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Choi K, Kim H, Nam SY, Heo CY. Enhancement of skin rejuvenation and hair growth through novel near-infrared light emitting diode (nNIR) lighting: in vitro and in vivo study. Lasers Med Sci 2024; 39:104. [PMID: 38630175 PMCID: PMC11024053 DOI: 10.1007/s10103-024-04044-9] [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: 09/06/2023] [Accepted: 03/21/2024] [Indexed: 04/19/2024]
Abstract
The study aimed to explore the impact of a novel near-infrared LED (nNIR) with an extended spectrum on skin enhancement and hair growth. Various LED sources, including White and nNIRs, were compared across multiple parameters: cytotoxicity, adenosine triphosphate (ATP) synthesis, reactive oxygen species (ROS) reduction, skin thickness, collagen synthesis, collagenase expression, and hair follicle growth. Experiments were conducted on human skin cells and animal models. Cytotoxicity, ATP synthesis, and ROS reduction were evaluated in human skin cells exposed to nNIRs and Whites. LED irradiation effects were also studied on a UV-induced photoaging mouse model, analyzing skin thickness, collagen synthesis, and collagenase expression. Hair growth promotion was examined as well. Results revealed both White and nNIR were non-cytotoxic to human skin cells. nNIR enhanced ATP and collagen synthesis while reducing ROS levels, outperforming the commonly used 2chip LEDs. In the UV-induced photoaging mouse model, nNIR irradiation led to reduced skin thickness, increased collagen synthesis, and lowered collagenase expression. Additionally, nNIR irradiation stimulated hair growth, augmented skin thickness, and increased hair follicle count. In conclusion, the study highlighted positive effects of White and nNIR irradiation on skin and hair growth. However, nNIR exhibited superior outcomes compared to White. Its advancements in ATP content, collagen synthesis, collagenase inhibition, and hair growth promotion imply increased ATP synthesis activity. These findings underscore nNIR therapy's potential as an innovative and effective approach for enhancing skin and promoting hair growth.
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Affiliation(s)
- Keonwoo Choi
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Korean Institute of Nonclinical Study, Seongnam, Republic of Korea
- H&BIO Corporation/R&D Center, Seongnam, Republic of Korea
| | - Hongbin Kim
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Korean Institute of Nonclinical Study, Seongnam, Republic of Korea
- H&BIO Corporation/R&D Center, Seongnam, Republic of Korea
| | - Sun-Young Nam
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- H&BIO Corporation/R&D Center, Seongnam, Republic of Korea
| | - Chan Yeong Heo
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.
- Korean Institute of Nonclinical Study, Seongnam, Republic of Korea.
- H&BIO Corporation/R&D Center, Seongnam, Republic of Korea.
- Department of Plastic and Reconstructive Surgery, College of Medicine, Seoul National University, Seoul, Republic of Korea.
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Moradi Vastegani S, Nasrolahi A, Ghaderi S, Belali R, Rashno M, Farzaneh M, Khoshnam SE. Mitochondrial Dysfunction and Parkinson's Disease: Pathogenesis and Therapeutic Strategies. Neurochem Res 2023:10.1007/s11064-023-03904-0. [PMID: 36943668 DOI: 10.1007/s11064-023-03904-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/21/2023] [Accepted: 02/28/2023] [Indexed: 03/23/2023]
Abstract
Parkinson's disease (PD) is a common age-related neurodegenerative disorder whose pathogenesis is not completely understood. Mitochondrial dysfunction and increased oxidative stress have been considered as major causes and central events responsible for the progressive degeneration of dopaminergic (DA) neurons in PD. Therefore, investigating mitochondrial disorders plays a role in understanding the pathogenesis of PD and can be an important therapeutic target for this disease. This study discusses the effect of environmental, genetic and biological factors on mitochondrial dysfunction and also focuses on the mitochondrial molecular mechanisms underlying neurodegeneration, and its possible therapeutic targets in PD, including reactive oxygen species generation, calcium overload, inflammasome activation, apoptosis, mitophagy, mitochondrial biogenesis, and mitochondrial dynamics. Other potential therapeutic strategies such as mitochondrial transfer/transplantation, targeting microRNAs, using stem cells, photobiomodulation, diet, and exercise were also discussed in this review, which may provide valuable insights into clinical aspects. A better understanding of the roles of mitochondria in the pathophysiology of PD may provide a rationale for designing novel therapeutic interventions in our fight against PD.
