1
|
Sampathi S, Haribhau CJ, Kuchana V, Junnuthula V, Dyawanapelly S. Nanosuspension encapsulated chitosan-pectin microbeads as a novel delivery platform for enhancing oral bioavailability. Carbohydr Polym 2023; 319:121177. [PMID: 37567693 DOI: 10.1016/j.carbpol.2023.121177] [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: 04/13/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 08/13/2023]
Abstract
The current study aimed to overcome the poor solubility and colon-specific delivery of curcumin (CUR) by formulating a curcumin nanosuspension (CUR-NS) using the antisolvent precipitation method. Freeze-dried CUR-NS was encapsulated into microbeads (CUR-NS-MB) by the ionotropic gelation method using zinc chloride (as a cross-linking agent) with the help of rate-controlling polymers, pectin, and chitosan. Furthermore, cellulose acetate phthalate (CAP) is incorporated as an enteric polymer to protect against acidic medium degradation. Particle size, surface morphology, interaction studies, and entrapment studies were performed to optimize CUR-NSs. Nanosuspensions stabilized with hydroxypropyl methylcellulose (HPMC E-15; 1 % w/v) showed an average particle size of 193.5 ± 4.31 nm and a polydispersity index (PDI) of 0.261 ± 0.020. The optimized microbeads (CUR-NS-MB) showed 89.45 ± 3.11 % entrapment efficiency with a drug loading of 14.54 ± 1.02 %. The optimized formulation (CUR-NS-MB) showed colon-specific in vitro drug release bypassing acid pH degradation. In animal studies, a 2.5-fold increase in Cmax and a 4.4-fold increase in AUC048h were observed with CUR-NS-MB, which was more significant than that of plain CUR. Therefore, the developed CUR-NS-MB has the potential to be used as a colon-specific delivery system.
Collapse
Affiliation(s)
- Sunitha Sampathi
- GITAM School of Pharmacy, GITAM Deemed to be University, Rudraram, Hyderabad, Telangana, India.
| | - Chormale Jaydeep Haribhau
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India
| | - Vijaya Kuchana
- Teegala Krishna Reddy College of Pharmacy, Hyderabad, Telangana, India
| | | | - Sathish Dyawanapelly
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai, India.
| |
Collapse
|
2
|
Roshani M, Jafari A, Loghman A, Sheida AH, Taghavi T, Tamehri Zadeh SS, Hamblin MR, Homayounfal M, Mirzaei H. Applications of resveratrol in the treatment of gastrointestinal cancer. Biomed Pharmacother 2022; 153:113274. [PMID: 35724505 DOI: 10.1016/j.biopha.2022.113274] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/28/2022] [Accepted: 06/08/2022] [Indexed: 12/15/2022] Open
Abstract
Natural product compounds have lately attracted interest in the scientific community as a possible treatment for gastrointestinal (GI) cancer, due to their anti-inflammatory and anticancer properties. There are many preclinical, clinical, and epidemiological studies, suggesting that the consumption of polyphenol compounds, which are abundant in vegetables, grains, fruits, and pulses, may help to prevent various illnesses and disorders from developing, including several GI cancers. The development of GI malignancies follows a well-known path, in which normal gastrointestinal cells acquire abnormalities in their genetic composition, causing the cells to continuously proliferate, and metastasize to other sites, especially the brain and liver. Natural compounds with the ability to affect oncogenic pathways might be possible treatments for GI malignancies, and could easily be tested in clinical trials. Resveratrol is a non-flavonoid polyphenol and a natural stilbene, acting as a phytoestrogen with anti-cancer, cardioprotective, anti-oxidant, and anti-inflammatory properties. Resveratrol has been shown to overcome resistance mechanisms in cancer cells, and when combined with conventional anticancer drugs, could sensitize cancer cells to chemotherapy. Several new resveratrol analogs and nanostructured delivery vehicles with improved anti-GI cancer efficacy, absorption, and pharmacokinetic profiles have already been developed. This present review focuses on the in vitro and in vivo effects of resveratrol on GI cancers, as well as the underlying molecular mechanisms of action.
Collapse
Affiliation(s)
- Mohammad Roshani
- Internal Medicine and Gastroenterology, Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ameneh Jafari
- Advanced Therapy Medicinal Product (ATMP) Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran; Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Amir Hossein Sheida
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | | | | | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein 2028, South Africa
| | - Mina Homayounfal
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
| |
Collapse
|
3
|
Zhang S, Waterhouse GIN, Xu F, He Z, Du Y, Lian Y, Wu P, Sun-Waterhouse D. Recent advances in utilization of pectins in biomedical applications: a review focusing on molecular structure-directing health-promoting properties. Crit Rev Food Sci Nutr 2021:1-34. [PMID: 34637646 DOI: 10.1080/10408398.2021.1988897] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The numerous health benefits of pectins justify their inclusion in human diets and biomedical products. This review provides an overview of pectin extraction and modification methods, their physico-chemical characteristics, health-promoting properties, and pharmaceutical/biomedical applications. Pectins, as readily available and versatile biomolecules, can be tailored to possess specific functionalities for food, pharmaceutical and biomedical applications, through judicious selection of appropriate extraction and modification technologies/processes based on green chemistry principles. Pectin's structural and physicochemical characteristics dictate their effects on digestion and bioavailability of nutrients, as well as health-promoting properties including anticancer, immunomodulatory, anti-inflammatory, intestinal microflora-regulating, immune barrier-strengthening, hypercholesterolemia-/arteriosclerosis-preventing, anti-diabetic, anti-obesity, antitussive, analgesic, anticoagulant, and wound healing effects. HG, RG-I, RG-II, molecular weight, side chain pattern, and degrees of methylation, acetylation, amidation and branching are critical structural elements responsible for optimizing these health benefits. The physicochemical characteristics, health functionalities, biocompatibility and biodegradability of pectins enable the construction of pectin-based composites with distinct properties for targeted applications in bioactive/drug delivery, edible films/coatings, nano-/micro-encapsulation, wound dressings and biological tissue engineering. Achieving beneficial synergies among the green extraction and modification processes during pectin production, and between pectin and other composite components in biomedical products, should be key foci for future research.
Collapse
Affiliation(s)
- Shikai Zhang
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | | | - Fangzhou Xu
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Ziyang He
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Yuyi Du
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Yujing Lian
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Peng Wu
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China
| | - Dongxiao Sun-Waterhouse
- College of Food Science and Engineering, Shandong Agricultural University, Taian, China.,School of Chemical Sciences, The University of Auckland, Auckland, New Zealand
| |
Collapse
|
4
|
El-Messery TM, Aly E, López-Nicolas R, Sánchez-Moya T, Ros G. Bioaccessibility and antioxidant activity of PCL-microencapsulated olive leaves polyphenols and its application in yogurt. J Food Sci 2021; 86:4303-4315. [PMID: 34496055 DOI: 10.1111/1750-3841.15893] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 07/27/2021] [Accepted: 07/30/2021] [Indexed: 11/30/2022]
Abstract
Polycaprolactone (PCL)was used via double emulsion/solvent evaporation technique for the encapsulation of polyphenols olive leaves (OLs) extracts. In this study, the PCL-microcapsules loaded with OLs polyphenols extract powder were characterized by scanning electron microscopy and fourier transform infrared spectrometry analysis. Their total phenolic (TPC), total flavonoid (TFC) contents, and antioxidant activities (DPPH, FRAP, and ABTS), and polyphenols stability were measured after oral, gastric, and intestinal steps of in vitro digestion. PCL-microcapsules were utilized in formulating novel functional yogurt containing 0, 25, 50, and 75 mg of TPC estimated as mg GAE (added as PCL-microcapsules) per 100g yogurt. All yogurt samples were evaluated for their pH, acidity, syneresis, viscosity, and color during storage. In vitro digestion significantly affected the phenolic composition in non-encapsulated extract whereas it had a lower impact on encapsulated phenolics. Higher protection was provided for encapsulated OLs extract and their higher release was observed at the intestinal phase. Unlike the undigested OLs extract, which had a TPC of 490 mg GAE/100 g, lower values of TPC (136 and 289 mg GAE/100 g) were obtained for non-encapsulated and encapsulated OLs extract, respectively, in the intestinal fluids. Yogurt with PCL-microcapsules had lower viscosity, syneresis, and color parameters, compared to control yogurt. Thus, OLs represent a valuable and cheap source of polyphenols that can be successfully applied in microencapsulated form, in formulating functional yogurt.
