Alexandru Alexandru

Dr. Alexandru Alexandru

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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Journal Article
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ECElena Ciurariu
Elena Ciurariu
Tirziu Andreea TalidaTirziu Andreea Talida
Tirziu Andreea Talida
Norberth Istvan VargaNorberth Istvan Varga
Norberth Istvan Varga
HBHirtie Bogdan
Hirtie Bogdan
AAAlexandru Alexandru
Alexandru Alexandru
LNLaura Corina Nicolescu Laura Corina Nicolescu
Laura Corina Nicolescu Laura Corina Nicolescu
The interplay between gut microbiota and retinal health, known as the gut-–retina axis, has gained increasing attention in recent years. Short-chain fatty acids (SCFAs), metabolites produced by gut microbiota, have been identified as key mediators of gut–retina communication. This systematic review explores the role of SCFAs in retinal health and their potential impact on the development and progression of retinal diseases, such as diabetic retinopathy (DR), age-related macular degeneration (AMD), and glaucoma. A literature search was conducted across multiple databases, including PubMed, Google Scholar, and Science Direct, to identify studies published between 2014 and December 2024. Studies were included if they investigated the effects of SCFAs on retinal structure, function, or disease pathogenesis in animal models or human subjects. The review included 10 original articles spanning both preclinical and clinical studies. Evidence suggests that SCFAs play a crucial role in maintaining retinal homeostasis through anti-inflammatory and neuroprotective mechanisms. Dysbiosis of the gut microbiota, leading to altered SCFA production, was associated with increased retinal inflammation, oxidative stress, and vascular dysfunction. Furthermore, reduced SCFA levels were linked to the progression of retinal diseases, such as diabetic retinopathy and age-related macular degeneration. Modulation of gut microbiota and SCFA levels through dietary interventions or probiotics may represent a novel therapeutic strategy for preventing or managing retinal diseases. Further research is needed to elucidate the precise molecular mechanisms underlying SCFA-mediated retinal protection and to evaluate the efficacy of targeted therapies in clinical settings.

17 December 2024 in Cancers
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AAAlexandru Alexandru
Alexandru Alexandru
SISmaranda Cristiana Ivan
Smaranda Cristiana Ivan
STSonia Tanasescu
Sonia Tanasescu
LOLicinia Andrada Oprisoni
Licinia Andrada Oprisoni
TDTiberiu Liviu Dragomir
Tiberiu Liviu Dragomir
EBEstera Boeriu
Estera Boeriu
Background: Vitamin D deficiency is increasingly recognized as a global health concern, with potential implications for cancer development and progression. This systematic review investigated the prevalence of vitamin D deficiency in pediatric cancer patients and its potential impact on clinical outcomes. Methods: A comprehensive literature search was conducted across multiple databases, including PubMed, Web of Science, and Cochrane Library, to identify the relevant studies published between 2009 and July 2024. Studies were included if they assessed vitamin D status in pediatric cancer patients and reported on the clinical outcomes. Data extraction and quality assessment were performed independently by two reviewers. Results: The review included 20 original articles encompassing a diverse pediatric population with various cancer types. A high prevalence of vitamin D deficiency was observed across the studies. Deficiency was associated with older age and lower socioeconomic status. Several studies reported associations between vitamin D deficiency and the increased risk of infection, poorer treatment response, and decreased survival. Conclusions: Vitamin D deficiency is highly prevalent in pediatric cancer patients and may negatively impact clinical outcomes. Routine screening for vitamin D deficiency and personalized supplementation strategies should be considered in this population. Further research is needed to establish optimal vitamin D management protocols and evaluate the long-term benefits of vitamin D repletion in pediatric oncology.

