{"title":"Light Microscopic and Scanning Electron Microscopic Techniques to Characterize Nutlets of Some Indian Cyperoideae (Cyperaceae) and Their Taxonomic Significance.","authors":"Subrata Majumder, Pooja Rajak, Vikram Kr Das, Usha Das, Asima Mandal, Asok Ghosh","doi":"10.1002/jemt.24707","DOIUrl":"https://doi.org/10.1002/jemt.24707","url":null,"abstract":"<p><p>In the present investigation, nutlet morphological and micro-morphological characters were analyzed using Light Microscope (LM) and Scanning Electron Microscope (SEM) in 38 taxa under 13 genera from the sub-family Cyperoideae of Cyperaceae to find out whether these characters are taxonomically important or not. Nutlet morphology and surface characters of the representative taxa from all the possible tribes under the sub-family Cyperoideae namely, Fuireneae, Cypereae, Cariceae, Abildgaardieae, Eleocharideae, Pseudoschoeneae, Schoenoplecteae, and Sclerieae were evaluated for their taxonomic significance. Cluster analysis was employed considering nutlet morphological characters to determine the overall similarity among the taxa based on 153 character states. Except in few specified cases, grouping of the taxa in the clusters is in accordance to the taxonomic treatments made by recent Cyperologists. Nutlets in the tribe Abildgaardieae showed maximum level of variability in size, shape, and surface ornamentation at the level of higher taxon, but showed specificity at the species level. Tuberculate, striate-reticulate, and transversely wavy ridged surface ornamentations were found in different species of Fimbristylis. Previously described cryptic variation, and effect of different ploidy level were not reflected in nutlet surface morphology and micromorphology in Fimbristylis dichotoma and F. ovata complexes which was previously made the taxa taxonomically very difficult. Serrulate anticlinal wall in F. bisumbellata was the most unique in Fimbristylis. Species under the megadiverse genus Carex representing the tribe Cariceae showed very unique type of surface ornamentation. Surface walls of all the studied species of Carex were characterized by polygonal epidermal cells with single conical silica body (2-3 per cell in C. speciosa) of variable length and sizes. Most interestingly, in C. nubigena, presence of the central silica body and peripheral satellites was not consistent. Based on the presence and absence, two different variants under the species were identified. In C. nubigena, when silica body was present, epidermal cells were characterized by central conical silica body surrounded by variable number of satellites. The present investigation first time reports this novel nutlet surface character in C. nubigena. Among the studied characters, length and height of conical, height of apex, and width of apex are variable among Carex species. On the other hand, exclusion of the genera Schoenoplectiella and Schoenoplectus from tribe Scirpeae s.l. and placement under the tribes Pseudoschoeneae and Schoenoplecteae (respectively) was also supported by the present investigation. The present study also confirms that nutlet morphological and micro-morphological characters are useful in identification and arrangement of different taxa under the subfamily Cyperoideae of Cyperaceae. Result of the present investigation was correlated and discussed in compara","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Involvement of Programmed Cell Death and Autophagy on Schizogenous Secretory Canal Formation in Angelica dahurica var. formosana Root.","authors":"Jiahui Yang, Boyuan Li, Yue Qin, Jing Gao, Xiaofei Zhang, Xinjie Yang, Gang Zhang, Yonggang Yan, Ying Chen","doi":"10.1002/jemt.24711","DOIUrl":"https://doi.org/10.1002/jemt.24711","url":null,"abstract":"<p><p>Schizogenous secretory canal is an important functional structure of Angelica dahurica var. formosana, which is the main part of the accumulation of essential oil, coumarin and other components. The developmental process of secretory tissue and the accumulation of components are closely related. Meanwhile, programmed cell death (PCD) plays an important role in the development of plant secretory tissues, which is usually associated with autophagy. However, there are fewer studies involving PCD and autophagy with the development of