Multivariate description of gait changes in a mouse model of peripheral nerve injury and trauma.

Objective: Animal models of nerve injury are important for studying nerve injury and repair, particularly for interventions that cannot be studied in humans. However, the vast majority of gait analysis in animals has been limited to univariate analysis even though gait data is highly multi-dimensional. As a result, little is known about how various spatiotemporal components of the gait relate to each other in the context of peripheral nerve injury and trauma.

The multifaceted helical net of amphipathic alpha-helices; the next dimension of the helical peptide wheel.

The amphipathic nature of helical proteins is crucial to their binding features across a broad spectrum of physiological examples, including heat-shock proteins and hyaluronic acid (HA) receptor binding. By taking advantage of the amphipathic balance of amino acids and their presentation in helical faces, novel synthetic peptides can be designed to improve biofunctionality. We present a new approach for designing synthetic alpha helical peptides using a multifaceted analysis, which allows for new bioengineering designs of amphipathic alpha helices.

Peptide discovery across the spectrum of neuroinflammation; microglia and astrocyte phenotypical targeting, mediation, and mechanistic understanding.

Uncontrolled and chronic inflammatory states in the Central Nervous System (CNS) are the hallmark of neurodegenerative pathology and every injury or stroke-related insult. The key mediators of these neuroinflammatory states are glial cells known as microglia, the resident immune cell at the core of the inflammatory event, and astroglia, which encapsulate inflammatory insults in proteoglycan-rich scar tissue. Since the majority of neuroinflammation is exclusively based on the responses of said glia, their phenotypes have been identified to be on an inflammatory spectrum encompassing developmental, homeostatic, and reparative behaviors as opposed to their ability to affect devastating cell death cascades and scar tissue formation.

Glia in tissue engineering: From biomaterial tools to transplantation.

Glia are imperative in nearly every function of the nervous system, including neurotransmission, neuronal repair, development, immunity, and myelination. Recently, the reparative roles of glia in the central and peripheral nervous systems have been elucidated, suggesting a tremendous potential for these cells as novel treatments to central nervous system disorders. Glial cells often behave as 'double-edged swords' in neuroinflammation, ultimately deciding the life or death of resident cells.

Effect of zoledronic acid and pamidronate on renal function.

Background: There is limited data on the effect bisphosphonates have on renal function and the use of bisphosphonates in patients with baseline renal dysfunction.

Objective: The purpose of this study was to determine the incidence of acute kidney injury (AKI) in patients after receiving zoledronic acid or pamidronate.

Methods: A retrospective cohort analysis was conducted of patients who received one dose of a bisphosphonate, either zoledronic acid or pamidronate.

Blocking antibodies against integrin-α3, -αM, and -αMβ2 de-differentiate myofibroblasts, and improve lung fibrosis and kidney fibrosis.

Fibrosis is involved in 45% of deaths in the United States, and no treatment exists to reverse the progression of lung or kidney fibrosis. Myofibroblasts are key to the progression and maintenance of fibrosis. We investigated features of cell adhesion necessary for monocytes to differentiate into myofibroblasts, seeking to identify pathways key to myofibroblast differentiation.

Disparities in polysomnography referral in a high-risk cardiac population.

Purpose: Obstructive sleep apnea (OSA) is associated with metabolic, cardiovascular, and cerebrovascular comorbidities. Appropriate diagnosis and treatment of OSA might mitigate these comorbidities. This retrospective review sought to assess the impact of sex, age, race, ethnicity, and insurance status on polysomnography (PSG) referral rates.

A class of peptides designed to replicate and enhance the Receptor for Hyaluronic Acid Mediated Motility binding domain.

The extra-cellular matrix (ECM) is a complex and rich microenvironment that is exposed and over-expressed across several injury or disease pathologies. Biomaterial therapeutics are often enriched with peptide binders to target the ECM with greater specificity. Hyaluronic acid (HA) is a major component of the ECM, yet to date, few HA adherent peptides have been discovered.

Toward discovering a novel family of peptides targeting neuroinflammatory states of brain microglia and astrocytes.

Microglia are immune-derived cells critical to the development and healthy function of the brain and spinal cord, yet are implicated in the active pathology of many neuropsychiatric disorders. A range of functional phenotypes associated with the healthy brain or disease states has been suggested from in vivo work and were modeled in vitro as surveying, reactive, and primed sub-types of primary rat microglia and mixed microglia/astrocytes. It was hypothesized that the biomolecular profile of these cells undergoes a phenotypical change as well, and these functional phenotypes were explored for potential novel peptide binders using a custom 7 amino acid-presenting M13 phage library (SX7) to identify unique peptides that bind differentially to these respective cell types.

Perceived neighbourhood collective efficacy and adolescent health determinants: Investigating outdoor play as a mediator.

Purpose: Research demonstrates that play is promotive of health and development in children across multiple domains. Outdoor play may be especially beneficial as environmental elements are conducive to recreation and relaxation. Maternal perception of neighbourhood collective efficacy (NCE), or sense of cohesion among residents, may be a form of social capital especially effective in promoting outdoor play, and thus healthy development.

The protective role of parental vigilance in the link between risky childhood environments and health.

Growing up in a risky environment is associated with poor lifespan physical and mental health. However, promotive factors that have protective or compensatory effects (i.e.

Autophagy Enhances Longevity of Induced Pluripotent Stem Cell-Derived Endothelium via mTOR-Independent ULK1 Kinase.

