Analysis of basidiomycete pigments in situ by Raman spectroscopy.

abstract：:The sun protection factor (SPF) values are currently determined using an invasive procedure, in which the volunteers are irradiated with ultraviolet (UV) light. Non-invasive approaches based on hybrid diffuse reflectance spectroscopy (HDRS) have shown a good correlation with conventional SPF testing. Here, we present ...

journal_title：Journal of biophotonics

authors： Throm CM,Wiora G,Reble C,Schleusener J,Schanzer S,Karrer H,Kolbe L,Khazaka G,Meinke MC,Lademann J

更新日期：2020-10-06 00:00:00

abstract：:The investigation of lung dynamics on alveolar scale is crucial for the understanding and treatment of lung diseases, such as acute lung injury and ventilator induced lung injury, and to promote the development of protective ventilation strategies. One approach to this is the establishment of numerical simulations of ...

journal_title：Journal of biophotonics

authors： Kirsten L,Gaertner M,Schnabel C,Meissner S,Koch E

更新日期：2013-02-01 00:00:00

abstract：:Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease with a wide range of survival times. We aimed to explore prognostic factors related to short survival based on clinical features and plasma metabolic signatures using surface-enhanced Raman spectroscopy (SERS). One hundred and thirty-eight sporad...

journal_title：Journal of biophotonics

authors： Zhang QJ,Chen Y,Zou XH,Hu W,Lin XL,Feng SY,Chen F,Xu LQ,Chen WJ,Wang N

更新日期：2019-08-01 00:00:00

abstract：:Stimulated Raman scattering (SRS) microscopy is a label-free method generating images based on chemical contrast within samples, and has already shown its great potential for high-sensitivity and fast imaging of biological specimens. The capability of SRS to collect molecular vibrational signatures in bio-samples, cou...

journal_title：Journal of biophotonics

authors： Laptenok SP,Rajamanickam VP,Genchi L,Monfort T,Lee Y,Patel II,Bertoncini A,Liberale C

更新日期：2019-09-01 00:00:00

abstract：:Photoacoustic imaging (PAI) is a hybrid imaging modality with high resolution and sensitivity that can be beneficial for cancer staging. Due to insufficient endogenous photoacoustic (PA) contrast, the development of exogenous agents is critical in targeting cancerous tumors. The current study demonstrates the feasibil...

journal_title：Journal of biophotonics

authors： Nguyen VP,Park S,Oh J,Wook Kang H

更新日期：2017-08-01 00:00:00

abstract：:For the screening purposes urine is an especially attractive biofluid, since it offers easy and noninvasive sample collection and provides a snapshot of the whole metabolic status of the organism, which may change under different pathological conditions. Raman spectroscopy (RS) has the potential to monitor these chang...

journal_title：Journal of biophotonics

authors： Žukovskaja O,Ryabchykov O,Straßburger M,Heinekamp T,Brakhage AA,Hennings CJ,Hübner CA,Wegmann M,Cialla-May D,Bocklitz TW,Weber K,Popp J

更新日期：2020-01-01 00:00:00

abstract：:Hyperspectral imaging is a promising technique for resection margin assessment during cancer surgery. Thereby, only a specific amount of the tissue below the resection surface, the clinically defined margin width, should be assessed. Since the imaging depth of hyperspectral imaging varies with wavelength and tissue co...

journal_title：Journal of biophotonics

authors： Kho E,de Boer LL,Post AL,Van de Vijver KK,Jóźwiak K,Sterenborg HJCM,Ruers TJM

更新日期：2019-11-01 00:00:00

abstract：:Skin fibrosis is a chronic debilitating feature of several skin diseases that lead to characteristic increases in dermal fibroblast proliferation and collagen deposition through upregulation in components of the transforming growth factor beta (TGF-B)/SMAD pathway. In contrast to ultraviolet phototherapy, high-fluence...

journal_title：Journal of biophotonics

authors： Mamalis A,Koo E,Tepper C,Jagdeo J

更新日期：2019-05-01 00:00:00

abstract：:We fabricated composite nanoparticles consisting of a plasmonic core (gold nanorods or gold-silver nanocages) and a hematoporphyrin-doped silica shell. The dual photodynamic and photothermal activities of such nanoparticles against Staphylococcus aureus 209 P were studied and compared with the activities of reference ...

journal_title：Journal of biophotonics

authors： Khlebtsov BN,Tuchina ES,Khanadeev VA,Panfilova EV,Petrov PO,Tuchin VV,Khlebtsov NG

更新日期：2013-04-01 00:00:00

abstract：:The possibilities of using Mueller matrix (MM) imaging polarimetry to assess meat quality have not yet been sufficiently explored. In the current study, the fresh porcine muscles are imaged at room temperature with a wide-field MM imaging polarimeter over 26 hours to visualize dynamics of tissue optical properties thr...