schizogenous secretory canal. This study aims to provide new data on the development of schizogenous secretory canal in A. dahurica var. formosana. Light and transmission electron microscopy were used to reveal the cytological characteristics of secretory canal in A. dahurica var. formosana roots at different developmental stages. PCD and autophagy signals during the developmental process were detected using techniques such as terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) detection, propidium iodide (PI) staining, and immunofluorescent labeling. The results showed that the walls of secretory cells were intact during the development of schizogenous secretory canal in A. dahurica var. formosana roots. Mature secretory cells showed high vacuolization and accumulated a large number of essential oils. Meanwhile, we also observed significant ultrastructural features of PCD and autophagy during the developmental process. The signal detection results indicated that PCD and autophagy were jointly involved in the development of schizogenous secretory canal in A. dahurica var. formosana roots, and caspase-3-like protease may act as an upstream signal and participate in PCD.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thiago Oliveira Condé, Adriano Francis Dorigan, Silvino Intra Moreira, Patricia Ricardino da Silveira, Eduardo Alves
{"title":"Microscopic Characterization of the Infectious Process, ROS Production, and Fungi Cellular Death of Alternaria alternata on Tangerine Resistant to QoIs.","authors":"Thiago Oliveira Condé, Adriano Francis Dorigan, Silvino Intra Moreira, Patricia Ricardino da Silveira, Eduardo Alves","doi":"10.1002/jemt.24710","DOIUrl":"https://doi.org/10.1002/jemt.24710","url":null,"abstract":"<p><p>Quinone outside inhibitor (QoI) fungicide resistance in Alternaria alternata populations was reported in Brazil for the first time in 2019, in São Paulo orchards, and the mutation G143A in cytochrome b (cytb) was found in resistant isolates. Our study investigated the infectious process, production of reactive oxygen species (ROS), and fungal cell death in resistant (QoI-R) and sensitive (QoI-S) A. alternata pathotype tangerine (Aapt) isolates. Morphological characterization of Aapt isolates was performed using confocal laser scanning microscopy (CLSM). Alternaria brown spot (ABS) symptoms were produced by Aapt isolates on tangelo cv. BRS Piemonte. Germination of QoI-R conidia and production of germ tubes on tangelo leaflets treated with 100 μg mL<sup>-1</sup> of pyraclostrobin 18 h after inoculation (hai) was observed using scanning electron microscopy (SEM). At the same time, QoI-S conidial germination was inhibited on tangelo leaflets treated with pyraclostrobin. ROS production and cell death in Aapt isolates at high fungicide concentrations were observed using CLSM. QoI-S conidia exhibited high ROS production, indicating high oxidative stress. When dyed with propidium iodate (PI), QoI-S conidia emitted red fluorescence, showing cell death and confirming their sensitive phenotype. In contrast, QoI-R conidia neither produced ROS nor exhibited red fluorescence, indicating no cell death and confirming their resistant phenotype. Therefore, our findings evidence that microscopic techniques may help characterize events during fungi-plant interactions, ROS production, cell death, and Aapt phenotypes resistant and sensitive to QoIs using fluorometric protocols.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142400665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sanaz Vatani, Mohammad Hossein Abbaspour-Fard, Rasool Khodabakhshian
{"title":"Macroscopic and microscopic investigations of determining elasto-mechanical properties of limequat fruit.","authors":"Sanaz Vatani, Mohammad Hossein Abbaspour-Fard, Rasool Khodabakhshian","doi":"10.1002/jemt.24699","DOIUrl":"https://doi.org/10.1002/jemt.24699","url":null,"abstract":"<p><p>Given the paramount importance of agricultural products in global health and food security, and the increasing consumer demand, understanding the mechanical behavior of these materials under various conditions is necessary yet challenging. Due to their heterogeneous and non-uniform nature, determining their mechanical behavior is complex. This study employs atomic force microscopy (AFM) to