Alexandra Eleftheria Menni

Dr. Alexandra Eleftheria Menni

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Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

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

Representative Publications

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Journal Article
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GTGeorgios Tzikos
Georgios Tzikos
IAIoannis Alexiou
Ioannis Alexiou
STSokratis Tsagkaropoulos
Sokratis Tsagkaropoulos
AMAlexandra Eleftheria Menni
Alexandra Eleftheria Menni
GCGeorgios Chatziantoniou
Georgios Chatziantoniou
Katerina KotzampassiKaterina Kotzampassi
Katerina Kotzampassi
Background: Neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) are widely accepted indices positively correlated with disease severity, progression, and mortality. In this study, we tested whether NLR and PLR could predict mortality and length of hospital stay (LOS) after cardiac surgery. Methods: NLR and PLR were calculated on days 0, 3, 5, and 7 postoperatively. A ROC curve was generated to assess their prognostic value; multivariate logistic analysis identified independent risk factors for 90-day mortality. Results: Analysis was performed on 179 patients’ data, 11 of whom (6.15%) died within 90 days. The discriminatory performance for predicting 90-day mortality was better for NLR7 (AUC = 0.925, 95% CI:0.865–0.984) with the optimal cut-off point being 7.10. NLR5 and PLR3 also exhibited a significant strong discriminative performance. Similarly, a significant discriminative performance was prominent for PLR3, NLR5, and NLR7 with respect to LOS. Moreover, NLR7 (OR: 2.143, 95% CI: 1.076–4.267, p = 0.030) and ICU LOS (OR:1.361, 95% CI: 1.045–1.774, p = 0.022) were significant independent risk factors for 90-day mortality. Conclusions: NLR and PLR are efficient predictive factors for 90-day mortality and LOS in cardiac surgery patients. Owing to the simplicity of determining NLR and PLR, their postoperative monitoring may offer a reliable predictor of patients’ outcomes in terms of LOS and mortality.

2 August 2024 in Nutrients
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Journal Article
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ITIoannis M. Theodorou
Ioannis M. Theodorou
DKDorothea Kapoukranidou
Dorothea Kapoukranidou
MTMARKOS IOANNIS THEODOROU
MARKOS IOANNIS THEODOROU
ITIoulia Tseti
Ioulia Tseti
AMAlexandra Eleftheria Menni
Alexandra Eleftheria Menni
Katerina KotzampassiKaterina Kotzampassi
Katerina Kotzampassi
The skin serves as a critical barrier against external threats—dehydration, ultraviolet exposure, and infections—playing a significant role in internal homeostasis and moisture retention. Additionally, and equally importantly, it interacts dynamically with the complex microbiome resident in it, which is essential for maintaining skin health. Recent interest has focused on the use of probiotics and postbiotics, besides their ability to modulate the skin microbiome, to enhance barrier function, and exhibit anti-inflammatory properties, to be involved in skincare, by having the potential to improve skin hydration, elasticity, and overall appearance, as well as in reducing signs of aging, such as wrinkles and fine lines. The products—being a combination of a cosmetic regime plus probiotic[s] or postbiotic[s]—are named cosmeceuticals. However, to comply with the regulations for the characterization of a microorganism as a specific probiotic strain, the pro- or postbiotics incorporated into the cosmetic regime should be both genetically and phenotypically defined. Thus, in this review, we present 14 published clinical trials using such cosmetic products with specific, well-characterized strains of probiotics or postbiotics applied to volunteers with healthy skin. Looking at the results of these studies collectively, we can say that these genetically and phenotypically defined strains of either live or inanimate bacteria and/or their components seem to keep the treated skin at least fully hydrated, with intact epithelial tone, increased radiance, and with decreased wrinkle depth, while normalizing the commensal skin microbiota. Future advancements in personalized skin care may lead to genomic sequencing and metabolomics to tailor probiotic and postbiotic treatments to individual skin microbiomes, promising a new frontier in cosmeceuticals.

6 July 2023 in Nutrients
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Journal Article
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AMAlexandra Eleftheria Menni
Alexandra Eleftheria Menni
MMMoysis Moysidis
Moysis Moysidis
GTGeorgios Tzikos
Georgios Tzikos
GSGeorge Stavrou
George Stavrou
ITIoulia Tseti
Ioulia Tseti
Katerina KotzampassiKaterina Kotzampassi
Katerina Kotzampassi
Wound healing is a multi-factorial response to tissue injury, aiming to restore tissue continuity. Numerous recent experimental and clinical studies clearly indicate that probiotics are applied topically to promote the wound-healing process. However, the precise mechanism by which they contribute to healing is not yet clear. Each strain appears to exert a distinctive, even multi-factorial action on different phases of the healing process. Given that a multi-probiotic formula exerts better results than a single strain, the pharmaceutical industry has embarked on a race for the production of a formulation containing a combination of probiotics capable of playing a role in all the phases of the healing process. Hence, the object of this review is to describe what is known to date of the distinctive mechanisms of each of the most studied probiotic strains in order to further facilitate research toward the development of combinations of strains and doses, covering the whole spectrum of healing. Eleven probiotic species have been analyzed, the only criterion of inclusion being a minimum of two published research articles.

