A [FeFe] Hydrogenase-Rubrerythrin Chimeric Enzyme Functions to Couple H Oxidation to Reduction of HO in the Foodborne Pathogen .

[FeFe] hydrogenases are a diverse class of H-activating enzymes with a wide range of utilities in nature. As H is a promising renewable energy carrier, exploration of the increasingly realized functional diversity of [FeFe] hydrogenases is instrumental for understanding how these remarkable enzymes can benefit society and inspire new technologies. In this work, we uncover the properties of a highly unusual natural chimera composed of a [FeFe] hydrogenase and rubrerythrin as a single polypeptide.

Patients Residing in Areas of Increased Social Vulnerability Are at an Increased Risk for Prolonged Length of Stay and Mortality After Hip Fracture Surgery.

Introduction: Patients undergoing hip fracture surgery face notable risks of postoperative morbidity and mortality, and racial and socioeconomic disparities in outcomes exist. This study examined the effect of social vulnerability on outcomes after hip fracture surgery using the CDC's Social Vulnerability Index (SVI).

Methods: A retrospective study of 464 patients undergoing hip fracture surgery at a single institution from July 2020 to June 2023 was conducted.

Are Rapid Recovery Pathways Transferrable Across Institutions? Outcomes of a Community Hospital through the Implementation Process.

Background: Prior studies have found potential disparities in outcomes for patients undergoing total joint arthroplasty (TJA) in academic vs. community and high- vs. low-volume institutions.

Evaluating the Diagnostic Utility of Serum Laboratory Studies and Synovial Fluid Analysis in Identifying Periprosthetic Joint Infection in Metal Hip Revisions.

Background Metal-on-metal (MoM) bearing surfaces have been implicated as a cause of increased complication rates in total hip arthroplasty (THA), with local and systemic reactions identified. These reactions may cause abnormal laboratory results in common tests that are used to diagnose periprosthetic joint infection (PJI). The purpose of this study was to evaluate the utility of common laboratory studies in the diagnosis of PJI in patients undergoing revision THA with MoM bearings.

Functional roles of the [2Fe-2S] clusters in Synechocystis PCC 6803 Hox [NiFe]-hydrogenase reactivity with ferredoxins.

The HoxEFUYH complex of Synechocystis PCC 6803 (S. 6803) consists of a HoxEFU ferredoxin:NAD(P)H oxidoreductase subcomplex and a HoxYH [NiFe]-hydrogenase subcomplex that catalyzes reversible H oxidation. Prior studies have suggested that the presence of HoxE is required for reactivity with ferredoxin; however, it is unknown how HoxE is functionally integrated into the electron transfer network of the HoxEFU:ferredoxin complex.

Outcomes of Total Hip Arthroplasty With and Without a History of Hip Arthroscopy.

Studies have shown increased risk for dislocation, loosening, and revision in patients undergoing total hip arthroplasty (THA) after hip arthroscopy (HA). The authors examined differences in presentation and outcomes between patients who underwent THA with and without prior HA from 2016 to 2021. Twenty-one HA to THA patients were matched on age, sex, race, body mass index (BMI), American Society of Anesthesiology (ASA) score, and comorbidities to 100 THA controls.

Impaired diffusing capacity and COPD incidence in adults with symptoms and normal spirometry.

Background: Impaired diffusing capacity of the lung (DLCO) in the absence of post-bronchodilator (BD) airflow obstruction has been proposed as a marker of 'Pre-COPD'. However, the relationship between impaired DLCO and subsequent lung function decline and COPD incidence has not been examined in-depth.

Methods: We conducted an observational study of adults aged between 40 and 70 years who were evaluated at a multi-centre lung function laboratory in Australia between 2014 and 2024.

Exploratory Factor Analysis of a Patient-Facing PCBH Adherence Measure: The PPAQ-Patient.

Model adherence indicates the degree to which a program or intervention is delivered as intended. In integrated primary care, where mental health services are embedded into primary care clinics, appraisal of model adherence provides insight into whether these services align with key features of this unique practice environment (e.g.

Scoping review of the role of social support in women Veterans' psychosocial and health outcomes.

Women veterans are a steadily growing population and have unique military experiences (e.g., report high rates of sexual harassment and assault) that are impactful across the lifespan.

The Use of Tranexamic Acid for Primary Prophylaxis of Heterotopic Ossification Following Total Hip Arthroplasty.

Background: Heterotopic ossification (HO) is a relatively common complication after total hip arthroplasty (THA) and can range from a radiographic observation only to severely disabling and requiring revision surgery. Prophylaxis is recommended for high-risk patients, though the ideal method and targeted population are open to debate. Tranexamic acid (TXA) is a medication increasingly being used to reduce blood loss associated with orthopaedic surgeries, including THA.

Peripheral-derived regulatory T cells contribute to tumor-mediated immune suppression in a nonredundant manner.

