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Bacteria isolated from the grape phyllosphere capable of degrading guaiacol, a main volatile phenol associated with smoke taint in wine

by Claudia Castro, Jacquelyn Badillo, Melissa Tumen-Velasquez, Adam M. Guss, Thomas S. Collins, Frank Harmon, Devin Coleman-Derr

Recent wildfires near vineyards in the Pacific United States have caused devastating financial losses due to smoke taint in wine. When wine grapes (Vitis vinifera) are exposed to wildfire smoke, their berries absorb volatile phenols derived from the lignin of burning plant material. Volatile phenols are released during the winemaking process giving the finished wine an unpleasant, smokey, and ashy taste known as smoke taint. Bacteria are capable of undergoing a wide variety of metabolic processes and therefore present great potential for bioremediation applications in many industries. In this study, we identify two strains of the same species that colonize the grape phyllosphere and are able to degrade guaiacol, a main volatile phenol responsible for smoke taint in wine. We identify the suite of genes that enable guaiacol degradation in Gordonia alkanivorans via RNAseq of cells growing on guaiacol as a sole carbon source. Additionally, we knockout guaA, a cytochrome P450 gene involved in the conversion of guaiacol to catechol; ΔguaA cells cannot catabolize guaiacol in vitro, providing evidence that GuaA is necessary for this process. Furthermore, we analyze the microbiome of berries and leaves exposed to smoke in the vineyard to investigate the impact of smoke on the grape microbial community. We found smoke has a significant but small effect on the microbial community, leading to an enrichment of several genera belonging to the Bacilli class. Collectively, this research shows that studying microbes and their enzymes has the potential to identify novel tools for alleviating smoke taint.

The impact of wildfires on the diet of <i>Podarcis lusitanicus</i> revealed by DNA metabarcoding

by Catarina Simões, Diana S. Vasconcelos, Raquel Xavier, Xavier Santos, Catarina Rato, D. James Harris

Fire has long been recognized as an important ecological and evolutionary force in plant communities, but its influence on vertebrate community ecology, particularly regarding predator-prey interactions, remains understudied. This study reveals the impact of wildfires on the diet of Podarcis lusitanicus, a lizard species inhabiting a fire-prone region in the Iberian Peninsula. In order to explore diet variability associated with different local burn histories, we evaluated P. lusitanicus diet across three types of sites in Northern Portugal: those had not burned since 2016, those burned in 2016, and those more recently burned in 2022. Podarcis lusitanicus is a generalist arthropod predator with dietary flexibility. Given the turnover of arthropod species after fire, it is expected to find variations in diet caused by different fire histories, especially between unburned and recently burned sites. From DNA metabarcoding of faecal samples, our study revealed that while prey richness remained unaffected by wildfire regime, significant shifts occurred in diet composition between more recently burned and unburned areas. Specifically, we found that differences in diet composition between these two fire regimes were due to the presence of Tapinoma ants and jumping spiders (Salticus scenicus). These prey were present in the diets of lizards occupying unburned areas, while these were absent in areas burned in 2022. Interestingly, diets in unburned areas and areas burned in 2016 showed no significant differences, highlighting the lizards’ ecological flexibility and the habitat’s resilience over time. The ant species T. topitotum was found in dominance in both burned areas, suggesting that this species may be fire tolerant. In addition, families such as Cicadellidae and Noctuidae were found to be more associated with more recently burned areas. The use of DNA metabarcoding in this study was essential to provide a more detailed and accurate view of predator-prey interactions in ecosystems susceptible to fire, and therefore a better understanding of changes in prey consumption in this fire-adapted ecosystem.

Occurrence of advance care planning for persons with dementia, cancer and other chronic-progressive diseases in general practice: longitudinal analysis of data from health records linked with administrative data

Por: Hommel · D. · Azizi · B. · Visser · M. · Bolt · S. R. · Blom · J. W. · Janssen · D. J. A. · van Hout · H. P. J. · Francke · A. L. · Verheij · R. A. · Joling · K. J. · van der Steen · J. T.
Objectives

There are substantial barriers to initiate advance care planning (ACP) for persons with chronic-progressive disease in primary care settings. Some challenges may be disease-specific, such as communicating in case of cognitive impairment. This study assessed and compared the initiation of ACP in primary care with persons with dementia, Parkinson’s disease, cancer, organ failure and stroke.

Design

Longitudinal study linking data from a database of Dutch general practices’ electronic health records with national administrative databases managed by Statistics Netherlands.

Setting and participants

Data from general practice records of 199 034 community-dwelling persons with chronic-progressive disease diagnosed between 2008 and 2016.

Outcome measure

Incidence rate ratio (IRR) of recorded ACP planning conversations per 1000 person-years in persons with a diagnosis of dementia, Parkinson’s disease, organ failure, cancer or stroke, compared with persons without the particular diagnosis. Poisson regression and competing risk analysis were performed, adjusted for age, gender, migration background, living situation, frailty index and income, also for disease subsamples.

Results

In adjusted analyses, the rate of first ACP conversation for persons with organ failure was the lowest (IRR 0.70 (95% CI 0.68 to 0.73)). Persons with cancer had the highest rate (IRR 1.75 (95% CI 1.68 to 1.83)). Within the subsample of persons with organ failure, the subsample of persons with dementia and the subsample of stroke, a comorbid diagnosis of cancer increased the probability of ACP. Further, for those with organ failure or cancer, comorbid dementia decreased the probability of ACP.

