共查询到20条相似文献,搜索用时 15 毫秒
1.
Inside Cover: Internalization kinetics and cytoplasmic localization of functionalized diatomite nanoparticles in cancer cells by Raman imaging (J. Biophotonics 4/2018) 下载免费PDF全文
Stefano Managò Nunzia Migliaccio Monica Terracciano Michela Napolitano Nicola M. Martucci Luca De Stefano Ivo Rendina Anna Chiara De Luca Annalisa Lamberti Ilaria Rea 《Journal of biophotonics》2018,11(4)
The internalization kinetics and intracellular spatial distribution of functionalized diatomite nanoparticles in human lung epidermoid carcinoma cell line have been investigated by confocal fluorescence and Raman microscopy. In this context, Raman imaging due to its non‐destructive, chemically selective and label‐free working principle provides evidence that the nanovectors are internalized and co‐localize with lipid environments, suggesting an endocytic internalisation route. Nanoparticle uptakes and intracellular persistence are observed up to 72 hours, without damage to cell viability or morphology. Further details can be found in the article by Stefano Managò et al. ( e201700207 )
2.
Inside Back Cover: The conformation of bovine serum albumin adsorbed to the surface of single all‐dielectric nanoparticles following light‐induced heating (J. Biophotonics 7/2018) 下载免费PDF全文
Andrei A. Krasilin Katerina Volodina Arina A. Sukhova Mihail I. Petrov Dmitry A. Zuev Vyacheslav A. Dyachuk Valentin A. Milichko 《Journal of biophotonics》2018,11(7)
Germanium vs Silicon: All‐dielectric nanoparticles provides the heat resistance for proteins under light‐induced heating. Further details can be found in the article by Andrei A. Krasilin et al. ( e201700322 )
3.
Back Cover: Prolonged in vivo functional assessment of the mouse oviduct using optical coherence tomography through a dorsal imaging window (J. Biophotonics 5/2018) 下载免费PDF全文
Optical coherence tomography through an implanted dorsal imaging window allows for prolonged in vivo structural and functional assessment of the mouse oviduct (Fallopian tube), including threedimensional structural imaging, quantitative measurements of the smooth muscle contraction, and mapping of cilia beat frequency. This method brings new opportunities for live studies and longitudinal analyses of mouse reproductive events in the native context. Further details can be found in the article by Shang Wang et al. ( e201700316 ).
4.
Inside Back Cover: In vivo full‐field functional optical hemocytometer (J. Biophotonics 2/2018) 下载免费PDF全文
Fuli Zhang Mingyi Wang Dingan Han Haishu Tan Guojian Yang Yaguang Zeng 《Journal of biophotonics》2018,11(2)
Full‐field functional optical hemocytometer (FFOH), based on the absorption intensity fluctuation modulation (AIFM) effect, is in vivo label‐free image method for capillaries of near‐transparent live biological specimens. FFOH can provide a flow video, flow velocity measurement and RBC count, simultaneously. The zebrafish experimental result shows the potential to study the physiological mechanisms of the blood circulation systems. Further details can be found in the article by Fuli Zhang et al. ( e201700039 )
5.
Inside Front Cover: Combining hyperspectral imaging and chemometrics to assess and interpret the effects of environmental stressors on zebrafish eye images at tissue level (J. Biophotonics 3/2018) 下载免费PDF全文
Víctor Olmos Mònica Marro Pablo Loza‐Alvarez Demetrio Raldúa Eva Prats Francesc Padrós Benjamin Piña Romà Tauler Anna de Juan 《Journal of biophotonics》2018,11(3)
Raman images were used to study the effect of the contaminant chlorpyriphos‐oxon on zebrafish eye samples. Multivariate Curve Resolution‐Alternating Least Squares (MCR‐ALS) was used to obtain the distribution maps and spectral signatures of biological components present in the images analyzed. The use of MCRALS spectral signatures as starting information for Partial Least Squares‐Discriminant Analysis allowed statistical assessment of the effect of the contaminant at a specific tissue level. Further details can be found in the article by Víctor Olmos et al. ( e201700089 ).
6.
