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Hou M, Liu L, Zhang Y, Pan Y, Ding N, Zhang Y. In vivo study of chelating agent-modified nano zero-valent iron: Biodistribution and toxicity in mice. WATER RESEARCH 2024; 257:121649. [PMID: 38718655 DOI: 10.1016/j.watres.2024.121649] [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: 11/19/2023] [Revised: 04/04/2024] [Accepted: 04/19/2024] [Indexed: 05/29/2024]
Abstract
In this study, the distribution and toxicity of nanoscale zero valent iron (nZVI) and nZVIs coated with citric acid and sodium tripolyphosphate (CA-nZVI and STPP-nZVI) in mice were investigated. nZVIs were primarily found in the livers and spleens, followed by the lungs, hearts, and kidneys. Histologic analysis revealed no significant histopathologic abnormalities or lesions in all organs except the liver at 14th d gavage. nZVIs did not have a noticeable impact on the body weight of the mice or the weight of their organs. Compared with the control group, there were no significant changes in hematology indexes in the nZVIs groups. However, the nZVIs groups exhibited varying levels of elevation in alanine aminotransferase, aspartate aminotransferase, and creatinine, suggesting liver and kidney inflammation in mice. The up-regulation of Nuclear Factor erythroid 2-Related Factor 2 and Heme oxygenase 1 in the nZVIs groups may be a response to nZVIs-induced oxidative stress. Immunohistochemical analysis confirmed the inflammatory response induced by the three nZVI groups. Chelating agents did not have a significant impact on the distribution or toxicity of nZVIs in mice. This study contributes to a comprehensive and detailed insight into nZVI toxicity in the environmental field.
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Affiliation(s)
- Minhui Hou
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Linwei Liu
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Yuqing Zhang
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Yuwei Pan
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, China
| | - Ning Ding
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing, 100048, China
| | - Ying Zhang
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
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KAUSHAL SHOBHANA, KUMAR PUSHPENDRA, KUMAR AMIT, SAINI BL, TARANG MITEK, CHAUHAN ANUJ, PRAKASH JAI, BHUSHAN BHARAT. Genetic evaluation of F2 inbred strain of Swiss albino mice by microsatellite markers. THE INDIAN JOURNAL OF ANIMAL SCIENCES 2021. [DOI: 10.56093/ijans.v90i9.109490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Genetic characterization of F2 inbred Swiss albino mice was done using 11 microsatellites markers (D1Mit15, D2Mit51, D2Mit61, D3Mit15, D3Mit55, D5Mit18, D7Mit323, D8Mit14, D9Mit27, D10Mit180, and D11Mit167). The results indicated that genotypic frequencies at all the loci were in Hardy-Weinberg disequilibrium (P<0.001). Total number of alleles per locus ranged from 3 (D2Mit61, D3Mit15, D8Mit14, D9Mit27, D10Mit180, D11Mit167) to 4 (D1Mit15, D2Mit51, D3Mit55, D5Mit18, D7Mit323), with a mean of 3.45. The numbers of effective alleles ranged between 1.847 and 3.814. The observed heterozygosity (Ho) was maximum for D1Mit15 (0.660) and minimum for D5Mit18 (0.080), with mean of 0.269. The FIS estimates was ranged from 0.0817 (D1Mit15) to 0.8799 (D5Mit18). The average inbreeding coefficient was 0.592, which indicates that parents were more related than expected under random mating. The range of PIC value (from 0.414 to 0.689) for various microsatellite loci was revealing that population under investigation was of high diversity maintaining a multiple allele.
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Zhang XT, Wang G, Ye LF, Pu Y, Li RT, Liang J, Wang L, Lee KKH, Yang X. Baicalin reversal of DNA hypermethylation-associated Klotho suppression ameliorates renal injury in type 1 diabetic mouse model. Cell Cycle 2020; 19:3329-3347. [PMID: 33190590 DOI: 10.1080/15384101.2020.1843815] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Baicalin is a flavone glycoside that possesses numerous pharmacological properties. but its protective mode of action in kidney injury induced by diabetes mellitus remains incompletely understood. Using a streptozotocin (STZ)-induced diabetic mouse model, we found that baicalin could ameliorate diabetes-induced the pathological changes of the kidney function and morphology through suppressing inflammation and oxidative stress. Furthermore, baicalin treatment could alleviate interstitial fibrosis in the diabetic kidney via inhibiting epithelial-to-mesenchymal transition (EMT), which was accompanied by a sharp upregulation of Klotho, the endogenous inhibitor of renal fibrosis. We further verified that baicalin-rescued expression of Klotho was associated with Klotho promoter hypomethylation due to aberrant methyltransferase 3a expressions. Klotho knockdown via RNA interferences largely abrogated the anti-renal fibrotic effects of Baicalin in HK2 cells. These findings suggested that baicalin could alleviate renal injury-induced by diabates through partly modulating Klotho promoter methylation, which provides new insights into the treatment of diabetic nephropathy.
