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  1. Article ; Online: Exosomes in breast cancer management: Where do we stand? A literature review.

    Triantafyllou, Alexandra / Gazouli, Maria / Theodoropoulos, Charalampos / Zografos, Eleni / Zografos, George C / Michalopoulos, Nikolaos V

    Biology of the cell

    2022  Volume 114, Issue 4, Page(s) 109–122

    Abstract: Background: Exosomes constitute cellular molecular fingertips that participate in intercellular communication both in health and disease states. Hence, exosomes emerge as critical mediators of cancer development and progression, as well as potential ... ...

    Abstract Background: Exosomes constitute cellular molecular fingertips that participate in intercellular communication both in health and disease states. Hence, exosomes emerge as critical mediators of cancer development and progression, as well as potential biomarkers and novel therapeutic targets.
    Objective: To review literature data regarding applications of circulating exosomes in breast cancer management.
    Methods: This is a literature review of relevant published studies until April 2020 in PubMed and Google Scholar databases. Original papers in the English language concerning exosome related studies were included.
    Results: Exosomes represent molecular miniatures of their parent cells. Several homeostatic mechanisms control exosomal secretion and synthesis. Exosomal exchange among cells creates an intricate intercellular crosstalk orchestrating almost every tissue process, as well as carcinogenesis. Available data highlight exosomes as major mediators of cancer development and progression. The secretion of specific exosomal molecules, particularly miRNAs, correlates with the underlying processes and can be used as a means of tumor detection and prognostic assessment.
    Conclusions: Exosomal miRNAs expression profiles and levels closely relate to cancer extent, type and prognosis. Deep comprehension of such correlations and systematization of experimental outcomes will offer a novel approach in cancer detection and management.
    MeSH term(s) Biomarkers, Tumor/metabolism ; Breast Neoplasms/diagnosis ; Breast Neoplasms/metabolism ; Breast Neoplasms/therapy ; Cell Communication ; Exosomes/metabolism ; Exosomes/pathology ; Female ; Humans ; MicroRNAs/genetics ; MicroRNAs/metabolism
    Chemical Substances Biomarkers, Tumor ; MicroRNAs
    Language English
    Publishing date 2022-02-03
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 245745-3
    ISSN 1768-322X ; 0399-0311 ; 0248-4900
    ISSN (online) 1768-322X
    ISSN 0399-0311 ; 0248-4900
    DOI 10.1111/boc.202100081
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Type 2 diabetes mellitus status in obese patients following sleeve gastrectomy or one anastomosis gastric bypass.

    Vrakopoulou, Gavriella Zoi / Theodoropoulos, Charalampos / Kalles, Vasileios / Zografos, George / Almpanopoulos, Konstantinos

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 4421

    Abstract: This study aims to compare sleeve gastrectomy (SG) and one anastomosis gastric bypass (OAGB) in terms of remission of type 2 diabetes mellitus (T2DM) in obese patients. All T2DM patients were followed-up for at least 36 months. The primary outcome was ... ...

    Abstract This study aims to compare sleeve gastrectomy (SG) and one anastomosis gastric bypass (OAGB) in terms of remission of type 2 diabetes mellitus (T2DM) in obese patients. All T2DM patients were followed-up for at least 36 months. The primary outcome was remission of T2DM. Secondary endpoints included weight reduction and the procedure's impact on quality of life. In total, 53/1177 morbidly obese patients who underwent SG (Group A, n = 28) or OAGB (Group B, n = 25) had T2DM. Preoperatively, the mean Body Mass Index (BMI) values were 52.2 ± 8.5 kg/m
    MeSH term(s) Adult ; Aged ; Body Mass Index ; Diabetes Mellitus, Type 2/physiopathology ; Diabetes Mellitus, Type 2/surgery ; Female ; Gastrectomy/methods ; Gastric Bypass/methods ; Humans ; Male ; Middle Aged ; Obesity, Morbid/physiopathology ; Obesity, Morbid/surgery ; Quality of Life ; Retrospective Studies ; Weight Loss/physiology ; Young Adult
    Language English
    Publishing date 2021-02-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-83807-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Circulating miRNA Expression Profiling in Breast Cancer Molecular Subtypes: Applying Machine Learning Analysis in Bioinformatics.

