Journal of thermal biology最新文献_第10页

Ecological resilience of the rectal microbiome to environmental stressors in Hulunbuir grazing sheep: response to feed restriction and extreme cold challenge 呼伦贝尔放牧羊直肠微生物群对环境胁迫的生态恢复力：对限饲和极寒挑战的响应

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology

Pub Date : 2025-12-01 Epub Date: 2025-12-05 DOI: 10.1016/j.jtherbio.2025.104351

Qi Huang , Nazir Ahmad Khan , Shaoxun Tang , Chuanshe Zhou , Zhixiong He , Zhiliang Tan , Yong Liu

The gut microbiota is essential for helping animals to adapt to food shortages and extreme environments. In China's Hulunbuir region, local grazing sheep endure harsh winters characterized by intense cold and limited food supply. Uncovering the adaptive mechanisms that underpin their resilience is essential for improving their productivity, breeding practices, and management strategies. This research investigated the effects of feed restriction (set at 40 % of ad libitum intake) and extreme cold stress (temperature-humidity index set at 22.27) on the dynamics of gut microbiota in Hulunbuir sheep. We employed 16S rRNA gene sequencing to investigate alterations in rectal microbial diversity, community composition, and functional pathways in response to these stressors. Our findings revealed a significant reduction in bacterial diversity and microbial community structure in response to both stressors (P < 0.05), with cold stress exerting a more pronounced impact than feed restriction. Several key bacterial genera, including Akkermansia, Christensenellaceae, Monoglobus, Bacteroides, Alistipes, and Solibacillus, were identified as major contributors to the adaptive microbiota-drives responses of Hulunbuir sheep under environmental stress. A Spearman correlation analysis revealed strong associations between these genera and essential functional pathways such as fat digestion and absorption, quorum sensing, and mineral uptake, all of which were differentially regulated in response to stress (|r| > 0.6, P_adj < 0.05). These findings offer novel insights into how the gut microbiota in Hulunbuir sheep supports physiological adaptation to extreme cold and nutritional stress, laying a robust foundation for creating microbiota-targeted strategies to enhance resilience, promote animal health, and improve productivity of grazing ruminants in harsh winter environments.

肠道菌群对帮助动物适应食物短缺和极端环境至关重要。在中国呼伦贝尔地区，当地放牧的羊忍受着严寒和食物供应有限的严冬。揭示支撑其复原力的适应机制对于提高其生产力、育种做法和管理战略至关重要。本试验研究了限饲（自由采食量的40%）和极冷应激（温湿度指数22.27）对呼伦贝尔羊肠道菌群动态的影响。我们采用16S rRNA基因测序来研究直肠微生物多样性、群落组成和功能途径在这些应激源下的变化。我们的研究结果显示，在这两种应激条件下，细菌多样性和微生物群落结构显著减少（P < 0.05），其中冷应激的影响比饲料限制更为明显。研究结果表明，呼伦贝尔羊在环境胁迫下，Akkermansia、Christensenellaceae、Monoglobus、Bacteroides、Alistipes和Solibacillus等关键菌属对环境胁迫下的适应性菌群驱动反应起主要作用。Spearman相关分析显示，这些属与脂肪消化和吸收、群体感应和矿物质摄取等基本功能途径之间存在很强的相关性，所有这些途径都在应激反应中受到差异调节（|r| > 0.6, Padj < 0.05）。这些发现为呼伦贝尔羊肠道微生物群如何支持对极端寒冷和营养应激的生理适应提供了新的见解，为建立针对微生物群的策略奠定了坚实的基础，以增强适应能力，促进动物健康，提高放牧反刍动物在恶劣冬季环境中的生产力。

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引用次数: 0

Exposure to high temperatures is fatal for eggs and suppresses growth in a false widow spider, Steatoda grossa 暴露在高温下对卵来说是致命的，并且会抑制假寡妇蜘蛛（Steatoda grossa）的生长。

