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Effects of Au@Ag core-shell nanostructure with alginate coating on male reproductive system in mice. Toxicol Rep 2023; 10:104-116. [PMID: 36685271 PMCID: PMC9853145 DOI: 10.1016/j.toxrep.2023.01.003] [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: 11/26/2022] [Accepted: 01/07/2023] [Indexed: 01/11/2023] Open
Abstract
Despite the widespread use of silver nanoparticles (NPs), these NPs can accumulate and have toxic effects on various organs. However, the effects of silver nanostructures (Ag-NS) with alginate coating on the male reproductive system have not been studied. Therefore, this study aimed to investigate the impacts of this NS on sperm function and testicular structure. After the synthesis and characterization of Ag-NS, the animals were divided into five groups (n = 8), including one control group, two sham groups (received 1.5 mg/kg/day alginate solution for 14 and 35 days), and two treatment groups (received Ag-NS at the same dose and time). Following injections, sperm parameters, apoptosis, and autophagy were analyzed by the TUNEL assay and measurement of the mRNA expression of Bax, Bcl-2, caspase-3, LC3, and Beclin-1. Fertilization rate was assessed by in vitro fertilization (IVF), and testicular structure was analyzed using the TUNEL assay and hematoxylin and eosin (H&E) staining. The results showed that the NS was rod-shaped, had a size of about 60 nm, and could reduce sperm function and fertility. Gene expression results demonstrated an increase in the apoptotic markers and a decrease in autophagy markers, indicating apoptotic cell death. Moreover, Ag-NS invaded testicular tissues, especially in the chronic phase (35 days), resulting in tissue alteration and epithelium disintegration. The results suggest that sperm parameters and fertility were affected. In addition, NS has negative influences on testicular tissues, causing infertility in men exposed to these NS.
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Key Words
- AA, Ascorbic acid
- AMPkinase, 5' adenosine monophosphate-activated protein kinase
- ANOVA, Analysis of variance
- Ag-NPs, silver nanoparticles
- AgNO3,, Silver nitrate
- Apoptosis
- Atg3, Autophagy related 3
- Autophagy
- BAX, Bcl-2-associated X protein
- BTB, Blood-testes barrier
- Bcl-2, B-cell lymphoma 2
- CSNs, Core-shell nanostructures
- CTAB, Cetyltrimethylammonium bromide
- DLS, Dynamic light scattering
- DW, Distilled water
- FTIR, Fourier transform infrared spectroscopy
- FYN kinase, Proto-oncogene tyrosine-protein kinase
- Fertilization
- H2SO4,, Sulphuric acid
- HAuCl4, Tetrachloroauric acid trihydrate
- HR-TEM, High-resolution transmission electron microscopy
- ICP-MS, Inductively coupled plasma mass spectrometry
- IL, Interleukins
- IU, International Unit
- IgE, Immunoglobulin E
- NIH, National Institutes of Health
- NMRI, Naval Medical Research Institute
- NMs, Nanomaterials
- NRs, Nano rods
- NaBH4,, Sodium borohydride
- NaOH, Sodium hydroxide
- Nanostructures
- OD, Optical density
- PBS, Phosphate-buffered saline
- PI, Propidium Iodide
- PMSG, Pregnant Mare Serum Gonadotropin
- PdI, Polydispersity index
- ROS, Reactive oxygen species
- SD, standard deviation
- SERS, Surface enhanced Raman scattering
- SNRs, Silver Nano rods
- SSCs, Spermatogonial stem cells
- Semen analysis
- TDT, Terminal deoxynucleotidyl transferase
- TGA, Thermal gravimetric Analysis
- TGF-β, Transforming growth factor
- TUNEL, Terminal deoxynucleotidyl transferase dUTP nick end labeling
- Testicular tissue
- cDNA, Complementary DNA
- ct, cycle threshold
- dUTP, Deoxyuridine triphosphate
- hCG, human chorionic gonadotropin
- q RT-PCR, Quantitative real time - polymerase chain reaction
- rpm, Rotations Per Minute
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In vitro and in vivo evaluation of cerium oxide nanoparticles in respiratory syncytial virus infection. Bioact Mater 2022; 24:124-135. [PMID: 36606255 PMCID: PMC9791695 DOI: 10.1016/j.bioactmat.2022.12.005] [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: 08/14/2022] [Revised: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022] Open
Abstract