Collapse
Affiliation(s)
| | - Esmat Aly
- Dairy Research Department, Food Technology Research Institute, Agricultural Research Center, Giza, Egypt
| | - Ruben López-Nicolas
- Department of Food Science and Nutrition, Faculty of Veterinary Science, Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia, Murcia, Spain
| | - Teresa Sánchez-Moya
- Department of Food Science and Nutrition, Faculty of Veterinary Science, Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia, Murcia, Spain
| | - Gaspar Ros
- Department of Food Science and Nutrition, Faculty of Veterinary Science, Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia, Murcia, Spain
| |
Collapse
|
5
|
Ren B, Kwah MXY, Liu C, Ma Z, Shanmugam MK, Ding L, Xiang X, Ho PCL, Wang L, Ong PS, Goh BC. Resveratrol for cancer therapy: Challenges and future perspectives. Cancer Lett 2021; 515:63-72. [PMID: 34052324 DOI: 10.1016/j.canlet.2021.05.001] [Citation(s) in RCA: 147] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/05/2021] [Accepted: 05/05/2021] [Indexed: 12/20/2022]
Abstract
Resveratrol (3,4',5-trihydroxy-trans-stilbene) has been expected to ameliorate cancer and foster breakthroughs in cancer therapy. Despite thousands of preclinical studies on the anticancer activity of resveratrol, little progress has been made in translational research and clinical trials. Most studies have focused on its anticancer effects, cellular mechanisms, and signal transduction pathways in vitro and in vivo. In this review, we aimed to discern the causes that prevent resveratrol from being used in cancer treatment. Among the various limitations, poor pharmacokinetics and low potency seem to be the two main bottlenecks of resveratrol. In addition, resveratrol-induced nephrotoxicity in multiple myeloma patients hinders its further development as an anticancer drug. New insights and strategies have been proposed to accelerate the conversion of resveratrol from bench to bedside. In the interim, the most promising approach is to enhance the bioavailability of resveratrol with new formulations. Alternatively, more potent analogues of resveratrol could be developed to augment its anticancer potency. Given all the gaps mentioned, much work remains to be done. However, if remarkable progress can be made, resveratrol may finally be used for cancer therapy.
Collapse
Affiliation(s)
- Boxu Ren
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, 434023, China
| | - Marabeth Xin-Yi Kwah
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore
| | - Cuiliu Liu
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, 434023, China
| | - Zhaowu Ma
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, 434023, China
| | - Muthu K Shanmugam
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore
| | - Lingwen Ding
- Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore
| | - Xiaoqiang Xiang
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Paul Chi-Lui Ho
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore
| | - Lingzhi Wang
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore; Cancer Science Institute of Singapore, National University of Singapore, Singapore, 117599, Singapore.
| | - Pei Shi Ong
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, 117543, Singapore.
| | - Boon Cher Goh
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore; Cancer Science Institute of Singapore, National University of Singapore, Singapore, 117599, Singapore; Department of Haematology-Oncology, National University Cancer Institute, Singapore, 119228, Singapore.
| |
Collapse
|
6
|
Two- component polymer beads with magnetic features as efficient means for active principles binding. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02639-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
7
|
Das S. Pectin based multi-particulate carriers for colon-specific delivery of therapeutic agents. Int J Pharm 2021; 605:120814. [PMID: 34147609 DOI: 10.1016/j.ijpharm.2021.120814] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 12/12/2022]
Abstract
In case of colon-specific delivery of therapeutic agents through oral route, microbial/enzyme-triggered release approach has several advantages over other approaches due to unique microbial ecosystem in the colon. Multiple-unit carriers have an edge over single-unit carriers for this purpose. Among different materials/polymers explored, pectin appears as a promising biopolymer to construct microbial-triggered colon-specific carriers. Pectin is specifically degraded by colonic enzymes but insusceptible to upper gastro-intestinal enzymes. In this article, utilization of pectin solely or in combination with other polymers and/or colonic-delivery approaches is critically discussed in detail in the context of multi-particulate systems. Several studies showed that pectin-based carriers can prevent the release of payload in the stomach but start to release in the intestine. Hence, pectin alone may construct delayed release formulation but may not be sufficient for effective colon-targeting. On the other hand, combination of pectin with other materials/polymers (e.g., chitosan and Eudragit® S-100) has demonstrated huge promise for colon-specific release of payload. Hence, smartly designed pectin-based multi-particulate carriers, especially in combination with other polymers and/or colon-targeting approaches (e.g., microbial-triggered + pH-triggered or microbial-triggered + pH-triggered + time-release or microbial-triggered + pH-triggered + pressure-based), can be successful colon-specific delivery systems. However, more clinical trials are necessary to bring this idea from bench to bedside.
Collapse
Affiliation(s)
- Surajit Das
- Takasago International Corporation, 5 Sunview Road, Singapore 627616, Singapore.
| |
Collapse
|
8
|
Optimized Ellagic Acid-Ca Pectinate Floating Beads for Gastroprotection against Indomethacin-Induced Gastric Injury in Rats. Biomolecules 2020; 10:biom10071006. [PMID: 32640741 PMCID: PMC7408148 DOI: 10.3390/biom10071006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/23/2020] [Accepted: 07/01/2020] [Indexed: 01/18/2023] Open
Abstract
A peptic ulcer is an alimentary tract injury that leads to a mucosal defect reaching the submucosa. This work aimed to optimize and maximize ellagic acid (EA) loading in Ca pectinate floating beads to maximize the release for 24 h. Three factors were selected: Ca pectinate concentration (X1, 1–3 w/v %), EA concentration (X2, 1–3 w/v %) and the dropping time (X3, 10–30 min). The factorial design proposed eight formulations. The optimized EA–Ca pectinate formulation was evaluated for the gastric ulcer index and the oxidative stress parameter determination of gastric mucosa. The results indicated that the optimum EA–Ca pectinate formula significantly improved the gastric ulcer index in comparison with raw EA. The protective effect of the optimized EA–Ca pectinate formula was further indicated by the histopathological features of the stomach. The results of the study indicate that an EA formulation in the form of Ca pectinate beads would be effective for protection against gastric ulcers because of Nonsteroidal anti-inflammatory drugs (NSAID) administration.
