1
|
Carracedo G, Garcia-Gonzalo C, Perez-Luque MA, Martinez-Aguila A, Carpena-Torres C. Efficacy and safety of artificial tears containing Artemia salina extract with dinucleotides for dry eye. Clin Exp Optom 2024:1-7. [PMID: 38653499 DOI: 10.1080/08164622.2024.2341841] [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: 11/14/2023] [Accepted: 04/05/2024] [Indexed: 04/25/2024] Open
Abstract
CLINICAL RELEVANCE This clinical trial was conducted as part of the marketing procedures for a medical device comprising artificial tears containing Artemia salina extract with dinucleotides. These molecules previously demonstrated secretagogue properties by enhancing the production of aqueous, mucinous, and lipidic components of the tears. BACKGROUND After confirming the efficacy of artificial tears containing Artemia salina extract in an animal model, this study proceeded to evaluate their efficacy and safety on dry eye participants. METHODS A randomised controlled clinical trial was performed on 36 dry eye participants (41.6 ± 20.6 years). Half of the participants were treated with saline solution as a placebo for four weeks, while the other half were treated with artificial tears containing Artemia salina, randomly assigned. After a wash-out period of two weeks, the treatments were crossed for another four weeks. Participants were assessed at baseline and after one week, two weeks, and four weeks. Efficacy variables were: eye dryness frequency (primary), eye comfort, visual satisfaction, tear secretion, tear break-up time, corneal staining, conjunctival staining, and conjunctival hyperaemia. Safety variables were: high- and low-contrast visual acuity, intraocular pressure, and eye fundus images analysis. RESULTS Compared with the baseline, the saline solution showed no significant changes in any of the studied variables after four weeks of treatment (p ≥ 0.05). However, the topical instillation of the artificial tears with Artemia salina for four weeks significantly improved eye dryness frequency (p = 0.014) and corneal staining (p = 0.010). No systemic or ocular adverse events were reported during the clinical trial. CONCLUSION The topical instillation of artificial tears containing Artemia salina in mild to moderate dry eye participants for four weeks slightly improved their symptoms related to eye dryness frequency and reduced corneal damage, with no undesirable side effects observed.
Collapse
Affiliation(s)
- Gonzalo Carracedo
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| | - Cristina Garcia-Gonzalo
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| | - Maria A Perez-Luque
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| | - Alejandro Martinez-Aguila
- Ocupharm Research Group, Department of Biochemistry and Molecular Biology, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| | - Carlos Carpena-Torres
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, Madrid, Spain
| |
Collapse
|
2
|
de Sousa ALM, Rizaldo Pinheiro R, Furtado Araujo J, Mesquita Peixoto R, de Azevedo DAA, Cesar Lima AM, Marques Canuto K, Vasconcelos Ribeiro PR, de Queiroz Souza AS, Rocha Souza SC, de Amorim SL, Paula Amaral G, de Souza V, de Morais SM, Andrioli A, da Silva Teixeira MF. In vitro antiviral effect of ethanolic extracts from Azadirachta indica and Melia azedarach against goat lentivirus in colostrum and milk. Sci Rep 2023; 13:4677. [PMID: 36949145 PMCID: PMC10031174 DOI: 10.1038/s41598-023-31455-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 03/13/2023] [Indexed: 03/24/2023] Open
Abstract
This study aimed to evaluate, in vitro, the use of leaf extracts of Azadirachta indica (A. indica) and Melia azedarach (M. azedarach) as antivirals against caprine lentivirus (CLV) in colostrum and milk of goat nannies. These were collected from eight individuals and infected with the standard strain of CLV. Samples were then subdivided into aliquots and treated with 150 µg/mL of crude extract, and with ethyl acetate and methanol fractions for 30, 60, and 90 min. Next, somatic cells from colostrum and milk were co-cultured with cells from the ovine third eyelid. After this step, viral titers of the supernatants collected from treatments with greater efficacy in co-culture were assessed. The organic ethyl acetate fractions of both plants at 90 min possibly inhibited the viral activity of CLV by up to a thousandfold in colostrum. In milk, this inhibition was up to 800 times for the respective Meliaceae. In conclusion, the ethanolic fraction of ethyl acetate from both plants demonstrated efficacy against CLV in samples from colostrum and milk when subjected to treatment, which was more effective in colostrum.
Collapse
Affiliation(s)
- Ana Lidia Madeira de Sousa
- Laboratory of Virology (LABOVIR), State University of Ceará (UECE), Fortaleza, CE, Brazil.
