Article
Chemistry, Analytical
Hang Hu, Ruichuan Yin, Hilary M. Brown, Julia Laskin
Summary: This study introduces an unsupervised spatial segmentation approach that combines multivariate clustering and univariate thresholding to effectively segment mass spectrometry imaging (MSI) data, demonstrating its performance and robustness on two tissue sections data sets acquired with different spatial resolutions. The resulting segmentation maps are easy to interpret and project onto the known anatomical regions of the tissue.
ANALYTICAL CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Arnaud Cannet, Camille Simon-Chane, Mohammad Akhoundi, Aymeric Histace, Olivier Romain, Marc Souchaud, Pierre Jacob, Pascal Delaunay, Darian Sereno, Philippe Bousses, Pascal Grebaut, Anne Geiger, Chantel de Beer, Dramane Kaba, Denis Sereno
Summary: This study presents a new method for identifying Glossina species using Wing Interference Patterns (WIPs). By combining deep learning algorithms with a database of WIPs representing 23 Glossina species, accurate automatic recognition is achieved.
SCIENTIFIC REPORTS
(2022)
Review
Chemistry, Analytical
Roman S. Borisov, Mariya D. Matveeva, Vladimir G. Zaikin
Summary: In recent years, there has been a special focus on the use of reactive matrices in MALDI-MS, which have dual properties and have been applied in bioanalysis to reduce sample treatment time and improve sensitivity. True reactive matrices interact with molecules through exchange or addition reactions, enhancing molecular identification and profiling.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Alexis Delabriere, Philipp Warmer, Vincenth Brennsteiner, Nicola Zamboni
Summary: Metabolomics shows promise in various research areas, but processing large-scale data remains a challenge. The SLAW workflow addresses this by offering advanced algorithms and optimization for non-targeted LC-MS data, achieving efficient and scalable analysis with superior performance compared to existing workflows like openMS and XCMS.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Medicinal
Fang Xie, Mark Reid Groseclose, Sara Tortorella, Gabriele Cruciani, Stephen Castellino
Summary: In this study, MALDI IMS was used to map specific lipids in minipig skin, identifying lipid markers associated with sebaceous glands and hair follicles. Biochemical pathway analysis revealed potential drug-targeting strategies for reducing sebum overproduction. This research highlights the ability of MALDI IMS to link molecular distribution with both morphological features and physiological state in skin tissue, providing a basis for drug discovery and dermatological research.
Article
Biology
Ang Guo, Zhiyu Chen, Fang Li, Qian Luo
Summary: Mass spectrometry imaging (MSI) is a powerful tool for understanding biochemical mechanisms in biology by localizing molecules in a spatially resolved manner. Spatial segmentation, using clustering based on mass spectral similarities, is commonly used to automate the definition of regions of interest (ROIs). However, determining the appropriate number of clusters (#Clusters) for segmentation remains unresolved. In this study, a multimodal fusion strategy was proposed to objectively and reliably select #Clusters by incorporating additional information from histology images. The results showed that the consistency between histology and MSI segmentation could be used as an effective measure of the biological validity of the ROIs. The strategy was validated on mouse kidney and renal tumor specimens, producing multimodally corroborated ROIs that accurately agreed with ground truths.
Article
Biochemical Research Methods
Tanja Bien, Elizabeth A. Hambleton, Klaus Dreisewerd, Jens Soltwisch
Summary: The Waminoa sp. acoel flatworms hosting Symbiodiniaceae and Amphidinium dinoflagellate algae provide an interesting model for symbiosis in marine environments. Through advanced imaging techniques, it was discovered that different sterol species play specific roles in the metabolism of Waminoa beyond simply serving as a source of energy, highlighting the value of this research for future spatially resolved analysis of sterols.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Review
Oncology
Shadrack M. Mutuku, Xander Spotbeen, Paul J. Trim, Marten F. Snel, Lisa M. Butler, Johannes Swinnen
Summary: Prostate cancer is a heterogeneous disease and treatment decisions are challenging. In this article, the emerging importance of rewired lipid metabolism as a source for biomarkers and therapeutic targets for prostate cancer is highlighted. The spatial mapping of lipids and related metabolic pathways and its potential for future implementation in treatment decision-making are evaluated. The detection and management of prostate cancer have improved, but distinguishing between indolent and aggressive forms of the disease remains a challenge. Spatial analytical approaches, such as mass spectrometry-based lipid imaging and gene-based spatial omics technologies, are discussed as potential solutions. The study aims to evaluate the future implementation of spatial lipidomics and transcriptomics for prognostication, target identification, and treatment decision-making for prostate cancer.