Collapse
|
9
|
Tang HY, Fang Z, Ng K. Dietary fiber-based colon-targeted delivery systems for polyphenols. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.04.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
10
|
Microemulsion composed of combination of skin beneficial oils as vehicle: Development of resveratrol-loaded microemulsion based formulations for skin care applications. Colloids Surf B Biointerfaces 2020; 194:111161. [PMID: 32521462 DOI: 10.1016/j.colsurfb.2020.111161] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/23/2020] [Accepted: 05/28/2020] [Indexed: 01/07/2023]
Abstract
Microemulsion can be a potential delivery vehicle to deliver skin care actives to deep skin layer for chronic skin care benefits. On top of skin care active, microemulsion vehicle composed of multiple skin beneficial oils can deliver additional skin care efficacies. In this study, microemulsions were developed using combinations of two skin beneficial oils, tea tree oil and medium chain triglyceride instead of single oil. For that, pseudo ternary phase diagrams were constructed on these oil combinations at different ratios of surfactant/co-surfactants. Ratio of oils and surfactant/co-surfactant combinations exhibited significant impact on the microemulsion region. A few compositions were selected from the single phase microemulsion regions of these phase diagrams for the preparation of resveratrol-loaded microemulsion and microemulsion gel formulations. The particle size of the resveratrol-loaded microemulsions were <50 nm. Cryogenic scanning electron microscope image clearly showed nano-droplets dispersed in continuous phase. Both physical and chemical stability of the formulations varied depending on their compositions, such as surfactant/co-surfactant combination and % total oil. The presence of chelating agent and anti-oxidant was also crucial to stabilize the formulations. The selected formulations demonstrated good physicochemical stability at 5 °C, 25 °C, and 40 °C/75 % RH (relative humidity) stability conditions. The results further showed that the % total oil and surfactant phase composition had huge influence on resveratrol release and skin permeation patterns from the microemulsion gels. In vitro skin permeation result indicated that the microemulsion gels can help resveratrol penetration into deep skin layer. Therefore, the developed resveratrol-loaded microemulsion gels can be utilized as skin care product with multiple skin care benefits.
Collapse
|
11
|
Resveratrol Nanoparticles: A Promising Therapeutic Advancement over Native Resveratrol. Processes (Basel) 2020. [DOI: 10.3390/pr8040458] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The importance of fruit-derived resveratrol (RES) in the treatment of various diseases has been discussed in various research publications. Those research findings have indicated the ability of the molecule as therapeutic in the context of in vitro and in vivo conditions. Mostly, the application of RES in in vivo conditions, encapsulation processes have been carried out using various nanoparticles that are made of biocompatible biomaterials, which are easily digested or metabolized, and RES is absorbed effectively. These biomaterials are non-toxic and are safe to be used as components in the biotherapeutics. They are made from naturally available by-products of food materials like zein or corn or components of the physiological system as with lipids. The versatility of the RES nanoparticles in their different materials, working range sizes, specificity in their targeting in various human diseases, and the mechanisms associated with them are discussed in this review.
Collapse
|
12
|
Zhu J, Huang Q. Nanoencapsulation of functional food ingredients. ADVANCES IN FOOD AND NUTRITION RESEARCH 2019; 88:129-165. [PMID: 31151723 DOI: 10.1016/bs.afnr.2019.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Many functional food ingredients are poorly soluble in water, susceptible to chemical degradation, and incompatible with surrounding food matrix. Other issues are related to limited oral bioavailability, unpleasant sensory properties, and poor release profiles. Nanoencapsulation of functional food ingredients can help increase their water solubility/dispersibility in foods and beverages, improve their bioavailability by exhibiting good dose-dependent functionalities, mask undesired flavors/tastes to reduce the adverse effect on mouth-feel, enhance shelf-life and compatibility during production, storage, transportation and utilization of food products, and control release rate or specific delivery environment for better performance on their functionalities. This chapter provides an overview of different delivery systems for different functional food ingredients, the types of materials suitable for wall materials or building blocks of nanocapsules, the fabrication methods to assemble different delivery systems and release these active ingredients under different physiological conditions.
Collapse
Affiliation(s)
- Jieyu Zhu
- Department of Food Science, Rutgers University, New Brunswick, NJ, United States
| | - Qingrong Huang
- Department of Food Science, Rutgers University, New Brunswick, NJ, United States.
| |
Collapse
|
13
|
Kataria R, Khatkar A. Resveratrol in Various Pockets: A Review. Curr Top Med Chem 2019; 19:116-122. [DOI: 10.2174/1568026619666190301173958] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 02/05/2019] [Accepted: 02/23/2019] [Indexed: 12/21/2022]
Abstract
Several phenolic compounds bind to proteins (such as enzymes) and interfere in their catalytic
mechanism. Interaction studies of natural polyphenol; Resveratrol with various targets like with
tubulin, protein kinase C alpha (PKCα), phosphodiesterase-4D, human oral cancer cell line proteins,
DNA sequences having AATT/TTAA segments, protein kinase C alpha, lysine-specific demethylase 1
have been reviewed in this article. Simulation studies indicate that resveratrol and its analogs/ derivatives
show good interaction with the target receptor through its hydroxyl groups by forming hydrogen
bonds and hydrophobic interactions with amino acid residues at the binding site. Binding geometry and
stability of complex formed by resveratrol show that it is a good inhibitor for many pathogenic targets.
Further studies in this direction is, however, the need of the hour to develop many more ligands based on
resveratrol skeleton which can further serve in the treatment of ailments.
Collapse
Affiliation(s)
- Ritu Kataria
- International Institute of Pharmaceutical Sciences, Sonepat, Haryana, India
| | - Anurag Khatkar
- Laboratory of Preservation Technology and Enzyme Inhibition Studies, Faculty of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India
| |
Collapse
|
14
|
Guru PR, Bera H, Das MP, Hasnain MS, Nayak AK. Aceclofenac-LoadedPlantago ovataF. Husk Mucilage-Zn+2-Pectinate Controlled-Release Matrices. STARCH-STARKE 2017. [DOI: 10.1002/star.201700136] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Pravat Ranjan Guru
- Department of Pharmaceutics; Dadhichi College of Pharmacy; Vidya Vihar, Sundargram, Cuttack 754002 Odisha India
| | - Hriday Bera
- Faculty of Pharmacy; AIMST University; Semeling 08100 Kedah Malaysia
| | - Mukti Prasad Das
- Department of Pharmaceutics; Dadhichi College of Pharmacy; Vidya Vihar, Sundargram, Cuttack 754002 Odisha India
| | - M. Saquib Hasnain
- Department of Pharmacy; Shri Venkateshwara University; NH-24, Amroha 244236 U.P. India
| | - Amit Kumar Nayak
- Department of Pharmaceutics; Seemanta Institute of Pharmaceutical Sciences; Mayurbhanj 757086 Odisha India
| |
Collapse
|
15
|
Silva RDCD, Teixeira JA, Nunes WDG, Zangaro GAC, Pivatto M, Caires FJ, Ionashiro M. Resveratrol: A thermoanalytical study. Food Chem 2017; 237:561-565. [DOI: 10.1016/j.foodchem.2017.05.146] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 05/26/2017] [Accepted: 05/29/2017] [Indexed: 02/08/2023]
|
16
|
Fabrication and characterization of biocompatible hybrid nanoparticles from spontaneous co-assembly of casein/gliadin and proanthocyanidin. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2017.06.036] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
17
|
Chitosan-glutaraldehyde activated calcium pectinate beads as a covalent immobilization support. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2017. [DOI: 10.1016/j.bcab.2017.10.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
18
|
|
19
|
Kang JH, Choung SY. Protective effects of resveratrol and its analogs on age-related macular degeneration in vitro. Arch Pharm Res 2016; 39:1703-1715. [PMID: 27659166 DOI: 10.1007/s12272-016-0839-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 09/11/2016] [Indexed: 12/13/2022]
Abstract
Damage of retinal pigment epithelial (RPE) cells by A2E may be critical for age-related macular degeneration (AMD) management. Accumulation and photooxidation of A2E are known to be one of the critical causes in AMD. Here, we evaluated the protective effect of resveratrol (RES), piceatannol (PIC) and RES glycones on blue-light-induced RPE cell death caused by A2E photooxidation. A2E treatment followed by blue light exposure caused significant damages on human RPE cells (ARPE-19). But the damages were attenuated by post- and pre-treatment of RES and PIC in our in vitro models. The results of cell free system and FAB-MS analysis clearly showed that the reduction of A2E by blue light exposure was significantly rescued, and that oxidized forms of A2E were significantly reduced by RES or PIC treatment. Besides, RES or PIC inhibited the intracellular accumulation of A2E. Not only RES and PIC but RES glycones showed protection of ARPE-19 cells against A2E and blue-light-induced photo-damage. These findings demonstrate that RES and its analogs may have protective effects against A2E and blue-light-induced ARPE-19 cell death through regulation of A2E accumulation as well as photooxidation of A2E. Thus RES and its analogs may be beneficial for AMD treatment.
