{"title":"Classification of Autism Spectrum Disorder Using Edge-Weight Enhanced Graph Attention Network With Multiple Features of Resting-State fNIRS Signals.","authors":"Jingwen Cai, Xi Zeng, Jun Li","doi":"10.1002/jbio.202500138","DOIUrl":"https://doi.org/10.1002/jbio.202500138","url":null,"abstract":"<p><p>Functional near-infrared spectroscopy (fNIRS), as a noninvasive brain imaging modality, has shown great potential for autism spectrum disorder (ASD) identification combined with machine learning. In this work, we proposed an ASD identification method using edge-weight enhanced graph attention network (EWE-GAT) with multiple features in resting-state fNIRS signals measured from the bilateral temporal lobes on 22 typically developing (TD) children and 25 children with ASD. Seven features were selected for the EWE-GAT model, including five node features: the coupling between oxygenated hemoglobin (HbO) and deoxygenated hemoglobin (Hb) fluctuations, sample entropy for HbO and Hb, and average resting-state functional connectivity (RSFC) for HbO and Hb of each channel, and two edge features: RSFC between each channel pair for both HbO and Hb. With the proposed method, high accurate classification was achieved with 97.92% accuracy, 100% sensitivity, 96.43% precision, and 98.08% F1 score, outperforming usually used traditional machine learning and convolutional neural network models.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":" ","pages":"e202500138"},"PeriodicalIF":2.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144839460","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}
Ruijie Hou, Jun Ye, Yang Zhang, Feng Hua, Bin Xu, Xuefeng Liu, Muhammad Qasim Mehmood, Jichuan Xiong
{"title":"Coherent-Excitation PACT With Frequency-Compensated Reconstruction for High-Contrast Deep-Tissue Imaging.","authors":"Ruijie Hou, Jun Ye, Yang Zhang, Feng Hua, Bin Xu, Xuefeng Liu, Muhammad Qasim Mehmood, Jichuan Xiong","doi":"10.1002/jbio.202500175","DOIUrl":"https://doi.org/10.1002/jbio.202500175","url":null,"abstract":"<p><p>Photoacoustic computed tomography (PACT) synergizes optical absorption contrast with ultrasonic resolution for noninvasive biomedical imaging yet faces limitations in signal-to-noise ratio (SNR), resolution, and contrast. This study introduces a coherent-excitation PACT system integrating interferometric optical excitation and Frequency-Compensated Filtered Back Projection (FC-FBP) reconstruction. The proposed method utilizes phase-locked dual-pulse interferometric excitation to amplify photoacoustic emissions; for the isolated chicken heart, the resolution is improved by 7.9% compared to the single-pulse protocol. The FC-FBP algorithm compensates for frequency-dependent acoustic attenuation via depth-adaptive Gaussian filtering, enhancing the projected signal in the target area while suppressing speckle artifacts. Through experimental validation, we confirm that the coherent-excitation scheme enables simultaneous optimization of optical fluence distribution and acoustic coherence; hence, it can be used to resolve previously indistinguishable hemoglobin oxygenation gradients in murine tumor models. This advancement establishes a high-sensitivity PACT framework, showing potential for real-time intraoperative imaging and dynamic metabolic monitoring in clinical applications.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":" ","pages":"e202500175"},"PeriodicalIF":2.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144850198","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}
Rebeca Vieira de Lima, Bruno Pereira de Oliveira, Francisco Eduardo Gontijo Guimarães, Kate Cristina Blanco, Vanderlei Salvador Bagnato
{"title":"Curcumin Internalization in Streptococcus mutans Biofilms: A Confocal Microscopy Analysis.","authors":"Rebeca Vieira de Lima, Bruno Pereira de Oliveira, Francisco Eduardo Gontijo Guimarães, Kate Cristina Blanco, Vanderlei Salvador Bagnato","doi":"10.1002/jbio.202500357","DOIUrl":"https://doi.org/10.1002/jbio.202500357","url":null,"abstract":"<p><p>Streptococcus mutans is one of the main harmful agents to oral health, exhibiting high resistance in its biofilm form. This study evaluated curcumin as a photosensitizer in photodynamic inactivation (PDI), monitoring its internalization time and activity. The biofilm was cultured for 24 h and treated with curcumin activated by two-photon excitation (800 nm). After photodegradation, curcumin continued to penetrate effectively into the biofilms, replacing previously degraded molecules with new ones and constantly generating reactive species (ROS and singlet oxygen) capable of damaging the bacteria. This contrasts with previous studies that reported limitations of natural photosensitizers in this context. Therefore, the principal contribution of this study is the in vitro demonstration of the dynamic efficacy of curcumin in the complex biofilm environment. The use of confocal microscopy was essential to visualize and quantify the effects of curcumin, highlighting its value as an analytical tool in the evaluation of biofilm treatments.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":" ","pages":"e202500357"},"PeriodicalIF":2.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144850199","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}
Andrei I Demenshin, Maria S Istomina, Lidia N Medvedeva, Elena V Solovyeva
