49 documents found, page 1 of 5

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Gadoteric acid and gadolinium exposure – what is the impact on kidney gene expr...

Coimbra, Carla; Rocha, Susana; Viana, Sofia D.; Rebelo, Rute; Valente, Maria João; Catarino, Cristina; Belo, Luís; Bronze-da-Rocha, Elsa; Reis, Flávio

Background: The nephrotoxicity of gadolinium [Gd (III)] has been reported, raising concerns about the safety of gadolinium-based contrast agents (GBCA). Gd (III) exposure, in renal tubular cells (HK-2), causes apoptosis, and leads to upregulation of genes related to lipogenesis/lipolysis and to signaling pathways related to inflammation/hypoxia [1].Gadoteric acid (Gd-DOTA), a macrocyclic GBCA, appears to be one...

Date: 2025   |   Origin: Scientific Letters

Gadolinium and gadoteric acid exposure induce long-term down-regulation in eryt...

Coimbra, Susana; Rocha, Susana; D. Viana, Sofia; Rebelo, Rute; Rocha-Pereira, Petronila; Valente, Maria João; Catarino, Cristina; Bronze-da-Rocha, Elsa

Background: Gadolinium-based contrast agents (GBCA) differ in their potential to release gadolinium [Gd (III)], known to be toxic. Gadoteric acid (Gd-DOTA) is a macrocyclic GBCA, with a more stable structure. After GBCA exposure, Gd (III) retention in red blood cells (RBC) and kidney has been reported [1,2]. Nephrogenic systemic fibrosis, a severe condition found in renal disease patients exposed to GBCA, is as...

Date: 2024   |   Origin: Scientific Letters

Short-term and long-term effects of gadolinium and gadoteric acid exposure on r...

Coimbra, Susana; Rocha, Susana; D. Viana, Sofia; Rebelo, Rute; Rocha-Pereira, Petronila; Valente, Maria João; Catarino, Cristina; Bronze-da-Rocha, Elsa

Background: There are currently concerns about the safety of gadolinium-based contrast agents (GBCA), as they can release gadolinium [Gd (III)], known to be toxic. Free Gd (III) deposition at different organs, as kidney and liver, has been reported [1,2]. We found that Gd (III) promotes inflammation and fibrosis in proximal tubular cells [3]. GBCA with macrocyclic structure, as gadoteric acid (Gd-DOTA), are con...

Date: 2024   |   Origin: Scientific Letters

Subpopulations of High-Density Lipoprotein: Friends or Foes in Cardiovascular D...

Coimbra, Susana; Reis, Flávio; Valente, Maria João; Rocha, Susana; Catarino, Cristina; Rocha-Pereira, Petronila; Sameiro-Faria, Maria

Dyslipidemia is a major traditional risk factor for cardiovascular disease (CVD) in chronic kidney disease (CKD) patients, although the altered lipid profile does not explain the number and severity of CVD events. High-density lipoprotein (HDL) is a heterogeneous (size, composition, and functionality) population of particles with different atherogenic or atheroprotective properties. HDL-cholesterol concentratio...


Effects of statins therapy on LDL subfractions and inflammation in end-stage re...

Coimbra, Susana; Reis, Flávio; Nunes, Sara; Viana, Sofia; Valente, Maria João; Rocha, Susana; Catarino, Cristina; Rocha-Pereira, Petronila


The protective role of adiponectin for lipoproteins in end-stage renal disease ...

Coimbra, Susana; Reis, Flávio; Nunes, Sara; Viana, Sofia; Valente, Maria João; Rocha, Susana; Catarino, Cristina; Rocha-Pereira, Petronila

Cardiovascular disease (CVD) events are the main causes of death in end-stage renal disease (ESRD) patients on dialysis. The number and severity of CVD events remain inappropriate and difficult to explain by considering only the classic CVD risk factors. Our aim was to clarify the changes and the relationship of lipoprotein subfractions with other CVD risk factors, namely, body mass index (BMI) and adipokines, ...


Hepcidin-25 and treatment with erythropoiesis stimulating agents are independen...

Belo, Luís; Rocha, Susana; Valente, Maria João; Coimbra, Susana; Catarino, Cristina; Bronze-da-Rocha, Elsa; Carvalho, Márcia; Rocha-Pereira, Petronila


Desempenho de ferramentas in silico: Avaliação de variantes de mutações missens...

Rodrigues, Carina; Santos-Silva, Alice; Costa, Elísio; Bronze-da-Rocha, Elsa

Variations in the gene encoding uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) are particularly important because they have been associated with hyperbilirubinemia in Gilbert’s and Crigler-Najjar syndromes as well as with changes in drug metabolism. Several variants associated with these phenotypes are non-synonymous single nucleotide polymorphisms (nsSNPs). Bioinformatics approaches have gained incre...

Date: 2016   |   Origin: Biblioteca Digital do IPB

Adipokine gene single-nucleotide polymorphisms in portuguese obese adolescents:...

Nascimento, Henrique; Vieira, Emília; Coimbra, Susana; Catarino, Cristina; Costa, Elísio; Bronze-da-Rocha, Elsa; Rocha-Pereira, Petronila

Background: The genetic contribution to obesity and to circulating adipokine levels has not been completely clarified. We aimed to evaluate adipokine genes' single-nucleotide polymorphism (SNP) prevalence and its association with circulating adipokine levels and risk factors for cardiovascular disease in an obese Portuguese pediatric population. Methods: Two hundred forty-eight obese adolescents (mean age 13.4 ...


Resistance to Recombinant Human Erythropoietin Therapy in a Rat Model of Chroni...

Garrido, Patrícia; Ribeiro, Sandra; Fernandes, João; Vala, Helena; Rocha-Pereira, Petronila; Bronze-da-Rocha, Elsa; Belo, Luís; Costa, Elísio

This study aimed to elucidate the mechanisms explaining the persistence of anemia and resistance to recombinant human erythropoietin (rHuEPO) therapy in a rat model of chronic kidney disease (CKD)-associated anemia with formation of anti-rHuEPO antibodies. The remnant kidney rat model of CKD induced by 5/6 nephrectomy was used to test a long-term (nine weeks) high dose of rHuEPO (200 UI/kg bw/week) treatment. H...


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