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Integrating agro-physiological traits and yield performance in soybean (Glycine max L.) resistance to fall armyworm (Spodoptera frugiperda) through genotype analysis. 通过基因型分析综合大豆(Glycine max L.)抗秋粘虫的农业生理性状和产量表现。
IF 2.4 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.7717/peerj.20753
Anna Satyana Karyawati, Demas Dharmawan, Himma Rahmadillah, Budi Waluyo, Vina Mafazatul Ula

Fall armyworm (Spodoptera frugiperda) is a major invasive pest threatening soybean production, and identifying resistant genotypes is essential for sustainable crop protection. This study evaluated 36 soybean genotypes for their resistance to S. frugiperda based on leaf damage intensity and frequency, resistance classification, morphophysiological traits, and yield components. The research was conducted under field conditions using a randomized complete block design (RCBD) with three replications. Armyworm damage was assessed at 36 and 41 days after planting (DAP), and all quantitative data were analyzed using ANOVA followed by the Scott-Knott test at a 5% significance level. Data were presented as mean ± standard deviation (SD). Significant variation was evident among genotypes, with attack intensity at 41 DAP ranging from 18.31 ± 10.64% to 61.20 ± 11.39%, and attack frequency from 33.38 ± 16.92% to 95.49 ± 5.35%. Based on mean intensity values, one genotype was categorized as strongly resistant (SR) (UB 2), four as resistant (R) (UBASK24, UBASK35, GBG, TGM), and a broader set as moderately resistant (MR), while highly susceptible (HS) genotypes included UBASK15, UBASK62, UBASK64, UBASK32, UBASK36, and UBASK14. Morphophysiological traits exhibited wide variation, including leaf trichome density (13.56-42.11 trichomes 0.25 cm-2), plant height (38.42-78.67 cm), and flowering time (31-47 DAP), while yield traits identified TGM, UBASK35, UBASK24, and GBG as the highest-performing genotypes. Overall, UB 2, UBASK24, UBASK35, GBG, and TGM are promising parental candidates for breeding soybean resistance against S. frugiperda, integrating strong resistance expression with favorable agronomic performance.

秋粘虫(Spodoptera frugiperda)是威胁大豆生产的主要入侵害虫,鉴定抗性基因型对作物可持续保护至关重要。从叶片危害强度和发生频率、抗性分类、形态生理性状和产量组成等方面对36个大豆基因型进行了抗性评价。研究采用随机完全区组设计(RCBD),在野外条件下进行,有3个重复。在种植后36和41 d (DAP)评估粘虫危害,所有定量数据采用方差分析,然后进行5%显著性水平的Scott-Knott检验。数据以均数±标准差(SD)表示。基因型间差异显著,41 DAP的攻击强度在18.31±10.64% ~ 61.20±11.39%之间,攻击频率在33.38±16.92% ~ 95.49±5.35%之间。根据平均强度值,1个基因型被分类为强耐药(SR) (UB 2), 4个基因型(R) (UBASK24, UBASK35, GBG, TGM),以及更广泛的中度耐药(MR),而高度敏感(HS)基因型包括UBASK15, UBASK62, UBASK64, UBASK32, UBASK36和UBASK14。叶片毛状体密度(13.56 ~ 42.11毛状体,0.25 cm-2)、株高(38.42 ~ 78.67 cm)、开花时间(31 ~ 47 DAP)等形态生理性状差异较大,而产量性状中表现最好的基因型为TGM、UBASK35、UBASK24和GBG。综上所述,ub2、UBASK24、UBASK35、GBG和TGM是具有较强抗性表达和良好农艺性能的大豆抗性亲本。
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引用次数: 0
Admission serum tropomyosin 4 levels predict 1-year functional outcomes in acute ischemic stroke. 入院血清原肌球蛋白4水平预测急性缺血性脑卒中1年功能结局。
IF 2.4 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.7717/peerj.20745
Keying Wu, Mingxi Chen, Huan Wang, Yuyi Zhu, Yaqi Chen, Shihong Zhang, Xinyi Leng, Zilong Hao, Deren Wang

Background: Tropomyosin 4 (TPM4) regulates neurite outgrowth and vascular pathology but its role as a biomarker for predicting outcomes in stroke patients is unclear. This study investigated the association between serum TPM4 levels and 1-year functional outcomes in acute ischemic stroke (AIS) patients.

Methods: AIS patients admitted within 24 h post-onset from the Chengdu Stroke Registry were included. Serum TPM4 levels were measured by enzyme-linked immunosorbent assay (ELISA). Poor functional outcomes were defined as a modified Rankin Scale (mRS) score >2 at 1 year after stroke onset. Multivariate logistic regression assessed TPM4's association with outcomes, with its predictive incremental value evaluated by discrimination, reclassification, and overall performance metrics.