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Affiliation(s)
- Sadegh Moradi Vastegani
- Persian Gulf Physiology Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ava Nasrolahi
- Infectious Ophthalmologic Research Center, Imam Khomeini Hospital Clinical Research Development Unit, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Shahab Ghaderi
- Department of Neuroscience, School of Science and Advanced Technologies in Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Rafie Belali
- Persian Gulf Physiology Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Masome Rashno
- Asadabad School of Medical Sciences, Asadabad, Iran
- Student Research Committee, Asadabad School of Medical Sciences, Asadabad, Iran
| | - Maryam Farzaneh
- Fertility, Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Seyed Esmaeil Khoshnam
- Persian Gulf Physiology Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Landino LM, Shuckrow ZT, Mooney AS, Lauderback CO, Lorenzi KE. Photo-oxidation and Photoreduction of Catechols by Chlorophyll Metabolites and Methylene Blue. Chem Res Toxicol 2022; 35:1851-1862. [PMID: 36044382 DOI: 10.1021/acs.chemrestox.2c00142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
While plant-derived oxidants can protect cells from oxidative damage, limited research has examined the role of dietary chlorophyll. Photoreduction of ubiquinone by chlorophyll metabolites and red light has been reported in vitro and in animal models. Herein we examined photo-oxidation and photoreduction reactions of catechols, dopamine and hydrocaffeic acid. Photo-oxidation of dopamine by methylene blue and the chlorophyll metabolites pheophorbide A, chlorin e6 and sodium copper chlorophyllin was studied by monitoring aminochrome, the cyclized product of the dopamine o-quinone with its amine. Singlet oxygen scavengers including sodium azide, ascorbate and glutathione decreased aminochrome formation by methylene blue and pheophorbide A. Addition of EDTA, a tertiary amine electron donor, to the reaction of dopamine, photosensitizer and red light decreased aminochrome formation. Photoreduction of the dopamine o-quinone produced by mushroom tyrosinase was achieved by both methylene blue and pheophorbide A only when an electron donor was included. Due to limited solubility, photo-oxidation and photoreduction reactions by pheophorbide A required 5-7.5% dimethylformamide for optimal reactivity. Catalytic photoreduction of 2,3-dimethoxy-5-methyl-p-benzoquinone by methylene blue or pheophorbide A and tertiary amine electron donors was observed. Among the chlorophyll metabolites, pheophorbide A was more effective than chlorin e6 or sodium copper chlorophyllin in photo-oxidation of dopamine and photoreduction reactions. Singlet oxygen inhibited lactate dehydrogenase A activity, and higher molecular weight protein cross-links were observed on SDS-PAGE. Hydrocaffeic acid competed with lactate dehydrogenase A for reaction with singlet oxygen produced by methylene blue; however, no protection by hydrocaffeic acid (HCA) was observed when pheophorbide A was used. Cysteine modification of lactate dehydrogenase A by the o-quinone of hydrocaffeic acid was detected using a redox cycling stain. Inclusion of an electron donor decreased protein labeling.
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Affiliation(s)
- Lisa M Landino
- Department of Chemistry, William and Mary, P.O. Box 8795, Williamsburg, Virginia 23187-8795, United States
| | - Zachary T Shuckrow
- Department of Chemistry, William and Mary, P.O. Box 8795, Williamsburg, Virginia 23187-8795, United States
| | - Alexander S Mooney
- Department of Chemistry, William and Mary, P.O. Box 8795, Williamsburg, Virginia 23187-8795, United States
| | - Clare O Lauderback
- Department of Chemistry, William and Mary, P.O. Box 8795, Williamsburg, Virginia 23187-8795, United States
| | - Kristen E Lorenzi
- Department of Chemistry, William and Mary, P.O. Box 8795, Williamsburg, Virginia 23187-8795, United States
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Johnstone DM, Hamilton C, Gordon LC, Moro C, Torres N, Nicklason F, Stone J, Benabid AL, Mitrofanis J. Exploring the Use of Intracranial and Extracranial (Remote) Photobiomodulation Devices in Parkinson's Disease: A Comparison of Direct and Indirect Systemic Stimulations. J Alzheimers Dis 2021; 83:1399-1413. [PMID: 33843683 DOI: 10.3233/jad-210052] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In recent times, photobiomodulation has been shown to be beneficial in animal models of Parkinson's disease, improving locomotive behavior and being neuroprotective. Early observations in people with Parkinson's disease have been positive also, with improvements in the non-motor symptoms of the disease being evident most consistently. Although the precise mechanisms behind these improvements are not clear, two have been proposed: direct stimulation, where light reaches and acts directly on the distressed neurons, and remote stimulation, where light influences cells and/or molecules that provide systemic protection, thereby acting indirectly on distressed neurons. In relation to Parkinson's disease, given that the major zone of pathology lies deep in the brain and that light from an extracranial or external photobiomodulation device would not reach these vulnerable regions, stimulating the distressed neurons directly would require intracranial delivery of light using a device implanted close to the vulnerable regions. For indirect systemic stimulation, photobiomodulation could be applied to either the head and scalp, using a transcranial helmet, or to a more remote body part (e.g., abdomen, leg). In this review, we discuss the evidence for both the direct and indirect neuroprotective effects of photobiomodulation in Parkinson's disease and propose that both types of treatment modality, when working together using both intracranial and extracranial devices, provide the best therapeutic option.