Conclusions

Considering the complexity of initiating ACP for persons with organ failure or dementia, general practitioners should prioritise offering it to them and their family caregivers. Policy initiatives should stimulate the implementation of ACP for people with chronic-progressive disease.

Investigation of prophylactic clip haemorrhage control for colorectal cold snare polypectomy in patients taking antithrombotic drugs (PERCOLD): study protocol--a multicentre prospective parallel-group non-inferiority RCT phase 3 trial

Por: Okimoto · K. · Matsumura · T. · Taida · T. · Ishikawa · T. · Koshibu · Y. · Shu · N. · Ozeki · Y. · Furuya · M. · Mamiya · Y. · Nakazawa · H. · Ohyama · Y. · Takahashi · S. · Horio · R. · Goto · C. · Kurosugi · A. · Sonoda · M. · Kaneko · T. · Ohta · Y. · Matsusaka · K. · Inaba · Y. · Kato · J.
Introduction

The effect of prophylactic clipping for colorectal cold snare polypectomy (CSP) on delayed bleeding (DB) in patients with antithrombotic drugs remains unverified. The aim of the PERCOLD study is to demonstrate the non-inferiority of DB rates in cases without prophylactic clips compared with cases with prophylactic clips in patients taking antithrombotic drugs for colorectal CSP through randomised controlled trial (RCT).

Methods and analysis

This study is a multicentre prospective parallel-group RCT phase 3 trial that is being conducted at 14 institutions in Japan at the time of writing this manuscript. After providing consent, patients will undergo screening and assessment for study enrolment eligibility. Patients taking antithrombotic drugs (aged 20 years or older at the time of consent and who have agreed to participate in this study) will be selected if they have a preoperative suspected adenoma (including sessile serrated lesion) with an endoscopic diameter of

Ethics and dissemination

The trial protocol has been approved by the Chiba University Certified Clinical Research Reviewer Board (CRB3180015), which serves as the central ethics committee, and registered with Japan Registry of Clinical Trials. The current protocol V.1.7, dated 4 October 2024. Written informed consent for participation in the study will be obtained from all participating patients. All participating institutions have formally agreed to conduct the study in accordance with this central approval, and local site permissions were obtained as required by each institution. The results of this study will be submitted for publication in international peer-reviewed journals and the key findings will be presented at international scientific conferences.

Trial registration number

Japan Registry of Clinical Trials (jRCT1032230086).

Barriers and enablers to healthcare access for older adults in Cambodia: perspectives of healthcare professionals - a qualitative study

Por: Maung · K. T. · Phou · S. · Hunsberger · M. · Santosa · A. · Ng · N. · Sopheab · H. · Chhea · C. · Eriksson · M.
Objective

To explore health professionals’ perspectives on the barriers and enablers of healthcare access for older adults in Cambodia.

Design

A qualitative study based on semi-structured interviews conducted in Khmer, recorded, transcribed, translated into English and analysed using an abductive thematic analysis approach.

Setting

Phnom Penh, Cambodia.

Participants

A purposive sample of 11 health professionals serving in diverse roles and sectors participated in the study.

Results

Three key barriers emerged: (1) institutional barriers, (2) patient-specific access barriers and (3) communication barriers. However, four key enablers were also identified: (1) supportive healthcare environment, (2) reaching out to improve access to health services, (3) peer and community engagement and (4) government direct support to access healthcare. Despite previous policy efforts, gaps in the implementation of healthcare services for older adults persist across all health facilities. Health professionals identified that improving healthcare access for older adults in Cambodia requires a multifaceted strategy involving proactive outreach, health promotion, financial assistance and stronger community and family support.

Conclusion

Effective policy implementation requires collaboration among stakeholders and the active involvement of older adults in programme design to enhance dignity and well-being in Cambodia’s ageing population.

Efficacy of a mobile app-based intervention to improve eating behaviours and lifestyle in infants of mothers with metabolic risk factors: study protocol of a randomised controlled trial

Por: Chan · D. · Leong · K. · Ong · C. · Ku · C. W. · Chan · J. K. Y. · Chua · M. C. · Yap · F. · Loy · S. L.
Introduction

Childhood obesity has surged globally, leading to various metabolic comorbidities and increased cardiovascular risks. Early intervention in lifestyle and feeding practices during infancy is crucial to mitigate these risks. This study evaluates the efficacy of a mobile web app-based intervention tool, named the Feeding, Lifestyle, Activity Goals (FLAGs) to promote healthier eating behaviours and lifestyle habits in infants from birth to 12 months.

Methods and analysis

This two-arm randomised controlled trial will enrol 220 caregiver-infant pairs per arm at KK Women’s and Children’s Hospital, Singapore, with recruitment expected from January to December 2025. Eligible participants include women at ≥34 weeks’ gestation or up to 3 days post delivery with pre-pregnancy overweight/obesity (body mass index (BMI) >23 kg/m2) and/or a diagnosis of diabetes. Caregiver-infant pairs will be randomised to the FLAGs intervention or control group. Over 12 months, both groups will receive standard infant care. The intervention group will undergo regular assessments via the FLAGs web app built-in assessment tool, assessing infant feeding practices, sedentary behaviour and physical activity. The intervention group will also receive FLAGs personalised guidance and weekly digital nudges. Maternal and infant data will be collected at baseline and at 12 months. Primary outcomes are infant BMI, weight-for-length and body composition at 12 months. Secondary outcomes include lifestyle behaviours and eating habits assessed through validated questionnaires when the infants are 1 year old. We will perform both intention-to-treat and per protocol analysis.

