Publications by authors named "Reck A"

Pruritus (i.e., the experience that evokes a desire to scratch) is an adaptive process that can become maladaptive, leading to a persistent scratch-itch cycle that potentiates pruritus and increases the risk of infection.

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Human dental follicle cells (DFCs) as multipotent stem cells are currently investigated within the field of regenerative medicine considering their potential for the regeneration of dental tissues, bone defects caused by periodontal or degenerative diseases and the treatment of craniofacial disorders. However, molecular mechanisms of the differentiation into mineralizing cells are still inadequately understood. Previous studies have shown that GÖ6976, an inhibitor of classical isoforms of protein kinase C (PKC), enhanced ostogenic differentiation of DFCs.

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Adolescent food insecurity is a salient adversity hypothesized to affect neural systems associated with increased impulsive behavior. Family environments shape how adverse experiences influence development. In this study, hypotheses were tested regarding the conjoint effects of food insecurity and family flexibility on impulsivity via alterations in connectivity between regions within the salience and central executive networks.

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Importance: Racial discrimination is a psychosocial stressor associated with youths' risk for psychiatric symptoms. Scarce data exist on the moderating role of amygdalar activation patterns among Black youths in the US.

Objective: To investigate the association between racial discrimination and risk for psychopathology moderated by neuroaffective processing.

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Background: Madelung's deformity is a congenital or acquired growth disorder of the forearm that can lead to significant impairments in the quality of life of affected patients. Various surgical treatment options for the condition have been described in the literature. This study aimed to investigate whether physiolysis with resection of the Vickers ligament can successfully halt the progression of the disease in a cohort of young patients, as would be expected based on existing literature on this topic.

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Background: Employing a developmental psychopathology framework, we tested the utility of the hormesis model in examining the strengthening of children and youth through limited levels of adversity in relation to internalizing and externalizing outcomes within a brain-by-development context.

Methods: Analyzing data from the Adolescent Brain and Cognitive Development study ( = 11,878), we formed latent factors of threat, deprivation, and unpredictability. We examined linear and nonlinear associations between adversity dimensions and youth psychopathology symptoms and how change of resting-state functional connectivity (rsFC) in the default mode network (DMN) from Time 1 to Time 5 moderates these associations.

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Objective: Emerging research and theory suggests that the internalization of racist ideas and attitudes, internalized racism, poses a significant threat to Black American adolescents' and increases their risk of externalizing symptomology. Prospective, empirical research linking internalized racism to externalizing symptoms among Black American adolescents and the mechanisms explaining this link is scarce. We hypothesize that internalized racism will forecast externalizing symptoms indirectly, via effects on poor self-regulation and depressive symptoms.

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Objective: Canine splenic hemangiosarcomas (HSA) are malignant mesenchymal tumors with a high tendency for metastasis. Median survival times after splenectomy followed by adjuvant chemotherapy usually range between 5 and 8 months. The aim of this prospective randomized double-blinded study was to examine the efficacy of a commercially available dendritic cell therapy (PetBioCell) following splenectomy.

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Importance: Racial discrimination undermines the mental health of Black adolescents. Preventive interventions that can attenuate the effects of exposure to racial discrimination are needed.

Objective: To investigate whether participation in the Strong African American Families (SAAF) program moderates Black adolescents' depressive symptoms associated with experience of racial discrimination.

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When research on osteogenic differentiation in dental follicle cells (DFCs) began, projects focused on bone morphogenetic protein (BMP) signaling. The BMP pathway induces the transcription factor DLX3, whichh in turn induces the BMP signaling pathway via a positive feedback mechanism. However, this BMP2/DLX3 signaling pathway only seems to support the early phase of osteogenic differentiation, since simultaneous induction of BMP2 or DLX3 does not further promote differentiation.

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Introduction: Exposure to childhood maltreatment may undermine the crucial developmental task of identity formation in adolescence, placing them at risk for developing negative affect. The current study investigated whether COVID-19-related stress intensified the indirect link between child maltreatment and adolescents' negative affect through identity confusion.

Method: Using multidimensional assessments of child maltreatment (threat vs.

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In this study, a range of miniaturized Ag/AgCl reference electrodes with various layouts were successfully fabricated on wafer-level silicon-based substrates with metallic intermediate layers by precisely controlling the electrochemical deposition of Ag, followed by electrochemical chlorination of the deposited Ag layer. The structure, as well as the chemical composition of the electrode, were characterized with SEM & EDS. The results showed that the chlorination is very sensitive to the applied electric field and background solution.

