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Garcia SADS, da Rocha PBR, Souza BDS, Paz ATS, Negris ALC, Marreto RN, da Conceição EC, Bara MTF, Taveira SF. Enhanced Skin Permeation of Punicalagin after Topical Application of Pluronic Micelles or Vesicles Loaded with Lafoensia pacari Extract. PLANTA MEDICA 2022; 88:479-488. [PMID: 33862644 DOI: 10.1055/a-1464-1525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Punicalagin, the principal ellagitannin of Lafoensia pacari leaves, has proven antioxidant activity, and standardized extracts of L. pacari can be topically used for skin aging management. We hypothesized that Pluronic nanomicelles or vesicles could solubilize sufficiently large amounts of the standardized extracts of L. pacari and provide chemical stability to punicalagin. The standardized extracts of L. pacari were obtained with an optimized extraction procedure, and the antioxidant activity was characterized. Formulations containing Pluronic at 25% and 35% were obtained with or without Span 80. They were characterized by average diameter, polydispersity index, punicalagin content, physicochemical stability, and rheology. A release and skin permeation study was carried out in vertical diffusion cells. The extraction procedure allowed quantifying high punicalagin content (i.e., 141.61 ± 3.87 mg/g). The standardized extracts of L. pacari showed antioxidant activity for all evaluated methods. Pluronic at 25 and Pluronic at 35 with standardized extracts of L. pacari showed an average diameter of about 25 nm. The addition of Span 80 significantly increased the mean diameter by 15-fold (p < 0.05), indicating the spontaneous formation of vesicles. Pluronic formulations significantly protected punicalagin from chemical degradation (p < 0.05). Pluronic at 25 formulations presented as free-flowing liquid-like systems, while Pluronic at 35 resulted in an increase of about 44-fold in |ƞ*|. The addition of Span 80 significantly reduced the Pluronic sol-gel transition temperature (p < 0.05), indicating the formation of vesicles. Formulations with Span 80 significantly enhanced punicalagin skin permeation compared to formulations without Span 80 (p < 0.05). Formulations with Span 80 were demonstrated to be the most promising formulations, as they allowed significant permeation of punicalagin (about 80 to 315 µg/cm2), which has been shown to have antioxidant activity.
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Affiliation(s)
- Sandra Alves de Sousa Garcia
- Natural Products Research Laboratory (LPPN), School of Pharmacy - Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
| | - Priscila Bianca Rodrigues da Rocha
- Laboratory of Nanosystems and Drug Delivery Devices (NanoSYS), School of Pharmacy - Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
| | - Bruno Dos Santos Souza
- Laboratory of Nanosystems and Drug Delivery Devices (NanoSYS), School of Pharmacy - Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
| | - Andressa Tuane Santana Paz
- Natural Products Research Laboratory (LPPN), School of Pharmacy - Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
| | - Ana Luiza Caetano Negris
- Laboratory of Nanosystems and Drug Delivery Devices (NanoSYS), School of Pharmacy - Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
| | - Ricardo Neves Marreto
- Laboratory of Nanosystems and Drug Delivery Devices (NanoSYS), School of Pharmacy - Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
| | - Edemilson Cardoso da Conceição
- Natural Products Research Laboratory (LPPN), School of Pharmacy - Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
| | - Maria Teresa Freitas Bara
- Natural Products Research Laboratory (LPPN), School of Pharmacy - Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
| | - Stephânia Fleury Taveira
- Laboratory of Nanosystems and Drug Delivery Devices (NanoSYS), School of Pharmacy - Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
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Benhalilou N, Alsamri H, Alneyadi A, Athamneh K, Alrashedi A, Altamimi N, Al Dhaheri Y, Eid AH, Iratni R. Origanum majorana Ethanolic Extract Promotes Colorectal Cancer Cell Death by Triggering Abortive Autophagy and Activation of the Extrinsic Apoptotic Pathway. Front Oncol 2019; 9:795. [PMID: 31497536 PMCID: PMC6712482 DOI: 10.3389/fonc.2019.00795] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 08/06/2019] [Indexed: 12/11/2022] Open
Abstract
Colorectal cancer is considered as the third leading cause of cancer death. In the present study, we investigated the potential anticancer effect and the molecular mechanism of Origanum majorana ethanolic extract (OME) against human colorectal cancer cells. We showed that OME exhibited strong anti-proliferative activity in a concentration- and time-dependent manner against two human colorectal cancer cell lines (HT-29 and Caco-2). OME inhibited cell viability, colony growth and induced mitotic arrest of HT-29 cells. Also, OME induced DNA damage, triggered abortive autophagy and activated a caspase 3 and 7-dependent extrinsic apoptotic pathway, most likely through activation of the TNFα pathway. Time-course analysis revealed that DNA damage occurred concomitantly with abortive autophagy after 4 h post-OME treatment while apoptosis was activated only 24 h later. Blockade of autophagy initiation, by 3-methyladenine, partially rescued OME-induced cell death. Cell viability arose from 37% in control group to 67% in group pre-treated with 3-MA before addition of OME. Inhibition of apoptosis, however, had a minimal effect on cell viability; it rose from 37% in control group to 43% in group pre-treated with Z-VAD-FMK. We also found that OME downregulated survivin in HT-29 cells. Our findings provide a strong evidence that O. majorana extract possesses strong anti-colon cancer potential, at least, through induction of autophagy and apoptosis. These finding provide the basis for therapeutic potential of O. majorana in the treatment of colon cancer.
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Affiliation(s)
- Nehla Benhalilou
- Department of Biology, College of Science, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Halima Alsamri
- Department of Biology, College of Science, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Aysha Alneyadi
- Department of Biology, College of Science, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Khawlah Athamneh
- Department of Biology, College of Science, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Asma Alrashedi
- Department of Biology, College of Science, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Nedaa Altamimi
- Department of Biology, College of Science, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Yusra Al Dhaheri
- Department of Biology, College of Science, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Ali H Eid
- Department of Pharmacology and Toxicology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Rabah Iratni
- Department of Biology, College of Science, United Arab Emirates University, Abu Dhabi, United Arab Emirates
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