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Sufian MA, Abbas G, Rasul A, Irfan M, Khan HU. Moxifloxacin-loaded nanoparticles of thiolated xyloglucan for ocular drug delivery: Permeation, mucoadhesion and pharmacokinetic evaluation. Int J Biol Macromol 2024; 270:132522. [PMID: 38768922 DOI: 10.1016/j.ijbiomac.2024.132522] [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: 02/05/2024] [Revised: 05/05/2024] [Accepted: 05/17/2024] [Indexed: 05/22/2024]
Abstract
The current study goal was to improve mucoadhesive potential and ocular pharmacokinetics of nanoparticles of thiolated xyloglucan (TXGN) containing moxifloxacin (MXF). Thiolation of xyloglucan (XGN) was achieved with esterification with 3-mercaptopropionic acid. TXGN was characterized by NMR and FTIR analysis. The nanoparticles of TXGN were prepared using ionic-gelation method and evaluate the antibacterial properties. TXGN and nanoparticles were determined to possess 0.06 and 0.08 mmol of thiol groups/mg of polymer by Ellman's method. The ex-vivo bioadhesion time of TXGN and nanoparticles was higher than XGN in a comparative assessment of their mucoadhesive properties. The creation of a disulfide link between mucus and TXGN is responsible for the enhanced mucoadhesive properties of TXGN (1-fold) and nanoparticles (2-fold) over XGN. Improved MXF penetration in nanoparticulate formulation (80 %) based on TXGN was demonstrated in an ex-vivo permeation research utilizing rabbit cornea. Dissolution study showed 95 % release of MXF from nanoparticles. SEM images of nanoparticles showed spherical shape and cell viability assay showed nontoxic behavior when tested on RPE cell line. Antibacterial analysis revealed a zone of inhibition of 31.5 ± 0.5 mm for MXF, while NXM3 exhibited an expanded zone of 35.5 ± 0.4 mm (p < 0.001). In conclusion, thiolation of XGN improves its bioadhesion, permeation, ocular-retention and pharmacokinetics of MXF.
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Affiliation(s)
- Muhammad Abu Sufian
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Ghulam Abbas
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan.
| | - Akhtar Rasul
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Muhammad Irfan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan.
| | - Hafeez Ullah Khan
- Department of Pharmaceutics, College of Pharmacy, University of Sargodha, Sargodha, Pakistan
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Adil M, Dastagir G, Quddoos A, Naseer M, Filimban FZ. HPLC analysis, genotoxic and antioxidant potential of Achillea millefolium L. and Chaerophyllum villosum Wall ex. Dc. BMC Complement Med Ther 2024; 24:91. [PMID: 38365652 PMCID: PMC10870592 DOI: 10.1186/s12906-024-04344-1] [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: 09/23/2023] [Accepted: 01/10/2024] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND Methanolic and chloroformic extract of Achillea millefolium and Chaerophyllum villosum were evaluated for HPLC analysis, genotoxic and antioxidant potential. MATERIALS AND METHODS Genotoxic activity was carried out on human blood lymphocytes via comet assay and antioxidant activity was studied through DPPH method. RESULTS The genotoxic potential of A. millefolium and C. villosum's methanolic and chloroformic extract was analysed using comet assay technique. Comet shaped human lymphocytes cells were observed when treated with different concentrations (50 mg/mL, 75 mg/mL, 100 mg/mL) of methanolic and chloroformic extract of both plants. Reading was taken on the basis of damaged DNA head and tail length. Greater the length of tail as compared to head, greater will be the damage and vice versa. Total comet score was obtained from A. millefolium subjected to different concentrations. After a time interval of 24 h both the extract showed dose dependant genoprotection with maximum genoprotectivity at 98.7 ± 12.7 and 116 ± 5.3 at 50 mg/100 mL for methanolic and chloroformic extract respectively. Similarly Total Comet score was obtained from C. villosum subjected to different concentrations of methanolic and chloroformic extract. After 24 h exhibited dose dependent genoprotection with maximum protectivity at 85.7 ± 22.0 and 101.7 ± 8.6 at 50 mg/100 mL for methanolic and chloroformic extract were determined. The antioxidant activity revealed that methanolic extract of A. millefolium showed highest antioxidant activity (84.21%) at 300 mg/ml after 90 min while the chloroformic extract of C. villosum exhibited highest (68.46%) antioxidant activity (59.69%) at 300 µg/ml after 90 min but less than the standard drug ascorbic acid (88.72%). Quantitative phytochemical screening revealed high percentage of alkaloids (27.4%), Phenols (34.5%), Flavonoids (32.4%) as compared to Tannins (12%) in methanolic extract of A.millefolium. While high percentage of alkaloids (31.4), Phenols (19.3%), Flavonoids (35.5%) as compared to Tannins (16.6%) in chloroformic extract of C. villosum. CONCLUSION The present results showed that A. millefolium and C. villosum possess a number of important compounds and revealed genoprotective property which may be used to treat several genetic disorders such as alzeimer's disease in future (Grodzicki W, Dziendzikowska K, Antioxidants 9(3):229, 2020).
