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Xiao C, Li G, Li X, Wang D, Wu Y, Sun M, Huang J, Si L. A topical thermosensitive hydrogel system with cyclosporine A PEG-PCL micelles alleviates ulcerative colitis induced by TNBS in mice. Drug Deliv Transl Res 2023; 13:2447-2462. [PMID: 37060530 DOI: 10.1007/s13346-023-01317-8] [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] [Accepted: 02/20/2023] [Indexed: 04/16/2023]
Abstract
Ulcerative colitis (UC) is an idiopathic, chronic, relapsing disease. In most cases, only the distal colon is affected, and the colonic stasis or fast colonic transit through the inflamed colon usually results in reduced exposure of the distal inflamed colon. Although the immunosuppressant cyclosporine A (CsA) has been used in patients with severe colitis who do not respond to corticosteroids, the clinical application of CsA remains limited due to the systemic toxicities and insufficient accumulation at the site of action for the intravenous and oral routes. In this study, we loaded CsA into the amphipathic poly(ethylene glycol)-poly(ε-caprolactone) (PEG-PCL) micelles and then embedded them in hydrogels consisting of chitosan, poloxamer 188, and poloxamer 407 to construct a thermosensitive and mucoadhesive hydrogel drug delivery system (PLCP). The PLCP presented a high drug-loading capacity and showed a stable and rapid gelation rate after rectal administration into the body. Compared to CsA-loaded micelles and Sandimmun (Neoral®), the developed thermosensitive gel exhibited prolonged retention on the inflamed colon, as seen from in vitro adhesion and in vivo distribution experiments. It also fast mitigated colitis symptoms in TNBS-treated mice by regulating the expression levels of proinflammatory cytokines (TNF-α, IL-1β, COX-2, and iNOS2), anti-inflammatory cytokines (IL-10, Nrf2, NQO1, and HO-1), and other relevant biochemical factors. Our results suggested that CsA-loaded micelle thermal hydrogel system could be a promising strategy by enhancing the retention in the diseased colon and promoting the relief and recovery of UC.
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Affiliation(s)
- Chuyao Xiao
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Genyun Li
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xiaoyue Li
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Dan Wang
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ya Wu
- Department of Vascular Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Minghui Sun
- Department of Pharmacy, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jiangeng Huang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Luqin Si
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Xun W, Ji M, Ma Z, Deng T, Yang W, Hou G, Shi L, Cao T. Dietary emodin alleviates lipopolysaccharide-induced intestinal mucosal barrier injury by regulating gut microbiota in piglets. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2023; 14:152-162. [PMID: 37455790 PMCID: PMC10344667 DOI: 10.1016/j.aninu.2023.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 04/06/2023] [Accepted: 05/10/2023] [Indexed: 07/18/2023]
Abstract
This study was to determine the effects of dietary emodin (ED) on the intestinal mucosal barrier, nuclear factor kappa-B (NF-κB) pathways, and gut microbial flora in lipopolysaccharide (LPS)-induced piglets. Twenty-four weaned piglets were chosen and 4 treatments were created by randomly distributing piglets into CON, ED, LPS, and ED_LPS groups. Experiments were done in a 2 × 2 factorial arrangement and maintained for 21 d. Dietary treatment (a basal diet or 300 mg/kg ED) and immunological challenge (LPS or sterile saline) were 2 major factors. Intraperitoneal injections of LPS or sterilized saline were given to piglets on d 21. Six hours after the LPS challenge, all piglets were euthanized for sample collection and analysis. The results showed that piglets of the ED_LPS group had higher (P < 0.05) villus height to crypt depth ratio (VCR), and lower (P < 0.05) plasma D-lactate and diamine oxidase (DAO) than the LPS group. Furthermore, ED inhibited (P < 0.05) the decrease of glutathione peroxidase (GSH-Px) and catalase (CAT) activities and increase of malonaldehyde level (P < 0.05) in jejunal mucosa induced by LPS. The mRNA levels of pro-inflammatory cytokine genes (IL-6, IL-1β, and TNF-α) were significantly reduced (P < 0.05), and the mRNA levels of antioxidant enzyme genes (GPX-1, SOD2 and CAT), as well as protein and mRNA levels of tight junction proteins (occludin, claudin-1, and ZO-1), were also significantly increased (P < 0.05) by ED addition in LPS-induced piglets. Meanwhile, ED supplementation significantly decreased the LPS-induced protein levels of cyclooxygenase-2 and phosphorylation levels of NF-κB p65 and IκBα in jejunal mucosa. Emodin had a significant effect on the composition of gut microbial flora at various taxonomic positions as indicated by 16S RNA sequencing. The acetic acid, isobutyric acid, valeric acid, and isovaleric acid concentrations in the cecum were also increased by ED addition in pigs (P < 0.05). Furthermore, the correlation analysis revealed that some intestinal microbiota had a potential relationship with jejunal VCR, plasma D-lactate and DAO, jejunal mucosa GSH-Px and CAT activity, and cecal short-chain fatty acid concentration. These data suggest that ED is effective in alleviating LPS-induced intestinal mucosal barrier injury by modulating gut microbiota in piglets.
