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Stecoza CE, Nitulescu GM, Draghici C, Caproiu MT, Hanganu A, Olaru OT, Mihai DP, Bostan M, Mihaila M. Synthesis of 1,3,4-Thiadiazole Derivatives and Their Anticancer Evaluation. Int J Mol Sci 2023; 24:17476. [PMID: 38139304 PMCID: PMC10743895 DOI: 10.3390/ijms242417476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
Thiadiazole derivatives have garnered significant attention in the field of medicinal chemistry due to their diverse pharmacological activities, including anticancer properties. This article presents the synthesis of a series of thiadiazole derivatives and investigates their chemical characterization and potential anticancer effects on various cell lines. The results of the nuclear magnetic resonance (NMR) analyses confirmed the successful formation of the target compounds. The anticancer potential was evaluated through in silico and in vitro cell-based assays using LoVo and MCF-7 cancer lines. The assays included cell viability, proliferation, apoptosis, and cell cycle analysis to assess the compounds' effects on cancer cell growth and survival. Daphnia magna was used as an invertebrate model for the toxicity evaluation of the compounds. The results revealed promising anticancer activity for several of the synthesized derivatives, suggesting their potential as lead compounds for further drug development. The novel compound 2g, 5-[2-(benzenesulfonylmethyl)phenyl]-1,3,4-thiadiazol-2-amine, demonstrated good anti-proliferative effects, exhibiting an IC50 value of 2.44 µM against LoVo and 23.29 µM against MCF-7 after a 48-h incubation and little toxic effects in the Daphnia test.
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Affiliation(s)
- Camelia Elena Stecoza
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (C.E.S.); (O.T.O.); (D.P.M.)
| | - George Mihai Nitulescu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (C.E.S.); (O.T.O.); (D.P.M.)
| | - Constantin Draghici
- “Costin D. Neniţescu” Institute of Organic and Supramolecular Chemistry, Romanian Academy, 202B Splaiul Independenţei, 060023 Bucharest, Romania (A.H.)
| | - Miron Teodor Caproiu
- “Costin D. Neniţescu” Institute of Organic and Supramolecular Chemistry, Romanian Academy, 202B Splaiul Independenţei, 060023 Bucharest, Romania (A.H.)
| | - Anamaria Hanganu
- “Costin D. Neniţescu” Institute of Organic and Supramolecular Chemistry, Romanian Academy, 202B Splaiul Independenţei, 060023 Bucharest, Romania (A.H.)
| | - Octavian Tudorel Olaru
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (C.E.S.); (O.T.O.); (D.P.M.)
| | - Dragos Paul Mihai
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (C.E.S.); (O.T.O.); (D.P.M.)
| | - Marinela Bostan
- Stefan S. Nicolau Institute of Virology, 285 Mihai Bravu Street, 030304 Bucharest, Romania; (M.B.); (M.M.)
| | - Mirela Mihaila
- Stefan S. Nicolau Institute of Virology, 285 Mihai Bravu Street, 030304 Bucharest, Romania; (M.B.); (M.M.)
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Roman V, Mihaila M, Radu N, Marineata S, Diaconu CC, Bostan M. Cell Culture Model Evolution and Its Impact on Improving Therapy Efficiency in Lung Cancer. Cancers (Basel) 2023; 15:4996. [PMID: 37894363 PMCID: PMC10605536 DOI: 10.3390/cancers15204996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 10/10/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Optimizing cell culture conditions is essential to ensure experimental reproducibility. To improve the accuracy of preclinical predictions about the response of tumor cells to different classes of drugs, researchers have used 2D or 3D cell cultures in vitro to mimic the cellular processes occurring in vivo. While 2D cell culture provides valuable information on how therapeutic agents act on tumor cells, it cannot quantify how the tumor microenvironment influences the response to therapy. This review presents the necessary strategies for transitioning from 2D to 3D cell cultures, which have facilitated the rapid evolution of bioengineering techniques, leading to the development of microfluidic technology, including organ-on-chip and tumor-on-chip devices. Additionally, the study aims to highlight the impact of the advent of 3D bioprinting and microfluidic technology and their implications for improving cancer treatment and approaching personalized therapy, especially for lung cancer. Furthermore, implementing microfluidic technology in cancer studies can generate a series of challenges and future perspectives that lead to the discovery of new predictive markers or targets for antitumor treatment.
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Affiliation(s)
- Viviana Roman
- Center of Immunology, Stefan S. Nicolau Institute of Virology, Romanian Academy, 030304 Bucharest, Romania; (V.R.); (M.B.)
| | - Mirela Mihaila
- Center of Immunology, Stefan S. Nicolau Institute of Virology, Romanian Academy, 030304 Bucharest, Romania; (V.R.); (M.B.)
| | - Nicoleta Radu
- Department of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
- Biotechnology Department, National Institute for Chemistry and Petrochemistry R&D of Bucharest, 060021 Bucharest, Romania
| | - Stefania Marineata
- Faculty of Medicine, University of Medicine and Pharmacy Carol Davila, 050471 Bucharest, Romania;
| | - Carmen Cristina Diaconu
- Department of Cellular and Molecular Pathology, Stefan S. Nicolau Institute of Virology, 030304 Bucharest, Romania;
| | - Marinela Bostan
- Center of Immunology, Stefan S. Nicolau Institute of Virology, Romanian Academy, 030304 Bucharest, Romania; (V.R.); (M.B.)
- Department of Immunology, ‘Victor Babeș’ National Institute of Pathology, 050096 Bucharest, Romania
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Tincu R, Mihaila M, Bostan M, Teodorescu F, Istrati D, Badea N, Lacatusu I. Novel Bovine Serum Albumin-Decorated–Nanostructured Lipid Carriers Able to Modulate Apoptosis and Cell-Cycle Response in Ovarian, Breast, and Colon Tumoral Cells. Pharmaceutics 2023; 15:pharmaceutics15041125. [PMID: 37111611 PMCID: PMC10144507 DOI: 10.3390/pharmaceutics15041125] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
A novel nanoscale approach was developed for the improved cellular internalization of hybrid bovine serum albumin–lipid nanocarriers loaded with piperine (NLC-Pip–BSA) in different tumor cells. The effect of the BSA-targeted–NLC-Pip and untargeted-NLC-Pip on the viability, proliferation, and levels of cell-cycle damage and apoptosis in the colon (LoVo), ovarian (SKOV3) and breast (MCF7) adenocarcinoma cell lines was comparatively discussed. NLCs were characterized concerning particle size, morphology, zeta potential, phytochemical encapsulation efficiency, ATR-FTIR, and fluorescence spectroscopy. The results showed that NLC-Pip–BSA showed a mean size below 140 nm, a zeta potential of −60 mV, and an entrapment efficiency of 81.94% for NLC-Pip and 80.45% for NLC-Pip–BSA. Fluorescence spectroscopy confirmed the coating of the NLC with the albumin. By MTS and RTCA assays, NLC-Pip–BSA showed a more pronounced response against the LoVo colon cell line and MCF-7 breast tumor cell lines than against the ovarian SKOV-3 cell line. Flow cytometry assay demonstrated that the targeted NLC-Pip had more cytotoxicity and improved apoptosis than the untargeted ones in MCF-7 tumor cells (p < 0.05). NLC-Pip caused a significant increase in MCF-7 breast tumor cell apoptosis of ~8X, while NLC-Pip–BSA has shown an 11-fold increase in apoptosis.
