Bogdan Ovidiu Popescu

Prof. Dr. Bogdan Ovidiu Popescu


Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

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

Representative Publications

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23 May 2017 in BMC Neurology
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Journal Article
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Anders WallinAnders Wallin
Anders Wallin
Elisabeth KapakiElisabeth Kapaki
Elisabeth Kapaki
MBM. Boban
M. Boban
SES. Engelborghs
S. Engelborghs
Dirk HermannDirk Hermann
Dirk Hermann
GRGary A. Rosenberg
Gary A. Rosenberg
Vascular cognitive impairment (VCI) is a heterogeneous entity with multiple aetiologies, all linked to underlying vascular disease. Among these, VCI related to subcortical small vessel disease (SSVD) is emerging as a major homogeneous subtype. Its progressive course raises the need for biomarker identification and/or development for adequate therapeutic interventions to be tested. In order to shed light in the current status on biochemical markers for VCI-SSVD, experts in field reviewed the recent evidence and literature data. The group conducted a comprehensive search on Medline, PubMed and Embase databases for studies published until 15.01.2017. The proposal on current status of biochemical markers in VCI-SSVD was reviewed by all co-authors and the draft was repeatedly circulated and discussed before it was finalized. This review identifies a large number of biochemical markers derived from CSF and blood. There is a considerable overlap of VCI-SSVD clinical symptoms with those of Alzheimer’s disease (AD). Although most of the published studies are small and their findings remain to be replicated in larger cohorts, several biomarkers have shown promise in separating VCI-SSVD from AD. These promising biomarkers are closely linked to underlying SSVD pathophysiology, namely disruption of blood-CSF and blood–brain barriers (BCB-BBB) and breakdown of white matter myelinated fibres and extracellular matrix, as well as blood and brain inflammation. The leading biomarker candidates are: elevated CSF/blood albumin ratio, which reflects BCB/BBB disruption; altered CSF matrix metalloproteinases, reflecting extracellular matrix breakdown; CSF neurofilment as a marker of axonal damage, and possibly blood inflammatory cytokines and adhesion molecules. The suggested SSVD biomarker deviations contrasts the characteristic CSF profile in AD, i.e. depletion of amyloid beta peptide and increased phosphorylated and total tau. Combining SSVD and AD biomarkers may provide a powerful tool to identify with greater precision appropriate patients for clinical trials of more homogeneous dementia populations. Thereby, biomarkers might promote therapeutic progress not only in VCI-SSVD, but also in AD.

4 January 2021 in Journal of Clinical Medicine
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ARAdrian Eugen Rosca
Adrian Eugen Rosca
Ana-Maria VlădăreanuAna-Maria Vlădăreanu
Ana-Maria Vlădăreanu
AMAlina Mititelu
Alina Mititelu
BPBogdan Ovidiu Popescu
Bogdan Ovidiu Popescu
CBCorin Badiu
Corin Badiu
LZLeon Zagrean
Leon Zagrean
Anabolic androgenic steroids (AAS), simply called “androgens”, represent the most widespread drugs used to enhance performance and appearance in a sporting environment. High-dosage and/or long-term AAS administration has been associated frequently with significant alterations in the cardiovascular system, some of these with severe endpoints. The induction of a prothrombotic state is probably the most life-threatening consequence, suggested by numerous case reports in AAS-abusing athletes, and by a considerable number of human and animal studies assessing the influence of exogenous androgens on hemostasis. Despite over fifty years of research, data regarding the thrombogenic potential of exogenous androgens are still scarce. The main reason is the limited possibility of conducting human prospective studies. However, human observational studies conducted in athletes or patients, in vitro human studies, and animal experiments have pointed out that androgens in supraphysiological doses induce enhanced platelet activity and thrombopoiesis, leading to increased platelet aggregation. If this tendency overlaps previously existing coagulation and/or fibrinolysis dysfunctions, it may lead to a thrombotic diathesis, which could explain the multitude of thromboembolic events reported in the AAS-abusing population. The influence of androgen excess on the platelet activity and fluid–coagulant balance remains a subject of debate, urging for supplementary studies in order to clarify the effects on hemostasis, and to provide new compelling evidence for their claimed thrombogenic potential.

