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Bastawy EM, Eraslan IM, Voglsanger L, Suphioglu C, Walker AJ, Dean OM, Read JL, Ziemann M, Smith CM. Novel Insights into Changes in Gene Expression within the Hypothalamus in Two Asthma Mouse Models: A Transcriptomic Lung-Brain Axis Study. Int J Mol Sci 2024; 25:7391. [PMID: 39000495 PMCID: PMC11242700 DOI: 10.3390/ijms25137391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 06/28/2024] [Accepted: 07/01/2024] [Indexed: 07/16/2024] Open
Abstract
Patients with asthma experience elevated rates of mental illness. However, the molecular links underlying such lung-brain crosstalk remain ambiguous. Hypothalamic dysfunction is observed in many psychiatric disorders, particularly those with an inflammatory component due to many hypothalamic regions being unprotected by the blood-brain barrier. To gain a better insight into such neuropsychiatric sequelae, this study investigated gene expression differences in the hypothalamus following lung inflammation (asthma) induction in mice, using RNA transcriptome profiling. BALB/c mice were challenged with either bacterial lipopolysaccharide (LPS, E. coli) or ovalbumin (OVA) allergens or saline control (n = 7 per group), and lung inflammation was confirmed via histological examination of postmortem lung tissue. The majority of the hypothalamus was micro-dissected, and total RNA was extracted for sequencing. Differential expression analysis identified 31 statistically significant single genes (false discovery rate FDR5%) altered in expression following LPS exposure compared to controls; however, none were significantly changed following OVA treatment, suggesting a milder hypothalamic response. When gene sets were examined, 48 were upregulated and 8 were downregulated in both asthma groups relative to controls. REACTOME enrichment analysis suggests these gene sets are involved in signal transduction metabolism, immune response and neuroplasticity. Interestingly, we identified five altered gene sets directly associated with neurotransmitter signaling. Intriguingly, many of these altered gene sets can influence mental health and or/neuroinflammation in humans. These findings help characterize the links between asthma-induced lung inflammation and the brain and may assist in identifying relevant pathways and therapeutic targets for future intervention.
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Affiliation(s)
- Eslam M Bastawy
- Faculty of Health, School of Medicine, Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong 3216, Australia
| | - Izel M Eraslan
- Faculty of Health, School of Medicine, Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong 3216, Australia
| | - Lara Voglsanger
- Faculty of Health, School of Medicine, Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong 3216, Australia
| | - Cenk Suphioglu
- Faculty of Science, Engineering and Built Environment, School of Life and Environmental Sciences, Deakin University, Geelong 3216, Australia
| | - Adam J Walker
- Faculty of Health, School of Medicine, Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong 3216, Australia
| | - Olivia M Dean
- Faculty of Health, School of Medicine, Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong 3216, Australia
- Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, Melbourne 3052, Australia
| | - Justin L Read
- Faculty of Health, School of Medicine, Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong 3216, Australia
| | - Mark Ziemann
- Faculty of Science, Engineering and Built Environment, School of Life and Environmental Sciences, Deakin University, Geelong 3216, Australia
- Burnet Institute, Melbourne 3004, Australia
| | - Craig M Smith
- Faculty of Health, School of Medicine, Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong 3216, Australia
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Khandia R, Pandey MK, Khan AA, Baklanov I, Alanazi AM, Nepali P, Gurjar P, Choudhary OP. Synthetic biology approach revealed enhancement in haeme oxygenase-1 gene expression by codon pair optimization while reduction by codon deoptimization. Ann Med Surg (Lond) 2024; 86:1359-1369. [PMID: 38463112 PMCID: PMC10923308 DOI: 10.1097/ms9.0000000000001465] [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: 09/13/2023] [Accepted: 10/23/2023] [Indexed: 03/12/2024] Open
Abstract
Haem oxygenase-1 (HO-1) is a ubiquitously expressed gene involved in cellular homoeostasis, and its imbalance in expression results in various disorders. To alleviate such disorders, HO-1 gene expression needs to be modulated. Codon usage bias results from evolutionary forces acting on any nucleotide sequence and determines the gene expression. Like codon usage bias, codon pair bias also exists, playing a role in gene expression. In the present study, HO-1 gene was recoded by manipulating codon and codon pair bias, and four such constructs were made through codon/codon pair deoptimization and codon/codon pair optimization to reduce and enhance the HO-1 gene expression. Codon usage analysis was done for these constructs for four tissues brain, heart, pancreas and liver. Based on codon usage in different tissues, gene expression of these tissues was determined in terms of the codon adaptation index. Based on the codon adaptation index, minimum free energy, and translation efficiency, constructs were evaluated for enhanced or decreased HO-1 expression. The analysis revealed that for enhancing gene expression, codon pair optimization, while for reducing gene expression, codon deoptimization is efficacious. The recoded constructs developed in the study could be used in gene therapy regimens to cure HO-1 over or underexpression-associated disorders.
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Affiliation(s)
- Rekha Khandia
- Department of Biochemistry and Genetics, Barkatullah University, Bhopal, MP, India
| | - Megha Katare Pandey
- Translational Medicine Center, All India Institute of Medical Sciences, Bhopal, MP, India
| | - Azmat Ali Khan
- Pharmaceutical Biotechnology Laboratory, Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Igor Baklanov
- Department of Philosophy, North Caucasus Federal University, Pushkina, Stavropol, Russia
| | - Amer M. Alanazi
- Pharmaceutical Biotechnology Laboratory, Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Prakash Nepali
- Bhimad Primary Health Care Center, Government of Nepal, Tanahun, Nepal
| | - Pankaj Gurjar
- Centre for Global Health Research, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
- Department of Science and Engineering, Novel Global Community Educational Foundation, Hebersham, NSW, Australia
| | - Om Prakash Choudhary
- Department of Veterinary Anatomy, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University (GADVASU), Rampura Phul, Bathinda, Punjab, India
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3
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Li W, Cao J, Liu J, Chen S, Dai M, Zhang M, Hou X, Wang J, Kang Z. Protective effect of Tetrandrine on optic nerve by inhibiting glial activation through NF-κB pathway. Heliyon 2024; 10:e24749. [PMID: 38370256 PMCID: PMC10867623 DOI: 10.1016/j.heliyon.2024.e24749] [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: 01/23/2023] [Revised: 12/09/2023] [Accepted: 01/12/2024] [Indexed: 02/20/2024] Open
Abstract
Introduction This study aimed to explore the effect and molecular mechanism of Tetrandrine (Tet) onlipopolysaccharide (LPS)-induceduveitis andoptic nerve injury in vivo and in vitro. Methods Uveitis was induced by LPS injected into the hindlimb foot pad of Wistar rats and was intervened by retroeyeball injection of Tet (100 nM, 1 μM or 10 μM).The anterior segment inflammation was observed by slit lamp. Tunelassay was used to detect the survival state of ganglion cells and nuclear layers of inner and outer. The detection of characteristic markers in different activation states of glial cells were performed by qualitative and quantitative test of immunofluorescence and western blotting. Also, western blotting was used to detect the expression of inflammatory factors in retina and the activation of nuclear factor kappa B (NF-κB) signal pathway. Meanwhile, routine blood test and function of liver and renal were performed. Results The ciliary hyperemia was obvious, and the iris vessels were dilated and tortuous in rats with LPS-induced uveitis. Tet-pretreated obviously elieved these symptoms. In addition, the dilation and hyperemia in Tet group were alleviated compared with LPS group, and the inflammatory scores in Tetgroup were significantly lower than those of LPS group. TUNEL Staining showed that the number ofretinal ganglion cell (RGCs) in Tetgroup was slightly less than that in normal group, but significantly more than that in LPS group, and the cells arranged orderly. Besides, the number of apoptotic cells was significantly less than that in LPS group. Tet reduced LPS-activated gliocyte in a dose-dependent manner. Tumour necrosis factor alpha (TNF-α), interleukin (IL)-1β, interferon gamma (γ-IFN) and IL-2 in retina were increased by LPS but decreased significantly viaTet-pretreatment. Moreover, LPS activate NF-κB signal pathway, while Tet efficiently inhibited this effect.Furthermore, injection of Tet did not damage theroutineblood, liver and kidney. Conclusions Retrobulbar injection of Tet significantly alleviatedLPS-induced uveitisand optic nerve injuryof rats by activating gliocyte and NF-κB signaling pathway.
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Affiliation(s)
- Weiyi Li
- Department of Ophthalmology, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, 518020, Guangdong, China
- School of Ophthalmology & Optometry Affiliated to Shenzhen University, Shenzhen, 518040, Guangdong, China
- Eye Hospital, China Academy of Chinese Medical Sciences, Shijingshan, 100040, Beijing, China
| | - Jing Cao
- Yinan Branch of Qilu Hospital of Shandong University, Linyi, 276300, Shandong, China
| | - Jian Liu
- Eye Hospital, China Academy of Chinese Medical Sciences, Shijingshan, 100040, Beijing, China
| | - Shuiling Chen
- Eye Hospital, China Academy of Chinese Medical Sciences, Shijingshan, 100040, Beijing, China
| | - Min Dai
- Eye Hospital, China Academy of Chinese Medical Sciences, Shijingshan, 100040, Beijing, China
| | - Mingming Zhang
- Eye Hospital, China Academy of Chinese Medical Sciences, Shijingshan, 100040, Beijing, China
| | - Xinyue Hou
- Eye Hospital, China Academy of Chinese Medical Sciences, Shijingshan, 100040, Beijing, China
| | - Jianquan Wang
- Eye Hospital, China Academy of Chinese Medical Sciences, Shijingshan, 100040, Beijing, China
| | - Zefeng Kang
- Eye Hospital, China Academy of Chinese Medical Sciences, Shijingshan, 100040, Beijing, China
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Bauer N, Liu D, Nguyen T, Wang B. Unraveling the Interplay of Dopamine, Carbon Monoxide, and Heme Oxygenase in Neuromodulation and Cognition. ACS Chem Neurosci 2024; 15:400-407. [PMID: 38214656 PMCID: PMC10853931 DOI: 10.1021/acschemneuro.3c00742] [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: 11/15/2023] [Revised: 12/13/2023] [Accepted: 12/19/2023] [Indexed: 01/13/2024] Open
Abstract
The dopaminergic system plays important roles in neuromodulation, including prominent roles in complex neurological functions such as cognition, reward, motivation, and memory. Understandably, the highly complex nature of such physiological functions means that their regulation is intertwined with other signaling pathways, as has been demonstrated by numerous studies. Contrary to its public perception of being poisonous at all concentrations, carbon monoxide (CO) is produced endogenously from heme degradation by heme oxygenase (HO) as part of the physiological process of red blood cell turnover. Physiological concentrations of CO can reach high micromolar ranges in the hemoglobin bound form. Low-dose CO has shown therapeutic effects in numerous animal models, including traumatic brain injury via engaging various hemoprotein targets. As such, the HO-CO axis has been shown to offer beneficial effects in organ protection, anti-inflammation, and neuroprotection, among many others. Further, a large number of publications have shown the interactions among CO, HO, and the dopaminergic system. In this review, we critically examine such experimental evidence in a holistic fashion and in the context of a possible dopamine-HO-CO signaling axis. We hope that this Perspective will stimulate additional investigations into the molecular connectivity related to this possible axis and open doors to the development of novel therapeutics that impact the dopaminergic system.
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Affiliation(s)
- Nicola Bauer
- Department of Chemistry and
Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Dongning Liu
- Department of Chemistry and
Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - TanPhat Nguyen
- Department of Chemistry and
Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Binghe Wang
- Department of Chemistry and
Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
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5
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Shin J, Choi LS, Jeon HJ, Lee HM, Kim SH, Kim KW, Ko W, Oh H, Park HS. Synthetic Glabridin Derivatives Inhibit LPS-Induced Inflammation via MAPKs and NF-κB Pathways in RAW264.7 Macrophages. Molecules 2023; 28:molecules28052135. [PMID: 36903379 PMCID: PMC10004008 DOI: 10.3390/molecules28052135] [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: 01/20/2023] [Revised: 02/14/2023] [Accepted: 02/23/2023] [Indexed: 03/02/2023] Open
Abstract
Glabridin is a polyphenolic compound with reported anti-inflammatory and anti-oxidative effects. In the previous study, we synthesized glabridin derivatives-HSG4112, (S)-HSG4112, and HGR4113-based on the structure-activity relationship study of glabridin to improve its biological efficacy and chemical stability. In the present study, we investigated the anti-inflammatory effects of the glabridin derivatives in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages. We found that the synthetic glabridin derivatives significantly and dose-dependently suppressed the production of nitric oxide (NO) and prostaglandin E2 (PGE2), and decreased the level of inducible nitric oxygen synthase (iNOS) and cyclooxygenase-2 (COX-2) and the expression of pro-inflammatory cytokines interleukin-1β (IL-1β), IL-6, and tumor necrosis factor alpha (TNF-α). The synthetic glabridin derivatives inhibited the nuclear translocation of the NF-κB by inhibiting phosphorylation of the inhibitor of κB alpha (IκB-α), and distinctively inhibited the phosphorylation of ERK, JNK, and p38 MAPKs. In addition, the compounds increased the expression of antioxidant protein heme oxygenase (HO-1) by inducing nuclear translocation of nuclear factor erythroid 2-related factor 2 (Nrf2) through ERK and p38 MAPKs. Taken together, these results indicate that the synthetic glabridin derivatives exert strong anti-inflammatory effects in LPS-stimulated macrophages through MAPKs and NF-κB pathways, and support their development as potential therapeutics against inflammatory diseases.
