MicroRNAs are fine regulators of the whole-body adaptive response but their use as biomarkers is limited by the lack of standardized pre- and post-analytical procedures. This work aimed to compare different normalization approaches for RT-qPCR data analyses, in order to identify the most reliable and reproducible method to analyze circulating miRNA expression profiles in sedentary and highly-trained subjects. As the physically active status is known to affect miRNA expression, they could be effective biomarkers of the homeostatic response. Following RNA extraction from plasma, a panel of 179 miRNAs was assayed by RT-qPCR and quantified by applying different normalization strategies based on endogenous miRNAs and exogenous oligonucleotides. hsa-miR-320d was found as the most appropriate reference miRNA in reducing the technical variability among the experimental replicates and, hence, in highlighting the inter-cohorts differences. Our data showed an association between the physically active status and specific skeletal muscle- and bone-associated circulating miRNAs profiles, revealing that established epigenetic modifications affect the baseline physiological status of these tissues. Since different normalization strategies led to different outputs, in order to avoid misleading interpretation of data, we remark the importance of the accurate choice of the most reliable normalization method in every experimental setting.
Purpose The COVID-19 pandemic is importantly affecting the orthopaedic practice all over the world with Northern Italy being the first European area that faced the worst scenario. In this study, the changes in clinical practice occurred in an orthopaedic center in Milan are described. Methods Number and type of admissions, outpatients cancelled and preserved, emergency room, and intensive care unit activities have been analyzed in the timeframe of seven weeks since the beginning of the pandemic (from February 24th to April 10th) and compared with the same period in 2019. Results The planned surgical admissions declined from 2172 in 2019 to 664 in 2020 (69.42%, p < 0.0001), while emergencies increased from 158 to 268 (69.62%). The rehabilitation admissions declined from 414 to 69 (83.33%). The overall admission decreased by 63.52%, the trend showed a drop in the last weeks. Surgery performed in the COVID-19 operating room increased by 16.7% in the last week. Seven deaths occurred (0.7% of all orthopaedics and trauma admissions) compared with four (0.1%) which happened in the same period in 2019 (p = 0.004). Six of these patients were suffering from COVID-19. A total of 23,580 outpatients (93.8%) were cancelled. Emergency room consultations declined by 68.14% and 63.47% among white and green priority, respectively, while increased by 25% and 100% among yellow and red, respectively. Conclusion These numbers show the radical changed scenario in an orthopaedic center in Milan during COVID-19 pandemic. Elective surgery declined rapidly going close to zero, outpatient admissions were restricted to cases that cannot be postponed, while emergencies increased due to the role played by the hospital as referral orthopaedic centre during the pandemic. The still ongoing emergency will have important impacts on the overall orthopaedic healthcare management for the next months.
Background: The Coronavirus disease 2019 (COVID-19) outbreak has put strain on many healthcare systems around the world, with important consequences. The aim of this paper is to describe the impact of the COVID-19 pandemic on hip and knee arthroplasties in an Italian high-volume orthopedic center, located in the region of the country first and worst affected by the Coronavirus. Methods: Data from an institutional database were retrospectively analyzed to obtain the number of hip and knee arthroplasties performed from February 24 to April 10 2020. The figures were compared with those of the same 7-week period of the last year (2019). Results: The number of hip and knee arthroplasties showed a decrease from 706 in the same period of 2019 to 166 (76.5% less) in the current year. In 2019, a mean of 101 ± 9 hip and knee arthroplasties were performed per week compared with a mean of 24 ± 34 in 2020. Ten patients tested positive for SARS-CoV2 during their hospital stay. Two of these patients died after a regular postoperative period after developing unexpectedly COVID-19 during rehabilitation. The mortality in the 7-week period of the current year was 1.2% compared with 0% in 2019. Conclusion:The outbreak of COVID-19 had a considerable effect in our center on the number of hip and knee arthroplasties that rapidly decreased to 0 in parallel to the worsening of the situation in the country. Efforts will be soon requested because our practice is going to deal with the after-effects of the pandemic in the near future.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.