Respiratory syncytial virus (RSV) is the most common cause of viral bronchiolitis among children worldwide, yet there is no vaccine for RSV disease. This study investigates the potential of cube and sphere-shaped cerium oxide nanoparticles (CNP) to modulate reactive oxygen (ROS) and nitrogen (RNS) species and immune cell phenotypes in the presence of RSV infection in vitro and in vivo. Cube and sphere-shaped CNP were synthesized by hydrothermal and ultrasonication methods, respectively. Physico-chemical characterization confirmed the shape of sphere and cube CNP and effect of various parameters on their particle size distribution and zeta potential. In vitro results revealed that sphere and cube CNP differentially modulated ROS and RNS levels in J774 macrophages. Specifically, cube CNP significantly reduced RSV-induced ROS levels without affecting RNS levels while sphere CNP increased RSV-induced RNS levels with minimal effect on ROS levels. Cube CNP drove an M1 phenotype in RSV-infected macrophages in vitro by increasing macrophage surface expression of CD80 and CD86 with a concomitant increase in TNFα and IL-12p70, while simultaneously decreasing M2 CD206 expression. Intranasal administration of sphere and cube-CNP were well-tolerated with no observed toxicity in BALB/c mice. Notably, cube CNP preferentially accumulated in murine alveolar macrophages and induced their activation, avoiding enhanced uptake and activation of other inflammatory cells such as neutrophils, which are associated with RSV-mediated inflammation. In conclusion, we report that sphere and cube CNP modulate macrophage polarization and innate cellular responses during RSV infection.
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Key Words
- APTES, 3-aminopropyltriethoxysilane
- BAL, Bronchoalveolar lavage
- BHA, Butylated hydroxyanisole
- Bioactive nanoparticles
- CNP, Cerium oxide nanoparticles
- Cerium oxide nanoparticles
- DLS, Dynamic light scattering
- DMEM, Dulbecco's Modified Eagle's Medium
- FITC, Fluorescein isothiocyanate
- Gas6, Growth arrest specific-6
- HEPES, 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid
- Immunomodulation
- MFI, Mean fluorescence intensity
- Macrophage phenotypes
- Nanoparticle shape
- PBS, Phosphate buffered saline
- RFU, Relative fluorescence units
- RNS, Reactive nitrogen species
- ROS, Reactive oxygen species
- RSV, Respiratory syncytial virus
- Reactive oxygen species
- Respiratory syncytial virus
- SDS-PAGE, Sodium dodecyl sulfate polyacrylamide gel electrophoresis
- SOD, Superoxide dismutase
- TEM, Transmission electron microscopy
- iNOS, Induced nitrous oxide synthase
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PP2A is activated by cytochrome c upon formation of a diffuse encounter complex with SET/TAF-Iβ. Comput Struct Biotechnol J 2022; 20:3695-3707. [PMID: 35891793 PMCID: PMC9293736 DOI: 10.1016/j.csbj.2022.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/04/2022] [Accepted: 07/04/2022] [Indexed: 11/25/2022] Open
Abstract
Intrinsic protein flexibility is of overwhelming relevance for intermolecular recognition and adaptability of highly dynamic ensemble of complexes, and the phenomenon is essential for the understanding of numerous biological processes. These conformational ensembles-encounter complexes-lack a unique organization, which prevents the determination of well-defined high resolution structures. This is the case for complexes involving the oncoprotein SET/template-activating factor-Iβ (SET/TAF-Iβ), a histone chaperone whose functions and interactions are significantly affected by its intrinsic structural plasticity. Besides its role in chromatin remodeling, SET/TAF-Iβ is an inhibitor of protein phosphatase 2A (PP2A), which is a key phosphatase counteracting transcription and signaling events controlling the activity of DNA damage response (DDR) mediators. During DDR, SET/TAF-Iβ is sequestered by cytochrome c (Cc) upon migration of the hemeprotein from mitochondria to the cell nucleus. Here, we report that the nuclear SET/TAF-Iβ:Cc polyconformational ensemble is able to activate PP2A. In particular, the N-end folded, globular region of SET/TAF-Iβ (a.k.a. SET/TAF-Iβ ΔC)-which exhibits an unexpected, intrinsically highly dynamic behavior-is sufficient to be recognized by Cc in a diffuse encounter manner. Cc-mediated blocking of PP2A inhibition is deciphered using an integrated structural and computational approach, combining small-angle X-ray scattering, electron paramagnetic resonance, nuclear magnetic resonance, calorimetry and molecular dynamics simulations.
