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Sun J, Xie Q, Sun M, Zhang W, Wang H, Liu N, Wang M. Curcumin protects mice with myasthenia gravis by regulating the gut microbiota, short-chain fatty acids, and the Th17/Treg balance. Heliyon 2024; 10:e26030. [PMID: 38420408 PMCID: PMC10900935 DOI: 10.1016/j.heliyon.2024.e26030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 01/11/2024] [Accepted: 02/06/2024] [Indexed: 03/02/2024] Open
Abstract
Curcumin is widely used as a traditional drug in Asia. Interestingly, curcumin and its metabolites have been demonstrated to influence the microbiota. However, the effect of curcumin on the gut microbiota in patients with myasthenia gravis (MG) remains unclear. This study aimed to investigate the effects of curcumin on the gut microbiota community, short-chain fatty acids (SCFAs) levels, intestinal permeability, and Th17/Treg balance in a Torpedo acetylcholine receptor (T-AChR)-induced MG mouse model. The results showed that curcumin significantly alleviated the clinical symptoms of MG mice induced by T-AChR. Curcumin modified the gut microbiota composition, increased microbial diversity, and, in particular, reduced endotoxin-producing Proteobacteria and Desulfovibrio levels in T-AChR-induced gut dysbiosis. Moreover, we found that curcumin significantly increased fecal butyrate levels in mice with T-AChR-induced gut dysbiosis. Butyrate levels increased in conjunction with the increase in butyrate-producing species such as Oscillospira, Akkermansia, and Allobaculum in the curcumin-treated group. In addition, curcumin repressed the increased levels of lipopolysaccharide (LPS), zonulin, and FD4 in plasma. It enhanced Occludin expression in the colons of MG mice induced with T-AChR, indicating dramatically alleviated gut permeability. Furthermore, curcumin treatment corrected T-AChR-induced imbalances in Th17/Treg cells. In summary, curcumin may protect mice against myasthenia gravis by modulating both the gut microbiota and SCFAs, improving gut permeability, and regulating the Th17/Treg balance. This study provides novel insights into curcumin's clinical value in MG therapy.
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Affiliation(s)
- Jing Sun
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China
| | - Qinfang Xie
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China
| | - Mengjiao Sun
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China
| | - Wenjing Zhang
- Department of Neurology, Qinghai Provincial People's Hospital, Xining, Qinghai, 810007, China
| | - Hongxia Wang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China
| | - Ning Liu
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China
| | - Manxia Wang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, Gansu, 730030, China
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Roach J, Mital R, Haffner JJ, Colwell N, Coats R, Palacios HM, Liu Z, Godinho JLP, Ness M, Peramuna T, McCall LI. Microbiome metabolite quantification methods enabling insights into human health and disease. Methods 2024; 222:81-99. [PMID: 38185226 DOI: 10.1016/j.ymeth.2023.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 10/27/2023] [Accepted: 12/13/2023] [Indexed: 01/09/2024] Open
Abstract
Many of the health-associated impacts of the microbiome are mediated by its chemical activity, producing and modifying small molecules (metabolites). Thus, microbiome metabolite quantification has a central role in efforts to elucidate and measure microbiome function. In this review, we cover general considerations when designing experiments to quantify microbiome metabolites, including sample preparation, data acquisition and data processing, since these are critical to downstream data quality. We then discuss data analysis and experimental steps to demonstrate that a given metabolite feature is of microbial origin. We further discuss techniques used to quantify common microbial metabolites, including short-chain fatty acids (SCFA), secondary bile acids (BAs), tryptophan derivatives, N-acyl amides and trimethylamine N-oxide (TMAO). Lastly, we conclude with challenges and future directions for the field.
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Affiliation(s)
- Jarrod Roach
- Department of Chemistry and Biochemistry, University of Oklahoma
| | - Rohit Mital
- Department of Biology, University of Oklahoma
| | - Jacob J Haffner
- Department of Anthropology, University of Oklahoma; Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma
| | - Nathan Colwell
- Department of Chemistry and Biochemistry, University of Oklahoma
| | - Randy Coats
- Department of Chemistry and Biochemistry, University of Oklahoma
| | - Horvey M Palacios
- Department of Anthropology, University of Oklahoma; Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma
| | - Zongyuan Liu
- Department of Chemistry and Biochemistry, University of Oklahoma
| | | | - Monica Ness
- Department of Chemistry and Biochemistry, University of Oklahoma
| | - Thilini Peramuna
- Department of Chemistry and Biochemistry, University of Oklahoma
| | - Laura-Isobel McCall
- Department of Chemistry and Biochemistry, University of Oklahoma; Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma; Department of Chemistry and Biochemistry, San Diego State University.
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3
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Cantini D, Choleris E, Kavaliers M. Neurobiology of Pathogen Avoidance and Mate Choice: Current and Future Directions. Animals (Basel) 2024; 14:296. [PMID: 38254465 PMCID: PMC10812398 DOI: 10.3390/ani14020296] [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: 11/27/2023] [Revised: 01/09/2024] [Accepted: 01/13/2024] [Indexed: 01/24/2024] Open
Abstract
Animals are under constant threat of parasitic infection. This has influenced the evolution of social behaviour and has strong implications for sexual selection and mate choice. Animals assess the infection status of conspecifics based on various sensory cues, with odours/chemical signals and the olfactory system playing a particularly important role. The detection of chemical cues and subsequent processing of the infection threat that they pose facilitates the expression of disgust, fear, anxiety, and adaptive avoidance behaviours. In this selective review, drawing primarily from rodent studies, the neurobiological mechanisms underlying the detection and assessment of infection status and their relations to mate choice are briefly considered. Firstly, we offer a brief overview of the aspects of mate choice that are relevant to pathogen avoidance. Then, we specifically focus on the olfactory detection of and responses to conspecific cues of parasitic infection, followed by a brief overview of the neurobiological systems underlying the elicitation of disgust and the expression of avoidance of the pathogen threat. Throughout, we focus on current findings and provide suggestions for future directions and research.
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Affiliation(s)
- Dante Cantini
- Department of Psychology, College of Social and Applied Human Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada;
| | - Elena Choleris
- Department of Psychology, College of Social and Applied Human Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada;
| | - Martin Kavaliers
- Department of Psychology, College of Social and Applied Human Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada;
- Department of Psychology, Western University, London, ON N6A 3K7, Canada
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4
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Lock GDA, Helfer VE, Dias BB, Torres BGS, De Araújo BV, Dalla Costa T. Population pharmacokinetic modeling of the influence of chronic and acute biofilm-forming Pseudomonas aeruginosa lung infection on ciprofloxacin free pulmonary and epithelial lining fluid concentrations. Eur J Pharm Sci 2023; 189:106546. [PMID: 37517670 DOI: 10.1016/j.ejps.2023.106546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 07/20/2023] [Accepted: 07/24/2023] [Indexed: 08/01/2023]
Abstract
We previously reported that ciprofloxacin (CIP) free lung interstitial concentrations are decreased by biofilm-forming Pseudomonas aeruginosa pulmonary chronic (14 d) infection. To get a better understanding on the influence of infection on CIP lung distribution, in the present study free lung interstitial fluid and epithelial lining fluid (ELF) concentrations were determined by microdialysis in biofilm-forming P. aeruginosa acutely (2 d) and chronically infected (14 d) Wistar rats following CIP 20 mg/kg i.v. bolus dosing. A popPK model was developed, using NONMEM® (version 7.4.3) with FOCE+I, with plasma data described as a three-compartment model with first-order elimination. For lung data inclusion, the model was expanded to four compartments and ELF concentrations were described as a fraction of lung levels estimated as a distribution factor (ƒD). Acute infection had a minor impact on plasma and lung CIP distribution and both infection stages did not alter ELF drug penetration. Probability of target attainment of ƒAUC0-24/MIC ≥ 90 using 20 mg q8h, equivalent to 400 mg q8h in humans, showed that CIP free concentrations in plasma are adequate to successfully treat lung infections. However, lung and ELF free interstitial concentrations might be insufficient to result in efficacious treatment of biofilm-forming P. aeruginosa chronic infection. However, lung and ELF free interstitial concentrations might be insufficient to result in efficacious treatment of biofilm-forming P. aeruginosa chronic infection.