Inside Back Cover: Development of a 3‐dimensional tissue lung phantom of a preterm infant for optical measurements of oxygen—Laser‐detector position considerations (J. Biophotonics 3/2018) 下载免费PDF全文
Jim Larsson Peilang Liao Patrik Lundin Emilie Krite Svanberg Johannes Swartling Märta Lewander Xu Joakim Bood Stefan Andersson‐Engels 《Journal of biophotonics》2018,11(3)
The picture depicts the different 3d‐printed organs, thorax, lungs, heart and bone. Assembled it is used as an optical phantom of a preterm infant for performing percutaneous optical measurements of the gas content in the lungs. In order to simulate the optical properties of the tissue, the heart and thorax can be filled with liquid phantoms, a mixture of Intralipid and Indian Ink. Further details can be found in the article by Jim Larsson et al. ( e201700097 ).
7.
Inside Back Cover: Multiphoton dynamic imaging of the effect of chronic hepatic diseases on hepatobiliary metabolism in vivo (J. Biophotonics 9/2018) 下载免费PDF全文
Chih‐Ju Lin Sheng‐Lin Lee Wei‐Hsiang Wang Vladimir A. Hovhannisyan Yao‐De Huang Hsuan‐Shu Lee Chen‐Yuan Dong 《Journal of biophotonics》2018,11(9)
In vivo multiphoton imaging was used to map changes in hepatobiliary metabolism in liver fibrosis (left column) and hepatocellular carcinoma (right column). The top row shows the maps of kinetic rate constant of the uptake and esterase processing while the bottom row shows that of bile canalicular excretion of xenobiotics. Further details can be found in the article by Chih‐Ju Lin, Sheng‐Lin Lee, Wei‐Hsiang Wang, et al. ( e201700338 ).
8.
Back Cover: Non‐invasive optical method for real‐time assessment of intracorneal riboflavin concentration and efficacy of corneal cross‐linking (J. Biophotonics 7/2018) 下载免费PDF全文
Giuseppe Lombardo Valentina Villari Norberto L. Micali Nancy Leone Cristina Labate Maria P. De Santo Marco Lombardo 《Journal of biophotonics》2018,11(7)
We disclose a theranostic device for performing image‐guided riboflavin/UV‐A corneal cross‐linking. The device determines treatment efficacy by real time monitoring of riboflavin concentration in the corneal stroma. The study shows efficacy of the device in eye bank human donor tissues. Further details can be found in the article by Giuseppe Lombardo et al. ( e201800028 )
9.
Nanoscopy enables breaking down the light diffraction limit and reveals the nanostructures of objects being studied using light. In 2014, three scientists pioneered the development of nanoscopy and won the Nobel Prize in Chemistry. This recognized the achievement of the past twenty years in the field of nanoscopy. However, fluorescent probes used in the field of nanoscopy are still numbered. Here, we review the currently available four categories of probes and existing methods to improve the performance of probes.
10.
A method to study the hemodynamics of chicken embryo's aortic arches using optical coherence tomography 下载免费PDF全文
Zhen Yu Gordon Ko Kalpesh Mehta Muhammad Jamil Choon Hwai Yap Nanguang Chen 《Journal of biophotonics》2017,10(3):353-359
Congenital cardiovascular defects are the leading cause of birth defect related death. It has been hypothesized that fluid mechanical forces of embryonic blood flow affect cardiovascular development and play a role in congenital malformations. Studies in small animal embryos can improve our understanding of congenital malformations and can lead to better treatment. We present a feasibility study in which high‐resolution optical coherence tomography (OCT) and computational fluid dynamics (CFD) are combined to provide quantitative analysis of the embryonic flow mechanics and the associated anatomy in a small animal model.
11.
Inside Front Cover: Selective and sensitive Escherichia coli detection based on a T4 bacteriophage‐immobilized multimode microfiber (J. Biophotonics 9/2018) 下载免费PDF全文
Yanpeng Li Hui Ma Lin Gan Andong Gong Haibin Zhang Deming Liu Qizhen Sun 《Journal of biophotonics》2018,11(9)
Sensitive Escherichia coli detection based on a T4 bacteriophageimmobilized multimode microfiber is proposed and demonstrated in this article. Different modes are excited and guided in the microfiber as evanescent field that can interact with surrounding E. coli directly. The change of E. coli concentration and corresponding binding of E. coli on microfiber surface will lead to the shift of optical spectrum, which can be exploited for the application of biosensing. Further details can be found in the article by Yanpeng Li, Hui Ma, Lin Gan, et al. ( e201800012 ).
