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1.
Langmuir ; 40(15): 7962-7973, 2024 Apr 16.
Artigo em Inglês | MEDLINE | ID: mdl-38577710

RESUMO

During the manufacturing process of liposome formulations, it is considered difficult to evaluate their physicochemical properties and biological profiles due to the complexity of their structure and manufacturing process. Conventional quality evaluation is labor-intensive and time-consuming; therefore, there was a need to introduce a method that could perform in-line, real-time evaluation during the manufacturing process. In this study, Raman spectroscopy was used to monitor in real time the encapsulation of drugs into liposomes and the drug release, which are particularly important quality evaluation items. Furthermore, Raman spectroscopy combined with partial least-squares (PLS) analysis was used for quantitative drug evaluation to assess consistency with results from UV-visible spectrophotometry (UV), a common quantification method. The prepared various ciprofloxacin (CPFX) liposomes were placed in cellulose tubes, and a probe-type Raman spectrophotometer was used to monitor drug encapsulation, the removal of unencapsulated drug, and drug release characteristics in real time using a dialysis method. In the Raman spectra of the liposomes prepared by remote loading, the intensities of the CPFX-derived peaks increased upon drug encapsulation and showed a slight decrease upon removal of the unencapsulated drug. Furthermore, the peak intensity decreased more gradually during the drug release. In all Raman monitoring experiments, the discrepancy between quantified values of CPFX concentration in liposomes, as measured by Raman spectroscopy combined with partial least-squares (PLS) analysis, and those obtained through ultraviolet (UV) spectrophotometry was within 6.7%. The results revealed that the quantitative evaluation of drugs using a combination of Raman spectroscopy and PLS analysis was as accurate as the evaluation using UV spectrophotometry, which was used for comparison. These results indicate the promising potential of Raman spectroscopy as an innovative method for the quality evaluation of liposomal formulations.


Assuntos
Celulose , Lipossomos , Composição de Medicamentos/métodos , Análise Espectral Raman/métodos
2.
AAPS PharmSciTech ; 25(4): 79, 2024 Apr 08.
Artigo em Inglês | MEDLINE | ID: mdl-38589718

RESUMO

The development of suitable dosage forms is essential for an effective pharmacological treatment in children. Orally disintegrating tablets (ODTs) are attractive dosage forms that avoid swallowing problems, ensure dosage accuracy and are easy to administer as they disintegrate in the oral cavity. This study aimed to develop ODTs containing losartan potassium (LP) for the treatment of arterial hypertension in children. The ODTs, produced by the cost-effective manufacturing process of direct compression, consisted of a mixture of diluent, superdisintegrant, glidant and lubricant. Five superdisintegrants (croscarmellose sodium, two grades of crospovidone, sodium starch glycolate and pregelatinized starch) were tested (at two concentrations), and combined with three diluents (mannitol, lactose and sorbitol). Thus, thirty formulations were evaluated based on disintegration time, hardness and friability. Two formulations, exhibiting the best results concerning disintegration time (< 30 s), hardness and friability (≤ 1.0%), were selected as the most promising ones for further evaluation. These ODTs presented favourable drug-excipient compatibility, tabletability and flow properties. The in vitro dissolution studies demonstrated 'very rapid' drug release. Preliminary stability studies highlighted the requirement of a protective packaging. All quality properties retained appropriate results after 12 months of storage in airtight containers. In conclusion, the ODTs were successfully developed and characterised, suggesting a potential means to accomplish a final prototype that enables an improvement in childhood arterial hypertension treatment.


Assuntos
Hipertensão , Losartan , Humanos , Criança , Análise Custo-Benefício , Solubilidade , Administração Oral , Composição de Medicamentos/métodos , Excipientes , Hipertensão/tratamento farmacológico , Comprimidos , Dureza
3.
Chem Pharm Bull (Tokyo) ; 72(4): 374-380, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38599850