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Affiliation(s)
- Graziela De Araujo Lock
- Pharmacokinetics and PK/PD Modeling Laboratory, Pharmaceutical Sciences Graduate Program, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Victória Etges Helfer
- Pharmacokinetics and PK/PD Modeling Laboratory, Pharmaceutical Sciences Graduate Program, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Bruna Bernar Dias
- Pharmacokinetics and PK/PD Modeling Laboratory, Pharmaceutical Sciences Graduate Program, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Bruna Gaelzer Silva Torres
- Pharmacokinetics and PK/PD Modeling Laboratory, Pharmaceutical Sciences Graduate Program, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Bibiana Verlindo De Araújo
- Pharmacokinetics and PK/PD Modeling Laboratory, Pharmaceutical Sciences Graduate Program, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Teresa Dalla Costa
- Pharmacokinetics and PK/PD Modeling Laboratory, Pharmaceutical Sciences Graduate Program, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
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Combination Therapy with Indigo and Indirubin for Ulcerative Colitis via Reinforcing Intestinal Barrier Function. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:2894695. [PMID: 36825081 PMCID: PMC9943625 DOI: 10.1155/2023/2894695] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 12/07/2022] [Accepted: 01/03/2023] [Indexed: 02/16/2023]
Abstract
Indigo and indirubin, the active molecules of traditional Chinese medicine indigo naturalis, exert therapeutic activity for ulcerative colitis (UC). Indigo and indirubin are isomers and have distinctive profiles in anti-inflammation, immune regulation, intestinal microbiota regulation, oxidative stress regulation, and intestinal mucosal repair for UC treatment. Thus, exploring its combined administration's integrated advantages for UC is critical. This study is aimed at clarifying the effect and mechanisms of the combined administration of indigo and indirubin on colitis mouse models. The results showed that all the treatment groups could improve the disease symptoms, and the combined administration showed the best effect. Additionally, compared with indigo and indirubin alone, the combination group could significantly reinforce intestinal barrier function by increasing the expression of E-cadherin, occludin, ZO-1, and MUC2 and improving intestinal permeability. The treatment groups significantly improved the expression of cytokines, including TNF-α, IFN-γ, IL-12, IL-23, and IL-17A, and indirubin presented the most potent anti-inflammatory effect. Furthermore, all the treatment groups reduced the infiltration of the immune cells in intestinal lamina propria and the production of ROS/RNS. Notably, indigo exhibited a more substantial capacity to regulate natural killer (NK) cells, ILC3, neutrophils, and dendritic cells, followed by the combination group and indirubin alone. Finally, all the treatment groups modulated intestinal microbiota composition, increased the proportion of beneficial microbiota, and decreased the proportion of microbiota. Our results indicated that indigo and indirubin synergistically reinforced the intestinal barrier function, which may be associated with integrating the indirubin anti-inflammatory and intestinal microbiota regulating strength and indigo immune and ROS/RNS regulation advantage.
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Yi X, Cha M. Gut Dysbiosis Has the Potential to Reduce the Sexual Attractiveness of Mouse Female. Front Microbiol 2022; 13:916766. [PMID: 35677910 PMCID: PMC9169628 DOI: 10.3389/fmicb.2022.916766] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 04/26/2022] [Indexed: 11/13/2022] Open
Abstract
Increasing evidence has shown that the gut microbiome has significant effects on mate preferences of insects; however, whether gut microbiota composition affects sexual attractiveness and mate preference in mammals remains largely unknown. Here, we showed that antibiotic treatment significantly restructured the gut microbiota composition of both mouse males and females. Males, regardless of antibiotic treatment, exhibited a higher propensity to interact with the control females than the antibiotic-treated females. The data clearly showed that gut microbiota dysbiosis reduced the sexual attractiveness of females to males, implying that commensal gut microbiota influences female attractiveness to males. The reduced sexual attractiveness of the antibiotic-treated females may be beneficial to discriminating males by avoiding disorders of immunity and sociability in offspring that acquire maternal gut microbiota via vertical transmission. We suggest further work should be oriented to increase our understanding of the interactions between gut microbiota dysbiosis, sexual selection, and mate choice of wild animals at the population level.
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Affiliation(s)
- Xianfeng Yi
- College of Life Sciences, Qufu Normal University, Qufu, China
| | - Muha Cha
- College of Life Sciences, Qufu Normal University, Qufu, China.,Academy of Agricultural Sciences, Chifeng University, Chifeng, China
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Zhang S, Zhong R, Tang S, Han H, Chen L, Zhang H. Baicalin Alleviates Short-Term Lincomycin-Induced Intestinal and Liver Injury and Inflammation in Infant Mice. Int J Mol Sci 2022; 23:ijms23116072. [PMID: 35682750 PMCID: PMC9181170 DOI: 10.3390/ijms23116072] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 05/22/2022] [Accepted: 05/26/2022] [Indexed: 11/24/2022] Open
Abstract
The adverse effects of short-term megadose of antibiotics exposure on the gastrointestinal and liver tissue reactions in young children have been reported. Antibiotic-induced intestinal and liver reactions are usually unpredictable and present a poorly understood pathogenesis. It is, therefore, necessary to develop strategies for reducing the adverse effects of antibiotics. Studies on the harm and rescue measures of antibiotics from the perspective of the gut–liver system are lacking. Here, we demonstrate that lincomycin exposure reduced body weight, disrupted the composition of gut microbiota and intestinal morphology, triggered immune-mediated injury and inflammation, caused liver dysfunction, and affected lipid metabolism. However, baicalin administration attenuated the lincomycin-induced changes. Transcriptome analysis showed that baicalin improved immunity in mice, as evidenced by the decreased levels of intestinal inflammatory cytokines and expression of genes that regulate Th1, Th2, and Th17 cell differentiation, and inhibited mucin type O-glycan biosynthesis pathways. In addition, baicalin improved liver function by upregulating the expression of genes involved in bile acid secretion and lipid degradation, and downregulating genes involved in lipid synthesis in lincomycin-treated mice. Bile acids can regulate intestinal immunity and strengthen hepatoenteric circulation. In addition, baicalin also improved anti-inflammatory bacteria abundance (Blautia and Coprobacillus) and reduced pathogenic bacteria abundance (Proteobacteria, Klebsiella, and Citrobacter) in lincomycin-treated mice. Thus, baicalin can ameliorate antibiotic-induced injury and its associated complications such as liver disease.
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Affiliation(s)
| | | | | | | | - Liang Chen
- Correspondence: (L.C.); (H.Z.); Tel.: +86-10-6281-8910 (L.C.); Fax: +86-10-6281-6013 (H.Z.)
| | - Hongfu Zhang
- Correspondence: (L.C.); (H.Z.); Tel.: +86-10-6281-8910 (L.C.); Fax: +86-10-6281-6013 (H.Z.)
