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  1. Article ; Online: Measurement of chromosomal instability and level of DNA damage in peripheral blood mononuclear cells of endometrial cancer patients.

    Marković, Aleksandra / Grujičić, Darko / Živković Radojević, Marija / Milošević-Djordjević, Olivera

    Mutagenesis

    2024  Volume 39, Issue 3, Page(s) 172–180

    Abstract: Endometrial cancer is one of the most common invasive gynecologic malignancies in developed countries. The aim of this study was to evaluate chromosomal instability and level of DNA damage in peripheral blood mononuclear cells (PBMCs) of newly diagnosed ... ...

    Abstract Endometrial cancer is one of the most common invasive gynecologic malignancies in developed countries. The aim of this study was to evaluate chromosomal instability and level of DNA damage in peripheral blood mononuclear cells (PBMCs) of newly diagnosed endometrial cancer patients in relation to health status (diagnosis), age, histological grade of cancer, residence, smoking, number of pregnancies, miscarriages, and abortions. The analyzed sample consisted of 60 individuals, 30 endometrial cancer patients with an average age of 64.37 ± 7.08, and 30 healthy control women with an average age of 60.23 ± 11.55. Chromosomal instability was evaluated by the cytokinesis-block micronucleus (CBMN) assay, and the level of DNA damage by the single-cell gel electrophoresis (comet) assay in PBMCs. The average frequencies of micronuclei (MNi), nucleoplasmic bridges (NPBs) as well as nuclear buds (NBUDs) were significantly higher in cancer patients compared to controls (P < .0005). There was no difference in the nuclear division index (NDI) among the analyzed samples. The comet assay showed that the patients had a significantly increased genetic damage index (GDI) compared with controls (P < .0005). Using linear regression analysis, we found that health status (diagnosis) had the strongest influence on the MN frequency as well as GDI (P < .0005). Our results indicated that there is a high level of genetic damage in both the level of DNA and the level of chromosomes in the PBMCs of newly diagnosed patients with endometrial cancer, where the frequency and level of damage were significantly affected by health status, grade of cancer, residence, number of pregnancies, miscarriages, and abortions.
    MeSH term(s) Humans ; Female ; Leukocytes, Mononuclear/metabolism ; Chromosomal Instability ; DNA Damage ; Endometrial Neoplasms/genetics ; Endometrial Neoplasms/pathology ; Middle Aged ; Micronucleus Tests ; Aged ; Comet Assay/methods ; Case-Control Studies
    Language English
    Publishing date 2024-01-25
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 632903-2
    ISSN 1464-3804 ; 0267-8357
    ISSN (online) 1464-3804
    ISSN 0267-8357
    DOI 10.1093/mutage/geae003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Artemisia vulgaris

    Radović Jakovljević, Marina / Grujičić, Darko / Stanković, Milan / Milošević-Djordjević, Olivera

    Drug and chemical toxicology

    2022  Volume 47, Issue 2, Page(s) 156–165

    Abstract: This study aimed to evaluate the effect of aqueous and acetone extracts ... ...

    Abstract This study aimed to evaluate the effect of aqueous and acetone extracts from
    MeSH term(s) Humans ; Mitomycin/toxicity ; Quercetin/pharmacology ; Acetone/pharmacology ; Micronucleus Tests ; Genomic Instability ; Lymphocytes ; Resorcinols ; Hydroxybenzoates
    Chemical Substances Mitomycin (50SG953SK6) ; alpha-resorcylic acid (2WC5LMO6L1) ; Quercetin (9IKM0I5T1E) ; Acetone (1364PS73AF) ; Resorcinols ; Hydroxybenzoates
    Language English
    Publishing date 2022-12-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 548368-2
    ISSN 1525-6014 ; 0148-0545
    ISSN (online) 1525-6014
    ISSN 0148-0545
    DOI 10.1080/01480545.2022.2154358
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Genome instability in peripheral blood lymphocytes of patients with heart failure and reduced ejection fraction.

