596 results match your criteria: "Kanellopoulos); LaserVision Clinical & Research Eye Institute[Affiliation]"

To report a novel application within the USA of excimer ablation for the normalization of central corneal refractive irregularity, combined with higher fluence CXL in the effective management and visual rehabilitation of progressive keratoconus. 17 consecutive cases with progressive keratoconus were treated with corneal surface excimer laser ablation normalization using topography-guided (Contura) myopic ablation for customized corneal re-shaping with a 6 mm optical zone. The epithelial removal was accounted for by adding a -2.

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This study explores the layer-by-layer (LBL) modification of polyacrylonitrile (PAN) hollow fibers for effective Mg/Li separation. It employs an LBL method of surface modification using polyelectrolytes, specifically aiming to enhance ion selectivity and improve the efficiency of lithium extraction from brines or lithium battery wastes, which is critical for battery recycling and other industrial applications. The modification process involves coating the hydrolyzed PAN fibers with alternating layers of positively charged polyelectrolytes, such as poly(allylamine hydrochloride) (PAH), polyethyleneimine (PEI), or poly(diallyldimethylammonium chloride) (PDADMAC) and negatively charged polyelectrolytes, such as poly(styrene sulfonate) (PSS), to form polyelectrolyte multilayers (PEMs).

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  • Background: The study focused on the effectiveness of tranexamic acid in preventing bleeding and reducing the need for platelet transfusions in patients with blood cancers receiving intensive treatment.
  • Methods: An international trial (TREATT) involved 616 adults under chemotherapy or stem-cell transplant, who were randomly assigned to receive either tranexamic acid or a placebo while monitored for bleeding and platelet recovery.
  • Findings: Out of 1736 screened patients, 597 were included in the final analysis, revealing demographic details and outcomes related to bleeding events and mortality rates among the two groups.
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The importance of growth differentiation factor 15 and interleukin 6 serum levels in inflammatory bowel diseases.

J Physiol Biochem

November 2024

Department of Gastroenterology, Medical School of National and Kapodistrian University of Athens, General Hospital of Athens "Laiko", 17 Agiou Thoma street, Athens, 11527, Greece.

Article Synopsis
  • Recent studies on growth differentiation factor 15 (GDF-15) and interleukin-6 (IL-6) in inflammatory bowel diseases (IBD) are limited, prompting this assessment of their serum levels in patients with Crohn's disease (CD) and ulcerative colitis (UC).
  • The study involved 122 CD patients, 71 UC patients, and 44 healthy controls, revealing that elevated GDF-15 and IL-6 levels in active CD were significantly associated with various patient characteristics, including CRP levels and hospitalization rates.
  • In UC, while both GDF-15 and IL-6 were higher in active patients compared to controls, only IL-6 showed consistent associations with disease activity,
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Genetic deletion and pharmacological inhibition are distinct approaches to unravelling pain mechanisms, identifying targets and developing new analgesics. Both approaches have been applied to the voltage-gated sodium channels Na1.7 and Na1.

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Post-COVID-19 cognitive deficits are common, persistent, and disabling. Evidence on effective treatments is limited. The goal of this study was to investigate the efficacy of a digital intervention to reduce cognitive and functional deficits in adults with persistent post-COVID-19 cognitive dysfunction.

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The concept of radiotheranostics relies on the overexpression of a biomolecular target on malignant cells to direct diagnostic/therapeutic radionuclide-carriers specifically to cancer lesions. The concomitant expression of more than one target in pathological lesions may be elegantly exploited to improve diagnostic sensitivity and therapeutic efficacy. Toward this goal, we explored a first example of a combined application of [Tc]Tc-DT11 (DT11, N-Lys(MPBA-PEG4)-Arg-Arg-Pro-Tyr-Ile-Leu-OH; NTSR-specific) and [Tc]Tc-DB7(DB7, N-PEG2-DPhe-Gln-Trp-Ala-Val-Gly-His-Leu-NHEt; GRPR-specific) in prostate cancer models.

