Razvan Constantin Vonica

Dr. Razvan Constantin Vonica


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

View All Publications
Verified
Journal Article
Open access
PDF file
CFCatalin Vladut Ionut Feier
Catalin Vladut Ionut Feier
RVRazvan Constantin Vonica
Razvan Constantin Vonica
AFAlaviana-Monique Faur
Alaviana-Monique Faur
DSDiana-Raluca Streinu
Diana-Raluca Streinu
Muntean CalinMuntean Calin
Muntean Calin
The broadening application of glucagon-like peptide (GLP)-1 receptor agonists, specifically semaglutide (Ozempic) for the management of diabetes and obesity brings a critical need to evaluate its safety profile, considering estimates of up to 20 million prescriptions per year in the US until 2035. This systematic review aims to assess the incidence of thyroid cancer and detail the spectrum of adverse events associated with semaglutide, focusing on its implications for patient care. Through a systematic search of PubMed, Scopus, and Embase databases up to December 2023, ten randomized controlled trials (RCTs) involving 14,550 participants, with 7830 receiving semaglutide, were analyzed, with an additional number of 18 studies that were separately discussed because they reported data from the same RCTs. The review focused on thyroid cancer incidence, gastrointestinal symptoms, and other significant adverse events attributed to semaglutide. The incidence of thyroid cancer in semaglutide-treated patients was less than 1%, suggesting no significant risk. Adverse events were predominantly gastrointestinal, including nausea (2.05% to 19.95%) and diarrhea (1.4% to 13%). Nasopharyngitis and vomiting were also notable, with mean prevalences of 8.23% and 5.97%, respectively. Other adverse events included increased lipase levels (mean of 6.5%), headaches (mean prevalence of 7.92%), decreased appetite (reported consistently at 7%), influenza symptoms (mean prevalence of 5.23%), dyspepsia (mean prevalence of 5.18%), and constipation (mean prevalence of 6.91%). Serious adverse events varied from 7% to 25.2%, highlighting the need for vigilant patient monitoring. These findings underscore the gastrointestinal nature of semaglutide’s adverse events, which, while prevalent, did not significantly deter from its clinical benefits in the treatment landscape. This systematic review provides a comprehensive assessment of semaglutide’s safety profile, with a focus on gastrointestinal adverse events and a low incidence of thyroid cancer. Despite the prevalence of gastrointestinal symptoms, semaglutide remains an efficacious option for managing diabetes and obesity. The detailed characterization of adverse events underscores the importance of monitoring and managing these effects in clinical practice, excluding the hypothesis of carcinogenesis.

Verified
Journal Article
Open access
PDF file
CFCatalin Vladut Ionut Feier
Catalin Vladut Ionut Feier
VGVasile Gaborean
Vasile Gaborean
IFIonut Flaviu Faur
Ionut Flaviu Faur
RVRazvan Constantin Vonica
Razvan Constantin Vonica
AFAlaviana-Monique Faur
Alaviana-Monique Faur
Muntean CalinMuntean Calin
Muntean Calin
Background and Objectives: Postoperative pancreatic fistula and post-hepatectomy liver failure remain significant complications after HPB surgery; however, superficial surgical site infection (SSI) is the most frequent wound-related complication. Closed-incision negative-pressure wound therapy (ciNPWT) has been proposed to reduce superficial contamination, yet no liver-focused quantitative synthesis exists. We aimed to evaluate the effectiveness and safety of prophylactic ciNPWT after hepatopancreatobiliary (HPB) surgery. Methods: MEDLINE, Embase, and PubMed were searched from inception to 30 April 2025. Randomized and comparative observational studies that compared ciNPWT with conventional dressings after elective liver transplantation, hepatectomy, pancreatoduodenectomy, and liver resections were eligible. Two reviewers independently screened, extracted data, and assessed risk of bias (RoB-2/ROBINS-I). A random-effects Mantel–Haenszel model generated pooled risk ratios (RRs) for superficial SSI; secondary outcomes were reported descriptively. Results: Twelve studies (seven RCTs, five cohorts) encompassing 15,212 patients (3561 ciNPWT; 11,651 control) met the inclusion criteria. Device application lasted three to seven days in all trials. The pooled analysis demonstrated a 29% relative reduction in superficial SSI with ciNPWT (RR 0.71, 95% CI 0.63–0.79; p < 0.001) with negligible heterogeneity (I2 0%). Absolute risk reduction ranged from 0% to 13%, correlating positively with the baseline control-group SSI rate. Deep/organ-space SSI (RR 0.93, 95% CI 0.79–1.09) and 90-day mortality (RR 0.94, 95% CI 0.69–1.28) were unaffected. Seven studies documented a 1- to 3-day shorter median length of stay; only two reached statistical significance. Device-related adverse events were rare (one seroma, no skin necrosis). Conclusions: Prophylactic ciNPWT safely reduces superficial SSI after high-risk HPB surgery, with the greatest absolute benefit when baseline SSI risk exceeds ≈10%. Its influence on deep infection and mortality is negligible.