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8
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Reddiar SB, Jin L, Wai DCC, Csoti A, Panyi G, Norton RS, Nicolazzo JA. Lipopolysaccharide influences the plasma and brain pharmacokinetics of subcutaneously-administered HsTX1[R14A], a K V1.3-blocking peptide. Toxicon 2021; 195:29-36. [PMID: 33689790 DOI: 10.1016/j.toxicon.2021.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/22/2021] [Accepted: 03/03/2021] [Indexed: 12/01/2022]
Abstract
KV1.3 is a voltage-gated potassium channel that is upregulated in neuroinflammatory conditions, such as Alzheimer's disease and Parkinson's disease. HsTX1[R14A] is a potent and selective peptide blocker of KV1.3 with the potential to block microglial KV1.3, but its brain uptake is expected to be limited owing to the restrictive nature of the blood-brain barrier. To assess its peripheral and brain exposure, a LC-MS/MS assay was developed to quantify HsTX1[R14A] concentrations in mouse plasma and brain homogenate that was reliable and reproducible in the range of 6.7-66.7 nM (r2 = 0.9765) and 15-150 pmol/g (r2 = 0.9984), respectively. To assess if neuroinflammation affected HsTX1[R14A] disposition, C57BL/6 mice were administered HsTX1[R14A] subcutaneously (2 mg/kg) 24 h after an intraperitoneal dose of Escherichia coli lipopolysaccharide (LPS), which is commonly used to induce neuroinflammation; brain and plasma concentrations of HsTX1[R14A] were then quantified over 120 min. LPS treatment significantly retarded the decline in HsTX1[R14A] plasma concentrations, presumably as a result of reducing renal clearance, and led to substantial brain uptake of HsTX1[R14A], presumably through disruption of brain inter-endothelial tight junctions. This study suggests that HsTX1[R14A] may reach microglia in sufficient concentrations to block KV1.3 in neuroinflammatory conditions, and therefore has the potential to reduce neurodegenerative diseases.
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Affiliation(s)
- Sanjeevini Babu Reddiar
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Liang Jin
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Dorothy C C Wai
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Agota Csoti
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Hungary
| | - Gyorgy Panyi
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Hungary
| | - Raymond S Norton
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia; ARC Centre for Fragment-Based Design, Monash University, Parkville, Victoria, Australia
| | - Joseph A Nicolazzo
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia.
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9
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Zhu L, Xu LZ, Zhao S, Shen ZF, Shen H, Zhan LB. Protective effect of baicalin on the regulation of Treg/Th17 balance, gut microbiota and short-chain fatty acids in rats with ulcerative colitis. Appl Microbiol Biotechnol 2020; 104:5449-5460. [PMID: 32322944 DOI: 10.1007/s00253-020-10527-w] [Citation(s) in RCA: 95] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 02/26/2020] [Accepted: 03/05/2020] [Indexed: 01/16/2023]
Abstract
Baicalin is reported as an effective drug for ulcerative colitis (UC). However, its effect on gut microbiota and short-chain fatty acids (SCFAs) remains unknown. In this study, we investigated the role of baicalin on Th17/Treg balance, gut microbiota community, and SCFAs levels in trinitrobenzene sulphonic acid (TNBS)-induced UC rat model. We found the DAI scores were significantly increased in the TNBS-treated rats, while reduced in the baicalin-treated group in a dose-dependent manner, accompanied with the alleviation of mucosal injury, the reduction of ZO-1, Occludin, and MUC2 expression. At the meanwhile, baicalin repressed the increased levels of reactive oxygen species (ROS) and MDA, while deceased the GSH and SOD levels in colon tissue of rats treated with TNBS. On the other hand, administration of baicalin attenuated the TNBS-induced upregulations of Th17/Treg ratio, indicating a strong amelioration in the colorectal inflammation. More importantly, pyrosequencing of the V4 regions of 16S rRNA genes in rat feces revealed a deviation of the gut microbiota in response to baicalin treatment. In particular, the decreased Firmicutes-to-Bacteroidetes ratios and endotoxin-bearing Proteobacteria levels indicated that baicalin reversed TNBS-induced gut dysbiosis OTUs. In addition, we further investigated the fecal levels of major SCFAs in rats and found that baicalin significantly resorted the fecal butyrate levels in rats treated with TNBS. The increased butyrate levels were in consistent with the higher abundance of butyrate-producing species such as Butyricimonas spp., Roseburia spp., Subdoligranulum spp., and Eubacteriu spp. in baicalin-treated group. In conclusion, our findings suggest that baicalin possibly protected rats against ulcerative colitis by regulation of Th17/Treg balance, and modulation of both gut microbiota and SCFAs. Baicalin may be used as a prebiotic agent to treat ulcerative colitis-associated inflammation and gut dysbiosis.
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Affiliation(s)
- Lei Zhu
- Nanjing University of Chinese Medicine, No.138, Xianlin Road, Nanjing, 210029, Jiangsu, China.,Affiliated Hospital of Nanjing University of Chinese Medicine, No.155, Hanzhong Road, Nanjing, 210029, Jiangsu, China
| | - Lu-Zhou Xu
- Affiliated Hospital of Nanjing University of Chinese Medicine, No.155, Hanzhong Road, Nanjing, 210029, Jiangsu, China
| | - Song Zhao
- Affiliated Hospital of Nanjing University of Chinese Medicine, No.155, Hanzhong Road, Nanjing, 210029, Jiangsu, China
| | - Zhao-Feng Shen
- Affiliated Hospital of Nanjing University of Chinese Medicine, No.155, Hanzhong Road, Nanjing, 210029, Jiangsu, China
| | - Hong Shen
- Affiliated Hospital of Nanjing University of Chinese Medicine, No.155, Hanzhong Road, Nanjing, 210029, Jiangsu, China.
| | - Li-Bin Zhan
- Nanjing University of Chinese Medicine, No.138, Xianlin Road, Nanjing, 210029, Jiangsu, China.
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de Faria Ghetti F, Oliveira DG, de Oliveira JM, de Castro Ferreira LEVV, Cesar DE, Moreira APB. Influence of gut microbiota on the development and progression of nonalcoholic steatohepatitis. Eur J Nutr 2018; 57:861-876. [PMID: 28875318 DOI: 10.1007/s00394-017-1524-x] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 08/06/2017] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Nonalcoholic steatohepatitis (NASH) is characterized by the presence of steatosis, inflammation, and ballooning degeneration of hepatocytes, with or without fibrosis. The prevalence of NASH has increased with the obesity epidemic, but its etiology is multifactorial. The current studies suggest the role of gut microbiota in the development and progression of NASH. The aim is to review the studies that investigate the relationship between gut microbiota and NASH. These review also discusses the pathophysiological mechanisms and the influence of diet on the gut-liver axis. RESULT The available literature has proposed mechanisms for an association between gut microbiota and NASH, such as: modification energy homeostasis, lipopolysaccharides (LPS)-endotoxemia, increased endogenous production of ethanol, and alteration in the metabolism of bile acid and choline. There is evidence to suggest that NASH patients have a higher prevalence of bacterial overgrowth in the small intestine and changes in the composition of the gut microbiota. However, there is still a controversy regarding the microbiome profile in this population. The abundance of Bacteroidetes phylum may be increased, decreased, or unaltered in NASH patients. There is an increase in the Escherichia and Bacteroides genus. There is depletion of certain taxa, such as Prevotella and Faecalibacterium. CONCLUSION Although few studies have evaluated the composition of the gut microbiota in patients with NASH, it is observed that these individuals have a distinct gut microbiota, compared to the control groups, which explains, at least in part, the genesis and progression of the disease through multiple mechanisms. Modulation of the gut microbiota through diet control offers new challenges for future studies.
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Affiliation(s)
- Fabiana de Faria Ghetti
- Universitary Hospital and School of Medicine, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil.