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology

Pub Date : 2025-12-01 Epub Date: 2025-11-05 DOI: 10.1016/j.jtherbio.2025.104323

Yuting Dong , Jeffrey A. Harvey , Melissah Rowe , Rieta Gols

Ectothermic organisms are highly sensitive to ambient temperature, and exposure to extreme heat can induce a range of lethal and sublethal effects. Spiders are abundant and ubiquitous arthropod predators in most terrestrial ecosystems and studying their responses to different temperature regimes provides valuable insights into effects of temperature on this important group of organisms. Here, we exposed the false widow spider (Steatoda grossa), either as eggs or spiderlings to different temperature regimes and monitored their survival and development. The regimes were set at 22/12 °C (day/night), 27/17 °C, 32/22 °C, or were simulated as heatwaves in which the days at 32/22 °C were restricted. Egg and spiderling survival decreased with higher temperature exposure. The growth trajectories of female spiderlings exposed to thermal stress after hatching were stronger affected by the various regimes than those of males. Only the males, which develop much faster than females, reached adulthood and those reared at lower temperatures grew slower but attained significantly more adult body mass. Male spiderlings and, to a lesser extent, eggs and female spiderlings, were able to withstand transient exposure to 32 °C during simulated heatwaves. Our study shows that eggs and young spiderlings are highly sensitive to high temperatures and that female spiderlings are more sensitive than males. Female spiders of this species are mostly sedentary and spend their entire lives in relatively small webs, whereas adult males wander in search of females. Given the higher sensitivity of females and eggs to high temperatures, we argue that females are under strong selection to build webs and place egg sacs at sites where temperatures exceeding 30 °C are avoided.

恒温生物对环境温度高度敏感，暴露在极端高温下会引起一系列致命和亚致命的影响。蜘蛛是大多数陆地生态系统中数量众多且无处不在的节肢动物捕食者，研究它们对不同温度制度的反应为了解温度对这一重要生物群体的影响提供了有价值的见解。本研究将假寡妇蜘蛛（Steatoda grossa）卵或幼蛛暴露在不同的温度环境中，观察其生存和发育情况。这些状态被设定为22/12°C（白天/晚上）、27/17°C、32/22°C，或者被模拟为热浪，其中32/22°C的天数受到限制。卵和蜘蛛存活率随温度升高而降低。孵化后暴露于热胁迫下的雌蛛的生长轨迹受各种制度的影响大于雄蛛。只有发育速度比雌性快得多的雄性达到了成年期，而在较低温度下饲养的雄性生长较慢，但获得的成年体重明显高于雌性。在模拟的热浪中，雄性蜘蛛以及较小程度上的卵和雌性蜘蛛能够承受32°C的短暂暴露。我们的研究表明，卵和幼蛛对高温非常敏感，雌性蜘蛛比雄性蜘蛛更敏感。这种蜘蛛的雌性大多是久坐不动的，一生都在相对较小的网中度过，而成年雄性则四处游荡寻找雌性。考虑到雌性和卵对高温的更高敏感性，我们认为雌性在强烈的选择下会在避免温度超过30°C的地方筑巢和产卵。

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引用次数: 0

Diagnosis of superficial ailments using infrared thermal imaging and CapsNet 应用红外热成像和CapsNet诊断浅表疾病。

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology

Pub Date : 2025-12-01 Epub Date: 2025-11-07 DOI: 10.1016/j.jtherbio.2025.104325

Bhaskar Pandey , Jaspreet Singh , Deepak Joshi , Shiv Ram Dubey , Ajat Shatru Arora

Infrared thermal imaging has been widely recognized as a reliable tool for detecting superficial diseases by analyzing temperature variations. However, external factors can influence regional temperature, introducing potential errors in diagnosis. This study investigates the integration of a computer vision-based classification algorithm with thermal imaging to enhance disease classification and diagnosis. Specifically, the research explores the application of Capsule Networks (CapsNet) for diagnosing conditions with skin-manifesting symptoms, such as breast cancer, pressure ulcers, and sinusitis. The proposed approach involves processing thermal images as conventional images using a computer vision-based classification algorithm. CapsNet is employed as the primary deep learning model for disease classification. The performance of CapsNet is evaluated and compared against benchmark models to assess its effectiveness in diagnosing breast cancer, pressure ulcers, and sinusitis. Experimental results demonstrate that CapsNet consistently outperforms traditional models across all evaluated conditions. The model achieves an accuracy of 99.91 % in breast cancer detection, 92.12 % in pressure ulcer staging, and 99.10 % and 98.93 % in multiclass and binary sinusitis classification, respectively. The integration of thermal imaging with CapsNet presents a promising approach for diagnosing superficial diseases. The high accuracy rates across different medical conditions highlight the potential of this method in medical imaging applications. These findings suggest that thermal imaging, when combined with advanced deep learning techniques, should be more widely adopted in medical diagnostics.

