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dos Santos VAB, Pedrazini MC. L-lysine as an Alternative Treatment for Pityriasis Rosea (PR) [Letter]. Clin Cosmet Investig Dermatol 2024; 17:433-434. [PMID: 38371327 PMCID: PMC10874121 DOI: 10.2147/ccid.s461722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Accepted: 02/08/2024] [Indexed: 02/20/2024]
Affiliation(s)
- Victor Augusto Benedicto dos Santos
- Department of Biosciences, Faculdade de Odontologia de Piracicaba (FOP), Universidade Estadual de Campinas (UNICAMP), Piracicaba, São Paulo State, Brazil
| | - Maria Cristina Pedrazini
- Department of Biosciences, Faculdade de Odontologia de Piracicaba (FOP), Universidade Estadual de Campinas (UNICAMP), Piracicaba, São Paulo State, Brazil
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Guo Y, Wei W, Wang H, Li Q, Wei C, Zhang J, Jin P. Effect of a New Hyaluronic Acid Hydrogel Dermal Filler Cross-Linked With Lysine Amino Acid for Skin Augmentation and Rejuvenation. Aesthet Surg J 2023; 44:NP87-NP97. [PMID: 37265096 DOI: 10.1093/asj/sjad169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/24/2023] [Accepted: 06/01/2023] [Indexed: 06/03/2023] Open
Abstract
BACKGROUND Hyaluronic acid (HA) fillers are the most popular filler agents for skin rejuvenation. Although 1,4-butanediol diglycidyl ether is regarded as a relatively safe cross-linker, it still exhibits certain cytotoxicity. OBJECTIVES We presented here an amino acid-cross-linked HA (ACHA) which was obtained by an amidation reaction with lysine and HA. This study aimed to investigate ACHA's efficacy and safety for skin augmentation and rejuvenation. METHODS Rheology, compressive tests, and swelling experiments were conducted to investigate ACHA's mechanical and viscoelastic properties. The effects of ACHA on the human keratinocytes (HaCaT) cells and the human dermal fibroblast (HDF) were investigated by Transwell and wound healing assays. Its impacts on the epithelial thickness and collagen synthesis were further examined in a mouse experimental model. We recruited 50 patients with moderate to severe nasolabial folds (NLFs). The patients were randomly allocated to receive ACHA or Restylane injections. The resulting retention rates of HA and the Wrinkle Severity Rating Scale and Global Aesthetic Improvement Scale outcomes were evaluated and compared. RESULTS ACHA exhibited good viscoelasticity. It not only promoted migration and proliferation of HaCat and HDF and secretion of various growth factors but also increased skin thickness and promoted the generation of collagen. Patients who received ACHA had more residual volume 12 months after treatment. ACHA exhibited a promising augmentation effect in NLF correction with few adverse reactions. CONCLUSIONS ACHA has shown promise as a biomaterial with excellent biocompatibility and viscoelastic characteristics in both research and the clinic.See the abstract translated into Hindi, Portuguese, Korean, German, Italian, Arabic, Chinese, and Taiwanese online here: https://doi.org/10.1093/asj/sjad169. LEVEL OF EVIDENCE: 2
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Sindhu R, Supreeth M, Prasad SK, Thanmaya M. Shuttle between arginine and lysine: influence on cancer immunonutrition. Amino Acids 2023; 55:1461-1473. [PMID: 37728630 DOI: 10.1007/s00726-023-03327-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 08/29/2023] [Indexed: 09/21/2023]
Abstract
Amino acids which are essential nutrients for all cell types' survival are also recognised to serve as opportunistic/alternative fuels in cancers auxotrophic for specific amino acids. Accordingly, restriction of amino acids has been utilised as a therapeutic strategy in these cancers. Contrastingly, amino acid deficiencies in cancer are found to greatly impair immune functions, increasing mortality and morbidity rates. Dietary and supplemental amino acids in such conditions have revealed their importance as 'immunonutrients' by modulating cellular homeostasis processes and halting malignant progression. L-arginine specifically has attracted interest as an immunonutrient by acting as a nodal regulator of immune responses linked to carcinogenesis processes through its versatile signalling molecule, nitric oxide (NO). The quantum of NO generated directly influences the cytotoxic and cytostatic processes of cell cycle arrest, apoptosis, and senescence. However, L-lysine, a CAT transporter competitor for arginine effectively limits arginine input at high L-lysine concentrations by limiting arginine-mediated effects. The phenomenon of arginine-lysine antagonism can, therefore, be hypothesised to influence the immunonutritional effects exerted by arginine. The review highlights aspects of lysine's interference with arginine-mediated NO generation and its consequences on immunonutritional and anti-cancer effects, and discusses possible alternatives to manage the condition. However, further research that considers monitoring lysine levels in arginine immunonutritional therapy is essential to conclude the hypothesis.
