130 results on '"Ivanova, Mariia"'
Search Results
2. Standardized pathology report for HER2 testing in compliance with 2023 ASCO/CAP updates and 2023 ESMO consensus statements on HER2-low breast cancer
- Author
-
Ivanova, Mariia, Porta, Francesca Maria, D’Ercole, Marianna, Pescia, Carlo, Sajjadi, Elham, Cursano, Giulia, De Camilli, Elisa, Pala, Oriana, Mazzarol, Giovanni, Venetis, Konstantinos, Guerini-Rocco, Elena, Curigliano, Giuseppe, Viale, Giuseppe, and Fusco, Nicola
- Published
- 2024
- Full Text
- View/download PDF
3. Machine Learning Streamlines the Morphometric Characterization and Multiclass Segmentation of Nuclei in Different Follicular Thyroid Lesions: Everything in a NUTSHELL
- Author
-
L’Imperio, Vincenzo, Coelho, Vasco, Cazzaniga, Giorgio, Papetti, Daniele M., Del Carro, Fabio, Capitoli, Giulia, Marino, Mario, Ceku, Joranda, Fusco, Nicola, Ivanova, Mariia, Gianatti, Andrea, Nobile, Marco S., Galimberti, Stefania, Besozzi, Daniela, and Pagni, Fabio
- Published
- 2024
- Full Text
- View/download PDF
4. Plasma proteomics discovery of mental health risk biomarkers in adolescents
- Author
-
de Sousa Maciel, Izaque, Piironen, Aino-Kaisa, Afonin, Alexey M., Ivanova, Mariia, Alatalo, Arto, Jadhav, Kaustubh Kishor, Julvez, Jordi, Foraster, Maria, van Kamp, Irene, and Kanninen, Katja M.
- Published
- 2023
- Full Text
- View/download PDF
5. A series of octahedral rhenium clusters Re6S4+nBr10-2n (n = 0, 1, 3, 4) and [Re6S4+nBr10-n]n– (n = 1–4): XPS and DFT study
- Author
-
Yarovoy, Spartak S., Asanov, Igor P., Poltarak, Pavel A., Ivanova, Mariia N., Fedorov, Vladimir E., and Naumov, Nikolay G.
- Published
- 2024
- Full Text
- View/download PDF
6. PD-L1 testing in metastatic triple-negative breast cancer: Interobserver and interplatform reproducibility of CE-IVD assays for CPS and IC scores
- Author
-
Ivanova, Mariia, Frascarelli, Chiara, Cerbelli, Bruna, Pignataro, Maria Gemma, Pernazza, Angelina, Venetis, Konstantinos, Sajjadi, Elham, Criscitiello, Carmen, Curigliano, Giuseppe, Guerini-Rocco, Elena, Graziano, Paolo, Martini, Maurizio, d’Amati, Giulia, and Fusco, Nicola
- Published
- 2024
- Full Text
- View/download PDF
7. Upregulation of Integrin beta-3 in astrocytes upon Alzheimer's disease progression in the 5xFAD mouse model
- Author
-
Ivanova, Mariia, Belaya, Irina, Kucháriková, Nina, de Sousa Maciel, Izaque, Saveleva, Liudmila, Alatalo, Arto, Juvonen, Ilona, Thind, Navjot, Andrès, Clarisse, Lampinen, Riikka, Chew, Sweelin, and Kanninen, Katja M.
- Published
- 2024
- Full Text
- View/download PDF
8. Emissions from modern engines induce distinct effects in human olfactory mucosa cells, depending on fuel and aftertreatment
- Author
-
Mussalo, Laura, Avesani, Simone, Shahbaz, Muhammad Ali, Závodná, Táňa, Saveleva, Liudmila, Järvinen, Anssi, Lampinen, Riikka, Belaya, Irina, Krejčík, Zdeněk, Ivanova, Mariia, Hakkarainen, Henri, Kalapudas, Juho, Penttilä, Elina, Löppönen, Heikki, Koivisto, Anne M., Malm, Tarja, Topinka, Jan, Giugno, Rosalba, Aakko-Saksa, Päivi, Chew, Sweelin, Rönkkö, Topi, Jalava, Pasi, and Kanninen, Katja M.
- Published
- 2023
- Full Text
- View/download PDF
9. Clinicopathological features and survival outcomes of luminal-like breast tumors with estrogen receptor loss at metastatic recurrence: A case-control study
- Author
-
Morganti, Stefania, Marra, Antonio, Gandini, Sara, Ascione, Liliana, Ivanova, Mariia, Venetis, Konstantinos, Sajjadi, Elham, Zagami, Paola, Giugliano, Federica, Taurelli Salimbeni, Beatrice, Berton Giachetti, Pier Paolo Maria, Corti, Chiara, De Camilli, Elisa, Curigliano, Giuseppe, Fusco, Nicola, and Criscitiello, Carmen
- Published
- 2023
- Full Text
- View/download PDF
10. Advancing the PD-L1 CPS test in metastatic TNBC: Insights from pathologists and findings from a nationwide survey
- Author
-
Fusco, Nicola, Ivanova, Mariia, Frascarelli, Chiara, Criscitiello, Carmen, Cerbelli, Bruna, Pignataro, Maria Gemma, Pernazza, Angelina, Sajjadi, Elham, Venetis, Konstantinos, Cursano, Giulia, Pagni, Fabio, Di Bella, Camillo, Accardo, Marina, Amato, Michelina, Amico, Paolo, Bartoli, Caterina, Bogina, Giuseppe, Bortesi, Laura, Boldorini, Renzo, Bruno, Sara, Cabibi, Daniela, Caruana, Pietro, Dainese, Emanuele, De Camilli, Elisa, Dell’Anna, Vladimiro, Duda, Loren, Emmanuele, Carmela, Fanelli, Giuseppe Nicolò, Fernandes, Bethania, Ferrara, Gerardo, Gnetti, Letizia, Gurrera, Alessandra, Leone, Giorgia, Lucci, Raffaella, Mancini, Cristina, Marangi, Grazia, Mastropasqua, Mauro G., Nibid, Lorenzo, Orrù, Sandra, Pastena, Maria, Peresi, Monica, Perracchio, Letizia, Santoro, Angela, Vezzosi, Vania, Zambelli, Claudia, Zuccalà, Valeria, Rizzo, Antonio, Costarelli, Leopoldo, Pietribiasi, Francesca, Santinelli, Alfredo, Scatena, Cristian, Curigliano, Giuseppe, Guerini-Rocco, Elena, Martini, Maurizio, Graziano, Paolo, Castellano, Isabella, and d'Amati, Giulia
- Published
- 2023
- Full Text
- View/download PDF
11. Liquid biopsy: Cell-free DNA based analysis in breast cancer
- Author
-
Venetis, Konstantinos, Cursano, Giulia, Pescia, Carlo, D'Ercole, Marianna, Porta, Francesca Maria, Blanco, Marta Cruz, Frascarelli, Chiara, Ivanova, Mariia, Guerini Rocco, Elena, and Fusco, Nicola
- Published
- 2023
- Full Text
- View/download PDF
12. Low-risk triple-negative breast cancers: Clinico-pathological and molecular features
- Author
-
Fusco, Nicola, Sajjadi, Elham, Venetis, Konstantinos, Ivanova, Mariia, Andaloro, Silvia, Guerini-Rocco, Elena, Montagna, Emilia, Caldarella, Pietro, Veronesi, Paolo, Colleoni, Marco, and Viale, Giuseppe
- Published
- 2022
- Full Text
- View/download PDF
13. Evaluation of margins during radical prostatectomy: confocal microscopy vs frozen section analysis.
- Author
-
Musi, Gennaro, Mistretta, Francesco A., Ivanova, Mariia, de Cobelli, Ottavio, Bellin, Andrea, Vago, Gianluca Gaetano, Pravettoni, Gabriella, Pala, Oriana, Lepanto, Daniela, Bottero, Danilo, Piccinelli, Mattia Luca, Tallini, Matteo, Marvaso, Giulia, Ferro, Matteo, Petralia, Giuseppe, Jereczek‐Fossa, Barbara Alicja, Fusco, Nicola, Renne, Giuseppe, and Luzzago, Stefano
- Subjects
RADICAL prostatectomy ,SURGICAL margin ,CONFOCAL microscopy ,FLUORESCENCE microscopy ,PROSTATE cancer - Abstract
Objectives: To test the performance of ex vivo fluorescence confocal microscopy (FCM; Vivascope 2500M‐G4), as compared to intra‐operative frozen section (IFS) analysis, to evaluate surgical margins during robot‐assisted radical prostatectomy (RARP), with final pathology as the reference standard. Methods: Overall, 54 margins in 45 patients treated with RARP were analysed with: (1) ex vivo FCM; (2) IFS analysis; and (3) final pathology. FCM margins were evaluated by two different pathologists (experienced [M.I.: 10 years] vs highly experienced [G.R.: >30 years]) as strongly negative, probably negative, doubtful, probably positive, or strongly positive. First, inter‐observer agreement (Cohen's κ) between pathologists was tested. Second, we reported the sensitivity, specificity, positive predictive (PPV) and negative predictive value (NPV) of ex vivo FCM. Finally, agreement between ex vivo FCM and IFS analysis (Cohen's κ) was reported. For all analyses, four combinations of FCM results were evaluated. Results: At ex vivo FCM, the inter‐observer agreement between pathologists ranged from moderate (κ = 0.74) to almost perfect (κ = 0.90), according to the four categories of results. Indeed, at ex vivo FCM, the highly experienced pathologist reached the best balance between sensitivity (70.5%) specificity (91.8%), PPV (80.0%) and NPV (87.1%). Conversely, on IFS analysis, the sensitivity, specificity, PPV and NPV were, respectively, 88.2% vs 100% vs 100% vs 94.8%. The agreement between the ex vivo FCM and IFS analyses ranged from moderate (κ = 0.62) to strong (κ = 0.86), according to the four categories of results. Conclusion: Evaluation of prostate margins at ex vivo FCM appears to be feasible and reliable. The agreement between readers encourages its widespread use in daily practice. Nevertheless, as of today, the performance of FCM seems to be sub‐par when compared to the established standard of care (IFS analysis). [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
14. Early Coaching to Increase Water Intake in CKD
- Author
-
Ivanova, Mariia D., Gozhenko, Anatoliy I., Crestanello, Tommy, and Ivanov, Dmytro D.
