinetics, and tissue inflammation in the case of the optimized formulation. The surface of the optimized RIS microspheres was small and hollow with 134.4 ± 3.5 µm particle size, 1.60 SPAN, 46.7% ± 2.3% implant drug loading, and 93.4% entrapment efficiency. The in-vitro dissolution behavior of RIS-IM had zero-order kinetics and stable blood concentration; no lag time was released for over three months. Furthermore, the RIS-IM was not only non-irritating to tissues but also had good biocompatibility and product stability. Long-acting RIS-IMs with microspheres and film coatings can provide a new avenue for treating schizophrenia.
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14
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Cheng S, McKenna GB. Isothermal Crystallization and Time-Temperature Transformation of Amorphous Nifedipine: A Case of Polymorphism Formation and Conversion. Mol Pharm 2021; 18:2786-2802. [PMID: 34105978 DOI: 10.1021/acs.molpharmaceut.1c00331] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Crystallization of active pharmaceutical ingredients (APIs) from the supercooled liquid state is an important issue in determining the stability of amorphous pharmaceutical dispersions. In the present study, the isothermal crystallization from the supercooled liquid state of the pharmaceutical compound nifedipine was investigated by both rheological and differential scanning calorimetry (DSC) measurements, and the crystallization kinetics was fitted to the Johnson-Mehl-Avrami (JMA) equation. Both the crystallization induction time and completion time from the two methods were used to construct the time-temperature-transformation (TTT) diagram for nifedipine. A model based on a modification of classical homogeneous nucleation and crystal growth theory was employed to fit the induction and completion time curves. Both DSC and rheological methods give similar results for the crystallization kinetics of the nifedipine. From the crystallization kinetics modeling, the solid-liquid interfacial surface tension σSL of nifedipine was estimated and the value was found to be consistent with prior results obtained from melting point depression measurements as a function of crystal size. Evidence is shown that for temperatures below 110 °C, at the early stage of nucleation, NIF first nucleates into the metastable β'-form and later converts into the stable α-form during the isothermal crystallization. We are also able to report the heat of fusion of the γ'-NIF based on the calorimetric experiments.
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Affiliation(s)
- Sixue Cheng
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United States
| | - Gregory B McKenna
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United States
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15
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Klijn ME, Hubbuch J. Application of ultraviolet, visible, and infrared light imaging in protein-based biopharmaceutical formulation characterization and development studies. Eur J Pharm Biopharm 2021; 165:319-336. [PMID: 34052429 DOI: 10.1016/j.ejpb.2021.05.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/29/2021] [Accepted: 05/12/2021] [Indexed: 01/10/2023]
Abstract
Imaging is increasingly more utilized as analytical technology in biopharmaceutical formulation research, with applications ranging from subvisible particle characterization to thermal stability screening and residual moisture analysis. This review offers a comprehensive overview of analytical imaging for scientists active in biopharmaceutical formulation research and development, where it presents the unique information provided by the ultraviolet (UV), visible (Vis), and infrared (IR) sections in the electromagnetic spectrum. The main body of this review consists of an outline of UV, Vis, and IR imaging techniques for several (bio)physical properties that are commonly determined during protein-based biopharmaceutical formulation characterization and development studies. The review concludes with a future perspective of applied imaging within the field of biopharmaceutical formulation research.
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Affiliation(s)
- Marieke E Klijn
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, Delft 2629 HZ, the Netherlands.
| | - Jürgen Hubbuch
- Institute of Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
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16
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Arsiccio A, Pisano R. The Ice-Water Interface and Protein Stability: A Review. J Pharm Sci 2020; 109:2116-2130. [DOI: 10.1016/j.xphs.2020.03.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/09/2020] [Accepted: 03/23/2020] [Indexed: 11/25/2022]
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