Zoran Popa

Dr. Zoran Popa


Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

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

Representative Publications

View All Publications
7 April 2022 in Molecular and Cellular Biochemistry
Verified
Journal Article
Open access
PDF file
ABAnca M. Bînă
Anca M. Bînă
OAOana M. Aburel
Oana M. Aburel
VAVlad F. Avram
Vlad F. Avram
TLTheia Lelcu
Theia Lelcu
ALAdina V. Lința
Adina V. Lința
OCOctavian M. Crețu
Octavian M. Crețu
Preeclampsia (PE) is a major complication of pregnancy with partially elucidated pathophysiology. Placental mitochondrial dysfunction has been increasingly studied as major pathomechanism in both early- and late-onset PE. Impairment of mitochondrial respiration in platelets has recently emerged as a peripheral biomarker that may mirror organ mitochondrial dysfunction in several acute and chronic pathologies. The present study was purported to assess mitochondrial respiratory dys/function in both platelets and placental mitochondria in PE pregnancies. To this aim, a high-resolution respirometry SUIT (Substrate-Uncoupler-Inhibitor-Titration) protocol was adapted to assess complex I (glutamate + malate)- and complex II (succinate)-supported respiration. A decrease in all respiratory parameters (basal, coupled, and maximal uncoupled respiration) in peripheral platelets was found in preeclamptic as compared to healthy pregnancies. At variance, placental mitochondria showed a dichotomous behavior in preeclampsia in relation to the fetal birth weight. PE pregnancies with fetal growth restriction were associated with decreased in coupled respiration (oxidative phosphorylation/OXPHOS capacity) and maximal uncoupled respiration (electron transfer/ET capacity). At variance, these respiratory parameters were increased for both complex I- and II-supported respiration in PE pregnancies with normal weight fetuses. Large randomized controlled clinical studies are needed in order to advance our understanding of mitochondrial adaptive vs. pathological changes in preeclampsia.

30 December 2024 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
OGOana Maria Gorun
Oana Maria Gorun
ARAdrian Claudiu Ratiu
Adrian Claudiu Ratiu
CCCosmin Ioan Citu
Cosmin Ioan Citu
SCSimona Cerbu
Simona Cerbu
Florin GorunFlorin Gorun
Florin Gorun
AMAndrei Gheorghe Marius Motoc
Andrei Gheorghe Marius Motoc
Background/Objectives: Chronic inflammation plays a critical role in pelvic pain among endometriosis patients. This study examines the association between inflammatory markers—specifically the neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR)—and pelvic pain in endometriosis. Methods: We conducted a retrospective analysis of endometriosis patients, assessing NLR and PLR levels in those with and without pelvic pain. Diagnostic utility was evaluated using ROC curves, and logistic regression determined associations between these markers, pain presence, and endometriosis severity. Results: Patients with pelvic pain had significantly higher median levels of both NLR and PLR (p < 0.05). NLR demonstrated moderate diagnostic accuracy with an AUC of 0.63, sensitivity of 59%, and specificity of 71% at a cut-off of 1.85. PLR, with a cut-off of 139.77, showed an AUC of 0.60, with a specificity of 82% and sensitivity of 40%, indicating better utility for excluding pain. Logistic regression analysis revealed that NLR > 1.85 was significantly associated with pelvic pain (OR = 3.06, 95% CI: 1.45–6.49, p = 0.003), as was PLR > 139.77 (OR = 2.84, 95% CI: 1.18–6.82, p = 0.02). Advanced rASRM stages (III and IV) also correlated with elevated NLR and PLR values. Conclusions: Elevated NLR and PLR are associated with pelvic pain and advanced stages of endometriosis, suggesting these ratios are potential markers for assessing inflammation and disease severity. Further studies should explore combining NLR and PLR with other biomarkers to improve diagnostic accuracy in endometriosis.

13 June 2022 in Molecular and Cellular Biochemistry
Verified
Journal Article
Closed access
PDF file
ABAnca M. Bînă
Anca M. Bînă
ASAdrian Sturza
Adrian Sturza
IIIoana Iancu
Ioana Iancu
AMAdelina G. Mocanu
Adelina G. Mocanu
EBElena Bernad
Elena Bernad
OCOctavian M. Crețu
Octavian M. Crețu

