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Plavskii VY, Sobchuk AN, Mikulich AV, Dudinova ON, Plavskaya LG, Tretyakova AI, Nahorny RK, Ananich TS, Svechko AD, Yakimchuk SV, Leusenka IA. Identification by methods of steady-state and kinetic spectrofluorimetry of endogenous porphyrins and flavins sensitizing the formation of reactive oxygen species in cancer cells. Photochem Photobiol 2024. [PMID: 38258972 DOI: 10.1111/php.13911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/20/2023] [Accepted: 01/09/2024] [Indexed: 01/24/2024]
Abstract
The question about acceptor molecules of optical radiation that determine the effects of photobiomodulation in relation to various types of cells still remains the focus of attention of researchers. This issue is most relevant for cancer cells, since, depending on the parameters of optical radiation, light can either stimulate their growth or inhibit them and lead to death. This study shows that endogenous porphyrins, which have sensitizing properties, may play an important role in the implementation of the effects of photobiomodulation, along with flavins. For the first time, using steady-state and kinetic spectrofluorimetry, free-base porphyrins and their zinc complexes were discovered and identified in living human cervical epithelial carcinoma (HeLa) cells, as well as in their extracts. It has been shown that reliable detection of porphyrin fluorescence in cells is hampered by the intense fluorescence of flavins due to their high concentration (micromolar range) and higher (compared to tetrapyrroles) fluorescence quantum yield. Optimization of the spectral range of excitation and the use of extractants that provide multiple quenching of the flavin component while increasing the emission efficiency of tetrapyrroles makes it possible to weaken the contribution of the flavin component to the recorded fluorescence spectra.
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Affiliation(s)
- Vitaly Yu Plavskii
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
| | - Andrei N Sobchuk
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
| | - Aliaksandr V Mikulich
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
| | - Olga N Dudinova
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
| | - Ludmila G Plavskaya
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
| | - Antonina I Tretyakova
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
| | - Raman K Nahorny
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
| | - Tatsiana S Ananich
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
| | - Alexei D Svechko
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
| | - Sergey V Yakimchuk
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
| | - Ihar A Leusenka
- State Scientific Institution "B.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", Minsk, Belarus
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2
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Potrich AR, Só BB, Schuch LF, Wagner VP, Silveira FM, de Abreu Alves F, Prado-Ribeiro AC, Santos-Silva AR, Treister NS, Martins MD, Martins MAT. Impact of photobiomodulation for prevention of oral mucositis on the quality of life of patients with head and neck cancer: a systematic review. Lasers Med Sci 2023; 39:1. [PMID: 38057605 DOI: 10.1007/s10103-023-03940-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 11/15/2023] [Indexed: 12/08/2023]
Abstract
The aim of this study was to perform a systematic review to evaluate the impact of photobiomodulation therapy (PBMT) for the prevention of oral mucositis (OM) on the quality of life (QoL) of patients with head and neck cancer (HNC) undergoing radiation therapy. This study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines. The search strategy was performed in five electronic databases (Cochrane, Embase, PubMed, Scopus, and Web of Science). The included studies assessed the QoL of patients undergoing radiation therapy (RT) for HNC and undergoing PBMT for the management of OM. Seven articles met the eligibility criteria. Data extraction was performed in the selected studies including the PBMT parameters (active medium, application procedure, wavelength, fluence, power, irradiance, irradiation time, spot size, energy per point, schedule of irradiation, and total energy). The included studies were qualitatively analyzed, and descriptive analyses were performed. Also, summary results were evaluated for group comparison analysis. All included studies confirmed a decrease in the QoL of the patients that developed OM throughout the RT progress when compared to baseline. Of the informed cases, most of the patients who received PBMT showed grades 1 and 2 OM, while the control group showed more individuals with severe forms of OM (grades 3 and 4). In this sense, patients submitted to PBMT reported better QoL at the end of the treatment compared with the control group. PBMT used for the management of OM preserves the QoL of patients with head and neck cancer.
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Affiliation(s)
- Ana Rita Potrich
- Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Bruna Barcelos Só
- Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Lauren Frenzel Schuch
- Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Molecular Pathology Area, School of Dentistry, Universidad de la República, Montevideo, Uruguay
| | | | - Felipe Martins Silveira
- Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Molecular Pathology Area, School of Dentistry, Universidad de la República, Montevideo, Uruguay
| | | | - Ana Carolina Prado-Ribeiro
- Dental Oncology Service, Instituto do Câncer do Estado de São Paulo, São Paulo, SP, Brazil
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Alan Roger Santos-Silva
- Department of Oral Diagnosis, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil
| | - Nathaniel Simon Treister
- Division of Oral Medicine and Dentistry, Brigham and Women's Hospital, Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Manoela Domingues Martins
- Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
- Department of Oral Medicine, Hospital de Clínicas de Porto Alegre (HCPA/UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
| | - Marco Antonio Trevizani Martins
- Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
- Department of Oral Medicine, Hospital de Clínicas de Porto Alegre (HCPA/UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
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3
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Thammasart S, Namchaiw P, Pasuwat K, Tonsomboon K, Khantachawana A. Attenuation Aβ1-42-induced neurotoxicity in neuronal cell by 660nm and 810nm LED light irradiation. PLoS One 2023; 18:e0283976. [PMID: 37478089 PMCID: PMC10361470 DOI: 10.1371/journal.pone.0283976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 03/21/2023] [Indexed: 07/23/2023] Open
Abstract
Oligomeric amyloid-β 1-42 (Aβ1-42) has a close correlation with neurodegenerative disorder especially Alzheimer's disease (AD). It induces oxidative stress and mitochondrial damage in neurons. Therefore, it is used to generate AD-like in vitro model for studying neurotoxicity and neuroprotection against amyloid-β. A low-level light therapy (LLLT) is a non-invasive method that has been used to treat several neurodegenerative disorders. In this study, the red wavelength (660nm) and near infrared wavelength (810nm) at energy densities of 1, 3, and 5 J/cm2 were used to modulate biochemical processes in the neural cells. The exposure of Aβ1-42 resulted in cell death, increased intracellular reactive oxygen species (ROS), and retracted neurite outgrowth. We showed that both of LLLT wavelengths could protect neurons form Aβ1-42-induced neurotoxicity in a biphasic manner. The treatment of LLLT at 3 J/cm2 potentially alleviated cell death and recovered neurite outgrowth. In addition, the treatment of LLLT following Aβ1-42 exposure could attenuate the intracellular ROS generation and Ca2+ influx. Interestingly, both wavelengths could induce minimal level of ROS generation. However, they did not affect cell viability. In addition, LLLT also stimulated Ca2+ influx, but not altered mitochondrial membrane potential. This finding indicated LLLT may protect neurons through the stimulation of secondary signaling messengers such as ROS and Ca2+. The increase of these secondary messengers was in a functional level and did not harmful to the cells. These results suggested the use of LLLT as a tool to modulate the neuronal toxicity following Aβ1-42 accumulation in AD's brain.
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Affiliation(s)
- Siriluk Thammasart
- Biological Engineering Program, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Thung Kru, Bangkok, Thailand
| | - Poommaree Namchaiw
- Biological Engineering Program, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Thung Kru, Bangkok, Thailand
- Neuroscience Center for Research and Innovation, Learning Institute, King Mongkut's University of Technology Thonburi (KMUTT), Thung Kru, Bangkok, Thailand
| | - Kwanchanok Pasuwat
- Biological Engineering Program, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Thung Kru, Bangkok, Thailand
- Department of Chemical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Thung Kru, Bangkok, Thailand
| | - Khaow Tonsomboon
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Anak Khantachawana
- Biological Engineering Program, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Thung Kru, Bangkok, Thailand
- Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi (KMUTT), Thung Kru, Bangkok, Thailand
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Camphausen R, Sansa Perna A, Cuevas Á, Demuth A, Arrés Chillón J, Gräfe M, Steinlechner F, Pruneri V. Fast quantum-enhanced imaging with visible-wavelength entangled photons. OPTICS EXPRESS 2023; 31:6039-6050. [PMID: 36823870 DOI: 10.1364/oe.471429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 01/04/2023] [Indexed: 06/18/2023]
Abstract
Quantum resources can provide supersensitive performance in optical imaging. Detecting entangled photon pairs from spontaneous parametric down conversion (SPDC) with single-photon avalanche diode (SPAD) image sensor arrays (ISAs) enables practical wide-field quantum-enhanced imaging. However, matching the SPDC wavelength to the peak detection efficiency range of complementary metal-oxide-semiconductor (CMOS) compatible mass-producible SPAD-ISAs has remained technologically elusive, resulting in low imaging speeds to date. Here, we show that a recently developed visible-wavelength entangled photon source enables high-speed quantum imaging. By operating at high detection efficiency of a SPAD-ISA, we increase acquisition speed by more than an order of magnitude compared to previous similar quantum imaging demonstrations. Besides being fast, the quantum-enhanced phase imager operating at short wavelengths retrieves nanometer scale height differences, tested by imaging evaporated silica and protein microarray spots on glass samples, with sensitivity improved by a factor of 1.351 ± 0.004 over equivalent ideal classical imaging. This work represents an important stepping stone towards scalable real-world quantum imaging advantage, and may find use in biomedical and industrial applications as well as fundamental research.
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5
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Nie F, Hao S, Ji Y, Zhang Y, Sun H, Will M, Han W, Ding Y. Biphasic dose response in the anti-inflammation experiment of PBM. Lasers Med Sci 2023; 38:66. [PMID: 36749428 DOI: 10.1007/s10103-022-03664-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 10/22/2022] [Indexed: 02/08/2023]
Abstract
Non-invasive laser irradiation can induce photobiomodulation (PBM) effects in cells and tissues, which can help reduce inflammation and pain in several clinical scenarios. The purpose of this study is to review the current literature to verify whether PBM can produce dose effects in anti-inflammatory experiments by summarizing the clinical and experimental effects of different laser parameters of several diseases. The so-called Arndt-Schulz curve is often used to describe two-phase dose reactions, assuming small doses of therapeutic stimulation, medium doses of inhibition, and large doses of killing. In the past decade, more and more attention has been paid to the clinical application of PBM, especially in the field of anti-inflammation, because it represents a non-invasive strategy with few contraindications. Although there are different types of lasers available, their use is adjusted by different parameters. In general, the parameters involved are wavelength, energy density, power output, and radiation time. However, due to the biphasic effect, the scientific and medical communities remain puzzled by the ways in which the application of PBM must be modified depending on its clinical application. This article will discuss these parameter adjustments and will then also briefly introduce two controversial theories of the molecular and cellular mechanisms of PBM. A better understanding of the extent of dualistic dose response in low-intensity laser therapy is necessary to optimize clinical treatment. It also allows us to explore the most dependable mechanism for PBM use and, ultimately, standardize treatment for patients with various diseases.
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Affiliation(s)
- Fang Nie
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Shaolong Hao
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yu Ji
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
- Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yan Zhang
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Hao Sun
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Melissa Will
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Wei Han
- Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China.
- Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China.
| | - YuChuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.