    Tubić Vukajlović, Jovana / Simić, Ivan / Smiljanić, Zorica / Grujičić, Darko / Milošević-Djordjević, Olivera

    Mutagenesis

    2023  Volume 38, Issue 2, Page(s) 84–92

    Abstract: Heart failure (HF) is a complex clinical condition characterized by functional and structural defects of the myocardium, but genetic and environmental factors are considered to play an important role in the development of the disease. In the present ... ...

    Abstract Heart failure (HF) is a complex clinical condition characterized by functional and structural defects of the myocardium, but genetic and environmental factors are considered to play an important role in the development of the disease. In the present study, we investigated the genome instability (DNA and chromosomal damage) in patients with heart failure with reduced ejection fraction (HFrEF) ≤40% and its association with risk factors. The studied population included 48 individuals, of which 29 HFrEF patients (mean age 57.41 ± 5.74 years) and 19 healthy controls (mean age 57.63 ± 6.09 years). The genetic damage index in peripheral blood lymphocytes was analyzed using the comet assay, while micronuclei frequency and nuclear division index were analyzed using the cytokinesis-block micronucleus assay. Our results showed that HFrEF patients had a significantly higher genetic damage index compared with the healthy controls (P < .001). Cytokinesis-block micronucleus assay showed that the average micronucleus frequency in peripheral blood lymphocytes of patients was significantly higher, while the nuclear division index values were significantly lower than in controls (P < .01). Using multiple linear regression analysis, pathological state, ejection fraction, creatinine, glucose, associated disease, residence, proBNP, troponin, urea, ACE-inhibitors, and length of the drug therapy were identified as predictors of DNA and/or chromosomal damage in HF patients. We can conclude that DNA and chromosomal damage was increased in patients with HF, which may be a consequence of disease and/or drug therapy.
    MeSH term(s) Humans ; Middle Aged ; DNA Damage ; Heart Failure/genetics ; Heart Failure/pathology ; Stroke Volume ; Micronucleus Tests/methods ; Genomic Instability ; Lymphocytes/pathology
    Language English
    Publishing date 2023-02-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 632903-2
    ISSN 1464-3804 ; 0267-8357
    ISSN (online) 1464-3804
    ISSN 0267-8357
    DOI 10.1093/mutage/gead002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Homozygous-Recessive Characteristics as a Biomarker of Predisposition for COVID-19.

    Grujičić, Darko / Mirkov, Ljiljana / Banković, Dragić / Virijević, Kristina / Marinković, Dragoslav / Milošević-Djordjević, Olivera

    Clinical nursing research

    2023  Volume 32, Issue 3, Page(s) 589–600

    Abstract: Coronavirus disease (COVID-19), a new form of severe acute respiratory syndrome, has caused a global pandemic. The aim of this study was to analyze homozygous-recessive characteristics (HRC) in the group of COVID-19 patients, considering their gender, ... ...

    Abstract Coronavirus disease (COVID-19), a new form of severe acute respiratory syndrome, has caused a global pandemic. The aim of this study was to analyze homozygous-recessive characteristics (HRC) in the group of COVID-19 patients, considering their gender, forms of the disease (mild and severe symptoms), risk factors: hypertension, diabetes mellitus type 2, hyperlipidemia, smoking habits, and the distribution of ABO blood group. Using the HRC test, we analyzed 20 HRCs in a sample of 321 individuals: 205 patients and 116 controls. The average HRC in patients was significantly higher than controls, as well as in patients with severe symptoms compared to patients with mild symptoms. The patients with higher HRC (cut-off ≤5.5) experienced a significantly increased risk of disease of 2.3 times (
    MeSH term(s) Humans ; COVID-19 ; Genotype ; SARS-CoV-2 ; Biomarkers ; Hypertension
    Chemical Substances Biomarkers
    Language English
    Publishing date 2023-01-25
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1146553-0
    ISSN 1552-3799 ; 1054-7738
    ISSN (online) 1552-3799
    ISSN 1054-7738
    DOI 10.1177/10547738221147754
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: A unique case of intracranial collision tumor composed of ganglioglioma WHO gr I and supratentorial ependymoma WHO gr III: case-based literature review.

