It has been reported that pregnant women used more cosmetics daily than non-pregnant women. Phenoxyacetic acid is the main metabolite of phenoxyethanol, the most frequent preservative in cosmetics used in Europe, previously associated with reproductive effects (longer time to conception, endocrine disruptors in newborns and poorer verbal comprehension in children). In France, specialised platforms (PREVention ENvIronment Reproduction (PREVENIR)) in university hospital maternity wards are dedicated to evaluating environmental and occupational exposures in patients with pregnancy-related pathologies and supporting targeted prevention efforts. These platforms are composed of occupational health physicians, obstetrician-gynaecologists, midwives, occupational health nurses, and occupational health and environmental engineers. To assess the efficacy of these platforms, we developed a randomised clinical trial, the protocol for which is presented in this paper. The primary objective of the PREVENIR-G Study is to compare the change in urinary phenoxyacetic acid concentrations from baseline to 3 months postintervention between an intervention group and a control group. To date, the intervention has been integrated into routine care in certain facilities; however, its efficacy remains unproven. It is therefore essential to assess the relevance of this intervention, considering both its potential benefits and any adverse effects, such as increased stress or anxiety.
This study is an unblinded, randomised clinical superiority trial with two parallel groups (intervention vs no intervention) in four university maternity hospitals in France. We will include 300 pregnant women (aged 18 years or older) who are under 24 weeks of gestation (150 per group) referred to the participating PREVENIR platforms for management. The intervention will consist of clinical prevention management through the PREVENIR platforms, involving a consultation with an environmental health expert for an assessment of environmental and occupational exposures. During the consultation, targeted prevention messages will be provided based on identified exposures. The no intervention comparator will be a waiting-list control group. At the inclusion visit, patients will receive urine collection vials for samples to be collected at baseline and again at 3 months. Urine samples will be collected twice in a single day, on three separate days, during the collection week at home. In the week following the urine collection period, only participants in the intervention group will engage with the PREVENIR platforms. The primary outcome will be the difference in the urinary phenoxyacetic acid concentration between baseline and 3 months postintervention, compared between the intervention and control groups.
The study has been approved by the hospital ethics committee (CCP Ouest 2, no. 2023-A00941-44). All participants will provide written informed consent. Results will be shared through presentations and publications.
by Ricardo Rodríguez-Vargas, Francisca Villanueva-Flores, María Fernanda Gutiérrez-Chávez, Carlos Medrano-Villagómez, Andrés Zárate-Romero, Alejandro Huerta-Saquero
Acute lymphocytic leukemia (ALL) is characterized by the uncontrolled proliferation of lymphocyte precursor cells within the bone marrow, blood and extramedullary sites. L-asparaginase has become a standard treatment in childhood cases of ALL by reducing the asparagine levels in the bloodstream on which leukemic cells depend, as they cannot synthesize it. The reduction of asparagine leads to cell cycle arrest and death by apoptosis. However, due to the bacterial origin of L-asparaginase, it causes immunogenic reactions, and the cross-glutaminase activity that the enzyme exhibits cause ammonium accumulation and toxicity in different organs and tissues. Enzymes with a lower immunogenic profile that preserve their affinity for the substrate asparagine and that do not have glutaminase activity are needed, such as L-asparaginases from Streptomyces scabrisporus or Rhizobium etli. In this work, the L-asparaginases from S. scabrisporus and R. etli were purified and characterized, and the kinetic parameters of the enzymes were compared under physiological conditions. Furthermore, both enzymes reduced the viability of MOLT-4 leukemic cells in a time- and concentration-dependent manner.To describe diagnostic and management characteristics of acute rheumatic fever (ARF) among participants in the ‘Searching for a Technology-Driven Acute Rheumatic Fever Test’ study, in order to answer clinical questions and determine epidemiological and practice differences in different settings.
Multisite, prospective cohort study.
One hospital in northern Australia and two hospitals in New Zealand, 2018–2021.
143 episodes of definite, probable or possible ARF among 141 participants (median age 10 years, range 5–23; 98% Indigenous).
Participant characteristics, clinical, biochemical and echocardiographic data were explored using descriptive data. Associations with length of stay were determined using multivariable regression analysis.
ARF presentations were heterogeneous with the most common ARF ‘phenotype’ in 19% of cases being carditis with joint manifestations (polyarthritis, monarthritis or polyarthralgia), fever and PR prolongation. The total proportion of children with carditis was 61%. Australian compared with New Zealand participants more commonly had ARF recurrence (22% vs 0%), underlying RHD (48% vs 0%), possible/probable ARF (23% vs 9%) and were underweight (64% vs 16%). Erythrocyte sedimentation rate (ESR) provided an incremental diagnostic yield of 21% compared with C reactive protein. No instances of RHD were diagnosed among participants in New Zealand. Positive throat Group A Streptococcus culture was more common in New Zealand than in Australian participants (69% vs 3%). Children often required prolonged hospitalisation, with median hospital length-of-stay being 7 days (range 2–66). Significant predictors for length of stay in a multivariable regression model were valve disease (adjusted OR (aOR) 1.56, 95% CI 1.23 to 1.98, p
This study provides new knowledge on ARF characteristics and management and highlights international variation in diagnostic and management practice. Differing approaches need to be aligned. Meanwhile, locally specific information can help guide patient expectations after ARF diagnosis.
Chronic limb-threatening ischaemia (CLTI) represents a severe and debilitating condition characterised by inadequate blood supply to the extremities, leading to acute and persistent pain, ulceration and a heightened risk of limb loss. Patients with CLTI often experience chronic pain that significantly impairs their quality of life. The pain experienced by patients with CLTI can be complex and challenging to manage, requiring a refined approach to balance analgesic efficacy with potential adverse pharmacological effects and pre-existing, competing comorbidities. This systematic review protocol aims to explore, critically assess and compare the effectiveness and safety of different pharmacological and locoregional analgesic approaches for managing pain occurring secondary to CLTI.
The methods will be performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Five electronic databases will be searched. At least two reviewers will perform study screening, data extraction and quality assessments. Any disagreements will be arbitrated by an additional independent reviewer. Randomised studies, observational cohort studies and case series consisting of four or more patients will be included. Grey literature will be excluded. The primary outcome will be the effectiveness of analgesia. Secondary outcomes will include adverse effects of analgesia and functional outcomes. Where the data allow, appropriate quantitative synthesis methods will be pursued.
This systematic review will not involve primary data collection; thus, no ethical approval is required. The results will be disseminated in a peer-reviewed publication and presented at conferences.
CRD42024561800