Publications by authors named "Ioannis Dimopoulos"

Screening of nutritional status of cancer patients plays a crucial role in the perioperative management and is mandatory for the certification of oncological centers by the German Cancer Society (DKG). The available screening tools do not differentiate between muscle and adipose tissue. Recent advances in computed tomography (CT) and magnetic resonance imaging (MRI) as well as the automatic picture archiving communication system (PACS) imaging analysis by high performance reconstruction systems have recently enabled a detailed analysis of adipose tissue and muscle quality.

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Background: Type 1 diabetes mellitus (T1DM) is characterized by immune and metabolic dysregulation. Apo1/Fas is implicated in maintaining homeostasis of the immune system. Cytokeratin-18 (cCK-18) is a predictive marker of liver disorders in T2DM.

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Purpose: To describe a novel optical coherence tomography (OCT) finding of outer retina microcavitations in RP1 -related retinopathy and other retinal degenerations.

Methods: Medical charts and OCT images of 28 patients with either autosomal dominant retinitis pigmentosa or autosomal recessive retinitis pigmentosa RP1 -related retinopathy were reviewed. Outer retina microcavitations were defined as hyporeflective OCT structures of at least 30 µ m in diameter between the ellipsoid zone and retinal pigment epithelium.

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Purpose: This systematic review evaluates the safety and efficacy of ocular gene therapy using adeno-associated virus (AAV).

Methods: MEDLINE, Embase, Cochrane Central Register of Controlled Trials, and ClinicalTrials.gov were searched systematically for controlled or non-controlled interventional gene therapy studies using key words related to retinal diseases, gene therapy, and AAV vectors.

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Purpose: To assess the long-term safety and efficacy of AAV2-REP1 in choroideremia (CHM) patients, and to test a potential antisense oligonucleotide therapy for CHM.

Design: Extended, prospective phase 1/2 clinical trial and laboratory investigation.

Methods: Five patients who received a single subfoveal injection of AAV2-REP1 were studied.

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Curative Treatment of Esophageal Carcinoma - Disease, Diagnostics, Therapy in 2022 Surgical resection remains the gold standard for non-metastatic carcinoma of the lower and middle third of the esophagus. Locally advanced tumors (T3) are pretreated neoadjuvantly (radiochemotherapy) or perioperatively (chemotherapy). A differentiated primary staging and an interdisciplinary case presentation are of essential importance today.

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Achalasia Update The neurodegenerative disease achalasia (obsolete: "cardiac spasm") is the second most common functional disease of the esophagus after reflux disease. It is associated with an extremely high level of suffering for the patient. Pathophysiologically, it is a combination of a lack of swallowing-reflex relaxation at the gastric entrance and disturbed peristalsis of the tubular esophagus.

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Aim: Oleocanthal and oleacein (OC/OL) have important and antitumor properties; however, there is no data about their anticancer activity in humans. The aim of this pilot study was to test if patients at early stage of chronic lymphocytic leukemia (CLL) could adhere to and tolerate an intervention with high OC/OL extra virgin olive oil (EVOO) and if this intervention could lead to any changes in markers related to the disease.

Methods: A pilot dietary intervention (DI) was made in patients with CLL in Rai stages 0-II who did not follow any treatment (NCT04215367).

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Introduction: Thyroxine is essential for nervous system development. Subclinical hypothyroidism (SCH), also known as mild thyroid failure, is associated with impaired cognitive function in children and mood disorders in adults. Serotonin is also involved in brain development as well as in mood and behavior modulation.

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Background: Apoptosis antigen 1/FAS receptor (APO1/Fas) signaling in endothelial cells plays a significant role in angiogenesis while increased mean platelet volume (MPV) is an important marker for platelet activation. We investigated the possible correlation between APO1/Fas and both metabolic parameters and platelet activity (indicated by the MPV) in a healthy pediatric population.

Methods: One hundred and eighty-five children, aged 5-17 years old, were enrolled in the study.

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Article Synopsis
  • Epiretinal membrane (ERM) is a common issue in patients over 50, and disorganization of the retinal inner layers (DRIL) can predict poor visual acuity (VA) following ERM surgery.
  • A study reviewed the OCT images and medical records of 81 pseudophakic patients who had ERM surgery, focusing on the correlation between preoperative DRIL and VA outcomes at 3 and 6 months post-surgery.
  • Results showed that 41% of patients had severe DRIL, which was linked to worse baseline VA and less improvement in VA after surgery, indicating DRIL as a significant predictor of long-term visual outcomes in these patients.
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Background:  The support group "Arbeitskreis der Pankreatektomierten e. V. (AdP)" was founded in 1976 and is the largest group of individuals affected by pancreatic disease in Germany.

