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☐ ☆ ✇ PLOS ONE Medicine&Health

COVID-19 knowledge, attitudes, and practices among people vulnerable to HIV in Uganda: A cross-sectional cohort analysis

by Job Kasule, Julius L. Tonzel, Natalie Burns, Tyler Hamby, Roger Ying, Grace Mirembe, Immaculate Nakabuye, Hannah Kibuuka, Margaret Yacovone, Betty Mwesigwa, Trevor A. Crowell, for the Multinational Observational Cohort of HIV and other Infections (MOCHI) Study Group

Background

People with behavioral vulnerability to HIV face barriers to healthcare engagement that may impede uptake of non-pharmaceutical and other interventions to prevent COVID-19. Understanding COVID-19 knowledge, attitudes, and practices in this population can inform disease prevention efforts during future pandemics.

Materials and methods

From October 2022 to September 2024, we enrolled participants aged 14–55 years without HIV who endorsed recent sexually transmitted infection, injection drug use, transactional sex, condomless sex, and/or anal sex with male partners. At enrollment, we collected socio-behavioral data, including assessments of COVID-19 knowledge, attitudes, and practices. Robust Poisson regression with purposeful variable selection was used to estimate prevalence ratios with 95% confidence intervals for factors associated with COVID-19 preventive practices.

Results

Among 418 participants, 228 (56.9%) were female, the median age was 21 years (interquartile range 19−24), and 362 (84.9%) reported sex work. Knowledge about SARS-CoV-2 transmission routes was high (95.4%) but lower for the consequences of genetic variants (48.5%−69.7%) and possibility for asymptomatic infection or transmission (66.7%−80.8%). Handwashing was practiced by 90.8% of participants in the preceding month, whereas mask-wearing (76.5%), avoiding symptomatic people (73.7%), and any history of COVID-19 vaccination (46.9%) were less prevalent. Males were more likely to report avoiding symptomatic people (adjusted prevalence ratio 1.16 [95% confidence interval 1.03–1.31]) and COVID-19 vaccination (1.30 [1.05–1.60]). Enrollment during the BQ.1/BQ.1.1 Omicron wave was associated with less mask-wearing (0.81 [0.67–0.99]) but more vaccination (1.59 [1.29–1.95]).

Discussion

We observed variable COVID-19 knowledge and attitudes among Ugandan adolescents and adults with little impact on COVID-19 preventive practices. Efforts to address suboptimal uptake of disease preventive practices during this and future disease outbreaks will require more than just improving knowledge.

☐ ☆ ✇ PLOS ONE Medicine&Health

Identification and validation of genes encoding humoral specificity for the chemical allergen toluene diisocyanate

Por: Adam V. Wisnewski · Jian Liu — Febrero 26th 2026 at 15:00

by Adam V. Wisnewski, Jian Liu

A panel of hybridomas specific for different isomers of toluene diisocyanate (TDI), a cross‑linking chemical used in polyurethane production, has been previously described. These hybridomas were originally developed by researchers at the USA’s National Institute for Occupational Safety and Health (NIOSH). We sought to determine the DNA sequence encoding these TDI-specific monoclonal antibodies, enabling identification of germline gene rearrangement resulting in chemical specificity as well as production of the mAbs recombinantly. B cell receptor sequencing (BCR-seq) of hybridoma RNA readily identified productive heavy and light chain antibody sequences. The productive light chains of all 7 hybridomas showed strong identity with different genomic variable (V) and joining (J) region sequences with few changes from germline configuration. However, the productive heavy chains contained more substantial changes in their genomic V and J-region sequences consistent with antigen-driven affinity maturation, as well as N- and P- nucleotide additions comprising their complementarity-determining region 3 (CDR3). The hybridoma-defined TDI-specific mAbs were subsequently produced recombinantly in a human embryonic kidney cell line expression system, purified, and tested for their binding capacity against albumin derivatized with TDI, related diisocyanates, and control antigen. The recombinant versions of the TDI-specific mAbs demonstrated binding capacity for different isomers (2,4 and 2,6) of TDI consistent with that previously reported for the hybridoma secreted clones; one specific for 2,4-TDI, one specific for 2,6-TDI, three that bind both 2,4- and 2,6-TDI, and two that show cross-reactivity with 4,4′‑methylene diphenyl diisocyanate (MDI). None of the recombinant mAbs bound to aliphatic hexamethylene diisocyanate (HDI), its oligomer, or control antigen. Additional recombinant versions of the TDI mAbs, with identical V-regions, but different C-regions, demonstrated the dependence of antigen specificity on the V-region, but also highlighted the potential for C-region sequence to affect their detection in ELISA assays. The DNA sequences defined herein may be useful to other investigators wishing to generate recombinant TDI-specific mAbs as detection reagents for research or as standards for clinical serology tests.
☐ ☆ ✇ PLOS ONE Medicine&Health

Effects of tacrolimus treatment on the gut microbiota and metabolites in liver transplant recipients

Por: Guohui Wang · Lu Liu · Hanshu Zhang · Panpan Mao · Saijuan Lu · Xiaofang Zhang · Xingde Li · Cangsang Song — Febrero 26th 2026 at 15:00

by Guohui Wang, Lu Liu, Hanshu Zhang, Panpan Mao, Saijuan Lu, Xiaofang Zhang, Xingde Li, Cangsang Song

Background

Liver transplantation (LT) is an effective treatment for patients with end-stage liver disease. In recent years, more and more evidence has supported the association between gut microbiota dysbiosis and the pathogenesis and progression of liver diseases.

