Publications by authors named "J A Metz"

This study aimed to improve our understanding of sleep problems as a comorbidity of hereditary deaf-blindness due to Usher syndrome type 2a. Fifteen patients with Usher syndrome type 2a with a conclusive genetic diagnosis and 15 unaffected controls participated in comprehensive sleep and activity assessments for 2 weeks, using the MotionWatch 8 actigraph and consensus sleep diary. Various sleep parameters including sleep opportunity window, sleep latency, sleep efficiency, and self-reported sleep quality were analysed.

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Competition in mesic sites and drought stress combined with short growing seasons in drier sites are key environmental factors along macroclimatic aridity gradients. They impose a triangular trade-off for local adaptation. However, as experiments have rarely disentangled their effects on plant fitness, uncertainty remained whether mesic populations are indeed better competitors and drier populations better adapted to drought stress and short season length.

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Article Synopsis
  • Ecotypic differentiation in plants shows significant trait differences along aridity gradients, particularly in leaf silicon concentration, which helps alleviate drought stress.
  • The study examined 15 sites in Israel along a macroclimatic aridity gradient while comparing north (moister) and south (drier) slopes.
  • Results revealed that leaf silicon concentration increases with aridity but does not differ by slope; this higher concentration may help plants either retain water or grow faster under drought conditions.
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The Scientific Investigation Committee of the American Academy of Restorative Dentistry offers this review of select 2023 dental literature to briefly touch on several topics of interest to modern restorative dentistry. Each committee member brings discipline-specific expertize in their subject areas that include (in order of appearance here): prosthodontics; periodontics, alveolar bone, and peri-implant tissues; dental materials and therapeutics; occlusion and temporomandibular disorders; sleep-related breathing disorders; oral medicine, oral and maxillofacial surgery, and oral radiology; and dental caries and cariology. The authors have focused their efforts on presenting information likely to influence the daily dental treatment decisions of the reader with an emphasis on current innovations, new materials and processes, emerging technology, and future trends in dentistry.

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Article Synopsis
  • Serology testing is vital for assessing the effectiveness of COVID-19 vaccines and detecting past infections by measuring antibodies against SARS-CoV-2.
  • This study validated four laboratory-developed serology tests for antibodies (IgG and IgM) against Spike and Nucleocapsid proteins, ensuring they met strict Clinical and Laboratory Standards Institute (CLSI) guidelines for reliability.
  • Results showed good linearity and precision across the tests, demonstrating their validity for identifying levels of antibodies, which is crucial for ongoing COVID-19 research and management.
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