Konstantinos Liapis

Prof. Konstantinos Liapis


Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

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

Representative Publications

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6 April 2020 in Journal of Turkish Society of Obstetric and Gynecology
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Journal Article
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KLKonstantinos Liapis
Konstantinos Liapis
NTNikolaos Tasis
Nikolaos Tasis
ITIoannis Tsouknidas
Ioannis Tsouknidas
GTGEORGE TSAKOTOS
GEORGE TSAKOTOS
PSPanagiotis Skandalakis
Panagiotis Skandalakis
DFDIMITRIOS FILIPPOU
DIMITRIOS FILIPPOU
Uterine arteries are the main vessels supplying blood to the uterus. Mainly, they originate from the anterior trunk of the internal iliac artery. Uterine arteries play an important role in pregnancy as well as transcatheter arterial embolization for postpartum hemorrhage and uterine fibroid management. This is a review of the English literature in the PubMed database of the anatomic variety on the origin of uterine arteries and their clinical significance. Eleven studies describe the origin of the uterine arteries and their variations in the literature. In six studies, the uterine artery emerged from internal iliac artery in the majority of the cases, either as a separate branch, or as a bifurcation with the inferior gluteal artery, or trifurcation with superior and inferior gluteal artery. In two studies, the inferior gluteal artery manifested as the main source of the uterine artery, whereas in three studies, the umbilical artery posed as its main origin. Internal iliac artery is described as the most common vascular origin of uterine artery. However, this review highlights that the main vessels of origin for uterine arteries are internal iliac, umbilical and inferior gluteal artery. Nevertheless, classification and further research for this peculiar anatomic structure is fundamental in the future.

19 January 2022 in Biomedicines
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Journal Article
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SPStefanos I. Papadhimitriou
Stefanos I. Papadhimitriou
Evangelos TerposEvangelos Terpos
Evangelos Terpos
KLKonstantinos Liapis
Konstantinos Liapis
DPDimitrios Pavlidis
Dimitrios Pavlidis
TMTheodoros Marinakis
Theodoros Marinakis
IKIoannis Kostopoulos
Ioannis Kostopoulos
Plasma cell leukemia (PCL) is a rare and aggressive plasma cell dyscrasia that may appear as de-novo leukemia (pPCL) or on the basis of a pre-existing multiple myeloma (MM), called secondary plasma cell leukemia (sPCL). In this prospective study, we have applied a broad panel of FISH probes in 965 newly diagnosed MM (NDMM) and 44 PCL cases of both types to reveal the particular cytogenetic differences among the three plasma cell dyscrasias. In order to evaluate the frequency and patterns of clonal evolution, the same FISH panel was applied both at diagnosis and at the time of first relapse for 81 relapsed MM patients and both at MM diagnosis and during sPCL transformation for the 19 sPCL cases described here. pPCL was characterized by frequent MYC translocations and t(11;14) with a 11q13 breakpoint centered on the MYEOV gene, not commonly seen in MM. sPCL had a higher number of FISH abnormalities and was strongly associated with the presence of del(17p13), either acquired at the initial MM stage or as a newly acquired lesion upon leukemogenesis in the context of the apparent clonal evolution observed in sPCL. In clinical terms, sPCL showed a shorter overall survival than pPCL with either standard or high-risk (t(4;14) and/or t(14;16) and/or del(17p13) and/or ≥3 concomitant aberrations) abnormalities (median 5 months vs. 21 and 11 months respectively, p < 0.001), suggesting a prognostic stratification based on cytogenetic background. These observations proved relevant in the NDMM setting, where higher levels of circulating plasma cells (CPCs) were strongly associated with high-risk cytogenetics (median frequency of CPCs: 0.11% of peripheral blood nucleated cells for high-risk vs. 0.007% for standard-risk NDMM, p < 0.0001). Most importantly, the combined evaluation of CPCs (higher or lower than a cut-off of 0.03%), together with patients’ cytogenetic status, could be used for an improved prognostic stratification of NDMM patients.

18 November 2008 in Annals of Pharmacotherapy
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Journal Article
Closed access
KLKonstantinos Liapis
Konstantinos Liapis
JAJohn Apostolidis
John Apostolidis
ECEvangelia Charitaki
Evangelia Charitaki
FPFotios Panitsas
Fotios Panitsas
NHNikolaos Harhalakis
Nikolaos Harhalakis
ENEmmanuel Nikiforakis
Emmanuel Nikiforakis
Objective: Despite the high prevalence of headache and migraine in the general population, many people do not receive adequate medical attention and treatment. Case Summary: A 29-year-old woman was diagnosed with Bcr-abl+ acute lymphoblastic leukemia, and treatment was initiated with chemotherapy and imatinib 800 mg daily. Following imatinib initiation, a gradual decrease in serum sodium level was noticed. Prolonged aplasia and neutropenic fever prompted discontinuation of therapy for 4 weeks. Following the patient's recovery, complete remission was achieved and monotherapy with imatinib 800 mg daily was restarted; however, hyponatremia recurred a few days later. The clinical findings and laboratory workup were compatible with the diagnosis of SIADH, which was attributed to high-dose imatinib. Fluid restriction and imatinib dosage reduction (to 600 mg/day) restored sodium levels. According to the Naranjo probability scale, this adverse reaction was probably associated with imatinib. Discussion: Imatinib emerged as the first tyrosine kinase inhibitor to enter everyday clinical practice for the treatment of Ph+ leukemias. Due to its molecular specificity, imatinib lacks the broad cytotoxicity of conventional chemotherapy. Inhibition of kinases in normal tissues accounts for many of imatinib's adverse reactions. To our knowledge, this is the first reported case of imatinib-induced SIADH. Conclusions: We recommend monitoring for SIADH if a patient receiving high-dose imatinib develops hyponatremia.

