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Rice revitalization and food sovereignty in Sabah

Ong C, Wilson K

Agric Human Values, 2020 May 11.
PMID: 32395006 DOI: 10.1007/s10460-020-10082-0
Fulltext Hierarchical HZSM-5 for Catalytic Cracking of Oleic Acid to Biofuels

Arumugam M, Goh CK, Zainal Z, Triwahyono S, Lee AF, Wilson K, et al.

Nanomaterials (Basel), 2021 Mar 16;11(3).
PMID: 33809677 DOI: 10.3390/nano11030747

Solid acid catalyzed cracking of waste oil-derived fatty acids is an attractive route to hydrocarbon fuels. HZSM-5 is an effective acid catalyst for fatty acid cracking; however, its microporous nature is susceptible to rapid deactivation by coking. We report the synthesis and application of hierarchical HZSM-5 (h-HZSM-5) in which silanization of pre-crystallized zeolite seeds is employed to introduce mesoporosity during the aggregation of growing crystallites. The resulting h-HZSM-5 comprises a disordered array of fused 10-20 nm crystallites and mesopores with a mean diameter of 13 nm, which maintain the high surface area and acidity of a conventional HZSM-5. Mesopores increase the yield of diesel range hydrocarbons obtained from oleic acid deoxygenation from ~20% to 65%, attributed to improved acid site accessibility within the hierarchical network.
Fulltext Mapping Epitopes Recognised by Autoantibodies Shows Potential for the Diagnosis of High-Grade Serous Ovarian Cancer and Monitoring Response to Therapy for This Malignancy

Moody R, Wilson K, Kampan NC, McNally OM, Jobling TW, Jaworowski A, et al.

Cancers (Basel), 2021 Aug 20;13(16).
PMID: 34439354 DOI: 10.3390/cancers13164201

Autoantibodies recognising phosphorylated heat shock factor 1 (HSF1-PO4) protein are suggested as potential new diagnostic biomarkers for early-stage high-grade serous ovarian cancer (HGSOC). We predicted in silico B-cell epitopes in human and murine HSF1. Three epitope regions were synthesised as peptides. Circulating immunoglobulin A (cIgA) against the predicted peptide epitopes or HSF1-PO4 was measured using ELISA, across two small human clinical trials of HGSOC patients at diagnosis. To determine whether chemotherapy would promote changes in reactivity to either HSF1-PO4 or the HSF-1 peptide epitopes, IgA responses were further assessed in a sample of patients after a full cycle of chemotherapy. Anti-HSF1-PO4 responses correlated with antibody responses to the three selected epitope regions, regardless of phosphorylation, with substantial cross-recognition of the corresponding human and murine peptide epitope variants. Assessing reactivity to individual peptide epitopes, compared to HSF1-PO4, improved assay sensitivity. IgA responses to HSF1-PO4 further increased significantly post treatment, indicating that HSF1-PO4 is a target for immunity in response to chemotherapy. Although performed in a small cohort, these results offer potential insights into the interplay between autoimmunity and ovarian cancer and offer new peptide biomarkers for early-stage HGSOC diagnosis, to monitor responses to chemotherapy, and widely for pre-clinical HGSOC research.
Co-creating scholarship through collaborative writing in health professions education: AMEE Guide No. 143

Ramani S, McKimm J, Forrest K, Hays R, Bishop J, Thampy H, et al.

Med Teach, 2021 Nov 29.
PMID: 34843415 DOI: 10.1080/0142159X.2021.1993162

This AMEE guide provides a robust framework and practical strategies for health professions educators to enhance their writing skills and engage in successful scholarship within a collaborative writing team. Whether scholarly output involves peer-reviewed articles, book chapters, blogs and online posts, online educational resources, collaborative writing requires more than the usual core writing skills, it requires teamwork, leadership and followership, negotiation, and conflict resolution, mentoring and more. Whilst educators can attend workshops or courses to enhance their writing skills, there may be fewer opportunities to join a community of scholars and engage in successful collaborative writing. There is very little guidance on how to find, join, position oneself and contribute to a writing group. Once individuals join a group, further questions arise as to how to contribute, when and whom to ask for help, whether their contribution is significant, and how to move from the periphery to the centre of the group. The most important question of all is how to translate disparate ideas into a shared key message and articulate it clearly. In this guide, we describe the value of working within a collaborative writing group; reflect on principles that anchor the concept of writing as a team and guide team behaviours; suggest explicit strategies to overcome challenges and promote successful writing that contributes to and advances the field; and review challenges to starting, maintaining, and completing writing tasks. We approach writing through three lenses: that of the individual writer, the writing team, and the scholarly product, the ultimate goal being meaningful contributions to the field of Health Professions Education.
Fulltext The bidirectional temporal relationship between parenting stress and child maltreatment: A cross-lagged study based on intervention and cohort data

Han Q, Jocson R, Kunovski I, Raleva M, Juhari R, Okop K, et al.

