Tissue decellularization has rapidly developed to be a practical approach in tissue engineering research; biological tissue is cleared of cells resulting in a protein-rich husk as a natural scaffold for growing transplanted cells as a donor organ therapy. Minimally processed, acellular extracellular matrix reproduces natural interactions with cells in vitro and for tissue engineering applications in animal models. There are many decellularization techniques that achieve preservation of molecular profile (proteins and sugars), microstructure features such as organization of ECM layers (interstitial matrix and basement membrane) and organ level macrofeatures (vasculature and tissue compartments). While structural and molecular cues receive attention, mechanical and material properties of decellularized tissues are not often discussed. The effects of decellularization on an organ depend on the tissue properties, clearing mechanism, chemical interactions, solubility, temperature, and treatment duration. Physical characterization by a few labs including work from the authors provides evidence that decellularization protocols should be tailored to specific research questions. Physical characterization beyond histology and immunohistochemistry of the decellularized matrix (dECM) extends evaluation of retained functional features of the original tissue. We direct our attention to current technologies that can be employed for structure function analysis of dECM using underutilized tools such as atomic force microscopy (AFM), cryogenic electron microscopy (cryo-EM), dynamic mechanical analysis (DMA), Fourier-transform infrared spectroscopy (FTIR), mass spectrometry, and rheometry. Structural imaging and mechanical functional testing combined with high-throughput molecular analyses opens a new approach for a deeper appreciation of how cellular behavior is influenced by the isolated microenvironment (specifically dECM). Additionally, the impact of these features with different decellularization techniques and generation of synthetic material scaffolds with desired attributes are informed. Ultimately, this mechanical profiling provides a new dimension to our understanding of decellularized matrix and its role in new applications.
Objective: The North American Skull Base Society (NASBS) multidisciplinary annual conference hosts skull base researchers from across the globe. We hypothesized that the work presented at the NASBS annual conference would reveal diverse authorship teams in terms of specialty and geography. Methods: In this retrospective review, abstracts presented at the NASBS annual meeting and subsequently published in the Journal of Neurological Surgery Part B: Skull Base between 01/01/2011 and 12/31/2020 were collected. Variables extracted included year, type of presentation, and author names and affiliations. Statistical analyses were performed with SPSS V23.0 with p-values < 0.05 considered significant. Geographic heat maps were created to assess author distribution, and a network analysis was performed to display authorship collaboration between geographic regions. <b>Results:</b> Of 3,312 published abstracts, 731 (22.1%) had an author with an affiliation outside of the United States. Fifty-seven distinct countries were represented. 324 abstracts (9.8%) had authorship teams representing at least 2 different countries. The top five USA states by abstract representation were Pennsylvania, California, New York, Ohio, and Minnesota. A majority of authors reported neurosurgery affiliations (56.7% first authors, 53.2% last authors), closely followed by otolaryngology (39.1% first authors, 41.5% last authors). No solo authors and very few (3.3%) of the first authors reported a departmental affiliation outside of otolaryngology or neurosurgery. <b>Conclusions:</b> Authors from many countries disseminate their work through poster and oral presentations at the NASBS annual meeting. 10% of abstracts were the product of international collaboration. Most authors were affiliated with a neurosurgery or otolaryngology department.
Many have referred to the coronavirus disease 2019 crisis and intertwined issues of structural racism as “twin pandemics”. As healthcare workers in Newark, New Jersey, a city heavily affected by the twin pandemics, we recognize that health workforce changes must be grounded in our community’s recent history. The objective of this essay is to briefly describe the relationship between organized medicine, state and local leaders, and the people of Newark. We begin with a discussion of Newark in the 1950s and 1960s: its people experienced poor socioeconomic conditions, terrible medical care, and the many sequelae of abhorrent racism. Plans to establish a New Jersey Medical School in Newark’s Central Ward also threatened to displace many residents from their homes. We then describe the Newark Agreements of 1968, which formalized a social contract between the state, business leaders, and people of Newark. In part, the Medical School committed to indefinitely promoting public health in Newark. We share progress towards this goal. Finally, we document key healthcare administrative decisions facing our community today. Stakeholder opinions are shared. We conclude that the Newark Agreements set an important standard for communities across the country. Creative solutions to healthcare policy may be realized through extensive community collaboration.
Objective: The North American Skull Base Society (NASBS) annual conference brings together skull base researchers from surgical and non-surgical fields. Our objective was to quantify the contributions of the authors by gender, who presented their work at NASBS and were subsequently published in the Journal of Neurological Surgery Part B: Skull Base. Methods: Oral and poster abstracts presented at the NASBS annual meeting from 01-01-2011 to 12-31-2020 were extracted from the Journal of Neurological Surgery Part B: Skull Base. The genderize.io web application programming interface (API) was utilized to determine authorship gender. A minority of first and last authors had departmental affiliations listed; a subgroup analysis was performed of these authors. Results: Female gender was assigned to 498 (17.8%) of the 2798 first authors and 269 (9.7%) of the 2762 last authors. Female authorship has consistently increased over the last decade. Representation was higher in otolaryngology (23.3% of first authors, 12.1% of last authors; p = 0.018) than neurosurgery (13.5% of first authors, 4.3% of last authors; p = 0.004). Female researchers were not less likely than their male counterparts to receive prestigious oral presentations. Of the 52 total countries represented, 20 (38.5%) had at least one female first author. Representation varied dramatically between countries. Conclusions: The NASBS’ efforts have undoubtedly contributed to these impressive strides toward gender parity. More work is needed to ensure that the best and the brightest, regardless of background, continue to contribute to skull base surgery research.
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