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Affiliation(s)
- Xiao-Tan Zhang
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China.,Department of Clinical Pathology, The First Affiliated Hospital of Jinan University , Guangzhou, China
| | - Guang Wang
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China
| | - Liu-Fang Ye
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China
| | - Yu Pu
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China
| | - Run-Tong Li
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China
| | - Jianxin Liang
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China
| | - Lijun Wang
- Department of Public Health, Medical College, Jinan University , Guangzhou, China
| | - Kenneth Ka Ho Lee
- Key Laboratory for Regenerative Medicine of the Ministry of Education, School of Biomedical Sciences, Chinese University of Hong Kong , Shatin, Hong Kong
| | - Xuesong Yang
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China.,Key Laboratory for Regenerative Medicine of the Ministry of Education, Jinan University , Guangzhou, China
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Liu K, Wang G, Li L, Chen G, Gong X, Zhang Q, Wang H. GR-C/EBPα-IGF1 axis mediated azithromycin-induced liver developmental toxicity in fetal mice. Biochem Pharmacol 2020; 180:114130. [PMID: 32615080 DOI: 10.1016/j.bcp.2020.114130] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 06/25/2020] [Accepted: 06/26/2020] [Indexed: 01/23/2023]
Abstract
Azithromycin is considered an effective drug to treat the perinatal mycoplasma infection. However, there is a lack of studies on developmental toxicity of azithromycin. In this study, we observed the developmental toxicity of fetal liver induced by prenatal azithromycin exposure (PAE) in mice and explored the potential mechanism. Pregnant Kunming mice were intraperitoneally injected with azithromycin (37.5 and 150 mg/kg·d) from gestational day (GD) 9 to 18. After PAE, the bodyweight gain rates of pregnant mice and the birthweights of the offspring were decreased, and the liver morphology, development indexes and metabolic function were all altered in different degree in the PAE fetuses. Meanwhile, PAE decreased the fetal serum insulin-like growth factor 1 (IGF1) levels and liver IGF1 signal pathway expression, accompanied by glucocorticoid receptor-CCAAT enhancer-binding protein α (GR-C/EBPα) signal enhancement. Furthermore, azithromycin disturbed hepatocyte differentiation, maturation and metabolic function via upregulating GR-C/EBPα signal and reducing the expression and secretion levels of IGF1 in HepG2 cells. These changes could be reversed by GR siRNA or exogenous IGF1. These results indicated that PAE could cause fetal liver developmental toxicity in mice, and one of the main mechanisms was that azithromycin activated the GR-C/EBPα signal, inhibited the IGF1 signal pathway, and then disturbed the hepatic proliferation, apoptosis, differentiation, and glycose and lipid metabolism.
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Affiliation(s)
- Kexin Liu
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Guihua Wang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Li Li
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Guanghui Chen
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Xiaohan Gong
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Qi Zhang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Hui Wang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China.
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Han X, Shao H, Wang Y, Hu A, Chen R, Chen Q. Composition of the bacterial community in the gastrointestinal tract of Kunming mice. ELECTRON J BIOTECHN 2020. [DOI: 10.1016/j.ejbt.2019.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Peng Q, Chen L, Zhou S, Li H, Long J, Yao F, Zhuang Y, Zhang Z, Huang Y, Duan K. Co-existence of Citrobacter freundii exacerbated Pseudomonas aeruginosa infection in vivo. Int J Med Microbiol 2020; 310:151379. [PMID: 31759864 DOI: 10.1016/j.ijmm.2019.151379] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 09/11/2019] [Accepted: 11/10/2019] [Indexed: 02/05/2023] Open
Abstract
The presence of bacterial species other than the pathogen at infection site can affect the progression of a bacterial infection. Based on the fact that Citrobacter freundii can coexist during Pseudomonas aeruginosa infection, this study aims to investigate the impact of the co-existing C. freundii on the pathogenesis of P. aeruginosa infection. A murine peritonitis model was used to compare the mortality rates and histopathology of P. aeruginosaPAO1 infection in the presence and absence of a C. freundii clinical isolate C9. We also investigated the intercellular interaction between PAO1 and C9 by examining pyocyanin production and comparing gene expression levels. The results demonstrate that co-infection with C9 significantly increased the mortality rate and tissue damages in PAO1 infected mice. At an inoculum of 106 CFU, no mortality was observed in the C9 infected group at three days post-infection, whereas the mortality rate in the PAO1-C9 co-infection group was 64%, compared with 24% in the PAO1 infected group. Pyocyanin production in P. aeruginosa PAO1 increased 8 folds approximately in the presence of C. freundii C9, and operons associated with phenazine synthesis, phzA1 and phzA2, were also upregulated. Disruption of the phzA1 and phzA2 eliminated the exacerbated pathogenicity in the co-infection group, indicating that the elevated pyocyanin production was the main contributing factor. The results suggest that co-existing C. freundii during P. aeruginosa infection can exacerbate the pathogenicity, which may have significant implications in patients infected with these bacteria.
