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Salana S, Verma V. Review of in vitro studies evaluating respiratory toxicity of aerosols: impact of cell types, chemical composition, and atmospheric processing. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2024. [PMID: 39291816 DOI: 10.1039/d4em00475b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2024]
Abstract
In recent decades, several cell-based and acellular methods have been developed to evaluate ambient particulate matter (PM) toxicity. Although cell-based methods provide a more comprehensive assessment of PM toxicity, their results are difficult to comprehend due to the diversity in cellular endpoints, cell types, and assays and the interference of PM chemical components with some of the assays' techniques. In this review, we attempt to clarify some of these issues. We first discuss the morphological and immunological differences among various macrophage and epithelial cells, belonging to the respiratory systems of human and murine species, used in the in vitro studies evaluating PM toxicity. Then, we review the current state of knowledge on the role of different PM chemical components and the relevance of atmospheric processing and aging of aerosols in the respiratory toxicity of PM. Our review demonstrates the need to adopt more physiologically relevant cellular models such as epithelial (or endothelial) cells instead of macrophages for oxidative stress measurement. We suggest limiting macrophages for investigating other cellular responses (e.g., phagocytosis, inflammation, and DNA damage). Unlike monocultures (of macrophages and epithelial cells), which are generally used to study the direct effects of PM on a given cell type, the use of co-culture systems should be encouraged to investigate a more comprehensive effect of PM in the presence of other cells. Our review has identified two major groups of toxic PM chemical species from the existing literature, i.e., metals (Fe, Cu, Mn, Cr, Ni, and Zn) and organic compounds (PAHs, ketones, aliphatic and chlorinated hydrocarbons, and quinones). However, the relative toxicities of these species are still a matter of debate. Finally, the results of the existing studies investigating the effect of aging on PM toxicity are ambiguous, with varying results due to different cell types, different aging conditions, and the presence/absence of specific oxidants. More systematic studies are necessary to understand the role of different SOA precursors, interactions between different PM components, and aging conditions in the overall toxicity of PM. We anticipate that our review will guide future investigations by helping researchers choose appropriate cell models, resulting in a more meaningful interpretation of cell-based assays and thus ultimately leading to a better understanding of the health effects of PM exposure.
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Affiliation(s)
- Sudheer Salana
- Department of Civil and Environmental Engineering, University of Illinois at Urbana Champaign, Urbana, 61801, USA.
| | - Vishal Verma
- Department of Civil and Environmental Engineering, University of Illinois at Urbana Champaign, Urbana, 61801, USA.
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2
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Hossain T, Eckmann DM. Hyperoxic exposure alters intracellular bioenergetics distribution in human pulmonary cells. Life Sci 2023:121880. [PMID: 37356749 DOI: 10.1016/j.lfs.2023.121880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/24/2023] [Accepted: 06/22/2023] [Indexed: 06/27/2023]
Abstract
AIMS Pulmonary oxygen toxicity is caused by exposure to a high fraction of inspired oxygen, which damages multiple cell types within the lung. The cellular basis for pulmonary oxygen toxicity includes mitochondrial dysfunction. The aim of this study was to identify the effects of hyperoxic exposure on mitochondrial bioenergetic and dynamic functions in pulmonary cells. MAIN METHODS Mitochondrial respiration, inner membrane potential, dynamics (including motility), and distribution of mitochondrial bioenergetic capacity in two intracellular regions were quantified using cultured human lung microvascular endothelial cells, human pulmonary artery endothelial cells and A549 cells. Hyperoxic (95 % O2) exposures lasted 24, 48 and 72 h, durations relevant to mechanical ventilation in intensive care settings. KEY FINDINGS Mitochondrial motility was altered following all hyperoxic exposures utilized in experiments. Inhomogeneities in inner membrane potential and respiration parameters were present in each cell type following hyperoxia. The partitioning of ATP-linked respiration was also hyperoxia-duration and cell type dependent. Hyperoxic exposure lasting 48 h or longer provoked the largest alterations in mitochondrial motility and the greatest decreases in ATP-linked respiration, with a suggestion of decreases in respiration complex protein levels. SIGNIFICANCE Hyperoxic exposures of different durations produce intracellular inhomogeneities in mitochondrial dynamics and bioenergetics in pulmonary cells. Oxygen therapy is utilized commonly in clinical care and can induce undesirable decrements in bioenergy function needed to maintain pulmonary cell function and viability. There may be adjunctive or prophylactic measures that can be employed during hyperoxic exposures to prevent the mitochondrial dysfunction that signals the presence of oxygen toxcity.
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Affiliation(s)
- Tanvir Hossain
- Department of Anesthesiology, The Ohio State University, Columbus, OH 43210, United States of America
| | - David M Eckmann
- Department of Anesthesiology, The Ohio State University, Columbus, OH 43210, United States of America; Center for Medical and Engineering Innovation, The Ohio State University, Columbus, OH 43210, United States of America.
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3
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Zheng L, Zhang J, Wu Y, Li L, Ling J, Wang S, Yang W, Yin Y, Dong L, Zhang Y. A Tiered Ecological Risk Assessment of Caffeine by Using Species Sensitivity Distribution Method in the Nansi Lake Basin. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 110:72. [PMID: 36995456 DOI: 10.1007/s00128-023-03697-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 02/01/2023] [Indexed: 06/19/2023]
Abstract
Caffeine has been reported toxic to aquatic organisms, and it frequently occurs at relatively high concentrations in most of surface waters. However, it is difficult to control caffeine pollution because of the lack of Water Quality Criteria (WQC). In this study, species sensitivity distribution method and Log-normal model were applied to derive caffeine WQC as 83.7 ng/L. Meanwhile, concentrations of caffeine in the Nansi Lake basin were detected in 29 sampling sites, with the mean of 99.3 ng/L. The levels of caffeine in tributaries were higher than those in the lakes. In addition, a tied ecological risk assessment method was applied to assess the adverse effect of caffeine on aquatic system. The joint probability curve indicated that ecological risk might exist 3.1% of surface water in the study area, while 5% threshold (HC5) was set up to protect aquatic species. Generally, caffeine posted a low risk to aquatic organisms in the Nansi Lake basin.
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Affiliation(s)
- Lei Zheng
- State Environmental Protection Key laboratory of Dioxin Pollution, National Research Center of Environmental Analysis and Measurement, Beijing, 100029, China
- Sino-Japan Friendship Center for Environmental Protection, Beijing, 100029, China
| | - Juan Zhang
- Foreign Environmental Cooperation Center, Ministry of Ecology and Environment, Beijing, 100035, China
| | - Yinan Wu
- Sino-Japan Friendship Center for Environmental Protection, Beijing, 100029, China
| | - Linlin Li
- Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Junhong Ling
- PowerChina Beijing Engineering Corporation Limited, Beijing, 100024, China
| | - Sai Wang
- State Environmental Protection Key laboratory of Dioxin Pollution, National Research Center of Environmental Analysis and Measurement, Beijing, 100029, China
- Sino-Japan Friendship Center for Environmental Protection, Beijing, 100029, China
| | - Wenlong Yang
- State Environmental Protection Key laboratory of Dioxin Pollution, National Research Center of Environmental Analysis and Measurement, Beijing, 100029, China
- Sino-Japan Friendship Center for Environmental Protection, Beijing, 100029, China
| | - Yezhu Yin
- State Environmental Protection Key laboratory of Dioxin Pollution, National Research Center of Environmental Analysis and Measurement, Beijing, 100029, China
- Sino-Japan Friendship Center for Environmental Protection, Beijing, 100029, China
| | - Liang Dong
- State Environmental Protection Key laboratory of Dioxin Pollution, National Research Center of Environmental Analysis and Measurement, Beijing, 100029, China
- Sino-Japan Friendship Center for Environmental Protection, Beijing, 100029, China
| | - Yizhang Zhang
- Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
- Research Institute for Environmental Innovation (Tianjin Binhai), Tianjin, 300457, China.
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In Vitro Anticancer Activity of Novel Ciprofloxacin Mannich Base in Lung Adenocarcinoma and High-Grade Serous Ovarian Cancer Cell Lines via Attenuating MAPK Signaling Pathway. Molecules 2023; 28:molecules28031137. [PMID: 36770806 PMCID: PMC9921546 DOI: 10.3390/molecules28031137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/29/2022] [Accepted: 01/13/2023] [Indexed: 01/26/2023] Open
Abstract
Novel drugs are desperately needed in order to combat a significant challenge due to chemo-therapeutic resistance and bad prognosis. This research aimed to assess the anticancer activity of a newly synthesized ciprofloxacin Mannich base (CMB) on ovarian cancer (OVCAR-3) and lung cancer (A-549) cell lines and to investigate probable involved molecular mechanisms. The cytotoxic and pro-apoptotic impact of CMB on both cell lines was investigated using MTT assay, Annexin V assay, and cell cycle analysis, as well as caspase-3 activation. Western blotting was carried out to evaluate downstream targets of the MAPK pathway, while qRT PCR was used to evaluate the gene expression pattern of the p53/Bax/Bcl2 pathway. CMB treatment showed significantly reduced cell proliferation in both OVCAR-3 and A-549 cells with half maximum inhibitory concentration (IC50) = 11.60 and 16.22 µg/mL, respectively. CMB also induced apoptosis, S phase cell cycle arrest, and up-regulated expression of p53, p21, and Bax while down-regulated Bcl2 expression. CMB also halted cell proliferation by deactivating the MAPK pathway. In conclusion, CMB may be regarded as a potential antiproliferative agent for lung and ovarian cancers due to anti-proliferative and pro-apoptotic actions via inhibition of the MAPK pathway and p53/Bax/Bcl2.