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Affiliation(s)
- Robert Tincu
- Faculty of Chemical Engineering and Biotechnologies, University POLITEHNICA of Bucharest, Polizu No. 1, 011061 Bucharest, Romania
- “C.D. Nenitzescu” Institute of Organic and Supramolecular Chemistry of the Romanian Academy, 202B Splaiul Independentei, 060023 Bucharest, Romania
| | - Mirela Mihaila
- Stefan S. Nicolau Institute of Virology, Mihai Bravu Street No. 285, 030304 Bucharest, Romania
- Faculty of Pharmacy, Titu Maiorescu University, 040314 Bucharest, Romania
| | - Marinela Bostan
- Stefan S. Nicolau Institute of Virology, Mihai Bravu Street No. 285, 030304 Bucharest, Romania
- Department of Immunology, Victor Babes National Institute of Pathology, 050096 Bucharest, Romania
| | - Florina Teodorescu
- “C.D. Nenitzescu” Institute of Organic and Supramolecular Chemistry of the Romanian Academy, 202B Splaiul Independentei, 060023 Bucharest, Romania
| | - Daniela Istrati
- Faculty of Chemical Engineering and Biotechnologies, University POLITEHNICA of Bucharest, Polizu No. 1, 011061 Bucharest, Romania
| | - Nicoleta Badea
- Faculty of Chemical Engineering and Biotechnologies, University POLITEHNICA of Bucharest, Polizu No. 1, 011061 Bucharest, Romania
| | - Ioana Lacatusu
- Faculty of Chemical Engineering and Biotechnologies, University POLITEHNICA of Bucharest, Polizu No. 1, 011061 Bucharest, Romania
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Schroder V, Radu N, Cornea PC, Coman OA, Pirvu LC, Mohammed MSO, Stefaniu A, Pintilie L, Bostan M, Caramihai MD, Roman V. Studies Regarding the Antimicrobial Behavior of Clotrimazole and Limonene. Antibiotics (Basel) 2022; 11:antibiotics11121816. [PMID: 36551473 PMCID: PMC9774930 DOI: 10.3390/antibiotics11121816] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
The paper presents the results of the studies performed to establish the effect of the mixtures between limonene and clotrimazole against microbial pathogens involved in dermatological diseases, such as Candida albicans, Staphyloccocus aureus, and Escherichia coli. Preliminary data obtained from the studies performed in microplates revealed a possible synergism between the mixture of clotrimazole and limonene for Staphylococcus aureus. Studies performed "in silico" with programs such as CLC Drug Discovery Workbench and MOLEGRO Virtual Docker, gave favorable scores for docking each compound on a specific binding site for each microorganism. The tests performed for validation, with the clotrimazole (0.1%) and different sources of limonene (1.9% citrus essential oils), showed a synergistic effect on Staphylococcus aureus in the case of the mixtures between clotrimazole and the essential oils of Citrus reticulata or Citrus paradisi. The studies performed on Staphylococcus aureus MRSA showed a synergistic effect between clotrimazole and the essential oils obtained from Citrus bergamia, Citrus aurantium, or Citrus paradisi. In the case of Pseudomonas aeruginosa, essential oils and clotrimazole used alone did not exhibit antimicrobial activities, but the mixtures between clotrimazole and the essential oils of Citrus bergamia or Citrus sinensis exhibited a synergistic antimicrobial effect.
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Affiliation(s)
- Verginica Schroder
- Faculty of Pharmacy, University Ovidius of Constanta, 900527 Constanta, Romania
| | - Nicoleta Radu
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
- Department of Biotechnology, National Institute of Chemistry and Petrochemistry R&D of Bucharest, 060021 Bucharest, Romania
- Correspondence: (N.R.); (M.B.)
| | - Petruta Calina Cornea
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Oana Andreia Coman
- Faculty of Medicine, University of Medicine and Pharmacy Carol Davila of Bucharest, 020021 Bucharest, Romania
| | - Lucia Camelia Pirvu
- Department of Pharmaceutical Biotechnology, National Institute of Chemical Pharmaceutical R&D of Bucharest, 031299 Bucharest, Romania
| | - Mohammed Shaymaa Omar Mohammed
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Amalia Stefaniu
- Department of Pharmaceutical Biotechnology, National Institute of Chemical Pharmaceutical R&D of Bucharest, 031299 Bucharest, Romania
| | - Lucia Pintilie
- Department of Pharmaceutical Biotechnology, National Institute of Chemical Pharmaceutical R&D of Bucharest, 031299 Bucharest, Romania
| | - Marinela Bostan
- Department of Immunology, National Institute of Pathology and Biomedical Sciences R&D “Victor Babeș’’, 050096 Bucharest, Romania
- Center of Immunology, Institute of Virology Stefan S. Nicolau, 030304 Bucharest, Romania
- Correspondence: (N.R.); (M.B.)
| | - Mihai Dan Caramihai
- Faculty of Computer Sciences, Politehnica University of Bucharest, 060042 Bucharest, Romania
| | - Viviana Roman
- Center of Immunology, Institute of Virology Stefan S. Nicolau, 030304 Bucharest, Romania
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Zaharie MGO, Radu N, Pirvu L, Bostan M, Voicescu M, Begea M, Constantin M, Voaides C, Babeanu N, Roman V. Studies Regarding the Pharmaceutical Potential of Derivative Products from Plantain. Plants (Basel) 2022; 11:1827. [PMID: 35890460 PMCID: PMC9321672 DOI: 10.3390/plants11141827] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
In this study, three types of extracts isolated from leaves of Plantain (Plantago lanceolata) were tested for their chemical content and biological activities. The three bioproducts are combinations of polysaccharides and polyphenols (flavonoids and iridoidic compounds), and they were tested for antioxidant, antifungal, antitumor, and prebiotic activity (particularly for polysaccharides fraction). Briefly, the iridoid-enriched fraction has revealed a pro-oxidant activity, while the flavonoid-enriched fraction had a high antioxidant potency; the polysaccharide fraction also indicated a pro-oxidant activity, explained by the co-presence of iridoid glycosides. All three bioproducts demonstrated moderate antifungal effects against Aspergillus sp., Penicillium sp., and dermatophytes, too. Studies in vitro proved inhibitory activity of the three fractions on the leukemic tumor cell line THP-1, the main mechanism being apoptosis stimulation, while the polysaccharide fraction indicated a clear prebiotic activity, in the concentration range between 1 and 1000 µg/mL, evaluated as higher than that of the reference products used, inulin and dextrose, respectively.
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Affiliation(s)
- Marilena-Gabriela Olteanu Zaharie
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Boulevard, 011464 Bucharest, Romania; (M.-G.O.Z.); (C.V.); (N.B.)
| | - Nicoleta Radu
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Boulevard, 011464 Bucharest, Romania; (M.-G.O.Z.); (C.V.); (N.B.)
- Biotechnology Department, National Institute of Chemistry and Petrochemistry R & D of Bucharest, 202 Splaiul Independentei Street, 060021 Bucharest, Romania;
| | - Lucia Pirvu
- Biotechnology Department, National Institute of Chemical Pharmaceutical R & D, 112 Vitan Road, 031299 Bucharest, Romania;
| | - Marinela Bostan
- Institute of Virology Stefan S. Nicolau, Center of Immunology, 285 Mihai Bravu Avenue, 030304 Bucharest, Romania; (M.B.); (V.R.)
- Immunology Department, Victor Babes National Institute of Pathology, 050096 Bucharest, Romania
| | - Mariana Voicescu
- Institute of Physical Chemistry Ilie Murgulescu, 202 Splaiul Independentei, 060021 Bucharest, Romania;
| | - Mihaela Begea
- Faculty of Biotechnical Systems Engineering, Politehnica University of Bucharest, 313 Splaiul Independentei, 060026 Bucharest, Romania
| | - Mariana Constantin
- Biotechnology Department, National Institute of Chemistry and Petrochemistry R & D of Bucharest, 202 Splaiul Independentei Street, 060021 Bucharest, Romania;
- Faculty of Pharmacy, University Titu Maiorescu, 178 Calea Vacaresti, 040051 Bucharest, Romania
| | - Catalina Voaides
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Boulevard, 011464 Bucharest, Romania; (M.-G.O.Z.); (C.V.); (N.B.)
| | - Narcisa Babeanu
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Boulevard, 011464 Bucharest, Romania; (M.-G.O.Z.); (C.V.); (N.B.)
| | - Viviana Roman
- Institute of Virology Stefan S. Nicolau, Center of Immunology, 285 Mihai Bravu Avenue, 030304 Bucharest, Romania; (M.B.); (V.R.)
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Stecoza CE, Nitulescu GM, Draghici C, Caproiu MT, Olaru OT, Bostan M, Mihaila M. Synthesis and Anticancer Evaluation of New 1,3,4-Oxadiazole Derivatives. Pharmaceuticals (Basel) 2021; 14:438. [PMID: 34066442 PMCID: PMC8148175 DOI: 10.3390/ph14050438] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 12/24/2022] Open
Abstract
In order to develop novel chemotherapeutic agents with potent anticancer activities, a series of new 2,5-diaryl/heteroaryl-1,3,4-oxadiazoles were designed and synthesized. The structures of the new compounds were established using elemental analyses, IR and NMR spectral data. The compounds were evaluated for their anticancer potential on two standardized human cell lines, HT-29 (colon adenocarcinoma) and MDA-MB-231 (breast adenocarcinoma). Cytotoxicity was measured by MTS assay, while cell cycle arrest and apoptosis assays were conducted using a flow cytometer, the results showing that the cell line MDA-MB-231 is more sensitive to the compounds' action. The results of the predictive studies using the PASS application and the structural similarity analysis indicated STAT3 and miR-21 as the most probable pharmacological targets for the new compounds. The promising effect of compound 3e, 2-[2-(phenylsulfanylmethyl)phenyl]-5-(4-pyridyl)-1,3,4-oxadiazole, especially on the MDA-MB-231 cell line motivates future studies to improve the anticancer profile and to reduce the toxicological risks. It is worth noting that 3e produced a low toxic effect in the D. magna 24 h assay and the predictive studies on rat acute toxicity suggest a low degree of toxic risks.