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Affiliation(s)
- Wenjuan Xun
- College of Animal Science and Technology, Hainan University, Haikou, 570228, China
| | - Mengyao Ji
- College of Animal Science and Technology, Hainan University, Haikou, 570228, China
| | - Zhonghua Ma
- College of Animal Science and Technology, Hainan University, Haikou, 570228, China
| | - Tanjie Deng
- College of Animal Science and Technology, Hainan University, Haikou, 570228, China
| | - Wen Yang
- College of Animal Science and Technology, Hainan University, Haikou, 570228, China
| | - Guanyu Hou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571100, China
| | - Liguang Shi
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571100, China
| | - Ting Cao
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571100, China
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Wen Z, Kang L, Fu H, Zhu S, Ye X, Yang X, Zhang S, Hu J, Li X, Chen L, Hu Y, Yang X. Oral delivery of porous starch-loaded bilayer microgels for controlled drug delivery and treatment of ulcerative colitis. Carbohydr Polym 2023; 314:120887. [PMID: 37173037 DOI: 10.1016/j.carbpol.2023.120887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/16/2023] [Accepted: 04/03/2023] [Indexed: 05/15/2023]
Abstract
We prepared one type of bilayer microgels for oral administration with three effects: pH responsiveness, time lag, and colon enzyme degradation. Combined with the dual biological effects of curcumin (Cur) for reducing inflammation and promoting repair of colonic mucosal injury, targeted colonic localization and release of Cur according to the colonic microenvironment were enhanced. The inner core, derived from guar gum and low-methoxyl pectin, afforded colonic adhesion and degradation behavior; the outer layer, modified by alginate and chitosan via polyelectrolyte interaction, achieved colonic localization. The porous starch (PS)-mediated strong adsorption allowed Cur loading in inner core to achieve a multifunctional delivery system. In vitro, the formulations exhibited good bioresponses at different pH conditions, potentially delaying Cur release in the upper gastrointestinal tract. In vivo, dextran sulfate sodium-induced ulcerative colitis (UC) symptoms were significantly alleviated after oral administration, accompanied by reduced levels of inflammatory factors. The formulations facilitated colonic delivery, allowing Cur accumulation in colonic tissue. Moreover, the formulations could alter gut microbiota composition in mice. During Cur delivery, each formulation increased species richness, decreased pathogenic bacterial content, and afforded synergistic effects against UC. These PS-loaded bilayer microgels, exhibiting excellent biocompatibility, multi-bioresponsiveness, and colon targeting, could be beneficial in UC therapy, allowing development into a novel oral formulation.
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Affiliation(s)
- Zhijie Wen
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China
| | - Li Kang
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China
| | - Hudie Fu
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China
| | - Shengpeng Zhu
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China
| | - Xuexin Ye
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China
| | - Xuedan Yang
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China
| | - Shangwen Zhang
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China
| | - Jie Hu
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China
| | - Xiaojun Li
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China
| | - Lvyi Chen
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China
| | - Yan Hu
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China.
| | - Xinzhou Yang
- School of Pharmaceutical Science, South-Central MinZu University, Wuhan 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central MinZu University, Wuhan 430074, PR China; Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, South-Central MinZu University, Wuhan 430074, PR China.