8 March 2023 in Cancers
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AKAngeliki Kotsiafti
Angeliki Kotsiafti
KGKonstantinos Giannakas
Konstantinos Giannakas
PCPanagiotis Christoforou
Panagiotis Christoforou
KLKonstantinos Liapis
Konstantinos Liapis
Therapy-related acute myeloid leukemia (t-AML) comprises 10–20% of all newly diagnosed cases of AML and is related to previous use of chemotherapy or ionizing radiotherapy for an unrelated malignant non-myeloid disorder or autoimmune disease. Classic examples include alkylating agents and topoisomerase II inhibitors, whereas newer targeted therapies such as poly (adenosine diphosphate–ribose) polymerase (PARP) inhibitors have emerged as causative agents. Typically, t-AML is characterized by adverse karyotypic abnormalities and molecular lesions that confer a poor prognosis. Nevertheless, there are also cases of t-AML without poor-risk features. The management of these patients remains controversial. We describe the causes and pathophysiology of t-AML, putting emphasis on its mutational heterogeneity, and present recent advances in its treatment including CPX-351, hypomethylating agent plus venetoclax combination, and novel, molecularly targeted agents that promise to improve the cure rates. Evidence supporting personalized medicine for patients with t-AML is presented, as well as the authors’ clinical recommendations.

13 December 2021 in Frontiers in Oncology
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Journal Article
Open access
KLKonstantinos Liapis
Konstantinos Liapis
IKIoannis Kotsianidis
Ioannis Kotsianidis
Chronic myelomonocytic leukemia (CMML) is a rare clonal haematological malignancy bearing characteristics of both myelodysplastic syndromes and myeloproliferative neoplasms. It primarily affects older people (median age at diagnosis ~72 years). There are many challenges encountered in its treatment. One striking issue is the lack of strong clinical evidence from large randomized clinical trials for treating this disease. Another issue is that patients with CMML have highly variable outcomes with current treatments. Additional challenges include a wider application of current knowledge, an improved understanding of pathogenesis, development of new therapies, and management of refractory cases/disease progression. It is clear that there is still progress to be made. Here, we review the available first-line treatment options for advanced CMML. Emphasis has been placed on choosing between hypomethylating agents and cytotoxic treatments, on the basis on disease-specific and patient-specific characteristics. A proper selection between these two treatments could lead to a better quality of care for patients with CMML.

6 December 2019 in Journal of Clinical Pathology
Verified
Journal Article
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KLKonstantinos Liapis
Konstantinos Liapis
NTNikolaos J Tsagarakis
Nikolaos J Tsagarakis
FPFotis Panitsas
Fotis Panitsas
ATAnna Taparkou
Anna Taparkou
ILIoannis Liapis
Ioannis Liapis
GPGeorge Paterakis
George Paterakis
Aims: The causes and diagnosis of ‘double-negative’ (CD3+CD4−CD8−) T-cell lymphocytosis are not well studied. We aimed to define the causes of double-negative T-cell lymphocytosis in children and adults, and to identify simple clinical and laboratory features that would help to differentiate between the underlying conditions. Methods: We collected clinical and laboratory data on 10 children and 30 adults with significantly increased peripheral-blood double-negative T-cells (>10% of total lymphocytes). We identified conditions associated with double-negative T-lymphocytosis with flow cytometry, peripheral-blood morphology and T-cell receptor-gene rearrangement studies. Patients were assigned to diagnostic categories on the basis of these test results. Results and conclusions: The causes of double-negative T-cell lymphocytosis in children were autoimmune lymphoproliferative syndrome (ALPS) and reactive γ/δ Τ-lymphocytosis. T-cell large granular lymphocyte (T-LGL) leukaemia, reactive γ/δ T-lymphocytosis and hepatosplenic T-cell lymphoma (HSTL) were the the most common disorders underlying double-negative T-cell lymphocytosis in adults. Less common causes included hypereosinophilic syndrome, peripheral T-cell lymphoma, ALPS and monoclonal, double-negative T-lymphocytosis of uncertain significance. CD5/CD7/Vδ2 expression and absolute double-negative lymphocyte count (<1.8×109/L) were useful discriminators for distinguishing patients with reactive γ/δ T-lymphocytosis from those with γ/δ lymphoproliferative disorders. Differentiating between γ/δ T-LGL and HSTL can be difficult. Expression of CD57 and cellular morphology (pale cytoplasm with distinct granules) would support a diagnosis of γ/δ T-LGL.