Results: Among 181 patients (median age 66 years, 64.1% male), 59 (32.6%) experienced poor outcomes at 1 year, including 16 deaths (8.8%). Serum TPM4 levels on admission were negatively correlated with the National Institutes of Health Stroke Scale (NIHSS) score (r = -0.185, p = 0.013). Adjusted for confounders, lower serum TPM4 levels were independently associated with 1-year poor functional outcomes (adjusted OR 0.045, 95% CI [0.005-0.393], p = 0.005). Serum TPM4 levels had acceptable discriminative ability for predicting poor outcomes (AUROC 0.706, 95% CI [0.621-0.791], p < 0.0001). Incorporating TPM4 into the basic model significantly improved the predictive power for poor functional outcomes (net reclassification index: 31.87%, p = 0.041; integrated discrimination improvement: 5.01%, p = 0.008; Brier score decreased from 0.16 to 0.15, p = 0.012).

Conclusions: Lower serum TPM4 levels on admission were independently associated with poor functional outcomes at 1 year in AIS patients, suggesting that TPM4 may serve as a potential biomarker for long-term outcomes and offer insights into its potential role in stroke pathophysiology. These findings need to be further verified in external cohorts.

背景:原肌球蛋白4 (TPM4)调节神经突生长和血管病理,但其作为预测脑卒中患者预后的生物标志物的作用尚不清楚。本研究探讨了急性缺血性卒中(AIS)患者血清TPM4水平与1年功能结局之间的关系。方法:纳入成都市卒中登记中心发病后24小时内入院的AIS患者。采用酶联免疫吸附试验(ELISA)检测血清TPM4水平。脑卒中发作后1年,功能不良的定义为改良的Rankin量表(mRS)评分为bb0.2。多变量逻辑回归评估TPM4与预后的关系,并通过区分、重新分类和总体表现指标评估其预测增量值。结果:181例患者(中位年龄66岁,男性64.1%),59例(32.6%)1年预后不良,包括16例死亡(8.8%)。入院时血清TPM4水平与NIHSS评分呈负相关(r = -0.185, p = 0.013)。经混杂因素校正后,较低的血清TPM4水平与1年功能不良预后独立相关(校正OR 0.045, 95% CI [0.005-0.393], p = 0.005)。血清TPM4水平在预测不良预后方面具有可接受的判别能力(AUROC为0.706,95% CI [0.621-0.791], p < 0.0001)。将TPM4纳入基本模型显著提高了功能不良预后的预测能力(净重分类指数:31.87%,p = 0.041;综合判别改善:5.01%,p = 0.008; Brier评分从0.16降至0.15,p = 0.012)。结论:入院时较低的血清TPM4水平与AIS患者1年后较差的功能预后独立相关,表明TPM4可能作为长期预后的潜在生物标志物,并为其在卒中病理生理中的潜在作用提供见解。这些发现需要在外部队列中进一步验证。
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引用次数: 0
Evidence-based practice among physiotherapists in India: a nationwide survey of knowledge, attitude, and implementation behavior. 印度物理治疗师的循证实践:一项关于知识、态度和实施行为的全国性调查。
IF 2.4 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.7717/peerj.20632
Mohammad Sidiq, Jyoti Sharma, Balamurugan Janakiraman, Faizan Kashoo, Aksh Chahal, Ruchi Varshney, Sumbul Ansari, Akriti Pandey, Richa Hirendra Rai, Abdulqader Khormi, Imran Khan, Mohammed M Alshehri, Monira I Aldhahi

Background: Physiotherapy services are often integrated within the broader healthcare system in India. Unlike in developed countries, physiotherapy is still limited to indirect access and needs a referral from other healthcare providers, which potentially limits physiotherapists. The purpose of this study was to explore the knowledge or skill, attitude, and behavior towards the implementation of evidence-based practice (EBP) in physiotherapy care. In addition, the physiotherapist's perception of barriers in the implementation of EBP was inquired.

Methods: A cross-sectional study was conducted through an online survey involving two thousand nine hundred and ninety-six physiotherapists from 22 states/union territories in India. A 24-item EBP questionnaire (EBPQ) investigating knowledge, attitude, and behavior domains with a 1 to 7 Likert scale response for each item, with a higher score indicating a favorable response. A linear regression model was used to analyze the relationship between factors and evidence-based practice behavior among physiotherapists.

Results: The mean age of the participants was 35.8 ± 6.2 years, with a work experience of 13.25 ± 6.38 years. The overall EBPQ mean score of Indian physiotherapists was 3.6 ± 0.38, and the mean scores of the domains-knowledge, attitude, and implementation of EBP-were 3.59 ± 0.53, 4.29 ± 0.79, and 3.20 ± 0.62, respectively. The EBP domains were mainly determined by the educational attainment and workplace, which explained 46.1% of the variance. Lack of time and skills was identified as the top barrier influencing EBP among physiotherapists in India. The behavior dimension score of EBPQ is determined by 8 knowledge items and 2 attitude items, which explain 61.2% of the variance.

Conclusions: The Indian physiotherapists reported a positive attitude toward evidence-based practice; however, their knowledge and behavior were observed to be insufficient. Lack of time, limited skills, a shortage of resources, and limitations in applying EBP were reported as the main barriers.

