Rita Negrão

Prof. Rita Negrão

1. Department of Biomedicine - Biochemistry Unit, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
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Research Focus & Metrics

Academic Career Length

21Years (2006-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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7 November 2013 in Journal of Natural Products
Verified
Journal Article
Closed access
Raquel CostaRaquel Costa
Raquel Costa
RNRita Negrão
Rita Negrão
Ines M. ValenteInes M. Valente
Ines M. Valente
ÂCÂngela Castela
Ângela Castela
DDDelfim Duarte
Delfim Duarte
Raquel SoaresRaquel Soares
Raquel Soares

23 August 2017 in BMC Geriatrics
Verified
Journal Article
Open access
PDF file
JMJoana Mendes
Joana Mendes
TATeresa F Amaral
Teresa F Amaral
NBNuno Borges
Nuno Borges
ASAlejandro Santos
Alejandro Santos
PPPatrícia Padrão
Patrícia Padrão
RNRita Negrão
Rita Negrão
Handgrip strength is used to identify sarcopenia and frailty phenotypes, being a potential predictor of mortality in older adults. However, uniformity is lacking in the reference values. This study aimed to describe handgrip strength values of older population aged ≥65 years in Portugal, considering the possible influence of anthropometric parameters. A cross-sectional study was conducted in Portugal, among 1500 older adults aged ≥65 years old, according to “The Nutrition UP 65 Study Protocol”. Demographic data were collected and cognitive performance, subjective general health, physical activity, anthropometric parameters and nutritional status were assessed and analysed. Handgrip strength data was obtained with a Jamar dynamometer. A Pubmed/Medline search was carried out to compare handgrip strength data between Portuguese older adults and other older populations. Handgrip strength was higher among men than among women (30.3 ± 9.2 Kgf vs 18 ± 5.4 Kgf, p < 0.001, respectively). In general, handgrip strength values of Portuguese older adults were lower than other older populations. In our sample, age, cognitive and nutritional status, self-reported sitting time and practice of physical activity were significantly correlated with handgrip strength in both sexes. Concerning anthropometric parameters, height was the most significantly correlated with handgrip strength (r = 0.34, p < 0.001, in women and r = 0.40, p < 0.001, in men). This study described, for the first time, handgrip strength values of Portuguese population aged ≥65 years, according to age and to sex-specific tertiles of height. The definition of handgrip strength reference values in this age group merits further reflection.

1 July 2017 in The Journal of Nutritional Biochemistry
Verified
Journal Article
Closed access
Raquel CostaRaquel Costa
Raquel Costa
IRIlda Rodrigues
Ilda Rodrigues
LGLuísa Guardão
Luísa Guardão
Sílvia Rocha-RodriguesSílvia Rocha-Rodrigues
Sílvia Rocha-Rodrigues
CSCarolina Silva
Carolina Silva
Raquel SoaresRaquel Soares
Raquel Soares

27 August 2010 in Journal of Cellular Biochemistry
Verified
Journal Article
Closed access
PDF file
RNRita Negrão
Rita Negrão
Raquel CostaRaquel Costa
Raquel Costa
DDDelfim Duarte
Delfim Duarte
Tiago Taveira-GomesTiago Taveira-Gomes
Tiago Taveira-Gomes
MMMário Mendanha
Mário Mendanha
Raquel SoaresRaquel Soares
Raquel Soares

1 December 2018 in Annals of Medicine & Surgery
Verified
Journal Article
Open access
TFTomás Fontes
Tomás Fontes
Inês BrandãoInês Brandão
Inês Brandão
RNRita Negrão
Rita Negrão
MMMaria João Martins
Maria João Martins
RMRosário Monteiro
Rosário Monteiro
Autologous fat grafting is widely used for soft-tissue augmentation and replacement in reconstructive and aesthetic surgery providing a biocompatible, natural and inexpensive method. Multiple approaches have been developed in the past years, varying in the location of adipose tissue donor-sites, use of wetting solutions, harvesting, processing and placing techniques. Despite many advances in this subject, the lack of standardization in the protocols and the unpredictability of the resorption of the grafted tissue pose a significant limitation for graft retention and subsequent filling. In this review, we discuss several approaches and methods described over the last years concerning the harvesting of autologous fat grafts. We focus on contents such as the best donor-site, differences between existing harvesting techniques (namely tissue resection, hand aspiration or liposuction techniques), recommended harvesting cannula diameters, pressure application and volume of wetting solution injected prior aspiration. Results and comparisons between methods tend to vary according to the outcome measured, thus posing a limitation to pinpoint the most efficient methods to apply in fat grafting. Additionally, the lack of a standard assay to determine viability or volume augmentation of fat grafting remains another limitation to obtain universally accepted grafting procedures and protocols.

29 July 2013 in Allergy
Verified
Journal Article
Closed access
PDF file
DDDelfim Duarte
Delfim Duarte
Tiago Taveira-GomesTiago Taveira-Gomes
Tiago Taveira-Gomes
OSOksana Sokhatska
Oksana Sokhatska
CPC. Palmares
C. Palmares
Raquel CostaRaquel Costa
Raquel Costa
VGVanessa Garcia-Larsen
Vanessa Garcia-Larsen