1
|
Zhao Y, Peng Y, Wei X, Wu G, Li B, Li X, Long L, Zeng J, Luo W, Tian Y, Wang Z, Peng X. N-Salicyloyl Tryptamine Derivatives as Potent Neuroinflammation Inhibitors by Constraining Microglia Activation via a STAT3 Pathway. ACS Chem Neurosci 2024; 15:2484-2503. [PMID: 38865609 DOI: 10.1021/acschemneuro.4c00060] [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] [Indexed: 06/14/2024] Open
Abstract
Neuroinflammation is an important factor that exacerbates neuronal death and abnormal synaptic function in neurodegenerative diseases (NDDs). Due to the complex pathogenesis and the presence of blood-brain barrier (BBB), no effective clinical drugs are currently available. Previous results showed that N-salicyloyl tryptamine derivatives had the potential to constrain the neuroinflammatory process. In this study, 30 new N-salicyloyl tryptamine derivatives were designed and synthesized to investigate a structure-activity relationship (SAR) for the indole ring of tryptamine in order to enhance their antineuroinflammatory effects. Among them, both in vitro and in vivo compound 18 exerted the best antineuroinflammatory effects by suppressing the activation of microglia, which is the culprit of neuroinflammation. The underlying mechanism of its antineuroinflammatory effect may be related to the inhibition of transcription, expression and phosphorylation of signal transducer and activator of transcription 3 (STAT3) that subsequently regulated downstream cyclooxygenase-2 (COX-2) expression and activity. With its excellent BBB permeability and pharmacokinetic properties, compound 18 exhibited significant neuroprotective effects in the hippocampal region of lipopolysaccharides (LPS)-induced mice than former N-salicyloyl tryptamine derivative L7. In conclusion, compound 18 has provided a new approach for the development of highly effective antineuroinflammatory therapeutic drugs targeting microglia activation.
Collapse
Affiliation(s)
- Yuting Zhao
- The Affiliated Nanhua Hospital, Department of Clinical Laboratory, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Yan Peng
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Xiuzhen Wei
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Genping Wu
- The Affiliated Nanhua Hospital, Department of Clinical Laboratory, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Bo Li
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Xuelin Li
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Lin Long
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Jing Zeng
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Wei Luo
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Ying Tian
- The Affiliated Nanhua Hospital, Department of Clinical Laboratory, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Zhen Wang
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
- National Health Commission Key Laboratory of Birth Defect Research and Prevention Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan 410008, China
- MOE Key Lab of Rare Pediatric Diseases, School of Life Sciences, Central South University, Changsha, Hunan 410000, China
| | - Xue Peng
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| |
Collapse
|
2
|
Kelidari M, Abedi F, Hayes AW, Jomehzadeh V, Karimi G. The protective effects of protocatechuic acid against natural and chemical toxicants: cellular and molecular mechanisms. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03072-0. [PMID: 38607443 DOI: 10.1007/s00210-024-03072-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 03/26/2024] [Indexed: 04/13/2024]
Abstract
Protocatechuic acid (PCA) is a water-soluble polyphenol compound that is extracted from certain fruits and plants or obtained from glucose fermentation. Several in vivo and in vitro studies have determined that PCA has protective effects against the toxicity of natural and chemical toxicants. We searched these articles in PubMed, Google Scholar, and Scopus with appropriate keywords from inception up to August 2023. Forty-nine studies were found about protective effects of PCA against drug toxicity, metal toxicity, toxins, chemical toxicants, and some other miscellaneous toxicants. PCA indicates these protective effects by suppression of oxidative stress, inflammation, and apoptosis. PCA reduces reactive oxygen/nitrogen species (RONS) and enhances the level of antioxidant parameters mainly through the activation of the Nrf-2 signaling pathway. PCA also decreases the levels of inflammatory mediators via downregulating the TLR-4-mediated IKBKB/NF-κB and MAPK/Erk signaling pathways. In addition, PCA inhibits apoptosis by lowering the expression of Bax, caspase-3, and caspase-9 along with enhancing the level of the antiapoptotic protein Bcl-2. Further evaluation, especially in humans, is necessary to confirm PCA as a potential therapeutic approach to intervene in such toxicities.
Collapse
Affiliation(s)
- Mahdieh Kelidari
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Farshad Abedi
- Department of Clinical Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - A Wallace Hayes
- College of Public Health, University of South Florida, Tampa, FL, USA
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, USA
| | - Vahid Jomehzadeh
- Department of Surgery, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gholamreza Karimi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
| |
Collapse
|
3
|
Sun X, Wei D, Wang F, Yang F, Du Y, Xiao H, Wei X, Xiao A. Formation of nitrogen-containing disinfection by-products during the chloramination treatment of an emerging pollutant. CHEMOSPHERE 2024; 353:141536. [PMID: 38423150 DOI: 10.1016/j.chemosphere.2024.141536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 03/02/2024]
Abstract
Chloramination was commonly used as disinfectant for killing pathogens in water. However, in this process, nitrogen-containing disinfection by-products (N-DBPs) would accidently form and subsequently rise toxicity. Here, we investigated acute toxicity variation and by-products formation during chloramination treatment on UV filter 2-hydroxy-4-methoxy-5-sulfonic acid benzophenone (BP-4). Under alkaline conditions, the acute toxicity of this system had significant increase. A total of 17 transformation products were tentatively identified, and for them, plausible transformation pathways were proposed. Noticeably, numerous aniline and nitrosobenzene analogs were detected, and the dramatic increase of acute toxicity in this system might be primarily attributed to the formation of benzoquinone and aniline analogs. Besides, bromophenol, iodophenol and iodobenzoquinone analogs exhibiting high toxicity were generated in the presence of bromine and iodide ions. This study indicates that chloramination treatment may significantly increase potential health risk, further management on disinfection system is reasonable.