Article
Biochemical Research Methods
Kaixuan Xiao, Yu Wang, Kangning Dong, Shihua Zhang
Summary: Imaging mass spectrometry (IMS) is a powerful tool for spatial metabolomics, but the complexity of IMS data hinders biomarker acquisition and specific activity studies. To address this, we introduce SmartGate, an AI tool that enables automatic peak selection and spatial structure identification. SmartGate significantly improves spatial segmentation accuracy and biomarker identification based on tissue structure-guided differential analysis.
BRIEFINGS IN BIOINFORMATICS
(2023)
Article
Environmental Sciences
Chunxia Ma, Xiao Wang, Huamin Zhang, Wei Liu, Daijie Wang, Feng Liu, Heng Lu, Luqi Huang
Summary: The study developed a novel Ti3C2 MXene nanowire (TMN) as a matrix to enhance MALDI MS performance in detecting pesticides, exhibiting features such as high sensitivity, excellent repeatability, salt tolerance, and low background noise. This matrix was also successfully applied for the analysis of residual pesticides in traditional Chinese herbs and for visualizing the spatial distribution of endogenous compounds and xenobiotic pesticides in the medicinal plant P. quinquefolium.
Article
Biochemistry & Molecular Biology
Domenic Dreisbach, Dhaka R. Bhandari, Anja Betz, Linda Tenbusch, Andreas Vilcinskas, Bernhard Spengler, Georg Petschenka
Summary: The mechanism of milkweed cardenolides sequestration in monarch butterflies and how related species cope with these toxins are still unknown. This study used mass spectrometry imaging to compare the distribution of cardenolides in caterpillars of monarch butterflies and common crow butterflies. The results showed that monarch butterflies can sequester cardenolides from milkweed, while no cardenolides were found in the tissues of common crow butterflies. The study also identified the transport and storage sites of cardenolides in monarch butterflies.
MOLECULAR ECOLOGY RESOURCES
(2023)
Article
Chemistry, Multidisciplinary
Ramla Bensaci, Belal Khaldi, Oussama Aiadi, Ayoub Benchabana
Summary: This study introduces a hybrid approach that combines CNN and traditional concept-to-image assignment methods to generate compact and unified descriptors through multiple steps, effectively improving the accuracy and semantic relatedness of image annotation.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Analytical
Yuchen Zou, Weiwei Tang, Bin Li
Summary: Spatial segmentation is important in mass spectrometry imaging (MSI) data analysis, as it helps to identify homogeneous/heterogeneous subgroups and provides vital characteristics for biological analysis. This study proposes a segmentation pipeline that utilizes pattern compression by principal component analysis (PCA) for easy and effective segmentation.
Article
Multidisciplinary Sciences
Kristine Korzow Richter, Maria C. Codlin, Melina Seabrook, Christina Warinner
Summary: Collagen peptide mass fingerprinting by MALDI-TOF-MS, also known as ZooMS, is a rapidly growing analytical technique in the fields of archaeology, ecology, and cultural heritage. It enables rapid taxonomic identification of large bone assemblages and cultural heritage objects. However, there are limitations that need to be addressed for future advancements.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Multidisciplinary
Weiwei Tang, Jun-Jie Shi, Wei Liu, Xu Lu, Bin Li
Summary: A matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI) assisted genome mining strategy was applied to discover a glycosyltransferase (GT) named PgGT1 from the root of Platycodon grandiflorum. PgGT1 was found to catalyze the synthesis of platycoside E (PE) by sequentially attaching two beta-1,6-linked glucosyl residues to the glucosyl residue at the C3 position of platycodin D (PD). The study also revealed the crucial roles of residues S273, E274, and H350 in stabilizing the sugar donor and positioning the glucose for optimal glycosylation. These findings provide insights into the biosynthetic pathway of PE and have potential implications in industrial biotransformation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Otorhinolaryngology
Karsten Gavenis, Orlando Guntinas-Lichius, Jan Loehler, Ralf Tostmann, Thomas Asendorf
Summary: Clinical trials, as a continuation and application of basic medical research findings, make a significant contribution to medical research by promoting the translation and application of medical knowledge. They help establish a healthcare system that meets the needs of patients and operates efficiently in the long term, while adhering to national, European, and international regulatory requirements. In academia, clinical trial centers within institutions play a crucial role in providing the multidisciplinary expertise necessary for the success of investigator-driven clinical trials.
