Meriem Ayadh, Alexandre Bergheau, Christian Dorado Cortez, Julie Chauvel Picard, Martina D'Onghia, Elisa Cinotti, Jean-Luc Perrot, Hassan Zahouani
{"title":"Viscoelastic Properties of Normal Skin and Basal Cell Carcinoma Evaluated by Non-Contact Palpation.","authors":"Meriem Ayadh, Alexandre Bergheau, Christian Dorado Cortez, Julie Chauvel Picard, Martina D'Onghia, Elisa Cinotti, Jean-Luc Perrot, Hassan Zahouani","doi":"10.1002/jbio.70306","DOIUrl":"10.1002/jbio.70306","url":null,"abstract":"<p><p>This study provides a large-scale clinical validation of a non-invasive method to characterize the mechanical properties of tumoral and non-tumoral human skin, aiding dermatological diagnosis and establishing a database for future research. The non-contact UNDERSKIN device employs Fourier transform calculations to analyze surface wave dispersion generated by a focused airflow, via a skin-specific inversion model combined with a viscoelastic model. This digital palpation technology provides detailed insight into subsurface particle motion, revealing new mechanical responses of basal cell carcinomas (BCC). Conducted ex vivo on over 160 BCC and 40 healthy skin specimens, the results quantify the viscoelastic behavior of each skin layer. Although dermatologists can assess tissue firmness through palpation, they currently cannot objectively quantify it or determine its origins. This technique provides that missing quantification, linking tactile perception to specific biomechanical properties. By measuring where firmness originates within skin layers, this work offers valuable support for improving diagnosis, prognosis, treatment planning, surgical decisions, and the advancement of teledermatology applications.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":"19 6","pages":"e70306"},"PeriodicalIF":2.3,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148240844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yushi Yang, Danfei Huang, Yi Xie, Lijia Qiu, Jiaxuan Yan, Ziyang Liu
{"title":"3D Swin Transformer With Multi-Scale Dilated Convolution for White Blood Cell Hyperspectral Image Classification.","authors":"Yushi Yang, Danfei Huang, Yi Xie, Lijia Qiu, Jiaxuan Yan, Ziyang Liu","doi":"10.1002/jbio.70280","DOIUrl":"10.1002/jbio.70280","url":null,"abstract":"<p><p>White blood cell (WBC) classification plays a crucial role in clinical diagnosis. However, traditional microscopic examination and existing deep learning methods primarily focus on spatial structures, resulting in the insufficient utilization of spectral information. In this study, we apply hyperspectral imaging technology and propose a 3D Swin Transformer network (SwinMDC) based on multi-scale dilated convolutions for WBC hyperspectral image classification. The network employs a 3D multi-scale dilated convolution feature extractor as its initial embedding layer, thereby enhancing low-level representations and alleviating receptive field limitations. By integrating a 3D window-based attention mechanism, the network constructs a hierarchical Transformer encoder to capture long-range dependencies. On a three-class white blood cell microscopic hyperspectral dataset, SwinMDC achieved an overall classification accuracy of 99.07%, demonstrating its potential value for clinical white blood cell analysis.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":"19 5","pages":"e70280"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147978186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ping Si, Ni He, Jiabiao Liu, Qingyun Wang, Jingchao Lin, Cuixia Dai
{"title":"Investigation of the Therapeutic Effects of Transcorneal Electrical Stimulation on Alzheimer's Disease Using Optical Coherence Tomography.","authors":"Ping Si, Ni He, Jiabiao Liu, Qingyun Wang, Jingchao Lin, Cuixia Dai","doi":"10.1002/jbio.70274","DOIUrl":"10.1002/jbio.70274","url":null,"abstract":"<p><p>Alzheimer's disease (AD) is a progressive neurodegenerative disorder lacking reliable noninvasive indicators for early diagnosis. Transcorneal electrical stimulation (TES) has emerged as a noninvasive neuromodulation approach, yet its effects on AD-related pathology and eye-brain interactions remain unclear. In this study, TES was applied to wild-type (WT) and AD mice, followed by longitudinal optical coherence tomography (OCT) and OCT angiography (OCTA) imaging of the retina and cerebral cortex over a 30-day period. Quantitative imaging metrics, together with histologically assessed amyloid-β (Aβ) plaque deposition, were used to assess TES-associated structural and neurovascular changes. In addition to retinal thickness, retinal vascular density (VD) was evaluated as an objective, noninvasive imaging metric associated with AD-related neurovascular alterations. These findings demonstrate the utility of longitudinal OCT/OCTA imaging for investigating intervention-associated retinal and cerebral neurovascular changes along the eye-brain axis.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":"19 5","pages":"e70274"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147847927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiaochen Meng, Zeqi Su, Yilin Liang, Chongyang Wang, Jiawei Ma, Fan Fan, Jiang Zhu