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Sharifi-Rad J, Herrera-Bravo J, Kamiloglu S, Petroni K, Mishra AP, Monserrat-Mesquida M, Sureda A, Martorell M, Aidarbekovna DS, Yessimsiitova Z, Ydyrys A, Hano C, Calina D, Cho WC. Recent advances in the therapeutic potential of emodin for human health. Biomed Pharmacother 2022; 154:113555. [PMID: 36027610 DOI: 10.1016/j.biopha.2022.113555] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/04/2022] [Accepted: 08/14/2022] [Indexed: 01/01/2023] Open
Abstract
Emodin (1,3,8-trihydroxy-6-methylanthraquinone) is a bioactive compound, a natural anthraquinone aglycone, present mainly in herbaceous species of the families Fabaceae, Polygonaceae and Rhamnaceae, with a physiological role in protection against abiotic stress in vegetative tissues. Emodin is mainly used in traditional Chinese medicine to treat sore throats, carbuncles, sores, blood stasis, and damp-heat jaundice. Pharmacological research in the last decade has revealed other potential therapeutic applications such as anticancer, neuroprotective, antidiabetic, antioxidant and anti-inflammatory. The present study aimed to summarize recent studies on bioavailability, preclinical pharmacological effects with evidence of molecular mechanisms, clinical trials and clinical pitfalls, respectively the therapeutic limitations of emodin. For this purpose, extensive searches were performed using the PubMed/Medline, Scopus, Google scholar, TRIP database, Springer link, Wiley and SciFinder databases as a search engines. The in vitro and in vivo studies included in this updated review highlighted the signaling pathways and molecular mechanisms of emodin. Because its bioavailability is low, there are limitations in clinical therapeutic use. In conclusion, for an increase in pharmacotherapeutic efficacy, future studies with carrier molecules to the target, thus opening up new therapeutic perspectives.
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Affiliation(s)
| | - Jesús Herrera-Bravo
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Chile; Center of Molecular Biology and Pharmacogenetics, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
| | - Senem Kamiloglu
- Department of Food Engineering, Faculty of Agriculture, Bursa Uludag University, 16059 Gorukle, Bursa, Turkey; Science and Technology Application and Research Center (BITUAM), Bursa Uludag University, 16059 Gorukle, Bursa, Turkey
| | - Katia Petroni
- Dipartimento di Bioscienze, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy.
| | - Abhay Prakash Mishra
- Department of Pharmaceutical Chemistry, H.N.B. Garhwal (A Central) University, Srinagar Garhwal, Uttarakhand 246174, India.
| | - Margalida Monserrat-Mesquida
- Research Group in Community Nutrition and Oxidative Stress, University Research Institute of Health and Health Research Institute of Balearic Islands (IdISBa), University of the Balearic Islands-IUNICS, 07122 Palma de Mallorca, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain.
| | - Antoni Sureda
- Research Group in Community Nutrition and Oxidative Stress, University Research Institute of Health and Health Research Institute of Balearic Islands (IdISBa), University of the Balearic Islands-IUNICS, 07122 Palma de Mallorca, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain.
| | - Miquel Martorell
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Chile; Department of Nutrition and Dietetics, Faculty of Pharmacy, and Centre for Healthy Living, University of Concepción, 4070386 Concepción, Chile.
| | - Dossymbetova Symbat Aidarbekovna
- Almaty Tecnological University, Kazakh-Russian Medical University, Almaty 050012, str. Tole bi 100, Str. Torekulova 71, Kazakhstan.
| | - Zura Yessimsiitova
- Department of Biodiversity and Bioresource, Al-Farabi Kazakh National University, al-Farabi av. 71, 050040 Almaty, Kazakhstan.
| | - Alibek Ydyrys
- Biomedical Research Centre, Al-Farabi Kazakh National University, al-Farabi av. 71, 050040 Almaty, Kazakhstan.
| | - Christophe Hano
- Department of Biological Chemistry, University of Orleans, Eure et Loir Campus, 28000 Chartres, France.
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania.
| | - William C Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong.