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Affiliation(s)
- Qing Peng
- Department of Hepatobiliary Surgery II, Institute of Regenerative Medicine, Zhujiang Hospital of Southern Medical University, Guangzhou, China; Department of Medical Microbiology and Infectious Diseases & Oral Biology, Rady Faculty of Health Sciences, University of Manitoba, 780 Bannatyne Ave, Winnipeg, MB R3E 0W2, Canada
| | - Lin Chen
- Department of Medical Microbiology and Infectious Diseases & Oral Biology, Rady Faculty of Health Sciences, University of Manitoba, 780 Bannatyne Ave, Winnipeg, MB R3E 0W2, Canada; Faculty of Life Sciences, Northwest University, 229 Taibai Rd. North, Xi'an, Shaanxi, China
| | - Shuqin Zhou
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Haiyan Li
- Department of Pharmacology, Shantou University Medical College, Shantou, Guangdong, China
| | - Jun Long
- Department of Clinical Laboratory, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Fen Yao
- Department of Pharmacology, Shantou University Medical College, Shantou, Guangdong, China
| | - Yijing Zhuang
- Department of Clinical Laboratory, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Zijie Zhang
- Department of Pharmacology, Shantou University Medical College, Shantou, Guangdong, China
| | - Yuanchun Huang
- Department of Clinical Laboratory, the first affiliated hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Kangmin Duan
- Department of Medical Microbiology and Infectious Diseases & Oral Biology, Rady Faculty of Health Sciences, University of Manitoba, 780 Bannatyne Ave, Winnipeg, MB R3E 0W2, Canada.
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Zhou YJ, Chang YN, You JQ, Li SZ, Zhuang W, Cao CJ. Cold-pressed Canola Oil Reduces Hepatic Steatosis by Modulating Oxidative Stress and Lipid Metabolism in KM Mice Compared with Refined Bleached Deodorized Canola Oil. J Food Sci 2019; 84:1900-1908. [PMID: 31183867 DOI: 10.1111/1750-3841.14504] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 01/15/2019] [Accepted: 02/14/2019] [Indexed: 12/15/2022]
Abstract
The quality of canola oil is affected by different extraction methods. The effect of cold-pressed canola oil (CPCO) diet and traditional refined bleached deodorized canola oil (RBDCO) diet on lipid accumulation and hepatic steatosis in mice were investigated. The body weight, peroxisome proliferator-activated receptor-α concentration, serum lipid profile, insulin sensitivity, and oxidative stress were increased in mice fed with CPCO diet, which had higher unsaturated fatty acid, tocopherols, phytosterols, and phospholipids but lower saturated fatty acid than RBDCO, after 12 weeks,. Moreover, CPCO significantly increased tocopherols and phytosterols content in liver and reduced liver cholesterol contents and lipid vacuoles accumulation than RBDCO. Also, serum proinflammatory cytokines, 3-hydroxy-3-methylglutary coenzyme A reductase expression level, lipogenic enzymes, and transcriptional factors such as sterol regulatory element-binding proteins 1c, acetyl-CoA carboxylase, and fatty acid synthase in the liver were also markedly downregulated from CPCO diet mice. Overall, CPCO can reduce lipid accumulation and hepatic steatosis by regulating oxidative stress and lipid metabolism in Kun Ming mice compared with RBDCO. PRACTICAL APPLICATION: The results suggested that more bioactive components were contained in cold-pressed canola oil (CPCO) rather than refined bleached deodorized canola oil (RBDCO). CPCO could lower the risk of obesity and hyperlipidemia, reduce lipid accumulation, and prevent hepatic steatosis. It could be considered as a kind of better edible oil than RBDCO.
