Protein-protein interaction-mediated regulation of lysine biosynthesis of Thermus thermophilus through the function-unknown protein LysV.

Thermus thermophilus biosynthesizes lysine via α-aminoadipate as an intermediate using the amino-group carrier protein, LysW, to transfer the attached α-aminoadipate and its derivatives to biosynthetic enzymes. A gene named lysV, which encodes a hypothetical protein similar to LysW, is present in the lysine biosynthetic gene cluster. Although the knockout of lysV did not affect lysine auxotrophy, lysV homologs are conserved in the lysine biosynthetic gene clusters of microorganisms belonging to the phylum Deinococcus-Thermus, suggesting a functional role for LysV in lysine biosynthesis. Pulldown assays and crosslinking experiments detected interactions between LysV and all of the biosynthetic enzymes requiring LysW for reactions, and the activities of most of all these enzymes were affected by LysV. These results suggest that LysV modulates the lysine biosynthesis through protein-protein interactions.

A systematic literature review of the relationship between parenting responses and child post-traumatic stress symptoms.

Background: Parents are a key source of support for children exposed to single-incident/acute traumas and can thereby play a potentially significant role in children's post-trauma psychological adjustment. However, the evidence base examining parental responses to child trauma and child posttraumatic stress symptoms (PTSS) has yielded mixed findings.Objective: We conducted a systematic review examining domains of parental responding in relation to child PTSS outcomes.Method: Studies were included if they (1) assessed children (6-19 years) exposed to a potentially traumatic event, (2) assessed parental responses to a child's trauma, and (3) quantitatively assessed the relationship between parental responses and child PTSS outcomes. A systematic search of three databases (APAPsycNet, PTSDpubs, and Web of Science) yielded 27 manuscripts.Results: Parental overprotection, trauma communication, avoidance of trauma discussion and of trauma reminders, and distraction were consistently related to child PTSS. There was more limited evidence of a role for trauma-related appraisals, harsh parenting, and positive parenting in influencing child outcomes. Significant limitations to the evidence base were identified, including limited longitudinal evidence, single informant bias and small effect sizes.Conclusion: We conclude that key domains of parental responses could be potential intervention targets, but further research must validate the relationship between these parental responses and child PTSS outcomes.

Child post-traumatic stress symptoms following acute trauma are consistently related to post-trauma parental overprotection, avoidance of trauma discussion and of trauma reminders, and promotion of distraction from trauma-related thoughts and stimuli.The findings from this review provide a potential rationale for targeting these parental domains in clinical interventions addressing children's post-traumatic stress symptoms.Future research is needed to validate the longitudinal relationship between parental response domains following children's traumatic exposure and child post-traumatic stress symptoms.

Systematic Review and Meta-analysis: Group-Based Interventions for Treating Posttraumatic Stress Symptoms in Children and Adolescents.

OBJECTIVE: Trauma exposure in childhood is common and can lead to a range of negative mental health outcomes, including posttraumatic stress disorder (PTSD). In many settings, resources to address this distress are scarce. Group-based interventions require minimal resources and training, can be delivered by non-mental health specialists, and target larger numbers of children and adolescents. This meta-analysis sought to establish whether such an approach is an effective method for targeting PTSD symptoms and to identify potential moderators of effectiveness. METHOD: PubMed, PsycNET, and PTSDPubs were searched for randomized controlled trials that used a group-based PTSD intervention with children and adolescents aged 6 to 18 years. Data were extracted for PTSD symptoms and depression symptoms. A random-effects meta-analysis was conducted to obtain between-group pooled effect size estimates. This study was registered on PROSPERO (CRD42020187214). RESULTS: The initial search identified 9,650 studies, of which 42 were eligible for inclusion (N = 5,998). Children randomized to a group-based intervention had significantly lower PTSD symptoms after treatment compared with a control group, with a medium pooled effect (g = -0.55, 95% CI [-0.76, -0.35]). Group interventions were superior when compared with either active or passive controls, at follow-up, and for depression symptoms. There was a large amount of heterogeneity, but no evidence that this was explained by whether the intervention was delivered in a low- and middle-income or high-income country, included caregivers, or was universal or targeted. CONCLUSION: Group PTSD interventions, particularly cognitive-behavioral therapy-based interventions, are effective at targeting posttrauma distress in children and adolescents. There was evidence of effectiveness when delivered in highly complex and resource-scarce settings and to a range of trauma-exposed groups, including groups exposed to war/conflict, natural disasters, and abuse.

"Crazy person is crazy person. It doesn't differentiate": an exploration into Somali views of mental health and access to healthcare in an established UK Somali community.

