Mihnea Costescu

Dr. Mihnea Costescu

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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22 July 2025 in Nutrients
Verified
Journal Article
Open access
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LCLaura Coman
Laura Coman
Daniel Vasile BalabanDaniel Vasile Balaban
Daniel Vasile Balaban
DFDumbravă Bogdan Florin
Dumbravă Bogdan Florin
Horia PaunescuHoria Paunescu
Horia Paunescu
RMRuxandra-Cristina Marin
Ruxandra-Cristina Marin
Oana Andreia ComanOana Andreia Coman
Oana Andreia Coman
Acute pancreatitis (AP) is among the most frequent gastroenterology emergencies, with hospital admission rates on the rise in recent decades. However, a specific treatment for this condition is still lacking. Mitochondrial damage induced by oxidative stress is regarded as the key event in the pathophysiology and initiation of cellular damage in AP. In the early stages of AP, the oxidant–antioxidant balance changes rapidly, and there are significant data regarding the reduced serum levels of antioxidants, with this event being correlated with the clinical severity of pancreatitis. Therefore, addressing oxidative stress could represent a potential therapeutic target in AP. In this comprehensive review, we aimed to provide an update on current evidence regarding clinical and experimental data on antioxidant use in AP, focusing on human studies investigating the effects of single and combined antioxidant supplementation. Although a multitude of animal studies demonstrated that antioxidant therapy has beneficial effects in experimental AP by reducing oxidative injury, inflammatory markers, and ameliorating histological outcomes, human trials showed predominantly conflicting results, with some studies suggesting benefit while others showed no effect, or even potential harm, when antioxidants were administered in high doses or in combination. Moreover, some antioxidants with beneficial results in experimental settings did not show the same efficacy when translated to human studies, which may be a consequence of either inappropriate dosage, route of administration and duration of therapy, or altered pharmacodynamics in vivo. In conclusion, oxidative stress plays a key role in the pathophysiology of AP by enhancing acinar cell injury, inflammation, and systemic complications. Future studies should be centered on optimized dosing strategies, early administration protocols, targeted patient selection, and delivery methods of proper pharmaceutical forms.

Verified
Journal Article
Open access
PDF file
CBCristiana Aurelia Barbu
Cristiana Aurelia Barbu
SSSmaranda Stoleru
Smaranda Stoleru
AZAurelian Zugravu
Aurelian Zugravu
EPElena Poenaru
Elena Poenaru
ADAdrian Florentin Florentin Dragomir
Adrian Florentin Florentin Dragomir
FIFulga Ion
Fulga Ion
The microbiota–gut–brain axis (MGBA) comprises a complex bidirectional communication network integrating neural, immune, metabolic, and endocrine pathways. Dopamine, traditionally viewed as a central neurotransmitter, also plays essential roles in the gastrointestinal (GI) tract, where it regulates motility, secretion, barrier homeostasis, and mucosal immunity. Growing evidence indicates that the gut microbiota significantly contributes to intestinal dopamine metabolism through specialized enzymatic pathways, particularly tyrosine decarboxylase in Enterococcus species and catechol dehydroxylase in Eggerthella species. These microbial reactions compete with host processes, alter dopaminergic tone, and degrade orally administered levodopa (L-DOPA), providing a mechanistic explanation for the variability in treatment response in Parkinson’s disease (PD). Beyond PD, microbially mediated alterations in dopaminergic signaling have been implicated in mood disorders, neurodevelopmental conditions, metabolic dysfunction, and immune-mediated diseases. This review synthesizes current mechanistic and translational evidence on the dopamine–microbiota interface, outlines microbial pathways shaping dopaminergic activity, and highlights therapeutic opportunities including microbiota modulation, dietary strategies, fecal microbiota transplantation, and targeted inhibitors of microbial dopamine metabolism. Understanding this interface offers a foundation for developing personalized approaches in neurogastroenterology and neuromodulatory therapies.

8 April 2026 in Biomedicines
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Journal Article
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GCGabriela Calin
Gabriela Calin
MCMihnea Costescu
Mihnea Costescu
M(Marcela Nour (Cârlig)
Marcela Nour (Cârlig)
CSCamer Salim
Camer Salim
NLNicu Ovidiu Lungu
Nicu Ovidiu Lungu
LDLetiția Doina Duceac
Letiția Doina Duceac
Fractures are becoming a bigger and bigger global health problem, with an estimated 178 million new cases each year and 455 million people living with disabilities caused by fractures. Donor site morbidity, the risk of immune rejection, and limited functional integration all make current grafting techniques less effective. Biomaterials that come from nature, like collagen, gelatin, chitosan, alginate, hyaluronic acid (HA), and silk fibroin, have become promising scaffolds because they are bioactive, mimic the extracellular matrix (ECM), and can be broken down by enzymes. Crosslinking and composite reinforcement can greatly change how well they work. For example, collagen scaffolds that are highly crosslinked with glutaraldehyde keep up to 51.9% of their tensile strength after being exposed to enzymes, while non-crosslinked scaffolds only keep 12% of their strength. Chitosan–hydroxyapatite matrices, on the other hand, can reach compressive strengths of 2–12 MPa, which is close to the strength of cancellous bone. Additive manufacturing and 4D printing allow for precise control of structures and the ability to change their shape over time, which helps with vascularization and mechanical adaptation. Injectable and in situ-forming hydrogels show clinically important results, such as filling 85% of osteochondral defects in rabbits, improving left ventricular ejection fraction by up to 9% in large-animal cardiac models, and speeding up healing by 25–40% in chronic wounds. Even with these improvements, it is still hard to get batch consistency, a standardized way to test mechanical properties, and production that meets GMP (Good Manufacturing Practices) standards and can be scaled up.