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Luo S, He J, Huang S, Wang X, Su Y, Li Y, Chen Y, Yang G, Huang B, Guo S, Zhou L, Luo X. Emodin targeting the colonic metabolism via PPARγ alleviates UC by inhibiting facultative anaerobe. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 104:154106. [PMID: 35728384 DOI: 10.1016/j.phymed.2022.154106] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 04/01/2022] [Accepted: 04/14/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Emodin is an active ingredient of traditional Chinese medicine Rheum palmatum L. and Polygonum cuspidatum, which possesses anti-inflammatory and intestinal mucosal protection effects. Our previous study found that emodin significantly alleviated ulcerative colitis induced by sodium dextran sulfate (DSS). In this study, we found the underlying mechanism of emodin on ulcerative colitis (UC). PURPOSE We aimed to further explore the mechanism of emodin in the treatment of ulcerative colitis from the perspective of metabolism and intestinal flora. METHODS Ulcerative colitis was induced by 3% sodium dextran sulfate (DSS) on mice, and the mice were respectively treated with mesalazine, rosiglitazone, emodin, and emodin combined with GW9662 (PPARγ inhibitor) simultaneously. Weight changes, the disease activity index (DAI), colonic length, and pathologic changes in colon were used to evaluate the efficacy of emodin. LC-MS/MS was performed for metabolomics analysis of colon. In addition, intestinal flora was assessed using 16S rDNA sequencing. A vector-based short hairpin RNA (shRNA) method was used to silence PPARγ gene expression in Caco-2 cells. RESULTS Emodin binds to the active site of PPARγ protein and forms hydrogen bond interaction with ARG288 and CYS285 amino acids. Furthermore, Emodin significantly promotes the protein expression of PPARγ, while inhibiting iNOS and NF-kB p65 in UC mice, however, this effect is hardly shown when it is combined with GW9662 (the inhibitor of PPARγ). Meanwhile, emodin suppresses the expression of iNOS in Caco-2 cells induced with IFNγ and IL-22, but has no effect on its expression in shPPARγ-Caco-2 cells. In addition, through activating PPARγ signal pathway, emodin is capable of regulating colonic metabolism including oxidative phosphorylation and citrulline metabolism and effecting luminal availability of oxygen and nitrate. This promotes the recovery of anoxic environment of colon epithelial cells, which strains the growth and expansion of Enterobacteriaceae. CONCLUSION The mechanism of Emodin in the treatment of ulcerative colitis relies on its regulation of PPARγ signal pathway, which could modulate colonic metabolism and restore intestinal homeostasis.
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Affiliation(s)
- Shuang Luo
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China; The fourth Clinical Medical College of Guangzhou University of Chinese Medicine, China
| | - Jinrong He
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Shaowei Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Xiaojing Wang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Yulin Su
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Yanyang Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Yanping Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Guanghua Yang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China
| | - Bin Huang
- The fourth Clinical Medical College of Guangzhou University of Chinese Medicine, China
| | - Shaoju Guo
- The fourth Clinical Medical College of Guangzhou University of Chinese Medicine, China
| | - Lian Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China.
| | - Xia Luo
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Room C206, Pharmaceutical building, No. 232 Outer Ring Road, Panyu District, Guangzhou City, Guang Dong Province, China.
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Pharmacological Effects of Polyphenol Phytochemicals on the Intestinal Inflammation via Targeting TLR4/NF-κB Signaling Pathway. Int J Mol Sci 2022; 23:ijms23136939. [PMID: 35805952 PMCID: PMC9266441 DOI: 10.3390/ijms23136939] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 02/05/2023] Open
Abstract
TLR4/NF-κB is a key inflammatory signaling transduction pathway, closely involved in cell differentiation, proliferation, apoptosis, and pro-inflammatory response. Toll like receptor 4 (TLR4), the first mammalian TLR to be characterized, is the innate immune receptor that plays a key role in inflammatory signal transductions. Nuclear factor kappa B (NF-κB), the TLR4 downstream, is the key to accounting for the expression of multiple genes involved in inflammatory responses, such as pro-inflammatory cytokines. Inflammatory bowel disease (IBD) in humans is a chronic inflammatory disease with high incidence and prevalence worldwide. Targeting the TLR4/NF-κB signaling pathway might be an effective strategy to alleviate intestinal inflammation. Polyphenol phytochemicals have shown noticeable alleviative effects by acting on the TLR4/NF-κB signaling pathway in intestinal inflammation. This review summarizes the pharmacological effects of more than 20 kinds of polyphenols on intestinal inflammation via targeting the TLR4/NF-κB signaling pathway. We expected that polyphenol phytochemicals targeting the TLR4/NF-κB signaling pathway might be an effective approach to treat IBD in future clinical research applications.
