Cristina D Mambet

Dr. Cristina D Mambet

orcid

Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

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

Representative Publications

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18 January 2022 in Journal of Cellular and Molecular Medicine
Verified
Journal Article
Open access
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MEMihaela Economescu
Mihaela Economescu
Coralia BleotuCoralia Bleotu
Coralia Bleotu
CGCamelia Grancea
Camelia Grancea
DCDaniela Chiriac
Daniela Chiriac
Anca BotezatuAnca Botezatu
Anca Botezatu
SRSimona Maria Ruta
Simona Maria Ruta
SARS‐CoV‐2 vaccines are highly efficient against severe forms of the disease, hospitalization and death. Nevertheless, insufficient protection against several circulating viral variants might suggest waning immunity and the need for an additional vaccine dose. We conducted a longitudinal study on the kinetics and persistence of immune responses in healthcare workers vaccinated with two doses of BNT162b2 mRNA vaccine with or without prior SARS‐CoV‐2 infection. No new infections were diagnosed during follow‐up. At 6 months, post‐vaccination or post‐infection, despite a downward trend in the level of anti‐S IgG antibodies, the neutralizing activity does not decrease significantly, remaining higher than 75% (85.14% for subjects with natural infection, 88.82% for vaccinated after prior infection and 78.37% for vaccinated only). In a live‐virus neutralization assay, the highest neutralization titres were present at baseline and at 6 months follow‐up in persons vaccinated after prior infection. Anti‐S IgA levels showed a significant descending trend in vaccinated subjects (p < 0.05) after 14 weeks. Cellular immune responses are present even in vaccinated participants with declining antibody levels (index ratio 1.1–3) or low neutralizing activity (30%–40%) at 6 months, although with lower T‐cell stimulation index (p = 0.046) and IFN‐γ secretion (p = 0.0007) compared to those with preserved humoral responses.

12 May 2020 in Clinical Chemistry and Laboratory Medicine (CCLM)
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GWGijsbert Wieringa
Gijsbert Wieringa
JQJosep Queraltó
Josep Queraltó
EHEvgenija Homšak
Evgenija Homšak
NJNuthar Jassam
Nuthar Jassam
ECEtienne Cavalier
Etienne Cavalier
AŠAna-Maria Šimundić
Ana-Maria Šimundić
European Union (EU) Directive 2013/55/EC (The Recognition of Professional Qualifications) allows Member States to decide on a common set of minimum knowledge, skills and competences that are needed to pursue a given profession through a Common Training Framework. To be adopted the framework must combine the knowledge, skills and competences of at least one third of the Member States. Professionals who have gained their qualifications under a Common Training Framework will be able to have these recognised automatically within the Union. The backbone of the European Federation of Clinical Chemistry and Laboratory Medicine’s (EFLM) proposed Common Training Framework for non-medical Specialists in Laboratory Medicine is outlined here. It is based on an Equivalence of Standards in education, training, qualifications, knowledge, skills, competences and the professional conduct associated with specialist practice. In proposing the recognition of specialist practice EFLM has identified 15 EU Member States able to meet Equivalence and in whom the profession and/or its training is regulated (an additional EU Commission requirement). The framework supports and contributes to the Directive’s enabling goals for increasing professional mobility, safeguarding consumers and ensuring a more equitable distribution of skills and expertise across the Member States. It represents EFLM’s position statement and provides a template for professional societies and/or competent authorities to engage with the EU Commission.

1 December 2014 in Journal of Immunoassay and Immunochemistry
Verified
Journal Article
Closed access
LNLaura Georgiana Necula
Laura Georgiana Necula
Cristina D MambetCristina D Mambet
Cristina D Mambet
Radu AlbulescuRadu Albulescu
Radu Albulescu
CDCarmen Cristina Diaconu
Carmen Cristina Diaconu
Epigenetic processes including aberrant promoter methylation of tumor suppressor gene play a key role in gastric carcinogenesis. TET proteins are involved in DNA demethylation; many cancers, haematological or solid, present loss-of-function mutations and aberrant expression/regulation of TET. In gastric cancer there are few studies reporting a decreased expression of TET and associations between these proteins and signaling pathways involved in carcinogenesis. Identifying connections between aberrant expression of TET, disruption of the balance between DNA methylation and demethylation and their association with gastric carcinogenesis might be useful for the development of novel therapeutic approaches.