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Wang X, Lv S, Sun J, Zhang M, Zhang L, Sun Y, Zhao Z, Wang D, Zhao X, Zhang J. Caffeine reduces oxidative stress to protect against hyperoxia-induced lung injury via the adenosine A2A receptor/cAMP/PKA/Src/ERK1/2/p38MAPK pathway. Redox Rep 2022; 27:270-278. [DOI: 10.1080/13510002.2022.2143114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Xijuan Wang
- Department of Paediatrics, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Henan University People’s Hospital, Zhengzhou, People’s Republic of China
| | - Shuai Lv
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Jianwei Sun
- Department of Paediatrics, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Henan University People’s Hospital, Zhengzhou, People’s Republic of China
| | - Meihui Zhang
- Department of Paediatrics, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Henan University People’s Hospital, Zhengzhou, People’s Republic of China
| | - Lei Zhang
- Department of Paediatrics, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Henan University People’s Hospital, Zhengzhou, People’s Republic of China
| | - Yan Sun
- Department of Paediatrics, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Henan University People’s Hospital, Zhengzhou, People’s Republic of China
| | - Ziyan Zhao
- Department of Paediatrics, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Henan University People’s Hospital, Zhengzhou, People’s Republic of China
| | - Dandan Wang
- Department of Paediatrics, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Henan University People’s Hospital, Zhengzhou, People’s Republic of China
| | - Xinjing Zhao
- Department of Paediatrics, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Henan University People’s Hospital, Zhengzhou, People’s Republic of China
| | - Jiajie Zhang
- Department of Paediatrics, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Henan University People’s Hospital, Zhengzhou, People’s Republic of China
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Wang JP, Wei CC, Peng YD, Wang HY, Hung CH, Hong YH, Liou YF, Hou CW. Dose caffeinated energy drink is a consideration issue for endurance performance. Front Physiol 2022; 13:999811. [PMID: 36388121 PMCID: PMC9650112 DOI: 10.3389/fphys.2022.999811] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 10/17/2022] [Indexed: 11/23/2022] Open
Abstract
Caffeinated energy drinks are commonly taken to improve exercise performance, but there are few studies on the influence of different doses on an athlete’s performance. We conducted a double-blind, randomized, counter-balanced, and crossover research study to examine the effects of low caffeinated energy drink (Low ED) or high caffeinated energy drink (High ED) supplement on the performance, haematological response, and oxidative stress in triathletes. Twelve male participants underwent three testing sessions separated by weekly intervals, consisting of sprint triathlon training (0.75 km swim, 20 km cycle, and 5 km run). Before and during the trials, participants were randomly provided with either placebo (PLA) group, Low ED group, or High ED group. Exercise performance in the High ED group decreased significantly compared with the PLA and Low ED groups (p < 0.05). However, participants in the Low ED group also experienced an improved performance (p = 0.054). Analysis of variance revealed no differences among the three groups in cortisol and testosterone levels, or the Borg Rating of Perceived Exertion score (p > 0.5). Furthermore, superoxide dismutase (SOD) was reduced with exercise and were lowest in the High ED group. However, compared with PLA, a significant decrease of thiobarbituric acid reactive substances (TBARS) was observed in Low ED and High ED groups (p < 0.05). This indicates that caffeinated energy drink consumption may improve performance and reduce oxidative stress in sprint triathlon athletes. However, individual differences should be considered when supplementing with caffeinated energy drinks to decrease side effects.
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Affiliation(s)
- Jie-Ping Wang
- Laboratory of Exercise Biochemistry, Institute of Sports Sciences, University of Taipei, Taipei, Taiwan
| | - Chen-Chan Wei
- Department of Aquatic Sports, University of Taipei, Taipei, Taiwan
| | - Yun-Dong Peng
- School of Sport Medicine and Rehabilitation, Beijing Sport University, Beijing, China
| | - Hsuan-Yun Wang
- Department of Physical Education, Shih Hsin University, Taipei, Taiwan
| | - Chi-Hsiang Hung
- Department of Ball Sports, University of Taipei, Taipei, Taiwan
| | - Yin-Hui Hong
- Department of Psychology and Counseling, University of Taipei, Taipei, Taiwan
| | - Yuh-Feng Liou
- General Education Center, University of Taipei, Taipei, Taiwan
| | - Chien-Wen Hou
- Laboratory of Exercise Biochemistry, Institute of Sports Sciences, University of Taipei, Taipei, Taiwan
- *Correspondence: Chien-Wen Hou,
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7
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Yuan Y, Yang Y, Lei X, Dong W. Caffeine and bronchopulmonary dysplasia: Clinical benefits and the mechanisms involved. Pediatr Pulmonol 2022; 57:1392-1400. [PMID: 35318830 DOI: 10.1002/ppul.25898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 03/05/2022] [Accepted: 03/16/2022] [Indexed: 11/06/2022]
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic respiratory disease that occurs during the neonatal period and is commonly associated with prematurity. This condition results in a severe economic burden on society and the families involved. Caffeine is used not only for the treatment of apnea in prematurity, but also for the prevention of BPD. There are multiple clinical benefits of caffeine treatment, including improved extubation success, a reduced duration of mechanical ventilation, improved lung function, and a reduction of patent ductus arteriosus requiring treatment. These clinical benefits of caffeine for the treatment of BPD are supported by both clinical trials and evidence from animal models. However, the mechanism by which caffeine protects against BPD remains unclear. Here, we review the clinical value of caffeine in the prevention of BPD and its potential mechanisms of action, including anti-inflammatory, antioxidant, antifibrotic, and antiapoptotic properties, the regulation of angiogenesis, and diuretic effects. Our aim is to provide a new theoretical basis for the clinical treatment of BPD.
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Affiliation(s)
- Yuan Yuan
- Department of Pediatrics, Division of Neonatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Department of Perinatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Sichuan Clinical Research Center for Birth Defects, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Yang Yang
- Department of Pediatrics, Division of Neonatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Department of Perinatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Sichuan Clinical Research Center for Birth Defects, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiaoping Lei
- Department of Pediatrics, Division of Neonatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Department of Perinatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Sichuan Clinical Research Center for Birth Defects, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Wenbin Dong
- Department of Pediatrics, Division of Neonatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Department of Perinatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China.,Sichuan Clinical Research Center for Birth Defects, The Affiliated Hospital of Southwest Medical University, Luzhou, China
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8
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Effects of High Pressure-Assisted Extraction on Yield, Antioxidant, Antimicrobial, and Anti-diabetic Properties of Chlorogenic Acid and Caffeine Extracted from Green Coffee Beans. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-022-02828-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Singh S, Sahu K, Singh C, Singh A. Lipopolysaccharide induced altered signaling pathways in various neurological disorders. Naunyn Schmiedebergs Arch Pharmacol 2022; 395:285-294. [PMID: 34989812 DOI: 10.1007/s00210-021-02198-9] [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: 07/10/2021] [Accepted: 12/22/2021] [Indexed: 02/06/2023]
Abstract
Neuroinflammation is defined as an inflammatory response within the brain or spinal cord, whereas the brain's innate immune system is triggered by various inflammatory challenges such as injury, infection, exposure to toxin (LPS) and ageing, which result in cognitive impairment and neurodegenerative diseases including Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS) and multiple sclerosis (MS). Lipopolysaccharide (LPS) is a main structural component of the outer membrane of gram-negative bacteria, widely used systematically to stimulate the immune system and to generate profound physiological and behavioural changes. It consists of three parts: lipid A, a core oligosaccharide and an O side chain. It is reported by several scientists that, besides the systemic alteration, LPS also induces neurodegeneration by promoting neuroinflammation upon binding with the stimulation of Toll-like receptor-4 (TLR4) receptors present on glial cells. The mammalian Toll-like receptor (TLR) family consists of 13 membranes and TLR was discovered as a crucial pattern recognition receptor (PPR) involved in the recognition of pathogen-associated molecular patterns (PAMPs). Future studies will show that damage/danger-associated molecular patterns (DAMPs) are recognised by the involvement of PPRs, generated by the host itself. The stimulation of TLR4 by lipopolysaccharide phosphorylates two signalling pathways, namely the MyD88-dependent pathway and the MyD88-independent pathway. This activation subsequently triggers the release of various pro-inflammatory cytokines that are necessary to activate innate immune responses, and then promotes neuroinflammation. In this review, we critically demonstrated the epidemiology of neuroinflammation, types of TLRs, the molecular mechanism of TLR4 and management of neuroinflammation.
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Affiliation(s)
- Sukhdev Singh
- Department of Pharmacology, ISF College of Pharmacy, Moga, 142001, Punjab, India.,Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab, 144603, India
| | - Kuleshwar Sahu
- Department of Pharmacology, ISF College of Pharmacy, Moga, 142001, Punjab, India.,Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab, 144603, India
| | - Charan Singh
- Department of Pharmaceutics, ISF College of Pharmacy, Moga, 142001, Punjab, India.,Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab, 144603, India
| | - Arti Singh
- Department of Pharmacology, ISF College of Pharmacy, Moga, 142001, Punjab, India. .,Affiliated to IK Gujral Punjab Technical University, Jalandhar, Punjab, 144603, India.
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10
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Yang M, Gao XR, Meng YN, Shen F, Chen YP. ETS1 Ameliorates Hyperoxia-Induced Alveolar Epithelial Cell Injury by Regulating the TGM2-Mediated Wnt/β-Catenin Pathway. Lung 2021; 199:681-690. [PMID: 34817668 DOI: 10.1007/s00408-021-00489-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 10/24/2021] [Indexed: 11/24/2022]
Abstract
PURPOSE Bronchopulmonary dysplasia (BPD) is a chronic lung disease that affects newborns who need oxygen therapy, and high-concentration oxygen therapy may cause neonatal morbidity and mortality in newborns. E26 oncogene homologue 1 (ETS1) and transglutaminase 2 (TGM2) have been reported to be associated with lung cell injury. However, the mechanism of ETS1 in regulating BPD is still unclear. METHODS Hyperoxia-induced A549 cells to simulate hyperoxia-induced alveolar epithelial cell injury. MTT assays and colony formation assays were performed to investigate the proliferation of A549 cells. Flow cytometry was carried out to quantify the apoptosis of A549 cells. The expression levels of ETS1 and TGM2 were quantified by qRT-PCR. The protein expression levels of ETS1, TGM2, β-catenin, c-Jun and MET were measured by western blot. Overexpression of ETS1, overexpression of TGM2, overexpression of ETS1 with downregulation of TGM2 and overexpression of TGM2 with inhibition of Wnt/β-catenin pathway were performed to investigate the role of ETS1, TGM2 and Wnt/β-catenin pathways in hyperoxia-induced alveolar epithelial cell injury. RESULTS Hyperoxia decreased the proliferation and promoted the apoptosis of cells in a time-dependent manner. Moreover, overexpression of ETS1 rescued the effect of hyperoxia on proliferation and apoptosis. In addition, overexpression of TGM2 participated in the regulation of hyperoxia-induced proliferation and apoptosis. ETS1 regulated hyperoxia-induced alveolar epithelial cell injury through the Wnt/β-catenin pathway via TGM2. CONCLUSION ETS1 ameliorates hyperoxia-induced alveolar epithelial cell injury through the TGM2-mediated Wnt/β-catenin pathway.
