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Kyurkchiyan SG, Popov TM, Shakola F, Rangachev J, Mitev VI, Kaneva R. A pilot study reveals the potential of miR-31-3p and miR-196a-5p as non-invasive biomarkers in advanced laryngeal cancer. Folia Med (Plovdiv) 2021; 63:355-364. [PMID: 34196150 DOI: 10.3897/folmed.63.e55346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 08/11/2020] [Indexed: 11/12/2022] Open
Abstract
INTRODUCTION Recently, miRNAs have become popular molecules used as non-invasive biomarkers in cancer diseases. AIM The aim of the study was to explore the expression of four miRNAs isoforms: miR-31-3p, miR-196a-5p, miR-210-3p and miR-424-5p in plasma and tissue samples from patients with advanced laryngeal squamous cell carcinoma (LSCC) and healthy controls. MATERIALS AND METHODS Fresh-frozen tumour and normal laryngeal tissue as well as plasma samples were obtained from 22 patients diagnosed with advanced LSCC. The control group included plasma samples from 21 cancer-free volunteers. Total RNA (including miRNAs) extraction, reverse transcription and real time qPCR were the laboratory techniques used in the study. The obtained results were analyzed using SPSS software v. 23. RESULTS We found that miR-31-3p, miR-196a-5p, and miR-210-3p levels were significantly elevated in laryngeal tumour tissue, but only the levels of miR-31-3p and miR-196a-5p were significantly upregulated in the plasma LSCC target group. Positive correlation was obtained for miR-31-3p (rs=0.443, p=0.039) and miR-196a-5p (rs=0.548; p=0.008) between plasma and adjacent tumour tissue LSCC samples. ROC analyses were used to evaluate the discriminative power of both miRNAs alone and in combination. The combination of miR-31-3p and miR-196a-5p showed best results with AUC=0.978 (95% CI: 0.945-1.000, p.
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Popov TM, Giragosyan S, Petkova V, Stancheva G, Marinov T, Belitova M, Rangachev J, Popova D, Kaneva RP. Proangiogenic signature in advanced laryngeal carcinoma after microRNA expression profiling. Mol Biol Rep 2020; 47:5651-5655. [PMID: 32533400 DOI: 10.1007/s11033-020-05250-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 01/07/2020] [Indexed: 10/24/2022]
Abstract
The aim of this study is to evaluate which dysregulated angiomiRs compose the specific proangiogenic microRNA signature of advanced laryngeal cancer and review the literature. Thirty-six samples from twelve patients with advanced laryngeal carcinoma were collected. Total RNA was extracted and microRNA global profiling was performed using Agilent Technologies Microarray Kit. Fifty-nine microRNAs were found to have significantly different expression levels. Eleven microRNAs from the whole group were sorted as regulators of tumor angiogenesis (angiomiRs): seven were up-regulated-miR-1246, miR-181b 5p, miR-18a 5p, miR-21 3p, miR-210 3p, miR-503 5p, miR-93 5p and four were down-regulated-miR148a 5p, miR-145 5p, miR-204 5p, miR-125b 5p. For none of those microRNAs we found heterogeneity in tumor tissue. We are the first to report the specific proangiogenic microRNA signature in advanced laryngeal carcinoma and we confirm and amplify findings from previous studies that expand our perception of a specific "molecular state" of angiogenesis that is distinctive only for laryngeal cancer.
