First, the potential role of Raman-based techniques in biomedicine is introduced. Second, an overview about the instrumentation for spontaneous and coherent Raman scattering microscopic imaging is given with a focus of recent developments. Third, imaging strategies are summarized including sequential registration with laser scanning microscopes, line imaging and global or wide-field imaging. Finally, examples of biomedical applications are presented in the context of single cells, laser tweezers, tissue sections, biopsies and whole animals.
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http://dx.doi.org/10.1039/c5cs00564g | DOI Listing |
Nat Commun
January 2025
Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan.
Coherent Raman scattering spectroscopies have been established as a powerful tool for investigating molecular systems with high chemical specificity. The existing coherent Raman scattering techniques detect only Raman active modes, which are a part of the whole molecular vibrations. Here, we report the first observation of coherent anti-Stokes hyper-Raman scattering (CAHRS) spectroscopy, which allows measuring hyper-Raman active vibrations at high speed.
View Article and Find Full Text PDFCureus
December 2024
Department of Ophthalmology, Unidade Local de Saúde de São João, Porto, PRT.
Migraine, a neurological disorder often accompanied by symptoms such as visual disturbances, nausea, and photophobia, involves complex interactions between genetic and environmental factors, while vascular factors are also implicated, influenced by both genetic predisposition and environmental triggers. This case report discusses a 41-year-old male with a history of migraine with visual aura, presenting with sudden left-eye visual loss. Comprehensive ophthalmologic examination revealed a central scotoma, while multimodal imaging, including spectral-domain optical coherence tomography (SD-OCT), showed focal alterations in the outer plexiform layer.
View Article and Find Full Text PDFPsychiatry Res
February 2025
Department of Translation and Language Sciences, Universitat Pompeu Fabra, Barcelona, Spain; Catalan Institute for Advanced Studies and Research (ICREA), Barcelona, Spain.
Narrative speech production requires the retrieval of concepts to refer to entities, which need to be referenceable more than once for any form of narrative coherence to arise. Such coherence has long been observed to be affected in schizophrenia spectrum disorders (SSD), yet the underlying mechanisms have been a longstanding puzzle, with existing evidence predominantly derived from Indo-European languages. Here we analyzed two picture descriptions from 22 native Mandarin Chinese speakers with SSD and 15 healthy controls.
View Article and Find Full Text PDFJ Vitreoretin Dis
December 2024
Retina Department, Fundación Hospital de Nuestra Señora de La Luz, Mexico City, Mexico.
Retin Cases Brief Rep
October 2024
Department of Ophthalmology, Mayo Clinic, Rochester, MN, 55901.
Purpose: We describe a case of non-traumatic macular hole in a pediatric patient associated with numerous epiretinal lesions throughout the macula.
Methods: A healthy 9-year-old girl presented to retina clinic with several months of blurry vision in the right eye. Clinically, there was a full-thickness macular hole with serous detachment and white epiretinal tufts.
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