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Affiliation(s)
- Min Yang
- Department of Respiratory, Hunan Children's Hospital, No. 86 Ziyuan Road, Changsha, 410007, Hunan Province, China
| | - Xi-Rong Gao
- Neonate Department, Hunan Children's Hospital, Changsha, 410007, Hunan Province, China
| | - Yan-Ni Meng
- Department of Respiratory, Hunan Children's Hospital, No. 86 Ziyuan Road, Changsha, 410007, Hunan Province, China
| | - Fang Shen
- Research Institute of Children, Hunan Children's Hospital, Changsha, 410007, Hunan Province, China
| | - Yan-Ping Chen
- Department of Respiratory, Hunan Children's Hospital, No. 86 Ziyuan Road, Changsha, 410007, Hunan Province, China.
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11
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Tonkaboni A, Lotfibakhshaiesh N, Danesh P, Tajerian R, Ziaei H. Evaluation of Inhibitory Effects of Caffeine on Human Carcinoma Cells. Nutr Cancer 2020; 73:1998-2002. [PMID: 32996789 DOI: 10.1080/01635581.2020.1819344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
One of the world's most consumed medications is caffeine which is available in the vast majority of beverages. Previously, some effects of caffeine have been evaluated including its inhibitory effect on cancer cells. But, the influence of caffeine on esophagus carcinoma squamous cells (CSC) and head and neck carcinoma cells still has not well understood. Herein, the relation between different amounts of caffeine with the proliferation rate of human esophagus carcinoma squamous cell line KYSE-30 as well as human head and neck carcinoma cell line HN5 was evaluated. Furthermore, concentrations of caffeine were adjusted and their effect on cells were studied. The inhibitory effects of caffeine on cells were measured using the conventional colorimetric MTT assay after 3 and 7 day of incubation. Our findings are suggested that caffeine has a significant inhibitory effect on both cell lines at the concentrations of 20, 50, and 70 milli-mol (mmol). The result shows that caffeine can prevent the proliferation of carcinoma cells and it is a perfect candidate for therapeutic applications.
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Affiliation(s)
- Arghavan Tonkaboni
- Department of Oral and Maxillofacial Medicine, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Nasrin Lotfibakhshaiesh
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Pariya Danesh
- School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Roksana Tajerian
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Iran
| | - Heliya Ziaei
- School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
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12
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Korekar G, Kumar A, Ugale C. Occurrence, fate, persistence and remediation of caffeine: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:34715-34733. [PMID: 31811612 DOI: 10.1007/s11356-019-06998-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Pharmaceutical and personal care products (PPCPs) have gained attention in recent years due to their continuous discharge in natural waters. Their persistence in the environment has impacted flora, fauna and human being worldwide. One of the most common PPCPs is caffeine (1, 3, 7-trimethylxanthine) which acts as a stimulant to the central nervous system in humans and is found in nature in about 60 plant species, especially in coffee, tea and cacao plants. Here we discuss the evidence with respect to caffeine occurrence, its persistence and remediation in light of increasing knowledge and the impact of caffeine on the environment. Daily intake of caffeine around the world is found to increase due to the frequent introduction of new caffeinated beverages as well as increased consumption of coffee, tea and carbonated soft drinks, which has led to increase in its concentration in water bodies including agricultural soil. The caffeine concentration in different water system, studied by various authors is also described. Diverse effects of the use of caffeine on several organisms including humans are also briefly presented. Therefore, urgent attention for the removal of caffeine and its derivatives is the need of the hour. Various methods described in literature for caffeine degradation/removal is also presented. Another widely used technique in environmental remediation is molecular imprinting (MIP); however, only few MIPs have been demonstrated for caffeine which is also discussed. Regular monitoring can be useful to control toxic effects of caffeine. Graphical abstract.
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Affiliation(s)
- Girish Korekar
- Department of Chemistry, Visvesvaraya National Institute of Technology (VNIT), Nagpur, Maharashtra, 440010, India
| | - Anupama Kumar
- Department of Chemistry, Visvesvaraya National Institute of Technology (VNIT), Nagpur, Maharashtra, 440010, India.
| | - Chetna Ugale
- Department of Botany, Indira Mahavidyalaya Kalamb, Dist. Yavatmal, Maharashtra, 445401, India
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13
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Nilnumkhum A, Kanlaya R, Yoodee S, Thongboonkerd V. Caffeine inhibits hypoxia-induced renal fibroblast activation by antioxidant mechanism. Cell Adh Migr 2020; 13:260-272. [PMID: 31271106 PMCID: PMC6650197 DOI: 10.1080/19336918.2019.1638691] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Caffeine has been demonstrated to possess anti-fibrotic activity against liver fibrosis. However, its role in renal fibrosis remained unclear. This study investigated the effects of caffeine on renal fibroblast activation induced by hypoxia (one of the inducers for renal fibrosis). BHK-21 fibroblasts were cultured under normoxia or hypoxia with or without caffeine treatment. Hypoxia increased levels of fibronectin, α-smooth muscle actin, actin stress fibers, intracellular reactive oxygen species (ROS), and oxidized proteins. However, caffeine successfully preserved all these activated fibroblast markers to their basal levels. Cellular catalase activity was dropped under hypoxic condition but could be reactivated by caffeine. Hif1a gene and stress-responsive Nrf2 signaling molecule were elevated/activated by hypoxia, but only Nrf2 could be partially recovered by caffeine. These data suggest that caffeine exhibits anti-fibrotic effect against hypoxia-induced renal fibroblast activation through its antioxidant property to eliminate intracellular ROS, at least in part, via downstream catalase and Nrf2 mechanisms.
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Affiliation(s)
- Angkhana Nilnumkhum
- a Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital , Mahidol University , Bangkok , Thailand
| | - Rattiyaporn Kanlaya
- a Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital , Mahidol University , Bangkok , Thailand
| | - Sunisa Yoodee
- a Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital , Mahidol University , Bangkok , Thailand
| | - Visith Thongboonkerd
- a Medical Proteomics Unit, Office for Research and Development, Faculty of Medicine Siriraj Hospital , Mahidol University , Bangkok , Thailand
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14
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Ko J, Kim JY, Kim JW, Yoon JS. Anti-oxidative and anti-adipogenic effects of caffeine in an in vitro model of Graves' orbitopathy. Endocr J 2020; 67:439-447. [PMID: 31941844 DOI: 10.1507/endocrj.ej19-0521] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Oxidative stress and adipogenesis play key roles in the pathogenesis of Graves' orbitopathy (GO). In this study, the therapeutic effects of caffeine on the reduction of oxidative stress and adipogenesis were evaluated in primary cultured GO orbital fibroblasts in vitro. Orbital fibroblasts were cultured from orbital connective tissues obtained from individuals with GO. Intracellular reactive oxygen species (ROS) levels induced by hydrogen peroxide or cigarette smoke extract and the expression of anti-oxidative enzymes were measured after caffeine treatment. After adipogenic differentiation and caffeine treatment, cells were stained with Oil Red O and the levels of peroxisome proliferator activator γ (PPARγ), C/EBPα, and C/EBPβ were determined by western blot analysis. Hydrogen peroxide and cigarette smoke extract increased the levels of intracellular ROS and anti-oxidative enzymes, which decreased in a dose-dependent manner upon pretreatment with caffeine in GO orbital fibroblasts. Oil Red-O staining results revealed a decrease in lipid droplets; furthermore, PPARγ, C/EBPα, and C/EBPβ protein expression levels were inhibited upon treatment with caffeine during adipocyte differentiation. In conclusion, caffeine decreased oxidative stress and adipogenesis in GO orbital fibroblasts in vitro. These findings may contribute to the development of new types of caffeine-containing pharmacological agents for use in the management of GO.
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Affiliation(s)
- JaeSang Ko
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
| | - Ji-Young Kim
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
| | - Jae-Woo Kim
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, Seoul, Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Korea
| | - Jin Sook Yoon
- Department of Ophthalmology, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
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15
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Omaiye EE, McWhirter KJ, Luo W, Pankow JF, Talbot P. High-Nicotine Electronic Cigarette Products: Toxicity of JUUL Fluids and Aerosols Correlates Strongly with Nicotine and Some Flavor Chemical Concentrations. Chem Res Toxicol 2019. [PMID: 30896936 DOI: 10.1101/490607] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Whereas JUUL electronic cigarettes (ECs) have captured the majority of the EC market, with a large fraction of their sales going to adolescents, little is known about their cytotoxicity and potential effects on health. The purpose of this study was to determine flavor chemical and nicotine concentrations in the eight currently marketed prefilled JUUL EC cartridges ("pods") and to evaluate the cytotoxicity of the different variants (e.g., "Cool Mint" and "Crème Brulee") using in vitro assays. Nicotine and flavor chemicals were analyzed using gas chromatography-mass spectrometry in pod fluid before and after vaping and in the corresponding aerosols. 59 flavor chemicals were identified in JUUL pod fluids, and 3 were >1 mg/mL. Duplicate pods were similar in flavor chemical composition and concentration. Nicotine concentrations (average 60.9 mg/mL) were significantly higher than those of any EC products we have previously analyzed. The transfer efficiency of individual flavor chemicals that were >1 mg/mL and nicotine from the pod fluid into aerosols was generally 35-80%. All pod fluids were cytotoxic at a 1:10 dilution (10%) in the MTT and neutral red uptake assays when tested with BEAS-2B lung epithelial cells. Most aerosols were cytotoxic in these assays at concentrations between 0.2 and 1.8%. The cytotoxicity of collected aerosol materials was highly correlated with nicotine and ethyl maltol concentrations and moderately to weakly correlated with total flavor chemical concentration and menthol concentration. Our study demonstrates that (1) some JUUL flavor pods have sufficiently high concentrations of flavor chemicals that may make them attractive to youth and (2) the concentrations of nicotine and some flavor chemicals (e.g., ethyl maltol) are high enough to be cytotoxic in acute in vitro assays, emphasizing the need to determine if JUUL products will lead to adverse health effects with chronic use.
