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Ferrando S, Agas D, Mirata S, Signore A, De Angelis N, Ravera S, Utyuzh AS, Parker S, Sabbieti MG, Benedicenti S, Amaroli A. The 808 nm and 980 nm infrared laser irradiation affects spore germination and stored calcium homeostasis: A comparative study using delivery hand-pieces with standard (Gaussian) or flat-top profile. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 199:111627. [PMID: 31536925 DOI: 10.1016/j.jphotobiol.2019.111627] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 08/20/2019] [Accepted: 09/10/2019] [Indexed: 01/21/2023]
Abstract
Photobiomodulation relies on the transfer of energy from incident photons to a cell photoacceptor. For many years the concept of photobiomodulation and its outcome has been based upon a belief that the sole receptor within the cell was the mitochondrion. Recently, it has become apparent that there are other photoacceptors operating in different regions of the electromagnetic spectrum. Alternative photoacceptors would appear to be water and mechanisms regulating calcium homeostasis, despite a direct effect of laser photonic energy on intracellular calcium concentration outwith mitochondrial activity or influence, have not been clearly demonstrated. Therefore, to increase the knowledge of intracellular‑calcium and laser photon interaction, as well as to demonstrate differences in irradiation profiles with modern hand-pieces, we tested and compared the photobiomodulatory effect of 808 nm and 980 nm diode laser light by low- and higher-energy (60s, 100 mW/cm2, 100 mW/cm2, 500 mW/cm2, 1000 mW/cm2, 1500 mW/cm2, 2000 mW/cm2) irradiated with a "standard" (Gaussian fluence distribution) hand-piece or with a "flat-top" (uniform fluence) hand-piece. For this purpose, we used the eukaryote unicellular-model Dictyostelium discoideum. The 808 nm and 980 nm infrared laser light, at the energy tested directly affect the stored Ca2+ homeostasis, independent of the mitochondrial respiratory chain activities. From an organism perspective, the effect on Ca2+-dependent signal transduction as the regulator of spore germination in Dictyostelium, demonstrates how a cell can respond quickly to the correct laser photonic stimulus through a different cellular pathway than the known light-chromophore(mitochondria) interaction. Additionally, both hand-piece designs tested were able to photobiomodulate the D. discoideum cell; however, the hand-piece with a flat-top profile, through uniform fluence levels allows more effective and reproducible effects.
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Affiliation(s)
- Sara Ferrando
- Laboratory of New Model Organism (NeMo LAB), Department of Earth, Environmental and Life Sciences, University of Genova, Genova, Italy
| | - Dimitrios Agas
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino,Macerata, Italy
| | - Serena Mirata
- Laboratory of New Model Organism (NeMo LAB), Department of Earth, Environmental and Life Sciences, University of Genova, Genova, Italy
| | - Antonio Signore
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences (D.I.S.C), University of Genova, Genova, Italy; Faculty of Therapeutic Stomatology, Institute of Dentistry, I. M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Nicola De Angelis
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences (D.I.S.C), University of Genova, Genova, Italy; University of Technology MARA, Department of Dentistry, Sungai Buloh, Malaysia
| | - Silvia Ravera
- Department of Experimental Medicine, University of Genova, Genova, Italy
| | - Anatoliy S Utyuzh
- Department of Orthopaedic Dentistry, Sechenov First Moscow State Medical University, Trubetzkaya St., 8, Bd. 2, 119991 Moscow, Russian Federation
| | - Steven Parker
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences (D.I.S.C), University of Genova, Genova, Italy
| | - Maria Giovanna Sabbieti
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino,Macerata, Italy
| | - Stefano Benedicenti
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences (D.I.S.C), University of Genova, Genova, Italy
| | - Andrea Amaroli
- Laser Therapy Centre, Department of Surgical and Diagnostic Sciences (D.I.S.C), University of Genova, Genova, Italy; Department of Orthopaedic Dentistry, Sechenov First Moscow State Medical University, Trubetzkaya St., 8, Bd. 2, 119991 Moscow, Russian Federation.