28 February 2025 in Nutrients
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GTGeorgios Tzikos
Georgios Tzikos
ECEleni Chamalidou
Eleni Chamalidou
DCDimitra Christopoulou
Dimitra Christopoulou
AAAikaterini Apostolopoulou
Aikaterini Apostolopoulou
SGSofia Gkarmiri
Sofia Gkarmiri
Katerina KotzampassiKaterina Kotzampassi
Katerina Kotzampassi
Background: Psychological disorders are prevalent in patients having undergone gastrointestinal cancer surgery, and their emotional status may further deteriorate during subsequent chemotherapy. Psychobiotics are specific probiotics that have the unique characteristics of producing neuroactive substances that are thought to act on the brain–gut axis. The aim of the present study was to evaluate the benefits of a psychobiotic formula on depression and anxiety status, as well as on perceived stress, versus a placebo in patients on a chemotherapy course following gastrointestinal surgery for cancer. Patients: The enrolled patients, allocated to the psychobiotic and placebo groups, were assessed by means of these psychometric tests: Beck’s Depression Inventory and the Hamilton Depression Rating 17-item Scale for depression; the General Anxiety Disorder-7 for anxiety; and the Perceived Stress Scale-14 Item for perceived stress at three time-points: upon allocation [T1], after one month of treatment [T2], and two months thereafter [T3]. Results: In total, 266 patients were included. One month of psychobiotic treatment improved [i] depression status by 60.4% [48 depressed patients at T1, reduced to 16 at T3]; [ii] anxiety by 57.0% [72 patients at T1, 26 at T3]; and [iii] stress by 60.4% [42 at T1, 14 at T3]. The placebo-treated patients experienced a deterioration in all parameters studied, i.e., depression increased by 62.9%, anxiety by 39.7%, and stress by 142.5%. Conclusions: Based on these findings, it can be recognized that psychobiotic treatment has great potential for every patient at risk of suffering from depression, anxiety, or stress during the course of surgery/chemotherapy for gastrointestinal cancer.

1 May 2024 in Gland Surgery
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AVAngeliki Vouchara
Angeliki Vouchara
ACAngeliki Chorti
Angeliki Chorti
GTGeorgios Tzikos
Georgios Tzikos
AMAlexandra Eleftheria Menni
Alexandra Eleftheria Menni
SNStergianna Ntouma
Stergianna Ntouma
Theodosios S PapavramidisTheodosios S Papavramidis
Theodosios S Papavramidis
Background: Thyroid surgery in pediatric population is not as common as that in adults, although they share the same indications, techniques and complications. This review aims to evaluate the surgical management of thyroid disease in patients under 18 years old. Methods: We conducted a bibliographic search in the international literature. Data from the identified studies such as demographics, indication for surgery, type of procedure, complications and length of hospital stay were recorded. A retrospective review study of all patients under 18 years old who underwent thyroidectomy was performed. Results: We included 37 retrospective studies and a total of 12,728 patients. Thyroidectomy was more common in female patients and the mean age was approximately 14 years old. The leading indication for surgery was benign thyroid pathology. Due to the surgical treatments’ safety and effectiveness in young patients, total and subtotal thyroidectomy, whether for malignancies or benign diseases, is becoming more popular today. The most often occurring complication of pediatric thyroid surgery is hypoparathyroidism. Despite the high likelihood of recurrence of pediatric malignancies, overall survival rates of pediatric thyroid cancer are excellent. Conclusions: Thyroidectomy performed by high-volume thyroid surgeons in children and adolescents is considered an efficient and safe method of treatment of thyroid disease.

17 June 2025 in Nutrients
Verified
Journal Article
Open access
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AMAlexandra Eleftheria Menni
Alexandra Eleftheria Menni
HTHelen Theodosoy
Helen Theodosoy
GTGeorgios Tzikos
Georgios Tzikos
ITIoannis M. Theodorou
Ioannis M. Theodorou
ESEleni Vladimiros Semertzidou
Eleni Vladimiros Semertzidou
Katerina KotzampassiKaterina Kotzampassi
Katerina Kotzampassi
Background: Depression is a leading contributor to global disability, with a large proportion of patients showing inadequate responses to conventional antidepressants. Probiotic bacteria with psychotropic potential seem to be an emerging treatment option, either alone or in conjunction with depression symptom management. Objective: To critically review the Randomized Clinical Trials (RCTs) whose primary focus was to evaluate the efficacy of probiotics/psychobiotics to ameliorate depression status, quantified via validated psychometric tools. Methods: A comprehensive literature search of the PubMed and Scopus databases (January 2014–January 2025) was conducted to identify RCTs with the primary aim of improving depression status in adults taking probiotics in comparison to those taking a well-defined placebo. Results: Nineteen RCTs met the inclusion criteria, with all demonstrating a significant amelioration of depression status after probiotic/psychobiotic treatment, taken either as a stand-alone treatment [n = 5] or as an adjunctive treatment to antidepressant therapy [n = 10]. However, only in 14 studies was a significant improvement achieved at the end of treatment over a placebo, which also showed an improvement against the baseline. In total, 7 out of 10 studies with probiotics as an add-on therapy and 7 out of the 9 with probiotics, either as a monotherapy or with a different percentage also taking antidepressants, exhibited a significant amelioration of depression status against placebo treatment. Conclusions: Probiotics, particularly multi-strain preparations and certain well-characterized single strains, seem to be noticeably beneficial in alleviating depressive symptoms in adults. However, there is an urgent need for large-scale randomized clinical trials with well-defined specific psychobiotic strains in order to confirm the most effective strains.