- Published
- 2020
15. Rehabilitation for Functioning and Quality of Life in Patients with Malignant Pleural Mesothelioma: A Scoping Review.
- Author
-
Lippi, Lorenzo, de Sire, Alessandro, Aprile, Vittorio, Calafiore, Dario, Folli, Arianna, Refati, Fjorelo, Balduit, Andrea, Mangogna, Alessandro, Ivanova, Mariia, Venetis, Konstantinos, Fusco, Nicola, and Invernizzi, Marco
- Subjects
PHYSICAL mobility ,PATIENT experience ,EXERCISE tolerance ,MEDICAL rehabilitation ,PATIENTS' attitudes - Abstract
Malignant pleural mesothelioma (MPM) represents a significant clinical challenge due to limited therapeutic options and poor prognosis. Beyond mere survivorship, setting up an effective framework to improve functioning and quality of life is an urgent need in the comprehensive management of MPM patients. Therefore, this study aims to review the current understanding of MPM sequelae and the effectiveness of rehabilitative interventions in the holistic approach to MPM. A narrative review was conducted to summarize MPM sequelae and their impact on functioning, disability, and quality of life, focusing on rehabilitation interventions in MPM management and highlighting gaps in knowledge and areas for further investigation. Our findings showed that MPM patients experience debilitating symptoms, including fatigue, dyspnea, pain, and reduced exercise tolerance, decreasing quality of life. Supportive and rehabilitative interventions, including pulmonary rehabilitation, physical exercise improvement, psychological support, pain management, and nutritional supplementation, seem promising approaches in relieving symptoms and improving quality of life but require further research. These programs emphasize the pivotal synergy among patient-tailored plans, multidisciplinary team involvement, and disease-specific focus. Despite advancements in therapeutic management, MPM remains a challenging disease with limited effective interventions that should be adapted to disease progressions. Rehabilitative strategies are essential to mitigate symptoms and improve the quality of life in MPM patients. Further research is needed to establish evidence-based guidelines for rehabilitative interventions tailored to the unique needs of MPM patients. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
16. Early Breast Cancer Risk Assessment: Integrating Histopathology with Artificial Intelligence.
- Author
-
Ivanova, Mariia, Pescia, Carlo, Trapani, Dario, Venetis, Konstantinos, Frascarelli, Chiara, Mane, Eltjona, Cursano, Giulia, Sajjadi, Elham, Scatena, Cristian, Cerbelli, Bruna, d'Amati, Giulia, Porta, Francesca Maria, Guerini-Rocco, Elena, Criscitiello, Carmen, Curigliano, Giuseppe, and Fusco, Nicola
- Subjects
- *
BREAST tumor risk factors , *RISK assessment , *MEDICAL protocols , *CANCER relapse , *ARTIFICIAL intelligence , *EARLY detection of cancer , *CYTOCHEMISTRY , *TUMOR markers , *DECISION making in clinical medicine , *IMMUNOHISTOCHEMISTRY , *PATIENT-centered care , *DEEP learning , *ARTIFICIAL neural networks , *MACHINE learning , *ONCOLOGISTS , *INDIVIDUALIZED medicine , *MOLECULAR pathology , *HEALTH care teams , *ALGORITHMS , *DISEASE risk factors - Abstract
Simple Summary: Risk assessment in early breast cancer is critical for clinical decisions, but defining risk categories poses a significant challenge. The integration of conventional histopathology and biomarkers with artificial intelligence (AI) techniques, including machine learning and deep learning, has the potential to offer more precise information. AI applications extend beyond detection to histological subtyping, grading, and molecular feature identification. The successful integration of AI into clinical practice requires collaboration between histopathologists, molecular pathologists, computational pathologists, and oncologists to optimize patient outcomes. Effective risk assessment in early breast cancer is essential for informed clinical decision-making, yet consensus on defining risk categories remains challenging. This paper explores evolving approaches in risk stratification, encompassing histopathological, immunohistochemical, and molecular biomarkers alongside cutting-edge artificial intelligence (AI) techniques. Leveraging machine learning, deep learning, and convolutional neural networks, AI is reshaping predictive algorithms for recurrence risk, thereby revolutionizing diagnostic accuracy and treatment planning. Beyond detection, AI applications extend to histological subtyping, grading, lymph node assessment, and molecular feature identification, fostering personalized therapy decisions. With rising cancer rates, it is crucial to implement AI to accelerate breakthroughs in clinical practice, benefiting both patients and healthcare providers. However, it is important to recognize that while AI offers powerful automation and analysis tools, it lacks the nuanced understanding, clinical context, and ethical considerations inherent to human pathologists in patient care. Hence, the successful integration of AI into clinical practice demands collaborative efforts between medical experts and computational pathologists to optimize patient outcomes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
17. Matrix-assisted laser desorption/ionization mass spectrometry imaging to uncover protein alterations associated with the progression of IgA nephropathy
- Author
-
Ivanova, Mariia, Dyadyk, Olena, Ivanov, Dmytro, Clerici, Francesca, Smith, Andrew, and Magni, Fulvio
- Published
- 2020
- Full Text
- View/download PDF
18. Proteomics of liquid biopsies: Depicting RCC infiltration into the renal vein by MS analysis of urine and plasma
- Author
-
Chinello, Clizia, Stella, Martina, Piga, Isabella, Smith, Andrew James, Bovo, Giorgio, Varallo, Marta, Ivanova, Mariia, Denti, Vanna, Grasso, Marco, Grasso, Angelica, Del Puppo, Marina, Zaravinos, Apostolos, and Magni, Fulvio
- Published
- 2019
- Full Text
- View/download PDF
19. Astrocyte remodeling in the beneficial effects of long-term voluntary exercise in Alzheimer’s disease
- Author
-
Belaya, Irina, Ivanova, Mariia, Sorvari, Annika, Ilicic, Marina, Loppi, Sanna, Koivisto, Hennariikka, Varricchio, Alessandra, Tikkanen, Heikki, Walker, Frederick R., Atalay, Mustafa, Malm, Tarja, Grubman, Alexandra, Tanila, Heikki, and Kanninen, Katja M.
- Published
- 2020
- Full Text
- View/download PDF
20. Circulating tumour DNA testing in metastatic breast cancer: Integration with tissue testing.
- Author
-
Ranghiero, Alberto, Frascarelli, Chiara, Cursano, Giulia, Pescia, Carlo, Ivanova, Mariia, Vacirca, Davide, Rappa, Alessandra, Taormina, Sergio Vincenzo, Barberis, Massimo, Fusco, Nicola, Rocco, Elena Guerini, and Venetis, Konstantinos
- Subjects
CIRCULATING tumor DNA ,METASTATIC breast cancer ,TISSUE analysis ,DISEASE progression ,BREAST cancer - Abstract
Breast cancer biomarker profiling predominantly relies on tissue testing (surgical and/or biopsy samples). However, the field of liquid biopsy, particularly the analysis of circulating tumour DNA (ctDNA), has witnessed remarkable progress and continues to evolve rapidly. The incorporation of ctDNA‐based testing into clinical practice is creating new opportunities for patients with metastatic breast cancer (MBC). ctDNA offers advantages over conventional tissue analyses, as it reflects tumour heterogeneity and enables multiple serial biopsies in a minimally invasive manner. Thus, it serves as a valuable complement to standard tumour tissues and, in certain instances, may even present a potential alternative approach. In the context of MBC, ctDNA testing proves highly informative in the detection of disease progression, monitoring treatment response, assessing actionable biomarkers, and identifying mechanisms of resistance. Nevertheless, ctDNA does exhibit inherent limitations, including its generally low abundance, necessitating timely blood samplings and rigorous management of the pre‐analytical phase. The development of highly sensitive assays and robust bioinformatic tools has paved the way for reliable ctDNA analyses. The time has now come to establish how ctDNA and tissue analyses can be effectively integrated into the diagnostic workflow of MBC to provide patients with the most comprehensive and accurate profiling. In this manuscript, we comprehensively analyse the current methodologies employed in ctDNA analysis and explore the potential benefits arising from the integration of tissue and ctDNA testing for patients diagnosed with MBC. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
21. Immune microenvironment dynamics in breast cancer during pregnancy: impact of gestational age on tumor-infiltrating lymphocytes and prognosis.