背景:在印度,物理治疗服务通常被纳入更广泛的医疗保健系统。与发达国家不同,物理治疗仍然局限于间接获取,需要其他医疗保健提供者的转诊,这可能限制了物理治疗师。本研究的目的是探讨在物理治疗护理中实施循证实践(EBP)的知识或技能、态度和行为。此外,我们还调查了物理治疗师对实施EBP障碍的看法。方法:一项横断面研究通过在线调查进行,涉及来自印度22个邦/联邦属地的2,996名物理治疗师。一个24题EBP问卷(EBPQ)调查知识、态度和行为领域,每个题的李克特反应为1到7分,得分越高表示反应越好。采用线性回归模型分析各因素与物理治疗师循证执业行为的关系。结果:参与者平均年龄为35.8±6.2岁,工作经验为13.25±6.38岁。印度物理治疗师的EBPQ总分平均得分为3.6±0.38分,ebp知识、态度和执行领域平均得分分别为3.59±0.53分、4.29±0.79分和3.20±0.62分。EBP域主要由受教育程度和工作场所决定,解释了46.1%的方差。缺乏时间和技能被确定为影响印度物理治疗师EBP的最大障碍。EBPQ的行为维度得分由8个知识项和2个态度项决定,解释了61.2%的方差。结论:印度物理治疗师对循证实践持积极态度;然而,他们的知识和行为被观察到是不足的。缺乏时间,有限的技能,资源短缺和应用EBP的限制被报道为主要障碍。
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引用次数: 0
Effects of variable resistance training on lower limb explosive power in athletes: a systematic review and meta-analysis. 可变阻力训练对运动员下肢爆发力的影响:系统回顾和荟萃分析。
IF 2.4 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.7717/peerj.20644
Ziqi Xu, Songpeng Su, Zitong Xu

Objectives: This study aims to investigate the effects of variable resistance training (VRT) on athletes' lower limb explosive power through assessments of jumping, sprinting, and change of direction (COD) performance.

Methods: A systematic search was conducted across four electronic databases (Web of Science, PubMed, Scopus, ProQuest) from their inception until March 23, 2025. Study eligibility was assessed against the Population, Intervention, Comparison, Outcomes, Study design (PICOS) framework. Following data extraction, the methodological quality of the included studies was assessed using the Cochrane Risk of Bias tool. Data analysis was performed using Stata 15 software, with standardized mean differences (SMD) and 95% confidence intervals calculated as the pooled effect size measure.

Results: Fifteen articles involving 442 participants were included in the final analysis. The overall meta-analysis demonstrated that VRT was an effective method for enhancing athletes' jumping performance (SMD = 0.81 cm, p < 0.001), sprint performance (SMD = -1.13 s, p < 0.001), and COD performance (SMD = -1.66 s, p < 0.001). Subgroup analyses indicated significant positive effects of VRT on vertical jump (VJ: SMD = 0.31 cm, p = 0.027), squat jump (SJ: SMD = 0.94 cm, p < 0.001), countermovement jump (CMJ: SMD = 1.01 cm, p < 0.001), 5-m sprint (SMD = -1.18 s, p < 0.001), 10-m sprint (SMD = -1.18 s, p < 0.001), 30-m sprint (SMD = -1.08 s, p = 0.013), T-test (SMD = -2.01 s, p < 0.001), repeated change of direction (RCOD: SMD = -2.01 s, p < 0.001), and Illinois test (SMD = -1.85 s, p < 0.001).

Conclusion: This systematic review suggests that VRT may serve as an effective training strategy for enhancing lower-limb explosive power in athletes. However, due to significant heterogeneity among the included studies and potential publication bias, the definitive benefits of VRT require further validation through additional high-quality research.