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Affiliation(s)
- Esther E Omaiye
- Environmental Toxicology Graduate Program , University of California, Riverside , Riverside , California 92521 , United States
- Department of Molecular, Cell and Systems Biology , University of California, Riverside , Riverside , California 92521 , United States
| | - Kevin J McWhirter
- Department of Civil and Environmental Engineering , Portland State University , Portland , Oregon 97207 , United States
| | - Wentai Luo
- Department of Civil and Environmental Engineering , Portland State University , Portland , Oregon 97207 , United States
- Department of Chemistry , Portland State University , Portland , Oregon 97207 , United States
| | - James F Pankow
- Department of Civil and Environmental Engineering , Portland State University , Portland , Oregon 97207 , United States
- Department of Chemistry , Portland State University , Portland , Oregon 97207 , United States
| | - Prue Talbot
- Department of Molecular, Cell and Systems Biology , University of California, Riverside , Riverside , California 92521 , United States
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Omaiye EE, McWhirter KJ, Luo W, Pankow JF, Talbot P. High-Nicotine Electronic Cigarette Products: Toxicity of JUUL Fluids and Aerosols Correlates Strongly with Nicotine and Some Flavor Chemical Concentrations. Chem Res Toxicol 2019. [PMID: 30896936 DOI: 10.1101/490607v1.full] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
Abstract
Whereas JUUL electronic cigarettes (ECs) have captured the majority of the EC market, with a large fraction of their sales going to adolescents, little is known about their cytotoxicity and potential effects on health. The purpose of this study was to determine flavor chemical and nicotine concentrations in the eight currently marketed prefilled JUUL EC cartridges ("pods") and to evaluate the cytotoxicity of the different variants (e.g., "Cool Mint" and "Crème Brulee") using in vitro assays. Nicotine and flavor chemicals were analyzed using gas chromatography-mass spectrometry in pod fluid before and after vaping and in the corresponding aerosols. 59 flavor chemicals were identified in JUUL pod fluids, and 3 were >1 mg/mL. Duplicate pods were similar in flavor chemical composition and concentration. Nicotine concentrations (average 60.9 mg/mL) were significantly higher than those of any EC products we have previously analyzed. The transfer efficiency of individual flavor chemicals that were >1 mg/mL and nicotine from the pod fluid into aerosols was generally 35-80%. All pod fluids were cytotoxic at a 1:10 dilution (10%) in the MTT and neutral red uptake assays when tested with BEAS-2B lung epithelial cells. Most aerosols were cytotoxic in these assays at concentrations between 0.2 and 1.8%. The cytotoxicity of collected aerosol materials was highly correlated with nicotine and ethyl maltol concentrations and moderately to weakly correlated with total flavor chemical concentration and menthol concentration. Our study demonstrates that (1) some JUUL flavor pods have sufficiently high concentrations of flavor chemicals that may make them attractive to youth and (2) the concentrations of nicotine and some flavor chemicals (e.g., ethyl maltol) are high enough to be cytotoxic in acute in vitro assays, emphasizing the need to determine if JUUL products will lead to adverse health effects with chronic use.
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Affiliation(s)
- Esther E Omaiye
- Environmental Toxicology Graduate Program , University of California, Riverside , Riverside , California 92521 , United States
- Department of Molecular, Cell and Systems Biology , University of California, Riverside , Riverside , California 92521 , United States
| | - Kevin J McWhirter
- Department of Civil and Environmental Engineering , Portland State University , Portland , Oregon 97207 , United States
| | - Wentai Luo
- Department of Civil and Environmental Engineering , Portland State University , Portland , Oregon 97207 , United States
- Department of Chemistry , Portland State University , Portland , Oregon 97207 , United States
| | - James F Pankow
- Department of Civil and Environmental Engineering , Portland State University , Portland , Oregon 97207 , United States
- Department of Chemistry , Portland State University , Portland , Oregon 97207 , United States
| | - Prue Talbot
- Department of Molecular, Cell and Systems Biology , University of California, Riverside , Riverside , California 92521 , United States
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Endesfelder S, Strauß E, Scheuer T, Schmitz T, Bührer C. Antioxidative effects of caffeine in a hyperoxia-based rat model of bronchopulmonary dysplasia. Respir Res 2019; 20:88. [PMID: 31077204 PMCID: PMC6511176 DOI: 10.1186/s12931-019-1063-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 04/30/2019] [Indexed: 02/07/2023] Open
Abstract
Background While additional oxygen supply is often required for the survival of very premature infants in intensive care, this also brings an increasing risk of progressive lung diseases and poor long-term lung outcomes. Caffeine is administered to neonates in neonatal intensive care for the prevention and treatment of apneas and has been shown to reduce BPD incidence and the need for mechanical ventilation, although it is still unclear whether this is due to a direct pulmonary action via antagonism of adenosine receptors and/or an indirect action. This experimental study aims to investigate the action of caffeine on the oxidative stress response in pulmonary tissue in a hyperoxia-based model of bronchopulmonary dysplasia in newborn rats. Methods Newborn Wistar rats were exposed to 21% or 80% oxygen for 3 (P3) or 5 (P5) postnatal days with or without recovery on room air until postnatal day 15 (P15) and treated with vehicle or caffeine (10 mg/kg) every 48 h beginning on the day of birth. The lung tissue of the rat pups was examined for oxidative stress response at P3 and P5 immediately after oxygen exposure or after recovery in ambient air (P15) by immunohistological staining and analysis of lung homogenates by ELISA and qPCR. Results Lungs of newborn rats, corresponding to the saccular stage of lung development and to the human lung developmental stage of preterms, showed increased rates of total glutathione and hydrogen peroxide, oxidative damage to DNA and lipids, and induction of second-phase mediators of antioxidative stress response (superoxide dismutase, heme oxygenase-1, and the Nrf2/Keap1 system) in response to hyperoxia. Caffeine reduced oxidative DNA damage and had a protective interference with the oxidative stress response. Conclusion In addition to the pharmacological antagonism of adenosine receptors, caffeine appears to be a potent antioxidant and modulates the hyperoxia-induced pulmonary oxidative stress response and thus protective properties in the BPD-associated animal model. Free-radical-induced damage caused by oxidative stress seems to be a biological mechanism progress of newborn diseases. New aspects of antioxidative therapeutic strategies to passivate oxidative stress-related injury should be in focus of further investigations. Electronic supplementary material The online version of this article (10.1186/s12931-019-1063-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Stefanie Endesfelder
- Department of Neonatology, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.
| | - Evelyn Strauß
- Department of Neonatology, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Till Scheuer
- Department of Neonatology, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Thomas Schmitz
- Department of Neonatology, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Christoph Bührer
- Department of Neonatology, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
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Abstract
Ochratoxin A (OTA) is a widespread bioactive extrolite from secondary metabolism of fungi which presence in foods like coffee is of public health concern, particularly for heavy drinkers. Coffee is one of the most consumed and appreciated non-alcoholic beverage in the world. Its production from the plantation to the coffee cup involves several steps that would determine the final concentration of OTA in the beverage. This review gives an overview of OTA contamination in roasted coffee beans in different countries and mitigation strategies for OTA reduction.
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Genotoxic effect of caffeine in Yarrowia lipolytica cells deficient in DNA repair mechanisms. Arch Microbiol 2019; 201:991-998. [PMID: 31025056 DOI: 10.1007/s00203-019-01658-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 04/05/2019] [Accepted: 04/10/2019] [Indexed: 01/01/2023]
Abstract
Caffeine is a compound that can exert physiological-beneficial effects in the organism. Nevertheless, there are controversies about its protective-antioxidant and/or its negative genotoxic effect. To abound on the analysis of the possible genotoxic/antioxidant effect of caffeine, we used as research model the yeast Yarrowia lipolytica parental strain, and mutant strains (∆rad52 and ∆ku80), which are deficient in the DNA repair mechanisms. Caffeine (5 mM) showed a cytostatic effect on all strains, but after 72 h of incubation the parental and ∆ku80 strains were able to recover of this inhibitory effect on growth, whereas ∆rad52 was unable to recover. When cells were pre-incubated with caffeine and H2O2 or incubated with a mixture of both agents, a higher inhibitory effect on growth of mutant strains was observed and this effect was noticeably greater for the Δrad52 strain. The toxic effect of caffeine appears to be through a mechanism of DNA damage (genotoxic effect) that involves DSB generation since, in all tested conditions, the growth of Δrad52 strain (cells deficient in HR DNA repair mechanism) was more severely affected.
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20
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Omaiye EE, McWhirter KJ, Luo W, Pankow JF, Talbot P. High-Nicotine Electronic Cigarette Products: Toxicity of JUUL Fluids and Aerosols Correlates Strongly with Nicotine and Some Flavor Chemical Concentrations. Chem Res Toxicol 2019; 32:1058-1069. [PMID: 30896936 DOI: 10.1021/acs.chemrestox.8b00381] [Citation(s) in RCA: 150] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Whereas JUUL electronic cigarettes (ECs) have captured the majority of the EC market, with a large fraction of their sales going to adolescents, little is known about their cytotoxicity and potential effects on health. The purpose of this study was to determine flavor chemical and nicotine concentrations in the eight currently marketed prefilled JUUL EC cartridges ("pods") and to evaluate the cytotoxicity of the different variants (e.g., "Cool Mint" and "Crème Brulee") using in vitro assays. Nicotine and flavor chemicals were analyzed using gas chromatography-mass spectrometry in pod fluid before and after vaping and in the corresponding aerosols. 59 flavor chemicals were identified in JUUL pod fluids, and 3 were >1 mg/mL. Duplicate pods were similar in flavor chemical composition and concentration. Nicotine concentrations (average 60.9 mg/mL) were significantly higher than those of any EC products we have previously analyzed. The transfer efficiency of individual flavor chemicals that were >1 mg/mL and nicotine from the pod fluid into aerosols was generally 35-80%. All pod fluids were cytotoxic at a 1:10 dilution (10%) in the MTT and neutral red uptake assays when tested with BEAS-2B lung epithelial cells. Most aerosols were cytotoxic in these assays at concentrations between 0.2 and 1.8%. The cytotoxicity of collected aerosol materials was highly correlated with nicotine and ethyl maltol concentrations and moderately to weakly correlated with total flavor chemical concentration and menthol concentration. Our study demonstrates that (1) some JUUL flavor pods have sufficiently high concentrations of flavor chemicals that may make them attractive to youth and (2) the concentrations of nicotine and some flavor chemicals (e.g., ethyl maltol) are high enough to be cytotoxic in acute in vitro assays, emphasizing the need to determine if JUUL products will lead to adverse health effects with chronic use.