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Key Words
- ANP32B, Acidic leucine-rich nuclear phosphoprotein family member B
- BTFA, 3-bromo-1,1,1-trifluoroacetone
- CD, Circular dichroism
- CDK9, Cyclin-dependent kinase 9
- CW, Continuous wave
- Cc, Cytochrome c
- Cytochrome c
- DDR, DNA damage response
- DEER, Double electron–electron resonance
- DLS, Dynamic light scattering
- DMEM, Dulbecco’s modified Eagle’s medium
- DNA, Deoxyribonucleic acid
- DTT, Dithiotreitol
- Dmax, Maximum dimension
- EDTA, Ethylenediamine tetraacetic acid
- EGTA, Ethyleneglycol tetraacetic acid
- EPR, Electron paramagnetic resonance
- Encounter complex
- FBS, Fetal bovine serum
- GUI, Graphical user interface
- HEK, Human embryonic kidney cells
- HRP, Horseradish peroxidase
- I2PP2A, Inhibitor 2 of the protein phosphatase 2A
- I3PP2A, Inhibitor 3 of the protein phosphatase 2A
- INTAC, Integrator-PP2A complex
- IPTG, Isopropyl-β-D-1-thiogalactopyranoside
- ITC, Isothermal titration calorimetry
- Ip/Id, Intensity ratio of NMR resonances between paramagnetic and diamagnetic samples
- LB, Luria-Bertani
- MD, Molecular dynamics
- MTS, (1-acetoxy-2,2,5,5-tetramethyl-δ-3-pyrroline-3-methyl) methanethiosulfonate
- MTSL, (1-oxyl-2,2,5,5-tetramethyl- δ −3-pyrroline-3-methyl) methanethiosulfonate
- MW, Molecular weight
- Molecular dynamics
- NAP1, Nucleosome assembly protein 1
- NAPL, Nucleosome assembly protein L
- NMA, Normal mode analysis
- NMR, Nuclear magnetic resonance
- NPT, Constant number, pressure and temperature
- NVT, Constant number, volume and temperature
- Nuclear magnetic resonance
- OD600, Optical density measured at 600 nm
- OPC, Optimal 3-charge, 4-point rigid water model
- PCR, Polymerase chain reaction
- PME, Particle mesh Ewald
- PMSF, Phenylmethylsulfonyl fluoride
- PP2A, Protein phosphatase 2A
- PRE, Paramagnetic relaxation enhancement
- PVDF, Polyvinylidene fluoride
- Protein phosphatase 2A
- RNA, Ribonucleic acid
- RNApol II, RNA polymerase II
- Rg, Radius of gyration
- SAXS, Small-angle X-ray scattering
- SC, Sample changer
- SDS-PAGE, Sodium dodecylsulfate-polyacrylamide gel electrophoresis
- SDSL, Site-directed spin labeling
- SEC, Size-exclusion chromatography
- SET/TAF-Iβ
- SET/TAF-Iβ ΔC, SET/template-activating factor-Iβ construct lacking its C-terminal domain
- SET/TAF-Iβ, SET/template-activating factor-Iβ
- SPRi, Surface plasmon resonance imaging
- TAF-Iα, Template-activating factor-Iα
- TPBS, Tween 20-phosphate buffered saline
- VPS75, Vacuolar protein sorting-associated protein 75
- WT, Wild type
- XRD, X-ray diffraction
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Recent advances in process engineering and upcoming applications of metal-organic frameworks. Coord Chem Rev 2021; 426:213544. [PMID: 32981945 PMCID: PMC7500364 DOI: 10.1016/j.ccr.2020.213544] [Citation(s) in RCA: 119] [Impact Index Per Article: 39.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 12/25/2022]
Abstract
