Nicoleta Leopa

Dr. Nicoleta Leopa


Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

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

Representative Publications

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31 March 2023 in Journal of Gastrointestinal and Liver Diseases
Verified
Journal Article
Open access
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CTCristina Tocia
Cristina Tocia
ADAndrei Dumitru
Andrei Dumitru
BMBogdan Bogdan Mateescu
Bogdan Bogdan Mateescu
LNLucian Negreanu
Lucian Negreanu
MSMonica State
Monica State
LALuana Alexandrescu
Luana Alexandrescu
Background and Aims: MicroRNAs (miR) have altered expression in multiple autoimmune disorders including inflammatory bowel disease. The aim of the study was to assess the tissue and circulating miR-31, miR-200b, and miR-200c expression levels as potential biomarkers for intestinal disease activity in patients with Crohn’s disease (CD). Methods: The study included 45 patients with histopathological confirmed CD and active disease (defined as fecal calprotectin >50 μg/g and Simple Endoscopic Score (SES) of CD >3), and 21 subjects as controls for the validation cohort. Demographic and clinical data, biomarkers (fecal calprotectin), endoscopy data, the expression levels of miR-31, miR-200b, and miR-200c in tissue and serum were assessed (by RT-PCR). Receiver operating characteristic analysis was performed to assess the miR-31, miR-200b, and miR-200c expression levels as potential biomarkers for active CD. Results: Mean fecal calprotectin was 1540±890 μg/g. Mean SES-CD was 8.9±4.2. Tissue and circulating miR- 31 were significantly correlated with fecal calprotectin (r=0.81, r=0.83, p<0.01) and with SES-CD (r=0.82, r=0.79, p<0.01). The expression level of miR-31 was significantly upregulated in CD tissue cases compared to the control tissue samples (6.24±1.57 vs. 3.70±1.44; p <0.01). Similarly, serum miR-31 expression levels in CD patients were significantly upregulated compared to the control serum samples (0.78±0.42 vs. -2.07±1.00; p<0.01). The expression levels of tissue miR-200b and miR-200c were significantly upregulated in CD tissue cases compared to the control tissue samples (-5.25±0.93 vs. -4.69±0.80, p=0.03 for miR-200b, and -0.86±0.96 vs. 0.39±0.66, p<0.01 for miR-200c). Similarly, serum miR-200b and miR-200c expression levels in CD patients were significantly upregulated compared to the control serum samples (p < 0.05). Receiver operating characteristic analysis revealed that the expression levels of the selected miRNAs could help to discriminate active CD patients from healthy controls with very good specificity and sensitivity. Conclusions: Tissue and circulating miR-31, miR-200b, and miR-200c reflect disease activity in CD patients and can be used as biomarkers for active disease.

2 August 2022 in Experimental and Therapeutic Medicine
Verified
Journal Article
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RPRăzvan Cătălin Popescu
Răzvan Cătălin Popescu
NLNicoleta Leopa
Nicoleta Leopa
EDEugen Dumitru
Eugen Dumitru
AMAnca Florentina Mitroi
Anca Florentina Mitroi
CTCristina Tocia
Cristina Tocia
FBFlorin Botea
Florin Botea
Diabetes mellitus (DM) promotes colorectal cancer (CRC) carcinogenesis through complex processes and is considered as an independent risk factor for cancer in general and for CRC in particular. Diabetic patients have complications in the postoperative period following CRC surgery. The aim of the present study was to explore the effect of type II DM (T2DM) on postoperative outcomes for CRC compared with non‑diabetic patients. The present study analyzed the data from patients admitted to the General Surgery Department, Emergency Hospital of Constanța (Romania) diagnosed with CRC and DM compared with a control group (patients with CRC, without DM, recruited in the same period and frequency matched to cases by number, sex and age) analyzing patient comorbidities and postoperative complications. A total of 61 patients had undergone surgery for CRC and met the inclusion criteria in the present study conducted during September 2020‑2021. A total of 30 patients associated T2DM. Diabetic patients have been associated with more comorbidities than non‑diabetics; the age‑adjusted Charlson comorbidity index score ≥6 was identified in 90% of diabetic patients compared with 45.2% of controls. Grade III Clavien‑Dindo classification was observed in 13.3% diabetic patients compared with 3.2% of non‑diabetic patients. Additionally, a higher rate of urinary and pulmonary complications (6.7 vs. 3.2% in controls respectively) in patients with diabetes was found. Postoperative hospitalization was prolonged in diabetic patients (P=0.042). Univariate and multivariate analyses revealed that the laparoscopic approach for diabetic patients was found to be associated with <grade III Clavien‑Dindo classification (P=0.040) and the absence of surgical site infection (P=0.040). Diabetes predisposes patients to numerous postoperative complications following CRC surgery and postoperative therapeutic conduct must be personalized to prevent possible postoperative complications following CRC.