{"title":"In Vivo Mapping of Vasculature and Mechanics for Skin Tumor Using Optical Coherence Tomography.","authors":"Xiaochen Meng, Zeqi Su, Yilin Liang, Chongyang Wang, Jiawei Ma, Fan Fan, Jiang Zhu","doi":"10.1002/jbio.70279","DOIUrl":"10.1002/jbio.70279","url":null,"abstract":"<p><p>Optical coherence tomography (OCT) is widely used in dermatology, but conventional OCT-based angiography and elastography are performed independently, limiting real-time assessment of vascular and mechanical properties within the same region. As microvascular and biomechanical changes often occur simultaneously during inflammation, fibrosis, and tumor progression, separate measurements may introduce spatial mismatch and reduce diagnostic accuracy. Here, we present a multifunctional OCT approach that enables the simultaneous acquisition of structural and elasticity information within a single scan, utilizing a streamlined sample arm and a customized protocol. Vascular networks are extracted using an intensity-based Doppler variance algorithm, while elasticity maps are generated through phase-based strain analysis. The method was validated using a bilayer tissue-mimicking phantom and tumor-bearing mouse skin, demonstrating simultaneous mapping of vascular and elastic features within the same region. This compact system offers an efficient tool for non-invasive skin assessment, with strong potential for enhancing diagnostic accuracy and functional evaluation.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":"19 5","pages":"e70279"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147876949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Julia Stolyar, Margaret Kabakova, Paras Patel, Julie Saadia-Hazkour, Evan Austin, Jared Jagdeo
{"title":"Superior Induction of Apoptosis by Blue Light Compared to Red Light Photodynamic Therapy in Cutaneous Squamous Cell Carcinoma Keratinocytes.","authors":"Julia Stolyar, Margaret Kabakova, Paras Patel, Julie Saadia-Hazkour, Evan Austin, Jared Jagdeo","doi":"10.1002/jbio.70272","DOIUrl":"10.1002/jbio.70272","url":null,"abstract":"<p><p>This study compared apoptosis induction in squamous cell carcinoma keratinocytes following exposure to 5-aminolevulinic acid combined with either blue light (417 ± 5 nm) or red light (635 ± 5 nm) photodynamic therapy, with apoptotic activity quantified via levels of Annexin V expression. Our results demonstrated that blue light induces superior levels of apoptosis in squamous cell carcinoma keratinocytes compared to red light at the parameters tested. Both wavelengths demonstrate additional dose- and temperature-dependent effects across two squamous cell carcinoma cell lines. These conclusions had significant implications for the clinical selection of a light source in combination with 5-aminolevulinic acid photodynamic therapy in the treatment of actinic keratosis and early squamous cell carcinoma lesions.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":"19 5","pages":"e70272"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13176894/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147944187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Esther Angelica Luiz Ferreira, Lucas Pereira Liberal, Antonio Eduardo de Aquino Junior, Rodrigo Bezerra de Menezes Reiff, Fernanda Mansano Carbinatto, Ricardo Patrezi Zanatta, Matheus Henrique Camargo Antonio, Noahn Gabriel Silva Pereira, Maycon Rodrigo Sarracini, Vanderlei Salvador Bagnato
{"title":"Combined Low-Level Laser and Ultrasound Therapy for Growing Pains in Children Aged Four to Twelve Years: A Pilot Study.","authors":"Esther Angelica Luiz Ferreira, Lucas Pereira Liberal, Antonio Eduardo de Aquino Junior, Rodrigo Bezerra de Menezes Reiff, Fernanda Mansano Carbinatto, Ricardo Patrezi Zanatta, Matheus Henrique Camargo Antonio, Noahn Gabriel Silva Pereira, Maycon Rodrigo Sarracini, Vanderlei Salvador Bagnato","doi":"10.1002/jbio.70275","DOIUrl":"10.1002/jbio.70275","url":null,"abstract":"<p><p>Growing pains are a frequent form of musculoskeletal pain in children, with an uncertain etiology and currently limited therapeutic options. Considering the need for non-pharmacological approaches, the potential of low-level laser therapy combined with ultrasonic therapy stands out as a possible therapeutic technique for this condition. The objective of this study was to analyze the safety and efficacy of this treatment in children diagnosed with growing pains in order to justify the development of further research on the same topic. After confirmation of the diagnosis, participants were randomized into a treatment group, treated with the laser and ultrasound-emitting equipment, and a placebo group. Pain was assessed at three time points and recorded in a diary for 30 days. The results indicated clinical safety and possible efficacy, reinforcing the need for further clinical trials on the subject.