Refugee caregivers: Associations between psychosocial wellbeing and parenting in Uganda.

Caregivers in humanitarian settings experience compounding stressors that may challenge their ability to provide quality parenting to children in their care. In recognition of this precarity, our analysis examines the linkage between psychosocial wellbeing and parenting behaviours among caregivers in Kiryandongo Settlement, Uganda. Using baseline data from an evaluation of a psychosocial intervention designed to support caregiver wellbeing and engage caregivers to support children in their communities, multi-variable ordinary least square regressions were used to estimate how various measures of psychosocial wellbeing (i.e. psychological distress, social support, and functioning) and parenting attitudes (related to violence against children) are associated with parental warmth and rejection. Profound livelihood challenges were found, as nearly half of the sample (48.20%) indicated cash from INGOs as their income source and/or reported never attending school (46.71%). Increased social support (coef. 0.11; 95% CIs: 0.08-0.15) and positive attitudes (coef. 0.21; 95% CIs: 0.14-0.29) were significantly associated with more desirable parental warmth/affection. Similarly, positive attitudes (coef. 0.16; 95% CIs 0.11-0.20), reduced distress (coef. 0.11; 95% CIs: 0.08-0.14) and increased functioning (coef. 0.03; 95% CIs: 0.01-0.04) were significantly associated with more desirable scores of parental undifferentiated rejection. While further research is needed to examine underlining mechanisms and causal pathways, our findings both link individual wellbeing characteristics with parenting behaviours and suggest further exploration into whether and how broader elements of the ecosystem may influence parenting outcomes.

Spectral and Electrochemical Properties of Common Photocatalysts in Water: A Compendium for Aqueous Photoredox Catalysis.

Electrochemical potentials of photocatalysts are solvent dependent. One of the largest discrepancies is observed when water is used in place of organic solvents as the reaction media. Unfortunately, the redox potentials for many photocatalysts in water have not been determined, at least under one unifying set of conditions, and this greatly hinders the rational design of sustainable and biocompatible photoredox reactions. Herein, we measure the spectral and electrochemical properties of the most common photoredox catalysts in water and catalog their absorption and fluorescence maxima and ground- and excited-state potentials.

Peptide Carbocycles: From -SS- to -CC- via a Late-Stage "Snip-and-Stitch".

One way to improve the therapeutic potential of peptides is through cyclization. This is commonly done using a disulfide bond between two cysteine residues in the peptide. However, disulfide bonds are susceptible to reductive cleavage, and this can deactivate the peptide and endanger endogenous proteins through covalent modification. Substituting disulfide bonds with more chemically robust carbon-based linkers has proven to be an effective strategy to better develop cyclic peptides as drugs, but finding the optimal carbon replacement is synthetically laborious. We report a new late-stage platform wherein a single disulfide bond in a cyclic peptide can serve as the progenitor for any number of new carbon-rich groups, derived from organodiiodides, using a Zn:Cu couple and a hydrosilane. We show that this platform can furnish entirely new carbocyclic scaffolds with enhanced permeability and structural integrity and that the stereochemistry of the new cycles can be biased by a judicious choice in silane.

Protocol for a caregiver psychosocial support intervention for populations affected by displacement in Uganda.

BACKGROUND: Child psychological distress in refugee settings is a significant public health concern, which is exacerbated by poor caregiver mental health and functioning. However, there are limited studies about effective interventions to improve caregiver mental health in support of child wellbeing. The objective of the current study is to evaluate the effectiveness and implementation of the Journey of Life (JoL) intervention to improve caregiver mental health in a refugee camp in Western Uganda. METHODS: A waitlist-control quasi-experimental design is being implemented in the Kiryandongo refugee settlement (intervention n = 600, control n = 600). Caregiver mental distress, measured using the Kessler-6, was selected as the primary outcome. Secondary outcomes include (a) functioning measured by the World Health Organization Disability Assessment Schedule, (b) social support measured by the Medical Outcomes Study Social Support Survey, and (c) caregiving behaviors according to the Parental Acceptance and Rejection Questionnaire and the Child Protection Index. The study aims to examine the implementation of the JoL intervention through qualitative assessments of intervention feasibility, adaptations, and reach. DISCUSSION: This trial will add much-needed evidence for the implementation of caregiver psychosocial programming within the humanitarian community. Findings will be disseminated amongst local, regional, and global actors in order to guide potential scale up within humanitarian settings. TRIAL REGISTRATION: Clinical Trials NCT04817098 (Registered: 3/24/21).

Combining semi-synthesis with plant and microbial biocatalysis: new frontiers in producing a chemical arsenal against cancer.

Natural products (NPs) that exhibit anticancer activities are frequently not potent enough to be used clinically as therapeutics. Semi-synthesis and metabolic engineering are promising approaches for producing more efficacious derivatives of anticancer NPs (ACNPs), but each technique alone can be inefficient at obtaining specific ACNP derivatives that may be suspected to have enhanced anticancer activity. Here, we demonstrate that the methods of semi-synthesis and biocatalysis can be used as modules in succession and in different combinations to produce 6,8-dibromogenkwanin, a derivative of the ACNP apigenin. Further, we demonstrated that soybean seed coats can be used as a biocatalyst to convert brominated flavonoids into multiple derivatives. A strength of the combinatorial (bio)synthesis approach was that the order of the modules could be rearranged to increase the yield of the desired product. At lower treatment concentration (5 µM), 6,8-dibromogenkwanin exhibited enhanced antiproliferative activities against HT-29 colorectal adenocarcinoma cancer cells under normoxic and hypoxic conditions compared to its ACNP precursors, but not at higher concentrations. Dose-response analyses suggested that dibromogenkwanin had a distinct mode-of-action compared to apigenin. Thus, this proof-of-concept paper demonstrates combinatorial (bio)synthesis as an approach that can be used to produce novel chemistries for anticancer research.