Publications by authors named "Athina Samara"

Article Synopsis
  • A 43-year-old woman developed both UVF and VVF after a total hysterectomy and initially tried conservative treatment, which didn't work.
  • She then underwent a successful surgical procedure to correct the issues and has remained symptom-free for a year, highlighting the importance of recognizing and managing these rare fistula formations effectively.
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  • The study investigated how preoperative quality of life scores (EORTC QLQ-C30) relate to metrics like age and BMI in elderly patients undergoing colorectal cancer surgery.
  • It included 118 patients over 65 with resectable cancer, revealing negative correlations between QLQ scores and age, as well as differences in scores based on the type of cancer (rectal vs colon).
  • The findings suggest that lower preoperative QLQ scores are linked to longer recovery times and complications, indicating that these scores can predict postoperative outcomes in older patients.
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  • The study aimed to replicate inflammatory conditions of human gingiva by using human gingiva fibroblast cells cultured under specific serum starvation conditions with various concentrations of lipopolysaccharides and interleukin 1β.
  • Results showed that while P. gingivalis LPS did not increase inflammation markers, E. coli LPS and IL-1β did enhance the secretion of pro-inflammatory cytokines like IL-6 and TNFα, particularly when used together.
  • The combination treatment mimicked gene expression changes and cytokine profiles observed in chronic inflammation, suggesting it could serve as a useful model for studying gingival inflammation in vitro.
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The establishment of a postoperative pancreatic fistula (POPF) is considered the most common and, concomitantly, the most serious complication associated with pancreaticoduodenectomy (PD). The search for either technical modifications of the operative technique or pharmaceutical interventions that could possibly aid in decreasing the incidence of this often-devastating complication appears justified. The stenting of the pancreatic duct, with the use of either internal or external stents, has been evaluated in this direction.

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  • A rare case of night blindness, or nyctalopia, was diagnosed in a pregnant woman due to vitamin A deficiency resulting from a prior bariatric gastrectomy.
  • The diagnosis was confirmed through low serum vitamin A levels, and the patient was treated with oral vitamin A supplements, emphasizing the need for careful dosage to avoid teratogenic effects.
  • This case underscores the importance of monitoring vitamin levels in pregnant women with a history of bariatric surgery to prevent complications for both mother and baby.
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SARS-CoV-2 infection during pregestational and early pregnancy periods has an unclear impact on fetal development. Although vertical transmission is rare, potential effects on the developing fetal brain are plausible. However, robust evidence linking maternal SARS-CoV-2 infection to congenital anomalies is limited due to inadequate tracking of infection history and methodological flaws in published studies.

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Selective serotonin reuptake inhibitors (SSRIs), including citalopram, are widely used antidepressants during pregnancy. However, the effects of prenatal exposure to citalopram on neurodevelopment remain poorly understood. We aimed to investigate the impact of citalopram exposure on early neuronal differentiation of human embryonic stem cells using a multi-omics approach.

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  • * This decline in immune stimulation has increased susceptibility in populations, amplifying the usual cyclical peaks of the disease.
  • * Maternal immunization is effective in protecting infants under three months and highlights the importance of timely vaccination for both mothers and infants to prevent severe disease.
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The Astrocytic Calcium Signaling Toolkit (astroCaST) is a novel solution to a longstanding challenge in neuroscience research: the specialized analysis of astrocytic calcium events within fluorescence time-series imaging. Distinct from existing neuron-centric tools, astroCaST is adept at detecting and clustering astrocytic calcium events based on their unique spatiotemporal characteristics, thus filling a gap in astrocytic research methodologies. This toolkit not only facilitates the detection of such events but also extends its utility to provide comprehensive end-to-end analysis.

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The realization of the role of the microbiome of the female reproductive tract in health and disease has opened numerous possibilities for the scientific examination of the intertwining role between the human host and its microbiota. The imbalance in the composition of the microbial communities of the vagina and uterus is now recognized as a risk factor for many complications in pregnancy and according to the data from numerous studies, it is possible for this imbalance to play a crucial role in creating a hostile endometrial environment, and therefore, contributing to the etiology of recurrent implantation failure. Nevertheless, our current understanding of these complicated biological phenomena is far from complete, and in the future, there needs to be a systematic and thorough investigation of the diagnosis and therapy of this condition.