Methods

The study included 36 patients who received tacrolimus treatment after liver transplantation. Patients were stratified into subgroups according to three key variables: tacrolimus treatment duration, whole-blood tacrolimus concentration, and tacrolimus concentration-to-dose (C/D) ratio. Fecal samples and whole-blood specimens were collected from all participants. The Illumina HiSeq X platform was used to detect the gut metagenome, analyzing the composition and characteristics of the gut microbiota. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) technology was employed to detect metabolites of the gut microbiota, revealing their metabolic profiles.

Results

As the duration of tacrolimus use increased, the diversity of the gut microbiota also increased, and the abundance of Escherichia coli_D and Bacteroides stercoris rose. Additionally, the abundance of Brunovirus and Uetakevirus tended to decrease. The abundance of gene functions related to chemical carcinogenesis and bacterial invasion of epithelial cells significantly decreased. In the gut microbiota metabolites, 16 substances like Astragaloside A and Acetyl-L-carnitine significantly increased, while 108 substances like Capsaicin and TLK significantly decreased. Within a certain range, as the concentration of tacrolimus in whole blood increased, the diversity of the gut microbiota increased. The abundance of Phocaeicola and Klebsiella increased, and the abundance of Peduovirus among viruses also rose. However, excessively high concentrations may lead to a decrease in the diversity of the gut microbiota and a decrease in the abundance of Phocaeicola. With respect to the C/D ratio, increased ratios were linked to significantly higher levels of 57 fecal metabolites (e.g., PC 34:2, 5-Methyl-2’-deoxycytidine), whereas 13 metabolites (e.g., FAHFA 2:0/16:0) showed substantial declines.

Conclusions

Tacrolimus treatment is associated with distinct alterations in gut microbiota and metabolites among LT recipients. These findings provide a preliminary framework for future investigations aimed at optimizing immunosuppressive regimens, although their clinical translational potential requires validation in larger-scale, prospective cohort studies.

☐ ☆ ✇ BMJ Open

Relationship between the urinary albumin-to-creatinine ratio and cardiovascular adverse outcomes in the Beijing community population: a prospective cohort study

Por: Liu · S. · Jia · J. · Huo · Y. · Fan · F. · Zhang · Y. — Febrero 26th 2026 at 13:47
Objectives

To investigate the correlation between the urinary albumin-to-creatinine ratio (UACR) and adverse cardiovascular outcomes in the Beijing community population.

Design

Prospective cohort study.

Setting

Beijing, China, from May 2014 to December 2021.

Participants

Recruited from a survey conducted as part of an ongoing atherosclerosis cohort study in the communities of Gucheng and Pingguoyuan, Shijingshan District in Beijing, China. Excluded participants who already had a history of stroke or myocardial infarction at baseline. Finally, 3627 eligible participants were included in this analysis.

Exposure

The participants were divided into three groups on the basis of baseline UACR: the normal group (UACR

Primary and secondary outcome measures

The primary endpoint was a composite endpoint (major adverse cardiovascular event, MACE) of cardiovascular death, first acute myocardial infarction or first stroke, whereas secondary endpoints included cardiovascular death, first acute myocardial infarction, first stroke or all-cause death.

Results

The study included 3627 participants. According to the multivariable Cox model, compared with those in the normal group, the risks of MACE (HR=1.47; 95% CI 1.06 to 2.06; p=0.023), cardiovascular death (HR=3.03; 95% CI 1.56 to 5.88; p=0.001) and all-cause mortality (HR=1.91; 95% CI 1.23 to 2.97; p=0.004) were significantly greater in the microalbuminuria group. The risk of MACE (HR=3.65; 95% CI 2.14 to 6.23; p

Conclusions

This study indicates that an elevated UACR is a significant risk factor for adverse cardiovascular outcomes within the community population. This association remains consistent in individuals with low-grade albuminuria.

☐ ☆ ✇ BMJ Open

Efficacy of sequential denosumab after teriparatide for 6 months compared with denosumab monotherapy in reducing risk of osteoporotic fractures in patients with new fractures: a multicentre randomised controlled trial (STAND study) protocol

Por: Chi · Y. · Zhu · Y. · Yuan · J. · Pang · Q. · Cui · L. · Jiang · Y. · Jiajue · R. · Liu · W. · Wang · O. · Li · M. · Xing · X. · Li · H. · Xie · G. · Wu · Y. · Xia · W. — Febrero 26th 2026 at 13:47
Introduction

Osteoporosis (OP) is a systemic skeletal disorder that increases fragility and susceptibility to fractures. Despite the availability of teriparatide for the treatment of patients with acute fractures with better efficacy, its long-term daily injection and high cost limit its broader use among a wider patient population, especially for those living in low- and middle-income countries. This study aims to evaluate the efficacy of a novel sequential treatment with teriparatide daily for 6 months followed by denosumab every 6 months for another 18 months, in comparison with denosumab monotherapy every 6 months for 24 months, in reducing the risk of fractures in patients with newly diagnosed osteoporotic fractures. The study will also explore the possible difference between two sequential treatments (shifting to denosumab treatment at 6 or 12 months) in their effect on increasing bone mineral density (BMD).