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Affiliation(s)
- Esther E Omaiye
- Environmental Toxicology Graduate Program , University of California, Riverside , Riverside , California 92521 , United States.,Department of Molecular, Cell and Systems Biology , University of California, Riverside , Riverside , California 92521 , United States
| | - Kevin J McWhirter
- Department of Civil and Environmental Engineering , Portland State University , Portland , Oregon 97207 , United States
| | - Wentai Luo
- Department of Civil and Environmental Engineering , Portland State University , Portland , Oregon 97207 , United States.,Department of Chemistry , Portland State University , Portland , Oregon 97207 , United States
| | - James F Pankow
- Department of Civil and Environmental Engineering , Portland State University , Portland , Oregon 97207 , United States.,Department of Chemistry , Portland State University , Portland , Oregon 97207 , United States
| | - Prue Talbot
- Department of Molecular, Cell and Systems Biology , University of California, Riverside , Riverside , California 92521 , United States
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Is Impregnation of Xenograft with Caffeine Effective on Bone Healing Rate in Mandibular Defects? A Pilot Histological Animal Study. J Maxillofac Oral Surg 2019; 19:85-92. [PMID: 31988569 DOI: 10.1007/s12663-019-01221-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 03/23/2019] [Indexed: 10/27/2022] Open
Abstract
Introduction and Aim The aim of this study was to evaluate the effect of two concentrations of caffeine (1.5% and 3%) powder added to Bio-Oss xenograft on bone healing rate of iatrogenic mandibular defects in dogs. Materials and Method The researchers implemented a pilot study on ten male adult mongrel dogs. Two 4-mm circular critical-sized defects were trephined on each side of the mandibular body (a total of 4 defects for each dog). One of the defects remained empty as a control group. The other three defects in each case were randomly filled with 1.5% or 3% caffeinated Bio-Oss or pure Bio-Oss. The mandible specimens were sent for histological and histomorphometric assessments, 4 months postoperatively. Our predictor variable was the type of bone substitute. The study outcomes were new bone formation, angiogenesis, and fibrosis. The p value was set at 0.05 using SPSS 16. Results The histological assessment showed that the administration of 1.5% caffeinated Bio-Oss to mandibular defects caused more angiogenesis and more new bone formation as well as less fibrosis compared to the other groups (p < 0.05). Conclusion This study suggested that the application of 1.5% caffeinated Bio-Oss in bone defects of dogs resulted in the higher new bone formation. However, further clinical trials are needed to support its relevancy.
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Moringa peregrina Leaves Extracts Induce Apoptosis and Cell Cycle Arrest of Hepatocellular Carcinoma. BIOMED RESEARCH INTERNATIONAL 2019; 2019:2698570. [PMID: 30713850 PMCID: PMC6332967 DOI: 10.1155/2019/2698570] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/06/2018] [Accepted: 12/17/2018] [Indexed: 11/18/2022]
Abstract
Moringa grows in the tropical and subtropical regions of the world. The genus Moringa belongs to family Moringaceae. It is found to possess various medicinal uses including hypoglycemic, analgesic, anti-inflammatory, hypolipidemic, and antioxidant activities. In this study, we investigated the antimicrobial and the anticancer activity of the Moringa peregrina as well as Moringa oleifera leaves extracts grown locally in Egypt. Results indicated that most of the extracts were found to possess high antimicrobial activity against gram-positive bacteria, gram-negative bacteria, and fungus. The survival rate of cancer cells was decreased in both hepatocellular carcinoma (HepG2) and breast carcinoma (MCF-7) cell lines when treated with Moringa leaves extracts. In addition, the cell cycle progression, apoptosis, and cancer-related genes confirmed its anticancer effect. The toxicity of each extract was also tested using the normal melanocytes cell line HFB4. The toxicity was low in both Moringa peregrina and Moringa oleifera leaves extracts. Furthermore, GC/MS analysis fractionized the phytochemicals content for each potential extract. In conclusion, results suggested that the Moringa peregrina and Moringa oleifera leaves extracts possess antimicrobial and anticancer properties which could be attributed to the bioactive phytochemical compounds present inside the extracts from this plant. These findings can be used to develop new drugs, especially for liver cancer chemotherapy.
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El-Deen AESN, Mansour AEM, Taha A, Fahmy EM. Effect of Green Coffee on Cisplatin Induced Renal Apoptosis in Adult Male Albino Rats. FOOD AND NUTRITION SCIENCES 2019; 10:358-368. [DOI: 10.4236/fns.2019.104028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Li YF, Ouyang SH, Tu LF, Wang X, Yuan WL, Wang GE, Wu YP, Duan WJ, Yu HM, Fang ZZ, Kurihara H, Zhang Y, He RR. Caffeine Protects Skin from Oxidative Stress-Induced Senescence through the Activation of Autophagy. Theranostics 2018; 8:5713-5730. [PMID: 30555576 PMCID: PMC6276298 DOI: 10.7150/thno.28778] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 10/04/2018] [Indexed: 12/28/2022] Open
Abstract
Skin cells are vulnerable to oxidative stress-induced senescence, which may lead to abnormal aging or aging-related disorders. Therefore, strategies that can ameliorate oxidative stress-induced senescence are expected to protect skin from damage, holding the promise of treating skin diseases in the clinic. This study aims to investigate whether caffeine, a well-known purine alkaloid, is able to prevent skin from oxidative stress-induced senescence, and to explore the underlying molecular mechanisms. Methods: A free radical inducer 2,2'-Azobis (2-amidinopropane) dihydrochloride (AAPH) was used to induce oxidative stress and cellular senescence in both transformed skin cells and in normal human epidermal keratinocytes (NHEKs). Ultraviolet (UV) irradiation was established as the in vivo oxidative stress model in mouse skin tissues. Cellular senescence was determined by SA β-galactosidase staining, immunofluorescence and western blotting. Activation of autophagy was confirmed by western blotting, immunofluorescence, and transmission electron microscopy. Reactive oxygen species (ROS) detection by commercial kits, gene knockdown by RNA interference (RNAi) and receptor activation/inactivation by agonist/antagonist treatment were applied in mechanistic experiments. Results: We report that AAPH induced senescence in both transformed skin cells and in NHEKs. Similarly, UV irradiation induced senescence in mouse skin tissues. Remarkably, low dose of caffeine (<10 μM) suppressed cellular senescence and skin damage induced by AAPH or UV. Mechanistically, caffeine facilitated the elimination of ROS by activating autophagy. Using a combination of RNAi and chemical treatment, we demonstrate that caffeine activates autophagy through a series of sequential events, starting from the inhibition of its primary cellular target adenosine A2a receptor (A2AR) to an increase in the protein level of Sirtuin 3 (SIRT3) and to the activation of 5' adenosine monophosphate-activated protein kinase (AMPK). Oral administration of caffeine increased the protein level of SIRT3, induced autophagy, and reduced senescence and tissue damage in UV-irradiated mouse skin. On the other hand, co-administration with autophagy inhibitors attenuated the protective effect of caffeine on UV-induced skin damage in mice. Conclusion: The results reveal that caffeine protects skin from oxidative stress-induced senescence through activating the A2AR/SIRT3/AMPK-mediated autophagy. Our study not only demonstrated the beneficial effect of caffeine using both in vitro and in vivo models, but also systematically investigated the underlying molecular mechanisms. These discoveries implicate the potential of caffeine in the protection of skin disease.
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Caffeine: an evidence-based success story in VLBW pharmacotherapy. Pediatr Res 2018; 84:333-340. [PMID: 29983414 DOI: 10.1038/s41390-018-0089-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 03/22/2018] [Accepted: 04/14/2018] [Indexed: 01/01/2023]
Abstract
Apnea of prematurity (AOP) is a common and pervasive problem in very low birth weight infants. Methylxanthines were reported >40 years ago to be an effective therapy and, by the early 2000s, caffeine had become the preferred methylxanthine because of its wide therapeutic index, excellent bioavailability, and longer half-life. A clinical trial to address unresolved questions and toxicity concerns, completed in 2004, confirmed significant benefits of caffeine therapy, including shorter duration of intubation and respiratory support, reduced incidence of chronic lung disease, decreased need for treatment of patent ductus arteriosus, reduced severity of retinopathy of prematurity, and improved motor and visual function. Cohort studies have now further delineated the benefits of initiation of therapy before 3 days postnatal age, and of higher maintenance doses to achieve incremental beneficial effects. This review summarizes the pivotal and in particular the most recent studies that have established the safety and efficacy of caffeine therapy for AOP and other respiratory and neurodevelopmental outcomes. Caffeine has a very favorable benefit-to-risk ratio, and has become one of the most prescribed and cost-effective pharmacotherapies in the NICU.
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26
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Liu Y, Dong WB. [Preventive effect of caffeine on bronchopulmonary dysplasia in preterm infants]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018; 20:598-602. [PMID: 30022766 PMCID: PMC7389204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 06/05/2018] [Indexed: 11/12/2023]
Abstract
With the increase in the rescue success rate of critically ill preterm infants and extremely preterm infants, the incidence rate of bronchopulmonary dysplasia (BPD) is increasing year by year. BPD has a high mortality rate and high possibility of sequelae, which greatly affects the quality of life of preterm infants and brings a heavy burden to their families, and so the treatment of BPD is of vital importance. At present, no consensus has been reached on the treatment measures for BPD. However, recent studies have shown that early application of caffeine can prevent BPD. With reference to the latest studies on the effect of caffeine in the prevention of BPD, this article reviews the mechanism of action of caffeine in reducing pulmonary inflammation, improving morphological abnormalities of lung injury, reducing oxidative stress injury, and improving pulmonary function.
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MESH Headings
- Animals
- Bronchopulmonary Dysplasia/genetics
- Bronchopulmonary Dysplasia/metabolism
- Bronchopulmonary Dysplasia/physiopathology
- Bronchopulmonary Dysplasia/prevention & control
- Caffeine/administration & dosage
- Humans
- Infant, Premature/growth & development
- Infant, Premature/metabolism
- Infant, Premature, Diseases/genetics
- Infant, Premature, Diseases/metabolism
- Infant, Premature, Diseases/physiopathology
- Infant, Premature, Diseases/prevention & control
- Oxidative Stress/drug effects
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Affiliation(s)
- Yang Liu
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China.
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27
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Liu Y, Dong WB. [Preventive effect of caffeine on bronchopulmonary dysplasia in preterm infants]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018; 20:598-602. [PMID: 30022766 PMCID: PMC7389204 DOI: 10.7499/j.issn.1008-8830.2018.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 06/05/2018] [Indexed: 06/08/2023]
Abstract
With the increase in the rescue success rate of critically ill preterm infants and extremely preterm infants, the incidence rate of bronchopulmonary dysplasia (BPD) is increasing year by year. BPD has a high mortality rate and high possibility of sequelae, which greatly affects the quality of life of preterm infants and brings a heavy burden to their families, and so the treatment of BPD is of vital importance. At present, no consensus has been reached on the treatment measures for BPD. However, recent studies have shown that early application of caffeine can prevent BPD. With reference to the latest studies on the effect of caffeine in the prevention of BPD, this article reviews the mechanism of action of caffeine in reducing pulmonary inflammation, improving morphological abnormalities of lung injury, reducing oxidative stress injury, and improving pulmonary function.