determine the modulus of elasticity of limequat fruit at the microscopic scale and compares it with macroscopic methods. The analyses revealed a statistically significant difference (at the 1% level) in the mechanical behavior determined at the macroscopic scale. The highest modulus of elasticity, 0.752 MPa, was observed using Hertz's theory under complete placement between two parallel planes. The lowest, 0.059 MPa, was noted when a spherical probe compressed a rectangular sample. The average modulus of elasticity of the limequat peel was 2.007 MPa. At the microscopic scale, the modulus of elasticity of the fruit tissue ranged from 0.370 to 0.365 MPa, and for the peel, it was 0.246 MPa. RESEARCH HIGHLIGHTS: Working principles of this innovative technique were elaborated. The AFM technique used provide elasto-mechanical properties determination of cell walls of single living cells extracted from biological materials on the nanoscale. By combining AFM topographical image and nano-indentation of living fruit cells it will be possible to investigate cells' elasto-mechanical properties. Atomic force microscopy holds great potential for monitoring fruit mechanical properties of biological materials.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142391760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fusion of Color Correction and HSV Segmentation Techniques for Automated Segmentation of Acute Lymphoblastic Leukemia.","authors":"F E Al-Tahhan, Emam Omar","doi":"10.1002/jemt.24706","DOIUrl":"https://doi.org/10.1002/jemt.24706","url":null,"abstract":"<p><p>This article presents an enhanced segmentation methodology for the accurate detection of acute lymphoblastic leukemia (ALL) in blood smear images. The proposed approach integrates color correction techniques with HSV color space segmentation to improve white blood cell analysis. Our method addresses common challenges in microscopic image processing, including sensor nonlinearity, uneven illumination, and color distortions. The key objectives of this study are to develop a robust preprocessing pipeline that normalizes blood smear images for consistent analysis, implement an HSV-based segmentation technique optimized for leukocyte detection, and validate the method's effectiveness across various ALL subtypes using clinical samples. The proposed technique was evaluated using real-world blood smear samples from ALL patients. Quantitative analysis demonstrates significant improvements in segmentation accuracy compared to traditional methods. Our approach shows strong capability in reliably detecting and segmenting ALL subtypes, offering the potential for enhanced diagnostic support in clinical settings.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142391759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rishum Khan, Muhammad Tariq Qamar, Hina Abid, Irfan Haider, Ammar Zidan, Ali Bahadur, Shahid Iqbal, Sajid Mahmood, Mohammed T Alotaibi, Toheed Akhter
{"title":"The Investigation of Structural, Optical and Thermal Properties of Nickel Doped CeO<sub>2</sub> Integrated PVC Nanocomposite.","authors":"Rishum Khan, Muhammad Tariq Qamar, Hina Abid, Irfan Haider, Ammar Zidan, Ali Bahadur, Shahid Iqbal, Sajid Mahmood, Mohammed T Alotaibi, Toheed Akhter","doi":"10.1002/jemt.24708","DOIUrl":"https://doi.org/10.1002/jemt.24708","url":null,"abstract":"<p><p>PVC nanocomposite (NC) films with cubic CeO<sub>2</sub> and Ni-doped CeO<sub>2</sub> (NDC) have been prepared using a conventional solution-casting technique. The prepared films were characterized with FT-IR spectrometer, X-ray diffraction (XRD), and scanning electron microscopy (SEM). The optical and thermal properties of the films were evaluated using a UV-visible spectrophotometer and TGA/DSC. The optical study revealed a decrease in optical band gap energies (4.19 to 4.06 eV) whereas the increase in other optical constraints such as optical conductivity, Urbach energy, dispersion energy, refractive index, and dielectric constant of PVC NCs than pristine PVC was observed. The XRD patterns showed the presence of cubic crystalline NDC with a relatively narrower principal diffraction peak in the PVC matrix and the nonexistence of unexpected vibrational peaks in the FTIR spectra of PVC NCs confirmed the successful incorporation of nanostructured CeO<sub>2</sub> and NDC into PVC. Thermogravimetric analysis showed the higher thermal stability of NDC/PVC NC than PVC whereas differential scanning calorimetry declared no significant change in the glass transition temperature (T<sub>g</sub>) of the NCs. Moreover, a good dispersion of Ni-doped CeO<sub>2</sub> nanofiller was noticed in scanning electron micrographs.