- Author
-
Sajjadi, Elham, Venetis, Konstantinos, Ivanova, Mariia, Noale, Marianna, Blundo, Concetta, Di Loreto, Eugenia, Scarfone, Giovanna, Ferrero, Stefano, Maggi, Stefania, Veronesi, Paolo, Galimberti, Viviana E., Viale, Giuseppe, Peccatori, Fedro A., Fusco, Nicola, and Guerini-Rocco, Elena
- Subjects
GESTATIONAL age ,TUMOR-infiltrating immune cells ,BREAST cancer ,CANCER diagnosis ,HORMONE receptors ,CANCER relapse - Abstract
Background: Breast cancer during pregnancy (PrBC) is a rare condition known for its aggressive clinical behavior. The presence of tumor-infiltrating lymphocytes (TILs) has been shown to have a significant impact on the prognosis of these patients. Despite some biological characteristics of the tumor that may differ depending on the gestational age, little is known about the dynamics of the immune landscape within the tumor microenvironment (TME) in PrBC. Therefore, in this study, our objective was to gain comprehensive insights into the relationship between gestational age at breast cancer diagnosis and the composition of the TME. Methods: n = 108 PrBC were selected from our institutional registry and categorized based on the gestational age by trimester. For all cases, TILs were profiled according to the International TILs Working Group recommendations, and subtyped by CD4, CD8, and forkhead box P3 (FOXP3) immunohistochemistry. PD-L1 was tested according to the combined positive score (CPS) using the IHC 22C3 pharmDx assay, with a cutoff value of ≥10 for positivity. The statistical approach encompassed Fisher’s and Chi-squared tests, with appropriate adjustments for multiple comparisons, logistic regression models, and survival analyses based on the Kaplan–Meier method. Results: The proportion of patients with poorly differentiated (G3) neoplasms increased as the gestational age advanced (first trimester, n = 25, 56.8%; second trimester, n = 27, 69.2%; third trimester, n = 21, 87.5%; p = 0.03). The histologic subtypes as well as the hormone receptor (HR) and HER2 status did not show significant changes across different pregnancy trimesters. In the HR+/HER2– subtype, there was a higher proportion of tumors with high/moderate TILs in the early phases of pregnancy, similar to FOXP3 expression (TILs: first trimester, n = 10, 35.7%; second trimester, n = 2, 10.5%; third trimester, n = 0; p = 0.02; FOXP3: first trimester, n = 10, 40%; second trimester, n = 3, 15.8%; third trimester, n = 0; p = 0.03). The median follow-up for our cohort was 81 months. Patients who relapsed after a breast cancer diagnosis during the first trimester were more frequently PD-L1-negative, unlike those with no disease recurrence (n = 9, 100% vs. n = 9, 56.3%; p = 0.03; hormone therapy and n = 9, 100% vs. n = 7, 53.9%; p = 0.02; chemotherapy). No statistically significant differences were seen among the three trimesters in terms of survival outcome. Conclusion: The TME dynamics of HR+/HER2− PrBC vary based on gestational age, suggesting that immune tolerance expression during later gestational age could explain the increased aggressiveness of tumors diagnosed at that stage. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
22. Systematic Study of Vibrational Spectra of Octahedral Rhenium Clusters {Re 6 S 8-x Br x }Br y (x = 0, 1, 2, 3, 4) with Mixed Sulfur/Bromine Inner Ligands.
- Author
-
Ledneva, Alexandra Yu., Ivanova, Mariia N., Poltarak, Pavel A., Yarovoy, Spartak S., Kolesov, Boris A., Fedorov, Vladimir E., and Naumov, Nikolay G.
- Subjects
- *
VIBRATIONAL spectra , *RHENIUM , *BROMINE , *MOLECULAR structure , *RHENIUM compounds , *FREQUENCIES of oscillating systems - Abstract
A series of rhenium compounds with the octahedral cluster core {Re6S8-xBrx} (x = 0–4): with molecular and polymeric structure were obtained. In these compounds the cluster core composition varies monotonically, the geometry of the cluster and the rhenium coordination polyhedron are retained unchanged, while the symmetry of the cluster changes. The vibrational spectra (Raman and IR) were recorded and analyzed for compounds with all possible S/Br ratios in the cluster core. The group vibrations of clusters were attributed with the use of DFT calculations of vibrational spectra. It is shown that the set of main characteristic bands is retained in both ionic and polymeric compounds regardless of the composition and the symmetry of the cluster core while the observed vibration frequencies of these bands depend on the S/Br ratio in the cluster core. In particular, the group Re–S stretching vibrations (A1g(S8) and T2g(S8) modes) shifted to higher frequencies with the increase in the number of Br atoms in the cluster. The difference in the connectivity in polymeric compounds leads to an increase in the number of bands in the spectra and to the disappearance of the A1g(Br) modes. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
23. Computational pathology to improve biomarker testing in breast cancer: how close are we?
- Author
-
Sajjadi, Elham, Frascarelli, Chiara, Venetis, Konstantinos, Bonizzi, Giuseppina, Ivanova, Mariia, Vago, Gianluca, Guerini-Rocco, Elena, and Fusco, Nicola
- Published
- 2023
- Full Text
- View/download PDF
24. Immune Biomarkers in Triple-Negative Breast Cancer: Improving the Predictivity of Current Testing Methods.
- Author
-
Porta, Francesca Maria, Sajjadi, Elham, Venetis, Konstantinos, Frascarelli, Chiara, Cursano, Giulia, Guerini-Rocco, Elena, Fusco, Nicola, and Ivanova, Mariia
- Subjects
TRIPLE-negative breast cancer ,HARBOR maintenance & repair ,TEST methods ,BIOMARKERS ,PROGNOSIS - Abstract
Triple-negative breast cancer (TNBC) poses a significant challenge in terms of prognosis and disease recurrence. The limited treatment options and the development of resistance to chemotherapy make it particularly difficult to manage these patients. However, recent research has been shifting its focus towards biomarker-based approaches for TNBC, with a particular emphasis on the tumor immune landscape. Immune biomarkers in TNBC are now a subject of great interest due to the presence of tumor-infiltrating lymphocytes (TILs) in these tumors. This characteristic often coincides with the presence of PD-L1 expression on both neoplastic cells and immune cells within the tumor microenvironment. Furthermore, a subset of TNBC harbor mismatch repair deficient (dMMR) TNBC, which is frequently accompanied by microsatellite instability (MSI). All of these immune biomarkers hold actionable potential for guiding patient selection in immunotherapy. To fully capitalize on these opportunities, the identification of additional or complementary biomarkers and the implementation of highly customized testing strategies are of paramount importance in TNBC. In this regard, this article aims to provide an overview of the current state of the art in immune-related biomarkers for TNBC. Specifically, it focuses on the various testing methodologies available and sheds light on the immediate future perspectives for patient selection. By delving into the advancements made in understanding the immune landscape of TNBC, this study aims to contribute to the growing body of knowledge in the field. The ultimate goal is to pave the way for the development of more personalized testing strategies, ultimately improving outcomes for TNBC patients. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
25. Breast Cancer with Brain Metastasis: Molecular Insights and Clinical Management.
- Author
-
Ivanova, Mariia, Porta, Francesca Maria, Giugliano, Federica, Frascarelli, Chiara, Sajjadi, Elham, Venetis, Konstantinos, Cursano, Giulia, Mazzarol, Giovanni, Guerini-Rocco, Elena, Curigliano, Giuseppe, Criscitiello, Carmen, and Fusco, Nicola
- Subjects
- *
METASTATIC breast cancer , *BREAST , *BRAIN metastasis , *COLONIZATION (Ecology) , *BLOOD-brain barrier , *BREAST cancer - Abstract
Breast cancer is the most frequently diagnosed malignancy worldwide and the leading cause of cancer-related death among women. Brain metastases are a primary contributor to mortality, as they often go undetected until late stages due to their dormant nature. Moreover, the clinical management of brain metastases is complicated by the relevant issue of blood-brain barrier penetration. The molecular pathways involved in the formation, progression, and colonization of primary breast tumors and subsequent brain metastases are diverse, posing significant hurdles due to the heterogeneous nature of breast cancer subtypes. Despite advancements in primary breast cancer treatments, the prognosis for patients with brain metastases remains poor. In this review, we aim to highlight the biological mechanisms of breast cancer brain metastases by evaluating multi-step genetic pathways and to discuss currently available and emerging treatment strategies to propose a prospective overview of the management of this complex disease. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
26. Characterization of the immune environment in pregnancy-associated breast cancer.
- Author
-
Venetis, Konstantinos, Sajjadi, Elham, Ivanova, Mariia, Peccatori, Fedro Alessandro, Fusco, Nicola, and Guerini-Rocco, Elena
- Abstract
Pregnancy-associated breast cancer (PrBC) is a rare and clinically challenging condition. Specific immune mechanisms and pathways are involved in maternal–fetal tolerance and tumor-host immunoediting. The comprehension of the molecular processes underpinning this immune synergy in PrBC is needed to improve patients' clinical management. Only a few studies focused on the immune biology of PrBC and attempted to identify bona fide biomarkers. Therefore, clinically actionable information remains extremely puzzling for these patients. In this review article, we discuss the current knowledge on the immune environment of PrBC, in comparison with pregnancy-unrelated breast cancer and in the context of maternal immune changes during pregnancy. A particular emphasis is given to the actual role of potential immune-related biomarkers for PrBC clinical management. Pregnancy-associated breast cancer (PrBC) affects about 4% of women with breast cancer who are of childbearing age. Managing these tumors is difficult due to interactions between the mother, fetus and tumor. These interactions cause changes in the immune system of patients with PrBC. Understanding how the immune system responds to PrBC may lead to better ways of managing the disease. This review focuses on the current knowledge of the immune system in PrBC, including which components can be used as biomarkers to improve clinical management. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