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Blanco-Prieto O, Maside C, Àlex Peña, Ibáñez-Príncep J, Bonet S, Yeste M, Rodríguez-Gil JE. The effects of red LED light on pig sperm function rely upon mitochondrial electron chain activity rather than on a PKC-mediated mechanism. Front Cell Dev Biol 2022; 10:930855. [PMID: 36274839 PMCID: PMC9585505 DOI: 10.3389/fcell.2022.930855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 09/12/2022] [Indexed: 12/04/2022] Open
Abstract
While irradiation with red LED light has been reported to modulate sperm function in different mammalian species, the mechanisms underlying their response are poorly understood. This work sought to provide new insights into whether this effect relies on a direct action upon mitochondrial electron chain and/or on PKC-linked mechanisms such as those related to opsins. For this purpose, pig semen was light-stimulated for 1, 5 or 10 min in the presence/absence of antimycin A, an inhibitor of the mitochondrial electron chain, or PKC 20–28® (PKCi), a PKC inhibitor. Antimycin A completely blocked the effects of light at all the performed irradiation patterns. This effect was linked to a complete immobility of sperm, which was accompanied with a significant (p < 0.05) drop in several markers of mitochondrial activity, such as JC-1 staining and O2 consumption rate. Antimycin A, however, did not affect intracellular ATP levels, intramitochondrial calcium, total ROS, superoxides or cytochrome C oxidase (CCO) activity. In the case of PKCi, it did also counteract the effects of light on motility, O2 consumption rate and CCO activity, but not to the same extent than that observed for antimycin A. Finally, the effects observed when sperm were co-incubated with antimycin A and PKCi were similar to those observed with antimycin A alone. In conclusion, red LED light acts on sperm function via a direct effect on mitochondrial electron chain. Additionally, light-activated PKC pathways have a supplementary effect to that observed in the electron chain, thereby modulating sperm parameters such as motility and CCO activity.
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7
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Fluks M, Tamborski S, Szkulmowski M, Ajduk A. Optical coherence microscopy allows for quality assessment of immature mouse oocytes. Reproduction 2022; 164:83-95. [PMID: 35900349 DOI: 10.1530/rep-22-0178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/11/2022] [Indexed: 11/08/2022]
Abstract
In brief Optical coherence microscopy is a label-free and non-invasive imaging technique capable of 3D subcellular structure visualization. Here we show that this method allows for quality assessment of immature mouse oocytes based on their chromatin conformation and can be a valuable addition to the toolkit used in assisted reproduction procedures. Abstract The success of assisted reproductive technologies, and particularly in vitro maturation, is tightly linked to the quality of oocytes. Therefore, there is a need for robust, reliable, and easy-to-assess biomarkers of oocyte developmental competence. Microscopy techniques visualizing oocyte intracellular structure could provide such biomarkers. However, fluorescence imaging methods, applied frequently in biology and allowing for detailed structural and dynamic studies of single cells, require fluorescent tags to visualize cellular architecture and may cause short- and long-term photo-damage. On the other hand, traditional light microscopy, although relatively non-invasive, does not provide detailed structural information. Optical coherence microscopy (OCM) is a promising alternative, as it does not require sample pre-processing or labelling and can provide 3D images of intracellular structures. Here we applied OCM to assess the chromatin conformation of immature mouse oocytes, a feature that corresponds with their transcriptional status and developmental competence and cannot be examined by traditional light microscopy. We showed that OCM distinguished oocytes with so-called non-surrounded nucleoli (NSN) and surrounded nucleoli (SN) chromatin conformation with very high sensitivity and specificity and that OCM scanning did not decrease the quality of oocytes. Finally, we cross-referenced OCM data with the oocyte ability to undergo normal nuclear and cytoplasmic maturation and proven that indeed oocytes scored with OCM as NSN mature less effectively than oocytes scored as SN. Our results suggest that OCM may be a valuable addition to the imaging toolkit used in assisted reproduction procedures.
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Affiliation(s)
- Monika Fluks
- Department of Embryology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Szymon Tamborski
- Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - Maciej Szkulmowski
- Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - Anna Ajduk
- Department of Embryology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
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5G Electromagnetic Radiation Attenuates Skin Melanogenesis In Vitro by Suppressing ROS Generation. Antioxidants (Basel) 2022; 11:antiox11081449. [PMID: 35892650 PMCID: PMC9331092 DOI: 10.3390/antiox11081449] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/18/2022] [Accepted: 07/22/2022] [Indexed: 02/04/2023] Open
Abstract
Recently, the impacts of 5G electromagnetic radiation (EMR) with 28 GHz on human health have been attracting public attention with the advent of 5G wireless communication. Here, we report that 5G (28 GHz) EMR can attenuate the skin pigmentation in murine melanoma cells (B16F10) and a 3D pigmented human epidermis model (Melanoderm™). B16 cells were exposed to 5G (28 GHz) with or without α-MSH for 4 h per day. Interestingly, 5G attenuated α-MSH-induced melanin synthesis. Fontana-Masson staining confirmed that the dendritic formation of α-MSH stimulated B16 cells was diminished by 5G exposure. To confirm the anti-melanogenic effect of 5G EMR, MelanoDerm™ was irradiated with 5G at a power intensity of 10 W/m2 for 4 h a day for 16 days and melanin distribution was detected with Fontana-Masson staining, which supported the anti-melanogenic effect of 5G EMR. Consistently, 5G EMR suppressed α-MSH induced upregulation of melanogenic enzymes; tyrosinase, TRP-1, and TRP-2. Of note, 5G EMR attenuated ROS production stimulated by α-MSH and H2O2, suggesting that 5G EMR may dissipate ROS generation, which is pivotal for the melanin synthesis. Collectively, we demonstrated that 5G EMR can attenuate skin pigmentation by attenuating ROS generation.
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Diaz-Maue L, Steinebach J, Richter C. Patterned Illumination Techniques in Optogenetics: An Insight Into Decelerating Murine Hearts. Front Physiol 2022; 12:750535. [PMID: 35087413 PMCID: PMC8787046 DOI: 10.3389/fphys.2021.750535] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 12/02/2021] [Indexed: 11/21/2022] Open
Abstract
Much has been reported about optogenetic based cardiac arrhythmia treatment and the corresponding characterization of photostimulation parameters, but still, our capacity to interact with the underlying spatiotemporal excitation patterns relies mainly on electrical and/or pharmacological approaches. However, these well-established treatments have always been an object of somehow heated discussions. Though being acutely life-saving, they often come with potential side-effects leading to a decreased functionality of the complex cardiac system. Recent optogenetic studies showed the feasibility of the usage of photostimulation as a defibrillation method with comparatively high success rates. Although, these studies mainly concentrated on the description as well as on the comparison of single photodefibrillation approaches, such as locally focused light application and global illumination, less effort was spent on the description of excitation patterns during actual photostimulation. In this study, the authors implemented a multi-site photodefibrillation technique in combination with Multi-Lead electrocardiograms (ECGs). The technical connection of real-time heart rhythm measurements and the arrhythmia counteracting light control provides a further step toward automated arrhythmia classification, which can lead to adaptive photodefibrillation methods. In order to show the power effectiveness of the new approach, transgenic murine hearts expressing channelrhodopsin-2 ex vivo were investigated using circumferential micro-LED and ECG arrays. Thus, combining the best of two methods by giving the possibility to illuminate either locally or globally with differing pulse parameters. The optical technique presented here addresses a number of challenges of technical cardiac optogenetics and is discussed in the context of arrhythmic development during photostimulation.
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Affiliation(s)
- Laura Diaz-Maue
- Department of Research Electronics, Max-Planck-Institute for Dynamics and Self-Organization, Göttingen, Germany.,Biomedical Physics Research Group, Max-Planck-Institute for Dynamics and Self-Organization, Göttingen, Germany.,German Center for Cardiovascular Research (DZHK e., V.), Göttingen, Germany
| | - Janna Steinebach
- Biomedical Physics Research Group, Max-Planck-Institute for Dynamics and Self-Organization, Göttingen, Germany
| | - Claudia Richter
- German Center for Cardiovascular Research (DZHK e., V.), Göttingen, Germany.,Laboratory Animal Science Unit, German Primate Center, Leibniz-Institute for Primate Research, Göttingen, Germany
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10
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The role of UV and blue light in photo-eradication of microorganisms. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2021. [DOI: 10.1016/j.jpap.2021.100064] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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11
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Camphausen R, Cuevas Á, Duempelmann L, Terborg RA, Wajs E, Tisa S, Ruggeri A, Cusini I, Steinlechner F, Pruneri V. A quantum-enhanced wide-field phase imager. SCIENCE ADVANCES 2021; 7:eabj2155. [PMID: 34788099 PMCID: PMC8598016 DOI: 10.1126/sciadv.abj2155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Quantum techniques can be used to enhance the signal-to-noise ratio in optical imaging. Leveraging the latest advances in single-photon avalanche diode array cameras and multiphoton detection techniques, here, we introduce a supersensitive phase imager, which uses space-polarization hyperentanglement to operate over a large field of view without the need of scanning operation. We show quantum-enhanced imaging of birefringent and nonbirefringent phase samples over large areas, with sensitivity improvements over equivalent classical measurements carried out with equal number of photons. The potential applicability is demonstrated by imaging a biomedical protein microarray sample. Our technology is inherently scalable to high-resolution images and represents an essential step toward practical quantum-enhanced imaging.
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Affiliation(s)
- Robin Camphausen
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels, Barcelona, Spain
- Corresponding author. (R.C.); (Á.C.); (V.P.)
| | - Álvaro Cuevas
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels, Barcelona, Spain
- Corresponding author. (R.C.); (Á.C.); (V.P.)
| | - Luc Duempelmann
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels, Barcelona, Spain
| | - Roland A. Terborg
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels, Barcelona, Spain
| | - Ewelina Wajs
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels, Barcelona, Spain
| | - Simone Tisa
- Micro Photon Device SRL, Via Waltraud Gebert Deeg 3f, 39100 Bolzano, Italy
| | - Alessandro Ruggeri
- Micro Photon Device SRL, Via Waltraud Gebert Deeg 3f, 39100 Bolzano, Italy
| | - Iris Cusini
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Via Giuseppe Ponzio, 34, 20133 Milano, Italy
| | - Fabian Steinlechner
- Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Albert-Einstein-Str. 7, 07745 Jena, Germany
- Abbe Center of Photonics, Friedrich Schiller University Jena, Albert-Einstein-Str. 6, 07745 Jena, Germany
| | - Valerio Pruneri
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Av. Carl Friedrich Gauss, 3, 08860 Castelldefels, Barcelona, Spain
- ICREA-Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, 08010 Barcelona, Spain
- Corresponding author. (R.C.); (Á.C.); (V.P.)
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12
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Ding J, Mellergaard M, Zhu Z, Kwan P, Edge D, Ma Z, Hebert L, Alrobaiea S, Iwasaki T, Nielsen MCE, Tredget EE. Fluorescent light energy modulates healing in skin grafted mouse model. Open Med (Wars) 2021; 16:1240-1255. [PMID: 34522783 PMCID: PMC8402934 DOI: 10.1515/med-2021-0329] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 06/11/2021] [Accepted: 07/07/2021] [Indexed: 12/25/2022] Open
Abstract
Skin grafting is often the only treatment for skin trauma when large areas of tissue are affected. This surgical intervention damages the deeper dermal layers of the skin with implications for wound healing and a risk of scar development. Photobiomodulation (PBM) therapy modulates biological processes in different tissues, with a positive effect on many cell types and pathways essential for wound healing. This study investigated the effect of fluorescent light energy (FLE) therapy, a novel type of PBM, on healing after skin grafting in a dermal fibrotic mouse model. Split-thickness human skin grafts were transplanted onto full-thickness excisional wounds on nude mice. Treated wounds were monitored, and excised xenografts were examined to assess healing and pathophysiological processes essential for developing chronic wounds or scarring. Results demonstrated that FLE treatment initially accelerated re-epithelialization and rete ridge formation, while later reduced neovascularization, collagen deposition, myofibroblast and mast cell accumulation, and connective tissue growth factor expression. While there was no visible difference in gross morphology, we found that FLE treatment promoted a balanced collagen remodeling. Collectively, these findings suggest that FLE has a conceivable effect at balancing healing after skin grafting, which reduces the risk of infections, chronic wound development, and fibrotic scarring.