RESUMO

Tablets are the most commonly used dosage form in the pharmaceutical industry, and their properties such as disintegration, dissolution, and portability are influenced by their strength. However, in industry, the mixing fraction of powders to obtain a tablet compact with sufficient strength is determined based on empirical rules. Therefore, a method for predicting tablet strength based on the properties of a single material is required. The objective of this study was to quantitatively evaluate the relationship between the compression properties and tablet strength of powder mixtures. The compression properties of the powder mixtures with different plasticities were evaluated based on the force-displacement curves obtained from the powder compression tests. Heckel and compression energy analyses were performed to evaluate compression properties. During the compression energy analysis, the ratio of plastic deformation energy to elastic deformation energy (Ep/Ee) was assumed to be the plastic deformability of the powder. The quantitative relationship between the compression properties and tensile strength of the tablets was investigated. Based on the obtained relationship and the compression properties of a single material, a prediction equation was put forward for the compression properties of the powder mixture. Subsequently, a correlation equation for tablet strength was proposed by combining the values of K and Ep/Ee obtained from the Heckel and compression energy analyses, respectively. Finally, by substituting the compression properties of the single material and the mass fraction of the plastic material into the proposed equation, the tablet strength of the powder mixture with different plastic deformabilities was predicted.


Assuntos
Química Farmacêutica , Química Farmacêutica/métodos , Pós , Resistência à Tração , Comprimidos , Pressão , Composição de Medicamentos
4.
AAPS PharmSciTech ; 25(4): 81, 2024 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-38600252

RESUMO

MALCORE®, a novel manufacturing technology for drug-containing particles (DCPs), relies on the melt granulation method to produce spherical particles with high drug content. The crucial aspect of particle preparation through MALCORE® involves utilizing polymers that dissolve in the melt component, thereby enhancing viscosity upon heating. However, only aminoalkyl methacrylate copolymer E (AMCE) has been previously utilized. Therefore, this study aims to discover other polymers and comprehend the essential properties these polymers need to possess. The results showed that polyvinylpyrrolidone (PVP) was soluble in the stearic acid (SA) melt component. FTIR examination revealed no interaction between SA and polymer. The phase diagram was used to analyze the state of the SA and polymer mixture during heating. It revealed the mixing ratio and temperature range where the mixture remained in a liquid state. The viscosity of the mixture depended on the quantity and molecular weight of the polymer dissolved in SA. Furthermore, the DCPs prepared using PVP via MALCORE® exhibited similar pharmaceutical properties to those prepared with AMCE. In conclusion, understanding the properties required for polymers in the melt granulation process of MALCORE® allows for the optimization of manufacturing conditions, such as temperature and mixing ratios, for efficient and consistent drug layering.


Assuntos
Polímeros , Povidona , Tecnologia Farmacêutica/métodos , Temperatura , Excipientes , Tecnologia , Metacrilatos , Composição de Medicamentos/métodos , Solubilidade
5.
Eur J Pharm Biopharm ; 198: 114274, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38561067

RESUMO

Amorphous solid dispersions (ASDs) using proteins as carriers have emerged as a promising strategy for stabilizing amorphous drug molecules. Proteins possess diverse three-dimensional structures that significantly influence their own properties and may also impact the properties of ASDs. We prepared ß-lactoglobulin (BLG) with different contents of ß-sheet and α-helical secondary structures by initially dissolving BLG in different mixed solvents, containing different ratios of water, methanol/ethanol, and acetic acid, followed by spray drying of the solutions. Our findings revealed that an increase in α-helical content resulted in a decrease in the glass transition temperature (Tg) of the protein. Subsequently, we utilized the corresponding mixed solvents to dissolve both BLG and the model drug celecoxib (CEL), allowing the preparation of ASDs containing either ß-sheet-rich or α-helix/random coil-rich BLG. Using spray drying, we successfully developed BLG-based ASDs with drug loadings ranging from 10 wt% to 90 wt%. At drug loadings below 40 wt%, samples prepared using both methods exhibited single-phase ASDs. However, heterogeneous systems formed when the drug loading exceeded 40 wt%. At higher drug loadings, physical stability assessments demonstrated that the α-helix/random coil-rich BLG structure exerted a more pronounced stabilizing effect on the drug-rich phase compared to the ß-sheet-rich BLG. Overall, our results highlight the importance of considering protein secondary structure in the design of ASDs.


