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Woo S, Marquez L, Crandall WJ, Risener CJ, Quave CL. Recent advances in the discovery of plant-derived antimicrobial natural products to combat antimicrobial resistant pathogens: insights from 2018-2022. Nat Prod Rep 2023; 40:1271-1290. [PMID: 37439502 PMCID: PMC10472255 DOI: 10.1039/d2np00090c] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Covering: 2018 to 2022Antimicrobial resistance (AMR) poses a significant global health threat. There is a rising demand for innovative drug scaffolds and new targets to combat multidrug-resistant bacteria. Before the advent of antibiotics, infections were treated with plants chosen from traditional medicine practices. Of Earth's 374 000 plant species, approximately 9% have been used medicinally, but most species remain to be investigated. This review illuminates discoveries of antimicrobial natural products from plants covering 2018 to 2022. It highlights plant-derived natural products with antibacterial, antivirulence, and antibiofilm activity documented in lab studies. Additionally, this review examines the development of novel derivatives from well-studied parent natural products, as natural product derivatives have often served as scaffolds for anti-infective agents.
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Affiliation(s)
- Sunmin Woo
- Center for the Study of Human Health, Emory University, USA
| | - Lewis Marquez
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, USA
| | - William J Crandall
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, USA
| | - Caitlin J Risener
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, USA
| | - Cassandra L Quave
- Center for the Study of Human Health, Emory University, USA
- Department of Dermatology, Emory University School of Medicine, USA.
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Antioxidative and Anti-Inflammatory Protective Effects of β-Caryophyllene against Amikacin-Induced Nephrotoxicity in Rat by Regulating the Nrf2/AMPK/AKT and NF- κB/TGF- β/KIM-1 Molecular Pathways. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:4212331. [PMID: 36062191 PMCID: PMC9439917 DOI: 10.1155/2022/4212331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 08/04/2022] [Indexed: 12/14/2022]
Abstract
Herein, the molecular pathogenic pathways implicated in renal injury triggered by amikacin (AK), together with the alleviating actions of β-caryophyllene (BCP), were investigated. Adult male Wistar rats (n = 32) were disseminated to the four following groups (n = 8/group): normal group, positive control animals (PC) that received AK intraperitoneal injections for 14 days (500 mg/kg/day), and rats that received AK simultaneously with small (200 mg/kg/day) and high doses (400 mg/kg/day) of BCP. The PC renal tissues revealed abnormal histology alongside increased apoptosis and significantly elevated serum creatinine and urea with marked proteinuria and oliguria relative to the normal rats. Moreover, renal tissues from the PC animals also showed substantial upregulations in NF-κB/TGF-β/KIM-1, whilst Nrf2/AMPK/AKT/PCNA declined, at the gene and protein levels in comparison to the normal rats. Additionally, the levels of markers of oxidative stress (MDA/H2O2/protein adducts) and inflammation (TNF-α/IL-1β/IL-6/IL-18/TLR/HSP25) were substantially higher in the PC renal specimens, whereas the antioxidants (GSH/GPx/SOD1/CAT) and interleukin-10 decreased, relative to the NC group. Both BCP protocols improved the biochemical markers of renal functions, alleviated renal histopathology and apoptosis, and decreased NF-κB/TGF-β/KIM-1 alongside the concentrations of oxidative stress and proinflammatory markers, whilst promoting Nrf2/AMPK/AKT/IL-10/PCNA and the targeted antioxidants. However, the improving effects in the high-dose regimen were markedly stronger than those observed in animals treated with low dose of BCP. In conclusion, the present report is the first to connect NF-κB/TGF-β/KIM-1 proinflammatory and Nrf2/AMPK/AKT antioxidative stress pathways with the pathogenesis of AK-induced nephrotoxicity. Additionally, the current report is the first to disclose alleviating activities for BCP against AK-triggered nephrotoxicity by modulating multiple antioxidative stress with anti-inflammatory molecular pathways.
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Luo Q, Xia X, Luo Q, Qiu Y, Dong L, Zhao C, Peng F, Yu J, Huang F, He F. Long Noncoding RNA MEG3-205/Let-7a/MyD88 Axis Promotes Renal Inflammation and Fibrosis in Diabetic Nephropathy. KIDNEY DISEASES (BASEL, SWITZERLAND) 2022; 8:231-245. [PMID: 35702702 PMCID: PMC9149409 DOI: 10.1159/000523847] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 02/24/2022] [Indexed: 05/27/2023]
Abstract
AIM The aim of this study was to investigate the role and mechanism of long noncoding RNA (lncRNA) maternally expressed gene 3 (MEG3)-205 in renal inflammation and fibrosis in diabetic nephropathy (DN). MATERIALS AND METHODS lncRNA microarray profiling was used to examine differentially expressed lncRNAs of kidney tissues in db/db mice compared to db/m mice. Mouse mesangial cells (mMCs) were cultured in vitro with advanced glycation end products (AGEs) via transfection with lncRNA MEG3-205 siRNAs or plasmids. The role of lncRNA MEG3-205 in vivo was examined in db/db mice treated with long-acting lncRNA MEG3-205 siRNA. The interaction between lncRNA MEG3-205 and let-7a was investigated using luciferase assay and RNA immunoprecipitation assay. RESULTS lncRNA MEG3-205 was markedly upregulated in renal tissues of db/db mice, DN patients, and AGEs-treated mesangial cells. Overexpression of lncRNA MEG3-205 promoted the secretion of pro-inflammatory cytokines and synthesis of extracellular matrix proteins in mesangial cells. Both lncRNA MEG3-205 and myeloid differentiation primary-response protein 88 (MyD88) could bind to let-7a, and lncRNA MEG3-205 overexpression can significantly rescue the silencing effect of let-7a on MyD88 protein expression in mMCs. Mechanistically, we identified that lncRNA MEG3-205 could act as a competing endogenous RNA by binding with let-7a and thus regulate MyD88. Knockdown of lncRNA MEG3-205 alleviated albuminuria and attenuated renal inflammation and fibrosis in db/db mice. CONCLUSION These findings indicated an important role of the lncRNA MEG3-205/let-7a/MyD88 axis in regulating renal inflammation and fibrosis in DN. Targeting lncRNA MEG3-205 might present a promising therapeutic strategy for DN.
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Affiliation(s)
- Qimei Luo
- Department of Nephrology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, China
| | - Xi Xia
- Department of Nephrology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, China
| | - Qingqing Luo
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Yue Qiu
- Department of Nephrology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Lan Dong
- Department of Nephrology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Chen Zhao
- Department of Nephrology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, China
| | - Fenfen Peng
- Department of Nephrology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, China
| | - Jing Yu
- Department of Nephrology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, China
| | - Fengxian Huang
- Department of Nephrology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
- Key Laboratory of Nephrology, Ministry of Health and Guangdong Province, Guangzhou, China
| | - Feng He
- Department of Nephrology, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
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