Methods and analysis

This study is designed as a multicentre, open-label, randomised controlled trial among 2478 patients with newly diagnosed osteoporotic fractures from 58 hospitals across China. Participants will be randomly assigned in a 10:10:1 ratio to three treatment groups: 24 months of denosumab monotherapy, early sequential treatment (teriparatide for 6 months followed by denosumab for 18 months) and late sequential treatment (teriparatide for 12 months followed by denosumab for 12 months). The primary outcome is the incidence of vertebral fractures over 24 months of treatment. Secondary outcomes include changes in BMD at the lumbar spine, total hip and femoral neck, changes in bone turnover markers (β-carboxy-terminal telopeptide of type 1 collagen and procollagen type 1 N-terminal propeptide), treatment adherence and cost-effectiveness. Follow-up assessments are scheduled at 3, 6, 9, 12, 18 and 24 months post-randomisation for primary and secondary outcomes, and biannually afterwards for the primary outcome.

Ethics and dissemination

The study protocol has been registered on ClinicalTrials.gov and has received ethical approval from the Peking Union Medical College Hospital Medical Science Research Ethics Committee (1-22PJ939). The findings will be disseminated through peer-reviewed scientific journals.

Trial registration number

NCT05866029.

☐ ☆ ✇ BMJ Open

Applications of artificial intelligence for real-world evidence generation: a protocol for a living scoping review

Por: Oikonomidi · T. · Raad · H. · Diaz-Decaro · J. · Li · H. · Y Smith · M. · Rivera · D. R. · Liu · W. · Soriano Gabarro · M. · Bennett · D. · Mack · C. D. · Teltsch · D. Y. · Gerber · J. E. · Bray · B. · Dickinson · H. · Jani · M. · Naidoo · N. — Febrero 26th 2026 at 13:47
Introduction

Artificial intelligence (AI) is rapidly evolving, offering an expanding suite of capabilities that go beyond the traditional focus on prediction and classification. Generative AI (GenAI) and agentic AI could create transformative practices to support real-world evidence (RWE) generation for health research by streamlining studies, accelerating insights and improving decision-making. However, there is no published overview available describing the range of applications in RWE generation. This review aims to describe where and how genAI and agentic AI are applied across the domains of healthcare research tasks for RWE generation. Additionally, to map applications by tasks and methods across the product lifecycle continuum, and to identify emerging gaps and opportunities.

Methods and analysis

This Living Scoping Review (LSR) will include studies reporting an application and/or evaluation of genAI or agentic AI applied to one or more RWE generation research tasks. Searches will be conducted in Embase, MEDLINE and additional sources (eg, grey literature). Citations will be independently screened by two human senior reviewers for a substantive training dataset and a commercially available screening algorithm (Robot Screener) will complete screening with a human reviewer. The LSR will include reports of studies (primary or reviews) describing and/or evaluating the application of any genAI model for RWE generation in healthcare, in English, published from 1 January 2025 to the date of search. Data will be extracted from all studies included in the LSR by one independent senior reviewer using a piloted template, with 10% quality check by a second senior reviewer. Descriptive statistics will be used to summarise the applications of genAI per RWE research task, and the results of genAI evaluations. Thematic analysis will be used to describe genAI application patterns, trends, gaps and opportunities. The LSR protocol and reports will be updated annually, and findings will be published on a publicly available website (eg, ISPE—the International Society for Pharmacoepidemiology).

Ethics and dissemination

Ethical approval is not required due to use of previously published data. Planned dissemination includes peer-reviewed publication, presentation and short summaries.

☐ ☆ ✇ BMJ Open

Cost-utility analysis of the Circle of Security-Parenting programme to reduce perinatal psychopathology in birthing parents in England

Por: Wang · J. · Rosan · C. · Alyousefi-van Dijk · K. · Darwin · Z. · Babalis · D. · Cornelius · V. · Waddingham · E. · Richards · L. · Pilling · S. · Fearon · P. · Fonagy · P. · Pizzo · E. — Febrero 23rd 2026 at 12:58
Objectives

The Circle of Security-Parenting (COS-P) group intervention has demonstrated efficacy in reducing maternal perinatal mental health difficulty (PMHD) symptoms in some contexts. The Circle of Security Intervention (COSI) study, a multisite, individually randomised, single-blind, parallel-arm controlled trial, was conducted in England to assess the clinical effectiveness of COS-P in reducing perinatal psychopathology, parenting and infant development, as well as its acceptability among the National Health Service (NHS) participants and staff. The main aim of this work is to estimate the cost-utility of COS-P plus treatment as usual (TAU) relative to TAU among mothers and birthing parents receiving NHS perinatal mental health services (PMHS) in England.