- Faculdade Educar da Ibiapaba, Ípu, CE, Brazil.
| | | | | | - Renato Mesquita Peixoto
- Vale do Salgado University Center (UNIVS), Icó, CE, Brazil
- Terra Nordeste College (FATENE), Caucaia, CE, Brazil
| | | | - Ana Milena Cesar Lima
- Scholarship for Regional Scientific Development of the National Council for Scientific and Technological Development (DCR-CNPq/FUNCAP), Level C, Embrapa Goats and Sheep, Sobral, CE, Brazil
| | - Kirley Marques Canuto
- Multiuser Laboratory of Natural Products Chemistry, Embrapa Tropical Agroindustry, Fortaleza, CE, Brazil
| | | | | | | | - Sara Lucena de Amorim
- Department of Veterinary Medicine, Federal University of Rondônia, Rolim de Moura, RO, Brazil
| | | | - Viviane de Souza
- Laboratory of Microbiology, Embrapa Goats and Sheep, Sobral, CE, Brazil
| | - Selene Maia de Morais
- Laboratory of Chemistry and Natural Products (LQPN), Ceará State University, Fortaleza, CE, Brazil
| | - Alice Andrioli
- Laboratory of Virology, Embrapa Goats and Sheep, Sobral, CE, Brazil
| | | |
Collapse
|
3
|
Carpena-Torres C, Pintor J, Huete-Toral F, Martin-Gil A, Rodríguez-Pomar C, Martínez-Águila A, Carracedo G. Efficacy of Artificial Tears Based on an Extract of Artemia salina Containing Dinucleotides in a Rabbit Dry Eye Model. Int J Mol Sci 2021; 22:ijms222111999. [PMID: 34769429 PMCID: PMC8584318 DOI: 10.3390/ijms222111999] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 10/29/2021] [Accepted: 11/03/2021] [Indexed: 11/16/2022] Open
Abstract
(1) Background: Artemia salina is a brine shrimp containing high concentrations of dinucleotides, molecules with properties for dry eye treatment. For this reason, the purpose of the study was to evaluate the effect of the artificial tears based on an extract of Artemia salina in a rabbit dry eye model. (2) Methods: A prospective and randomized study was carried out. Twenty rabbits were divided into 4 groups (n = 5, each group): healthy rabbits, dry eye rabbits, dry eye rabbits treated with hypromellose (HPMC), and dry eye rabbits treated with Artemia salina. Dry eye was induced by the topical instillation of 0.2% benzalkonium chloride. The measurements were performed before and after the treatment for 5 consecutive days. (3) Results: The topical instillation of artificial tears containing Artemia salina showed beneficial effects on tear secretion, tear break-up time, corneal staining, the density of Goblet cells, heigh of mucin cloud secreted by these cells, and mRNA levels of IL-1β and MMP9 in conjunctival cells. Compared with the HPMC, there was a statistically significant improvement (p < 0.05) with the Artemia salina in all the variables under study, except for the conjunctival hyperemia, density of Goblet cells, and mRNA levels of IL-6. (4) Conclusions: The potential of artificial tears based on Artemia salina as a secretagogue agent for dry eye treatment was confirmed, opening the door for future clinical trials and studies to extrapolate the findings for dry eye patients.
Collapse
Affiliation(s)
- Carlos Carpena-Torres
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain; (C.C.-T.); (A.M.-G.); (C.R.-P.)
| | - Jesus Pintor
- Ocupharm Research Group, Department of Biochemistry and Molecular Biology, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain; (J.P.); (F.H.-T.); (A.M.-Á.)
| | - Fernando Huete-Toral
- Ocupharm Research Group, Department of Biochemistry and Molecular Biology, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain; (J.P.); (F.H.-T.); (A.M.-Á.)
| | - Alba Martin-Gil
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain; (C.C.-T.); (A.M.-G.); (C.R.-P.)
| | - Candela Rodríguez-Pomar
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain; (C.C.-T.); (A.M.-G.); (C.R.-P.)
| | - Alejandro Martínez-Águila
- Ocupharm Research Group, Department of Biochemistry and Molecular Biology, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain; (J.P.); (F.H.-T.); (A.M.-Á.)
| | - Gonzalo Carracedo
- Ocupharm Research Group, Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos de Jalón 118, 28037 Madrid, Spain; (C.C.-T.); (A.M.-G.); (C.R.-P.)
- Correspondence:
| |
Collapse
|