红外热成像已被广泛认为是通过分析温度变化来检测浅表疾病的可靠工具。然而，外部因素可能会影响区域温度，从而导致潜在的诊断错误。本研究将基于计算机视觉的分类算法与热成像相结合，以增强疾病的分类和诊断。具体而言，该研究探讨了胶囊网络（CapsNet）在诊断具有皮肤症状的疾病方面的应用，如乳腺癌、压疮和鼻窦炎。所提出的方法包括使用基于计算机视觉的分类算法将热图像作为常规图像处理。采用CapsNet作为疾病分类的主要深度学习模型。对CapsNet的性能进行评估，并与基准模型进行比较，以评估其在诊断乳腺癌、压疮和鼻窦炎方面的有效性。实验结果表明，CapsNet在所有评估条件下都优于传统模型。该模型对乳腺癌的检测准确率为99.91%，对压疮分期准确率为92.12%，对多分型和二元鼻窦炎分期准确率分别为99.10%和98.93%。热成像与CapsNet的结合为浅表疾病的诊断提供了一种很有前途的方法。在不同医疗条件下的高准确率突出了该方法在医学成像应用中的潜力。这些发现表明，热成像与先进的深度学习技术相结合，应该更广泛地应用于医学诊断。

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引用次数: 0

Comparison of respiratory responses to exercise under different heat-stressful environments between oral contraceptive and naturally menstruating ovulating female athletes 不同热应激环境下口服避孕药与自然月经排卵期女运动员运动呼吸反应的比较。

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology

Pub Date : 2025-12-01 Epub Date: 2025-11-17 DOI: 10.1016/j.jtherbio.2025.104335

Nanako Hayashi , Toby Mündel , Tze-Huan Lei , Claire Badenhorst

The present study conducted a secondary analysis of previous data (Lei et al., 2017, 2019) to compare exercise-induced respiratory responses under heat stress between the early follicular (EF)/quasi-EF and mid-luteal (ML)/quasi-ML phases in naturally menstruating and oral contraceptive pill (OCP)-using female athletes. Additionally, the study aimed to examine the associations between respiratory responses, thermoregulation, and hormonal profiles within each group. Sixteen endurance-trained female athletes participated: eight with a natural menstrual cycle (NM group) and eight using OCP (OCP group). Each participant completed four trials, comprising fixed-intensity cycling (at 125 and 150 W) followed by a 30-min self-paced cycling session (with maximal effort; OCP ≈144–151 W, NM ≈138–148W). Trials were conducted during the EF/quasi-EF and the ML/quasi-ML phases under two WBGT-matched heat-stress environments: hot, dry (≈34 °C, ≈41 % RH) and warm, humid (≈29 °C, ≈81 % RH). Respiratory parameters did not differ significantly between the menstrual/OCP phases. However, during both exercises in the heat, the OCP group exhibited a significantly lower percentage of maximal oxygen uptake (

\dot{V}

O₂max) and oxygen uptake compared to the NM group, despite no significant differences in

\dot{V}

O₂max or workload between the groups. In the OCP group, changes in mean body temperature during fixed-intensity exercise were associated with the ventilatory equivalent for oxygen uptake and tidal volume. Endogenous progesterone concentration was negatively correlated with changes in minute ventilation. These results suggested that external factors, such as exogenous hormones and environmental heat stress, may have a greater influence on respiratory responses during exercise in female athletes than endogenous hormonal fluctuations.

本研究对之前的数据（Lei et al., 2017,2019）进行了二次分析，比较了自然月经和口服避孕药（OCP）的女运动员在卵泡早期(EF)/准EF期和黄体中期(ML)/准ML期在热应激下运动诱导的呼吸反应。此外，该研究旨在检查每组呼吸反应、体温调节和激素谱之间的关系。16名耐力训练的女运动员：8名自然月经组（NM组）和8名使用OCP组（OCP组）。每个参与者完成四项试验，包括固定强度的骑行（125和150瓦），然后是30分钟的自定节奏骑行（最大努力；OCP≈144-151瓦，NM≈138-148W）。试验在两个wbgt匹配的热应激环境下进行：热、干（≈34°C,≈41% RH）和热、湿（≈29°C,≈81% RH）。月经期和OCP期的呼吸参数无显著差异。然而，在高温下进行的两项运动中，OCP组的最大摄氧量（V˙O2max）和摄氧量的百分比明显低于NM组，尽管两组之间的V˙O2max或工作量没有显著差异。在OCP组中，固定强度运动期间平均体温的变化与呼吸当量摄氧量和潮气量有关。内源性孕酮浓度与分气量变化呈负相关。这些结果表明，外源性激素和环境热应激等外部因素可能比内源性激素波动对女性运动员运动期间呼吸反应的影响更大。