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Affiliation(s)
| | | | - Luke C Gordon
- Department of Physiology, University of Sydney, Australia
| | - Cecile Moro
- University Grenoble Alpes, CEA, LETI, CLINATEC, MINATEC Campus, Grenoble, France
| | - Napoleon Torres
- University Grenoble Alpes, CEA, LETI, CLINATEC, MINATEC Campus, Grenoble, France
| | - Frank Nicklason
- Department of Anatomy, University of Sydney, Australia.,Geriatric Medicine, Royal Hobart Hospital, Hobart, Australia
| | - Jonathan Stone
- Department of Physiology, University of Sydney, Australia
| | - Alim-Louis Benabid
- University Grenoble Alpes, CEA, LETI, CLINATEC, MINATEC Campus, Grenoble, France
| | - John Mitrofanis
- Department of Anatomy, University of Sydney, Australia.,University Grenoble Alpes, CEA, LETI, CLINATEC, MINATEC Campus, Grenoble, France
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Fernandes AS, Nascimento TC, Pinheiro PN, de Rosso VV, de Menezes CR, Jacob-Lopes E, Zepka LQ. Insights on the intestinal absorption of chlorophyll series from microalgae. Food Res Int 2020; 140:110031. [PMID: 33648259 DOI: 10.1016/j.foodres.2020.110031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/10/2020] [Accepted: 12/13/2020] [Indexed: 12/22/2022]
Abstract
The bioaccessibility and subsequent uptake by Caco-2 human intestinal cells of chlorophyll pigments from Scenedesmus obliquus were determined for the first time. In order to evaluate the impact of different types of the matrix on bioaccessibility of chlorophyll from microalgae, three different products were evaluated: isolated chlorophyll extract (ICE); wet ultrasonicated biomass (WUB); and whole dried biomass (WDB). The samples were submitted to in vitro digestion model according to the INFOGEST protocol, and Caco-2 cells determined the intestinal uptake. Chlorophyll pigments were determined by HPLC-PDA-MS/MS. A total of ten chlorophyll pigments (8,318.48 µg g-1) were separated in S. obliquus biomass, with chlorophyll a (3,507.76 µg g-1) and pheophytin a' (1,598.09 µg g-1) the major ones. After in vitro digestion, all tested products showed bioaccessible chlorophylls. However, the total bioaccessibility results were as follows: ICE (33.45%), WUB (2.65%), WDB (0.33%). Five compounds were bioaccessible in ICE, three in WUB, and one in WDB. The hydroxypheophytin a showed the highest bioaccessibility (212%) in ICE, while pheophytin a' in WUB (11%) and WDB (2%). As a result, bioavailability estimates of ICE using the Caco-2 cell showed hydroxypheophytin a (102.53%), followed by pheophytin a' (64.69%) as the chlorophyll pigments most abundant in intestinal cells. In summary, from a nutritional perspective, these three types of the matrix (WDB, WUB, and ICE) influence the promotion of chlorophyll bioaccessibility. In this way, the data suggest that chlorophylls bioaccessibility from ICE is greater than that in WDB and WUB. Therefore, ICE should be considered a product that provides bioavailable chlorophyll and could be the best choice, such as ingredients in the development of functional foods chlorophyll-based.