Collapse
Affiliation(s)
- Jung-Hwan Kang
- Department of Life and Nanopharmaceutical Science of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Se-Young Choung
- Department of Life and Nanopharmaceutical Science of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea. .,Department of Preventive Pharmacy and Toxicology, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.
| |
Collapse
|
20
|
Electrosprayed nanocomposites based on hyaluronic acid derivative and Soluplus for tumor-targeted drug delivery. Colloids Surf B Biointerfaces 2016; 145:267-274. [PMID: 27208440 DOI: 10.1016/j.colsurfb.2016.05.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 04/08/2016] [Accepted: 05/03/2016] [Indexed: 01/06/2023]
Abstract
Nanocomposite (NC) based on hyaluronic acid-ceramide (HACE) and Soluplus (SP) was fabricated by electrospraying for the tumor-targeted delivery of resveratrol (RSV). Amphiphilic property of both HACE and SP has been used to entrap RSV in the internal cavity of NC. Electrospraying with established experimental conditions produced HACE/SP/RSV NC with 230nm mean diameter, narrow size distribution, negative zeta potential, and >80% drug entrapment efficiency. Sustained and pH-dependent drug release profiles were observed in drug release test. Cellular uptake efficiency of HACE/SP NC was higher than that of SP NC, mainly based on HA-CD44 receptor interaction, in MDA-MB-231 (CD44 receptor-positive human breast cancer) cells. Selective tumor targetability of HACE/SP NC, compared to SP NC, was also confirmed in MDA-MB-231 tumor-xenograted mouse model using a near-infrared fluorescence (NIRF) imaging. According to the results of pharmacokinetic study in rats, decreased in vivo clearance and increased half-life of RSV in NC group, compared to drug solution group, were shown. Given that these experimental results, developed HACE/SP NC can be a promising theranostic nanosystem for CD44 receptor-expressed cancers.
Collapse
|
21
|
Ha HK, Jeon NE, Kim JW, Han KS, Yun SS, Lee MR, Lee WJ. Physicochemical Characterization and Potential Prebiotic Effect of Whey Protein Isolate/Inulin Nano Complex. Korean J Food Sci Anim Resour 2016; 36:267-74. [PMID: 27194937 PMCID: PMC4869555 DOI: 10.5851/kosfa.2016.36.2.267] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 03/03/2016] [Accepted: 03/08/2016] [Indexed: 12/02/2022] Open
Abstract
The purposes of this study were to investigate the impacts of concentration levels of whey protein isolate (WPI) and inulin on the formation and physicochemical properties of WPI/inulin nano complexes and to evaluate their potential prebiotic effects. WPI/inulin nano complexes were produced using the internal gelation method. Transmission electron microscopy (TEM) and particle size analyzer were used to assess the morphological and physicochemical characterizations of nano complexes, respectively. The encapsulation efficiency of resveratrol in nano complexes was studied using HPLC while the potential prebiotic effects were investigated by measuring the viability of probiotics. In TEM micrographs, the globular forms of nano complexes in the range of 10 and 100 nm were successfully manufactured. An increase in WPI concentration level from 1 to 3% (w/v) resulted in a significant (p<0.05) decrease in the size of nano complexs while inulin concentration level did not affect the size of nano complexes. The polydispersity index of nano complexes was below 0.3 in all cases while the zeta-potential values in the range of -2 and -12 mV were observed. The encapsulation efficiency of resveratrol was significantly (p<0.05) increased as WPI and inulin concentration levels were increased from 1 to 3% (w/v). During incubation at 37℃ for 24 h, WPI/inulin nano complexes exhibited similar viability of probiotics with free inulin and had significantly (p<0.05) higher viability than negative control. In conclusions, WPI and inulin concentration levels were key factors affecting the physicochemical properties of WPI/inulin nano complexes and had potential prebiotic effect.
Collapse
Affiliation(s)
| | | | | | - Kyoung-Sik Han
- Department of Animal Biotechnology and Resource, Sahmyook University, Seoul 01795, Korea
| | | | - Mee-Ryung Lee
- Department of Food and Nutrition, Daegu University, Gyeongsan 38453, Korea
| | - Won-Jae Lee
- Corresponding authors: Won-Jae Lee, Department of Animal Bioscience (Institute of Agriculture and Life Science), Gyeongsang National University, Jinju 52828, Korea. Tel: +82-55-772-1884, Fax: +82-55-772-1889, E-mail: ; Mee-Ryung Lee, Department of Food and Nutrition, Daegu University, Gyeongsan 38453, Korea. Tel: +82-53-850-6837, Fax: +82-53-850-6839, E-mail:
| |
Collapse
|
22
|
Zupančič Š, Lavrič Z, Kristl J. Stability and solubility of trans-resveratrol are strongly influenced by pH and temperature. Eur J Pharm Biopharm 2015; 93:196-204. [PMID: 25864442 DOI: 10.1016/j.ejpb.2015.04.002] [Citation(s) in RCA: 196] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 03/07/2015] [Accepted: 04/06/2015] [Indexed: 12/17/2022]
Abstract
Recently trans-resveratrol (trans-RSV) has received great attention due to its prophylactic and therapeutic properties. Its limited bioavailability provides compelling evidence of the need for more suitable formulations in order to attain better clinical effectiveness. Some physicochemical properties of trans-RSV are still unknown or research findings are contradictory. Therefore, this paper presents newly determined trans-RSV solubility and stability at various pH and temperatures, and the importance of such data for the studies of novel trans-RSV-loaded nanofibers. In acidic pH trans-RSV was stable, whereas its degradation started to increase exponentially above pH 6.8. Consequently, it is worthwhile to note that special consideration has to be dedicated to long dissolution testing or biological assays on cell lines in order to obtain relevant data. Measurements were done by validated UV/VIS spectroscopy, HPLC, and newly developed UPLC methods. Specificity was confirmed for HPLC and UPLC method, whereas UV/VIS spectroscopy resulted in false higher trans-RSV concentrations in conditions under which it was not stable (alkaline pH, light, increased temperature). The study is of interest because it draws attention to the importance of careful selected experimental conditions, their influence on the trans-RSV stability and the implications this has for formulation development, storage, and maintenance of therapeutic doses.