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LBLigia Balulescu
Ligia Balulescu
SBSimona Brasoveanu
Simona Brasoveanu
MPMarilena Pirtea
Marilena Pirtea
DGDorin Grigoras
Dorin Grigoras
Cristina Anamaria SecosanCristina Anamaria Secosan
Cristina Anamaria Secosan
LPLaurenţiu Cornel Pirtea
Laurenţiu Cornel Pirtea
Study objective: The objective of this systematic review is to investigate the impact of laparoscopic myomectomy techniques on pregnancy outcomes, with a specific focus on the correlation between the type of suture used during the procedure and the incidence of uterine rupture. Additionally, the study aims to examine how the localization and size of myomas, key factors in laparoscopic myomectomy, may influence fertility outcomes. Data Sources: extensive searches were conducted using MDPI, PubMed, Web of Science, and Cochrane Library databases from 2008 to November 2023. Methods of Study Selection: The study involved women of reproductive age diagnosed with fibroids who underwent surgical removal of fibroids using either laparotomy or laparoscopy. The evaluation of pregnancy outcomes focused on indicators such as live birth rates, miscarriage rates, stillbirth rates, premature delivery rates, and cases of uterine rupture. Quality assessment was systematically performed by employing the National Institutes of Health Study Quality Assessment Tools, with the subsequent formulation of clinical recommendations that were meticulously graded in accordance with the robustness of the underlying evidence. Results: The pregnancy outcomes post-myoma treatment, as reflected in one of the presented tables, show a promising number of pregnancies and live births, but also indicate the potential risks of miscarriages and preterm births. The diversity in outcomes observed among various studies underscores the imperative for tailored patient care, as well as the necessity for additional research aimed at optimizing fertility and pregnancy outcomes following myoma treatment. Conclusion: This study offers insights into the criteria for patient selection and intraoperative methodologies specifically related to laparoscopic myomectomy. To enhance our understanding of the associations between fibroid characteristics (location, size) and reproductive outcomes, additional research is warranted, particularly through well-designed clinical trials.

21 March 2025 in Nutrients
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CMCristian Ion Mot
Cristian Ion Mot
DHDelia Ioana Horhat
Delia Ioana Horhat
Nicolae Constantin BalicaNicolae Constantin Balica
Nicolae Constantin Balica
HBHirtie Bogdan
Hirtie Bogdan
Norberth Istvan VargaNorberth Istvan Varga
Norberth Istvan Varga
RGRadu Galis
Radu Galis
Background/Objectives: Vitamin D is classically associated with calcium and phosphate homeostasis, but recent research has expanded its role to include several new roles such as immune regulation, inflammation, and potential anti-cancer properties. The vitamin D receptor (VDR) is expressed in over 400 tissues, including those of the head and neck, implying a potential link between vitamin D and head and neck cancers (HNCs). Given the need for newer and better therapeutic approaches, this systematic review aims to synthesize existing clinical evidence on the relationship between vitamin D status and clinical outcomes in HNC patients. Methods and Results: A comprehensive literature search, across multiple databases including PubMed, Google Scholar and Science Direct, identified 187,642 studies related to vitamin D and cancer, from which 16 studies met the inclusion criteria. The inclusion criteria were English-language, full-text original research (2015–2025) on vitamin D’s role in HNC progression and treatment, focusing on human studies. The findings indicate that vitamin D deficiency is highly prevalent among HNC patients, with rates ranging from 47% to 95%, particularly in advanced-stage cancers and those undergoing intensive treatment. Inverse association between vitamin D levels and HNC risk was reported, with higher serum 25(OH)D levels linked to a 30–32% reduction in cancer risk. Additionally, higher vitamin D levels correlated with improved survival rates and reduced recurrence, though some findings lacked statistical significance. Deficiencies were associated with higher rates of malnutrition and postoperative complications, reinforcing vitamin D’s role in nutritional stability and surgical recovery. Conclusions: This systematic review highlights how common and significant vitamin D deficiency is among head and neck cancer (HNC) patients, exploring its possible role in cancer risk, prognosis, survival, treatment-related side effects, malnutrition, and post-surgical complications. The evidence suggests that while higher vitamin D levels are linked to better survival and fewer treatment-related issues, the benefits seem to level off beyond a certain point, indicating a more complex relationship. Additionally, vitamin D supplementation appears to help reduce chemoradiation side effects like mucositis, skin toxicity, dysphagia, and pain, ultimately improving patients’ quality of life during treatment.