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Affiliation(s)
- Jaejin Shin
- Glaceum Inc., Suwon 16675, Republic of Korea
| | | | | | - Hyeong Min Lee
- Glaceum Inc., Suwon 16675, Republic of Korea
- Department of Applied Chemistry, Institute of Natural Science, Global Center for Pharmaceutical Ingredient Materials, Kyung Hee University, Yongin 17104, Republic of Korea
| | | | - Kwan-Woo Kim
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA, Eumseong 27709, Republic of Korea
| | - Wonmin Ko
- Department of Marine Bio-Food Sciences, Chonnam National University, Yeosu 59626, Republic of Korea
| | - Hyuncheol Oh
- College of Pharmacy, Wonkwang University, Iksan 54538, Republic of Korea
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Hassanein EHM, Althagafy HS, Atwa AM, Kozman MR, Kotb El-Sayed MI, Soubh AA. Taurine attenuated methotrexate-induced intestinal injury by regulating NF-κB/iNOS and Keap1/Nrf2/HO-1 signals. Life Sci 2022; 311:121180. [PMID: 36370869 DOI: 10.1016/j.lfs.2022.121180] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/28/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022]
Abstract
Methotrexate (MTX) is a well-known and widely used cytotoxic chemotherapeutic agent. However, intestinal mucosa damage is a serious adverse effect of MTX. Taurine (TUR) is a sulfur-containing free β-amino acid with antioxidant and therapeutic value against several diseases. The current study aimed to determine the protective effect of TUR against MTX-induced intestinal injury. Rats were allocated into four groups. The first group received vehicles only. The second group received TUR at a dose of 250 mg/kg i.p. For induction of intestinal injury, the rats in the third group were given MTX once at a dose of 20 mg/kg, i.p. The fourth group received TUR 7 days before and 7 days after MTX, as previously described. TUR significantly attenuated the cytokine release by suppressing NF-κB and iNOS expressions. Moreover, cotreatment with TUR attenuated the increased MDA level while it enhanced the antioxidant GSH and SOD levels mediated by effective downregulation of Keap1 expression, while the expression of Nrf2, HO-1, and cytoglobin were up-regulated. Additionally, TUR mitigated the apoptosis and proliferation indices by decreasing the elevated levels of intestinal PCNA and caspase-3. Finally, TUR potently increased the cytotoxic activity of MTX toward Caco-2, MCF-7, and A549 cancer cells. In conclusion, TUR was a promising agent for relieving MTX-mediated intestinal injury via various antioxidant, anti-inflammatory, and antiapoptotic mechanisms.
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Affiliation(s)
- Emad H M Hassanein
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt.
| | - Hanan S Althagafy
- Department of Biochemistry, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Ahmed M Atwa
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Egyptian Russian University, Cairo, Egypt
| | - Magy R Kozman
- Department of Clinical Pharmacology, Faculty of Pharmacy, Misr University for Science and Technology, Cairo, Egypt
| | - Mohamed I Kotb El-Sayed
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy, Helwan University, Ain Helwan, Helwan, Cairo, Egypt
| | - Ayman A Soubh
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Ahram Canadian University, Giza 12566, Egypt
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Silva RCMC, Vasconcelos LR, Travassos LH. The different facets of heme-oxygenase 1 in innate and adaptive immunity. Cell Biochem Biophys 2022; 80:609-631. [PMID: 36018440 DOI: 10.1007/s12013-022-01087-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 07/20/2022] [Indexed: 11/26/2022]
Abstract
Heme oxygenase (HO) enzymes are responsible for the main oxidative step in heme degradation, generating equimolar amounts of free iron, biliverdin and carbon monoxide. HO-1 is induced as a crucial stress response protein, playing protective roles in physiologic and pathological conditions, due to its antioxidant, anti-apoptotic and anti-inflammatory effects. The mechanisms behind HO-1-mediated protection are being explored by different studies, affecting cell fate through multiple ways, such as reduction in intracellular levels of heme and ROS, transcriptional regulation, and through its byproducts generation. In this review we focus on the interplay between HO-1 and immune-related signaling pathways, which culminate in the activation of transcription factors important in immune responses and inflammation. We also discuss the dual interaction of HO-1 and inflammatory mediators that govern resolution and tissue damage. We highlight the dichotomy of HO-1 in innate and adaptive immune cells development and activation in different disease contexts. Finally, we address different known anti-inflammatory pharmaceuticals that are now being described to modulate HO-1, and the possible contribution of HO-1 in their anti-inflammatory effects.
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Affiliation(s)
- Rafael Cardoso Maciel Costa Silva
- Laboratory of Immunoreceptors and Signaling, Instituto de Biofísica Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Luiz Ricardo Vasconcelos
- Cellular Signaling and Cytoskeletal Function Laboratory, The Francis Crick Institute, London, UK
| | - Leonardo Holanda Travassos
- Laboratory of Immunoreceptors and Signaling, Instituto de Biofísica Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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8
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Cardamonin attenuates phorbol 12-myristate 13-acetate-induced pulmonary inflammation in alveolar macrophages. Food Chem Toxicol 2021; 159:112761. [PMID: 34890758 DOI: 10.1016/j.fct.2021.112761] [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: 09/27/2021] [Revised: 12/02/2021] [Accepted: 12/05/2021] [Indexed: 01/24/2023]
Abstract
Pulmonary inflammation involves complex immune responses in which alveolar macrophages release pro-inflammatory proteins and cytokines. Cardamonin is a spice component that exerts anti-inflammatory and anti-oxidative properties against pulmonary inflammation. Herein, the aim of this research is to investigate the effects of cardamonin on pulmonary inflammation and its mechanism. Pulmonary inflammation in mice was induced by intratracheal administration of PMA. PMA-stimulated acute fibrosis, pulmonary edema, and inflammatory responses were ameliorated by oral administration of cardamonin in vivo. In MH-S alveolar macrophages, PMA-induced pro-inflammatory responses, including iNOS, COX-2, MMP-9 and cytokines expressions were reduced by cardamonin. The anti-oxidative Nrf2/HO-1 axis was also provoked by cardamonin in MH-S alveolar macrophages. In addition, MMP-9 expression induced by PMA is also decreased by the down-stream metabolites of HO-1, indicating that HO-1 expression partially contributes to the anti-inflammatory effect exerted by cardamonin. In this study, cardamonin demonstrates anti-inflammatory and anti-oxidative effects on PMA-induced pulmonary inflammation and activating Nrf2/HO-1 axis in alveolar macrophages. Cardamonin also ameliorates pulmonary inflammation, rapid fibrosis in vivo, suggesting powerful health benefits.
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9
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Shoemaker R, Kim J. Urobiome: An outlook on the metagenome of urological diseases. Investig Clin Urol 2021; 62:611-622. [PMID: 34729961 PMCID: PMC8566783 DOI: 10.4111/icu.20210312] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/09/2021] [Accepted: 09/30/2021] [Indexed: 12/12/2022] Open
Abstract
The urinary tract likely plays a role in the development of various urinary diseases due to the recently recognized notion that urine is not sterile. In this mini review, we summarize the current literature regarding the urinary microbiome and mycobiome and its relationship to various urinary diseases. It has been recently discovered that the healthy urinary tract contains a host of microorganisms, creating a urinary microbiome. The relative abundance and type of bacteria varies, but generally, deviations in the standard microbiome are observed in individuals with urologic diseases, such as bladder cancer, benign prostatic hyperplasia, urgency urinary incontinence, overactive bladder syndrome, interstitial cystitis, bladder pain syndrome, and urinary tract infections. However, whether this change is causative, or correlative has yet to be determined. In summary, the urinary tract hosts a complex microbiome. Changes in this microbiome may be indicative of urologic diseases and can be tracked to predict, prevent, and treat them in individuals. However, current analytical and sampling collection methods may present limitations to the development in the understanding of the urinary microbiome and its relationship with various urinary diseases. Further research on the differences between healthy and diseased microbiomes, the long-term effects of antibiotic treatments on the urobiome, and the effect of the urinary mycobiome on general health will be important in developing a comprehensive understanding of the urinary microbiome and its relationship to the human body.
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Affiliation(s)
- Rachel Shoemaker
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Jayoung Kim
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Medicine, University of California, Los Angeles, CA, USA.,Department of Urology, Gachon University College of Medicine, Incheon, Korea.
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10
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Chen Z, Zhang H, Zhou J, Stone C, Ding Y, Zhang Y, Ren C, Yin X, Meng R. CORM-2 inhibits intracerebral hemorrhage-mediated inflammation. Neurol Res 2021; 43:846-853. [PMID: 34107862 DOI: 10.1080/01616412.2021.1939484] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Background and purpose: Low-dose of carbon monoxide delivered by CO-releasing molecule-2 (CORM-2) had been confirmed having anti-inflammatory efficacy in some inflammatory diseases. Herein, we assessed the usefulness of CORM-2 in correcting intracerebral hemorrhage (ICH)-mediated inflammation.Methods: Healthy male Sprague Dawley (SD) rats randomly entered into four groups: sham-ICH, ICH, ICH+CORM-2, and ICH+ inactive carbon monoxide releasing molecule 2 (iCORM-2). ICH was induced by 50 μl of autologous arterial blood injected in situ in the rat brain. Neuro-functions of the ICH rats were evaluated with Garcia 18 scores at the 6th, 24th , 48th hou, and the fifthh day post-ICH. And brain tissues surrounding the hematoma area were collected from all ICH rats and assayed with Western blot and immunofluoresence analysis.Results: Neuro-dysfunctions in ICH rats were very severe than those in ICH +CORM-2 rats. Compared to sham group, the levels of HO-1, IKKβ, NF-κB, and TNF-α in ICH group began to elevate at the 6th hour, and reached to peak at the 48th hour post-ICH, all p < 0.05. While in ICH +CORM-2 group, the expressions of IKKβ, NF-κB, and TNF-α were very weaker than that in ICH group at every time points mentioned above; however, this phenomenon was not reproduced in ICH + iCORM-2 group. HO-1 in ICH+CORM-2 group highlighted in perihematomal area with many activated microglia (Iba-1-positive cells) and co-expressed with TNF-α, all of which were diminished at the fifth day post-ICH.Conclusion: CORM-2 may attenuate ICH-mediated inflammation by inhibiting microglial activation, which may involve the IKK/NF-κB pathway.AbbreviationsICH: intracerebral hemorrhage; CO: carbon monoxide; CORM-2: carbon monoxide releasing molecule-2; iCORM-2: inactive carbon monoxide releasing molecule-2; HO-1: heme oxygenase 1; IKKβ: inhibitor of IκB kinases β; NF-κB: nuclear factor-κB; TNF-α: tumor necrosis factor-α; Iba-1: ionized calcium binding adaptor molecule-1; IκB: inhibitor of NF-κB; iNOS: inducible nitric oxide synthase; Keap1: Kelch-like ECH-associated protein 1; Nrf2: NF-E2-related factor 2; DMSO: dimethylsulfoxide.
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Affiliation(s)
- Zhiying Chen
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Advanced Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.,Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.,Department of Neurology, Affiliated Hospital of Jiujiang University, Jiujiang, China
| | - Huiyan Zhang
- Department of Neurology, Affiliated Hospital of Jiujiang University, Jiujiang, China.,Department of Neurology, Jingdezhen First People's Hospital, Jingdezhen, China
| | - Jun Zhou
- Department of Neurology, Affiliated Hospital of Jiujiang University, Jiujiang, China.,Department of Neurology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Christopher Stone
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Yuchuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA
| | - Yunzhou Zhang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Advanced Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
| | - Changhong Ren
- Advanced Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
| | - Xiaoping Yin
- Department of Neurology, Affiliated Hospital of Jiujiang University, Jiujiang, China
| | - Ran Meng
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Advanced Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.,Department of China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China
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11
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Htway SM, Suzuki T, Kyaw S, Nohara K, Win-Shwe TT. Effects of maternal exposure to arsenic on social behavior and related gene expression in F2 male mice. Environ Health Prev Med 2021; 26:34. [PMID: 33706700 PMCID: PMC7953802 DOI: 10.1186/s12199-021-00956-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 03/01/2021] [Indexed: 11/18/2022] Open
Abstract
Background Arsenic is a developmental neurotoxicant. It means that its neurotoxic effect could occur in offspring by maternal arsenic exposure. Our previous study showed that developmental arsenic exposure impaired social behavior and serotonergic system in C3H adult male mice. These effects might affect the next generation with no direct exposure to arsenic. This study aimed to detect the social behavior and related gene expression changes in F2 male mice born to gestationally arsenite-exposed F1 mice. Methods Pregnant C3H/HeN mice (F0) were given free access to tap water (control mice) or tap water containing 85 ppm sodium arsenite from days 8 to 18 of gestation. Arsenite was not given to F1 or F2 mice. The F2 mice were generated by mating among control F1 males and females, and arsenite-F1 males and females at the age of 10 weeks. At 41 weeks and 74 weeks of age respectively, F2 males were used for the assessment of social behavior by a three-chamber social behavior apparatus. Histological features of the prefrontal cortex were studied by ordinary light microscope. Social behavior-related gene expressions were determined in the prefrontal cortex by real time RT-PCR method. Results The arsenite-F2 male mice showed significantly poor sociability and social novelty preference in both 41-week-old group and 74-week-old group. There was no significant histological difference between the control mice and the arsenite-F2 mice. Regarding gene expression, serotonin receptor 5B (5-HT 5B) mRNA expression was significantly decreased (p < 0.05) in the arsenite-F2 male mice compared to the control F2 male mice in both groups. Brain-derived neurotrophic factor (BDNF) and dopamine receptor D1a (Drd1a) gene expressions were significantly decreased (p < 0.05) only in the arsenite-F2 male mice of the 74-week-old group. Heme oxygenase-1 (HO-1) gene expression was significantly increased (p < 0.001) in the arsenite-F2 male mice of both groups, but plasma 8-hydroxy-2′-deoxyguanosine (8-OHdG) and cyclooxygenase-2 (COX-2) gene expression were not significantly different. Interleukin-1β (IL-1β) mRNA expression was significantly increased only in 41-week-old arsenite-F2 mice. Conclusions These findings suggest that maternal arsenic exposure affects social behavior in F2 male mice via serotonergic system in the prefrontal cortex. In this study, COX-2 were not increased although oxidative stress marker (HO-1) was increased significantly in arsnite-F2 male mice.