Ethics and dissemination

Ethical approval has been obtained from the SingHealth Centralised Institutional Review Board (Ref: 2024/3224). Written informed consent will be obtained from all participants. Study findings will be disseminated via peer-reviewed publications and academic conferences, with de-identified data available on reasonable request. This trial is registered on ClinicalTrials.gov (ID: NCT06457750).

Trial registration number

NCT06457750.

Intrauterine high-dose intravenous immunoglobulin therapy during pregnancy for women with a history of pregnancy ending in documented neonatal haemochromatosis (NH001): study protocol

Por: Sasaki · A. · Yachie · A. · Mizuta · K. · Takahashi · H. · Okada · N. · Toma · T. · Motomura · K. · Matsumoto · K. · Wada · Y. S. · Ito · Y. · Ito · R. · Kasahara · M. · Fukuda · A. · Inoue · E. · Yamaguchi · K. · Nakamura · H. · Wada · S. · Sako · M.
Introduction

Neonatal haemochromatosis, considered to be a gestational alloimmune liver disease (NH-GALD), is a rare but serious disease that results in fulminant hepatic failure. The recurrence rate of NH-GALD in a subsequent infant of a mother with an affected infant is 70%–90%. Recently, antenatal maternal high-dose intravenous immunoglobulin (IVIG) therapy has been reported as being effective for preventing recurrence of NH-GALD in a subsequent infant. However, no clinical trial has been conducted to date.

Methods and analysis

This is a multicentre open-label, single-arm study of antenatal maternal high-dose IVIG therapy in pregnant women with a history of documented NH in a previous offspring. The objective of this study is to evaluate the efficacy and safety of antenatal maternal high-dose IVIG therapy in preventing or reducing the severity of alloimmune injury to the fetal liver.

Ethics and dissemination

The clinical trial is being performed in accordance with the Declaration of Helsinki. The trial protocol was approved by the Clinical Research Review Board at four hospitals. Before enrolment, written informed consent would be obtained from eligible pregnant women. The results are expected to be published in a scientific journal.

Protocol version

28 October 2024, V.8.0.

Trial registration number

jRCT1091220353.

Analysis of the analgesic mechanism of TENS-WAA in colonoscopy using the EEG-fNIRS system: a study protocol for a randomised controlled trial

Por: Wang · H. · Huang · X. · Xu · L. · Guo · S. · Gong · C. · Mengcheng · C. · Wang · W. · Wang · H. · Fang · F.
Introduction

Colonoscopy is an essential procedure for the early diagnosis of colorectal conditions; however, over 60% of patients undergoing non-sedated colonoscopy report moderate to severe pain. This study aims to investigate the central analgesic mechanisms of transcutaneous electrical nerve stimulation based on wrist-ankle acupuncture theory (TENS-WAA). A multimodal approach combining electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) will be employed to assess pain-related brain activity, with artificial intelligence applied to model the relationship between objective neurophysiological signals and subjective pain experience.

Methods

This is a single-centre, randomised, double-blind, controlled trial involving 60 patients undergoing colonoscopy without anaesthesia. Participants will be randomly allocated (1:1) to either an electrical stimulation group receiving TENS-WAA or a sham stimulation group. EEG and fNIRS data will be acquired before, during and after the procedure. The primary outcome is the analysis of EEG-fNIRS signals to characterise cerebral responses associated with pain modulation. Secondary outcomes include patient-reported pain using the Visual Analogue Scale (VAS), total colonoscopy duration and the correlation between EEG-fNIRS indicators and VAS scores. A deep learning framework will be used to enhance pain prediction accuracy.

Ethics and dissemination

This study has received ethical approval from the Ethics Committee of Changhai Hospital, Shanghai (approval reference CHEC2025-006), and has been registered at ClinicalTrials.gov. Written informed consent will be obtained from all participants. Findings will be disseminated in peer-reviewed academic journals and at relevant scientific conferences, regardless of outcome, contributing to evidence-based, non-pharmacological pain management strategies.

Trial registration number

ClinicalTrials.gov, NCT06813703.

Association between green space exposure and elderly health: a systematic review and meta-analysis protocol

Por: Che · Y. · Wang · M. · Tan · X. · Zhang · N. · Yu · S. · Yan · P.
Background

Global urbanisation is intensifying alongside steadily expanding older adult populations. The resulting air pollution profoundly impacts human health by exacerbating diseases, particularly among vulnerable elderly groups. Evidence demonstrates that green spaces mitigate air pollutant effects on health. Recent studies indicate green space exposure benefits older adults physiologically, psychologically and socially. However, existing systematic reviews have not synthesised the health impacts on this demographic. Consequently, this protocol outlines a systematic review and meta-analysis to evaluate how green space exposure affects health outcomes in older adults.