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Affiliation(s)
- Jie Ding
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Maiken Mellergaard
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
- Department of Research and Development, Klox Technologies Europe Ltd, Dublin, Ireland
| | - Zhensen Zhu
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Peter Kwan
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Deirdre Edge
- Department of Research and Development, Klox Technologies Europe Ltd, Dublin, Ireland
| | - Zengshuan Ma
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Lise Hebert
- Department of Research and Development, Klox Technologies Inc., Laval, Canada
| | - Saad Alrobaiea
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Takashi Iwasaki
- Wound Healing Research Group, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, 161 HMRC, Edmonton, Canada
| | - Michael Canova Engelbrecht Nielsen
- Department of Research and Development, Klox R&D Center, Guangdong Klox Biomedical Group Co., Ltd, Room 603, 6/F, Building 8, No. 6, Nanjiang Second Road, Zhujiang Street, Nansha District, Guangzhou, China
| | - Edward E. Tredget
- Divisions of Plastic and Reconstructive Surgery and Critical Care, 2D2.28 Walter C MacKenzie Health Sciences Centre & Wound Healing Research Group, 161 HMRC, Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
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Photobiomodulation of mineralisation in mesenchymal stem cells. Photochem Photobiol Sci 2021; 20:699-714. [PMID: 33945145 DOI: 10.1007/s43630-021-00047-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 04/22/2021] [Indexed: 02/05/2023]
Abstract
Mesenchymal stem cells (MSCs) and photobiomodulation (PBM) both offer significant therapeutic potential in regenerative medicine. MSCs have the ability to self-renew and differentiate; giving rise to multiple cellular and tissue lineages that are utilised in repair and regeneration of damaged tissues. PBM utilises light energy delivered at a range of wavelengths to promote wound healing. The positive effects of light on MSC proliferation are well documented; and recently, several studies have determined the outcomes of PBM on mineralised tissue differentiation in MSC populations. As PBM effects are biphasic, it is important to understand the underlying cellular regulatory mechanisms, as well as, provide accurate details of the irradiation conditions, to optimise and standardise outcomes. This review article focuses on the use of red, near-infra-red (R/NIR) and blue wavelengths to promote the mineralisation potential of MSCs; and also reports on the possible molecular mechanisms which underpin transduction of these effects. A variety of potential photon absorbers have been identified which are reported to mediate the signalling mechanisms, including respiratory chain enzymes, flavins, and cryptochromes. Studies report that R/NIR and blue light stimulate MSC differentiation by enhancing respiratory chain activity and increasing reactive oxygen species levels; however, currently, there are considerable variations between irradiation parameters reported. We conclude that due to its non-invasive properties, PBM may, following optimisation, provide an efficient therapeutic approach to clinically support MSC-mediated hard tissue repair. However, to optimise application, further studies are required to identify appropriate light delivery parameters, as well as elucidate the photo-signalling mechanisms involved.
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Gedar Totuk ÖM, Kabadayı K, Özkapı C, Aykan Ü. Efficacy of Intense Pulsed Light Treatment for Moderate to Severe Acute Blepharitis or Blepharoconjunctivitis: A Retrospective Case Series. Turk J Ophthalmol 2021; 51:89-94. [PMID: 33951896 PMCID: PMC8109034 DOI: 10.4274/tjo.galenos.2020.28924] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Objectives: We aimed to evaluate the efficacy of periocular intense pulsed light (IPL) therapy in the treatment of moderate to severe acute blepharitis or blepharoconjunctivitis. Materials and Methods: This was a retrospective study performed in one institution. Eleven patients who received bilateral periocular IPL therapy using an IPL device (E>Eye, ESwin, Paris, France) were retrospectively evaluated. The following findings obtained at baseline and 10 weeks after the treatment were recorded: slit-lamp examinations; symptom scores of the Compression of the Eyelid (COTE) grading system and Ocular Surface Disease Index (OSDI); ocular surface staining with Oxford grading scale (OXFORD) scores; lipid layer thickness (LLT); and non-invasive tear meniscus test (TMH), non-invasive break up time measurement (NIBUT), and meibography performed by using I.C.P. Ocular Surface Analyzer (SBM System, Turin, Italy). Results: Significant improvements in OSDI symptom scores (p<0.0001), LLT (p<0.0001), and meibography (p<0.0001) were obtained at 10 weeks after bilateral periocular IPL therapy. COTE and ocular surface staining scores decreased by 59.72% and 57.14% respectively, while NIBUT and TMH increased by 47.34% and 22.16%, respectively. In parallel to the improvement in OSDI, LLT, and meibography, findings of acute blepharitis or blepharoconjunctivitis improved in slit-lamp examination. There were no adverse effects. Conclusion: Serial IPL therapy improves the clinical signs and symptoms of moderate to severe acute blepharitis or blepharoconjunctivitis, meibomian gland morphology, and secretion quality.
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Affiliation(s)
| | - Kerem Kabadayı
- Bahçeşehir University Faculty of Medicine, İstanbul, Turkey
| | - Cihan Özkapı
- Üsküdar University, Health Services Vocational School, Department of Opticianry, İstanbul, Turkey
| | - Ümit Aykan
- Yakın Doğu University Faculty of Medicine, Department of Ophthalmology, Nicosia, Cyprus
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Photobiomodulation combined with adipose-derived stem cells encapsulated in methacrylated gelatin hydrogels enhances in vivo bone regeneration. Lasers Med Sci 2021; 37:595-606. [PMID: 33839962 DOI: 10.1007/s10103-021-03308-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 03/28/2021] [Indexed: 12/11/2022]
Abstract
Reconstruction of bone defects is still a significant challenge. The aim of this study was to evaluate the effect of application of photobiomodulation (PBM) to enhance in vivo bone regeneration and osteogenic differentiation potential of adipose-derived stem cells (ADSCs) encapsulated in methacrylated gelatin (GEL-MA) hydrogels. Thirty-six Sprague-Dawley rats were randomly separated into 3 experimental groups (n = 12 each). The groups were control/blank defect (I), GEL-MA hydrogel (II), and ADSC-loaded GEL-MA (GEL-MA+ADSC) hydrogel (III). Biparietal critical sized bone defects (6 mm in size) are created in each animal. Half of the animals from each group (n = 6 each) were randomly selected for PBM application using polychromatic light in the near infrared region, 600-1200 nm. PBM was administered from 10 cm distance cranially in 48 h interval. The calvaria were harvested at the 20th week, and macroscopic, microtomographic, and histologic evaluation were performed for further analysis. Microtomographic evaluation demonstrated the highest result for mineralized matrix formation (MMF) in group III. PBM receiving samples of group III showed mean MMF of 79.93±3.41%, whereas the non-PBM receiving samples revealed mean MMF of 60.62±6.34 % (p=0.002). In terms of histologic evaluation of bone defect repair, the higher scores were obtained in the groups II and III when compared to the control group (2.0 for both PBM receiving and non-receiving specimens; p<0.001). ADSC-loaded microwave-induced GEL-MA hydrogels and periodic application of photobiomodulation with polychromatic light appear to have beneficial effect on bone regeneration and can stimulate ADSCs for osteogenic differentiation.
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16
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Structural membrane changes induced by pulsed blue light on methicillin-resistant Staphylococcus aureus (MRSA). JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 216:112150. [PMID: 33578335 DOI: 10.1016/j.jphotobiol.2021.112150] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 11/16/2020] [Accepted: 01/29/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND In a recent study we showed that blue light inactivates methicillin-resistant Staphylococcus aureus (MRSA) by perturbing, depolarizing, and disrupting its cell membrane. PURPOSE The current study presents visual evidence that the observed biochemical changes also result in cell metabolic changes and structural alteration of the cell membrane. METHODS Cultures of MRSA were treated with 450 nm pulsed blue light (PBL) at 3 mW/cm2 irradiance, using a sub lethal dose of 2.7 J/cm2 radiant exposure three times at 30-min intervals. Following 24 h incubation at 37 °C, irradiated colonies and control non-irradiated colonies were processed for light and transmission electron microscopy. RESULTS The images obtained revealed three major effects of PBL; (1) disruption of MRSA cell membrane, (2) alteration of membrane structure, and (3) disruption of cell replication. CONCLUSION These signs of bacterial inactivation at a dose deliberately selected to be sub-lethal supports our previous finding that rapid depolarization of bacterial cell membrane and disruption of cellular function comprise another mechanism underlying photo-inactivation of bacteria. Further, it affirms the potency of PBL.
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Bumah VV, Cortez PM, Morrow BN, Rojas P, Bowman CR, Masson-Meyers DS, Enwemeka CS. Blue light absorbing pigment in Streptococcus agalactiae does not potentiate the antimicrobial effect of pulsed 450 nm light. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 216:112149. [PMID: 33578336 DOI: 10.1016/j.jphotobiol.2021.112149] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 12/22/2020] [Accepted: 01/29/2021] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Recently, it was shown that Group B Streptococcus (GBS) COH1 strain, which has granadaene-an endogenous chromophore known to absorb blue light-is not susceptible to 450 nm pulsed blue light (PBL) inactivation unless the bacterium is co-cultured with exogenous porphyrin. PURPOSE To confirm or refute the finding, we studied the effect of blue light on NCTC, another strain of GBS with more granadaene than COH1, to determine if the abundance of granadaene-and by implication more absorption of blue light-fosters GBS susceptibility to PBL. METHODS We irradiated cultures of the bacterium with or without protoporphyrin, coproporphyrin, flavin mononucleotide (FMN), flavin adenine dinucleotide (FAD), nicotinamide adenine dinucleotide (NAD) or NADH. After 24-h incubation, bacterial colonies were enumerated, log10 CFU/mL computed, and descriptive and inferential data analyzed and compared. RESULTS (1) The rich amount of granadaene in NCTC did not enhance its susceptibility to antimicrobial pulsed blue light (PBL). (2) Adding exogenous porphyrin fostered NCTC susceptibility to irradiation, resulting in 100% bacterial suppression. (3) Exogenous FMN or FAD, which strongly absorb 450 nm light, did not promote the antimicrobial effect of PBL, neither did exogenous NAD or NADH, two weak blue light-absorbing photosensitizers. CONCLUSION These results strengthen our previous assertion that an endogenous chromophore with the capacity to absorb and transform light energy into a biochemical process that engenders bacterial cell death, is essential for 450 nm PBL to suppress GBS.
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Affiliation(s)
- Violet Vakunseh Bumah
- Department of Chemistry and Biochemistry, College of Sciences, San Diego State University, San Diego, CA, USA; College of Health and Human Services, San Diego State University, San Diego, CA, USA.
| | | | | | - Paulina Rojas
- Department of Biology, San Diego State University, CA 92182, USA
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Plavskii VY, Barulin NV, Mikulich AV, Tretyakova AI, Ananich TS, Plavskaya LG, Leusenka IA, Sobchuk AN, Sysov VA, Dudinova ON, Vodchits AI, Khodasevich IA, Orlovich VA. Effect of continuous wave, quasi-continuous wave and pulsed laser radiation on functional characteristics of fish spermatozoa. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 216:112112. [PMID: 33524930 DOI: 10.1016/j.jphotobiol.2020.112112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 11/11/2020] [Accepted: 12/19/2020] [Indexed: 11/17/2022]
Abstract
For the first time, using sturgeon sperm as a model system, sensitive to optical radiation, the comparative studies of biological effect of continuous wave, quasi-continuous wave, nano- and picosecond laser radiation under conditions with equal average irradiance (3 mW/cm2) and wavelength (532 nm) have been carried out. Analyzing the parameters of spermatozoa motion it has been shown that, depending on the energy dose and mode of laser operation, the radiation may have both stimulatory and inhibitory effect on the velocity of motion and spermatozoa motility duration as well as on sustaining of functional characteristics of cold-stored sperm. The possibility of increasing the fertilization rate due to use of the sperm preliminary treated with laser radiation is demonstrated. For the first time, the possibility of enhancement of biological effect going from continuous wave to quasi-continuous wave laser radiation at equal irradiance and wavelength has experimentally been proven. It is shown that the difference in biological effect of continuous wave, quasi-continuous wave, nano- and picosecond laser radiation is due to amplitude (peak) values of intensity. Using fluorescence analysis and luminol-dependent chemiluminescence assay, evidence for the participation of endogenous flavins and metal-free porphyrins in sensitized ROS formation (singlet oxygen, hydrogen peroxide, and hydroxyl radicals) in sturgeon sperm was obtained. Mechanisms of photochemical and photothermal reactions explaining the difference in efficacy of action of laser radiation in above modes are discussed.