目的:研究可变阻力训练(VRT)对运动员下肢爆发力的影响,通过对运动员跳跃、短跑和方向改变(COD)表现的评估。方法:系统检索四个电子数据库(Web of Science, PubMed, Scopus, ProQuest),从其建立到2025年3月23日。研究资格根据人群、干预、比较、结果、研究设计(PICOS)框架进行评估。资料提取后,使用Cochrane偏倚风险工具评估纳入研究的方法学质量。使用Stata 15软件进行数据分析,计算标准化平均差异(SMD)和95%置信区间作为合并效应大小度量。结果:15篇文献纳入最终分析,共纳入442名受试者。整体meta分析表明,VRT可以有效提高运动员的跳跃成绩(SMD = 0.81 cm, p p p = 0.027)、深蹲跳成绩(SJ: SMD = 0.94 cm, p p p p = 0.013)、t检验(SMD = -2.01 s, p p p)。结论:本系统综述提示VRT可以作为提高运动员下肢爆发力的有效训练策略。然而,由于纳入的研究存在显著的异质性和潜在的发表偏倚,VRT的确切益处需要通过额外的高质量研究进一步验证。
{"title":"Effects of variable resistance training on lower limb explosive power in athletes: a systematic review and meta-analysis.","authors":"Ziqi Xu, Songpeng Su, Zitong Xu","doi":"10.7717/peerj.20644","DOIUrl":"https://doi.org/10.7717/peerj.20644","url":null,"abstract":"<p><strong>Objectives: </strong>This study aims to investigate the effects of variable resistance training (VRT) on athletes' lower limb explosive power through assessments of jumping, sprinting, and change of direction (COD) performance.</p><p><strong>Methods: </strong>A systematic search was conducted across four electronic databases (Web of Science, PubMed, Scopus, ProQuest) from their inception until March 23, 2025. Study eligibility was assessed against the Population, Intervention, Comparison, Outcomes, Study design (PICOS) framework. Following data extraction, the methodological quality of the included studies was assessed using the Cochrane Risk of Bias tool. Data analysis was performed using Stata 15 software, with standardized mean differences (SMD) and 95% confidence intervals calculated as the pooled effect size measure.</p><p><strong>Results: </strong>Fifteen articles involving 442 participants were included in the final analysis. The overall meta-analysis demonstrated that VRT was an effective method for enhancing athletes' jumping performance (SMD = 0.81 cm, <i>p</i> < 0.001), sprint performance (SMD = -1.13 s, <i>p</i> < 0.001), and COD performance (SMD = -1.66 s, <i>p</i> < 0.001). Subgroup analyses indicated significant positive effects of VRT on vertical jump (VJ: SMD = 0.31 cm, <i>p</i> = 0.027), squat jump (SJ: SMD = 0.94 cm, <i>p</i> < 0.001), countermovement jump (CMJ: SMD = 1.01 cm, <i>p</i> < 0.001), 5-m sprint (SMD = -1.18 s, <i>p</i> < 0.001), 10-m sprint (SMD = -1.18 s, <i>p</i> < 0.001), 30-m sprint (SMD = -1.08 s, <i>p</i> = 0.013), T-test (SMD = -2.01 s, <i>p</i> < 0.001), repeated change of direction (RCOD: SMD = -2.01 s, <i>p</i> < 0.001), and Illinois test (SMD = -1.85 s, <i>p</i> < 0.001).</p><p><strong>Conclusion: </strong>This systematic review suggests that VRT may serve as an effective training strategy for enhancing lower-limb explosive power in athletes. However, due to significant heterogeneity among the included studies and potential publication bias, the definitive benefits of VRT require further validation through additional high-quality research.</p>","PeriodicalId":19799,"journal":{"name":"PeerJ","volume":"14 ","pages":"e20644"},"PeriodicalIF":2.4,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12882733/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146143126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development and optimization of mathematical models for uniform seed placement in precision black cumin seeding under laboratory conditions. 实验室条件下小茴香精密播种均匀撒种数学模型的建立与优化。
IF 2.4 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.7717/peerj.20755
Gulin Turkusay, Arzu Yazgi

Objectives: The objective of the study was to quantify seed flow consistency and in-row spacing accuracy when using a conveyor belt-style metering device under varying operational parameters, to develop mathematical models, and to optimize the uniformity of seed placement for black cumin seeding.

Methods: Seed flow properties and the uniformity of in-row seed distribution uniformity were evaluated through weighing tests and sticky belt methods, respectively. The uniformity of the flow was assessed using coefficient of variation (CV) values, while the in-row seed distribution uniformity was evaluated by using the variation factor (Vf) and the goodness criterion (λ). The experiments were conducted based on Central Composite Design (CCD) under laboratory conditions. The forward speed, seed rate, and seed falling angle were chosen as independent variables. The experiments were conducted at five levels of forward speed (1.01, 1.4, 2.0, 2.6, and 3.01 m s-1), five levels of seed rate (6.6, 10, 15, 20 and 23.4 kg ha-1), and five levels of seed falling angle (1.36, 15, 35, 55 and 68.64°).

Results: The polynomial functions were developed and the Vf and λ models were optimized. Optimization reduced the variation factor (Vf) to 0.53 and improved the goodness criterion (λ) to 91.67%, indicating a substantial enhancement in seed placement uniformity. For the Vf model, the optimum forward speed was found to be 1.05 m s-1, with a seed rate of 12.35 kg ha-1 and a seed falling angle of 35°; whereas for the λ model, the corresponding values were calculated 1.55 m s-1, 21.1 kg ha-1, and 28.5°, respectively. The developed models showed high predictive accuracy, with an R 2 value of 95.96% for the λ model. Based on the findings of this work, the seed rate was determined as the most important parameter for all models considered.

Conclusions: The results of the experiments also revealed that the conveyor belt metering unit could be used for the seeding process of black cumin seeds with great success, without encountering significant problems. The comparison of R 2 value of the λ and Vf models indicated that the λ model had a better variable prediction. Therefore, the optimum values from the λ model may be more useful than those from the Vf model.