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Affiliation(s)
- Camelia Elena Stecoza
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (C.E.S.); (O.T.O.)
| | - George Mihai Nitulescu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (C.E.S.); (O.T.O.)
| | - Constantin Draghici
- “Costin D. Neniţescu” Centre of Organic Chemistry Romanian Academy, 202 B Splaiul Independenţei, 060023 Bucharest, Romania; (C.D.); (M.T.C.)
| | - Miron Teodor Caproiu
- “Costin D. Neniţescu” Centre of Organic Chemistry Romanian Academy, 202 B Splaiul Independenţei, 060023 Bucharest, Romania; (C.D.); (M.T.C.)
| | - Octavian Tudorel Olaru
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania; (C.E.S.); (O.T.O.)
| | - Marinela Bostan
- Center of Immunology, “Stefan S. Nicolau” Institute of Virology, 030304 Bucharest, Romania; (M.B.); (M.M.)
| | - Mirela Mihaila
- Center of Immunology, “Stefan S. Nicolau” Institute of Virology, 030304 Bucharest, Romania; (M.B.); (M.M.)
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Ion G, Akinsete JA, Witte TR, Bostan M, Hardman WE. Maternal fish oil consumption has a negative impact on mammary gland tumorigenesis in C3(1) Tag mice offspring. Eur J Nutr 2021; 60:3771-3781. [PMID: 33817748 DOI: 10.1007/s00394-021-02546-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/22/2021] [Indexed: 12/24/2022]
Abstract
PURPOSE Omega-3 fatty acids have been shown to reduce the incidence and slow the growth of mammary gland cancer in rodent models. Since exposure to dietary components during the critical developmental times of gestation and lactation may alter risk for mammary gland cancer in females, we tested whether exposure to increased levels of long-chain omega-3 fatty acids from fish oils would be preventive or promotional to mammary gland cancer in the offspring. METHODS Normal SV129 female mice were fed AIN 76 diets containing either 10% corn oil (control, 50% omega 6, n-6) or 5% of an omega-3 (n-3) fatty acid concentrate (fish oil 60% n-3) + 5% canola oil (10% n-3 + 20% n-6). Females were then mated with C(3)1 TAg transgenic mice. At weaning (3 weeks), pups were randomized to either the corn (C) or fish oil (F) diet, 15-17 mice per group. Four experimental groups were generated: FF, FC, CF and CC. Tumor incidence and multiplicity were assessed at the following time points 120, 130 and 140 days of age. A panel of genes encoding signal transduction proteins were analyzed in mammary glands at 130 days. RESULTS Mice never exposed to fish oil (CC group) had a significantly higher incidence and multiplicity of mammary gland tumors than mice exposed to fish oil throughout life (FF group). Mice exposed to fish oil during a portion of life (CF or FC) had intermediate tumor incidences and multiplicities. Results also indicate that maternal consumption of fish oil increased the expression of genes associated with immune system activation (Ccl20, Cd5, Il2, Lef1, Lta). CONCLUSIONS Adequate omega-3 fatty acids in the maternal diet may reduce the risk for mammary gland cancer in the offspring. If humans make dietary change by consuming more omega-3 fat instead of corn oil with 0% omega 3 fat, breast cancer may be reduced in the next generation.
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Affiliation(s)
- Gabriela Ion
- Joan C. Edwards School of Medicine, Department of Biomedical Sciences, Marshall University, Huntington, WV, USA. .,Ştefan S. Nicolau Institute of Virology, Center of Immunology, Bucuresti, Romania.
| | - Juliana A Akinsete
- Joan C. Edwards School of Medicine, Department of Biomedical Sciences, Marshall University, Huntington, WV, USA.,Kentucky Christian University, Grayson, KY, USA
| | - Theodore R Witte
- Joan C. Edwards School of Medicine, Department of Biomedical Sciences, Marshall University, Huntington, WV, USA
| | - Marinela Bostan
- Ştefan S. Nicolau Institute of Virology, Center of Immunology, Bucuresti, Romania.
| | - W Elaine Hardman
- Joan C. Edwards School of Medicine, Department of Biomedical Sciences, Marshall University, Huntington, WV, USA
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Abstract
The lack of complete information on the immune response dynamics to infection with severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2) has led to the use of mainly molecular tests such as reverse transcription PCR (RT-PCR) to diagnose Coronavirus 2019 disease (COVID-19). Although remarkable progress has been made in developing effective RT-PCR kits, the lack of specific equipment required to perform this technique in all clinical laboratories limits its widespread use. In the case of COVID-19, these tests can be used for the triage of symptomatic patients, for testing the contacts of confirmed cases, and also for the analysis and monitoring of the situation. Along with molecular tests involving reverse transcription PCR, various laboratory tests can identify the specific anti-viral antibodies or viral antigens. This review seeks to describe the targets and diagnostic methods available or currently in development for SARS-CoV-2 infection, including reverse transcription PCR (RT-PCR), serologic immunoassays (SIA) and the protein microarray method (PMM). Knowing the specific targets and the sensitivity of each assay used for COVID-19 diagnosis can lead to more efficient detection of infected patients and it can provide better management of the pandemic status.
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Affiliation(s)
- Marinela Bostan
- Center of Immunology, "Stefan S. Nicolau" Institute of Virology , Bucharest, Romania.,Immunology Department, "Victor Babes" National Institute of Pathology , Bucharest, Romania
| | - Marius Ataman
- Department of Cellular and Molecular Pathology, "Stefan S. Nicolau" Institute of Virology , Bucharest, Romania
| | | | - Coralia Bleotu
- Department of Cellular and Molecular Pathology, "Stefan S. Nicolau" Institute of Virology , Bucharest, Romania
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Iancu IV, Botezatu A, Plesa A, Huica I, Fudulu A, Albulescu A, Bostan M, Mihaila M, Grancea C, Manda DA, Dobrescu R, Vladoiu SV, Anton G, Badiu CV. Alterations of regulatory factors and DNA methylation pattern in thyroid cancer. Cancer Biomark 2021; 28:255-268. [PMID: 32390600 DOI: 10.3233/cbm-190871] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
PURPOSE DNA methylation plays an important role in thyroid oncogenesis. The aim of this study was to investigate the connection between global and local DNA methylation status and to establish the levels of important DNA methylation regulators (TET family and DNMT1) in thyroid tumours: follicular adenoma-FA, papillary thyroid carcinoma-PTC (classic papillary thyroid carcinoma-cPTC and papillary thyroid carcinoma follicular variant fvPTC). METHODS Global DNA methylation profile in thyroid tumours tissue (41 paired samples) was assessed by 5-methylcytosine and 5-hydroxymethylcytosine levels evaluation (ELISA), along with TETs and DNMT1 genes expression quantification. Also, it was investigated for the first time TET1 and TET2 promoter's methylation in thyroid tumours. BRAF V600E mutation and RET/PTC translocation testing were performed on all investigated samples. In vitro studies upon DNA methylation in K1 thyroid cancer cells were performed with demethylating agents (5-AzaC and vitamin C). RESULTS TET1 and TET2 displayed a significantly reduced gene expression level in PTC, while DNMT1 gene presented a high level of expression. PTC samples presented increased levels of 5-methylcytosine and low levels of 5-hydroxymethylcytosine. 5-methylcytosine levels were associated with TET1/TET2 expression levels. TET1 gene expression was significantly lower in patients positive for BRAF mutation and with RET/PTC rearrangement. TET2 gene was found hypermethylated in thyroid carcinoma patients overall, especially in PTC-follicular variant samples (p= 0.0002), where TET2 gene expression levels were significantly reduced (p= 0.0031). Furthermore, the data indicate for all thyroid cancer patients a good sensitivity (81.08%) and specificity (86.49%) regarding the use of TET1 (p< 0.0001), and TET2 (71.79%, 64.10%, p= 0.0001) hypermethylation as biomarkers for thyroid oncogenesis. CONCLUSIONS These results suggest that TET1/TET2 gene expression and methylation may serve as potential diagnostic tools for thyroid neoplasia. Our study showed that the methylation of TET1 increases in malignant thyroid tumours. fvPTC patients presented lower methylation levels compared to cPTC and could be a discriminatory factor between two cancer types and benign lesions. TET2 is a poorer discriminator between FA and fvPTC, but it can be useful for cPTC identification. K1-cells treated with demethylating agents showed a demethylation effect, especially upon TET2 gene. The cumulative effect of L-AA and 5-AzaC proved to have a potent combined demethylating effect on genes promoter's activation and could open new perspectives for thyroid cancer therapy.