Article
Oncology
David Pertzborn, Hoang-Ngan Nguyen, Katharina Huettmann, Jonas Prengel, Gunther Ernst, Orlando Guntinas-Lichius, Ferdinand von Eggeling, Franziska Hoffmann
Summary: The complete resection of a malignant tumor is crucial for a patient's survival. Surgeons currently rely on subjective and limited frozen section analysis performed by pathologists during surgery. Hyperspectral imaging combined with machine learning offers a potential solution for real-time and accurate tumor margin assessment.
Article
Otorhinolaryngology
Johanna Westermann-Lammers, Jawad Salameh, Christian Dobel, Orlando Guntinas-Lichius
Summary: A pilot study was conducted on 25 normal hearing young adults to investigate the effect of simulated acute hearing loss on static balance function. The study found that simulated moderate to severe bilateral conductive hearing loss did not disturb the static balance function in normal hearing younger adults.
EUROPEAN ARCHIVES OF OTO-RHINO-LARYNGOLOGY
(2023)
Article
Otorhinolaryngology
Katharina Geissler, Robin Brock, Winfried Meissner, Michael Kiehntopf, Orlando Guntinas-Lichius
Summary: In this retrospective study of 680 patients who underwent otolaryngological surgery, it was found that preoperative inflammatory serum C-reactive protein (CRP) and leukocyte count (LEUK) were associated with postoperative pain and complaints. Higher postoperative pain was associated with LEUK values > 11.3 Gpt/l and higher preoperative chronic pain.
EUROPEAN ARCHIVES OF OTO-RHINO-LARYNGOLOGY
(2023)
Article
Neurosciences
Vanessa Trentzsch, Nadiya Mueller, Martin Heinrich, Anna-Maria Kuttenreich, Orlando Guntinas-Lichius, Gerd Fabian Volk, Christoph Anders
Summary: This study analyzed the test-retest reliability of high-resolution facial electromyography (sEMG) for facial expressions. The results showed that the Kuramoto scheme had better reliability than the Fridlund scheme in intra-day and between-day measurements. Therefore, the Kuramoto scheme is recommended for repeated facial sEMG measurements of facial expressions.
FRONTIERS IN HUMAN NEUROSCIENCE
(2023)
Article
Otorhinolaryngology
L. Klimek, U. Foerster-Ruhrmann, H. Olze, A. G. Beule, A. M. Chaker, J. Hagemann, T. Huppertz, T. K. Hoffmann, S. Dazert, T. Deitmer, S. Strieth, H. Wrede, W. Schlenter, H. J. Welkoborsky, B. Wollenberg, S. Becker, F. Baerhold, F. Klimek, I. Casper, J. Zuberbier, C. Rudack, M. Cuevas, C. A. Hintschich, O. Guntinas-Lichius, T. Stoever, C. Bergmann, P. Werminghaus, O. Pfaar, J. Gosepath, M. Groeger, C. Beutner, M. Laudien, R. K. Weber, T. Hildenbrand, A. S. Hoffmann, C. Bachert
Summary: This study analyzed previous data on the treatment of CRSwNP with mepolizumab and provided recommendations for follow-up, therapy intervals, possible therapy pauses, and discontinuation of therapy when using mepolizumab as add-on therapy for severe CRSwNP.
LARYNGO-RHINO-OTOLOGIE
(2023)
Article
Otorhinolaryngology
H-J Welkoborsky, Thomas Deitmer, Jan Loehler, Orlando Guntinas-Lichius
Summary: The German Healthcare System is undergoing significant changes and requires appropriate intersectoral treatment structures. ENT department chairmen and ENT specialists in private practice believe that the current remuneration system needs urgent revision. Challenges include emergency care, information transfer for inpatients, and problems with continuing education of residents.
LARYNGO-RHINO-OTOLOGIE
(2023)
Editorial Material
Otorhinolaryngology
Orlando Guntinas-Lichius, Stephan Lang, Timo Stoever, Thomas K. Hoffmann, Stefan Plontke, Hans-Juergen Welkoborsky, Thomas Zahnert, Burkard M. Lippert, Nicole Rotter, S. Dazert, Andreas Dietz, Thomas Deitmer
Summary: The 2018 template for otorhinolaryngology specialist training in Germany is being implemented by the federal associations. The German Society and Professional Association of German Otorhinolaryngologists recommended a training plan for Otorhinolaryngology, Head and Neck Surgery as a guideline for the federal medical associations. The state medical associations are currently working on criteria for granting authority to otorhinolaryngologists and training institutions.