    Triantafyllou, Alexandra / Dovrolis, Nikolaos / Zografos, Eleni / Theodoropoulos, Charalampos / Zografos, George C / Michalopoulos, Nikolaos V / Gazouli, Maria

    Cancer diagnosis & prognosis

    2022  Volume 2, Issue 6, Page(s) 739–749

    Abstract: Background/aim: Breast cancer is a leading worldwide cause of female cancer-related morbidity and mortality. Since molecular characteristics increasingly guide disease management, demystifying breast tumor miRNA signature emerges as an essential step ... ...

    Abstract Background/aim: Breast cancer is a leading worldwide cause of female cancer-related morbidity and mortality. Since molecular characteristics increasingly guide disease management, demystifying breast tumor miRNA signature emerges as an essential step toward personalized care. This study aimed to investigate the variations in circulating miRNA expression profiles between breast cancer subtypes and healthy controls and to identify relevant target genes and molecular functions.
    Materials and methods: MiRNA expression was tested by miScript™ miRNA PCR Array Human Cancer Pathway Finder kit, and subsequently, a machine learning approach was applied for miRNA profiling of the various breast cancer molecular subtypes.
    Results: Serum samples from patients with primary breast cancer (n=66) and healthy controls (n=16) were analyzed. MiR-21 was the single common molecule among all breast cancer subtypes. Furthermore, several miRNAs were found to be differentially expressed explicitly in the different subtypes; luminal A (miR-23b, miR-142, miR-29a, miR-181d, miR-16, miR-29b, miR-155, miR-181c), luminal B (miR-148a, let-7d, miR-92a, miR-34c, let-7b, miR-15a), HER2+ (miR-125b, miR-134, miR-98, miR-143, miR-138, miR-135b) and triple negative breast cancer (miR-17, miR-150, miR-210, miR-372, let-7f, miR-191, miR-133b, miR-146b, miR-7). Finally, miRNA-associated target genes and molecular functions were identified.
    Conclusion: Applying a machine learning approach to delineate miRNA signatures of various breast cancer molecular subtypes allows further understanding of molecular disease characteristics that can prove clinically relevant.
    Language English
    Publishing date 2022-11-03
    Publishing country Greece
    Document type Journal Article
    ISSN 2732-7787
    ISSN (online) 2732-7787
    DOI 10.21873/cdp.10169
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Severe anaphylactic reaction after blue dye injection for sentinel lymph node biopsy in breast surgery: Report of two cases and literature review.

    Frountzas, Maximos / Theodoropoulos, Charalampos / Karathanasis, Panagiotis / Nikolaou, Christina / Zografos, Constantinos G / Larentzakis, Andreas / Zografos, George C / Michalopoulos, Nikolaos V

    Clinical case reports

    2021  Volume 9, Issue 7

    Abstract: Anaphylactic reactions, and especially the severe ones (types III and IV), should be kept in mind as considerable adverse effects while using blue dyes for SLNB. ...

    Abstract Anaphylactic reactions, and especially the severe ones (types III and IV), should be kept in mind as considerable adverse effects while using blue dyes for SLNB.
    Language English
    Publishing date 2021-05-07
    Publishing country England
    Document type Case Reports
    ZDB-ID 2740234-4
    ISSN 2050-0904
    ISSN 2050-0904
    DOI 10.1002/ccr3.3904
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Long-Term Manometric Impact of the Adjustable Gastric Band on Esophageal Motility: a Prospective Case-Control Study.

    Triantafyllou, Tania / Eleftheriou, Malvina Maria / Theodoropoulos, Charalampos / Schizas, Dimitrios / Michalopoulos, Nikolaos / Archontovasilis, Fotios / Theodorou, Dimitrios

    Obesity surgery

    2021  Volume 31, Issue 7, Page(s) 3333–3336

    MeSH term(s) Case-Control Studies ; Esophageal Motility Disorders/surgery ; Gastroplasty/adverse effects ; Humans ; Laparoscopy ; Manometry ; Obesity, Morbid/surgery ; Prospective Studies
    Language English
    Publishing date 2021-03-26
    Publishing country United States
    Document type Letter
    ZDB-ID 1070827-3
    ISSN 1708-0428 ; 0960-8923
    ISSN (online) 1708-0428
    ISSN 0960-8923
    DOI 10.1007/s11695-021-05361-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Evaluation of plasma and tissue expression levels of Endothelins (ET-1, Big ET-1) and VEGF in lobular neoplasia of the breast.