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Affiliation(s)
- Ying-Jun Zhou
- The State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China Univ. of Science and Technology, Xuhui District, Shanghai, China
| | - Ya-Ning Chang
- The State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China Univ. of Science and Technology, Xuhui District, Shanghai, China
| | - Jia-Qi You
- The State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China Univ. of Science and Technology, Xuhui District, Shanghai, China
| | - Sui-Zi Li
- The State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China Univ. of Science and Technology, Xuhui District, Shanghai, China
| | - Wei Zhuang
- The State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China Univ. of Science and Technology, Xuhui District, Shanghai, China
| | - Cheng-Jia Cao
- The State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China Univ. of Science and Technology, Xuhui District, Shanghai, China
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Wang G, He B, Hu W, Liu K, Gong X, Kou H, Guo Y, Wang H. Low-expressional IGF1 mediated methimazole-induced liver developmental toxicity in fetal mice. Toxicology 2018; 408:70-79. [PMID: 29990518 DOI: 10.1016/j.tox.2018.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 06/03/2018] [Accepted: 07/05/2018] [Indexed: 11/24/2022]
Abstract
Anti-thyroid drugs (ATDs) therapy is necessary for pregnant women with hyperthyroidism. However, there is a lack of studies on developmental toxicity of ATDs. In this study, we observed the developmental toxicity of fetal liver induced by prenatal methimazole exposure (PME) in mice, and explored the potential mechanism. Pregnant Kunming mice were administered intragastrically with 4.5 or 18 mg/kg·d methimazole from gestational day (GD) 9∼18. After PME, the birth weights of the offspring mice were decreased, and the liver morphology, development indexes and metabolic function were all altered in different degree in the PME fetuses. Meanwhile, PME decreased the levels of serum and hepatic insulin-like growth factor 1 (IGF1), and reduced the gene expression of IGF1 downstream signaling pathway. Furthermore, the protein levels of phosphorylated-extracellular regulated protein kinases (p-ERK) and serine-threonine protein kinase (p-Akt) were also reduced. Furthermore, methimazole disturb hepatocyte differentiation, maturation and metabolic function through suppressing IGF1 signaling pathway in HepG2 cells. These results demonstrated that PME could induce fetal liver developmental toxicity, and the underlying mechanism was related to low-expression of hepatic IGF1 caused by methimazole, which mediated abnormal liver morphology and metabolic function.
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Affiliation(s)
- Guihua Wang
- Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China
| | - Bo He
- Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China
| | - Wen Hu
- Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China
| | - Kexin Liu
- Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China
| | - Xiaohan Gong
- Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China
| | - Hao Kou
- Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China
| | - Yu Guo
- Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China.
| | - Hui Wang
- Department of Pharmacology, Basic Medical College of Wuhan University, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China.
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Sequence analysis of chromosome 1 revealed different selection patterns between Chinese wild mice and laboratory strains. Mol Genet Genomics 2017. [PMID: 28631230 DOI: 10.1007/s00438-017-1335-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Both natural and artificial selection play a critical role in animals' adaptation to the environment. Detection of the signature of selection in genomic regions can provide insights for understanding the function of specific phenotypes. It is generally assumed that laboratory mice may experience intense artificial selection while wild mice more natural selection. However, the differences of selection signature in the mouse genome and underlying genes between wild and laboratory mice remain unclear. In this study, we used two mouse populations: chromosome 1 (Chr 1) substitution lines (C1SLs) derived from Chinese wild mice and mouse genome project (MGP) sequenced inbred strains and two selection detection statistics: Fst and Tajima's D to identify the signature of selection footprint on Chr 1. For the differentiation between the C1SLs and MGP, 110 candidate selection regions containing 47 protein coding genes were detected. A total of 149 selection regions which encompass 7.215 Mb were identified in the C1SLs by Tajima's D approach. While for the MGP, we identified nearly twice selection regions (243) compared with the C1SLs which accounted for 13.27 Mb Chr 1 sequence. Through functional annotation, we identified several biological processes with significant enrichment including seven genes in the olfactory transduction pathway. In addition, we searched the phenotypes associated with the 47 candidate selection genes identified by Fst. These genes were involved in behavior, growth or body weight, mortality or aging, and immune systems which align well with the phenotypic differences between wild and laboratory mice. Therefore, the findings would be helpful for our understanding of the phenotypic differences between wild and laboratory mice and applications for using this new mouse resource (C1SLs) for further genetics studies.
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Chromosome 1 Sequence Analysis of C57BL/6J-Chr1 KM Mouse Strain. Int J Genomics 2017; 2017:1712530. [PMID: 28487860 PMCID: PMC5401761 DOI: 10.1155/2017/1712530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/09/2017] [Accepted: 02/15/2017] [Indexed: 11/18/2022] Open
Abstract
The Chinese Kunming (KM) mouse is a widely used outbred mouse stock in China. However, its genetic structure remains unclear. In this study, we sequenced the genome of the C57BL/6J-Chr1KM (B6-Chr1KM) strain, the chromosome 1 (Chr 1) of which was derived from one KM mouse. With 36.6× average coverage of the entire genome, 0.48 million single nucleotide polymorphisms (SNPs) and 96,679 indels were detected on Chr 1 through comparison with reference strain C57BL/6J. Moreover, 46,590 of them were classified as novel mutations. Further functional annotation identified 155 genes harboring potentially functional variants, among which 27 genes have been associated with human diseases. We then performed sequence similarity and Bayesian concordance analysis using the SNPs identified on Chr 1 and their counterparts in three subspecies, Mus musculus domesticus, M. m. musculus, and M. m. castaneus. Both analyses suggested that the Chr 1 sequence of B6-Chr1KM was predominantly derived from M. m. domesticus while 9.7% of the sequence was found to be from M. m. musculus. In conclusion, our analysis provided a detailed description of the genetic variations on Chr 1 of B6-Chr1KM and a new perspective on the subspecies origin of KM mouse which can be used to guide further genetic studies with this mouse strain.