Progress in metal-organic frameworks (MOFs) has advanced from fundamental chemistry to engineering processes and applications, resulting in new industrial opportunities. The unique features of MOFs, such as their permanent porosity, high surface area, and structural flexibility, continue to draw industrial interest outside the traditional MOF field, both to solve existing challenges and to create new businesses. In this context, diverse research has been directed toward commercializing MOFs, but such studies have been performed according to a variety of individual goals. Therefore, there have been limited opportunities to share the challenges, goals, and findings with most of the MOF field. In this review, we examine the issues and demands for MOF commercialization and investigate recent advances in MOF process engineering and applications. Specifically, we discuss the criteria for MOF commercialization from the views of stability, producibility, regulations, and production cost. This review covers progress in the mass production and formation of MOFs along with future applications that are not currently well known but have high potential for new areas of MOF commercialization.
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Key Words
- 2,4-DNT, 2,4-dinitrotoluene
- 4-NP, 4-nitrophenol
- ABS, acrylonitril-butadiene-styrene
- BET, Brunauer–Emmett–Teller
- CA, Cellulose-acetate
- CEES, 2-Chloroethyl ethyl sulfide
- CIE, Commission international ed’Eclairage
- CNF, Cellulose nanofiber
- CNG, compressed natural gas
- CVD, Chemical vapor deposition
- CWA, Chemical warfare agent
- CWC, Chemical weapons convention
- Commercialization
- DCP, Diethylchlorophosphonate
- DDM, n-dodecyl β-D-maltoside
- DEF, N,N-Diethyl formamide
- DFP, Diisopropyl fluorophosphate
- DFT, Density functional theory
- DIFP, Diisopropylfluorophosphate
- DLS, Dynamic light scattering
- DMA, Dimethylacetamide
- DMF, N,N-Dimethyl formamide
- DMMP, Dimethyl methylphosphonate
- DRIFTS, Diffuse reflectance infrared fourier transform spectroscopy
- Dispersion
- E. Coli, Escherichia coli
- ECS, Extrusion-crushing-sieving
- EDLCs, Electrochemical double-layer capacitors
- EPA, Environmental protection agency
- EXAFS, Extended X-ray absorption fine structure
- FT-IR, Fourier-transform infrared spectroscopy
- Fn, Fusobacterium nucleatum
- Future applications
- GC–MS, Gas chromatography–mass spectrometry
- GRGDS, Gly-Arg-Gly-Asp-Ser
- ILDs, Interlayer dielectrics
- ITRS, International technology roadmap for semiconductors
- LED, Light-emitting diode
- LIBs, Lithium-ion batteries
- LMOF, Luminescent metal–organic framework
- LOD, Limit of detection
- MB, methylene blue
- MBC, Minimum bactericidal concentration
- MIC, Minimum inhibitory concentration
- MIM, Metal-insulator–metal
- MMP, Methyl methylphosphonate
- MOF, metal–organic framework
- MOGs, Metal-organic gels
- MRA, mesoporous ρ-alumina
- MRSA, Methicillin-resistant staphylococcus aureus
- MVTR, Moisture vapor transport rate
- Mass production
- Metal–organic framework
- NMP, N-methyl-2-pyrrolidone
- NMR, Nuclear magnetic resonance
- PAN, Polyacrylonitrile
- PANI, Polyaniline
- PEG-CCM, polyethylene-glycol-modified mono-functional curcumin
- PEI, Polyetherimide
- PEMFCs, Proton-exchange membrane fuel cells
- PM, Particulate matter
- POM, Polyoxometalate
- PPC, Polypropylene/polycarbonate
- PS, Polystyrene
- PSM, Post-synthetic modification
- PVA, Polyvinyl alcohol
- PVB, Polyvinyl Butyral
- PVC, Polyvinylchloride
- PVF, Polyvinylformal
- PXRD, Powder x-ray diffraction
- Pg, Porphyromonas gingivalis
- RDX, 1,3,5-trinitro-1,3,5-triazinane
- ROS, Reactive oxygen species