    Kalles, Vasileios / Papapanagiotou, Ioannis / Matiatou, Maria / Georgiou, Georgia / Theodoropoulos, Charalampos / Triantafyllou, Tania / Zografos, Eleni / Mitrousias, Apostolos / Provatopoulou, Xeni / Michalopoulos, Nikolaos

    Journal of B.U.ON. : official journal of the Balkan Union of Oncology

    2020  Volume 24, Issue 5, Page(s) 1913–1919

    Abstract: Purpose: The endothelin system is involved in the evolution of multiple malignancies, participating in cancer cell proliferation, tumor invasion and angiogenesis. Our purpose was to simultaneously assess endothelin expression in the systemic circulation ...

    Abstract Purpose: The endothelin system is involved in the evolution of multiple malignancies, participating in cancer cell proliferation, tumor invasion and angiogenesis. Our purpose was to simultaneously assess endothelin expression in the systemic circulation of patients with lobular neoplasia (LN) of the breast and to investigate its correlation with vascular endothelial growth factor (VEGF) specimen expression levels as well as clinicopathologic findings.
    Methods: This was a retrospective analysis of prospectively collected data regarding 60 women examined in a single breast unit. Thirty of these women underwent stereotactic biopsy and were diagnosed with LN and the remaining 30 were healthy controls. Circulating levels of endothelin (ET)-1 and Big ET-1 were measured using ELISA, while tissue expression of ET-1 and VEGF in biopsy specimens were assessed using qualitative immunohistochemical staining.
    Results: The plasma levels of Big ET-1 were significantly increased in patients with LN compared to healthy controls. There was no significant difference in the plasma levels of ET-1 between the patient groups. In patients with LN, plasma expression of ET-1 and Big ET-1 did not correlate with ET-1 or VEGF tissue expression status, neither existed a relationship between tissue expressions of ET-1 and VEGF.
    Conclusions: Our results imply that Big ET-1 is a potential biomarker for LN. Further investigation of the endothelin system role in LN seems a promising research field.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Breast/metabolism ; Breast Neoplasms/blood ; Breast Neoplasms/metabolism ; Endothelin-1/blood ; Endothelin-1/metabolism ; Female ; Humans ; Middle Aged ; Neovascularization, Pathologic/blood ; Neovascularization, Pathologic/metabolism ; Precancerous Conditions/blood ; Precancerous Conditions/metabolism ; Retrospective Studies ; Vascular Endothelial Growth Factor A/blood ; Vascular Endothelial Growth Factor A/metabolism
    Chemical Substances Endothelin-1 ; Vascular Endothelial Growth Factor A
    Language English
    Publishing date 2020-07-01
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 2040386-0
    ISSN 2241-6293 ; 1107-0625
    ISSN (online) 2241-6293
    ISSN 1107-0625
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Kounis syndrome after patent blue dye injection for sentinel lymph node biopsy.

    Frountzas, Maximos / Karathanasis, Panagiotis / Vrakopoulou, Gavriella Zoi / Theodoropoulos, Charalampos / Zografos, Constantinos G / Schizas, Dimitrios / Zografos, George C / Michalopoulos, Nikolaos V

    Breast cancer (Tokyo, Japan)

    2020  Volume 27, Issue 6, Page(s) 1191–1197

    Abstract: Background: Kounis syndrome (KS) has been described as an acute coronary syndrome (ACS) associated with an anaphylactic reaction. Several triggers have been identified and the diagnostic and treatment process can be challenging.: Case: A 58-year-old, ...