Collapse
Affiliation(s)
- Xuefeng Sun
- State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao, 266000, Shandong, China.
| | - Dongbin Wei
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Feipeng Wang
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fan Yang
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuguo Du
- State Key Laboratory of Environmental Chemistry and Eco-Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Han Xiao
- State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao, 266000, Shandong, China
| | - Xinming Wei
- State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao, 266000, Shandong, China
| | - Anshan Xiao
- State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao, 266000, Shandong, China
| |
Collapse
|
4
|
Mekuria AN, Nedi T, Gong YY, Abula T, Engidawork E. Liver Cirrhosis of Unknown Etiology and Its Predictors in Eastern Ethiopia. Risk Manag Healthc Policy 2024; 17:225-232. [PMID: 38282786 PMCID: PMC10812135 DOI: 10.2147/rmhp.s425954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 01/18/2024] [Indexed: 01/30/2024] Open
Abstract
Background The global burden of liver cirrhosis is increasing, with 2.1 million incident cases and nearly 1.5 million deaths in 2019. Despite the enormous progress in our understanding of the etiology of liver cirrhosis, significant cases of the disease have been reported in Eastern Ethiopia due to unidentified causes. Hence, this study aimed to identify predictors of liver cirrhosis of unknown etiology in Eastern Ethiopia. Methods A score of 7 out of 11 possible points on the ultrasound-based cirrhosis scale was used as a diagnostic criterion to include 127 liver cirrhosis patients. The study participants' demographic, dietary, lifestyle, and clinical data were gathered using a structured questionnaire and standardized reporting forms. The associations between the outcome (known and unknown etiology) and independent variables were modeled using binary logistic regression analysis. Results The etiology of liver cirrhosis was known in only 23% of patients and attributed to hepatitis B virus (21%), hepatitis C virus (0.8%), and alcohol abuse (0.8%). Sorghum consumption as a staple food (adjusted odds ratio (AOR) =3.8; 95% CI: 1.2, 12.5), splenomegaly (AOR = 4.0; 95% CI: 1.1, 14.4), and a family history of liver disease (AOR = 0.24; 95% CI: 0.06, 0.91) were significantly associated with liver cirrhosis of unknown etiology. Conclusion Sorghum consumption was found to be the determinant factor of liver cirrhosis of unknown etiology, suggesting it as a possible source of exposure to aflatoxin B1.
Collapse
Affiliation(s)
- Abraham Nigussie Mekuria
- Department of Pharmacology and Clinical Pharmacy, School of Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Teshome Nedi
- Department of Pharmacology and Clinical Pharmacy, School of Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Yun Yun Gong
- School of Food Science and Nutrition, University of Leeds, Leeds, UK
| | - Teferra Abula
- Department of Pharmacology and Clinical Pharmacy, School of Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Ephrem Engidawork
- Department of Pharmacology and Clinical Pharmacy, School of Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| |
Collapse
|
5
|
Fu X, Song L, Chen L, Jin S, Duan Z, Zhang B, Xing Y, Wang Y. Mechanistic insights into aniline-induced liver injury: Role of the mmu_circ_26984/Myh9/NLRP3 axis and modulation by N-acetylcysteine. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 270:115826. [PMID: 38118330 DOI: 10.1016/j.ecoenv.2023.115826] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 11/16/2023] [Accepted: 12/11/2023] [Indexed: 12/22/2023]
Abstract
Aniline is a widely used chemical. Chronic or high-dose exposure to aniline can lead to hepatocellular damage. Although the hepatic pathogenicity of aniline has been established in previous studies, studies involving pathogenic genes during aniline-induced liver injury are limited. Our study first discovered and identified the role and mechanism underlying a new circRNA mmu_circ_26984 in aniline-induced chemical liver injury. Further, we discuss the protective effect of N-acetylcysteine (NAC) in this pathway. After constructing in vitro and in vivo models of aniline treatment, we screened the circRNA with significant differences in expression in AML12 cells from control and aniline-treated groups by circRNA microarray analysis. Next, using RNA pulldown, liquid chromatography-mass spectrometry (LC-MS), and RNA immunoprecipitation, we analyzed the relationship between mmu_circ_26984 and myosin heavy chain 9 (Myh9). Subsequently, we determined the specific mechanism of action of mmu_circ_26984 and Myh9 in aniline-induced liver injury and the protective effect of NAC against aniline-induced liver injury process using Cell Counting Kit-8, Western blot, RNA extraction, a reverse transcription quantitative polymerase chain reaction (RT-qPCR), fluorescence in situ hybridization, immunohistochemistry, and immunofluorescence. The expression of mmu_circ_26984 was significantly increased in liver tissues and AML12 cells of aniline-treated mice compared with the control group. This high expression of mmu_circ_26984 increased the expression of injury-related inflammatory factors, such as NLRP3, Caspase-1, IL-18, and IL-1β in vivo and ex vivo, which exacerbated the level of liver injury. The interaction of mmu_circ_26984 with Myh9 also affected the course of liver injury. Mmu_circ_26984 overexpression and reduced treatment affected the levels of Myh9 expression in AML12 cells, as well as downstream inflammatory factors associated with injury, such as NLRP3. In addition, NAC reduced the process of liver injury mediated by the mmu_circ_26984/Myh9/NLRP3 axis. In conclusion, mmu_circ_26984 is a potential molecular marker and therapeutic target in the process of aniline-induced liver injury that can mediate aniline-exposure-induced liver injury via modulation of the mmu_circ_26984/Myh9/NLRP3 axis, and NAC can effectively attenuate the effect of this liver injury.
