117 research outputs found
Early maladaptive schemas and borderline personality disorder features in a nonclinical sample : a network analysis
Borderline personality disorder (BPD) is a challenging problem. Early maladaptive schemas (EMSs) are considered as important vulnerability factors for the development and maintenance of BPD. Literature suggests a complex relationship between BPD and EMSs. The current study employed network analysis to model the complex associations between central BPD features (i.e., affective instability, identity problems, negative relations, and self-harm) and EMSs in 706 undergraduate students. The severity of BPD symptoms was assessed using the Personality Assessment Inventory-Borderline subscale; the Young Schema Questionnaire-Short Form was used to assess EMSs. Results suggest that specific EMSs show unique associations with different BPD features. Interestingly, affective instability showed no unique associations with EMSs. Identity problems were uniquely associated with abandonment, insufficient self-control, dependence/incompetence, and vulnerability to harm/illness schemas. Negative relations in BPD showed unique connections with mistrust/abuse and abandonment. Finally, BPD self-harm was connected to emotional deprivation and failure. These findings indicate potential pathways between EMSs and specific BPD features that could improve our understanding of BPD theoretically and clinically
Diagnosis of partially observed petri net based on analytical redundancy relationships
In this paper, we design an efficient diagnosis technique for partially observed discrete event systems modeled by labeled Petri nets. The fault detection is based on analytical redundancy relationships derived from the nominal model. The decomposition of the Tunâinduced subnet to connected subgraphs allows determining the subgraphs that may contain faults. To appreciate the fault localization, a set of analytical redundancy relationships is etablished for each fault transition based on the fault model. The proposed diagnosis approach is independent of the length of the observed sequence and independent of the number of unobservable transitions. The detected faults with the proposed approach are faults which led to a change in the number of tokens in the net
Invasive Techniques in Scar Management: Fat Injections
AbstractSince the end of the nineteenth century, fat grafting has become one of the most promising treatments for posttraumatic deformities and more in general for scars. Its easy application and collection have made it as the ideal therapy to restore volume and pliability, and contour and to prevent symptoms as pain. In these years the application method, the indications and the guidelines have been changed many times. In this chapter, we analyze why fat grafting is becoming so popular in the twentieth century and what is the scientific rational to use autologous adipose tissue. We will also discuss the current guidelines and the possible applications. At the end, we will also present some new fields such as the application of autologous fat grafting in the treatment of the hypertrophic scars and how we can try to improve its engraftment using external mechanical forces (the external negative pressure therapy) and/or the plasma-rich platelet (PRP)
Safety Concern between Autologous Fat Graft, Mesenchymal Stem Cell and Osteosarcoma Recurrence
Background: Osteosarcoma is the most common malignant primary bone tumour in young adult treated by neo adjuvant
chemotherapy, surgical tumor removal and adjuvant multidrug chemotherapy. For correction of soft tissue defect
consecutive to surgery and/or tumor treatment, autologous fat graft has been proposed in plastic and reconstructive
surgery.
Principal Findings: We report here a case of a late local recurrence of osteosarcoma which occurred 13 years after the initial
pathology and 18 months after a lipofilling procedure. Because such recurrence was highly unexpected, we investigated the
possible relationship of tumor growth with fat injections and with mesenchymal stem/stromal cell like cells which are
largely found in fatty tissue. Results obtained in osteosarcoma pre-clinical models show that fat grafts or progenitor cells
promoted tumor growth.
Significance: These observations and results raise the question of whether autologous fat grafting is a safe reconstructive
procedure in a known post neoplasic context
Commentary on: Low Negative Pressure Combined With Supertumescence Microliposuction as a New Method for Repairing Facial Fat Overfilling: A Case Series of 32 Patients
International audienceNo abstract availabl
Fat Graft Retention: Adipose Tissue, Adipose-derived Stem Cells and Aging
Over the past 30 years, there has been a dramatic increase in the use of autologous fat grafting for soft-tissue augmentation and to improve facial skin quality. Several studies have highlighted the impact of aging on adipose tissue, leading to a decrease of adipose tissue volume and preadipocytes proliferation and increase of fibrosis. Recently, there has been a rising interest in adipose tissue components, including Adipose-derived Stem/Stromal Cells (ASCs) due to their regenerative potential, including inflammation, fibrosis and vascularization modulation. Due to their differentiation potential and paracrine function, ASC has been largely used for fat grafting procedures as they are described to be a key component in fat graft survival. However, many parameters as surgical procedures of adipose tissue biology could change clinical outcomes. Variation on fat grafting methods lead to numerous inconsistent clinical outcomes. Donor-to-donor variation could also be imputed to ASCs, tissue inflammatory state or tissue origin. In this review, we aim to analyze (1) the parameters involved on the graft survival, and (2) the effect of aging on adipose tissue components, especially ASCs, that could lead to a decrease of skin regeneration and fat graft retention
Fat Graft Retention: Adipose Tissue, Adipose-derived Stem Cells and Aging
Over the past 30 years, there has been a dramatic increase in the use of autologous fat grafting for soft-tissue augmentation and to improve facial skin quality. Several studies have highlighted the impact of aging on adipose tissue, leading to a decrease of adipose tissue volume and preadipocytes proliferation and increase of fibrosis. Recently, there has been a rising interest in adipose tissue components, including Adipose-derived Stem/Stromal Cells (ASCs) due to their regenerative potential, including inflammation, fibrosis and vascularization modulation. Due to their differentiation potential and paracrine function, ASC has been largely used for fat grafting procedures as they are described to be a key component in fat graft survival. However, many parameters as surgical procedures of adipose tissue biology could change clinical outcomes. Variation on fat grafting methods lead to numerous inconsistent clinical outcomes. Donor-to-donor variation could also be imputed to ASCs, tissue inflammatory state or tissue origin. In this review, we aim to analyze (1) the parameters involved on the graft survival, and (2) the effect of aging on adipose tissue components, especially ASCs, that could lead to a decrease of skin regeneration and fat graft retention
Techniques of Concomitant Abdominoplasty and Umbilical Hernia Repair: A Review
International audienceBACKGROUND: Different methods of performing full abdominoplasty and umbilical hernia (UH) repair simultaneously have been proposed. OBJECTIVES: The aim of this study was to review and compare UH repair outcomes and umbilical stalk survival. METHODS: A literature research was performed through 28 December 2019. Other hernia repairs and mini-abdominoplasty (without umbilical transposition) were excluded. The primary outcomes analyzed were rates of UH recurrence, mesh infection, and umbilical necrosis. RESULTS: Six studies were included (5 retrospectives series, 1 case report). Hernia was repaired by an open approach (3 studies, 28 patients) or a laparoscopic approach (3 studies, 67 patients). UH repair consisted of mesh placement in the intraperitoneal or retromuscular/preperitoneal plane, or suture technique in the intraperitoneal plane. No hernia recurrence, mesh infection, or umbilical necrosis was described. CONCLUSIONS: Both open and laparoscopic approaches to simultaneous abdominoplasty and UH repair seem to be safe based on the rates of umbilical stalk vascularization, hernia recurrence, and mesh infection. However, more well-designed studies are needed to prove this hypothesis
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