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Affiliation(s)
- Andrêssa S Fernandes
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Tatiele C Nascimento
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Pricila N Pinheiro
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Veridiana V de Rosso
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Rua Silva Jardim 136, Santos 11015-020, Brazil
| | - Cristiano R de Menezes
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Eduardo Jacob-Lopes
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Leila Q Zepka
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil.
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Mast MH. Claims of anomalously long fasting: An assessment of the evidence from investigated cases. Explore (NY) 2020; 16:287-296. [PMID: 32739103 DOI: 10.1016/j.explore.2020.05.015] [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: 05/30/2019] [Revised: 05/16/2020] [Accepted: 05/24/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Throughout history and to the present day, there have been reports of people claiming inedia, i.e., an anomalous long-term abstinence from food or from food and fluid. Some were isolated and monitored and their abstinences confirmed. This raises the question of whether there may be an anomaly with wide implications that science has overlooked. On the other hand, there have been cases of exposed fraud. The reports on the studies are scattered and it can be difficult to judge their rigor and the strength and implications of their evidence. A critical evaluation seems useful. OBJECTIVES The objectives were to obtain an overview of investigated cases of claimed inedia, to assess the anomaly of the claims and study results, to assess the quality of the studies, and to identify deception methods to inform future safeguards. METHOD I developed criteria for differentiating normal from anomalous nutrition and fasting and for assessing the quality of inedia studies. Studies found through a systematic search were then assessed and the features of cases of fraud extracted. RESULTS 47 eligible investigations of 38 claimants were found. Out of the 38 cases, results were assessed as (seemingly) anomalous in 11, with nine cases of monitored food and fluid deprivation ranging from 14 to 68 days (median 28 days), and two cases of food deprivation for 365 and 411 days. In 17 cases, anomaly was assessed as not confirmed due to issues with study design or reporting. Fraud was established in 10 cases. Deception methods were creative. Post-1900 studies were also assessed for quality. Quality was not considered adequate in any. CONCLUSIONS I consider the evidential status of inedia unconfirmed as no assessed study had both anomalous findings and impeccable quality. However, quality was often downgraded due to reporting issues and it cannot be concluded in reverse that all claimants with anomalous results were able to deceive the investigators. The results of many studies are curious and demand further research. The conducted analysis provides guidance for improving rigor and transparency in future studies.
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Solway J, McBride M, Haq F, Abdul W, Miller R. Diet and Dermatology: The Role of a Whole-food, Plant-based Diet in Preventing and Reversing Skin Aging-A Review. THE JOURNAL OF CLINICAL AND AESTHETIC DERMATOLOGY 2020; 13:38-43. [PMID: 32802255 PMCID: PMC7380694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
BACKGROUND: Previous studies have demonstrated that a whole-food, plant-based (WFPB) diet can aid in the prevention, and in some cases reversal, of some of the leading chronic diseases in the United States. The medical literature on the relationship between diet and disease is steadily growing. Over the last decade, the possible connection between diet and many dermatological conditions has been studied, including skin aging. OBJECTIVE: As patients are increasingly seeking dietary advice from their dermatologist related to preventing and reversing the aging of skin, dermatologists need an evidence-based approach to tackle this challenging topic. This review focuses on dietary factors that contribute to telomere length, a marker for cellular aging. Although various factors contribute to accelerating telomere shortening, this review focuses on dietary factors that contribute to telomere length, specifically gerontotoxins and antioxidants. These can be measured in the blood, making them biomarkers of accelerated cellular skin aging. Included in this discussion is an evidence-based approach to increase the amount of antioxidants and decrease the amount of gerontotoxins in the diet, resulting in healthier skin. METHODS: A comprehensive MEDLINE (PubMed) literature review search was performed. Keywords used included: WFPB, telomerase, coronary artery disease, cellular aging, cigarette smoke, photoaging, telomeres, antioxidants, gerontotoxins, intrinsic cutaneous aging, extrinsic cutaneous aging, advanced glycation end products (AGEs), vitamin E, vitamin C, vitamin E, CoQ10, polyphenols, chlorophyll, zeaxanthin, polyunsaturated fatty acids, eicosapentaenoic acid, docosahexaenoic acid, alpha-linolenic acid, and monounsaturated fatty acids. Inclusion criteria included the above stated keywords and access to full text. RESULTS: A WFPB diet maximizes the antioxidant potential within our cells by providing essential vitamins, including vitamins A, C, and E. It also helps to eliminate harmful carcinogens and gerontotoxins within our bloodstream and has been shown to lengthen telomeres, which prevents cellular damage. CONCLUSION: Evidence obtained within this literature review supports a WFPB diet for preventing skin aging. .