Collapse
Affiliation(s)
- Špela Zupančič
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva cesta 7, 1000 Ljubljana, Slovenia
| | - Zoran Lavrič
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva cesta 7, 1000 Ljubljana, Slovenia
| | - Julijana Kristl
- University of Ljubljana, Faculty of Pharmacy, Aškerčeva cesta 7, 1000 Ljubljana, Slovenia.
| |
Collapse
|
23
|
Gadalla HH, Soliman GM, Mohammed FA, El-Sayed AM. Development and in vitro/in vivo evaluation of Zn-pectinate microparticles reinforced with chitosan for the colonic delivery of progesterone. Drug Deliv 2015; 23:2541-2554. [DOI: 10.3109/10717544.2015.1028602] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Hytham H. Gadalla
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Ghareb M. Soliman
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Fergany A. Mohammed
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Ahmed M. El-Sayed
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| |
Collapse
|
24
|
Mitra S, Maity S, Sa B. Effect of different cross-linking methods and processing parameters on drug release from hydrogel beads. Int J Biol Macromol 2015; 74:489-97. [DOI: 10.1016/j.ijbiomac.2014.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 10/27/2014] [Accepted: 12/03/2014] [Indexed: 11/24/2022]
|
25
|
Effect of chitosan concentration on PLGA microcapsules for controlled release and stability of resveratrol. Int J Biol Macromol 2015; 72:531-6. [DOI: 10.1016/j.ijbiomac.2014.08.053] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 08/15/2014] [Accepted: 08/20/2014] [Indexed: 01/10/2023]
|
26
|
Paini M, Aliakbarian B, Casazza AA, Perego P, Ruggiero C, Pastorino L. Chitosan/dextran multilayer microcapsules for polyphenol co-delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 46:374-80. [DOI: 10.1016/j.msec.2014.10.047] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 10/21/2014] [Indexed: 11/26/2022]
|
27
|
Zam W, Bashour G, Abdelwahed W, Khayata W. Alginate-pomegranate peels' polyphenols beads: effects of formulation parameters on loading efficiency. BRAZ J PHARM SCI 2014. [DOI: 10.1590/s1984-82502014000400009] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Calcium alginate beads containing pomegranate peels' polyphenol extract were encapsulated by ionic gelation method. The effects of various formulation factors (sodium alginate concentration, calcium chloride concentration, calcium chloride exposure time, gelling bath time maintaining, and extract concentration) on the efficiency of extract loading were investigated. The formulation containing an extract of 1 g pomegranate peels in 100 mL distilled water encapsulated with 3 % of sodium alginate cured in 0.05 M calcium chloride for 20 minutes and kept in a gelling bath for 15 minutes was chosen as the best formula regarding the loading efficiency. These optimized conditions allowed the encapsulation of 43.90% of total extracted polyphenols and 46.34 % of total extracted proanthocyanidins. Microencapsulation of pomegranate peels' extract in calcium alginate beads is a promising technique for pharmaceutical and food supplementation with natural antioxidants.
Collapse
Affiliation(s)
- Wissam Zam
- University of Aleppo, Syrian Arab Republic
| | | | | | | |
Collapse
|
28
|
Ma T, Tan MS, Yu JT, Tan L. Resveratrol as a therapeutic agent for Alzheimer's disease. BIOMED RESEARCH INTERNATIONAL 2014; 2014:350516. [PMID: 25525597 PMCID: PMC4261550 DOI: 10.1155/2014/350516] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 08/16/2014] [Accepted: 09/07/2014] [Indexed: 12/22/2022]
Abstract
Alzheimer's disease (AD) is the most common cause of dementia, but there is no effective therapy till now. The pathogenic mechanisms of AD are considerably complex, including Aβ accumulation, tau protein phosphorylation, oxidative stress, and inflammation. Exactly, resveratrol, a polyphenol in red wine and many plants, is indicated to show the neuroprotective effect on mechanisms mostly above. Recent years, there are numerous researches about resveratrol acting on AD in many models, both in vitro and in vivo. However, the effects of resveratrol are limited by its pool bioavailability; therefore researchers have been trying a variety of methods to improve the efficiency. This review summarizes the recent studies in cell cultures and animal models, mainly discusses the molecular mechanisms of the neuroprotective effects of resveratrol, and thus investigates the therapeutic potential in AD.
Collapse
Affiliation(s)
- Teng Ma
- Department of Neurology, Qingdao Hiser Hospital, School of Medicine, Qingdao University, Qingdao 266034, China
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, No. 5 Donghai Middle Road, Qingdao 266071, China
| | - Meng-Shan Tan
- Department of Neurology, Qingdao Municipal Hospital, College of Medicine and Pharmaceutics, Ocean University of China, Qingdao 266003, China
| | - Jin-Tai Yu
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, No. 5 Donghai Middle Road, Qingdao 266071, China
- Department of Neurology, Qingdao Municipal Hospital, College of Medicine and Pharmaceutics, Ocean University of China, Qingdao 266003, China
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, No. 5 Donghai Middle Road, Qingdao 266071, China
- Department of Neurology, Qingdao Municipal Hospital, College of Medicine and Pharmaceutics, Ocean University of China, Qingdao 266003, China
| |
Collapse
|
29
|
Dong Y, Zhou Z, Ding H, Zhang S. Preparation and properties of a pH sensitive carrier based on three kinds of polymer blend to control the release of 5-amino salicylic acid. Pharm Dev Technol 2014; 19:960-7. [PMID: 24320757 DOI: 10.3109/10837450.2013.846372] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT High concentration of 5-amino salicylic acid (5-ASA) in the distal ileum and colon is necessary for the treatment of inflammatory bowel disease (IBD). The control of small molecules, drugs, released from a polymeric matrix remains a great challenge. OBJECTIVE To study the preparation and properties of a pH-sensitive carrier for targeting delivery of 5-ASA. MATERIALS AND METHODS The carrier was prepared by ternary blends method based on polyvinyl alcohol (PVA), sodium alginate (SA) and polylactic acid. It was characterized by infrared spectrometry and scanning electronic microscopy. The adsorption and release of 5-ASA in different pH media were investigated. RESULTS We found out the best ratio of the materials for synthetic carrier. The vector exhibited good performance by the controlled release of the target drug experiment. The adsorption capacity of the carrier for 5-ASA was 70.34% in phosphate buffer saline at pH 1.00, and the release rate was 100.49% in phosphate buffer solution at pH 6.80. DISCUSSION AND CONCLUSION PVA is vector backbone of the carrier, and SA plays key role in its pH performance. It is a promising material to effectively deliver 5-ASA to the specific sites of IBD.