Methods and analysis

This systematic review protocol adheres to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols guidelines. A comprehensive search strategy will be applied across: (1) electronic databases (eg, PubMed, Web of Science), (2) the National Institute for Health and Care Excellence and (3) the Guidelines International Network database. Grey literature will be searched via GreyNet International, covering records from each database’s inception to November 2024. The study will analyse associations between green space exposure and health outcomes in older adults. Two researchers will independently screen literature, extract data and assess risk of bias. Heterogeneity will be assessed with a focus on study design, exposure variables and outcome measures. If sufficient homogeneity exists, a meta-analysis will be undertaken; otherwise, a narrative synthesis will be performed.

Ethics and dissemination

This study requires no ethics approval because it uses publicly available data from published studies. The completed review will be published in a peer-reviewed journal and disseminated at relevant conferences.

PROSPERO registration number

PROSPERO (CRD42024619700).

Understanding structured medication reviews delivered by clinical pharmacists in primary care in England: a national cross-sectional survey

Por: Agwunobi · A. J. · Seeley · A. E. · Tucker · K. L. · Bateman · P. A. · Clark · C. E. · Clegg · A. · Ford · G. · Gadhia · S. · Hobbs · F. D. R. · Khunti · K. · Lip · G. Y. H. · de Lusignan · S. · Mant · J. · McCahon · D. · Payne · R. A. · Perera · R. · Seidu · S. · Sheppard · J. P. · Willia
Objectives

This study explored how Structured Medication Reviews (SMRs) are being undertaken and the challenges to their successful implementation and sustainability.

Design

A cross-sectional mixed methods online survey.

Setting

Primary care in England.

Participants

120 clinical pharmacists with experience in conducting SMRs in primary care.

Results

Survey responses were received from clinical pharmacists working in 15 different regions. The majority were independent prescribers (62%, n=74), and most were employed by Primary Care Networks (65%, n=78), delivering SMRs for one or more general practices. 61% (n=73) had completed, or were currently enrolled in, the approved training pathway. Patient selection was largely driven by the primary care contract specification: care home residents, patients with polypharmacy, patients on medicines commonly associated with medication errors, patients with severe frailty and/or patients using potentially addictive pain management medication. Only 26% (n=36) of respondents reported providing patients with information in advance. The majority of SMRs were undertaken remotely by telephone and were 21–30 min in length. Much variation was reported in approaches to conducting SMRs, with SMRs in care homes being deemed the most challenging due to additional complexities involved. Challenges included not having sufficient time to prepare adequately, address complex polypharmacy and complete follow-up work generated by SMRs, issues relating to organisational support, competing national priorities and lack of ‘buy-in’ from some patients and General Practitioners.

Conclusions

These results offer insights into the role being played by the clinical pharmacy workforce in a new country-wide initiative to improve the quality and safety of care for patients taking multiple medicines. Better patient preparation and trust, alongside continuing professional development, more support and oversight for clinical pharmacists conducting SMRs, could lead to more efficient medication reviews. However, a formal evaluation of the potential of SMRs to optimise safe medicines use for patients in England is now warranted.

Co-designing, evaluating and implementing online supportive care for endometriosis in Australia: study protocol for the hybrid type 1 effectiveness, cost-effectiveness and implementation randomised controlled trial of the CodeEndo program

Por: Mikocka-Walus · A. · Naude · C. · Coitinho Biurra · Y. · Blake · L. · Bowring · J. · De Araugo · S. · Bassili · A. · Bennetts · S. K. · Hutchinson · A. M. · Ng · C. H. M. · Prasertsung · C. · Skvarc · D. · Aras · D. · Ciccia · D. · O · E. · Jacka · F. · Staudacher · H. M. · Varney · J. · A
Introduction

Endometriosis is a chronic condition affecting up to 11% of people presumed female at birth by the age of 44 years, characterised by the growth of tissue similar to the lining of the uterus on other organs. Endometriosis significantly impacts health-related quality of life (HRQoL) and imposes a substantial burden on both individuals and the healthcare system. International guidelines recommend the interdisciplinary management of endometriosis due to its significant biopsychosocial burden; however, research aimed at exploring psychological approaches for endometriosis is limited. This trial aims to evaluate the effectiveness of CodeEndo, an online co-designed interdisciplinary supportive care program, compared with a waitlist control (WLC), on HRQoL and biopsychosocial outcomes in people with a diagnosis of endometriosis.

Methods and analysis

A hybrid type 1 effectiveness and implementation randomised controlled trial (RCT) will be conducted. Eligible participants will be randomly allocated to either the CodeEndo program (n=176) or WLC group (n=176) for 8 weeks. The primary outcome will be HRQoL, and secondary outcomes will include psychological symptoms (anxiety, depression, stress), self-efficacy, menstrual, bladder and gastrointestinal symptoms, pain, fatigue, sleep, exercise, diet, symptom bothersomeness and physical and psychological well-being, measured at 8 weeks post-randomisation (T2) and 6-month follow-up (T3). Cost-effectiveness will also be examined. Longitudinal qualitative individual interviews (up to n=40) will be conducted with participants who complete the CodeEndo program to explore benefits, barriers and facilitators of ongoing use. Additionally, the CodeEndo program will undergo evaluation by a group of endometriosis healthcare providers, who will assess potential barriers and facilitators to its real-world implementation. Various process evaluation strategies will also be measured to inform future implementation. Data analyses will incorporate mixed-effects regression models on an intention-to-treat basis, cost-consequences and cost-utility, dietary and qualitative thematic analysis.