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Affiliation(s)
- Soe-Minn Htway
- Department of Physiology, University of Medicine, Magway, Magway, Myanmar
| | - Takehiro Suzuki
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, 305-8506, Japan
| | - Sanda Kyaw
- Department of Physiology, University of Medicine, Magway, Magway, Myanmar
| | - Keiko Nohara
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, 305-8506, Japan
| | - Tin-Tin Win-Shwe
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, 305-8506, Japan.
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12
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Lu C, Gao R, Zhang Y, Jiang N, Chen Y, Sun J, Wang Q, Fan B, Liu X, Wang F. S-equol, a metabolite of dietary soy isoflavones, alleviates lipopolysaccharide-induced depressive-like behavior in mice by inhibiting neuroinflammation and enhancing synaptic plasticity. Food Funct 2021; 12:5770-5778. [PMID: 34038497 DOI: 10.1039/d1fo00547b] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Systemic injection with lipopolysaccharide can lead to depressive-like behavior in experimental animals by inducing neuroinflammation and is considered to be a classic model of depression. S-equol is a major metabolite of dietary soy isoflavones with antioxidant and anti-inflammatory effects, and it has many beneficial effects on human health, including alleviation of menopausal symptoms, osteoporosis, cancer, obesity, chronic kidney disease, and cognitive dysfunction. A recent study reported that S-equol inhibited lipopolysaccharide-stimulated neuroinflammation in astrocytes. However, there is no research on the antidepressant-like effects of S-equol. Therefore, the present study was conducted to evaluate the antidepressant-like effects of S-equol in a lipopolysaccharide-induced depression model in mice and explore its underlying mechanisms. Our results demonstrated that treatment with S-equol (10, 20 and 40 mg kg-1) for 19 days markedly reversed the behavior of acute LPS (1.0 mg kg-1) treated mice in sucrose preference, tail suspension and forced swimming tests, exerting antidepressant-like effects. In addition, S-equol administration significantly decreased the levels of pro-inflammatory cytokines (tumor necrosis factor, interleukin-6, interleukin-10, interleukin-1β), increased the levels of 5-hydroxytryptamine and norepinephrine, and normalized the release of tryptophan and kynurenine in the hippocampi of lipopolysaccharide-treated mice. Moreover, treatment with S-equol significantly up-regulated the expression of synaptic plasticity-related proteins (phospho synapsin, synapsin, postsynaptic density-95) and down-regulated the toll-like receptor 4/nuclear factor kappa B signaling pathway in the hippocampi of lipopolysaccharide-treated mice. These findings demonstrated that S-equol significantly alleviated the depressive-like behavior induced by acute systemic injection of LPS, and its antidepressant action was related to mediation of neuroinflammation via the TLR4/NF-κB signaling pathway, normalization of the monoamine neurotransmitter levels, reversal of tryptophan metabolism dysfunction, and enhancement of synaptic plasticity. The current study provides insight into the potential of S-equol in the prevention of depression.
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Affiliation(s)
- Cong Lu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China.
| | - Rongjing Gao
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China. and College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yingyu Zhang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China.
| | - Ning Jiang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing 100193, China.
| | - Ying Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences (CACM), Beijing 100700, China
| | - Jing Sun
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China.
| | - Qiong Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China.
| | - Bei Fan
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China.
| | - Xinmin Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing 100193, China.
| | - Fengzhong Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China. and College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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13
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Kurita N, Yamashiro K, Kuroki T, Tanaka R, Urabe T, Ueno Y, Miyamoto N, Takanashi M, Shimura H, Inaba T, Yamashiro Y, Nomoto K, Matsumoto S, Takahashi T, Tsuji H, Asahara T, Hattori N. Metabolic endotoxemia promotes neuroinflammation after focal cerebral ischemia. J Cereb Blood Flow Metab 2020; 40:2505-2520. [PMID: 31910709 PMCID: PMC7820690 DOI: 10.1177/0271678x19899577] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Lipopolysaccharide (LPS) is a major component of the outer membrane of Gram-negative bacteria and a potent inflammatory stimulus for the innate immune response via toll-like receptor (TLR) 4 activation. Type 2 diabetes is associated with changes in gut microbiota and impaired intestinal barrier functions, leading to translocation of microbiota-derived LPS into the circulatory system, a condition referred to as metabolic endotoxemia. We investigated the effects of metabolic endotoxemia after experimental stroke with transient middle cerebral artery occlusion (MCAO) in a murine model of type 2 diabetes (db/db) and phenotypically normal littermates (db/+). Compared to db/+ mice, db/db mice exhibited an altered gut microbial composition, increased intestinal permeability, and higher plasma LPS levels. In addition, db/db mice presented increased infarct volumes and higher expression levels of LPS, TLR4, and inflammatory cytokines in the ischemic brain, as well as more severe neurological impairments and reduced survival rates after MCAO. Oral administration of a non-absorbable antibiotic modulated the gut microbiota and improved metabolic endotoxemia and stroke outcomes in db/db mice; these effects were associated with reduction of LPS levels and neuroinflammation in the ischemic brain. These data suggest that targeting metabolic endotoxemia may be a novel potential therapeutic strategy to improve stroke outcomes.
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Affiliation(s)
- Naohide Kurita
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kazuo Yamashiro
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Takuma Kuroki
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Ryota Tanaka
- Division of Neurology, Department of Internal Medicine, Jichi Medical University, Tochigi Japan
| | - Takao Urabe
- Department of Neurology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Yuji Ueno
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Nobukazu Miyamoto
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Masashi Takanashi
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Hideki Shimura
- Department of Neurology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Toshiki Inaba
- Department of Neurology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Yuichiro Yamashiro
- Probiotics Research Laboratory, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Koji Nomoto
- Probiotics Research Laboratory, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Molecular Microbiology, Tokyo University of Agriculture, Tokyo, Japan
| | - Satoshi Matsumoto
- Probiotics Research Laboratory, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Yakult Central Institute, Tokyo, Japan
| | - Takuya Takahashi
- Probiotics Research Laboratory, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Yakult Honsha European Research Center for Microbiology ESV, Gent, Belgium
| | - Hirokazu Tsuji
- Probiotics Research Laboratory, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Yakult Central Institute, Tokyo, Japan
| | - Takashi Asahara
- Probiotics Research Laboratory, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Yakult Central Institute, Tokyo, Japan
| | - Nobutaka Hattori
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
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14
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Jain S, Samal AG, Das B, Pradhan B, Sahu N, Mohapatra D, Behera PK, Satpathi PS, Mohanty AK, Satpathi S, Senapati S. Escherichia coli, a common constituent of benign prostate hyperplasia-associated microbiota induces inflammation and DNA damage in prostate epithelial cells. Prostate 2020; 80:1341-1352. [PMID: 32835423 DOI: 10.1002/pros.24063] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 07/25/2020] [Accepted: 08/10/2020] [Indexed: 12/26/2022]
Abstract
BACKGROUND The role of microbiota in the pathophysiology of benign prostate hyperplasia (BPH), especially in creating an inflammatory milieu may not be avoided. The major objectives of this study were to investigate the microbial composition of BPH tissues, its association with inflammation and check the effect of clinically isolated bacteria on prostate epithelial cells. METHODS The study includes 36 patients with a pathological diagnosis of BPH. Following strict aseptic measures, tissues were collected after transurethral resection of prostate, multiple pieces of the resected tissues were subjected to histopathological analysis, bacterial culture and genomic DNA extraction. Microbial composition was analyzed by culture and/or next-generation sequencing methods. Annotation of operational taxonomy unit has been done with an in-house algorithm. The extent of inflammation was scored through histological evaluation of tissue sections. The effect of clinical isolates on nuclear factor-κB (NF-κB) activity and induction of DNA-damage in the prostate epithelial cells were evaluated. RESULTS Histopathological analysis of the BPH tissues showed the presence of inflammation in almost all the tissues with a varied level at different regions of the same tissue section and the level of overall inflammation was different from patients to patients. Microbial culture of tissue samples showed the presence of live bacteria in 55.5% (20 out of 36) of the patient tissues. Majority of the isolates were coagulase-positive Staphylococcus, E. coli and Micrococcus spp. Further, V3 16S rRNA sequencing of the DNA isolated from BPH tissues showed the presence of multiple bacteria and the most common phylum in the BPH tissues were found to be Proteobacteria, Actinobacteria, Firmicutes, and Bacteroidetes. The E. coli, isolated from one of the tissue was able to activate NF-κB and induce DNA damage in prostate epithelial cells. Phospho-histone γH2A.X staining confirmed the presence of cells with damaged DNA lesion in BPH tissues and also correlated with the severity of inflammation. CONCLUSION Our study has shown that the BPH tissues do have a divergent microbial composition including the commonly found E. coli (phylum Proteobacteria), and these bacteria might contribute to the BPH-associated inflammation and/or tissue damage. The BPH-associated E. coli induced NF-κB signaling and DNA damage in prostate epithelial cells in vitro.
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Affiliation(s)
- Sumeet Jain
- Division of Cancer Biology, Tumor Microenvironment and Animal Models Lab, Institute of Life Sciences, Bhubaneswar, Odisha, India
- Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Ajit Gopal Samal
- Department of Surgery, Hitech Medical College, Rourkela, Odisha, India
| | - Biswajit Das
- Division of Cancer Biology, Tumor Microenvironment and Animal Models Lab, Institute of Life Sciences, Bhubaneswar, Odisha, India
- Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Biswaranjan Pradhan
- School of Basic Sciences, S. K. Dash Center of Excellence of Biosciences and Engineering & Technology (SKBET), Indian Institute of Technology, Bhubaneswar, Odisha, India
| | - Nilanjan Sahu
- School of Biological Sciences, National Institute of Science Education and Research, Bhubaneswar, Odisha, India
| | - Debasish Mohapatra
- Division of Cancer Biology, Tumor Microenvironment and Animal Models Lab, Institute of Life Sciences, Bhubaneswar, Odisha, India
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | | | | | - Akshaya K Mohanty
- Infectious Disease Biology Unit, Institute of Life Sciences, Bhubaneswar, Odisha, India
| | - Sanghamitra Satpathi
- Department of Pathology, Ispat General Hospital, Rourkela, Odisha, India
- Department of Pathology, Hitech Medical College and Hospital, Rourkela, Odisha, India
| | - Shantibhusan Senapati
- Division of Cancer Biology, Tumor Microenvironment and Animal Models Lab, Institute of Life Sciences, Bhubaneswar, Odisha, India
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15
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Eser Ocak P, Ocak U, Sherchan P, Gamdzyk M, Tang J, Zhang JH. Overexpression of Mfsd2a attenuates blood brain barrier dysfunction via Cav-1/Keap-1/Nrf-2/HO-1 pathway in a rat model of surgical brain injury. Exp Neurol 2020; 326:113203. [PMID: 31954682 PMCID: PMC7038791 DOI: 10.1016/j.expneurol.2020.113203] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Disruption of the blood brain barrier (BBB) and subsequent cerebral edema formation is one of the major adverse effects of brain surgery, leading to postoperative neurological dysfunction. Recently, Mfsd2a has been shown to have a crucial role for the maintenance of BBB functions. In this study, we aimed to evaluate the role of Mfsd2a on BBB disruption following surgical brain injury (SBI) in rats. MATERIALS AND METHODS Rats were subjected to SBI by partial resection of the right frontal lobe. To evaluate the effect of Mfsd2a on BBB permeability and neurobehavior outcome following SBI, Mfsd2a was either overexpressed or downregulated in the brain by administering Mfsd2a CRISPR activation or knockout plasmids, respectively. The potential mechanism of Mfsd2a-mediated BBB protection through the cav-1/Nrf-2/HO-1 signaling pathway was evaluated. RESULTS Mfsd2a levels were significantly decreased while cav-1, Nrf-2 and HO-1 levels were increased in the right frontal perisurgical area following SBI. When overexpressed, Mfsd2a attenuated brain edema and abolished neurologic impairment caused by SBI while downregulation of Mfsd2a expression further deteriorated BBB functions and worsened neurologic performance following SBI. The beneficial effect of Mfsd2a overexpression on BBB functions was associated with diminished expression of cav-1, increased Keap-1/Nrf-2 dissociation and further augmented levels of Nrf-2 and HO-1 in the right frontal perisurgical area, leading to enhanced levels of tight junction proteins following SBI. The BBB protective effect of Mfsd2a was blocked by selective inhibitors of Nrf-2 and HO-1. CONCLUSIONS Mfsd2a attenuates BBB disruption through cav-1/Nrf-2/HO-1 signaling pathway in rats subjected to experimental SBI.
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Affiliation(s)
- Pinar Eser Ocak
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Neurosurgery, Uludag University School of Medicine, Bursa 16120, Turkey
| | - Umut Ocak
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Emergency Medicine, Bursa Yuksek Ihtisas Training and Research Hospital, University of Health Sciences, Bursa 16310, Turkey; Department of Emergency Medicine, Bursa City Hospital, Bursa 16110, Turkey
| | - Prativa Sherchan
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Marcin Gamdzyk
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Anesthesiology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Neurology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA.