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Miao Z, Gu M, Yan J, Lu L, Xu Y, Ning L, Xu Y. Dual-targeted colon-based integrated micelle drug delivery system for treatment of ulcerative colitis. J Drug Target 2022; 30:657-672. [PMID: 35285362 DOI: 10.1080/1061186x.2022.2052887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Zhiwei Miao
- Department of Gastroenterology, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang 215600, China
| | - Mingjia Gu
- Department of Nephrology, Changshu Hospital affiliated to Nanjing university of Chinese medicine, Changshu 215000, China
| | - Jing Yan
- Key Laboratory for Metabolic Diseases in Chinese Medicine, First Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing 210000, China
| | - Lidan Lu
- Department of gynaecology, Changshu Hospital affiliated to Nanjing university of Chinese medicine, Changshu 215000, China.
| | - Yan Xu
- Department of Gastroenterology, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang 215600, China
| | - Liqin Ning
- Department of Gastroenterology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Yi Xu
- Department of Gastroenterology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China
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Xie J, Liu L, Guo H, Bao Q, Hu P, Li H, Che H, Xie W. Orally administered melanin from Sepiapharaonis ink ameliorates depression-anxiety-like behaviors in DSS-induced colitis by mediating inflammation pathway and regulating apoptosis. Int Immunopharmacol 2022; 106:108625. [PMID: 35180627 DOI: 10.1016/j.intimp.2022.108625] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/12/2022] [Accepted: 02/10/2022] [Indexed: 12/20/2022]
Abstract
The effects of intestinal inflammation on the brain and behavior have received a lot of attention. Melanin (MSI) from Sepiapharaonis ink as an emerging functional food, it exhibited a significant protective effect on dextran sulfate sodium (DSS) induced colitis in previous study. In present study, C57BL/6J mice were free to drink 2.5% DSS solution to establish the colitis model. During the DSS treatment, mice were orally administrated with MSI once per day (75, 150, and 300 mg/kg, respectively). The results showed that MSI treatment ameliorated the depression and anxiety symptoms of colitis mice. Further mechanism studies indicated that MSI alleviated inflammatory response by adjusting cytokines TNF-α, IL-1β, IFN-γ, and IL-10, and proteins NLRP3/ASC/caspase-1 inflammasome), inhibited the activation of microglia, restored brain synaptic density, reduced oxidative stress (SOD, MDA) and regulated apoptosis (tunel staining, caspase-3). MSI could modulate depression-anxiety states by targeting inflammation, nerve tissue, oxidative stress and apoptosis. MSI administration could serve as an emerging blue food and nutrition strategy for the prevention of digestive tract inflammation and behavioral disorders.
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Affiliation(s)
- Jingwen Xie
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Shandong, Qingdao 266042, China
| | - Lin Liu
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Shandong, Qingdao 266042, China
| | - Hao Guo
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Shandong, Qingdao 266042, China
| | - Qi Bao
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Shandong, Qingdao 266042, China
| | - Penglong Hu
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Shandong, Qingdao 266042, China
| | - Hongyan Li
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Shandong, Qingdao 266042, China; Shandong Provincial Key Laboratory of Biochemical Engineering, Shandong, Qingdao 266042, China; Shandong Provincial Key Laboratory of Biochemical Engineering, Shandong, Qingdao 266042, China
| | - Hongxia Che
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Shandong, Qingdao 266042, China; Shandong Provincial Key Laboratory of Biochemical Engineering, Shandong, Qingdao 266042, China; Shandong Provincial Key Laboratory of Biochemical Engineering, Shandong, Qingdao 266042, China
| | - Wancui Xie
- College of Marine Science and Biological Engineering, Qingdao University of Science and Technology, Shandong, Qingdao 266042, China; Shandong Provincial Key Laboratory of Biochemical Engineering, Shandong, Qingdao 266042, China; Shandong Provincial Key Laboratory of Biochemical Engineering, Shandong, Qingdao 266042, China.