    Nedeljkovic, Aleksandra / Ilic, Rosanda / Nedeljkovic, Zarko / Milicevic, Mihailo / Raicevic, Savo / Grujicic, Danica

    Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery

    2023  Volume 39, Issue 9, Page(s) 2407–2411

    Abstract: Purpose: Intracranial collision tumor is a rare entity that represents the coexistence of two histopathological different tumor types in the same area without histological admixture or an intermediate cell population zone. So far, several cases of ... ...

    Abstract Purpose: Intracranial collision tumor is a rare entity that represents the coexistence of two histopathological different tumor types in the same area without histological admixture or an intermediate cell population zone. So far, several cases of collision tumors with ganglioglioma as its component have been reported in the literature, while supratentorial ependymoma has never been reported as a collision tumor component. We are presenting a unique case of collision tumor in patient without previous history of head trauma, neurological surgery, radiotherapy, or phakomatosis.
    Methods and results: A 17-year-old male with no previous history of head trauma, neurological surgery, radiotherapy, or phakomatosis was presented to our clinic with grand mal seizure. Brain magnetic resonance imaging with gadolinium contrast was done revealing a contrast-enhancing lesion of right frontal lobe closely related to dura, surrounded by perifocal edema. The patient underwent a gross total tumor resection. Histological examination revealed collision tumor with two distinct components: ganglioglioma and supratentorial ependymoma.
    Conclusion: To our best knowledge, no previous reports of collision tumor composed of ganglioglioma and supratentorial ependymoma in a single patient have been reported. We believe that this report could significantly contribute to further surgical practice as well as to treatment decision for these types of collision tumors.
    MeSH term(s) Male ; Humans ; Adolescent ; Ganglioglioma/diagnostic imaging ; Ganglioglioma/surgery ; Neurocutaneous Syndromes/complications ; Brain Neoplasms/diagnostic imaging ; Brain Neoplasms/surgery ; Magnetic Resonance Imaging ; Craniocerebral Trauma/complications ; Ependymoma/diagnostic imaging ; Ependymoma/surgery ; World Health Organization ; Supratentorial Neoplasms/diagnostic imaging ; Supratentorial Neoplasms/surgery
    Language English
    Publishing date 2023-06-17
    Publishing country Germany
    Document type Case Reports ; Journal Article ; Review
    ZDB-ID 605988-0
    ISSN 1433-0350 ; 0302-2803 ; 0256-7040
    ISSN (online) 1433-0350
    ISSN 0302-2803 ; 0256-7040
    DOI 10.1007/s00381-023-06028-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Book ; Online: Biological Valuation Map of Flanders

    Li, Mingshi / Grujicic, Dusan / De Saeger, Steven / Heremans, Stien / Somers, Ben / Blaschko, Matthew B.

    A Sentinel-2 Imagery Analysis

    2024  

    Abstract: In recent years, machine learning has become crucial in remote sensing analysis, particularly in the domain of Land-use/Land-cover (LULC). The synergy of machine learning and satellite imagery analysis has demonstrated significant productivity in this ... ...

    Abstract In recent years, machine learning has become crucial in remote sensing analysis, particularly in the domain of Land-use/Land-cover (LULC). The synergy of machine learning and satellite imagery analysis has demonstrated significant productivity in this field, as evidenced by several studies. A notable challenge within this area is the semantic segmentation mapping of land usage over extensive territories, where the accessibility of accurate land-use data and the reliability of ground truth land-use labels pose significant difficulties. For example, providing a detailed and accurate pixel-wise labeled dataset of the Flanders region, a first-level administrative division of Belgium, can be particularly insightful. Yet there is a notable lack of regulated, formalized datasets and workflows for such studies in many regions globally. This paper introduces a comprehensive approach to addressing these gaps. We present a densely labeled ground truth map of Flanders paired with Sentinel-2 satellite imagery. Our methodology includes a formalized dataset division and sampling method, utilizing the topographic map layout 'Kaartbladversnijdingen,' and a detailed semantic segmentation model training pipeline. Preliminary benchmarking results are also provided to demonstrate the efficacy of our approach.
    Keywords Computer Science - Computer Vision and Pattern Recognition ; Computer Science - Machine Learning
    Subject code 006
    Publishing date 2024-01-26
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Long-lasting Thrombocytopenia after Transient Pancytopenia Induced by Short-Term Concomitant Radiotherapy and Temozolomide.