Design

A within-trial economic evaluation was performed comparing COS-P plus TAU with TAU alone, using data from the COSI trial, which employed a 2:1 randomisation ratio. Analyses were conducted from both NHS and personal social services (PSS) and societal perspectives. A 12-month time horizon was used, consistent with the final trial follow-up.

Setting

Secondary care NHS perinatal health services across multiple centres in England.

Participants

A total of 371 mothers and birthing parents with PMHD were randomised and had complete economic outcome data; 248 received COS-P plus TAU and 123 received TAU alone. Participants were eligible if they were receiving NHS PMHS; exclusion criteria were defined in the trial protocol.

Interventions

Participants in the intervention arm received the COS-P group programme in addition to TAU. The control group received TAU alone.

Primary and secondary outcome measures

The primary economic outcome was quality-adjusted life years (QALYs) over 12 months, derived from the 5-level EuroQol five-dimensional (EQ-5D-5L) questionnaire - responses. Costs were estimated from NHS and PSS as well as societal perspectives, including healthcare utilisation and productivity losses due to work absence.

Results

Compared with TAU, COS-P was associated with higher costs from both NHS and PSS (£180.58; 95% CI –£1075 to £1436) and societal (£72.94; 95% CI –£1473 to £1619) perspectives. COS-P was marginally less effective in terms of QALYs (–0.01; 95% CI –0.06 to 0.05). Probabilistic sensitivity analyses indicated substantial uncertainty around cost and effectiveness estimates.

Conclusions

On average, COS-P was associated with higher costs and did not demonstrate improvements in health-related quality of life compared with TAU alone. Given the uncertainty surrounding the estimates, further research is warranted to explore potential longer term economic and clinical impacts of COS-P in perinatal mental health settings.

Trial registration number

SRCTN18308962.

☐ ☆ ✇ BMJ Open

Blood pressure control rates among hypertensive patients managed in community health centres in Shenzhen, China: a megacity population-based observational study

Por: He · J. · Zhang · N. · Kang · L. · Yan · W. · Zeng · H. · Wu · L. · Zhu · Z. · Liu · M. · Liang · W. — Febrero 22nd 2026 at 18:08
Background

Hypertension represents a major public health challenge globally, with a rising prevalence in China. This study aims to explore the factors shaping blood pressure (BP) control among hypertensive patients managed in community health centres (CHCs), with a particular emphasis on the association with age.

Methods

This was a population-based, observational study that used healthcare records from CHC in Shenzhen, covering the period from 1 January 2000 to 8 October 2024. Univariate and multivariate logistic regression analyses were employed to assess the independent associations of various factors with BP control rate. Additionally, the study evaluated the relationship between age and BP control across six distinct age subgroups.

Results

The study included 1 073 914 participants who met the eligibility criteria, with 955 415 (88.97%) patients achieving BP control. The median baseline age was 55.9 (IQR 18–109) years. Individuals aged 45 years and above demonstrated better BP control rates (46–55, OR 1.053, 95% CI 1.020 to 1.087; 56–65, OR 1.246, 95% CI 1.205 to 1.289; 66–75, OR 2.183, 95% CI 2.103 to 2.265; >75, OR 2.159, 95% CI 2.060 to 2.262). Among young adults aged 18–35 years, increasing age was consistently associated with poorer BP control across most subgroups. For the middle-aged groups (36–45 and 46–65 years), age had little impact on BP control. In the 66–75 years age range, older age was linked to better BP control in some groups.

Conclusion

The association between age and BP control varied across age groups. Hypertension management strategies should be tailored to address the unique needs of different age groups, geographical regions and targeted populations.

☐ ☆ ✇ BMJ Open

Association between maternal age at childbirth and childrens internalising problems in the USA: a cross-sectional mediation analysis of housing instability and family support using the 2022 National Survey of Childrens Health (NSCH)

Por: Li · M. M. · Li · D. M. · Ju · Q. R. · Zhao · Y. J. · Tuo · Z. T. · Zhang · X. S. · Liu · J. — Febrero 22nd 2026 at 18:08
Objectives

The optimal maternal age at childbirth has been a topic of bourgeoning literature, with earlier ages offering physiological benefits for maternal recovery. In contrast, later ages to give birth may provide psychological advantages due to greater emotional maturity. This study investigates the impact of maternal age at childbirth on children’s internalising problems and explores the mediating roles of housing instability and family support in this relationship.

Design

Cross-sectional study; mediation analysis of the 2022 National Survey of Children’s Health (NSCH) data.

Setting

Response in the 2022 NSCH in the USA.

Participants

This study is based on the 2022 NSCH, collecting a total of 54 103 completed surveys from randomly selected households across the USA. In this study, after excluding participants due to missing values in critical variables, 48 073 participants were included in the final analysis.

Results

Our findings are consistent with the hypothesis that increasing maternal age at childbirth is associated with lower children’s internalising problems. Analysis suggested this association operates directly and is indirectly linked to child outcomes through lower levels of housing instability and higher levels of family support. However, a distinct indirect effect emerged: increased maternal age was also associated with reduced family support, which was in turn linked to more internalising problems. The results illuminate potential mechanisms linking maternal age at childbirth to children’s internalising problems and underscore the importance of stable housing and family support in mitigating risk factors for children’s emotional well-being.