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Genome Sequencing of Chromosome 1 Substitution Lines Derived from Chinese Wild Mice Revealed a Unique Resource for Genetic Studies of Complex Traits. G3-GENES GENOMES GENETICS 2016; 6:3571-3580. [PMID: 27605517 PMCID: PMC5100856 DOI: 10.1534/g3.116.033902] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Mouse resources such as Collaborative Cross, outbred stocks, Hybrid Mouse Diversity Panel, and chromosome substitution strains have been instrumental to many progresses in the studies of complex traits genetics. We have established a population of chromosome 1 (Chr 1) substitution lines (C1SLs) in which donor chromosomes were derived from Chinese wild mice. Genome sequencing of 18 lines of this population showed that Chr 1 had been replaced by the donor chromosome. About 4.5 million unique single nucleotide polymorphisms and indels were discovered on Chr 1, of which 1.3 million were novel. Compared with sequenced classical inbred strains, Chr 1 of each C1SL had fivefold more variants, and more loss of function and potentially regulatory variants. Further haplotype analysis showed that the donor chromosome accumulated more historical recombination events, with the largest haplotype block being only 100 kb, and about 57% of the blocks were <1 kb. Subspecies origin analysis showed that these chromosomes had a mosaic genome structure that dominantly originated from Mus musculus musculus and M. m. castaneus subspecies, except for the C57BL/6J-Chr1KM line from M. m. domesticus. In addition, phenotyping four of these lines on blood biochemistry suggested that there were substantial phenotypic variations among our lines, especially line C57BL/6J-Chr1HZ and donor strain C57BL/6J. Further gene ontology enrichment revealed that the differentially expressed genes among liver-expressed genes between C57BL/6J and C57BL/6J-Chr1HZ were enriched in lipid metabolism biological processes. All these characteristics enable C1SLs to be a unique resource for identifying and fine mapping quantitative trait loci on mouse Chr 1, and carrying out systems genetics studies of complex traits.
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Li W, Cheng K, Zhang Y, Meng Q, Zhu S, Zhou G. No effect of exogenous melatonin on development of cryopreserved metaphase II oocytes in mouse. J Anim Sci Biotechnol 2015; 6:42. [PMID: 26380081 PMCID: PMC4568589 DOI: 10.1186/s40104-015-0041-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Accepted: 09/07/2015] [Indexed: 11/17/2022] Open
Abstract
Background This study was conducted to investigate effect of exogenous melatonin on the development of mouse mature oocytes after cryopreservation. Results First, mouse metaphase II (MII) oocytes were vitrified in the open-pulled straws (OPS). After warming, they were cultured for 1 h in M2 medium containing melatonin at different concentrations (0, 10−9, 10−7, 10−5, 10−3 mol/L). Then the oocytes were used to detect reactive oxygen species (ROS) and glutathione (GSH) levels (fluorescence microscopy), and the developmental potential after parthenogenetic activation. The experimental results showed that the ROS level and cleavage rate in 10−3 mol/L melatonin group was significantly lower than that in melatonin-free group (control). The GSH levels and blastocyst rates in all melatonin-treated groups were similar to that in control. Based on the above results, we detected the expression of gene Hsp90aa1, Hsf1, Hspa1b, Nrf2 and Bcl-x1 with qRT-PCR in oocytes treated with 10−7, or 10−3 mol/L melatonin and untreated control. After warming and culture for 1 h, the oocytes showed higher Hsp90aa1 expression in 10−7 mol/L melatonin-treated group than in the control (P < 0.05); the Hsf1, Hsp90aa1 and Bcl-x1 expression were significantly decreased in 10−3 mol/L melatonin-treated group when compared to the control. Based on the above results and previous research, we detected the development of vitrified-warmed oocytes treated with either 10−7 or 0 mol/L melatonin by in vitro fertilization. No difference was observed between them. Conclusions Our results indicate that the supplementation of melatonin (10−9 to 10−3 mol/L) in culture medium and incubation for 1 h did not improve the subsequent developmental potential of vitrified-warmed mouse MII oocytes, even if there were alteration in gene expression.
