Publications by authors named "Escher P"

Article Synopsis
  • This project aimed to investigate the standards of genetic testing and counseling for patients with inherited retinal diseases (IRDs) in select European countries, focusing on expert opinions about current challenges and potential improvements in patient care.
  • A survey was distributed to professionals across ten European nations, gathering data on the prevalence of genetic testing and counseling practices.
  • Results showed that while genetic tests are common and largely funded by public health services, many IRD patients still lack adequate testing and counseling, highlighting the need for better education for healthcare providers, improved access to advanced testing, and more genetic counselors.
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Background: Biomarker-based therapies are increasingly used in cancer patients outside clinical trials. Systematic assessment of patient-reported outcomes (PRO) is warranted to take patients' perspectives during biomarker-based therapies into consideration. We assessed the feasibility of an electronic PRO assessment via a smartphone application.

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Introduction: Mutational screening of inherited retinal disorders is prerequisite for gene targeted therapy. Our aim was to report and analyze the proportions of mutations in inherited retinal disease (IRD)-causing genes from a single center in Switzerland in order to describe the distribution of IRDs in Western Switzerland.

Methods: We conducted a retrospective study of patient records.

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Chromosomal abnormalities on the short arm of chromosome 2 in the region p11.2 have been associated with developmental delay, intellectual disability, facial anomalies, abnormal ears, skeletal and genital malformations. Here we describe a patient with a de novo interstitial heterozygous microdeletion on the short arm of chromosome 2 in the region p11.

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Purpose: To assess the clinical resolution capacities of a novel high-resolution optical coherence tomography (High-Res OCT).

Methods: Eight healthy volunteers were included in this observational study. Using the SPECTRALIS High-Res OCT device (Heidelberg Engineering, Heidelberg) macular b-scans were taken and compared with b-scans acquired with a SPECTRALIS HRA+OCT device (Heidelberg Engineering, Heidelberg).

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Article Synopsis
  • The study aimed to explore the clinical and genetic relationship of a specific genetic variant (c.469 G>A p.(Asp157Asn)) in the PRPH2 gene found in two Italian siblings.
  • Both siblings underwent a series of ophthalmic tests that revealed visual impairments and clinical signs pointing to Stargardt retinopathy, despite differences in their symptoms.
  • Genetic analysis confirmed the presence of a pathogenic variant in PRPH2, indicating potential inherited retinal degenerations with varying clinical presentations, showcasing the complexity of genetic conditions affecting vision.
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Background: Clustering of microglia around the vasculature has been reported in the retina and the brain after systemic administration of lipopolysaccharides (LPS) in mice. LPS acts via activation of Toll-like receptor 4 (TRL4), which is expressed in several cell types including microglia, monocytes and vascular endothelial cells. The purpose of this study was to investigate the effect of systemic LPS in the pigmented mouse retina and the involvement of endothelial TLR4 in LPS-induced retinal microglia activation.

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This study aims to investigate the effect of a systemic lipopolysaccharide (LPS) stimulus in the course of laser-induced choroidal neovascularization (CNV) in C57BL/6 J mice. A group of CNV-subjected mice received 1 mg/kg LPS via the tail vein immediately after CNV induction. Mouse eyes were monitored with fluorescein angiography for 2 weeks.

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Objectives/hypothesis: Patients with cleft lip and/or palate (CLP) are at increased risk of malnutrition. Acute and chronic malnutrition have been associated with elevated risk of postsurgical wound complications, adding morbidity and cost to patients and their families. To study the association between demographic factors, including insurance type, race, and median neighborhood income (MNI), and malnutrition in patients with CLP.

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The photoreceptor-specific nuclear receptor Nr2e3 is not expressed in Nr2e3 mice, a mouse model of the recessively inherited retinal degeneration enhanced S-cone sensitivity syndrome (ESCS). We characterized in detail C57BL/6J Nr2e3 mice in vivo by fundus photography, optical coherence tomography and fluorescein angiography and, post mortem, by histology and immunohistochemistry. White retinal spots and so-called 'rosettes' first appear at postnatal day (P) 12 in the dorsal retina and reach maximal expansion at P21.

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Purpose: The purpose of this study was to investigate the clinical and genetic features of a man and his daughter with posterior polymorphous corneal dystrophy (PPCD), referred to our clinic for Descemet membrane endothelial keratoplasty. No other known relatives were affected.