Conclusion

We found an association between advanced maternal age and fewer internalising problems in children. This relationship appears to operate directly and indirectly via a sequential pathway: higher maternal age correlates with lower housing instability, which in turn is associated with increased family support, ultimately correlating with improved child mental health outcomes.

☐ ☆ ✇ BMJ Open

Ozone exposure and semen quality in low-income men with unhealthy behaviours in Foshan, China: a case-control study

Por: Chen · W. · Zou · H. · Shui · H. · Luo · L. · Jiang · Y. · Wan · Z. · Yue · Q. · Li · Q. · Liu · W. · Liu · W. — Febrero 19th 2026 at 12:57
Objective

To assess the association between ambient ozone (O3) exposure and semen quality among men with unhealthy behaviours and low income.

Design and setting

A case-control study was conducted from February 2024 to January 2025, in which male participants aged 18–45 years were recruited from Foshan, and following propensity score matching, a total of 820 participants were included in the final analysis.

Methods

The evaluated the association between O3 exposure during the 70–90 days, 10–14 days, 0–9 days and 0–90 days prior to semen collection and semen quality using stepwise conditional logistic regression analyses, and restricted cubic splines were incorporated into the models.

Results

O3 exposure during the 70–90 days and 0–90 days preceding semen sample collection was significantly associated with an increased risk of low semen quality, with ORs of 1.020 (95% CI 1.003 to 1.039) and 1.056 (95% CI 1.008 to 1.108), respectively. Additionally, O3 exposure during the 0–90-days period showed a significant positive association with abnormal sperm concentration. A non-linear relationship between O3 exposure and sperm concentration was also observed. Notably, O3 exposure during the 0–9 days before semen collection was inversely associated with the risk of low semen quality. Subgroup analyses across age, lifestyle factors and socioeconomic strata revealed no significant effect modifications.

Conclusion

This study found that O3 exposure during the 70–90 days and 0–90 days before sampling was associated with reduced semen quality in men with unhealthy behaviours and low income.

☐ ☆ ✇ Journal of Advanced Nursing

Double Burdens and Double Resilience: Dynamic Interactions in Older Couples Living With Multimorbidity

Por: Yu Zhang · Junyang Song · Mingyan Fang · Zhiyu Liu · Yuanyuan Jin — Febrero 19th 2026 at 02:14

ABSTRACT

Aims

To explore the lived experiences and daily interactions of older couples living with multimorbidity.

Design

A descriptive-interpretive qualitative study based on a generic interpretive description framework.

Methods

A total of 20 dyads were recruited using a purposive sampling strategy, and 24 semi-structured in-depth interviews were conducted between May 2023 and January 2025. Reflexive thematic analysis was used to analyse data.

Results

Four overarching themes were generated: (1) dynamic relationship structures; (2) diverse interaction patterns; (3) double burdens; and (4) double resilience. Dynamic relationship structures occurred in dyadic and triadic forms. Diverse interaction patterns involved independence, interdependence and dependence. Double burdens manifested as physical toll, financial hardship, emotional contagion and perceptual misalignment, whereas double resilience was reflected in the nudge effect, emotional resonance and promotion of family ownership of health.

Conclusion

This study adopted a dyadic perspective to explore the experiences and interactions of older couples living with multimorbidity. The caring dynamics and blurred roles of patient and care partner deviate from the traditional unidirectional, linear model of ‘one person caring for the other’. Formal or informal caregiving support from third parties, as well as the nudge effect and emotional resonance between spouses, may help orient older couples as they navigate the challenges associated with multimorbidity.

Implications for the Profession

Our findings indicate that community nurses can play a proactive role in identifying older couples living with multimorbidity through routine care attendance and assessments, enabling early recognition of health management needs. Geriatric nurses can leverage insights into couples' interaction patterns to tailor more effective care plans at different stages of illness, monitor emerging risks and identify optimal timing for third-party support. By facilitating a responsive triadic network, nurses can help ensure continuous and sustainable health care.

Reporting Method

Adhered to SRQR guidelines for qualitative research.

Patient or Public Involvement

This study did not include patient or public involvement in its design, conduct, or reporting.

