Three-dimensional (3D) in vitro models of cell culture aim to fill the gap between the standard two-dimensional cell studies and the in vivo environment. Especially for neural tissue regeneration approaches where there is little regenerative capacity, these models are important for mimicking the extracellular matrix in providing support, allowing the natural flow of oxygen, nutrients, and growth factors, and possibly favoring neural cell regrowth. We have previously demonstrated that a new self-assembling nanostructured biomaterial, based on matrigel, was able to support adult neural stem cell (NSC) culture. In this study, we developed a new 3D cell culture system that takes advantage of the nano- and microfiber assembling process, under physiologic conditions, of these biomaterials. The assembled scaffold forms an intricate and biologically active matrix that displays specifically designed functional motifs: RGD (Arg-Gly-Asp), BMHP1 (bone marrow homing peptide 1), and BMHP2, for the culture of adult NSCs. These scaffolds were prepared at different concentrations, and microscopic examination of the cell-embedded scaffolds showed that NSCs are viable and they proliferate and differentiate within the nanostructured environment of the scaffold. Such a model has the potential to be tailored to develop ad hoc designed peptides for specific cell lines.

Background: Rats are a widely accepted preclinical model for evaluating intervertebral disc (IVD) degeneration and regeneration. IVD morphology is commonly assessed using histology, which forms the foundation for quantifying the state of IVD degeneration. IVD degeneration severity is evaluated using different grading systems that focus on distinct degenerative features. A standard grading system would facilitate more accurate comparison across laboratories and more robust comparisons of different models and interventions.Aims: This study aimed to develop a histology grading system to quantify IVD degeneration for different rat models.

According to the narrative approach, change in self-narratives is an important part of successful psychotherapy. In this view, several authors have highlighted the usefulness of narrating new experiences (like actions, thoughts, and stories) during therapy in contrast with maladaptive client self-narratives. These new experiences are termed here innovative moments (IMs), and different types can be specified: action, reflection, protest, reconceptualization, and performing change. With the aim of understanding which therapist skills are related to client IMs, we analyzed the association between exploration, insight, and action skills and IMs in two initial, two middle, and two final sessions of three good outcome (GO) and three poor outcome (PO) cases of emotion-focused therapy (EFT) for depression. IMs occurred more often in GO than PO cases. Furthermore, in GO more than PO cases, exploration and insight skills more often preceded action, reflection, and protest IMs in the initial and middle phases of EFT, but more often preceded reconceptualization and performing change IMs in the final phase. Action skills were more often associated with action, reflection, and protest IMs across all phases, especially in the final phase, of GO EFT.

Self-multiplicity is a widely recognized phenomenon within psychology. The study of how self-continuity emerges amidst self-multiplicity remains a crucial issue, however. Dialogical approaches are widely viewed as suitable for developing this field of study but they demand coherent methods compatible with their theoretical bases. After reviewing the available methods for the study of the dialogical self, as well as other dialogical methods for the study of psychotherapy, we conclude that we still lack a method which can be used by external observers and is devoted to the systematic tracing of the dialogical dynamics of self-positions as they unfold over time. A new method, positioning microanalysis, is described in detail as a possible way to overcome current limitations in methods focused on the dialogicality inherent in selfhood processes. Positioning microanalysis takes a genetic-developmental perspective on dialogical processes in the self and allows for the depiction of microgenetic movements of self-positions over time and the establishment of more or less stable sequences or patterns of positions. This is illustrated by its application to an emotion-focused therapy session.

Cell therapies for intervertebral disc (IVD) regeneration presently rely on transplantation of IVD cells or stem cells directly to the lesion site. Still, the harsh IVD environment, with low irrigation and high mechanical stress, challenges cell administration and survival. In this study, we addressed systemic transplantation of allogeneic bone marrow mesenchymal stem cells (MSCs) intravenously into a rat IVD lesion model, exploring tissue regeneration via cell signaling to the lesion site. MSC transplantation was performed 24 hours after injury, in parallel with dermal fibroblasts as a control; 2 weeks after transplantation, animals were killed. Disc height index and histological grading score indicated less degeneration for the MSC‐transplanted group, with no significant changes in extracellular matrix composition. Remarkably, MSC transplantation resulted in local downregulation of the hypoxia responsive GLUT‐1 and in significantly less herniation, with higher amounts of Pax5+ B lymphocytes and no alterations in CD68+ macrophages within the hernia. The systemic immune response was analyzed in the blood, draining lymph nodes, and spleen by flow cytometry and in the plasma by cytokine array. Results suggest an immunoregulatory effect in the MSC‐transplanted animals compared with control groups, with an increase in MHC class II+ and CD4+ cells, and also upregulation of the cytokines IL‐2, IL‐4, IL‐6, and IL‐10, and downregulation of the cytokines IL‐13 and TNF‐α. Overall, our results indicate a beneficial effect of systemically transplanted MSCs on in situ IVD regeneration and highlight the complex interplay between stromal cells and cells of the immune system in achieving successful tissue regeneration. Stem Cells Translational Medicine 2017;6:1029–1039

Aims: The Assimilation model argues that therapists should work responsively within the client's therapeutic zone of proximal development (TZPD). This study analyzed the association between the collaborative processes assessed by the Therapeutic Collaboration Coding System (TCCS) and advances in assimilation, as assessed by the Assimilation of Problematic Experiences Scale (APES).Method: Sessions 1, 4, 8, 12, and 16 of two contrasting cases, Julia and Afonso (pseudonyms), drawn from a clinical trial of 16-sessions emotion-focused therapy (EFT) for depression, were coded according to the APES and the TCCS. Julia met criteria for reliable and clinically significant improvement, whereas Afonso did not.Results: As expected, Julia advanced farther along the APES than did Afonso. Both therapists worked mainly within their client's TZPD. However, Julia's therapist used a balance of supporting and challenging interventions, whereas Afonso's therapist used mainly supporting interventions. Setbacks were common in both cases.

This commentary focuses on König's (2009) work as an opportunity to elaborate on selfhood as a dynamic and dialogical phenomenon. We depart from Bakhtinian dialogism and dialogical self theory to focus on the dynamics of selfhood processes and draw a more explicit theoretical link between the dialogical self and phenomenological experience. The interconnected dimensions of discontinuity and continuity in a multiple, multipositioned self are also elaborated. We defend that the construction of similitude in the self is permitted by selfregulation and self-organization processes that create recurring patterns in a moving self. Finally, the role that the introduction of difference and alterity can play in the promotion of change and development is also discussed.

Background: The rabbit lumbar spine is a commonly utilized model for studying intervertebral disc degeneration and for the pre-clinical evaluation of regenerative therapies. Histopathology is the foundation for which alterations to disc morphology and cellularity with degeneration, or following repair or treatment are assessed. Despite this, no standardized histology grading scale has yet been established for the spine field for any of the frequently utilized animal models. Aims:The purpose of this study was to establish a new standardized scoring system to assess disc degeneration and regeneration in the rabbit model. Materials and Methods:The scoring system was formulated following a review of the literature and a survey of spine researchers. Validation of the scoring system was carried out using images provided by 4 independent laboratories, which were graded by 12 independent graders of varying experience levels. Reliability testing was