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Affiliation(s)
- T M Popov
- Department of ENT, Medical University-Sofia, Sofia, Bulgaria.
| | - S Giragosyan
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical University-Sofia, Sofia, Bulgaria
| | - V Petkova
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical University-Sofia, Sofia, Bulgaria
| | - G Stancheva
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical University-Sofia, Sofia, Bulgaria
| | - Ts Marinov
- Department of Anesthesiology and Intensive Care, Medical University-Sofia, Sofia, Bulgaria
| | - M Belitova
- Department of Anesthesiology and Intensive Care, Medical University-Sofia, Sofia, Bulgaria
| | - J Rangachev
- Department of ENT, Medical University-Sofia, Sofia, Bulgaria
| | - D Popova
- Department of ENT, Medical University-Sofia, Sofia, Bulgaria
| | - R P Kaneva
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical University-Sofia, Sofia, Bulgaria
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Garo Kyurkchiyan S, Miroslavov Popov T, Stancheva G, Rangachev J, Ivanov Mitev V, Petrova Popova D, Petrova Kaneva R. Novel insights into laryngeal squamous cell carcinoma from association study of aberrantly expressed miRNAs, lncRNAs and clinical features in Bulgarian patients. J BUON 2020; 25:357-366. [PMID: 32277655] [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: 06/11/2023]
Abstract
PURPOSE Laryngeal cancer is one of most common and aggressive head and neck cancers with poor prognosis and great necessity for improvement of treatment modalities. MicroRNAs (miRs) are among the most investigated molecules recently due to their potential as diagnostic and prognostic biomarkers in cancer. The purpose of our study was to explore the association of certain clinicopathological features with the expression levels of some known cancer associated non-coding (nc) RNAs: miR-21 and miR-31 in both of their isoforms, miR-145-5p, miR-55-5p, miR-196a-5p, miR-210-3p, miR-221-3p, miR-222-3p, miR-424-5p, lncRNA MALAT1 and lncRNA HOTAIR. METHODS Expression levels of the chosen markers were investigated in laryngeal squamous cell carcinoma (LSCC) and normal samples in 82 Bulgarian patients via RT-qPCR, and the results were analyzed with SPSS v23.0 statistical software. RESULTS All of the explored ncRNAs were significantly deregulated in LSCC samples, suggesting their involvement in laryngeal carcinogenesis. New significant association were found between the expression levels of miR-21-5p, miR-222-3p, HOTAIR and family history. Moreover, miR-424-5p showed potential as marker for subglottic LSCC location, and "passenger" miR-31-3p was significantly upregulated in well and moderately differentiated LSCC. CONCLUSION Our results enrich the knowledge about ncRNA involvement in LSCC tumorigenesis. Further studies are needed to evaluate the clinical utility of the differently expressed ncRNAs as potential diagnostic and prognostic biomarkers in LSCC.
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Affiliation(s)
- Silva Garo Kyurkchiyan
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical University, Sofia, Bulgaria
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Popov TM, Marinov T, Rangachev J, Konov D, Belitova M. Cricotracheal Resection in a Patient with Severe Subglottic Stenosis - Advantages of a Temporary Non-Cannulated Tracheostomy. Balkan Med J 2017; 34:165-167. [PMID: 28418345 PMCID: PMC5394299 DOI: 10.4274/balkanmedj.2016.0108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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] [Indexed: 12/01/2022] Open
Abstract
Background: Stenosis in the area of the cricotracheal segment is still a challenging problem to be dealt with. Post-intubational cases mark an increase in recent years due to the advances in intensive care, thoracic surgery and neurosurgery departments. Case Report: This paper describes a case report of a patient with severe subglottic stenosis (grade III according to the Cotton-Myer scale), introduces a new option in cricotracheal resections - postoperative temporary non-cannulated tracheostomy and describes its advantages. Conclusion: This variation of classical operative techniques provides additional fixation of the trachea, thus relieving any transitory tension on the anastomosis; acts as a valve and decreases the air-pressure in the upper airways during coughing and sneezing in the post-operative period; and is an easy access point for video tracheoscopy of the anastomosis.