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Affiliation(s)
- V Yu Plavskii
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus.
| | - N V Barulin
- Belarusian State Agricultural Academy, 213407, Mogilev region, Gorki, Michurin st. 5, Belarus
| | - A V Mikulich
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - A I Tretyakova
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - T S Ananich
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - L G Plavskaya
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - I A Leusenka
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - A N Sobchuk
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - V A Sysov
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - O N Dudinova
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - A I Vodchits
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - I A Khodasevich
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
| | - V A Orlovich
- The State Scientific Institution "В.I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus", 220072 Minsk, 68-2 Nezavisimosti ave., Belarus
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Catalán J, Papas M, Gacem S, Mateo-Otero Y, Rodríguez-Gil JE, Miró J, Yeste M. Red-Light Irradiation of Horse Spermatozoa Increases Mitochondrial Activity and Motility through Changes in the Motile Sperm Subpopulation Structure. BIOLOGY 2020; 9:biology9090254. [PMID: 32872467 PMCID: PMC7565061 DOI: 10.3390/biology9090254] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 08/27/2020] [Indexed: 01/15/2023]
Abstract
Previous studies in other mammalian species have shown that stimulation of semen with red-light increases sperm motility, mitochondrial activity, and fertilizing capacity. This study sought to determine whether red-light stimulation using a light emitting diode (LED) at 620–630 nm affects sperm motility and structure of motile subpopulations, sperm viability, mitochondrial activity, intracellular ATP levels, rate of O2 consumption and DNA integrity of horse spermatozoa. For this purpose, nine ejaculates were collected from nine different adult stallions. Upon collection, semen was diluted in Kenney extender, analyzed, its concentration was adjusted, and finally it was stimulated with red-light. In all cases, semen was packaged in 0.5-mL transparent straws, which were randomly divided into controls and 19 light-stimulation treatments; 6 consisted of a single exposure to red-light, and the other 13 involved irradiation with intervals of irradiation and darkness (light-dark-light). After irradiation, sperm motility was assessed using a Computerized Semen Analysis System (CASA). Flow cytometry was used to evaluate sperm viability, mitochondrial membrane potential and DNA fragmentation. Intracellular levels of ATP and O2 consumption rate were also determined. Specific red-light patterns were found to modify kinetics parameters (patterns: 4, 2-2-2, 3-3-3, 4-4-4, 5-1-5, and 5-5-5 min), the structure of motile sperm subpopulations (patterns: 2, 2-2-2, 3-3-3, and 4-1-4 min), mitochondrial membrane potential (patterns: 4, 3-3-3, 4-4-4, 5-1-5, 5-5-5, 15-5-15, and 15-15-15 min), intracellular ATP levels and the rate of O2 consumption (pattern: 4 min), without affecting sperm viability or DNA integrity. Since the increase in some kinematic parameters was concomitant with that of mitochondrial activity, intracellular ATP levels and O2 consumption rate, we suggest that the positive effect of light-irradiation on sperm motility is related to its impact upon mitochondrial activity. In conclusion, this study shows that red LED light stimulates motility and mitochondrial activity of horse sperm. Additional research is needed to address the impact of red-light irradiation on fertilizing ability and the mechanisms through which light exerts its effects.
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Affiliation(s)
- Jaime Catalán
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Sciences, Autonomous University of Barcelona, ES-08193 Bellaterra (Cerdanyola del Vallès), Spain; (J.C.); (M.P.); (S.G.); (J.E.R.-G.)
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain;
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain
| | - Marion Papas
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Sciences, Autonomous University of Barcelona, ES-08193 Bellaterra (Cerdanyola del Vallès), Spain; (J.C.); (M.P.); (S.G.); (J.E.R.-G.)
| | - Sabrina Gacem
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Sciences, Autonomous University of Barcelona, ES-08193 Bellaterra (Cerdanyola del Vallès), Spain; (J.C.); (M.P.); (S.G.); (J.E.R.-G.)
| | - Yentel Mateo-Otero
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain;
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain
| | - Joan E. Rodríguez-Gil
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Sciences, Autonomous University of Barcelona, ES-08193 Bellaterra (Cerdanyola del Vallès), Spain; (J.C.); (M.P.); (S.G.); (J.E.R.-G.)
| | - Jordi Miró
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Sciences, Autonomous University of Barcelona, ES-08193 Bellaterra (Cerdanyola del Vallès), Spain; (J.C.); (M.P.); (S.G.); (J.E.R.-G.)
- Correspondence: (J.M.); (M.Y.); Tel.: +34-93-5814293 (J.M.); +34-972-419514 (M.Y.)
| | - Marc Yeste
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, ES-17003 Girona, Spain;
- Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, ES-17003 Girona, Spain
- Correspondence: (J.M.); (M.Y.); Tel.: +34-93-5814293 (J.M.); +34-972-419514 (M.Y.)
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Plavskii V, Mikulich A, Barulin N, Ananich T, Plavskaya L, Tretyakova A, Leusenka I. Comparative Effect of Low‐intensity Laser Radiation in Green and Red Spectral Regions on Functional Characteristics of Sturgeon Sperm. Photochem Photobiol 2020; 96:1294-1313. [DOI: 10.1111/php.13315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 07/16/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Vitaly Plavskii
- The State Scientific Institution «B.I.Stepanov Institute of Physics of the National Academy of Sciences of Belarus» Minsk Belarus
| | - Aliaksandr Mikulich
- The State Scientific Institution «B.I.Stepanov Institute of Physics of the National Academy of Sciences of Belarus» Minsk Belarus
| | | | - Tatsiana Ananich
- The State Scientific Institution «B.I.Stepanov Institute of Physics of the National Academy of Sciences of Belarus» Minsk Belarus
| | - Ludmila Plavskaya
- The State Scientific Institution «B.I.Stepanov Institute of Physics of the National Academy of Sciences of Belarus» Minsk Belarus
| | - Antonina Tretyakova
- The State Scientific Institution «B.I.Stepanov Institute of Physics of the National Academy of Sciences of Belarus» Minsk Belarus
| | - Ihar Leusenka
- The State Scientific Institution «B.I.Stepanov Institute of Physics of the National Academy of Sciences of Belarus» Minsk Belarus
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Bumah VV, Morrow BN, Cortez PM, Bowman CR, Rojas P, Masson-Meyers DS, Suprapto J, Tong WG, Enwemeka CS. The importance of porphyrins in blue light suppression of Streptococcus agalactiae. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 212:111996. [PMID: 32863128 DOI: 10.1016/j.jphotobiol.2020.111996] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/06/2020] [Accepted: 08/12/2020] [Indexed: 02/08/2023]
Abstract
It is well documented that blue light absorption by bacterial chromophores triggers downstream production of reactive oxygen species (ROS), which in turn results in bacterial cell death. To elucidate the importance of chromophores in the bactericidal effect of blue light, and to determine whether blue light absorption per se or the presence of porphyrins known to engender ROS is crucial in blue light treatment, we studied the effect of 450 nm pulsed light on Streptococcus agalactiae, also known as Group B Streptococcus (GBS) strain COH1. GBS does not synthesize porphyrins but has a blue light-absorbing chromophore, granadaene. We irradiated planktonic cultures of GBS with or without exogenous chromophore supplementation using either protoporphyrin IX (PPIX), coproporphyrin III (CPIII), Nicotinamide adenine dinucleotide (NAD), reduced nicotinamide adenine dinucleotide (NADH), Flavin adenine dinucleotide (FAD), or Flavin mononucleotide (FMN). Quantification of surviving bacterial colonies, presented as percent survival and CFU/mL (log10), showed that (1) 450 nm blue light does not suppress the growth of GBS, even though its endogenous chromophore, granadaene, absorbs light in the 450 nm spectrum. (2) The addition of either of the two exogenous porphyrins, PPIX or CPIII, significantly suppressed GBS, indicating the importance of porphyrins in the antimicrobial action of blue light. (3) Adding exogenous FMN or FAD, two known absorbers of 450 nm light, minimally potentiated the bactericidal effect of blue light, again confirming that mere absorption of blue light by chromophores does not necessarily result in bacterial suppression. (4) Irradiation of GBS with or without NAD+ or NADH supplementation-two weak absorbers of 450 nm light-minimally suppressed GBS, indicating that a blue light-absorbing chromophore is essential for the bactericidal action of blue light. (5) Collectively, these findings show that in addition to the presence of a blue light-absorbing chromophore in bacteria, a chromophore with the right metabolic machinery and biochemical structure, capable of producing ROS, is necessary for 450 nm blue light to suppress GBS.
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Affiliation(s)
- Violet Vakunseh Bumah
- Department of Chemistry and Biochemistry, College of Sciences, 5500 Campanile Dr, San Diego, CA 92182, USA; College of Health and Human Services, San Diego State University, 5500 Campanile Dr, San Diego, CA 92182, USA.
| | | | | | | | - Paulina Rojas
- Department of Biology, 5500 Campanile Dr, San Diego, CA 92182. USA
| | - Daniela Santos Masson-Meyers
- College of Health and Human Services, San Diego State University, 5500 Campanile Dr, San Diego, CA 92182, USA; Marquette University School of Dentistry, 1801 W Wisconsin Ave, Milwaukee, WI 53233, USA
| | - James Suprapto
- Department of Chemistry and Biochemistry, College of Sciences, 5500 Campanile Dr, San Diego, CA 92182, USA.
| | - William G Tong
- Department of Chemistry and Biochemistry, College of Sciences, 5500 Campanile Dr, San Diego, CA 92182, USA.
| | - Chukuka Samuel Enwemeka
- College of Health and Human Services, San Diego State University, 5500 Campanile Dr, San Diego, CA 92182, USA.
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Enwemeka CS, Bumah VV, Masson-Meyers DS. Light as a potential treatment for pandemic coronavirus infections: A perspective. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 207:111891. [PMID: 32388486 PMCID: PMC7194064 DOI: 10.1016/j.jphotobiol.2020.111891] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 04/29/2020] [Indexed: 12/15/2022]
Abstract
The recent outbreak of COVID-19, which continues to ravage communities with high death tolls and untold psychosocial and catastrophic economic consequences, is a vivid reminder of nature's capacity to defy contemporary healthcare. The pandemic calls for rapid mobilization of every potential clinical tool, including phototherapy—one of the most effective treatments used to reduce the impact of the 1918 “Spanish influenza” pandemic. This paper cites several studies showing that phototherapy has immense potential to reduce the impact of coronavirus diseases, and offers suggested ways that the healthcare industry can integrate modern light technologies in the fight against COVID-19 and other infections. The evidence shows that violet/blue (400–470 nm) light is antimicrobial against numerous bacteria, and that it accounts for Niels Ryberg Finsen's Nobel-winning treatment of tuberculosis. Further evidence shows that blue light inactivates several viruses, including the common flu coronavirus, and that in experimental animals, red and near infrared light reduce respiratory disorders, similar to those complications associated with coronavirus infection. Moreover, in patients, red light has been shown to alleviate chronic obstructive lung disease and bronchial asthma. These findings call for urgent efforts to further explore the clinical value of light, and not wait for another pandemic to serve as a reminder. The ubiquity of inexpensive light emitting lasers and light emitting diodes (LEDs), makes it relatively easy to develop safe low-cost light-based devices with the potential to reduce infections, sanitize equipment, hospital facilities, emergency care vehicles, homes, and the general environment as pilot studies have shown.