27. The molecular landscape of breast mucoepidermoid carcinoma.
- Author
-
Venetis, Konstantinos, Sajjadi, Elham, Ivanova, Mariia, Andaloro, Silvia, Pessina, Simona, Zanetti, Chiara, Ranghiero, Alberto, Citelli, Gabriele, Rossi, Chiara, Lucioni, Marco, Malapelle, Umberto, Pagni, Fabio, Barberis, Massimo, Guerini‐Rocco, Elena, Viale, Giuseppe, and Fusco, Nicola
- Subjects
MUCOEPIDERMOID carcinoma ,PROGRAMMED death-ligand 1 ,TRIPLE-negative breast cancer ,CELL cycle regulation ,FLUORESCENCE in situ hybridization - Abstract
Mucoepidermoid carcinoma (MEC) of the breast is an extremely rare salivary gland‐type tumor characterized by epidermoid, basaloid, intermediate, and/or mucinous cells arranged in solid and cystic patterns. Despite their triple‐negative phenotype, breast MECs are generally considered low‐risk malignancies but their biology is largely unexplored; therefore, guidelines for clinical management are lacking. Here, we sought to characterize the molecular landscape of breast MECs. Thirteen cases were histologically reviewed, characterized for tumor‐infiltrating lymphocytes (TILs), and were subjected to immunohistochemistry for programmed death‐ligand 1 (PD‐L1, clone 22C3), EGFR, and amphiregulin (AREG). Rearrangements in MAML2 and EWSR1 were investigated by fluorescent in situ hybridization. Targeted next‐generation sequencing of 161 genes was performed on eight cases. Most MECs had low histological grade (n = 10, 77%), with the presence of TILs (n = 9/12; 75%) and PD‐L1 combined positive score ranging from 10 to 20 (n = 4/6; 67%). All cases showed EGFR and AREG overexpression and were fusion negative. Enrichment of genetic alterations was observed in PI3K/AKT/mTOR and cell cycle regulation pathways, while only one case harbored TP53 mutations. This is the first study providing extensive molecular data on breast MECs and the largest collection of cases available to date in the literature. Breast MECs lack TP53 mutations found in high‐grade forms of triple‐negative breast cancers and MAML2 or EWSR1 rearrangements pathognomonic of salivary MECs. Triple‐negativity and PD‐L1 positivity suggest a window of opportunity for immunotherapy in these patients. The EGFR/AREG axis activation, coupled with the mutational patterns in PI3K/AKT/mTOR and cell cycle pathways warrants caution in considering MECs as low‐risk neoplasms. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
28. The dynamics of hypertension and renal function in CKD and non-CKD patients affected with COVID-19 - final results of BIRCOV trial.
- Author
-
Ivanov, Dmytro, Gozhenko, Antolii, Ivanova, Mariia, Zavalna, Iryna, and Crestanello, Tommy
- Subjects
KIDNEY function tests ,HYPERTENSION ,RENIN-angiotensin system ,BLOOD pressure measurement ,COVID-19 - Abstract
Introduction and aim. There is evidence in the literature about a change in the effectiveness of inhibitors of the renin-angiotensin system (iRAS) in people with COVID-19. Considering different mechanisms of pressure reduction by different iRAS groups, one can expect differences in people with COVID-19 receiving these drugs. The aim of angiotensin-converting enzyme inhibitors (ACEi), angiotensin II receptor blockers (ARB) and direct renin inhibitors (DRi) usage in COVID-19 (BIRCOV study) was to pinpoint clinical and laboratory differences in people with hypertension who received iRAS and suffered coronavirus infection. Material and methods. An open prospective trial of 108 patients was performed in subjects suffering from COVID-19 who have been receiving iRAS: ACEi, ARB or DRi as basic antihypertensive therapy. The disease follow-up was 12 and 24 weeks. A blood pressure (BP) measurement was performed the week before COVID-19 and up to 24 weeks from the disease onset. Subanalysis in patients with chronic kidney disease (CKD) was performed. Results. In patients with COVID-19, a change in the effectiveness of antihypertensive therapy depending on the type of drug in the iRAS group has been documented in the first 4 weeks from the onset of the disease. The use of ACEi had significantly increased the risk of severe hypotension, unlike ARBs that do not cause hypotension. The synchronous decline of estimated glomerular filtration rate (eGFR) and systolic BP was more pronounced in CKD patients followed by albuminuria incidence. The greatest decrease in eGFR was in people taking ACEi. Conclusion. People with grade 1-2 hypertension who are constantly receiving RAS inhibitors suffering from COVID-19 may develop hypotension with ACEi. COVID-19 leads to transient albuminuria and decreased glomerular filtration rate, which is especially dangerous for people with CKD 4-5. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
29. Unlocking the Resistance to Anti-HER2 Treatments in Breast Cancer: The Issue of HER2 Spatial Distribution.
- Author
-
Giugliano, Federica, Carnevale Schianca, Ambra, Corti, Chiara, Ivanova, Mariia, Bianco, Nadia, Dellapasqua, Silvia, Criscitiello, Carmen, Fusco, Nicola, Curigliano, Giuseppe, and Munzone, Elisabetta
- Subjects
ONCOGENES ,GENE expression ,BREAST tumors - Abstract
Simple Summary: Breast cancer is the most common cancer in women. Approximately 15% of breast cancers harbour an amplification of the ERBB2 gene and/or an overexpression of the HER2 protein and are thus classified as HER2-positive. However, HER2 protein expression could be heterogeneous, showing different patterns of spatial distribution. This feature, also called "spatial heterogeneity" may potentially affect treatment, response, and assessment of HER2 status, ultimately impacting the best treatment strategy. The activity of some new pharmacological agents, belonging to the group of antibody–drug conjugates, may represent an opportunity for overcoming this issue. In this review, we summarize the available evidence on HER2 heterogeneity and spatial distribution and how they may affect current available treatment choices. Approximately 15% of breast cancers are classified as HER2-positive, with an amplification of the ERBB2 gene and/or an overexpression of the HER2 protein. Up to 30% of HER2-positive breast cancers shows heterogeneity in HER2 expression and different patterns of spatial distribution, i.e., the variability in the distribution and expression of the HER2 protein within a single tumour. Spatial heterogeneity may potentially affect treatment, response, assessment of HER2 status and consequently, may impact on the best treatment strategy. Understanding this feature can help clinicians to predict response to HER2-targeted therapies and patient outcomes, and to fine tune treatment decisions. This review summarizes the available evidence on HER2 heterogeneity and spatial distribution and how this may affect current available treatment choices, exploring possible opportunities for overcoming this issue, such as novel pharmacological agents, belonging to the group of antibody–drug conjugates. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
30. WCN24-544 NEPHROLOGY CARE MANAGEMENT IN THE UKRAINIAN WAR: 2 YEARS EXPERIENCE
- Author
-
Ivanov, Dmytro D., Vanholder, Raymond, Lagodich, Elizaveta, Levtchenko, Elena, Pawlowicz-Szlarska, Ewa, Sever, Mehmet S., Shevchuk, Dmytro, Smarinsky, Ruth, Shroff, Rukshana, Tuğlular, Serhan, Voroniak, Olexiy, Zavalna, Iryna, Zograbian, Ruben, Weber, Lutz T., Wiecek, Andrzej, and Ivanova, Mariia
- Published
- 2024
- Full Text
- View/download PDF
31. A Phase 3 Prospective Randomized Trial to Evaluate the Impact of Augmented Reality During Robot-assisted Radical Prostatectomy on the Rates of Postoperative Surgical Margins: A Clinical Trial Protocol
- Author
-
Musi, Gennaro, Mistretta, Francesco A., de Cobelli, Ottavio, Bellin, Andrea, Vago, Gianluca Gaetano, Pravettoni, Gabriella, Bottero, Danilo, Piccinelli, Mattia Luca, Ferro, Matteo, Ivanova, Mariia, Petralia, Giuseppe, Marvaso, Giulia, Jereczek-Fossa, Barbara A., Bagnardi, Vincenzo, Renne, Giuseppe, Fusco, Nicola, and Luzzago, Stefano
- Published
- 2024
- Full Text
- View/download PDF
32. Unusual Square Pyramidal Chalcogenide Mo 5 Cluster with Bridging Pyrazolate-Ligands.
- Author
-
Savina, Iulia V., Ivanov, Anton A., Evtushok, Darya V., Gayfulin, Yakov M., Komarovskikh, Andrey Y., Syrokvashin, Mikhail M., Ivanova, Mariia N., Asanov, Igor P., Eltsov, Ilia V., Kuratieva, Natalia V., Mironov, Yuri V., and Shestopalov, Michael A.