J Affect Disord, 2024 Jun 01;354:302-308.
PMID: 38479502 DOI: 10.1016/j.jad.2024.03.063

BACKGROUND: Parenting stress has long been proposed as a major risk factor for child maltreatment. However, there is a lack of evidence from existing studies on the temporal sequence to establish a causal relationship. This study aims to examine bidirectional temporal relationships between parenting stress and child maltreatment.
METHODS: Longitudinal data from two different sources were analysed: a pre-post study of an online parenting programme conducted across six countries - the ePLH Evaluation Study, and a prospective cohort study in the United States - LONGSCAN. Cross-lagged panel model on parenting stress and child maltreatment was used in each dataset.
RESULTS: Based on repeatedly measured data of 484 caregivers in the ePLH study across five time points (every two weeks), we found that parenting stress at an earlier time point predicted later child maltreatment (IRR = 1.14, 95 % CI: 1.10,1.18). In addition, the occurrence of child maltreatment was associated with higher subsequent short-term parenting stress (IRR = 1.04, 95 % CI: 1.01,1.08) and thus could form a vicious circle. In the LONGSCAN analysis with 772 caregivers who were followed up from child age of 6 to child age of 16, we also found parenting stress at an earlier time point predicted later child maltreatment (β = 0.11, 95 % CI: 0.01,0.20), but did not observe an association between child maltreatment and subsequent long-term parenting stress.
LIMITATIONS: Potential information bias on the measurements.
CONCLUSIONS: This study provides evidence for a bidirectional temporal relationship between parenting stress and child maltreatment, which should be considered in parenting intervention programmes.
Fulltext Mapping age- and sex-specific HIV prevalence in adults in sub-Saharan Africa, 2000-2018

Haeuser E, Serfes AL, Cork MA, Yang M, Abbastabar H, Abhilash ES, et al.

BMC Med, 2022 Dec 19;20(1):488.
PMID: 36529768 DOI: 10.1186/s12916-022-02639-z

BACKGROUND: Human immunodeficiency virus and acquired immune deficiency syndrome (HIV/AIDS) is still among the leading causes of disease burden and mortality in sub-Saharan Africa (SSA), and the world is not on track to meet targets set for ending the epidemic by the Joint United Nations Programme on HIV/AIDS (UNAIDS) and the United Nations Sustainable Development Goals (SDGs). Precise HIV burden information is critical for effective geographic and epidemiological targeting of prevention and treatment interventions. Age- and sex-specific HIV prevalence estimates are widely available at the national level, and region-wide local estimates were recently published for adults overall. We add further dimensionality to previous analyses by estimating HIV prevalence at local scales, stratified into sex-specific 5-year age groups for adults ages 15-59 years across SSA.
METHODS: We analyzed data from 91 seroprevalence surveys and sentinel surveillance among antenatal care clinic (ANC) attendees using model-based geostatistical methods to produce estimates of HIV prevalence across 43 countries in SSA, from years 2000 to 2018, at a 5 × 5-km resolution and presented among second administrative level (typically districts or counties) units.
RESULTS: We found substantial variation in HIV prevalence across localities, ages, and sexes that have been masked in earlier analyses. Within-country variation in prevalence in 2018 was a median 3.5 times greater across ages and sexes, compared to for all adults combined. We note large within-district prevalence differences between age groups: for men, 50% of districts displayed at least a 14-fold difference between age groups with the highest and lowest prevalence, and at least a 9-fold difference for women. Prevalence trends also varied over time; between 2000 and 2018, 70% of all districts saw a reduction in prevalence greater than five percentage points in at least one sex and age group. Meanwhile, over 30% of all districts saw at least a five percentage point prevalence increase in one or more sex and age group.
CONCLUSIONS: As the HIV epidemic persists and evolves in SSA, geographic and demographic shifts in prevention and treatment efforts are necessary. These estimates offer epidemiologically informative detail to better guide more targeted interventions, vital for combating HIV in SSA.