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Affiliation(s)
- Wei Li
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University (Chengdu Campus), Wenjiang, 611130 P.R. China ; Institute of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193 P.R. China
| | - Keren Cheng
- Department of Animal, Dairy, and Veterinary Sciences, Utah State University, Logan, Utah USA
| | - Yue Zhang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University (Chengdu Campus), Wenjiang, 611130 P.R. China
| | - Qinggang Meng
- Nanjing Biomedical Research Institute of Nanjing University, Nanjing, 210089 P.R. China
| | - Shi'en Zhu
- Department of Animal, Dairy, and Veterinary Sciences, Utah State University, Logan, Utah USA
| | - Guangbin Zhou
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University (Chengdu Campus), Wenjiang, 611130 P.R. China
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Li Z, Lin C, Xu J, Wu H, Feng J, Huang H. The relations between metabolic variations and genetic evolution of different species. Anal Biochem 2015; 477:105-14. [DOI: 10.1016/j.ab.2015.02.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 02/19/2015] [Indexed: 01/06/2023]
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14
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Guo J, Wu B, Li S, Bao S, Zhao L, Hu S, Sun W, Su J, Dai Y, Li X. Contribution of Mouse Embryonic Stem Cells and Induced Pluripotent Stem Cells to Chimeras through Injection and Coculture of Embryos. Stem Cells Int 2014; 2014:409021. [PMID: 25610470 PMCID: PMC4291195 DOI: 10.1155/2014/409021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Accepted: 11/30/2014] [Indexed: 01/02/2023] Open
Abstract
Blastocyst injection and morula aggregation are commonly used to evaluate stem cell pluripotency based on chimeric contribution of the stem cells. To assess the protocols for generating chimeras from stem cells, 8-cell mouse embryos were either injected or cocultured with mouse embryonic stem cells and induced pluripotent stem cells, respectively. Although a significantly higher chimera rate resulted from blastocyst injection, the highest germline contribution resulted from injection of 8-cell embryos with embryonic stem cells. The fully agouti colored chimeras were generated from both injection and coculture of 8-cell embryos with embryonic stem cells. Additionally, microsatellite DNA screening showed that the fully agouti colored chimeras were fully embryonic stem cell derived mice. Unlike embryonic stem cells, the mouse chimeras were only generated from injection of 8-cell embryos with induced pluripotent stem cells and none of these showed germline transmission. The results indicated that injection of 8-cell embryos is the most efficient method for assessing stem cell pluripotency and generating induced pluripotent stem cell chimeras, embryonic stem cell chimeras with germline transmission, and fully mouse embryonic stem cell derived mice.
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Affiliation(s)
- Jitong Guo
- Research Center for Animal Genetic Resources of Mongolia Plateau, Inner Mongolia University, Hohhot 010021, China
- Inner Mongolia Saikexing Reproductive Biotechnology Co., Ltd., Helingeer 011517, China
| | - Baojiang Wu
- Inner Mongolia Saikexing Reproductive Biotechnology Co., Ltd., Helingeer 011517, China
| | - Shuyu Li
- Inner Mongolia Saikexing Reproductive Biotechnology Co., Ltd., Helingeer 011517, China
| | - Siqin Bao
- Research Center for Animal Genetic Resources of Mongolia Plateau, Inner Mongolia University, Hohhot 010021, China
- Inner Mongolia Saikexing Reproductive Biotechnology Co., Ltd., Helingeer 011517, China
| | - Lixia Zhao
- Inner Mongolia Saikexing Reproductive Biotechnology Co., Ltd., Helingeer 011517, China
| | - Shuxiang Hu
- Inner Mongolia Saikexing Reproductive Biotechnology Co., Ltd., Helingeer 011517, China
| | - Wei Sun
- Inner Mongolia Saikexing Reproductive Biotechnology Co., Ltd., Helingeer 011517, China
| | - Jie Su
- Inner Mongolia Saikexing Reproductive Biotechnology Co., Ltd., Helingeer 011517, China
| | - Yanfeng Dai
- Research Center for Animal Genetic Resources of Mongolia Plateau, Inner Mongolia University, Hohhot 010021, China
- Inner Mongolia Saikexing Reproductive Biotechnology Co., Ltd., Helingeer 011517, China
| | - Xihe Li
- Research Center for Animal Genetic Resources of Mongolia Plateau, Inner Mongolia University, Hohhot 010021, China
- Inner Mongolia Saikexing Reproductive Biotechnology Co., Ltd., Helingeer 011517, China
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15
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The protective effect of 18β-Glycyrrhetinic acid against UV irradiation induced photoaging in mice. Exp Gerontol 2014; 61:147-55. [PMID: 25498537 DOI: 10.1016/j.exger.2014.12.008] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 12/01/2014] [Accepted: 12/09/2014] [Indexed: 12/25/2022]
Abstract
It has been confirmed that repeated exposure of skin to ultraviolet (UV) radiation results in cutaneous oxidative stress and inflammation, which act in concert to cause premature skin aging, well known as photoaging. 18β-Glycyrrhetinic acid (GA), widely used to treat various tissue inflammations, is the main active component of licorice root, and has also been shown to possess favorable anti-oxidative property and modulating immunity function. In the present study, we investigated the potential protective effect of GA on UV-induced skin photoaging in a mouse model. During the experimental period of ten consecutive weeks, the dorsal depilated skin of mice was treated with topical GA for 2 hours prior to UV irradiation. The results showed that GA pretreatment significantly alleviated the macroscopic and histopathological damages in mice skin caused by UV. Meanwhile, the data also indicated that GA markedly up-regulated the activities of the antioxidant enzymes (SOD, GSH-Px), and increased the content of skin collagen, while obviously decreased malonaldehyde level and inhibited high expressions of matrix metalloproteinase-1 (MMP-1) and -3 (MMP-3), as well as down-regulated the expression of inflammatory cytokines such as IL-6, TNF-α and IL-10. Taken together, these findings amply demonstrate that GA observably attenuates UV-induced skin photoaging mainly by virtue of its antioxidative and anti-inflammatory properties, as well as regulating the abnormal expression of MMP-1 and MMP-3.
