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He Z, Naganuma T. Chronicle of Research into Lichen-Associated Bacteria. Microorganisms 2022; 10:2111. [PMID: 36363703 PMCID: PMC9698887 DOI: 10.3390/microorganisms10112111] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/30/2022] [Accepted: 10/21/2022] [Indexed: 02/12/2024] Open
Abstract
Lichens are mutually symbiotic systems consisting of fungal and algal symbionts. While diverse lichen-forming fungal species are known, limited species of algae form lichens. Plasticity in the combination of fungal and algal species with different eco-physiological properties may contribute to the worldwide distribution of lichens, even in extreme habitats. Lichens have been studied systematically for more than 200 years; however, plasticity in fungal-algal/cyanobacterial symbiotic combinations is still unclear. In addition, the association between non-cyanobacterial bacteria and lichens has attracted attention in recent years. The types, diversity, and functions of lichen-associated bacteria have been studied using both culture-based and culture-independent methods. This review summarizes the history of systematic research on lichens and lichen-associated bacteria and provides insights into the current status of research in this field.
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Affiliation(s)
| | - Takeshi Naganuma
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima 739-8528, Japan
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González-Cela-Casamayor MA, López-Cano JJ, Bravo-Osuna I, Andrés-Guerrero V, Vicario-de-la-Torre M, Guzmán-Navarro M, Benítez-del-Castillo JM, Herrero-Vanrell R, Molina-Martínez IT. Novel Osmoprotective DOPC-DMPC Liposomes Loaded with Antihypertensive Drugs as Potential Strategy for Glaucoma Treatment. Pharmaceutics 2022; 14:pharmaceutics14071405. [PMID: 35890300 PMCID: PMC9317418 DOI: 10.3390/pharmaceutics14071405] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/27/2022] [Accepted: 06/30/2022] [Indexed: 02/05/2023] Open
Abstract
Glaucoma is a group of chronic irreversible neuropathies that affect the retina and the optic nerve. It is considered one of the leading causes of blindness in the world. Although it can be due to various causes, the most important modifiable risk factor is the elevated intraocular pressure (IOP). In this case, the treatment of choice consists of instilling antihypertensive formulations on the ocular surface. The chronicity of the pathology, together with the low bioavailability of the drugs that are applied on the ocular surface, make it necessary to instill the formulations very frequently, which is associated, in many cases, with the appearance of dry eye disease (DED). The objective of this work is the design of topical ocular formulations capable of treating glaucoma and, at the same time, preventing DED. For this, two liposome formulations, loaded with brimonidine or with travoprost, were Tadeveloped using synthetic phospholipids and enriched by the addition of compounds with osmoprotective activity. The proposed formulations not only presented physicochemical characteristics (size, pH, osmolarity, surface tension, and viscosity) and encapsulation efficiency values (EE% of 24.78% and ≥99.01% for brimonidine and travoprost, respectively) suitable for ocular surface administration, but also showed good tolerance in human corneal and conjunctival cell cultures, as well as an in vitro osmoprotective activity. The hypotensive effect of both liposomal formulations was evaluated in normotensive albino New Zealand rabbits, showing a faster and longer lasting reduction of intraocular pressure in comparison to the corresponding commercialized products used as control. According to these results, the hypotensive liposomal formulations combined with osmoprotective agents would result in a very promising platform for the treatment of glaucoma and the simultaneous protection of the ocular surface.
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Affiliation(s)
- Miriam Ana González-Cela-Casamayor
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain; (M.A.G.-C.-C.); (J.J.L.-C.); (I.B.-O.); (V.A.-G.); (M.V.-d.-l.-T.); (J.M.B.-d.-C.)
- Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), IdISSC, 28040 Madrid, Spain
| | - José Javier López-Cano
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain; (M.A.G.-C.-C.); (J.J.L.-C.); (I.B.-O.); (V.A.-G.); (M.V.-d.-l.-T.); (J.M.B.-d.-C.)
- Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), IdISSC, 28040 Madrid, Spain
| | - Irene Bravo-Osuna
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain; (M.A.G.-C.-C.); (J.J.L.-C.); (I.B.-O.); (V.A.-G.); (M.V.-d.-l.-T.); (J.M.B.-d.-C.)
- Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), IdISSC, 28040 Madrid, Spain
- University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Vanessa Andrés-Guerrero
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain; (M.A.G.-C.-C.); (J.J.L.-C.); (I.B.-O.); (V.A.-G.); (M.V.-d.-l.-T.); (J.M.B.-d.-C.)
- Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), IdISSC, 28040 Madrid, Spain
- University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Marta Vicario-de-la-Torre
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain; (M.A.G.-C.-C.); (J.J.L.-C.); (I.B.-O.); (V.A.-G.); (M.V.-d.-l.-T.); (J.M.B.-d.-C.)
- Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), IdISSC, 28040 Madrid, Spain
- University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Manuel Guzmán-Navarro
- Biomedical Sciences Department, Pharmacy and Pharmaceutical Technology Unit, Facultad de Farmacia, Universidad de Alcalá, 28801 Madrid, Spain;
| | - José Manuel Benítez-del-Castillo
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain; (M.A.G.-C.-C.); (J.J.L.-C.); (I.B.-O.); (V.A.-G.); (M.V.-d.-l.-T.); (J.M.B.-d.-C.)
- Ocular Surface and Inflammation Unit (USIO), Departamento de Inmunología, Oftalmología y OLR, Hospital Clínico San Carlos, Universidad Complutense de Madrid (UCM), IdISSC, 28040 Madrid, Spain
| | - Rocío Herrero-Vanrell
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain; (M.A.G.-C.-C.); (J.J.L.-C.); (I.B.-O.); (V.A.-G.); (M.V.-d.-l.-T.); (J.M.B.-d.-C.)
- Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), IdISSC, 28040 Madrid, Spain
- University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Correspondence: (R.H.-V.); (I.T.M.-M.)
| | - Irene Teresa Molina-Martínez
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), 28040 Madrid, Spain; (M.A.G.-C.-C.); (J.J.L.-C.); (I.B.-O.); (V.A.-G.); (M.V.-d.-l.-T.); (J.M.B.-d.-C.)
- Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM), IdISSC, 28040 Madrid, Spain
- University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Correspondence: (R.H.-V.); (I.T.M.-M.)
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González Cela Casamayor MA, López Cano JJ, Andrés Guerrero V, Herrero Vanrell R, Benítez Del Castillo JM, Molina Martínez IT. A novel osmoprotective liposomal formulation from synthetic phospholipids to reduce in vitro hyperosmolar stress in dry eye treatments. J Liposome Res 2022:1-12. [PMID: 35706400 DOI: 10.1080/08982104.2022.2087083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Dry eye disease (DED) is a worldwide, multifactorial disease mainly caused by a deficit in tear production or increased tear evaporation with an increase in tear osmolarity and inflammation. This causes discomfort and there is a therapeutic need to restore the homeostasis of the ocular surface. The aim of the present work was to develop a biodegradable and biocompatible liposomal formulation from the synthetic phospholipids 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) and 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) that is able to reduce the effects of hypertonic stress by helping to restore the lipid layer of the tear film. Liposomes were made using the lipid film hydration method with synthetic phospholipids (10 mg/mL) with and without 0.2% HPMC. They were characterised in terms of size, osmolarity, pH, surface tension, and viscosity. Additionally, the in vitro toxicity of the formulation at 1 and 4 h in human corneal epithelial cells (hTERT-HCECs) and human conjunctival cells (IM-HConEpiC) was determined. Furthermore, osmoprotective activity was tested in a corneal model of hyperosmolar stress. In vivo acute tolerance testing was also carried out in albino New Zealand rabbits by topical application of the ophthalmic formulations every 30 min for 6 h. All the assayed formulations showed suitable physicochemical characteristics for ocular surface administration. The liposomal formulations were well-tolerated in cell cultures and showed osmoprotective activity in a hyperosmolar model. No alterations or discomfort were reported when they were topically administered in rabbits. According to the results, the osmoprotective liposomal formulations developed in this work are promising candidates for the treatment of DED.
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Affiliation(s)
- Miriam Ana González Cela Casamayor
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain
| | - José Javier López Cano
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain
| | - Vanessa Andrés Guerrero
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain.,University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, Spain
| | - Rocío Herrero Vanrell
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain.,University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, Spain
| | - José Manuel Benítez Del Castillo
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Ocular Surface and Inflammation Unit (USIO), Departamento de Inmunología, Oftalmología y OLR, Hospital Clínico San Carlos, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain
| | - Irene Teresa Molina Martínez
- Innovation, Therapy and Pharmaceutical Development in Ophthalmology (InnOftal) Research Group, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Department of Pharmaceutics and Food Technology, Facultad de Farmacia, Universidad Complutense de Madrid (UCM); IdISSC, Madrid, Spain.,University Institute of Industrial Pharmacy (IUFI), Facultad de Farmacia, Universidad Complutense de Madrid, Spain
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