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16
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Wang QH, Li W, Jiang YX, Lu XH, Wang GG. The extract from Agkistrodon halys venom protects against lipopolysaccharide (LPS)-induced myocardial injury. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:176. [PMID: 31315617 PMCID: PMC6637617 DOI: 10.1186/s12906-019-2595-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 07/09/2019] [Indexed: 01/20/2023]
Abstract
BACKGROUND Snake venoms contain various bioactive constituents which possess potential therapeutic effects. The aim of this work was to investigate the effect of the extract from Agkistrodon halys venom on lipopolysaccharide (LPS)-induced myocardial injury. METHODS Thirty male Sprague-Dawley rats were randomly assigned to three groups (10 rats per group): control group, LPS group and LPS + extract group. Rats in control and the LPS groups were intravenously injected with sterile saline solution, and rats in the LPS + extract group with the extract. After 2 h, rats of the control group were intraperitoneally injected sterile saline solution, and rats in the LPS and the LPS + extract groups were treated with LPS (20 mg per kg body weight). Levels of creatine kinase (CK) and lactate dehydrogenase (LDH) in serum were determined. Anti-inflammation of the extract was analyzed via determination of TNF-α and IL-6 in serum, and expression of TNF-α, IL-6, COX-2 and p-ERK protein in hearts. Heme oxygenase-1 (HO-1) and p-NF-κB protein expression in hearts, superoxide dismutase (SOD) activity and malondialdehyde (MDA) level in serum were used to evaluate the anti-oxidative properties of the extract. RESULTS Extract pretreatment significantly decreased the level of serum CK and LDH, reduced the generation of inflammatory cytokines such as TNF-α and IL-6, and also reduced serum level of MDA in the LPS + extract group compared with the LPS group. In addition, the extract increased SOD activity in serum, HO-1 protein expression in hearts, and decreased TNF-α, IL-6, COX-2, p-NF-κB and p-ERK1/2 protein expression. CONCLUSION Our results suggested that beneficial effect of this extract might be associated with an improved anti-oxidation and anti-inflammatory effect via downregulation of NF-κB/COX-2 signaling by activating HO-1/CO in hearts.
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Affiliation(s)
- Quan-Hai Wang
- Department of Histology and Embryology, Wannan Medical College, Wuhu, 241002, People's Republic of China
| | - Wei Li
- Department of Pathophysiology, Wannan Medical College, 22 West Wenchang Road, Yijiang District, Wuhu, 241002, China
| | - Yu-Xin Jiang
- Department of Physiology, Wannan Medical College, Wuhu, 241002, People's Republic of China
| | - Xiao-Hua Lu
- Department of Pathophysiology, Wannan Medical College, 22 West Wenchang Road, Yijiang District, Wuhu, 241002, China
| | - Guo-Guang Wang
- Department of Pathophysiology, Wannan Medical College, 22 West Wenchang Road, Yijiang District, Wuhu, 241002, China.
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17
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He MC, Shi Z, Sha NN, Chen N, Peng SY, Liao DF, Wong MS, Dong XL, Wang YJ, Yuan TF, Zhang Y. Paricalcitol alleviates lipopolysaccharide-induced depressive-like behavior by suppressing hypothalamic microglia activation and neuroinflammation. Biochem Pharmacol 2019; 163:1-8. [DOI: 10.1016/j.bcp.2019.01.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 01/25/2019] [Indexed: 12/11/2022]
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18
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Destefanis F, Fiorito V, Altruda F, Tolosano E. Investigating the Connection Between Endogenous Heme Accumulation and COX2 Activity in Cancer Cells. Front Oncol 2019; 9:162. [PMID: 30941311 PMCID: PMC6433962 DOI: 10.3389/fonc.2019.00162] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 02/25/2019] [Indexed: 12/18/2022] Open
Abstract
Heme, an iron-containing porphyrin, is fundamental for a variety of functions in cell homeostasis. Nevertheless, recent data indicate that dysregulation of heme metabolism might promote tumorigenesis. The intracellular heme pool is finely regulated through the control of heme synthesis, degradation, incorporation into hemoproteins and trafficking across membranes. All these processes might be potentially targeted to alter endogenous heme content in order to counteract cancer growth. Nevertheless, these putative therapeutic interventions have to take into account the possibility of undesired side effects, such as the over-activation of heme-dependent enzymes involved in cancer. Among them, cyclooxygenase-2 is a prostaglandin-producing hemoprotein, induced during inflammation and in different types of tumor, particularly in colorectal cancer. The aim of this study was to evaluate whether modulation of endogenous heme may affect cyclooxygenase-2 expression and activity, taking advantage of two different approaches able to alter heme levels: the silencing of the heme exporter Feline Leukemia Virus subgroup C receptor 1 and the induction of heme synthesis by 5-aminolevulinic acid administration. Our data demonstrate that the down-regulation of the heme exporter in colorectal cancer cells does not affect cyclooxygenase-2 expression and activity. Conversely, 5-aminolevulinic acid administration results in decreased cyclooxygenase-2 expression. However, the overall cyclooxygenase-2 enzymatic activity is maintained. The present work sheds light on the complex modulation of cyclooxygenase-2 by endogenous heme and support the idea that targeting heme metabolism could be a valuable therapeutic option against cancer.
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Affiliation(s)
- Francesca Destefanis
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Veronica Fiorito
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
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19
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Jiang L, Jiang Q, Yang S, Huang S, Han X, Duan J, Pan S, Zhao M, Guo S. GYY4137 attenuates LPS-induced acute lung injury via heme oxygenase-1 modulation. Pulm Pharmacol Ther 2018; 54:77-86. [PMID: 30605726 DOI: 10.1016/j.pupt.2018.12.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 12/16/2018] [Accepted: 12/30/2018] [Indexed: 12/16/2022]
Abstract
GYY4137, a slow-releasing hydrogen sulfide (H2S) donor, has been reported to exert anti-inflammatory activity and protect against sepsis. Heme oxygenase-1 (HO-1) is an important anti-inflammatory heat shock protein and plays a similar effect on sepsis. This study investigated the role of GYY4137 in acute lung injury (ALI) via HO-1 regulation. Lung injury was assessed in mice challenged with intratracheal lipopolysaccharide (LPS) and the mechanism of anti-inflammatory effects of GYY4137 was investigated in mice and RAW264.7 cells. GYY4137 reduced the LPS-mediated pulmonary injury and neutrophil infiltration, and inhibited the LPS-induced production of proinflammatory cytokines, inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression. Moreover, GYY4137 suppressed the LPS-evoked NF-κB activation in RAW264.7 cells. GYY4137, not time-expired GYY4137 significantly induced HO-1 expression compared with the LPS group. The beneficial effects of GYY4137 above were reversed by the HO-1 inhibitor tin protoporphyrin (SnPP). These results suggest an anti-inflammatory effect and a therapeutic role of GYY4137 in LPS-induced ALI via HO-1 regulation.
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Affiliation(s)
- Lei Jiang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qing Jiang
- School of Statistics, Beijing Normal University, Beijing, China
| | - Songlin Yang
- Department of ICU, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Shicong Huang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaoli Han
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jun Duan
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shangha Pan
- The Key Hepatosplenic Surgery Laboratory, Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Mingyan Zhao
- Department of ICU, The First Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Shuliang Guo
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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20
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Mahbouli S, Talvas J, der Vartanian A, Ortega S, Rougé S, Vasson MP, Rossary A. Activation of antioxidant defences of human mammary epithelial cells under leptin depend on neoplastic state. BMC Cancer 2018; 18:1264. [PMID: 30563501 PMCID: PMC6299648 DOI: 10.1186/s12885-018-5141-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 11/27/2018] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Obesity is associated with oxidative stress, a major factor in carcinogenesis, and with high leptin concentration. The aim of this study was to determine the effects of leptin on the antioxidant response in three human mammary epithelial cells each presenting a different neoplastic status: healthy human mammary epithelial cells (HMEC), oestrogen-receptor positive MCF-7 cells and triple-negative MDA-MB-231 cells. METHODS This in vitro kinetic study characterized the cell antioxidant response after 1, 6 and 24 h in the presence of leptin (10 or 100 ng/ml).The antioxidant response was defined in terms of cell glutathione content, gene expression and catalytic activity of antioxidant enzymes (i.e. glutathione peroxidase 1 (Gpx1), glutathione reductase (GR), glutathione S transferase (GST), heme-oxygenase 1 (HO-1) and cyclooxygenase-2 (COX-2)). Oxidative stress occurrence was assessed by lipid hydro peroxide (HPLIP) and isoprostane concentrations in culture media at 24 h. RESULTS At both concentrations used, leptin induced ROS production in all cell models, contributing to various antioxidant responses linked to neoplastic cell status. HMEC developed a highly inducible antioxidant response based on antioxidant enzyme activation and an increase in cell GSH content at 10 ng/ml of leptin. However, at 100 ng/ml of leptin, activation of antioxidant response was lower. Conversely, in tumour cells, MCF-7 and MDA-MB-231, leptin did not induce an efficient antioxidant response, at either concentration, resulting in an increase of lipid peroxidation products. CONCLUSIONS Leptin can modulate the oxidative status of mammary epithelial cells differently according to their neoplastic state. These novel results shed light on oxidative status changes in mammary cells in the presence of leptin.
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Affiliation(s)
- Sinda Mahbouli
- Université Clermont Auvergne, INRA, UMR 1019, Unité de Nutrition Humaine, CRNH-Auvergne, F-63000, Clermont-Ferrand, France
| | - Jérémie Talvas
- Université Clermont Auvergne, INRA, UMR 1019, Unité de Nutrition Humaine, CRNH-Auvergne, F-63000, Clermont-Ferrand, France
| | - Audrey der Vartanian
- Université Clermont Auvergne, INRA, UMR 1019, Unité de Nutrition Humaine, CRNH-Auvergne, F-63000, Clermont-Ferrand, France
| | - Sophie Ortega
- Université Clermont Auvergne, INRA, UMR 1019, Unité de Nutrition Humaine, CRNH-Auvergne, F-63000, Clermont-Ferrand, France
| | - Stéphanie Rougé
- Université Clermont Auvergne, INRA, UMR 1019, Unité de Nutrition Humaine, CRNH-Auvergne, F-63000, Clermont-Ferrand, France
| | - Marie-Paule Vasson
- Université Clermont Auvergne, INRA, UMR 1019, Unité de Nutrition Humaine, CRNH-Auvergne, F-63000, Clermont-Ferrand, France.,CHU Clermont-Ferrand, Centre Jean Perrin, Unité de Nutrition, CLARA, F-63000, Clermont-Ferrand, France
| | - Adrien Rossary
- Université Clermont Auvergne, INRA, UMR 1019, Unité de Nutrition Humaine, CRNH-Auvergne, F-63000, Clermont-Ferrand, France.
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21
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Resolving neuroinflammation, the therapeutic potential of the anti-malaria drug family of artemisinin. Pharmacol Res 2018; 136:172-180. [DOI: 10.1016/j.phrs.2018.09.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/01/2018] [Accepted: 09/04/2018] [Indexed: 12/15/2022]
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22
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Ameeramja J, Kanagaraj VV, Perumal E. Protocatechuic acid methyl ester modulates fluoride induced pulmonary toxicity in rats. Food Chem Toxicol 2018; 118:235-244. [DOI: 10.1016/j.fct.2018.05.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 04/18/2018] [Accepted: 05/10/2018] [Indexed: 01/06/2023]
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23
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Chaves C, Remiao F, Cisternino S, Decleves X. Opioids and the Blood-Brain Barrier: A Dynamic Interaction with Consequences on Drug Disposition in Brain. Curr Neuropharmacol 2018; 15:1156-1173. [PMID: 28474563 PMCID: PMC5725546 DOI: 10.2174/1570159x15666170504095823] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 04/04/2017] [Accepted: 04/25/2017] [Indexed: 12/28/2022] Open
Abstract
Background: Opioids are widely used in pain management, acting via opioid receptors and/or Toll-like receptors (TLR) present at the central nervous system (CNS). At the blood-brain barrier (BBB), several influx and efflux transporters, such as the ATP-binding cassette (ABC) P-glycoprotein (P-gp, ABCB1), Breast Cancer Resistance Protein (BCRP, ABCG2) and multidrug resistance-associated proteins (MRP, ABCC) transporters, and solute carrier transporters (SLC), are responsible for the transport of xenobiotics from the brain into the bloodstream or vice versa. Objective: ABC transporters export several clinically employed opioids, altering their neuro- pharmacokinetics and CNS effects. In this review, we explore the interactions between opioids and ABC transporters, and decipher the molecular mechanisms by which opioids can modify their expression at the BBB. Results: P-gp is largely implicated in the brain-to-blood efflux of opioids, namely morphine and oxycodone. Long-term ex-posure to morphine and oxycodone has proven to up-regulate the expression of ABC transporters, such as P-gp, BCRP and MRPs, at the BBB, which may lead to increased tolerance to the antinociceptive effects of such drugs. Recent studies uncov-er two mechanisms by which morphine may up-regulate P-gp and BCRP at the BBB: 1) via a glutamate, NMDA-receptor and COX-2 signaling cascade, and 2) via TLR4 activation, subsequent development of neuro- inflammation, and activation of NF-κB, presumably via glial cells. Conclusion: The BBB-opioid interaction can culminate in bilateral consequences, since ABC transporters condition the brain disposition of opioids, while opioids also affect the expression of ABC transporters at the BBB, which may result in increased CNS drug pharmacoresistance.