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Sun J, Xu Z, Hou Y, Yao W, Fan X, Zheng H, Piao J, Li F, Wei Y. Hierarchically structured microcapsules for oral delivery of emodin and tanshinone IIA to treat renal fibrosis. Int J Pharm 2022; 616:121490. [DOI: 10.1016/j.ijpharm.2022.121490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 12/28/2021] [Accepted: 01/13/2022] [Indexed: 10/19/2022]
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10
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Pu X, Ye N, Lin M, Chen Q, Dong L, Xu H, Luo R, Han X, Qi S, Nie W, He H, Wang Y, Dai L, Lin D, Gao F. β-1,3-d-Glucan based yeast cell wall system loaded emodin with dual-targeting layers for ulcerative colitis treatment. Carbohydr Polym 2021; 273:118612. [PMID: 34561010 DOI: 10.1016/j.carbpol.2021.118612] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/06/2021] [Accepted: 08/19/2021] [Indexed: 01/15/2023]
Abstract
Herein, a β-1,3-d-glucan based microcarrier, yeast cell wall microparticles (YPs), was used to develop a food-source-based nano-in-micro oral delivery system for ulcerative colitis (UC) treatment. Briefly, lactoferrin (Lf), which targets intestinal epithelial cells, was used to encapsulate emodin (EMO) to form nanoparticles (EMO-NPs), and then loaded into YPs with the natural macrophages targeting ability, forming a final formula with two outer-inner targeting layers (EMO-NYPs). These dual-targeting strategy could enhance the dual-effects of EMO in anti-inflammatory and mucosal repair effects respectively. As expected, cell uptake assessment confirmed that EMO-NPs and EMO-NYPs could target on the Lf and dection-1 receptors on the membranes of Caco-2 cells and macrophages, respectively. Importantly, EMO-NYPs showed the best anti-UC effects compared to EMO-NPs and free EMO, by inhibiting NF-κB pathway to anti-inflammation and promoting intestinal mucosa repair via MLCK/pMLC2 pathway. The results show that EMO-NYPs are a promising food-based oral delivery system in anti-UC.
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Affiliation(s)
- Xiulan Pu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Naijing Ye
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China
| | - Meisi Lin
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China; Sichuan Provincial Acupuncture School, Chengdu 611731, China
| | - Qiyan Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Lingling Dong
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Haiting Xu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Ruifeng Luo
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Xiaoqin Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Shanshan Qi
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Wenbiao Nie
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Haoqi He
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Yanli Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Linxin Dai
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China
| | - Dasheng Lin
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China; Chengdu Huashen Technology Group Co., Ltd., Chengdu 611137, Sichuan, China.
| | - Fei Gao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611130, China.
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11
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Zheng Q, Li S, Li X, Liu R. Advances in the study of emodin: an update on pharmacological properties and mechanistic basis. Chin Med 2021; 16:102. [PMID: 34629100 PMCID: PMC8504117 DOI: 10.1186/s13020-021-00509-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/17/2021] [Indexed: 12/21/2022] Open
Abstract
Rhei Radix et Rhizoma, also known as rhubarb or Da Huang, has been widely used as a spice and as traditional herbal medicine for centuries, and is currently marketed in China as the principal herbs in various prescriptions, such as Da-Huang-Zhe-Chong pills and Da-Huang-Qing-Wei pills. Emodin, a major bioactive anthraquinone derivative extracted from rhubarb, represents multiple health benefits in the treatment of a host of diseases, such as immune-inflammatory abnormality, tumor progression, bacterial or viral infections, and metabolic syndrome. Emerging evidence has made great strides in clarifying the multi-targeting therapeutic mechanisms underlying the efficacious therapeutic potential of emodin, including anti-inflammatory, immunomodulatory, anti-fibrosis, anti-tumor, anti-viral, anti-bacterial, and anti-diabetic properties. This comprehensive review aims to provide an updated summary of recent developments on these pharmacological efficacies and molecular mechanisms of emodin, with a focus on the underlying molecular targets and signaling networks. We also reviewed recent attempts to improve the pharmacokinetic properties and biological activities of emodin by structural modification and novel material-based targeted delivery. In conclusion, emodin still has great potential to become promising therapeutic options to immune and inflammation abnormality, organ fibrosis, common malignancy, pathogenic bacteria or virus infections, and endocrine disease or disorder. Scientifically addressing concerns regarding the poor bioavailability and vague molecular targets would significantly contribute to the widespread acceptance of rhubarb not only as a dietary supplement in food flavorings and colorings but also as a health-promoting TCM in the coming years.
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Affiliation(s)
- Qi Zheng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, 11 Bei San Huan Dong Lu, Beijing, 100029, China
| | - Shuo Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, 11 Bei San Huan Dong Lu, Beijing, 100029, China
| | - Xiaojiaoyang Li
- School of Life Sciences, Beijing University of Chinese Medicine, 11 Bei San Huan Dong Lu, Beijing, 100029, China
| | - Runping Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, 11 Bei San Huan Dong Lu, Beijing, 100029, China.
