Oana Silvana Sarau

Dr. Oana Silvana Sarau


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

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

Representative Publications

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23 May 2024 in Nutrients
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Journal Article
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OSOana Silvana Sarau
Oana Silvana Sarau
HRHari Charan Rachabattuni
Hari Charan Rachabattuni
SGSai Teja Gadde
Sai Teja Gadde
SDSai praveen Daruvuri
Sai praveen Daruvuri
LMLarisa Mihaela Marusca
Larisa Mihaela Marusca
DHDelia Ioana Horhat
Delia Ioana Horhat
Recent studies hypothesized that vitamin D supplementation and subsequent higher 25(OH)D serum levels could protect against respiratory infections in children. This cross-sectional study, conducted from May 2022 to December 2023 in Timisoara, Romania, aimed to evaluate the potential influence of vitamin D supplementation on the incidence of respiratory infections among preschool-age children. This study examined 215 children over 18 months who were split into a group of patients with recurrent respiratory infections (n = 141) and another group of patients with only one respiratory tract infection in the past 12 months (n = 74). Patients were evaluated based on their serum vitamin D levels 25(OH)D, demographic characteristics, and health outcomes. The study identified that preschool-age children with recurrent infections had significantly lower mean vitamin D concentrations (24.5 ng/mL) compared to the control group (29.7 ng/mL, p < 0.001). Additionally, a higher proportion of vitamin D deficiency was observed among children with recurrent infections in the past 12 months. Notably, vitamin D supplementation above 600 IU/week significantly reduced the likelihood of respiratory infections, evidenced by an odds ratio of 0.523 (p < 0.001), indicating that preschool-age children receiving a dose of vitamin D higher than 600 IU/week were about half as likely to experience respiratory infections compared to those who did not. Furthermore, no significant associations were found between sun exposure, daily sunscreen use, and the incidence of respiratory infections. Conclusively, this study underscores the potential role of vitamin D in helping the immune system against respiratory infections in preschool-age children. The observed protective effect of vitamin D supplementation suggests a potential public health strategy to mitigate the incidence of respiratory infections in preschool children on top of the already known benefits.

4 June 2024 in Inorganics
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Journal Article
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OSOana Silvana Sarau
Oana Silvana Sarau
Elena Alina MoacaElena Alina Moaca
Elena Alina Moaca
A(Alexandra Denisa Semenescu (Scurtu)
Alexandra Denisa Semenescu (Scurtu)
RVRaluca Voda
Raluca Voda
Alex Robert JijieAlex Robert Jijie
Alex Robert Jijie
CAChevereşan Adelina
Chevereşan Adelina
Silver nanoparticles (AgNPs) were successfully synthesized via the biological route using a 1 M silver nitrate (AgNO3) aqueous solution and an ethanolic peel extract of Punica granatum (Pg), at 60 °C. The physicochemical analysis revealed the formation of green synthesized Pg-AgNPs with a semi-spherical shape, non-uniformly distributed, and a particle size distribution between 5 and 100 nm. As regards the preliminary in vitro toxicological screening, the green synthesized Pg-AgNPs did not significantly affect the neonatal BALB/c epidermal cells’ viability (JB6 Cl 41-5a) at lower concentrations and did not produce visible changes in the morphology of the JB6 Cl 41-5a cells. In contrast, at higher concentrations (>50 μg/mL), the green Pg-AgNPs exhibited an important decrease in cell viability and confluency. In addition, the impact of Pg-AgNPs on cell membrane integrity suggests a potential cytotoxic effect. Contrary to the in vitro assays, after the evaluation of the anti-irritant effect in ovo, the lower concentration of Pg-AgNPs (10 μg/mL) produced hemorrhage and lysis when applied to the chorioallantoic membrane, while at 50 μg/mL, only slight coagulation was observed. Therefore, regarding the in ovo toxicological screening, the higher concentration of the Pg-AgNPs exhibited a better safety profile compared to the lower concentration, as indicated by the irritation score.