19 September 2025 in Diagnostics
Verified
Journal Article
Open access
PDF file
CFCatalin Vladut Ionut Feier
Catalin Vladut Ionut Feier
Florin GramaFlorin Grama
Florin Grama
GMGeorgiana Viorica Moise
Georgiana Viorica Moise
RVRazvan Constantin Vonica
Razvan Constantin Vonica
VGVasile Gaborean
Vasile Gaborean
Muntean CalinMuntean Calin
Muntean Calin
Background: Systemic inflammatory indices are increasingly used to predict prognosis in colorectal cancer (CRC), yet direct comparisons between colon cancer (CC) and rectal cancer (RC) remain limited. Methods: We conducted a retrospective matched-cohort study including 296 patients (148 with CC and 148 with RC) surgically treated between January 2018 and December 2024. Patients were matched by tumor stage, sex, and age (±3 years). Preoperative blood samples were used to calculate several inflammatory markers, including Neutrophil-to-Lymphocyte Ratio (NLR), Platelet-to-Lymphocyte Ratio (PLR), Monocyte-to-Lymphocyte Ratio (MLR), Systemic Inflammation Response Index (SIRI), Systemic Immune-Inflammation Index (SII), and Aggregate Index of Systemic Inflammation (AISI). Subgroup analyses were performed based on the Charlson Comorbidity Index (>3 vs. ≤3), surgical context (elective vs. emergency), and tumor stage (T1–T2 vs. T3–T4). Results: Colon cancer patients exhibited significantly higher levels of systemic inflammation compared to those with rectal cancer, with notable differences in NLR (3.99 vs. 2.84, p < 0.001), PLR (219.8 vs. 163.3, p < 0.001), SIRI (3.7 vs. 1.91, p = 0.004), SII (1533.8 vs. 847.8, p < 0.001), and AISI (1714.7 vs. 593.6, p = 0.009). These differences remained statistically significant in key subgroups. In elective surgeries, CC patients had elevated PLR (p < 0.001), SIRI (p = 0.003), SII (p < 0.001), and AISI (p = 0.013). Among patients with advanced tumors (T3–T4), CC was associated with higher SII (p < 0.001), AISI (p = 0.008), PLR (p < 0.001), and SIRI (p = 0.004). For those with a Charlson index > 3, CC patients showed significantly higher PLR (p < 0.001), NLR (p < 0.001) and SIRI (p = 0.001). Conclusions: colon cancer presents with a markedly stronger systemic inflammatory response than rectal cancer, particularly in patients with advanced disease, elective surgical treatment, and higher comorbidity burden. These findings suggest that indices such as SIRI, SII, and PLR may serve as valuable stratification tools beyond tumor location in CRC.

16 November 2024 in Cancers
Verified
Journal Article
Open access
PDF file
RVRazvan Constantin Vonica
Razvan Constantin Vonica
Anca ButucaAnca Butuca
Anca Butuca
ATAndreea Loredana Vonica Tincu
Andreea Loredana Vonica Tincu
CMClaudiu Morgovan
Claudiu Morgovan
MPManuela Pumnea
Manuela Pumnea
Felicia Gabriela GligorFelicia Gabriela Gligor
Felicia Gabriela Gligor
Capecitabine (CAP) is one of the most commonly prescribed fluoropyrimidines in oncology, especially in the treatment of colon cancer. Cardiac toxicity is a severe and potentially lethal adverse drug reaction (ADR) against fluoropyrimidines. Cardiac ADRs, such as myocardial infarction (MI), heart failure (HF), arrhythmias, and a number of cardiomyopathies, are reported for these molecules. To have a better understanding of the risk–benefit ratio of colon cancer therapy, a pharmacovigilance study of real-world evidence of the cardiac toxicity of antineoplastic agents is required. Aim: This post-marketing research on CAP aims to assess the risk of cardiac toxicity. Five other antitumor drugs used in colorectal cancer, i.e., 5-fluorouracil (5-FU), irinotecan (IRI), oxaliplatin (OX), bevacizumab (BEV) and panitumumab (PAN), were also studied to create a relative profile of observed cardiotoxicity. Methods: A retrospective study based on reports submitted in the EudraVigilance (EV) database until 28 July 2024 was conducted. Using the aggregated data from EV, a descriptive analysis and disproportionality analysis of cardiac ADRs induced by fluoropyrimidines were performed. To evaluate the disproportionality of the signals, Reporting Odds Ratio (ROR) and 95% confidence interval (95% CI) were calculated by comparison with other drugs used in colorectal cancer: 5-FU, IRI, OX, BEV, and PAN. Results: “Cardiac disorders” represent 3.4% of the total reports for CAP. The value is comparable to 5-FU, but higher than for other drugs. t was observed that there are no significant differences in the occurrence of cardiac ADRs in patients exposed to CAP and 5-FU treatments, and in particular MI and HF. Compared to 5-FU, which could produce cardiac arrythmias with a higher probability than all other drugs, CAP has a higher probability of reporting this ADR only in comparison with IRI (ROR: 1.2971; 95% CI: 1.0196-1.6502). Conclusions: CAP induces adverse cardiovascular reactions, especially MI, HF, and cardiomyopathies. Arrhythmias have been shown to be side effects more frequent associated with 5-FU than with CAP. The results emphasize the need for a rigorous cardiovascular monitoring of patients following treatment with CAP or 5-FU and especially for those with pre-existing cardiac pathology.