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12
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Xu B, Huang S, Chen Y, Wang Q, Luo S, Li Y, Wang X, Chen J, Luo X, Zhou L. Synergistic effect of combined treatment with baicalin and emodin on DSS-induced colitis in mouse. Phytother Res 2021; 35:5708-5719. [PMID: 34379340 DOI: 10.1002/ptr.7230] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 06/17/2021] [Accepted: 07/14/2021] [Indexed: 12/30/2022]
Abstract
The treatment of combination drugs in complex diseases has been spotlighted. Ulcerative colitis (UC) is a chronic inflammatory disease that has made progress in combination therapy. Baicalin, a flavone from Scutellaria baicalensis Georgi. (Lamiaceae), and emodin, an anthraquinone derivative from Rhei Radix et Rhizoma. (Polygonaceae), both have been reported to possess antiinflammatory activities. Our study investigated whether combined treatment with baicalin and emodin had a synergistic effect in inhibiting colitis inflammation. The results showed that baicalin combined with emodin at a lower dose had the same effect as the two drugs alone significantly alleviated the symptoms of dextran sulfate sodium (DSS)-induced colitis mice, involving the prevention of the loss of body weight and colon shortening, the decrease in the disease activity index (DAI), and intestinal damages. The combined treatment decreased the expression of CD14/TLR4/NF-κB pathway proteins and increased the expression of PPAR-γ protein in the colon of colitis mice. Further study in vitro has shown that baicalin decreased the expression of CD14, whereas emodin increased the expression of PPAR-γ, both of which inhibited the activity of NF-κB and exerted antiinflammatory effects. Furthermore, compared to the treatment using the two drugs individually, baicalin combined with emodin had more significant effects on the expression of CD14 and PPAR-γ. Therefore, emodin combined with baicalin had a synergistic effect on DSS-induced colitis.
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Affiliation(s)
- Bo Xu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shaowei Huang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yanping Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qing Wang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shuang Luo
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yanyang Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaojing Wang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jinyan Chen
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xia Luo
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lian Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
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13
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Zeouk I, Ouedrhiri W, Sifaoui I, Bazzocchi IL, Piñero JE, Jiménez IA, Lorenzo-Morales J, Bekhti K. Bioguided Isolation of Active Compounds from Rhamnus alaternus against Methicillin-Resistant Staphylococcus aureus (MRSA) and Panton-Valentine Leucocidin Positive Strains (MSSA-PVL). Molecules 2021; 26:molecules26144352. [PMID: 34299627 PMCID: PMC8306708 DOI: 10.3390/molecules26144352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 01/24/2023] Open
Abstract
Despite intensified efforts to develop an effective antibiotic, S. aureus is still a major cause of mortality and morbidity worldwide. The multidrug resistance of bacteria has considerably increased the difficulties of scientific research and the concomitant emergence of resistance is to be expected. In this study we have investigated the in vitro activity of 15 ethanol extracts prepared from Moroccan medicinal plants traditionally used for treatment of skin infections. Among the tested species I. viscosa, C. oxyacantha, R. tinctorum, A. herba alba, and B. hispanica showed moderate anti-staphylococcal activity. However, R. alaternus showed promising growth-inhibitory effects against specific pathogenic bacteria especially methicillin-susceptible Staphylococcus aureus Panton-Valentine leucocidin positive (MSSA-PVL) and methicillin-resistant S. aureus (MRSA). The bioguided fractionation of this plant using successive chromatographic separations followed by nuclear magnetic resonance (NMR) and mass spectrometry (MS) including EIMS and HREIMS analysis yielded the emodin (1) and kaempferol (2). Emodin being the most active with MICs ranging between 15.62 and 1.95 µg/mL and showing higher activity against the tested strains in comparison with the crude extract, its mechanism of action and the structure-activity relationship were interestingly discussed. The active compound has not displayed toxicity toward murine macrophage cells. The results obtained in the current study support the traditional uses of R. alaternus and suggest that this species could be a good source for the development of new anti-staphylococcal agents.
