Publications by authors named "Mehmet Davrandi"

Resonant photonic refractive index sensors have made major advances based on their high sensitivity and contact-less readout capability, which is advantageous in many areas of science and technology. A major issue for the technological implementation of such sensors is their response to external influences, such as vibrations and temperature variations; the more sensitive a sensor, the more susceptible it also becomes to external influences. Here, we introduce a novel bowtie-shaped sensor that is highly responsive to refractive index variations while compensating for temperature changes and mechanical (linear and angular) vibrations.

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Background: Antibody-deficient patients are at high risk of respiratory tract infections. Many therefore receive antibiotic prophylaxis and have access to antibiotics for self-administration in the event of breakthrough infections, which may increase antimicrobial resistance (AMR).

Objectives: To understand AMR in the respiratory tract of patients with antibody deficiency.

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Peri-implantitis is a disease influenced by dysbiotic microbial communities that play a role in the short- and long-term outcomes of its clinical treatment. The ecological triggers that establish the progression from peri-implant mucositis to peri-implantitis remain unknown. This investigation describes the development of a novel in vitro microcosm biofilm model.

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Background: Patients with antibody deficiency suffer chronic respiratory symptoms, recurrent exacerbations, and progressive airways disease despite systemic replacement of IgG. Little is known about the respiratory tract biology of these patients.

Objective: We sought to measure immunoglobulin levels, inflammatory cytokines, and mediators of tissue damage in serum and sputum from patients with antibody deficiency and healthy controls; to analyze the respiratory microbiome in the same cohorts.

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Purpose: Chronic granulomatous disorder (CGD) is a primary immunodeficiency which is frequently complicated by inflammatory colitis and is associated with systemic inflammation. Herein, we aimed to investigate the role of the microbiome in the pathogenesis of colitis and systemic inflammation.

Methods: We performed 16S rDNA sequencing on mucosal biopsy samples from each segment of 10 CGD patients' colons and conducted compositional and functional pathway prediction analyses.

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Aims: The primary aim of this investigation was to analyse the periodontal microbiome in patients with aggressive periodontitis (AgP) following treatment.

Methods: Sixty-six AgP patients were recalled on average 7 years after completion of active periodontal treatment and had subgingival plaque samples collected and processed for 16S rRNA gene sequencing analyses.

Results: Of 66 participants, 52 showed persistent periodontal disease, while 13 participants were considered as "successfully treated AgP" (no probing pocket depths >4 mm) and 1 was fully edentulous.

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