Collapse
Affiliation(s)
- Yuming Dong
- Jiangsu Provincial Key Laboratory for Interventional Medical Devices, Huaiyin Institute of Technology , Huaian, Jiangsu Province , P.R. China
| | | | | | | |
Collapse
|
30
|
Shape, optimization and in vitro evaluation of colon-specific multi-particulate system based on low-methoxy amidated pectin and polycarbophil. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2014. [DOI: 10.1007/s40005-014-0131-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
31
|
Cho AR, Chun YG, Kim BK, Park DJ. Preparation of Chitosan-TPP Microspheres as Resveratrol Carriers. J Food Sci 2014; 79:E568-76. [DOI: 10.1111/1750-3841.12395] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 01/13/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Ah Ra Cho
- Korea Food Research Instit, 1201-62 Anyangpangyo-Ro, Baekhyun-Dong, Bundang-Ku, Songnam-Si, Kyunggi-Do 463-746; Republic of Korea
| | - Yong Gi Chun
- Korea Food Research Instit, 1201-62 Anyangpangyo-Ro, Baekhyun-Dong, Bundang-Ku, Songnam-Si, Kyunggi-Do 463-746; Republic of Korea
| | - Bum Keun Kim
- Korea Food Research Instit, 1201-62 Anyangpangyo-Ro, Baekhyun-Dong, Bundang-Ku, Songnam-Si, Kyunggi-Do 463-746; Republic of Korea
| | - Dong June Park
- Korea Food Research Instit, 1201-62 Anyangpangyo-Ro, Baekhyun-Dong, Bundang-Ku, Songnam-Si, Kyunggi-Do 463-746; Republic of Korea
| |
Collapse
|
32
|
Francioso A, Mastromarino P, Restignoli R, Boffi A, d'Erme M, Mosca L. Improved stability of trans-resveratrol in aqueous solutions by carboxymethylated (1,3/1,6)-β-D-glucan. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:1520-1525. [PMID: 24467639 DOI: 10.1021/jf404155e] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Resveratrol is a polyphenolic compound endowed with multiple health benefits. However, its limited bioavailability and poor stability in solution hamper its use in pharmaceutical applications. Due to its low solubility in water, solvents such as ethanol and dimethyl sulfoxide are often used to dissolve resveratrol. However, these solvents have adverse effects on cultured cells or in vivo. The purpose of this study was to develop an aqueous liquid formulation of resveratrol in combination with a modified glucan, the carboxymethylated (1,3/1,6)-β-D-glucan (CM-glucan). The proposed liquid formulation conferred stability to resveratrol without affecting its antioxidant capability. Shelf-life measurements revealed that resveratrol in aqueous solution is degraded within a few weeks, due to spontaneous oxidation. In contrast, the combination with CM-glucan matrix exerted a strong stabilizing effect in aqueous medium and increased resveratrol stability up to 12 months at 25 °C. These data provide evidence of a stable resveratrol formulation in liquid suspensions and support the possible development of pharmaceutical applications of this association in biopharmaceutics and drug delivery.
Collapse
Affiliation(s)
- Antonio Francioso
- Department of Biochemical Sciences and ‡Department of Public Health and Infectious Diseases, Section of Microbiology, Sapienza University , p.le Aldo Moro 5, 00185 Roma, Italy
| | | | | | | | | | | |
Collapse
|
33
|
Raut NS, Deshmukh PR, Umekar MJ, Kotagale NR. Zinc cross-linked hydroxamated alginates for pulsed drug release. Int J Pharm Investig 2013; 3:194-202. [PMID: 24350039 PMCID: PMC3853759 DOI: 10.4103/2230-973x.121292] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Alginates can be tailored chemically to improve solubility, physicochemical, and biological properties and its complexation with metal ion is useful for controlling the drug release. MATERIALS AND METHODS Synthesized N,O-dimethyl, N-methyl, or N-Benzyl hydroxylamine derivatives of sodium alginate were subsequently complexed with zinc to form beads. Hydroxamation of sodium alginate was confirmed by Fourier transform infra-red spectroscopy (FTIR) and differential scanning calorimetry (DSC). RESULTS The synthesized polymeric material exhibited reduced aqueous, HCl and NaOH solubility. The hydroxamated derivatives demonstrated pulsed release where change in pH of the dissolution medium stimulated the atenolol release. CONCLUSION Atenolol loaded Zn cross-linked polymeric beads demonstrated the sustained the plasma drug levels with increased half-life. Although the synthesized derivatives greatly altered the aqueous solubility of sodium alginate, no significant differences in in vitro and in vivo atenolol release behavior amongst the N,O-dimethyl, N-methyl, or N-Benzyl hydroxylamine derivatives of sodium alginate were observed.
Collapse
Affiliation(s)
- Neha S Raut
- Department of Pharmaceutics, Smt. Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur, Maharashtra, India
| | - Prasad R Deshmukh
- Department of Pharmaceutics, Smt. Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur, Maharashtra, India
| | - Milind J Umekar
- Department of Pharmaceutics, Smt. Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur, Maharashtra, India
| | - Nandkishor R Kotagale
- Department of Pharmaceutics, Smt. Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur, Maharashtra, India
| |
Collapse
|
34
|
Alvarez-Lorenzo C, Blanco-Fernandez B, Puga AM, Concheiro A. Crosslinked ionic polysaccharides for stimuli-sensitive drug delivery. Adv Drug Deliv Rev 2013; 65:1148-71. [PMID: 23639519 DOI: 10.1016/j.addr.2013.04.016] [Citation(s) in RCA: 302] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Revised: 04/15/2013] [Accepted: 04/22/2013] [Indexed: 12/13/2022]
Abstract
Polysaccharides are gaining increasing attention as components of stimuli-responsive drug delivery systems, particularly since they can be obtained in a well characterized and reproducible way from the natural sources. Ionic polysaccharides can be readily crosslinked to render hydrogel networks sensitive to a variety of internal and external variables, and thus suitable for switching drug release on-off through diverse mechanisms. Hybrids, composites and grafted polymers can reinforce the responsiveness and widen the range of stimuli to which polysaccharide-based systems can respond. This review analyzes the state of the art of crosslinked ionic polysaccharides as components of delivery systems that can regulate drug release as a function of changes in pH, ion nature and concentration, electric and magnetic field intensity, light wavelength, temperature, redox potential, and certain molecules (enzymes, illness markers, and so on). Examples of specific applications are provided. The information compiled demonstrates that crosslinked networks of ionic polysaccharides are suitable building blocks for developing advanced externally activated and feed-back modulated drug delivery systems.
Collapse
Affiliation(s)
- Carmen Alvarez-Lorenzo
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782-Santiago de Compostela, Spain
| | | | | | | |
Collapse
|
35
|
Neves AR, Lúcio M, Martins S, Lima JLC, Reis S. Novel resveratrol nanodelivery systems based on lipid nanoparticles to enhance its oral bioavailability. Int J Nanomedicine 2013; 8:177-87. [PMID: 23326193 PMCID: PMC3544347 DOI: 10.2147/ijn.s37840] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
INTRODUCTION Resveratrol is a polyphenol found in grapes and red wines. Interest in this polyphenol has increased due to its pharmacological cardio- and neuroprotective, chemopreventive, and antiaging effects, among others. Nevertheless, its pharmacokinetic properties are less favorable, since the compound has poor bioavailability, low water solubility, and is chemically unstable. To overcome these problems, we developed two novel resveratrol nanodelivery systems based on lipid nanoparticles to enhance resveratrol's oral bioavailability for further use in medicines, supplements, and nutraceuticals. METHODS AND MATERIALS Solid lipid nanoparticles (SLNs) and nanostructured lipid carriers (NLCs) loaded with resveratrol were successfully produced by a modified hot homogenization technique. These were completely characterized to evaluate the quality of the developed resveratrol-loaded nanoparticles. RESULTS Cryo-scanning electron microscopy morphology studies showed spherical and uniform nanoparticles with a smooth surface. An average resveratrol entrapment efficiency of ~70% was obtained for both SLNs and NLCs. Dynamic light scattering measurements gave a Z-average of 150-250 nm, polydispersity index of ~0.2, and a highly negative zeta potential of around -30 mV with no statistically significant differences in the presence of resveratrol. These characteristics remained unchanged for at least 2 months, suggesting good stability. Differential scanning calorimetry studies confirmed the solid state of the SLNs and NLCs at both room and body temperatures. The NLCs had a less ordered crystalline structure conferred by the inclusion of the liquid lipid, since they had lower values for phase transition temperature, melting enthalpy, and the recrystallization index. The presence of resveratrol induced a disorder in the crystal structure of the nanoparticles, suggesting a favoring of its entrapment. The in vitro release studies on conditions of storage showed a negligible resveratrol release over several hours for both nanosystems and the in vitro simulation of gastrointestinal transit showed that the resveratrol remained mostly associated with the lipid nanoparticles after their incubation in digestive fluids. CONCLUSION Both nanodelivery systems can be considered suitable carriers for oral administration, conferring protection to the incorporated resveratrol and allowing a controlled release after uptake.