- Subjects
CHALCOGENIDES ,CYCLIC voltammetry ,SOLID solutions ,MOLYBDENUM ,MAGNETIC properties - Abstract
The family of chalcogenide molybdenum clusters is well presented in the literature by a series of compounds of nuclearity ranging from binuclear to multinuclear articulating octahedral fragments. Clusters actively studied in the last decades were shown to be promising as components of superconducting, magnetic, and catalytic systems. Here, we report the synthesis and detailed characterization of new and unusual representatives of chalcogenide clusters: square pyramidal complexes [{Mo
5 (μ3 -Se)i 4 (μ4 -Se)i (μ-pz)i 4 }(pzH)t 5 ]1+/2+ (pzH = pyrazole, i = inner, t = terminal). Individually obtained oxidized (2+) and reduced (1+) forms have very close geometry (proven by single-crystal X-ray diffraction analysis) and are able to reversibly transform into each other, which was confirmed by cyclic voltammetry. Comprehensive characterization of the complexes, both in solid and in solution, confirms the different charge state of molybdenum in clusters (XPS), magnetic properties (EPR), and so on. DFT calculations complement the diverse study of new complexes, expanding the chemistry of molybdenum chalcogenide clusters. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
33. Malignancies in Patients with Celiac Disease: Diagnostic Challenges and Molecular Advances.
- Author
-
Ivanova, Mariia, Bottiglieri, Luca, Sajjadi, Elham, Venetis, Konstantinos, and Fusco, Nicola
- Subjects
- *
CELIAC disease , *GLIADINS , *INTESTINAL diseases , *GLUTEN , *INTESTINAL cancer , *GUT microbiome , *OROPHARYNGEAL cancer - Abstract
Celiac disease (CD) is a multiorgan autoimmune disorder of the chronic intestinal disease group characterized by duodenal inflammation in genetically predisposed individuals, precipitated by gluten ingestion. The pathogenesis of celiac disease is now widely studied, overcoming the limits of the purely autoimmune concept and explaining its hereditability. The genomic profiling of this condition has led to the discovery of numerous genes involved in interleukin signaling and immune-related pathways. The spectrum of disease manifestations is not limited to the gastrointestinal tract, and a significant number of studies have considered the possible association between CD and neoplasms. Patients with CD are found to be at increased risk of developing malignancies, with a particular predisposition of certain types of intestinal cancer, lymphomas, and oropharyngeal cancers. This can be partially explained by common cancer hallmarks present in these patients. The study of gut microbiota, microRNAs, and DNA methylation is evolving to find the any possible missing links between CD and cancer incidence in these patients. However, the literature is extremely mixed and, therefore, our understanding of the biological interplay between CD and cancer remains limited, with significant implications in terms of clinical management and screening protocols. In this review article, we seek to provide a comprehensive overview of the genomics, epigenomics, and transcriptomics data on CD and its relation to the most frequent types of neoplasms that may occur in these patients. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
34. Spatially Resolved Molecular Approaches for the Characterisation of Non-Invasive Follicular Tumours with Papillary-like Features (NIFTPs).
- Author
-
Piga, Isabella, L'Imperio, Vincenzo, Principi, Lucrezia, Bellevicine, Claudio, Fusco, Nicola, Maffini, Fausto, Venetis, Konstantinos, Ivanova, Mariia, Seminati, Davide, Casati, Gabriele, Pagani, Lisa, Galimberti, Stefania, Capitoli, Giulia, Garancini, Mattia, Gatti, Andrea-Valer, Magni, Fulvio, and Pagni, Fabio
- Subjects
PEPTIDYLPROLYL isomerase ,PROTEOMICS ,TUMORS ,CARCINOGENESIS ,BRAF genes ,THYROID gland - Abstract
Noninvasive follicular thyroid neoplasms with papillary-like nuclear features (NIFTP) are low-risk thyroid lesions most often characterised by RAS-type mutations. The histological diagnosis may be challenging, and even immunohistochemistry and molecular approaches have not yet provided conclusive solutions. This study characterises a set of NIFTPs by Matrix-Assisted Laser Desorption/Ionisation (MALDI)–Mass Spectrometry Imaging (MSI) to highlight the proteomic signatures capable of overcoming histological challenges. Archived formalin-fixed paraffin-embedded samples from 10 NIFTPs (n = 6 RAS-mutated and n = 4 RAS-wild type) were trypsin-digested and analysed by MALDI–MSI, comparing their profiles to normal tissue and synchronous benign nodules. This allowed the definition of a four-peptide signature able to distinguish RAS-mutant from wild-type cases, the latter showing proteomic similarities to hyperplastic nodules. Moreover, among the differentially expressed signals, Peptidylprolyl Isomerase A (PPIA, 1505.8 m/z), which has already demonstrated a role in the development of cancer, was found overexpressed in NIFTP RAS-mutated nodules compared to wild-type lesions. These results underlined that high-throughput proteomic approaches may add a further level of biological comprehension for NIFTPs. In the future, thanks to the powerful single-cell detail achieved by new instruments, the complementary NGS–MALDI imaging sequence might be the correct methodological approach to confirm that the current NIFTP definition encompasses heterogeneous lesions that must be further characterised. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
35. Replenishment in the Family of Rhenium Chalcobromides; Synthesis and Structure of Molecular {Re4S4}Br8(TeBr2)4, Dimeric...
- Author
-
Yarovoy, Spartak S., Ivanova, Mariia, Sukhikh, Taisiya S., Ryzhikov, Maxim R., Fedorov, Vladimir E., and Naumov, Nikolay G.
- Published
- 2022
- Full Text
- View/download PDF
36. Примусова гідратація при ХХН стадій 1–5: огляд і детальний аналіз трьох клінічних досліджень
- Author
-
Ivanova, Mariia D., Gozhenko, Anatoliy I., Crestanello, Tommy, and Ivanov, Dmytro D.
- Subjects
раннє тренування для збільшення споживання води (примусова гідратація) при ХХН, розрахункова швидкість клубочкової фільтрації, функціональний нирковий резерв ,ранняя тренировка по увеличению потребления воды (принудительная гидратация) при ХБП, расчетная скорость клубочковой фильтрации, функциональный резерв почек ,early coaching to increase water intake in CKD, eGFR, renal functional reserve ,urologic and male genital diseases ,female genital diseases and pregnancy complications - Abstract
Parallel two-group prospective multicentre randomized trial named “HYD45 — Hydration in CKD 4–5 stages” that enrolled 62 patients with CKD G4–5 was aimed at evaluating of estimated glomerular filtration rate (eGFR) with coaching to increase water intake (CIWI) with the achievement of minimally higher diuresis by 400 mL in 31 patients compared with the CKD G4–5 group without CIWI. The stated duration was 12 months, and the trial was terminated in 6 months due to a more pronounced eGFR drop in the CIWI group, namely –3.3 ml vs. 2 ml in the group without CIWI. eGFR, renal functional reserve (RFR), albumin-to-creatinine ratio, and patient’s quality of life were additionally analyzed in this trial. Finally, three randomized clinical trials were analyzed in which patients with CKD 1–2, 3, and 4–5 received hydration. The results of studies demonstrate the possible efficacy of CIWI in stage 1–2 CKD in patients with normal or increased renal functional reserve. In stage 3 CKD, CIWI showed no benefits, and in stage CKD 4–5, forced hydration resulted in greater renal function loss. Summarizing these data, the authors concluded that it is probably appropriate for healthy people to consume the amount of fluid that provides physiological diuresis of 1.2–1.8 L and urine normal osmolarity. CIWI is often excessive, forced excessive hydration may not promote a healthy lifestyle. CIWI becomes forced excess hydration as kidney function decreases. Possibly, the benefits of CIWI are lost in CKD with the progression of renal function reduction. The effect of CIWI for 12 months may be positive for stage 1 CKD and stage 2 CKD with normal functional renal reserve. CIWI is probably impractical for chronic stages 3–5 CKD. In CKD 4–5, RFR is not preserved, which probably explains the negative effect of CIWI. With CKD G1, the CIWI leads to the optimal preservation of the renal function with the increase of GFR per 1 ml/min/1.73 m2 per year in comparison with the same water intake. In CKD G2, CIWI prevents physiological and pathological loss of renal function, RFR above 50 % provides restoration of eGFR in CKD G1–2. Early Coaching to Increase Water Intake in CKD (ECIWIC) trial demonstrates benefits of CIWI in patients with CKD G1–2 and preserved RFR and may be recommended to delay the CKD worsening., Параллельное в 2 группах проспективное многоцентровое рандомизированное исследование под названием «HYD45 — Гидратация при ХБП 