Collapse
Affiliation(s)
- Xinyu Fu
- College of Public Health, Harbin Medical University, 157 Baojian Road, Harbin 150086, China
| | - Li Song
- Department of Occupational Poisoning, Occupational Disease Research Institute of Heilongjiang Province, Harbin 150010, China
| | - Lili Chen
- College of Public Health, Harbin Medical University, 157 Baojian Road, Harbin 150086, China
| | - Shuo Jin
- College of Public Health, Harbin Medical University, 157 Baojian Road, Harbin 150086, China
| | - Zhongliang Duan
- College of Public Health, Harbin Medical University, 157 Baojian Road, Harbin 150086, China
| | - Bo Zhang
- College of Public Health, Harbin Medical University, 157 Baojian Road, Harbin 150086, China
| | - Yuechen Xing
- College of Public Health, Harbin Medical University, 157 Baojian Road, Harbin 150086, China
| | - Yue Wang
- College of Public Health, Harbin Medical University, 157 Baojian Road, Harbin 150086, China.
| |
Collapse
|
6
|
Sturiale V, Bruno F, Brancato D, D’Amico AG, Maugeri G, D’Agata V, Saccone S, Federico C. Cell Cycle Reactivation, at the Start of Neurodegeneration, Induced by Forskolin and Aniline in Differentiated Neuroblastoma Cells. Int J Mol Sci 2023; 24:14373. [PMID: 37762676 PMCID: PMC10531780 DOI: 10.3390/ijms241814373] [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: 08/28/2023] [Revised: 09/19/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
A characteristic hallmark of Alzheimer's disease (AD) is the intracellular accumulation of hyperphosphorylated tau protein, a phenomenon that appears to have associations with oxidative stress, double-stranded DNA breakage, and the de-condensation of heterochromatin. Re-entry into the cell division cycle appears to be involved in the onset of this neurodegenerative process. Indeed, the cell cycle cannot proceed regularly in the differentiated neurons leading to cell death. Here, we induced cell cycle reactivation in neuronal-like cells, obtained by neuroblastoma cells treated with retinoic acid, by exposure to forskolin or aniline. These compounds determine tau hyperphosphorylation or oxidative stress, respectively, resulting in the appearance of features resembling the start of neuronal degeneration typical of AD, such as tau hyperphosphorylation and re-entry into the cell cycle. Indeed, we detected an increased transcriptional level of cyclins and the appearance of a high number of mitotic cells. We also observed a delay in the initiation of the cell cycle when forskolin was co-administered with pituitary adenylate cyclase-activating polypeptide (PACAP). This delay was not observed when PACAP was co-administered with aniline. Our data demonstrate the relevance of tau hyperphosphorylation in initiating an ectopic cell cycle in differentiated neuronal cells, a condition that can lead to neurodegeneration. Moreover, we highlight the utility of neuroblastoma cell lines as an in vitro cellular model to test the possible neuroprotective effects of natural molecules.
Collapse
Affiliation(s)
- Valentina Sturiale
- Department of Biological, Geological and Environmental Sciences, University of Catania, 95124 Catania, Italy; (V.S.); (F.B.)
| | - Francesca Bruno
- Department of Biological, Geological and Environmental Sciences, University of Catania, 95124 Catania, Italy; (V.S.); (F.B.)
| | - Desiree Brancato
- Department of Biological, Geological and Environmental Sciences, University of Catania, 95124 Catania, Italy; (V.S.); (F.B.)
| | - Agata Grazia D’Amico
- Department of Drug and Health Sciences, University of Catania, 95125 Catania, Italy
| | - Grazia Maugeri
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Velia D’Agata
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy
| | - Salvatore Saccone
- Department of Biological, Geological and Environmental Sciences, University of Catania, 95124 Catania, Italy; (V.S.); (F.B.)
| | - Concetta Federico
- Department of Biological, Geological and Environmental Sciences, University of Catania, 95124 Catania, Italy; (V.S.); (F.B.)
| |
Collapse
|
7
|
Lin B, Tan B, Zhang Q, Li M, Peng H, Su J, He J, Zhang Y, Liu X, Wu N. Unraveling the nexus of Cr (Ⅵ), Aniline, and Microbial Ecology on aniline-degrading biosystem: Removal efficiency, sludge type, microbial ecology. BIORESOURCE TECHNOLOGY 2023; 382:129185. [PMID: 37196741 DOI: 10.1016/j.biortech.2023.129185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/10/2023] [Accepted: 05/14/2023] [Indexed: 05/19/2023]
Abstract
In order to explore the stress principle of Cr (Ⅵ) on aniline biodegradation system, a control group and experimental groups with the concentration of Cr (Ⅵ) at 2, 5, 8 mg/L were set up. The results demonstrated that Cr (Ⅵ) had minimal effects on the degradation efficiency of aniline but significantly inhibited nitrogen removal function. When Cr (Ⅵ) concentration was below 5 mg/L, the nitrification performance recovered spontaneously, while denitrification performance was severely impaired. Furthermore, the secretion of extracellular polymeric substances (EPS) and its fluorescence substance concentration were strongly inhibited with increasing Cr (Ⅵ) concentration. High-throughput sequencing revealed that the experimental groups were enriched with Leucobacter and Cr (Ⅵ)-reducing bacteria, but the abundance of nitrifiers and denitrifiers was significantly decreased compared to the control group. Overall, the effects of Cr (Ⅵ) stress at different concentrations on nitrogen removal performance were more significant than those on aniline degradation.