16 April 2024 in Diseases
Verified
Journal Article
Open access
PDF file
CFCatalin Vladut Ionut Feier
Catalin Vladut Ionut Feier
Muntean CalinMuntean Calin
Muntean Calin
AFAlaviana-Monique Faur
Alaviana-Monique Faur
RVRazvan Constantin Vonica
Razvan Constantin Vonica
RBRoxana Andiana Blidari
Roxana Andiana Blidari
SOSorin Olariu
Sorin Olariu
Gastric cancer ranks as the fifth most common cancer, and the assessment of inflammatory biomarkers in these patients holds significant promise in predicting prognosis. Therefore, data from patients undergoing surgical intervention for gastric cancer over a 7-year period were analyzed. This study was retrospective and involved a preoperative investigation of six inflammatory parameters derived from complete blood counts. Statistical analysis revealed a significant increase in the leucocyte-to-monocyte ratio (LMR) (p = 0.048), along with a significant decrease in the number of lymphocytes and monocytes compared to patients with successful discharge. Taking into consideration patients undergoing emergency surgery, a significant increase in the LMR (p = 0.009), neutrophil-to-lymphocyte ratio (NLR) (p = 0.004), Aggregate Index of Systemic Inflammation (AISI) (p = 0.01), and Systemic Immune-Inflammation Index (SII) (p = 0.028) was observed. Regarding relapse, these patients exhibited significant increases in AISI (p = 0.032) and SII (p = 0.047). Inflammatory biomarkers represent a valuable tool in evaluating and predicting the prognosis of patients with gastric cancer.

21 November 2024 in Viruses
Verified
Journal Article
Open access
PDF file
APALITEIA-MARIA PACNEJER
ALITEIA-MARIA PACNEJER
Anca ButucaAnca Butuca
Anca Butuca
CDCarmen Dobrea
Carmen Dobrea
A(Anca-Maria Arseniu (Borcea)
Anca-Maria Arseniu (Borcea)
AFAdina Frum
Adina Frum
CRISTINA ADRIANA DEHELEANCRISTINA ADRIANA DEHELEAN
CRISTINA ADRIANA DEHELEAN
The COVID-19 outbreak, caused by the SARS-CoV-2 virus, was linked to significant neurological and psychiatric manifestations. This review examines the physiopathological mechanisms underlying these neuropsychiatric outcomes and discusses current management strategies. Primarily a respiratory disease, COVID-19 frequently leads to neurological issues, including cephalalgia and migraines, loss of sensory perception, cerebrovascular accidents, and neurological impairment such as encephalopathy. Lasting neuropsychological effects have also been recorded in individuals following SARS-CoV-2 infection. These include anxiety, depression, and cognitive dysfunction, suggesting a lasting impact on mental health. The neuroinvasive potential of the virus, inflammatory responses, and the role of angiotensin-converting enzyme 2 (ACE2) in neuroinflammation are critical factors in neuropsychiatric COVID-19 manifestations. In addition, the review highlights the importance of monitoring biomarkers to assess Central Nervous System (CNS) involvement. Management strategies for these neuropsychiatric conditions include supportive therapy, antiepileptic drugs, antithrombotic therapy, and psychotropic drugs, emphasizing the need for a multidisciplinary approach. Understanding the long-term neuropsychiatric implications of COVID-19 is essential for developing effective treatment protocols and improving patient outcomes.