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Affiliation(s)
- R Sindhu
- Department of Microbiology, JSS-Academy of Higher Education and Research, Mysuru, 570015, Karnataka, India.
| | - M Supreeth
- Department of Microbiology, JSS-Academy of Higher Education and Research, Mysuru, 570015, Karnataka, India
| | - Shashanka K Prasad
- Department of Biotechnology and Bioinformatics, JSS-Academy of Higher Education and Research, Mysuru, 570015, Karnataka, India
| | - M Thanmaya
- Department of Microbiology, JSS-Academy of Higher Education and Research, Mysuru, 570015, Karnataka, India
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Schlegel I, De Goüyon Matignon de Pontourade CMF, Lincke JB, Keller I, Zinkernagel MS, Zysset-Burri DC. The Human Ocular Surface Microbiome and Its Associations with the Tear Proteome in Dry Eye Disease. Int J Mol Sci 2023; 24:14091. [PMID: 37762390 PMCID: PMC10531978 DOI: 10.3390/ijms241814091] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/08/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Although dry eye disease (DED) is one of the most common ocular surface diseases worldwide, its pathogenesis is incompletely understood, and treatment options are limited. There is growing evidence that complex interactions between the ocular surface microbiome (OSM) and tear fluid constituents, potentially leading to inflammatory processes, are associated with ocular surface diseases such as DED. In this study, we aimed to find unique compositional and functional features of the OSM associated with human and microbial tear proteins in patients with DED. Applying whole-metagenome shotgun sequencing of forty lid and conjunctival swabs, we identified 229 taxa, with Actinobacteria and Proteobacteria being the most abundant phyla and Propionibacterium acnes the dominating species in the cohort. When DED patients were compared to controls, the species Corynebacterium tuberculostearicum was more abundant in conjunctival samples, whereas the family Propionibacteriaceae was more abundant in lid samples. Functional analysis showed that genes of L-lysine biosynthesis, tetrapyrrole biosynthesis, 5-aminoimidazole ribonucleotide biosynthesis, and the super pathway of L-threonine biosynthesis were enriched in conjunctival samples of controls. The relative abundances of Acinetobacter johnsonii correlated with seven human tear proteins, including mucin-16. The three most abundant microbial tear proteins were the chaperone protein DnaK, the arsenical resistance protein ArsH, and helicase. Compositional and functional features of the OSM and the tear proteome are altered in patients with DED. Ultimately, this may help to design novel interventional therapeutics to target DED.
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Affiliation(s)
- Irina Schlegel
- Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (I.S.); (C.M.F.D.G.M.d.P.); (J.-B.L.); (M.S.Z.)
| | | | - Joel-Benjamin Lincke
- Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (I.S.); (C.M.F.D.G.M.d.P.); (J.-B.L.); (M.S.Z.)
| | - Irene Keller
- Department for BioMedical Research, University of Bern, 3010 Bern, Switzerland;
- Interfaculty Bioinformatics Unit and Swiss Institute of Bioinformatics, University of Bern, 3012 Bern, Switzerland
| | - Martin S. Zinkernagel
- Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (I.S.); (C.M.F.D.G.M.d.P.); (J.-B.L.); (M.S.Z.)
- Department for BioMedical Research, University of Bern, 3010 Bern, Switzerland;
| | - Denise C. Zysset-Burri
- Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland; (I.S.); (C.M.F.D.G.M.d.P.); (J.-B.L.); (M.S.Z.)