Assuntos
Água , Temperatura de Transição , Celecoxib/química , Temperatura , Solventes , Solubilidade , Composição de Medicamentos/métodos
6.
PLoS One ; 19(4): e0299501, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38603673

RESUMO

Mathematical models of epidermal and dermal transport are essential for optimization and development of products for percutaneous delivery both for local and systemic indication and for evaluation of dermal exposure to chemicals for assessing their toxicity. These models often help directly by providing information on the rate of drug penetration through the skin and thus on the dermal or systemic concentration of drugs which is the base of their pharmacological effect. The simulations are also helpful in analyzing experimental data, reducing the number of experiments and translating the in vitro investigations to an in-vivo setting. In this study skin penetration of topically administered caffeine cream was investigated in a skin-on-a-chip microfluidic diffusion chamber at room temperature and at 32°C. Also the transdermal penetration of caffeine in healthy and diseased conditions was compared in mouse skins from intact, psoriatic and allergic animals. In the last experimental setup dexamethasone, indomethacin, piroxicam and diclofenac were examined as a cream formulation for absorption across the dermal barrier. All the measured data were used for making mathematical simulation in a three-compartmental model. The calculated and measured results showed a good match, which findings indicate that our mathematical model might be applied for prediction of drug delivery through the skin under different circumstances and for various drugs in the novel, miniaturized diffusion chamber.


Assuntos
Cafeína , Absorção Cutânea , Animais , Camundongos , Cafeína/farmacologia , Composição de Medicamentos , Microfluídica , Administração Cutânea , Pele/metabolismo , Modelos Teóricos
8.
Int J Pharm Compd ; 28(2): 94-98, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38604139

RESUMO

Compounding magic mouthwash preparations can be a challenge. Although the actual preparation of the mouthwash is not difficult, there is very little published information about these preparations and much of the available data is very dated. Compounding pharmacists need to utilize their compounding resources and drug knowledge to help practitioners develop these formulations to meet the specific needs of their patients. This article discusses some of the more common ingredients used in mouthwash preparations and reviews the minimal data that is available on this topic.


Assuntos
Analgésicos , Antissépticos Bucais , Humanos , Composição de Medicamentos , Veículos Farmacêuticos
9.
Int J Pharm Compd ; 28(2): 138-145, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38604140

RESUMO

Pharmaceutical compounding has a crucial role for the health of patients, allowing the preparation of formulation out of market or for a personalized therapy. This study is aimed to conduct a screening of possible ready-to-use hydrophilic vehicles for the preparation of topical dosage forms. Incorporation tests of several active pharmaceutical ingredients were performed, and the physical stability of the extemporaneous formulations was assessed by performing an accelerated centrifuge test. The results showed that it was possible to realize several physically stable topical medications without using special equipment or instruments, guaranteeing a fast and repeatable preparation process. The goal of this work is to provide compounding pharmacists a table that summarizes some of the possible vehicles that can be used for the formulation of topical treatments.


Assuntos
Farmacêuticos , Humanos , Composição de Medicamentos/métodos
10.
Int J Pharm Compd ; 28(2): 151-155, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38604142

RESUMO

This study describes a new method for the preparation of extemporaneous paracetamol-based suspensions for pediatric and adult patients. This method allows the preparation of extemporaneous suspensions up to concentrations of 50 mg/mL by using a liquid base, named "Puccini". A high-pressure liquid chromatographic method was developed and validated for the determination of chemical stability of paracetamol when the formulations were stored at 4°C and 25°C. The chemical stability of the active pharmaceutical ingredient in the base was demonstrated for more than 90 days. Visual analyses of the formulations showed a phenomenon of precipitation at both storage temperatures, but the simple agitation of the formulations before its use re-established the formation of homogeneous suspensions.