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引用次数: 0

Influence of temperature on early life stages of silver pompano, Trachinotus blochii 温度对银鲳鱼生命早期阶段的影响。

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology

Pub Date : 2025-12-01 Epub Date: 2025-11-12 DOI: 10.1016/j.jtherbio.2025.104328

Krishna Sukumaran , P.S. Pooja , Ambarish P. Gop , Anuraj Anirudhan , G. Rathi Bhuvaneswari , Archana Satheesh , Liyakhath Ali , Muhammed Arshadudeen , S. Nisha , A.P. Dineshbabu , B. Santhosh , V.V.R. Suresh , A. Gopalakrishnan , Grinson George

Silver pompano, Trachinotus blochii is an important mariculture species in India and Southeast Asia. Understanding the influence of temperature, the most critical environmental factor on the early life stages is crucial for identifying the optimal rearing temperature for its hatchery production and assessing the species resilience to climate change. This study evaluated embryogenesis, hatching, yolk-sac larval development and survival at four environmental temperatures, 24 ± 0.5 °C, 27 ± 0.5 °C, 30 ± 0.5 °C and 33 ± 0.5 °C in thermostatically controlled 50-L tanks (in triplicates). It was found that higher temperatures significantly (P < 0.05) accelerated embryogenesis and the shortest developmental time was recorded at 33 °C (14.5 ± 2.6 h). A significantly higher hatching rate (P < 0.05) was recorded at 30 °C, this was accompanied by a significantly (P < 0.05) reduced hatching duration at the higher temperatures. The larvae that hatched at 24 °C had highest total length whereas the total larval length recorded at onset of exogenous feeding was significantly (P < 0.05) higher at 33 °C. The larval activity, utilisation of endogenous energy reserves (yolk sac volume and oil globule) was also significantly (P < 0.05) higher at 30 °C and 33 °C. Although some embryonic and larval development parameters were comparable at 30 °C and 33 °C, there was a significant incidence of morphological abnormalities (10.00 ± 4.08 %), reduction in hatching % and survival of yolk-sac larvae at 33 °C. These results indicate that 30 ± 0.5 °C is the optimal thermal environment for rearing of early stages of silver pompano as it minimises developmental abnormalities, optimises survival and enhances the efficiency of its hatchery production.

银鲳（Trachinotus blochii）是印度和东南亚重要的海水养殖品种。了解温度这一最关键的环境因子对其生命早期阶段的影响，对于确定其孵化场生产的最佳饲养温度和评估物种对气候变化的适应能力至关重要。本研究在恒温控制的50-L培养皿中（3个），分别在24±0.5°C、27±0.5°C、30±0.5°C和33±0.5°C四种环境温度下，评估了胚胎发生、孵化、卵囊幼虫的发育和存活率。结果表明，较高的温度显著（P < 0.05）促进了胚胎的发生，33℃时发育时间最短（14.5±2.6 h）。30°C条件下的孵化率显著高于（P < 0.05），高温条件下的孵化时间显著缩短（P < 0.05）。在24°C时孵化的幼虫总长度最高，而在33°C时孵化的幼虫总长度显著（P < 0.05）高于24°C。在30°C和33°C条件下，幼虫活力、内源能量储备（卵黄囊体积和油球）利用率也显著（P < 0.05）提高。虽然在30°C和33°C下，一些胚胎和幼虫的发育参数相当，但在33°C下，卵黄囊幼虫的形态异常发生率显著（10.00±4.08%），孵化率和存活率降低。以上结果表明，30±0.5°C是早期鲳鱼养殖的最佳温度环境，可以最大限度地减少发育异常，优化成活率，提高孵化场生产效率。