☐ ☆ ✇ PLOS ONE Medicine&Health

Physiological and biochemical characterization of trypsin from <i>Neocaridina denticulata sinensis</i> and its roles in ontogenesis and immune response

Por: Dandan Feng · Yakun Song · Zuqi Wu · Wuruo Liu · Yuting Pu · Yangcan Gao · Yuying Sun · Jiquan Zhang — Febrero 17th 2026 at 15:00

by Dandan Feng, Yakun Song, Zuqi Wu, Wuruo Liu, Yuting Pu, Yangcan Gao, Yuying Sun, Jiquan Zhang

Trypsin, a canonical serine protease in crustaceans, plays a crucial role in ontogeny and antibacterial defense. Whether these biological functions correlate with its catalytic characteristics remains unresolved in the freshwater shrimp Neocaridina denticulata sinensis. To address this gap, we characterized a trypsin gene from N. denticulata sinensis (NdTryp) and assessed both its biological roles and its prospective utility. NdTryp was predominantly expressed in the hepatopancreas, where it localized to storage cells (R-cells) and tubule-lining epithelial cells (ECTs). Across development, NdTryp transcripts were essentially absent during early embryogenesis but rose sharply at late stages, temporally coincident with hatching and the onset of feeding. After a challenge with Vibrio parahaemolyticus, the expression of NdTryp was induced, with the expression level significantly increased relative to the baseline expression level. RNA interference-mediated knockdown rendered shrimp more susceptible to infection and was accompanied by extensive hepatopancreatic injury, including epithelial detachment and disruption of the basement membrane. Biochemically, recombinant NdTryp (rNdTryp) displayed proteolytic activity over a broad temperature and pH span. Activity was differentially tuned by metal ions, with several divalent cations producing marked enhancement, whereas ferric iron exerted strong inhibition. Overall, our results showed that NdTryp functions as a multifunctional protease involved in both late embryonic development and innate antimicrobial defense. Furthermore, the robust stability of rNdTryp underscores its potential as an aquafeed additive and candidate for enzymatic biotransformation.
☐ ☆ ✇ Journal of Advanced Nursing

Barriers and Facilitators to Cognitive Function Interventions in Rural Diabetic Older Adults: Using the COM‐B Model and Theoretical Domains Framework

Por: Xueyan Liu · Jie Zhang · Xiangyun Guan · Yingjuan Cao — Febrero 16th 2026 at 06:39

ABSTRACT

Aims

We aimed to identify the barriers and facilitators to participation in interventions aimed at improving cognitive function among older adults with type 2 diabetes mellitus (T2DM) and mild cognitive impairment (MCI) in rural areas.

Design

This study is the qualitative phase of a larger randomised controlled trial and employs a descriptive approach.

Methods

We conducted in-depth, semi-structured face-to-face interviews with older adults diagnosed with T2DM and MCI in rural areas of China in November 2023. The interviews were guided by the Capability, Opportunity, Motivation, and Behaviour (COM-B) model and the Theoretical Domains Framework (TDF). The interview recordings were transcribed and analysed using NVivo V.11 software. Two research assistants independently coded the transcriptions, and the identified barriers and facilitators were mapped to the corresponding domains within the COM-B model and TDF.

Results

A total of 26 older adults, aged 60–87, participated in the interviews. Nine themes were identified, including disease awareness, disease attitude, social interaction, responsibility and health, emotion guidance, organisational management, expertise and benefits, self-perception and role identity crisis. These themes mapped onto the three core components of the COM-B model as well as the nine domains of the TDF, which include: knowledge, environmental context and resources, social influences, intentions, emotions, reinforcement, beliefs about consequences, beliefs about capabilities and social identity.

Conclusion

Addressing barriers and leveraging facilitators can effectively enhance the willingness of elderly patients in rural areas to participate in interventions aimed at improving cognitive function. A multi-layered approach should be adopted, focusing on disease knowledge and attitudes, social interactions, the impact of the disease burden on both family and individuals, emotional state, organisational management, team expertise and timely assessment, individual self-efficacy and role perception.

Reporting Method

The study adheres to the COREQ reporting guidelines.

Patient or Public Contribution

The participants in this study were older adults with T2DM and MCI from rural areas. Participants were involved in the development of the interview guide and were subsequently interviewed regarding the facilitators and barriers to their participation in cognitive function interventions.

☐ ☆ ✇ Journal of Advanced Nursing

Identification of the Central Symptoms of Multidimensional Frailty Among Older Adults Using the Tilburg Frailty Indicator: A Network Analysis

Por: Yiming Qiu · Guichen Li · Rendong He · Wei Liu · Yali Yang · Lisheng Wang · Li Chen — Febrero 16th 2026 at 06:39

ABSTRACT

Background

Symptom networks offer a new approach to explore the relationships among various symptoms and provide information for optimising precise symptom management strategies. However, no previous studies have identified the central symptoms of multidimensional frailty.

Design

A cross-sectional study was conducted from December 2023 to March 2024 in China.

Settings and Participants

A total of 933 community-dwelling older adults (aged 60 years or older) in China were recruited via convenience sampling.

Methods

Sociodemographic variables, clinical variables and scores on the Tilburg Frailty Indicator were assessed in all participants. The qgraph package and IsingFit package of R software were applied to construct the symptom network. Three node centrality indices (strength, betweenness and closeness) and the expected influence were calculated to identify the central symptoms of the multidimensional frailty network. All statistical analyses were performed in R.

Results

A total of 933 individuals were surveyed in this study, including 472 (50.6%) females. The median age of all participants was 71.0 years. A total of 408 subjects were assessed as multidimensional frailty. The prevalence of multidimensional frailty was 43.7%. The centrality indices revealed that ‘difficulty in walking’, ‘difficulty in maintaining balance’, and ‘feeling down’ were the symptoms with the largest strength and expected influence values.