Assuntos
Acetaminofen , Adulto , Humanos , Criança , Estabilidade de Medicamentos , Composição de Medicamentos , Suspensões , Administração Oral , Cromatografia Líquida de Alta Pressão , Armazenamento de Medicamentos
11.
Int J Pharm Compd ; 28(2): 146-150, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38604141

RESUMO

The preparation of formulations that are not currently on the market or prepared for customized therapy is possible by pharmaceutical compounding. In this study, incorporation tests of some active pharmaceutical ingredients in five ready-touse lipophilic semisolid vehicles were performed, and the physical stability of the prepared extemporaneous formulations was assessed by performing an accelerated centrifuge test. The results demonstrated that it was possible to formulate physically stable topical medications without using special equipment or instruments, ensuring a fast, efficient, and repeatable preparation process. The objective of this work was to provide to compounding pharmacists a table that summarizes some of the semisolid lipophilic vehicles, such as creams water/oil, and ointments, that can be used for the formulation of topical treatments.


Assuntos
Farmacêuticos , Humanos , Composição de Medicamentos/métodos
12.
Int J Pharm Compd ; 28(2): 156-160, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38604143

RESUMO

Diclofenac Sodium is a nonsteroidal anti-inflammatory drug (NSAID) that has analgesic, anti-inflammatory, and antipyretic properties, and has been found to be effective in treating a variety of acute and chronic pain and inflammatory conditions. A stability study was designed to assess the physical, chemical, and antimicrobial stability of three extemporaneously compounded bracketed Diclofenac Sodium formulations over time using a validated, stability indicating HPLC method. Diclofenac Sodium 1% and 15% were compounded in Medisca VersaPro™ Cream Base, VersaPro™ Gel Base and PLO Gel Mediflo™30 Compound Kit and stored at room temperature, in tightly closed, light resistant, plastic containers for 180 days. The organoleptic properties, pH, viscosity, and Diclofenac Sodium concentration of each formulation were evaluated at predetermined time points. Antimicrobial effectiveness testing of the compounded formulation according to USP <51> was also evaluated at the initial time point and after 180 days. The results demonstrated that all formulations remained within the specified stability criteria for the duration of the study. Therefore, an extended beyond-use-date of 180 days may be assigned to these compounded formulations under the studied conditions.


Assuntos
Anti-Infecciosos , Diclofenaco , Diclofenaco/uso terapêutico , Estabilidade de Medicamentos , Anti-Inflamatórios não Esteroides , Analgésicos , Composição de Medicamentos/métodos
13.
J Drugs Dermatol ; 23(3): 168-172, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38443123

RESUMO

BACKGROUND: Currently, there is only one topical medication approved by the U.S. Food and Drug Administration for alopecia, minoxidil 2.5% and 5%. With limited options, dermatologists often turn to compounding pharmacies for customized topical alopecia medications. OBJECTIVES: (1) to investigate the pricing and availabilities of compounded topical alopecia medications and (2) to investigate the delivery/mail options available. METHODS: 103 dermatological compounding pharmacies in the tri-state area were contacted. Data were collected on the prices of 11 different compounded formulations for alopecia, the highest concentration of minoxidil available, compounding accreditation status, and delivery. RESULTS: The majority (76.7% [79/103]) of pharmacies surveyed were responsive. Mean prices for 60 g or mL of medication were $70.44 for minoxidil 5%, $86.95 for minoxidil 5%/finasteride 0.5%, $159.13 for minoxidil 5%/bimatoprost 0.03%, $141.91 for minoxidil 5%/latanoprost 0.02%, $75.31 for finasteride 0.5%, $204.41 for tacrolimus 0.3%, $220.11 for tacrolimus 0.3%/minoxidil 5%/clobetasol 0.05%, $71.44 for cetirizine 1%, $74.93 for metformin 10%, $4,273.20 for tofacitinib 2%, and $1,840.42 for ruxolitinib 2%. Nearly all (93.5% [72/77]) of the pharmacies reported being able to compound minoxidil higher than the commercially available 5%, while 67.6% (50/74) were able to customize minoxidil to be made with <10% alcohol. Just over half (56.4% [44/78]) of the pharmacies were able to deliver to all tri-state areas. The mean delivery fee of pharmacies was $5.93 (n=77). Almost all of the pharmacies (98.7% [76/77]) claimed to be able to process and deliver medications within a week. If pharmacies were not located in the local vicinity, 44.6% (29/65) used a mailing service. CONCLUSION: This survey serves to expand clinicians' and patients' knowledge of the options and prices of topical compounded medications for alopecia. J Drugs Dermatol. 2024;23(3):     doi:10.36849/JDD.7697.