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Affiliation(s)
- Catarina Chaves
- Variabilite de Reponse Aux Psychotropes, INSERM, U1144, 75006 Paris, France.,Universite Paris Descartes, UMR-S 1144, Paris, F-75006, France.,Universite Paris Diderot, UMR-S 1144, Paris, F-75013, France.,REQUIMTE, Laboratorio de Toxicologia, Departamento de Ciencias Biologicas, Faculdade de Farmacia, Universidade do Porto, Porto, Portugal
| | - Fernando Remiao
- REQUIMTE, Laboratorio de Toxicologia, Departamento de Ciencias Biologicas, Faculdade de Farmacia, Universidade do Porto, Porto, Portugal
| | - Salvatore Cisternino
- Variabilite de Reponse Aux Psychotropes, INSERM, U1144, 75006 Paris, France.,Universite Paris Descartes, UMR-S 1144, Paris, F-75006, France.,Universite Paris Diderot, UMR-S 1144, Paris, F-75013, France.,Assistance Publique Hopitaux de Paris, AP-HP, Paris, France
| | - Xavier Decleves
- Variabilite de Reponse Aux Psychotropes, INSERM, U1144, 75006 Paris, France.,Universite Paris Descartes, UMR-S 1144, Paris, F-75006, France.,Universite Paris Diderot, UMR-S 1144, Paris, F-75013, France.,Assistance Publique Hopitaux de Paris, AP-HP, Paris, France
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Khan IU, Yoon Y, Kim A, Jo KR, Choi KU, Jung T, Kim N, Son Y, Kim WH, Kweon OK. Improved Healing after the Co-Transplantation of HO-1 and BDNF Overexpressed Mesenchymal Stem Cells in the Subacute Spinal Cord Injury of Dogs. Cell Transplant 2018; 27:1140-1153. [PMID: 29909686 PMCID: PMC6158544 DOI: 10.1177/0963689718779766] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Abundant expression of proinflammatory cytokines after a spinal cord injury (SCI) creates an inhibitory microenvironment for neuroregeneration. The mesenchymal stem cells help to mitigate the inflammation and improve neural growth and survival. For this purpose, we potentiated the function of adipose-derived mesenchymal stem cells (Ad-MSCs) by transfecting them with brain-derived neurotrophic factor (BDNF) and heme oxygenase-1 (HO-1), through a lentivirus, to produce BDNF overexpressed Ad-MSCs (BDNF-MSCs), and HO-1 overexpressed Ad-MSCs (HO-1-MSCs). Sixteen SCI beagle dogs were randomly assigned into four treatment groups. We injected both HO-1 and BDNF-overexpressed MSCs as a combination group, to selectively control inflammation and induce neuroregeneration in SCI dogs, and compared this with BDNF-MSCs, HO-1-MSCs, and GFP-MSCs injected dogs. The groups were compared in terms of improvement in canine Basso, Beattie, and Bresnahan (cBBB) score during 8 weeks of experimentation. After 8 weeks, spinal cords were harvested and subjected to western blot analysis, immunofluorescent staining, and hematoxylin and eosin (H&E) staining. The combination group showed a significant improvement in hindlimb functions, with a higher BBB score, and a robust increase in neuroregeneration, depicted by a higher expression of Tuj-1, NF-M, and GAP-43 due to a decreased expression of the inflammatory markers interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α), and an increased expression of interleukin-10 (IL-10) (P ≤ 0.05). H&E staining showed more reduced intraparenchymal fibrosis in the combination group than in other groups (P ≤ 0.05). It was thus suggested that the cotransplantation of HO-1 and BDNF-MSCs is more effective in promoting the healing of SCI. HO-1-MSCs reduce inflammation, which favors BDNF-induced neuroregeneration in SCI of dogs.
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Affiliation(s)
- Imdad Ullah Khan
- 1 Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Korea
| | - Yongseok Yoon
- 1 Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Korea
| | - Ahyoung Kim
- 1 Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Korea
| | - Kwang Rae Jo
- 1 Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Korea
| | - Kyeung Uk Choi
- 1 Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Korea
| | - Taeseong Jung
- 1 Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Korea
| | - Namyul Kim
- 1 Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Korea
| | - YeonSung Son
- 1 Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Korea
| | - Wan Hee Kim
- 1 Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Korea
| | - Oh-Kyeong Kweon
- 1 Department of Veterinary Surgery, College of Veterinary Medicine, Seoul National University, Gwanak-gu, Seoul, Korea
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25
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Chen-Roetling J, Regan RF. Targeting the Nrf2-Heme Oxygenase-1 Axis after Intracerebral Hemorrhage. Curr Pharm Des 2018; 23:2226-2237. [PMID: 27799046 DOI: 10.2174/1381612822666161027150616] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 10/16/2016] [Accepted: 10/22/2016] [Indexed: 12/25/2022]
Abstract
BACKGROUND Injury to cells adjacent to an intracerebral hemorrhage (ICH) is likely mediated at least in part by toxins released from the hematoma that initiate complex and interacting injury cascades. Pharmacotherapies targeting a single toxin or pathway, even if consistently effective in controlled experimental models, have a high likelihood of failure in a variable clinical setting. Nuclear factor erythroid-2 related factor 2 (Nrf2) regulates the expression of heme oxygenase-1 (HO-1) and multiple other proteins with antioxidant and antiinflammatory effects, and may be a target of interest after ICH. METHODS Studies that tested the effect of HO and Nrf2 in models relevant to ICH are summarized, with an effort to reconcile conflicting data by consideration of methodological limitations. RESULTS In vitro studies demonstrated that Nrf2 activators rapidly increased HO-1 expression in astrocytes, and reduced their vulnerability to hemoglobin or hemin. Modulating HO-1 expression via genetic approaches yielded similar results. Systemic treatment with small molecule Nrf2 activators increased HO-1 expression in perivascular cells, particularly astrocytes. When tested in mouse or rat ICH models, Nrf2 activators were consistently protective, improving barrier function and attenuating edema, inflammation, neuronal loss and neurological deficits. These effects were mimicked by selective astrocyte HO-1 overexpression in transgenic mice. CONCLUSION Systemic treatment with Nrf2 activators after ICH is protective in rodents. Two compounds, dimethyl fumarate and hemin, are currently approved for treatment of multiple sclerosis and acute porphyria, respectively, and have acceptable safety profiles over years of clinical use. Further development of these drugs as ICH therapeutics seems warranted.
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Affiliation(s)
- Jing Chen-Roetling
- Department of Emergency Medicine, Thomas Jefferson University, 1025 Walnut Street, College Building Room 813, Philadelphia, PA 19107, United States
| | - Raymond F Regan
- Department of Emergency Medicine, Thomas Jefferson University, 1025 Walnut Street, College Building Room 813, Philadelphia, PA 19107, United States
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26
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Jeong B, Kim HR, Choi NS, Park BS, Eom H, Park JW, Kim JG, Lee BJ. Role of thyroid transcription factor-1 in transcriptional regulation of heme oxygenase-1. Biochem Biophys Res Commun 2018; 496:147-152. [PMID: 29305861 DOI: 10.1016/j.bbrc.2018.01.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 01/03/2018] [Indexed: 02/05/2023]
Abstract
Here, we report thyroid transcription factor 1 (TTF-1) as an important transcription factor for the expression of heme oxygenase-1 (HO-1). HO-1 is a well-known cytoprotective enzyme against inflammation. We observed that HO-1 co-expressed with TTF-1 in mouse hypothalamic cells. Results from luciferase and chromatin immunoprecipitation assays revealed that TTF-1 directly activated HO-1 transcription by binding to binding domains in the 5'-flanking region of the HO-1 gene. A proinflammatory cytokine, tumor necrosis factor-alpha (TNF-α), induced nuclear translocation of TTF-1 and increased binding affinity of TTF-1 to its binding sites on the HO-1 gene. HO-1 mRNA increased with TTF-1 overexpression but decreased with RNA interference of TTF-1 expression in rat astroglial C6 cells. Together with results showing involvement of TTF-1 in the TNF-α-induced increase in interleukin 1 beta and monocyte chemotactic protein 1 production, this study suggests that TTF-1 plays an important role in the mouse hypothalamus TNF-α-induced inflammatory response for regulating HO-1 gene expression.
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Affiliation(s)
- Bora Jeong
- Department of Biological Sciences, College of Natural Sciences, University of Ulsan, Ulsan 44610, South Korea
| | - Han Rae Kim
- Department of Biological Sciences, College of Natural Sciences, University of Ulsan, Ulsan 44610, South Korea
| | - Nan Seong Choi
- Department of Biological Sciences, College of Natural Sciences, University of Ulsan, Ulsan 44610, South Korea
| | - Byong Seo Park
- Department of Biomedical Sciences, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
| | - Hyejin Eom
- Department of Biological Sciences, College of Natural Sciences, University of Ulsan, Ulsan 44610, South Korea
| | - Jeong Woo Park
- Department of Biological Sciences, College of Natural Sciences, University of Ulsan, Ulsan 44610, South Korea
| | - Jae Geun Kim
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, South Korea
| | - Byung Ju Lee
- Department of Biological Sciences, College of Natural Sciences, University of Ulsan, Ulsan 44610, South Korea.
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Liu Y, Li F, Zhang L, Wu J, Wang Y, Yu H. Taurine alleviates lipopolysaccharide‑induced liver injury by anti‑inflammation and antioxidants in rats. Mol Med Rep 2017; 16:6512-6517. [PMID: 28901400 PMCID: PMC5865819 DOI: 10.3892/mmr.2017.7414] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 04/20/2017] [Indexed: 01/05/2023] Open
Abstract
The aim of the present study was to investigate the protective effect of taurine on lipopolysaccharide (LPS)-induced liver injury and its mechanisms. Male rats were randomly divided into three groups: Normal saline, LPS model and taurine treatment. Experimental animals were treated with saline or taurine (dissolved in saline, 200 mg/kg/day) via intravenous injection. After 2 h, saline or LPS (0.5 mg/kg) was administrated via intraperitoneal injection. Markers of liver injury, pro-inflammatory cytokines and superoxide dismutase (SOD) activity were determined in plasma. Liver tissues were removed for morphological analysis and determination by western blot analysis. Taurine significantly reduced the elevation in the levels of LPS-induced aspartate transaminase and alanine transaminase and decreased the concentrations of LPS-induced inflammatory factors including tumor necrosis factor-α and interleukin-6. Taurine also increased the activity of SOD in serum and the expression of heme oxygenase-1 protein in liver tissue. Taurine pretreatment also reduced the elevated expression levels of LPS-induced cyclooxygenase-2, nuclear factor κB and extracellular regulated protein kinase. The results from the present study demonstrated that taurine alleviates LPS-induced liver injury. The beneficial role of taurine may be associated with its reduction of pro-inflammatory response and oxidative stress.
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Affiliation(s)
- Yueyan Liu
- Department of Physiology, School of Clinical Medicine, West Anhui Health Vocational College, Lu'an, Anhui 237005, P.R. China
| | - Feng Li
- Department of Physiology, School of Clinical Medicine, West Anhui Health Vocational College, Lu'an, Anhui 237005, P.R. China
| | - Li Zhang
- Department of Anatomy, School of Clinical Medicine, West Anhui Health Vocational College, Lu'an, Anhui 237005, P.R. China
| | - Jianfeng Wu
- Department of Physiology, School of Clinical Medicine, West Anhui Health Vocational College, Lu'an, Anhui 237005, P.R. China
| | - Yanmei Wang
- Department of Anatomy, School of Clinical Medicine, West Anhui Health Vocational College, Lu'an, Anhui 237005, P.R. China
| | - Hong Yu
- Department of Physiology, School of Clinical Medicine, West Anhui Health Vocational College, Lu'an, Anhui 237005, P.R. China
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Liu C, Gao J, Chen B, Chen L, Belguise K, Yu W, Lu K, Wang X, Yi B. Cyclooxygenase-2 promotes pulmonary intravascular macrophage accumulation by exacerbating BMP signaling in rat experimental hepatopulmonary syndrome. Biochem Pharmacol 2017. [PMID: 28642034 DOI: 10.1016/j.bcp.2017.06.117] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND AND AIMS One central factor in hepatopulmonary syndrome (HPS) pathogenesis is intravascular accumulation of activated macrophages in small pulmonary arteries. However, molecular mechanism underlying the macrophage accumulation in HPS is unknown. In this study, we aimed to explore whether elevated COX-2 induces the Bone morphogenic protein-2 (BMP-2)/Crossveinless-2 (CV-2) imbalance and then activation of BMP signaling pathway promotes the macrophage accumulation in Common Bile Duct Ligation (CBDL) rat lung. METHODS The COX-2/PGE2 signaling activation, the BMP-2/CV-2 imbalance and the activation of Smad1 were evaluated in CBDL rat lung and in cultured pulmonary microvascular endothelial cells (PMVECs) under the HPS serum stimulation. The effects of Parecoxib (COX-2 inhibitor), BMP-2 and CV-2 recombinant proteins on 4-week CBDL rat lung were determined, respectively. RESULTS The COX-2/PGE2 signaling pathway was activated in CBDL rat lung in vivo and PMVECs in vitro, which was due to the activation of NF-κB P65. The inhibition of COX-2 by Parecoxib reduced macrophage accumulation, decreased lung angiogenesis and improved HPS. Meanwhile, the CBDL rat lung secreted more BMP-2 but less CV-2, and the imbalance between BMP-2 and CV-2 exacerbated the BMP signaling activation thus promoting the macrophage accumulation and lung angiogenesis. The BMP-2/CV-2 imbalance is dependent on the COX-2/PGE2 signaling pathway, and thus the effects of this imbalance can be reversed by adminstration of Parecoxib. CONCLUSION Our findings indicate that inhibition of COX-2 by parecoxib can improve the HPS through the repression of BMP signaling and macrophage accumulation.
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Affiliation(s)
- Chang Liu
- Department of Anesthesia, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China
| | - Jing Gao
- Department of Anesthesia, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China
| | - Bing Chen
- Department of Anesthesia, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China; LBCMCP, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Lin Chen
- Department of Anesthesia, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China
| | - Karine Belguise
- LBCMCP, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France
| | - Weifeng Yu
- Department of Anesthesia, RenJi Hospital, The Shanghai Jiao Tong University School of Medicine, Shanghai 200000, China
| | - Kaizhi Lu
- Department of Anesthesia, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China
| | - Xiaobo Wang
- Department of Anesthesia, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China; LBCMCP, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, 31062 Toulouse, France.
| | - Bin Yi
- Department of Anesthesia, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China.
