Development of a Novel Hybprinter-SAM for Functionally Graded Tissue Engineering Constructs with Patterned and Localized Biochemical Signals.

Engineering native-mimetic tissue constructs is challenging due to their intricate biological and structural gradients. To address this, Hybprinter-SAM was developed by integrating three bioprinting technologies: syringe extrusion (SE), acoustic droplet ejection (ADE) and molten material extrusion (MME). This system not only enables the creation of mechanical gradients by integrating soft and rigid materials spanning 7 order magnitude of stiffness but also facilitates precise patterning and controlled localization of biochemical signals within printed scaffolds.

Simulating 500 million years of evolution with a language model.

More than 3 billion years of evolution have produced an image of biology encoded into the space of natural proteins. Here, we show that language models trained at scale on evolutionary data can generate functional proteins that are far away from known proteins. We present ESM3, a frontier multimodal generative language model that reasons over the sequence, structure, and function of proteins.

Developing National Information Systems to Monitor COVID-19 Vaccination: A Global Observational Study.

Background: Strong information systems are essential for safe and effective immunization programs. The COVID-19 vaccine rollout presented all immunization information systems (IIS) with challenging demands-requiring in-depth vaccine implementation data at all health system levels in real time. The system development approaches taken by countries were heterogeneous, with some countries opting to adapt existing systems and others implementing new ones.

Preoperative Velopharyngeal Closure Predicts Hypernasality Outcomes of Secondary Furlow Double-Opposing Z-Plasty.

Objective: To determine if preoperative velopharyngeal closure percentage (VCP) is predictive of successful Furlow double opposing Z-plasty (DOZP) and subsequently determine the optimal velopharyngeal closure cutoff for successful DOZP.

Design: Retrospective study.

Setting: Tertiary academic center.

Optimizing Tissue Engineering for Clinical Relevance in Rotator Cuff Repair.

Rotator cuff tear (RCT) is the most common cause of disability in the upper extremity. It results in 4.5 million physician visits in the United States every year and is the most common etiology of shoulder conditions evaluated by orthopedic surgeons.

Assessing a Digital Scorecard on Global Immunization Progress: Stakeholder Views and Implications for Enhancing Performance and Accountability.

Global health agencies and regional and national stakeholders collaborated to develop the Immunization Agenda 2030 Scorecard, a digital data visualization platform displaying global, regional, and country-level immunization progress. The scorecard serves to focus attention and enable strategic actions around the measures visualized. To assess the scorecard's usability, appropriateness, and context for use, we interviewed 15 immunization officers working across five global regions.

NTS-105 decreased cell death and preserved long-term potentiation in an in vitro model of moderate traumatic brain injury.

Traumatic brain injury (TBI) is a major cause of hospitalization and death. To mitigate these human costs, the search for effective drugs to treat TBI continues. In the current study, we evaluated the efficacy of the novel neurosteroid, NTS-105, to reduce post-traumatic pathobiology in an in vitro model of moderate TBI that utilizes an organotypic hippocampal slice culture.

Development and systematic characterization of GelMA/alginate/PEGDMA/xanthan gum hydrogel bioink system for extrusion bioprinting.

Gelatin methacryloyl (GelMA)/alginate-based hydrogels have shown great promise in bioprinting, but their printability is limited at room temperature. In this paper, we present our development of a room temperature printable hydrogel bioink by introducing polyethylene glycol dimethacrylate (PEGDMA) and xanthan gum into the GelMA/alginate system. The inclusion of PEGDMA facilitates tuning of the hydrogel's mechanical property, while xanthan gum improves the viscosity of the hydrogel system and allows easy extrusion at room temperature.

Hybprinting for musculoskeletal tissue engineering.

This review presents bioprinting methods, biomaterials, and printing strategies that may be used for composite tissue constructs for musculoskeletal applications. The printing methods discussed include those that are suitable for acellular and cellular components, and the biomaterials include soft and rigid components that are suitable for soft and/or hard tissues. We also present strategies that focus on the integration of cell-laden soft and acellular rigid components under a single printing platform.

A bioactive synthetic membrane improves bone healing in a preclinical nonunion model.

Objectives: High energy long bone fractures with critical bone loss are at risk for nonunion without strategic intervention. We hypothesize that a synthetic membrane implanted at a single stage improves bone healing in a preclinical nonunion model.

Methods: Using standard laboratory techniques, microspheres encapsulating bone morphogenic protein-2 (BMP2) or platelet derived growth factor (PDGF) were designed and coupled to a type 1 collagen sheet.

Mortality Benefit From the Passive Leg Raise Maneuver in Guiding Resuscitation of Septic Shock Patients: A Systematic Review and Meta-Analysis of Randomized Trials.

Background: Fluid therapy plays a major role in the management of critically ill patients. Yet assessment of intravascular volume in these patients is challenging. Different invasive and non-invasive methods have been used with variable results.

Changes in hospital admissions for urgent conditions during COVID-19 pandemic.

Objectives: To determine whether patients are deferring necessary care for urgent conditions during the coronavirus disease 2019 (COVID-19) pandemic and, if so, to what extent.

Study Design: Cross-sectional study.

Methods: Using billing data from 8 acute care hospitals, we identified 9 principal medical diagnoses from International Classification of Diseases, Tenth Revision codes across 4 medical specialties (cardiology, gastroenterology, neurology, and urology).

The Influence of Electron Beam Sterilization on In Vivo Degradation of β-TCP/PCL of Different Composite Ratios for Bone Tissue Engineering.