16 August 2024 in Cancers
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Journal Article
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TCTrandafir Cornelia
Trandafir Cornelia
RCRaluca Maria Cloșca
Raluca Maria Cloșca
MMMarioara Mot
Marioara Mot
OSOana Silvana Sarau
Oana Silvana Sarau
CSCristian Andrei Sarau
Cristian Andrei Sarau
Laurentiu Vasile SimaLaurentiu Vasile Sima
Laurentiu Vasile Sima
Sinonasal mucosal melanoma originates from melanocytes and it is a rare malignancy in the sinonasal tract. It is an aggressive melanocytic neoplasm with a very poor prognosis. The symptoms are nonspecific and the diagnosis is delayed, usually until the advanced stages of the disease. The current study performs a correlation between the histopathological aspects of sinonasal mucosal melanoma and different types of immune cells present in the microenvironment, with prognostic and therapeutic implications. The endpoint is to quantify the cellular immune microenvironment and correlate it with patient survival. This study presents nine cases of primary sinonasal mucosal melanomas diagnosed at the Emergency City Hospital Timisoara, Romania during a period of 15 years. The histopathological examination was performed in the Department of Pathology of the same hospital, using morphological hematoxylin–eosin staining. Additional immunohistochemical reactions were performed to confirm the diagnosis and evaluate the components of the tumor immune microenvironment. This study identifies eosinophils, macrophages, natural killer cells and plasma cells as favorable prognostic factors. Therefore, a CD8:CD4 ratio of more than 3 is correlated with a good response to PD-1 inhibitor therapy.

14 May 2025 in Microorganisms
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Journal Article
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ABAdela-Teodora Benea
Adela-Teodora Benea
MTMirela Turaiche
Mirela Turaiche
OROvidiu Rosca
Ovidiu Rosca
EAElena Hogea a
Elena Hogea a
MSMadalina-Ianca Suba*
Madalina-Ianca Suba*
CSCristian Andrei Sarau
Cristian Andrei Sarau
Urinary tract infections (UTIs) remain a leading cause of healthcare-associated morbidity, particularly in patients with indwelling urinary catheters. This study aimed to compare catheter-associated (CAUTIs) and non-catheter-associated UTIs of the lower tract among hospitalized adults in Western Romania, identify potential predictors of prolonged hospital stay, and explore the interplay of inflammatory markers and clinical outcomes. We retrospectively examined 130 patients diagnosed with UTIs from 2020 to 2024. Demographic data, comorbidities, laboratory parameters (CRP, procalcitonin, fibrinogen, white blood cell counts), and microbiology results were assessed. Patients were divided into CAUTI (n = 72) and non-catheter UTI (n = 58) groups. CAUTI patients had a significantly longer mean hospital stay (13.9 ± 4.3 vs. 11.7 ± 3.8 days, p = 0.01). E. coli (29.2%), Klebsiella pneumoniae (18.5%), and mixed flora (11.5%) predominated overall, with Pseudomonas aeruginosa trending higher in CAUTIs (15.3% vs. 5.2%). Diabetic status correlated with higher CRP (54.7 ± 18.2 vs. 46.9 ± 15.7 mg/dL, p = 0.04) and increased intensive care unit (ICU) admission (23.5% vs. 9.4%, p = 0.03). In a subgroup of 65 patients, CRP demonstrated a moderate positive correlation with length of stay (r = 0.47, p = 0.02). Logistic regression indicated that CAUTI was associated with 2.3-fold higher odds of extended hospitalization (95% CI: 1.2–4.4, p = 0.02), adjusting for age, diabetes, and CRP levels. CAUTIs are linked to more resistant pathogens, longer hospitalizations, and potentially greater clinical complications. Diabetes further compounds risk, as reflected in higher inflammatory markers and ICU admissions.