Stem cells are enabling an improved understanding of the peripheral arterial disease, and patient-specific stem cell-derived endothelial cells (ECs) present major advantages as a therapeutic modality. However, applications of patient-specific induced pluripotent stem cell (iPSC)-derived ECs are limited by rapid loss of mature cellular function in culture. We hypothesized that changes in autophagy impact the phenotype and cellular proliferation of iPSC-ECs.

Social integration buffers the impact of financial distress on coparenting.

The authors of this study examined how families may pull upon their shared social networks to generate positive relationship dynamics in the midst of financial distress. Prior research regarding the relevance of social integration to the associations between financial distress and the coparenting relationship have produced mixed and limited results. This study explores how each partner's belief that the couple is integrated within a supportive social network interacts with the strain of financial hardship to influence the coparenting relationship.

Perioperative Topical Antisepsis and Surgical Site Infection in Patients Undergoing Upper Aerodigestive Tract Reconstruction.

Importance: Surgical site infections (SSIs) after vascularized reconstruction of the upper aerodigestive tract (UADT) are associated with considerable morbidity. The association between perioperative prophylaxis practices, particularly topical antisepsis, and SSIs remains uncertain.

Objective: To assess the association between perioperative topical antisepsis and SSIs in patients undergoing vascularized reconstruction of the UADT.

The influence of family cohesion on self-regulation and anxiety problems among African American emerging adults.

Although African Americans have lower rates of anxiety in childhood than other racial and ethnic minority groups, they seem to experience escalating rates during emerging adulthood. Despite this, few studies have examined factors associated with anxiety during emerging adulthood among African American populations. The current study investigated the extent to which late adolescent family relationships affect anxiety problems among African American emerging adults.

Recombinant activated factor VII for hemostasis in patients undergoing complex ascending aortic surgery: A single-center, single-surgeon retrospective analysis.

Background: Use of recombinant activated factor VII (rFVIIa) to achieve hemostasis during cardiac surgery continues to be debated, as support for its efficacy and safety has not been consistent. We examined our experience with rFVIIa for achieving hemostasis in high-risk patients undergoing complex ascending aortic surgery.

Methods: We reviewed patients who underwent complex ascending aortic surgery performed by a single surgeon (C.

Demographic and developmental patterns in telomere length across adolescence.

Telomere length is often used in studies of adults as a biomarker of cellular aging and an indicator of stress exposure. However, we know little about how telomeres change over time, particularly over the course of the important developmental period of adolescence. We use data on telomere length collected at two points in time spanning adolescence (Years 9 and 15) from the Fragile Families and Child Wellbeing Study to examine longitudinal patterns ( = 1,654) in telomere length.

Impact of paternal education on epigenetic ageing in adolescence and mid-adulthood: a multi-cohort study in the USA and Mexico.

Background: Both parental and neighbourhood socio-economic status (SES) are linked to poorer health independently of personal SES measures, but the biological mechanisms are unclear. Our objective was to examine these influences via epigenetic age acceleration (EAA)-the discrepancy between chronological and epigenetic ages.

Methods: We examined three USA-based [Coronary Artery Risk Disease in Adults (CARDIA) study, Fragile Families and Child Wellbeing Study (FFCWS) and Programming Research in Obesity, Growth, Environment and Social Stressors (PROGRESS)] and one Mexico-based (Project Viva) cohort.

Postural control may drive the development of other domains in infancy.

Background: To examine differences in sitting posture in infants at low- and high-risk for autism spectrum disorder and to establish the relationship between sitting postural control and other developmental domains.

Methods: A total of 19 infants participated in the study. Eight infants at high-risk and 11 infants at low-risk for autism spectrum disorder.

Taking the Next Step: a Neural Coaptation Orthotopic Hind Limb Transplant Model to Maximize Functional Recovery in Rat.

Limb transplant in particular and vascularized composite allotransplant (VCA) in general have wide therapeutic promise that have been stymied by current limitations in immunosuppression and functional neuromotor recovery. Many animal models have been developed for studying unique features of VCA, but here we present a robust reproducible model of orthotopic hind limb transplant in rats designed to simultaneously investigate both aspects of current VCA limitation: immunosuppression strategies and functional neuromotor recovery. At the core of the model rests a commitment to meticulous, time-tested microsurgical techniques such as hand sewn vascular anastomoses and hand sewn neural coaptation of the femoral nerve and the sciatic nerve.

Firm parenting and youth adjustment: Stress reactivity and dyadic synchrony of respiratory sinus arrhythmia.

Parental behaviors are potent risk and protective factors for youth development of externalizing problems. Firm control is a parenting strategy that is inconsistently linked to youth adjustment, possibly due to variations in individual biological contexts. Growing research shows that dyadic coregulation of the autonomic nervous system (e.

Early Puberty and Telomere Length in Preadolescent Girls and Mothers.

Objective: To test the association between early puberty and telomere length in preadolescent girls and mothers from a large representative sample of US females.

Study Design: We analyzed data from 1194 preadolescent girls and 2421 mothers from the Fragile Families and Child Wellbeing Study. Participants were from a population-based birth cohort (1998-2000) born in large US cities.

Cortisol and Parenting Predict Pathways to Disinhibited Social Engagement and Social Functioning in Previously Institutionalized Children.

Previously institutionalized children on average show persistent deficits in physiological and behavioral regulation, as well as a lack of normative reticence towards strangers, or disinhibited social engagement (DSE). Post-adoption parenting, specifically a combination of supportive presence and structure/limit-setting, may protect against DSE over time via better adrenocortical functioning. This study examined the impact of adrenocortical activity and post-adoption parenting on DSE across the first two years post-adoption (age at adoption: 16-36 months) and observed kindergarten social outcomes in previously institutionalized children (n = 94) compared to non-adopted children (n = 52).