Methods: Ophthalmic examination and histology, including electron microscopy, were performed.

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Article Synopsis
  • 22 Swiss patients diagnosed with Stargardt disease were genetically analyzed, finding that 50% had pathogenic bi-allelic variants, including two novel ones, with some patients showing varying degrees of clinical symptoms like "flecks" and "atrophy".
  • A dominant pathogenic variant was identified in 36% of the patients and traced back to a founder mutation in a specific Swiss area, highlighting the genetic uniqueness of this population.
  • The study emphasizes the need for systematic genetic testing in Stargardt patients to avoid harmful vitamin A supplementation and to ensure proper genetic counseling and monitoring for choroidal neovascularization risk.
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Objectives/hypothesis: To assess the prevalence of acute and chronic malnutrition at the time of surgery in patients with cleft lip and/or palate (CLP) at our institution, and to quantify nutrition as a risk factor for postsurgical complications following CLP surgery.

Study Design: Retrospective cohort study.

Methods: Retrospective review of 855 children undergoing initial cleft lip or palate surgery, or revision surgery after fistula/dehiscence of initial cleft repair.

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Background: Peroxisome proliferator-activated receptor-gamma (PPAR-γ) activators have anti-cancer effects. Our objective was to determine the effect of PPAR-γ ligands 15-deoxy-D -Prostaglandin J (15-PGJ ) and ciglitazone on proliferation, apoptosis, and NF-κB in human oral squamous cell carcinoma cell lines.

Methods: NA and CA9-22 cells were treated in vitro with 15-PGJ and ciglitazone.

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Article Synopsis
  • The study assessed the impact of a preoperative protocol using erythropoietin (EPO) and ferrous sulfate, alongside tranexamic acid (TXA), on blood transfusion requirements in patients with craniosynostosis undergoing surgery.
  • A retrospective analysis was conducted on 36 patients, comparing outcomes between a control group (pre-2014, receiving standard blood transfusions) and a study group (post-2014, following the new protocol).
  • Results showed the study group had significantly higher preoperative hemoglobin levels, lower intraoperative transfusion rates, and no postoperative transfusions, indicating the protocol effectively reduced the need for blood transfusions during and after surgery.
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Article Synopsis
  • The study presents a detailed examination of an adult male patient with McArdle disease, focusing on the progression of -linked pattern dystrophy over nine years through various ophthalmic tests.
  • At age 52, the patient was asymptomatic but developed yellow flecks in the macula that progressed to a pattern-like dystrophy within five years, observed through fundus imaging techniques.
  • The findings indicate that retinopathy is a clinical phenotype associated with McArdle disease, suggesting a link between impaired glycogen metabolism in retinal cells and the observed visual impairments.
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Basaloid squamous cell carcinoma (BSCC) with a spindle cell component of the head and neck is an uncommon entity. In this case, we present a radiology-pathology correlation of a rare laryngeal BSCC with sarcomatous transformation and osteosarcomatous differentiation involving the laryngeal cartilage, which thus mimicked clinically and radiographically osteosarcoma or chondrosarcoma with calcification. Microscopic examination revealed predominantly BSCC with extensive osseous metaplasia among sheets and nests of basaloid tumor cells.

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Purpose: To investigate whether autofluorescence lifetime patterns within retinal pigment epithelium (RPE) atrophy differ between age-related macular degeneration (AMD) and Stargardt disease (STGD).

Methods: Mean retinal autofluorescence lifetimes were measured in a short and a long spectral channel (SSC: 498-560 nm; LSC: 560-720 nm). Mean retinal fluorescence lifetimes were analyzed with corresponding clinical features, fundus images, fundus autofluorescence intensity images, and optical coherence tomography.

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Purpose: To assess the success of a protocol using preoperative erythropoietin (EPO) and iron with perioperative tranexamic acid (TXA) in reducing blood transfusion in sagittal craniosynostosis surgery.

Methods: A retrospective chart review of all sagittal craniosynostosis patients undergoing open repair at our institution since 2010 was conducted. A novel protocol of preoperative EPO with iron and perioperative TXA, along with a shift away from automatic transfusion, was initiated in 2014.

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