2 December 2025 in Journal of Clinical Medicine
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Journal Article
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ABAdela-Teodora Benea
Adela-Teodora Benea
DPDaniel Porav-Hodade
Daniel Porav-Hodade
MTMirela Turaiche
Mirela Turaiche
OROvidiu Rosca
Ovidiu Rosca
Daniel Florin LighezanDaniel Florin Lighezan
Daniel Florin Lighezan
CSCristian Andrei Sarau
Cristian Andrei Sarau
Background/Objectives: Obstructive urosepsis mandates rapid source control, yet actionable time-to-decompression (TTD) thresholds and the influence of diversion route remain debated. This review synthesized evidence on TTD, early outcomes, and predictive biomarkers. Methods: Following PRISMA-2020, ten studies met eligibility: three large administrative cohorts and seven clinical series/trials comparing outcomes by TTD and/or initial decompression (retrograde stent [RUS] vs. percutaneous nephrostomy [PCN]) and reporting biomarkers. Results: Delays were consistently harmful. In a national cohort, a TTD of ≥ 2 days increased in-hospital mortality (adjusted OR, 1.29; 95% CI, 1.03–1.63). Another analysis showed mortality of 0.16% with ≤48 h vs. 0.47% when delayed (derived OR, 0.43; p = 0.044). Absence of decompression yielded the highest mortality (19.2% vs. 8.82%; OR, 2.6; 95% CI, 1.9–3.7). Septic shock remained frequent despite low crude mortality in clinical series: 20.8% and 33.3% across two cohorts. Post-decompression urosepsis occurred in 18.7% in a randomized study and was associated with pyonephrosis and higher procalcitonin (PCT). An ED cohort showed that earlier stenting reduced length of stay (≤6 h: 35.6 h vs. 71.6 h, p = 0.01; ≤10 h: 45.7 h vs. 82.4 h, p = 0.04). Modality effects were modest; one cohort reported higher ICU use with PCN vs. RUS (OR, 3.23; 95% CI, 1.24–8.41), likely reflecting confounding by indication. Conclusions: Across designs, timeliness—not device choice—was the dominant determinant of early outcomes. Biomarkers (notably, PCT) and imaging features can prioritize ultra-early decompression.

29 June 2024 in Clinics and Practice
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Journal Article
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AKAndreea Mihaela Kis
Andreea Mihaela Kis
RBRoxana Buzatu
Roxana Buzatu
LCLazar Alexandru Chisavu
Lazar Alexandru Chisavu
MMMarioara Mot
Marioara Mot
CBClaudia Borza
Claudia Borza
SASimona Ardelean
Simona Ardelean
Background: Diagnosis and treatment for pharyngeal cancer are decisive in determining prognosis. Diagnosis delays are frequent, representing a significant cause of avoidable mortality, and an important factor in subpar survival across the continuous HNC care delivery. Methods: The present study represents a retrospective analysis of medical records from Western Romania, which included 180 patients, to evaluate the impact of time-to-treatment delay on patients diagnosed with pharyngeal cancer. The data analyses were performed using the Kaplan–Meier method R (version 3.6.3) packages, including tidyverse, final-fit, mcgv, survival, stringdist, janitor, and Hmisc. Results: The mean days from diagnosis until the end of treatment were higher for the nasopharynx group. Cox regression analysis regarding diagnosis to treatment duration categories showed an increased risk mortality by 3.11 times (95%CI: 1.51–6.41, p = 0.0021) with a Harrell’s C-index of 0.638 (95%CI: 0.552–0.723). The hypopharynx and oropharynx locations increased risk mortality by 4.59 (95%CI: 1.55–13.55) and 5.49 times (95%CI: 1.79–16.81) compared to the nasopharynx location. Conclusions: The findings of this study led to the conclusion that it seems there is a trend of mortality risk for oropharynx and hypopharynx cancers due to delays in the time to treatment over 70 days, standing as a basis for further research as there is an imperative need for prospective multicenter studies.