目的:研究不同操作参数下传送带式计量装置的种子流一致性和行间距精度,建立数学模型,优化黑孜然播种的均匀性。方法:采用称重法和粘带法分别评价种子流动特性和排播均匀性。采用变异系数(CV)评价种子流动均匀性,采用变异因子(Vf)和优度准则(λ)评价种子行内分布均匀性。实验采用中心复合设计(CCD),在实验室条件下进行。选取前进速度、种子速率和落粒角度作为自变量。试验设置了5个前进速度水平(1.01、1.4、2.0、2.6和3.01 m s-1), 5个种子速率水平(6.6、10、15、20和23.4 kg ha-1), 5个落种角度水平(1.36、15、35、55和68.64°)。结果:建立了多项式函数,优化了Vf和λ模型。优化后,变异因子(Vf)降低至0.53,优度判据(λ)提高至91.67%,显著提高了播种均匀性。Vf模型的最佳前进速度为1.05 m s-1,种子速率为12.35 kg ha-1,落种角为35°;而λ模型的对应值分别为1.55 m s-1、21.1 kg ha-1和28.5°。所建立的模型具有较高的预测精度,λ模型的r2值为95.96%。基于这项工作的发现,种子率被确定为所有模型中最重要的参数。结论:实验结果还表明,输送带计量装置可用于黑孜然种子的播种过程,并且成功率很高,不会遇到明显的问题。λ模型和Vf模型的r2值比较表明,λ模型具有较好的变量预测效果。因此,λ模型的最优值可能比Vf模型的最优值更有用。
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引用次数: 0
Cardioprotective effect of resveratrol in myocardial ischemia/reperfusion injury and myocardial infarction: a pre-clinical meta-analysis in animal studies. 白藜芦醇对心肌缺血/再灌注损伤和心肌梗死的心脏保护作用:动物研究的临床前荟萃分析
IF 2.4 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.7717/peerj.20708
Shi-Jie Wei, Qi-Hao Guo, Xin-Yu Wei, Si-Yu Chen, Sheng Deng, Liang An, Wen-Jing Zeng, Yi-Fan Zeng

This meta-analysis aimed to assess the cardioprotective effect of resveratrol (RES) against myocardial ischemia/reperfusion injury (MIRI) and myocardial infarction (MI) in the animal. PubMed, Web of Science, and EMBASE were searched. Primary outcomes included myocardial infarct size (IS) and cardiac function. Secondary outcomes included cardiac injury enzyme, oxidative stress level, inflammatory cytokine, and apoptosis rate. Subgroup analysis, publication bias, sensitivity analysis, meta-regression, and dosage-efficacy analysis were used to evaluate the risk of bias. Fifty-seven studies were included involving 1,125 animals. The results showed that RES treatment decreased IS in animal models of MIRI (SMD: -5.44; 95% CI [-6.42 to -4.45]; P < 0.01; I2 = 86%) and MI (SMD: -3.41; 95% CI [-4.44 to -2.38]; P < 0.01; I2 = 75%). Moreover, RES treatment improved cardiac function, decreased cardiac injury enzymes, down-regulated oxidative stress levels, alleviated inflammatory cytokine levels, and reduced apoptosis rate in animal models of MIRI and MI. This meta-analysis of preclinical animal studies suggested that RES may have potential in alleviating MIRI and MI. However, the translational potential of RES remains uncertain, and additional preclinical studies with standardized protocols, comorbid models, and eventual clinical trials are needed to confirm these results.

本荟萃分析旨在评估白藜芦醇(RES)对动物心肌缺血/再灌注损伤(MIRI)和心肌梗死(MI)的心脏保护作用。检索PubMed、Web of Science和EMBASE。主要结局包括心肌梗死面积(IS)和心功能。次要结局包括心脏损伤酶、氧化应激水平、炎症细胞因子和细胞凋亡率。采用亚组分析、发表偏倚、敏感性分析、meta回归和剂量-疗效分析评价偏倚风险。其中包括57项研究,涉及1125只动物。结果显示,RES治疗降低了MIRI动物模型的IS (SMD: -5.44; 95% CI [-6.42 ~ -4.45]; P 2 = 86%)和MI (SMD: -3.41; 95% CI [-4.44 ~ -2.38]; P 2 = 75%)。此外,在MIRI和MI动物模型中,RES治疗改善了心功能,降低了心脏损伤酶,下调了氧化应激水平,减轻了炎症细胞因子水平,降低了细胞凋亡率。这项临床前动物研究的荟荟性分析表明,RES可能具有减轻MIRI和MI的潜力。然而,RES的转化潜力仍然不确定,需要进一步的标准化方案、共病模型、最终的临床试验需要证实这些结果。
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引用次数: 0
Multifocal transcranial direct current stimulation enhances lower limb jump performance and neuromuscular adaptation in female collegiate basketball players. 多灶经颅直流电刺激提高女大学生篮球运动员下肢跳能力和神经肌肉适应能力。
IF 2.4 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.7717/peerj.20705
Ruibo Chen, Qingwei Wang, Danyang Li, Binbin Jia

Background: Transcranial direct current stimulation (tDCS) has been reported to enhance explosive strength in lower limb skeletal muscles. Nevertheless, findings regarding the impact of tDCS on jump performance remain inconclusive, potentially due to variations in stimulation montage and current intensity. Therefore, we aimed to elucidate the effects of multifocal tDCS on lower limb jump kinetics and neuromuscular adaptation.

Methods: Fourteen female collegiate basketball players were enrolled in a randomized, crossover, controlled trial. Each participant underwent three intervention sessions in a randomized sequence: 2 mA tDCS, 4 mA tDCS, and sham tDCS, all targeting the primary motor cortex (M1). After each stimulation session, countermovement jump (CMJ), squat jump (SJ), drop jump (DJ), and surface electromyography (EMG) data were collected. Statistical analysis was performed using one-way repeated measures ANOVA.