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Background Children with cerebral palsy (CP) often experience motor and postural disorders, along with spasticity, muscle weakness, muscle-tendon contractures, and decreased joint range of motion (ROM). Muscle-tendon contractures are typically addressed through orthopaedic surgery to improve joint ROM, which can result in further muscle weakness. This study aimed to investigate the impact of selective percutaneous myofascial lengthening (SPML) combined with functional physiotherapy on joint passive ROM and isometric muscle strength in the lower extremities of children with spastic CP.

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Biological functions of extracellular vesicles from mammalian cells.

Biomed J

October 2024

Department of Biomedical Sciences, Arthur Dugoni School of Dentistry, University of the Pacific, San Francisco, USA. Electronic address:

Extracellular vesicles (EVs) are enclosed by a phospholipid bilayer and can be secreted by most types of cells. EVs deliver cargo from the secreting cell into the cytoplasm of recipient cells, influencing the function of the recipient cells. EVs are attracting increasing attention from a broad range of clinicians and scientists due to their ability to promote or inhibit various physiological pathways or pathological conditions.

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Gilteritinib is the current standard of care for relapsed or refractory fms related receptor tyrosine kinase 3 (FLT3)-mutated acute myeloid leukemia in many countries, however outcomes for patients relapsing after contemporary first-line therapies (intensive chemotherapy with midostaurin, or nonintensive chemotherapy with venetoclax) are uncertain. Moreover, reported data on toxicity and health care resource use is limited. Here, we describe a large real-world cohort of 152 patients receiving single-agent gilteritinib in 38 UK hospitals.

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Evaluation of ABD-Linked RM26 Conjugates for GRPR-Targeted Drug Delivery.

ACS Omega

August 2024

Department of Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, AlbaNova University Center, 106 91 Stockholm, Sweden.

Article Synopsis
  • Targeting the gastrin-releasing peptide receptor (GRPR) using the peptide RM26 has shown promise in imaging for prostate cancer, but its quick clearance from the body limits its effectiveness as a therapeutic agent.
  • To prolong the peptide's half-life, researchers have experimented with an albumin-binding domain (ABD) to create a new series of ABD-RM26 conjugates aimed at improving the stability and reducing kidney uptake.
  • The second-generation construct ABD-RM26 Gen 2A demonstrated significantly lower kidney uptake—almost 6 times less—improving biodistribution, but it had reduced effectiveness in binding to GRPR, indicating potential for further development in targeted cancer therapy.
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Neurons rely on mitochondrial energy metabolism for essential functions like neurogenesis, neurotransmission, and synaptic plasticity. Mitochondrial dysfunctions are associated with neurodevelopmental disorders including Fragile X syndrome (FXS), the most common cause of inherited intellectual disability, which also presents with motor skill deficits. However, the precise role of mitochondria in the pathophysiology of FXS remains largely unknown.

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The Role of Biomarkers in Lung Cancer Screening.

Cancers (Basel)

May 2024

Oncology Unit, 3rd University Department of Internal Medicine, "Sotiria" Athens' Chest Diseases Hospital, 152 Mesogeion Av., 11527 Athens, Greece.

Background: Lung Cancer Screening (LCS) is an evolving field with variations in its implementation in various countries. There are only scarce data from National LCS programs.

Aim: We aim to provide an up-to-date overview of the current evidence regarding the use of biomarkers in LCS.

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Gastrin releasing peptide receptor (GRPR) is overexpressed in prostate cancer (PC-3) and can be used for diagnostic purposes. We herein present the design and preclinical evaluation of two novel NOTA/NODAGA-containing peptides suitable for labeling with the positron emission tomography (PET) radionuclide Ga-68. These analogs are based on the previously reported GRPR-antagonist DOTAGA-PEG2-[Sar]RM26, developed for targeted radiotheraostic applications.

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Gastrin-releasing peptide receptor (GRPR)-antagonists have served as motifs in the development of theranostic radioligands for prostate cancer. Our efforts have been focused on the development of radiolabeled RM26 (H-DPhe-Gln-Trp-Ala-Val-Gly-His-Sta-Leu-NH) analogs, such as [In]In-DOTAGA-PEG2-RM26. We recently showed that its Gly/Sar-substituted version, [In]In-AU-RM26-M1, resisted degradation by neprilysin (NEP) while in circulation and achieved higher tumor uptake in mice.