    Abstract Background: Kounis syndrome (KS) has been described as an acute coronary syndrome (ACS) associated with an anaphylactic reaction. Several triggers have been identified and the diagnostic and treatment process can be challenging.
    Case: A 58-year-old, female patient diagnosed with breast cancer and no history of allergies had subcutaneous injection of patent blue V dye for sentinel lymph node biopsy (SLNB). Intraoperatively, she developed anaphylactic shock and was transferred to the intensive care unit (ICU). A few hours later, electrocardiographic alterations and elevation of blood troponin were observed. Emergency coronary angiography revealed no occlusive lesions in coronary vessels. Further investigation in the allergy department set the diagnosis of KS.
    Conclusion: There are just ten cases of perioperative KS in the literature so far and here we present the first one triggered by patent blue V dye for sentinel node biopsy.
    MeSH term(s) Anaphylaxis/diagnosis ; Anaphylaxis/drug therapy ; Anaphylaxis/etiology ; Breast Neoplasms/pathology ; Breast Neoplasms/surgery ; Carcinoma, Ductal, Breast/pathology ; Carcinoma, Ductal, Breast/surgery ; Coloring Agents/administration & dosage ; Coloring Agents/adverse effects ; Coronary Angiography ; Dual Anti-Platelet Therapy ; Electrocardiography ; Female ; Humans ; Injections, Subcutaneous ; Kounis Syndrome/diagnosis ; Kounis Syndrome/drug therapy ; Kounis Syndrome/etiology ; Lymphatic Metastasis/diagnosis ; Lymphatic Metastasis/pathology ; Mastectomy, Segmental ; Middle Aged ; Rosaniline Dyes/administration & dosage ; Rosaniline Dyes/adverse effects ; Sentinel Lymph Node/diagnostic imaging ; Sentinel Lymph Node/pathology ; Sentinel Lymph Node Biopsy/adverse effects ; Sentinel Lymph Node Biopsy/methods
    Chemical Substances Coloring Agents ; Rosaniline Dyes ; sulfan blue (FH1929ICIT)
    Language English
    Publishing date 2020-06-29
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 2052429-8
    ISSN 1880-4233 ; 1340-6868
    ISSN (online) 1880-4233
    ISSN 1340-6868
    DOI 10.1007/s12282-020-01129-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Implant infections after breast reconstruction surgery following mastectomy: Experience from a Greek breast unit.

    Michalopoulos, Nikolaos V / Frountzas, Maximos / Karathanasis, Panagiotis / Theodoropoulos, Charalampos / Kolia, Aikaterini / Zografos, Constantinos G / Triantafyllou, Tania / Larentzakis, Andreas / Danias, Nikolaos / Zografos, George C

    Breast disease

    2021  Volume 41, Issue 1, Page(s) 37–44

    Abstract: Background: Despite the dominance of implant-based breast reconstruction after mastectomy, during recent years, it has been correlated to some complications. The aim of this study is to present the Greek experience about management of implant infections ...

    Abstract Background: Despite the dominance of implant-based breast reconstruction after mastectomy, during recent years, it has been correlated to some complications. The aim of this study is to present the Greek experience about management of implant infections after breast reconstructions and to investigate the relationship between possible risk factors and breast pocket fluid cultures.
    Methods: In total, 260 patients underwent implant-based breast reconstruction due to breast cancer in our center from 2016 until 2020. 46 patients, that underwent implant or expander replacement after breast reconstruction due to mastectomy were included in the present study.
    Results: 260 patients underwent breast reconstruction in our center and in 46 (18%) of them an implant replacement was required. 21 patients (8%) presented clinically with an implant infection, but 12 of them (5%) had positive cultures from the breast pocket fluid. On the contrary, 25 patients (10%) presented no clinical signs of implant infection, but 5 of them (2%) had a positive culture. In addition, we demonstrated a correlation between implant infection and positive cultures (p = 0.009), along with an association between chemotherapy before implant placements and negative cultures (p = 0.035). Finally, the most common pathogen was Staphylococcus epidermidis (29%), followed by Escherichia coli (24%) and Staphylococcus aureus (18%).
    Conclusion: Implant infection still remains a very serious complication after breast reconstruction surgery. The establishment of a therapeutic protocol, with specific antimicrobial and surgical targets seems as an effective strategy against implant infections.
    MeSH term(s) Adult ; Aged ; Bacteria/classification ; Bacteria/pathogenicity ; Bacterial Infections/etiology ; Breast Implantation/adverse effects ; Breast Implants/microbiology ; Breast Neoplasms/surgery ; Female ; Greece ; Humans ; Mammaplasty/adverse effects ; Mastectomy ; Middle Aged ; Postoperative Complications ; Reoperation/adverse effects ; Retrospective Studies ; Risk Factors
    Language English
    Publishing date 2021-07-10
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 639267-2
    ISSN 1558-1551 ; 0888-6008
    ISSN (online) 1558-1551
    ISSN 0888-6008
    DOI 10.3233/BD-201077
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: A novel way of hook wire placement for surgical resection of suspicious breast lesions using the stereotactic vacuum assisted breast biopsy table.