We evaluated the effect of electron beam (E-beam) sterilization (25 kGy, ISO 11137) on the degradation of β-tricalcium phosphate/polycaprolactone (β-TCP/PCL) composite filaments of various ratios (0:100, 20:80, 40:60, and 60:40 TCP:PCL by mass) in a rat subcutaneous model for 24 weeks. Volumes of the samples before implantation and after explantation were measured using micro-computed tomography (micro-CT). The filament volume changes before sacrifice were also measured using a live micro-CT.

Soft lithography fabrication of index-matched microfluidic devices for reducing artifacts in fluorescence and quantitative phase imaging.

Microfluidic devices are widely used for biomedical applications based on microscopy or other optical detection methods. However, the materials commonly used for microfabrication typically have a high refractive index relative to water, which can create artifacts at device edges and limit applicability to applications requiring high precision imaging or morphological feature detection. Here we present a soft lithography method to fabricate microfluidic devices out of MY133-V2000, a UV-curable, fluorinated polymer with low refractive index that is close to that of water ( = 1.

Is Safety in the Eye of the Beholder? Safeguards in Research With Adults With Intellectual Disability.

Human subjects research has a core commitment to participant well-being. This obligation is accentuated for once exploited populations such as adults with intellectual disability. Yet we know little about the public's views on appropriate safeguards for this population.

Stereotactic body radiotherapy in the treatment of pancreatic adenocarcinoma in elderly patients.

Background: Treatment of pancreatic adenocarcinoma in the elderly is often complicated by comorbidities that preclude surgery, chemotherapy and/or conventional external beam radiation therapy (EBRT). Stereotactic body radiotherapy (SBRT) has thus garnered interest in this setting.

Methods: A retrospective review of 26 patients of age ≥ 80 with pancreatic adenocarcinoma treated with definitive SBRT+/-chemotherapy from 2007-2011 was performed.

Contouring inguinal and femoral nodes; how much margin is needed around the vessels?

Purpose: To determine the optimal margin needed around the femoral vessels for appropriate inguinofemoral lymph node coverage and to propose guidelines defined by anatomic boundaries for clinical target volume delineation.

Methods And Materials: Twenty-two patients with pelvic malignancies and involved inguinal lymph nodes treated with conformal radiation therapy were selected. Lymph nodes were considered positive if they were pathologically malignant by biopsy, had 1(8)F-fluorodeoxyglucose avidity on positron emission tomography or measured ≥1.

Does after-hours discharge of ICU patients influence outcome?

Objective: To assess the frequency of after-hours discharges of patients from the intensive care unit and its effect on in-hospital mortality.

Design, Setting And Participants: Observational cohort study conducted in the ICU of Westmead Hospital, a tertiary care teaching hospital in Sydney. All adult patients admitted to the ICU between 1 January 2004 and 31 December 2006 were included in the study cohort.

Preoperative versus postoperative chemoradiotherapy in the trimodality management of esophageal cancer.

Chemoradiotherapy (CRT) is commonly employed in the management of esophageal carcinoma-either definitively or as part of a trimodality strategy with includes surgical resection. For patients treated with trimodality therapy, the most optimal sequence of chemoradiation (CRT) in relation to surgical resection is unclear. We reviewed the efficacy, advantages, and disadvantages of preoperative CRT versus postoperative CRT in esophageal cancer patients treated with trimodality therapy.

Brooke-Spiegler syndrome.

A 46-year-old woman with Brooke-Spiegler syndrome has multiple cutaneous adnexal neoplasms on her face and scalp. One of the lesions has concurrent features of cylindroma, trichoepithelioma, and spiradenoma in the same specimen. Etiology, clinical features, malignant transformation, and treatment modalities for Brooke-Spiegler syndrome are reviewed.

Keratosis follicularis (Darier-White disease), with an unusual palmoplantar keratoderma.

A 38-year-old woman presented with widespread, hyperkeratotic papules and plaques that had been present since childhood. Her mother, brother, and son have similar lesions. A diagnosis of keratosis follicularis was made, which has been treated with isotretinoin.

Biochemical disease-free survival rates following definitive low-dose-rate prostate brachytherapy with dose escalation to biologic target volumes identified with SPECT/CT capromab pendetide.

Purpose: To report biochemical disease-free survival (bDFS) after conformal brachytherapy with dose escalation to biological target volumes (BTVs) identified by Capromab Pendetide with single photon emission computed tomography and computed tomography image fusion (SPECT/CT).

Methods And Materials: Two hundred thirty-nine (T1c-T3b NxM0) consecutive patients were evaluated by SPECT/CT before treatment. Intraprostatic SPECT/CT BTVs were identified and targeted for 150% dose escalation during brachytherapy seed implant (SI).

Linear porokeratosis.

A 66-year-old man presented with linear lesions of 5-years duration on his right lower extremity along Blaschko's lines. Physical examination showed hyperpigmented and violaceous papules with hypopigmented centers that were surrounded by fine, raised hyperkeratototic rims. The lesions were characteristic of porokeratosis, and the diagnosis was confirmed by histopathological examination.

Sarcoidosis.

A 48-year-old woman with an 8-year history of intermittently pruritic papules on the lower extremities suddenly developed pruritus and generalized spread of the lesions over a 1-month period. The lesions appeared as smooth, flat-topped, violaceous, round papules on all extremities, trunk, and back. A biopsy specimen showed sarcoidosis.