19 February 2024 in Microorganisms
Verified
Journal Article
Open access
PDF file
PCProdan Catalin
Prodan Catalin
Felix BratosinFelix Bratosin
Felix Bratosin
RFRoxana Folescu
Roxana Folescu
EBEstera Boeriu
Estera Boeriu
ZPZoran Popa
Zoran Popa
AIAdrian Cosmin Ilie
Adrian Cosmin Ilie
This study conducted a detailed analysis of the vaginal microbiota in pregnant women to explore its correlation with preterm birth (PTB) outcomes. The primary objective was to identify microbial variations associated with increased PTB risk. Secondary objectives included investigating how changes in microbial composition relate to the local immune environment and PTB. Utilizing a retrospective case–control design, the study involved pregnant women with liveborn infants between 2019 and 2023. In total, 89 women who delivered preterm and 106 term deliveries were included. Data collection focused on third-trimester vaginal cultures. Statistically significant differences were observed between the preterm and full-term groups in several areas. The median white blood cell count (10.2 × 103/mm3 vs. 7.6 × 103/mm3, p = 0.009) and neutrophil count (7.2 × 103/mm3 vs. 5.1 × 103/mm3, p < 0.001) were higher in the preterm group. Vaginal pH was also elevated in preterm births (5.6 vs. 4.4, p < 0.001), with a higher prevalence of bacterial vaginosis (29.2% vs. 12.3%, p = 0.001) as indicated by the Nugent Score. The study noted a significant association of PTB with the presence of Candida spp. (OR = 1.84, p = 0.018), Gardnerella vaginalis (OR = 2.29, p = 0.003), Mycoplasma hominis (OR = 1.97, p = 0.007), and Ureaplasma urealyticum (OR = 2.43, p = 0.001). Conversely, a reduction in Lactobacillus spp. correlated with a decreased PTB risk (OR = 0.46, p = 0.001). The study provides compelling evidence that specific vaginal microbiota components, particularly certain pathogenic bacteria and an altered Lactobacillus profile, are significantly associated with PTB risk. These findings highlight the potential of targeting microbial factors in strategies aimed at reducing PTB rates. Further research is necessary to fully understand the complex interplay between microbial dynamics, host immunity, and PTB outcomes.

8 March 2023 in Children
Verified
Journal Article
Open access
PDF file
IHIngrid Henriette Iris Hrubaru
Ingrid Henriette Iris Hrubaru
AMAndrei Gheorghe Marius Motoc
Andrei Gheorghe Marius Motoc
CDCatalin Dumitru
Catalin Dumitru
Felix BratosinFelix Bratosin
Felix Bratosin
RFRoxana Manuela Fericean
Roxana Manuela Fericean
ZPZoran Popa
Zoran Popa
Premature birth is a worldwide health issue, posing a high mortality risk for newborns, as well as causing emotional and financial difficulties, and long-term health issues for patients. Identifying effective predictors for preterm birth is essential for prolonging gestation or improving obstetric care. As invasive methods are costly, risky, and not universally available, we aim to assess the predictive capacity of various serum parameters in pregnant women during the third trimester, as a non-invasive alternative. Based on previous studies, it was hypothesized that hemoglobin, the association of hemoglobin, albumin, lymphocyte, and platelets’ (HALP) score, and coagulation parameters such as the prothrombin time (PT), activated partial thromboplastin clotting time (aPTT), D-dimers, and fibrinogen to albumin ratio (FAR) have significant prediction capabilities. With a retrospective design, a total of 161 patients with a history of preterm birth were included in the analysis, being matched 1:1 with a control group of women who gave birth at term. All laboratory samples were collected during the third trimester of pregnancy. The computed area under the curve (AUC) ranged between 0.600 and 0.700 in all six studied parameters, suggesting a fair discrimination. The highest predictive value for preterm birth was observed to be represented by the HALP score with AUC = 0.680 and the highest sensitivity (75%, p-value = 0.001). The highest specificity was achieved by the prothrombin time (69%), and the HALP score was also 69%. The FAR score had an AUC of 0.646, with a sensitivity of 68%, and specificity of 64% (p-value = 0.020). All other variables were significant estimates for the risk of preterm birth, although with lower accuracy. Pregnant women with a hemoglobin level below 12.0 g/dL had a 3.28 higher likelihood of giving birth prematurely. A prothrombin time below 12.5 s determined a 2.11 times higher risk of preterm birth. Similarly, the aPTT below 25 s was linked with 3.24 higher odds of giving birth prematurely. However, the strongest predictors were the D-dimers above 250 ng/mL (OR = 4.26), the FAR score below 0.1, with an odds ratio of 5.30, and the HALP score with a 6.09 OR for a cut-off value above 24. It is important to determine these parameters in pregnant women at risk for giving birth prematurely, but further external validation is required to confirm these findings.

20 August 2022 in Children
Verified
Journal Article
Open access
PDF file
Ioana Mihaiela CiucaIoana Mihaiela Ciuca
Ioana Mihaiela Ciuca
MDMihaela Dediu
Mihaela Dediu
DPDiana Popin
Diana Popin
LPLiviu Laurentiu Pop
Liviu Laurentiu Pop
LTLiviu Athos Tamas
Liviu Athos Tamas
ZPZoran Popa
Zoran Popa
In cystic fibrosis (CF), the respiratory disease is the main factor that influences the outcome and the prognosis of patients, bacterial infections being responsible for severe exacerbations. The etiology is often multi-microbial and with resistant strains. The aim of this paper is to present current existing antibiotherapy solutions for CF-associated infections in order to offer a reliable support for individual, targeted, and specific treatment. The inclusion criteria were studies about antibiotherapy in CF pediatric patients. Studies involving adult patients or those with only in vitro results were excluded. The information sources were all articles published until December 2021, in PubMed and ScienceDirect. A total of 74 studies were included, with a total number of 26,979 patients aged between 0–18 years. We approached each pathogen individual, with their specific treatment, comparing treatment solutions proposed by different studies. Preservation of lung function is the main goal of therapy in CF, because once parenchyma is lost, it cannot be recovered. Early personalized intervention and prevention of infection with reputable germs is of paramount importance, even if is an asymmetrical challenge. This research received no external funding.