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引用次数: 0

Transcriptomics at the thermal limits of an urban introduced lizard 在城市引进的蜥蜴的热极限转录组学

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology

Pub Date : 2025-12-01 Epub Date: 2025-11-05 DOI: 10.1016/j.jtherbio.2025.104305

Samantha S. Fontaine, Brian K. Trevelline

Rapid changes in gene expression can result in physiological plasticity that assists animals in coping with environmental stressors. Increased capacity for physiological plasticity may then facilitate adaptation to stressful habitats like urban heat islands or invasion into novel ranges. Currently, temperature stress is a leading threat to organisms, especially ectotherms. While exposure to changing temperatures is known to shift gene expression patterns in ectothermic animals, many studies are conducted after lengthy acclimation times. However, exposure to thermal stress in nature can occur rapidly. We assessed the capacity for gene expression plasticity in response to a brief exposure to extreme thermal stress in an urban, introduced species, the common wall lizard (Podarcis muralis). Lizards were ramped to their critical thermal maximum (CT_max) or minimum (CT_min) followed by rapid recovery. We used RNA-sequencing to compare the transcriptomes of lizards exposed to CT_max, CT_min, or control conditions using heart, liver, and large intestine tissue. Exposure to heat stress induced a much stronger gene expression response across tissues than cold exposure. In response to heat, there was systemic upregulation of heat shock proteins and stress response pathways. Heat also induced changes in transcription, translation, and metabolic processes but these effects were more tissue specific. Although fewer gene expression changes were observed in response to cold, some genes were upregulated that could be beneficial under cooling stress. Our data suggests gene expression plasticity could facilitate range expansion in this species, but more work is needed to assess the transcriptomic response to temperature stress in nature.

基因表达的快速变化可以导致生理可塑性，帮助动物应对环境压力。生理可塑性的增强可能会促进对压力栖息地的适应，如城市热岛或入侵到新的范围。目前，温度胁迫是对生物，尤其是变温动物的主要威胁。虽然已知暴露在不断变化的温度下会改变恒温动物的基因表达模式，但许多研究都是在漫长的适应时间之后进行的。然而，在自然界中暴露于热应力会迅速发生。我们评估了一种城市引进物种——普通壁虎（Podarcis muralis）在短暂暴露于极端热应力下的基因表达可塑性。蜥蜴逐渐达到临界热最大值（CTmax）或最小值（CTmin），然后快速恢复。我们使用rna测序来比较暴露于CTmax、CTmin或使用心脏、肝脏和大肠组织的对照条件下的蜥蜴的转录组。暴露于热应激诱导的跨组织基因表达反应比冷暴露强得多。在对热的反应中，热休克蛋白和应激反应途径出现全身性上调。高温也会引起转录、翻译和代谢过程的变化，但这些影响更具组织特异性。虽然在低温胁迫下观察到的基因表达变化较少，但在低温胁迫下，一些基因的表达上调可能是有益的。我们的数据表明，基因表达的可塑性可以促进该物种的范围扩大，但需要更多的工作来评估自然界对温度胁迫的转录组反应。

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引用次数: 0

The effect of different levels of heat stress on the behaviour of cows at different stage of lactation 不同热应激水平对奶牛泌乳不同阶段行为的影响

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology

Pub Date : 2025-12-01 Epub Date: 2025-11-14 DOI: 10.1016/j.jtherbio.2025.104334

Wissem Baccouri , George Wanjala , Violetta Tóth , István Komlósi , Edit Mikó

Rising temperatures and humidity increasingly challenge the welfare and productivity of dairy cows worldwide. Behavioural changes are among the earliest responses to heat stress, reflecting animals’ efforts to reduce heat load. This study investigated how heat stress and lactation stage interact to influence the behaviour of Holstein Friesian cows. Data were collected from 60 cows between 20 June and July 20, 2024, with 1680 records of eating, ruminating, and inactivity times. Cows were grouped by lactation stage: early (days in milk, (DIM) ≤ 60), mid (DIM 61–180), and late (DIM >180). Behaviour was assessed under moderate (temperature–humidity index, (THI) 72–76) and severe heat stress (THI ≥77). A significant interaction was observed between the level of heat stress and lactation stage. Under severe heat stress, eating time declined significantly across all lactation groups, with the largest reduction observed in late-lactation cows. Ruminating time decreased significantly only in late-lactation cows, while remaining relatively stable in early and mid-lactation. Conversely, inactivity time increased in all groups, with the duration of inactivity rising as lactation advanced. These results suggest that behavioural responses to heat stress intensify with advancing lactation. In conclusion, late-lactation cows are more susceptible to heat stress than those in earlier stages, indicating a need for targeted mitigation strategies to support cow welfare and productivity.