26 April 2022 in Medicina
Verified
Journal Article
Open access
PDF file
RPRazvan Popescu
Razvan Popescu
FBFlorin Botea
Florin Botea
EDEugen Dumitru
Eugen Dumitru
LMLaura Mazilu
Laura Mazilu
LMLuminita Gentiana Micu
Luminita Gentiana Micu
NLNicoleta Leopa
Nicoleta Leopa
Background and Objectives: Complete mesocolon excision and high vascular ligation have become a standard procedure in the treatment of colon cancer. The transverse colon has certain embryological and anatomical particularities which require special attention in case of oncological surgeries. Proximal transverse colon cancer (TCC) can metastasize to the lymph nodes in the gastrocolic ligament. The aim of this study is to assess the tumor involvement of these lymph nodes and to determine the applicability of gastrocolic ligament lymph nodes dissection as the standard approach for proximal transverse colon cancer. Materials and Methods: this study analyzes the cases of patients admitted to the Surgery Department, diagnosed with proximal transverse colon cancer, with tumor invasion ≥ T2 and for which complete mesocolon excision with high vascular ligation and lymphadenectomy of the gastrocolic ligament (No. 204, 206, 214v) were performed. Results: A total of 43 cases operated during 2015–2020 were included in the study. The median total number of retrieved central lymph nodes was 23 (range, 12–38), that had tumor involvement in 22 cases (51.2%). Gastrocolic ligament tumor involvement was found in 5 cases (11.6%). The median operation time was 180 min, while the median blood loss was 115 mL (range 0–210). The median time of hospitalization was 6 days (range, 5–11). Grade IIIA in the Clavien-Dindo classification was noticed in 3 patients, with no mortality. Upon Kaplan–Meier analysis, tumors > T3 (p < 0.016) and lymph node ratio < 0.05 (p < 0.025) were statistically significant. Conclusions: lymph node dissection of the gastrocolic ligament in patients with advanced proximal transverse colon cancer may improve the oncological outcome in T3/T4 tumors, and therefore standardization could be feasible

1 February 2023 in Journal of Adolescent and Young Adult Oncology
Verified
Journal Article
Closed access
NLNicoleta Leopa
Nicoleta Leopa
EDEugen Dumitru
Eugen Dumitru
ADAndrei Dumitru
Andrei Dumitru
CTCristina Tocia
Cristina Tocia
MPMarius Dragos Prazaru
Marius Dragos Prazaru
RPRazvan Catalin Popescu
Razvan Catalin Popescu
Purpose: Colon cancer is the third-most common and fatal cancer, with a mean age of onset >65 years. In recent years, there has been an increase in the number of cases of colon cancer in young (CCY) patients. This study investigates the biological behavior and epidemiological features of CCY and older adults in our area. Methods: Eighty-one patients (19 young adults <40 years old and 62 older adults ≥40 years old) were admitted to the General Surgery Clinic of the Constanta Emergency Hospital for colon cancer between January and December 2018. The biological behavior and epidemiological characteristics of the two groups were compared. Results: The group of young patients was characterized by finding the diagnosis on an average of 6–9 months after the onset of the first symptom, in a more advanced stage of the disease (73.69%); the onset of symptoms being nonspecific (diarrhea 26.32%, weight loss 21.05%, constipation 21.05%, and bloating 21.05%) and initially treated in a benign context, without the recommendation of additional specific explorations. The time between the onset of symptoms and the diagnosis established in the category of patients ≥40 years of age was on an average of 3–6 months, with most patients being diagnosed in the early stages of the disease (62.9%). Conclusions: Improving health education through colon cancer information programs should be implemented with information on alert symptoms and indications on the steps that a symptomatic patient should follow and no longer ignore his or her symptoms, because health is not necessarily the prerogative of youth.