{"title":"Peculiarities of Tissue Imaging by SERS Spectroscopy and Fluorescence Tomography Using Gold Nanolabels.","authors":"Andrei I Demenshin, Maria S Istomina, Lidia N Medvedeva, Elena V Solovyeva","doi":"10.1002/jbio.202500033","DOIUrl":"https://doi.org/10.1002/jbio.202500033","url":null,"abstract":"<p><p>Multimodal imaging agents derived from plasmonic nanoparticles have great potential for medical diagnostics. To date, dual-mode Raman-fluorescence gold-based nanolabels have remained outside conformed in vivo studies. To overcome this lack, gold nanorods coated by a polymer shell with incorporated cyanine 7 and a bimodal optical response were prepared. The study of nanolabels imaging capabilities was performed after their intravenous administration to laboratory mice. Natural biodistribution of the labels was obtained from SERS spectra of tissue sections, fluorescence images of organs, and gold concentrations determined in the digested tissues by ICP-AES. The comparison of distribution diagrams obtained from three techniques revealed that fluorescence tomography gives the underestimated labels content in the spleen, arising as a result of emission self-quenching. The consistency of SERS and ICP-AES results opens up the opportunity to use SERS as a complementary technique to assess semi-quantitative gold nanoparticle distribution in the tissues.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":" ","pages":"e202500033"},"PeriodicalIF":2.3,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144839461","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":"Advances in Functional Near-Infrared Spectroscopy: Physical Principles and Expanding Applications in Neuroscience.","authors":"Mengxiang Chu, Yunxiang Ma, Rumeng Tian, Siyi Liu, Jingjing Yu, Xiaowei He, Hongbo Guo","doi":"10.1002/jbio.202500147","DOIUrl":"https://doi.org/10.1002/jbio.202500147","url":null,"abstract":"<p><p>Functional near-infrared spectroscopy (fNIRS) is an imaging technique that uses near-infrared light to monitor blood oxygen level changes in the cerebral cortex and noninvasively study brain function. This review provides an overview of the expanding applications and physical principles of fNIRS to enhance understanding of its imaging process and promote awareness of its broad applicability and potential. We systematically searched PubMed, Web of Science, and Google Scholar, analyzing studies on fNIRS applications in psychiatry, neurology, education, and multimodal imaging. We also introduce the imaging principles of continuous wave fNIRS, frequency domain fNIRS, time domain fNIRS, and diffuse optical tomography fNIRS (including high-density diffuse optical tomography). These studies have demonstrated the potential of fNIRS technology in measuring cerebral hemodynamics with high temporal and spatial resolution. The results of this review indicate that fNIRS is a versatile neuroimaging tool with great potential in research and clinical applications.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":" ","pages":"e202500147"},"PeriodicalIF":2.3,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144839459","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}
Yao Zhou, Mengmeng Li, Shimeng Gao, Fenghe Zhong, Peng Fei
{"title":"Resolution-Enhanced Mesoscopic Imaging With Cylindrical Lens-Corrected Oblique Plane Light-Sheet Microscopy.","authors":"Yao Zhou, Mengmeng Li, Shimeng Gao, Fenghe Zhong, Peng Fei","doi":"10.1002/jbio.202500262","DOIUrl":"https://doi.org/10.1002/jbio.202500262","url":null,"abstract":"<p><p>Single-objective light sheet fluorescence microscopy (LSFM) excels in high-speed imaging of large samples, but its limited fluorescence collection angle would degrade system resolution due to the fluorescence loss at low magnifications. To address this issue, we introduce a new method using a coaxial modulation module. By combining two sets of cylindrical lenses with the camera's rolling shutter, we achieve 3D imaging with an optimized fluorescence collection angle in low-magnification mode. Compared to advanced single-objective LSFM, our method provides a practical solution for low-NA oblique plane microscopy (NA 0.5) and enhances resolution by ~30% along the light propagation axis. We validated the system's resolution with fluorescent microspheres, achieving sub-micron lateral and sub-cellular axial resolutions. Furthermore, we have demonstrated its feasibility using GFP-labeled neurons and Siha cervical cancer cell samples for cell counting.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":" ","pages":"e202500262"},"PeriodicalIF":2.3,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144818865","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":"Hyperspectral Imaging for the Differential Diagnosis of Squamous Cell Carcinoma and Keratoacanthoma of the Head and Neck.","authors":"Tianyi Hang, Danfeng Fan, Ansheng Jie, Zhengyuan Chen, Xiaoqing Yue, Wei Zhang","doi":"10.1002/jbio.202500358","DOIUrl":"https://doi.org/10.1002/jbio.202500358","url":null,"abstract":"<p><p>Accurate, label-free, non-destructive discrimination between head and neck squamous cell carcinoma (HNSCC) and keratoacanthoma (KA) remains challenging due to their overlapping morphology. We introduce a real-time, end-to-end hyperspectral imaging (HSI) workflow applied to 80 formalin-fixed, paraffin-embedded sections, each sampled with five 50 × 50-pixel ROIs and captured across 400-1000 nm to produce 128-band reflectance cubes. After reflectance calibration, Savitzky-Golay smoothing, and first-derivative preprocessing, a compact one-dimensional convolutional neural network achieved 87% accuracy, 93% sensitivity, 77% specificity, and AUC = 0.85 on a held-out test set. Spectral difference analysis revealed key biomarkers at the hemoglobin Q-band (630 nm) and OH overtone (917.5 nm), corresponding to vascular and extracellular matrix variations. This resource-efficient photonic platform enables rapid, automated \"optical biopsy\" without exogenous stains, offering scalable adjunctive diagnostics and a clear pathway toward intraoperative tissue classification.