LARYNGO-RHINO-OTOLOGIE
(2023)
Editorial Material
Otorhinolaryngology
Orlando Guntinas-Lichius
LARYNGO-RHINO-OTOLOGIE
(2023)
Article
Oncology
Susanne Wiegand, Gunnar Wichmann, Jeannette Vogt, Kathrin Vogel, Annegret Franke, Thomas Kuhnt, Florian Lordick, Anne-Marie Scheuble, Peter Hambsch, Peter Brossart, Franz Georg Bauernfeind, Holger Kaftan, Georg Maschmeyer, Matthias Paland, Marc Muenter, Victor Lewitzki, Nicole Rotter, Carmen Stromberger, Marcus Beck, Steffen Dommerich, Thomas Christoph Gauler, Gunnar Hapke, Orlando Guntinas-Lichius, Ursula Schroeder, Martin Goerner, Matthias G. Hautmann, Felix Steger, Balint Tamaskovics, Anett Schmiedeknecht, Andreas Dietz
Summary: Most patients with head and neck squamous cell carcinoma (HNSCC) are diagnosed with locally advanced disease and can be treated with surgery and adjuvant radio(chemo)therapy or definitive chemoradiation. However, recurrence is common, especially in high-risk cases. The ADRISK trial aims to investigate whether the addition of pembrolizumab to the standard treatment improves event-free survival in locally advanced HNSCC patients. This ongoing prospective, randomized controlled trial is recruiting patients since August 2018.
FRONTIERS IN ONCOLOGY
(2023)
Article
Otorhinolaryngology
Susanna Seeberger, Peter Schlattmann, Orlando Guntinas-Lichius
Summary: This study analyzed the development of facial surgery in Germany and found a significant increase in the number and proportion of patients undergoing surgery for chronic flaccid paralysis of the facial nerve in the past decade. Nerve reconstruction surgery and static sling surgery showed the highest increase in surgery rate.
EUROPEAN ARCHIVES OF OTO-RHINO-LARYNGOLOGY
(2023)
Article
Otorhinolaryngology
Mussab Kouka, Nils Bevern, Julia Bitter, Orlando Guntinas-Lichius
Summary: This retrospective study investigates the impact of adding N-acetylcysteine (NAC) to prednisolone treatment on patients with idiopathic sudden sensorineural hearing loss (ISSHL). The results suggest that combined treatment with prednisolone and NAC leads to better hearing recovery outcomes compared to prednisolone treatment alone.
EUROPEAN ARCHIVES OF OTO-RHINO-LARYNGOLOGY
(2023)
Review
Oncology
Francisco Civantos, Zachary M. Helmen, Patrick J. Bradley, Andres Coca-Pelaz, Remco De Bree, Orlando Guntinas-Lichius, Luiz P. Kowalski, Fernando Lopez, Antti A. Makitie, Alessandra Rinaldo, K. Thomas Robbins, Juan P. Rodrigo, Robert P. Takes, Alfio Ferlito
Summary: Skin cancer, especially non-melanoma skin cancer, is the most common malignancy worldwide. The management of different types of skin cancer is not clearly defined in scientific literature. Some require surgical removal, but the management of regional metastasis may vary, and microscopic metastases may be undetectable. This article summarizes the current literature on managing non-melanoma skin cancer that has spread to regional lymph nodes.
Article
Oncology
Mussab Kouka, Laura Gerlach, Jens Buentzel, Holger Kaftan, Daniel Boeger, Andreas H. Mueller, Thomas Ernst, Orlando Guntinas-Lichius
Summary: The impact of HPV infection and smoking status on overall survival of OPSCC patients was investigated. HPV-positive patients had better survival, while smoking status had no independent influence on the risk of death. The majority of OPSCC cases in Thuringia were HPV-negative smokers. Optimizing therapeutic strategies for HPV-negative patients is more important.
Review
Biochemistry & Molecular Biology
Veronica Fernandez-Alvarez, Miriam Linares-Sanchez, Carlos Suarez, Fernando Lopez, Orlando Guntinas-Lichius, Antti A. Makitie, Patrick J. Bradley, Alfio Ferlito
Summary: The traditional approach of assessing carotid artery disease based on luminal narrowing is being challenged by modern risk stratification approaches that focus on the vulnerable plaque. Imaging techniques, such as ultrasound, computed tomography, magnetic resonance imaging, and optical coherence tomography, have become important tools in detecting and characterizing unstable carotid plaques.