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Affiliation(s)
- Muhammad Adil
- Pharmacognosy Laboratory, Department of Botany, University of Peshawar, Peshawar, Pakistan.
- Centre for Plant Sciences and Biodiversity, University of Swat, Charbagh, Pakistan.
- Department of Chemical and Life Sciences, Qurtuba University of Science and Information Technology, Peshawar, Pakistan.
| | - Ghulam Dastagir
- Pharmacognosy Laboratory, Department of Botany, University of Peshawar, Peshawar, Pakistan
| | - Atifa Quddoos
- Department of Chemical and Life Sciences, Qurtuba University of Science and Information Technology, Peshawar, Pakistan
| | - Muhammad Naseer
- Department of Chemical and Life Sciences, Qurtuba University of Science and Information Technology, Peshawar, Pakistan.
| | - Faten Zubair Filimban
- King Abdulaziz University, Faculty of Science Department of Biological Sciences, Division of Botany, Jeddah, Saudi Arabia
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Galvis V, Prada AM, Tello A, Parra MM, Camacho PA, Polit MP. Safety of intracameral application of moxifloxacin and dexamethasone (Vigadexa®) after phacoemulsification surgery. Graefes Arch Clin Exp Ophthalmol 2023; 261:3215-3221. [PMID: 37227478 PMCID: PMC10587335 DOI: 10.1007/s00417-023-06095-0] [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: 09/15/2022] [Revised: 04/19/2023] [Accepted: 04/26/2023] [Indexed: 05/26/2023] Open
Abstract
BACKGROUND Intracameral antibiotics, such as moxifloxacin and cefuroxime, are safe to corneal endothelial cells and effective prophylaxis of endophthalmitis after cataract surgery. Corneal endothelial cells decrease in density after cataract surgery. Any substance used in the anterior chamber may affect corneal endothelial cells and lead to a greater decrease in density. This study wants to determine the percentage of endothelial cell loss after cataract extraction by phacoemulsification with off-label intracameral injection of moxifloxacin and dexamethasone (Vigadexa®). METHODS An observational retrospective study was performed. The clinical records of patients undergoing cataract surgery by phacoemulsification plus intracameral injection of Vigadexa® were analyzed. Endothelial cell loss (ECL) was calculated using preoperative and postoperative endothelial cell density. The relation of endothelial cell loss with cataract grade using LOCS III classification, total surgery time, total ultrasound time, total longitudinal power time, total torsional amplitude time, total aspiration time, estimated fluid usage, and cumulative dissipated energy (CDE) was studied using univariate linear regression analysis and logistic regression analysis. RESULTS The median loss of corneal endothelial cells was 4.6%, interquartile range 0 to 10.4%. Nuclear color and CDE were associated with increased ECL. ECL>10% was associated with age and total ultrasound time in seconds. CONCLUSIONS The endothelial cell loss after the intracameral use of Vigadexa® at the end of cataract surgery was similar to the reported in other studies of cataract surgery without the use of intracameral prophylaxis for postoperative endophthalmitis (POE). This study confirmed the association of CDE and nuclear opalescence grade with postoperative corneal endothelial cell loss.
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Affiliation(s)
- Virgilio Galvis
- Centro Oftalmológico Virgilio Galvis, Calle 158 20-95, Consultorio 301, Torre C, Cañaveral, Floridablanca, Santander, Colombia
- Universidad Autónoma de Bucaramanga (UNAB), Bucaramanga, Colombia
- Fundación Oftalmológica de Santander (FOSCAL), Floridablanca, Colombia
| | - Angelica Maria Prada
- Centro Oftalmológico Virgilio Galvis, Calle 158 20-95, Consultorio 301, Torre C, Cañaveral, Floridablanca, Santander, Colombia
- Universidad Autónoma de Bucaramanga (UNAB), Bucaramanga, Colombia
- Fundación Oftalmológica de Santander (FOSCAL), Floridablanca, Colombia
| | - Alejandro Tello
- Centro Oftalmológico Virgilio Galvis, Calle 158 20-95, Consultorio 301, Torre C, Cañaveral, Floridablanca, Santander, Colombia.