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Affiliation(s)
- Chukuka Samuel Enwemeka
- College of Health and Human Services, San Diego State University, 5500 Campanile Dr, San Diego, CA 92182, USA.
| | - Violet Vakunseh Bumah
- College of Health and Human Services, San Diego State University, 5500 Campanile Dr, San Diego, CA 92182, USA; Department of Chemistry and Biochemistry, College of Sciences, 5500 Campanile Dr, San Diego, CA 92182, USA.
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Sommer AP, Schemmer P, Pavláth AE, Försterling HD, Mester ÁR, Trelles MA. Quantum biology in low level light therapy: death of a dogma. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:440. [PMID: 32395484 PMCID: PMC7210155 DOI: 10.21037/atm.2020.03.159] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background It is shown that despite exponential increase in the number of clinically exciting results in low level light therapy (LLLT), scientific progress in the field is retarded by a wrong fundamental model employed to explain the photon-cell interaction as well as by an inadequate terminology. This is reflected by a methodological stagnation in LLLT, persisting since 1985. The choice of the topics is, by necessity, somewhat arbitrary. Obviously, we are writing more about the fields we know more about. In some cases, there are obvious objective reasons for the choice. Progress in LLLT is currently realized by a trial and error process, as opposed to a systematic approach based on a valid photon-cell interaction model. Methods The strategy to overcome the current problem consists in a comprehensive analysis of the theoretical foundation of LLLT, and if necessary, by introducing new interaction models and checking their validity on the basis of the two pillars of scientific advance (I) agreement with experiment and (II) predictive capability. The list of references used in this work, does contain a representative part of what has been done in the photon-cell interaction theory in recent years, considered as ascertained by the scientific community. Results Despite the immense literature on the involvement of cytochrome c oxidase (COX) in LLLT, the assumption that COX is the main mitochondrial photoacceptor for R-NIR photons no longer can be counted as part of the theoretical framework proper, at least not after we have addressed the misleading points in the literature. Here, we report the discovery of a coupled system in mitochondria whose working principle corresponds to that of field-effect transistor (FET). The functional interplay of cytochrome c (emitter) and COX (drain) with a nanoscopic interfacial water layer (gate) between the two enzymes forms a biological FET in which the gate is controlled by R-NIR photons. By reducing the viscosity of the nanoscopic interfacial water layers within and around the mitochondrial rotary motor in oxidatively stressed cells R-NIR light promotes the synthesis of extra adenosine triphosphate (ATP). Conclusions Based on the results of our own work and a review of the published literature, we present the effect of R-NIR photons on nanoscopic interfacial water layers in mitochondria and cells as a novel understanding of the biomedical effects R-NIR light. The novel paradigm is in radical contrast to the theory that COX is the main absorber for R-NIR photons and responsible for the increase in ATP synthesis, a dogma propagated for more than 20 years.
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Affiliation(s)
| | - Peter Schemmer
- General, Visceral and Transplant Surgery, Medical University of Graz, Graz, Austria
| | - Attila E Pavláth
- Past President American Chemical Society, Western Regional Research Center, Albany, CA, USA
| | | | - Ádám R Mester
- National Laser Therapy Centre, Péterfy Sándor Teaching Hospital, Budapest, Hungary
| | - Mario A Trelles
- Plastic-Aesthetic Surgery, Vilafortuny Laser Centre, Jumeirah, Dubai, United Arab Emirates
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Transcranial near-infrared stimulation may increase cortical excitability recorded in humans. Brain Res Bull 2020; 155:155-158. [DOI: 10.1016/j.brainresbull.2019.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/06/2019] [Accepted: 12/10/2019] [Indexed: 12/21/2022]
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Zhuang J, Yin J, Xu C, Jiang M, Lv S. Diverse autophagy and apoptosis in myeloid leukemia cells induced by 20(s)-GRh2 and blue LED irradiation. RSC Adv 2019; 9:39124-39132. [PMID: 35540666 PMCID: PMC9075934 DOI: 10.1039/c9ra08049j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 11/12/2019] [Indexed: 11/21/2022] Open
Abstract
Autophagy is an important mechanism for cell death regulation. To improve the anticancer effect during the treatment of leukemia and promote the apoptosis of leukemic cells, it is important to define the relationship between autophagy and apoptosis. A key bioactive compound in traditional Chinese medicine, 20(s)-Ginsenoside (GRh2), demonstrated an advancement in leukemia treatment. Blue LED therapy (BL) is a physical treatment method that can induce leukemic cell death. In this study, we tested the effect of 20(s)-GRh2, BL, and their combination (BL-GRh2) on the activation of leukemic cell apoptosis and autophagy. Both treatments, whether used individually or simultaneously, induce apoptosis through the induction of reactive oxygen species (ROS), disrupted mitochondrial membrane potential (MMP) and regulated the expression of apoptosis-related genes and proteins. Furthermore, using western blotting to analyze the autophagy markers LC3B and P62, we detected the activation of autophagy. In cells treated with autophagy inhibitor 3-MA, both autophagy and apoptosis were inhibited, either by BL alone or by BL-GRh2. However, apoptosis in 20(s)-GRh2-treated cells was enhanced. In cells treated with apoptosis suppressor Z-VAD-FMK, autophagy was inhibited in the BL and BL-GRh2-treated cells, although it was enhanced in cells treated with 20(s)-GRh2 alone. Moreover, we observed a stronger induction of apoptosis by BL-GRh2 in myeloid leukemia cells. Our data indicate that autophagy induced by different factors can play diverse roles on the same cells. Our results also indicate that the combination of traditional Chinese medicine with physical therapy may be a new strategy for anti-cancer therapy.
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Affiliation(s)
- Jianjian Zhuang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University Changchun 130000 China
| | - Juxin Yin
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University Changchun 130000 China
- Research Centre for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University Hangzhou Zhejiang Province 310058 P. R. China
| | - Chaojian Xu
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University Changchun 130000 China
| | - Mengmeng Jiang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University Changchun 130000 China
| | - Shaowu Lv
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University Changchun 130000 China
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Ríos-Ramírez M, Espinoza JH, Ruiz-Suárez JC, Mercado-Uribe H. The effect of green light on the motility of mouse sperm at two different temperatures. Photochem Photobiol Sci 2019; 18:2893-2900. [PMID: 31681924 DOI: 10.1039/c9pp00258h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photo-modulation with visible light has been used to induce gains in the motility of the sperms of rabbits, boars, buffalo, bulls, fish, and humans. Although different hypotheses have been proposed to explain such an effect, the origin and mechanisms by which visible light affects sperm motility are still far from being completely understood. Several groups have observed changes in the intracellular Ca2+ concentration and significant differences in the production of ROS, which are attributed to specific photosensitizers. Also, it has been reported that blue light induces nitric oxide production in sperm cells, which plays a vital role in acrosome reaction and capacitation leading to an augmentation in the fertilisation probability. In the present work, we study the effects of green light (490-540 nm) on the sperm motility of mice. Firstly, we carried out experiments at 37 °C to confirm what previous researchers have observed before using red and blue light: that the overall sperm motility increases. Secondly, we studied the effects of green light at 10 °C and found that the motility drastically diminishes. In order to understand this opposing outcome, we carried out fluorescence measurements to evaluate reactive oxygen species production induced by green light at both temperatures. Our results suggest that the balance between the use and generation of ROS at 37 °C is favorable to the cells, while at 10 °C it is harmful.
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Affiliation(s)
- M Ríos-Ramírez
- CINVESTAV-Monterrey, PIIT, Autopista al Aeropuerto km. 9.5, CP 66600, Apodaca, NL, Mexico.
| | - J Horacio Espinoza
- CINVESTAV-Monterrey, PIIT, Autopista al Aeropuerto km. 9.5, CP 66600, Apodaca, NL, Mexico. and Departamento de Computación, Electrónica y Mecatrónica, UDLA, Sta. Catarina Mártir S/N, CP 72810, Cholula, Puebla, Mexico
| | - J C Ruiz-Suárez
- CINVESTAV-Monterrey, PIIT, Autopista al Aeropuerto km. 9.5, CP 66600, Apodaca, NL, Mexico.
| | - H Mercado-Uribe
- CINVESTAV-Monterrey, PIIT, Autopista al Aeropuerto km. 9.5, CP 66600, Apodaca, NL, Mexico.
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Richter C, Bruegmann T. No light without the dark: Perspectives and hindrances for translation of cardiac optogenetics. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2019; 154:39-50. [PMID: 31515056 DOI: 10.1016/j.pbiomolbio.2019.08.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/18/2019] [Accepted: 08/27/2019] [Indexed: 12/30/2022]
Abstract
Over the last decade, optogenetic stimulation of the heart and its translational potential for rhythm control attracted more and more interest. Optogenetics allows to stimulate cardiomyocytes expressing the light-gated cation channel Channelrhodopsin 2 (ChR2) with light and thus high spatio-temporal precision. Therefore this new approach can overcome the technical limitations of electrical stimulation. In regard of translational approaches, the prospect of pain-free stimulation, if ChR2 expression is restricted to cardiomyocytes, is especially intriguing and could be highly beneficial for cardioversion and defibrillation. However, there is no light without shadow and cardiac optogenetics has to surmount critical hurdles, namely "how" to inscribe light-sensitivity by expressing ChR2 in a native heart and how to avoid side effects such as possible immune responses against the gene transfer. Furthermore, implantable light devices have to be developed which ensure sufficient illumination in a highly contractile environment. Therefore this article reviews recent advantages in the field of cardiac optogenetics with a special focus on the hindrances for the potential translation of this new approach into clinics and provides an outlook how these have to be carefully investigated and could be solved step by step.
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Affiliation(s)
- Claudia Richter
- RG Biomedical Physics, Max Planck Institute for Dynamics & Self-Organization, Am Fassberg 17, 37077, Goettingen, Germany; Department of Cardiology and Pneumology, University Medical Center, Robert-Koch-Str. 42a, 37075, Goettingen, Germany; DZHK e.V. (German Center for Cardiovascular Research), Partner Site Goettingen, 37075, Goettingen, Germany.
| | - Tobias Bruegmann
- DZHK e.V. (German Center for Cardiovascular Research), Partner Site Goettingen, 37075, Goettingen, Germany; Institute for Cardiovascular Physiology, University Medical Center Goettingen, Humboldtallee 23, 37073, Goettingen, Germany.
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Sazhina E, Okotrub K, Amstislavsky S, Surovtsev N. Effect of low temperatures on cytochrome photoresponse in mouse embryos. Arch Biochem Biophys 2019; 669:32-38. [DOI: 10.1016/j.abb.2019.05.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/16/2019] [Accepted: 05/22/2019] [Indexed: 10/26/2022]
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Petrishchev NN, Papayan GV, Chistyakova LV, Struy AV, Faizullina DR. Effect of Photobiomodulation by Red and Infrared Laser Radiation on Motility of Paramecium caudatum. J EVOL BIOCHEM PHYS+ 2019. [DOI: 10.1134/s0022093018060054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Quiñonez Uribe RA, Luther S, Diaz-Maue L, Richter C. Energy-Reduced Arrhythmia Termination Using Global Photostimulation in Optogenetic Murine Hearts. Front Physiol 2018; 9:1651. [PMID: 30542292 PMCID: PMC6277892 DOI: 10.3389/fphys.2018.01651] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 11/02/2018] [Indexed: 02/01/2023] Open
Abstract
Complex spatiotemporal non-linearity as observed during cardiac arrhythmia strongly correlates with vortex-like excitation wavelengths and tissue characteristics. Therefore, the control of arrhythmic patterns requires fundamental understanding of dependencies between onset and perpetuation of arrhythmia and substrate instabilities. Available treatments, such as drug application or high-energy electrical shocks, are discussed for potential side effects resulting in prognosis worsening due to the lack of specificity and spatiotemporal precision. In contrast, cardiac optogenetics relies on light sensitive ion channels stimulated to trigger excitation of cardiomyocytes solely making use of the inner cell mechanisms. This enables low-energy, non-damaging optical control of cardiac excitation with high resolution. Recently, the capability of optogenetic cardioversion was shown in Channelrhodopsin-2 (ChR2) transgenic mice. But these studies used mainly structured and local illumination for cardiac stimulation. In addition, since optogenetic and electrical stimulus work on different principles to control the electrical activity of cardiac tissue, a better understanding of the phenomena behind optogenetic cardioversion is still needed. The present study aims to investigate global illumination with regard to parameter characterization and its potential for cardioversion. Our results show that by tuning the light intensity without exceeding 1.10 mW mm-2, a single pulse in the range of 10–1,000 ms is sufficient to reliably reset the heart into sinus rhythm. The combination of our panoramic low-intensity photostimulation with optical mapping techniques visualized wave collision resulting in annihilation as well as propagation perturbations as mechanisms leading to optogenetic cardioversion, which seem to base on other processes than electrical defibrillation. This study contributes to the understanding of the roles played by epicardial illumination, pulse duration and light intensity in optogenetic cardioversion, which are the main variables influencing cardiac optogenetic control, highlighting the advantages and insights of global stimulation. Therefore, the presented results can be modules in the design of novel illumination technologies with specific energy requirements on the way toward tissue-protective defibrillation techniques.