1 January 2025 in Chirurgia
Verified
Journal Article
Open access
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C(Cristina Anita Ionescu (Mitu)
Cristina Anita Ionescu (Mitu)
GCGeorgeta Camelia Cozaru
Georgeta Camelia Cozaru
MAMariana Aschie
Mariana Aschie
NLNicoleta Leopa
Nicoleta Leopa
BCBogdan Cimpineanu
Bogdan Cimpineanu
MPMihaela Pundiche
Mihaela Pundiche
Background: Advanced prostate cancer is a biologically heterogeneous disease often marked by multiple genetic and epigenetic alterations that influence tumor progression, treatment resistance, and prognosis. Among the most frequently altered genes are PTEN, AR-V7, TP53, TMPRSS2-ERG, and ERBB2, each with potential relevance for stratifying risk and guiding targeted therapy. Methods: This retrospective study included 43 patients with advanced prostate cancer who underwent radical prostatectomy. Tumor specimens were analyzed using fluorescence in situ hybridization (FISH) to assess the mutational status of the five markers. Clinicopathological parameters, including PSA levels, Gleason score, tumor stage, and invasion status, were correlated with molecular alterations using multinomial logistic regression. Results: The most common isolated alteration was PTEN loss (20.9%), followed by TP53 amplification (16.3%), TMPRSS2-ERG fusion (13.9%), AR-V7 expression (11.6%), and ERBB2 amplification (7%). Combined alterations were also observed, with dual or triple marker expression in select aggressive cases. PTEN- and AR-V7+ were associated with low PSA values despite aggressive pathology, while ERBB2+ correlated with high PSA levels and high Gleason scores. TP53+ and ERBB2+ were also significantly associated with high-grade tumors (Gleason 7). AR-V7+ was the only marker significantly associated with seminal vesicle invasion. Younger age was weakly correlated with AR-V7+ and TP53+ status. Conclusions: The molecular profile defined by PTEN, AR-V7, TP53, and ERBB2 identifies distinct biological subtypes in advanced prostate cancer, each with specific prognostic and therapeutic implications. Integration of these biomarkers into routine clinical assessment may improve treatment personalization and risk stratification. Validation in larger, prospective cohorts is warranted.

27 September 2024 in Clinics and Practice
Verified
Journal Article
Open access
PDF file
IEIORDACHE IONUT EDUARD
IORDACHE IONUT EDUARD
LALuana Alexandrescu
Luana Alexandrescu
ANAlina Doina Nicoară
Alina Doina Nicoară
RPRazvan Popescu
Razvan Popescu
NLNicoleta Leopa
Nicoleta Leopa
LSLiliana Steriu
Liliana Steriu
Background and Objectives: Intestinal endometriosis is an exceptionally rare cause of intestinal obstruction. This case report and literature review aim to highlight the clinical presentation, diagnostic challenges, and surgical management of this condition. Materials and methods: We report the case of a 50-year-old female patient who presented diffuse abdominal pain, nausea, vomiting, a distended abdomen, and an absence of intestinal transit for gas and faeces. Initial symptoms included flatulence and constipation, which gradually worsened for two months prior to the patient’s hospital admission, leading to acute intestinal obstruction. Diagnostic investigations, including blood tests, ultrasound (USG), X-ray, and a contrast-enhanced computer tomography (CT) scan, revealed significant small bowel dilatation and an ileal volvulus. The patient underwent urgent hydro-electrolytic and metabolic rebalancing followed by a median laparotomy surgical procedure. Intraoperative findings included a distended small intestine and an obstructive ileal volvulus, and required an 8 cm segmental enterectomy and terminal ileostomy. Results: Postoperative recovery was slow but favourable, with a gradual digestive tolerance. Histopathological examination of the resected ileum revealed intestinal endometriosis characterized by a fibro-conjunctive reaction and nonspecific chronic active inflammation. Five months later, the patient underwent a successful reversal of the ileostomy with a mechanical lateral anastomosis of the cecum and ileum, resulting in a favourable postoperative course. Conclusions: This case underscores the importance of considering intestinal endometriosis in women presenting with unexplained gastrointestinal symptoms and highlights the need for timely surgical intervention and careful postoperative management. Further research is required to better understand the pathophysiology and optimal treatment strategies for intestinal endometriosis.