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Affiliation(s)
- Ikrame Zeouk
- Instituto Universitario De Enfermedades Tropicales y Salud Pública de Canarias, Universidad de la Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain;
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Department of Biology, Faculty of Sciences and Techniques, Sidi Mohamed Ben Abdellah University, Fez 2202, Morocco;
- Correspondence: (I.Z.); (J.E.P.); (J.L.-M.); Tel.: +212-621-290-377 (I.Z.); +349-22-316-502 (J.E.P.); +349-22-318-402 (J.L.-M.)
| | - Wessal Ouedrhiri
- Laboratory of Engineering, Electrochemistry, Modeling and Environment, Department of Chemistry, Faculty of Science, Sidi Mohamed Ben Abdellah University, Fez 2202, Morocco;
| | - Ines Sifaoui
- Instituto Universitario De Enfermedades Tropicales y Salud Pública de Canarias, Universidad de la Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain;
- Departamento de Obstetricia, Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de la Laguna, 38203 La Laguna, Spain
- Red de Investigación Colaborativa en Enfermedades Tropicales (RICET), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Isabel L. Bazzocchi
- Departamento de Química Orgánica, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, Avenida Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain; (I.L.B.); (I.A.J.)
| | - José E. Piñero
- Instituto Universitario De Enfermedades Tropicales y Salud Pública de Canarias, Universidad de la Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain;
- Departamento de Obstetricia, Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de la Laguna, 38203 La Laguna, Spain
- Red de Investigación Colaborativa en Enfermedades Tropicales (RICET), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence: (I.Z.); (J.E.P.); (J.L.-M.); Tel.: +212-621-290-377 (I.Z.); +349-22-316-502 (J.E.P.); +349-22-318-402 (J.L.-M.)
| | - Ignacio A. Jiménez
- Departamento de Química Orgánica, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, Avenida Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain; (I.L.B.); (I.A.J.)
| | - Jacob Lorenzo-Morales
- Instituto Universitario De Enfermedades Tropicales y Salud Pública de Canarias, Universidad de la Laguna, Avda. Astrofísico Fco. Sánchez, S/N, 38203 La Laguna, Spain;
- Departamento de Obstetricia, Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de la Laguna, 38203 La Laguna, Spain
- Red de Investigación Colaborativa en Enfermedades Tropicales (RICET), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence: (I.Z.); (J.E.P.); (J.L.-M.); Tel.: +212-621-290-377 (I.Z.); +349-22-316-502 (J.E.P.); +349-22-318-402 (J.L.-M.)
| | - Khadija Bekhti
- Laboratory of Microbial Biotechnology and Bioactive Molecules, Department of Biology, Faculty of Sciences and Techniques, Sidi Mohamed Ben Abdellah University, Fez 2202, Morocco;
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14
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Lama S, Merlin-Zhang O, Yang C. In Vitro and In Vivo Models for Evaluating the Oral Toxicity of Nanomedicines. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2177. [PMID: 33142878 PMCID: PMC7694082 DOI: 10.3390/nano10112177] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 10/29/2020] [Accepted: 10/29/2020] [Indexed: 02/07/2023]
Abstract
Toxicity studies for conventional oral drug formulations are standardized and well documented, as required by the guidelines of administrative agencies such as the US Food & Drug Administration (FDA), the European Medicines Agency (EMA) or European Medicines Evaluation Agency (EMEA), and the Japanese Pharmaceuticals and Medical Devices Agency (PMDA). Researchers tend to extrapolate these standardized protocols to evaluate nanoformulations (NFs) because standard nanotoxicity protocols are still lacking in nonclinical studies for testing orally delivered NFs. However, such strategies have generated many inconsistent results because they do not account for the specific physicochemical properties of nanomedicines. Due to their tiny size, accumulated surface charge and tension, sizeable surface-area-to-volume ratio, and high chemical/structural complexity, orally delivered NFs may generate severe topical toxicities to the gastrointestinal tract and metabolic organs, including the liver and kidney. Such toxicities involve immune responses that reflect different mechanisms than those triggered by conventional formulations. Herein, we briefly analyze the potential oral toxicity mechanisms of NFs and describe recently reported in vitro and in vivo models that attempt to address the specific oral toxicity of nanomedicines. We also discuss approaches that may be used to develop nontoxic NFs for oral drug delivery.
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Affiliation(s)
| | | | - Chunhua Yang
- Center for Diagnostics and Therapeutics, Digestive Disease Research Group, Institute for Biomedical Sciences, Petite Science Center, Suite 754, 100 Piedmont Ave SE, Georgia State University, Atlanta, GA 30303, USA; (S.L.); (O.M.-Z.)
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