Conclusion

This study primarily utilised network analysis to construct a symptom network of multidimensional frailty among community-dwelling older adults. The findings revealed that difficulty in walking, difficulty in maintaining balance, and feeling down were the most central symptoms.

Implications

This study identified the central symptoms of multidimensional frailty in older adults, which may serve as primary intervention targets. Nursing staff could incorporate targeted physical and psychological interventions into person-centred care plans.

Reporting Methods

This study was reported in accordance with the STROBE guidelines.

Patient or Public Contribution

No patient or public contribution was involved in this study.

☐ ☆ ✇ BMJ Open

Construction of an emergency nursing-sensitive quality indicator system for patients with severe trauma: a modified Delphi study in the Chinese context

Por: Xie · L. · He · M. · Xing · N. · Feng · M. · Liu · X. — Febrero 15th 2026 at 19:02
Objectives

The aim of the study was to develop a nursing-sensitive quality indicator system for emergency care of patients with severe trauma, providing a scientific measurement tool for evaluating the quality of emergency trauma nursing.

Design

A modified Delphi study.

Participants

Experts working in emergency surgery or trauma surgery departments were recruited. First, initial nursing-sensitive quality indicators were derived from an analysis and synthesis of existing evidence and semistructured interviews with 12 clinical experts. Subsequently, two-round expert consultations were conducted with 15 experts from various regions of China to refine and finalise the indicators. Finally, the analytic hierarchy process was used to determine the weights of each indicator.

Results

The valid response rates of questionnaires in the two rounds of expert consultation reached 88.89% and 93.75%, respectively, and the expert authority coefficients were 0.856 and 0.880. The experts ultimately reached a consensus, establishing a nursing-sensitive quality indicator system for emergency care of patients with severe trauma, comprising 3 first-level indicators, 11 second-level indicators and 49 third-level indicators.

Conclusions

This study provides a tool for the assessment of emergency nursing service quality for patients with severe trauma, establishing a scientific and effective nursing-sensitive quality indicator system to evaluate and improve the quality of nursing services provided by emergency nurses to patients with severe trauma.

☐ ☆ ✇ BMJ Open

Preventive effect of liraglutide on postoperative delirium in elderly patients undergoing cardiac surgery: protocol for a single-centre, randomised, double-blind, placebo-controlled trial

Por: Bai · S. · Wei · M. · Wu · Y. · Zhu · X. · Wang · Z. · Wang · Y. · Zhu · C. · Guan · Y. · Wang · D. · Liu · W. — Febrero 15th 2026 at 19:02
Introduction

Postoperative delirium (POD) is a common and serious complication after cardiac surgery, particularly in elderly patients, and is associated with adverse short- and long-term outcomes. Effective preventive strategies remain limited. Liraglutide, a glucagon-like peptide-1 receptor agonist, has demonstrated potential neuroprotective, anti-inflammatory and metabolic benefits, which may reduce the incidence of POD.

Methods and analysis

This is a single-centre, randomised, double-blind, placebo-controlled trial in elderly patients undergoing elective cardiac surgery. Participants will be randomised in a 1:1 ratio to receive liraglutide or placebo from the day before surgery until postoperative day 3. A total of 260 patients are planned to be enrolled in this study. The primary endpoint is the incidence of POD within 7 days, assessed using the Confusion Assessment Method (CAM) or CAM-intensive care unit. Secondary outcomes include delirium severity, neurocognitive and psychological function, cardiac function, clinical outcomes, major adverse cardiovascular events within 1 year and perioperative biomarker changes. Exploratory outcomes include functional MRI in selected subgroups and additional biomarker analyses.

Ethics and dissemination

The protocol has been approved by the Medical Ethics Committee of Nanjing Drum Tower Hospital. Written informed consent will be obtained from all participants. Findings will be disseminated in peer-reviewed journals and academic conferences.

Trial registration number

ChiCTR2500106943.

☐ ☆ ✇ BMJ Open

Support for Transgender and Nonbinary Individuals Seeking Vaginoplasty (STRIVE) study: protocol for a national randomised pragmatic trial

Por: Sage · L. · Hart · E. · Meyer · N. · Hnilicka · O. · Penkin · A. · Poteat · T. C. · Aguayo-Romero · R. · Comstock · B. A. · STRIVE Publications Committee · Dy · G. W. · Blasdel · Corman · Deutsch · Gallo · Gore · Marsiglio · Sevelius · Solo — Febrero 12th 2026 at 19:06
Introduction

Transgender and gender-diverse individuals often face significant barriers to accessing gender-affirming care, such as hormones and/or surgery, leading to poorer mental health, lower quality of life, and higher rates of substance use and suicidal ideation. Vaginoplasty, the most commonly sought genital gender-affirming surgery (GGAS), is desired by over half of all trans women but has been performed in only a minority. This is due largely to limited surgeon availability and long wait times. Peer support has been shown to improve health outcomes and reduce stigma in marginalised populations, including trans communities, but has never been studied for efficacy during the perioperative period of GGAS. Building on priorities identified by multi-stakeholder engagement from the Transgender & Non-Binary Surgery Allied Research Collective, the Support for Transgender and Nonbinary Individuals Seeking Vaginoplasty (STRIVE) study aims to evaluate the efficacy of a centralised peer support and education intervention for patients seeking vaginoplasty, addressing a critical gap in perioperative care.