4–5-й стадий», выполненное у 62 пациентов с ХБП G4–5, было направлено на оценку рСКФ при проведении принудительной гидратации (CIWI) с достижением более высокого диуреза минимально на 400 мл у 31 пациента по сравнению с группой из 31 пациента с ХБП G4–5 без CIWI. Заявленная продолжительность исследования составляла 12 месяцев, исследование было прекращено через 6 месяцев из-за более выраженного падения рСКФ в группе CIWI, а именно: –3,3 мл по сравнению с 2 мл в группе без CIWI. В этом исследовании дополнительно анализировались рСКФ, почечный функциональный резерв (ФПР), соотношение альбумина и креатинина и качество жизни пациента. Кроме того, были проанализированы три рандомизированных клинических исследования, в которых пациенты с ХБП стадий 1–2, 3 и 4–5 получали гидратацию. Результаты исследований указывают на возможную эффективность CIWI при 1–2-й стадии ХБП, которая встречается у пациентов с нормальным или повышенным функциональным резервом почек. На стадии 3 ХБП CIWI не показала положительных результатов, а на стадии 4–5 ХБП принудительная гидратация приводила к большей потере функции почек. Обобщая эти данные, авторы пришли к выводу, что здоровым людям, вероятно, целесообразно потреблять такое количество жидкости, которое обеспечивает физиологический диурез 1,2–1,8 л и нормоосмолярность мочи. CIWI часто бывает чрезмерной, принуждение к чрезмерной гидратации может не способствовать здоровому образу жизни. CIWI превращается в принудительную избыточную гидратацию по мере снижения функции почек. Возможно, преимущества CIWI теряются при ХБП с прогрессированием потери почечной функции. Положительный эффект CIWI в течение 12 месяцев может быть положительным при ХБП 1-й и 2-й стадии с нормальным функциональным резервом почек. CIWI, вероятно, нецелесообразна для хронических стадий 3–5. При ХБП 4–5 ФПР не сохраняется, что, вероятно, объясняет негативный эффект CIWI. При ХБП G1 CIWI приводит к сохранению функции почек с увеличением СКФ на 1 мл/мин/м2/год по сравнению с тем же потреблением воды. При ХБП G2 CIWI предотвращает физиологическую и патологическую потерю функции почек, ФПР выше 50 % способствует восстановлению рСКФ при ХБП G1-2. Исследование ECIWIC демонстрирует преимущества CIWI у пациентов с ХБП G1–2 и сохраненным ФПР и может быть рекомендовано для торможения прогрессирования ХБП., Метою паралельного двогрупового проспективного багатоцентрового рандомізованого дослідження під назвою «HYD45 — Гідратація при 4–5-й стадіях ХХН», проведеного в 62 пацієнтів із ХХН G4–5, була оцінка розрахункової швидкості клубочкової фільтрації (рШКФ) із тренуванням для збільшення споживання води (CIWI) з досягненням мінімально вищого діурезу на 400 мл у 31 пацієнта порівняно з групою ХХН G4–5 без CIWI. Зазначена тривалість становила 12 місяців, але дослідження було припинене через 6 місяців через більш виражене зниження рШКФ у групі CIWI, а саме: –3,3 мл проти 2 мл у групі без CIWI. РШКФ, функціональний резерв нирок (ФНР), співвідношення альбуміну й креатиніну та якість життя пацієнта додатково проаналізовані в цьому дослідженні. Також було проаналізовано три рандомізованих клінічних дослідження, у яких пацієнти з хронічною хворобою нирок стадій 1–2, 3 та 4–5 отримували гідратацію. Результати досліджень вказують на можливу ефективність примусової гідратації на 1–2-й стадії ХХН, що спостерігається в пацієнтів із нормальним або підвищеним функціональним резервом нирок. На стадії 3 ХХН примусова гідратація не показала переваг, а на стадії 4–5 призвела до більшої втрати функції нирок. Узагальнюючи ці дані, автори дійшли висновку, що здоровим людям доцільно споживати кількість рідини, яка забезпечує фізіологічний діурез 1,2–1,8 л та нормоосмолярність сечі. CIWI часто виявляється надмірною, примусова надмірна гідратація може не сприяти здоровому способу життя. CIWI стає вимушеною надмірною гідратацією, оскільки функція нирок знижується. Можливо, переваги CIWI втрачаються при ХХН із прогресуванням втрати функції нирок. Вплив на рШКФ протягом 12 місяців може бути позитивним для ХХН стадії 1 та ХХН стадії 2 з нормальним функціональним нирковим резервом. CIWI, мабуть, недоцільна для хронічних, 3–5-ї, стадій. При ХХН стадії 4–5 ФНР втрачається, що, ймовірно, пояснює негативний вплив на рШКФ. При ХХН G1 CIWI призводить до оптимального збереження функції нирок зі збільшенням показника рШКФ на 1 мл/хв/1,73 м2 на рік порівняно з тим самим споживанням води. При ХХН G2 CIWI запобігає фізіологічній та патологічній втраті функції нирок, ФНР понад 50 % сприяє відновленню рШКФ при ХХН G1–2. Випробування ECIWIC демонструє переваги CIWI в пацієнтів із ХХН G1–2 зі збереженим ФНР, яке може бути рекомендоване для гальмування прогресування ХХН.
- Published
- 2021
37. Analytical Performance of Next-Generation Sequencing and RT-PCR on Formalin-Fixed Paraffin-Embedded Tumor Tissues for PIK3CA Testing in HR+/HER2− Breast Cancer.
- Author
-
Venetis, Konstantinos, Pepe, Francesco, Munzone, Elisabetta, Sajjadi, Elham, Russo, Gianluca, Pisapia, Pasquale, Ivanova, Mariia, Bonizzi, Giuseppina, Vacirca, Davide, Rappa, Alessandra, Ranghiero, Alberto, Taormina, Sergio Vincenzo, Viale, Giuseppe, Troncone, Giancarlo, Barberis, Massimo, Guerini-Rocco, Elena, Malapelle, Umberto, and Fusco, Nicola
- Subjects
NUCLEOTIDE sequencing ,REVERSE transcriptase polymerase chain reaction ,BREAST cancer ,SOMATIC mutation ,HORMONE receptors ,BREAST - Abstract
Somatic mutations in PIK3CA are present in ~40% breast cancers (BC); their detection in hormone receptor (HR)+/HER2− tumors allows for selecting patients with advanced disease eligible for PIK3CA targeting with alpelisib. The choice of what type of PIK3CA testing approach to adopt and which tissue sample to analyze is a new task in breast pathology. In this methodological study, we sought to assess the performance of next-generation sequencing (NGS) and RT-PCR for PIK3CA testing on archival formalin-fixed paraffin-embedded (FFPE) primary tumors and corresponding metastases. Sixteen HR+/HER2− BC with known PIK3CA-mutated status (ex. 7, 9, and 20) on metastatic samples by means of amplicon-based targeted NGS were selected, and n = 13 of these samples were re-tested with a commercially available CE-IVD RT-PCR assay. All available primary tumors (n = 8) were tested with both methods. NGS detected mutations in all samples, while RT-PCR in n = 2 sample-pairs and overall, in n = 5/8 (62.5%) primary tumors and 7/13 (53.8%) metastases (κ = 0.09; 95% CI, −0.69–0.87). Slight agreement (κ = 0; 95% CI, −0.59–0.59) was observed between NGS and RT-PCR, with the former being generally more sensitive in cases with low DNA quality and quantity. Post hoc visual inspection of the RT-PCR data increased the concordance to 76.9%. Targeted NGS offers reliable and robust PIK3CA testing on both tumor and metastasis FFPE samples; the accuracy of RT-PCR depends on the DNA quantity and quality. In HR+/HER2− BC, both the selection of the PIK3CA testing strategy of FFPE tissues and which sample to analyze should consider several technical parameters and should be tailored for each case. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
38. HER2 in Metastatic Colorectal Cancer: Pathology, Somatic Alterations, and Perspectives for Novel Therapeutic Schemes.
- Author
-
Ivanova, Mariia, Venetis, Konstantinos, Guerini-Rocco, Elena, Bottiglieri, Luca, Mastropasqua, Mauro Giuseppe, Garrone, Ornella, Fusco, Nicola, and Ghidini, Michele
- Abstract
Simple Summary: In the current clinical practice, HER2 status is tested in breast and gastroesophageal cancers to select patients eligible for anti-HER2 treatment. However, HER2 is an emerging biomarker in colorectal cancer (CRC), one of the big killers in oncology. The most frequent types of HER2 alterations in CRC include gene amplification and mutations and often involve protein overexpression. In this review, we discuss the current knowledge of HER2 testing in CRC and the immediate future perspectives for HER2 targeting in the metastatic setting. HER2 is an emerging biomarker in colorectal cancer (CRC). This oncogene plays an essential role in regulating cell proliferation, differentiation, migration, and, more in general, tumorigenesis and tumor progression. The most frequent types of HER2 alterations in CRC include gene amplification and missense mutations in 7–8% of CRC, often being mirrored by HER2 protein overexpression, representing founder events in solid tumors, including CRC. There are currently no approved HER2-targeted therapy guidelines for CRC; however, several studies have shown that HER2 can be effectively targeted in meta-static CRC settings. In this review, we discuss the current knowledge of HER2 testing in CRC and the immediate future perspectives for HER2 targeting in the metastatic setting. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
39. Axillary Web Syndrome in Breast Cancer Women: What Is the Optimal Rehabilitation Strategy after Surgery? A Systematic Review.