- SALI, Solvent assisted ligand incorporation
- SBU, Secondary building unit
- SCXRD, Single-crystal X-ray diffraction
- SEM, Scanning electron microscope
- SIBs, Sodium-ion batteries
- SSEs, Solid-state electrolytes
- STY, space–time yield, grams of MOF per cubic meter of reaction mixture per day of synthesis
- Shaping
- TEA, Triethylamine
- TIPS-HoP, Thermally induced phase separation-hot pressing
- TNP, 2,4,6-trinitrophenol
- TNT, 2,4,6-trinitrotoluene
- UPS, Ultraviolet photoelectron spectroscopy
- VOC, Volatile organic compound
- WHO, World health organization
- WLED, White light emitting diode
- XPS, X-ray photoelectron spectroscopy
- ZIF, zeolitic imidazolate framework
- hXAS, Hard X-ray absorption spectroscopy
- sXAS, Soft X-ray absorption spectroscopy
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Engineering osteogenic microenvironments by combination of multilayers from collagen type I and chondroitin sulfate with novel cationic liposomes. Mater Today Bio 2020; 7:100071. [PMID: 32924006 PMCID: PMC7476072 DOI: 10.1016/j.mtbio.2020.100071] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/15/2020] [Accepted: 07/16/2020] [Indexed: 11/28/2022] Open
Abstract
Cationic liposomes composed of a novel lipid (N-{6-amino-1-[N-(9Z) -octadec9-enylamino] -1-oxohexan-(2S) -2-yl} -N'- {2- [N, N-bis(2-aminoethyl) amino] ethyl} -2-hexadecylpropandiamide) (OO4) and dioleoylphosphatidylethanolamine (DOPE) possess high amounts of amino groups and are promising systems for lipofection. Moreover, these cationic liposomes can also be used as a polycationic entity in multilayer formation using layer-by-layer technique (LbL), which is a method to fabricate surface coatings by alternating adsorption of polyanions and polycations. Since liposomes are suitable for endocytosis by or fusion with cells, controlled release of their cargo on site is possible. Here, a polyelectrolyte multilayer (PEM) system was designed of chondroitin sulfate (CS) and collagen type I (Col I) by LbL technique with OO4/DOPE liposomes embedded in the terminal layers to create an osteogenic microenvironment. Both, the composition of PEM and cargo of the liposomes were used to promote osteogenic differentiation of C2C12 myoblasts as in vitro model. The internalization of cargo-loaded liposomes from the PEM into C2C12 cells was studied using lipophilic (Rhodamine-DOPE conjugate) and hydrophilic (Texas Red-labeled dextran) model compounds. Besides, the use of Col I and CS should mimic the extracellular matrix of bone for future applications such as bone replacement therapies. Physicochemical studies of PEM were done to characterize the layer growth, thickness, and topography. The adhesion of myoblast cells was also evaluated whereby the benefit of a cover layer of CS and finally Col I above the liposome layer was demonstrated. As proof of concept, OO4/DOPE liposomes were loaded with dexamethasone, a compound that can induce osteogenic differentiation. A successful induction of osteogenic differentiation of C2C12 cells with the novel designed liposome-loaded PEM system was shown. These findings indicate that designed OH4/DOPE loaded PEMs have a high potential to be used as drug delivery or transfection system for implant coating in the field of bone regeneration and other applications.