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MESH Headings
- Animals
- Bronchopulmonary Dysplasia/genetics
- Bronchopulmonary Dysplasia/metabolism
- Bronchopulmonary Dysplasia/physiopathology
- Bronchopulmonary Dysplasia/prevention & control
- Caffeine/administration & dosage
- Humans
- Infant, Premature/growth & development
- Infant, Premature/metabolism
- Infant, Premature, Diseases/genetics
- Infant, Premature, Diseases/metabolism
- Infant, Premature, Diseases/physiopathology
- Infant, Premature, Diseases/prevention & control
- Oxidative Stress/drug effects
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Affiliation(s)
- Yang Liu
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China.
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Rath P, Nardiello C, Morty RE. A new target for caffeine in the developing lung: endoplasmic reticulum stress? Am J Physiol Lung Cell Mol Physiol 2017; 313:L659-L663. [DOI: 10.1152/ajplung.00251.2017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/06/2017] [Accepted: 07/11/2017] [Indexed: 01/12/2023] Open
Affiliation(s)
- Philipp Rath
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and
| | - Claudio Nardiello
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
| | - Rory E. Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, member of the German Center for Lung Research, Giessen, Germany
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Surate Solaligue DE, Rodríguez-Castillo JA, Ahlbrecht K, Morty RE. Recent advances in our understanding of the mechanisms of late lung development and bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2017; 313:L1101-L1153. [PMID: 28971976 DOI: 10.1152/ajplung.00343.2017] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/21/2017] [Accepted: 09/23/2017] [Indexed: 02/08/2023] Open
Abstract
The objective of lung development is to generate an organ of gas exchange that provides both a thin gas diffusion barrier and a large gas diffusion surface area, which concomitantly generates a steep gas diffusion concentration gradient. As such, the lung is perfectly structured to undertake the function of gas exchange: a large number of small alveoli provide extensive surface area within the limited volume of the lung, and a delicate alveolo-capillary barrier brings circulating blood into close proximity to the inspired air. Efficient movement of inspired air and circulating blood through the conducting airways and conducting vessels, respectively, generates steep oxygen and carbon dioxide concentration gradients across the alveolo-capillary barrier, providing ideal conditions for effective diffusion of both gases during breathing. The development of the gas exchange apparatus of the lung occurs during the second phase of lung development-namely, late lung development-which includes the canalicular, saccular, and alveolar stages of lung development. It is during these stages of lung development that preterm-born infants are delivered, when the lung is not yet competent for effective gas exchange. These infants may develop bronchopulmonary dysplasia (BPD), a syndrome complicated by disturbances to the development of the alveoli and the pulmonary vasculature. It is the objective of this review to update the reader about recent developments that further our understanding of the mechanisms of lung alveolarization and vascularization and the pathogenesis of BPD and other neonatal lung diseases that feature lung hypoplasia.
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Affiliation(s)
- David E Surate Solaligue
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - José Alberto Rodríguez-Castillo
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Katrin Ahlbrecht
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and .,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
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Li H, Karmouty-Quintana H, Chen NY, Mills T, Molina J, Blackburn MR, Davies J. Loss of CD73-mediated extracellular adenosine production exacerbates inflammation and abnormal alveolar development in newborn mice exposed to prolonged hyperoxia. Pediatr Res 2017; 82:pr2017176. [PMID: 28832580 DOI: 10.1038/pr.2017.176] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 06/20/2017] [Indexed: 12/15/2022]
Abstract
BackgroundHyperoxic lung injury is characterized by cellular damage from high oxygen concentrations that lead to an inflammatory response and it disrupts normal alveolarization in the developing newborn lung. Adenosine is a signaling molecule that is generated extracellularly by ecto-5'-nucleotidase (CD73) in response to injury. Extracellular adenosine signals through cell surface receptors and has been found to have a protective role in acute injury situations; however, chronic elevations have been associated with detrimental changes in chronic lung diseases. We hypothesized that hyperoxia-induced lung injury leads to CD73-mediated increases in extracellular adenosine, which are detrimental to the newborn lung.MethodsC57Bl/6 and CD73-/- mice were exposed to 95% oxygen, 70% oxygen, or room air. Adenosine concentration and markers of pulmonary inflammation and lung development were measured.ResultsExposure to hyperoxia caused pulmonary inflammation and disrupted normal alveolar development in association with increased pulmonary adenosine levels. Loss of CD73-mediated extracellular adenosine production led to decreased survival with exposure to 95% oxygen, and exacerbated pulmonary inflammation and worsened lung development with 70% oxygen exposure.ConclusionExposure to hyperoxia causes lung injury associated with an increase in adenosine concentration, and loss of CD73-mediated adenosine production leads to worsening of hyperoxic lung injury.Pediatric Research advance online publication, 23 August 2017; doi:10.1038/pr.2017.176.
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Affiliation(s)
- Huiling Li
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas
| | - Harry Karmouty-Quintana
- Department of Biochemistry and Molecular Biology, The University of Texas-Houston Medical School, Houston, Texas
| | - Ning-Yuan Chen
- Department of Biochemistry and Molecular Biology, The University of Texas-Houston Medical School, Houston, Texas
| | - Tingting Mills
- Department of Biochemistry and Molecular Biology, The University of Texas-Houston Medical School, Houston, Texas
| | - Jose Molina
- Department of Biochemistry and Molecular Biology, The University of Texas-Houston Medical School, Houston, Texas
| | - Michael R Blackburn
- Department of Biochemistry and Molecular Biology, The University of Texas-Houston Medical School, Houston, Texas
| | - Jonathan Davies
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas
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Jiao YH, Dou M, Wang G, Li HY, Liu JS, Yang X, Yang WD. Exposure of okadaic acid alters the angiogenesis in developing chick embryos. Toxicon 2017; 133:74-81. [PMID: 28476539 DOI: 10.1016/j.toxicon.2017.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 04/25/2017] [Accepted: 05/01/2017] [Indexed: 02/07/2023]
Abstract
Okadaic acid (OA) is a common phycotoxin, which concerns diarrheic shellfish poisoning (DSP) in human being. It has been known that OA can induce disorganization in cytoskeletal architecture and cell-cell contact, cause chromosome loss, apoptosis, DNA damage and inhibit phosphatases, suggesting its potential embryotoxicity. In this paper, we found that low concentration of OA (50 nM, 100 nM and 200 nM) significantly reduced the density of vascular plexus in yolk-sac membrane (YSM) of chick embryo, while high concentration of OA (500 nM) distinctly depressed the blood vessel density in chorioallantoic membrane (CAM). After exposed to OA, MDA level and SOD activity increased significantly in CAM tissues. However, addition of vitamin C could rescue OA-suppressed angiogenesis in CAM of chick embryo. After exposure of OA, Ang-2 expression was down-regulated in CAM tissues. Taking together, we proposed that OA interfered with angiogenesis in developing chick embryo, through, at least partly, the induction of excessive ROS generation.
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Affiliation(s)
- Yu-Hu Jiao
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Min Dou
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Guang Wang
- Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University, Guangzhou, 510632, China
| | - Hong-Ye Li
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Jie-Sheng Liu
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Xuesong Yang
- Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University, Guangzhou, 510632, China.
| | - Wei-Dong Yang
- Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China.
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32
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Rath P, Nardiello C, Surate Solaligue DE, Agius R, Mižíková I, Hühn S, Mayer K, Vadász I, Herold S, Runkel F, Seeger W, Morty RE. Caffeine administration modulates TGF-β signaling but does not attenuate blunted alveolarization in a hyperoxia-based mouse model of bronchopulmonary dysplasia. Pediatr Res 2017; 81:795-805. [PMID: 28141790 DOI: 10.1038/pr.2017.21] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 11/27/2016] [Indexed: 02/03/2023]
Abstract
BACKGROUND Caffeine is widely used to manage apnea of prematurity, and reduces the incidence of bronchopulmonary dysplasia (BPD). Deregulated transforming growth factor (TGF)-β signaling underlies arrested postnatal lung maturation in BPD. It is unclear whether caffeine impacts TGF-β signaling or postnatal lung development in affected lungs. METHODS The impact of caffeine on TGF-β signaling in primary mouse lung fibroblasts and alveolar epithelial type II cells was assessed in vitro. The effects of caffeine administration (25 mg/kg/d for the first 14 d of postnatal life) on aberrant lung development and TGF-β signaling in vivo was assessed in a hyperoxia (85% O2)-based model of BPD in C57BL/6 mice. RESULTS Caffeine downregulated expression of type I and type III TGF-β receptors, and Smad2; and potentiated TGF-β signaling in vitro. In vivo, caffeine administration normalized body mass under hyperoxic conditions, and normalized Smad2 phosphorylation detected in lung homogenates; however, caffeine administration neither improved nor worsened lung structure in hyperoxia-exposed mice, in which postnatal lung maturation was blunted. CONCLUSION Caffeine modulated TGF-β signaling in vitro and in vivo. Caffeine administration was well-tolerated by newborn mice, but did not influence the course of blunted postnatal lung maturation in a hyperoxia-based experimental mouse model of BPD.