Results: The 4 mA multifocal tDCS condition produced a significant increase in jump height compared to baseline, sham, and the 2 mA condition. Similarly, the concentric impulse was markedly higher in the 4 mA group relative to all other conditions. Relative peak force was significantly improved in the 4 mA group versus baseline, and relative peak power was significantly greater under 4 mA tDCS compared to sham stimulation. The modified reactive strength index (RSImod) was also enhanced considerably following 4 mA tDCS, relative to both baseline and sham conditions. However, EMG analysis indicated that none of the tDCS interventions significantly affected the root mean square (RMS) values of lower limb muscle activation, including the rectus femoris (RF), vastus lateralis (VL), vastus medialis (VM), biceps femoris (BF), semitendinosus/semimembranosus (SEM), medial gastrocnemius (MG), lateral gastrocnemius (GL), and tibialis anterior (TA).

Conclusion: Multifocal anodal tDCS at an intensity of 4 mA significantly improves lower limb jump performance in female collegiate basketball athletes. Integrating multifocal anodal tDCS into routine training regimens may serve as a practical and effective adjunct for enhancing performance in this population.

背景:经颅直流电刺激(tDCS)已被报道可增强下肢骨骼肌的爆发力。然而,关于tDCS对跳跃表现的影响的研究结果仍然没有定论,可能是由于刺激蒙太奇和电流强度的变化。因此,我们旨在阐明多灶tDCS对下肢跳跃动力学和神经肌肉适应的影响。方法:对14名女大学生篮球运动员进行随机、交叉、对照试验。每个参与者按随机顺序进行三次干预:2 mA tDCS, 4 mA tDCS和假tDCS,均针对初级运动皮层(M1)。每次刺激结束后,收集反动作跳(CMJ)、蹲跳(SJ)、落跳(DJ)和表面肌电(EMG)数据。统计学分析采用单因素重复测量方差分析。结果:与基线、假手术和2 mA条件相比,4 mA多灶tDCS条件使跳跃高度显著增加。同样,相对于所有其他条件,4 mA组的同心脉冲明显更高。与基线相比,4ma组的相对峰值力显著提高,与假刺激相比,4ma tDCS下的相对峰值功率显著增加。改良反应强度指数(RSImod)在4 mA tDCS后也显著增强,相对于基线和假手术条件。然而,肌电分析显示,tDCS干预均未显著影响下肢肌肉激活的均方根(RMS)值,包括股直肌(RF)、股外侧肌(VL)、股内侧肌(VM)、股二头肌(BF)、半腱肌/半膜肌(SEM)、腓肠肌内侧肌(MG)、腓肠肌外侧肌(GL)和胫前肌(TA)。结论:4ma强度的多灶性淋巴结tDCS可显著提高女大学生篮球运动员的下肢跳跃能力。将多焦点淋巴结tDCS纳入常规训练方案可能是提高这一人群表现的一种实用有效的辅助手段。
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引用次数: 0
AI-based detection and sizing of saccular intracranial aneurysms: a single-center retrospective validation study using computed tomography angiography. 基于人工智能的颅内囊状动脉瘤的检测和大小:一项使用计算机断层血管造影的单中心回顾性验证研究。
IF 2.4 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.7717/peerj.20712
Lu Zeng, Xue-Hua Zhang, Wen-Hao Li, Bi-Yao Qiao, Jia-Jia Chen, Guang-Xian Wang

Background: Imaging advantages have raised intracranial aneurysm (IA) detection rates but have also increased radiologists' workloads. Coupled with visual fatigue, this heavier burden heightens the risk of missed or erroneous diagnoses. Concurrently, artificial intelligence (AI) has shown great promise for analyzing medical images. This study aims to evaluate the diagnostic performance of AI software for IAs and to provide an initial, single-centre validation of its potential as a supportive tool in future deployment.

Methods: Between January 2019 and September 2023, 452 patients with 544 IAs diagnosed by head and neck computed tomography angiography (CTA) who also underwent digital subtraction angiography (DSA) were included. The AI's ability to detect the presence, location, and size of IAs was recorded. Its results were compared with DSA, and the agreement between AI and radiologists in measuring IA size was evaluated.

Results: The AI software demonstrated a sensitivity of 88.97% (95% CI [0.861-0.963]) and an accuracy of 75.04% (95% CI [0.715-0.783]) for detecting IAs. Specifically, the accuracy and sensitivity of AI in detecting IAs that are smaller than three mm, between 3-5 mm, and larger than five mm are 58.46% (95% CI [0.462-0.698]) and 66.67% (95% CI [0.537-0.775]), 76.68% (95% CI [0.714-0.813]) and 88.93% (95% CI [0.843-0.924]), 77.10% (95% CI [0.720-0.816]) and 94.24% (95% CI [0.906-0.966]), respectively. There was good agreement between radiologists and DSA, between AI and DSA, and between radiologists and AI for identifying the location of IAs, with kappa values all greater than 0.75. The radiologists and AI also showed good consistency in measuring depth, width, height, and maximum diameter, with intraclass correlation coefficients (ICCs) all greater than 0.75, except for the neck width, which had an ICC of 0.492.