journal_title：Journal of biophotonics

authors： Peyvasteh M,Popov A,Bykov A,Pierangelo A,Novikova T,Meglinski I

更新日期：2020-11-21 00:00:00

abstract：:Skin fibrosis, often referred to as skin scarring, is a significant international health problem with limited treatment options. The hallmarks of skin fibrosis are increased fibroblast proliferation, collagen production, and migration speed. Recently published clinical observations indicate that visible red light may ...

journal_title：Journal of biophotonics

authors： Mamalis A,Koo E,Garcha M,Murphy WJ,Isseroff RR,Jagdeo J

更新日期：2016-12-01 00:00:00

abstract：:Noninvasive body shaping is becoming a growing demand. The aim of this study was to investigate the efficacy and safety of the combined treatments of 1064 nm Nd:YAG and 2940 nm Er:YAG in noninvasive lipolysis and skin tightening. Ten females were enrolled, and all women's side of the waist or the lower part of the abd...

journal_title：Journal of biophotonics

authors： Vas K,Besenyi Z,Urbán S,Badawi A,Pávics L,Erős G,Kemény L

更新日期：2019-09-01 00:00:00

abstract：:A Monte Carlo simulation was adapted to specify a skin model with pigmented epidermis, dermis with low baseline blood content, and vessels of a vascular lesion with an average added blood volume fraction of 5%. In the study, the lesion vessel diameters were increased and the number of lesion vessels decreased, such th...

journal_title：Journal of biophotonics

authors： Jacques SL

更新日期：2010-01-01 00:00:00

abstract：:The class of PEGylated emulsifiers finds broad application in the pharmaceutical and cosmetic industry. We target on one of the categories of polyethylene glycol (PEG) alkyl ethers with different lipophilic and hydrophilic chain length and aim to examine their effects on the skin comprehensively. In this study, we emp...

journal_title：Journal of biophotonics

authors： Liu Y,Lunter DJ

更新日期：2020-12-01 00:00:00

abstract：:5-aminolevulinic acid (ALA) and its methylated ester (MAL) are the most common topical agents used in photodynamic therapy (PDT) as precursors of the photosensitizer protoporphyrin IX (PpIX). The induction of newly PpIX depends on incubation time of each photosensitizer in the tissue and the presence of high intralesi...

journal_title：Journal of biophotonics

authors： Lima CA,Goulart VP,Bechara EJ,Correa L,Zezell DM

更新日期：2016-12-01 00:00:00

abstract：:We report on transient membrane perforation of living cancer cells using plasmonic gold nanoparticles (AuNPs) enhanced single near infrared (NIR) femtosecond (fs) laser pulse. Under optimized laser energy fluence, single pulse treatment (τ = 45 fs, λ = 800 nm) resulted in 77% cell perforation efficiency and 90% cell v...

journal_title：Journal of biophotonics

authors： Boutopoulos C,Bergeron E,Meunier M

更新日期：2016-01-01 00:00:00

abstract：:Low-power laser irradiation (LPLI) has been extensively employed to modulate inflammation in vitro and in vivo. Previous reports from our group indicated that LPLI might regulate glycemia in diabetic animals. Diabetes results in chronic hyperglycemia and therefore chronic inflammation by upregulation of inflammatory m...

journal_title：Journal of biophotonics

authors： Fukuoka CY,Torres Schröter G,Nicolau J,Simões A

更新日期：2016-12-01 00:00:00

abstract：:Current elastography techniques are limited in application to accurately assess spatially resolved corneal elasticity in vivo for human eyes. The air-puff optical coherence elastography (OCE) with an eye motion artifacts correction algorithm is developed to distinguish the in vivo cornea vibration from the eye motion ...

journal_title：Journal of biophotonics

authors： Jin Z,Chen S,Dai Y,Bao C,Ye S,Zhou Y,Wang Y,Huang S,Wang Y,Shen M,Zhu D,Lu F

更新日期：2020-08-01 00:00:00

abstract：:Photodynamic inactivation of bacteria (PDIB) is considered a new approach for the struggle against multiresistant bacteria. To achieve a sufficient level of bacteria killing, the photosensitizer must attach to and/or penetrate the bacteria and generate a sufficiently high amount of singlet oxygen. To optimize PDIB, th...

journal_title：Journal of biophotonics

authors： Regensburger J,Maisch T,Felgenträger A,Santarelli F,Bäumler W

更新日期：2010-06-01 00:00:00

abstract：:Bacterial meningitis is a disease of pronounced clinical significance, especially in the developing world. Immediate treatment with antibiotics is essential, and no single test can provide a conclusive diagnosis. It is well established that elevated total protein in cerebrospinal fluid (CSF) is associated with bacteri...