Verified
Journal Article
Open access
PDF file
AGAlexandra Grigore
Alexandra Grigore
Oana Andreia ComanOana Andreia Coman
Oana Andreia Coman
Horia PaunescuHoria Paunescu
Horia Paunescu
MCMihnea Costescu
Mihnea Costescu
FIFulga Ion
Fulga Ion
Wound healing involves physical, chemical and immunological processes. Transient receptor potential (TRP) and other ion channels are implicated in epidermal re-epithelization. Ion movement across ion channels can induce transmembrane potential that leads to transepithelial potential (TEP) changes. TEP is present in epidermis surrounding the lesion decreases and induces an endogenous direct current generating an epithelial electric field (EF) that could be implicated in wound re-epithelialization. TRP channels are involved in the activation of immune cells during mainly the inflammatory phase of wound healing. The aim of the study was to review the mechanisms of ion channel involvement in wound healing in in vivo experiments in murine (mice, rats) and how can this process be influenced. This review used the latest results published in scientific journals over the last year and this year to date (1 January 2023–31 December 3000) in order to include the in-press articles. Some types of TRP channels, such as TRPV1, TRPV3 and TRPA1, are expressed in immune cells and can be activated by inflammatory mediators. The most beneficial effects in wound healing are produced using agonists of TRPV1, TRPV4 and TRPA1 channels or by inhibiting with antagonists, antisense oligonucleotides or knocking down TRPV3 and TRPM8 channels.

15 November 2023 in Experimental and Therapeutic Medicine
Verified
Journal Article
Open access
PDF file
IDIuliana Diac
Iuliana Diac
LNLavinia Neculai-Cândea
Lavinia Neculai-Cândea
MHMihaela Horumbă
Mihaela Horumbă
CDCătălin Dogăroiu
Cătălin Dogăroiu
MCMihnea Costescu
Mihnea Costescu
AKArthur-Atilla Keresztesi
Arthur-Atilla Keresztesi
In recent years, the emergence of carbapenem‑resistant strains has been increasing worldwide, including in Romania. Rapid tests for post‑mortem examinations have been researched and currently have several applications. In the present study, we aimed to test the performance of O.K.N.V.I. RESIST‑5 tests on impure post‑mortem biological samples compared with a standard of pure cultures. When a death occurs during hospitalization and the issue of malpractice arises, the medico‑legal practice would benefit from rapid tests applicable to post‑mortem samples. Thus, detection and differentiation of the five targeted carbapenemases, namely oxacilinase‑48, Klebsiella pneumoniae carbapenemase, New Delhi metallo‑β‑lactamase, Verona integron‑encoded metallo‑β‑lactamase and imipenemase, could be useful in guiding sampling for third‑party microbiological assessment and could also be an asset from an epidemiological standpoint. The present prospective and observational pilot study included medico‑legal autopsy cases performed at Mina Minovici National Institute of Legal Medicine (Romania) between June and July 2022. A total of two sets of O.K.N.V.I. RESIST‑5 tests were performed: Test I, which was performed on‑site from biological samples obtained during autopsy; and Test II, which was performed on pure cultures after sample inoculation and incubation. Total of 39 O.K.N.V.I. RESIST‑5 rapid tests were performed on 19 biological samples, at least one sample per case. The O.K.N.V.I. RESIST‑5 tests performed on‑site showed an overall sensitivity of 92.3% with a 100% specificity. The results obtained through rapid tests using post‑mortem impure samples were comparable to the results obtained from sample cultures with good sensitivity and specificity. Through post‑mortem screening for carbapenem resistance, it would be possible to narrow down the number of cases that require further bacteriological assessment.

17 May 2024 in Preprints.org
Verified
Preprint
Open access
PDF file
AGAlexandra Grigore
Alexandra Grigore
Oana Andreia ComanOana Andreia Coman
Oana Andreia Coman
Horia PaunescuHoria Paunescu
Horia Paunescu
MCMihnea Costescu
Mihnea Costescu
FIFulga Ion
Fulga Ion
Wound healing involves physical, chemical and immunological processes. Transient receptor potential (TRP) and other ion channels are implicated in epidermal re-epithelization. Ion movement across ion channels can induce transmembrane potential that leads to transepithelial potential (TEP) changes. TEP present in epidermis surrounding the lesion decreases and induces an endogenous direct current generating an epithelial electric field (EF) that could be implicated in wound re-epithelialization. TRP channels are involved in the activation of immune cells during the inflammatory phase of wound healing. The aim of the study was to review the mechanisms of ion channel involvement in wound healing in in vivo experiments in rodents (mice, rats, rabbits) and how can this process be influenced. This review used the latest results published in scientific journals over the last year and this year to date (1 January 2023–31 December 3000) in order to include the in-press articles. Some types of TRP channels, such as TRPV1, TRPV3, and TRPA1, are expressed in immune cells and can be activated by inflammatory mediators. The most beneficial effects in wound healing are produced using agonists of TRPV1, TRPV4 and TRPA1 channels or by inhibiting with antagonists, antisense oligonucleotides or knocking down TRPV3 and TRPM8 channels.