19 documents found, page 1 of 2

Sort by Issue Date

Exploring bio-based alternatives to cyclopentasiloxane: paving the way to promi...

Castro, Mariana; Roque, Catarina; Loureiro, Ana Isabel Sá; Guimarães, Diana Isabel Pereira; Silva, C.; Ribeiro, Artur; Cavaco-Paulo, Artur

Supplementary data associated with this article can be found in the online version at doi:10.1016/j.colsurfa.2024.135915.; In recent years, significant efforts have been made to identify suitable alternatives for silicones commonly used in daily cosmetic products. However, green alternatives have faced challenges in replicating the unique properties of silicone-based formulations, particularly cyclopentasiloxan...


Physicochemical properties of new silicone alternatives unraveled by experiment...

Ferreira, Tiago; Rocha, Diana; Freitas, David Silva; Noro, Jennifer Martins; Castro, Mariana de; Loureiro, Ana Isabel Sá; Silva, Carla

The cosmetic industry has recognized an increasing demand for environmentally sustainable solutions due to the classification of certain commonly used components as bioaccumulative and hazardous. The European Union has implemented restrictions on the utilization of some components, including silicones, which limit their concentration. The present investigation intends to find new solutions for cosmetic formulat...


Toward a platform for the treatment of burns: An assessment of nanoemulsions vs...

Araújo, Gabriela de Moraes Soares; Loureiro, Ana Isabel Sá; Rodrigues, Jamile Lima; Barros, Paula Alice Bezerra; Halicki, Priscila Cristina Bartolomeu

Curcumin is a highly promising substance for treating burns, owing to its anti-inflammatory, antioxidant, antimicrobial, and wound-healing properties. However, its therapeutic use is restricted due to its hydrophobic nature and low bioavailability. This study was conducted to address these limitations; it developed and tested two types of lipid nanocarriers, namely nanoemulsions (NE-CUR) and nanostructured lipi...


Addressing the structural organization of silicone alternatives in formulations...

Ferreira, Tiago; Loureiro, Ana Isabel Sá; Noro, Jennifer Martins; Cavaco-Paulo, Artur; Castro, Tarsila Gabriel

The world of cosmetics is an always-evolving field with constant updates on its formulation components. The current reality asks for an ever-increasing need for natural and sustainable replacements for synthetic compounds in all fields of modern consumer products. However, the research and development stages of finding these alternatives can be an expensive, time-consuming, and often wasteful process that turns...


Designing and characterization of curcumin-loaded nanotechnological dressings: ...

Araújo, Gabriela de Moraes Soares; Loureiro, Ana Isabel Sá; Rodrigues, Jamile Lima; Yurgel, Virginia Campello; Silva, C.; Cavaco-Paulo, Artur

Burns affect the skin and appendages, impair their function, and become favorable regions for bacterial infections. Owing to time-consuming and costly treatments, burns have been considered a public health problem. The limitations of the treatments used for burns have motivated the search for more efficient alternatives. Curcumin has several potential properties such as anti-inflammatory, healing, and antimicro...


Increased encapsulation efficiency of methotrexate in liposomes for rheumatoid ...

Guimarães, Diana Isabel Pereira; Noro, Jennifer Martins; Loureiro, Ana Isabel Sá; Lager, Franck; Renault, Gilles; Cavaco-Paulo, Artur; Nogueira, Eugénia

Methotrexate (MTX) is a common drug used to treat rheumatoid arthritis. Due to the excessive side effects, encapsulation of MTX in liposomes is considered an effective delivery system, reducing drug toxicity, while maintaining its efficacy. The ethanol injection method is an interesting technique for liposome production, due to its simplicity, fast implementation, and reproducibility. However, this method occas...


Poloxamer 407 based-nanoparticles for controlled release of methotrexate

Moura, A.; Noro, Jennifer Martins; Cerqueira, P.; Silva, C.; Cavaco-Paulo, Artur; Loureiro, Ana Isabel Sá

Poloxamer 407 (P407)-based nanoparticles were produced by the high pressure homogenization method for the encapsulation and delivery of methotrexate (MTX), aiming intravenous therapeutic applications. The surface of these nanoparticles was functionalized by conjugation of P407 with folic acid (FA) or with MTX, which served as targeting ligand agents. MTX-P407 conjugate was also developed to increase the final d...


Quantification of drugs encapsulated in liposomes by 1H NMR

Guimarães, Diana Isabel Pereira; Noro, Jennifer Martins; Loureiro, Ana Isabel Sá; Cavaco-Paulo, Artur; Nogueira, Eugénia Sofia Costa

Liposomes are one of the most important and extensively studied drug delivery system due to their ability to encapsulate different kinds of drugs. Exploiting the advantages of 1H Nuclear Magnetic Resonance (NMR) spectrometry, we established a rapid and easy method for quantification of drugs encapsulated in liposomes. An internal standard, pyridine, was used for quantitative determination of drug concentration....


PTS micelles for the delivery of hydrophobic methotrexate

Cerqueira, Patrícia; Noro, Jennifer Martins; Moura, Sofia; Guimarães, Diana; Silva, Carla; Cavaco-Paulo, Artur; Loureiro, Ana Isabel Sá

Polyoxyethanyl--tocopheryl sebacate (PTS) is an amphiphilic compound with self-emulsifying properties known to form micelles. In this work, we report the production of PTS micelles for the encapsulation and delivery of a hydrophobic derivative of methotrexate, MTX di-ethylated (MTX-OEt). We optimized the micelles production by testing two different techniques: auxiliary solvent and sonication. Small and homogen...


BSA/ASN/Pol407 nanoparticles for acute lymphoblastic leukemia treatment

Tinoco, Ana Catarina Malheiro; Passos, Marisa Sárria Pereira; Loureiro, Ana Isabel Sá; Parpot, Pier; Espiña, Begoña; Gomes, Andreia C

During the treatment of acute lymphoblastic leukemia (ALL) with asparaginase (ASN) there is an accumulation of ammonia in the body as result of asparagine hydrolysis. This accumulation known as hyperammonemia is one of the main side-effects of this therapy. To avoid hyperammonemia is urgent to develop new strategies for ammonia retention. Herein is presented the immobilization of ASN into bovine serum albumin/p...


19 Results

Queried text

Refine Results

Author





















More optionsLess options

Date










More optionsLess options

Document Type




Funding



Access rights



Resource


Subject





















More optionsLess options