不断上升的温度和湿度日益挑战着全世界奶牛的福利和生产力。行为变化是对热应激最早的反应之一，反映了动物减少热负荷的努力。本研究探讨了热应激和泌乳期相互作用对荷斯坦奶牛行为的影响。研究人员在2024年6月20日至7月20日期间收集了60头奶牛的数据，记录了1680次进食、反刍和不活动的时间。奶牛按泌乳阶段分组：早期（泌乳天数，DIM≤60）、中期（DIM 61 ~ 180）和晚期（DIM >180）。在中度（温度-湿度指数，（THI） 72-76）和重度热应激（THI≥77）下评估行为。热应激水平与哺乳期之间存在显著的相互作用。在严重热应激下，所有泌乳组的进食时间都显著减少，泌乳后期奶牛的减少幅度最大。反刍时间仅在泌乳后期显著减少，在泌乳早期和中期保持相对稳定。相反，所有组的不活动时间都增加了，随着哺乳的进展，不活动的持续时间也增加了。这些结果表明，对热应激的行为反应随着泌乳的提前而增强。综上所述，泌乳后期的奶牛比泌乳早期的奶牛更容易受到热应激的影响，这表明需要有针对性的缓解策略来支持奶牛的福利和生产力。

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引用次数: 0

The effect of local cryostimulation on osteogenesis during implantation of xenogenic bone matrix: An experimental study 异种骨基质植入过程中局部冷冻刺激对成骨作用的实验研究

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology

Pub Date : 2025-12-01 Epub Date: 2025-11-05 DOI: 10.1016/j.jtherbio.2025.104322

A.V. Shakurov , Y.S. Lukina , L.L. Bionyshev-Abramov , D.V. Smolentsev , N.B. Serejnikova , A.V. Volkov , S.A. Rodionov , A.S. Skriabin

Intensive skin cooling triggers a physiological response that has therapeutic potential for bone injury treatment. However, in the cases of critical-sized bone defects, cryostimulation alone is insufficient. Then this study aimed to evaluate the rate of bone tissue regeneration in the case of the combination of cryostimulation and xenogenic bone matrix implantation to test the hypothesis of healing acceleration. A model of a critical-size defect (2.7 mm in diameter) in the cortical bone of the femoral diaphysis was drilled out in Wistar rats. The defects were filled with xenogenic bone matrix. After cryostimulation carried out twice per week over a 30-day period. Bone regeneration was assessed with micro-CT, histological, immunohistochemical and fluorescence microscopy tests. Micro-CT and histological evaluations revealed enhanced bone regeneration with structural features typical of compact bone, including Haversian canal formation and the presence of cement lines. Morphometric analysis demonstrated a significantly greater relative area of bone regeneration in the experimental group. Immunohistochemistry revealed an increased alkaline phosphatase activity, indicating elevated osteoblastic activity. Fluorescence microscopy confirmed a statistically significant moderate increase (by 10 %) in bone tissue growth rate. Overall, the combined application of cryostimulation and xenogenic bone matrix implantation resulted in complete defect filling and near-complete mineralization of the newly formed bone. These findings demonstrate that cryostimulation enhances bone regeneration when filled xenogenic bone matrix. It offering a promising approach for the treatment of critical-sized bone defects. The results may contribute to the design of novel therapeutic protocols for bone healing, particularly in complicated clinical cases.