5 July 2018 in Journal of Cellular and Molecular Medicine
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Journal Article
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Cristina D MambetCristina D Mambet
Cristina D Mambet
LNLaura Necula
Laura Necula
SMSimona Mihai
Simona Mihai
LMLilia Matei
Lilia Matei
Coralia BleotuCoralia Bleotu
Coralia Bleotu
CDCarmen Cristina Diaconu
Carmen Cristina Diaconu
Alterations in the bone marrow niche induced by abnormal production of cytokines and other soluble factors have been associated with disease progression in classical BCR‐ABL1 negative myeloproliferative neoplasms (MPN). Variations in circulating proteins might reflect local disease processes and plasma proteome profiling could serve to identify possible diagnostic and prognostic biomarkers. We employed a human cytokine array to screen for 105 distinct analytes in pooled plasma samples obtained from untreated young MPN patients (<35 years) with different clinical phenotypes and driver mutations, as well as from healthy individuals. Among molecules that exhibited significantly increased levels in MPN patients versus controls, the top of the list was represented by Dickkopf‐related protein 1 (Dkk‐1), which also showed the highest potential for discrimination between MPN subtypes. In the next step, a quantitative ELISA was used to measure plasma Dkk‐1 levels in 30 young‐onset MPN—10 essential thrombocythemia (ET), 10 polycythemia vera (PV), 10 pre‐fibrotic primary myelofibrosis (pre‐PMF)—and 10 controls. The results suggested that plasma Dkk‐1 levels could differentiate ET from pre‐PMF, in JAK2 V617F‐positive as well as in CALR‐positive patients, and also ET from PV in JAK2 V617F‐positive patients.

28 October 2022 in Medicina
Verified
Journal Article
Open access
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IIIuliana Iordan
Iuliana Iordan
MOMinodora Onisai
Minodora Onisai
AVAna-Maria Vladareanu
Ana-Maria Vladareanu
Cristina D MambetCristina D Mambet
Cristina D Mambet
MEMARINESCU C ELENA-CRISTINA
MARINESCU C ELENA-CRISTINA
HBHoria Bumbea
Horia Bumbea
ATL is a rare but a highly aggressive T-cell neoplasm associated with human T-cell leukemia virus-1 (HTLV-1) infection. Human T-cell lymphotropic virus type-1 (HTLV-1) is a oncogenic retrovirus responsible for the development of adult T-cell leukemia (ATL), but also for other non-malignant diseases, such as HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). HTLV-1 has a higher prevalence in Japan, the Caribbean, South America, intertropical Africa, Romania, and northern Iran. ATL patients can have an extensive spectrum of neurological manifestations. Numerous factors can be implicated, such as central nervous system infiltrates, neurolymphomatosis, complications to medication or allogeneic stem cell transplantation, HAM/TSP, infections, metabolic disturbances. The neurological complications are not always easy to recognize and treat. Thus, this review underlines the necessity of a multidisciplinary approach in ATL patients with neurological symptomatology.

26 May 2024 in Medicina
Verified
Journal Article
Open access
PDF file
IIIuliana Iordan
Iuliana Iordan
AVAna-Maria Vladareanu
Ana-Maria Vladareanu
Cristina D MambetCristina D Mambet
Cristina D Mambet
MOMinodora Onisai
Minodora Onisai
DCDiana Cîșleanu
Diana Cîșleanu
HBHoria Bumbea
Horia Bumbea
Background and Objectives: Adult T-cell leukemia/lymphoma (ATLL) is a highly aggressive T-cell lymphoproliferative disease associated with the human T-cell lymphotropic virus type I (HTLV-1). ATLL is a rare disease, found more frequently in HTLV-1-endemic areas, Romania being one of them. Despite treatment advances, the prognosis remains dismal. We aimed to describe the clinical, biological, and survival outcome features of Romanian patients with aggressive-type ATLL. Materials and Methods: We report the data of a prospective, observational, and unicentric study of all 20 patients diagnosed with lymphoma and acute types of ATLL at our center over the past 12 years. Data were collected from the patients’ medical records. Results: Lymphoma-type ATLL (60%) was more common than acute-type ATLL (40%). Median age at diagnosis was 40.5 years, and most patients were female. Laboratory data revealed significant differences between acute and lymphoma-type ATLL, namely, higher leukocyte (p = 0.02) and lymphocyte counts (p = 0.02) and higher levels of corrected calcium (p = 0.001) in acute-type ATLL. All patients received chemotherapy, and only two underwent allogeneic stem cell transplantation. Only six patients obtained a complete or partial response to chemotherapy, mostly the lymphoma-type ones. The median survival for all patients was 6.37 months, with higher survival in the lymphoma-type ATLL (8.16 months) than in the acute-type (3.60 months). Normal calcium levels (p = 0.011), uric acid (p = 0.005), BUN score (p = 0.000), JCOG-PI moderate risk (p = 0.038), and obtaining complete or partial response (p = 0.037) were associated with higher survival. Conclusion: Aggressive-type ATLL among Romanian patients presents distinct characteristics, including younger age at diagnosis, female predominance, and higher incidence of lymphoma-type ATLL compared to currently reported data. Survival remains very low, with all subtypes experiencing a median survival of less than one year.