Ethics and dissemination

This protocol received ethics approval from Deakin University Research Ethics Committee (DUREC Ref: 2024-157). Dissemination is expected to include peer-reviewed journal articles, reports, conference presentations as well as websites or social media platforms of relevant chronic pain organisations. Participants will be sent a summary of trial results.

Trial registration number

ACTRN12623000598684p.

Patient navigation programmes in cancer care in Africa: protocol for a scoping review

Por: Igibah · C. O. · Asogun · D. O. · Okoduwa · B. · Uzoma · V. I. · Agbabi · O. M. · Osinaike · T. · Shittabey · M.-S. K. · Oigiangbe · M. E. · Lawal · Q. O.
Introduction

Cancer remains a major public health concern worldwide. Patient navigation, developed in the 1990s to address disparities in cancer outcomes, aims to guide patients through the complex healthcare system and improve access to timely, quality care. Despite its proven benefits, little is known about the implementation or impact of patient navigation programmes in African settings.

This scoping review aims to map the current evidence on components, procedures, outcomes and impact, as well as barriers and challenges to implementation of patient navigation programmes in cancer care across Africa.

Methods and analysis

This scoping review will follow Arksey and O’Malley’s scoping review framework, as further developed by Levac et al. A systematic search will be conducted across PubMed, African Journals Online and Google Scholar to identify relevant studies published from database inception to the date of the final search, using a combination of relevant keywords and MeSH terms. Eligible studies must be reported in English, have been carried out in Africa, involved patients diagnosed with cancer or navigating the cancer care continuum, and report on the description, implementation or evaluation of patient navigation programmes. Screening will be managed with Rayyan and carried out through a two-stage process: screening by titles and abstracts, then by full-text screening based on the prespecified inclusion and exclusion criteria. Data will be extracted into a structured Excel spreadsheet and synthesised using qualitative content analysis to identify programme characteristics, outcomes, barriers and implementation challenges.

Ethics and dissemination

This scoping review does not require ethical approval. Our findings will be published in a peer-reviewed, open-access journal on completion.

Diagnostic and therapeutic impact of ultrasound tomography in lower extremity varicose veins: protocol for a paired accuracy study and randomised controlled trial in a tertiary hospital in China

Por: Zhang · W. · Lan · F. · Yuan · S. · Guo · J. · Li · Y. · Pan · Y. · Zheng · Y.
Background

Chronic venous disease, particularly lower extremity varicose veins (VVs) and incompetent perforating veins (IPVs), is a prevalent condition associated with significant morbidity, including venous ulcers and post-surgical recurrence. Current diagnostic modalities for IPVs—such as digital subtraction angiography, CT venography, magnetic resonance venography and conventional ultrasound—are limited by ionising radiation, operator dependency or inadequate spatial resolution. Ultrasound tomography (UT), an emerging automated 3D imaging technology, offers comparable resolution, wider field of view and reduced operator bias compared with conventional ultrasound. Preliminary studies suggest UT improves IPV detection rates, yet its diagnostic accuracy and clinical utility remain unvalidated in large-scale trials. This study aims to evaluate UT’s diagnostic performance and its impact on surgical outcomes in a paired-design and randomised controlled trial (RCT), addressing a critical gap in non-invasive venous assessment.

Methods

This study combines a paired diagnostic trial and a prospective, triple-blind RCT. In the paired trial (n=84), patients with VVs (Clinical-Etiological-Anatomical-Pathophysiological C2–C5) receive both conventional ultrasound and UT combined with Doppler examination to compare IPV detection sensitivity against surgical findings. The RCT (n=264) randomises patients to conventional ultrasound group (control group) or conventional ultrasound+UT group (intervention group). After examination, all patients undergo standardised treatment (radiofrequency ablation with sclerotherapy and selective IPV ligation), with follow-up extending to 5 years. The primary endpoint is 1-year recurrence rates and secondary endpoints, including 3-month, 3-year and 5-year recurrence rates, as well as Venous Clinical Severity Scores, quality of life and Aberdeen Varicose Vein Questionnaire scores.

Ethics and dissemination

The study has been approved by the Ethics Committee of Shanghai Sixth People’s Hospital (approval number: 2024-132). Written informed consent will be obtained from each participant, and final results will be published in peer-reviewed journals.

Trial registration number

The study has been registered on Chinese Clinical Trial Registry (http://www.chictr.org.cn), identifier: ChiCTR2500097289.

Effect of liposomal bupivacaine combined with bupivacaine hydrochloride for transversus thoracic muscle plane block and pectoral nerves block in modified radical mastectomy for breast cancer: protocol for a randomised controlled trial

Por: Zhou · J. · Zhou · R. · Tang · S.-H. · Chen · Z. · Zhang · J. · Yang · D.
Introduction

The incidence of acute pain subsequent to modified radical mastectomy (MRM) for breast cancer approximates 40%, with more than half of these cases evolving into chronic pain. Currently, the commonly employed analgesic schemes in clinical practice still have inadequacies. Liposomal bupivacaine (LB) is bupivacaine encapsulated in liposomes, and it is reported that its duration of action can extend up to 72 hours. This study will investigate the analgesic efficacy of LB in combination with bupivacaine hydrochloride (BHCl) for transversus thoracic muscle plane (TTP) block and pectoral nerves (PECS) block after MRM for breast cancer.