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142391761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Biogenic synthesis of AgNPs via polyherbal formulation: Mechanistic neutralization and toxicological impact on acetylcholinesterase from Bungarus sindanus venom.","authors":"Noshaba Afshin, Nadia Mushtaq, Mushtaq Ahmed, Naila Sher, Sadeq K Alhag, Fatma Mohamed Ameen Khalil, Laila A Al-Shuraym, Hajra Hameed, Farhad Badshah, Riaz Hussain","doi":"10.1002/jemt.24701","DOIUrl":"https://doi.org/10.1002/jemt.24701","url":null,"abstract":"<p><p>This study aims to examine the biogenic production, characterization, and anti-acetylcholinesterase (AAChE) properties of polyherbal formulation PHF-extract-synthesized silver nanoparticles (PHF-AgNPs). The Elapidae snake Bungarus sindanus has extremely dangerous venom for humans and contains a high amount of AChE (acetylcholinesterase). Inhibiting AChE leads to acetylcholine buildup, affecting neurotransmission. The study tested silver nanoparticles as AChE inhibitors using kinetics. Their production was confirmed through ultraviolet (UV) spectrometry at 425 nm (SPR peak of 1.94), and stabilizing functional groups were identified via Fourier transform infrared spectroscopy (FT-IR). The average length of 20 nm was confirmed by analyzing the scanning electron microscopy (SEM) data. Energy-dispersive X-ray spectroscopy (EDX) identified silver as the primary component of PHF-AgNPs (26%). Statistical analysis showed that the activity of AChE in krait venom decreased by up to 45% and 37% at a given dose of ACh (0.5 mM) by PHF and AgNPs, respectively. Utilizing the Lineweaver-Burk plot for kinetic analysis, a competitive type of inhibition is found. RESEARCH HIGHLIGHTS: Successfully synthesized PHF-extract-induced silver nanoparticles (PHF-AgNPs) demonstrated through UV spectrometry and characterized as crystalline with an average size of 45 nm by X-ray diffraction. PHF-AgNPs effectively inhibited acetylcholinesterase (AChE), an enzyme critical in neurotransmission, reducing its activity in krait venom by up to 45% at certain concentrations. Kinetic analysis revealed that the inhibition mechanism of AChE by PHF-AgNPs is competitive, offering potential for therapeutic applications in neurologically related conditions.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142375631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Morphological structure of salivary glands, alimentary canal, and Malpighian tubules in adult Eurydema spectabilis Horváth, 1882 (Heteroptera, Pentatomidae).","authors":"Hicret Arslan, Selami Candan","doi":"10.1002/jemt.24684","DOIUrl":"https://doi.org/10.1002/jemt.24684","url":null,"abstract":"<p><p>Eurydema spectabilis (Heteroptera: Pentatomidae) has a piercing-sucking mouth type and feeds on plant sap. In this study, the morphological structure of the salivary glands, alimentary canal, and Malpighian tubules of E. spectabilis was examined using light and scanning electron microscopy. Salivary glands consist of the principal and accessory salivary glands. In E. spectabilis, digestion begins in the mouth and ends in the anus. Alimentary canal is divided into three parts: foregut, midgut, and hindgut. The foregut consists of pharynx, esophagus, and proventriculus. The esophagus connects to the proventriculus and resembles a narrow tube. The wall of the proventriculus has a recessed structure and is surrounded by a single cylindrical layer of epithelium and muscle. The midgut is divided into three regions: the first, second, and third ventricles (V1-V3). V1 and V2 consist of single-layered cylindrical epithelium. V3 contains a single layer of cuboidal epithelium. Gastric caeca were found in the midgut. The hindgut consisted of a pylorus followed by a well-developed rectum. The wall of the rectum consists of a single-layer cuboidal epithelium and muscle. Its lumen contains numerous bacteria and uric