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Affiliation(s)
- Philipp Rath
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Institute of Bioprocess Engineering and Pharmaceutical Technology, Technische Hochschule Mittelhessen-University of Applied Sciences, Giessen, Germany
| | - Claudio Nardiello
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - David E Surate Solaligue
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Ronald Agius
- Department of Forensic and Clinical Toxicology, Labor Krone, Bad Salzuflen, Germany
| | - Ivana Mižíková
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Sebastian Hühn
- Institute of Bioprocess Engineering and Pharmaceutical Technology, Technische Hochschule Mittelhessen-University of Applied Sciences, Giessen, Germany
| | - Konstantin Mayer
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - István Vadász
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Susanne Herold
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Frank Runkel
- Institute of Bioprocess Engineering and Pharmaceutical Technology, Technische Hochschule Mittelhessen-University of Applied Sciences, Giessen, Germany.,Faculty of Biology and Chemistry, Justus Liebig University, Giessen, Germany
| | - Werner Seeger
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), member of the German Center for Lung Research (DZL), Giessen, Germany
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Yang X, Dong WB, Lei XP, Li QP, Zhang LY, Zhang LP. Resveratrol suppresses hyperoxia-induced nucleocytoplasmic shuttling of SIRT1 and ROS production in PBMC from preterm infants in vitro. J Matern Fetal Neonatal Med 2017; 31:1142-1150. [PMID: 28420272 DOI: 10.1080/14767058.2017.1311310] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xi Yang
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Wen-Bin Dong
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiao-Ping Lei
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Qing-Ping Li
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Lian-Yu Zhang
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Ling-Ping Zhang
- Department of Neonatology, the Affiliated Hospital of Southwest Medical University, Luzhou, China
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Endesfelder S, Weichelt U, Strauß E, Schlör A, Sifringer M, Scheuer T, Bührer C, Schmitz T. Neuroprotection by Caffeine in Hyperoxia-Induced Neonatal Brain Injury. Int J Mol Sci 2017; 18:E187. [PMID: 28106777 PMCID: PMC5297819 DOI: 10.3390/ijms18010187] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 01/04/2017] [Accepted: 01/12/2017] [Indexed: 12/11/2022] Open
Abstract
Sequelae of prematurity triggered by oxidative stress and free radical-mediated tissue damage have coined the term "oxygen radical disease of prematurity". Caffeine, a potent free radical scavenger and adenosine receptor antagonist, reduces rates of brain damage in preterm infants. In the present study, we investigated the effects of caffeine on oxidative stress markers, anti-oxidative response, inflammation, redox-sensitive transcription factors, apoptosis, and extracellular matrix following the induction of hyperoxia in neonatal rats. The brain of a rat pups at postnatal Day 6 (P6) corresponds to that of a human fetal brain at 28-32 weeks gestation and the neonatal rat is an ideal model in which to investigate effects of oxidative stress and neuroprotection of caffeine on the developing brain. Six-day-old Wistar rats were pre-treated with caffeine and exposed to 80% oxygen for 24 and 48 h. Caffeine reduced oxidative stress marker (heme oxygenase-1, lipid peroxidation, hydrogen peroxide, and glutamate-cysteine ligase catalytic subunit (GCLC)), promoted anti-oxidative response (superoxide dismutase, peroxiredoxin 1, and sulfiredoxin 1), down-regulated pro-inflammatory cytokines, modulated redox-sensitive transcription factor expression (Nrf2/Keap1, and NFκB), reduced pro-apoptotic effectors (poly (ADP-ribose) polymerase-1 (PARP-1), apoptosis inducing factor (AIF), and caspase-3), and diminished extracellular matrix degeneration (matrix metalloproteinases (MMP) 2, and inhibitor of metalloproteinase (TIMP) 1/2). Our study affirms that caffeine is a pleiotropic neuroprotective drug in the developing brain due to its anti-oxidant, anti-inflammatory, and anti-apoptotic properties.
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Affiliation(s)
- Stefanie Endesfelder
- Department of Neonatology, Charité, Universitätsmedizin Berlin, 13353 Berlin, Germany.
| | - Ulrike Weichelt
- Department of Physiology, Charité, Universitätsmedizin Berlin, 10117 Berlin, Germany.
| | - Evelyn Strauß
- Department of Neonatology, Charité, Universitätsmedizin Berlin, 13353 Berlin, Germany.
| | - Anja Schlör
- Department of Biochemistry and Biology, University of Potsdam, 14476 Potsdam, Germany.
| | - Marco Sifringer
- Department of Anesthesiology and Intensive Care Medicine, Charité, Universitätsmedizin Berlin, 13353 Berlin, Germany.
| | - Till Scheuer
- Department of Neonatology, Charité, Universitätsmedizin Berlin, 13353 Berlin, Germany.
| | - Christoph Bührer
- Department of Neonatology, Charité, Universitätsmedizin Berlin, 13353 Berlin, Germany.
| | - Thomas Schmitz
- Department of Neonatology, Charité, Universitätsmedizin Berlin, 13353 Berlin, Germany.
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Salicio VMM, Fett CA, Salicio MA, Brandäo CFCCM, Stoppiglia LF, Fett WCR, Botelho AC. THE EFFECT OF CAFFEINE SUPPLEMENTATION ON TRAINED INDIVIDUALS SUBJECTED TO MAXIMAL TREADMILL TEST. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES 2016; 14:16-23. [PMID: 28480382 PMCID: PMC5411867 DOI: 10.21010/ajtcam.v14i1.3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Background: Intense physical training increases oxidative stress and inflammation, resulting into muscle and cellular damage. The aim of this study was to analyze the effect of caffeine supplementation on trained young individuals subjected to two treadmill maximal tests. Materials and Methods: It was a double-blind and crossover study comprising 24 active individuals within the age group 18-30 years. The comparisons were conducted: the effect of exercise (week 1 x 2) and caffeine intake (GC x GP) on thiobarbituric acid (TBARS), interleukin 6 (IL-6), interleukin 10 (IL-10) and superoxide dismutase (SOD) variables during pre-exercise time (30 min. after caffeine or placebo intake) and post-exercise (5 min after treadmill test). Results: The comparison between weeks 1 and 2 showed increase in the first week, in the following items: TBARS, IL-6 and IL-10 in the GC and GP groups. The comparison within the same week showed that GC individuals presented lower post-exercise TBARS values in the first and second weeks; IL- 6 presented higher post-exercise values in the GC group in both weeks. The paired analysis comparing pre- and post-exercise, with and without caffeine showed that IL-6 presented higher post-exercise values in the GC group. Conclusion: Caffeine used by athletes can decrease oxidative stress. The increased IL-6 suggest that this ergogenic supplement may stimulate muscle hypertrophy, since IL-6 has myokine effect. However, the caffeine effect on IL-6 level and muscle hypertrophy increase should be better investigated in future studies.
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Affiliation(s)
- Viviane Martins Mana Salicio
- Physiotherapy Department of Várzea Grande University (UNIVAG). Education: Physiotherapy. Várzea Grande - MT, Brazil
| | - Carlos Alexandre Fett
- Laboratory of the Research Center for Physical Fitness, Computers, Metabolism, Sport and Health. Federal University of Mato Grosso (NAFIMES-UFMT). Education: Physical Education. Cuiaba - MT, Brazil
| | - Marcos Adriano Salicio
- Physiotherapy Department of Várzea Grande University (UNIVAG). Education: Physiotherapy. Várzea Grande - MT, Brazil
| | - Camila Fernanda Costa Cunha Moraes Brandäo
- Laboratory of the Research Center for Physical Fitness, Computers, Metabolism, Sport and Health. Federal University of Mato Grosso (NAFIMES-UFMT). Education: Physical Education. Cuiaba - MT, Brazil
| | - Luiz Fabrizio Stoppiglia
- Laboratory of the Research Center for Physical Fitness, Computers, Metabolism, Sport and Health. Federal University of Mato Grosso (NAFIMES-UFMT). Education: Nutrition. Cuiaba - MT, Brazil
| | - Waléria Christiane Rezende Fett
- Laboratory of the Research Center for Physical Fitness, Computers, Metabolism, Sport and Health. Federal University of Mato Grosso (NAFIMES-UFMT). Education: Physical Education. Cuiaba - MT, Brazil
| | - And Clovis Botelho
- Medical School, Federal University of Mato Grosso (UFMT). Education: Medicine. Cuiaba - MT, Brazil
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Muramatsu Y, Ito M, Oshima T, Kojima S, Ohno K. Hydrogen-rich water ameliorates bronchopulmonary dysplasia (BPD) in newborn rats. Pediatr Pulmonol 2016; 51:928-35. [PMID: 26845501 DOI: 10.1002/ppul.23386] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 12/25/2015] [Accepted: 01/08/2016] [Indexed: 11/06/2022]
Abstract
Bronchopulmonary dysplasia (BPD) is characterized by developmental arrest of the alveolar tissue. Oxidative stress is causally associated with development of BPD. The effects of hydrogen have been reported in a wide range of disease models and human diseases especially caused by oxidative stress. We made a rat model of BPD by injecting lipopolysaccharide (LPS) into the amniotic fluid at E16.5. The mother started drinking hydrogen-rich water from E9.5 and also while feeding milk. Hydrogen normalized LPS-induced abnormal enlargement of alveoli at P7 and P14. LPS increased staining for nitrotyrosine and 8-OHdG of the lungs, and hydrogen attenuated the staining. At P1, LPS treatment decreased expressions of genes for FGFR4, VEGFR2, and HO-1 in the lungs, and hydrogen increased expressions of these genes. In contrast, LPS treatment and hydrogen treatment had no essential effect on the expression of SOD1. Inflammatory marker proteins of TNFα and IL-6 were increased by LPS treatment, and hydrogen suppressed them. Treatment of A549 human lung adenocarcinoma epithelial cells with 10% hydrogen gas for 24 hr decreased production of reactive oxygen species in both LPS-treated and untreated cells. Lack of any known adverse effects of hydrogen makes hydrogen a promising therapeutic modality for BPD. Pediatr Pulmonol. 2016; 51:928-935. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Yukako Muramatsu
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mikako Ito
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takahiro Oshima
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Seiji Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kinji Ohno
- Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Dinu D, Chu C, Veith A, Lingappan K, Couroucli X, Jefcoate CR, Sheibani N, Moorthy B. Mechanistic role of cytochrome P450 (CYP)1B1 in oxygen-mediated toxicity in pulmonary cells: A novel target for prevention of hyperoxic lung injury. Biochem Biophys Res Commun 2016; 476:346-351. [PMID: 27235555 DOI: 10.1016/j.bbrc.2016.05.125] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 05/24/2016] [Indexed: 10/21/2022]
Abstract
Supplemental oxygen, which is routinely administered to preterm infants with pulmonary insufficiency, contributes to bronchopulmonary dysplasia (BPD) in these infants. Hyperoxia also contributes to the development of acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) in adults. The mechanisms of oxygen-mediated pulmonary toxicity are not completely understood. Recent studies have suggested an important role for cytochrome P450 (CYP)1A1/1A2 in the protection against hyperoxic lung injury. The role of CYP1B1 in oxygen-mediated pulmonary toxicity has not been studied. In this investigation, we tested the hypothesis that CYP1B1 plays a mechanistic role in oxygen toxicity in pulmonary cells in vitro. In human bronchial epithelial cell line BEAS-2B, hyperoxic treatment for 1-3 days led to decreased cell viability by about 50-80%. Hyperoxic cytotoxicity was accompanied by an increase in levels of reactive oxygen species (ROS) by up to 110%, and an increase of TUNEL-positive cells by up to 4.8-fold. Western blot analysis showed hyperoxia to significantly down-regulate CYP1B1 protein level. Also, there was a decrease of CYP1B1 mRNA by up to 38% and Cyp1b1 promoter activity by up to 65%. On the other hand, CYP1B1 siRNA appeared to rescue the cell viability under hyperoxia stress, and overexpression of CYP1B1 significantly attenuated hyperoxic cytotoxicity after 48 h of incubation. In immortalized lung endothelial cells derived from Cyp1b1-null and wild-type mice, hyperoxia increased caspase 3/7 activities in a time-dependent manner, but endothelial cells lacking the Cyp1b1 gene showed significantly decreased caspase 3/7 activities after 48 and 72 h of incubation, implying that CYP1B1 might promote apoptosis in wild type lung endothelial cells under hyperoxic stress. In conclusion, our results support the hypothesis that CYP1B1 plays a mechanistic role in pulmonary oxygen toxicity, and CYP1B1-mediated apoptosis could be one of the mechanisms of oxygen toxicity. Thus, CYP1B1 could be a novel target for preventative and/or therapeutic interventions against BPD in infants and ALI/ARDS in adults.