强烈的皮肤冷却触发的生理反应，具有治疗骨损伤治疗的潜力。然而，对于临界大小的骨缺损，单靠冷冻刺激是不够的。本研究旨在评估冷冻刺激与异种骨基质植入联合使用情况下的骨组织再生率，以验证加速愈合的假设。在Wistar大鼠股骨骨干皮质骨中钻出一个临界尺寸（直径2.7 mm）的缺损模型。用异种骨基质填充缺损。每周进行两次冷冻刺激，持续30天。采用显微ct、组织学、免疫组织化学和荧光显微镜检查评估骨再生情况。显微ct和组织学评估显示骨再生增强，具有致密骨的典型结构特征，包括哈弗氏管形成和水泥线的存在。形态计量学分析显示实验组骨再生的相对面积显著增大。免疫组化显示碱性磷酸酶活性升高，表明成骨细胞活性升高。荧光显微镜证实骨组织生长速率有统计学意义的适度增加（10%）。总的来说，冷冻刺激和异种骨基质植入的联合应用导致缺损完全填充和新形成的骨近乎完全矿化。这些结果表明，当填充异种骨基质时，冷冻刺激可以促进骨再生。它为治疗临界大小的骨缺损提供了一种很有前途的方法。这些结果可能有助于设计新的骨愈合治疗方案，特别是在复杂的临床病例中。

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引用次数: 0

Evaluation of the significant association between Climatic Variables and Malaria Cases in the Upper River Region of the Gambia 评估冈比亚上游河流地区气候变量与疟疾病例之间的重要关联

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology

Pub Date : 2025-12-01 Epub Date: 2025-12-04 DOI: 10.1016/j.jtherbio.2025.104350

Ugochinyere Agatha Okafor , Sidat Yaffa , Umberto D'Alessandro , Vincent Nduka Ojeh

Malaria has been a public health concern for many years in The Gambia, with reported increases in mortality and morbidity. Despite scaling down interventions, the incidence of malaria in the Upper River region persists and may be linked to the area's climatic conditions. The study examines how climatic variables correlate with malaria incidence. Data on monthly malaria cases for individuals under five and over five were obtained from the malaria department for 12 months, from 2011 to 2022, along with corresponding meteorological data—maximum and minimum temperatures, rainfall, and relative humidity—collected from the Water Resources Department in Banjul, The Gambia. A Kendall rank correlation assessed the strength of the associations, and a negative binomial model evaluated the risk rates for each parameter. The odds of incidence of malaria increase by 3 %–4 % in <5 years and 6 %–9 % in >5 years with relative humidity at a >1 % significance level, while decreasing by 20 %–14 % in <5 years and by 21 %–15 % in >5 years with maximum temperature at the same significance level, in unadjusted and adjusted model respectively. The results implicated relative humidity to be a major influencing factor of malaria incidence in the studied region. Therefore, more effective malaria control and prevention programs could be aligned with key climatic indicators to enhance impact and reduce malaria cases in the Upper River Region of The Gambia.

疟疾多年来一直是冈比亚的一个公共卫生问题，据报告死亡率和发病率都在上升。尽管减少了干预措施，上游地区的疟疾发病率仍然存在，这可能与该地区的气候条件有关。这项研究考察了气候变量与疟疾发病率之间的关系。从2011年至2022年的12个月内，从疟疾部门获得了5岁以下和5岁以上儿童每月疟疾病例的数据，以及从冈比亚班珠尔水资源部门收集的相应气象数据——最高和最低温度、降雨量和相对湿度。肯德尔秩相关评估关联的强度，负二项模型评估每个参数的风险率。在未调整和调整的模型中，相对湿度在1%显著水平下，5年和5年疟疾发病率分别增加3% ~ 4%和6% ~ 9%，而在相同显著水平下，最高温度在5年和5年分别减少20% ~ 14%和21% ~ 15%。结果表明，相对湿度是研究区域疟疾发病的主要影响因素。因此，更有效的疟疾控制和预防方案可以与关键气候指标相结合，以提高冈比亚上游地区的影响并减少疟疾病例。

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引用次数: 0

Corrigendum to “Agreement between box- and ellipse-shaped software-derived regions of interest in the assessment of exercise-related skin vasomotor adjustments using thermography” [J. Therm. Biol. 131 (July 2025) 104181] “使用热成像技术评估运动相关皮肤血管舒缩调节时，盒形和椭圆形软件衍生兴趣区域之间的一致性”的更正[J]。小卡。生物学报。131 (July 2025) 104181]。

IF 2.9 2区生物学 Q2 BIOLOGY

Journal of thermal biology

Pub Date : 2025-12-01 Epub Date: 2025-11-07 DOI: 10.1016/j.jtherbio.2025.104312

Andrea Fallas-Campos , Carlos D. Gómez-Carmona , Damiano Formenti , Braulio Sánchez-Ureña , Daniel Rojas-Valverde

引用次数: 0