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Human Gingival Fibroblasts Response to Different Endodontic Sealers: An In Vitr...

Noites, Rita; Tavares, Inês; Cardoso, Miguel; Carreira, Isabel M.; Bartolomeu, Maria; Duarte, Ana S.; Ribeiro, Ilda Patrícia

Endodontic treatment aims to eliminate infection of the root canals and fill the dental pulp space. The biocompatibility studies of the sealers used in root canals obturation are crucial since they are applied in direct contact with periradicular tissues. Objective: The aim of this study was to evaluate the cytotoxicity of three root canal sealers—AH Plus, Bio MTA+, and Bio C sealer—on immortalized human gingiv...


Human gingival fibroblasts response to different endodontic sealers: an in vitr...

Noites, Rita; Tavares, Inês; Cardoso, Miguel; Carreira, Isabel M.; Duarte, Ana S.

Endodontic treatment aims to eliminate infection of the root canals and fill the dental pulp space. The biocompatibility studies of the sealers used in root canals obturation are crucial since they are applied in direct contact with periradicular tissues. Objective: The aim of this study was to evaluate the cytotoxicity of three root canal sealers—AH Plus, Bio MTA+, and Bio C sealer—on immortalized human gingiv...


Cytotoxicity assessment of endodontic sealers: metabolic activity, morphology a...

Tavares, Inês Moura; Ribeiro, Ilda P.; Pais, Cláudia; Laranjo, Mafalda; Jardim, Ana; Mascarenhas, Alexandra; Zuzarte, Mónica; Cardoso, Miguel

Introduction: Endodontic treatment aims to eliminate infection of the root canals and fill the dental pulp space, being, the obturation of root canals an important step. The study of the toxicity/biocompatibility of the sealers used to fill the root canals is crucial since they are applied into direct contact with periradicular tissues.There are several types of sealers, categorized according to their main chem...


Impact of prematurity on newborn urine: a metabolomics strategy to identify mar...

Duarte, Daniela; Pita, Cristina; Negrão, Fátima; Carreira, Isabel M.; Almeida, Maria do Céu; Domingues, Pedro; Gil, Ana M.


An acquired stable variant of a dicentric dic(9;20) and complex karyotype in a ...

Wafa, Abdulsamad; Jarjour, Rami A.; Aljapawe, Abdulmunim; ALmedania, Suher; Liehr, Thomas; Melo, Joana B.; Carreira, Isabel M.; Othman, Moneeb A. K.

Background: About 25 years ago, the acquired chromosome abnormality dicentric dic(9;20)(p11 ~ 13;q11) was seen described as a non-random aberration in B-cell precursor acute lymphoblastic leukemia (BCP-ALL). Yet, about 200 cases were reported. However, dicentric dic(9;20) is a subtle abnormality which easily may be mixed up with monosomy 20 and/or del(9p). The dicentric dic(9;20) can be found as a sole chromoso...


A new childhood ALL case with an extremely complex karyotype and acute spontane...

Wafa, Abdulsamad; Jarjour, Rami A; Alolabi, Doaa; Liehr, Thomas; Hamdan, Othman; Melo, Joana B.; Carreira, Isabel M.; Othman, Moneeb A. K.

Background: B cell precursor acute lymphoblastic leukemia (B-ALL) is the most common malignancy of childhood, with, after corresponding treatment, an overall complete remission rate of 90%. Approximately 75% of B-ALL cases harbor recurrent abnormalities, including so-called complex karyotypes (CK). Tumor lysis syndrome (TLS) is a metabolic abnormality which may arise during cancer therapy and also, extremely ra...


Molecular cytogenetic pilot study on pleomorphic adenomas of salivary glands

Thielker, Jovanna; Weise, Anja; Othman, Moneeb A. K.; Carreira, Isabel M.; Melo, Joana B.; Von Eggeling, Ferdinand; Guntinas-Lichius, Orlando

Pleomorphic adenomas (PAs) of salivary glands are the most frequent entity of solid parotid tumors. Nonetheless, their genetics is not yet well understood. Thus, the current study characterized 14 PAs using a unique combination of cytogenetic, molecular cytogenetic and/or molecular karyotyping based approaches. The current study applied G-banding based on trypsin treatment and Giemsa-staining in peripheral bloo...


Probability distribution of copy number alterations along the genome: an algori...

Esteves, Luísa; Caramelo, Francisco; Ribeiro, Ilda Patrícia; Carreira, Isabel M.; Melo, Joana Barbosa de

Copy number alterations (CNAs) comprise deletions or amplifications of fragments of genomic material that are particularly common in cancer and play a major contribution in its development and progression. High resolution microarray-based genome-wide technologies have been widely used to detect CNAs, generating complex datasets that require further steps to allow for the determination of meaningful results. In ...


Koolen-de Vries syndrome – National Case Series with clinical and molecular cha...

Soares, Marta P.; Rodrigues, Márcia; Dupont, Juliette; Medeira, Ana; Freixo, João; Nunes, Sofia; Cordeiro, Isabel; Travessa, André; Soares, Gabriela

Introduction: Koolen-de Vries Syndrome (KdVS) is a rare genetic condition, caused by a 17q21.31 microdeletion, or a pathogenic variant in KANSL1 gene. The clinical picture includes developmental delay (DD)/intellectual disability (ID) with expressive language particularly impaired, dysmorphisms, neonatal hypotonia, and friendly behaviour. Aim: To characterize at the molecular and clinical levels all patients in...


Stroma-derived IL-6, G-CSF and Activin-A mediated dedifferentiation of lung car...

Rodrigues, Carlos F. D.; Serrano, Eurico; Patrício, Maria I.; Val, Mariana; Albuquerque, Patrícia; Fonseca, João; Gomes, Célia M. F.; Abrunhosa, Antero

Cancer stem cells (CSCs) are a small population of resistant cells inhabiting the tumors. Although comprising only nearly 3% of the tumor mass, these cells were demonstrated to orchestrate tumorigenesis and differentiation, underlie tumors' heterogeneity and mediate therapy resistance and tumor relapse. Here we show that CSCs may be formed by dedifferentiation of terminally differentiated tumor cells under stre...


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