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":" ","pages":"e202500358"},"PeriodicalIF":2.3,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144801353","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":"Feasibility Study of Visible Spectrum as a Tool for Discriminating Urinary Microalbumin.","authors":"Chengbo Yang, Zhilong Cai, Jingjun Wu, Ping Yang, Zhiliang Zhao","doi":"10.1002/jbio.202500273","DOIUrl":"https://doi.org/10.1002/jbio.202500273","url":null,"abstract":"<p><p>This study validated the feasibility of visible spectroscopy in rapidly detecting Urinary Microalbumin (UALB). Based on 127 clinical urine samples, spectra ranging from 400 to 750 nm were collected using a microspectrometer. The successive projections algorithm (SPA) was used to screen for nine wavelengths highly correlated with UALB, and the spectral index (SI) method was fused to construct an m-SPA-SI strategy. The m-SPA-SI was combined with a random forest (RF) model for discriminant analysis. The results showed that the m-SPA-SI<sub>6</sub>-RF model for low-dimensional spectra exhibited the best performance, with a training accuracy of 100% and improved testing accuracy and sensitivity of 97.37% and 0.9333, respectively. The number of wavelengths was reduced from 457 to 9. Research has confirmed that the combination of low-dimensional spectroscopy and a wavelength selection algorithm can achieve efficient discrimination of UALB, providing a new method for portable screening of diseases such as chronic kidney disease.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":" ","pages":"e202500273"},"PeriodicalIF":2.3,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144791126","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":"Multimodal PAI/OCT Imaging System for Precision Diagnosis and Therapy in Atopic Dermatitis: A Pilot Study.","authors":"Jiayi Yang, Qi Chen, Chunxiao Li, Jingjuan Shi, Peiru Wang, Xiuli Wang","doi":"10.1002/jbio.202500165","DOIUrl":"https://doi.org/10.1002/jbio.202500165","url":null,"abstract":"<p><p>Atopic dermatitis (AD), a chronic inflammatory skin disorder, faces diagnostic limitations due to subjective clinical assessments. This study introduces an integrated photoacoustic imaging (PAI)/optical coherence tomography (OCT) system for noninvasive, quantitative evaluation of MC903-induced AD-like dermatitis in mice and Crisaborole efficacy. Multimodal imaging demonstrated Crisaborole's suppression of pathological angiogenesis (50.7% fewer vascular junctions, 23% reduced density, 47% shorter vessel length) and tissue remodeling (20% epidermal thinning, 23% signal decline), validated by histopathology. The system captured in vivo dynamic vascular network restructuring and epidermal alterations during AD progression, revealing temporal links between angiogenesis, hyperplasia, and inflammation. PAI/OCT synergistically provides complementary functional-structural biomarkers, advancing precision diagnosis and therapy in AD models. This work pioneers real-time monitoring of AD pathophysiology, supporting clinical translation through quantitative multiparametric characterization for tailored therapeutic strategies.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":" ","pages":"e202500165"},"PeriodicalIF":2.3,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144791127","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}
Zhan Jinming, Wu Xuefeng, Yang Lijun, Ding Ye, Liu Weiting
{"title":"Influence of Picosecond Laser Process Parameters on the Ablation of Vitro Skin Tissue.","authors":"Zhan Jinming, Wu Xuefeng, Yang Lijun, Ding Ye, Liu Weiting","doi":"10.1002/jbio.202500174","DOIUrl":"https://doi.org/10.1002/jbio.202500174","url":null,"abstract":"<p><p>Given the demand for ablation treatment using picosecond lasers in medical cosmetology, researchers analyze the degree of thermal damage to skin tissue by combining theoretical modeling with experimental research. The effects of laser scanning speed, number of scans (30-90) and scanning paths on the heat-affected zone, ablation depth, and thermal damage were investigated using one-way analysis of variance. The results show that increasing the scanning speed can reduce the heat-affected zone; the number of repeated scans is positively correlated with the ablation depth; and the concentric circle scanning path can reduce the accumulation of thermal damage compared with linear scanning. On this basis, the optimal combination of process parameters is obtained, with good macroscopic morphology and lower thermal damage than continuous lasers.</p>","PeriodicalId":94068,"journal":{"name":"Journal of biophotonics","volume":" ","pages":"e202500174"},"PeriodicalIF":2.3,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144786255","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}