Conclusions: The AI software performs well in terms of detecting IAs that are larger than three mm and shows good agreement with radiologists in localizing positions and extracting their morphometric parameters (except for neck width measurements). The AI software has proved to be a reliable adjunct for IA detection and measurement tasks.

背景:影像学的优势提高了颅内动脉瘤(IA)的检出率,但也增加了放射科医生的工作量。再加上视觉疲劳,这种加重的负担增加了漏诊或误诊的风险。与此同时,人工智能(AI)在分析医学图像方面显示出巨大的前景。本研究旨在评估AI软件对IAs的诊断性能,并对其作为未来部署的支持工具的潜力提供初步的单中心验证。方法:在2019年1月至2023年9月期间,纳入452例通过头颈部计算机断层扫描血管造影(CTA)诊断的544例IAs患者,并进行了数字减影血管造影(DSA)。记录了人工智能检测IAs存在、位置和大小的能力。将其结果与DSA进行比较,并评估AI和放射科医生在测量IA大小方面的一致性。结果:AI软件检测IAs的灵敏度为88.97% (95% CI[0.861-0.963]),准确率为75.04% (95% CI[0.715-0.783])。其中,人工智能检测小于3 mm、介于3-5 mm和大于5 mm的IAs的准确率和灵敏度分别为58.46% (95% CI[0.462-0.698])和66.67% (95% CI [0.537-0.775]), 76.68% (95% CI[0.714-0.813])和88.93% (95% CI [0.843-0.924]), 77.10% (95% CI[0.720-0.816])和94.24% (95% CI[0.906-0.966])。放射科医师与DSA、人工智能与DSA以及人工智能在识别IAs位置上的一致性较好,kappa值均大于0.75。放射科医生和人工智能在测量深度、宽度、高度和最大直径方面也表现出良好的一致性,除颈部宽度的ICC为0.492外,其他类内相关系数(ICC)均大于0.75。结论:AI软件在检测大于3mm的IAs方面表现良好,并且在定位位置和提取其形态测量参数(颈部宽度测量除外)方面与放射科医生表现出良好的一致性。人工智能软件已被证明是人工智能检测和测量任务的可靠辅助工具。
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引用次数: 0
Temporal and spatial dynamics of Net Primary Productivity and prediction of wetland carbon sequestration potential on the Tibetan Plateau. 青藏高原湿地净初级生产力时空动态及固碳潜力预测
IF 2.4 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.7717/peerj.20758
Liang Cao, Shi Dong, Yuyan Wang, Xingran Li, Yonghua Zhao, Danni Ma, Zhuoma Pubu, Hongmei Ma, Wei Li, Pengxi Cao

Background: Investigating the carbon sequestration potential of wetlands and the dynamics of net primary productivity (NPP) on the Tibetan Plateau of China enhances understanding of their contributions to global carbon emission reduction and their role in maintaining biodiversity and ecosystem stability. Vegetation NPP is a key indicator of carbon sequestration; however, existing research has largely focused on historical dynamics, with limited studies projecting future trends. This gap impedes proactive conservation and climate mitigation strategies.

Methods: Here, we predicted the spatial distribution of normalized difference vegetation index (NDVI) on the Tibetan Plateau for 2025-2030, employing a backpropagation neural network and Kriging interpolation fitting. We estimated spatial and temporal dynamics of NPP and wetland carbon sequestration potentials during the same period using the Carnegie-Ames-Stanford Approach model. Furthermore, we investigated the effects of land use and climate on NPP.

Results: Key findings were: (1) NDVI distribution was higher in the southeast than in the northwest, with temperature influencing its value. (2) Spatial distribution of NPP on the Tibetan Plateau exhibits a typical landscape pattern of "patch-corridor-matrix." The maximum NPP of vegetation was 1,112.82 gC ⋅ m-2 ⋅ a-1 for 2025-2030. Projections of NPP for 2025-2030 suggest an increase of approximately 50% relative to current levels by 2045, indicating a substantial enhancement of the carbon sink potential over the coming two decades. (3) Carbon sequestration potential of wetlands on the Plateau ranges from 0 to 100 gC ⋅ m-2 ⋅ a-1, with high carbon sink potential concentrated near Palong Tsangpo, the largest tributary of the Yarlung Tsangpo River. (4) Woodland NPP has the highest mean value and rate of change. Furthermore, analysis of 2025 land use data shows that forestland and grassland are the dominant land cover types in the Yunnan, Sichuan, and Southeastern Xizang Sections of the Qinghai-Tibet Plateau. Their high proportions correspond significantly to high regional NDVI values, indicating the spatial heterogeneity of NDVI distribution is driven by land cover changes rather than directional factors. (5) Correlation analysis indicated strong positive correlations between precipitation and solar radiation with NPP. NPP does not increase or decrease with increasing temperature; instead, it tends to increase within suitable temperature ranges.