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  • - The study investigates the presence of O-linked N-acetylglucosamine (O-GlcNAcH) in endocervical tissues, highlighting its different expression levels in normal and diseased cells, particularly in polyps.
  • - Results show that O-GlcNAcH is weakly expressed in most mucosa but more commonly found in polyps, with specific cell types like non-mucin-secreting reserve cells displaying strong staining.
  • - The findings suggest that O-GlcNAcH levels can serve as a useful marker to distinguish between certain cell types in cervical tissues, indicating its potential role in assessing inflammation or pathology.
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Hepatopancreato and biliary (HPB) tumors represent some of the leading cancer-related causes of death worldwide, with the majority of patients undergoing surgery in the context of a multimodal treatment strategy. Consequently, the implementation of an accurate risk stratification tool is crucial to facilitate informed consent, along with clinical decision making, and to compare surgical outcomes among different healthcare providers for either service evaluation or clinical audit. Perioperative troponin levels have been proposed as a feasible and easy-to-use tool in order to evaluate the risk of postoperative myocardial injury and 30-day mortality.

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A number of countries including the UK are currently experiencing large outbreaks of measles affecting mainly young children but also adolescents and young adults. Women of childbearing age are a particular group of concern because the 1988 Wakefield Lancet paper, which falsely asserted a connection between the MMR vaccine and autism, was associated with a large and sharp decline in childhood MMR uptake over several years. This has left large cohorts of non-immune adolescents and young adults (born between 1998 and 2004), including young women who are now of childbearing age and remain susceptible to measles as well as rubella.

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We present the case of a 35-year-old pregnant woman who visited our department for a routine ultrasonography screening scan for fetus anatomy during the 22nd week of gestation. Our report revealed a male fetus with marked hydrocephalus and severe intrauterine growth retardation. After extensive counseling, the couple decided to proceed with an invasive diagnosis via amniocentesis.

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 Central pancreatectomy (CP) represents an organ-preserving type of pancreatic resection. The procedure has been associated with improved long-term functional results, but increased postoperative morbidity rates, compared with the more radical resection types. The purpose of the present study was to present the outcomes of three consecutive CPs performed in our department.

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Processing dissociated cells for transcriptomics is challenging when targeting small brain structures, like brainstem nuclei, where cell yield may be low. Here, we present a protocol for dissecting, dissociating, and cryopreserving mouse brainstem that allows asynchronous sample collection and downstream processing of cells obtained from brainstem tissue in neonatal mice. Although we demonstrate this protocol with the isolated preBötzinger complex and downstream SmartSeq3 cDNA library preparation, it could be readily adapted for other brainstem areas and library preparation approaches.

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A meta-analysis was designed and conducted to estimate the effect of tumoral microvessel density (MVD) on the survival of patients with osteosarcoma. There was no difference between high and low MVD regarding the overall (OS) and disease-free (DFS) survival. Low MVD tumors displayed a lower DFS at the third year of follow-up.

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Ameloblastin (AMBN) is best characterized for its role in dental enamel formation, regulating cell differentiation and mineralization, and cell matrix adhesion. However, AMBN has also been detected in mesenchymal stem cells in addition to bone, blood, and adipose tissue. Using immunofluorescence in a pilot scheme, we identified that AMBN is expressed in different parts of the gastrointestinal (GI) tract.

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Objective: The aim of the present series was first to present our experience in the management of 37 patients with spontaneous pneumomediastinum (SPM), and further to indicate the necessity of identifying true SPM cases as they are currently inadequately defined.

Methods: This is a single-center, retrospective study, conducted in a university hospital. Consecutive adult patients with pneumomediastinum (PM) between January 2009 and March 2020 were involved in the series.

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The surge in 'Big data' has significantly influenced biomaterials research and development, with vast data volumes emerging from clinical trials, scientific literature, electronic health records, and other sources. Biocompatibility is essential in developing safe medical devices and biomaterials to perform as intended without provoking adverse reactions. Therefore, establishing an artificial intelligence (AI)-driven biocompatibility definition has become decisive for automating data extraction and profiling safety effectiveness.

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Bladder malignancy represents the fourth most common cancer in men and the eighth in women in the western world. Women under 75 years of age have a risk of 0.5-1% of developing bladder cancer.

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Prenatal paracetamol exposure has been associated with neurodevelopmental outcomes in childhood. Pharmacoepigenetic studies show differences in cord blood DNA methylation between unexposed and paracetamol-exposed neonates, however, causality and impact of long-term prenatal paracetamol exposure on brain development remain unclear. Using a multi-omics approach, we investigated the effects of paracetamol on an model of early human neurodevelopment.

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Pancreaticoduodenectomy is the procedure of choice for benign or malignant tumors of the periampullary region. The preservation of the pylorus has been established as the mostly utilized approach during pancreaticoduodenectomy among the majority of specialized, in the surgical treatment of pancreatic cancer, centers worldwide. The factors that influenced this predilection are the shorter operation times, the less intraoperative blood loss, the decreased technical difficulty, and the quite similar short- and long-term outcomes compared to the classic Whipple.

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