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Affiliation(s)
- Jason Solway
- Drs. Solway, Haq, Abdul, and Miller are with Largo Medical Center in Largo, Florida
- Dr. McBride is with Riverside Methodist Hospital in Columbus, Ohio
| | - Michael McBride
- Drs. Solway, Haq, Abdul, and Miller are with Largo Medical Center in Largo, Florida
- Dr. McBride is with Riverside Methodist Hospital in Columbus, Ohio
| | - Furqan Haq
- Drs. Solway, Haq, Abdul, and Miller are with Largo Medical Center in Largo, Florida
- Dr. McBride is with Riverside Methodist Hospital in Columbus, Ohio
| | - Waheed Abdul
- Drs. Solway, Haq, Abdul, and Miller are with Largo Medical Center in Largo, Florida
- Dr. McBride is with Riverside Methodist Hospital in Columbus, Ohio
| | - Richard Miller
- Drs. Solway, Haq, Abdul, and Miller are with Largo Medical Center in Largo, Florida
- Dr. McBride is with Riverside Methodist Hospital in Columbus, Ohio
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Foo ASC, Soong TW, Yeo TT, Lim KL. Mitochondrial Dysfunction and Parkinson's Disease-Near-Infrared Photobiomodulation as a Potential Therapeutic Strategy. Front Aging Neurosci 2020; 12:89. [PMID: 32308618 PMCID: PMC7145956 DOI: 10.3389/fnagi.2020.00089] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/17/2020] [Indexed: 12/21/2022] Open
Abstract
As the main driver of energy production in eukaryotes, mitochondria are invariably implicated in disorders of cellular bioenergetics. Given that dopaminergic neurons affected in Parkinson's disease (PD) are particularly susceptible to energy fluctuations by their high basal energy demand, it is not surprising to note that mitochondrial dysfunction has emerged as a compelling candidate underlying PD. A recent approach towards forestalling dopaminergic neurodegeneration in PD involves near-infrared (NIR) photobiomodulation (PBM), which is thought to enhance mitochondrial function of stimulated cells through augmenting the activity of cytochrome C oxidase. Notwithstanding this, our understanding of the neuroprotective mechanism of PBM remains far from complete. For example, studies focusing on the effects of PBM on gene transcription are limited, and the mechanism through which PBM exerts its effects on distant sites (i.e., its "abscopal effect") remains unclear. Also, the clinical application of NIR in PD proves to be challenging. Efficacious delivery of NIR light to the substantia nigra pars compacta (SNpc), the primary site of disease pathology in PD, is fraught with technical challenges. Concerted efforts focused on understanding the biological effects of PBM and improving the efficiency of intracranial NIR delivery are therefore essential for its successful clinical translation. Nonetheless, PBM represents a potential novel therapy for PD. In this review, we provide an update on the role of mitochondrial dysfunction in PD and how PBM may help mitigate the neurodegenerative process. We also discussed clinical translation aspects of this treatment modality using intracranially implanted NIR delivery devices.