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Affiliation(s)
| | - Tzvetomir Marinov
- Department of Anesthesiology and Intensive Care, Medical University of Sofia, Sofia, Bulgaria
| | - Julian Rangachev
- Department of Otolaryngology, Medical University of Sofia, Sofia, Bulgaria
| | - Dimitar Konov
- Department of Otolaryngology, Medical University of Sofia, Sofia, Bulgaria
| | - Maya Belitova
- Department of Anesthesiology and Intensive Care, Medical University of Sofia, Sofia, Bulgaria
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Giragosyan S, Stancheva G, Popov T, Konov D, Rangachev J, Stoyanov O, Mitev V, Todorov S, Kaneva R. Expression of hypoxia related miRNAs in laryngeal squamous cell carcinoma. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61032-8] [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: 11/30/2022]
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Popov TM, Dikov T, Goranova TE, Stancheva G, Kaneva RP, Todorov S, Stoyanov O, Rangachev J, Marinov T, Popova DP, Mitev VI, Konov D. Macrophageal infiltration and microvessel density in laryngeal carcinoma: study of 52 cases. Acta Otorhinolaryngol Ital 2016; 35:321-4. [PMID: 26824913 PMCID: PMC4720927 DOI: 10.14639/0392-100x-588] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Angiogenesis is one of the six originally constituted hallmarks of cancer that has been extensively studied in the last two decades. The aim of our study is to assess the microvessel and macrophageal density in laryngeal carcinoma and its clinicopathological correlations. We immunohistochemically assessed microvessel density (CD34) and macrophage count (CD68) using microarray techniques and then looked for clinicopathological correlations. The mean micro-vessel density in the study group was 14.27 ± 12.92 vessels in a ×200 field with a mean macrophageal infiltration density of 5.19 ± 4.32. Median microvessel density was significantly higher in patients with metastasis than in patients without metastasis. Additionally, linear regression established that macrophageal infiltration density could predict microvessel density in laryngeal carcinoma. We found no association between either factor and recurrence rate or other clinical characteristics. Our study adds additional data to a problem that has been widely studied during the last two decades, even if controversies in this area still remain.
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Affiliation(s)
- T M Popov
- Department of ENT, Medical University of Sofia, Bulgaria
| | - T Dikov
- Department of Pathology, Medical University of Sofia, Bulgaria
| | - T E Goranova
- Department of Medical Chemistry and Biochemistry and Molecular Medicine Center, Medical University of Sofia, Bulgaria
| | - G Stancheva
- Department of Medical Chemistry and Biochemistry and Molecular Medicine Center, Medical University of Sofia, Bulgaria
| | - R P Kaneva
- Department of Medical Chemistry and Biochemistry and Molecular Medicine Center, Medical University of Sofia, Bulgaria
| | - S Todorov
- Department of ENT, Medical University of Sofia, Bulgaria
| | - O Stoyanov
- Department of ENT, Medical University of Sofia, Bulgaria
| | - J Rangachev
- Department of ENT, Medical University of Sofia, Bulgaria
| | - T Marinov
- Department of ENT, Medical University of Sofia, Bulgaria
| | - D P Popova
- Department of ENT, Medical University of Sofia, Bulgaria
| | - V I Mitev
- Department of Medical Chemistry and Biochemistry and Molecular Medicine Center, Medical University of Sofia, Bulgaria
| | - D Konov
- Department of ENT, Medical University of Sofia, Bulgaria
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Popov TM, Goranova T, Stancheva G, Kaneva R, Dikov T, Chalakov I, Rangachev J, Konov D, Todorov S, Stoyanov O, Mitev V. Relative quantitative expression of hypoxia-inducible factor-1α, -2α and -3α, and vascular endothelial growth factor A in laryngeal carcinoma. Oncol Lett 2015; 9:2879-2885. [PMID: 26137164 DOI: 10.3892/ol.2015.3070] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 03/05/2015] [Indexed: 01/07/2023] Open
Abstract
The aim of the present study was to determine the relative quantitative expression of hypoxia-inducible factor (HIF)-1α, -2α and -3α, and VEGF-A in laryngeal carcinoma. A total of 63 patients with carcinoma of the larynx were enrolled in the study. Total RNA was isolated from fresh, frozen normal and tumor tissues of each patient, and quantitative polymerase chain reaction was performed. HIF-1α was upregulated in the majority of patients (44 patients; 69.84%). By contrast, only 7 (11.11%) patients from the whole group displayed HIF-2α overexpression, while the HIF-3α isoform was silenced in the majority of patients (48 patients, 76.19%). A small group of 5 (7.94%) patients exhibited significant overexpression of the HIF-3α isoform. VEGF-A expression was significantly higher (P<0.05) in patients with upregulated HIF-1α (2.72±1.41 RQ) compared with patients without upregulated HIF-1α (1.86±1.46 RQ). There was a moderate positive correlation between mRNA expression levels of HIF-1α and VEGF-A (rs=0.392; P<0.005). To the best of our knowledge, this study is first to report quantitative data with regard to the expression of all three HIF isoforms in malignant neoplasms. The findings suggest the existence of specific phenotypes of HIF expression in laryngeal carcinoma, where the HIF switch is absent.