Methods and analysis

In this prospective, randomised, controlled trial, we will enrol 80 female patients aged 30 to 65 years who are scheduled to undergo MRM under general anaesthesia in combination with nerve block. They will be randomly assigned in a 1:1 ratio to the LB+BHCl group (Group A) and the BHCl group (Group B). All patients will undergo ultrasound-guided TTP+PECS block prior to surgery. The primary outcomes are the cumulative pain visual analogue scale (VAS) scores from 6 to 72 hours post-surgery and the quality of recovery, assessed using the QoR-40 score at 72 hours post-surgery. The secondary outcomes include the time to first analgesic rescue, the consumption of analgesic drugs within 72 hours postoperatively, the occurrence of adverse events and the VAS scores at 6 and 12 months postoperatively.

Ethics and dissemination

Ethical approval was obtained from the Ethics Committee of the Affiliated Hospital of Yangzhou University (2024 Ke Lun Shen (2024-07-01)). All patients will provide written informed consent. The results of this study will be published in a peer-reviewed journal.

Trial registration number

Chinese Clinical Trial Registry (ChiCTR2400089933).

Study protocol for a prospective diagnostic accuracy study to assess the feasibility and diagnostic accuracy of serial ankle handheld Doppler waveform assessment (Ankle HHD) for surveillance after lower-limb revascularisation: WAVE study

Por: Alodayni · H. M. · Smith · S. · Poushpas · S. · Swagell · K. · Mandic · D. · Johnson · N. A. · Jaffer · U. · Davies · A. · Normahani · P.
Introduction

Peripheral arterial disease (PAD) affects approximately one in five people over 60 in the UK. In severe cases, revascularisation, such as surgical bypass or endovascular methods, is often required to restore limb perfusion. Between 2000 and 2019, 527 131 revascularisation procedures were carried out in the UK. Postprocedural surveillance is essential to detect restenosis and maintain vessel patency. However, standard surveillance using duplex ultrasound (DUS) is resource intensive. Ankle Doppler waveform assessment is quick, inexpensive and accurate for PAD diagnosis, yet its role in postrevascularisation surveillance remains unexplored. This study aims to evaluate the diagnostic accuracy of ankle handheld Doppler waveform assessment (ankle HHD) for detecting restenosis after lower limb revascularisation, as compared with formal DUS.

Methods and analysis

This is a prospective diagnostic accuracy study (ClinicalTrials.gov Identifier NCT06619223). We aim to recruit 121 people with PAD undergoing planned lower limb revascularisation at Imperial College Healthcare NHS Trust. Follow-up assessments will take place at 3 months, 6 months and 12 months post revascularisation. At each visit, a vascular scientist will perform the index test (Ankle HHD) followed by DUS as the reference standard. A subset of participants will undergo repeat testing to assess interobserver and intraobserver reliability. Restenosis will be defined as one or more arterial lesions of ≥50% stenosis or tandem lesions with a combined value of ≥50%. The primary outcome is the sensitivity of ankle Doppler waveform assessment for detecting restenosis, compared with DUS.

Ethics and dissemination

The study has received approval from Health Research Authority (HRA) and Health and Care Research Wales (REC reference 24/LO/0462). Results will be disseminated through research presentations and papers.

Trial registration number

ClinicalTrials.gov, NCT06619223.

Time to first optimal glycaemic control and associated factors among adult patients with diabetes at the University of Gondar Comprehensive Specialized Hospital, northwest Ethiopia: a retrospective cohort study

Por: Getahun · A. D. · Ayele · E. M. · Tsega · T. D. · Anberbr · S. S. · Geremew · G. W. · Biyazin · A. A. · Taye · B. M. · Mekonnen · G. A.
Objective

To assess the time to first optimal glycaemic control and its predictors among adult patients with type 1 and type 2 diabetes at the University of Gondar Comprehensive Specialized Hospital in Ethiopia.

Design

A retrospective cohort study.

Setting

University of Gondar Comprehensive Specialized Hospital, northwest, Ethiopia.

Participants

We recruited 423 adult diabetic patients who were diagnosed between 1 January 2018 and 30 December 2022 at the University of Gondar Comprehensive Specialized Hospital.

Outcome measures

The primary outcome was the time from diagnosis to the achievement of the first optimal glycaemic control, measured in months. A Cox proportional hazards regression model was fitted to identify predictors of time to first optimal glycaemic control. Data were collected with KoboToolbox from patient medical charts and exported to Stata V.17. The log-rank test was used to determine the survival difference between subgroups of participants.

Results

Median time to first optimal glycaemic control was 10.6 months. Among 423 adult diabetic patients, 301 (71.16%) achieved the first optimal glycaemic control during the study period. Age category (middle age (adjusted HR (AHR)=0.56, 95% CI 0.41 to 0.76), older age (AHR=0.52, 95% CI 0.33 to 0.82)), comorbidity (AHR=0.52, 95% CI 0.35 to 0.76), therapeutic inertia (AHR=0.20, 95% CI 0.13 to 0.30) and medication non-compliance (AHR=0.49, 95% CI 0.27 to 0.89) were significant predictors of time to optimal glycaemic control.