Collapse
Affiliation(s)
- Bing Lin
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Bin Tan
- CCCC Second Highway Consultants Co., Ltd, Wuhan, 430056, P.R. China
| | - Qian Zhang
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China; Sanya Science and Education Innovation Park, Wuhan University of Technology, Hainan 572024, P.R. China.
| | - Meng Li
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China; Sanya Science and Education Innovation Park, Wuhan University of Technology, Hainan 572024, P.R. China
| | - Haojin Peng
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Junhao Su
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Jing He
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Yunjie Zhang
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Xiangyu Liu
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China
| | - Nanping Wu
- School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan 430070, P.R. China
| |
Collapse
|
8
|
Graham B, Windsor IW, Raines RT. Inhibition of HIV-1 Protease by a Boronic Acid with High Oxidative Stability. ACS Med Chem Lett 2023; 14:171-175. [PMID: 36793428 PMCID: PMC9923841 DOI: 10.1021/acsmedchemlett.2c00464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 01/17/2023] [Indexed: 01/26/2023] Open
Abstract
HIV-1 protease is an important target for pharmaceutical intervention in HIV infection. Extensive structure-based drug design led to darunavir becoming a key chemotherapeutic agent. We replaced the aniline group of darunavir with a benzoxaborolone to form BOL-darunavir. This analogue has the same potency as darunavir as an inhibitor of catalysis by wild-type HIV-1 protease and, unlike darunavir, does not lose potency as an inhibitor of the common D30N variant. Moreover, BOL-darunavir is much more stable to oxidation than is a simple phenylboronic acid analogue of darunavir. X-ray crystallography revealed an extensive network of hydrogen bonds between the enzyme and benzoxaborolone moiety, including a novel direct hydrogen bond from a main-chain nitrogen to the carbonyl oxygen of the benzoxaborolone moiety that displaces a water molecule. These data highlight the utility of benzoxaborolone as a pharmacophore.
Collapse
Affiliation(s)
- Brian
J. Graham
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | | | - Ronald T. Raines
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
9
|
Savadori P, Dalfino S, Piazzoni M, Parrini M, Del Fabbro M, Tartaglia GM, Giardino L. A simplified method for detecting Gram-positive and Gram-negative bacteria in dental histological samples: A preliminary and comparative study. Acta Histochem 2023; 125:151992. [PMID: 36566583 DOI: 10.1016/j.acthis.2022.151992] [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: 09/29/2022] [Revised: 12/16/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Bacteria identification inside the dental tissue is a complex procedure requiring specific protocols. This study aimed to compare two classical Gram staining methods with a new staining method proposed by the authors to detect Gram-positive and Gram-negative bacteria in dental histological samples of human dentin. METHODS Ten human teeth, extracted because of various pathologies, were decalcified, dehydrated, and paraffin-embedded. Then, approximately 100 serial sections of 4 µm thickness were made per sample. The serial sections were placed on glass slides and were stained according to Brown-Brenn, Brown-Hopps, and a proposed modification of Brown-Brenn staining. Both ATCC strains, smeared on glass slides, were stained following each method's instructions used in histological samples. RESULTS From a qualitative evaluation, the Brown-Brenn method resulted in better staining of Gram-positive bacteria, while the authors' proposed staining technique was more oriented towards Gram-negative bacteria. On the other hand, the Brown-Hopps showed quite a balance in detecting Gram-positive and Gram-negative bacteria. Unlike the Brown-Brenn stain, the other two protocols showed better stainability of Gram-negative microorganisms in bacterial-smeared samples. CONCLUSION All staining techniques evaluated in this article can identify bacteria, but the outcome can change according to the staining procedure used.
Collapse
Affiliation(s)
- Paolo Savadori
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, IRCCS Fondazione Cà Granda IRCCS Ospedale Maggiore Policlinico, Milano, Italy
| | - Sophia Dalfino
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, IRCCS Fondazione Cà Granda IRCCS Ospedale Maggiore Policlinico, Via Francesco Sforza, 35, 20122 Milano, Italy; Complex Tissue Regeneration Department, MERLN Institute for Technology Inspired Regenerative Medicine, Maastricht, The Netherlands.
| | - Marco Piazzoni
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, IRCCS Fondazione Cà Granda IRCCS Ospedale Maggiore Policlinico, Milano, Italy
| | - Matteo Parrini
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, IRCCS Fondazione Cà Granda IRCCS Ospedale Maggiore Policlinico, Milano, Italy
| | - Massimo Del Fabbro
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, IRCCS Fondazione Cà Granda IRCCS Ospedale Maggiore Policlinico, Milano, Italy
| | - Gianluca Martino Tartaglia
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, IRCCS Fondazione Cà Granda IRCCS Ospedale Maggiore Policlinico, Milano, Italy
| | | |
Collapse
|
10
|
The prospective effect of fucoidan on splenic dysfunction caused by oxaliplatin in male rats through endoplasmic stress dynamics. Sci Rep 2022; 12:22147. [PMID: 36550146 PMCID: PMC9780252 DOI: 10.1038/s41598-022-25441-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 11/30/2022] [Indexed: 12/24/2022] Open
Abstract
Fucoidans (FUCs) are highly sulfated polysaccharides demonstrating multiple actions in different systems. Oxaliplatin (OXA) is a platinum-containing chemotherapeutic agent with several side effects that restrict its usage. The current study aimed to determine the potential effect of FUC in male rats with splenic dysfunction induced by OXA. Eighty adult male rats aged (8-9 weeks) weighing (190-230 g) were divided into four groups: (Group I: the control group): Rats were administrated normal saline; (Group II: controls treated by FUC): Rats were treated with FUC; (Group III: Splenic dysfunction group): Rats were treated with 8 mg/kg OXA. (IV: Splenic dysfunction treated by FUC): Rats were treated by OXA as Group III, then fucoidan was given. At the end of the experiment, blood was collected to determine red blood cells and white blood cells. Splenic tissues were divided into one part for biochemical assays, oxidative stress markers as MDA and catalase, inflammatory markers (TNF-alpha, IL6), and apoptotic markers (caspase 3) and gene expression of Nrf2, Mapk1 gene expression, and endoplasmic stress parameters and the other part was used for immunohistochemical and histopathological analysis. Compared to the OXA-induced splenic dysfunction group, FUC significantly decreased high levels of MDA, TNF- alpha, IL6, caspase-3, Mapk1, endoplasmic stress induced by OXA, and increased the level of catalase and Nrf2. Fucoidan has corrected the histopathological and immunohistochemical changes compared to the OXA-induced splenic dysfunction group. In conclusion, our findings suggest that fucoidan has a significant role in the treatment of splenic dysfunction induced by OXA.