背景:研究中国青藏高原湿地的固碳潜力和净初级生产力(NPP)动态,有助于了解湿地对全球碳减排的贡献及其在维持生物多样性和生态系统稳定中的作用。植被NPP是碳固存的重要指标;然而,现有的研究主要集中在历史动态上,预测未来趋势的研究有限。这一差距阻碍了积极主动的保护和减缓气候变化战略。方法:采用反向传播神经网络和Kriging插值拟合方法,预测2025-2030年青藏高原归一化植被指数(NDVI)的空间分布。利用卡内基-艾姆斯-斯坦福方法模型估算了同一时期NPP和湿地固碳潜力的时空动态。此外,研究了土地利用和气候对NPP的影响。结果:主要发现:(1)NDVI分布东南部高于西北部,受温度影响;(2)青藏高原NPP空间分布呈现典型的“斑块-廊道-基质”景观格局。2025-2030年植被NPP最大值为112.82 gC⋅m-2⋅a-1。对2025-2030年NPP的预测表明,到2045年,相对于当前水平,NPP将增加约50%,这表明未来20年碳汇潜力将大幅增强。(3)高原湿地碳汇潜力在0 ~ 100 gC⋅m-2⋅a-1之间,高碳汇潜力集中在雅鲁藏布江最大支流巴龙雅鲁藏布江附近。(4)林地NPP均值和变化率最高。2025年土地利用数据分析表明,青藏高原云南、四川和西藏东南部的土地覆盖类型以林地和草地为主。它们的高比例与NDVI的高区域值显著对应,表明NDVI分布的空间异质性主要受土地覆被变化驱动,而非方向性因子。(5)相关分析表明,降水和太阳辐射与NPP呈极显著正相关。NPP不随温度升高而增加或减少;相反,在适当的温度范围内,它倾向于增加。
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引用次数: 0
Time is of the essence: using archived samples in the development of a GT-seq panel to preserve continuity of ongoing genetic monitoring. 时间是至关重要的:在开发GT-seq面板时使用存档样本以保持正在进行的遗传监测的连续性。
IF 2.4 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2026-02-04 eCollection Date: 2026-01-01 DOI: 10.7717/peerj.20726
Guilherme Caeiro-Dias, Megan J Osborne, Thomas F Turner

Genotyping-in-Thousands by sequencing (GT-seq) is a promising tool for genetic monitoring. For the past 25 years, genetic monitoring of Rio Grande silvery minnow (Hybognathus amarus) has been conducted annually by surveying variation at microsatellite loci. This is the first study describing the development of a GT-seq panel using archived samples that maintains the analytical and inferential continuity of long-term genetic monitoring. A total of 2,983 microhaplotypes in 373 individuals were identified using nextRAD-seq from samples spanning 20 years and a conspecific reference genome. Using this data, estimates of genetic diversity and temporal genetic structure across the time-series were used as a baseline to test subsets of loci that effectively tracked those changes. A panel including 250 loci with higher FST across temporal samples and 250 loci selected randomly offered the highest power and was used for GT-seq optimization. A sex-linked marker validated previously was also included for sex assignment. The optimized GT-seq panel included 284 loci. Comparisons of genotypes from those loci obtained for the same samples with nextRAD-seq and GT-seq revealed high genotype accuracy (98.3%). Estimates of genetic diversity and patterns of temporal genetic structure were similar between datasets and accuracy of sex assignment was 100%. The utility of using a conspecific genome for both loci identification and primer design in the face of reduced genetic diversity, and the importance of temporal metrics representative of ongoing genetic monitoring is explored. The strategy used here, effectively preserved the long-term genetic monitoring of the endangered Rio Grande silvery minnow while transitioning to a more efficient and cost-effective marker system.

千分型测序(GT-seq)是一种很有前途的遗传监测工具。在过去的25年里,我们每年都对里约热内卢大银鲦鱼(Hybognathus amarus)进行遗传监测,方法是测量微卫星位点的变异。这是第一个描述使用存档样本开发GT-seq面板的研究,该面板保持了长期遗传监测的分析和推断连续性。利用nexttrade -seq,从20年的样本和同种参考基因组中,共鉴定出373人的2983个微单倍型。利用这些数据,对整个时间序列的遗传多样性和时间遗传结构的估计被用作测试有效跟踪这些变化的基因座子集的基线。包含250个具有较高时间样本FST的位点和随机选择的250个位点的面板提供了最高的功率,并用于GT-seq优化。先前验证的性别连锁标记也包括在性别分配中。优化后的GT-seq面板包含284个位点。用nextrade -seq和GT-seq比较同一样品中获得的基因型,结果显示基因型准确性高(98.3%)。遗传多样性和时间遗传结构模式的估计值在数据集之间相似,性别分配的准确性为100%。在遗传多样性减少的情况下,使用同种基因组进行位点鉴定和引物设计的效用,以及代表正在进行的遗传监测的时间指标的重要性进行了探讨。本研究采用的策略,有效地保留了对濒临灭绝的里约热内卢大银鲦鱼的长期遗传监测,同时过渡到一个更有效和更具成本效益的标记系统。
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