Conclusion

The median time to first optimal glycaemic control was prolonged. Diabetic care should focus on controlling the identified predictors to achieve optimal glycaemic control early after diagnosis.

MINMON-J: a hybrid implementation pilot study evaluating a low-barrier hepatitis C treatment model in a jail setting

Por: Berk · J. · Fu · E. S. · Murphy · M. · Akiyama · M. J. · Sulkowski · M. · Rich · J. D. · Frank · H. E.
Introduction

Hepatitis C virus (HCV) remains a leading cause of infectious disease-related morbidity in the USA, disproportionately affecting people who inject drugs and people who are incarcerated. Despite the availability of highly effective, highly tolerated direct-acting antivirals, treatment uptake in jails remains limited due to short stays, unpredictable release dates and system-level barriers. The original MINMON trial demonstrated that a low barrier ‘minimal monitoring"’ model can achieve high cure rates in community settings. This study, MINMON-J, aims to adapt and evaluate a modified version of the MINMON model for use in a jail setting, addressing the urgent need for scalable, low-barrier treatment approaches among justice-involved individuals.

Methods and analysis

MINMON-J is a single-arm, hybrid effectiveness-implementation pilot study protocol planned to recruit at the Rhode Island Department of Corrections. 40 people who are incarcerated with positive HCV RNA, who are treatment-naïve, without cirrhosis and awaiting trial, will receive 12 weeks of sofosbuvir/velpatasvir with no required lab monitoring during treatment. If released before treatment completion, participants will receive their remaining medication at discharge. Community health workers will provide post-release support. Mixed-methods evaluation will be guided by the Reach, Effectiveness, Adoption, Implementation and Maintenance/Practical, Robust Implementation and Sustainability Model framework. Primary outcomes include feasibility, acceptability and adherence. Data will be collected through administrative records, surveys (Acceptability of Intervention Measure, Feasibility of Intervention Measure, Brief Adherence Rating Scale) and qualitative interviews with participants and other relevant parties. This study was reviewed and approved by the Brown University Health Institutional Review Board (2240400) and the Rhode Island Department of Corrections Medical Research Advisory Group.

Ethics and dissemination

This study was reviewed and approved by the Brown University Health Institutional Review Board (2240400) and the Rhode Island Department of Corrections (RIDOC) Medical Research Advisory Group. All participants will provide written informed consent prior to enrolment. People who are incarcerated will be assured that participation is voluntary, will not impact their clinical care and that they may withdraw at any time without penalty. Study procedures follow ethical principles outlined in the Declaration of Helsinki and comply with federal regulations regarding research involving vulnerable populations.

Dissemination of findings will include peer-reviewed publications and presentations at national conferences focused on infectious diseases, implementation science and/or correctional health. Lay summaries will be shared with RIDOC leadership and community partners. De-identified data and associated metadata may be archived in a publicly accessible repository in accordance with National Institutes of Health data sharing policies, contingent on final institutional review board approval and participant protections.

Trial registration number

NCT06953479.

New regimens of benznidazole for the treatment of chronic Chagas disease in adult participants in indeterminate form or with mild cardiac progression (NuestroBen study): protocol for a phase III randomised, multicentre non-inferiority clinical trial

Por: Marques · T. · Forsyth · C. · Barreira · F. · Lombas · C. · Blum de Oliveira · B. · Laserna · M. · Molina · I. · Bangher · M. d. C. · Javier Fernandez · R. · Lloveras · S. · Fernandez · M. L. · Scapellato · P. · Patterson · P. · Garcia · W. · Ortiz · L. · Schijman · A. · Moreira · O. C.
Introduction

Chagas disease (CD) is one of the most neglected diseases in the world. In Latin America, CD is endemic in 21 countries, with an estimated 70 million people at risk of infection. Current treatments are limited to two nitroheterocyclic compounds: nifurtimox and benznidazole (BZN). Each has significant limitations, including long duration and safety concerns. However, data from recently completed studies suggest that reduced-duration regimens may be equally effective while enhancing safety.

Methods and analysis

NuestroBen is a phase III, randomised, multicentre clinical trial designed to assess whether shorter (2- and 4-week) regimens of BZN are non-inferior to the standard 8-week treatment. A total of 540 adult participants with no evidence of organ damage (the indeterminate form) or with mild cardiac progression (mild electrocardiographic alterations and without systolic dysfunction or symptoms), all in the chronic phase of CD, will be recruited at six study sites in Argentina and two study sites in Bolivia. Participants will be randomised to receive one of the two shortened regimens of BZN (300 mg per day for 2 or 4 weeks) or standard treatment (300 mg per day for 8 weeks). The primary endpoint is sustained elimination of parasitaemia from the end of treatment through 12 months of follow-up. Secondary endpoints will assess sustained clearance of parasitaemia at 1, 4, 6 and 8 months of follow-up from the end of treatment, drug tolerability and adherence to treatment. NuestroBen will also evaluate whether two shortened regimens of BZN improve drug tolerability and treatment adherence compared with the current standard treatment while maintaining efficacy in participants with the indeterminate form of CD or with mild cardiac involvement.