Assuntos
Finasterida , Minoxidil , Estados Unidos , Humanos , Tacrolimo , Alopecia/tratamento farmacológico , Composição de Medicamentos
14.
Chem Pharm Bull (Tokyo) ; 72(3): 298-302, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38479857

RESUMO

The current study aimed to explore the impact of buffer species on the dissolution behavior of orally disintegrating tablets (ODT) containing a basic polymer and its influence on bioequivalence (BE) prediction. Fexofenadine hydrochloride ODT formulations were used as the model formulations, Allegra® as the reference formulation, and generic formulations A and B as the test formulations. Allegra®, generic A, and generic B are ODT formulations that contain aminoalkyl methacrylate copolymers E (Eudragit® E, EUD-E), a basic polymer commonly used to mask the bitter taste of drugs. Both generic A and generic B have been known to be bioequivalent to Allegra®. The dissolution tests were conducted using a compendial paddle, with either bicarbonate (10 mM, pH 6.8) or phosphate buffer (25 mM, pH 6.8) as the dissolution media. A floating lid was employed to cover the surface of the bicarbonate buffer to prevent volatilization. Results indicated that in phosphate buffer, the dissolution profiles of Allegra and generic B significantly varied from that of generic A, whereas in the bicarbonate buffer, the dissolution profiles of Allegra, generic A, and generic B were comparable. These findings suggest that the use of bicarbonate buffer may offer a more precise prediction of human bioequivalence compared to phosphate buffer.


Assuntos
Bicarbonatos , Paladar , Terfenadina/análogos & derivados , Humanos , Polímeros , Solubilidade , Comprimidos , Fosfatos , Administração Oral , Composição de Medicamentos/métodos
15.
Carbohydr Polym ; 333: 121988, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38494207

RESUMO

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).


Assuntos
Celulose , Polímeros , Humanos , Solubilidade , Sistemas de Liberação de Medicamentos , Ésteres , Composição de Medicamentos , Liberação Controlada de Fármacos
16.
Methods Mol Biol ; 2789: 35-43, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38506989

RESUMO

Polymeric prodrugs have gained significant popularity as a strategy to enhance the bioavailability and improve the pharmacokinetic properties of active pharmaceutical ingredients (API). Since the amount of the API in a polymeric prodrug product directly impacts both safety and efficacy, there is a pressing need for robust and accurate analytical methods to quantify the API in these formulations. Presently, drug quantification methods include reversed-phase high-performance liquid chromatography (RP-HPLC) and size exclusion chromatography (SEC)-based molecular weight determination. Even though these methods are highly precise and reproducible, a deep understanding of chromatography is required for complex method development, including optimization of the elution profile and selecting the appropriate column and mobile phase. In this chapter, we introduce the automated elemental analyzer for drug quantification, which is simple to use and does not require special method development.


Assuntos
60416 , Composição de Medicamentos , Cromatografia em Gel , Cromatografia Líquida de Alta Pressão/métodos , Preparações Farmacêuticas
17.
Luminescence ; 39(3): e4711, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38501299

RESUMO

Ambroxol hydrochloride (AMX) and guaifenesin (GFN) are approved drugs utilized to treat coughs through their potent mucolytic and expectorant properties. Due to their massive, combined administration in many illnesses, there is a persistent need for their concurrent estimation in different pharmaceutical formulations. Two sensitive, environmentally friendly spectrofluorimetric methods were developed. AMX was determined using the first method (I) without interference from GFN. This method depends on the quenching of Erythrosine B (EB) native fluorescence at 552 nm after excitation at 527 nm due to the formation of a non-fluorescent AMX-EB ion-pair complex in Britton-Robinson buffer (BRB) solution pH (3.5). The concentration plot is linear over the 0.25-5.0 µg/mL range, with a mean percent found value of 99.74%. Method (II) depends on measuring the native fluorescence of aqueous GFN solution at two analytical wavelengths, either 300 or 600 nm, after excitation at 274 nm. Relative fluorescence intensity (RFI)-concentration plots are linear over the ranges of 0.02-0.5 and 0.1-2.0 µg/ml, with mean percent found at 99.96% and 99.91% at dual wavelengths, respectively. The proposed methods were successfully applied to assay both drugs in raw materials and different single and combined pharmaceutical formulations. These methods have been thoroughly validated following International Committee on Harmonisation (ICH) guidelines. National Environmental Methods Index, Analytical Eco-Scale, and Green Analytical Procedure Index were used to prove greenness, thereby enhancing their applicability. The proposed techniques provide straightforward, precise, and cost-effective solutions for routine formulation analysis in quality control laboratories.