- Department for BioMedical Research, University of Bern, 3010 Bern, Switzerland;
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Xiong B, Li Q, Yao J, Zheng W, Ou Y, He Y, Liao L, Wang X, Deng H, Zhang M, Sun G, He S, He J, Zhang X, Wang Z. Transcriptome and UPLC-MS/MS reveal mechanisms of amino acid biosynthesis in sweet orange 'Newhall' after different rootstocks grafting. FRONTIERS IN PLANT SCIENCE 2023; 14:1216826. [PMID: 37496860 PMCID: PMC10366444 DOI: 10.3389/fpls.2023.1216826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 06/22/2023] [Indexed: 07/28/2023]
Abstract
Sweet orange 'Newhall' (C. sinensis) is a popular fruit in high demand all over the world. Its peel and pulp are rich in a variety of nutrients and are widely used in catering, medicine, food and other industries. Grafting is commonly practiced in citrus production. Different rootstock types directly affect the fruit quality and nutritional flavor of citrus. However, the studies on citrus metabolites by grafting with different rootstocks are very limited, especially for amino acids (AAs). The preliminary test showed that there were significant differences in total amino acid content of two rootstocks (Poncirus trifoliata (CT) and C. junos Siebold ex Tanaka (CJ)) after grafting, and total amino acid content in the peel was higher than flesh. However, the molecular mechanism affecting amino acid differential accumulation remains unclear. Therefore, this study selected peel as the experimental material to reveal the amino acid components and differential accumulation mechanism of sweet orange 'Newhall' grafted with different rootstocks through combined transcriptome and metabolome analysis. Metabolome analysis identified 110 amino acids (AAs) and their derivatives in sweet orange 'Newhall' peels, with L-valine being the most abundant. L-asparagine was observed to be affected by both developmental periods and rootstock grafting. Weighted gene co-expression network analysis (WGCNA) combined with Redundancy Analysis (RDA) revealed eight hub structural genes and 41 transcription factors (TFs) that significantly influenced amino acid biosynthesis in sweet orange 'Newhall' peels. Our findings further highlight the significance of rootstock selection in enhancing the nutritional value of citrus fruits and might contribute to the development of functional citrus foods and nutritional amino acid supplements.
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Affiliation(s)
- Bo Xiong
- *Correspondence: Bo Xiong, ; Zhihui Wang,
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Chang JY, Balch C, Puccio J, Oh HS. A Narrative Review of Alternative Symptomatic Treatments for Herpes Simplex Virus. Viruses 2023; 15:1314. [PMID: 37376614 DOI: 10.3390/v15061314] [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: 04/26/2023] [Revised: 05/26/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Herpes simplex virus-1 (HSV-1) and -2 (HSV-2) are large, spherically shaped, double-stranded DNA viruses that coevolved with Homo sapiens for over 300,000 years, having developed numerous immunoevasive mechanisms to survive the lifetime of their human host. Although in the continued absence of an acceptable prophylactic and therapeutic vaccine, approved pharmacologics (e.g., nucleoside analogs) hold benefit against viral outbreaks, while resistance and toxicity limit their universal application. Against these shortcomings, there is a long history of proven and unproven home remedies. With the breadth of purported alternative therapies, patients are exposed to risk of harm without proper information. Here, we examined the shortcomings of the current gold standard HSV therapy, acyclovir, and described several natural products that demonstrated promise in controlling HSV infection, including lemon balm, lysine, propolis, vitamin E, and zinc, while arginine, cannabis, and many other recreational drugs are detrimental. Based on this literature, we offered recommendations regarding the use of such natural products and their further investigation.