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Affiliation(s)
- Iulia V Iancu
- "Stefan S. Nicolau" Institute of Virology, Bucharest, Romania.,"Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Anca Botezatu
- "Stefan S. Nicolau" Institute of Virology, Bucharest, Romania.,"Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Adriana Plesa
- "Stefan S. Nicolau" Institute of Virology, Bucharest, Romania.,"Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Irina Huica
- "Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Alina Fudulu
- "Stefan S. Nicolau" Institute of Virology, Bucharest, Romania.,"Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Adrian Albulescu
- "Stefan S. Nicolau" Institute of Virology, Bucharest, Romania.,National Institute for Chemical Pharmaceutical Research and Development, Bucharest, Romania
| | - Marinela Bostan
- "Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Mirela Mihaila
- "Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Camelia Grancea
- "Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Dana Alice Manda
- "CI Parhon" National Institute of Endocrinology, Bucharest, Romania.,"Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Ruxandra Dobrescu
- "CI Parhon" National Institute of Endocrinology, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Susana Vilma Vladoiu
- "CI Parhon" National Institute of Endocrinology, Bucharest, Romania.,"Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Gabriela Anton
- "Stefan S. Nicolau" Institute of Virology, Bucharest, Romania.,"Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
| | - Corin Virgil Badiu
- "CI Parhon" National Institute of Endocrinology, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.,"Stefan S. Nicolau" Institute of Virology, Bucharest, Romania
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10
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Maciuca AM, Munteanu AC, Mihaila M, Badea M, Olar R, Nitulescu GM, Munteanu CVA, Bostan M, Uivarosi V. Rare-Earth Metal Complexes of the Antibacterial Drug Oxolinic Acid: Synthesis, Characterization, DNA/Protein Binding and Cytotoxicity Studies. Molecules 2020; 25:molecules25225418. [PMID: 33228104 PMCID: PMC7699381 DOI: 10.3390/molecules25225418] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/14/2020] [Accepted: 11/17/2020] [Indexed: 01/04/2023] Open
Abstract
"Drug repositioning" is a current trend which proved useful in the search for new applications for existing, failed, no longer in use or abandoned drugs, particularly when addressing issues such as bacterial or cancer cells resistance to current therapeutic approaches. In this context, six new complexes of the first-generation quinolone oxolinic acid with rare-earth metal cations (Y3+, La3+, Sm3+, Eu3+, Gd3+, Tb3+) have been synthesized and characterized. The experimental data suggest that the quinolone acts as a bidentate ligand, binding to the metal ion via the keto and carboxylate oxygen atoms; these findings are supported by DFT (density functional theory) calculations for the Sm3+ complex. The cytotoxic activity of the complexes, as well as the ligand, has been studied on MDA-MB 231 (human breast adenocarcinoma), LoVo (human colon adenocarcinoma) and HUVEC (normal human umbilical vein endothelial cells) cell lines. UV-Vis spectroscopy and competitive binding studies show that the complexes display binding affinities (Kb) towards double stranded DNA in the range of 9.33 × 104 - 10.72 × 105. Major and minor groove-binding most likely play a significant role in the interactions of the complexes with DNA. Moreover, the complexes bind human serum albumin more avidly than apo-transferrin.
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Affiliation(s)
- Ana-Madalina Maciuca
- Department of General and Inorganic Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia St, 020956 Bucharest, Romania;
| | - Alexandra-Cristina Munteanu
- Department of General and Inorganic Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia St, 020956 Bucharest, Romania;
- Correspondence: (A.-C.M.); (V.U.); Tel.: +4-021-318-0742 (V.U.); Fax: +4-021-318-0750 (V.U.)
| | - Mirela Mihaila
- Center of Immunology, Stefan S. Nicolau Institute of Virology, 285 Mihai Bravu Ave, 030304 Bucharest, Romania; (M.M.); (M.B.)
| | - Mihaela Badea
- Department of Inorganic Chemistry, Faculty of Chemistry, University of Bucharest, 90-92 Panduri Str, 050663 Bucharest, Romania; (M.B.); (R.O.)
| | - Rodica Olar
- Department of Inorganic Chemistry, Faculty of Chemistry, University of Bucharest, 90-92 Panduri Str, 050663 Bucharest, Romania; (M.B.); (R.O.)
| | - George Mihai Nitulescu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Str, 020956 Bucharest, Romania;
| | - Cristian V. A. Munteanu
- Department of Bioinformatics and Structural Biochemistry, Institute of Biochemistry of the Romanian Academy (IBRA), 296 Spl. Independenţei, 060031 Bucharest, Romania;
| | - Marinela Bostan
- Center of Immunology, Stefan S. Nicolau Institute of Virology, 285 Mihai Bravu Ave, 030304 Bucharest, Romania; (M.M.); (M.B.)
| | - Valentina Uivarosi
- Department of General and Inorganic Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia St, 020956 Bucharest, Romania;
- Correspondence: (A.-C.M.); (V.U.); Tel.: +4-021-318-0742 (V.U.); Fax: +4-021-318-0750 (V.U.)
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11
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Bostan M, Petrică-Matei GG, Radu N, Hainarosie R, Stefanescu CD, Diaconu CC, Roman V. The Effect of Resveratrol or Curcumin on Head and Neck Cancer Cells Sensitivity to the Cytotoxic Effects of Cisplatin. Nutrients 2020; 12:nu12092596. [PMID: 32859062 PMCID: PMC7551591 DOI: 10.3390/nu12092596] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/20/2020] [Accepted: 08/21/2020] [Indexed: 12/20/2022] Open
Abstract
Natural compounds can modulate all three major phases of carcinogenesis. The role of the natural compounds such as resveratrol (RSV) and curcumin (CRM) in modulation of anticancer potential of platinum-based drugs (CisPt) is still a topic of considerable debate. In order to enhance head and neck cancer (HNSCC) cells’ sensitivity to the cytotoxic effects of CisPt combined treatments with RSV or CRM were used. The study aim was to evaluate how the RSV or CRM associated to CisPt treatment modulated some cellular processes such as proliferation, P21 gene expression, apoptotic process, and cell cycle development in HNSCC tumor cell line (PE/CA-PJ49) compared to a normal cell line (HUVEC). The results showed that RSV or CRM treatment affected the viability of tumor cells more than normal cells. These natural compounds act against proliferation and sustain the effects of cisplatin by cell cycle arrest, induction of apoptosis and amplification of P21 expression in tumor cells. In conclusion, using RSV or CRM as adjuvants in CisPt therapy might have a beneficial effect by supporting the effects induced by CisPt.
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Affiliation(s)
- Marinela Bostan
- Center of Immunology, Stefan S. Nicolau’ Institute of Virology, 030304 Bucharest, Romania;
- Department of Immunology, Victor Babeș’ National Institute of Pathology, 050096 Bucharest, Romania
| | | | - Nicoleta Radu
- Department of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Βucharest, Romania;
- Biotechnology Department, National Institute for Chemistry and Petrochemistry R&D of Bucharest, 060021 Bucharest, Romania
| | - Razvan Hainarosie
- Otorhinolaryngology and Head and Neck Surgery Department-University of Medicine and Pharmacy “Carol Davila”, 020021 Bucharest, Romania; (R.H.); (C.D.S.)
| | - Cristian Dragos Stefanescu
- Otorhinolaryngology and Head and Neck Surgery Department-University of Medicine and Pharmacy “Carol Davila”, 020021 Bucharest, Romania; (R.H.); (C.D.S.)
| | - Carmen Cristina Diaconu
- Department of Cellular and Molecular Pathology, Stefan S. Nicolau Institute of Virology, 030304 Bucharest, Romania
- Correspondence: (C.C.D.); (V.R.)
| | - Viviana Roman
- Center of Immunology, Stefan S. Nicolau’ Institute of Virology, 030304 Bucharest, Romania;
- Correspondence: (C.C.D.); (V.R.)