    Michalopoulos, Nikolaos V / Mitrousias, Apostolos / Karathanasis, Panagiotis V / Kalles, Vasileios / Frountzas, Maximos / Theodoropoulos, Charalampos / Alafaki, Maria / Zografos, Constantine G / Chronas, Angelos / Matiatou, Maria / Zografos, George C

    The breast journal

    2021  Volume 27, Issue 4, Page(s) 403–405

    Abstract: Preoperative hook localization is a necessary procedure for targeting impalpable breast lesions. The aim of the current study is to introduce an alternative technique of wire placement by using the stereotactic biopsy device instead of the conventionally ...

    Abstract Preoperative hook localization is a necessary procedure for targeting impalpable breast lesions. The aim of the current study is to introduce an alternative technique of wire placement by using the stereotactic biopsy device instead of the conventionally used mammography device. Fifty-one patients with impalpable mammographic lesions, graded BIRADS 4 or 5, were prospectively enrolled. Mean duration was 7 ± 1.5 minutes. Lesion-to-wire distance was <1 cm in 96% (51/53). Hook wire placement using the stereotactic biopsy device is considered as a safe, accurate, fast, and well-tolerable for the patient procedure.
    MeSH term(s) Biopsy ; Biopsy, Needle ; Breast/diagnostic imaging ; Breast/surgery ; Breast Neoplasms/diagnostic imaging ; Breast Neoplasms/surgery ; Female ; Humans ; Mammography ; Stereotaxic Techniques
    Language English
    Publishing date 2021-01-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1289960-4
    ISSN 1524-4741 ; 1075-122X
    ISSN (online) 1524-4741
    ISSN 1075-122X
    DOI 10.1111/tbj.14164
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  10. Article: Long-term outcome of myotomy and fundoplication based on intraoperative real-time high-resolution manometry in achalasia patients.

    Triantafyllou, Tania / Theodoropoulos, Charalampos / Georgiou, Georgia / Kalles, Vasileios / Chrysikos, Demosthenis / Filis, Konstantinos / Zografos, Georgios / Theodorou, Dimitrios

    Annals of gastroenterology

    2018  Volume 32, Issue 1, Page(s) 46–51

    Abstract: Background: Current treatment options for achalasia of the esophagus predominantly consist of endoscopic myotomy or laparoscopic myotomy combined with a partial fundoplication. The intraoperative use of conventional manometry has previously been ... ...

    Abstract Background: Current treatment options for achalasia of the esophagus predominantly consist of endoscopic myotomy or laparoscopic myotomy combined with a partial fundoplication. The intraoperative use of conventional manometry has previously been proposed with various results. The aim of the present study was to introduce the use of high-resolution manometry (HRM) during surgical treatment for achalasia and to assess the long-term outcome of this technique.
    Methods: We enrolled achalasia patients within the time period November 2013 to July 2016 who underwent HRM and evaluation of Eckardt scores (ES) before and after tailored laparoscopic myotomy and fundoplication with intraoperative recording using HRM.
    Results: Twenty patients were classified as having achalasia type I (20%), type II (55%), or type III (25%). During surgery, 9 myotomies were extended and 13 fundoplications were modified according to HRM findings. Mean resting (16.1 vs. 41.9 mmHg) and residual (9 vs. 28.7 mmHg) pressures of the lower esophageal sphincter and ES (0.7 vs. 6.9) were significantly eliminated postoperatively over a mean follow-up time of 17.7 months.
    Conclusions: The use of intraoperative HRM gives us the advantage of simultaneous real-time estimation of intraluminal pressures of the esophagus and the ability to identify the exact points that produce pressure during laparoscopy. Consequently, it may be the key to the tailoring of the Heller-Dor technique and improving the outcomes for achalasia patients.
    Language English
    Publishing date 2018-11-14
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 2032850-3
    ISSN 1108-7471
    ISSN 1108-7471
    DOI 10.20524/aog.2018.0326
    Database MEDical Literature Analysis and Retrieval System OnLINE

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