- Unidade de Nutrição Clínica, Hospital Universitário, Rua Catulo Breviglieri, s/n, Bairro Santa Catarina, Juiz de Fora, Minas Gerais, CEP 36036-330, Brazil.
| | - Daiane Gonçalves Oliveira
- Universitary Hospital and School of Medicine, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
| | - Juliano Machado de Oliveira
- Universitary Hospital and School of Medicine, Federal University of Juiz de Fora, Juiz de Fora, Minas Gerais, Brazil
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Chen S, Li X, Liu L, Liu C, Han X. Ophiopogonin D alleviates high‐fat diet‐induced metabolic syndrome and changes the structure of gut microbiota in mice. FASEB J 2018; 32:1139-1153. [PMID: 29084766 DOI: 10.1096/fj.201700741rr] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Siyu Chen
- Department of Biochemistry and Molecular BiologyKey Laboratory of Human Functional Genomics of Jiangsu ProvinceNanjing Medical University Nanjing Jiangsu China
- School of Life Sciences, China Pharmaceutical University Nanjing Jiangsu China
| | - Xiao Li
- Department of Pathology First Affiliated Hospital with Nanjing Medical University Nanjing Jiangsu China
| | - Li Liu
- Department of Geriatrics First Affiliated Hospital with Nanjing Medical University Nanjing Jiangsu China
| | - Chang Liu
- School of Life Sciences, China Pharmaceutical University Nanjing Jiangsu China
| | - Xiao Han
- Department of Biochemistry and Molecular BiologyKey Laboratory of Human Functional Genomics of Jiangsu ProvinceNanjing Medical University Nanjing Jiangsu China
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12
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Petersen BK, Ropella GEP, Hunt CA. Virtual Experiments Enable Exploring and Challenging Explanatory Mechanisms of Immune-Mediated P450 Down-Regulation. PLoS One 2016; 11:e0155855. [PMID: 27227433 PMCID: PMC4881988 DOI: 10.1371/journal.pone.0155855] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 05/05/2016] [Indexed: 11/18/2022] Open
Abstract
Hepatic cytochrome P450 levels are down-regulated during inflammatory disease states, which can cause changes in downstream drug metabolism and hepatotoxicity. Long-term, we seek sufficient new insight into P450-regulating mechanisms to correctly anticipate how an individual’s P450 expressions will respond when health and/or therapeutic interventions change. To date, improving explanatory mechanistic insight relies on knowledge gleaned from in vitro, in vivo, and clinical experiments augmented by case reports. We are working to improve that reality by developing means to undertake scientifically useful virtual experiments. So doing requires translating an accepted theory of immune system influence on P450 regulation into a computational model, and then challenging the model via in silico experiments. We build upon two existing agent-based models—an in silico hepatocyte culture and an in silico liver—capable of exploring and challenging concrete mechanistic hypotheses. We instantiate an in silico version of this hypothesis: in response to lipopolysaccharide, Kupffer cells down-regulate hepatic P450 levels via inflammatory cytokines, thus leading to a reduction in metabolic capacity. We achieve multiple in vitro and in vivo validation targets gathered from five wet-lab experiments, including a lipopolysaccharide-cytokine dose-response curve, time-course P450 down-regulation, and changes in several different measures of drug clearance spanning three drugs: acetaminophen, antipyrine, and chlorzoxazone. Along the way to achieving validation targets, various aspects of each model are falsified and subsequently refined. This iterative process of falsification-refinement-validation leads to biomimetic yet parsimonious mechanisms, which can provide explanatory insight into how, where, and when various features are generated. We argue that as models such as these are incrementally improved through multiple rounds of mechanistic falsification and validation, we will generate virtual systems that embody deeper credible, actionable, explanatory insight into immune system-drug metabolism interactions within individuals.
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Affiliation(s)
- Brenden K. Petersen
- UCSF/UCB Joint Graduate Group in Bioengineering, University of California, Berkeley, California, United States of America
| | | | - C. Anthony Hunt
- UCSF/UCB Joint Graduate Group in Bioengineering, University of California, Berkeley, California, United States of America
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, California, United States of America
- * E-mail:
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Selwyn FP, Cui JY, Klaassen CD. RNA-Seq Quantification of Hepatic Drug Processing Genes in Germ-Free Mice. Drug Metab Dispos 2015; 43:1572-80. [PMID: 25956306 DOI: 10.1124/dmd.115.063545] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 05/07/2015] [Indexed: 11/22/2022] Open
Abstract
Intestinal bacteria have been shown to be important in regulating host intermediary metabolism and contributing to obesity. However, relatively less is known about the effect of intestinal bacteria on the expression of hepatic drug-processing genes in the host. This study characterizes the expression of hepatic drug-processing genes in germ-free (GF) mice using RNA-Seq. Total RNA were isolated from the livers of adult male conventional and GF C57BL/6J mice (n = 3 per group). In the livers of GF mice, the mRNA of the aryl hydrocarbon receptor target gene Cyp1a2 was increased 51%, and the mRNA of the peroxisome proliferator-activated receptor α (PPARα) target gene Cyp4a14 was increased 202%. Conversely, the mRNA of the constitutive androstane receptor (CAR) target gene Cyp2b10 was decreased 57%, and the mRNA of the pregnane X receptor target gene Cyp3a11 was decreased 87% in GF mice. Although other non-Cyp phase-1 enzymes in the livers of GF mice were only moderately affected, there was a marked down-regulation in the phase-2 enzymes glutathione S-transferases p1 and p2, as well as a marked up-regulation in the major bile acid transporters Na(+)-taurocholate cotransporting polypeptide and organic anion-transporting polypeptide 1b2, and the cholesterol transporter ATP-binding cassette transporter Abcg5/Abcg8. This study demonstrates that intestinal bacteria regulate the expression of a large number of drug-processing genes, which suggests that intestinal bacteria are responsible for some individual differences in drug responses.
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Affiliation(s)
- Felcy Pavithra Selwyn
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington
| | - Julia Yue Cui
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington
| | - Curtis D Klaassen
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington
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Shao YY, Huang J, Ma YR, Han M, Ma K, Qin HY, Rao Z, Wu XA. Serum serotonin reduced the expression of hepatic transporter Mrp2 and P-gp via regulating nuclear receptor CAR in PI-IBS rats. Can J Physiol Pharmacol 2015; 93:633-9. [PMID: 26053941 DOI: 10.1139/cjpp-2015-0039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Hepatic transporters and drug metabolizing enzymes (DMEs) play important roles in the pharmacological effects and (or) side-effects of many drugs, and are regulated by several mediators, including neurotransmitters. This work aimed to investigate whether serum levels of 5-hydroxytryptamine (5-HT) affected the expression of hepatic transporters or DMEs. The expression of hepatic transporters was assessed using the Western-blot technique in a 2,4,6-trinitrobenzenesulfonic-acid-induced rat model of post-infectious irritable bowel syndrome (PI-IBS), in which serum levels of 5-HT were significantly elevated. To further clarify the underlying mechanism, the 5-HT precursor 5-hydroxytryptophan (5-HTP) and the 5-HT depleting agent parachlorophenylalanine (pCPA) were applied to adjust serum levels of 5-HT. Serum levels of 5-HT were measured using LC-MS/MS; the expression of hepatic transporters, DMEs, and nuclear receptors were examined by Western-blot technique. Our results showed that in PI-IBS rats the expression of multidrug resistance protein 2 (Mrp2) was significantly decreased, while colonic enterochromaffin cell density and serum levels of 5-HT were all significantly increased. Moreover, 5-HTP treatment significantly increased serum levels of 5-HT and decreased the expression of Mrp2 and glycoprotein P (P-gp), whereas treatment with pCPA markedly decreased serum levels of 5-HT and increased the expression of Mrp2 and P-gp. Our results indicated that serum 5-HT regulates the expression of Mrp2 and P-gp, and the underlying mechanism may be related to the altered expression of the nuclear receptor constitutive androstane receptor (CAR).