acid crystals. The pylorus consists of a single-layered cylindrical epithelium. It is also the origin of Malpighian tubules. Malpighian tubules consist of two regions: proximal and distal. The morphological structure of the salivary glands, alimentary canal, and Malpighian tubules of E. spectabilis, which has not been studied before, was examined and discussed in comparison with other orders. It is also aimed to contribute to future studies. RESEARCH HIGHLIGHTS: In E. spectabilis, the salivary glands are divided into principal and accessory salivary glands. Microvilli and numerous secretory granules were found in Malpighian tubules. Numerous uric acid crystals and bacteria were found in the rectum lumen.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142365794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alia Rani, Muhammad Kaleem Shabbir, Ayesha Fatima, Saqib Ali, Muhammad Alamzeb, Ahmed Nadeem, Javeed Akhtar, Aqib Majeed Bejarani, Khalid Hussain Thebo
{"title":"Visible Light-Triggered Catalytic Performance of Reduced Graphene Oxide Decorated With Copper Oxide Nanocomposite for Degradation of Rhodamine B Dye and Kinetics Studies.","authors":"Alia Rani, Muhammad Kaleem Shabbir, Ayesha Fatima, Saqib Ali, Muhammad Alamzeb, Ahmed Nadeem, Javeed Akhtar, Aqib Majeed Bejarani, Khalid Hussain Thebo","doi":"10.1002/jemt.24703","DOIUrl":"https://doi.org/10.1002/jemt.24703","url":null,"abstract":"<p><p>Herein, novel nanocomposites based on reduced graphene oxide decorated copper oxide nanoparticles (rGO/CuO) were prepared by the in situ co-precipitation method. The structural, morphological, and optical characterization of as-prepared nanocomposites was performed by powdered x-ray diffraction (p-XRD), scanning electron microscopy (SEM), and Fourier-transform infrared (FTIR), Raman, and ultraviolet-visible (UV-Vis) spectroscopy, respectively. The as-prepared nanocomposites exhibited better photocatalytic activity of rhodamine B dye with maximum ~94% degradation in 120 min with a rate constant of 0.2353 min<sup>-1</sup> under optimized conditions. Furthermore, the effects of solution pH and catalyst loading are studied on the degradation process. Therefore, this state-of-the-art strategy for the decoration of CuO nanoparticles onto the surface of rGO nanosheets could be an ideal platform for fabricating highly efficient photocatalysts.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142361781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lin Gao, Wenju Liu, Bingzi Kang, Han Wu, Jiajia He, Xiaolu Li, Gangqin Xi, Shuangmu Zhuo
{"title":"AutoLNMNet: Automated Network for Estimating Lymph-Node Metastasis in EGC Using a Pyramid Vision Transformer and Data Derived From Multiphoton Microscopy.","authors":"Lin Gao, Wenju Liu, Bingzi Kang, Han Wu, Jiajia He, Xiaolu Li, Gangqin Xi, Shuangmu Zhuo","doi":"10.1002/jemt.24705","DOIUrl":"https://doi.org/10.1002/jemt.24705","url":null,"abstract":"<p><p>Lymph-node status is important in decision-making during early gastric cancer (EGC) treatment. Currently, endoscopic submucosal dissection is the mainstream treatment for EGC. However, it is challenging for even experienced endoscopists to accurately diagnose and treat EGC. Multiphoton microscopy can extract the morphological features of collagen fibers from tissues. The characteristics of collagen fibers can be used to assess the lymph-node metastasis status in patients with EGC. First, we compared the accuracy of four deep learning models (VGG16, ResNet34, MobileNetV2, and PVTv2) in training preprocessed images and test datasets. Next, we integrated the features of the best-performing model, which was PVTv2, with manual and clinical features to develop a novel model called AutoLNMNet. The prediction accuracy of AutoLNMNet for the no metastasis (Ly0) and metastasis in lymph nodes (Ly1) stages reached 0.92, which was 0.3% higher than that of PVTv2. The receiver operating characteristics of AutoLNMNet in quantifying Ly0 and Ly1 stages were 0.97 and 0.97, respectively. Therefore, AutoLNMNet is highly reliable and accurate in detecting lymph-node metastasis, providing an important tool for the early diagnosis and treatment of EGC.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142350168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}