Collapse
|
11
|
Domiaty DMM. The Preventive and Restorative Potentials of Shilajit Extract in Rats Treated with Mercury Chloride. JOURNAL OF BIOCHEMICAL TECHNOLOGY 2022. [DOI: 10.51847/vaqgeolzjg] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
12
|
Zhong X, Luo R, Yan G, Ran K, Shan H, Yang J, Liu Y, Yu S, Pu C, Zheng Y, Li R. Lead optimization to improve the antiviral potency of 2-aminobenzamide derivatives targeting HIV-1 Vif-A3G axis. Eur J Med Chem 2021; 224:113680. [PMID: 34245947 DOI: 10.1016/j.ejmech.2021.113680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 04/27/2021] [Accepted: 06/27/2021] [Indexed: 02/08/2023]
Abstract
The viral infectivity factor (Vif)-apolipoprotein B mRNA-editing enzyme, catalytic polypeptide-like 3G (APOBEC3G) axis has been recognized as a valid target for developing novel small-molecule therapies for acquired immune deficiency syndrome (AIDS) or for enhancing innate immunity against viruses. Our previous work reported the novel Vif antagonist 2-amino-N-(2-methoxyphenyl)-6-((4-nitrophenyl)sulfonyl)benzamide (2) with strong antiviral activity. In this work, through optimizations of ring C of 2, we discovered the more potent compound 6m with an EC50 of 0.07 μM in non-permissive H9 cells, reflecting an approximately 5-fold enhancement of antiviral activity compared to that of 2. Western blotting indicated that 6m more strongly suppressed the defensive protein Vif than 2 at the same concentration. Furthermore, 6m suppressed the replication of various clinical drug-resistant HIV strains (FI, NRTI, NNRTI, IN and PI) with relatively high efficacy. These results suggested that compound 6m is a more potent candidate for treating AIDS.
Collapse
Affiliation(s)
- Xinxin Zhong
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Ronghua Luo
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology,Chinese Academy of Sciences, Kunming, Yunnan, 650223, PR China
| | - Guoyi Yan
- School of Pharmacy, Henan University, Kaifeng, Henan, 475001, PR China
| | - Kai Ran
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Huifang Shan
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Jie Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Yuanyuan Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Su Yu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Chunlan Pu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China
| | - Yongtang Zheng
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology,Chinese Academy of Sciences, Kunming, Yunnan, 650223, PR China.
| | - Rui Li
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, PR China.
| |
Collapse
|
13
|
Huang Y, Zhou Z, Zhang J, Hao Z, He Y, Wu Z, Song Y, Yuan K, Zheng S, Zhao Q, Li T, Wang B. lncRNA MALAT1 participates in metformin inhibiting the proliferation of breast cancer cell. J Cell Mol Med 2021; 25:7135-7145. [PMID: 34164906 PMCID: PMC8335702 DOI: 10.1111/jcmm.16742] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/28/2021] [Accepted: 06/03/2021] [Indexed: 12/20/2022] Open
Abstract
In recent years, the repurposing of conventional and chemotherapeutic drugs is recognized as an alternative strategy for health care. The main purpose of this study is to strengthen the application of non‐oncological drug metformin on breast cancer treatment in the perspective of epigenetics. In the present study, metformin was found to inhibit cell proliferation, promote apoptosis and induce cell cycle arrest in breast cancer cells at a dose‐dependent manner. In addition, metformin treatment elevated acH3K9 abundance and decreased acH3K18 level. The expression of lncRNA MALAT1, HOTAIR, DICER1‐AS1, LINC01121 and TUG1 was up‐regulated by metformin treatment. In metformin‐treated cells, MALAT1 knock‐down increased the Bax/Bcl2 ratio and enhanced p21 but decreased cyclin B1 expression. The expression of Beclin1, VDAC1, LC3‐II, CHOP and Bip was promoted in the cells received combinatorial treatment of metformin and MALAT1 knock‐down. The reduced phosphorylation of c‐Myc was further decreased in the metformin‐treated cells in combination with MALAT1 knock‐down than metformin treatment alone. Taken together, these results provide a promising repurposed strategy for metformin on cancer treatment by modulating epigenetic modifiers.
Collapse
Affiliation(s)
- Yongye Huang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Ziyan Zhou
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Jin Zhang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Zhenzhen Hao
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yunhao He
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Zihan Wu
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yiquan Song
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Kexun Yuan
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Shanyu Zheng
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Qi Zhao
- School of Computer Science and Software Engineering, University of Science and Technology Liaoning, Anshan, China
| | - Tianye Li
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Bing Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| |
Collapse
|
14
|
Yamuna A, Jiang TY, Chen SM. Preparation of K + intercalated MnO 2-rGO composite for the electrochemical detection of nitroaniline in industrial wastewater. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125054. [PMID: 33445046 DOI: 10.1016/j.jhazmat.2021.125054] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/16/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
This work reports the electrochemical detection of highly hazardous material 4-Nitroaniline (4-NA) based on the metal oxide-rGO composite materials. The potassium intercalated MnO2-rGO composite material was prepared by a simple one-pot reduction method. The K+ intercalation on K-MnO2-rGO was confirmed by X-ray photoelectron spectroscopy (XPS) and Raman analysis. The amorphous nature of prepared material was scrutinized by high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED) pattern analysis. The elemental compositions are done by energy dispersive X-ray Analysis (EDX) mapping. The prepared composite material K-MnO2-rGO was used to determine the 4-NA by differential pulse voltammetry (DPV). The electroanalytical performances of fabricated K-MnO2-rGO/SPCE were compared with the K-MnO2 and rGO in pH 7. The developed 4-NA sensor showed good sensitivity (2.85 µA µM-1 cm-2), linear range (0.001-10.53 µM), and LOD (0.7 nM). Furthermore, the K-MnO2-rGO/SPCE exhibited high selectivity with the other potential interfering nitro compounds in river water and pond water samples. Therefore the developed sensor can be applied for the determination of noxious pollutants in real-time monitoring devices.