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Affiliation(s)
- Aaron Song Chuan Foo
- Department of Physiology, National University of Singapore, Singapore, Singapore
- Division of Neurosurgery, Department of Surgery, University Surgical Cluster, National University Hospital, Singapore, Singapore
| | - Tuck Wah Soong
- Department of Physiology, National University of Singapore, Singapore, Singapore
| | - Tseng Tsai Yeo
- Division of Neurosurgery, Department of Surgery, University Surgical Cluster, National University Hospital, Singapore, Singapore
| | - Kah-Leong Lim
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
- Department of Research, National Neuroscience Institute, Singapore, Singapore
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Mitrofanis J, Henderson LA. How and why does photobiomodulation change brain activity? Neural Regen Res 2020; 15:2243-2244. [PMID: 32594038 PMCID: PMC7749488 DOI: 10.4103/1673-5374.284989] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- John Mitrofanis
- Department of Anatomy, School of Medical Sciences, University of Sydney, Sydney, Australia
| | - Luke A Henderson
- Department of Anatomy, School of Medical Sciences, University of Sydney, Sydney, Australia
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Viera I, Chen K, Ríos JJ, Benito I, Pérez-Gálvez A, Roca M. First-Pass Metabolism of Chlorophylls in Mice. Mol Nutr Food Res 2018; 62:e1800562. [DOI: 10.1002/mnfr.201800562] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/06/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Isabel Viera
- Food Phytochemistry Department; Instituto de la Grasa (CSIC),; 41013 Sevilla Spain
| | - Kewei Chen
- College of Food Science; Southwest University; Chongqing 400715 China
| | - José J. Ríos
- Laboratory of Mass Spectrometry; Instituto de la Grasa (CSIC); 41013 Sevilla Spain
| | - Itziar Benito
- Laboratory Animal Services; University Hospital Virgen Macarena (HUVM); E-41009 Sevilla Spain
| | - Antonio Pérez-Gálvez
- Food Phytochemistry Department; Instituto de la Grasa (CSIC),; 41013 Sevilla Spain
| | - María Roca
- Food Phytochemistry Department; Instituto de la Grasa (CSIC),; 41013 Sevilla Spain
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Chaudhari SN, Kipreos ET. The Energy Maintenance Theory of Aging: Maintaining Energy Metabolism to Allow Longevity. Bioessays 2018; 40:e1800005. [PMID: 29901833 PMCID: PMC6314662 DOI: 10.1002/bies.201800005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 04/28/2018] [Indexed: 12/17/2022]
Abstract
Fused, elongated mitochondria are more efficient in generating ATP than fragmented mitochondria. In diverse C. elegans longevity pathways, increased levels of fused mitochondria are associated with lifespan extension. Blocking mitochondrial fusion in these animals abolishes their extended longevity. The long-lived C. elegans vhl-1 mutant is an exception that does not have increased fused mitochondria, and is not dependent on fusion for longevity. Loss of mammalian VHL upregulates alternate energy generating pathways. This suggests that mitochondrial fusion facilitates longevity in C. elegans by increasing energy metabolism. In diverse animals, ATP levels broadly decreases with age. Substantial evidence supports the theory that increasing or maintaining energy metabolism promotes the survival of older animals. Increased ATP levels in older animals allow energy-intensive repair and homeostatic mechanisms such as proteostasis that act to prevent cellular aging. These observations support the emerging paradigm that maintaining energy metabolism promotes the survival of older animals.
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Affiliation(s)
- Snehal N. Chaudhari
- Department of Cellular Biology University of Georgia Athens, GA 30602
- Present address: Department of Biological Chemistry and Molecular Pharmacology Harvard Medical School Boston, MA 02115
| | - Edward T. Kipreos
- Department of Cellular Biology University of Georgia Athens, GA 30602
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12
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Zhang D, Robinson K, Mihai DM, Washington I. Sequestration of ubiquitous dietary derived pigments enables mitochondrial light sensing. Sci Rep 2016; 6:34320. [PMID: 27731322 PMCID: PMC5059631 DOI: 10.1038/srep34320] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 09/09/2016] [Indexed: 12/17/2022] Open
Abstract
Animals alter their physiological states in response to their environment. We show that the introduction of a chlorophyll metabolite, a light-absorbing pigment widely consumed in human diets, to Caenorhabditis elegans results in animals whose fat mass can be modulated by exposure to light, despite the worm consuming the same amount of food. In the presence of the chlorophyll metabolite, exposing the worms to light increased adenosine triphosphate, reduced oxidative damage, and increased median life spans, without an effect on animal reproduction. Mice fed a dietary metabolite of chlorophyll and exposed to light, over several months, showed reductions in systemic inflammation as measured by plasma α-macroglobulin. We propose that dietary chlorophyll metabolites can enable mitochondria to use light as an environmental cue, by absorbing light and transferring the energy to mitochondrial coenzyme Q.
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Affiliation(s)
- Dan Zhang
- Columbia University Medical Center, Ophthalmology, New York, NY 10032, USA
| | - Kiera Robinson
- Columbia University Medical Center, Ophthalmology, New York, NY 10032, USA
| | - Doina M Mihai
- Columbia University Medical Center, Ophthalmology, New York, NY 10032, USA
| | - Ilyas Washington
- Columbia University Medical Center, Ophthalmology, New York, NY 10032, USA
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13
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Multiple Integrated Complementary Healing Approaches: Energetics & Light for bone. Med Hypotheses 2016; 86:18-29. [DOI: 10.1016/j.mehy.2015.10.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 10/30/2015] [Indexed: 02/08/2023]
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