BACKGROUND: Mental health conditions have been shown to disproportionately affect those from Black, Asian and Minority Ethnic (BAME) communities. Somali communities globally have relatively high levels of mental illness, but low levels of mental health service use, with numerous barriers to care identified. This study was conducted in an established UK Somali community in the South West of England and aimed to explore community beliefs and views about the causes of mental illness, treatment for mental illness, and access to medical services in general. Participants were asked about how mental health and illness are understood and conceptualised, along with the cultural meaning of mental illness and its manifestations in relation to men, women and young people. DESIGN: Using a community-based participatory research design, in partnership with local Somali community organisations, the research team conducted four focus groups with a total of 23 participants aged over 18. Open-ended questions were used to facilitate discussion. Transcripts were analysed thematically. RESULTS: The participants discussed the role of migration and associated stress from the civil war and how that could contribute to mental illness. Participants tended to view the symptoms of mental illness as physical manifestations such as headaches and to describe a strong community stigma where those with mental health conditions were viewed as "crazy" by others. Barriers to accessing healthcare included language barriers, waiting times and a mistrust of doctors. Various ideas for improvements were discussed, including ideas to reduce stigma and ideas for community initiatives. CONCLUSION: Cultural considerations and reducing stigma are vital in improving understanding of mental illness and improving access to mental health services, along with building relationships and trust between the Somali community and health care workers.

How are behavioural interventions delivered to children (5-11 years old): a systematic mapping review.

CONTEXT: Behavioural interventions are used to prevent, manage and treat a wide variety of conditions including obesity, diabetes, chronic pain, asthma and emotional difficulties. There has been inadequate attention to the delivery of behavioural interventions to younger children (5-11 years old). OBJECTIVE: Our objectives were to describe the characteristics of behavioural interventions for children aged 5-11 years. DATA SOURCES: We searched five databases: CINAHL, EMBASE, PsycINFO, MEDLINE and Cochrane Library, from January 2005 to August 2019. STUDY SELECTION: The inclusion criteria were (1) children aged 5-11, (2) cognitive and/or behavioural interventions, (3) randomised controlled trials and (4) 2005 onward. Two researchers independently identified studies for inclusion. DATA EXTRACTION: Two researchers independently extracted data from eligible papers. RESULTS: The search identified 10 541 papers. We extracted information on 117 interventions (from 152 papers). Many of the interventions were categorised as complex. This was particularly true for clinical populations; 78.7% were delivered to both the child and parent, and 33.9% took place across multiple settings, typically health and school settings. Most (70.9%) were 'First Wave' (behavioural) interventions, and few (4.3%) were 'Third Wave' (characterised by metacognition, acceptance and mindfulness). Thirty-nine per cent used interactive techniques (play, arts, story and/or games). Purely digital and paper-based interventions were rare, but around a third used these tools as supplements to face-face delivery. There were differences in interventions for younger (5-7 years) and older (8-11 years) children. CONCLUSIONS: Interventions designed and delivered to children should be developmentally sensitive. This review highlights characteristics of interventions delivered to children 5-11 years old: the involvement of the child's parent, using behavioural (rather than cognitive) modalities, using interactive techniques and some interventions were delivered across multiple settings.

In vitro effect of 4-pentylphenol and 3-methyl-4-nitrophenol on murine splenic lymphocyte populations and cytokine/granzyme production.

Gasoline exhaust particles (GEP) and diesel exhaust particles (DEP) are considered to be some of the most important air pollutants. Among the many constituents in these pollutant particles, 4-pentylphenol (PP) and 3-methyl-4-nitrophenol (PNMC) are considered important phenolics in GEP and DEP, respectively. The aim of this study was to investigate the effect of in vitro exposure to commercially-supplied PP and PNMC on populations of, and production of interleukin (IL)-2, IL-4 and granzyme-B by, mouse splenic lymphocytes. After in vitro exposure to PP or PNMC for 48 h, splenocyte viability was measured, cell phenotypes, e.g. B-cell (CD19), T-cells (CD3), T-cell subsets (CD4 and CD8), were quantified by flow cytometry and production of IL-2, IL-4 and granzyme-B was assessed via ELISA. The oxidative toxicity of PP and PNMC toward the splenocytes was also evaluated using measures of hydroxyl radical and malondiadehyde production and changes in glutathione peroxidase and superoxide dismutase activities. Results showed that in vitro exposure to PP and PNMC inhibited splenic cell parameters in a dose-related manner. Exposure to PP and PNMC decreased splenic T-lymphocyte populations and splenocyte production of cytokines and granzyme B, as well as induced oxidative stress in the splenocytes. The results also showed that the percentages of CD3(+) T-cells overall and of CD4(+) and CD8(+) T-cells therein, among exposed splenocytes, were reduced; neither compound appeared to affect levels of CD19(+) B-cells. Overall, the suppressive effects of PP were stronger than PNMC. The data here provide support for the proposal that PP-/PNMC-induced toxicity in splenocytes may be due at least in part to oxidative damage and that PP and PNMC - as components of GEP and DEP - might significantly impact on splenic T-cell formation/release of cytokines/granzymes in situ.