Collapse
Affiliation(s)
- Annamalai Yamuna
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Ting-Yu Jiang
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
| |
Collapse
|
15
|
Jin Y, Yan B. A bi-functionalized metal-organic framework based on N-methylation and Eu 3+ post-synthetic modification for highly sensitive detection of 4-Aminophenol (4-AP), a biomarker for aniline in urine. Talanta 2021; 227:122209. [PMID: 33714456 DOI: 10.1016/j.talanta.2021.122209] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/05/2021] [Accepted: 02/07/2021] [Indexed: 01/13/2023]
Abstract
4-Aminophenol (4-AP), which is a biomarker of aniline and represents the internal dose of aniline exposure in the human body, has attracted much attention for its detection in recent years. In this work, a bi-functionalized luminescent metal-organic framework (MOF), Eu@MOF-253-CH3, is designed and prepared through encapsulating the methyl groups and the Eu3+ cations into MOF-253 based on post-synthetic modification strategy. This study shows that the bi-functionalized Eu@MOF-253-CH3 can specifically recognize 4-AP upon luminescence quenching, while refraining from the interference of other coexisting species in urine. The Eu@MOF-253-CH3 hybrid as a 4-AP sensor also displays excellent performances including high water tolerance, good pH-independent stability, fast response, great selectivity and elevated sensitivity (0.5 μg mL-1) attributed to N-viologenized ligand. These results suggest the bi-functionalized Eu@MOF-253-CH3 can act as a promising sensor to practically monitor 4-AP's concentrations in human urine system, and then to realize the screening and pre-diagnosis of human health. Moreover, the possible sensing mechanisms are further explored at length.
Collapse
Affiliation(s)
- Yingmin Jin
- School of Chem. Sci. and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China
| | - Bing Yan
- School of Chem. Sci. and Engineering, Tongji University, Siping Road 1239, Shanghai, 200092, China; School of Materials Science and Engineering, Liaocheng University, Liaocheng, 252000, China.
| |
Collapse
|
16
|
Li K, Li H, Li C, Xie H. Phytoremediation of aniline by Salix babylonica cuttings: Removal, accumulation, and photosynthetic response. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 214:112124. [PMID: 33711578 DOI: 10.1016/j.ecoenv.2021.112124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 02/26/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
Aniline, a synthetic compound widely used in industrial and pesticide production, is a potential environmental pollutant. The removal of aniline is extremely important to minimize threats to human health and the surrounding environment. The objectives of this study were to investigate the removal efficiency and physiological response of Salix. babylonica cuttings to aniline pollution. Photosynthesis, chlorophyll fluorescence, spectral reflectance and the concentration of aniline in leaves, stems and roots were analysed. The experiment showed that S. babylonica has a strong removal effect on aniline wastewater. Cuttings from S. babylonica stems and roots played an important role in accumulating aniline. However, this increase in aniline concentration was dose dependent and was not always linear. With increasing aniline concentration in S. babylonica was increasingly stressed, with negative impacts on photosynthesis, chlorophyll fluorescence and spectral reflectance index in S. babylonica leaves. These results indicate that non-stomatal limitations are the main reason for the reduction in Pn in S. babylonica leaves due to chlorophyll structure destruction under aniline stress. In addition, aniline concentrations result in an unbalanced distribution of excitation energy between the two light systems, thereby hindering photosynthetic electron transfer and restricting the efficient operation of photosynthesis. Salix babylonica can endure moderate concentrations of aniline and has potential for the phyto-management of aniline-polluted wastewater, although further studies are needed using polluted wastewater.
Collapse
Affiliation(s)
- Kun Li
- Key Laboratory of State Forestry Administration for Silviculture of the Lower Yellow River/Shandong Agricultural University, Tai'an, China
| | - Hui Li
- College of Agriculture and Forestry Science, Linyi University, Linyi, Shandong, China
| | - Chuanrong Li
- Key Laboratory of State Forestry Administration for Silviculture of the Lower Yellow River/Shandong Agricultural University, Tai'an, China
| | - Huicheng Xie
- Key Laboratory of State Forestry Administration for Silviculture of the Lower Yellow River/Shandong Agricultural University, Tai'an, China.
| |
Collapse
|
17
|
Xu J, Jia H, Ma H, Tian C, Zhu C. Salinity relief aniline induced oxidative stress in Suaeda salsa: Activities of antioxidative enzyme and EPR measurements. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 205:111293. [PMID: 32949840 DOI: 10.1016/j.ecoenv.2020.111293] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 09/01/2020] [Accepted: 09/03/2020] [Indexed: 06/11/2023]
Abstract
Wastewater from printing and dyeing processes often contains aniline and high salinity, which are hazardous to aquatic species. Glycophytic plants cannot survive under high-salinity conditions, whereas halophytes grow well in such an environment. In this study, we investigated the influence of NaCl on the antioxidant level in Suaeda salsa affected by aniline stress. The seedlings showed various growth toxicity effects under different concentrations of aniline. The results showed that the effect of the aniline was more severe for the root growth compared to that for the shoot growth. Aniline exposure significantly increased the total free radicals and ·OH radicals in the plants. Suaeda salsa exposure to aniline caused oxidative stress by altering the superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activity, which resulted in the overproduction of H2O2 and the inducement of lipid peroxidation. Analysis revealed that the malondialdehyde (MDA) content was enhanced after aniline exposure and that the chlorophyll content was significantly decreased. The results showed that aniline induced the production of free radicals and reactive oxygen species (ROS), and changed the antioxidant defense system. This ultimately resulted in oxidative damage in S. salsa; however, it was found that moderate salinity could mitigate the effects. In conclusion, salinity may alleviate the growth inhibition caused by aniline by regulating the antioxidant capacity of S. salsa.