Identifying tumor-mediated mechanisms that impair immunity is instrumental for the design of new cancer therapies. Regulatory T cells (Tregs) are a key component of cancer-derived immune suppression; however, these lymphocytes are necessary to prevent systemic autoimmunity in mice and humans, and thus, direct targeting of Tregs is not a clinical option for cancer patients. We have previously demonstrated that excising transcription factor Kruppel-like factor 2 () within the T cell lineage blocks the generation of peripheral-derived Tregs (pTregs) without impairing production of thymic-derived Tregs.

Microscale Thermophoresis (MST) as a Tool to Study Binding Interactions of Oxygen-Sensitive Biohybrids.

Microscale thermophoresis (MST) is a technique used to measure the strength of molecular interactions. MST is a -based technique that monitors the change in fluorescence associated with the movement of fluorescent-labeled molecules in response to a temperature gradient triggered by an IR LASER. MST has advantages over other approaches for examining molecular interactions, such as isothermal titration calorimetry, nuclear magnetic resonance, biolayer interferometry, and surface plasmon resonance, requiring a small sample size that does not need to be immobilized and a high-sensitivity fluorescence detection.

Relationships among age, motivation, and exercise among women Veterans.

Physical activity (PA) and exercise are central to maintaining health, however research has shown steep declines in PA and exercise among women Veterans as they age. Though motivation may be an important contributor to initiating and sustaining exercise that may change across the lifespan, little is known about exercise motivation and its relation to age and exercise behavior among women Veterans. This cross-sectional study sought to describe exercise motivations, examine relationships among exercise motivations and age, and explore the degree to which age and motivation predict self-reported exercise behavior among women Veterans.

Same-Day Discharge Does Not Increase Resource Utilization Within One Year of Total Joint Arthroplasty.

Background: While the safety of rapid recovery total joint arthroplasty is well established, less is known about its impact on postoperative care utilization patterns. We wished to examine whether same-day discharge-and its associated presumed reduction in hospital-based postoperative care and education-translates to the need for more postoperative support during the 1-year recovery period.

Methods: A retrospective review of 1,237 total hip arthroplasty (THA) and 1,710 total knee arthroplasty (TKA) patients who had 0- or 1-day length of stay (LOS) from January 2020 to October 2023 was conducted.

Neutrophil Extracellular Traps and Respiratory Disease.

Extracellular traps made by neutrophils (NETs) and other leukocytes such as macrophages and eosinophils have a key role in the initial immune response to infection but are highly inflammatory and may contribute to tissue damage. They are particularly relevant to lung disease, with the pulmonary anatomy facilitating their ability to fully extend into the airways/alveolar space. There has been a rapid expansion in the number of published studies demonstrating their role in a variety of important respiratory diseases including chronic obstructive pulmonary disease, cystic fibrosis, bronchiectasis, asthma, pneumonia, COVID-19, rhinosinusitis, interstitial lung disease and lung cancer.

A Randomized Controlled Pilot Trial of Primary Care Treatment Integrating Motivation and Exposure Treatment (PC-TIME) in Veterans With PTSD and Harmful Alcohol Use.

Individuals with posttraumatic stress disorder (PTSD) often engage in harmful alcohol use. These co-occurring conditions are associated with negative health consequences and disability. PTSD and harmful drinking are typically experienced as closely related-thus treatments that target both simultaneously are preferred by patients.

Managing an epidemic within a pandemic: orthopedic opioid prescribing trends during COVID-19.

Introduction: In response to the opioid epidemic, a multitude of policy and clinical-guideline based interventions were launched to combat physician overprescribing. However, the sudden rise of the Covid-19 pandemic disrupted all aspects of healthcare delivery. The purpose of this study was to evaluate how opioid prescribing patterns changed during the Covid-19 pandemic within a large multispecialty orthopedic practice.

Properties of the iron-sulfur cluster electron transfer relay in an [FeFe]-hydrogenase that is tuned for H oxidation catalysis.

[FeFe]-hydrogenases catalyze the reversible oxidation of H from electrons and protons at an organometallic active site cofactor named the H-cluster. In addition to the H-cluster, most [FeFe]-hydrogenases possess accessory FeS cluster (F-cluster) relays that function in mediating electron transfer with catalysis. There is significant variation in the structural properties of F-cluster relays among the [FeFe]-hydrogenases; however, it is unknown how this variation relates to the electronic and thermodynamic properties, and thus the electron transfer properties, of enzymes.

The association between losartan potassium prescription and postoperative outcomes following total knee arthroplasty: A TriNetX analysis.

Background: Total knee arthroplasty (TKA) is a common surgical procedure performed to alleviate pain and improve functional outcomes in patients with knee osteoarthritis and rheumatoid arthritis who have failed conservative treatments. Arthrofibrosis has been extensively studied due to its negative impact on TKA outcomes. Losartan, an angiotensin receptor blocker (ARB), has the potential to improve TKA outcomes by inhibiting TGF-β and decreasing fibrosis.