12.
Front Cover: Photoluminescence intensity ratio of Eu‐conjugated lactates—A simple optical imaging technique for biomarker analysis for critical diseases (J. Biophotonics 5/2018) 下载免费PDF全文
Tarun Kakkar Nikita Thomas Eric Kumi‐Barimah Gin Jose Sikha Saha 《Journal of biophotonics》2018,11(5)
Eu3+integrated photoluminescence intensity ratio (PLIR) approach for optical detection of lactates in blood serum, plasma and confocal imaging of brain tissues has very high potential for exploitation of this technique in both in vitro monitoring and in vivo bioimaging applications for the detection of biomarkers in various diseases states. This image is diagrammatic representation of fact that the overall PLIR is higher with more lactates conjugated with Eu3+ ions. Further details can be found in the article by Tarun Kakkar et al. ( e201700199 ).
13.
Back Cover: Protein secondary structure analysis of dried blood serum using infrared spectroscopy to identify markers for colitis screening (J. Biophotonics 3/2018) 下载免费PDF全文
Jitto Titus Hemendra Ghimire Emilie Viennois Didier Merlin A. G. Unil Perera 《Journal of biophotonics》2018,11(3)
Protein secondary structural alteration in the serum sample as induced by colitis has been demonstrated via the spectral fitting. Using DSS mouse models of acute colitis and IL10‐/‐ for chronic colitis, a significant difference in the integral ratio of Gaussian energy bands representing α‐helix and β‐pleated sheet structures were obtained. Further details can be found in the article by Jitto Titus et al. ( e201700057 ).
14.
Hassaan Majeed Shamira Sridharan Mustafa Mir Lihong Ma Eunjung Min Woonggyu Jung Gabriel Popescu 《Journal of biophotonics》2017,10(2):177-205
Optical microscopy is an indispensable diagnostic tool in modern healthcare. As a prime example, pathologists rely exclusively on light microscopy to investigate tissue morphology in order to make a diagnosis. While advances in light microscopy and contrast markers allow pathologists to visualize cells and tissues in unprecedented detail, the interpretation of these images remains largely subjective, leading to inter‐ and intra‐observer discrepancy. Furthermore, conventional microscopy images capture qualitative information which makes it difficult to automate the process, reducing the throughput achievable in the diagnostic workflow. Quantitative Phase Imaging (QPI) techniques have been advanced in recent years to address these two challenges. By quantifying physical parameters of cells and tissues, these systems remove subjectivity from the disease diagnosis process and allow for easier automation to increase throughput. In addition to providing quantitative information, QPI systems are also label‐free and can be easily assimilated into the current diagnostic workflow in the clinic. In this paper we review the advances made in disease diagnosis by QPI techniques. We focus on the areas of hematological diagnosis and cancer pathology, which are the areas where most significant advances have been made to date.
15.
Direct and label‐free detection of the human growth hormone in urine by an ultrasensitive bimodal waveguide biosensor 下载免费PDF全文
Ana Belén González‐Guerrero Jesús Maldonado Stefania Dante Daniel Grajales Laura M. Lechuga 《Journal of biophotonics》2017,10(1):61-67
A label‐free interferometric transducer showing a theoretical detection limit for homogeneous sensing of 5 × 10–8 RIU, being equivalent to a protein mass coverage resolution of 2.8 fg mm–2, is used to develop a high sensitive biosensor for protein detection. The extreme sensitivity of this transducer combined with a selective bioreceptor layer enables the direct evaluation of the human growth hormone (hGH) in undiluted urine matrix in the 10 pg mL–1 range.
16.