Collapse
Affiliation(s)
- Ana Rute Neves
- REQUIMTE, Chemistry Department, Faculty of Pharmacy, University of Porto, Portugal
| | | | | | | | | |
Collapse
|
36
|
Karthikeyan S, Rajendra Prasad N, Ganamani A, Balamurugan E. Anticancer activity of resveratrol-loaded gelatin nanoparticles on NCI-H460 non-small cell lung cancer cells. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.bionut.2012.10.009] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
37
|
Development of a novel probe sonication assisted enhanced loading of 5-FU in SPION encapsulated pectin nanocarriers for magnetic targeted drug delivery system. Eur J Pharm Biopharm 2012; 82:58-65. [DOI: 10.1016/j.ejpb.2012.05.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Accepted: 05/15/2012] [Indexed: 01/20/2023]
|
38
|
Dutta RK, Sahu S. Development of oxaliplatin encapsulated in magnetic nanocarriers of pectin as a potential targeted drug delivery for cancer therapy. RESULTS IN PHARMA SCIENCES 2012; 2:38-45. [PMID: 25755993 PMCID: PMC4210274 DOI: 10.1016/j.rinphs.2012.05.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Accepted: 05/15/2012] [Indexed: 11/20/2022]
Abstract
Superparamagnetic iron oxide nanoparticles (SPIONs) and oxaliplatin (OHP) were in-situ encapsulated in pectin cross-linked with Ca(2+) forming 100-200 nm sized magnetically functionalized pectin nanocarriers, referred here as MP-OHP nanocarriers. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) studies revealed formation of spherical nanostructures. The magnetic measurements by vibration sample magnetometer (VSM) revealed high saturation magnetization (M s=45.65 emu/g). The superparamagnetic property of MP-OHP was confirmed from the blocking temperature (T B) determined from field cooled and zero field cooled magnetization, measured by superconducting quantum unit interference device (SQUID) magnetometry. The stability of the aqueous dispersion of MP-OHP nanocarriers was confirmed from its high zeta potential (-30.5 mV). The drug encapsulation efficiency (55.2±4.8% w/w) and the drug loading content (0.10±0.04 wt%) in MP-OHP nanocarriers were determined from corresponding platinum contents in OHP and MP-OHP batches measured by inductively coupled plasma mass spectrometry (ICPMS). These nanocarriers exhibited a sustained release of OHP in phosphate buffer solution maintained at pH 5.5 and 7.4, where the drug release profile satisfied a combination of diffusion and swelling controlled mechanism. The cytotoxicity effect of MP-OHP nanocarriers was studied on MIA-PaCa-2 (pancreas) cancer cell line, where the GI50 values were more than 5 mg/mL and it exhibited 10 folds higher cytoxicity than the equivalent concentration of free drug.
Collapse
Affiliation(s)
- Raj Kumar Dutta
- Analytical Chemistry Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | | |
Collapse
|
39
|
Mendes JBE, Riekes MK, de Oliveira VM, Michel MD, Stulzer HK, Khalil NM, Zawadzki SF, Mainardes RM, Farago PV. PHBV/PCL microparticles for controlled release of resveratrol: physicochemical characterization, antioxidant potential, and effect on hemolysis of human erythrocytes. ScientificWorldJournal 2012; 2012:542937. [PMID: 22666135 PMCID: PMC3361330 DOI: 10.1100/2012/542937] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Accepted: 11/30/2011] [Indexed: 11/17/2022] Open
Abstract
Microparticles of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and poly(ε-caprolactone) (PCL) containing resveratrol were successfully prepared by simple emulsion/solvent evaporation. All formulations showed suitable encapsulation efficiency values higher than 80%. PHBV microparticles revealed spherical shape with rough surface and presence of pores. PCL microparticles were spherically shaped with smooth surface. Fourier-transformed infrared spectra demonstrated no chemical bond between resveratrol and polymers. X-ray powder diffraction patterns and differential scanning calorimetry analyses indicated that microencapsulation led to drug amorphization. These PHBV/PCL microparticles delayed the dissolution profile of resveratrol. Release profiles were better fitted to biexponential equation. The hypochlorous-acid-scavenging activity and 2,2-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) radical cation discoloration assay confirmed that the antioxidant activity of PHBV/PCL microparticles was kept, but was dependent on the microparticle morphology and dissolution profile. Resveratrol-loaded PHBV/PCL microparticles showed no cytotoxic effect on red blood cells.
Collapse
Affiliation(s)
- Jessica Bitencourt Emilio Mendes
- Postgraduate Program in Pharmaceutical Sciences, Department of Pharmaceutical Sciences, State University of Ponta Grossa, 4748 Carlos Cavalcanti Avenue, 84030-900 Ponta Grossa, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Sharma R, Ahuja M, Kaur H. Thiolated pectin nanoparticles: Preparation, characterization and ex vivo corneal permeation study. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.09.065] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
41
|
Encapsulation of natural polyphenolic compounds; a review. Pharmaceutics 2011; 3:793-829. [PMID: 24309309 PMCID: PMC3857059 DOI: 10.3390/pharmaceutics3040793] [Citation(s) in RCA: 455] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 10/18/2011] [Accepted: 10/27/2011] [Indexed: 12/16/2022] Open
Abstract
Natural polyphenols are valuable compounds possessing scavenging properties towards radical oxygen species, and complexing properties towards proteins. These abilities make polyphenols interesting for the treatment of various diseases like inflammation or cancer, but also for anti-ageing purposes in cosmetic formulations, or for nutraceutical applications. Unfortunately, these properties are also responsible for a lack in long-term stability, making these natural compounds very sensitive to light and heat. Moreover, polyphenols often present a poor biodisponibility mainly due to low water solubility. Lastly, many of these molecules possess a very astringent and bitter taste, which limits their use in food or in oral medications. To circumvent these drawbacks, delivery systems have been developed, and among them, encapsulation would appear to be a promising approach. Many encapsulation methods are described in the literature, among which some have been successfully applied to plant polyphenols. In this review, after a general presentation of the large chemical family of plant polyphenols and of their main chemical and biological properties, encapsulation processes applied to polyphenols are classified into physical, physico-chemical, chemical methods, and other connected stabilization methods. After a brief description of each encapsulation process, their applications to polyphenol encapsulation for pharmaceutical, food or cosmetological purposes are presented.