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":"19 5","pages":"e70275"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13129411/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147793061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assessing the Health and Functionality of the Microcirculation Using Thermal Imaging.","authors":"Douglas B Kell, Etheresia Pretorius","doi":"10.1002/jbio.70270","DOIUrl":"10.1002/jbio.70270","url":null,"abstract":"<p><p>The microcirculation, composed of vessels below 100 μm in diameter, sustains tissue perfusion and metabolic exchange. Its dysfunction is increasingly implicated in chronic, inflammatory, and thrombotic disorders such as diabetes, sepsis, cardiovascular disease, and Long COVID. Accurate, noninvasive assessment of microvascular health is therefore clinically significant. Infrared thermal imaging provides a rapid, contact-free, and physiologically coherent means of visualizing temperature distributions that reflect underlying blood flow. Because thermal gradients directly correspond to perfusion heterogeneity, this approach offers an interpretable surrogate for assessing microvascular function. Here, we review the physical principles of thermal imaging, summarize its application to the peripheral circulation, and compare it with established modalities including nailfold capillaroscopy and laser-based techniques. We also outline its utility across diverse pathologies associated with fibrinaloid microclot complexes and endothelial injury. Thermal imaging thus emerges as an inexpensive/scalable tool for evaluating microcirculatory dysfunction in both research and (where approved) in clinical settings.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":"19 5","pages":"e70270"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13173329/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147936596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maria Girlane Sousa Albuquerque Brandão, Mayra Gonçalves Menegueti, Roberto Bueno Filho, Luciano Rocha Mendonça, Ana Carolina Gomes, Idevania G Costa, Soraia Assad Nasbine Rabeh
{"title":"Antimicrobial Photodynamic Therapy in the Treatment of Diabetic Foot Ulcers: A Pilot Randomized Clinical Trial.","authors":"Maria Girlane Sousa Albuquerque Brandão, Mayra Gonçalves Menegueti, Roberto Bueno Filho, Luciano Rocha Mendonça, Ana Carolina Gomes, Idevania G Costa, Soraia Assad Nasbine Rabeh","doi":"10.1002/jbio.70278","DOIUrl":"10.1002/jbio.70278","url":null,"abstract":"<p><p>This pilot randomized clinical trial evaluated photodynamic therapy (PDT) in diabetic foot ulcers (DFUs), comparing an intervention group (IG, n = 5) with a control group (CG, n = 4). Participants were followed for 7 weeks. The IG received PDT, while the CG underwent conventional care. The microbiological profile was assessed by biopsy before and after treatment, and wound progression was evaluated using the Bates-Jensen Wound Assessment Tool. In the IG, only one participant showed an increase in the number of bacterial species, while the others maintained the count with changes in species composition. In the CG, two participants presented an increase in bacterial species. All participants in the IG showed a reduction in ulcer size, with an average decrease of more than 63%, whereas two participants in the CG exhibited an increase in lesion area. These results suggest clinically relevant differences, supporting PDT as a promising adjuvant strategy for antimicrobial stewardship in DFUs.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":"19 5","pages":"e70278"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13160638/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147876991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research on Carotid Blood Flow Detection Based on Interferometric Diffuse Speckle Contrast Analysis and Its Application in Preventing Ischemic Stroke.","authors":"Guang Han, Wei Zhang, Qinglong Yang, Ruijuan Chen, Yifan Wu, Huiquan Wang, Zhe Zhao","doi":"10.1002/jbio.70277","DOIUrl":"10.1002/jbio.70277","url":null,"abstract":"<p><p>This study applied the Interferometric Diffusion Speckle Contrast Analysis (iDSCA) system developed by our research group to detect changes in common carotid artery blood flow. Through animal experiments combining color Doppler ultrasound and human in vivo experiments integrating Transcranial Doppler, the iDSCA system was validated as a technical modality for early warning of ischemic stroke. The experimental results show that in animal experiments, the average relative blood flow index change rate detected by iDSCA after stenosis is -56.66%, which is consistent with the detection result of color Doppler ultrasound (-63.17%). In human in vivo experiments, the average rBFI (%) detected by iDSCA was -23.38%, consistent with the average rate of change in blood flow velocity (rMV(%) = -20.43%) measured by TCD. The iDSCA system has demonstrated significant correlation in both animal and in vivo experiments, confirming its ability to noninvasively and sensitively capture hemodynamic changes caused by CCA stenosis.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":"19 5","pages":"e70277"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147966331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Correction to \"The Synergistic Effect of Photodynamic and Sonodynamic Inactivation Against Candida albicans Biofilm\".","authors":"","doi":"10.1002/jbio.70276","DOIUrl":"https://doi.org/10.1002/jbio.70276","url":null,"abstract":"","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":"19 5","pages":"e70276"},"PeriodicalIF":2.3,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147936568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}