- Author
-
Lippi, Lorenzo, de Sire, Alessandro, Losco, Luigi, Mezian, Kamal, Folli, Arianna, Ivanova, Mariia, Zattoni, Lorenzo, Moalli, Stefano, Ammendolia, Antonio, Alfano, Carmine, Fusco, Nicola, and Invernizzi, Marco
- Subjects
BREAST cancer ,ANALGESIA ,REHABILITATION ,RESISTANCE training ,MEDICAL rehabilitation ,SYNDROMES ,HEREDITARY cancer syndromes - Abstract
Background: Axillary web syndrome (AWS) is one of the most prevalent and underrecognized disorders affecting breast cancer (BC) women. However, the optimal therapeutic strategy to manage AWS is far from being fully characterized. Therefore, this systematic review aims to provide a broad overview of the available rehabilitation treatments in this burdensome condition. Methods: On 13 January 2022, PubMed, Scopus, Web of Science, Cochrane, and PEDro were systematically searched for clinical studies assessing rehabilitation interventions in post-surgical BC women with AWS. The outcomes analyzed were pain, AWS clinical resolution, upper limb function, and health-related quality of life (HR-QoL). Results: The search identified 1115 records, of which 11 studies were included. A total of 174 patients were assessed (ages ranging from 37 and 66 years old). The interventions included manual lymphatic drainage, manual therapy, stretching, resistance training, mobilization techniques, and Kinesio tape. Positive improvements were reported in terms of pain relief (in 7 studies), AWS clinical resolution (in 9 studies), upper limb function (in 10 studies), and HR-QoL (in 2 studies). Conclusions: Our findings suggest that rehabilitation might be considered an effective therapeutic strategy in AWS patients. Further RCTs are needed to characterize the optimal rehabilitative interventions. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
40. Advanced proteomics MALDI-MSI imaging in chronic glomerulonephrites: from diagnostics to precision medicine
- Author
-
IVANOVA, MARIIA, Ivanova, M, and MAGNI, FULVIO
- Subjects
Mass-spectrometry ,CKD ,MALDI-MSI ,Proteomic ,Glomerulonephriti ,BIO/10 - BIOCHIMICA - Abstract
Chronical kidney disease (CKD) is a worldwide health problem with increasing incidence, where the major part accounts for chronic glomerulonephrites (GN). It is a group of diseases of various aetiology and multiform clinical course, having various prognosis which is often hardly predictable as well as existing prognostic markers are not always certain. There is an urging need of new reliable and specific prognostic and therapeutic markers research. A modern proteomic technology - Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) has been employed in many GN studies showing promising results. We aimed to study several forms of primary and secondary glomerulonephrites (membranous nephropathy, IgA nephropathy, diabetic nephropathy) to enlighten possible molecular alterations significant of diseases’ progression. The studies were performed on renal tissue biopsies, analysing them with high spatial resolution MALDI-MSI to get better visualisation of signals’ co-localisation on tissue. We performed a comparison of molecular profiles of various forms of GN. As a result, we were able to generate and distinguish specific tryptic peptides profiles of different cell regions (tubules, glomeruli, interstitium, connective tissue) and detect proteins with an altered intensity, implicated in inflammatory and healing pathways. MALDI-MSI, being able to define renal structures, could provide additional diagnostic and prognostic information. Generation of collective diagnostic panels may fulfil our pathogenesis understanding and assist clinical prognostic assessment. Chronical kidney disease (CKD) is a worldwide health problem with increasing incidence, where the major part accounts for chronic glomerulonephrites (GN). It is a group of diseases of various aetiology and multiform clinical course, having various prognosis which is often hardly predictable as well as existing prognostic markers are not always certain. There is an urging need of new reliable and specific prognostic and therapeutic markers research. A modern proteomic technology - Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) has been employed in many GN studies showing promising results. We aimed to study several forms of primary and secondary glomerulonephrites (membranous nephropathy, IgA nephropathy, diabetic nephropathy) to enlighten possible molecular alterations significant of diseases’ progression. The studies were performed on renal tissue biopsies, analysing them with high spatial resolution MALDI-MSI to get better visualisation of signals’ co-localisation on tissue. We performed a comparison of molecular profiles of various forms of GN. As a result, we were able to generate and distinguish specific tryptic peptides profiles of different cell regions (tubules, glomeruli, interstitium, connective tissue) and detect proteins with an altered intensity, implicated in inflammatory and healing pathways. MALDI-MSI, being able to define renal structures, could provide additional diagnostic and prognostic information. Generation of collective diagnostic panels may fulfil our pathogenesis understanding and assist clinical prognostic assessment.
- Published
- 2020
41. PATHOMORPHOLOGICAL CHARACTERISTICS OF IMMUNOCOMPLEX RENAL DISEASE IN PATIENTS WITH IMMUNODEFICIENCY VIRUS AND HEPATITIS C VIRUS, RECEIVING ANTIRETROVIRAL THERAPY.
- Author
-
Gorodetska, Anna I., Dyadyk, Olena O., Ivanova, Mariia D., and Pasiyeshvili, Nana M.
- Published
- 2021
- Full Text
- View/download PDF
42. Протеоміка та мас-спектрометрія з матрично-активованою лазерною десорбцією/іонізацією як сучасний діагностичний інструмент при захворюваннях нирок
- Author
-
Ivanova, Mariia, Dyadyk, Olena, Smith, Andrew, Santorelli, Lucia, Stella, Martina, Galli, Manuel, Chinello, Clizia, and Magni, Fulvio
- Subjects
хронічна хвороба нирок ,протеоміка ,мас-спектрометрія з матрично-активованою лазерною десорбцією/іонізацією ,прогнозування результату хронічної хвороби нирок ,прогнозування відповіді на лікування ,хроническая болезнь почек ,протеомика ,масс-спектрометрия с матрично-активированной лазерной десорбцией/ионизацией ,прогнозирование исхода хронической болезни почек ,прогнозирование ответа на лечение ,сhronic kidney disease ,proteomics ,matrix-assisted laser desorption/ionization mass spectrometry imaging ,сhronic kidney disease outcome prognosis ,predict treatment response - Abstract
As a result of the rapid evolution of modern science, we are continually improving our knowledge of disease pathogenesis and morphology on a daily basis. Due to the era of omics sciences, such as genomics, transcriptomics, and proteomics, there is a strong desire to comprehend the molecular mechanisms of diseases and organisms. The final aims would be to perform more successful diagnosis/prognosis, identify potential therapeutic targets, and predict treatment response. Chronic kidney disease (CKD) is a worldwide health problem with a rapidly increasing incidence, with CKD itself encompassing a large subset of diseases. Recently, modern proteomic technologies, such as matrix-assisted laser desorption/ionization mass spectrometry imaging, have been employed in order to study CKD. Notwithstanding the general infancy of these methodologies, there are already an impressive number of studies and publications related to this subject., В результате быстрого развития современной науки мы постоянно, изо дня в день, совершенствуем наши знания о патогенезе и морфологии заболеваний. В связи с наступлением эры наукомик, таких как геномика, транскриптомика и протеомика, существует большая необходимость в понимании молекулярных механизмов болезней и организмов. Конечными целями должны быть следующие: более успешные диагностика и прогноз, выявление потенциальных терапевтических мишеней и прогнозирование ответа на лечение. Хроническая болезнь почек (ХБП) является всемирной проблемой здравоохранения, характеризующейся быстрорастущей заболеваемостью, a сам термин «ХБП» охватывает большое подмножество заболеваний. В последнее время для изучения ХБП используются современные технологии протеомики, такие как масс-спектрометрия с матрично-активированной лазерной десорбцией/ионизацией. Несмотря на ранний этап развития подобных методик, уже существует внушительное количество исследований и публикаций, посвященных этой теме., Внаслідок швидкого розвитку сучасної науки ми постійно, день у день, удосконалюємо наші знання про патогенез і морфологію захворювань. У зв’язку з настанням ери наукомік, таких як геноміка, транскріптоміка та протеоміка, є велика необхідність у розумінні молекулярних механізмів хвороб і організмів. Кінцевими цілями повинні бути такі: більш успішні діагностика та прогноз, виявлення потенційних терапевтичних мішеней і прогнозування відповіді на лікування. Хронічна хвороба нирок (ХХН) є всесвітньою проблемою охорони здоров’я, що характеризується швидкозростаючою захворюваністю, a сам термін «ХХН» охоплює велику підмножину захворювань. Останнім часом для вивчення ХХН використовуються сучасні технології протеоміки, такі як мас-спектрометрія з матрично-активованою лазерною десорбцією/іонізацією. Незважаючи на ранній етап розвитку подібних методик, уже існує значна кількість досліджень і публікацій, присвячених цій темі.
- Published
- 2018
43. Coaching to increase water intake in CKD 1–5: overview and detailed analysis of three clinical trials.
- Author
-
Ivanova, Mariia D., Gozhenko, Anatoliy I., Crestanello, Tommy, and Ivanov, Dmytro D.
- Subjects
DRINKING (Physiology) ,CLINICAL trials ,ALBUMINS ,KIDNEY function tests ,GLOMERULAR filtration rate - Abstract
Copyright of Pocki is the property of Zaslavsky O.Yu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
44. Detecting Proteomic Indicators to Distinguish Diabetic Nephropathy from Hypertensive Nephrosclerosis by Integrating Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging with High-Mass Accuracy Mass Spectrometry.
- Author
-
Smith, Andrew, Iablokov, Vadim, Mazza, Mariafrancesca, Guarnerio, Sonia, Denti, Vanna, Ivanova, Mariia, Stella, Martina, Piga, Isabella, Chinello, Clizia, Heijs, Bram, van Veelen, Peter A., Benediktsson, Hallgrimur, Muruve, Daniel A., and Magni, Fulvio
- Subjects
TANDEM mass spectrometry ,MASS spectrometry ,DIABETIC nephropathies ,HYPERTENSION ,PROTEOMICS ,HYPERTENSION risk factors - Abstract
Introduction: Diabetic nephropathy (DN) and hypertensive nephrosclerosis (HN) represent the most common causes of chronic kidney disease (CKD) and many patients progress to -end-stage renal disease. Patients are treated primarily through the management of cardiovas-cular risk factors and hypertension; however patients with HN have a more favorable outcome. A noninvasive clinical approach to separate these two entities, especially in hypertensive patients who also have diabetes, would allow for targeted treatment and more appropriate resource allocation to those patients at the highest risk of CKD progression. Meth-ods: In this preliminary study, high-spatial-resolution matrix-assisted laser desorption/ion-ization (MALDI) mass spectrometry imaging (MSI) was integrated with high-mass accuracy MALDI-FTICR-MS and nLC-ESI-MS/MS analysis in order to detect tissue proteins within kidney biopsies to discriminate cases of DN (n = 9) from cases of HN (n = 9). Results: Differences in the tryptic peptide profiles of the 2 groups could clearly be detected, with these becoming even more evident in the more severe histological classes, even if this was not evident with routine histology. In particular, 4 putative proteins were detected and had a higher signal intensity within regions of DN tissue with extensive sclerosis or fibrosis. Among these, 2 proteins (PGRMC1 and CO3) had a signal intensity that increased at the latter stages of the disease and may be associated with progression. Discussion/Conclusion: This preliminary study represents a valuable starting point for a future study employing a larger cohort of patients to develop sensitive and specific protein biomarkers that could reliably differentiate between diabetic and hypertensive causes of CKD to allow for improved diagnosis, fewer biopsy procedures, and refined treatment approaches for clinicians. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
45. Hydration: the review of 3 trials.
- Author
-
Ivanov, Dmytro and Ivanova, Mariia
- Subjects
HYDRATION ,KIDNEY diseases ,QUALITY of life ,CLINICAL trials ,OSMOLAR concentration - Abstract
Copyright of Pocki is the property of Zaslavsky O.Yu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
46. Pt-Decorated Boron Nitride Nanosheets as Artificial Nanozyme for Detection of Dopamine.
- Author
-
Ivanova, Mariia N., Grayfer, Ekaterina D., Plotnikova, Elena E., Kibis, Lidiya S., Darabdhara, Gitashree, Boruah, Purna K., Das, Manash R., and Fedorov, Vladimir E.