Collapse
|
42
|
Amri A, Chaumeil JC, Sfar S, Charrueau C. Administration of resveratrol: What formulation solutions to bioavailability limitations? J Control Release 2011; 158:182-93. [PMID: 21978644 DOI: 10.1016/j.jconrel.2011.09.083] [Citation(s) in RCA: 426] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 09/22/2011] [Indexed: 10/24/2022]
Abstract
Resveratrol (3,5,4'-trihydroxystilbene), a naturally occurring polyphenol, has attracted considerable interest for its beneficial potentials for human health, which include anti-oxidant, anti-inflammatory, cardioprotective and anti-tumor activities. However, the in vivo biological effects of resveratrol appear strongly limited by its low bioavailability, which is a barrier to the development of therapeutic applications. In this context, an increasing number of recent studies have aimed at designing novel resveratrol formulations to overcome its poor solubility, limited stability, high metabolization and weak bioavailability. This review outlines physicochemical and pharmacokinetic limitations to resveratrol bioavailability, describes formulations tested for resveratrol administration, controlled release and targeting, and identifies future opportunities for resveratrol delivery.
Collapse
Affiliation(s)
- A Amri
- Laboratoire de Pharmacie Galénique, EA4466, Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques, Paris, France
| | | | | | | |
Collapse
|
43
|
Zhang L, Cao F, Ding B, Li Q, Xi Y, Zhai G. Eudragit® S100 coated calcium pectinate microspheres of curcumin for colon targeting. J Microencapsul 2011; 28:659-67. [PMID: 21824069 DOI: 10.3109/02652048.2011.604436] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Lin Zhang
- Department of Pharmaceutics, College of Pharmacy, Shandong University,
Jinan 250012, China
| | - Fengliang Cao
- Department of Pharmacy, Shandong University Hospital,
Jinan 250012, China
| | - Buyun Ding
- Department of Pharmaceutics, College of Pharmacy, Shandong University,
Jinan 250012, China
| | - Qilu Li
- Department of Pharmacy, Shandong University Hospital,
Jinan 250012, China
| | - Yanwei Xi
- Department of Pharmaceutics, College of Pharmacy, Shandong University,
Jinan 250012, China
| | - Guangxi Zhai
- Department of Pharmaceutics, College of Pharmacy, Shandong University,
Jinan 250012, China
| |
Collapse
|
44
|
|
45
|
Das S, Chaudhury A, Ng KY. Polyethyleneimine-modified pectin beads for colon-specific drug delivery:In vitroandin vivoimplications. J Microencapsul 2011; 28:268-79. [DOI: 10.3109/02652048.2011.559284] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
46
|
Das S, Chaudhury A, Ng KY. Preparation and evaluation of zinc–pectin–chitosan composite particles for drug delivery to the colon: Role of chitosan in modifying in vitro and in vivo drug release. Int J Pharm 2011; 406:11-20. [DOI: 10.1016/j.ijpharm.2010.12.015] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Revised: 11/24/2010] [Accepted: 12/13/2010] [Indexed: 10/18/2022]
|
47
|
Das S, Ng KY. Impact of glutaraldehyde on in vivo colon-specific release of resveratrol from biodegradable pectin-based formulation. J Pharm Sci 2011; 99:4903-16. [PMID: 20572052 DOI: 10.1002/jps.22212] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Despite potential therapeutic efficacy of resveratrol on colitis and colorectal cancer, rapid absorption and metabolism at the upper gastro-intestinal (GI) tract prevent its clinical application. To overcome this, we attempted to develop colon-specific multi-particulate calcium-pectinate (Ca-pectinate) formulations of resveratrol. However, they were unable to prevent premature drug release at the upper GI tract. Thus, glutaraldehyde (Glu) was used for further cross-linking of the pectin chains. The formulation conditions and procedure were optimized from the in vitro drug release study. The optimized formulation was subjected to in vivo pharmacokinetic study in rats and compared with the unmodified Ca-pectinate and suspension formulation of resveratrol. Spherical particles (∼1 mm diameter) with high drug encapsulation were produced. Low cross-linking solution pH (1.5), minimum Glu concentration (2.5%) and cross-linking time (2 h) were crucial to exhibit colon-specific drug release. As Glu was added in the cross-linking solution, cross-linking between pectin chains and Glu occurred simultaneously during Ca-pectinate network formation, which appeared as a cost-effective formulation technique. Most importantly, the pharmacokinetic study demonstrated in vivo colon-specific drug release from the optimized formulation, while faster drug release was observed from the unmodified and suspension formulations. Hence, the developed formulation has potential to be used as colon-specific delivery system of resveratrol.
Collapse
Affiliation(s)
- Surajit Das
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Republic of Singapore.
| | | |
Collapse
|
48
|
Resveratrol-conjugated poly-ε-caprolactone facilitates in vitro mineralization and in vivo bone regeneration. Acta Biomater 2011; 7:751-8. [PMID: 20849988 DOI: 10.1016/j.actbio.2010.09.008] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2010] [Revised: 08/30/2010] [Accepted: 09/08/2010] [Indexed: 11/20/2022]
Abstract
Incorporation of osteoinductive factors in a suitable scaffold is considered a promising strategy for generating osteogenic biomaterials. Resveratrol is a polyphenol found in parts of certain plants, including nuts, berries and grapes. It is known to increase DNA synthesis and alkaline phosphatase (ALP) activity in osteoblasts and to prevent femoral bone loss in ovariectomized (OVX) rats. In the present study resveratrol was coupled through a hydrolysable covalent bond with the carboxylic acid groups in porous poly-ε-caprolactone (PCL) surface grafted with acrylic acid (AA). The osteogenic effect of this new scaffold was evaluated in mesenchymal cell culture and in the rat calvarial defect model. We found that the incorporation of resveratrol caused increased ALP activity of rat bone marrow stromal cells and enhanced mineralization of the cell-scaffold composites in vitro. After 8 weeks the calvarial defects implanted with resveratrol-conjugated PCL displayed a higher X-ray density than the defects implanted with control PCL. Bone-like structures, positively immunostained for bone sialoprotein, were shown to be more extensively formed in the resveratrol-conjugated PCL. These results show that incorporation of resveratrol into the AA-functionalized porous PCL scaffold led to a significant increase in osteogenesis.
Collapse
|
49
|
Jacquemin G, Shirley S, Micheau O. Combining naturally occurring polyphenols with TNF-related apoptosis-inducing ligand: a promising approach to kill resistant cancer cells? Cell Mol Life Sci 2010; 67:3115-30. [PMID: 20508968 PMCID: PMC11115850 DOI: 10.1007/s00018-010-0407-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Revised: 04/16/2010] [Accepted: 05/11/2010] [Indexed: 12/13/2022]
Abstract
TNF-related apoptosis-inducing ligand (TRAIL) and its receptors are attractive targets for anticancer therapy owing to their ability to trigger apoptosis selectively in cancer cells but not in normal cells. To date, many combinatorial strategies, such as chemotherapy or radiotherapy, have given encouraging results for overcoming TRAIL resistance in preclinical models. In this review, we provide an overview of the molecular mechanisms underlying sensitization to TRAIL-induced apoptosis by polyphenols. These naturally occurring compounds can restore tumor cell sensitivity to TRAIL-induced cell death with no apparent toxicity towards normal cells. Both extrinsic and intrinsic pathways can be modulated by polyphenols, the activation of which largely depends on the cell type, the particular polyphenolic compound, and the conditions of treatment. The large variety of polyphenol cellular targets could prove useful in circumventing TRAIL resistance. The relevance of these combined treatments for cancer therapy is discussed in the light of recent preclinical studies.
Collapse
|
50
|
Das S, Ng KY, Ho PC. Design of a pectin-based microparticle formulation using zinc ions as the cross-linking agent and glutaraldehyde as the hardening agent for colonic-specific delivery of resveratrol:In vitroandin vivoevaluations. J Drug Target 2010; 19:446-57. [DOI: 10.3109/1061186x.2010.504272] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|