journal_title：Journal of biophotonics

authors： Steelman Z,Meng Z,Traverso AJ,Yakovlev VV

更新日期：2015-05-01 00:00:00

abstract：:Monitoring living cells in real-time is important in order to unravel complex dynamic processes in life sciences. In particular the dynamics of initiation and progression of degenerative diseases is intensely studied. In atherosclerosis the thickening of arterial walls is related to high lipid levels in the blood stre...

journal_title：Journal of biophotonics

authors： Stiebing C,Meyer T,Rimke I,Matthäus C,Schmitt M,Lorkowski S,Popp J

更新日期：2017-09-01 00:00:00

abstract：:A plastic optical fibre biosensor based on surface plasmon resonance for the detection of C-reactive protein (CRP) in serum is proposed. The biosensor was integrated into a home-made thermo-stabilized microfluidic system that allows avoiding any thermal and/or mechanical fluctuation and maintaining the best stable con...

journal_title：Journal of biophotonics

authors： Aray A,Chiavaioli F,Arjmand M,Trono C,Tombelli S,Giannetti A,Cennamo N,Soltanolkotabi M,Zeni L,Baldini F

更新日期：2016-10-01 00:00:00

abstract：:Since stimulated emission depletion (STED) nanoscopy was invented in 1994, this technique has been widely used in the fields of biomedicine and materials science. According to the imaging principle of STED technology, increasing the power of the depletion laser within a certain threshold can improve the resolution. Ho...

journal_title：Journal of biophotonics

authors： Wang J,Wang L,Zhang J,Yang Z,Yan W,Qu J

更新日期：2020-12-13 00:00:00

abstract：:One pertinent complication in bacterial infection is the growth of biofilms, that is, communities of surface-adhered bacteria resilient to antibiotics. Photodynamic inactivation (PDI) has been proposed as an alternative to antibiotic treatment; however, novel techniques complementing standard efficacy measures are req...

journal_title：Journal of biophotonics

authors： Thomsen H,Graf FE,Farewell A,Ericson MB

更新日期：2018-10-01 00:00:00

abstract：:Optical spectroscopy of a single gold nanoparticle, functionalized with an aptamer, is used to sense the specific binding of avidin. Herewith, the field of single noble metal nanoparticle biosensors is extended to the important field of aptamer based assays. The sensitivity of this initial, but not yet optimized apta-...

journal_title：Journal of biophotonics

authors： Hernandez FJ,Dondapati SK,Ozalp VC,Pinto A,O'Sullivan CK,Klar TA,Katakis I

更新日期：2009-04-01 00:00:00

abstract：:Quantification of the mucosa oxygenation levels during Endoscopic imaging provides useful physiological/diagnostic information. In this work a method for non-contact quantification of the oxygen saturation index during Endoscopic imaging using three discrete spectral-band in the blue, the green, and the red parts of t...

journal_title：Journal of biophotonics

authors： Fawzy Y

更新日期：2009-12-01 00:00:00

abstract：:We report the use of ultrasound modulated optical tomography (UOT) with heterodyne parallel detection to locally sense and image blood flow deep inside a highly scattering medium. We demonstrate that the UOT signal is sensitive to the speed of the blood flow in the ultrasound focus and present an analytical model that...

journal_title：Journal of biophotonics

authors： Hussain A,Steenbergen W,Vellekoop IM

更新日期：2018-01-01 00:00:00

abstract：:We develop a confocal system equipped with optimal elliptical apertures to improve axial point spread function and signal-to-background ratio (SBR) for different detector sizes. By adjusting the parameters of the elliptical apertures, the axial half width at half-maximum can be reduced to 4.986 (described in optical c...

journal_title：Journal of biophotonics

authors： Tang H,Wu C,Gong W,Zheng Y,Zhu X,Wang J,Si K

更新日期：2018-05-01 00:00:00

abstract：:We suggest to use a combination of optical tweezers and single-image quantitative differential interference contrast (DIC) emulated by a spatial light modulator (SLM) to study physiological shape changes in thrombocytes after activation and demonstrate the effectiveness of this system for the given task. A specially d...

journal_title：Journal of biophotonics

authors： Khan S,Jesacher A,Nussbaumer W,Bernet S,Ritsch-Marte M

更新日期：2011-09-01 00:00:00

abstract：:We have developed a reflection-mode switchable subwavelength Bessel-beam (BB) and Gaussian-beam (GB) photoacoustic microscopy (PAM) system. To achieve both reflection-mode and high resolution, we tightly attached a very small ultrasound transducer to an optical objective lens with numerical aperture of 1.0 and working...

journal_title：Journal of biophotonics

authors： Park B,Lee H,Jeon S,Ahn J,Kim HH,Kim C

更新日期：2019-02-01 00:00:00