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12
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Bostan M, Petrică-Matei GG, Ion G, Radu N, Mihăilă M, Hainăroşie R, Braşoveanu LI, Roman V, Constantin C, Neagu MT. Cisplatin effect on head and neck squamous cell carcinoma cells is modulated by ERK1/2 protein kinases. Exp Ther Med 2019; 18:5041-5051. [PMID: 31798724 PMCID: PMC6880449 DOI: 10.3892/etm.2019.8139] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 10/03/2019] [Indexed: 02/06/2023] Open
Abstract
The extracellular signal-regulated kinases (ERKs) are key transducers of the extracellular signals into intracellular responses and represent major molecular players in tumorigenesis. The aim of this study was to determine how curcumin (CRM) used as an adjuvant supports the apoptotic process induced by a single chemical agent treatment (cisplatin-CisPT) on two head and neck squamous cell carcinoma cell lines (FaDu and PE/CA-PJ49) and the involvement of ERK1/2 and/or p53 activation in this process. Data have shown that the CisPt effect is potentiated by CRM. CRM induced an increase of p53 protein phosphorylation in both cell lines. CisPt decreased p53 protein phosphorylation in FaDu cells, but increased it in PE/CA-PJ49 cells. Data showed that the constitutive expression of activated ERK1/2 protein-kinase was different in the two analyzed tumor cell lines. ERK1/2 activation status was essential for both cell processes, proliferation and apoptosis induced by CisPt and/or CRM treatment on squamous cell carcinoma cells. Our data suggest that p53 phosphorylation in the apoptotic process induced by CRM treatment might require the involvement of ERK1/2. In this regard the CisPt treatment suggested that p53 phosphorylation is ERK1/2 independent in FaDu cells having a p53 gene deletion and ERK1/2 dependent in PE/CA-PJ49 cells having a p53 gene amplification. Moreover, in both tumor cell lines our results support the involvement of p53 phosphorylation-ERK1/2 activation-dependent in the apoptosis induced by combined treatments (CisPt and CRM). The use of CRM as adjuvant could increase the efficiency of chemotherapy by modulating cellular activation processes of ERK1/2 signaling pathways. In conclusion, the particular mode of intervention by which ERK1/2 might influence cell proliferation and/or apoptosis processes depends on the type of therapeutic agent, the cells' particularities, and the activation status of the ERK1/2.
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Affiliation(s)
- Marinela Bostan
- ‘Stefan S. Nicolau’ Institute of Virology, Center of Immunology, 030304 Bucharest, Romania
- Department of Immunology, ‘Victor Babeș’ National Institute of Pathology, 050096 Bucharest, Romania
| | | | - Gabriela Ion
- ‘Stefan S. Nicolau’ Institute of Virology, Center of Immunology, 030304 Bucharest, Romania
| | - Nicoleta Radu
- Department of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Βucharest, Romania
- Biotechnology Department and National Institute for Chemistry and Petrochemistry R&D of Bucharest, 060021 Bucharest, Romania
| | - Mirela Mihăilă
- ‘Stefan S. Nicolau’ Institute of Virology, Center of Immunology, 030304 Bucharest, Romania
| | - Răzvan Hainăroşie
- ‘Prof. Dr. Dorin Hociotă’ Institute of Phonoaudiology and Functional ENT Surgery, 061344 Bucharest, Romania
| | | | - Viviana Roman
- ‘Stefan S. Nicolau’ Institute of Virology, Center of Immunology, 030304 Bucharest, Romania
| | - Carolina Constantin
- Department of Immunology, ‘Victor Babeș’ National Institute of Pathology, 050096 Bucharest, Romania
| | - Monica Teodora Neagu
- Department of Immunology, ‘Victor Babeș’ National Institute of Pathology, 050096 Bucharest, Romania
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13
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Botezatu A, Iancu IV, Plesa A, Manda D, Popa O, Bostan M, Mihaila M, Albulescu A, Fudulu A, Vladoiu SV, Huica I, Dobrescu R, Anton G, Badiu C. Methylation of tumour suppressor genes associated with thyroid cancer. Cancer Biomark 2019; 25:53-65. [PMID: 31006665 DOI: 10.3233/cbm-182265] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Thyroid carcinoma is the most common endocrine malignancy worldwide. Changes in DNA methylation can cause silencing of normally active genes, especially tumour suppressor genes (TSG) or activation of normally silent genes. OBJECTIVE The aim of this study is to evaluate the degree of promoter methylation for a panel of markers for thyroid neoplasms and to establish their relationship with thyroid oncogenesis. METHODS To generate a comprehensive DNA methylation signature of TSGs involved in thyroid neoplasia, we use Human TSG EpiTect Methyl II Signature PCR Array-Qiagen for 24 samples (follicular adenomas and papillary thyroid carcinomas) compared with normal thyroid tissue. We extended the evaluation for three TSGs (TP73, WIF1, PDLIM4) using qMS-PCR. Statistical analysis was performed with GraphPad Prism. RESULTS We noted four important genes NEUROG1, ESR1, RUNX3, MLH1, which presented methylated promoter in tumour samples compared to normal. We found new characteristic of thyroid tumours: methylation of TP73, WIF1 and PDLIM4 TSGs, which can contribute to thyroid neoplasia. A significant correlation between BRAF V600E mutation and RET/PTC rearrangements with TIMP3 and CDH13, RARB methylation, respectively was observed. CONCLUSIONS TSGs promoter hypermethylation is a hallmark of cancer and a test that uses methylation quantification method is suitable for diagnosis and prognosis of thyroid cancer.
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Affiliation(s)
- Anca Botezatu
- 'Stefan S. Nicolau' Institute of Virology, Bucharest, Romania
| | - Iulia V Iancu
- 'Stefan S. Nicolau' Institute of Virology, Bucharest, Romania
| | - Adriana Plesa
- 'Stefan S. Nicolau' Institute of Virology, Bucharest, Romania
| | - Dana Manda
- 'CI Parhon' National Institute of Endocrinology, Bucharest, Romania
| | - Oana Popa
- 'CI Parhon' National Institute of Endocrinology, Bucharest, Romania
| | - Marinela Bostan
- 'Stefan S. Nicolau' Institute of Virology, Bucharest, Romania
| | - Mirela Mihaila
- 'Stefan S. Nicolau' Institute of Virology, Bucharest, Romania
| | - Adrian Albulescu
- 'Stefan S. Nicolau' Institute of Virology, Bucharest, Romania.,National Institute for Chemical pharmaceutical Research and Development, Calea Vitan, Romania
| | - Alina Fudulu
- 'Stefan S. Nicolau' Institute of Virology, Bucharest, Romania
| | - Susana V Vladoiu
- 'CI Parhon' National Institute of Endocrinology, Bucharest, Romania
| | - Irina Huica
- 'Stefan S. Nicolau' Institute of Virology, Bucharest, Romania
| | - Ruxandra Dobrescu
- 'CI Parhon' National Institute of Endocrinology, Bucharest, Romania.,'Carol Davila' University of Medicine and Pharmacy, Bucharest, Romania
| | - Gabriela Anton
- 'Stefan S. Nicolau' Institute of Virology, Bucharest, Romania
| | - Corin Badiu
- 'CI Parhon' National Institute of Endocrinology, Bucharest, Romania.,'Carol Davila' University of Medicine and Pharmacy, Bucharest, Romania
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14
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Subaşi M, Erduran MN, Bostan M, Reyhancan IA, Gültekin E, Tarcan G, Ozbir Y, Durusoy A. (n, α) Reaction Cross Sections of44Ca,45Sc, and51V Nuclei from 13.6 to 14.9 MeV. NUCL SCI ENG 2017. [DOI: 10.13182/nse98-a2004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Subaşi
- Cekmece Nuclear Research and Training Center, P.O. Box 1, 34831 Atatürk Hava Limani Istanbul, Turkey
| | - M. N. Erduran
- Cekmece Nuclear Research and Training Center, P.O. Box 1, 34831 Atatürk Hava Limani Istanbul, Turkey
| | - M. Bostan
- Cekmece Nuclear Research and Training Center, P.O. Box 1, 34831 Atatürk Hava Limani Istanbul, Turkey
| | - I. A. Reyhancan
- Cekmece Nuclear Research and Training Center, P.O. Box 1, 34831 Atatürk Hava Limani Istanbul, Turkey
| | - E. Gültekin
- Cekmece Nuclear Research and Training Center, P.O. Box 1, 34831 Atatürk Hava Limani Istanbul, Turkey
| | - G. Tarcan
- Cekmece Nuclear Research and Training Center, P.O. Box 1, 34831 Atatürk Hava Limani Istanbul, Turkey
| | - Y. Ozbir
- Cekmece Nuclear Research and Training Center, P.O. Box 1, 34831 Atatürk Hava Limani Istanbul, Turkey
| | - A. Durusoy
- Yildiz Technical University, Physics Department, Şişli-Istanbul, Turkey
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15
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Subasi M, Bostan M, Erduran MN, Durusoy A, Gultekin E, Tarcan G, Ozbir Y. Measurement of 50Ti(n, α)47Ca Reaction Cross Sections for 13.6- to 14.9-MeV Neutrons. NUCL SCI ENG 2017. [DOI: 10.13182/nse96-a24177] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Subasi