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Affiliation(s)
- Yun-Yun Shao
- a Department of Pharmacy, First Hospital of Lanzhou University, Lanzhou 730000, China.,b School of Pharmaceutical, Lanzhou University, Lanzhou 730000, China
| | - Jing Huang
- a Department of Pharmacy, First Hospital of Lanzhou University, Lanzhou 730000, China.,b School of Pharmaceutical, Lanzhou University, Lanzhou 730000, China
| | - Yan-Rong Ma
- a Department of Pharmacy, First Hospital of Lanzhou University, Lanzhou 730000, China.,b School of Pharmaceutical, Lanzhou University, Lanzhou 730000, China
| | - Miao Han
- a Department of Pharmacy, First Hospital of Lanzhou University, Lanzhou 730000, China.,b School of Pharmaceutical, Lanzhou University, Lanzhou 730000, China
| | - Kang Ma
- a Department of Pharmacy, First Hospital of Lanzhou University, Lanzhou 730000, China.,b School of Pharmaceutical, Lanzhou University, Lanzhou 730000, China
| | - Hong-Yan Qin
- a Department of Pharmacy, First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Zhi Rao
- a Department of Pharmacy, First Hospital of Lanzhou University, Lanzhou 730000, China
| | - Xin-An Wu
- a Department of Pharmacy, First Hospital of Lanzhou University, Lanzhou 730000, China
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De Minicis S, Rychlicki C, Agostinelli L, Saccomanno S, Candelaresi C, Trozzi L, Mingarelli E, Facinelli B, Magi G, Palmieri C, Marzioni M, Benedetti A, Svegliati-Baroni G. Dysbiosis contributes to fibrogenesis in the course of chronic liver injury in mice. Hepatology 2014; 59:1738-49. [PMID: 23959503 DOI: 10.1002/hep.26695] [Citation(s) in RCA: 203] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Accepted: 08/03/2013] [Indexed: 12/12/2022]
Abstract
UNLABELLED Nonalcoholic fatty liver disease (NAFLD) may lead to hepatic fibrosis. Dietary habits affect gut microbiota composition, whereas endotoxins produced by Gram-negative bacteria stimulate hepatic fibrogenesis. However, the mechanisms of action and the potential effect of microbiota in the liver are still unknown. Thus, we sought to analyze whether microbiota may interfere with liver fibrogenesis. Mice fed control (CTRL) or high-fat diet (HFD) were subjected to either bile duct ligation (BDL) or CCl4 treatment. Previously gut-sterilized mice were subjected to microbiota transplantation by oral gavage of cecum content obtained from donor CTRL- or HFD-treated mice. Fibrosis, intestinal permeability, bacterial translocation, and serum endotoxemia were measured. Inflammasome components were evaluated in gut and liver. Microbiota composition (dysbiosis) was evaluated by Pyrosequencing. Fibrosis degree was increased in HFD+BDL versus CTRL+BDL mice, whereas no differences were observed between CTRL+CCl4 and HFD+CCl4 mice. Culture of mesenteric lymph nodes showed higher density of infection in HFD+BDL mice versus CTRL+BDL mice, suggesting higher bacterial translocation rate. Pyrosequencing revealed an increase in percentage of Gram-negative versus Gram-postive bacteria, a reduced ratio between Bacteroidetes and Firmicutes, as well as a dramatic increase of Gram-negative Proteobacteria in HFD+BDL versus CTRL+BDL mice. Inflammasome expression was increased in liver of fibrotic mice, but significantly reduced in gut. Furthermore, microbiota transplantation revealed more liver damage in chimeric mice fed CTRL diet, but receiving the microbiota of HFD-treated mice; liver damage was further enhanced by transplantation of selected Gram-negative bacteria obtained from cecum content of HFD+BDL-treated mice. CONCLUSIONS Dietary habits, by increasing the percentage of intestinal Gram-negative endotoxin producers, may accelerate liver fibrogenesis, introducing dysbiosis as a cofactor contributing to chronic liver injury in NAFLD.
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Affiliation(s)
- Samuele De Minicis
- Department of Gastroenterology, Università Politecnica delle Marche, Ancona, Italy
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Lavoie DSG, Pailleux F, Vachon P, Beaudry F. Characterization of xylazine metabolism in rat liver microsomes using liquid chromatography-hybrid triple quadrupole-linear ion trap-mass spectrometry. Biomed Chromatogr 2013; 27:882-8. [DOI: 10.1002/bmc.2875] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 01/07/2013] [Accepted: 01/08/2013] [Indexed: 11/08/2022]
Affiliation(s)
- David St-Germain Lavoie
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de biomedicine vétérinaire, Faculté de Médecine Vétérinaire; Université de Montréal; Saint-Hyacinthe Québec Canada
| | - Floriane Pailleux
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de biomedicine vétérinaire, Faculté de Médecine Vétérinaire; Université de Montréal; Saint-Hyacinthe Québec Canada
- UMR 5280 CNRS Université de Lyon 1, Institut des Sciences Analytiques; Université de Lyon; 69622 Villeurbanne cedex France
| | - Pascal Vachon
- Département de biomedicine vétérinaire, Faculté de Médecine Vétérinaire; Université de Montréal; Saint-Hyacinthe Québec Canada
| | - Francis Beaudry
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de biomedicine vétérinaire, Faculté de Médecine Vétérinaire; Université de Montréal; Saint-Hyacinthe Québec Canada
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Schiffman SS, Rother KI. Sucralose, a synthetic organochlorine sweetener: overview of biological issues. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2013; 16:399-451. [PMID: 24219506 PMCID: PMC3856475 DOI: 10.1080/10937404.2013.842523] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Sucralose is a synthetic organochlorine sweetener (OC) that is a common ingredient in the world's food supply. Sucralose interacts with chemosensors in the alimentary tract that play a role in sweet taste sensation and hormone secretion. In rats, sucralose ingestion was shown to increase the expression of the efflux transporter P-glycoprotein (P-gp) and two cytochrome P-450 (CYP) isozymes in the intestine. P-gp and CYP are key components of the presystemic detoxification system involved in first-pass drug metabolism. The effect of sucralose on first-pass drug metabolism in humans, however, has not yet been determined. In rats, sucralose alters the microbial composition in the gastrointestinal tract (GIT), with relatively greater reduction in beneficial bacteria. Although early studies asserted that sucralose passes through the GIT unchanged, subsequent analysis suggested that some of the ingested sweetener is metabolized in the GIT, as indicated by multiple peaks found in thin-layer radiochromatographic profiles of methanolic fecal extracts after oral sucralose administration. The identity and safety profile of these putative sucralose metabolites are not known at this time. Sucralose and one of its hydrolysis products were found to be mutagenic at elevated concentrations in several testing methods. Cooking with sucralose at high temperatures was reported to generate chloropropanols, a potentially toxic class of compounds. Both human and rodent studies demonstrated that sucralose may alter glucose, insulin, and glucagon-like peptide 1 (GLP-1) levels. Taken together, these findings indicate that sucralose is not a biologically inert compound.