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Introduction: Abnormalities in adipose tissue AdipoR1; adaptor protein, phosphotyrosine interaction, PH domain, and leucine zipper containing 1 (APPL1); GTPase Rab5; adiponectin; leptin; and visfatin in adults with obesity have been associated with metabolic disturbances.

Objective: The objective of this study was to examine whether pediatric obesity disrupts elements of the adiponectin signaling pathway and GTPase Rab5 in adipose tissue.

Methods: Primary adipocyte cultures of subcutaneous abdominal tissue were obtained from 96 lean and 66 children and adolescents with obesity (AO).

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Purpose: To develop a reliable and efficient method for quantifying the area of preserved retinal pigment epithelium (RPE), facilitating the evaluation of disease progression or response to therapy in choroideremia (CHM).

Methods: The fundus autofluorescence images of CHM patients were captured at baseline and 1 year. A Photoshop-based method was developed to allow the reliable measurement of the RPE area.

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Purpose: To estimate the roles of triglyceride/high-density lipoprotein cholesterol (TG/HDL) ratio and uric acid in predisposition for metabolic syndrome (MetS) and its components in healthy children.

Methods: Anthropometric and biochemical analyses were performed on 110 children, aged 5 to 12 years, from the Greek county of Laconia. The children were studied as a whole population and in separate groups according to age and predisposition to MetS after taking into consideration International Diabetes Federation criteria, body mass index, and lipid profile.

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Purpose: The aims of the present study are to present the epidemiology and management of patients hospitalized with odontogenic infections in a major Greek hospital from 2015 to 2016 and to find out whether the basic principles of management of odontogenic infections were followed before referral to the emergency department of the Oral and Maxillofacial Surgery Clinic (OMFSED).

Methods: A retrospective study of the patients hospitalized with odontogenic infections was performed, including management both prior and after referral to the OMFSED.

Results: During the two-year period from 2015 to 2016, 102 patients, 54 men (52.

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Purpose: To assess the safety of a recombinant adeno-associated viral vector expressing REP1 (rAAV2.REP1) in choroideremia subjects.

Methods: Design: Phase I clinical trial.

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Background: A dietary supply of docosahexaenoic acid (DHA) and arachidonic acid (AA) is critical for neonatal retinal development. Both are absent/minimal in parenteral nutrition (PN) using soy-oil emulsions ([SO] Intralipid®) traditionally used for neonatal intestinal failure. In contrast, fish-oil emulsions ([FO] Omegaven®) are enriched in DHA/AA.

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Purpose: To evaluate full-field sensitivity thresholds (FSTs) across a wide range of choroideremia (CHM) disease stages and to determine their applicability as functional endpoints for CHM clinical trials.

Methods: Thirty CHM subjects (60 eyes) and 50 healthy controls (50 eyes) underwent FST testing under dark-adapted conditions to determine rod- and cone-mediated FSTs. Central retinal structure and function were assessed using fundus autofluorescence and microperimetry.

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Purpose Of Review: Although much has been written to define the phenotype and genotype of choroideremia (CHM), research continues to provide new insights that serve to better understand its pathogenesis and the directions for potential experimental therapies.

Recent Findings: We would like to highlight new findings, expanding the type of disease-causing mutations to include mutations in the CHM promoter that will dramatically influence gene expression. Information derived from careful phenotyping of patients points increasingly to the central role of the retinal pigment epithelium as the key cell layer affected in the degenerative process.

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Camurati-Engelmann disease (CED), or progressive diaphyseal dysplasia, is an uncommon bone dysplasia that is inherited in an autosomal-dominant pattern. The disease mainly affects the diaphyses of the long bones but can induce sclerotic changes to the facial skeleton and skull base. The diagnosis of CED is based on clinical and radiologic features.

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Purpose: To report the retinal phenotype of a rare case of long-chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD)/trifunctional protein (TFP) deficiency diagnosed in his late 40s with ocular findings of diffuse chorioretinal atrophy and bilateral retinoschisis.

Methods: An acylcarnitine profile assay revealed LCHAD/TFP deficiency in a 45-year-old man with a history of high myopia, bilateral decreased vision, episodic rhabdomyolysis, and peripheral neuropathy. Ocular findings were evaluated with spectral domain optical coherence tomography (Spectralis OCT; Heidelberg Engineering, Heidelberg, Germany) and color fundus photography.

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