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Key Words
- AFM, Atomic force microscopy
- C2C12 myoblasts
- CLSM, Confocal Laser Scanning Microscopy
- CS, chondroitin sulfate
- Col I, Collagen I
- DLS, Dynamic light scattering
- DMEM, Dulbecco’s modified Eagle’s medium
- DOPE, dioleoylphosphatidylethanolamine
- Dex, Dexamethasone
- ECM, Extracellular matrix
- GAG, Glycosaminoglycan
- LbL, Layer-by-Layer technique
- OO4, (N-{6-amino-1-[N-(9Z) -octadec9-enylamino] -1-oxohexan-(2S) -2-yl} -N’- {2- [N, N-bis(2-aminoethyl) amino] ethyl} -2-hexadecylpropandiamide)
- PBS, Phosphate-buffered saline
- PEI, Polyethylenimine
- PEM, Polyelectrolyte multilayer
- SEM, Scanning electron microscopy
- SPR, Surface plasmon resonance
- TEM, Transmission electron microscopy
- WCA, Water contact angle
- cationic lipids
- chondroitin sulfate
- collagen I
- internalization
- osteogenic differentiation
- polyelectrolyte multilayer system
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Investigation into alternative testing methodologies for characterization of influenza virus vaccine. Hum Vaccin Immunother 2016; 11:1673-84. [PMID: 26090618 PMCID: PMC4514297 DOI: 10.1080/21645515.2015.1034914] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The objective of this study was to explore various testing methodologies suitable for characterizing sedimented or agglomerated material. To model this, bioCSL's split influenza virus vaccine, Fluvax® was utilized. The investigation was conducted on 5 dispensed lots of commercially manufactured vaccine, formulated for the 2013 Southern Hemisphere season. Vaccine syringes were initially inspected by visual tests; the material was then aseptically pooled for characterization assessment by microscopy and several agglomeration assays. All syringes passed bioCSL's description test where any fine or large sized particles of sediment observed in the vaccine were resuspended upon shaking; inverted light microscopy verified that the sediment morphology was consistent with influenza vaccine. Electron microscopic examination of pooled vaccine material demonstrated the presence of typical influenza structures including split virus, virosomes, whole virus particles and agglomerates. An optical density turbidity assay revealed relatively high protein recoveries in the vaccine supernatant post-centrifugation treatment, thus indicative of a well-dispersed vaccine formulation. This was corroborated by particle sizing analysis using dynamic light scattering which generated reproducible volume particle size distributions of a polydisperse nature. Ultraviolet-visible absorbance profiles further confirmed the presence of some agglomerated material. Data from all methods demonstrated consistent results between all batches of vaccine. Therefore, this investigation revealed the suitability and usefulness of the various methodologies in characterizing the appearance of agglomerated vaccine material. It is suggested that such methods may be applicable and beneficial for the development of a wider spectrum of heterogeneous and agglomerated formulations to provide safe, efficacious and superior quality biopharmaceutical products.
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Key Words
- AI, Agglomeration index
- ANOVA, Analysis of variance
- AUC, Analytical ultracentrifugation
- DLS, Dynamic light scattering
- EM, Electron microscopy
- EP, European Pharmacopoeia
- FDA, Food and Drug Administration
- FFF, Field flow fractionation
- HA, Hemagglutinin
- ILM, Inverted light microscopy
- IVV, Influenza virus vaccine
- NA, Neuraminidase
- OD, Optical density
- ODT, Optical density turbidity
- PSD, Particle size distribution
- QbD, Quality by Design
- RCF, Relative centrifugal force
- RI, Refractive index
- SEC, Size exclusion chromatography
- SH, Southern Hemisphere
- SLS, Static light scattering
- TEM, Transmission electron microscope
- TGA, Therapeutic Goods Administration
- TIV, Trivalent influenza vaccine
- UV, Ultraviolet
- biopharmaceuticals
- characterization methods
- dispersed formulation
- influenza vaccine
- protein agglomeration
- sedimentation
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