Assuntos
Ambroxol , Guaifenesina , Guaifenesina/análise , Espectrometria de Fluorescência/métodos , Composição de Medicamentos , Preparações Farmacêuticas
18.
Ars pharm ; 65(2): 146-158, mar. 2024. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-231952

RESUMO

Introducción: el tratamiento del cáncer supone uno de los grandes desafíos a los que se enfrenta la sociedad cien-tífica actual. En esta lucha sanitaria, se desarrollan los anticuerpos conjugados a fármacos, capaces de lograr la muerte celular mediante el transporte y liberación de compuestos citotóxicos selectivamente sobre células tumorales. Se componen de un anticuerpo monoclonal (de naturaleza proteica) unido a un fármaco citotóxico (de carácter lipófilo) mediante un enlazador. Las formulaciones se han de diseñar para mantener dicha unión durante su almacenamiento y administración. Objetivo: identificar los medicamentos comercializados en España cuyo principio activo es un anticuerpo conjugado a fármaco, estudiando diferentes aspectos tecnofarmacéuticos, en especial los componentes de sus formulaciones. Método: dado que este tipo de medicamento pertenece al grupo ATC L01F, han sido identificados a través del bus-cador de la Agencia Española de Medicamentos y Productos Sanitarios. La consulta de sus fichas técnicas, artículos de revisión e investigación relacionados con el tema así como el Handbook of Pharmaceuticals Excipients, ha permitido realizar el estudio tecnofarmacéutico. Resultados: se han analizado distintos aspectos tecnofarmacéuticos: forma farmacéutica, vía de administración, conservación y, en especial, sus formulaciones. Se ha estudiado en profundidad la naturaleza del principio activo y los requisitos de las formulaciones en base a sus características. Conclusiones: los ocho anticuerpos conjugados a fármacos aprobados en España se presentan en forma de polvo liofilizado en vial que se deben almacenar entre 2-8 ºC. Para su administración, se reconstituyen obteniéndose inicialmente un concentrado, que posteriormente se diluye y administra en forma de perfusión intravenosa o goteo. Su formulación tipo incluye un lioprotector, un antiagregante, un regulador del pH y eventualmente antioxidantes o reductores de la viscosidad. (AU)


Introduction: cancer treatment is one of the great challenges facing today’s scientific society. In this health fight, drug-conjugated antibodies (ADCs) are being developed, drugs capable of causing cell death by transporting and releasing cytotoxic compounds into tumor cells. They are composed of a monoclonal antibody (of protein nature) linked to a cytotoxic drug (of lipophilic character) through a linker. Formulations must be designed to maintain this binding during storage and administration.Objective: identify the medicines marketed in Spain whose active ingredient is an antibody-drug conjugate, studying techno pharmaceutical aspects, especially the components of their formulations. Method: since this type of drugs belongs to the ATC group L01F, they have been identified through the search engine of the Spanish Agency of Medicines and Health Products. The search for their technical sheets, along with articles of review and research related to the topic, as well as the Handbook of Pharmaceuticals Excipients, has enabled the execution of the techno pharmaceutical study.the formulation of the tested conjugates to drugs marketed in Spain belonging to the ATC L01F group corresponding to “monoclonal antibodies and tested conjugated to drugs” identified through the search engine of the Spanish Agency of Medicines and Health Products has been studied. Results: different aspects of this group of drugs have been analyzed, such as the pharmaceutical form, the route of administration, conservation and especially the techno pharmaceutical formulation. The nature of the active ingredient and the requirements of the formulations based on their characteristics have been studied in depth. Conclusions: the eight antibody-drug conjugates approved in Spain are presented in the form of lyophilized powder in a vial and should be stored between 2-8 ºC... (AU)


