Alexandra Orășeanu

Dr. Alexandra Orășeanu

orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

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

Representative Publications

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5 December 2023 in Diagnostics
Verified
Journal Article
Open access
PDF file
AOAlexandra Orășeanu
Alexandra Orășeanu
MBMihaela Cristina Brisc
Mihaela Cristina Brisc
OMOctavian Maghiar
Octavian Maghiar
HPHoria Popa
Horia Popa
CBCiprian Mihai Brisc
Ciprian Mihai Brisc
CBCiprian Brisc
Ciprian Brisc
From a global perspective, gastric cancer (GC) persists as a significant healthcare issue. In the Western world, the majority of cases are discovered at late stages, when the treatment is generally unsuccessful. There are no organized screening programs outside of Asia (Japan and Republic of Korea). Traditional diagnosis techniques (such as upper endoscopy), conventional tumor markers (CEA, CA19-9, and CA72-4), radiographic imaging, and CT scanning all have drawbacks. The gold standard for the earliest detection of cancer and related premalignant lesions is still endoscopy with a proper biopsy follow-up. Since there are currently no clinically approved biomarkers for the early diagnosis of GC, the identification of non-invasive biomarkers is expected to help improve the prognosis and survival rate of these patients. The search for new screening biomarkers is currently underway. These include genetic biomarkers, such as circulating tumor cells, microRNAs, and exosomes, as well as metabolic biomarkers obtained from biofluids. Meanwhile, cutting-edge high-resolution endoscopic technologies are demonstrating promising outcomes in the visual diagnosis of mucosal lesions with the aid of linked color imaging and machine learning models. Following the PRISMA guidelines, this study examined the articles in databases such as PubMed, resulting in 167 included articles. This review discusses the currently available and emerging methods for diagnosing GC early on, as well as new developments in the endoscopic detection of early lesions of the stomach.

24 April 2024 in Medicina
Verified
Journal Article
Open access
PDF file
SSSabina Solea
Sabina Solea
MBMihaela Cristina Brisc
Mihaela Cristina Brisc
AOAlexandra Orășeanu
Alexandra Orășeanu
FVFlorian Ciprian Venter
Florian Ciprian Venter
CBCiprian Mihai Brisc
Ciprian Mihai Brisc
CBCiprian Brisc
Ciprian Brisc
Background and Objectives: The pancreas, ensconced within the abdominal cavity, requires a plethora of sophisticated imaging modalities for its comprehensive evaluation, with ultrasonography serving as a primary investigative technique. A myriad of pancreatic pathologies, encompassing pancreatic neoplasia and a spectrum of inflammatory diseases, are detectable through these imaging strategies. Nevertheless, the intricate anatomical confluence and the pancreas’s deep-seated topography render the visualization and accurate diagnosis of its pathologies a formidable endeavor. The objective of our paper is to review the best diagnostic imagistic tools for the pancreas. Materials and Methods: we have gathered several articles using Prisma guidelines to determine the best imagistic methods. The imperative of pancreatic scanning transcends its diagnostic utility, proving to be a pivotal element in a multitude of clinical specialties, notably surgical oncology. Within this domain, multidetector computed tomography (MDCT) of the pancreas holds the distinction of being the paramount imaging modality, endorsed for its unrivaled capacity to delineate the staging and progression of pancreatic carcinoma. In synergy with MDCT, there has been a notable advent of avant-garde imaging techniques in recent years. These advanced methodologies, including ultrasonography, endoscopic ultrasonography, contrast-enhanced ultrasonography, and magnetic resonance imaging (MRI) conjoined with magnetic resonance cholangiopancreatography (MRCP), have broadened the horizon of tumor characterization, offering unparalleled depth and precision in oncological assessment. Other emerging diagnostic techniques, such as elastography, also hold a lot of potential and promise for the future of pancreatic imaging. Fine needle aspiration (FNA) is a quick, minimally invasive procedure to evaluate lumps using a thin needle to extract tissue for analysis. It is less invasive than surgical biopsies and usually performed as an outpatient with quick recovery. Its accuracy depends on sample quality, and the risks include minimal bleeding or discomfort. Results, guiding further treatment, are typically available within a week. Elastography is a non-invasive medical imaging technique that maps the elastic properties and stiffness of soft tissue. This method, often used in conjunction with ultrasound or MRI, helps differentiate between hard and soft areas in tissue, providing valuable diagnostic information. It is particularly useful for assessing liver fibrosis, thyroid nodules, breast lumps, and musculoskeletal conditions. The technique is painless and involves applying gentle pressure to the area being examined. The resulting images show tissue stiffness, indicating potential abnormalities. Elastography is advantageous for its ability to detect diseases in early stages and monitor treatment effectiveness. The procedure is quick, safe, and requires no special preparation, with results typically available immediately. Results: The assembled and gathered data shows the efficacy of various techniques in discerning the nature and extent of neoplastic lesions within the pancreas. Conclusions: The most common imaging modalities currently used in diagnosing pancreatic neoplasms are multidetector computed tomography (MDCT), endoscopic ultrasound (EUS), and magnetic resonance imaging (MRI), alongside new technologies, such as elastography.

9 October 2026 in Life
Verified
Journal Article
Open access
PDF file
AOAlexandra Orășeanu
Alexandra Orășeanu
JSJacobus (Koos) Frederick Van Staden
Jacobus (Koos) Frederick Van Staden
RGRamona Georgescu-State
Ramona Georgescu-State
ISIonela Stancu
Ionela Stancu
NCNegut Catalina
Negut Catalina
ABAlexandru Bratei
Alexandru Bratei
Background: Although amino acids have been correlated with gastric cancer progression, most previous investigations have focused on a single biological matrix and have not differentiated between the two enantiomeric forms. Methods: In this study, we investigated the associations between the stereoisomeric profiles of 12 amino acids in whole blood, urine, and saliva and the clinicopathological features of gastric cancer. Samples from 33 patients were analyzed using a stochastic sensing platform, and the data were processed with Excel and MATLAB R1. Results: Distinct amino acid patterns were associated with tumor location, size, thickness, local extension, and pathological T stage. Specific stereoisomeric profiles were associated with tumors extending to the pylorus, duodenum, and esophagus, as well as with disease stage. Conclusions: These findings suggest that a combined analysis of L- and D-amino acid stereoisomers across multiple biological fluids may yield useful minimally invasive molecular profiles for monitoring gastric cancer progression and invasion.

1 January 2025 in Internal Medicine
Verified
Journal Article
Open access
PDF file
SSSabina Solea
Sabina Solea
EAEl-kharoubi Amina
El-kharoubi Amina
LAVINIA DAVIDESCULAVINIA DAVIDESCU
LAVINIA DAVIDESCU
MBMihaela Cristina Brisc
Mihaela Cristina Brisc
CBCiprian Mihai Brisc
Ciprian Mihai Brisc
BCBrisc Ciprian
Brisc Ciprian
Tirzepatide is a new GLP-1 and GIP receptor agonist. We have seen good results in managing type 2 diabetes and obesity using Tirzepatide by improving glycemic control and promoting significant weight loss. The effects on the pancreas include enhanced glucose-dependent insulin secretion, reduced glucagon production, and potential protective actions on beta-cell function and survival among other. Rare cases of acute pancreatitis, such as severe necrotizing pancreatitis, have been reported however. Thus, we need close monitoring of patients for abdominal pain, nausea, or vomiting. While tirzepatide has benefits for metabolic health, its use requires careful supervision to lower the potential pancreatic risks. This highlights the importance of balancing its therapeutic advantages with vigilant monitoring for adverse effects.