Collapse
Affiliation(s)
- Jie Xu
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China; College of Resources and Environment Science, Xinjiang University, Urumqi, 830046, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Honglei Jia
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China.
| | - Hongrui Ma
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China.
| | - Changyan Tian
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chao Zhu
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China
| |
Collapse
|
18
|
Mani MS, Joshi MB, Shetty RR, DSouza VL, Swathi M, Kabekkodu SP, Dsouza HS. Lead exposure induces metabolic reprogramming in rat models. Toxicol Lett 2020; 335:11-27. [PMID: 32949623 DOI: 10.1016/j.toxlet.2020.09.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 08/14/2020] [Accepted: 09/12/2020] [Indexed: 11/17/2022]
Abstract
Lead is a toxin of great public health concern affecting the young and aging population. Several factors such as age, gender, lifestyle, dose, and genetic makeup result in interindividual variations to lead toxicity mainly due to variations in metabolic consequences. Hence, the present study aimed to examine dose-dependent lead-induced systemic changes in metabolism using rat model by administering specific doses of lead such as 10 (low lead; L-Pb), 50 (moderate lead; M-Pb), and 100 mg/kg (high lead; H-Pb) body weight for a period of one month. Biochemical and haematological analysis revealed that H-Pb was associated with low body weight and feed efficiency, low total protein levels (p ≤ 0.05), high blood lead (Pb-B) levels (p ≤ 0.001), low ALAD (δ-aminolevulinate dehydratase) activity (p ≤ 0.0001), high creatinine (p ≤ 0.0001) and blood urea nitrogen (BUN) (p ≤ 0.01) levels, elevated RBC and WBC counts, reduced haemoglobin and blood cell indices compared to control. Spatial learning and memory test revealed that H-Pb exposed animals presented high latency to the target quadrant and escape platform compared to other groups indicating H-Pb alters cognition function in rats. Histopathological changes were observed in liver and kidney as they are the main target organs of lead toxicity. LC-MS analysis further revealed that Butyryl-L-carnitine (p ≤ 0.01) and Ganglioside GD2 (d18:0/20:0) (p ≤ 0.05) levels were significantly reduced in H-Pb group compared to all groups. Further, pathway enrichment analysis revealed abundance and significantly modulated metabolites associated with oxidative stress pathways. The present study is the first in vivo model of dose-dependent lead exposure for serum metabolite profiling.
Collapse
Affiliation(s)
- Monica Shirley Mani
- Department of Radiation Biology and Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| | - Manjunath B Joshi
- Department of Ageing, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| | - Rashmi R Shetty
- Department of Pathology, Melaka Manipal Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| | - Venzil Lavie DSouza
- Department of Radiation Biology and Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| | - M Swathi
- Department of Radiation Biology and Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| | - Shama Prasada Kabekkodu
- Department of Cellular and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| | - Herman Sunil Dsouza
- Department of Radiation Biology and Toxicology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India.
| |
Collapse
|
19
|
Hidalgo-Rosa Y, Treto-Suárez MA, Schott E, Zarate X, Páez-Hernández D. Sensing mechanism elucidation of a europium(III) metal-organic framework selective to aniline: A theoretical insight by means of multiconfigurational calculations. J Comput Chem 2020; 41:1956-1964. [PMID: 32559320 DOI: 10.1002/jcc.26365] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/15/2020] [Accepted: 05/27/2020] [Indexed: 01/20/2023]
Abstract
A theoretical procedure, via quantum chemical computations, to elucidate the detection principle of the turn-off luminescence mechanism of an Eu-based Metal-Organic Framework sensor (Eu-MOF) selective to aniline, is accomplished. The energy transfer channels that take place in the Eu-MOF, as well as understanding the luminescence quenching by aniline, were investigated using the well-known and accurate multiconfigurational ab initio methods along with sTD-DFT. Based on multireference calculations, the sensitization pathway from the ligand (antenna) to the lanthanide was assessed in detail, that is, intersystem crossing (ISC) from the S1 to the T1 state of the ligand, with subsequent energy transfer to the 5 D0 state of Eu3+ . Finally, emission from the 5 D0 state to the 7 FJ state is clearly evidenced. Otherwise, the interaction of Eu-MOF with aniline produces a mixture of the electronic states of both systems, where molecular orbitals on aniline now appear in the active space. Consequently, a stabilization of the T1 state of the antenna is observed, blocking the energy transfer to the 5 D0 state of Eu3+ , leading to a non-emissive deactivation. Finally, in this paper, it was demonstrated that the host-guest interactions, which are not taken frequently into account by previous reports, and the employment of high-level theoretical approaches are imperative to raise new concepts that explain the sensing mechanism associated to chemical sensors.