- Universidad Autónoma de Bucaramanga (UNAB), Bucaramanga, Colombia.
- Fundación Oftalmológica de Santander (FOSCAL), Floridablanca, Colombia.
- Universidad Industrial de Santander (UIS), Bucaramanga, Colombia.
| | - Maria Margarita Parra
- Universidad Autónoma de Bucaramanga (UNAB), Bucaramanga, Colombia
- Universidad Industrial de Santander (UIS), Bucaramanga, Colombia
| | - Paul Anthony Camacho
- Universidad Autónoma de Bucaramanga (UNAB), Bucaramanga, Colombia
- Fundación Oftalmológica de Santander (FOSCAL), Floridablanca, Colombia
| | - María Paz Polit
- Universidad Autónoma de Bucaramanga (UNAB), Bucaramanga, Colombia
- Fundación Oftalmológica de Santander (FOSCAL), Floridablanca, Colombia
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Dias-Teixeira KL, Sharifian Gh M, Romano J, Norouzi F, Laurie GW. Autophagy in the normal and diseased cornea. Exp Eye Res 2022; 225:109274. [PMID: 36252655 PMCID: PMC10083687 DOI: 10.1016/j.exer.2022.109274] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/23/2022] [Accepted: 09/29/2022] [Indexed: 01/18/2023]
Abstract
The cornea and covering tear film are together the 'objective lens' of the eye through which 80% of light is refracted. Despite exposure to a physically harsh and at times infectious or toxic environment, transparency essential for sight is in most cases maintained. Such resiliency makes the avascular cornea a superb model for the exploration of autophagy in the regulation of homeostasis with relevancy to all organs. Nonetheless, missense mutations and inflammation respectively clog or apparently overwhelm autophagic flux to create dystrophies much like in neurodegenerative diseases or further exacerbate inflammation. Here there is opportunity to generate novel topical therapies towards the restoration of homeostasis with potential broad application.
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Affiliation(s)
| | | | - Jeff Romano
- Department of Cell Biology, University of Virginia, Charlottesville, VA, USA
| | - Fatemeh Norouzi
- Department of Cell Biology, University of Virginia, Charlottesville, VA, USA
| | - Gordon W Laurie
- Department of Cell Biology, University of Virginia, Charlottesville, VA, USA; Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA; Department of Ophthalmology, University of Virginia, Charlottesville, VA, USA.
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Kaufman AC, Bacacao BS, Berkay B, Sharma D, Mishra A, O’Toole GA, Saunders JE, Xia A, Bekale LA, Maria PLS. Povidone-Iodine Fails to Eradicate Chronic Suppurative Otitis Media and Demonstrates Ototoxic Risk in Mice. Otol Neurotol 2022; 43:e1121-e1128. [PMID: 36240734 PMCID: PMC10244885 DOI: 10.1097/mao.0000000000003726] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
HYPOTHESIS Commercially available povidone-iodine solution can eliminate biofilms and persister cells rapidly in in vivo achievable concentrations without inducing ototoxicity. BACKGROUND Chronic suppurative otitis media (CSOM) is a substantial global problem. Current treatment options often induce a temporary remission without leading to a permanent cessation of symptoms secondary to the treatments' inability to eliminate persister cells. Povidone-iodine has been shown to be able to clear biofilm and planktonic cells in in vitro assays, but there are reports of ototoxic effects limiting its clinical utility. METHODS Bacterial and biofilm growth with quantification by spectrophotomer, murine auditory brainstem response (ABR), and distortion product otoacoustic emissions, immunohistochemistry, in vivo povidone-iodine treatment of murine CSOM, persister cell assay. RESULTS Commercially available 10% povidone-iodine solution is able to completely eradicate multiple clinical strains of Pseudomonas aeruginosa and Staphylococcus aureus in vitro with 10 minutes of exposure. Mice that have received a transtympanic injection of 1% povidone-iodine solution did not have significantly different auditory brainstem response or distortion product otoacoustic emission results compared with the control. Mice that received a povidone-iodine scrub or 10% povidone-iodine solution had significantly worsened hearing (25- and 13-dB increase in threshold, respectively; p < 0.05). In vivo CSOM infection recurred in all mice after the completion of treatment with 10% povidone-iodine solution, and there was no improvement in the bacterial load after treatment, indicating in vivo failure of therapy. CONCLUSION Povidone-iodine solution is effective at eliminating biofilm and persister cells in vitro at in vivo achievable concentrations but fails in vivo most likely because of kinetics of distribution in vivo. Even if drug distribution could be improved, the therapeutic window is likely to be too small given that the diluted solution does not have ototoxic potential, whereas while the scrub variant, which contains detergents, and the undiluted solution are ototoxic after a single treatment.