23 September 2023 in Life
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Journal Article
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SBSimona Brasoveanu
Simona Brasoveanu
RIRazvan Ilina
Razvan Ilina
LBLigia Balulescu
Ligia Balulescu
MPMarilena Pirtea
Marilena Pirtea
Cristina Anamaria SecosanCristina Anamaria Secosan
Cristina Anamaria Secosan
Laurentiu PirteaLaurentiu Pirtea
Laurentiu Pirtea
Objectives: To compare the follow-up results of a sacrospinous ligament fixation (SSLF) technique for laparoscopic bilateral fixation of the vagina to the iliopectineal ligament via a PVDF-mesh (laparoscopic pectopexy technique, LP) in terms of cure rate and postoperative complications rate. Material and methods: This prospective study included 160 patients diagnosed with pelvic organ prolapse stage II–IV according to the POP-Q system. Eighty-two patients (51.25%) underwent vaginal sacrospinous ligament fixation and seventy-eight patients (48.75%) underwent the laparoscopic pectopexy procedure. Results: The cure rate was high in both groups, 95.12% of the patients (78 out of 82) in the SSLF group and 93.59% of the patients (73 out of 78) in the LP group were cured post surgery, leading to an overall cure rate of 151 out of 160 patients. Pelvic pain was present in 5.00% of all patients, but was notably more frequent in the SSLF group (7, 8.54%) than in the LP group (1, 1.28%). Dyspareunia occurred in 4.37% of all patients, slightly more frequently in the SSLF group (6, 7.32%) than the LP group (1, 1.28%), but without significant difference. Conclusions: The laparoscopic pectopexy procedure has comparably positive follow-up results with the conventional sacrospinous ligament fixation procedure. Both SSLF and LP are effective in the treatment of pelvic organ prolapse, with favorable anatomical and subjective results, a high cure rate and low rates of serious postoperative complications.

10 November 2023 in Medicina
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Journal Article
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LBLigia Balulescu
Ligia Balulescu
SBSimona Brasoveanu
Simona Brasoveanu
MPMarilena Pirtea
Marilena Pirtea
OBOana Balint
Oana Balint
AIAurora Ilian
Aurora Ilian
LPLaurenţiu Cornel Pirtea
Laurenţiu Cornel Pirtea
Background and Objectives: The objective of this study was to assess the effectiveness of using a peri-cervical tourniquet in reducing blood loss during a laparoscopic myomectomy. Materials and Methods: This prospective study evaluated the impact of performing a concomitant tourniquet placement during a laparoscopic myomectomy (LM). A total of 60 patients were randomly allocated to one of two groups: 30 patients who underwent an LM with a tourniquet placement (the TLM group) and 30 patients who benefited from a standard LM (the SLM group). This study’s main objective was to evaluate the impact of tourniquet use on perioperative blood loss, which is quantified as the difference in the pre- and postoperative hemoglobin levels (Delta Hb) and the postoperative blood transfusion rate. Results: The mean Delta Hb was statistically lower in the TLM group compared to the SLM group: 1.38 g/dL vs. 2.41 g/dL (p < 0.001). The rate of postoperative iron perfusion in the TLM group was significantly lower compared to the SLM group (4 vs. 13 patients; p = 0.02). All four patients that required a blood transfusion were from the SLM group. On average, the peri-cervical tourniquet fastening time was 10.62 min (between 7 and 15 min), with no significant impact on the overall operative time: 98.50 min for the TLM group compared to 94.66 min for the SLM group. Conclusions: Fastening a tourniquet during a laparoscopic myomectomy is a valuable technique to effectively control intraoperative bleeding and enhance surgical outcomes.