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Brg1-mediated Nrf2/HO-1 pathway activation alleviates hepatic ischemia-reperfusion injury. Cell Death Dis 2017; 8:e2841. [PMID: 28569786 PMCID: PMC5520895 DOI: 10.1038/cddis.2017.236] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Revised: 04/20/2017] [Accepted: 04/26/2017] [Indexed: 12/11/2022]
Abstract
Cytoprotective gene heme oxygenase 1 (HO-1) could be induced by nuclear factor E2-related factor 2 (Nrf2) nuclear translocation. The purpose of this study was to determine the role of Brahma-related gene 1 (Brg1), a catalytic subunit of SWI2/SNF2-like chromatin remodeling complexes, in Nrf2/HO-1 pathway activation during hepatic ischemia–reperfusion (HIR). Our results showed that hepatic Brg1 was inhibited during early HIR while Brg1 overexpression reduced oxidative injury in CMV-Brg1 mice subjected to HIR. Moreover, promoter-driven luciferase assay showed that overexpression of Brg1 by adenovirus transfection in AML12 cells selectively enhanced HO-1 gene expression after hypoxia/reoxygenation (H/R) treatment but did not affect the other Nrf2 target gene NQO1. Furthermore, inhibition of HO-1 by the selective HO-1 inhibitor zinc protoporphyria could partly reverse the hepatic protective effects of Brg1 overexpression while HO-1-Adv attenuated AML12 cells H/R damage. Further, chromatin immunoprecipitation analysis revealed that Brg1 overexpression, which could significantly increase the recruitment of Brg1 protein to HO-1 but not NQO1 promoter, was recruited by Nrf2 to the HO-1 regulatory regions in AML12 hepatocytes subjected to H/R. In conclusion, our results demonstrated that restoration of Brg1 during reperfusion could enhance Nrf2-mediated inducible expression of HO-1 during HIR to effectively increase antioxidant ability to combat against hepatocytes damage.
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Shi Z, Ren H, Huang Z, Peng Y, He B, Yao X, Yuan TF, Su H. Fish Oil Prevents Lipopolysaccharide-Induced Depressive-Like Behavior by Inhibiting Neuroinflammation. Mol Neurobiol 2016; 54:7327-7334. [PMID: 27815837 DOI: 10.1007/s12035-016-0212-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 10/11/2016] [Indexed: 11/30/2022]
Abstract
Depression is associated with somatic immune changes, and neuroinflammation is now recognized as hallmark for depressive disorders. N-3 (or omega-3) polyunsaturated fatty acids (PUFAs) are well known to suppress neuroinflammation, reduce oxidative stress, and protect neuron from injury. We pretreated animals with fish oil and induced acute depression-like behaviors with systemic lipopolysaccharide (LPS) injection. The levels of cytokines and stress hormones were determined from plasma and different brain areas. The results showed that fish oil treatment prevent LPS-induce depressive behavior by suppression of neuroinflammation. LPS induced acute neuroinflammation in different brain regions, which were prevented in fish oil fed mice. However, neither LPS administration nor fish oil treatment has strong effect on stress hormone secretion in the hypothalamus and adrenal. Fish oil might provide a useful therapy against inflammation-associated depression.
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Affiliation(s)
- Zhe Shi
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Huixia Ren
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Zhijian Huang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Yu Peng
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Baixuan He
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiaoli Yao
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.
| | - Ti-Fei Yuan
- School of Psychology, Nanjing Normal University, Nanjing, China.
| | - Huanxing Su
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China.
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Huang NQ, Jin H, Zhou SY, Shi JS, Jin F. TLR4 is a link between diabetes and Alzheimer's disease. Behav Brain Res 2016; 316:234-244. [PMID: 27591966 DOI: 10.1016/j.bbr.2016.08.047] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/23/2016] [Accepted: 08/24/2016] [Indexed: 01/30/2023]
Abstract
Recently, more and more studies have shown that there is an essential link between diabetes mellitus (DM) and Alzheimer's disease (AD). In addition, innate immunity plays an important role in the occurrence and development of DM and AD, which increase the risk of developing type 2 diabetes (T2D) and AD. Although the pathogenesis of those diseases is still a matter of debate, the important role of Toll-like receptor 4 (TLR4) in the two diseases has been receiving much attention at present. TLR4 and insulin resistance do have close ties, and chronic TLR4 activation may contribute to the insulin resistance. Aside from this, TLR4-mediated chronic inflammation also causes many DM complications such as diabetic nephropathy, diabetic retinopathy and diabetic neuropathy and has a profound impact on the internal environment of the body and brain's microenvironment. In parallel, TLR4 is widely distributed in the brain and also has an important role in the central nervous system (CNS) via regulation of neuroinflammation. The cerebrum under the circumstances of insulin resistance may lead to mitochondrial dysfunction in neurons. Interestingly, in the initial stage, the activation of TLR4 has a useful scavenging effect on amyloid beta (Aβ), but chronic long-term activation leads to Aβ deposition in the brain. Therefore we speculate that the TLR4 signaling pathway may be a potential link between DM and AD.
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Affiliation(s)
- Nan-Qu Huang
- Department of Pharmacology and the Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical College, Guizhou, China
| | - Hai Jin
- Institute of Digestive Diseases of Affiliated Hospital, Zunyi Medical College, Guizhou, China
| | - Shao-Yu Zhou
- Department of Pharmacology and the Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical College, Guizhou, China; Department of Environmental Health, Indiana University, Bloomington, Indiana, United States
| | - Jing-Shan Shi
- Department of Pharmacology and the Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical College, Guizhou, China
| | - Feng Jin
- Department of Pharmacology and the Key Laboratory of Basic Pharmacology of Guizhou Province, Zunyi Medical College, Guizhou, China.
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Lee J, Kang U, Seo EK, Kim YS. Heme oxygenase-1-mediated anti-inflammatory effects of tussilagonone on macrophages and 12- O -tetradecanoylphorbol-13-acetate-induced skin inflammation in mice. Int Immunopharmacol 2016; 34:155-164. [DOI: 10.1016/j.intimp.2016.02.026] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 02/08/2016] [Accepted: 02/22/2016] [Indexed: 12/29/2022]
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Chien TY, Huang SKH, Lee CJ, Tsai PW, Wang CC. Antinociceptive and Anti-Inflammatory Effects of Zerumbone against Mono-Iodoacetate-Induced Arthritis. Int J Mol Sci 2016; 17:249. [PMID: 26901193 PMCID: PMC4783979 DOI: 10.3390/ijms17020249] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Revised: 02/05/2016] [Accepted: 02/06/2016] [Indexed: 01/19/2023] Open
Abstract
The fresh rhizome of Zingiber zerumbet Smith (Zingiberaceae) is used as a food flavoring and also serves as a folk medicine as an antipyretic and for analgesics in Taiwan. Zerumbone, a monocyclic sesquiterpene was isolated from the rhizome of Z. zerumbet and is the major active compound. In this study, the anti-inflammatory and antinociceptive effects of zerumbone on arthritis were explored using in vitro and in vivo models. Results showed that zerumbone inhibited inducible nitric oxide (NO) synthase (iNOS), cyclooxygenase (COX)-2 expressions, and NO and prostaglandin E₂ (PGE₂) production, but induced heme oxygenase (HO)-1 expression in a dose-dependent manner in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. When zerumbone was co-treated with an HO-1 inhibitor (tin protoporphyrin (SnPP)), the NO inhibitory effects of zerumbone were recovered. The above results suggest that zerumbone inhibited iNOS and COX-2 through induction of the HO-1 pathway. Moreover, matrix metalloproteinase (MMP)-13 and COX-2 expressions of interleukin (IL)-1β-stimulated primary rat chondrocytes were inhibited by zerumbone. In an in vivo assay, an acetic acid-induced writhing response in mice was significantly reduced by treatment with zerumbone. Furthermore, zerumbone reduced paw edema and the pain response in a mono-iodoacetate (MIA)-induced rat osteoarthritis model. Therefore, we suggest that zerumbone possesses anti-inflammatory and antinociceptive effects which indicate zerumbone could be a potential candidate for osteoarthritis treatment.
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Affiliation(s)
- Ting-Yi Chien
- Department of Food Science, Nutrition, and Nutraceutical Biotechnology, Shih Chien University, Taipei City 10462, Taiwan.
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei City 11031, Taiwan.
| | - Steven Kuan-Hua Huang
- Division of Uro-Oncology, Department of Surgery, Chi Mei Medical Center, Tainan City 73657, Taiwan.
- Department of Applied Life Science and Health, Chia Nan University of Pharmacy & Science, Tainan City 71710, Taiwan.
| | - Chia-Jung Lee
- Ph.D. Program for Clinical Drug Discovery of Chinese Herbal Medicine, College of Pharmacy, Taipei Medical University, Taipei City 11031, Taiwan.
| | - Po-Wei Tsai
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei City 11031, Taiwan.
| | - Ching-Chiung Wang
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei City 11031, Taiwan.
- Orthopedics Research Center, Taipei Medical University Hospital, Taipei City 11031, Taiwan.
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Upregulation of cugbp2 increases response of pancreatic cancer cells to chemotherapy. Langenbecks Arch Surg 2015; 401:99-111. [PMID: 26691217 DOI: 10.1007/s00423-015-1364-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 12/07/2015] [Indexed: 02/06/2023]
Abstract
PURPOSE Altered expression and/or function of ribosomal RNA (rRNA)-binding proteins CUGBP2/CELF2 might influence post-transcriptional regulation of the HO-1- and COX-2-mediated cytoprotective pathways and represents an important therapeutic target. The aim of this study was to assess the effects of CUGBP2-mediated post-transcriptional regulation of COX-2 and HO-1 in pancreatic cancer cells in regard of response to gemcitabine (GEM) treatment. METHODS Expression of CUGBP2, COX-2, and HO-1 was evaluated using qRT-PCR and Western blot methods. Cell viability after treatment with GEM and/or curcumin and siCUGBP2 was evaluated using MTT and crystal violet tests. RNA immunoprecipitation analysis was used to confirm COX-2 and HO-1 post-transcriptional regulation by CUGBP2 protein. RESULTS CUGBP2 expression at the messenger RNA (mRNA) level was 2.2-fold lower (p = 0.007), but HO-1 and COX-2 expression was increased 6.9- (p = 0.023) and 2.3- (p = 0.046) fold in pancreatic cancer tissues. The median survival of patients with low CUGBP2 expression from the lowest tercile was 13.8 months. The median survival of patients in terciles of middle and high CUGBP2 expression levels was 21.9 month (p = 0.123). Induction of CUGBP2 expression by curcumin resulted in the downregulation of HO-1 and COX-2 and strongly sensitized tumor cells to GEM treatment. However, CUGBP2 silencing upregulated HO-1 and COX-2 protein expression and had a high effect on cells viability. CONCLUSION Decreased activity of CUGBP2 could be associated with high chemoresistance and early dissemination of pancreatic cancer through the HO-1- and COX-2-mediated cytoprotective and carcinogenesis pathways. Curcumin significantly increased the effectiveness of GEM treatment in vitro via the CUGBP2-mediated post-transcriptional regulation pathway.
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Shih RH, Wang CY, Yang CM. NF-kappaB Signaling Pathways in Neurological Inflammation: A Mini Review. Front Mol Neurosci 2015; 8:77. [PMID: 26733801 PMCID: PMC4683208 DOI: 10.3389/fnmol.2015.00077] [Citation(s) in RCA: 558] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 11/30/2015] [Indexed: 12/14/2022] Open
Abstract
The NF-κB (nuclear factor κ-light-chain-enhancer of activated B cells) transcription factor family is a pleiotropic regulator of many cellular signaling pathways, providing a mechanism for the cells in response to a wide variety of stimuli linking to inflammation. The stimulated cells will be regulated by not only the canonical but also non-canonical NF-κB pathways. To initiate both of these pathways, IκB-degradation triggers NF-κB release and the nuclear translocated-heterodimer (or homodimer) can associate with the κB sites of promoter to regulate the gene transcriptions. NF-κB ubiquitously expresses in neurons and the constitutive NF-κB activation is associated with processing of neuronal information. NF-κB can regulate the transcription of genes such as chemokines, cytokines, proinflammatory enzymes, adhesion molecules, proinflammatory transcription factors, and other factors to modulate the neuronal survival. In neuronal insult, NF-κB constitutively active in neuron cell bodies can protect neurons against different injuries and regulate the neuronal inflammatory reactions. Besides neurons, NF-κB transcription factors are abundant in glial cells and cerebral blood vessels and the diverse functions of NF-κB also regulate the inflammatory reaction around the neuronal environment. NF-κB transcription factors are abundant in the brain and exhibit diverse functions. Several central nerve system (CNS) diseases are linked to NF-κB activated by inflammatory mediators. The RelA and c-Rel expression produce opposite effects on neuronal survival. Importantly, c-Rel expression in CNS plays a critical role in anti-apoptosis and reduces the age-related behaviors. Moreover, the different subunits of NF-κB dimer formation can modulate the neuroninflammation, neuronal protection, or neurotoxicity. The diverse functions of NF-κB depend on the subunits of the NF-κB dimer-formation which enable us to develop a therapeutic approach to neuroinflammation based on a new concept of inflammation as a strategic tool in neuronal cells. However, the detail role of NF-κB in neuroinflammation, remains to be clarified. In the present article, we provide an updated review of the current state of our knowledge about relationship between NF-κB and neuroinflammation.