- Cekmece Nuclear Research and Training Centre, Department of Physics P.O. Box 1, Havaalani, 34831 Istanbul, Turkey
| | - M. Bostan
- Cekmece Nuclear Research and Training Centre, Department of Physics P.O. Box 1, Havaalani, 34831 Istanbul, Turkey
| | - M. N. Erduran
- Cekmece Nuclear Research and Training Centre, Department of Physics P.O. Box 1, Havaalani, 34831 Istanbul, Turkey
| | - A. Durusoy
- Yildiz Technical University, Department of Physics, Sisli, Istanbul, Turkey
| | - E. Gultekin
- Cekmece Nuclear Research and Training Centre, Department of Physics P.O. Box 1, Havaalani, 34831 Istanbul, Turkey
| | - G. Tarcan
- Cekmece Nuclear Research and Training Centre, Department of Physics P.O. Box 1, Havaalani, 34831 Istanbul, Turkey
| | - Y. Ozbir
- Cekmece Nuclear Research and Training Centre, Department of Physics P.O. Box 1, Havaalani, 34831 Istanbul, Turkey
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16
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Petrică-Matei GG, Iordache F, Hainăroşie R, Bostan M. Characterization of the tumor cells from human head and neck cancer. Rom J Morphol Embryol 2016; 57:791-799. [PMID: 27833973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Although it is very difficult to establish a correlation between the behavior of tumor cells in vitro and in vivo tumors, in this study we tried to analyze some functions of the tumor cells isolated from head and neck tumor fragments, comparatively with the tumor cell cultures, hoping that the results could help the clinician to choose optimal treatment for head and neck cancer patients. The aim of the present study was to evaluate the expression of p53 protein, the apoptosis process and the cell cycle parameters in the cell cultures of head and neck carcinoma obtained from fragments of tumor excised from patients. Using ELISA assay and flow cytometry methods we analyzed the p53 protein expression, distribution of the cell cycle phases and the level of apoptosis in the tumor cells which were immediately isolated from the tumor fragments, as well as in the ones that were subsequently passed in culture several times. Our results showed that p53 protein expression was weak in four (33.3%) patients, moderate in three (25%) patients and intense in five (41.6%) patients. Our data showed that both tumor cells isolated from the tumor fragments (passage 0), as well as cell cultures at passage 5 had the percentage of S-phase of the cellular cycle higher than 20%, suggesting that tumors have high proliferative activity. The tumor cells cultures have a small percentage of apoptosis that may reflect a biological aggressive tumor character. In conclusion, these data may improve the diagnostic protocols and help to an efficient monitoring of therapy.
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17
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Kusoglu A, Stuchbery AE, Georgiev G, Brown BA, Goasduff A, Atanasova L, Balabanski DL, Bostan M, Danchev M, Detistov P, Gladnishki KA, Ljungvall J, Matea I, Radeck D, Sotty C, Stefan I, Verney D, Yordanov DT. Magnetism of an excited self-conjugate nucleus: precise measurement of the g factor of the 2(1)(+) state in (24)Mg. Phys Rev Lett 2015; 114:062501. [PMID: 25723214 DOI: 10.1103/physrevlett.114.062501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Indexed: 06/04/2023]
Abstract
A precise measurement of the g factor of the first-excited state in the self-conjugate (N=Z) nucleus (24)Mg is performed by a new time-differential recoil-in-vacuum method based on the hyperfine field of hydrogenlike ions. Theory predicts that the g factors of such states, in which protons and neutrons occupy the same orbits, should depart from 0.5 by a few percent due to configuration mixing and meson-exchange effects. The experimental result, g=0.538±0.013, is in excellent agreement with recent shell-model calculations and shows a departure from 0.5 by almost 3 standard deviations, thus achieving, for the first time, the precision and accuracy needed to test theory. Proof of the new method opens the way for wide applications including measurements of the magnetism of excited states of exotic nuclei produced as radioactive beams.
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Affiliation(s)
- A Kusoglu
- CSNSM, CNRS/IN2P3; Université Paris-Sud, UMR8609, F-91405 Orsay-Campus, France and Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, 34134 Istanbul, Turkey
| | - A E Stuchbery
- Department of Nuclear Physics, RSPE, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - G Georgiev
- CSNSM, CNRS/IN2P3; Université Paris-Sud, UMR8609, F-91405 Orsay-Campus, France
| | - B A Brown
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - A Goasduff
- CSNSM, CNRS/IN2P3; Université Paris-Sud, UMR8609, F-91405 Orsay-Campus, France
| | - L Atanasova
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
| | - D L Balabanski
- ELI-NP, Horia Hulubei National Institute of Physics and Nuclear Engineering, 077125 Magurele, Romania
| | - M Bostan
- Department of Physics, Faculty of Science, Istanbul University, Vezneciler/Fatih, 34134 Istanbul, Turkey
| | - M Danchev
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria
| | - P Detistov
- Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
| | - K A Gladnishki
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria
| | - J Ljungvall
- CSNSM, CNRS/IN2P3; Université Paris-Sud, UMR8609, F-91405 Orsay-Campus, France
| | - I Matea
- IPN, Orsay, CNRS/IN2P3, Université Paris-Sud, F-91406 Orsay Cedex, France
| | - D Radeck
- Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Köln, Germany
| | - C Sotty
- CSNSM, CNRS/IN2P3; Université Paris-Sud, UMR8609, F-91405 Orsay-Campus, France
| | - I Stefan
- IPN, Orsay, CNRS/IN2P3, Université Paris-Sud, F-91406 Orsay Cedex, France
| | - D Verney
- IPN, Orsay, CNRS/IN2P3, Université Paris-Sud, F-91406 Orsay Cedex, France
| | - D T Yordanov
- IPN, Orsay, CNRS/IN2P3, Université Paris-Sud, F-91406 Orsay Cedex, France and Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany and CERN European Organization for Nuclear Research, Physics Department, CH-1211 Geneva 23, Switzerland
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18
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Brasoveanu L, Hotnog C, Bostan M, Matei G, Hotnog D, Gruia M, Mihaila M. P22. Immunomodulation induced by resveratrol or genistein on proliferation and apoptosis of tumour colon cells. J Immunother Cancer 2014. [PMCID: PMC4072252 DOI: 10.1186/2051-1426-2-s2-p13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
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19
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Hotnog D, Mihăilă M, Lancu IV, Matei GG, Hotnog C, Anton G, Bostan M, Braşoveanu LI. Resveratrol modulates apoptosis in 5-fluorouracyl treated colon cancer cell lines. Roum Arch Microbiol Immunol 2013; 72:255-264. [PMID: 24923109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Since cancer is a cellular disease, it is essential to identify the development stages and use the information in the prediction, prevention, early detection and design of drug targets. Colon cancer represents a malignancy with high incidence and mortality throughout the world, its etiology involving many genetic, immunological and biochemical factors. 5-fluorouracyl (5-FU) is one of the most effective anti-cancer agents used in the treatment of colorectal cancers, but tumor chemoresistance is a major limiting factor of its use. In order to choose the most effective chemotherapeutic doses of 5-FU, and thereby diminish the side-effects, we tried to modulate the anticancer properties of 5-FU by adding dietary natural compounds. The study focused on the role of natural compounds as resveratrol (RSV) in sensitization of LoVo human colon adenocarcinoma cell line to 5-FU action. Real-time cell analysis (RTCA) by xCELLigence System was used to continuously monitor the cytotoxic effects of drug treatments on LoVo cells. RTCA allowed us to choose the proper concentrations for further end-point assays, such as flow-cytometry techniques used for the evaluation of apoptotic events, progression through cell cycle phases or nuclear antigen expression of compound-treated LoVo cells. Data obtained showed additional effects of RSV to 5-FU treatments on the increase ofapoptotic events, and suggested alternative approaches to obtain a stronger antitumor response, and diminished side-effects when low concentrations of anti-cancer drugs are used. Modulation of the mechanisms of programmed cell death process seem to be of great importance for malignant transformation, and therefore for anti-cancer therapeutic approaches.