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Affiliation(s)
- Daniela Dinu
- Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Chun Chu
- Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Alex Veith
- Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Krithika Lingappan
- Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Xanthi Couroucli
- Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Colin R Jefcoate
- Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Nader Sheibani
- Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Bhagavatula Moorthy
- Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA.
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Hwang JH, Kim KJ, Ryu SJ, Lee BY. Caffeine prevents LPS-induced inflammatory responses in RAW264.7 cells and zebrafish. Chem Biol Interact 2016; 248:1-7. [DOI: 10.1016/j.cbi.2016.01.020] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 01/22/2016] [Accepted: 01/25/2016] [Indexed: 10/22/2022]
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39
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Chlorogenic acids, caffeine content and antioxidant properties of green coffee extracts: influence of green coffee bean preparation. Eur Food Res Technol 2016. [DOI: 10.1007/s00217-016-2643-y] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Silva DMG, Nardiello C, Pozarska A, Morty RE. Recent advances in the mechanisms of lung alveolarization and the pathogenesis of bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2015; 309:L1239-72. [PMID: 26361876 DOI: 10.1152/ajplung.00268.2015] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 09/09/2015] [Indexed: 02/08/2023] Open
Abstract
Alveolarization is the process by which the alveoli, the principal gas exchange units of the lung, are formed. Along with the maturation of the pulmonary vasculature, alveolarization is the objective of late lung development. The terminal airspaces that were formed during early lung development are divided by the process of secondary septation, progressively generating an increasing number of alveoli that are of smaller size, which substantially increases the surface area over which gas exchange can take place. Disturbances to alveolarization occur in bronchopulmonary dysplasia (BPD), which can be complicated by perturbations to the pulmonary vasculature that are associated with the development of pulmonary hypertension. Disturbances to lung development may also occur in persistent pulmonary hypertension of the newborn in term newborn infants, as well as in patients with congenital diaphragmatic hernia. These disturbances can lead to the formation of lungs with fewer and larger alveoli and a dysmorphic pulmonary vasculature. Consequently, affected lungs exhibit a reduced capacity for gas exchange, with important implications for morbidity and mortality in the immediate postnatal period and respiratory health consequences that may persist into adulthood. It is the objective of this Perspectives article to update the reader about recent developments in our understanding of the molecular mechanisms of alveolarization and the pathogenesis of BPD.
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Affiliation(s)
- Diogo M G Silva
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Claudio Nardiello
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Agnieszka Pozarska
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Rory E Morty
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
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Ma ZL, Wang G, Lu WH, Cheng X, Chuai M, Lee KKH, Yang X. Investigating the effect of excess caffeine exposure on placental angiogenesis using chicken 'functional' placental blood vessel network. J Appl Toxicol 2015; 36:285-95. [PMID: 26179615 DOI: 10.1002/jat.3181] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 04/09/2015] [Accepted: 04/23/2015] [Indexed: 01/07/2023]
Abstract
It is now known that over-consumption of caffeine by pregnant mothers could have detrimental effects on normal fetal development. However, it remains obscure how caffeine's harmful effect impacts directly or indirectly on the developing embryo/fetus through damaging placenta development. In this study, we demonstrated the morphological similarities between the yolk sac and chorioallantoic membranes (CAM) of chick embryos and the villi of the mammalian placenta. Using the chick yolk sac and the CAM as a model, we found that 5-15 µmol per egg of caffeine exposure inhibited angiogenesis. Under the same condition, cell proliferation in extraembryonic mesoderm was reduced while apoptosis was enhanced. Semi-quantitative RT-PCR analysis revealed that caffeine treatment down-regulated VEGF, VEGFR2, PIGF, IGF2 and NRP1 expression, but up-regulated Ang1 and Ang2 expression. We performed in situ hybridization to show VE-cadherin expression and as to demonstrate the blood vessels in the CAM and yolk sac membranes. This distribution of the VE-cadherin(+) blood vessels was determined to be reduced after caffeine treatment. Furthermore, MDA activity was induced after caffeine exposure, but GSH-PX activity was inhibited after caffeine exposure; SOD activity was unchanged as compared with the control. In summary, our results suggest that caffeine exposure could negatively impact on angiogenesis in the chick yolk sac and CAM by targeting angiogenesis-related genes. Some of these genes are also involved in regulating excess ROS generation. The results implied that the negative impact of caffeine on fetal development was partly attributed to impaired placental angiogenesis.
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Affiliation(s)
- Zheng-Lai Ma
- Department of Histology & Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Institute of Fetal-Preterm Labor Medicine, Medical College of Jinan University, Guangzhou, 510632, China
| | - Guang Wang
- Department of Histology & Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Institute of Fetal-Preterm Labor Medicine, Medical College of Jinan University, Guangzhou, 510632, China
| | - Wen-Hui Lu
- Department of Histology & Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Institute of Fetal-Preterm Labor Medicine, Medical College of Jinan University, Guangzhou, 510632, China
| | - Xin Cheng
- Department of Histology & Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Institute of Fetal-Preterm Labor Medicine, Medical College of Jinan University, Guangzhou, 510632, China
| | - Manli Chuai
- Division of Cell and Developmental Biology, University of Dundee, Dundee, DD1 5EH, UK
| | - Kenneth Ka Ho Lee
- Key Laboratory for Regenerative Medicine of the Ministry of Education, School of Biomedical Sciences, Chinese University of Hong Kong, Shatin, Hong Kong
| | - Xuesong Yang
- Department of Histology & Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Institute of Fetal-Preterm Labor Medicine, Medical College of Jinan University, Guangzhou, 510632, China
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Serum caffeine concentrations and short-term outcomes in premature infants of ⩽29 weeks of gestation. J Perinatol 2015; 35:434-8. [PMID: 25521559 DOI: 10.1038/jp.2014.226] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 10/27/2014] [Accepted: 11/18/2014] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Caffeine is effective in the treatment of apnea of prematurity but it is not well known if the therapeutic concentration of the drug has an impact on other neonatal outcomes such as chronic lung disease (CLD). The aim of this study was to determine if there is an association between caffeine concentrations and the incidence of CLD in premature infants of ⩽29 weeks of gestation. STUDY DESIGN A retrospective chart review of all the infants born ⩽29 weeks of gestation from 2007 to 2011, who survived until discharge or 36 weeks postmenstrual age, was conducted. Caffeine concentrations were obtained weekly on infants getting the drug. Average caffeine concentrations (ACCs) were determined for the duration of caffeine therapy and correlated with CLD, length of stay (LOS), oxygen at discharge (OD), duration of ventilation (DV) and total charges for hospitalization for each patient. RESULTS Of the 222 eligible infants, 198 met the inclusion criteria. ACC for infants without CLD was 17.0±3.8 μg ml(-1) compared with infants with CLD 14.3±6.1 μg ml(-1) (P<0.001). Infants receiving high ACC (>14.5 μg ml(-1)) had lower incidence of patent ductus arteriosus, lesser number of days on ventilator and oxygen, lesser need for diuretics, lower incidence of CLD, were more likely to go home without supplemental OD and had lower LOS and lower total hospital charges (all differences were significant P<0.05) Multiple logistic regression modeling after adjusting for confounding variables indicated that higher caffeine concentrations were significantly associated with decrease in CLD. Receiver operating curve analysis confirmed a significant predictive ability of caffeine concentration for CLD with a cutoff concentration of 14.5 μg ml(-1) (sensitivity of 42.6 and specificity of 86.8). The AUC (area under the curve) for the prediction of CLD was 0.632 (95% confidence interval 0.56-0.69, P=0.009). CONCLUSIONS Caffeine concentrations >14.5 μg ml(-1) were strongly correlated with reduced CLD in infants born at ⩽29 weeks of gestation. Higher caffeine concentrations were associated with decreased total hospital charges, DV, OD and LOS. Additional randomized trials are needed to confirm these findings, to identify ideal serum concentrations and determine possible long-term neurologic benefits.
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Dose-dependent effects of caffeine in human Sertoli cells metabolism and oxidative profile: Relevance for male fertility. Toxicology 2015; 328:12-20. [DOI: 10.1016/j.tox.2014.12.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/03/2014] [Accepted: 12/04/2014] [Indexed: 02/08/2023]
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Liang N, Kitts DD. Antioxidant property of coffee components: assessment of methods that define mechanisms of action. Molecules 2014; 19:19180-208. [PMID: 25415479 PMCID: PMC6270823 DOI: 10.3390/molecules191119180] [Citation(s) in RCA: 254] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 11/04/2014] [Accepted: 11/04/2014] [Indexed: 02/08/2023] Open
Abstract
Coffee is a rich source of dietary antioxidants, and this property, coupled with the fact that coffee is one of the world's most popular beverages, has led to the understanding that coffee is a major contributor to dietary antioxidant intake. Brewed coffee is a complex food matrix with numerous phytochemical components that have antioxidant activity capable of scavenging free radicals, donating hydrogen and electrons, providing reducing activity and also acting as metal ion pro-oxidant chelators. More recent studies have shown that coffee components can trigger tissue antioxidant gene expression and protect against gastrointestinal oxidative stress. This paper will describe different in vitro, cell-free and cell-based assays that both characterize and compare the antioxidant capacity and mechanism of action of coffee and its bioactive constituents. Moreover, evidence of cellular antioxidant activity and correlated specific genomic events induced by coffee components, which are relevant to antioxidant function in both animal and human studies, will be discussed.
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Affiliation(s)
- Ningjian Liang
- Food, Nutrition and Health, Faculty of Land and Food Systems, the University of British Columbia 2205 East Mall, Vancouver, BC V6T-1Z4, Canada.
| | - David D Kitts
- Food, Nutrition and Health, Faculty of Land and Food Systems, the University of British Columbia 2205 East Mall, Vancouver, BC V6T-1Z4, Canada.
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