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Affiliation(s)
- Raúl A Quiñonez Uribe
- RG Biomedical Physics, Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany
| | - Stefan Luther
- RG Biomedical Physics, Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany.,Institute for Nonlinear Dynamics, Georg-August University, Göttingen, Germany.,Department of Pharmacology and Toxicology, University Medical Center, Göttingen, Germany.,German Center for Cardiovascular Research (DZHK e.V.), Partner Site Göttingen, Göttingen, Germany
| | - Laura Diaz-Maue
- RG Biomedical Physics, Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany
| | - Claudia Richter
- RG Biomedical Physics, Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany.,German Center for Cardiovascular Research (DZHK e.V.), Partner Site Göttingen, Göttingen, Germany.,Department of Cardiology and Pneumology, University Medical Center, Göttingen, Germany
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31
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Anbaraki A, Ghahramani M, Muranov KO, Kurganov BI, Yousefi R. Structural and functional alteration of human αA-crystallin after exposure to full spectrum solar radiation and preventive role of lens antioxidants. Int J Biol Macromol 2018; 118:1120-1130. [PMID: 29964111 DOI: 10.1016/j.ijbiomac.2018.06.136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 06/06/2018] [Accepted: 06/26/2018] [Indexed: 12/31/2022]
Abstract
The chronically exposure of eye lenses to ultra violet and visible light of the solar radiation is an important risk factor for development of the senile cataract diseases. Various photosensitizer molecules including riboflavin (RF) play a significant role in photo-oxidative damages of lens proteins underlying development of opacity in the lenticular tissues. In the current study, RF-mediated photo-oxidation of human αA-crystallin (αA-Cry) was assessed using SDS-PAGE analysis, dynamic light scattering and other spectroscopic assessments. The RF-photosensitized reactions led to non-disulfide covalent cross-linking, oligomerization and significant structural changes in αA-Cry. The photo-damaging of αA-Cry under solar radiation was also accompanied by the reduction in both Trp and Tyr fluorescence intensities which followed by the formation of new photosensitizer chromophores. The solvent exposed hydrophobic patches, secondary structures and chaperone-like activity of αA-Cry were significantly altered after exposure to the solar radiation in the presence of RF. Although glutathione and ascorbate were capable to partially protect the photo-induced structural damages of human αA-Cry, they also disrupted its chaperone function when co-exposed with this protein to the solar radiation. Also, the most promising data were obtained with cysteine which its availability in the lenticular tissues is a rate limiting factor for the biosynthesis of glutathione. Overall our results suggest that glutathione and ascorbate, as the major anti-oxidant compounds within lenticular tissues, demonstrate controversial effect on structure and chaperone-like activity of human αA-Cry. Elucidation of this effect may demand further experiments.
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Affiliation(s)
- Afrooz Anbaraki
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
| | - Maryam Ghahramani
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
| | - Konstantin O Muranov
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygin str. 4, Moscow 119991, Russia
| | - Boris I Kurganov
- Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, 33, bld. 2 Leninsky Ave., Moscow 119071, Russia
| | - Reza Yousefi
- Protein Chemistry Laboratory (PCL), Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran.
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Yeste M, Castillo-Martín M, Bonet S, Rodríguez-Gil JE. Impact of light irradiation on preservation and function of mammalian spermatozoa. Anim Reprod Sci 2018; 194:19-32. [DOI: 10.1016/j.anireprosci.2018.02.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 02/03/2018] [Accepted: 02/06/2018] [Indexed: 01/04/2023]
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Inhibition of Proliferation in U937 Cells Treated by Blue Light Irradiation and Combined Blue Light Irradiation/Drug. Int J Mol Sci 2018; 19:ijms19051464. [PMID: 29762467 PMCID: PMC5983758 DOI: 10.3390/ijms19051464] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/09/2018] [Accepted: 05/09/2018] [Indexed: 02/06/2023] Open
Abstract
The cell viability and apoptosis of tumor U937 cells treated by blue light (BL) irradiation have been examined. BL irradiation can specially inhibit the proliferation and promote the apoptosis of U937 cells, relating to the production of reactive oxygen species (ROS) and the decline of mitochondrial membrane potential (ΔΨm). The apoptosis is further associated with varying downregulated B-cell lymphoma-extra large (Bcl-XL) and B-cell lymphoma 2 (Bcl-2) genes, upregulated Bcl-2-associated X (Bax) gene, the activation of caspase-3 and caspase-9, and the cleavage of poly (ADP-ribose) polymerase (PARP) by the BL irradiation process. Moreover, BL irradiation induced proliferation inhibition is higher than that treated by a common chemotherapeutic drug of homoharringtonine (HHT). When we synergize BL irradiation with HHT (BL-HHT), a higher proliferation inhibition is obtained than that treated by BL irradiation or HHT alone. These results are helpful for establishing a low toxicity and high efficiency strategy of BL irradiation for clinical treatment of acute myeloid leukemia, not limited to U937 cells.
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Abstract
There is a clear association between dry eye disease (DED) and skin inflammatory diseases occurring in close proximity to the eyelids, such as facial skin rosacea. Intense pulsed light (IPL) is widely accepted as a treatment for skin rosacea. A number of recent studies demonstrated that, in patients suffering from meibomian gland dysfunction (MGD), IPL therapy also reduces signs and symptoms of DED. Despite these encouraging results, in the context of DED and MGD, the mechanisms of action of IPL are not well understood. The purpose of this review was to raise the potential mechanisms of action and to discuss their plausibility.
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Dourado DM, Matias R, Barbosa-Ferreira M, da Silva BAK, de Araujo Isaias Muller J, Vieira WF, da Cruz-Höfling MA. Effects of photobiomodulation therapy on Bothrops moojeni snake-envenomed gastrocnemius of mice using enzymatic biomarkers. Lasers Med Sci 2017; 32:1357-1366. [PMID: 28612300 DOI: 10.1007/s10103-017-2252-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 06/05/2017] [Indexed: 11/24/2022]
Abstract
Bothropic venom contains a range of biologically active substances capable of causing severe local and systemic envenoming symptomatology within its victims. The snake anti-venom is effective against systemic effects but has no neutralizing effect against the fast developing local effects. Herein, mice gastrocnemius injected with Bothrops moojeni venom (40 μg/kg) or saline solution were irradiated with HeNe (632.8 nm) and GaAs (904 nm) lasers (daily energy density of 4 J/cm2; 0.03/0.21 power density; 0.07/0.16 spot size; 1.2/0.04 total energy, 1 cm off contact, for HeNe and GaAs lasers, respectively) and euthanized in periods ranging from 3 h to 21 days. Blood biochemistry for creatine kinase (CK), alkaline phosphatase (ALP), acid phosphatase (AP), lactate dehydrogenase (LDH), aspartate transaminase (AST), and myoglobin and histopathological analysis, for assessing the degree of myonecrosis and regeneration of gastrocnemius, were done at every time interval. GaAs laser promoted faster photobiomodulation therapy (PBMT) effects, and the GaAs group exhibited a better clinical outcome than the HeNe group. Within the GaAs group, the serum levels of CK, LDH, AP, AST, and myoglobin, which were increased by the physiological effects of the venom, were reduced to initial baseline before snake envenomation in less time than those irradiated by the HeNe laser. However, the group receiving irradiation from the HeNe laser returned the levels of ALP activity to baseline faster than those of the GaAs group. Histopathological analysis revealed enhanced muscle regeneration in mice groups treated with both lasers. PBM promoted by GaAs and HeNe showed well-developed centrally nucleate regenerating cells and an increased number of newly formed blood vessels when compared to unirradiated muscle. We therefore suggest that GaAs had the best outcomes likely derived from a deeper penetrating longer wavelength. We conclude that PMBT is a promising, non-invasive approach to be further tested in pre-clinical studies with a goal to further its clinical use in skeletal muscle recovery in snakebite victims.
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Affiliation(s)
- Doroty Mesquita Dourado
- Laboratory of Toxinology and Medicinal Plants, Anhanguera-Uniderp University, Campus III, Street Alexandre Herculano 1400, Campo Grande, MS, 79037-280, Brazil. .,Infectious Diseases, Postgraduate Program, Federal University of Mato Grosso do Sul (UFMS), Campo Grande, MS, 79070-900, Brazil. .,Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, SP, 13083-863, Brazil.
| | - Rosemary Matias
- Environment and Regional Development, Postgraduate Program, Anhanguera-Uniderp University, Campo Grande, MS, 79037-280, Brazil
| | - Marcos Barbosa-Ferreira
- Professional Master's Program in Agroindustrial Production and Management, Anhanguera-Uniderp University, Campo Grande, MS, 79037-280, Brazil
| | | | - Jéssica de Araujo Isaias Muller
- Academic of Postgraduate in Biochemistry and Molecular Biology, Federal University of Mato Grosso do Sul (UFMS), Campo Grande, MS, 79070-900, Brazil
| | - Willians Fernando Vieira
- Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, SP, 13083-863, Brazil
| | - Maria Alice da Cruz-Höfling
- Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, SP, 13083-863, Brazil
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Abana CM, Brannon JR, Ebbott RA, Dunigan TL, Guckes KR, Fuseini H, Powers J, Rogers BR, Hadjifrangiskou M. Characterization of blue light irradiation effects on pathogenic and nonpathogenic Escherichia coli. Microbiologyopen 2017; 6. [PMID: 28332311 PMCID: PMC5552948 DOI: 10.1002/mbo3.466] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 01/27/2017] [Accepted: 02/08/2017] [Indexed: 01/09/2023] Open
Abstract
Blue light irradiation (BLI) is an FDA-approved method for treating certain types of infections, like acne, and is becoming increasingly attractive as an antimicrobial strategy as the prevalence of antibiotic-resistant "superbugs" rises. However, no study has delineated the effectiveness of BLI throughout different bacterial growth phases, especially in more BLI-tolerant organisms such as Escherichia coli. While the vast majority of E. coli strains are nonpathogenic, several E. coli pathotypes exist that cause infection within and outside the gastrointestinal tract. Here, we compared the response of E. coli strains from five phylogenetic groups to BLI with a 455 nm wavelength (BLI455 ), using colony-forming unit and ATP measurement assays. Our results revealed that BLI455 is not bactericidal, but can retard E. coli growth in a manner that is dependent on culture age and strain background. This observation is critical, given that bacteria on and within mammalian hosts are found in different phases of growth.