- Published
- 2019
- Full Text
- View/download PDF
47. Theoretical and experimental comparative study of the stability and phase transformations of sesquichalcogenides M2Q3 (M = Nb, Mo; Q = S, Se).
- Author
-
Ivanova, Mariia N., Enyashin, Andrey N., Grayfer, Ekaterina D., and Fedorov, Vladimir E.
- Abstract
The extensive family of transition metal chalcogenides has been comprehensively investigated owing to their diverse useful properties. However, even among them, there are ones that have received comparatively less attention; in particular, these are molybdenum and niobium sulfides and selenides with the composition of M : Q = 2 : 3 (M = Mo, Nb; Q = S, Se). Mo or Nb chalcogenides with this stoichiometry may adopt one of two structures: (i) sesquichalcogenides M
2 Q3 , where important structural elements are infinite metal chains, or (ii) self-intercalated compounds M1.33 Q2 , in which extra M atoms are inserted between MQ2 layers. Depending on the M–Q combination, in practice, either none, one, or both of them may exist. The reasons for chemical dissimilarity in the series of seemingly related compounds haven’t been addressed until the present work. Here, we present the first generalized comparative study of these chalcogenides by quantum-chemical computations verified by laboratory experiments. High-temperature phases of Mo2 S3 and Nb2 Se3 may be stably isolated at room temperature, while “Nb2 S3 ” and “Mo2 Se3 ” had not been obtained, nor were they expected to exist from DFT data. The structure-determining motifs of sesquichalcogenides M2 Q3 are metallic chains, and thus, apparently, if metal's electron deficiency (or excess) prevents the formation of M–M chains, then the M2 Q3 -type structure cannot form. If the metal has an adequate electron density and the structure does form at high temperature (as it happens for Mo2 S3 and Nb2 Se3 ), then it can be kinetically stabilized by quenching, and stored under laboratory conditions for long times. However, if Nb2 Se3 is left to cool down slowly, it undergoes phase transition to iso-stoichiometric intercalate Nb1.333 Se2 , in good agreement with DFT predictions of the close values of their free energies. Isostructural intercalate Nb1.333 S2 is found to be the only experimental product in the Nb–S system, in full accordance with DFT prediction. Effective stabilization of self-intercalated phases is provided by significant charge transfer from intercalated Nb atoms to the NbQ2 layers, as confirmed by DFT. The obtained data may serve to get insight into polymorphism of some less-studied transition metal chalcogenides and to promote their use for future functional materials. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
48. High Spatial Resolution MALDI‐MS Imaging in the Study of Membranous Nephropathy.
- Author
-
Smith, Andrew, L'Imperio, Vincenzo, Denti, Vanna, Mazza, Mariafrancesca, Ivanova, Mariia, Stella, Martina, Piga, Isabella, Chinello, Clizia, Ajello, Elena, Pieruzzi, Federico, Pagni, Fabio, and Magni, Fulvio
- Published
- 2019
- Full Text
- View/download PDF
49. Spatially Resolved Molecular Approaches for the Characterisation of Non-Invasive Follicular Tumours with Papillary-like Features (NIFTPs)
- Author
-
Isabella Piga, Vincenzo L’Imperio, Lucrezia Principi, Claudio Bellevicine, Nicola Fusco, Fausto Maffini, Konstantinos Venetis, Mariia Ivanova, Davide Seminati, Gabriele Casati, Lisa Pagani, Stefania Galimberti, Giulia Capitoli, Mattia Garancini, Andrea-Valer Gatti, Fulvio Magni, Fabio Pagni, Piga, I, L'Imperio, V, Principi, L, Bellevicine, C, Fusco, N, Maffini, F, Venetis, K, Ivanova, M, Seminati, D, Casati, G, Pagani, L, Galimberti, S, Capitoli, G, Garancini, M, Gatti, A, Magni, F, Pagni, F, Piga, Isabella, L’Imperio, Vincenzo, Principi, Lucrezia, Bellevicine, Claudio, Fusco, Nicola, Maffini, Fausto, Venetis, Konstantino, Ivanova, Mariia, Seminati, Davide, Casati, Gabriele, Pagani, Lisa, Galimberti, Stefania, Capitoli, Giulia, Garancini, Mattia, Gatti, Andrea-Valer, Magni, Fulvio, and Pagni, Fabio
- Subjects
NIFTP ,Organic Chemistry ,General Medicine ,Catalysis ,Computer Science Applications ,Inorganic Chemistry ,proteomics ,NGS ,MALDI–MSI ,thyroid cancer ,Physical and Theoretical Chemistry ,Molecular Biology ,proteomic ,Spectroscopy - Abstract
Noninvasive follicular thyroid neoplasms with papillary-like nuclear features (NIFTP) are low-risk thyroid lesions most often characterised by RAS-type mutations. The histological diagnosis may be challenging, and even immunohistochemistry and molecular approaches have not yet provided conclusive solutions. This study characterises a set of NIFTPs by Matrix-Assisted Laser Desorption/Ionisation (MALDI)–Mass Spectrometry Imaging (MSI) to highlight the proteomic signatures capable of overcoming histological challenges. Archived formalin-fixed paraffin-embedded samples from 10 NIFTPs (n = 6 RAS-mutated and n = 4 RAS-wild type) were trypsin-digested and analysed by MALDI–MSI, comparing their profiles to normal tissue and synchronous benign nodules. This allowed the definition of a four-peptide signature able to distinguish RAS-mutant from wild-type cases, the latter showing proteomic similarities to hyperplastic nodules. Moreover, among the differentially expressed signals, Peptidylprolyl Isomerase A (PPIA, 1505.8 m/z), which has already demonstrated a role in the development of cancer, was found overexpressed in NIFTP RAS-mutated nodules compared to wild-type lesions. These results underlined that high-throughput proteomic approaches may add a further level of biological comprehension for NIFTPs. In the future, thanks to the powerful single-cell detail achieved by new instruments, the complementary NGS–MALDI imaging sequence might be the correct methodological approach to confirm that the current NIFTP definition encompasses heterogeneous lesions that must be further characterised.
- Published
- 2023
- Full Text
- View/download PDF
50. Thermal and kinetic studies of sulfur-rich molybdenum and tungsten polysulfides.
- Author
-
Poltarak, Anastasiia A., Logvinenko, Vladimir A., Enyashin, Andrey N., Artemkina, Sofya B., Poltarak, Pavel A., Ivanova, Mariia N., Grayfer, Ekaterina D., and Fedorov, Vladimir E.
- Subjects
- *
CHEMICAL properties , *ACTIVATION energy , *TRANSITION metal chalcogenides , *TRANSITION metals , *INTERMEDIATE goods , *MOLYBDENUM , *TUNGSTEN - Abstract
Sulfur-rich transition metal polysulfides with multiple disulfide bonds (S–S) are a family of inorganic materials with unusual chemical properties and potential in catalysis and energy-related applications. In the current work, we present a kinetic study of the thermal decomposition of amorphous pentasulfides MoS 5 and WS 5 based on thermogravimetric analysis (TGA) in an inert atmosphere at various heating rates (10, 20, 30 °C/min). Thermal decomposition of both pentasulfides proceeds via a two-step, consecutive process. First, starting from ∼190 °C (M = Mo) or ∼240 °C (M = W) MS 5 transform into intermediate products MS 3 , which then convert into MS 2 at ∼380 °C (M = Mo) or 300 °C (M = W) (at the heating rate of 30 °C/min). The main kinetic parameters (activation energy, pre-exponential factor and reaction type) were calculated. Both steps are well described by the Avrami–Erofeev model, comprising random nucleation and subsequent nucleate growth. The rate-controlling step is diffusion, as spherical particle morphology of MoS 5 and WS 5 may slow down the elimination of sulfur produced during decomposition. The final decomposition products are weakly crystalline disulfides (MoS 2 , WS 2), which inherit the spherical morphology of MoS 5 (WS 5). Theoretical calculations suggest that the very first step of the MS 5 decomposition process is the depolymerization of MS 5 chains into cluster fragments, rather than direct desulfurization. Image 1 • Amorphous sulfur-rich spherical particles of MoS 5 and WS 5 are prepared by a wet method. • MoS 5 and WS 5 thermally decompose to MoS 2 (WS 2) via a two-step, consecutive process. • Activation energy, pre-exponential factor and the reaction model were calculated. • Thermal decomposition follows the Avrami–Erofeev reaction mechanism. • DFT modeling reveals that the decomposition begins with the MoS 5 (WS 5) chain depolymerization. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.