    Stepanović, Aleksandar / Nikitović, Marina / Bogdanović, Andrija / Grujičić, Danica

    European journal of case reports in internal medicine

    2020  Volume 7, Issue 10, Page(s) 1785

    Abstract: We describe long-lasting and incompletely resolved thrombocytopenia after transient profound pancytopenia in a 62-year-old female patient with glioblastoma after short-term radiotherapy with temozolomide. Pancytopenia was present for more than 4 weeks ... ...

    Abstract We describe long-lasting and incompletely resolved thrombocytopenia after transient profound pancytopenia in a 62-year-old female patient with glioblastoma after short-term radiotherapy with temozolomide. Pancytopenia was present for more than 4 weeks and thrombocytopenia for more than 6 months, without platelet recovery to normal levels.
    Learning points: Some patients may experience severe haematological manifestations after even short-term radiotherapy with temozolomide.In everyday practice, clinical models precisely predicting the haematological toxicity of concomitant treatment with temozolomide and radiotherapy is necessary, especially in countries where genetic tests are not available.Incomplete recovery of the cells of a particular bloodline over a long period may necessitate permanent discontinuation of chemotherapy or radiotherapy.
    Language English
    Publishing date 2020-07-07
    Publishing country Italy
    Document type Journal Article
    ISSN 2284-2594
    ISSN (online) 2284-2594
    DOI 10.12890/2020_001785
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Factors associated with preoperative and early and late postoperative seizures in patients with supratentorial meningiomas.

    Bogdanovic, Ivan / Ristic, Aleksandar / Ilic, Rosanda / Bascarevic, Vladimir / Bukumiric, Zoran / Miljkovic, Aleksandar / Milisavljevic, Filip / Stepanovic, Aleksandar / Lazic, Igor / Grujicic, Danica

    Epileptic disorders : international epilepsy journal with videotape

    2023  Volume 25, Issue 2, Page(s) 244–254

    Abstract: Objective: Risk factors for epilepsy in meningioma patients are not yet clearly defined, however, seizure freedom is a significant factor for quality of life after surgery.: Methods: We performed a retrospective study of the 333 adult patients who ... ...

    Abstract Objective: Risk factors for epilepsy in meningioma patients are not yet clearly defined, however, seizure freedom is a significant factor for quality of life after surgery.
    Methods: We performed a retrospective study of the 333 adult patients who received surgery for supratentorial meningioma at our center. Various clinical, radiological, and surgical variables were included in the multivariate regression, and the outcomes measured were the occurrence of seizure(s) preoperatively, during the hospitalization, and during the follow-up period.
    Results: A total of 89 (26.7%) patients experienced preoperative seizures, of whom 62.9% were seizure free after the surgery. Of 244 patients without epilepsy before surgery, 11.9% had at least one seizure postoperatively. In total, 63 of our patients (18.9%) experienced seizures after the surgery, of whom 20 had refractory epilepsy. Multivariate analysis identified the following predictors of preoperative seizures: the absence of headache (OR: 0.23, CI: 2.55-8.50), the presence of significant peritumoral edema (OR: 4.35, CI: 2.57-7.35), and younger age (OR: 0.97 per year increase, CI: 0.95-0.99). Factors associated with early postoperative seizures were: younger age (OR: 0.96 per year increase, CI: 0.93-0.99) and the presence of preoperative seizures (OR: 2.73, CI: 1.13-6.57), while the presence of preoperative seizures (OR: 4.73, CI: 2.05-10.92), tumor progression (OR: 5.38, CI: 2.25-12.89), and neurological worsening (OR: 5.21 CI: 1.72-15.81) were significant for late postoperative seizures.
    Significance: Our results from a single-center meningioma cohort confirm, in general, data from some previous studies regarding patients' characteristics for both preoperative and overall postoperative epilepsy. Besides previously described risk factors, younger age was important for preoperative and early postoperative seizures. Epilepsy is common in patients with recurrence of meningioma, but the variables of significance for refractory seizures in these patients require further examination.
    MeSH term(s) Adult ; Humans ; Meningioma/complications ; Meningioma/surgery ; Meningioma/diagnosis ; Retrospective Studies ; Quality of Life ; Postoperative Complications/epidemiology ; Postoperative Complications/etiology ; Postoperative Complications/diagnosis ; Seizures/complications ; Epilepsy/complications ; Supratentorial Neoplasms/complications ; Supratentorial Neoplasms/surgery ; Supratentorial Neoplasms/diagnosis ; Meningeal Neoplasms/complications ; Meningeal Neoplasms/surgery ; Treatment Outcome
    Language English
    Publishing date 2023-05-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2086797-9
    ISSN 1950-6945 ; 1294-9361
    ISSN (online) 1950-6945
    ISSN 1294-9361
    DOI 10.1002/epd2.20021
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: A potential role of mechano-gated potassium channels in meningioma-related seizures.