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Affiliation(s)
- Courtney M Abana
- Department of Chemical & Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - John R Brannon
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Rebecca A Ebbott
- Department of Biological Sciences, Vanderbilt University, Nashville, TN, USA
| | - Taryn L Dunigan
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Kirsten R Guckes
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Hubaida Fuseini
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jennifer Powers
- Vanderbilt Dermatology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Bridget R Rogers
- Department of Chemical & Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Maria Hadjifrangiskou
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
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Comparison of the alendronate and irradiation with a light-emitting diode (LED) on murine osteoclastogenesis. Lasers Med Sci 2016; 32:189-200. [DOI: 10.1007/s10103-016-2101-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Accepted: 10/17/2016] [Indexed: 11/26/2022]
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Gnanasekaran G. "Sundowning" as a biological phenomenon: current understandings and future directions: an update. Aging Clin Exp Res 2016; 28:383-92. [PMID: 26243434 DOI: 10.1007/s40520-015-0431-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 07/23/2015] [Indexed: 02/07/2023]
Abstract
The clinical phenomenon of early evening disruptive behavior also called "Sundowning" in elderly patients has been largely reported in the medical literature without a consistent diagnosis and criteria to define this phenomenon. The current understandings of sundowning are incomplete and current treatment strategies have relied heavily on use of antipsychotic medications, despite side effects and limited evidence to justify their use. A comprehensive understanding of the biogenesis of this phenomenon and mechanistic changes from oxidative pathways may provide novel information on completing the sundowning puzzle. Future studies could examine the utility of natural factors in reviving neuronal energy loss and altering the oxidative pathways might be safe and additional options in development of treatment models for this behavioral disorder.
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Silveira PCL, Ferreira KB, da Rocha FR, Pieri BLS, Pedroso GS, De Souza CT, Nesi RT, Pinho RA. Effect of Low-Power Laser (LPL) and Light-Emitting Diode (LED) on Inflammatory Response in Burn Wound Healing. Inflammation 2016; 39:1395-404. [DOI: 10.1007/s10753-016-0371-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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40
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Hopkins SL, Siewert B, Askes SHC, Veldhuizen P, Zwier R, Heger M, Bonnet S. An in vitro cell irradiation protocol for testing photopharmaceuticals and the effect of blue, green, and red light on human cancer cell lines. Photochem Photobiol Sci 2016; 15:644-53. [PMID: 27098927 PMCID: PMC5044800 DOI: 10.1039/c5pp00424a] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 03/30/2016] [Indexed: 12/21/2022]
Abstract
Traditionally, ultraviolet light (100-400 nm) is considered an exogenous carcinogen while visible light (400-780 nm) is deemed harmless. In this work, a LED irradiation system for in vitro photocytotoxicity testing is described. The LED irradiation system was developed for testing photopharmaceutical drugs, but was used here to determine the basal level response of human cancer cell lines to visible light of different wavelengths, without any photo(chemo)therapeutic. The effects of blue (455 nm, 10.5 mW cm(-2)), green (520 nm, 20.9 mW cm(-2)), and red light (630 nm, 34.4 mW cm(-2)) irradiation was measured for A375 (human malignant melanoma), A431 (human epidermoid carcinoma), A549 (human lung carcinoma), MCF7 (human mammary gland adenocarcinoma), MDA-MB-231 (human mammary gland adenocarcinoma), and U-87 MG (human glioblastoma-grade IV) cell lines. In response to a blue light dose of 19 J cm(-2), three cell lines exhibited a minimal (20%, MDA-MB-231) to moderate (30%, A549 and 60%, A375) reduction in cell viability, compared to dark controls. The other cell lines were not affected. Effective blue light doses that produce a therapeutic response in 50% of the cell population (ED50) compared to dark conditions were found to be 10.9 and 30.5 J cm(-2) for A375 and A549 cells, respectively. No adverse effects were observed in any of the six cell lines irradiated with a 19 J cm(-2) dose of 520 nm (green) or 630 nm (red) light. The results demonstrate that blue light irradiation can have an effect on the viability of certain human cancer cell types and controls should be used in photopharmaceutical testing, which uses high-energy (blue or violet) visible light activation.
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Affiliation(s)
- S. L. Hopkins
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2300RA Leiden , The Netherlands .
| | - B. Siewert
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2300RA Leiden , The Netherlands .
| | - S. H. C. Askes
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2300RA Leiden , The Netherlands .
| | - P. Veldhuizen
- Leiden Institute of Physics , Leiden University , Niels Bohrweg 2 , 2333CA Leiden , The Netherlands
| | - R. Zwier
- Leiden Institute of Physics , Leiden University , Niels Bohrweg 2 , 2333CA Leiden , The Netherlands
| | - Michal Heger
- Department of Experimental Surgery , Academic Medical Center , University of Amsterdam , Meibergdreef 9 , 1105 AZ Amsterdam , The Netherlands
| | - Sylvestre Bonnet
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2300RA Leiden , The Netherlands .
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de Freitas LF, Hamblin MR. Proposed Mechanisms of Photobiomodulation or Low-Level Light Therapy. IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS : A PUBLICATION OF THE IEEE LASERS AND ELECTRO-OPTICS SOCIETY 2016; 22:7000417. [PMID: 28070154 PMCID: PMC5215870 DOI: 10.1109/jstqe.2016.2561201] [Citation(s) in RCA: 700] [Impact Index Per Article: 87.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Photobiomodulation (PBM) also known as low-level laser (or light) therapy (LLLT), has been known for almost 50 years but still has not gained widespread acceptance, largely due to uncertainty about the molecular, cellular, and tissular mechanisms of action. However, in recent years, much knowledge has been gained in this area, which will be summarized in this review. One of the most important chromophores is cytochrome c oxidase (unit IV in the mitochondrial respiratory chain), which contains both heme and copper centers and absorbs light into the near-infra-red region. The leading hypothesis is that the photons dissociate inhibitory nitric oxide from the enzyme, leading to an increase in electron transport, mitochondrial membrane potential and ATP production. Another hypothesis concerns light-sensitive ion channels that can be activated allowing calcium to enter the cell. After the initial photon absorption events, numerous signaling pathways are activated via reactive oxygen species, cyclic AMP, NO and Ca2+, leading to activation of transcription factors. These transcription factors can lead to increased expression of genes related to protein synthesis, cell migration and proliferation, anti-inflammatory signaling, anti-apoptotic proteins, antioxidant enzymes. Stem cells and progenitor cells appear to be particularly susceptible to LLLT.
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Affiliation(s)
- Lucas Freitas de Freitas
- Programa de Pós-Graduação
Interunidades Bioengenharia, University of São Paulo, São Carlos -
SP, Brazil
- Wellman Center for Photomedicine, Harvard Medical School,
Boston, MA 02114, USA
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Harvard Medical School,
Boston, MA 02114, USA
- Department of Dermatology, Harvard Medical School, Boston,
MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology,
Cambridge, MA 02139, USA
- Correspondence: Michael R Hamblin,
; Tel 1-617-726-6182
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Wagner VP, Curra M, Webber LP, Nör C, Matte U, Meurer L, Martins MD. Photobiomodulation regulates cytokine release and new blood vessel formation during oral wound healing in rats. Lasers Med Sci 2016; 31:665-71. [PMID: 26868031 DOI: 10.1007/s10103-016-1904-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/02/2016] [Indexed: 12/29/2022]
Abstract
The aim of the present study was to evaluate the effects of photobiomodulation (PBM) on cytokine levels and angiogenesis during oral wound healing. Ulcers were made on the dorsum of the tongue in 48 Wistar rats. Irradiation with an indium-gallium-aluminum-phosphide (InGaAlP) laser (660 nm; output power, 40 mW; spot size, 0.04 cm(2)) was performed once a day on two points of the ulcer for 14 days. Two different energy densities were used: 4 J/cm(2) (energy per point 0.16 J, total energy 0.32 J) and 20 J/cm(2) (energy per point 0.8 J, total energy 1.6 J). Tissue levels of interleukin (IL)-1β and tumor necrosis factor (TNF)-α were investigated by enzyme-linked immunosorbent assay (ELISA). Image analysis of CD31-immunostained sections was used to investigate microvessel density (MVD). PBM increased the tissue levels of IL-1β at the early stage of oral wound healing (p < 0.01) and increased the tissue levels of TNF-α during all stages of oral wound healing (p < 0.05). PBM at a dose of 4 J/cm(2) produced more significant results regarding cytokine modulation and was associated with higher MVD at day 5. Collectively, these findings indicate that cytokine modulation and increased angiogenesis are among the basic mechanisms whereby PBM improves oral wound repair.
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Affiliation(s)
- Vivian Petersen Wagner
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Marina Curra
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Liana Preto Webber
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Carolina Nör
- Cancer Research Laboratory, University Hospital Research Center (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ursula Matte
- Gene Therapy Center, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Luise Meurer
- Department of Pathology, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Manoela Domingues Martins
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
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Sommer AP, Mester AR, Trelles MA. Tuning the mitochondrial rotary motor with light. ANNALS OF TRANSLATIONAL MEDICINE 2016; 3:346. [PMID: 26807401 DOI: 10.3978/j.issn.2305-5839.2015.12.06] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Skin surface temperature has been proposed as an in vivo clinical biomarker for monitoring the detrimental effect of biostimulatory laser applications. In some cases, such as wound healing and cosmetic applications, the target of the irradiation is the skin surface. In other cases, the light has to reach deeper tissues, for instance, during the irradiation of internal body organs. Prerequisite for reproducible biostimulatory effects is that the light intensity surpasses a minimum threshold. Because of the loss of light intensity caused by absorption and scattering, targeting deeper tissues always implies that the intensity at the skin surface will be much higher than that at the target site. Derived from laboratory experiments which showed that virtually the same light which produces biostimulatory effects in cells in vitro and tissues in vivo is instrumental in reducing the viscous friction in nanoconfined systems, we arrive to a new understanding of the effect of biostimulatory levels of light on mitochondria. One immediate result is insight into strategies which promise to maximize the biostimulatory effect and minimize potential phototoxic effects during treatment of deeper tissues. Such optimization strategies are also promising for experimental and therapeutic in vitro applications, in particular in combination with cell-friendly microenvironments.
