4.Three-Dimensional Modeling of the Structural Microenvironment in Post-Traumatic War Wounds
Gregory T. CHRISTOPHERSON ; Jaira F. de VASCONCELLOS ; John C. DUNN ; Daniel W. GRIFFIN ; Patrick E. JONES ; Leon J. NESTI
Tissue Engineering and Regenerative Medicine 2021;18(6):963-973
BACKGROUND:
The development of post-traumatic heterotopic ossification (HO) is a common, undesirable sequela in patients with high-energy (war-related) extremity injuries. While inflammatory and osteoinductive signaling pathways are known to be involved in the development and progression of post-traumatic HO, features of the structural microenvironment within which the ectopic bone begins to form remain poorly understood. Thus, increasing our knowledge of molecular and structural changes within the healing wound may help elucidate the pathogenesis of post-traumatic HO and aid in the development of specific treatment and/or prevention strategies.
METHODS:
In this study, we performed high-resolution microscopy and biochemical analysis of tissues obtained from traumatic war wounds to characterize changes in the structural microenvironment. In addition, using an electrospinning approach, we modeled this microenvironment to reconstitute a three-dimensional type I collagen scaffold with non-woven, randomly oriented nanofibers where we evaluated the performance of primary mesenchymal progenitor cells.
RESULTS:
We found that traumatic war wounds are characterized by a disorganized, densely fibrotic collagen I matrix that influences progenitor cells adhesion, proliferation and osteogenic differentiation potential.
CONCLUSION
Altogether, these results suggest that the structural microenvironment present in traumatic war wounds has the potential to contribute to the development of post-traumatic HO. Our findings may support novel treatment strategies directed towards modifying the structural microenvironment after traumatic injury.
5.Factors influencing decision-making around opportunistic salpingectomy: a nationwide survey.
Miranda P STEENBEEK ; Laura A M VAN LIESHOUT ; Johanna W M AARTS ; Jurgen M J PIEK ; Sjors F P J COPPUS ; Leon F A G MASSUGER ; Rosella P M G HERMENS ; Joanne A DE HULLU
Journal of Gynecologic Oncology 2019;30(1):e2-
OBJECTIVE: To explore current practice and influencing factors on adoption of the opportunistic salpingectomy (OS), particularly regarding the decision making, to eventually enhance the development and implementation of clear guidelines. METHODS: This nationwide cross-sectional survey study was conducted in all hospitals in the Netherlands. An anonymous online survey was sent to gynecologists with special interest in gynecological oncology, gynecological endoscopy or urogynecology and all Dutch gynecology trainees. The survey mainly focused on current practice regarding OS and identification of influencing factors on the level of innovation, organization, healthcare professional and individual patient. RESULTS: The response rate was 348 out of 597 gynecologists (58.3%) and 142 out of 340 trainees (41.8%). Current practice of discussing and performing the OS varied widely, with ovarian cancer (OC) risk reduction as most important supportive factor on innovation level. Supportive factors on the level of organization and healthcare provider were; working in a non-training hospital, knowledge of current literature and extensive work experience (in years and annual number of hysterectomies). On individual patient level, a vaginal approach of hysterectomy, negative family history for OC and the presence of firm adhesions were suppressive factors for the OS. CONCLUSION: In this study we evaluated the current practice regarding the opportunistic salpingectomy in the Netherlands and identified influencing factors on different levels to raise awareness and attribute to development of a targeted implementation strategy, on both national and international level.
Anonyms and Pseudonyms
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Cross-Sectional Studies
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Decision Making
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Delivery of Health Care
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Endoscopy
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Gynecology
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Health Personnel
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Humans
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Hysterectomy
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Netherlands
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Ovarian Neoplasms
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Primary Prevention
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Risk Reduction Behavior
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Salpingectomy*