25 February 2022 in Journal of Clinical Medicine
Verified
Journal Article
Open access
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Dafin Fior MuresanuDafin Fior Muresanu
Dafin Fior Muresanu
LLLivia Livinț-Popa
Livia Livinț-Popa
DCDiana Chira
Diana Chira
VDVictor Dabala
Victor Dabala
Elian HapcaElian Hapca
Elian Hapca
MBMichael Brainin
Michael Brainin
Stroke is still a significant health problem that affects millions of people worldwide, as it is the second-leading cause of death and the third-leading cause of disability. Many changes have occurred in the treatment of acute ischemic stroke. Although the innovative concepts of neuroprotection and neurorecovery have been vigorously investigated in a substantial number of clinical studies in the past, only a few trials managed to increase the number of promising outcomes with regard to the multidimensional construct of brain protection and rehabilitation. In terms of pharmacological therapies with proven benefits in the post-ischemic process, drugs with neurorestorative properties are thought to be effective in both the acute and chronic phases of stroke. One significant example is Cerebrolysin, a combination of amino acids and peptides that mimic the biological functions of neurotrophic factors, which has been shown to improve outcomes after ischemic stroke, while preserving a promising safety profile. The purpose of this paper is to offer an overview on the role and impact of Cerebrolysin for ischemic stroke care, by touching on various aspects, from its complex, multimodal and pleiotropic mechanism of action, to its efficacy and safety, as well as cost effectiveness.

27 January 2022 in Journal of Clinical Medicine
Verified
Journal Article
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ARAdrian Eugen Rosca
Adrian Eugen Rosca
Ana-Maria VlădăreanuAna-Maria Vlădăreanu
Ana-Maria Vlădăreanu
RMRadu Mirica
Radu Mirica
CACristina-Mihaela Anghel-Timaru
Cristina-Mihaela Anghel-Timaru
AMAlina Mititelu
Alina Mititelu
LZLeon Zagrean
Leon Zagrean
Taurine is a semi-essential, the most abundant free amino acid in the human body, with a six times higher concentration in platelets than any other amino acid. It is highly beneficial for the organism, has many therapeutic actions, and is currently approved for heart failure treatment in Japan. Taurine has been repeatedly reported to elicit an inhibitory action on platelet activation and aggregation, sustained by in vivo, ex vivo, and in vitro animal and human studies. Taurine showed effectiveness in several pathologies involving thrombotic diathesis, such as diabetes, traumatic brain injury, acute ischemic stroke, and others. As human prospective studies on thrombosis outcome are very difficult to carry out, there is an obvious need to validate existing findings, and bring new compelling data about the mechanisms underlying taurine and derivatives antiplatelet action and their antithrombotic potential. Chloramine derivatives of taurine proved a higher stability and pronounced selectivity for platelet receptors, raising the assumption that they could represent future potential antithrombotic agents. Considering that taurine and its analogues display permissible side effects, along with the need of finding new, alternative antithrombotic drugs with minimal side effects and long-term action, the potential clinical relevance of this fascinating nutrient and its derivatives requires further consideration.