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Affiliation(s)
- Susan S. Schiffman
- Department of Electrical and Computer Engineering, College of Engineering, North Carolina State University, Raleigh, North Carolina, USA
- Address correspondence to Susan S. Schiffman, PhD, Department of Electrical and Computer Engineering, College of Engineering, North Carolina State University, Raleigh, NC 27695-7911, USA. E-mail:
| | - Kristina I. Rother
- Section on Pediatric Diabetes & Metabolism, Diabetes, Endocrinology, and Obesity Branch, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), National Institutes of Health, Bethesda, Maryland, USA
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Veilleux-Lemieux D, Beaudry F, Hélie P, Vachon P. Effects of endotoxemia on the pharmacodynamics and pharmacokinetics of ketamine and xylazine anesthesia in Sprague-Dawley rats. VETERINARY MEDICINE-RESEARCH AND REPORTS 2012; 3:99-109. [PMID: 30101090 DOI: 10.2147/vmrr.s35666] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Purpose To evaluate the effects of endotoxemia on the pharmacokinetics and pharmacodynamics of ketamine and xylazine anesthesia in Sprague-Dawley rats. Methods Sprague-Dawley rats received ketamine (80 mg/kg) and xylazine (5 mg/kg) intramuscularly following the intraperitoneal administration of different lipopolysaccharide concentrations (1, 10, and 100 µg/kg) to simulate different levels of endotoxemia. Results were compared to control animals receiving saline intraperitoneally. During anesthesia, a toe pinch was performed to evaluate anesthesia duration, and selected physiological parameters (heart and respiratory rates, oxygen saturation, and rectal temperature) were taken. Blood samples were also taken during anesthesia at selected time points for the analysis of plasmatic ketamine and xylazine concentrations by liquid chromatography-mass spectrometry. Blood samples were taken 1 week prior to and 24 hours following anesthesia for blood biochemistry. Results Anesthesia duration significantly increased for moderate (10 µg/kg) and high (100 µg/kg) lipopolysaccharide groups. Liver histopathology showed minor to moderate necrosis in all lipopolysaccharide groups in some animals. The most important physiological change that occurred was a decrease in oxygen saturation, and for blood biochemistry a decrease in serum albumin. Ketamine pharmacokinetics were not affected except for the moderate (10 µg/kg) lipopolysaccharide group where a decrease in the area under the plasma concentration-time curve from time zero to the last measurable concentration, a decrease in half-life, and an increase in the clearance were observed. For xylazine, the area under the plasma concentration-time curve increased and the clearance decreased in the moderate (10 µg/kg) and high (100 µg/kg) lipopolysaccharide groups. Conclusion During ketamine-xylazine anesthesia, endotoxemia may alter xylazine pharmacokinetics and selected biochemical and physiological parameters, suggesting that anesthetic drug dosages could be modified for a more rapid recovery.
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Affiliation(s)
- Daphnée Veilleux-Lemieux
- Department of Veterinary Biomedicine, University of Montreal, Saint-Hyacinthe, .,Department of Veterinary Services, Laval University, Quebec
| | - Francis Beaudry
- Department of Veterinary Biomedicine, University of Montreal, Saint-Hyacinthe,
| | - Pierre Hélie
- Department of Pathology and Microbiology, University of Montreal, Saint-Hyacinthe, Canada
| | - Pascal Vachon
- Department of Veterinary Biomedicine, University of Montreal, Saint-Hyacinthe,
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Mason CW, Buhimschi IA, Buhimschi CS, Dong Y, Weiner CP, Swaan PW. ATP-binding cassette transporter expression in human placenta as a function of pregnancy condition. Drug Metab Dispos 2011; 39:1000-7. [PMID: 21430233 DOI: 10.1124/dmd.111.038166] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Fetal drug exposure is determined by the type and concentration of placental transporters, and their regulation is central to the development of new treatments and delivery strategies for pregnant women and their fetuses. We tested the expression of several clinically important transporters in the human placenta associated with various pregnancy conditions (i.e., labor, preeclampsia, and preterm labor-inflammation). Placentas were obtained from five groups of women at the time of primary cesarean section: 1) term no labor; 2) term labor; 3) preterm no labor (delivered for severe preeclampsia); 4) preterm labor without inflammation (PTLNI); and 5) preterm labor with inflammation (PTLI). Samples were analyzed by Western blot and immunohistochemistry to identify changes in protein expression. Relative mRNA expression was determined by quantitative real-time polymerase chain reaction. A functional genomic approach was used to identify placental gene expression and elucidate molecular events that underlie the given condition. Placental expression of ATP-binding cassette transporters from women in labor and women with preeclampsia was unaltered. Multidrug resistance protein 1 (MDR1) and breast cancer resistance protein (BCRP) and mRNA expression increased in placentas of women with preterm labor with inflammation. Molecular pathways of genes up-regulated in PTLI samples included cytokine-cytokine receptor interactions and inflammatory response compared with those in the PTLNI group. The mRNA expression of MDR1 and BCRP was correlated with that of interleukin-8, which also increased significantly in PTLI samples. These data suggest that the transfer of drugs across the placenta may be altered in preterm pregnancy conditions associated with inflammation through changes in MDR1 and BCRP.
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Affiliation(s)
- Cifford W Mason
- Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD 21201, USA
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Endotoxin does not alter the pharmacokinetics of micafungin, but it impairs biliary excretion of micafungin via multidrug resistance-associated protein 2 (ABCC2/Mrp2) in rats. J Infect Chemother 2011; 17:207-13. [DOI: 10.1007/s10156-010-0118-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Accepted: 08/13/2010] [Indexed: 10/19/2022]
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Gu X, Manautou JE. Regulation of hepatic ABCC transporters by xenobiotics and in disease states. Drug Metab Rev 2010; 42:482-538. [PMID: 20233023 DOI: 10.3109/03602531003654915] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The subfamily of ABCC transporters consists of 13 members in mammals, including the multidrug resistance-associated proteins (MRPs), sulfonylurea receptors (SURs), and the cystic fibrosis transmembrane conductance regulator (CFTR). These proteins play roles in chemical detoxification, disposition, and normal cell physiology. ABCC transporters are expressed differentially in the liver and are regulated at the transcription and translation level. Their expression and function are also controlled by post-translational modification and membrane-trafficking events. These processes are tightly regulated. Information about alterations in the expression of hepatobiliary ABCC transporters could provide important insights into the pathogenesis of diseases and disposition of xenobiotics. In this review, we describe the regulation of hepatic ABCC transporters in humans and rodents by a variety of xenobiotics, under disease states and in genetically modified animal models deficient in transcription factors, transporters, and cell-signaling molecules.
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Affiliation(s)
- Xinsheng Gu
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, 06269, USA
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Jung HY, Kang HE, Choi YH, Kim SH, Lee MG. Time-dependent effects of Klebsiella pneumoniae endotoxin on the pharmacokinetics of chlorzoxazone and its main metabolite, 6-hydroxychlorzoxazone, in rats: restoration of the parameters in 96 hour in KPLPS rats to control levels. Biopharm Drug Dispos 2009; 30:485-93. [PMID: 19753555 DOI: 10.1002/bdd.685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
It has been reported that chlorzoxazone (CZX) was primarily metabolized via hepatic Cyp2e1 to form 6-hydroxychlorzoxazone (OH-CZX) in rats, and the activity of aniline hydroxylase (a Cyp2e1 marker) in the liver was significantly decreased in rats at 24 h after pretreatment with lipopolysaccharide derived from Klebsiella pneumoniae (24 h KPLPS rats), whereas the levels were not changed at 2 h and 96 h in the KPLPS rats. Thus, the time-dependent pharmacokinetic parameters of CZX and OH-CZX were evaluated after the intravenous administration of CZX (20 mg/kg) to control rats, and the 2 h, 24 h and 96 h KPLPS rats along with the time-dependent changes in the protein expression of hepatic Cyp2e1. After the intravenous administration of CZX to 24 h KPLPS rats, the AUC(0-2 h) of OH-CZX and AUC(OH-CZX, 0-2 h)/AUC(CZX) were significantly smaller (by 40.5% and 71.2%, respectively) than those of controls due to the significant decrease (by 75.3%) in the protein expression of hepatic Cyp2e1. However, in 96 h KPLPS rats, the pharmacokinetic parameters of both CZX and OH-CZX were unchanged compared with controls due to the restoration of the protein expression of hepatic Cyp2e1 to control levels. These observations highlighted the existence of the time-dependent effects of KPLPS on the pharmacokinetics of CZX and OH-CZX in rats.