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Affiliation(s)
- Ruey-Horng Shih
- Institute of Neuroscience, National Chengchi University Taipei, Taiwan
| | - Chen-Yu Wang
- Department of Physiology and Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung University Tao-Yuan, Taiwan
| | - Chuen-Mao Yang
- Department of Physiology and Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung University Tao-Yuan, Taiwan
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Heme-Mediated Induction of CXCL10 and Depletion of CD34+ Progenitor Cells Is Toll-Like Receptor 4 Dependent. PLoS One 2015; 10:e0142328. [PMID: 26555697 PMCID: PMC4640861 DOI: 10.1371/journal.pone.0142328] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 10/19/2015] [Indexed: 11/19/2022] Open
Abstract
Plasmodium falciparum infection can cause microvascular dysfunction, cerebral encephalopathy and death if untreated. We have previously shown that high concentrations of free heme, and C-X-C motif chemokine 10 (CXCL10) in sera of malaria patients induce apoptosis in microvascular endothelial and neuronal cells contributing to vascular dysfunction, blood-brain barrier (BBB) damage and mortality. Endothelial progenitor cells (EPC) are microvascular endothelial cell precursors partly responsible for repair and regeneration of damaged BBB endothelium. Studies have shown that EPC's are depleted in severe malaria patients, but the mechanisms mediating this phenomenon are unknown. Toll-like receptors recognize a wide variety of pathogen-associated molecular patterns generated by pathogens such as bacteria and parasites. We tested the hypothesis that EPC depletion during malaria pathogenesis is a function of heme-induced apoptosis mediated by CXCL10 induction and toll-like receptor (TLR) activation. Heme and CXCL10 concentrations in plasma obtained from malaria patients were elevated compared with non-malaria subjects. EPC numbers were significantly decreased in malaria patients (P < 0.02) and TLR4 expression was significantly elevated in vivo. These findings were confirmed in EPC precursors in vitro; where it was determined that heme-induced apoptosis and CXCL10 expression was TLR4-mediated. We conclude that increased serum heme mediates depletion of EPC during malaria pathogenesis.
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Carbon Monoxide Inhibits Tenascin-C Mediated Inflammation via IL-10 Expression in a Septic Mouse Model. Mediators Inflamm 2015; 2015:613249. [PMID: 26557739 PMCID: PMC4617695 DOI: 10.1155/2015/613249] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 08/31/2015] [Accepted: 09/01/2015] [Indexed: 01/07/2023] Open
Abstract
Tenascin-C (TN-C), an extracellular matrix (ECM) glycoprotein, is specifically induced upon tissue injury and infection and during septic conditions. Carbon monoxide (CO) gas is known to exert various anti-inflammatory effects in various inflammatory diseases. However, the mechanisms underlying the effect of CO on TN-C-mediated inflammation are unknown. In the present study, we found that treatment with LPS significantly enhanced TN-C expression in macrophages. CO gas, or treatment with the CO-donor compound, CORM-2, dramatically reduced LPS-induced expression of TN-C and proinflammatory cytokines while significantly increased the expression of IL-10. Treatment with TN-C siRNA significantly suppressed the effects of LPS on proinflammatory cytokines production. TN-C siRNA did not affect the CORM-2-dependent increase of IL-10 expression. In cells transfected with IL-10 siRNA, CORM-2 had no effect on the LPS-induced expression of TN-C and its downstream cytokines. These data suggest that IL-10 mediates the inhibitory effect of CO on TN-C and the downstream production of proinflammatory cytokines. Additionally, administration of CORM-2 dramatically reduced LPS-induced TN-C and proinflammatory cytokines production while expression of IL-10 was significantly increased. In conclusion, CO regulated IL-10 expression and thus inhibited TN-C-mediated inflammation in vitro and in vivo.
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Canavese M, Dottorini T, Crisanti A. VEGF and LPS synergistically silence inflammatory response to Plasmodium berghei infection and protect against cerebral malaria. Pathog Glob Health 2015; 109:255-65. [PMID: 26392042 DOI: 10.1179/2047773215y.0000000018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Malaria infection induces, alongside endothelial damage and obstruction hypoxia, a potent inflammatory response similar to that observed in other systemic diseases caused by bacteria and viruses. Accordingly, it is increasingly recognised that cerebral malaria (CM), the most severe and life threatening complication of Plasmodium falciparum infection, bears a number of similarities with sepsis, an often fatal condition associated with a misregulated inflammatory response triggered by systemic microbial infections. Using a Plasmodium berghei ANKA mouse model, histology, immunohistochemistry and gene expression analysis, we showed that lipopolysaccharide S (LPS), at doses that normally induce inflammation tolerance, protects P. berghei infected mice against experimental CM (ECM). Vascular endothelial growth factor (VEGF) preserved blood vessel integrity, and the combination with LPS resulted in a strong synergistic effect. Treated mice did not develop ECM, showed a prolonged survival and failed to develop a significant inflammatory response and splenomegaly in spite of normal parasite loads. The protective role of VEGF was further confirmed by the observation that the treatment of P. berghei infected C57BL/6 and Balb/c mice with the VEGF receptor inhibitor axitinib exacerbates cerebral pathology and aggravates the course of infection. Infected mice treated with VEGF and LPS showed an induction of the anti-inflammatory genes Nrf2 and HO-1 and a suppression to basal levels of the genes IFN-γ and TNF-α. These results provide the rationale for developing new therapeutic approaches against CM and shed new light on how the inflammatory process can be modulated in the presence of systemic infectious diseases.
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Lin HY, Tsai CH, Lin C, Yeh WL, Tsai CF, Chang PC, Wu LH, Lu DY. Cobalt Protoporphyrin Upregulates Cyclooxygenase-2 Expression Through a Heme Oxygenase-Independent Mechanism. Mol Neurobiol 2015; 53:4497-508. [PMID: 26255181 DOI: 10.1007/s12035-015-9376-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 07/22/2015] [Indexed: 12/31/2022]
Abstract
Cobalt protoporphyrin (CoPP) is a potent HO-1 inducer and generally known to be an antioxidant in various cell types. Little is known about the CoPP-induced cyclooxygenase-2 (COX-2) expression and its downstream signaling in microglial cells. In current study, CoPP caused concentration- and time-dependent increases in COX-2 expression in microglial cells. Furthermore, activation of apoptosis signal-regulating kinase (ASK) 1/MAP kinase involved in CoPP-induced COX-2 expression in microglia. CoPP also induced P2X7 receptor activation, and treatment of P2X7 inhibitors effectively reduced CoPP-induced COX-2 expression. Protein inhibitor of activated STAT (PIAS) 1 is reported to be involved in modulating anti-inflammatory response through negative regulation of transcription factors. Interestingly, treatment with CoPP markedly induced PIAS1 degradation which is regulated by PI3K, Akt, and glycogen synthase kinase 3α/β (GSK3α/β) signaling pathways. These results suggest that CoPP induces COX-2 expression through activating P2X7 receptors and ASK1/MAP kinases as well as PIAS1 degradation signaling pathways. Our study provides a new insight into the regulatory effect of CoPP on neuroinflammation in microglial cells.
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Affiliation(s)
- Hsiao-Yun Lin
- Graduate Institute of Neural and Cognitive Sciences, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan
| | - Chon-Haw Tsai
- Graduate Institute of Neural and Cognitive Sciences, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan
- Department of Neurology, China Medical University Hospital, Taichung, Taiwan
| | - Chingju Lin
- Department of Physiology, School of Medicine, China Medical University, Taichung, Taiwan
| | - Wei-Lan Yeh
- Department of Cell and Tissue Engineering, Changhua Christian Hospital, Changhua, Taiwan
| | - Cheng-Fang Tsai
- Department of Biotechnology, Asia University, Taichung, Taiwan
| | - Pei-Chun Chang
- Department of Bioinformatics, Asia University, Taichung, Taiwan
| | - Ling-Hsuan Wu
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Dah-Yuu Lu
- Graduate Institute of Neural and Cognitive Sciences, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan.
- Department of Photonics and Communication Engineering, Asia University, Taichung, Taiwan.
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Sickness: From the focus on cytokines, prostaglandins, and complement factors to the perspectives of neurons. Neurosci Biobehav Rev 2015; 57:30-45. [PMID: 26363665 DOI: 10.1016/j.neubiorev.2015.07.015] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 07/06/2015] [Accepted: 07/31/2015] [Indexed: 12/29/2022]
Abstract
Systemic inflammation leads to a variety of physiological (e.g. fever) and behavioral (e.g. anorexia, immobility, social withdrawal, depressed mood, disturbed sleep) responses that are collectively known as sickness. While these phenomena have been studied for the past few decades, the neurobiological mechanisms by which sickness occurs remain unclear. In this review, we first revisit how the body senses and responds to infections and injuries by eliciting systemic inflammation. Next, we focus on how peripheral inflammatory molecules such as cytokines, prostaglandins, and activated complement factors communicate with the brain to trigger neuroinflammation and sickness. Since depression also involves inflammation, we further elaborate on the interrelationship between sickness and depression. Finally, we discuss how immune activation can modulate neurons in the brain, and suggest future perspectives to help unravel how changes in neuronal functions relate to sickness responses.
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Wu SJ. Osthole Attenuates Inflammatory Responses and Regulates the Expression of Inflammatory Mediators in HepG2 Cells Grown in Differentiated Medium from 3T3-L1 Preadipocytes. J Med Food 2015; 18:972-9. [PMID: 25876063 DOI: 10.1089/jmf.2014.3314] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
This study explored the anti-inflammatory mechanisms by which osthole acted on HepG2 cells cultured in a differentiated medium from cultured 3T3-L1 preadipocyte cells. HepG2 cells, a human liver cell line, were treated with various concentrations of osthole in differentiated media from cultured 3T3-L1 cells to evaluate proinflammatory cytokines, inflammatory mediators, and signaling pathways. We used enzyme-linked immunosorbent assay kits to determine the levels of proinflammatory cytokines, real-time polymerase chain reaction to assay the mRNA expression, and western blot to determine the expression of cyclooxygenase-2 (COX-2) and heme oxygenase-1 (HO-1) proteins. We also investigated inflammatory mechanism pathway members, including mitogen-activated protein kinase (MAPK) and nuclear transcription factor kappa-B (NF-κB). Osthole was able to suppress the levels of proinflammatory cytokines interleukin (IL)-1β and IL-6, as well as chemokines monocyte chemoattractant protein-1 and IL-8. In addition, COX-2 was suppressed and HO-1 expression was increased in a concentration-dependent manner. Osthole was also able to decrease IκB-α phosphorylation and suppress the phosphorylation of MAPKs. These results suggest that osthole has anti-inflammatory effects as demonstrated by the decreased proinflammatory cytokine and mediator production through suppression of the NF-κB and MAPK signaling pathways in HepG2 cells when they are incubated on the differentiated medium from 3T3-L1 cells.
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Affiliation(s)
- Shu-Ju Wu
- 1 Department of Nutrition and Health Sciences, Chang Gung University of Science and Technology , Tao-Yuan, Taiwan .,2 Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology , Tao-Yuan, Taiwan
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Duval F, Moreno-Cuevas JE, González-Garza MT, Maldonado-Bernal C, Cruz-Vega DE. Liver fibrosis and mechanisms of the protective action of medicinal plants targeting inflammation and the immune response. Int J Inflam 2015; 2015:943497. [PMID: 25954568 PMCID: PMC4411506 DOI: 10.1155/2015/943497] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 11/29/2014] [Indexed: 12/12/2022] Open
Abstract
Inflammation is a central feature of liver fibrosis as suggested by its role in the activation of hepatic stellate cells leading to extracellular matrix deposition. During liver injury, inflammatory cells are recruited in the injurious site through chemokines attraction. Thus, inflammation could be a target to reduce liver fibrosis. The pandemic trend of obesity, combined with the high incidence of alcohol intake and viral hepatitis infections, highlights the urgent need to find accessible antifibrotic therapies. Medicinal plants are achieving popularity as antifibrotic agents, supported by their safety, cost-effectiveness, and versatility. The aim of this review is to describe the role of inflammation and the immune response in the pathogenesis of liver fibrosis and detail the mechanisms of inhibition of both events by medicinal plants in order to reduce liver fibrosis.
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Affiliation(s)
- Florent Duval
- Catedra de Terapia Celular, Escuela de Medicina, Tecnológico de Monterrey, Avenida Morones Prieto 3000 Pte., 64710 Monterrey, NL, Mexico
| | - Jorge E. Moreno-Cuevas
- Catedra de Terapia Celular, Escuela de Medicina, Tecnológico de Monterrey, Avenida Morones Prieto 3000 Pte., 64710 Monterrey, NL, Mexico
| | - María Teresa González-Garza
- Catedra de Terapia Celular, Escuela de Medicina, Tecnológico de Monterrey, Avenida Morones Prieto 3000 Pte., 64710 Monterrey, NL, Mexico
| | - Carmen Maldonado-Bernal
- Laboratorio de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Calle Dr. Márquez 162, 06720 Ciudad de México, DF, Mexico
| | - Delia Elva Cruz-Vega
- Catedra de Terapia Celular, Escuela de Medicina, Tecnológico de Monterrey, Avenida Morones Prieto 3000 Pte., 64710 Monterrey, NL, Mexico
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IRG1 induced by heme oxygenase-1/carbon monoxide inhibits LPS-mediated sepsis and pro-inflammatory cytokine production. Cell Mol Immunol 2015; 13:170-9. [PMID: 25640654 PMCID: PMC4786624 DOI: 10.1038/cmi.2015.02] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 01/03/2015] [Accepted: 01/03/2015] [Indexed: 01/12/2023] Open
Abstract
The immunoresponsive gene 1 (IRG1) protein has crucial functions in embryonic implantation and neurodegeneration. IRG1 promotes endotoxin tolerance by increasing A20 expression in macrophages through reactive oxygen species (ROS). The cytoprotective protein heme oxygenase-1 (HO-1), which generates endogenous carbon monoxide (CO), is expressed in the lung during Lipopolysaccharide (LPS) tolerance and cross tolerance. However, the detailed molecular mechanisms and functional links between IRG1 and HO-1 in the innate immune system remain unknown. In the present study, we found that the CO releasing molecule-2 (CORM-2) and chemical inducers of HO-1 increased IRG1 expression in a time- and dose-dependent fashion in RAW264.7 cells. Furthermore, inhibition of HO-1 activity by zinc protoporphyrin IX (ZnPP) and HO-1 siRNA significantly reduced expression of IRG1 under these conditions. In addition, treatment with CO and HO-1 induction significantly increased A20 expression, which was reversed by ZnPP and HO-1 siRNA. LPS-stimulated TNF-α was significantly decreased, whereas IRG1 and A20 were increased by CORM-2 application and HO-1 induction, which in turn were abrogated by ZnPP. Interestingly, siRNA against IRG1 and A20 reversed the effects of CO and HO-1 on LPS-stimulated TNF-α production. Additionally, CO and HO-1 inducers significantly increased IRG1 and A20 expression and downregulated TNF-α production in a LPS-stimulated sepsis mice model. Furthermore, the effects of CO and HO-1 on TNF-α production were significantly reversed when ZnPP was administered. In conclusion, CO and HO-1 induction regulates IRG1 and A20 expression, leading to inhibition of inflammation in vitro and in an in vivo mice model.