Methods and analysis

The STRIVE Study is a pragmatic, multi-site randomised controlled trial enrolling trans adults seeking full depth vaginoplasty. Participants are randomised to one of two arms; enhanced usual care, or a facilitated group intervention. The primary outcome is coping self-efficacy at 6 months, with a secondary outcome of surgical readiness. Primary analysis uses an intention-to-treat approach with linear mixed effects modelling, adjusting for selected baseline values and site. The feasibility evaluation data collected via qualitative interviews will be analysed thematically.

Ethics and dissemination

Approvals were granted by the primary site’s Institutional Review Board on 10 May 2024 (STUDY00026957). The trial was registered on 24 May 2024. Results will be published in open access journals and made available to community members in plain language formats.

Trial registration number

NCT06436560.

☐ ☆ ✇ BMJ Open

Effectiveness of self-abdominal massage on gastrointestinal function in postoperative ileus: a randomised controlled trial protocol

Por: Ma · Y. · Wang · H. · Liu · S. · Xu · Z. · Cao · Y. · Wang · G. · Liu · X. · Zhang · K. · Guo · G. — Febrero 12th 2026 at 19:06
Introduction

Postoperative ileus (POI) is a common complication after colorectal surgery, characterised by impaired gastrointestinal motility leading to abdominal distension, delayed flatus and defecation, nausea and vomiting. Self-abdominal massage (SM) can promote bowel peristalsis, but its clinical efficacy on improving colorectal cancer patients with POI treated with an intestinal decompression tube remains to be further verified. Therefore, this study aims to evaluate the efficacy and safety of SM in improving gastrointestinal function in colorectal cancer patients with POI treated with an intestinal decompression tube.

Methods and analysis

This is a prospective, single-centre, randomised controlled, assessor-blinded and statistician-blinded trial. A total of 102 colorectal cancer patients with POI undergoing intestinal decompression tube placement will be recruited. Participants will be randomised in a 1:1:1 ratio to receive basic treatment (BT), BT plus SM (BT-SM) or BT plus simple physical stimulation (BT-SPS). The primary outcome is the time to first defecation after intestinal decompression tube placement. Secondary outcomes include time to first flatus, radiological evaluation, time to tolerability of semiliquid and solid foods, severity of nausea, vomiting, pain and abdominal distension, analgesic consumption, time to intestinal decompression tube removal, incidence of complications and adverse events after intestinal decompression tube placement. Outcome measures are collected at baseline, at 1, 2, 3 and 4 days after the end of the intervention. The primary time point will be 4 days postintervention.

Ethics and dissemination

This study has been approved by the ethical application of the Shanghai Guanghua Hospital of Integrated Traditional Chinese and Western Medicine Ethics Committee (2025-K-49-01). All patients will be required to provide informed consent. Study results will be disseminated through publication in peer-reviewed journals and international conferences.

Trial registration number

ITMCTR2025001401.

☐ ☆ ✇ BMJ Open

Investigating the impact of residual refraction within {+/-}1.0 dioptre on uncorrected distance visual acuity in pseudophakic eyes: a cross-sectional study

Por: Li · D. · Zhang · J. · Jin · L. · Han · X. · Chen · L. · Liu · Y. · Cai · W. · Cao · Q. — Febrero 12th 2026 at 19:06
Objectives

To investigate the impact of residual refraction within ±1.0 dioptre (D) on uncorrected distance visual acuity (UDVA) in pseudophakic eyes.

Design

Cross-sectional study.

Setting

This study was based on retrospectively collected electronic refraction records from a tertiary care academic ophthalmology centre in southern China between May 2022 and July 2025.

Participants

Patients aged ≥40 years who underwent uneventful phacoemulsification cataract surgery with in-the-bag monofocal intraocular lens implantation and achieved a postoperative corrected distance visual acuity (CDVA) of ≤0.1 logarithm of the minimum angle of resolution were enrolled. They were stratified by astigmatism subtypes: minimal astigmatism (

Outcomes measures

Postoperative evaluation (≥1 month) included spherical equivalent (SE) refraction, UDVA and CDVA. UDVA was compared across eyes with SE intervals of 0.50 D within ±1.0 D. ORs were calculated to assess the relative risk of failing to achieve a UDVA of 0.1 or better for postoperative SE within ±1.0 D, using 0.00 D as the reference.

Results

The study included 1333 eyes from 1333 patients (mean (SD) age, 66.1 (8.96) years; 532 male (39.9%)). Overall, and particularly in the minimal astigmatism (

Conclusions

The impact of refractive errors (≤1.0 D) on UDVA was associated with the magnitude and type of astigmatism. Residual astigmatism of ≥0.50 D exerted a significant negative effect on UDVA. A plano SE (0 D) was optimal for minimum and WTR astigmatism, whereas slight hyperopia yielded superior UDVA in ATR and oblique astigmatism.

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