Collapse
Affiliation(s)
- Yoan Hidalgo-Rosa
- Doctorado en Fisicoquímica Molecular, Universidad Andres Bello, Santiago de Chile, Chile.,Millennium Nuclei on Catalytic Processes toward Sustainable Chemistry (CSC), Santiago, Chile
| | - Manuel A Treto-Suárez
- Doctorado en Fisicoquímica Molecular, Universidad Andres Bello, Santiago de Chile, Chile
| | - Eduardo Schott
- Millennium Nuclei on Catalytic Processes toward Sustainable Chemistry (CSC), Santiago, Chile.,Departamento de Química Inorgánica, UC Energy Research Center, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ximena Zarate
- Instituto de Ciencias Químicas Aplicadas, Theoretical and Computational Chemistry Center, Facultad de Ingeniería, Universidad Autónoma de Chile, Santiago, Chile
| | - Dayán Páez-Hernández
- Doctorado en Fisicoquímica Molecular, Universidad Andres Bello, Santiago de Chile, Chile.,Facultad de Ciencias Exactas, Universidad Andres Bello, Center of Applied Nanosciences (CANS), Santiago de Chile, Chile
| |
Collapse
|
20
|
Mohammed M, Mekala LP, Chintalapati S, Chintalapati VR. New insights into aniline toxicity: Aniline exposure triggers envelope stress and extracellular polymeric substance formation in Rubrivivax benzoatilyticus JA2. JOURNAL OF HAZARDOUS MATERIALS 2020; 385:121571. [PMID: 31753663 DOI: 10.1016/j.jhazmat.2019.121571] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 09/12/2019] [Accepted: 10/29/2019] [Indexed: 05/16/2023]
Abstract
Aniline is a major environmental pollutant of serious concern due to its toxicity. Although microbial metabolism of aniline is well-studied, its toxic effects and physiological responses of microorganisms to aniline are largely unexplored. Rubrivivax benzoatilyticus JA2, an aniline non-degrading bacterium, tolerates high concentrations of aniline and produces extracellular polymeric substance(EPS). Surprisingly, strain JA2 forms EPS only when exposed to aniline and other toxic compounds like organic solvents and heavy metals indicating that EPS formation is coupled to cell toxicity. Further, extensive reanalysis of the previous proteomic data of aniline exposed cells revealed up-regulation of envelope stress response(ESR) proteins such as periplasmic protein folding, envelope integrity, transmembrane complex, and cell-wall remodelling proteins. In silico analysis and molecular modeling of three highly up-regulated proteins revealed that these proteins were homologous to CpxARP proteins of ESR signalling pathway. Furthermore, EPS formation to known ESR activators(Triton-X-100, EDTA) suggests that envelope stress possibly regulating the EPS production. The present study suggests that aniline triggers envelope stress; to counter this strain JA2 activates ESR pathway and EPS production. Our study revealed the hitherto unknown toxic effects of aniline as an acute envelope stressor thus toxicity of aniline may be more profound to life-forms than previously thought.
Collapse
Affiliation(s)
- Mujahid Mohammed
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, P.O. Central University, Hyderabad 500 046, India
| | - Lakshmi Prasuna Mekala
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, P.O. Central University, Hyderabad 500 046, India
| | - Sasikala Chintalapati
- Bacterial Discovery Laboratory, Center for Environment, IST, JNT University Hyderabad, Kukatpally, Hyderabad 500 085, India
| | - Venkata Ramana Chintalapati
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, P.O. Central University, Hyderabad 500 046, India.
| |
Collapse
|
21
|
Liu Q, Dordick JS, Dinu CZ. Metal-Organic Framework-Based Composite for Photocatalytic Detection of Prevalent Pollutant. ACS APPLIED MATERIALS & INTERFACES 2019; 11:31049-31059. [PMID: 31374169 DOI: 10.1021/acsami.9b10438] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Photocatalytic properties of 2,5-furandicarboxylic acid (FDCA), a model organic molecule used for biopolymer production, are reported for the first time. Further integration of FDCA into metal-organic framework (MOF) structures and subsequent silver-based photoactivation leads to the next generation of hybrids with controlled morphologies, capable of forming sensorial platforms for prevalent phenol contaminant detection. The mechanisms that allow photocatalytic functionality are driven by the charge carrier generation in the organic molecule (either in its alone or integrated form) and depend on sample's physical and chemical properties as confirmed by scanning and transmission electron microscopy, Fourier transform infrared and X-ray photoelectron spectroscopy, and X-ray diffraction, respectively. Electrochemical analysis using cyclic voltammetry confirmed high sensitivity for p-nitrophenol (p-NP) detection as dictated by the selective electron migration at a user-controlled electrode interface. Considering the wide usage of p-NP and its increased discharge shown to lead to harmful effects on both the environment and biosystems, this new detection method is envisioned to allow effective control and regulation of such compound release, all under low-cost and environmentally friendly conditions.
Collapse
Affiliation(s)
- Qian Liu
- Department of Chemical and Biomedical Engineering , West Virginia University , Morgantown , West Virginia 26506 , United States
| | - Jonathan S Dordick
- Center for Biotechnology & Interdisciplinary Studies , Rensselaer Polytechnic Institute , Troy , New York 12180 , United States
| | - Cerasela Zoica Dinu
- Department of Chemical and Biomedical Engineering , West Virginia University , Morgantown , West Virginia 26506 , United States
| |
Collapse
|
22
|
Windsor IW, Palte MJ, Lukesh JC, Gold B, Forest KT, Raines RT. Sub-picomolar Inhibition of HIV-1 Protease with a Boronic Acid. J Am Chem Soc 2018; 140:14015-14018. [PMID: 30346745 PMCID: PMC6249028 DOI: 10.1021/jacs.8b07366] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Boronic acids have been typecast as moieties for covalent complexation and are employed only rarely as agents for non-covalent recognition. By exploiting the profuse ability of a boronic acid group to form hydrogen bonds, we have developed an inhibitor of HIV-1 protease with extraordinary affinity. Specifically, we find that replacing an aniline moiety in darunavir with a phenylboronic acid leads to 20-fold greater affinity for the protease. X-ray crystallography demonstrates that the boronic acid group participates in three hydrogen bonds, more than the amino group of darunavir or any other analog. Importantly, the boronic acid maintains its hydrogen bonds and its affinity for the drug-resistant D30N variant of HIV-1 protease. The BOH···OC hydrogen bonds between the boronic acid hydroxy group and Asp30 (or Asn30) of the protease are short ( rO···O = 2.2 Å), and density functional theory analysis reveals a high degree of covalency. These data highlight the utility of boronic acids as versatile functional groups in the design of small-molecule ligands.
Collapse
Affiliation(s)
- Ian W. Windsor
- Department of Biochemistry, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Michael J. Palte
- Medical Scientist Training Program, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
- Molecular & Cellular Pharmacology Graduate Training Program, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
| | - John C. Lukesh
- Department of Chemistry, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
| | - Brian Gold
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Katrina T. Forest
- Department of Chemistry, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
- Department of Bacteriology, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
| | - Ronald T. Raines
- Department of Biochemistry, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
- Department of Chemistry, University of Wisconsin–Madison, Madison, Wisconsin 53706, United States
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|