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Abdalla MY, Ahmad IM, Switzer B, Britigan BE. Induction of heme oxygenase-1 contributes to survival of Mycobacterium abscessus in human macrophages-like THP-1 cells. Redox Biol 2015; 4:328-39. [PMID: 25638774 PMCID: PMC4326180 DOI: 10.1016/j.redox.2015.01.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 01/16/2015] [Accepted: 01/17/2015] [Indexed: 12/25/2022] Open
Abstract
Mycobacterium abscessus (M.abs) is a rapidly growing mycobacterial species that infects macrophages, and is an important pathogen in patients with cystic fibrosis. We studied the early stages of M.abs infection of macrophages, with emphasis on the role of heme-oxygenase-1 (HO-1) in this infection. THP-1 cells were activated using TPA into macrophage-like cells and infected with M.abs for different time points. M.abs infection robustly induced HO-1 expression in the THP-1 cells. Production of HO-1 was p38 MAPK-dependent, as p38 inhibitors suppressed HO-1 induction. Pretreatment with HO-1 inhibitors tin-protoporphyrin (SnPP) significantly inhibited M.abs growth inside macrophages. Furthermore, inhibiting HO-1 using HO-1 siRNA or the HO-1 upstream signaling molecule; Nrf2 using Nrf2 siRNA resulted in similar inhibition of M.abs. In contrast, inducing HO-1 did not increase M.abs intracellular growth above control. Products of HO-1 metabolism of heme are bilirubin, biliverdin, carbon monoxide (CO) and iron. The addition of either bilirubin or biliverdin, but not CO, completely restored the SnPP inhibitory effect and partially that with HO-1 siRNA. To understand the mechanisms, we used Syto-62 labeled M.abs to infect macrophages. Interestingly, HO-1 inhibition promoted M.abs-containing phagosome fusion with lysosomes, which should enhance M.abs killing. M.abs infection enhanced THP-1 ROS production as demonstrated by increased DHE, DCF fluorescence, and EPR signal. HO-1 inhibition further increased ROS production in infected macrophages. Our results indicate that HO-1 induction is important for M.abs growth during the early stages of infection, and that the HO-1 products bilirubin and biliverdin, perhaps through modulation of intracellular ROS levels, may be involved. HO-1 induction is important for Mycobacterium abscessus growth inside infected macrophages during the early stages of infection. Reducing HO-1 products may enhance the ability of the macrophage to control Mycobacterium abscessus infection. HO-1 inhibition increases phagosome–lysosome fusion and thus Mycobacterium abscessus killing.
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Affiliation(s)
- Maher Y Abdalla
- Research Service, VA Medical Center-Omaha Nebraska Western Iowa, Omaha, NE 68105, USA; Department of Pathology and Microbiology, University of Nebraska Medical Center College of Medicine, Omaha, NE 68198, USA; Department of Internal Medicine, University of Nebraska Medical Center College of Medicine, Omaha, NE 68198, USA.
| | - Iman M Ahmad
- School of Allied Health Professions, University of Nebraska Medical Center College of Medicine, Omaha, NE 68198, USA
| | - Barbara Switzer
- Research Service, VA Medical Center-Omaha Nebraska Western Iowa, Omaha, NE 68105, USA; Department of Internal Medicine, University of Nebraska Medical Center College of Medicine, Omaha, NE 68198, USA
| | - Bradley E Britigan
- Research Service, VA Medical Center-Omaha Nebraska Western Iowa, Omaha, NE 68105, USA; Department of Pathology and Microbiology, University of Nebraska Medical Center College of Medicine, Omaha, NE 68198, USA; Department of Internal Medicine, University of Nebraska Medical Center College of Medicine, Omaha, NE 68198, USA
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Branco LG, Soriano RN, Steiner AA. Gaseous Mediators in Temperature Regulation. Compr Physiol 2014; 4:1301-38. [DOI: 10.1002/cphy.c130053] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Activation of adult rat CNS endothelial cells by opioid-induced toll-like receptor 4 (TLR4) signaling induces proinflammatory, biochemical, morphological, and behavioral sequelae. Neuroscience 2014; 280:299-317. [PMID: 25241065 DOI: 10.1016/j.neuroscience.2014.09.020] [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: 07/08/2014] [Revised: 09/05/2014] [Accepted: 09/10/2014] [Indexed: 12/21/2022]
Abstract
CNS immune signaling contributes to deleterious opioid effects including hyperalgesia, tolerance, reward, and dependence/withdrawal. Such effects are mediated by opioid signaling at toll-like receptor 4 (TLR4), presumptively of glial origin. Whether CNS endothelial cells express TLR4 is controversial. If so, they would be well positioned for activation by blood-borne opioids, contributing to opioid-induced pro-inflammatory responses. These studies examined adult primary rat CNS endothelial cell responses to (-)-morphine or its mu opioid receptor (MOR)-inactive metabolite morphine-3-glucuronide (M3G), both known TLR4 agonists. We demonstrate that adult rat CNS endothelial cells express functional TLR4. M3G activated nuclear factor kappaB (NF-κB), increased tumor necrosis factor-α (TNFα) and cyclooxygenase-2 (COX2) mRNAs, and released prostaglandin E2 (PGE2) from these cells. (-)-Morphine-induced upregulation of TNFα mRNA and PGE2 release were unmasked by pre-treatment with nalmefene, a MOR antagonist without TLR4 activity (unlike CTAP, shown to have both MOR- and TLR4-activity), suggestive of an interplay between MOR and TLR4 co-activation by (-)-morphine. In support, MOR-dependent Protein Kinase A (PKA) opposed TLR4 signaling, as PKA inhibition (H-89) also unmasked (-)-morphine-induced TNFα and COX2 mRNA upregulation. Intrathecal injection of CNS endothelial cells, stimulated in vitro with M3G, produced TLR4-dependent tactile allodynia. Further, cortical suffusion with M3G in vivo induced TLR4-dependent vasodilation. Finally, endothelial cell TLR4 activation by lipopolysaccharide and/or M3G was blocked by the glial inhibitors AV1013 and propentofylline, demonstrating endothelial cells as a new target of such drugs. These data indicate that (-)-morphine and M3G can activate CNS endothelial cells via TLR4, inducing proinflammatory, biochemical, morphological, and behavioral sequelae. CNS endothelial cells may have previously unanticipated roles in opioid-induced effects, in phenomena blocked by presumptive glial inhibitors, as well as TLR4-mediated phenomena more broadly.
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Wang Y, Ying L, Chen YY, Shen YL, Guo R, Jin KK, Wang LX. Reprint of “Induction of heme oxygenase-1 ameliorates vascular dysfunction in streptozotocin-induced type 2 diabetic rats”. Vascul Pharmacol 2014. [DOI: 10.1016/j.vph.2014.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Calay D, Mason JC. The multifunctional role and therapeutic potential of HO-1 in the vascular endothelium. Antioxid Redox Signal 2014; 20:1789-809. [PMID: 24131232 DOI: 10.1089/ars.2013.5659] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
SIGNIFICANCE Heme oxygenases (HO-1 and HO-2) catalyze the degradation of the pro-oxidant heme into carbon monoxide (CO), iron, and biliverdin, which is subsequently converted to bilirubin. In the vasculature, particular interest has focused on antioxidant and anti-inflammatory properties of the inducible HO-1 isoform in the vascular endothelium. This review will present evidence that illustrates the potential therapeutic significance of HO-1 and its products, with special emphasis placed on their beneficial effects on the endothelium in vascular diseases. RECENT ADVANCES The understanding of the molecular basis for the regulation and functions of HO-1 has led to the identification of a variety of drugs that increase HO-1 activity in the vascular endothelium. Moreover, therapeutic delivery of HO-1 products CO, biliverdin, and bilirubin has been shown to have favorable effects, notably on endothelial cells and in animal models of vascular disease. CRITICAL ISSUES To date, mechanistic data identifying the downstream target genes utilized by HO-1 and its products to exert their actions remain relatively sparse. Likewise, studies in man to investigate the efficacy of therapeutics known to induce HO-1 or the consequences of the tissue-specific delivery of CO or biliverdin/bilirubin are rarely performed. FUTURE DIRECTIONS Based on the promising in vivo data from animal models, clinical trials to explore the safety and efficacy of the therapeutic induction of HO-1 and the delivery of its products should now be pursued further, targeting, for example, patients with severe atherosclerotic disease, ischemic limbs, restenosis injury, or at high risk of organ rejection.
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Affiliation(s)
- Damien Calay
- Vascular Sciences Unit, National Heart and Lung Institute , Imperial Centre for Translational & Experimental Medicine, Imperial College London Hammersmith Hospital, London, United Kingdom
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Wegiel B, Nemeth Z, Correa-Costa M, Bulmer AC, Otterbein LE. Heme oxygenase-1: a metabolic nike. Antioxid Redox Signal 2014; 20:1709-22. [PMID: 24180257 PMCID: PMC3961788 DOI: 10.1089/ars.2013.5667] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Accepted: 11/01/2013] [Indexed: 10/26/2022]
Abstract
SIGNIFICANCE Heme degradation, which was described more than 30 years ago, is still very actively explored with many novel discoveries on its role in various disease models every year. RECENT ADVANCES The heme oxygenases (HO) are metabolic enzymes that utilize NADPH and oxygen to break apart the heme moiety liberating biliverdin (BV), carbon monoxide (CO), and iron. Heme that is derived from hemoproteins can be toxic to the cells and if not removed immediately, it causes cell apoptosis and local inflammation. Elimination of heme from the milieu enables generation of three products that influences numerous metabolic changes in the cell. CRITICAL ISSUES CO has profound effects on mitochondria and cellular respiration and other hemoproteins to which it can bind and affect their function, while BV and bilirubin (BR), the substrate and product of BV, reductase, respectively, are potent antioxidants. Sequestration of iron into ferritin and its recycling in the tissues is a part of the homeodynamic processes that control oxidation-reduction in cellular metabolism. Further, heme is an important component of a number of metabolic enzymes, and, therefore, HO-1 plays an important role in the modulation of cellular bioenergetics. FUTURE DIRECTIONS In this review, we describe the cross-talk between heme oxygenase-1 (HO-1) and its products with other metabolic pathways. HO-1, which we have labeled Nike, the goddess who personified victory, dictates triumph over pathophysiologic conditions, including diabetes, ischemia, and cancer.
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Affiliation(s)
- Barbara Wegiel
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Zsuzsanna Nemeth
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Department of Tumor Biology, National Koranyi Institute of Pulmonology, Budapest, Hungary
| | - Matheus Correa-Costa
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Andrew C. Bulmer
- Heart Foundation Research Centre, Griffith Health Institute, Griffith University, Queensland, Australia
| | - Leo E. Otterbein
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
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Jayakumar AR, Tong XY, Curtis KM, Ruiz-Cordero R, Abreu MT, Norenberg MD. Increased toll-like receptor 4 in cerebral endothelial cells contributes to the astrocyte swelling and brain edema in acute hepatic encephalopathy. J Neurochem 2014; 128:890-903. [PMID: 24261962 PMCID: PMC3951576 DOI: 10.1111/jnc.12516] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 09/10/2013] [Accepted: 10/17/2013] [Indexed: 12/14/2022]
Abstract
Astrocyte swelling and the subsequent increase in intracranial pressure and brain herniation are major clinical consequences in patients with acute hepatic encephalopathy. We recently reported that conditioned media from brain endothelial cells (ECs) exposed to ammonia, a mixture of cytokines (CKs) or lipopolysaccharide (LPS), when added to astrocytes caused cell swelling. In this study, we investigated the possibility that ammonia and inflammatory agents activate the toll-like receptor 4 (TLR4) in ECs, resulting in the release of factors that ultimately cause astrocyte swelling. We found a significant increase in TLR4 protein expression when ECs were exposed to ammonia, CKs or LPS alone, while exposure of ECs to a combination of these agents potentiate such effects. In addition, astrocytes exposed to conditioned media from TLR4-silenced ECs that were treated with ammonia, CKs or LPS, resulted in a significant reduction in astrocyte swelling. TLR4 protein up-regulation was also detected in rat brain ECs after treatment with the liver toxin thioacetamide, and that thioacetamide-treated TLR4 knock-out mice exhibited a reduction in brain edema. These studies strongly suggest that ECs significantly contribute to the astrocyte swelling/brain edema in acute hepatic encephalopathy, likely as a consequence of increased TLR4 protein expression by blood-borne noxious agents.
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Affiliation(s)
- Arumugam R Jayakumar
- Laboratory of Neuropathology, Veterans Affairs Medical Center, Miami, Florida, USA; Department of Pathology, University of Miami Miller School of Medicine, Miami, Florida, USA
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