Establishment of feijoa () callus and cell suspension cultures and identification of arctigenin - a high value bioactive compound.

Feijoa (), also known as pineapple guava, is a member of the Myrtaceae family and is well known for its fruit. Chemical profiling of the different tissues of the feijoa plant has shown that they generate an array of useful bioactive compounds which have health benefits such as significant antioxidant activities. In this study, an culture system has been developed, which could be explored to extract high-value bioactive compounds from feijoa.

Retrospective Analysis of Patients Undergoing Arthroscopic Rotator Cuff Repair at a Single Institution Yields a 0.11% Postoperative Infection Rate.

Purpose: To establish an infection rate following primary arthroscopic rotator cuff repair (ARCR) from a single institutional database and to ascertain whether there is a relationship between the use of preoperative corticosteroid injection (CSI) and the risk of postoperative infection.

Methods: All medical records at a single institution were retrospectively reviewed to identify patients who had undergone arthroscopic repair from January 2016 to December 2018. Patient charts were reviewed for CSI treatment within 6 months of surgery, superficial or deep infection within 2 months postoperatively, and specific treatment of the infection.

No Patients Having Elective Outpatient Orthopaedic Surgery Performed in an Ambulatory Surgery Center Using Preoperative Screening Protocols During the Coronavirus Pandemic Developed COVID-19.

Purpose: The purpose of this study is to determine the safety of elective, outpatient orthopaedic sports procedures during the Coronavirus (COVID-19) pandemic at a high-volume orthopaedic practice.

Methods: All patients who were scheduled for elective, outpatient orthopaedic sports medicine procedures at 1 of 2 of outpatient surgical centers between July 1, 2020, and December 31, 2020, were asked to complete a custom survey during a postoperative clinic visit or phone call at a minimum of 2 weeks or were subject to a routine screening questionnaire and temperature screening at the time of the first postoperative follow-up visit. The survey questionnaire assessed for any COVID-19-related symptoms.

Quantification of polyhydroxyalkanoates in mixed and pure cultures biomass by Fourier transform infrared spectroscopy: comparison of different approaches.

Unlabelled: Fourier transform infrared (FTIR) spectroscopy was used in this study for the rapid quantification of polyhydroxyalkanoates (PHA) in mixed and pure culture bacterial biomass. Three different statistical analysis methods (regression, partial least squares (PLS) and nonlinear) were applied to the FTIR data and the results were plotted against the PHA values measured with the reference gas chromatography technique. All methods predicted PHA content in mixed culture biomass with comparable efficiency, indicated by similar residuals values.

In vivo effect of pneumonia on surfactant disaturated-phosphatidylcholine kinetics in newborn infants.

Background: Bacterial pneumonia in newborns often leads to surfactant deficiency or dysfunction, as surfactant is inactivated or its production/turnover impaired. No data are available in vivo in humans on the mechanism of surfactant depletion in neonatal pneumonia. We studied the kinetics of surfactant's major component, disaturated-phosphatidylcholine (DSPC), in neonatal pneumonia, and we compared our findings with those obtained from control newborn lungs.