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Affiliation(s)
| | - Teodora Goranova
- Department of Medical Chemistry and Biochemistry and Molecular Medicine Center, Medical University of Sofia, Sofia 1680, Bulgaria
| | - Gergana Stancheva
- Department of Medical Chemistry and Biochemistry and Molecular Medicine Center, Medical University of Sofia, Sofia 1680, Bulgaria
| | - Radka Kaneva
- Department of Medical Chemistry and Biochemistry and Molecular Medicine Center, Medical University of Sofia, Sofia 1680, Bulgaria
| | - Tihomir Dikov
- Department of Pathology, Medical University of Sofia, Sofia 1680, Bulgaria
| | - Ivan Chalakov
- Department of Ear, Nose and Throat, Medical University of Sofia, Sofia 1680, Bulgaria
| | - Julian Rangachev
- Department of Ear, Nose and Throat, Medical University of Sofia, Sofia 1680, Bulgaria
| | - Dimitar Konov
- Department of Ear, Nose and Throat, Medical University of Sofia, Sofia 1680, Bulgaria
| | - Spiridon Todorov
- Department of Ear, Nose and Throat, Medical University of Sofia, Sofia 1680, Bulgaria
| | - Orlin Stoyanov
- Department of Ear, Nose and Throat, Medical University of Sofia, Sofia 1680, Bulgaria
| | - Vanio Mitev
- Department of Medical Chemistry and Biochemistry and Molecular Medicine Center, Medical University of Sofia, Sofia 1680, Bulgaria
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Koleva M, Rangachev J, Boev M. Risk assessment of the occupational contact with ammonium. Cent Eur J Public Health 2000; 8:14-7. [PMID: 10761620] [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: 02/16/2023]
Abstract
The aim of the cohort retrospective study was to analyze and evaluate the influence of certain factors (age, profession, smoking) on the characteristics and the incidence rate of the upper respiratory tract diseases (URTDs) in the occupational contact with ammonium. Subjects were 180 men, divided into 3 professional groups. The average shift concentrations of ammonium were measured in the permanent work places and individually by personal passive dosemeters. The URTDs were classified into 15 groups according to localization and the stage of the inflammatory process. The relationships "time-response" and "dose (concentration)-response" were determined. The factor "cumulative exposure" was used in order to evaluate the actual noxious effect of NH3 on the mucose of the upper respiratory tract (URT). There was a statistically reliable difference found in the incidence rate of atrophic rhinitis, hypertrophic pharyngitis and laryngitis, and neoplasms of the URT in the workers with the highest cumulative exposure. For this group relative risk was 4.00, 2.22, 3.20 and 4.00, respectively, with 95% Cl. The "cumulative exposure" factor gives the best proofs for the toxic effect of ammonium and a possibility for assessment of the relative risk.
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Affiliation(s)
- M Koleva
- Department of Hygiene, Ecology and Occupational Health, Medical University, Sofia, Bulgaria
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