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Affiliation(s)
- Jane Y Chang
- Ascendant Biotech Inc., Foster City, CA 94404, USA
| | - Curt Balch
- Bioscience Advising, Ann Arbor, MI 48103, USA
| | - Joseph Puccio
- Department of Pediatrics, University of South Florida, Tampa, FL 33602, USA
| | - Hyung S Oh
- Department of Microbiology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA
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Pérez de la Lastra JM, Curieses Andrés CM, Andrés Juan C, Plou FJ, Pérez-Lebeña E. Hydroxytyrosol and Arginine as Antioxidant, Anti-Inflammatory and Immunostimulant Dietary Supplements for COVID-19 and Long COVID. Foods 2023; 12:foods12101937. [PMID: 37238755 DOI: 10.3390/foods12101937] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/07/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
Phytochemicals from plant extracts are becoming increasingly popular in the world of food science and technology because they have positive effects on human health. In particular, several bioactive foods and dietary supplements are being investigated as potential treatments for chronic COVID. Hydroxytyrosol (HXT) is a natural antioxidant, found in olive oil, with antioxidant anti-inflammatory properties that has been consumed by humans for centuries without reported adverse effects. Its use was approved by the European Food Safety Authority as a protective agent for the cardiovascular system. Similarly, arginine is a natural amino acid with anti-inflammatory properties that can modulate the activity of immune cells, reducing the production of pro-inflammatory cytokines such as IL-6 and TNF-α. The properties of both substances may be particularly beneficial in the context of COVID-19 and long COVID, which are characterised by inflammation and oxidative stress. While l-arginine promotes the formation of •NO, HXT prevents oxidative stress and inflammation in infected cells. This combination could prevent the formation of harmful peroxynitrite, a potent pro-inflammatory substance implicated in pneumonia and COVID-19-associated organ dysfunction, as well as reduce inflammation, improve immune function, protect against free radical damage and prevent blood vessel injury. Further research is needed to fully understand the potential benefits of HXT and arginine in the context of COVID-19.
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Affiliation(s)
- José Manuel Pérez de la Lastra
- Institute of Natural Products and Agrobiology, CSIC-Spanish Research Council, Avda. Astrofísico Fco. Sánchez, 3, 38206 San Cristóbal de la Laguna, Spain
| | | | - Celia Andrés Juan
- Cinquima Institute and Department of Organic Chemistry, Faculty of Sciences, Valladolid University, Paseo de Belén, 7, 47011 Valladolid, Spain
| | - Francisco J Plou
- Institute of Catalysis and Petrochemistry, CSIC-Spanish Research Council, 28049 Madrid, Spain
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Starikova EA, Rubinstein AA, Mammedova JT, Isakov DV, Kudryavtsev IV. Regulated Arginine Metabolism in Immunopathogenesis of a Wide Range of Diseases: Is There a Way to Pass between Scylla and Charybdis? Curr Issues Mol Biol 2023; 45:3525-3551. [PMID: 37185755 PMCID: PMC10137093 DOI: 10.3390/cimb45040231] [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: 03/29/2023] [Revised: 04/12/2023] [Accepted: 04/14/2023] [Indexed: 05/17/2023] Open
Abstract
More than a century has passed since arginine was discovered, but the metabolism of the amino acid never ceases to amaze researchers. Being a conditionally essential amino acid, arginine performs many important homeostatic functions in the body; it is involved in the regulation of the cardiovascular system and regeneration processes. In recent years, more and more facts have been accumulating that demonstrate a close relationship between arginine metabolic pathways and immune responses. This opens new opportunities for the development of original ways to treat diseases associated with suppressed or increased activity of the immune system. In this review, we analyze the literature describing the role of arginine metabolism in the immunopathogenesis of a wide range of diseases, and discuss arginine-dependent processes as a possible target for therapeutic approaches.
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Affiliation(s)
- Eleonora A Starikova
- Laboratory of Cellular Immunology, Department of Immunology, Institute of Experimental Medicine, Akademika Pavlova 12, 197376 Saint Petersburg, Russia
- Medical Faculty, First Saint Petersburg State I. Pavlov Medical University, L'va Tolstogo St. 6-8, 197022 Saint Petersburg, Russia
| | - Artem A Rubinstein
- Laboratory of Cellular Immunology, Department of Immunology, Institute of Experimental Medicine, Akademika Pavlova 12, 197376 Saint Petersburg, Russia
| | - Jennet T Mammedova
- Laboratory of General Immunology, Department of Immunology, Institute of Experimental Medicine, Akademika Pavlova 12, 197376 Saint Petersburg, Russia
| | - Dmitry V Isakov
- Medical Faculty, First Saint Petersburg State I. Pavlov Medical University, L'va Tolstogo St. 6-8, 197022 Saint Petersburg, Russia
| | - Igor V Kudryavtsev
- Laboratory of Cellular Immunology, Department of Immunology, Institute of Experimental Medicine, Akademika Pavlova 12, 197376 Saint Petersburg, Russia
- School of Biomedicine, Far Eastern Federal University, FEFU Campus, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia
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