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Affiliation(s)
- Adam C. Kaufman
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
| | - Brian S. Bacacao
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
| | - Betul Berkay
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
| | - Devesh Sharma
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
| | - Anupam Mishra
- Department of Otorhinolaryngology, Head and Neck Surgery, King George’s Medical University, Lucknow, India
| | - George A. O’Toole
- Department of Microbiology and Immunology, Dartmouth University, Hanover, New Hampshire
| | - James E. Saunders
- Department of Microbiology and Immunology, Dartmouth University, Hanover, New Hampshire
| | - Anping Xia
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
| | - Laurent A. Bekale
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
| | - Peter L. Santa Maria
- Department of Otolaryngology, Head and Neck Surgery, Stanford University, Palo Alto, California
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Liang Y, Zhang Z, Tu J, Wang Z, Gao X, Deng K, El-Samahy MA, You P, Fan Y, Wang F. γ-Linolenic Acid Prevents Lipid Metabolism Disorder in Palmitic Acid-Treated Alpha Mouse Liver-12 Cells by Balancing Autophagy and Apoptosis via the LKB1-AMPK-mTOR Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:8257-8267. [PMID: 34281337 DOI: 10.1021/acs.jafc.1c02596] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Excessive fat deposition is the main character in nonalcoholic fatty liver disease (NAFLD), while γ-linolenic acid (GLA) is a polyunsaturated fatty acid that can reduce lipid deposition. This study investigated the effect and regulatory mechanism of GLA (100 μM) on lipid metabolism in alpha mouse liver 12 (AML-12) cells treated by 400 μM palmitic acid (PA). GLA reduced lipid content and increased fatty acid β oxidation, as indicated by decreasing triglyceride and cholesterol contents and increasing mRNA and protein expressions of CPT1α and PPARα. GLA relieved oxidative stress caused by PA, upregulated mRNA levels of superoxide dismutase and glutathione peroxidase, and decreased reactive oxygen species content. GLA reduced apoptosis, as indicated by decreases in the BAX/BCL2 expression level and apoptosis percentage. GLA activated autophagy, autophagosome-lysosome fusion, and LKB1-AMPK-mTOR signaling and upregulated mRNA and protein expressions of Beclin-1, autophagy-related 5, and liver kinase B1 (LKB1). These effects of GLA on lipid metabolism disorders of PA-treated hepatocytes were reversed by autophagy inhibitor 3MA and AMPK inhibitor compound C, confirming our conclusions. Overall, GLA can protect AML-12 cells from lipid metabolism disorder caused by PA via balancing autophagy and apoptosis mediated by the LKB1-AMPK-mTOR pathway. Consequently, GLA, as a dietary supplement, can help to prevent and treat NAFLD by regulating lipid metabolism and autophagy.
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Affiliation(s)
- Yaxu Liang
- Institute of Goats and Sheep Science, Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Zhen Zhang
- Institute of Goats and Sheep Science, Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Jiayu Tu
- Institute of Goats and Sheep Science, Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Zhibo Wang
- Institute of Goats and Sheep Science, Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Xiaoxiao Gao
- Institute of Goats and Sheep Science, Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Kaiping Deng
- Institute of Goats and Sheep Science, Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - M A El-Samahy
- Institute of Goats and Sheep Science, Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Peihua You
- Portal Agri-Industries Co., Ltd., Xingdian Street, Pikou District, Nanjing 210095, PR China
| | - Yixuan Fan
- Institute of Goats and Sheep Science, Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu 210095, PR China
| | - Feng Wang
- Institute of Goats and Sheep Science, Nanjing Agricultural University, No. 1 Weigang, Nanjing, Jiangsu 210095, PR China
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