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Affiliation(s)
- Hye Y Jung
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, South Korea
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Yang KH, Lee MG. Effects of endotoxin derived from Escherichia coli lipopolysaccharide on the pharmacokinetics of drugs. Arch Pharm Res 2009; 31:1073-86. [DOI: 10.1007/s12272-001-1272-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2008] [Revised: 07/01/2008] [Accepted: 08/11/2008] [Indexed: 10/21/2022]
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Time-dependent effects of Klebsiella pneumoniae endotoxin on the telithromycin pharmacokinetics in rats; restoration of the parameters in 96-hour KPLPS rats to the control levels. Pulm Pharmacol Ther 2008; 21:860-5. [PMID: 18976719 DOI: 10.1016/j.pupt.2008.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2008] [Revised: 09/10/2008] [Accepted: 09/17/2008] [Indexed: 11/22/2022]
Abstract
OBJECTIVES It has been reported that telithromycin is primarily metabolized via hepatic CYP3A4 and 3A1/2 in humans and rats, respectively, and that the protein expression of hepatic CYP3A subfamily significantly decreased (59.1% decrease) in 24-h KPLPS rats (lipopolysaccharide derived from Klebsiella pneumoniae; the protein expression was measured 24h after KPLPS administration) compared with that in control rats, but restored to that in control rats in 96-h KPLPS rats. METHODS The pharmacokinetic parameters of telithromycin were compared after intravenous and oral administration at a dose of 50mg/kg to control, 24-h KPLPS, and 96-h KPLPS rats. RESULTS After both intravenous and oral administration of telithromycin to 24-h KPLPS rats, the AUC of telithromycin became significantly greater (68.2% and 88.7% increase for intravenous and oral administration, respectively) and this could have been due to the significantly slower CL(NR) (45.7% decrease). Because telithromycin is a low hepatic extraction ratio drug, the slower CL(NR) could have been due to the decreased protein expression of the hepatic CYP3A subfamily compared with that in control rats, and was supported by the significantly slower in vitro CL(int) in hepatic microsomes (13.1% decrease). However, in 96-h KPLPS rats, the pharmacokinetic parameters of telithromycin restored fully to those in control rats due to restoration of the protein expression of the hepatic CYP3A subfamily to that in control rats. The protein expression of the intestinal CYP3A subfamily was comparable among three groups of rats. CONCLUSIONS These findings indicate the existence of the time-dependent effects of KPLPS on the pharmacokinetics of telithromycin in rats.
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Systemic multicompartmental effects of the gut microbiome on mouse metabolic phenotypes. Mol Syst Biol 2008; 4:219. [PMID: 18854818 PMCID: PMC2583082 DOI: 10.1038/msb.2008.56] [Citation(s) in RCA: 251] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Revised: 07/15/2008] [Indexed: 02/08/2023] Open
Abstract
To characterize the impact of gut microbiota on host metabolism, we investigated the multicompartmental metabolic profiles of a conventional mouse strain (C3H/HeJ) (n=5) and its germ-free (GF) equivalent (n=5). We confirm that the microbiome strongly impacts on the metabolism of bile acids through the enterohepatic cycle and gut metabolism (higher levels of phosphocholine and glycine in GF liver and marked higher levels of bile acids in three gut compartments). Furthermore we demonstrate that (1) well-defined metabolic differences exist in all examined compartments between the metabotypes of GF and conventional mice: bacterial co-metabolic products such as hippurate (urine) and 5-aminovalerate (colon epithelium) were found at reduced concentrations, whereas raffinose was only detected in GF colonic profiles. (2) The microbiome also influences kidney homeostasis with elevated levels of key cell volume regulators (betaine, choline, myo-inositol and so on) observed in GF kidneys. (3) Gut microbiota modulate metabotype expression at both local (gut) and global (biofluids, kidney, liver) system levels and hence influence the responses to a variety of dietary modulation and drug exposures relevant to personalized health-care investigations.
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Ueyama J, Nadai M, Zhao YL, Kanazawa H, Takagi K, Kondo T, Takagi K, Wakusawa S, Abe F, Saito H, Miyamoto KI, Hasegawa T. Effect of thalidomide on endotoxin-induced decreases in activity and expression of hepatic cytochrome P450 3A2. Biol Pharm Bull 2008; 31:1596-600. [PMID: 18670095 DOI: 10.1248/bpb.31.1596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Thalidomide has been reported to inhibit the production of tumor necrosis factor-alpha (TNF-alpha) and nitric oxide (NO) that are involved in the down-regulation of hepatic cytochrome P450 (CYP) induced by endotoxin. In the present study, we investigated the effects of thalidomide on endotoxin-induced decreases in the activity and expression of hepatic CYP3A2 in rats. Thalidomide (50 mg/kg) was administered orally 22 h and 2 h before intraperitoneal injection of endotoxin (1 mg/kg). Twenty-four hours after the injection of endotoxin, antipyrine clearance experiments were conducted, in which the rats were sacrificed and protein levels of hepatic CYP3A2 were measured. There were no significant differences in the histopathological changes in the liver between the endotoxin-treated and endotoxin plus thalidomide-treated rats. Thalidomide had no effect on the systemic clearance of antipyrine, which is a proper indicator for hepatic CYP3A2 activity, whereas it enhanced endotoxin-induced decrease in the systemic clearance of antipyrine. Western blot analysis revealed that thalidomide had no effect on the protein levels of hepatic CYP3A2, whereas it enhanced the down-regulation of hepatic CYP3A2 by endotoxin. However, there were no significant differences in the concentrations of TNF-alpha and NO in plasma between the endotoxin-treated and endotoxin plus thalidomide-treated rats. The present findings suggest that thalidomide enhances endotoxin-induced decreases in the activity and expression of hepatic CYP3A2.
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Affiliation(s)
- Jun Ueyama
- Department of Medical Technology, Nagoya University School of Health Sciences, Nagoya, Japan
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Yang KH, Jung YS, Lee DY, Lee JH, Kim YC, Lee MG. Time-Dependent Effects of Klebsiella Pneumoniae Endotoxin (KPLPS) on the Pharmacokinetics of Theophylline in Rats: Return of the Parameters in 96-Hour KPLPS Rats to the Control Levels. Drug Metab Dispos 2008; 36:811-5. [DOI: 10.1124/dmd.107.018499] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Nadai M, Kato M, Yasui K, Kimura M, Zhao YL, Ueyama J, Tsunekawa Y, Yoshizumi H, Hasegawa T. Lack of effect of aciclovir on metabolism of theophylline and expression of hepatic cytochrome P450 1A2 in rats. Biol Pharm Bull 2007; 30:562-8. [PMID: 17329857 DOI: 10.1248/bpb.30.562] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
There is an interesting clinical report indicating that aciclovir, which is mainly excreted into urine, decreases the systemic clearance of theophylline by inhibiting cytochrome P450 (CYP) 1A2-mediated metabolism. In this study, we investigated the effect of aciclovir on the metabolism of theophylline, and on the activity and expression of hepatic CYP1A2 in rats. Theophylline (10 mg/kg) was injected intravenously into rats treated with two different dosages of aciclovir. When theophylline was simultaneously administered with aciclovir (50 mg/kg), the systemic clearance of theophylline and metabolic clearance of its major metabolites, 1-methyluric acid and 1,3-dimethyluric acid, were unchanged. In place of theophylline, when 1-methyl-3-propylxanthine (2.5 mg/kg), which is almost metabolized by CYP1A2 in rats, was coadministered intravenously with aciclovir (50 mg/kg), the pharmacokinetics of 1-methyl-3-propylxanthine was also unchanged. When theophylline was administered to rats pretreated with repeated intraperitoneal injections of aciclovir (25 mg/kg twice daily for 3 d), no significant differences in the systemic clearance of theophylline and its metabolic clearance to 1-methyluric acid and 1,3-dimethyluric acid were observed between the control and aciclovir-treated rats. This dosage of aciclovir did not change the activity of 7-ethoxyresorufin O-dealkylation, which is represented as CYP1A2 activity. In Western blot analysis, no significant change in the protein levels of hepatic CYP1A2 was observed between the control and aciclovir-treated rats. The present study suggests that aciclovir has no effect on the pharmacokinetics and metabolism of theophylline and on the activity and expression of hepatic CYP1A2 in rats.