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Uydu HA, Bostan M, Yilmaz A, Demir A, Atak M, Satiroglu Ö, Temiz A, Cicek Y, Erdogan T, Cetin M, Canga A. Comparision of inflammatory biomarkers for detection of coronary stenosis in patients with stable coronary artery disease. Eur Rev Med Pharmacol Sci 2013; 17:112-118. [PMID: 23329531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND The objective of the current study was to evaluate the role of various inflammatory biomarkers in detection of coronary stenosis in patients with stable coronary artery disease (CAD) and healthy people. METHODS A total of 111 patients with stable coronary artery disease, and 66 healthy subjects were enrolled in the study. Serum levels of lipoprotein-associated-phospholipase A2 (Lp-PLA2), high-sensitivity C-reactive protein (hs-CRP), and myeloperoxidase (MPO) were measured to compare patient and control groups. RESULTS Baseline characteristics were similar between healthy and patient groups, with the exception of age. ANCOVA and log-transformed data of inflammatory biomarkers revealed that, Lp-PLA2 (p < 0.001) and hs-CRP (p < 0.05) levels in all patient groups were significantly higher than in the control group. Conversely, there was no significant difference in MPO levels among groups. CONCLUSIONS In stable CAD patients, serum Lp-PLA2 levels are more compatible than hs-CRP and MPO levels in the detection of coronary stenosis.
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Affiliation(s)
- H A Uydu
- Department of Chemistry, Faculty of Art and Science, Recep Tayyp Erdogan University, Rize, Turkey
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Satiroglu O, Bostan M, Uzun H, Cetin M, Bozkurt E. Severity of coronary artery disease and prostate-specific antigen relationship in men. Eur Rev Med Pharmacol Sci 2012; 16:2078-2081. [PMID: 23280022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECTIVE Prostate-specific antigen (PSA) is a well-known prostate cancer marker. Recent studies have shown that serum PSA levels can fluctuate in response to cardiovascular stress. In this study we aimed to determine if serum PSA levels correlate with the presence and stages of coronary artery disease (CAD) and whether PSA can be used as a marker for the diagnosis and severity of CAD. PATIENTS AND METHODS This was a retrospective chart review of male patients who underwent coronary angiography for suspected CAD. A total of 100 patients with angiographic data and baseline serum PSA measurements were included. Patients with previous history of coronary angiography, stent implantation, benign prostate hypertrophy, known prostate cancer or prostatitis were excluded. RESULTS The mean age was 57±10 years. Coronary angiography results were normal in 13%, non-obstructive CAD (non-critical plaque formation) in 16%, one-vessel disease in 21%, two-vessel disease in 30% and multi-vessel disease in 20%. Mean values of total and free serum PSA were 1.4±1.3 ng/mL and 0.4±0.4 ng/mL, respectively. Although there was an increasing trend of PSA with more advanced stages of CAD, no significant relationship was established (p > 0.05). Patients with hypertension had significantly elevated total and free serum PSA compared to normotensives. There is no comparison of PSA levels between patients with CAD and without CAD. CONCLUSIONS Our study suggests that there is no direct relationship between increasing levels of PSA and stage of CAD. Thus, PSA level does not appear to be a suitable marker for diagnosis or severity of CAD.
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Affiliation(s)
- O Satiroglu
- Department of Cardiology, Rize University Faculty of Medicine, Rize, Turkey.
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Kiriş A, Bostan M, Korkmaz L, Ağaç M, Acar Z, Kaplan Ş, Çelik Ş. PP-045 CAROTID-FEMORAL PULSE WAVE VELOCITY IN PATIENTS WITH ISOLATED CORONARY ARTERY ECTASIA: AN OBSERVATIONAL STUDY. Int J Cardiol 2012. [DOI: 10.1016/s0167-5273(12)70278-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Brasoveanu L, Hotnog C, Roman V, Hirt M, Bostan M, Cinca S, Puiu L. Effect of stimuli treatment on proliferation and apoptosis of tumor cells. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)71698-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Kolahi A, Hoviattalab M, Rezaeian T, Alizadeh M, Bostan M, Mokhtarzadeh H. Design of a marker-based human motion tracking system. Biomed Signal Process Control 2007. [DOI: 10.1016/j.bspc.2007.02.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Reyhancan I, Bostan M, Durusoy A, Elmalı A, Baykal A, Özbir Y. Measurements of isomeric cross sections for (n,2n) reaction on 140Ce, 142Nd and 144Sm isotopes around 14 MeV. ANN NUCL ENERGY 2003. [DOI: 10.1016/s0306-4549(03)00100-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Bostan M, Galatiuc C, Hirt M, Constantin MC, Brasoveanu LI, Iordachescu D. Phospholipase A2 modulates respiratory burst developed by neutrophils in patients with rheumatoid arthritis. J Cell Mol Med 2003; 7:57-66. [PMID: 12767262 PMCID: PMC6740302 DOI: 10.1111/j.1582-4934.2003.tb00203.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Activated by bacterial peptides, phorbol esters, calcium ionophores and other agonists, neutrophils (PMNs) release the proinflammatory mediator, arachidonic acid (AA) via the intervention of phospholipase A(2) (PLA(2)). AA may play an essential role in activation of NADPH-oxidase, which is involved in the generation of superoxide anion by neutrophils. The present study is focused on the involvement of PLA(2) in the respiratory burst developed by PMNs isolated from patients with rheumatoid arthritis (RA). PLA(2) exists in very high levels in diseases such as rheumatoid arthritis and may cause acute inflammatory and proliferative changes in synovial structures. The respiratory burst was evaluated as superoxide anion release, using an amplified chemiluminescence method. The assays were performed using PMNs untreated or treated with different doses of stimulatory reagents (phorbol 12-myristate-13-acetate (PMA), calcium ionophore (A23187)). Our data suggested that PMA stimulated the production of superoxide anion in a dose-response manner, as compared with A23187, which did not induce a significant release of superoxide anion in PMNs-RA. The exogenous addition of AA significantly amplified the superoxide anion release by PMNs-RA stimulated with PMA and to a lesser extent, by PMNs stimulated with A23187. AA has also reversed the inhibitory effect of arachidonyl-trifluorometylketone and E-6-(bromomethylene)tetrahydro-3-(1-naphthalenyl)2H-pyran-2-one (BEL) on the superoxide anion release by PMNs-RA. In conclusion, the differential responses to these two agents suggested that different isoforms of PLA(2) were activated by A23187 or PMA, and support the idea that activation of these different PLA(2) served distinct functions of PMNs. Therefore, the inhibition of PLA(2) enzymes might be of great importance in the immunotherapy of rheumatoid arthritis.
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Affiliation(s)
- Marinela Bostan
- Center of Immunology, Stefan S. Nicolau Institute of Virology, Bucharest, Romania.
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Bostan M, Gültekin E. Cross-section measurements for the (n,p) and (n,α) reactions on 23Na and for the (n,p) reaction on 26Mg at the neutron energies from 13.6 to 14.9 MeV. ANN NUCL ENERGY 2002. [DOI: 10.1016/s0306-4549(02)00028-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bostan M, Constantin MC, Nicolau A, Hirt M, Galatiuc C, Matei I, Braşoveanu LI, Iordăchescu D. Study of chemotactic activity developed by neutrophils from rheumatoid arthritis patients. Roum Arch Microbiol Immunol 2002; 61:243-58. [PMID: 15055258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Neutrophils are the predominant cells accumulated in the synovial fluid (SF) of rheumatoid arthritis (RA) patients. Accumulation of neutrophils may be regarded as a possible way by which neutrophils exert cytotoxic functions. The aim of the present study was to analyze the chemotactic response of neutrophils (PMNs) isolated from the peripheral blood or SF of patients with RA by performing the chemotaxis assay, in which N-formyl-methionyl-leucyl-phenylalanine (FMLP) was used as chemotactic agent. Our results showed that FMLP induced response of peripheral blood neutrophils from 12 patients with RA was similar with the response of 15 healthy controls. A decreased chemotactic response to FMLP was, however, observed in PMNs isolated from the SF of RA patients as comlipared with peripheral blood cells. Therefore, this defective chemotactic ability of neutrophil, was inversely correlated with the number of infiltrating cells in SF. These results indicate that chemotactic ability of neutrophils may be reduced after migration to the SF. Because PMNs chemotaxis in vivo has likely occurred in the presence of serum or SF, we tried to simulate the same conditions in vitro. Therefore, we analyzed the effect of serum or SF on the RA-PMNs chemotaxis. Heat-inactivated serum produced a marked reduction of chemotactic activity developed by PMNs isolated from patients with RA. Notably, a significant increase of chemotactic activity was observed when FMLP and serum stimuli were used together, as compared with the same stimuli used alone. The results suggested that complement activation might interfere with neutrophils chemotaxis. SF amplifies the chemotactic activity of PMNs isolated from peripheral blood of RA patients, but does not affect the chemotaxis developed by PMNs isolated from SF. The data might suggest that several components of SF (IL-8, leukotrien B4, thrombin, platelet-activating factor, etc.) could serve as a potent stimulus for recruitment of neutrophils from periphery into the RA joint. In conclusion, serum or SF components seem to contribute to chemotaxis of neutrophils and play a role in differential killing of PMNs and incidence of infection.