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Zlatkovic-Svenda MI, Leitner C, Lazovic B, Petrovic DM. Complex Regional Pain Syndrome (Sudeck Atrophy) Prevention Possibility and Accelerated Recovery in Patients with Distal Radius at the Typical Site Fracture Using Polarized, Polychromatic Light Therapy. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2019; 37:233-239. [DOI: 10.1089/photob.2018.4544] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Mirjana I. Zlatkovic-Svenda
- Internal Medicine Specialist-Rheumatologist, Institute of Rheumatology, University of Belgrade School of Medicine, Belgrade, Serbia
- University of East Sarajevo Medical Faculty, Republika Srpska, Lukavica, Bosnia and Herzegovina
| | | | - Biljana Lazovic
- Internal Medicine Specialist, University Clinical Hospital Center Zemun, University of Belgrade School of Medicine, Belgrade, Serbia
| | - Dejana M. Petrovic
- Physical Medicine and Rehabilitation Specialist, The Belgrade City Institute of Gerontology, Belgrade, Serbia
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An 808-nm Diode Laser with a Flat-Top Handpiece Positively Photobiomodulates Mitochondria Activities. Photomed Laser Surg 2016; 34:564-571. [PMID: 27622977 DOI: 10.1089/pho.2015.4035] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE Photobiomodulation is proposed as a non-linear process. Only the action of light at a low intensity and fluence is assumed to have stimulation on cells; whereas a higher light intensity and fluence generates negative effects, exhausting the cell's energy reserve as a consequence of a too strong stimulation. In our work, we detected the photobiomodulatory effect of an 808-nm higher-fluence diode laser [64 J/cm2-1 W, continuous wave (CW)] irradiated by a flat-top handpiece on mitochondria activities, such as oxygen consumption, activity of mitochondria complexes I, II, III, and IV, and cytochrome c as well as ATP synthesis. MATERIALS AND METHODS The experiments are performed by standard procedure on mitochondria purified from bovine liver. RESULTS Our higher-fluence diode laser positively photobiomodulates the mitochondria oxygen consumption, the activity of the complexes III and IV, and the ATP production, with a P/O = 2.6. The other activities are not influenced. CONCLUSION Our data show for the first time that even the higher fluences (64 J/cm2-1 W), similar to the low fluences, can photobiostimulate the mitochondria respiratory chain without uncoupling them and can induce an increment in the ATP production. These results suggest that the negative effects of higher fluences observed to date are not unequivocally due to higher fluence per se but might be a consequence of the irradiation carried by handpieces with a Gaussian profile.
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Liebert AD, Chow RT, Bicknell BT, Varigos E. Neuroprotective Effects Against POCD by Photobiomodulation: Evidence from Assembly/Disassembly of the Cytoskeleton. J Exp Neurosci 2016; 10:1-19. [PMID: 26848276 PMCID: PMC4737522 DOI: 10.4137/jen.s33444] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 12/09/2015] [Accepted: 12/15/2015] [Indexed: 02/07/2023] Open
Abstract
Postoperative cognitive dysfunction (POCD) is a decline in memory following anaesthesia and surgery in elderly patients. While often reversible, it consumes medical resources, compromises patient well-being, and possibly accelerates progression into Alzheimer's disease. Anesthetics have been implicated in POCD, as has neuroinflammation, as indicated by cytokine inflammatory markers. Photobiomodulation (PBM) is an effective treatment for a number of conditions, including inflammation. PBM also has a direct effect on microtubule disassembly in neurons with the formation of small, reversible varicosities, which cause neural blockade and alleviation of pain symptoms. This mimics endogenously formed varicosities that are neuroprotective against damage, toxins, and the formation of larger, destructive varicosities and focal swellings. It is proposed that PBM may be effective as a preconditioning treatment against POCD; similar to the PBM treatment, protective and abscopal effects that have been demonstrated in experimental models of macular degeneration, neurological, and cardiac conditions.