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Affiliation(s)
- Masayuki Nadai
- Department of Pharmaceutics, Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tenpaku, Nagoya 468-8503, Japan
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Choi YH, Lee I, Lee MG. Effects of bacterial lipopolysaccharide on the pharmacokinetics of metformin in rats. Int J Pharm 2007; 337:194-201. [PMID: 17275228 DOI: 10.1016/j.ijpharm.2007.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2006] [Revised: 12/02/2006] [Accepted: 01/01/2007] [Indexed: 10/23/2022]
Abstract
It was reported that the hepatic microsomal cytochrome P450 (CYP) 2C11, 2D1, and 3A1 (not via the CYP1A2, 2B1/2, and 2E1) were involved in the metabolism of metformin in rats. It was also reported that the expressions of CYP2C11 and 3A2 decreased in rats pretreated with Klebsiella pneumoniae lipopolysaccharide (KPLPS). Therefore, the pharmacokinetic parameters of metformin could be changed in rats pretreated with KPLPS. Hence, the pharmacokinetic parameters of metformin were compared after both intravenous and oral administration of the drug at a dose of 100mg/kg to control rats and rats pretreated with KPLPS. After intravenous administration of metformin to rats pretreated with KPLPS, the total area under the plasma concentration-time curve from time 0 to infinity (AUC) of the drug was significantly greater (40.5% increase) than the controls due to significantly smaller CL value (27.7% decrease) than the controls. The significantly smaller CL value could be due to significantly smaller both the CL(R) and CL(NR) values (34.0% and 18.1% decrease, respectively) than the controls. The significantly smaller CL(NR) value could be due to decrease in the expressions of CYP2C11 and 3A2 in rats pretreated with KPLPS. After oral administration of metformin, the AUC of the drug was not significantly different between two groups of rats, and this may be at least partly due to decrease in absorption from the gastrointestinal tract compared with the controls.
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Affiliation(s)
- Young H Choi
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, San 56-1, Shinlim-Dong, Kwanak-Gu, Seoul 151-742, South Korea
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Ueyama J, Wang D, Kondo T, Saito I, Takagi K, Takagi K, Kamijima M, Nakajima T, Miyamoto KI, Wakusawa S, Hasegawa T. Toxicity of diazinon and its metabolites increases in diabetic rats. Toxicol Lett 2007; 170:229-37. [PMID: 17442507 DOI: 10.1016/j.toxlet.2007.03.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2007] [Revised: 03/19/2007] [Accepted: 03/19/2007] [Indexed: 11/20/2022]
Abstract
The effect of diazinon (DZN) on the activities of cholinesterase (ChE) in plasma and acetylcholinesterase (AChE) in erythrocyte and brain was investigated in normal and streptozotocin-induced diabetic rats. Hepatic drug-metabolizing enzyme activity was also estimated by measuring the systemic clearance of antipyrine, and the expression of hepatic cytochrome P450 (CYP) 3A2 and CYP1A2, which is closely related to the metabolism from DZN to DZN-oxon, a strong inhibitor of both ChE and AChE. No significant differences in the activities of ChE in plasma and AChE in erythrocyte were observed between normal and diabetic rats. Treatment with DZN significantly decreased these activities in diabetic rats more than in normal rats 6h after injection (6.5 mg/kg). Treatment with DZN significantly decreased the activity of AChE in brain of diabetic rats than normal rats 3h after injection (65 mg/kg), although no significant difference in the activity was found between normal and diabetic rats. The urinary recovery of diethylphosphate (DEP), a metabolite of DZN-oxon, was significantly increased in diabetic rats, but that of diethylthiophosphate (DETP), a metabolite of DZN, was unchanged. Significant increases in the systemic clearance of antipyrine and protein levels of hepatic CYP1A2, not CYP3A2, were observed in diabetic rats. These results suggest the possibility that a metabolite of DZN, DZN-oxon, causes higher toxicity in diabetic rats due to the enhancement of hepatic CYP1A2-mediated metabolism of DZN.
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Affiliation(s)
- Jun Ueyama
- Department of Medicinal Informatics, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
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Nosaka H, Nadai M, Kato M, Yasui K, Yoshizumi H, Miyoshi M, Zhao YL, Baba K, Takagi K, Hasegawa T. Effect of a newly developed ketolide antibiotic, telithromycin, on metabolism of theophylline and expression of cytochrome P450 in rats. Life Sci 2006; 79:50-6. [PMID: 16423372 DOI: 10.1016/j.lfs.2005.12.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2005] [Revised: 12/12/2005] [Accepted: 12/14/2005] [Indexed: 10/25/2022]
Abstract
The effects of a newly-developed ketolide antibiotic, telithromycin, on the metabolism of theophylline and the expression of hepatic cytochrome P450 (CYP) 1A2 and CYP3A2 were investigated in rats. Telithromycin at a high dose (100 mg/kg of body weight) was injected intraperitoneally once a day for 3 days. Twenty-four hours (day 4) after the final administration of telithromycin, theophylline (10 mg/kg) was administered intravenously. The presence of telithromycin significantly delayed the disappearance of theophylline from plasma. Parameters related to the pharmacokinetic interaction between theophylline and telithromycin were examined by noncompartmental methods. A significant decrease in the systemic clearance of theophylline was observed in the presence of telithromycin. Pretreatment with telithromycin significantly decreased the metabolic clearance of the major metabolites, 1-methyluric acid and 1,3-dimethyluric acid, with no change in the renal clearance of theophylline, suggesting that the decreased systemic clearance of theophylline by telithromycin is due to reduction of their metabolic clearance. Pretreatment with telithromycin significantly decreased the activity of 7-ethoxyresorufin O-deethylation and testosterone 6 beta-hydroxylation, suggesting that telithromycin decreases the activity of hepatic CYP1A2 and CYP3A2. Western blot analysis revealed that telithromycin significantly decreased the protein levels of CYP1A2 and CYP3A2 in the liver, which could explain the observed decreases in the systemic clearance of theophylline and metabolic clearance of 1-methyluric acid and 1,3-dimethyluric acid. The present study suggests that telithromycin at the dose used in this study alters the pharmacokinetics and metabolism of theophylline, due to reductions in the activity and expression of hepatic CYP1A2 and CYP3A2.
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Affiliation(s)
- Hiroyuki Nosaka
- Department of Medical Technology, Nagoya University School of Health Sciences, Daikominami, Higashi-ku, Nagoya 461-8673, Japan
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