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: Scheimpflug tomography has for many years been an integral part of our pre-operative assessment in cataract extraction. We retrospectively reviewed the incidence of topographic keratoconus and keratoconus suspicion in our routine cataract surgery population over 5 years. The Laservision Clinical and Research Institute, Athens, Greece.

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Article Synopsis
  • Invasive prenatal testing methods like amniocentesis and chorionic villus sampling can provide important information about a fetus's health but come with small risks of miscarriage and infection, complicating parents' choices.
  • Various factors, including demographic, clinical, and psychological aspects, affect how parents decide to pursue these tests, emphasizing the need for informed decision-making aligned with personal values.
  • A systematic review of 17 articles revealed that factors such as maternal age, education, ethnicity, and attitudes toward pregnancy termination are significant in the decision-making process for invasive prenatal testing.
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infection induces DNA Double-Strand Breaks (DSBs) and consequently activates the DNA Damage Response pathway (DDR) and senescence in gastric epithelium. We studied DDR activation and senescence before and after the eradication of the pathogen. Gastric antral and corpus biopsies of 61 patients with infection, prior to and after eradication treatment, were analyzed by means of immunohistochemistry/immunofluorescence for DDR marker (γH2AΧ, phosporylated ataxia telangiectasia-mutated (pATM), p53-binding protein (53BP1) and p53) expression.

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Previously, we designed the EuK-based PSMA ligand BQ0413 with an maE chelator for labeling with technetium-99m. It showed efficient tumor targeting, but our preclinical data and preliminary clinical results indicated that the renal excretion levels need to be decreased. We hypothesized that this could be achieved by a decrease in the ligand's total negative charge, achieved by substituting negatively charged glutamate residues in the chelator with glycine.

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Article Synopsis
  • * The study aimed to determine the feasibility, acceptability, and safety of eOrygen while also measuring changes in clinical and psychosocial outcomes before and after the intervention.
  • * Findings showed that eOrygen was feasible and acceptable, with a low refusal rate, and further qualitative interviews revealed barriers and facilitators to implementing blended care models from the perspectives of both young people and clinicians.
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The use of metabolically stabilized, radiolabeled somatostatin (SST) analogs ([Ga]Ga/[Lu]Lu-DOTA-TATE/TOC/NOC) is well established in nuclear medicine. Despite the pivotal role of these radioligands in the diagnosis and therapy of neuroendocrine tumors (NETs), their inability to interact with all five somatostatin receptors (SSTR) limits their clinical potential. [In]In-AT2S is a radiolabeled DOTA-conjugate derived from the parent peptide SST-14 that exhibits high binding affinity to all SSTR subtypes, but its poor metabolic stability represents a serious disadvantage for clinical use.

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The effects of prolonged pacifier use on language development in infants and toddlers.

Front Psychol

February 2024

Brain Health Department, Nestlé Institute of Health Sciences, Société des Produits Nestlé SA, Vers-Chez-les-Blanc, Lausanne, Switzerland.

Pacifiers are a common soothing tool used by parents to calm and comfort infants and toddlers. While pacifiers can provide temporary relief, there is growing concern about the potential long-term effects of prolonged pacifier use on language and cognitive development. Previous studies have suggested that prolonged use of pacifiers may have negative consequences on language outcomes in infants and toddlers, especially during the first few years of life known to be a critical period for language development.

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Multiple sclerosis (MS) is an inflammatory autoimmune disorder of the central nervous system and the leading cause of progressive neurological disability in young adults. It decreases the patient's lifespan by about 10 years and affects women more than men. No medication entirely restricts or reverses neurological degradation.

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Purpose: The safety and long-term efficacy of automated ray-tracing customized myopic and myopic astigmatic femtosecond laser-assisted LASIK.

Methods: This consecutive case series retrospective analysis, of 20 subjects (40 eyes) treated with automated raytracing named Wavelight Plus, to include low and high order aberrations based on a three-dimensional custom virtual eye for each case-calculated from interferometry data-obtained from a single diagnostic device that also provides Hartman-Shack Wavefront and Scheimpflug tomography data. We evaluated before and after the customized LASIK procedure: visual acuity, refractive error, high order aberrations, contrast sensitivity, and psychometric post-operative visual function data.

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