Photoconversion, an irreversible shift in a fluorophore emission spectrum after light exposure, is a powerful tool for marking cellular and subcellular compartments and tracking their dynamics in vivo. This paper reports on the photoconversion properties of Di‐8‐ANEPPS, a commercially available membrane dye. When illuminated with near‐infrared femtosecond laser pulses, Di‐8‐ANEPPS undergoes multiphoton photoconversion as indicated by the supralinear dependence of the conversion rate ρpc on the incident power (), and by the ability to photoconvert a thin optical section in a three‐dimensional matrix. The characteristic emission spectrum changed from red to blue, and ratiometric analysis on single cells in vitro revealed a 65‐fold increase in the blue to red wavelength ratio after photoconversion. The spectral shift is preserved in vivo for hours, making Di‐8‐ANEPPS a useful dye for intravital cell marking and tracking applications.
17.
Front Cover: Spectrally encoded coherence tomography and reflectometry: Simultaneous en face and cross‐sectional imaging at 2 gigapixels per second (J. Biophotonics 4/2018) 下载免费PDF全文
SECTR is a novel multimodal imaging platform for combined volumetric optical coherence tomography (OCT) and en face spectrally encoded reflectometry (SER). The authors demonstrate three‐dimensional motion‐tracking with millisecond temporal and micron spatial resolution using complementary data from OCT and SER, and preliminary algorithms and results showing real‐time image aiming and multi‐volumetric mosaicking for reconstruction of wide‐field composites. The image shows a noninvasively imaged nine‐field mosaic of in vivo human retina and depth‐resolved visualization of tissue microstructures. Further details can be found in the article by Mohamed T. El‐Haddad, Ivan Bozic, and Yuankai K. Tao ( e201700268 )
18.
Back Cover: Characterization and application of porous gold nanoparticles as 2‐photon luminescence imaging agents: 20‐fold brighter than gold nanorods (J. Biophotonics 2/2018) 下载免费PDF全文
Joo H. Park Jisoo Park Suho Kim Se‐Hwa Kim Tae G. Lee Jae Y. Lee Jung‐Sub Wi 《Journal of biophotonics》2018,11(2)
Gold nanoparticles serve as imaging contrast agents useful for two‐photon nonlinear microscopy of biological cells and tissues. In this study, 100‐nm‐sized gold particles with a multitude of nanopores embedded inside have been physically synthesized and investigated for the plasmonic enhancement in two‐photon luminescence. Exhibiting remarkable potential for two‐photon imaging, the porous gold nanoparticles boost near‐infrared light absorption substantially and allow emission signals 20 times brighter than gold nanorods being currently used as typical imaging agents. Further details can be found in the article by Joo H. Park et al. ( e201700174 )
19.
Front Cover: Dual‐wavelength hybrid optoacoustic‐ultrasound biomicroscopy for functional imaging of large‐scale cerebral vascular networks (J. Biophotonics 9/2018) 下载免费PDF全文
Johannes Rebling Héctor Estrada Sven Gottschalk Gali Sela Michael Zwack Georg Wissmeyer Vasilis Ntziachristos Daniel Razansky 《Journal of biophotonics》2018,11(9)
We present a hybrid dual‐wavelength optoacoustic and ultrasound bio‐microscope capable of rapid transcranial visualization of morphology and oxygenation status of large‐scale cerebral vascular networks. Imaging of entire cortical vasculature in mice is achieved with single capillary resolution and complemented by simultaneously acquired pulse‐echo ultrasound microscopy scans of the mouse skull. The new approach holds potential to facilitate studies into neurological and vascular abnormalities of the brain. Further details can be found in the article by Johannes Rebling, Héctor Estrada, Sven Gottschalk, et al. ( e201800057 ).
20.
Front Cover: Ultraviolet radiation oxidative stress affects eye health (J. Biophotonics 7/2018) 下载免费PDF全文
Iliya V. Ivanov Timo Mappes Patrick Schaupp Christian Lappe Siegfried Wahl 《Journal of biophotonics》2018,11(7)
The role of ultraviolet radiation in oxidative stress‐related ocular pathologies is less known than its role in skin cancer. Excessive exposure to ultraviolet radiation is associated with increased oxidative stress in eye tissues, which may promote the development of photokeratitis, cataract, and retinal damages. Children are especially vulnerable: large pupils, transparent ocular media. Efficient everyday protection of the eye should be considered from early age. (Image: with permission from Carl Zeiss Vision International GmbH, Aalen, Germany) Further details can be found in the article by Iliya V. Ivanov, Timo Mappes, Patrick Schaupp, et al. ( e201700377 ).