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16
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Yu S, Yan X, Liu H, Cai X, Cao S, Shen L, Zuo Z, Deng J, Ma X, Wang Y, Ren Z. Improved establishment of embryonic stem (ES) cell lines from the Chinese Kunming mice by hybridization with 129 mice. Int J Mol Sci 2014; 15:3389-402. [PMID: 24573251 PMCID: PMC3975344 DOI: 10.3390/ijms15033389] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 02/10/2014] [Accepted: 02/14/2014] [Indexed: 01/20/2023] Open
Abstract
Chinese Kunming mice (Mus musculus Km), widely used as laboratory animals throughout China, remain very refractory for embryonic stem (ES) cell isolation. The present study was aimed to evaluate the effects of hybridization with 129/Sv mice, and culture media containing fetal bovine serum (FBS) or Knockout serum replacement (KSR) on ES cell isolation from Kunming mice. The results demonstrated that ES cells had been effectively isolated from the hybrid embryos of Kunming and 129/Sv mice using all three media containing 15% FBS, 15% KSR and their mixture of 14% KSR and 1% FBS, individually. These isolated ES cells had maintained in vitro undifferentiated for a long time, exhibiting all features specific for mouse ES cells. In addition, the rates of ES cell isolation in the medium containing 14% KSR and 1% FBS, was 46.67% and significantly higher than those in another two media containing only FBS or KSR (p < 0.05). Contrarily, no ES cell line had been established from Kunming mouse inbred embryos using the same protocols. These results suggested that ES cells with long-term self-renewal ability could be efficiently generated from hybrid embryos of Kunming and 129/Sv mice, and a small volume of FBS was necessary to isolate ES cells in the KSR medium when embryos and early ES cells cultured.
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Affiliation(s)
- Shumin Yu
- College of Veterinary Medicine, Sichuan Agricultural University, Xinkang Road 46#, Yucheng District, Ya'an 625014, Sichuan, China.
| | - Xingrong Yan
- Life Science College, North-West University, Xi'an 710069, Shaanxi, China.
| | - Huanhuan Liu
- College of Veterinary Medicine, Sichuan Agricultural University, Xinkang Road 46#, Yucheng District, Ya'an 625014, Sichuan, China.
| | - Xin Cai
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China.
| | - Suizhong Cao
- College of Veterinary Medicine, Sichuan Agricultural University, Xinkang Road 46#, Yucheng District, Ya'an 625014, Sichuan, China.
| | - Liuhong Shen
- College of Veterinary Medicine, Sichuan Agricultural University, Xinkang Road 46#, Yucheng District, Ya'an 625014, Sichuan, China.
| | - Zhicai Zuo
- College of Veterinary Medicine, Sichuan Agricultural University, Xinkang Road 46#, Yucheng District, Ya'an 625014, Sichuan, China.
| | - Junliang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Xinkang Road 46#, Yucheng District, Ya'an 625014, Sichuan, China.
| | - Xiaoping Ma
- College of Veterinary Medicine, Sichuan Agricultural University, Xinkang Road 46#, Yucheng District, Ya'an 625014, Sichuan, China.
| | - Ya Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Xinkang Road 46#, Yucheng District, Ya'an 625014, Sichuan, China.
| | - Zhihua Ren
- College of Veterinary Medicine, Sichuan Agricultural University, Xinkang Road 46#, Yucheng District, Ya'an 625014, Sichuan, China.