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Affiliation(s)
| | - Roberta T. Chow
- Brain and Mind Institute, University of Sydney, Sydney, NSW, Australia
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Immediate effects of low-intensity laser (808 nm) on fatigue and strength of spastic muscle. Lasers Med Sci 2015; 30:1089-96. [PMID: 25614133 DOI: 10.1007/s10103-014-1702-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 12/15/2014] [Indexed: 10/24/2022]
Abstract
The cerebrovascular accident (CVA), high-impact disease II, affects the basic functions of the limbs, leading to changes of sensory, language, and motor functions. The search for resources that minimize the damage caused by this disease grows every day. The clinical use of low-intensity laser therapy (LILT) has provided major breakthroughs in the treatment of muscular disorders and prevention of muscle fatigue. Thus, the objective of the present study is to analyze the answers and immediate adaptations of the rectus femoris and vastus medialis of spastic hemiparetic patients, facing the increase in peak torque and triggering muscle fatigue, after application of LILT. Double-blind clinical trials were conducted with 15 volunteers post-CVA with spasticity, of both genders, between 40 and 80 years old. To this end, the volunteers went through three consecutive stages of rating (control, placebo, and laser). All performed tests of isometric contraction on the patient's hemiparetic side. Significant differences were observed with regard to the increase in muscle performance (p = 0.0043) and the reduction in blood lactate concentration (p < 0.0001) of the post-LILT muscles. The LILT (diode laser, l100 mW 808 nm, 4.77 J/cm(2)/point, 40 s/AP) can be employed during and after spastic muscle-strengthening exercises, contributing to the improvement of motor function of the patient. After application of LILT, we found increased torque as well as decreased in lactate level in patients with spasticity.
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Chow R, Armati P, Laakso EL, Bjordal JM, Baxter GD. Inhibitory Effects of Laser Irradiation on Peripheral Mammalian Nerves and Relevance to Analgesic Effects: A Systematic Review. Photomed Laser Surg 2011; 29:365-81. [DOI: 10.1089/pho.2010.2928] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Roberta Chow
- Nerve Research Foundation, Brain and Mind Research Institute, The University of Sydney, Camperdown, New South Wales, Australia
| | - Patricia Armati
- Nerve Research Foundation, Brain and Mind Research Institute, The University of Sydney, Camperdown, New South Wales, Australia
| | - E-Liisa Laakso
- Convenor Physiotherapy Programs, School of Physiotherapy and Exercise Science, Griffith Health Institute, Gold Coast Campus, Griffith University, Queensland, Australia
| | - Jan M. Bjordal
- Faculty of Health and Social Science, Centre for Evidence-Based Practice, Bergen University College, Mollendalsvn, Bergen, Norway
| | - G. David Baxter
- School of Physiotherapy, University of Otago, Dunedin, New Zealand
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Ahmed NAEH, Radwan NM, Ibrahim KM, Khedr ME, El Aziz MA, Khadrawy YA. Effect of Three Different Intensities of Infrared Laser Energy on the Levels of Amino Acid Neurotransmitters in the Cortex and Hippocampus of Rat Brain. Photomed Laser Surg 2008; 26:479-88. [DOI: 10.1089/pho.2007.2190] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | | | - Mona Emam Khedr
- Medical Physiology Department, National Research Center, Dokki, Giza, Egypt
| | - Mona A. El Aziz
- Department of Biotechnology, National Institute of Laser Enhanced Sciences, Cairo University, Cairo, Egypt
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Breitbart H, Levinshal T, Cohen N, Friedmann H, Lubart R. Changes in calcium transport in mammalian sperm mitochondria and plasma membrane irradiated at 633 nm (HeNe laser). JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 1996; 34:117-21. [PMID: 8810529 DOI: 10.1016/1011-1344(95)07281-0] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The effect of light on calcium transport in mammalian sperm mitochondria and plasma membrane was studied. Digitonine-treated spermatozoa and plasma membrane vesicles were irradiated with an HeNe laser at various powers and energy doses and Ca2+ uptake was measured by the filtration method. It was found that there is an accelerated Ca2+ uptake by the mitochondria after low power HeNe irradiation and inhibition after high power. The flux of Ca2+ from the mitochondria was also examined and was found to be unaffected by the HeNe light. The ATP-dependent Ca2+ uptake by the bovine plasma membrane vesicles was not changed by the HeNe irradiation.
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Affiliation(s)
- H Breitbart
- Department of Life Sciences, Bar-Ilan University, Ramat Gan, Israel
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