Ethics and dissemination

In Argentina, this study was approved by Fundación de Estudios Farmacológicos y Medicamentos ‘Luis M. Zieher’ for its conduct at the Instituto de Cardiología de Corrientes ‘Juana Francisca Cabral’ (reference: NuestroBen-2020/2021) and the Instituto Nacional de Parasitología ‘Dr. Mario Fatala Chaben’ (reference: NuestroBen-2020/2021) by Comité Institucional de Ética de Investigación en Salud for the Centro de Chagas y Patología Regional de Santiago del Estero (reference: NuestroBen-2020-088/2021), by Comité de Ética en Investigación for the Hospital de Infecciosas F.J. Muñiz (reference: NuestroBen-2020–4037) and the Hospital General de Agudos D.F. Santojanni (reference: NuestroBen-2020–4039) and by Comité de Bioética for the Fundación Huésped (reference: NuestroBen-2020/2021). In Bolivia, it was approved by Comité de Ética en Investigación en Salud from the Universidad Autónoma Juan Misael Saracho (reference: NuestroBen-2020/2025). All participants are asked to provide written informed consent to participate. Recruitment processes started in July 2023, and as of 15 June 2025, 140 participants have been recruited. Findings will be shared with Argentinian and Bolivian public health officials and with the Chagas and tropical medicine communities via international conferences. Findings will also be published in medical journals.

Trial registration number

NCT04897516.

Development of actionable quality indicators and an implementation toolkit for perioperative opioid stewardship in colorectal cancer in the UK Yorkshire and Humber region: a modified RAND consensus study

Por: Alderson · S. · Thomas · C. · Rossington · H. · Connearn · E. · Howell · S.
Objectives

There are global concerns about the rise in opioid prescribing. Patients undergoing potentially curative surgery for colorectal cancer (CRC) are at high risk of adverse outcomes from opioid-related complications, including delayed discharge and adjuvant chemotherapy, long-term opioid use and reduced cancer-free survival. We aimed to develop a set of actionable quality indicators for opioid stewardship for patients undergoing CRC surgery, and an implementation toolkit to support professional behaviour change to improve appropriateness of perioperative opioid prescribing.

Design

A five-round modified RAND consensus process was conducted in 2021–2024.

Setting

14 secondary care trusts across the UK Yorkshire and Humber region.

Participants

Consultant anaesthetists and national perioperative opioid stewardship experts (expert panel) and patient and public panel.

Interventions

Potential indicators were identified from a literature review, guideline search and expert panel. All potential indicators were rated on relevance and actionability (online survey, expert panel) and importance to patient care (online meeting, patient panel). A hybrid consensus meeting involving a patient representative and the expert panel discussed and rerated the indicators. An online expert survey identified potential barriers to implementation. An actionable toolkit was developed using implementation strategies and supporting resources developed where appropriate.

Results

73 potential indicators were identified. All indicators remained in the process through the online survey and patient panel. After the final meeting, four indicators remained: (1) hospital trust presence of an opioid stewardship protocol; (2) inpatient functional post-operative pain assessments; (3) patient education and discharge leaflet; and (4) senior clinician review of ‘strong’ opioids on discharge (British National Formulary definition). The number of barriers identified ranged from 8 to 22 per indicator. 49 different implementation strategies were identified for the toolkit (range 32–45 per indicator).

Conclusions

We identified four actionable quality indicators and developed an implementation toolkit that represents consensus in defining quality of care in opioid stewardship for CRC surgery.

Adherence to the recommended diabetic retinopathy screening guidelines in pregnant women with pregestational diabetes: a cross-sectional survey study

Por: Widyaputri · F. · Rogers · S. L. · Nankervis · A. J. · Conn · J. J. · Shub · A. · Staffieri · S. E. · Sasongko · M. B. · Fagan · X. J. · Symons · R. C. A. · Lim · L. L.
Objective

Diabetic retinopathy (DR) in pregnancy can cause blindness. National guidelines recommend at least one eye examination in early pregnancy, then ideally 3-monthly, through to the postpartum for pregnant women with pregestational diabetes. Here we examined adherence rates, barriers and enablers to recommended DR screening guidelines.

Design

Cross-sectional survey study, as part of a larger prospective cohort study.

Setting

Participants were recruited from two tertiary maternity hospitals in Melbourne, Australia.

Participants

Of the 173 pregnant women with type 1 (T1D) or type 2 diabetes (T2D) in the main cohort study, with an additional four who participated solely in this survey study, 130 (74.3%) completed the survey.

Primary and secondary outcome measures

This study calculated rates of adherence to guideline-recommended DR screening schedules and collected data on the enablers and barriers to attendance using a modified Compliance with Annual Diabetic Eye Exams Survey. Each of the 5-point Likert-scale survey items was compared between adherent and non-adherent participants using the Wilcoxon rank-sum test and logistic regression models were constructed to quantify associations as ORs.

Results

A retinal assessment was undertaken at least once during pregnancy in 86.3% of participants, but only 40.9% attended during their first trimester and only 21.2% attended the recommended number of examinations. Competing priorities were the main barriers to adherence, with eye examinations ranked as the fourth priority (IQR 4th–5th) among other health appointments during pregnancy. Meanwhile, knowledge of the benefits of eye screening examinations, eye-check reminders and support from relatives was identified as enablers.

Conclusions

Despite the risk of worsening DR during pregnancy, less than half of the participants adhered to recommended screening guidelines, suggesting that eye health is not a priority. Proactive measures to integrate care are needed to prevent visual loss in this growing population.

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