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17
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Guo Y, Ma Z, Kou H, Sun R, Yang H, Smith CV, Zheng J, Wang H. Synergistic effects of pyrrolizidine alkaloids and lipopolysaccharide on preterm delivery and intrauterine fetal death in mice. Toxicol Lett 2013; 221:212-8. [PMID: 23831946 DOI: 10.1016/j.toxlet.2013.06.238] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2012] [Revised: 06/22/2013] [Accepted: 06/27/2013] [Indexed: 01/26/2023]
Abstract
Preterm birth is the leading cause of death for newborn infants, and lipopolysaccharide (LPS) is commonly used to induce preterm delivery in experimental animals. Pyrrolizidine alkaloids (PAs) are widespread and occur in foods, herbs, and other plants. This study was to investigate the synergistic effects of LPS and two representative PAs, retrorsine (RTS) and monocrotaline (MCT), on preterm delivery and fetal death. Pregnant Kunming mice were divided into seven groups: control, RTS, MCT, LPS, RTS+LPS and two MCT+LPS groups. Animals in PAs and PAs+LPS groups were dosed intragastrically with RTS (10mg/kg) or MCT (20 mg/kg or 60 mg/kg) from gestational day (GD) 9 to GD16; mice given LPS were injected intraperitoneally with 150 μg/kg on GD15.5. Latencies to delivery, numbers of pups live and dead at birth were recorded, and livers of live neonates were collected. The incidence of LPS-induced preterm birth was enhanced in dams pretreated with MCT, and combination of PAs and LPS increased fetal mortality from PAs. The enhancement of LPS-induced preterm delivery and fetal demise in animals exposed chronically to PAs and other substances found in foods and beverages consumed widely by humans merits further focused investigation.
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Affiliation(s)
- Yu Guo
- Department of Pharmacology, School of Basic Medical Science, Wuhan University, Wuhan 430071, China
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18
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A novel immunocompetent murine tumor model for the evaluation of RCAd-enhanced RDAd transduction efficacy. Tumour Biol 2012; 33:1245-53. [DOI: 10.1007/s13277-012-0374-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Accepted: 03/04/2012] [Indexed: 11/25/2022] Open
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19
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Wu YL, Huang J, Liu J, Jin MF, Gu M, Hong Y, Wu ZR. Protective effect of recombinant human glucagon-like peptide-1 (rhGLP-1) pretreatment in STZ-induced diabetic mice. J Pept Sci 2011; 17:499-504. [PMID: 21495117 DOI: 10.1002/psc.1352] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Revised: 11/18/2010] [Accepted: 12/07/2010] [Indexed: 01/19/2023]
Abstract
Human glucagon-like peptide-1 (hGLP-1) and its mimetics have emerged as therapies for type 2 diabetes. However, clinical treatment of diabetes with hGLP-1 is ineffective because of rapid DPPIV-mediated hGLP-1 degradation in the circulation. In this study, we investigated the protective effect of recombinant human glucagon-like peptide-1 (rhGLP-1) treatment on STZ-induced diabetic mice. Mice were treated daily with rhGLP-1 (24 nmol/kg body weight) starting before or after STZ injection (40 mg/kg body weight) to induce diabetes. Mice pretreated with rhGLP-1 before but not after STZ showed significantly reduced blood glucose levels (P < 0.05), increased oral glucose tolerance (area under the curve, 1740 ± 71.18 vs 2416 ± 205.6, P < 0.05). Furthermore, the bioproduct of lipid peroxidation, MDA, was reduced and SOD and GSH-PX activities were enhanced globally and in pancreas of mice that received rhGLP-1 pretreatment before STZ, when comparing with STZ-treated mice. Finally, STZ-induced pancreatic islet damage was rescued by rhGLP-1 pretreatment. Taken together, the results of this study demonstrate that rhGLP-1 pretreatment has a protective effect against STZ-induced diabetes in mice. These findings suggest that the GLP-1 pretreatment may be a new therapeutic strategy in the preventive and protective treatment during diabetes initiation and progression.
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Affiliation(s)
- Ye-Lin Wu
- School of Life Science, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
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20
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Zhou H, Jian R, Kang J, Huang X, Li Y, Zhuang C, Yang F, Zhang L, Fan X, Wu T, Wu X. Anti-inflammatory effects of caper (Capparis spinosa L.) fruit aqueous extract and the isolation of main phytochemicals. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:12717-21. [PMID: 21105652 DOI: 10.1021/jf1034114] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Caper (Capparis spinosa L.) fruits have been used as food as well as folk medicine in the treatment of inflammatory disorders, such as rheumatism. The present study was carried out to study the anti-inflammatory activities of C. spinosa L. fruit (CSF) aqueous extract and to isolate main phytochemicals from its bioactive fractions. The CSF aqueous extract were separated into three fractions (CSF1-CSF3) by macroporous adsorption resins. The fractions CSF2 and CSF3 effectively inhibited the carrageenan-induced paw edema in mice. Systematic fractionation and isolation from CSF2+3 led to the identification of 13 compounds (1-13). Their chemical structures were elucidated by spectroscopic analyses including nuclear magnetic resonance (NMR) and mass spectrometry (MS) and literature comparisons. Major compounds found in the bioactive fraction CSF2+3 are flavonoids, indoles, and phenolic acids. To our knowledge, 8 of these 13 compounds (1-4, 6-7, 10, and 13) were identified from caper fruits for the first time. The anti-inflammatory effects of these purified compounds are currently under investigation.
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Affiliation(s)
- Haifeng Zhou
- Shanghai Institute of Pharmaceutical Industry, 1320 West Beijing Road, Shanghai 200040, China
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