    Bogdanović, Ivan / Opačić, Miloš / Baščarević, Vladimir / Raičević, Savo / Ilić, Rosanda / Grujičić, Danica / Spasojević, Ivan / Ristić, Aleksandar J

    Heliyon

    2023  Volume 9, Issue 10, Page(s) e20761

    Abstract: Every third patient with intracranial meningioma develops seizures of poorly understood etiology. Tumor and peritumoral edema may exert mechanical pressure on the cortex that may affect mechano-gated potassium channels - KCNK2 and KCNK4. These channels ... ...

    Abstract Every third patient with intracranial meningioma develops seizures of poorly understood etiology. Tumor and peritumoral edema may exert mechanical pressure on the cortex that may affect mechano-gated potassium channels - KCNK2 and KCNK4. These channels regulate neuron excitability and have been related to seizures in some other conditions. The objective of the present study was to explore a potential relation between the levels of these proteins in tumor tissue and adjacent cortex and seizures development. The study included 19 meningioma patients that presented one or more preoperative seizures and 24 patients with no seizures. Tissue samples were collected in the course of surgical removal of the meningioma. Postoperative seizure freedom was achieved in 11 out of 19 patients. The relative level of KCNK2 in the cortical tissue was lower in patients with preoperative seizures. On the other hand, cortical tissue level of KCNK4 was higher in patients that became seizure-free after the surgery. In addition, relative levels of KCNK4 in the cortical and tumor tissue appear to be lowered by the treatment with anti-seizure medication levetiracetam. These results imply that KCNK2 and KCNK4 may be involved in the development of meningioma-related seizures and may represent promising therapeutic targets.
    Language English
    Publishing date 2023-10-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e20761
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Germline Variants in Cancer Predisposition Genes in Pediatric Patients with Central Nervous System Tumors.

    Jovanović, Aleksa / Tošić, Nataša / Marjanović, Irena / Komazec, Jovana / Zukić, Branka / Nikitović, Marina / Ilić, Rosanda / Grujičić, Danica / Janić, Dragana / Pavlović, Sonja

    International journal of molecular sciences

    2023  Volume 24, Issue 24

    Abstract: Central nervous system (CNS) tumors comprise around 20% of childhood malignancies. Germline variants in cancer predisposition genes (CPGs) are found in approximately 10% of pediatric patients with CNS tumors. This study aimed to characterize variants in ... ...

    Abstract Central nervous system (CNS) tumors comprise around 20% of childhood malignancies. Germline variants in cancer predisposition genes (CPGs) are found in approximately 10% of pediatric patients with CNS tumors. This study aimed to characterize variants in CPGs in pediatric patients with CNS tumors and correlate these findings with clinically relevant data. Genomic DNA was isolated from the peripheral blood of 51 pediatric patients and further analyzed by the next-generation sequencing approach. Bioinformatic analysis was done using an "in-house" gene list panel, which included 144 genes related to pediatric brain tumors, and the gene list panel Neoplasm (HP:0002664). Our study found that 27% of pediatric patients with CNS tumors have a germline variant in some of the known CPGs, like
    MeSH term(s) Humans ; Child ; Genetic Predisposition to Disease ; Germ-Line Mutation ; Central Nervous System Neoplasms/genetics ; Central Nervous System Neoplasms/pathology ; Brain Neoplasms ; Germ Cells/pathology
    Language English
    Publishing date 2023-12-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms242417387
    Database MEDical Literature Analysis and Retrieval System OnLINE

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