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Objective: Short telomeres and genomic DNA damage are causes of cellular senescence in dental follicle cells (DFCs).

Design: This study examined the role of the DNA damage response (DDR) during cellular senescence of DFCs by β-galactosidase activity and DNA damage by comet assay. Expression of genes/proteins was determined by Western Blots and reverse transcription-quantitative polymerase chain reaction, while glycolysis was enzymatically estimated.

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Introduction: The purpose of this study was the evaluation of surgical outcomes in a series of wrists with Madelung's deformity treated with radial corrective osteotomy. We hypothesize that this surgical technique is a suitable and safe way of treatment.

Materials And Methods: A retrospective review of patients with Madelung's deformity treated with radial corrective osteotomy between January 2001 and June 2017 at a single large department of hand surgery in Germany was performed.

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Dental Follicle Cells (DFCs) are somatic stem cells with a limited lifespan, but little is known about a possible mechanism of cellular senescence. Previous studies have shown that cellular senescence is associated with increased demand of glycolsis or the "glycolytic metabotype", which can be induced by activation of 5' adenosine monophosphate-activated protein kinase (AMPK), and decreased autophagy. This study examined the role of AMPK in inducing senescence in DFCs.

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Objective: The development of depressive symptoms often increases in adolescence, and for Black American youth, can result in disproportionately long-lasting and deleterious outcomes. Despite the epidemiological trend, scant research has examined the longitudinal development of heterogeneous patterns of depressive symptoms among Black American youth. Moreover, less is known on the impact of contextual covariates on depressive symptom trajectories among Black American youth.

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Delta-8-tetrahydrocannabinol (Δ-THC) is a psychotropic cannabinoid produced in low quantities in the cannabis plant. Refinements in production techniques, paired with the availability of inexpensive cannabidiol substrate, have resulted in Δ-THC being widely marketed as a quasi-legal, purportedly milder alternative to Δ-THC. Yet, little research has probed the behavioral and physiological effects of repeated Δ-THC use.

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Among Black American emerging adult men (∼aged 18-25), the early transition to fatherhood is often marred by numerous contextual stressors related to racial discrimination and socioeconomic instability. The strain of transitioning to fatherhood while experiencing high levels of contextual stress may evidence escalations in substance misuse over time as men may turn to substances to cope with the stress of complex life transitions. However, research examining these associations are scarce.

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Research on skin-deep resilience suggests that for youth and young adults from disadvantaged backgrounds, high levels of planful self-control may promote positive psychosocial outcomes while simultaneously conferring vulnerabilities to chronic diseases related to aging. In this study, we investigated the divergent effects of planful self-control on young Black American men's psychosocial well-being and their metabolic risk. We expected that high levels of planful self-control in emerging adulthood would predict positive outcomes in young adulthood (educational attainment, low depressive symptoms, job satisfaction); however, the combination of high levels of planful self-control and the experience of contextual adversity either in emerging adulthood or in childhood would forecast poor metabolic health.

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Decision-making is substantially altered after brain injuries. Patients and rats with brain injury are more likely to make suboptimal, and sometimes risky choices. Such changes in decision-making may arise from alterations in how sensitive individuals are to outcomes.

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Traumatic brain injury (TBI) impacts millions worldwide and can cause lasting psychiatric symptoms. Chronic neuroinflammation is a characteristic of post-injury pathology and is also associated with psychiatric conditions such as ADHD and bipolar disorder. Therefore, the current study sought to determine whether TBI-induced impulsivity and inattention could be treated using minocycline, an antibiotic with anti-inflammatory properties.

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Research reveals a linear association between prevention program dose and outcomes; that is, families receive the most benefits when they attend a sufficient number of program sessions. Ensuring participants receive an effective dose of prevention is a persistent challenge for the widespread implementation of family-centered prevention programs. We investigated factors associated with an effective dose of the Strong African American Families (SAAF) substance use prevention program.

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Purpose: Limited longitudinal research investigates the effects of family stress on the development of depressive symptoms among African-American adolescents. This study tests a developmental model of the family and intrapersonal processes linking family stress to depressive symptoms from the ages of 11 to 15 years. We hypothesized that family stress would predict increases in caregiver-youth conflict, which in turn would predict decreases in adolescents' self-control, a proximal predictor of increases in depressive symptoms.

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