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Affiliation(s)
- Marinela Bostan
- St. S. Nitcolau Institute of Virology Center of Immunology, Bucharest, Romania.
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Bostan M, Brasoveanu LI, Livescu A, Manda G, Neagu M, Iordachescu D. Effects of synovial fluid on the respiratory burst of granulocytes in rheumatoid arthritis. J Cell Mol Med 2001; 5:188-94. [PMID: 12067501 PMCID: PMC6738123 DOI: 10.1111/j.1582-4934.2001.tb00152.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Neutrophil infiltration in the synovia is an important feature of the local inflammatory process associated with rheumatoid arthritis. The present study is focused on the effects exerted in vitro by the synovial fluid versus serum on the respiratory burst of granulocytes isolated either from blood or synovial fluid of rheumatoid arthritis patients. The respiratory burst was evaluated as superoxide anion release, by lucigenin-amplified chemiluminescence. Our data show that the respiratory burst of granulocytes isolated from rheumatoid arthritis patients might trigger a significant oxidative stress both in periphery and the inflamed joint. These cells show no pathological pattern when activated in vitro by the chemotactic peptide fMLP, heterologous synovial fluid or serum. Acellular synovial fluid amplifies the superoxide anion release induced by fMLP more than the corresponding serum, indicating that a bacterial infection in the joint might enhance the oxidative damage in the inflamed synovium.
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Affiliation(s)
- M Bostan
- Center of Immunology, Institute of Virology St. S. Nicolau, Bucharest, Romania.
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Gültekin E, Bostan M, Erduran M, Subaşi M, Şirin M. Cross-section measurements for short-lived isotopes of 46Ti, 75As and 92Mo at the neutron energies from 13.6 to 14.9 MeV. ANN NUCL ENERGY 2001. [DOI: 10.1016/s0306-4549(00)00023-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Balabanski DL, Minkova A, Rainovski GI, Danchev M, Erduran N, Akkus B, Bostan M, Gurdal G, Yalcinkaya M, Beetge R, Fearick RW, Mabala G, Roux D, Whittaker W, Babu BRS, Lawrie JJ, Naguleswaran S, Newman RT, Pilcher JV, Smit FD, Sharpey-Schafer JF. Study of Mass A=130 Fission Fragments in the 14n + 238U Reaction at 10 MeV/A. The Nucleus 2000. [DOI: 10.1007/978-1-4615-4257-5_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Erem C, Değer O, Bostan M, Orem A, Sönmez M, Ulusoy S, Telatar M. Plasma lipoprotein (a) levels in Turkish NIDDM patients with and without vascular diabetic complications. Acta Cardiol 1999; 54:203-7. [PMID: 10511896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
OBJECTIVE Plasma concentrations of lipoprotein (a) [Lp(a)], an independent risk factor for atherosclerosis, were measured in 59 non-insulin-dependent diabetes mellitus (NIDDM) patients with and without vascular complications, and 21 non-diabetic healthy subjects. RESULTS The plasma log Lp(a) levels were found to be significantly increased in the NIDDM patients (1.40 +/- 0.36) compared with the healthy subjects (1.02 +/- 0.53; p < 0.05). Plasma Lp(a) levels in NIDDM patients with diabetic vascular complications (1.51 +/- 0.27) were significantly higher than those of the NIDDM patients without diabetic vascular complications (1.23 +/- 0.43) and healthy subjects (p < 0.05). There were significant correlations between plasma log Lp(a) levels and apolipoprotein B (apo B) in all NIDDM patients (r: 0.68, p < 0.05). No correlation was observed between Lp(a) levels and age, sex, duration of diabetes, fasting blood glucose, haemoglobin Alc, the mode of treatment, triglycerides, total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and apolipoprotein Al levels in all patients. CONCLUSIONS It was concluded that Lp(a) was a risk factor for angiopathy in NIDDM patients and the patients who have a high plasma Lp(a) concentration should be kept under strict glycaemic control.
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Affiliation(s)
- C Erem
- Karadeniz Technical University Faculty of Medicine, Department of Internal Medicine, Trabzon, Turkey
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Erem C, Değer O, Bostan M, Orem A, Sönmez M, Ulusoy S, Telatar M. Plasma lipoprotein (a) concentrations in hypothyroid, euthyroid and hyperthyroid subjects. Acta Cardiol 1999; 54:77-81. [PMID: 10378018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
OBJECTIVE Alterations of the lipid profile are a well known phenomenon in thyroid dysfunction. Thyroid hormones regulate lipid metabolism through various mechanisms, but a key role is played by the LDL receptor pathway. Thyroid hormone influence on lipoprotein (a) [Lp(a)] metabolism is known. METHODS AND RESULTS Therefore we studied Lp(a) concentrations in a group of 16 hypothyroid patients and in a group of 22 hyperthyroid patients. Twenty-six euthyroid subjects were used as a control group. Plasma Lp(a) concentrations in hyperthyroid patients (23.2 +/- 28.1 mg/dl) were significantly lower than those of the hypothyroid patients (27.1 +/- 19.2, p < 0.05). There were negative correlations between plasma Lp(a) concentrations and total T4 levels in patients with hyperthyroidism and hypothyroidism (r: -0.49, p < 0.05; r: -0.40, p < 0.05, respectively). Also, decreased HDL-C levels, increased LDL-C, total cholesterol and apo B levels in the hypothyroid patients according to euthyroid subjects were observed (p < 0.05). Decreased LDL-C levels, increased HDL-C and apo Al levels in the hyperthyroid patients according to euthyroid subjects were determined (p < 0.05). CONCLUSIONS It was concluded that plasma Lp(a) concentrations increase in hypothyroid patients and the observed relationships between thyroid status and Lp(a) levels can be explained by impaired catabolism of apo B and Lp(a) in hypothyroidism.
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Affiliation(s)
- C Erem
- Department of Internal Medicine, Karadeniz Technical University Faculty of Medicine, Turkey
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Neagu M, Manda G, Livescu A, Bostan M, Bancu A, Popescu L. Calcium ions modulate the respiratory burst of human polymorphonuclear cells. Immunol Lett 1997. [DOI: 10.1016/s0165-2478(97)85472-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Erem C, Kulan K, Tuncer C, Bostan M, Mocan Z, Komsuoğlu B. Cardiac arrhythmias in patients on maintenance hemodialysis. Acta Cardiol 1997; 52:25-36. [PMID: 9139519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Cardiac arrhythmias were evaluated in 20 patients (14 males and 6 females; 38.2 +/- 17.6 years) undergoing regular maintenance hemodialysis (HD) for chronic and renal failure (CRF) by Holter ECG monitoring a 24-hour period. Ventricular arrhythmias (VAs) were observed in 18 of 20 patients (90%). Sporadic VAs were recorded in 75% and frequent VAs in 15% of 20 patients. It was found that VAs were correlated with an increase in duration of CRF, but there was no relation with age, duration of HD, frequency of HD, body surface area, the levels of serum sodium, chloride creatinine, phosphorous (P), magnesium, free calcium (Ca), and free fatty acids, Ca x P, cardiothoracic ratio, ejection fraction, fractional shortening, interventricular septum thickness, left ventricular wall thickness, left ventricular end-diastolic dimension and left ventricular end-diastolic index. VAs recorded frequently during HD and for 4 hours after HD. In addition, sporadic supraventricular arrhythmias (SVAs) were observed in 16 patients (80%) and frequent SVAs were recorded in 2 patients (10%). It was concluded that cardiac arrhythmias frequently developed in patients with CRF receiving HD, VAs significantly increase during HD and for 4 h after HD and frequency of VAs may be correlated with duration of CRF and the use of acetate as a buffer in the dialysate.
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Affiliation(s)
- C Erem
- Department of Internal Medicine, Karadeniz Technical University, Faculty of Medicine, Trabzon, Turkey
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Bostan M, Qaim SM. Excitation functions of threshold reactions on 45Sc and 55Mn induced by 6 to 13 MeV neutrons. Phys Rev C Nucl Phys 1994; 49:266-271. [PMID: 9969219 DOI: 10.1103/physrevc.49.266] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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