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Affiliation(s)
- Andrei P Sommer
- 1 Institute for Micro and Nanomaterials, University of Ulm, 89081 Ulm, Germany ; 2 National Laser Therapy Centre, Peterfy Sandor Teaching Hospital, Budapest, Hungary ; 3 Instituto Medico Vilafortuny, Cambrils, Tarragona, Spain
| | - Adam R Mester
- 1 Institute for Micro and Nanomaterials, University of Ulm, 89081 Ulm, Germany ; 2 National Laser Therapy Centre, Peterfy Sandor Teaching Hospital, Budapest, Hungary ; 3 Instituto Medico Vilafortuny, Cambrils, Tarragona, Spain
| | - Mario A Trelles
- 1 Institute for Micro and Nanomaterials, University of Ulm, 89081 Ulm, Germany ; 2 National Laser Therapy Centre, Peterfy Sandor Teaching Hospital, Budapest, Hungary ; 3 Instituto Medico Vilafortuny, Cambrils, Tarragona, Spain
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44
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Sohn H, Ko Y, Park M, Kim D, Moon YL, Jeong YJ, Lee H, Moon Y, Jeong BC, Kim O, Lim W. Effects of light-emitting diode irradiation on RANKL-induced osteoclastogenesis. Lasers Surg Med 2015; 47:745-55. [DOI: 10.1002/lsm.22413] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2015] [Indexed: 01/24/2023]
Affiliation(s)
- HongMoon Sohn
- Department of Orthopaedic Surgery; Chosun University Hospital; Dong-Gu Gwangju Korea
| | - Youngjong Ko
- Department of Orthopaedic Surgery; Chosun University Hospital; Dong-Gu Gwangju Korea
| | - Mineon Park
- Department of Orthopaedic Surgery; Chosun University Hospital; Dong-Gu Gwangju Korea
| | - Donghwi Kim
- Department of Orthopaedic Surgery; Chosun University Hospital; Dong-Gu Gwangju Korea
| | - Young Lae Moon
- Department of Orthopaedic Surgery; Chosun University Hospital; Dong-Gu Gwangju Korea
| | - Yeon Joo Jeong
- Department of Orthopaedic Surgery; Chosun University Hospital; Dong-Gu Gwangju Korea
| | - Hyeonjun Lee
- Department of Orthopaedic Surgery; Chosun University Hospital; Dong-Gu Gwangju Korea
| | - Yeonhee Moon
- Department of Dental Hygiene; Chodang University; Jeollanam-do South Korea
| | - Byung-Chul Jeong
- Medical Research Center for Biomineralization Disorders, School of Dentistry; Chonnam National University; Gwangju Korea
| | - Okjoon Kim
- Department of Oral Pathology, School of Dentistry; Chonnam National University; Bug-Gu Gwangju Korea
| | - Wonbong Lim
- Department of Orthopaedic Surgery; Chosun University Hospital; Dong-Gu Gwangju Korea
- Department of Premedical Program, School of Medicine; Chosun University; Dong-Gu Gwangju Korea
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45
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Khan I, Tang E, Arany P. Molecular pathway of near-infrared laser phototoxicity involves ATF-4 orchestrated ER stress. Sci Rep 2015; 5:10581. [PMID: 26030745 PMCID: PMC4450753 DOI: 10.1038/srep10581] [Citation(s) in RCA: 304] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 04/17/2015] [Indexed: 11/24/2022] Open
Abstract
High power lasers are used extensively in medicine while lower power applications are popular for optical imaging, optogenetics, skin rejuvenation and a therapeutic modality termed photobiomodulation (PBM). This study addresses the therapeutic dose limits, biological safety and molecular pathway of near-infrared (NIR) laser phototoxicity. Increased erythema and tissue damage were noted in mice skin and cytotoxicity in cell cultures at phototoxic laser doses involving generation of reactive oxygen species (ROS) coupled with a rise in surface temperature (>45 °C). NIR laser phototoxicity results from Activating Transcription Factor-4 (ATF-4) mediated endoplasmic reticulum stress and autophagy. Neutralizations of heat or ROS and overexpressing ATF-4 were noted to rescue NIR laser phototoxicity. Further, NIR laser mediated phototoxicity was noted to be non-genotoxic and non-mutagenic. This study outlines the mechanism of NIR laser phototoxicity and the utility of monitoring surface temperature and ATF4 expression as potential biomarkers to develop safe and effective clinical applications.
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Affiliation(s)
- Imran Khan
- Cell Regulation and Control Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda MD
| | - Elieza Tang
- Cell Regulation and Control Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda MD
| | - Praveen Arany
- Cell Regulation and Control Unit, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda MD
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46
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Fornaini C, Pelosi A, Queirolo V, Vescovi P, Merigo E. The "at-home LLLT" in temporo-mandibular disorders pain control: a pilot study. Laser Ther 2015; 24:47-52. [PMID: 25941425 PMCID: PMC4416145 DOI: 10.5978/islsm.15-or-06] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Accepted: 01/30/2015] [Indexed: 01/15/2023]
Abstract
OBJECTIVES The Temporo-Mandibular Disorders (TMD) are a set of dysfunctional patterns concerning the temporo-mandibular joints (TMJ) and the masticatory muscles; its main symptom is pain, probably caused by inflammatory changes in the synovial membrane, alterations in the bone marrow of the mandibular condyle and impingement and compression. The aim of this preliminary study was to investigate the effectiveness in the TMD pain reduction of a new laser device recently proposed by the commerce that, due to its reduced dimensions and to be a class I laser according the ANSI classification, may be used at home by the patient himself. MATERIAL AND METHODS Twenty-four patients with TMD were randomly selected: the inclusion criteria for the sample was the diagnosis of mono- or bi-lateral TMD, with acute pain restricted to the joint area, associated with the absence of any muscle tenderness during palpation. The patients were randomly assigned to two groups: Group 1 (12 patients): patients receiving real LLLT (experimental group). Group 2 (12 patients): patients receiving inactive laser (placebo group). The treatment was performed once a day for two weeks with an 808 nm diode laser by the patient himself with irradiation of the cutaneous zone corresponding to the TMJ for 15 minutes each side. Each patient was instructed to express its pain in a visual analogue scale (VAS) making a perpendicular line between the two extremes representing the felt pain level. Statistical analysis was realized with GraphPad Instat Software, where P<0.05 was considered significant and P<0.01 very significant. RESULTS The patient's pain evaluation was expressed in the two study groups before the treatment, 1 week and two weeks after the treatment. The differences between the two groups result extremely significant with p<0.0001 for the comparison of VAS value after 1 and 2 weeks. CONCLUSION This study, even if it may be considered such a pilot study, investigated a new way to control the pain in the temporo-mandibular diseases by an at home self administered laser device. RESULTS are encouraging but they will have to be confirmed by greater studies.
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Affiliation(s)
- C Fornaini
- Department of Biomedical, Biotechnological and Translational Sciences (S.Bi.Bi.T.), University of Parma, Italy
| | - A Pelosi
- Department of Biomedical, Biotechnological and Translational Sciences (S.Bi.Bi.T.), University of Parma, Italy
| | - V Queirolo
- Department of Biomedical, Biotechnological and Translational Sciences (S.Bi.Bi.T.), University of Parma, Italy
| | - P Vescovi
- Department of Biomedical, Biotechnological and Translational Sciences (S.Bi.Bi.T.), University of Parma, Italy
| | - E Merigo
- Department of Biomedical, Biotechnological and Translational Sciences (S.Bi.Bi.T.), University of Parma, Italy
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47
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Baldan CS, Masson IF, Júnior IE, Baldan AMS, Machado AFP, Casaroto RA, Liebano RE. Inhibitory effects of low-level laser therapy on skin-flap survival in a rat model. Plast Surg (Oakv) 2015. [DOI: 10.1177/229255031502300106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Although several studies have demonstrated the effects of low-level laser therapy (LLLT) on skin flap viability, the role of higher doses has been poorly investigated. Objective To investigate the inhibitory effect of the LLLT (λ=670 nm) on the viability of random skin flaps in a rat model using an irradiation energy of 2.79 J at each point. Methods Sixteen Wistar rats were randomly assigned into two groups: sham laser irradiation (n=8); and active laser irradiation (n=8). Animals in the active laser irradiation group were irradiated with a 670 nm diode laser with an energy of 2.79 J/point, a power output 30 mW, a beam area of 0.028 cm2, an energy density of 100 J/cm2, an irradiance of 1.07 W/cm2 for 93 s/point. Irradiation was performed in 12 points in the cranial skin flap portion. The total energy irradiated on the tissue was 33.48 J. The necrotic area was evaluated on postoperative day 7. Results The sham laser irradiation group presented a mean (± SD) necrotic area of 47.96±3.81%, whereas the active laser irradiation group presented 62.24±7.28%. There was a significant difference in skin-flap necrosis areas between groups (P=0.0002). Conclusion LLLT (λ=670 nm) increased the necrotic area of random skin flaps in rats when irradiated with an energy of 2.79 J (100 J/cm2).
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Photobleaching of the resonance Raman lines of cytochromes in living yeast cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 141:269-74. [PMID: 25463677 DOI: 10.1016/j.jphotobiol.2014.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 09/17/2014] [Accepted: 10/11/2014] [Indexed: 01/25/2023]
Abstract
The photobleaching of the resonance cytochrome Raman lines in living Saccharomyces cerevisiae cells was studied. The photobleaching rate versus the irradiation power was described by square function plus a constant in contrast to the linear dependence of the photoinjury rate. This difference distinguishes the cytochrome photooxidation from other processes of the cell photodamage. The square dependence is associated with the reaction involving two photogenerated intermediates while the constant with the dark redox balance rates. This work demonstrates a potential of Raman spectroscopy to characterize the native cytochrome reaction rates and to study the cell photodamage precursors.
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Chang WD, Lee CL, Lin HY, Hsu YC, Wang CJ, Lai PT. A Meta-analysis of Clinical Effects of Low-level Laser Therapy on Temporomandibular Joint Pain. J Phys Ther Sci 2014; 26:1297-300. [PMID: 25202201 PMCID: PMC4155240 DOI: 10.1589/jpts.26.1297] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 02/16/2014] [Indexed: 02/06/2023] Open
Abstract
[Purpose] Temporomandibular joint (TMJ) pain is a symptom of TMJ disease. Low-level laser therapy (LLLT) is often used in the clinical treatment of TMJ pain. The aim of this study was to review the effective parameters of LLLT for TMJ pain. [Methods] This study was a systematic review in which electronic databases were searched for the period of January 2005 to January 2010. We selected reports of randomized controlled trials and calculated the effect size (ES) of the pain relief to evaluate the effect of LLLT. [Results] Seven reports are found to meet the inclusion criteria and discussed. Based on the calculation results, the pooled ES was -0.6, indicating a moderate effect of pain relief. In addition, the dosages and treatments with wavelengths of 780 and 830 nm can cause moderate and large pain relief effects. [Conclusion] Use of LLLT on the masticatory muscle or joint capsule for TMJ pain had a moderate analgesic effect. The optimal parameters for LLLT to treat TMJ pain have not been confirmed. However, our results can be a vital clinical reference for clinical physicians in treatment of patients with TMJ pain.
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Affiliation(s)
- Wen-Dien Chang
- Department of Sports Medicine, China Medical University, Taiwan
| | - Chia-Lun Lee
- Physical Education Section of General Education, National Sun Yat-sen University, Taiwan
| | - Hung-Yu Lin
- Department of Occupational Therapy, I-Shou University, Taiwan
| | - Yung-Chun Hsu
- Rehabilitation Therapy Center, Tungs' Taichung MetroHarbor Hospital, Taiwan
| | - Chung-Jieh Wang
- Department of Rehabilitation Science, Jen-Teh Junior College of Medicine, Nursing and Management, Taiwan
| | - Ping-Tung Lai
- Department of Physical Therapy and Rehabilitation, Da-Chien General Hospital, Taiwan
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50
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Navrátil L, Navratil V, Hajkova S, Hlinakova P, Dostalova T, Vranová J. Comprehensive treatment of temporomandibular joint disorders. Cranio 2014; 32:24-30. [PMID: 24660643 DOI: 10.1179/0886963413z.0000000002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
AIMS Changing lifestyles, decreasing physical activity, which is increasing the number of degenerative joint diseases of various etiology, and certain dental procedures are increasing the number of patients complaining of pain in their temporomandibular joints. The aim of the study was to assess the benefits of comprehensive physiotherapy sessions in order to decrease the number of temporomandibular joint problems, thereby improving the patient's quality of life. METHODOLOGY An examination by a dentist determined each patient's treatment plan, which consisted of a medical exam, physical therapy and education. Each form of treatment was applied 10 times at intervals of 7-14 days. The main goal of the therapeutic physical education was to redress the muscle imbalance in the mandibular joint. This was achieved by restoring balance between the masticatory muscles, along with releasing the spastic shrouds found in the masticatory muscles. The aim of education was to teach the patient exercises focused on the temporomandibular joint and masticatory muscles. The intensity of the exercises and their composition were individually adjusted and adapted to their current state. Physical therapy consisted of the application of pulsed magnetic therapy, laser therapy, and non-invasive positive thermotherapy. RESULTS The above procedure was conducted on a therapeutic group of 24 patients (3 men and 20 women). In the course of therapy, there were no complications, and all patients adhered to the prescribed regime. None reported any side effects. The mean treatment duration was 123 +/- 66 days. The outcome of the therapy was evaluated as described in the methodology, the degree of pain affecting the joint, and the opening ability of the mouth. In both parameters, there was a significant decline in patient pain. CONCLUSIONS In a study devoted to tactics of rehabilitation treatment for temporomandibular joint disorders, the need for comprehensive long-term therapy, involving education, and learning proper chewing habits was made apparent for recovery and pain reduction. A priority in physical therapy, and combinations of pulsed magnetic therapy and hyperthermia-positive peloids, are also beneficial.
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