15 June 2021 in Medicina
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RRRazvan Alexandru Radu
Razvan Alexandru Radu
ETElena Terecoasa
Elena Terecoasa
CTCristina Tiu
Cristina Tiu
CGCristina Ghiță
Cristina Ghiță
ANAlina Ioana Nicula
Alina Ioana Nicula
BPBogdan Ovidiu Popescu
Bogdan Ovidiu Popescu
Background and Objectives: Neutrophil-to-lymphocyte ratio (NLR), a very low cost, widely available marker of systemic inflammation, has been proposed as a potential predictor of short-term outcome in patients with intracerebral hemorrhage (ICH). Methods: Patients with ICH admitted to the Neurology Department during a two-year period were screened for inclusion. Based on eligibility criteria, 201 patients were included in the present analysis. Clinical, imaging, and laboratory characteristics were collected in a prespecified manner. Logistic regression models and receiver operating characteristics (ROC) curves were used to assess the performance of NLR assessed at admission (admission NLR) and 72 h later (three-day NLR) in predicting in-hospital death. Results: The median age of the study population was 70 years (IQR: 61–79), median admission NIHSS was 16 (IQR: 6–24), and median hematoma volume was 13.7 mL (IQR: 4.6–35.2 mL). Ninety patients (44.8%) died during hospitalization, and for 35 patients (17.4%) death occurred during the first three days. Several common predictors were significantly associated with in-hospital mortality in univariate analysis, including NLR assessed at admission (OR: 1.11; 95% CI: 1.04–1.18; p = 0.002). However, in multivariate analysis admission, NLR was not an independent predictor of in-hospital mortality (OR: 1.04; 95% CI: 0.9–1.1; p = 0.3). The subgroup analysis of 112 patients who survived the first 72 h of hospitalization showed that three-day NLR (OR: 1.2; 95% CI: 1.09–1.4; p < 0.001) and age (OR: 1.05; 95% CI: 1.02–1.08; p = 0.02) were the only independent predictors of in-hospital mortality. ROC curve analysis yielded an optimal cut-off value of three-day NLR for the prediction of in-hospital mortality of ≥6.3 (AUC = 0.819; 95% CI: 0.735–0.885; p < 0.0001) and Kaplan–Meier analysis proved that ICH patients with three-day NLR ≥6.3 had significantly higher odds of in-hospital death (HR: 7.37; 95% CI: 3.62–15; log-rank test; p < 0.0001). Conclusion: NLR assessed 72 h after admission is an independent predictor of in-hospital mortality in ICH patients and could be widely used in clinical practice to identify the patients at high risk of in-hospital death. Further studies to confirm this finding are needed.

27 August 2019 in Medicina
Verified
Journal Article
Open access
PDF file
ARAdrian Eugen Rosca
Adrian Eugen Rosca
Camelia Sorina StancuCamelia Sorina Stancu
Camelia Sorina Stancu
CBCorin Badiu
Corin Badiu
BPBogdan Ovidiu Popescu
Bogdan Ovidiu Popescu
RMRadu Mirica
Radu Mirica
Ana-Maria ZagreanAna-Maria Zagrean
Ana-Maria Zagrean
Background and Objectives: Anabolic androgenic steroids (AAS), used as a therapy in various diseases and abused in sports, are atherogenic in supraphysiological administration, altering the plasma lipid profile. Taurine, a conditionally-essential amino acid often used in dietary supplements, was acknowledged to delay the onset and progression of atherogenesis, and to mitigate hyperlipidemia. The aim of the present study was to verify if taurine could prevent the alterations induced by concomitant chronic administration of high doses of AAS nandrolone decanoate (DECA) in rats. Materials and Methods: Thirty-two male Wistar rats, assigned to 4 equal groups, were treated for 12 weeks either with DECA (A group), taurine (T group), both DECA and taurine (AT group) or vehicle (C group). Plasma triglycerides (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), hepatic triglycerides (TGh) and liver non-esterified fatty acids (NEFA) were then determined. Results: DECA elevated TG level in A group vs. control (p = 0.01), an increase prevented by taurine association in AT group (p = 0.04). DECA decreased HDL-C in A group vs. control (p = 0.02), while taurine tended to increase it in AT group. DECA decreased TGh (p = 0.02) in A group vs. control. Taurine decreased TGh in T (p = 0.004) and AT (p < 0.001) groups vs. control and tended to lower NEFA (p = 0.08) in AT group vs. A group. Neither DECA, nor taurine influenced TC and LDL-C levels. Conclusions: Taurine partially prevented the occurrence of DECA negative effects on lipid profile, suggesting a therapeutic potential in several conditions associated with chronic high levels of plasma androgens, such as endocrine disorders or AAS-abuse.