Assuntos
Anticorpos Monoclonais/administração & dosagem , Anticorpos Monoclonais/análise , Anticorpos Monoclonais/farmacologia , Imunoconjugados/administração & dosagem , Imunoconjugados/análise , Imunoconjugados/farmacologia , Composição de Medicamentos , Espanha
19.
AAPS PharmSciTech ; 25(4): 67, 2024 Mar 22.
Artigo em Inglês | MEDLINE | ID: mdl-38519767

RESUMO

Despite being discovered over five decades ago, little is still known about ivermectin. Ivermectin has several physico-chemical properties that can result in it having poor bioavailability. In this study, polymorphic and co-crystal screening was used to see if such solid-state modifications can improve the oil solubility of ivermectin. Span® 60, a lipophilic non-ionic surfactant, was chosen as co-former. The rationale behind attempting to improve oil solubility was to use ivermectin in future topical and transdermal preparations to treat a range of skin conditions like scabies and head lice. Physical mixtures were also prepared in the same molar ratios as the co-crystal candidates, to serve as controls. Solid-state characterization was performed using X-ray powder diffraction (XRPD), Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The FTIR spectra of the co-crystal candidates showed the presence of Span® 60's alkyl chain peaks, which were absent in the spectra of the physical mixtures. Due to the absence of single-crystal X-ray data, co-crystal formation could not be confirmed, and therefore these co-crystal candidates were referred to as co-processed crystalline solids. Following characterization, the solid-state forms, physical mixtures and ivermectin raw material were dissolved in natural penetration enhancers, i.e., avocado oil (AVO) and evening primrose oil (EPO). The co-processed solids showed increased oil solubility by up to 169% compared to ivermectin raw material. The results suggest that co-processing of ivermectin with Span® 60 can be used to increase its oil solubility and can be useful in the development of oil-based drug formulations.


Assuntos
Ivermectina , Óleos , Solubilidade , Difração de Raios X , Composição de Medicamentos , Varredura Diferencial de Calorimetria , Espectroscopia de Infravermelho com Transformada de Fourier/métodos
20.
AAPS PharmSciTech ; 25(3): 59, 2024 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-38472682

RESUMO

Pazopanib hydrochloride (PAZ) displays strong intermolecular interaction in its crystal lattice structure, limiting its solubility and dissolution. The development of lipid-based formulations (LbFs) resulted in reduced PAZ loading due to solid-state mediated low liposolubility. This study aims to enhance our understanding of PAZ crystallinity by synthesizing a lipophilic salt and phospholipid complex and investigating its impact on the drug loading in LbFs. The synthesized pazopanib lipophilic salt and phospholipid complex were extensively characterized. The solid form of pazopanib docusate (PAZ-DOC) and pazopanib phospholipid complex (PAZ-PLC) indicates a reduction in characteristic diffraction peaks of crystalline PAZ. The lipid formulations were prepared using synthesized PAZ-DOC and PAZ-PLC, where PAZ-DOC demonstrated six fold higher drug solubility than the commercial salt form and twice that of the PAZ-PLC due to differences in the crystallinity. Further, the impact of salt and complex formation was assessed on the aqueous drug solubilization using lipolysis and multimedia dissolution experiments. Moreover, the LbFs showed notably faster dissolution compared to the crystalline PAZ and marketed tablet. In terms of in vivo pharmacokinetics, the PAZ-DOC LbF exhibited a remarkable 11-fold increase in AUC value compared to the crystalline PAZ and a 2.5-fold increase compared to Votrient®. Similarly, PAZ-PLC LbF showed an approximately nine fold increase in drug exposure compared to the crystalline PAZ, and a 2.2-fold increase compared to Votrient®. These findings suggest that disrupting the crystallinity of drugs and incorporating them into LbF could be advantageous for enhancing drug loading and overcoming limitations related to drug absorption.


Assuntos
Indazóis , Fosfolipídeos , Pirimidinas , Sulfonamidas , Disponibilidade Biológica , Composição de Medicamentos , Cloreto de Sódio , Ácido Dioctil Sulfossuccínico , Solubilidade , Administração Oral
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